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2022

Working principle of electric regulating valve

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Working principle of electric regulating valve

Working power supply: DC24V, AC220V, AC380V and other voltage levels.

Input control signal: DC4-20MA or DC1-5V. Electric control valve feedback control signal: DC4-20MA (load electric resistance below 500 ohms)

By receiving the signal of the industrial automation control system (such as: 4~20mA), the valve is driven to change the cross-sectional area between the valve core and the valve seat to control the flow, temperature, pressure and other process parameters of the pipeline medium. Realize automatic adjustment function.

The new type of electric control valve actuator contains feeding function, which accepts a unified standard signal of 4-20mA or 1-5V·DC, converts the current signal into a corresponding linear displacement, and automatically controls the opening of the control valve, so as to meet the requirements of the pipeline. Continuous adjustment of process parameters such as pressure, flow, temperature and liquid level of the internal fluid.

Flow characteristics of electric control valve

The flow characteristic of the electric control valve is the relationship between the relative flow of the medium flowing through the electric control valve and its opening under the condition that the pressure difference between the two ends of the valve remains constant.

The flow characteristics of the electric regulating valve are: linear characteristics, equal percentage characteristics and parabolic characteristics.