Daily maintenance and management of electric valves


Published:

2022-12-09

The electric valve uses electrical energy as power to connect the electric actuator to drive the valve, achieving the opening and closing and regulating actions of the valve. To achieve the purpose of switching or regulating the pipeline medium. Electromagnetic valve is a type of electric valve; It uses the magnetic field generated by the electromagnetic coil to pull the valve core, thereby changing the on-off of the valve body. When the coil is powered off, the valve core relies on the pressure of the spring to retract.

Electric valves are usually connected by electric actuators and valves, and become electric valves after installation and debugging.
The electric valve uses electrical energy as power to connect the electric actuator to drive the valve, achieving the opening and closing and regulating actions of the valve. To achieve the purpose of switching or regulating the pipeline medium. Electromagnetic valve is a type of electric valve; It uses the magnetic field generated by the electromagnetic coil to pull the valve core, thereby changing the on-off of the valve body. When the coil is powered off, the valve core relies on the pressure of the spring to retract.
1. Electric valves should be stored in a dry and ventilated room, and the two ends of the passage must be blocked.
2. Electric valves that have been stored for a long time should be inspected regularly, dirt should be removed, and anti rust oil should be applied to the machined surface.
3. After installation, regular inspections should be carried out, mainly including:
(1) The wear of the sealing surface.
(2) Wear of trapezoidal threads on the valve stem and valve stem nut.
(3) Check if the filler is outdated and ineffective, and replace it in a timely manner if it is damaged.
(4) After the maintenance and assembly of electric valves, sealing performance tests should be conducted.
All types of electric valves in operation should be complete and intact. The bolts on the flange and bracket are indispensable, and the threads should be intact without looseness. The fastening nuts on the handwheel should be tightened in a timely manner if they are found loose to avoid wear on the connection or loss of the handwheel and nameplate. If the handwheel is lost, it is not allowed to use a monkey wrench to replace it, and it should be prepared in a timely manner. The packing gland should not be tilted or have no pre tightening clearance. For electric valves in environments prone to contamination by rain, snow, dust, sandstorms, and other pollutants, protective covers should be installed on their valve stems. The scale on the electric valve should be kept complete, accurate, and clear. The lead seals, caps, pneumatic accessories, etc. of electric valves should be complete and intact. The insulation jacket should have no dents or cracks. It is not allowed to knock, stand or support heavy objects on the operating electric valve; Especially non-metallic electric valves and cast iron electric valves should be prohibited.