Breakage of the valve disc in the new hydrogen reciprocating compressor
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Dear experts, I have a new compressor that has been in use for just a few days. During inspection, it was found that the valve disc of the exhaust valve at the third stage outlet was broken. The pressure at the third-stage outlet is 160 kilograms. Nitrogen and hydrogen have been used to try to fix the issue. I would like to ask whether nitrogen can be used with this valve as well What is the maximum pressure that can be achieved in MPa? I would appreciate some guidance from experienced experts.
Is a test air valve installed on the new compressor?
It is best to consult the equipment manufacturer regarding this phenomenon; damage to the valve plates of such compressors is considered normal wear and tear. However, this usage period is unacceptable. As for the volume and pressure of gas atmospheres with different densities, they are primarily calculated based on density theories of the medium as a reference. It is still necessary to confirm with the manufacturer. It is also important to pay special attention to strictly verifying the physical and chemical properties of the medium for which the equipment is intended to be used; for example, gases such as oxygen cannot be used. For reference.
To inject nitrogen, you need to replace the nitrogen valve; it becomes useless after use
There is a nitrogen valve, but nitrogen was also pumped in using a hydrogen valve.
Let me tell you. Not all H2 valves cannot be used for N2, but it is generally not allowed to use them for N2. This is because the lift distance of N2 valves differs from that of H2 valves, and their molecular weights are also different; as a result, the pressure loss across the valves varies significantly. This leads to a pressure difference at both ends of the valve leaflets that does not match the spring characteristics of the valve, which can cause the leaflets to break, and it also results in an increase in the exhaust temperature.
Short-term use is no problem; note that the operating parameters in this case should be based on the exhaust temperature. It is also important to pay attention to the temperature tolerance requirements of the piston rings and support rings
Hydrogen valves cannot be used for nitrogen; at least, they cannot be pressurized to the normal operating pressure required for hydrogen service