Sealing system for rotors

Details Sealing system for rotors Sealing system for rotors

1978-03-14

1979-07-17

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 74, 277134, 415110, 415172A, 60 3966, F01D 1104, F16J 1540

Patent

active

041613180

ABSTRACT:
Turbine blade shrouds are sealed by injecting air on to the shroud immediately upstream of a shroud seal. This air serves two purposes: it creates a turbulent flow immediately upstream of the shroud seal, thus spoiling and reducing the leakage flow over the seal, and the hot gases which would otherwise leak over the seal are replaced by the cooler air, thus reducing energy wastage and improving S.F.C. (specific fuel consumption).

REFERENCES:
patent: 2685429 (1954-08-01), Auyer
patent: 2963268 (1960-12-01), Smile et al.
patent: 2988325 (1961-06-01), Dawson
patent: 3189320 (1965-06-01), Beldecos et al.
patent: 3239193 (1966-03-01), Kerensky
patent: 3279378 (1966-10-01), Sproule
patent: 3437313 (1969-04-01), Moore
patent: 3756740 (1973-09-01), Deich et al.
patent: 3927951 (1975-12-01), Mitsuhashi

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