The new hydrogen check valve is making noise
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The check valve in the hydrogen pipeline at the inlet of the new hydrogen reciprocating compressor is making noise; there is no change in the gas flow rate under normal operating conditions, and the noise persists even when the flow rate is increased. The noise disappears automatically after 16 hours. The hydrogen pressure fluctuates between 1.112 and 1.118 MPa, and such fluctuations occur continuously. The reason for the intermittent noise is related to the fluctuations in the hydrogen supplied by the PSA system
It might be a malfunction of the check valve; take it off and check it
One possibility is that the check valve is damaged; another possibility is that there are fluctuations in the opening degree of the compressor return valve, which causes changes in the pressure at the compressor inlet and thus changes in the pressure difference across the check valve, resulting in noise.
One possibility is that the check valve is damaged; another possibility is that the flow rate is low, causing the check valve to remain in an on/off state and thus generating noise.
There are two possibilities: first, changes in flow rate cause the check valve to not be in a fully open position, resulting in noise between the valve disc and the valve seat； The second issue is a fault with the check valve itself; it is recommended to remove it and inspect it. The check valve in the new hydrogen compressor is very important, as a fault in this valve can lead to pressure leakage, so this matter needs to be taken seriously!