The electric regulating valve is mainly composed of an electric actuator and a regulating valve body. By receiving signals from the industrial automation control system, it drives the valve to change the cross-sectional area between the valve core and valve seat, control process parameters such as flow rate, temperature, and pressure of the pipeline medium, and achieve remote automatic control. The equal percentage characteristic is optimal, with stable regulation and good regulation performance.

電動調(diào)節(jié)閥結(jié)構(gòu)特點：

Structural characteristics of electric control valve:

1、伺服放大器采用深度動態(tài)負反饋，可提高自動調(diào)節(jié)精度。

1. The servo amplifier adopts deep dynamic negative feedback, which can improve the accuracy of automatic adjustment.

2、電動操作器有多種形式，可適用于4~20mA。DC或0~10mA.DC。

2. Electric operators come in various forms and can be applied to 4-20mA. DC or 0-10mA.DC.

3、可調(diào)節(jié)范圍大，固有可調(diào)比為50，流量特性有直線和等百分比。

3. The adjustable range is large, with an inherent adjustable ratio of 50, and the flow characteristics are linear and equal percentage.

4、電子型電動調(diào)節(jié)閥可直接由電流信號控制閥門開度，無需伺服放大器。

4. The electronic electric regulating valve can be directly controlled by the current signal to control the valve opening, without the need for a servo amplifier.

5、閥體按流體力學(xué)原理設(shè)計的等截面低流阻流道，額定流量系數(shù)增大30%。

5. The valve body is designed according to the principle of fluid mechanics, and the rated flow coefficient increases by 30%.

電動調(diào)節(jié)閥結(jié)構(gòu)分類：

Classification of electric control valve structures:

電動調(diào)節(jié)閥一般可分為單座式和雙座式結(jié)構(gòu)，

Electric control valves can generally be divided into single seat and double seat structures,

電動單座式調(diào)節(jié)閥適用于對泄漏要求嚴(yán)格，閥前后壓差低及有一定粘度和含纖維介質(zhì)的工作場合，電動雙座式調(diào)節(jié)閥具有不平衡力小，允許壓差大，流通能力大等待點，適用于泄漏量要求不嚴(yán)格的場合。

The electric single seat regulating valve is suitable for working occasions with strict leakage requirements, low pressure difference before and after the valve, and certain viscosity and fiber containing media. The electric double seat regulating valve has a small imbalance force, allows a large pressure difference, and a large flow capacity waiting point, making it suitable for occasions with less strict leakage requirements.

電動調(diào)節(jié)閥工作原理：

Working principle of electric control valve:

電動調(diào)節(jié)閥根據(jù)調(diào)節(jié)部位信號，自動控制閥門的開度，從而達到介質(zhì)流量、壓力和液位的調(diào)節(jié)。以更常用的4-20mA電流信號來說，在控制系統(tǒng)給電動調(diào)節(jié)閥的信號為4mA的時候，調(diào)節(jié)閥處于全閉狀態(tài)，而給其20mA信號的時候，調(diào)節(jié)閥處于全開狀態(tài)。4-20mA中間不同的信號數(shù)值對應(yīng)不同的調(diào)節(jié)閥開度，即控制系統(tǒng)在給其12mA信號的時候調(diào)節(jié)閥的開度為50%。根據(jù)自己的工況介質(zhì)選擇適用的流量系數(shù)，就可以算出調(diào)節(jié)閥每個開度所對應(yīng)的流量、壓力。從而達到調(diào)節(jié)閥對工況介質(zhì)的調(diào)節(jié)要求。

The electric regulating valve automatically controls the opening of the valve based on the signal of the regulating part, thereby achieving the regulation of medium flow, pressure, and liquid level. For the most commonly used 4-20mA current signal, when the control system sends a 4mA signal to the electric regulating valve, the regulating valve is in the fully closed state, while when a 20mA signal is given, the regulating valve is in the fully open state. The different signal values between 4-20mA correspond to different valve openings, meaning that the control system adjusts the valve opening to 50% when giving it a 12mA signal. By selecting the appropriate flow coefficient based on one's own operating medium, the flow rate and pressure corresponding to each opening of the regulating valve can be calculated. In order to meet the regulatory requirements of the regulating valve for the working medium.