Sealing device for a turbomachine bearing chamber

Details Sealing device for a turbomachine bearing chamber Sealing device for a turbomachine bearing chamber

1999-06-18

2000-11-07

Look, Edward K.

Rotary kinetic fluid motors or pumps

With lubricating, sealing, packing or bearing means having...

For shaft sealing, packing, lubricating or bearing means

4151742, 4151745, 415231, F01D 1100

Patent

active

061427292

ABSTRACT:
A sealing device for a turbomachine bearing chamber in which a bearing is mounted between a sleeve secured to a rotary shaft and a casing defining said bearing chamber, said sealing device comprising a labyrinth seal disposed on the sleeve at the junction with an adjacent air chamber, a static carbon ring which is not in contact with the shaft and is retained axially in position in a fixed annular support, and a rotary ring which is driven by the sleeve and which is centred without clamping on the sleeve by means of a ring seal and is retained axially in position by a flat annular spring, the rotary ring having a radial surface which faces and co-operates with a radial surface of the carbon ring and which is formed with lift grooves such that, during operation, a substantially frictionless sealing is effected between the two radial surfaces.

REFERENCES:
patent: 3122374 (1964-02-01), McGahan
patent: 3921986 (1975-11-01), Geary et al.
patent: 4398730 (1983-08-01), Rucker et al.
patent: 4406466 (1983-09-01), Geary, Jr.
patent: 4687346 (1987-08-01), Suciu
patent: 5174584 (1992-12-01), Lahrman
patent: 5593165 (1997-01-01), Murray et al.

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