HIGH-TEMPERATURE TURBINE ROTOR

摘要

FIELD: machine building.SUBSTANCE: high-temperature turbine rotor comprises disks of the first and second stages between which an intermediate disk with radial protrusions is mounted. The intermediate disk is fixed by radial protrusions in the circumferential direction in relation to the axial protrusions set on the first stage disk body. The axial protrusions on the first stage disk body are made so that to form an U-shaped protrusion in the cross-section. The circumferential rib of the intermediate disk placed on the inner side of the first stage disk rim is provided with grooves. The said grooves serve to connect the air cavities of increased pressure to the annular air cavity of decreased pressure which is limited by the circumferential rib of the intermediate disk, radial protrusions of the intermediate disk, the U-shaped protrusion and the first stage disk body. The relation of the U-shaped protrusion in the axial direction to the depth of the U-shaped protrusion groove accounts for 1.1-2.EFFECT: invention allows for higher reliability and reduced weight of a high-temperature turbine rotor.3 dwg