Sealing issues with the 4M80 new hydrogen compressor
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After replacing all the packing glands in the 4M80 compressor, the total pressure in the nitrogen main pipe was only 0.6 MPa. One of the branch lines leading to the packing glands had a nitrogen sealing gas pressure of 0.9 MPA after passing through the pressure reducing valve, while another line had a pressure of 0.6 MPA after going through the partition seal and the pressure reducing valve. Currently, an obvious airflow sound can be heard coming from the partition, and the hydrogen detector is giving an alarm. Does this indicate that there is a leak in the replaced packing glands? Is it possible that the leak is occurring and affecting the nitrogen main pipe? Solve doubts
1. If the sealed gas pressure along the line exceeds the pressure in the main pipe, there must be a leak~~~·2. Question: Do your nitrogen branch pipes have check valves after they branch off from the main pipe?
There is no check valve, only a pressure relief valve. . . But after a day, the pressure dropped and things returned to normal. . Is it possible that the friction between the filler and the piston rod serves a sealing purpose as well?
There is a chance~~Keep observing~~~
It is considered normal for hydrogen to leak from the seal within the specified range