Self-reliance type pneumatic control valve daily inspection and maintenance knowledge

Eliminating stress. All kinds of stress due to improper installation or combination. For example, high temperature medium produce thermal stress, installation time is tight. Solid power imbalance caused by stress and so on. Imbalance effect of stress on self-reliance type pneumatic control valve, make the self-reliance type pneumatic control valve stem, leads to a distortion, can not correctly and the seat of the leak, increases variation, etc. Therefore, in the daily maintenance repair work should be performed to eliminate stress. Remove rust and dirt. Regularly check whether there is any rust on self-reliance type pneumatic - valve connection pipe, welding slag, dirt, etc. , should keep clear of in time. Because these dirt will cause self-reliance type pneumatic control valve of the valve core and valve seat wear and tear, affect the normal operation of the self-reliance type pneumatic control valve. Usually, can be equipped with filter screen before self-reliance type pneumatic control valve filter unit, and regular cleaning. Electric pneumatic valve, pneumatic control valve of pneumatic and self-reliance type pneumatic control valve, pneumatic cut-off valve, high pressure pneumatic control valve, pneumatic control valve temperature check self-reliance type pneumatic control valve support. Self-reliance type pneumatic control valve support make self-reliance type pneumatic control valve components in the position of the is not affected by gravity, etc. If support undeserved cause self-reliance type pneumatic control valve stem and valve seat, can't make variation increases, sealing performance degradation. Therefore, we should check the self-reliance type pneumatic control valve support. Clean the air and hydraulic oil, such as the supply of energy waste. Air and hydraulic source is energy source of self-reliance type pneumatic control valve operation. Instrument with compressed air, hydraulic oil contains impurities may clog orifice and pipe, cause of failure. Therefore, regularly check the gas source, hydraulic oil, regular to sewage filtering device is very important. Safe operation of the inspection. For use in explosive dangerous places self-reliance type pneumatic control valve and the related attachment shall check its safety operation, for example, sealing cover are tight, the operation situation of safety barrier, power supply, etc. , ensure self-reliance type to the safe operation of the pneumatic control valve and related accessories. Transportation and storage. Self-reliance type pneumatic - valve during transportation and storage, application of special bracket, prevent loose; Installed on the self-reliance type pneumatic control valve of related accessories, such as the valve positioner, the handwheel agencies should be strong, should prevent and self-reliance type pneumatic control valve feedback connection rod and other components by external injury; The connection interface application plastic sleeve to prevent external things invasion; Self-reliance type pneumatic control valve connectors available supporting flange and blind flange seal, also can use sticky paper sealing, prevent the outside intrusion.