Mining Ball Valves Company Introduces The Use Of Ball Valves
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Mining Ball Valves Company introduces the use of hydraulic high pressure ball valve why does it vibrate?
The ball valve uses a handle or related driving device to apply a certain torque to the upper end of the valve stem, so that the ball rotates 90 degrees to complete the fully open or fully closed action.
When the ball valve is opened or closed, the ball rotates with the valve stem. The opening of the ball valve is a process of gradually increasing or decreasing. Therefore, the valve body flow channel of the ball valve is a constricted section when it is opened and closed. During the opening and closing process of the ball valve, as the opening degree increases or decreases, when the fluid flows through the valve, a certain pressure difference is generated on both sides of the valve, and the size of the pressure difference changes with the change of the opening degree.
Based on the principle of conservation of energy, as the fluid approaches the valve, in order for the fluid to pass through the valve, the velocity of the fluid increases. Instead, there is a corresponding decrease in pressure, which is inversely proportional to velocity.
When the upstream flow rate of the ball valve is constant, the flow rate increases with the increase of the pressure difference. Flow velocity and pressure occur downstream of the narrow neck (ie, the constriction). When the ball valve is opened and closed, the fluid flowing through the valve is equivalent to flowing through the contraction section. The contraction section is not in the contraction section, but a distance downstream of the contraction section, which changes with the pressure. The flow velocity of the contraction section, the flow area of the logistics layer, and the fluid pressure.
During the opening and closing operation of the high-pressure ball valve, especially in the early and late stages of opening and closing, there is a large pressure difference on both sides of the valve due to the small opening of the valve. Large pressure differentials bring high flow rates to the fluid. Turbulence, flashing, and cavitation occur in the fluid as it passes through the valve at high velocity. and many more.
During the liquid operation, when the high-pressure fluid passes through the valve in the form of turbulent flow, due to the influence of obstacles such as valve flaps, valve plates or other closing elements, pressure fluctuations will occur, causing the valve to vibrate.
Through the above introduction, High Pressure Floating Ball Valves Company hopes that you can simply refer to the content of this article in future use.