Gas compressor having dry gas seals for balancing end thrust

Details Gas compressor having dry gas seals for balancing end thrust Gas compressor having dry gas seals for balancing end thrust

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Patent

CA 1326476

ABSTRACT OF THE DISCLOSURE A gas compressor, particularly of the kind for boosting pressure in gas transmission lines, has an impeller mounted on a shaft located between two bearings with the gas space surrounding the impeller being separated from the bearings by dry gas seals, including at least primary dry gas seals. The primary dry gas seal adjacent the discharge end of the compressor is of larger diameter than the corresponding seal at the inlet end of the compressor so that pressurized gas acting on the respective rotary parts of the dry gas seals urges the shaft towards the discharge end of the compressor and thus counteracts dynamic forces on the impeller.

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