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.