The reciprocating piston hydrogen circulation compressor passes the airtightness test, but gas leaks from the breather valve on the tank
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After repairing and replacing the piston seals in the reciprocating piston-type cycle hydrogen compressor, the high-pressure (3.0 Mpa) airtightness test passed, and the pressure retention performance was good. However, once the compressor started operating and cycle hydrogen was introduced, hydrogen gas leaked from the breather valve of the crankcase. There are high-pressure and low-pressure compartments between the cylinder and the crankcase; the high-pressure compartment is connected to a flare system, while the low-pressure compartment is connected to an exhaust line to the atmosphere. Neither of these pipelines showed any signs of heating or leakage. So why is hydrogen leaking directly from the breather valve of the crankcase? I wonder if anyone else has encountered this issue – please give me some advice
Could it be due to high backpressure in the torch and atmosphere?
It’s possible that the cylinder packing is leaking heavily, and the leakage cannot be compensated for