How does the valve disc of a handwheel high-pressure valve regulate the flow and pressure of fluid?The valve disc of the handwheel high-pressure valve regulates the flow and pressure of the fluid is a delicate and critical process, which involves the position change of the valve disc in the valve body and the shape design of the valve disc itself. This adjustment mechanism not only ensures the stable operation of the industrial fluid manipulation system, but also enables operators to accurately control the flow and pressure of the fluid according to actual needs.
First, when the operator turns the handwheel clockwise or counterclockwise, the valve stem connected to it will rotate in the direction of rotation of the handwheel. The other end of the valve stem is connected to the valve disc, so the position of the valve disc changes as the valve stem rotates. This change in position directly affects the size of the gap between the valve disc and the valve seat, which in turn determines the flow of fluid through the valve.
When the valve is completely closed, the valve disc is tightly attached to the valve seat, forming a sealing barrier. At this time, the fluid cannot pass through the valve and the flow rate is zero. As the operator gradually opens the handwheel, the valve disc begins to gradually leave the valve seat, and the gap between the two gradually increases. This gap becomes a channel for fluid to pass through, and the flow rate of the fluid increases as the gap increases.
In addition to the position change of the valve disc, the shape of the valve disc also plays an important role in regulating the flow. Valve discs of different shapes have different flow regulation characteristics. For example, the design of the conical valve disc makes the area through which the fluid passes when the valve opening is small, thus limiting the increase in flow rate; while when the valve opening is large, the area through which the fluid passes increases rapidly, and the flow rate increases accordingly. rapid increase. This design creates a non-linear relationship between flow and valve opening, which is conducive to more precise flow control.
The spherical valve disc has more uniform flow distribution characteristics. During the change of valve opening, the spherical valve disc can maintain a relatively stable fluid passage area, making the flow rate change more smoothly. This design is very useful in some application scenarios that require stable traffic. In addition, the sealing performance between the valve disc and the valve seat is also a key factor affecting flow and pressure regulation. In order to ensure a good sealing effect, the valve disc and valve seat are usually manufactured with high-precision processing and high-quality materials. At the same time, some high-pressure valves will also use special sealing structures or materials to further improve sealing performance.
During the flow and pressure adjustment process, the operator needs to gradually adjust the rotation angle of the handwheel according to actual needs to find the best valve disc position. At the same time, they also need to pay close attention to the pressure changes of the fluid to ensure that the pressure is always maintained within a safe range. By finely adjusting the position and shape of the valve disc, the handwheel high-pressure valve can achieve precise control of fluid flow and pressure, providing a strong guarantee for the stable operation of industrial fluid control systems.
In general, the valve disc of the handwheel high-pressure valve achieves precise regulation of fluid flow and pressure by adjusting the size and shape of the gap between it and the valve seat. This adjustment method is not only simple and direct, but also highly reliable, making handwheel high-pressure valves widely used in industrial fluid control systems.