Thermally responsive labyrinth seal

Details Thermally responsive labyrinth seal Thermally responsive labyrinth seal

1984-04-27

1985-04-30

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 53, 277 74, 277 75, 415174, 415180, F16J 1544

Patent

active

045139750

ABSTRACT:
An improved rotary labyrinth seal such as may be used in a gas turbine engine. The seal includes a rotor with at least one seal tooth and a stator with an abradable shroud and casing. The first and second members cooperate to inhibit the flow of fluid therebetween. The improvement comprises a conduit for conducting a portion of the fluid through the casing for heat transfer between the fluid and second member. In this manner, the thermal response of the stator is improved.

REFERENCES:
patent: 2159766 (1939-05-01), Larrecq
patent: 3527053 (1970-09-01), Horn
patent: 3823950 (1974-07-01), Pedersen
patent: 3825364 (1974-07-01), Halila et al.
patent: 3846899 (1974-11-01), Gross
patent: 4222706 (1980-09-01), Ayache et al.
patent: 4320903 (1982-03-01), Ayache et al.

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