F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/12 (2006.01) F01D 5/08 (2006.01)
Patent
CA 2456589
The invention relates to ventilation device for a high pressure turbine rotor in a turbomachine, the turbine comprising upstream (3) and downstream (5) turbine disks fitted with blades (4, 6), the device comprising a cooling circuit being supplied by a cooling airflow D taken from the back of the combustion chamber. According to the invention, the circuit is such that the airflow passes through orifices (74) formed in an upstream flange (66) of the upstream disk, such that this airflow circulates in the axial direction towards the downstream side between an inner reaming (48) of the upstream disk and a downstream flange (78) of the downstream disk, the device also comprising a labyrinth (80) inserted between the two disks, such that the airflow is divided into a first flow F1 and a second flow F2 circulating on each side of the labyrinth towards the blades (4, 6).
Judet Maurice Guy
Rossi Patrick
Taillant Jean-Claude
Goudreau Gage Dubuc
Snecma
Snecma Moteurs
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