Why does the vent valve draw air into the system?
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During an air separation unit commissioning, the blowdown valve for the backflow drew air into the system, while both the top condenser and dryer that were directly connected to it had pressure. I don’t know why this phenomenon occurs. The relief valve has internal leakage, but it’s supposed to only release air; could it be due to too high a flow rate? I’d like to ask everyone for some advice; thanks
Is there a blockage in the pipeline? Discharging a large amount of liquid can cause suction.
The pipeline medium is gas, and with sufficient backflow in the dryer, blockage is unlikely. Moreover, the system pressure continued to rise even after I closed the intake valve. Finally, I opened all the blow-off valves, and then the pressure dropped.
Is it possible that it’s the Venturi effect?