TURBO-MACHINE HIGH-PRESSURE TURBINE ROTOR VENTILATION DEVICE Russian patent published in 2008 - IPC F02C7/12 

FIELD: engines and pumps.

SUBSTANCE: ventilation device for the turbo-machine high-pressure rotor incorporates a cooling circuit comprising injectors arranged on the inlet plate inlet side to which the flow of cooling air bled from behind the combustion chamber is fed. The cooling circuit is arranged so that the cooling air flow coming from the injectors passes through the holes made on the inlet plate inlet flange. The latter can be used for attachment on the outlet platec inlet flange. The cooling air flow circulates axially towards the exit between the inlet plate inner hole and outlet plate inlet flange, that can be used for attachment on the inlet high-pressure compressor outlet flange allowing the inlet plate alignment. The ventilation device also incorporates a single labyrinth arranged on one of the turbine plates and between these two plates, the ventilation device dividing cooling flow D into two flows. The first flow circulates between the inlet plate outlet surface and the single labyrinth inlet surface towards the blades. The second flow circulates between the outlet plate inlet surface and the single labyrinth inlet surface towards the blades.

EFFECT: smaller weight, sizes and lower costs along with the rotor longer life.

4 cl, 2 dwg