Seal plate for a gas turbine moving blade

Details Seal plate for a gas turbine moving blade Seal plate for a gas turbine moving blade

1998-03-11

2000-07-11

Verdier, Christopher

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416248, 277634, 277643, 277650, F01D 522, F01D 1100

Patent

active

060863293

ABSTRACT:
A seal plate at the platform portion of a gas turbine moving blade. The seal plate is inserted in a gap between the adjacent platforms at each end portion of a seal pin to prevent air from leaking to the outside. A groove is provided at each of four corners of the end portion of platform of the moving blade, and the seal plate is inserted to cover the gap so as to extend the end portions of the adjacent platforms, by which the gap between the platforms is blocked. A seal pin and end seal pins are inserted between the platforms to seal this portion. However, there is a gap at the end portions, so that cooling air leaks from the lower part of platform. Since the seal plate is inserted in the groove to block the gap, the sealing property is increased.

REFERENCES:
patent: 1825239 (1931-09-01), Meyer
patent: 2912223 (1959-11-01), Hull, Jr.
patent: 3551068 (1970-12-01), Scalzo et al.
patent: 3728041 (1973-04-01), Bertelson
patent: 3801220 (1974-04-01), Beckershoff
patent: 4336943 (1982-06-01), Chaplin
patent: 5338152 (1994-08-01), Feldmann
patent: 5865600 (1999-02-01), Mori et al.

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