EP 1132575 A4 20020410 - FILM COOLING HOLE CONSTRUCTION IN GAS TURBINE MOVING-VANES
Title (en)
FILM COOLING HOLE CONSTRUCTION IN GAS TURBINE MOVING-VANES
Title (de)
KONFIGURATION VON FILMKÜHLUNGSBOHRUNGEN IN GASTURBINENSCHAUFELN
Title (fr)
CONFIGURATION A TROUS DE REFROIDISSEMENT POUR PELLICULE D'AIR DANS LES AUBES MOBILES D'UNE TURBINE A GAZ
Publication
Application
Priority
JP 9905047 W 19990916
Abstract (en)
[origin: WO0120133A1] A moving vane (20) is formed with cooling passages (22, 23) partitioned by a rib (51), wherein cooling air (41) flows in through the cooling passage (22) and into the cooling passage (23) as indicated by an arrow (41e). A stagnant region (53) is formed in the corner at the front end of the cooling passage (22) where there is no cooling hole (50); however, a flow (41i) goes out of the vane through a cooling hole (2), so that a flow of cooling air is formed in this region. Further, at the front end of a rib (51) there is formed a peel region (52) due to the peeling of the flow, but the cooling air (41h) flows out of the vane through a cooling hole (1) and a flow of cooling air is produced in this region. Further, a film cooling hole construction is also disclosed wherein in a gas turbine moving-vane having multi-stage turbulators (28) formed on the inner wall surface (60) of the cooling passage, the peeling of the cooling air taking place between the turbulators (28) is eliminated.
IPC 1-7
IPC 8 full level
F01D 5/18 (2006.01)
CPC (source: EP)
F01D 5/188 (2013.01); F05D 2260/201 (2013.01); F05D 2260/202 (2013.01); F05D 2260/221 (2013.01); F05D 2260/22141 (2013.01)
Citation (search report)
- [XY] GB 1350424 A 19740418 - ROLLS ROYCE
- [XY] US 4992026 A 19910212 - OHTOMO FUMIO [JP], et al
- [A] EP 0383046 A1 19900822 - WESTINGHOUSE ELECTRIC CORP [US]
- See references of WO 0120133A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0120133 A1 20010322; WO 0120133 A8 20010726; CA 2347888 A1 20010322; EP 1132575 A1 20010912; EP 1132575 A4 20020410
DOCDB simple family (application)
JP 9905047 W 19990916; CA 2347888 A 19990916; EP 99943365 A 19990916