Balance piston and seal arrangement

Details Balance piston and seal arrangement Balance piston and seal arrangement

1989-09-25

1991-03-05

Look, Edward K.

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

In separate chamber having non-system fluid inlet

415111, 41742311, F01D 300

Patent

active

049973401

ABSTRACT:
A labyrinth seal is provided to isolate the transmission from a balance piston of a centrifugal compressor, the labyrinth seal being pressurized with refrigerant vapor from the motor chamber, which vapor is at a pressure slightly above that in the transmission, to thereby minimize the efficiency losses that would otherwise occur from leakage of the vapor into the transmission and to the compressor suction.

REFERENCES:
patent: 1499056 (1924-06-01), Hollander
patent: 1910811 (1933-05-01), Peterson
patent: 2799227 (1957-07-01), Allen
patent: 2973135 (1961-02-01), Greenwald
patent: 3895689 (1975-07-01), Swearingen
patent: 3933416 (1976-01-01), Donelian
patent: 3976390 (1976-08-01), Silvern et al.
patent: 4472107 (1984-09-01), Chang et al.
patent: 4614482 (1986-09-01), Gaffal
patent: 4688989 (1987-08-01), Kondo et al.
patent: 4884942 (1989-12-01), Pennink

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