FLANGE OF ROTOR DISK CARRYING BLADES AND ITS ARRANGEMENT IN GAS-TURBINE ENGINE Russian patent published in 2006 - IPC F01D11/02 

FIELD: mechanical engineering; gas-turbine engines.

SUBSTANCE: flange of rotor disk carrying blades has hub secured on rotor and wall covering one side of disk so that periphery of wall adjoins the disk. Flange is provided with great number of sliding projections of labyrinth seal on side of wall opposite to disk containing sharpened ends axially tilted to rotor. Sharpened ends of sliding projections are displaced in axial and radial directions relative to each other. Wall center of inertia is separated from disk by radius passing through main zone of flange bending. Arrangement of said flange in gas-turbine engine includes section of stator located before wall side pointed from disk. Said section of stator contains additional parts of sliding projections of labyrinth seal. Cold gas charger gets into chamber found between flange and section of stator. Channels to pass cold gas to disk are made in flange.

EFFECT: reduced leaks of cooling gas owing to tilting of flange under action of centrifugal forces created without use of special part.

8 cl, 2 dwg