Gas turbine blade with cooled platform

Details Gas turbine blade with cooled platform Gas turbine blade with cooled platform

1996-02-26

1997-06-17

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

416 96R, F01D 508

Patent

active

056392168

ABSTRACT:
A turbine blade has a cooling air flow path specifically directed toward cooling the platform portion of the blade root. Two cooling air passages are formed in the blade root platform just below its upper surface. Each passage extends radially outward from an inlet that receives a flow of cooling air and then extend axially along almost the entire length of the platform. Each passage also has an outlet formed in the downstream face of the platform that allows the cooling air to exit the platform and enter the hot gas flow path. The passages are formed in portions of the platform that overhang the shank portion of root.

REFERENCES:
patent: 3853425 (1974-12-01), Scalzo et al.
patent: 4573866 (1986-03-01), Sandy, Jr. et al.
patent: 4702670 (1987-10-01), Winter
patent: 4726735 (1988-02-01), Field et al.
patent: 4893983 (1990-01-01), McGreehan
patent: 5003773 (1991-04-01), Beckwith
patent: 5197852 (1993-03-01), Walker et al.
patent: 5344283 (1994-09-01), Magowan et al.
patent: 5413458 (1995-05-01), Calderbank
Patent Abstracts of Japan, vol. 013, No. 258 (M-838), Jun. 1989 & JP,A,01063605 (Hitachi Ltd) Mar. 1989.

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