EP 0911488 A1 19990428 - Gas turbine cooled stationary blade
Title (en)
Gas turbine cooled stationary blade
Title (de)
Gekühlte Statorschaufel für Gasturbinen
Title (fr)
Aube de guidage refroidie pour turbines à gaz
Publication
Application
Priority
- JP 9801958 W 19980428
- JP 11384597 A 19970501
Abstract (en)
In a cooled stationary blade assembly for a gas turbine, an interior of a blade and an inner shroud are cooled by steam to eliminate the use of air cooling. Steam passages 33A, 33B, 33C, 33D, 33E and 33F are provided in the stationary blade 30. The cooling steam 39 is introduced from the steam passage 33A on the front edge side through an outer shroud and passes, in order, through the steam passages 33B, 33C, 33D, and 33E to flow into the steam passage 33F at the rear edge side to cool the interior of the blade, and is recovered through the outer shroud from the upper portion of the steam passage 33F. A portion of the steam from the steam passage 33A is introduced into the inner shroud 31, enters to steam passages 20 from a steam introduction passage 22, branches to the right and left through both end portions, and flows out into the steam passage 33F at the rear edge from a steam discharge passage 21. Not only the interior of the blade, but also the interior of the inner shroud 31 is cooled by the steam so that the cooling air is dispensed with. <IMAGE>
IPC 1-7
IPC 8 full level
F01D 5/18 (2006.01); F01D 9/02 (2006.01); F01D 9/04 (2006.01); F02C 7/18 (2006.01)
CPC (source: EP)
F01D 5/187 (2013.01); F01D 9/02 (2013.01); F05D 2240/10 (2013.01); F05D 2240/81 (2013.01); F05D 2260/22141 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0911488 A1 19990428; EP 0911488 A4 20001129; EP 0911488 B1 20040128; CA 2261184 A1 19981112; CA 2261184 C 20020709; DE 69821312 D1 20040304; DE 69821312 T2 20050804; JP 3276305 B2 20020422; JP H10306706 A 19981117; WO 9850684 A1 19981112
DOCDB simple family (application)
EP 98917726 A 19980428; CA 2261184 A 19980428; DE 69821312 T 19980428; JP 11384597 A 19970501; JP 9801958 W 19980428