TURBOCHARGER ROTOR Russian patent published in 2023 - IPC F01D5/02 F01D5/06 F01D5/08 

FIELD: turbine construction.

SUBSTANCE: fastening the covering disk of a turbine rotor of a gas turbine engine, used in transport and power engineering. According to the claimed invention, the turbocharger rotor includes compressor and turbine rotors, a main disk of the turbine rotor containing grooves open on the side of the cover disk for supplying cooling air to the base of the working blades located on the main disk, a cover disk forming, together with the main disk, a cavity for supplying cooling air to the working blades at the outlet and installed at the entrance to the cavity by a coflowing spin device, characterized in that the hub of the covering disk contains at least three equally spaced spikes, which are immersed in grooves made at the junction of the compressor and turbine rotors, while the rim of the covering disk rests into the rim of the main disk on one side, and the spikes of the hub of the covering disk rest against the compressor rotor shaft on the other side, creating a tension that ensures the tightness of the cavity for supplying cooling air to the working blades.

EFFECT: eliminating holes in the body of the main disk and ensuring the coaxiality of the main and cover disks in transient modes in order to increase the reliability and service life of the gas turbine engine, as well as improve its manufacturability.

1 cl, 6 dwg