Title:
GAS TURBINE MOVING BLADE
Document Type and Number:
Japanese Patent JP2984583
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the rigidity of a cavity section and the cooling efficiency of a hub section by providing the cavity in the hub section of a moving blade and the inside of a blade root section, feeding cooling air into it, protruding pin fins on the inner wall of the cavity, or integrally forming pillar-like fins connected with both ends to the opposite inner walls.
SOLUTION: A long and thin moving blade 1 is provided with a cavity 4 having core support ribs 14 in the hub section 18 of a blade 12 up to 25% of the blade axial length toward a blade end 16 from a blade root section 19 and a hub 11, and multiple holes 15 aligned in the axial length direction of the blade 12 are bored in the cavity 4 from the outer periphery section to the blade end 16 to feed cooling air. Many pin fins 5 protruded from the inner wall are integrally formed in the aligned state in the blade axial direction of the cavity 4. The rigidity of the thin hub section 18 can be increased, the cooling efficiency of the hub section 18 can be improved, and the setting of a core can be facilitated when the moving blade 1 is manufactured.
Inventors:
TOMITA YASUOKI
TOMUSEN RAASU
TOMUSEN RAASU
Application Number:
JP21058695A
Publication Date:
November 29, 1999
Filing Date:
August 18, 1995
Export Citation:
Assignee:
MITSUBISHI JUKOGYO KK
International Classes:
F01D5/18; F02C7/18; (IPC1-7): F01D5/18; F02C7/18
Domestic Patent References:
| JP3902A | ||||
| JP7189603A | ||||
| JP2131001U |
Attorney, Agent or Firm:
Ishikawa Arata