Precautions when intelligent electric actuators are equipped with electric valves
remote control intelligent electric actuators are mostly equipped with electric valves and are used in automatic control systems. There are many kinds of intelligent electric actuators, which have different action modes. For example, the angle is adjusted, the stroke electric actuator outputs the angular torque, and the straight stroke electric actuator outputs the displacement thrust. Even the people around him don't seem to understand the type of remote-control intelligent electric actuator in the system application, which should be selected according to the working needs of the electric valve. The types of electric valves themselves are quite diverse, and the working principles and uses of various electric valves are also different, but generally speaking, the valves control the opening and closing or switching angle by rotating the disc angle or lifting the valve plate. The selection of remote intelligent electric actuator should be carried out according to the opening and closing mode of electric valve. 1. Angular stroke intelligent electric actuator angular stroke intelligent electric actuator is used together with rotary valve. The output shaft of the angular stroke intelligent electric actuator rotates less than one cycle, that is, 360 degrees for drinking water and plumbing pipes. For example, the rotation angle of butterfly valve, ball valve and plug valve is usually less than 90 degrees. The opening and closing process of the valve can be realized by rotating the angular stroke intelligent electric actuator at 90 degrees. The working principle of angular stroke intelligent electric actuator is divided into two types: direct connected remote control intelligent electric device and base crank remote control intelligent electric device according to the installation interface mode. The output shaft of the direct connected remote control intelligent electric device is directly connected with the valve stem, while Gao Xiaobing, a lithium analyst at di hi tech, believes that the seat crank remote control intelligent electric device is connected with the valve stem through the crank. 2. Multi turn intelligent electric actuator multi turn intelligent electric actuator is also a remote control intelligent electric actuator that outputs angular torque. The difference between it and angular stroke intelligent electric actuator is that its output shaft rotates more than 360 degrees. The multi turn intelligent electric actuator is suitable for rotary valves that can complete the opening and closing process only after multiple turns of rotation, such as gate valves and globe valves. 3. Straight stroke intelligent electric actuator the output of straight stroke intelligent electric actuator is displacement thrust, which is suitable for valve types used for disc lifting control, such as single seat regulating valve and double seat regulating valve
source: maijiefu automatic control equipment (Tianjin) Co., Ltd
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