COOLED HIGH-PRESSURE TURBINE Russian patent published in 2017 - IPC F01D5/08 

FIELD: power industry.

SUBSTANCE: cooled high-pressure turbine comprises a turbine nozzle apparatus with a furling apparatus with its input connected to a cooling air source, and outlet channels connected to vaneless diffuser, a disc with cooled rotor blades, cooling air support channels to rotor blades mounted in the flow part of turbine, wherein furling apparatus output channels are rotated towards the rotation direction of the disk with cooled rotor blades. Wherein the vaneless diffuser is placed on the turbine nozzle and is formed as a channel at the input, connected to the furling apparatus output channel directed radially relative to the rotation axis, and directed towards the cooling air supply channels to the rotor blades at the outlet. Wherein the outlet of the vaneless diffuser is separated from the turbine flow part and circumdisk cavity located between the vaneless diffuser and the disk with cooled rotor blades by moving seals.

EFFECT: invention reduces production and repair cost of both a turbine assembly and the whole engine, and increased TBO.

2 cl, 2 dwg