Intelligent electric control valve is a pressure balanced electric intelligent control valve. It is equipped with intelligent electric actuator, which accepts a unified 4-20mA or 1-5V · DC standard signal, converts the current signal into a corresponding linear displacement, and automatically controls the opening of the regulating valve to achieve the pressure of the fluid in the pipeline, Continuous adjustment of process parameters such as flow, temperature, and liquid level.

The intelligent electric control valve has the advantages of compact structure, light weight and small volume. It uses a brushless DC motor as well as a gear box for speed reduction, with high efficiency and low noise. The Hall sensor in the motor is also used to detect the position, which has high control accuracy, long life, and simplifies the mechanical mechanism. The electrical control part adopts modular design, which is composed of driving unit, control unit, liquid crystal display unit and non-invasive touch button unit. It has the advantages of simple operation, convenient debugging and convenient wiring. Torque control and travel limit are realized by electronic circuit, so as to realize the debugging without opening the cover.

What are the characteristics of intelligent electric control valve?
1. Fault judgment, alarm and protection function with off control signal. When the signal is off, the actuator can be turned on. Or off; Or hold; Or any position between 0~100. And with valve stall fault judgment, alarm and protection functions.
2. Adopt top-oriented, single-seat sealing structure. Compared with other similar control valve, it has the advantages of simple structure, large rated flow coefficient and small valve seat leakage. In addition, the TP series with soft sealing structure has both regulating function and cutting function. It is an electric regulating valve with regulating cut-off type and can also be used as a cut-off valve.
3. It is equipped with PSL intelligent direct stroke electric actuator, so the intelligent electric control valve has the advantages of small size, complete specifications, light weight, large thrust, convenient operation, no adjustment potentiometer, high reliability, low noise and so on.
4, the use of-body structure design, with self-diagnosis function, the use and adjustment is very convenient.
5. There is a digital display window, you can see the control signal value, valve position value.

The significance of the characteristics of the three directions of the intelligent electric control valve:

1. Parabolic characteristics
The flow rate varies proportionally to the two sides of the stroke, and generally has the intermediate characteristics of linear and equal percentage characteristics.
From the analysis of the above three characteristics, it can be seen that in terms of its adjustment performance, the equal percentage characteristic is superior, and its adjustment is stable and the adjustment performance is good. The parabolic characteristic is better than the linear characteristic of the adjustment performance, according to the requirements of the use of different occasions, the selection of any one of the flow characteristics. The regulating valve is used to regulate the flow, pressure and liquid level of the medium. According to the signal of the regulating part, the opening of the valve is automatically controlled, so as to achieve the adjustment of the medium flow, pressure and liquid level. The control valve is divided into electric control valve, pneumatic control valve and hydraulic control valve.

2. Equal percentage characteristics (logarithm)
The relative stroke and relative flow rate of the equal percentage characteristic are not in a straight line. The change of flow rate caused by the change of unit stroke at each point of the stroke is proportional to the flow rate at this point, and the percentage of flow rate change is equal. Therefore, its advantage is that when the flow is small, the flow change is small, and when the flow is large, the flow change is large, that is, it has the same adjustment accuracy at different openings.

3. Linear characteristics (linear)
Linear characteristics of the relative stroke and relative flow in a linear relationship. The flow rate change caused by the change of unit stroke is constant. When the flow rate is large, the change of the relative value of the flow rate is small, and when the flow rate is small, the change of the relative value of the flow rate is large.