DEVICE FOR COOLING SEALING FLANGES OF TURBINE ROTOR BLADE PLATFORMS Russian patent published in 2017 - IPC F01D25/12 F01D11/10

Abstract RU 2624691 C1

FIELD: engines and pumps.

SUBSTANCE: device for cooling the sealing flanges of the turbine rotor blade platforms contains the cooling air supply tubes located in the outer ring of the nozzle apparatus and having an outlet cutoff along the sealing flanges of the turbine rotor blade platforms. The cooling air supply tubes are located in the outer ring of the nozzle apparatus so that their longitudinal axes are inclined in the direction of the turbine disk rotation at an angle of 25-65 degrees to the section plane of the outer ring of the nozzle apparatus, which is perpendicular to the longitudinal axis of the engine. The distance from the outlet cutoff of the cooling air supply pipes to the sealing flanges of the turbine rotor blade platforms is from 3 to 1 of the inner diameter of the tube.

EFFECT: invention allows to improve cooling and increase the strength of the platforms, the sealing flanges of the turbine rotor blades specifically.

4 dwg

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RU 2 624 691 C1

Authors

Alekseev Ronald Aleksandrovich

Sidorov Andrej Serafimovich

Dates

2017-07-05—Published

2016-05-10—Filed