Compressor dry gas seal damage
The structure of the compressor dry gas seal can be divided into a single-end dry gas seal, a double-end dry gas seal and a tandem dry gas seal according to the different medium to be sealed, the medium pressure and the working speed. The single-end arrangement is suitable for a small amount of process gas leakage to the atmosphere without hazard, such as carbon dioxide machine, air compressor, nitrogen compressor, etc.; double-face arrangement is suitable for not allowing process gas to leak into the atmosphere, but allowing nitrogen to enter the unit The working conditions, such as the process gas is dirty, unstable or there is danger of negative pressure; the series arrangement is suitable for the conditions that allow a small amount of process gas to leak to the atmosphere, using two-stage series arrangement, one-stage main seal, two The grade is an alternate seal.
Under normal conditions, the first stage seal bears all or most of the load, while the other stage does not withstand or withstand a small part of the pressure drop. The process gas leaking through the main seal is directed to the flare for combustion, and the remaining part of the process gas passes. The secondary seal is introduced into the safety zone for venting. When the primary seal fails, the secondary seal can act as an auxiliary safety.
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