DEVICE FOR CIRCULATING SEALED GAS OF MECHANICAL DRY SEAL OF CENTRIFUGAL COMPRESSOR WHEN CENTRIFUGAL COMPRESSOR STANDS STILL AND IS PRESSURIZED

摘要

PROBLEM TO BE SOLVED: To provide a device capable of operating when a centrifugal compressor stands still and is pressurized to circulate sealed gas of mechanical dry seal of the centrifugal compressor.

SOLUTION: This device 10 for circulating sealed gas of the mechanical dry seal 11 of the centrifugal compressor 13 when the centrifugal compressor 13 stands still and is pressurized is provided with a sealed reciprocating compressor 12 including a piston 14 slidable in a cylinder 16, and the piston 14 is moved by magnetic coupling to an external magnetic element 20 moving along the cylinder 16.

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