Cooled shaft seal

Details Cooled shaft seal Cooled shaft seal

1989-04-03

1990-11-13

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 96, 277 962, 277235A, 384317, F02F 1100, F16J 1500

Patent

active

049696521

ABSTRACT:
A seal between a gas turbine engine casing and a high speed shaft on the casing includes a stationary seal ring bearing on an outside cylindrical wall of an annular flange of a seal runner rotatable with the shaft. The annular flange has an inside cylindrical wall bathed in oil for conducting away heat generated at the sliding interface between the seal ring and the annular flange. Heat transfer to the oil is improved by coating the inside cylindrical wall of the annular flange with a thin layer of a metal of higher coefficient of thermal conductivity than the seal runner. The coating is preferably an electro-chemical deposit of silver.

REFERENCES:
patent: 1795311 (1931-03-01), Meyer
patent: 2956824 (1960-10-01), Kuchler et al.
patent: 2966375 (1960-12-01), Vegezzi
patent: 2992842 (1981-07-01), Shevchenko et al.
patent: 3784212 (1974-01-01), Doerfling
patent: 3905605 (1975-09-01), Hubner
patent: 4547082 (1985-10-01), Gerretz et al.
patent: 4659282 (1987-04-01), Popp
patent: 4776759 (1988-10-01), Maskell et al.
patent: 4779876 (1988-10-01), Munson
Bolz & Tuve, "CRC Handbook . . . ", (2nd Ed.), p. 117: Misc. Properties of Metals & Alloys.

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