Gas-fired water heater is not required to open the valve?

Usually at home, which is the peak of the house with hot water to keep the water heater power-on state, Gas Valves open state, as long as the barrier water heater, it will not start, and use it every time, you only need to open the hot water tap on the line, the water heater It starts automatically. No one at home, it is recommended to turn off the power to the water heater, there is no electricity, the water heater inside the Gas Control Valve is not open, there is no danger of leakage. Nobody at home for a long time, such as travel, long holiday, close the valve, turn off the power, do not unplug the plug, you can let go of the remaining water inside the water heater, specifically refer to the manual operation, there must be this, this is the case, the plug has You can unplug

Cold water heater valve how to use

Cold Water Heater Gas Valves is a combination of several valves: cold water inlet angle valve, the hot water outlet angle valve, as well as the user to adjust the water temperature with mixing valve (which can move both ends of the left is cold and right is hot water, opening angle that is doped with different amounts of cold water into a different, and to regulate the temperature effect).
In general, users only need to adjust the mixing waterGas Control Valve to adjust the water temperature; holding the normally open to other valves, usually without adjustment to rotate.

How to choose the water heater valve

How to choose the water heater valve
 1. Water Heater Gas Valves, the valve should be visually, the surface should be no trachoma; plated surface should be uniform gloss shall watch for peeling, cracking, burning, exposed bottom, peeling, dark spots and obvious defects such as pitting; spraying surface tissue should fine, smooth and uniform, without sagging, open at the end and other defects. The defect will directly affect the life of the valve.
2.Gas Valves pipe thread is connected with the pipeline, in the purchase of visual thread whether the surface dents, broken teeth and other obvious defects, with particular attention to the pipe thread and connector screwed effective length will affect the seal of reliable sex, pay attention to the effective length of pipe thread when purchasing. Generally cylindrical pipe thread DN15 effective length of about 10mm.
3. The valve, ball valve is generally on their body or handle marked with nominal pressure, can choose according to their needs when purchasing.
4. Replace the existing gate or ball, you want to find out the length of the structure, so can not be installed after purchase.
Pipe thread 5. Triangle valve has two internal thread and external thread, to choose according to needs; also note that there are some triangular zinc alloy valve on the market today, the valve is priced lower than the average product, but corrosive and cause breakage.

Gas Valve For Water Heater pipe thread

1. Optional visual Water Heater Gas Valves surface should be no trachoma; plated surface should be uniform gloss shall watch for peeling, cracking, burning, exposed bottom, peeling, dark spots and obvious defects such as pitting; spraying the surface should be fine organization , smooth and uniform, not a stream linked to defects such as exposed at the end. The defect will directly affect the life of the valve.
2.Gas Valve For Water Heater pipe thread is connected with the pipeline, in the purchase of visual thread whether the surface dents, broken teeth and other obvious defects, with particular attention to the pipe thread and connector screwed effective length will affect the seal of reliable sex, pay attention to the effective length of pipe thread when purchasing. Generally cylindrical pipe thread DN15 effective length of about 10mm.
3. The valve, ball valve is generally on their body or handle marked with nominal pressure, can choose according to their needs when purchasing.
4. Replace the existing gate or ball, you want to find out the length of the structure, so can not be installed after purchase.
Pipe thread 5. Triangle valve has two internal thread and external thread, to choose according to needs; also note that there are some triangular zinc alloy valve on the market today, the valve is priced lower than the average product, but corrosive and cause breakage.

Why gas water heater after use to close the gas valve

Because of the complex structure of the Water Heater Gas Valves, which is linked by water vapor or thermoelectric valve solenoid valve to close the pipeline, the reliability is low, more prone to leak after leak and deposited inside the water heater; In addition, due to the temperature and humidity toilet environment and poorly ventilated environment, rubber pipes prone to aging and cracking phenomenon, once the leak prone to explosion. Therefore, after use to close the gas valve.

Gas water heater valve to shut it after use

Regular use can not close, long-term use closed.
Note the use of natural gas valves:
1.A purchase and use good quality and safety performance of the stove and water heater, counterfeit products are a source of the accident;
2, have a qualified professional install gas facilities according to specifications, can not change on their own or within a line installed by households, on the outdoor gas pipeline must not gland weight;
3, according to the proper use of the product specification requirements, gas appliance should be regular maintenance (water heater for the August-October), there is a fault should be timely maintenance;
4. stove use someone must take care, pay attention to use ventilation environment, so that "two off one open," that shut the gas valve and the kitchen door, open kitchen window; be sure to turn off the valve always when no one at home switch.
5. house gas facilities should be inspected regularly, regular replacement of aging cracked hose ends to be fixed, to prevent accidental removal of the hose caused the accident. Currently, there is a life span of fifteen years of metal gas connection pipe is gradually replaces the previous hose.
6. To install and use gas leak alarm device alarm when leakage occurs in a timely manner to ensure the safety of home.

Gas water heater solenoid valve how bad the good times

1, Gas Water Heater Valve  damage, can cause can not supply, generally just can not start her.
2, in the case of determining the normal ignition, the solenoid valve split out (off the gas source), then Bankai micro-switches, it will spark ignition, this time at the hand pads tap solenoid valve, solenoid valve It will pull, because there is no combustion, probably about 10 seconds the solenoid valve core will pop up, if they can so it should be good for him.
3, if you can not pull, it may be old or ignition battery has a problem.
4, solenoid valve failure can be divided into the body, and an electromagnetic coil, spool gas valve failure is closed lax, open action is not in place or not, it can be opened manually to repair, and then there is the coil, and You can observe whether the appearance of burn state, whether smell paste flavor, touch is hot, with a table measuring coil values, the same as the original to see if the same comparison.
5, the easiest method is to determine, whether there is pull solenoid valve sound 'is "popping" sound, if no sound is bad.

Development of the control valve

From the Gas Control Valve applications, the development direction of the following:
Small actuator: reduce costs, improve flow capacity.
Sleeve guide: The guide sleeve, it is beneficial for the help to reduce friction, noise favor, favor the flow characteristics of interchange
Balanced Spool: To reduce actuator thrust or push the moment, a balanced valve plug is an important and dynamic performance also improved its system
Integrated plug and seat: In order to overcome the shortcomings of poor sealing valve seat, using the same material composition integrated plug and seat trim, the leakage rate and at the same time minimize the unbalanced force.
Simple passage: simple flow path, flow resistance is reduced, not only can decrease the pressure loss at both ends of the valve, but also reduce costs.
Seal and friction: friction sealing properties and performance are two aspects of the contradiction, the control valve is designed not only to solve sealing problems, friction and life and other performance indicators also must pay attention to therefore, research stuffing and packing structures are valued, rotary type Propane Control Valve to be more widely applied
Noise reduction: using a variety of ways to reduce noise control valve, for example, the use of noise reduction sleeve and spool, spool using multi-level, limiting the use of noise reduction panels, etc. using extended
Using the pipeline with control valve and restrict the flow capacity of the valve member diameter: help reduce the valve inlet and outlet fluid flow rate, without having to install additional pipe diameter pipe, etc., help to reduce costs, by replacing the flow capacity of the valve member, scalable flow capacity, through the selection of the restricted flow capacity of the valve member correctable error calculated diameter is too large
In the digital information age, will be more use of smart valve positioner or nonlinear law through digital controller, compensate nonlinear controlled object, the less preferred control valve flow characteristics to compensate for nonlinear controlled object
Trim material varies with temperature, therefore, should consider the impact of thermal expansion at different temperatures, but also consider changes in voltage levels and so on at a high temperature, corrosion-resistant materials should be considered, fatigue resistance and other properties.
        

Control valve type

Many types of valveGas Control Valve, commonly used through single-seat, through two-seater, angular, diaphragm, low flow, tees, eccentric rotation, butterfly, sleeve type, spherical and the like.Propane Control Valve in the specific choices, do the following considerations:

Mainly based on the selected flow characteristics and unbalanced forces and other factors to be considered.

When the fluid medium is a suspension containing a high concentration of abrasive particles valve's internal materials to be hard.

As a corrosive medium, try to choose simple valve.

When the medium temperature, high pressure and great change, and should be chosen disc and seat materials by temperature and pressure changes small valves.

Flash and cavitation only in a liquid medium. In the actual production process, steam and air will form a vibration and noise, shortening the life of the valve, so the valve to prevent the valve should be chosen to produce steam and air.

Solenoid - Functional Classification

Water Heater Gas Valves large diameter gas solenoid valve steam solenoid valve solenoid valve refrigerant three-way solenoid valve
Band signal feedback solenoid valve cryogenic pilot solenoid valve solenoid valve solenoid valve cryogenic gas solenoid valve
Aluminum electromagnetic pulse valve diaphragm-type solenoid valve solenoid valve fire ammonia gas solenoid gas valve
Zero pressure start the solenoid valve UHT liquid solenoid valve solenoid valve solenoid valve fountain miniature solenoid valves
Solenoid valve high pressure piston thread normally closed solenoid valve solenoid valve solenoid valve pulsed electromagnetic valve hot water
Two five-way solenoid valve hydraulic solenoid valve normally open solenoid valve oil solenoid valve DC solenoid valve
Two-way solenoid valve solenoid valve corrosion-resistant solenoid valve inlet valve signal pressure solenoid valve
Stainless steel rectangular pulse electromagnetic valve solenoid valve solenoid valve flange plastic solenoid valve explosion-proof solenoid valve
Adjustable flow solenoid valve direct acting solenoid valve solenoid valve vacuum solenoid valve Brass common solenoid valve

The safety valve works

TheRange Dual Safety Valve is a safety device to prevent the occurrence of burst pressure equipment and container or can lead to increased pressure inside the pressure vessel or exceed the limits. Range Dual Safety Valves is pressure vessels, boilers, pressure pipelines pressure system uses a wide safety devices to ensure safe operation of the pressure system. When the vessel pressure exceeds the design requirements, the safety valve automatically opens, exhaust gases to reduce the high pressure inside, to prevent the vessel or pipeline damage. And when the pressure inside the container to normal operating pressure, which automatically shut down to avoid overpressure exhaust all of the gas container, causing waste and production interruptions. Safety valve consists of a valve seat, valve (spool) and load bodies of three parts. Some seat and the valve body as a whole, some with body assembled together, it communicates with the device. There are often associated valve stem, it closely on the seat. Valve above is the loading mechanism, load size can be adjusted. When working in a certain pressure range the pressure inside the device, the internal medium acting on the valve on top of the force is less than the loading mechanism applied to the valve on top of the force, constitutes the difference between the sealing force between the valve and valve seat, so that the valve seat is pressed against the media, the device can not be discharged. When the pressure inside the device exceeds a predetermined pressure of work and reach safety valve opening pressure, internal role of the media in trouble flap above loading mechanism force is greater than the force exerted on it, so the valve from the valve seat, the valve is turned on, the device within the medium that is discharged through the seat, if the safety valve displacement is greater than the safety discharge device, the pressure inside the device that is gradually decreased, but after a short time through exhaust, namely pressure drops back to normal operating pressure. Pressure within this time to force the valve flap above loading mechanism which is less than the force applied to it, and pressed the valve seat and the media to stop discharging, equipment to maintain normal operating pressure continues to run. For chemical, environmental protection, food and other industries.

About Gas Burner Safety Valve

Gas Burner Safety Valve for electric water heaters, air heaters, also has a check valve and pressure relief valve function, to prevent backflow of water into the electric water heater and prevent high pressure electric water heater, drain the excess pressure to ensure within burst gall bladder life and avoid accidents, is a multifunctional storage water heaters safety relief valve, valve tee, inside into the inlet chamber, the outlet chamber and the safety chamber, safety chamber open drainage holes in the outlet check valve body cavity placed outside adjusting spring, by adjusting the spacing piece Limited, a resilient pad in the safety chamber, the safety valve body and drain rods, safety pressure regulator spring adjustment cap through the drain rod screwed into the safety chamber , outside the protective cover, the drain connected to the rod tip ear drainage, drainage buckle clasp ear protection, protection buckle with a drainage hole drainage fittings fixed seat. It has a backstop reflux, safety relief, drain cleaning and other functions, and easy to adjust. Pilot Safety Valves should be mounted vertically, and mounted in a container or pipeline gas interface position.

Gas valve

gas valve (no leakage of gas flat gate) is dedicated to Natural Gas Safety Valve, liquid petroleum gas, oil, etc. It is a unique design, novel structure and good sealing performance due to gas valve completely solved coking caused loose relationship, open does not move and so on, to effectively improve the sealing performance and service life, and truly achieve zero leakage.
Body with cast structure. Seat with O-ring seal and a floating seat structure preload forces, the two-way valve seal import and export; and opening and closing moments of the structure is only 1/2 of ordinary valves, can reach easily open and close the valve. Seat sealed surface inlaid PTFE, having PTFE double seal of metals and metal to metal, PTFE sealing face and clear the gate dirt effect. Gate valves, either fully open or fully closed always coincide with the sealing surface, the sealing surface to be protected from direct scouring medium, thus prolonging life. Valve fully open, the channel is smooth and linear, flow resistance coefficient is extremely small, no pressure loss, can pass the ball clean wool pipeline. Automatic removal of the valve is closed cavity pressure (see diagram), to ensure safe use. Using instructions enclosed gears hoist mechanism, clearly reflect the long-term situation of the valve opening and closing. Buried outside valve surface using coal tar epoxy anti-corrosion treatment, with life and energy pipelines.

Heater valve

gas patio heater valve is a valve, mixing hot and cold water. In fact, the valve itself is not mixed, but received a cold and hot water pipes, played a mixed role.
patio heater valves can be adjusted according to user needs its own hot and cold water mixing with water temperatures can quickly reach the desired temperature and stabilized, to ensure a constant water temperature, and not temperature, affect the flow, pressure changes, the solution bath water temperature suddenly cold suddenly heat problem when cold water is interrupted, you can automatically turn off the hot water mixing valve within a few seconds, play a security role. A thermostat mixing valve, which includes a valve body with a hot import, import cold water and mixed water outlet in the middle of the intersection of the valve spool has fixed a handle on the spool valve stem, the valve the core body is provided outside the adjusting screw, the adjusting screw through rotation of the valve body in contact with the valve body, the inlet flow rate adjusting means provided with flow regulating means is provided in contact with the inlet pipe joint, in Fittings are equipped with a piston, the piston slidably suit also regulate body regulating body of the wall opening with a flow adjustment holes, regulate body fitted between the outer edge of the piston compression spring. When the water temperature adjusted by adjusting the screw rotating body fixed spool, then no malfunction leaving water temperature changes, and the next time you use also again without re-adjustment in inlet flow regulator is also equipped with means to ensure that unchanged into the water, thereby maintaining a constant water temperature.

gas valves valve: Pilot valve

When the high pressure gas valve output diameter or larger, with a direct regulator regulator spring, the spring stiffness necessarily too large, flow changes, the output pressure hydraulic cutting machine fluctuations, the structure will also increase the size of the valve . To overcome these shortcomings, can be pilot valve. basically the same gas valves pilot valve works with direct-acting. pilot valves used is determined by a small direct-acting valve sealing fitting supply. If the small direct acting pressure reducing valve mounted inside the body, it is called an internal pilot valve; If small direct acting pressure reducing pilot operated safety valve installed in the main body outside, then called external pilot valve . Compared with the bsp thread fittings direct-acting valve, the valve is increased by the nozzle 4, 9 and fixed orifice baffle chamber consisting of a nozzle flapper B amplification link. When the distance between the nozzle and the baffle when small changes, it will cause pressure in the chamber B significant changes roots occur, thus causing the diaphragm 10 has a larger displacement, to control the vertical movement of the spool 6, the inlet 8 large or open valve port off small, to improve the sensitivity control on the spool, which improves the regulation accuracy....

The valve is in the pipeline fluid delivery system control unit

The gas valve is in the pipeline fluid delivery system control unit, which is used to change the channel section and flow direction of medium, with diversion, off, throttling, non-return, diversion or overflow relief functions. For fluid control valves, valves shut-off valve from the most simple to the most complex automatic control system used in its many varieties and specifications, the valve nominal diameter from large to tiny instrument valve diameter up to 10m industrial pipeline valves. Can be used to control the water, steam, oil, gas, mud, a variety of corrosive media, liquid metals and radioactive fluids and other types of fluid flow.

gas valves are safety devices supporting a new gas pipeline project

Used to cut, turn, regulate the gas pipeline, with good sealing performance and off control characteristics. For a variety of city gas medium pipeline gas, liquefied petroleum, natural gas, oxygen, etc.. Classification Gas valve widely used variety,bsp port classification will be more. The total can be divided into two categories: The first automatic valve: the ability to rely on the gas itself and the action of the gas valve valve itself. Oxygen rapid shut-off valve Oxygen rapid shut-off valve Such as check valves, control valves, pressure reducing hydraulic valve manifold valves and so on. The second class driver valve: With manual, electric, pneumatic valves to manipulate the action. Such as gate valves, globe valves, throttle valves, butterfly valves, ball valves, plug valves, etc.

gas water heater gas valves work status

Open the total gas valve, open the gas valve, gas valve pressure difference into A, B two-bedroom; open water valve, cold water through the water main valve all the way into the water pressure Interlock SAE Flange valve, the other way flow heat exchanger, the rubber membrane on both sides pressure range, the pressure to the base film movement, water vapor driven ejector linkage movement to the left, the middle of the toggle lever plunger ejector left with the power turned on the power switch.
Immediately after power electric controller high-voltage pulse generating sparks, while a powered miniature solenoid valves, gas valves of the gas burner valve into a small fire,bsp thread port and mating stud end a spark ignited a small fire. Water vapor movement to the left in place when the mandrel linkage, to open a valve, the valve 2 is not open at this time since the gas does not enter the main burner.

Range dual safety valves Features

Range dual safety valves Features
1, small size, light weight.
2, the pressure detection device using a bellows, good durability.
3, the pressure can be adjusted by rotating the plastic hand wheel, without tools.
4, built-in filters to protect against dust and impurities affect control valve performance.
5, thin film-type valve using threaded connections, easy installation.
6, the valve seat are made of stainless steel, long service life.

Direct role in regulating valve

By range valves, the inlet pressure is reduced to a desired outlet pressure, and rely on the energy of the medium itself, so that automatically maintain a stable outlet pressure safety valve. From the point of view of fluid mechanics, pressure reducing valve is a local resistance to change spending components, that is, by changing the throttle area, so that the kinetic energy of change velocity and the fluid, resulting in different pressure loss, so as to achieve the purpose of decompression. And then rely on regulation and control and regulation systems, so that fluctuations in the valve pressure equilibrium with the spring force, so that the valve pressure is kept constant within a certain error range.

Works of solenoid valve

Magnet valve in the closed chamber, at different locations with holes, each hole leads to a different pipeline, the middle chamber is a control valve, both sides are two electromagnets, which face the magnet coil is energized the valve will be attracted to which side to different file live or leaked oil discharge hole by controlling the movement of the valve body, and into the hole is always open, the hydraulic oil will enter a different outlet pipe, and then to push oil through the oil pressure just a piston, the piston and drive the piston rod drive mechanism moving. Thus by controlling the solenoid current is controlled mechanical movement.

Gas Heater Valve Installation Notes as follows

Gas Heater Valve Installation Notes as follows:
1, the installation should pay attention to the body of the arrow should be consistent with the medium flow. There can not be installed in direct dripping or splashing water.
2, the magnet valve should be mounted vertically upwards.
3, after installation, the pipeline may not have a reverse pressure. And the need to power several times, making it officially put into use only after the proper temperature.
4, the pipeline should be thoroughly cleaned before installation. Access the media should be free of impurities. Valve installed before the filter.
5, when a fault occurs or purge solenoid valve, in order to ensure that the system continues to run, install bypass device.

The role of gas water heater solenoid valve

Gas water heater valve dual protection, that pressure is started, the water film by water pressure, push the left, turn the machine power, but also to a spring cover, top to the left. (This is another source of air control switch), it is the mechanical action, if the water film, there had been the dregs, the scale, if the water film back in place, and you do not use heater valves, it would leak, accidents.

Control valve is a control system execution unit

Industrial automation and process control valve is a control system execution unit, it's normal or not directly related to the process control system can run normally. Propane Control Valve installed in a variety of pipeline systems used to control a variety of media flow, pressure and temperature, environmental conditions, the control composition and physical properties of the medium, etc., have great flexibility and reliability of their control influences. And I use the plant coke oven gas  control valve installed on top of the push-type furnace coke oven gas pipeline, due to the specific component to control the media and high temperature environment of the control valve control flexibility and reliability there are a lot of adverse effects.

Valve material shall not be less than the pipe material

According to temperature and pressure, corrosive appropriate choice of material, safety valve burner valve material shall not be less than the pipe material. Also because it contains tar, and therefore increase the steam purge gas burner safety valve attached to prevent the tar and the bearing. Also the stem to extend (due to high temperatures, and bearing purge, dual bearing design, etc.), since the valve actuator for large diameter, high temperature, we recommend the use of hydraulic actuators, valves can be welded or flanged connections. Recommended flanged, welded mainly worried connection is possible due to the welding heat stress causes the valve lift at high temperature deformation, French door leading to leakage.

QS company's main valve

QS company's main valve are: reducing valve (gas valve, adjustable valve, bellows valve, piston valve, steam valve, pilot valves, air valves, nitrogen valve, heater valves, self-operated valves, proportional valves), safety valve, insulation valves, cryogenic valves, ball valves, globe valves, gate valves, check valves, butterfly valves, filters, discharge valves, diaphragm valves, plug valves, piston valve, balance valve, valve, steam traps, pipe clamp valve, drain valve, exhaust valve, mud valve, pneumatic valves, electric valves, pressure valves, pressure valves, low pressure valves, hydraulic control valves, vacuum valves, rubber lined valves, lined valves, designed for the production of pipes used for gas applications.

Gas water heater is mainly made up of body assembly

Gas water heater is mainly made up of body assembly, the main gas burner valves, heat exchangers, safety devices and other components. (Also including the water heater flue stack, strong emission-type water heaters strong emission devices. Valve assembly controls the entire water heater work program, which includes valves, valve, micro-switches and ignition, etc. heater installation , into the water, should be installed on the outlet pipe, water heater gas valves. when using the water heater, turn on the gas valve and the inlet valve. when you open the valve, igniter and micro-switch control to ignite a small fire, and then light the fire . electronic pulse ignition, the kind of igniter to facilitate saving, simply press on it with your fingers, and safety, security incidents will not occur due to unexpected flameout, once stall condition occurs, the control system in time closed solenoid valve, shut off the gas passage, while some food is no small fire, direct ignition of the main fire.

Gas water heater installation location

Gas water heater installation location should be about 1.4 meters above the ground, whichever is appropriate, not too much distance between the upper and lower staggered, it should be based on whichever screen at eye level, so that the switching gas valve for water heater is also more convenient. Not good at water heater gas heater control valve installation of home smoke vents open hole position is also limited, which requires the actual size of the water heater to the wall drawn, find the best location. Finally, with regard to the installation location of the water heater line, the end of the hose must be made "L" type, absolutely not straight up and down installation, but most water heaters, hot water outlet, are facing above the water heater.

Gas valve supplier gas valve supplier

QS is a strong research and development, production and sale of gas valve in one of the specialized gas valve supplier. At present, production of export ovens, heaters, camping stove, the oven used in key components and valve assembly of the gas valve assembly and related accessories. We have a strict quality control team; products with good quality by the world's leading manufacturer of gas appliances of all ages. Meanwhile, the company commissioned for all products purchased worldwide have valid product liability insurance, to provide customers with quality assurance worldwide.

Solar water heaters automatic control valve

Solar water heaters, automatic control valve is a tank full of Sheung Shui automatically closes to prevent reflux, hot and cold water discharge regulation, and thermostat valve function unity, without staff present to take care. Its basic idea is to use the principles and change the water tank full overflow pressure after pressure sensing body and driven by the action of the spring, the plunger valve piston reciprocating linear displacement and hand-spool rotational adjustment, the plunger valve different positions of the core holes on the water intake slots are aligned, to automatically stop the Sheung Shui, prevent backflow and cold adjustment purposes.　

Gas water heater works

Gas water heater works: when the gas water heaters work, open the gas control valve, gas valve into the pressure difference between A, B two-bedroom; total valve to open water, cold water through the valve all the way into the water total water pressure valve, and the other all the way to the heat exchanger, pressure on both sides of the rubber membrane ranging from pressure to the base film movement, driven by water vapor movement to the left mandrel linkage, toggle lever jack central power switch over to the left so that the power connection jack pass. Electric controller generates high-voltage pulse immediately after power spark, while the miniature solenoid valve 1 is energized, the gas valve into the small fire by the burner, spark ignited a small fire. Water vapor movement to the left ejector linkage in place when the gas burner valves is opening, this time due to valve 2 is already open, the gas did not enter the main burner. Sensor needle was a small fire heat, feel the small fire flame ionic conduction effect, the signal is fed to the electric power supply controller for miniature solenoid valve 2, the valve is closed. From the total gas no longer flows to the valve chamber A gas continuously into the B chamber B when the pressure chamber is greater than the pressure chamber A rubber due to the pressure difference across the membrane is pressed against the A compartment, rubber membrane link A room with the movement of the valve 2 is opened, the gas chamber through C, D room to the main burner, formed by a small fire lit the fire, the flame of high temperature flue gas flowing through the cold water heat exchanger to produce a continuous rapid heating hot water heaters into the normal working condition. A remaining gas chamber so that self-extinguish small fires burn.

Safe use of gas water heaters

Always check the gas supply to the water heater's entire pipeline system, a foam applicator with soap and water and all the joints in the pipeline, in order to check the gas pipeline, gas valae and the external hoses for cracks, aging, loose, such as failure to ensure that no air leaks . Once the leak occurred, it should first close the gas burner valves, open windows and doors ventilation, lighting and electrical switches Do not flip the power switch or the water heater to prevent sparking fires. Ignition or flame when the burner igniter pay attention to check whether indeed ignite or extinguish.

Water heaters should pay attention

When using the heater, open the gas valve and the inlet valve. When you open the valve, igniter and micro-switch control to ignite a small fire, and then light the fire. Electronic pulse ignition, the kind of igniter to facilitate saving, simply press on it with your fingers, and safety, security incidents do not occur by accident flameout occurs once stall condition occurs, the control system can be turned solenoid valve, shut off the gas passage. However, some water heater does not have a small fire, direct ignition of the main fire. Combustion gas in the combustion chamber, the heat through a heat exchanger to heat the water, a steady stream of water flowing out from the outlet. Shut off the safety gas valve, the water heater stops working.

About Gas Heater Valve knowledge

Under water heaters have a big twist valve can control water, called gas heater valve， winter has put the valve open, not closed, because every day with hot water, if in the summer, put this off, take a bath when once on the line, run out off, this valve is used in water, so use hot water when we must open it, the pipe from the water heater is connected to the gas pipe into the gas, the gas valve in the gas iron pipe is generally connected to gas there hoses with hot water when opened, immediately turn off the hot water runs out. Food intake valve is what I said there, this valve is farthest from the water heater, you can look for in the hose with iron pipe connection, I think it should have, and if not, can not control the gas, like stoves the gas valve on the same valve. You look at it, the manufacturers will have to install the gas valve.

Safety valve in the chemical industry advantage is reflected in where?

In the chemical industry, the safety valve to ensure the effective use of staff's safety production, as well as their physical and mental health workers. And why only that chemical companies to choose safety valve it? Its advantages embodied in those areas? First, because the safety valve of Static-tight seal, with such safety valve is in operation, it is possible to completely prevent media leaks. Safety valve to use, no use of a separate lubricant and cooling water, reduce input costs, but also reduce energy consumption.
Safety valve is to synchronize the rotation of the coupling drag, friction and will not have any contact with. Natural Gas Safety Valve to reduce the impact of vibration motor, and the impact caused when the vibration of the motor. In the medium through, the amount of lubricating the inner and outer magnetic rotor will be relative to the safety valve and the motor has a protective effect. Valve actuator in the case of work, but also may appear stuck phenomenon, magnetic rotator will automatically fall off, to protect the body does not hurt.

Applications Hydraulic safety valve

Hydraulic valve is widely used in hydraulic power systems and hydraulic equipment safety devices, but also can be used as pressure limiting device, is a special valve, which is different from the conventional valve, conventional mechanical valve metal spring as a driving force, only Low pressure can limit encountered more pressure than 10Mpa limit pressure, can only increase the volume of pressurized to do design, traditional pressure limiting valve acts on the high pressure and ultra-high pressure hydraulic power systems and hydraulic equipment necessarily bulky , complex, difficult to manufacture large, high production costs; in the course of large metal spring fatigue change ambassador pressure limiting parameter fluctuations, often adjust in order to ensure normal use. Since large steel spring material can not be anti-corrosion materials such as stainless steel production, poor product corrosion resistance, valve life is not long.
"Pneumatic valve" using high-pressure gas as power source, use to change the size of the cylinder head and Natural Gas Safety Valve body proportion design, product structure is simple, small size, limited pressure stability can be achieved from 0.1 Mpa Mpa of thousands limit pressure, significantly reduce product cost. By "pneumatic safety valve" effect also specially designed pillar pressure gas cooker safety valve in the hydraulic mine support system. Achieve a slow process of formation pressure to bear so that the pressure (that varies with the pressure to maintain a constant pressure formation pressure) and fast so that the pressure (ie, roof collapse pressure instantaneous relief emptied within one second) in order to ensure that equipment and personnel lossless Security.

Meaning continuous improvement where hydraulic valve

With the study of the safety valve, safety valve structure to improve and perfect performance, provides a valuable theoretical and practical basis, in order to ensure stable operation of hydraulic support, fully mechanized coal face of production safety have some practical significance for hydraulic support . Hydraulic support as a safety valve control system, the key element to maintain the entire stent system safe and efficient operation. So for the design of safe, reliable, durable and high flow valve has been the focus of scientific research today, the gas brass safety valve for the study conducted a comprehensive study. Liquid flows through the orifice in the maximum speed, the opening of different size and pressure of the overflow speed also has the most direct impact.
With the increase of inlet pressure, flow speed increases, the minimum pressure at the orifice becomes smaller, and thus prone to cavitation, whirlpool and so on. The larger and smaller openings of the pressure, at maximum speed, the greater the orifice. Safety valve pressure drop is mainly distributed in the orifice at the orifice in the vicinity there is a clear area of ​​low pressure, and the smaller the opening degree, low pressure is smaller; the greater the pressure, the low pressure is smaller.

External pilot valve opening and closing parts of factors

Pilot valve is a safety valve. Pilot valve opening and closing parts by the external force is normally closed state, when the media pressure equipment or pipeline increases, exceeds a predetermined value open automatically discharged outside the system through the media to protect the pipeline or equipment medium pressure exceeds values ​​specified.
Pilot valve is mainly used for boilers, pressure vessels and piping, control pressure does not exceed a predetermined value, for personal safety and equipment operation plays an important protective role. All kinds of safety valve should be mounted vertically, the outlet Water Heater Gas Valves should be no resistance, to avoid compression phenomenon. Gas Valves For Patio Heater before installation should be devoted to test and check their tightness. The use of the safety valve should be checked regularly.

Commonly used materials cryogenic safety valve brief

Suitable for cryogenic Gas Heater Control Valve (-100 ~ -30 ℃) of the host material has a low temperature and low pressure parts of austenitic stainless steel ferritic and martensitic steels. Low-temperature austenitic stainless steel have ASTM A351 CF8M, CF3M, CF8 and CF3, ASTM A182 F316, F316L, F304 and F304L, ASTM A433 316,316L, 304,304L and CF8D. Low pressure parts ferritic and martensitic steels have ASTMA352LCA (-32 ℃), LCB, LCC (-46 ℃), LC1 (-59 ℃), LC2, LC211 (-73 ℃) and LC3 (-100 ℃). ASTMA352 standard primary lower material prices, but its chemical composition smelting must have a reliable and require very strict internal control standards plants. Heat treatment process is complex, requiring multiple for quenching, so as to achieve low-temperature impact toughness requirements of the standard requirements, long production cycle. Low temperature impact toughness can not reach the standard, it does not allow for feeding cold steel.
Therefore, only the production volume, and can become a smelting furnace when used, and in general, the choice of austenitic stainless steel.

Selection of the following aspects should be considered a safety valve

Design of the choice of what type of safety valve, mainly determined by the characteristics of the process conditions and the working medium of the device. Under normal circumstances, boilers, pressure vessels, most use a spring-loaded safety valve. If the working medium container of toxic, flammable and explosive, the selection of a closed valve. Boiler and pressure vessel and safety discharge larger wall thickness and less affluent, and the best selection of low-pressure vessel safety valve.
Pressure relief valve is based on nominal range of design and manufacturing standard series, each Water Heater Gas Valves unit has a certain working pressure range. Boilers and pressure vessels shall be the selection of the appropriate choice of the maximum allowable working pressure safety valve.
Selection of safety valve emissions, its emissions must be greater than safety discharge device, so as to ensure the boiler or pressure vessel overpressure Aluminum safety gas valve can be discharged in the open part of the media, to avoid the pressure continues to rise inside.

Safety valves and other valves of different

Safety valve is special equipment (boilers, pressure vessels, pressure piping, etc.) a limit on the pressure relief safety play an important role in the annex. Reliability and performance of its action is directly related to equipment and personal safety, and closely related to energy conservation and environmental protection. But the safety valve and other Pilot operated safety valve can play a similar role at times confusing, it should be clear the following points:
1, the safety valve is mounted directly on the special equipment, the management and performance to meet the quality and technical supervision departments and relevant special equipment requirements. It is a static pressure from the valve before the media - driven automatic pressure relief device. Characterized by a sudden opening of the full opening action. For gas or steam occasions.
2, relief valves and patio heater gas valve on the structure and performance similar to his, are more than open automatically discharge pressure inside the media, in order to ensure the safety of the device. Relief valve, also known as relief, is a static pressure from the valve before the media - driven automatic pressure relief device. It opened with the pressure exceeds the force increase proportionally open. Mainly used for fluid applications.
3, safety relief valve, also known as safety relief valve is a pressure-driven by the media automatic pressure relief device. Use different according to both valid for the safety valve is also valid for the relief valve.
4, emissions by the required safety valve, relief valve no specific demands. In general, the safety valve should be more reliable than the relief valve.

Valve uses

Valve is a tube. It is used to change the channel section and flow direction of medium, an apparatus for controlling the flow of the transmission medium. Specifically, the valve has the following purposes:
Connect or disconnect the line of media. Such as valve, closing valves, ball valves, plug valves, diaphragm valves, butterfly.
Regulation, control the pipeline flow and pressure of the medium. Such as throttle, regulating valves, Parts Oven Safety Valve, safety valves, etc.
Change the direction of media in the pipeline flowing. A dispensing valve, three cocks, three or four-way valve and the like.
Stop the line of medium back. Such as a variety of different structures valve, bottom valve.
Separation medium. Such as steam traps of various structures, air trap.
Instructions and regulate fluid levels. Such as liquid level indicator, level regulators and the like.
Other special purposes. As the temperature Gas Control Valve, overcurrent protection emergency shut-off valve.

Safety valve selection factors should be considered:

(1) selection of the Water Heater Gas Valves structure, depending on the device characteristics of the process conditions and working medium. Under normal circumstances, boilers, pressure vessels, most use a spring-loaded safety valve. For toxic, flammable and explosive media, the selection of a closed valve. Boiler and pressure vessel and safety discharge larger and smaller in thickness and low pressure container the best selection of safety valve.
(2) safety valve operating pressure range of boilers and pressure vessels should be considered the maximum allowable working pressure of selection.
(3) Gas Top Burner Valve displacement must be greater than safety discharge device, to ensure that the boiler or pressure vessel overpressure valve can be discharged in the open part of the media, to avoid the pressure continues to rise inside.
(4) The boiler safety valve, the total emissions must be greater than the boiler maximum continuous evaporation, and the drum and superheater safety valve opens after all, the steam pressure in the drum must not exceed 1.1 times the design pressure.

Gas heater control valve classified by connection

(1) screw type (tube) installation and connection. Gas Heater Control Valve ports connecting screw fittings and pipes and other components, and thus fixed in the pipeline. This approach applies to simple hydraulic system.

(2) screw-mounted connection. Each port gas control valve are arranged in the same mounting surface, and there is a corresponding fixed oil port connecting plate with screws and Heater Gas Valve, and then pipe fittings and pipe connections with other elements; or put a few in a gas control valve with screws manifold

On different sides of the punch in the manifold, each valve is composed of communication loop. When removing the gas control valve due to other components without removing connected, so this installation connection broader application.

(3) Modular installation and connection. Below the gas control valve connection joint surface, the oil ports respectively in these two surfaces, and the same size gas control valve ports connected to the same size. Each gas control valve in addition to its own function, but also play a role in the oil passage, the gas control valve will be stacked into each other loops, no pipe connections, so the structure is compact, small pressure loss.

(4) Flange mounting connection. And screw connection similar, but instead of flanged screw fittings. For Path! 32_ or larger flow systems. Its high strength, reliable connection.

(5) cartridge installation and connection. No separate body such Propane Control Valve, unit body from spool and sleeve and other components of the cartridge in the pre-hole block, connecting screws or the cover plate, and within a block passage through the various gas control valve connected to form a circuit block plug body and play a role in the pipeline. This is a new way to adapt to the installation and connection of the hydraulic system integration and developed.

Category of gas heater control valve

Hydraulic Gas Heater Control Valve is a hydraulic system to control fluid direction, pressure and flow components. With these valves, actuators will be able to start to stop, direction, speed, action sequences and the ability to overcome the load control and regulation, so that all types of hydraulic machinery can be required to work in a coordinated manner.

Classification of hydraulic valves

A zoning [Press]

Hydraulic valves can be divided into the directional gas heater control valve (check valve and switching valve), the pressure gas heater control valve (such as relief valves, pressure reducing valves and sequential valves, etc.) and a flow Gas Grill Control Valve (such as throttle and governor valves, etc. ). These three types of valves can be combined with each other according to need to be a combination of valve, such as a one-way valve Chuan page order, one-way throttle valve, electromagnetic relief valve, etc., making it compact and simple connection, and improve efficiency.

[B] by the working principle

Hydraulic valves can be divided off valve (or on-off valve), servo valves, proportional valves and logic valves. Off valve after it is set only in the state it is set to work, this chapter will focus on the most widely used valves. Servo and proportional valves can be continuously or proportional control system according to the input data signal. Action elements press pre-programmed logic logic Propane Control Valve control the execution of the program.

Gas control valve's continuous loop

1. A continuous loop Gas Control Valve positioning plate cable fault locator board and control board is disconnected cables, fault or short circuit. Such as persistent cycle time over two minutes, the gas control valve to stop the rotation, and displayed on the screen -E1- and blinks. 2. Locate the board is damaged gas control valve leakage, corrosion, or the Hall element positioning plate full damage, leading to not be located. 3. The magnet damage of Gas Grill Control Valve or damage to the magnet magnetic insufficient, and the Hall element is positioned plate can not produce a signal. Magnets can not be used in strong vibration or strong magnetic fields such as environment.

The problems of gas heater valve in working process

gas heater control valve does not operate a) the system does not run A, flow-type softening valve, run the flow is set to 0. B, automatic filter Gas Grill Control Valve in the F-00 to F-01 or greater. "Run" position C, the positioning plate of the Hall element is damaged. The main cause of valve leakage. D, F78 distribution valve gas heater control valve inlet or drain plug. Automatic gas heater control valve does not operate A, main board failure. B, motor, motor control board is connected with the motor pinion or transmission damage, leading to the terminal large gear on the motor can not drive the spool rotation. C, with a hand on the handwheel Gas Control Valve, such as F63, F67, F68, intermediate gear and motor gear or gear wheel slip terminal. D, water quality is poor, resulting in a large resistance between the sealing sheet, the motor does not move with. E, the valve is stuck between objects or large gear motor gear and terminal objects resting motor with fixed. F, a foreign body water, damaged or stuck valve. G, the water pressure is high, the motor does not move with.

Gas heater control valve does not work

1. softener or Gas Control Valve no longer a student), the controller can not control the rotation of the motor A, the gas heater control valve power interruption: damage to equipment failure or power adapter (no display screen). If no power but no display screen, can be used the same type of power supply for testing; now Run the new Propane Control Valve mainly uses two types of power adapters, output voltage and current are DC12V, 1500mA and DC24V, 1500mA. B, motor and motherboard cable shorted. Water immersion or valve leakage control panel, this phenomenon can occur when such installation. C, the motherboard is damaged and can not control the rotation of the motor. D, motor damage. Mainly caused by patio heater control valve leakage. 2), the regeneration time setting unreasonable time or flow regeneration program shows yet to come, but the actual water hardness has been exceeded. A, time type, the regeneration time is set incorrectly, exceed the maximum of water softener system cycle. If this should be renewable once for two days, is set to 20 days renewable once. B, flow type, the total flow is not cut down or decreasing slower than the actual speed, the meter is damaged, no instantaneous flow. For two main reasons: ① suck iron impeller is stuck or foreign body material, can not be rotated. ② meter meter cord is damaged or loose with the motherboard socket. ③ control board failure. 3), the motor can not control spool rotation.

The use of gas heater control valve

Pressure range of different operating pressure range of gas heater valve is lower than the hydraulic valves. Working pressure gas heater valve is usually less than 10bar, few can reach within 40bar. However, working pressure of the hydraulic valves are very high (usually less than 50Mpa). If the gas heater valve in excess of the maximum allowable pressure. Often a serious accident. Use different characteristics than the general gas heater valves hydraulic valves compact, light weight, easy to integrate installation, high Gas Heater Control Valve operating frequency, long service life. gas heater valve forward low power, miniaturization direction, low-power solenoid valve has appeared only 0.5W of power. Can be directly connected with the computer and PLC programmable controller can also be mounted on a printed circuit board with electronic devices, connected via a standard gas-electric circuit board, save a lot of wiring for pneumatic industrial robots, complex manufacturing assembly line and other occasions.

Performance comparison gas heater control valves and hydraulic valves

  Energy may be different pneumatic components and devices Pneumatic gas station method (a) use, depending on requirements and control points to adjust their working pressure Gas Heater Valve. Hydraulic valves are equipped with the return line to facilitate the collection of used hydraulic oil tank. gas heater control valve can be directly compressed air to the atmosphere through the exhaust port. (B) leakage of hydraulic Gas Control Valve for the different requirements of outward leakage demanding, but a small amount of leakage of internal components is allowed. gas heater control valve, the valve seal in addition to the gap, in principle, allow the internal leakage. Internal pneumatic valve leak there is a risk of accidents. For pneumatic tube, it allows a little leakage; leaking hydraulic pipes will cause the system pressure drop and pollution of the environment. (C) for lubrication requirements of different hydraulic system working medium for hydraulic oil, Gas Heater Control Valve there is no requirement for lubrication; pneumatic system working medium is air, the air without lubrication, so many pneumatic valves require mist lubrication. Gas heater control valve parts should be the choice of materials less susceptible to water corrosion, rust, or to take the necessary measures.

The analysis on gas heater valve

Acetic acid as important chemical intermediates, has been widely used, and its derivatives are hundreds of species. Growing downstream Gas Heater Valve acetate fibers, paints, adhesives and other industries and downstream industry chain development efforts acetate continued to increase for the development of Chinese acetic acid industry provides a good background environment and opportunities.
     Because of two devices in the selection and amount of catalyst synthesis loop size respects fundamentally different from the first phase, so the process operation there is a big difference, especially in the gas heater valve synthesis reactor since the circulation line with strict temperature requirements . To be able to achieve the desired operating results, the temperature control loop pipeline between 185 ~ 195 ℃, pressure rating between 2.8 ~ 4.0MPa. But in most of the use of the pipeline is lined with ordinary type PTFE (polytetrafluoroethylene) material plug, when the system is running two to three months time to shut down for maintenance, unable to find the Gas Heater Control Valveclosed, should not be process. Examination revealed plug lined with varying degrees of loss, more serious tear occurred. In order to ensure normal production, this problem is analyzed and processed.

The introduction of gas heater valve

Below the level of progress of science and technology, China's chemical production automation has also been a rapid promotion, to achieve precise control of flow, pressure, level and temperature, among chemical automatic control system, the control Gas Heater Valve is an important part of the implementation of device, the model and the quality of the installation for the regulation loop regulation quality has a significant impact, if you adjust the selection and application of improper gas heater valve, regulating gas heater valve will be a serious threat to the life, the Water Heater Gas Valves is serious and even cause the system to stop accidents.

     In the development of industrial automation, pneumatic control gas heater valve actuators as a good has been widely used, the kind of control gas heater valve has a reliable action, simple structural features, for the protection of the safe operation of great significance, the following on automatic control for chemical process pneumatic control Gas Heater Control Valve selection and application of in-depth analysis.

Oven gas valve application advantages

Storage tank to replace the current pilot hydraulic control oven gas valve in the heavy hammer hammer slow closing check free standing ovens gas valve in the accumulator tank, the weight becomes fluid accumulator potential, not only to save the consumption of the long-running support hammer energy, but also improves the performance of the hydraulic system of packing, while also ensuring the maintenance staff oven gas valve runtime safety.

    Storage tank hydraulic control slow closing check oven gas valve and Range Top Burner Valve application advantages

     Storage tank hydraulic control slow closing check oven gas valve control mechanism novel, rational design, small size, light weight, simple structure, functional, flexible and reliable operation, nice appearance, energy and materials, easy maintenance, easy to implement pump oven gas valve interlock control and computer centralized control. When a power outage, you can shake off oven gas valve manual pump. Gas Grill Control Valve opening and closing, the action is very convenient.

Gas heater valve positioner Troubleshooting

Intelligent gas heater valve positioner by standard diagnostic function although can identify the main diagnostic gas heater valve state error, the direct reasons but for Barbecue Valves to identify fault is a very difficult thing, users need a diagnosis report of feasibility to find the fault reason "". So the current intelligent gas heater valve positioner manufacturers in addition to provide standard diagnosis function I extended diagnostic function, to meet the various needs of users. Expansion mainly focus on the following two aspects:



(1) installation auxiliary sensors in intelligent gas heater valve positioner, the actuator need to disconnect, the use of this sensor to detect changes at this time of the pneumatic input and output signal size, so as to judge the work piece and the actuator gas heater valve is normal. For this method, the vast majority of manufacturers are to measure the load to the actuator diaphragm pressure sensor is installed on the pressure, the pressure and the gas heater valve position. Online mode of operation, only recording the signal gas heater valve running down, can provide friction and pressure Range Dual Safety Valve, so that we can come to a more effective "diagnostic report".



(2) through a special program software in reference to the initial gas heater valve position slightly changed, whether online or offline, the dynamic response of change will signal is recorded in the memory of smart gas heater valve positioner, thus forming a clear change image, through the change of image analysis is the delay time and the time of transmission is increased or reduced, and combined with the analysis method of mathematical simulation module, diagnostic analysis to predict the operating state of the gas heater valve parameters by image analysis. It can also get a diagnosis of "report", is convenient for the user to identify the cause of the malfunction.



(3) is completely realized in the internal process of diagnosis and testing should be locator, and according to the similar traffic light coding system automatically sends the alarm state, at the same time the alarm is process control system shows that the repair personnel interested in alarm at the appropriate authorization level, gas stoves freestanding is not interested in the operator information analysis function and processing, prompt repair repair personnel will appear. The prospect of the development of intelligent gas heater valve positioner diagnosis function in three, petrochemical field.

The operation principle of gas heater control valve positioner

1. When the gas heater control valve is initialized, the performance of the entire gas heater control valve has been tested, the parameters are optimized, if you have problems, it will send alarm information. Alarm information: Preventive alarm - control gas heater control valve condition with mild wear, the future will continue to wear, but also to work gas heater control valve; maintenance alarm - badly worn patio heater control valve status, the current can still work, but may occur at any fault ; failure alarm - Remind equipment operators, gas heater control valve failure has occurred. Reaction detection information which appears on the control gas heater control valve assembly; cause failure cause analysis - how to solve the failure.

     2. Before use through smart gas heater control valve positioner can control gas heater control valve original initialization, all gas heater control valves original state after initialization information is stored locator. Such a control Gas Water Heater Valve with intelligent positioners start automatic initialization of work, including determining the mechanical travel range locator best indicator parameters and automatically adjusts its work, the locator information and indicators signal parameters applied mechanically determined based on the current algorithm to control the gas heater control valve opening and closing. Working condition of the Gas valve supplier is normal or not is crucial, locator real time detection and analysis of its uninterrupted, once a fault, it will send an alarm signal detection and analysis of all the results are stored in the memory location, as well as provide diagnostic information to repair malfunctioning equipment and other aspects of the operator or maintenance engineer.

Oven gas valve positioner

In the petrochemical production, smart Oven gas valve positioner compared with conventional Oven gas valve positioners, has some significant advantages and application characteristics. Easily corrected during commissioning process, the smart Range Top Burner Valve positioner operation than conventional Oven gas valve positioners, simpler and easier to grasp. Compared with the conventional Oven gas valve positioners, smart Oven gas valve positioner does not need to adjust some other control devices will be able to assist in the identification and control of automated operation, and in the process can be automated control to adjust the optimal state, it is possible to adjust the different control requirements optimized settings. For example, in Stove Top Burner Valve petrochemical production process, if you need to adjust the control Oven gas valve to force all off, it's intelligent operation control system will adjust according to the input signal changes its control to adjust production runs were forced off the equipment, in order to achieve regulation and control system forced all closed set. All this had to be attributed to the use of smart Oven gas valve positioner software control system is an pilot operated safety valve setting of the software system, running in using an automatic configuration program.

Oven gas valve positioner advantages of traditional positioner

Because the petrochemical industry production is flammable, explosive, toxic, corrosive, poor working conditions and other characteristics, so it is a high risk industry, once accident occurs, often causing very serious casualties and property losses. Therefore, high risk of forced petrochemical enterprises to increase automation and intelligent control equipment investment, production process control requires a lot of control Oven Gas Valve and its diagnosis and maintenance, so as to realize the efficient management of process safety enhancement, thus the risk as much as possible, down to the lowest. Intelligent Oven gas valve positioner control Oven gas valve as the main component, the continuous development and improvement of diagnostic technology, intelligent Oven gas valve positioner diagnosis technology plays a more and more important role in the diagnosis, control and detection of the petroleum chemical industry production process.
First, intelligent Oven gas valve positioner in traditional Oven gas valve positioner
The Oven gas valve positioner is composed of 1 traditional regulator or output safety gate sent 4 ~ 20mADC current input coil, the coil is located in the moving iron magnetization and work. Because the moving iron in permanent magnet field generated by the magnetic field, therefore, the two interaction of moving iron to produce deflection torque, the fulcrum as the center deflection. As the signal increases, the leverage the left should be downward movement. When the baffle is fixed on the lever is near the nozzle, the amplifier output pressure back pressure increases, the role of the amplified film head to wither section Oven gas valve, the Gas Grill Control Valve stem down. The stem of the displacement through the pull rod are converted into angular displacement feedback shaft and the feedback plate, then the feedback through the range pivot to body movement. Feedback spring is fixed at the other end of the lever on the stretch, produce a negative feedback torque, so that the lever balance, while the stem is also stable in a position to determine the corresponding, to realize between the signal current and position proportional relationship. However, the traditional Oven gas valve positioner amplifiers constant throttling orifice prone to clogging, back pressure maximum, the amplifier gas cooker safety valve stuck, the nozzle and baffle strict shortcomings.