Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means
Patent
1983-10-19
1985-06-18
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
416193A, 416221, F01D 508, F01D 530
Patent
active
045238901
ABSTRACT:
An end seal for root manifolds at the bases of air cooled turbine blades disposed in retention slots in a turbine wheel; the end seal including an annular groove in the upstream face of the wheel having an outboard cylindrical edge outboard of the root manifold, an inboard cylindrical edge inboard of the retention slots and a slot face parallel to the upstream face of the wheel; an imperforate seal ring in the annular groove with a right circular flange adjacent the outboard edge, an annular foot engaging the groove slot face inboard of the retention slots, and a body portion defining an accordion fold in transverse cross section; and seal plate segments on the wheel over the groove. The seal plate segments capture the seal ring and bias the foot against the wheel while centrifugal forces are developed during wheel rotation to thrust the cylindrical flange against the groove outboard edge for outboard sealing and to urge the accordion fold to a folded condition for more tightly thrusting the foot against the groove slot face for inboard sealing.
REFERENCES:
patent: 3490852 (1970-01-01), Carlstrom et al.
patent: 3572966 (1971-03-01), Borden et al.
patent: 3689177 (1972-09-01), Klassen
patent: 3853425 (1974-12-01), Scalzo et al.
patent: 3957393 (1976-05-01), Bandurick
patent: 4021138 (1976-05-01), Scalzo et al.
Bradley A. M.
Garrett Robert E.
General Motors Corporation
Schwartz Saul
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