Single-shaft multi-stage centrifugal compressor

Details Single-shaft multi-stage centrifugal compressor Single-shaft multi-stage centrifugal compressor

1987-03-16

1988-02-16

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Axially opposed working fluid paths to or from runner

Pump impeller means

415100, 4151991, 4151992, 415112, F01D 1100, F01D 302

Patent

active

047251964

ABSTRACT:
A single-shaft multi-stage centrifugal compressor has a multiplicity of impellers for compressing a main gas and an impeller for compressing an intermediate suction gas which are carried by the same impeller shaft. The suction pressure of the impeller constituting the final stage for the compression of the main gas is maintained higher than the suction pressure of the impeller for compressing the intermediate suction gas. With this arrangement, a part of the main gas of a pressure slightly higher than the intermediate suction gas is introduced into the shaft seals, and the shaft seals and drainers are protected from any corrosive and toxic components which may be contained by the intermediate suction gas.

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