Does the flow rate change after the pressure before and after the pressure relief valve changes?
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Dear friends, after the nitrogen in the nitrogen pipeline passes through a self-acting pressure reducing valve, its pressure drops from 2.5 bar to 10 mbar. Will there be any change in the flow rate?
If the valve opening remains unchanged, the flow rate will not change
Not necessarily. It should consider the pressure changes based on variations in the gas consumption, as well as the changes in conditions caused by fluctuations in the supply from the pressure source. For reference.
Yes, the valve opening remains unchanged. Thank you very much
The pressure source and valve opening are stable; thank you very much for your valuable feedback
Your question is not precise; in simplified terms, changes in flow rate are equivalent to changes in pressure difference. Therefore, the question should focus on whether the flow rate changes when the pressure difference goes from 1 to 2. Your question mentions changes in valve pressure, and without taking complex factors into account, there is only one possible flow rate state – there is no basis for comparison. In a self-acting control valve, the back pressure is set fixedly, and the flow rate varies depending on the pressure of the gas supply; it is these pressure differences that cause changes in flow rate
PCV decompression also creates a pressure difference, right? So the flow rate changes – is this related to the opening degree?