Pneumatic actuator failure and protection methods

Pneumatic actuator is an indispensable structure in the process of industrial production automation, with high frequency of use, simple failure due to high temperature, high pressure and serious social and environmental problems, resulting in the need for repair. The actuator power includes electric, pneumatic and hydraulic, but the fault and protection management methods of the pneumatic actuator system are mainly introduced here. The analysis results are as follows

Pneumatic actuator failures include clogging, leakage and control coil burning. Here, we will be based on these three basic conditions, a simple analysis of the problem presented in the repair method.

The pneumatic actuator is an executive device that uses gas pressure to drive the opening and closing or regulating the valve, and is generally called the pneumatic head. Zhejiang Shuangzhong automatic control Valve Co., Ltd. on the various skills of the pneumatic head, the characteristics of the pneumatic actuator compact double piston gear, rack type structure, accurate engagement, high efficiency, constant output torque. When the compressed air enters the pneumatic actuator from the A nozzle, the gas pushes the double piston to the two ends (cylinder head end) in a straight line movement, the rack on the piston drives the gear on the rotating shaft to roll 90 degrees counterclockwise, and the valve is opened. At this moment, the gas at both ends of the pneumatic actuator valve is discharged with the B nozzle. On the contrary, when the compressed air enters the two ends of the pneumatic actuator from the B nozzle, the gas pushes the double plug to the center in a straight line, and the rack on the piston drives the gear on the rotating shaft to roll 90 degrees clockwise, and the valve is closed. At this moment, the gas in the center of the pneumatic actuator is discharged with the A nozzle. According to the requirements, the pneumatic actuator can be equipped with the opposite transmission principle to the standard type.

The pneumatic actuator is stuck. Disassemble actuator, check for adhesion, dissect and assemble from scratch.

Check whether the pneumatic actuator leaks, valve stem leaks, check whether the sealing sleeve is damaged, if damaged, it needs to be replaced in time. Seal damage leads to leakage, check the piston or see if there are impurities, piston rings and smooth parts can be replaced. There is also the problem of aging disintegration of the coil, so you can use a multimeter to judge after the power is turned on.