Henan SIKE measurement and control limited orifice plate
First, the function of restricted orifice plate:
1. The situation where the process materials need to be reduced.
2. When there is a large pressure drop on the valve in the pipeline and downstream, to reduce the erosion of the fluid to the valve, when the throttle of the orifice is not produced, the valve upstream of the valve can be connected.
3. The fluid needs small flow and continuous flow, such as pump flushing pipe, bypass pipeline of hot standby pump (low flow protection pipeline), analysis of sampling pipe and other places.
4. The pressure should be reduced to reduce noise or wear, such as the air release system.
Second, the principle of restricted orifice plate:
The current-limiting orifice can be used as a flow measuring to measure the flow rate and can also be used as the throttle to limit the flow and reduce the pressure. When the orifice plate has a certain pressure difference, the fluid flows through the orifice, and for a certain aperture, the flow through the orifice increases with the pressure difference. But when the pressure difference exceeds a certain value (referred to as the critical pressure difference), the fluid through the orifice of shrinkage cavity in the velocity to the speed of sound, at this time, no matter how to increase pressure difference, as long as the pressure upstream of the orifice plate keep a certain, flowing through the orifice flow will be maintained at a certain value and no longer increases. The limiting orifice plate is based on this principle to limit fluid flow and reduce pressure.