Gas compressor having dry gas seals

Details Gas compressor having dry gas seals Gas compressor having dry gas seals

1989-09-19

1991-02-19

Kwon, John T.

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

In separate chamber having non-system fluid inlet

415107, 415112, 415118, 4151742, 4151741, 277 93R, F01D 300, F01D 1100

Patent

active

049939173

ABSTRACT:
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 a 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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