Definition, purpose and operating principle of electric valve

Definition, purpose and operating principle of electric valve

       First, the electric valve is simply to control the valve with an electric actuator to realize the opening and closing of the valve. It can be divided into two parts, the upper part is the electric actuator, and the lower part is the valve.

    There are two types of electric valves, one is the quarter-stroke electric valve: the quarter-stroke electric actuator is used in conjunction with the quarter-stroke valve to realize the internal rotation of the valve within 90 degrees to control the flow of the pipeline; the other is the straight-stroke electric valve Valve: The linear electric actuator is used in conjunction with the linear valve to realize the up and down movement of the valve plate to control the flow of the pipeline. It is usually used in conjunction with equipment with a higher degree of automation.

    　Second, the principle of electric valve operation　The electric valve is usually connected by an electric actuator and the valve, and becomes an electric valve after installation and debugging. The electric valve uses electric energy as power to switch on the electric actuator to drive the valve to realize the on-off and regulating action of the valve. So as to achieve the purpose of switching or adjusting the pipeline medium.

      Solenoid valve is a type of electric valve; it uses the magnetic field generated by the solenoid coil to pull the valve core, thereby changing the on and off of the valve body, the coil is de-energized, and the valve core retreats by the pressure of the spring.

　　Three, the use of electric valve: 　　Electric valve: It is used for the analog quantity adjustment of the pipeline medium flow of liquid, gas and wind system, which is AI control. In the control of large valves and wind systems, electric valves can also be used for two-position switch control.

　　 Electric valve: It can have AI feedback signal and can be controlled by DO or AO. It is more common in large pipelines and air valves.

　　 1. Switch form:

　　The electric valve is generally driven by a motor. It takes a certain amount of time to complete the opening or closing action, which can be adjusted.

　　 2. Nature of work:

　　The electric valve is generally driven by a motor, which is relatively resistant to voltage shock. Solenoid valves are fast-opening and fast-closing. They are generally used in places with small flow and low pressure, and electric valves are the opposite of where high switching frequency is required. The opening degree of the electric valve valve can be controlled, and the state is open, closed, half-open and half-closed, which can control the flow of the medium in the pipeline, but the solenoid valve cannot meet this requirement.

　　3. Applicable process:

　　 Electric valves are generally used for regulation, but also have switching values, such as the end of a fan coil.

    This article is original by gas solenoid valve, please indicate http://www.sungofluid.com/