F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 25/12 (2006.01) F01D 5/18 (2006.01) F01D 11/00 (2006.01)
Patent
CA 2242650
A gas turbine moving blade steam cooling system is disclosed wherein leakage of steam for cooling a moving blade is prevented and thermal stress at a blade root end portion is mitigated. Each end portion of a blade root portion 3 of a moving blade 1 is projected to form a projection portion 4a, 4b. A steam passage 5 is provided between the projection portions 4a, 4b and a steam supply port 5a and a steam recovery port 5b are provided downwardly to the steam passage 5. The steam supply port 5a connects to a steam supply passage 20 and the steam recovery port 5b connects to a steam recovery passage 21. Steam is supplied from the steam supply port 5a into a blade interior and is recovered through the steam recovery port 5b. Side surface seal plates 6, 7 and 8 are provided for a secure prevention of steam leakage. The steam cools the moving blade 1 and can be recovered without leakage and stress concentration due to heat at the projection portions 4a, 4b of the blade root end portion is mitigated.
Aoki Sunao
Chikami Rintaro
Fukuno Hiroki
Hashimoto Yukihiro
Hirokawa Kazuharu
Mitsubishi Heavy Industries Ltd.
Riches Mckenzie & Herbert Llp
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