Turbine blade and gas turbine

Details Turbine blade and gas turbine Turbine blade and gas turbine

2006-02-07

2006-02-07

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

C416S09700R

Reexamination Certificate

active

06994514

ABSTRACT:
Holes38and39have upstream opening portions38band39band downstream opening portions38aand39awhich have a larger cross-sectional area than upstream opening portions38band39b, and are formed at top portion TP of each moving blade. Holes38and39have tapered shapes T1and T2or step portions, and preferably, downstream opening portions38aand39aare eccentrically formed toward the moving direction. When tip squealer37is formed, hole38is formed so that its opening portion is provided at the side surface of tip squealer37. Without covering the holes for cooling which are formed at the top portion of the turbine blade due to rubbing or the like, the turbine blade is accurately cooled and stably driven.

REFERENCES:
patent: 4390320 (1983-06-01), Eiswerth
patent: 4893987 (1990-01-01), Lee et al.
patent: 5192192 (1993-03-01), Ourhaan
patent: 6231307 (2001-05-01), Correia
patent: 6527514 (2003-03-01), Roeloffs
patent: 6602052 (2003-08-01), Liang
patent: 2003/0021684 (2003-01-01), Downs et al.
patent: 207799 (1987-01-01), None
patent: 07-063002 (1995-03-01), None

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