Understand the working principle and advantages of hydraulic butterfly valve

Understand the working principle and advantages of hydraulic butterfly valve

Hydraulic butterfly valve is a common fluid control valve, mainly used in the control valve of hydraulic system, to achieve the flow, pressure and regulation of the fluid in the pipeline automatic control, is widely used in petroleum, chemical, electric power, water supply and other industries. This paper will introduce the working principle and advantages of the hydraulic butterfly valve.

First, the working principle of the hydraulic butterfly valve

The liquid-controlled butterfly valve is a liquid-controlled valve that uses the control of liquid flow and pressure to control the opening and closing of the valve. The valve body of the hydraulic butterfly valve is usually composed of two metal disks and a sealing rubber ring. When the pressure of the control medium acts on the control device of the valve, the valve begins to move. When the valve is fully open, the oil flows directly and the liquid flows through the pipeline. When the valve is partially open, the flow rate of the liquid passing through the valve decreases, which in turn causes the pressure in the pipe to increase. When the valve is completely closed, the pressure of the liquid in the pipe reaches its maximum. In this state, the liquid flow through the valve will be strictly controlled, so as to achieve the adjustment of flow and pressure.

The control instrument of the hydraulic butterfly valve is a device that controls the opening and closing of the valve, which is usually composed of a hydraulic controller, a positioner, an electric regulator, and a servo valve. In the hydraulic system, the hydraulic butterfly valve is also equipped with a pressure relief device to maintain the balance and stability of the hydraulic pressure in the pipeline.

Two, the advantages of hydraulic butterfly valve

The hydraulic butterfly valve has a number of advantages, including the following aspects:

1. Wide adjustment range: The hydraulic butterfly valve has the characteristics of wide adjustment range and high adjustment accuracy, which can realize the full range of adjustment of the flow and pressure of the fluid in the pipeline.

2. Fast control response: The flow and pressure control response of the hydraulic butterfly valve is fast, and the adjustment of the hydraulic system can be quickly realized.

3. Simple structure: The structure of the hydraulic butterfly valve is relatively simple, easy to install and maintain.

4. Economical and practical: Compared with other valves, hydraulic butterfly valves have low price, long service life and easy maintenance, so they have been widely used.

5. Less pressure loss: The pressure loss of the hydraulic butterfly valve is less, which can reduce the energy consumption during fluid operation.

6. Strong corrosion resistance: The valve material of the liquid-controlled butterfly valve can be selected according to actual needs, and has good corrosion resistance.

In general, the hydraulic butterfly valve is an important control device in the field of fluid control. The hydraulic butterfly valve has a wide range of application prospects and will play a greater role in industrial production.