Precautions when Intelligent Electric Actuators are Equipped with Electric Valves
Remote-control intelligent electric actuators are mostly matched with electric valves and used in automation control systems. There are many types of intelligent electric actuators, and their action modes are different. For example, the rotary electric actuator outputs the angular torque, and the linear electric actuator outputs the displacement thrust. In the application of the system, the types of remote control intelligent electric actuators should be selected according to the work needs of the electric vacuum valve.
The types of electric valves themselves are quite diverse, and the working principles and uses of various electric valves are also different, but in general, valves are controlled by rotating the angle of the disc or lifting the valve plate to control the opening and closing or opening and closing angles. The selection of the remote control intelligent electric actuator is based on the opening and closing method of the electric valve.
- Angular stroke intelligent electric actuator
The angular stroke intelligent electric actuator is used in conjunction with the rotary valve. The output shaft of the angular travel intelligent electric actuator rotates less than one circle, which is 360 degrees. For example, the rotation angle of butterfly valves, ball valves and plug valves is usually less than 90 degrees. The angular travel intelligent electric actuator can be opened and closed by rotating at 90 degrees. process. According to the installation interface mode, the working principle of angular travel intelligent electric actuator is divided into two types: direct-connected remote control intelligent electric device and base crank type remote control intelligent electric device. The output shaft of the direct-connected remote control intelligent electric device is directly connected with the valve stem, while the base crank type remote control intelligent electric device is connected to the valve stem through the crank.
- Multi-turn intelligent electric actuator
The multi-turn intelligent electric actuator is also a remote-control intelligent electric actuator that outputs corner torque. The difference between it and the angular travel intelligent electric actuator is that its output shaft rotates more than 360 degrees. Multi-turn intelligent electric actuators are suitable for rotary valves whose opening and closing process can be completed by multi-turn rotation, such as gate valves and globe valves.
- Straight stroke intelligent electric actuator
The output of the linear intelligent electric actuator is displacement thrust, which is suitable for valve types used for valve lift control, such as single-seat control valves and double-seat control valves.