How do the flow rate, velocity, and pressure change after the pipeline passes through a flow control orifice plate? ?
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After the water in the pipeline passes through the flow control orifice plate, how do 1) flow rate, 2) velocity, and 3) pressure change respectively? ?
It should be that the flow rate decreases, the velocity increases, while the pressure remains unchanged or decreases
If the pressure pump remains in the same state and the flow rate stays constant, the velocity increases while the pressure decreases
It depends on the function. Some orifice plates are designed for pressure reduction, so the pressure certainly decreases; others are used to regulate flow rate, and in that case the flow rate definitely goes down. Usually, when the flow rate is lower, the flow velocity increases
Throttling for pressure reduction, as the name suggests, means that the pressure decreases and the flow rate drops, but the velocity increases.
A orifice plate serves to limit flow and reduce pressure. Limiting the flow does not mean that the flow rate will decrease; rather, it ensures that the flow rate does not exceed a specified value. The pressure certainly decreases, and since the orifice plate generally reduces the cross-sectional area, the flow velocity at the orifice plate increases.
Due to orifice throttling, the fluid flow rate decreases (under the same conditions); the pressure drops, and the flow velocity decreases (although the flow velocity increases at the orifice itself).
Will the flow velocity in the subsequent pipes also increase (if the pipe diameter remains unchanged)?
The flow velocity increases at the orifice plate, and subsequently decreases due to the expansion (compared to the orifice plate diameter).
I have also been wanting to ask about this question. A flow-limiting orifice plate is installed in series before the control valve where flashing occurs; however, there is concern that despite the pressure drop caused by the orifice plate, the valve downstream may not experience flashing, but whether the flow rate will still meet the process requirements. So I would like to ask how to calculate the flow rate after passing through the flow control orifice plate (with the pressures before and after being given)