F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 5/08 (2006.01) F01D 25/12 (2006.01) F02C 7/18 (2006.01)
Patent
CA 2367684
A gas turbine engine (10) having improved high pressure turbine cooling is disclosed. Rel- atively cool intermediate pressure (P2x) air is tapped off from a region of a compressor sec- tion prior to full compression. The cooling air is lead via conduits to the high pressure turbine, where the rotor and finally the blades of the tur- bine are cooled. Additionally the diverted air may be used to seal a rear bearing compartment and cool the main shaft within the engine.
L'invention concerne un moteur à turbine à gaz (10) pourvu d'un refroidissement amélioré de turbine haute pression. On prélève de l'air relativement frais à une pression intermédiaire (P2x) depuis une région d'une partie de compresseur avant d'effectuer la compression totale. L'air de refroidissement est acheminé par des conduites vers la turbine haute pression dans laquelle il refroidit le rotor et, finalement, les ailettes. En outre, l'air dérivé peut être utilisé pour étanchéifier le compartiment arrière pour roulements et refroidir l'arbre principal du moteur.
Bailey Todd D.
Pratt & Whitney Canada Corp.
Pratt & Whitney Canada Corp./pratt & Whitney Canada Cie.
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