Packing seal for the piston rod of a reciprocating compressor
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Does the packing not provide any sealing function before the compressor is started? If pressure is applied to the cylinder before the compressor starts, will the packing allow air to leak? Another question: does air leaking through the packing leak directly into the isolation chamber?
If the cylinder is pressurized before the compressor starts, there will be some leakage at the packing, as it is cold at that time. If the leakage from the packing is not significant, it will be released through the vent flare line and will not reach the isolation chamber.
Judging from the model, it generally leaks into the isolation room； If the production medium is toxic and harmful, pipeline venting and isolation measures can be installed.
To start the compressor properly, stamping is necessary; it is one of the steps involved in starting the machine. If the packing is not tight, there are varying degrees of looseness – it might not leak at 1 MPa pressure but leak at 3 MPa pressure
It will still provide a sealing effect even if not activated