Structure and function of electric valve

Update:12-12-2020
Summary:

With the development of industry, electric valve appear […]

With the development of industry, electric valve appeared later than pneumatic valve, but its application range is wider and wider. Since no air source is needed, it is easy to install and use. As long as the power supply and the control signal are connected, it can work. Let me introduce you the structure and function of the electric valveFRPP Worm Gear Butterfly Valve.

The typical shape of an electric valve is composed of two detachable actuators and a regulating valve (regulating mechanism). The upper part is the actuator, which receives the 0-10madc or 4-20madc signal from the regulator, converts it into the corresponding linear displacement, pushes the lower regulating valve to act, and directly regulates the fluid flow. The actuators of various electric valves are basically the same, but the structure of the regulating valve (regulating mechanism) varies in many types due to different operating conditions. The most commonly used are straight single valve seat and straight double valve seat.

Electric valve is an industrial field executive instrument composed of a regulating valve body and various electric actuators. Receive 4-20mA or pulse signal from the regulator, carry out closed-loop control, realize automatic control of parameters such as flow, pressure, temperature, liquid level. It can also use intelligent electric actuators to realize digital transmission with DCS, PLC and other equipment to form a more intelligent control manufacturing system. There are two power supply voltages for electric control valves: 220 V and 380 V. The flow characteristics of electric valve, electric single-seat control valve and electric small flow control valve are equal percentage, linear and fast.