COOLING DEVICE FOR REAR BEARING SUPPORTS OF THE GAS TURBINE ENGINE ROTOR (EMBODIMENTS) Russian patent published in 2023 - IPC F02C7/06 

FIELD: turbines.

SUBSTANCE: invention relates to cooled turbines of a gas turbine engine for aviation applications, namely to cooling air supply devices and rear bearing supports of a gas turbine engine (GTE) rotor. A device for cooling the rotor supports of a gas turbine engine comprising an air duct for supplying cooling air rigidly placed on the stator of the gas turbine engine and connected with its inlet to a source of cooling air, and the other outlet with a closed cooled cavity of the rotor, in accordance with the invention, the air duct inlet is connected to a cold atmospheric air receiver installed in front of the compressor, and the air duct outlet is connected to the flow distributor comprising the outlets, which enters the closed cooled cavity through the inlet pipe, while the extreme outlets are installed at a radius of R_EO from the central axis of the engine, defined in the range of R_EOmax, R_EOmin according to special formulas of the variational series. In this case, the central outlet is installed in a position opposite the inner race of the bearing at a distance of radius R_CO from the central axis of the engine, also determined by the formula. Cold atmospheric air at the compressor inlet is taken through a shaped air duct and cooling of the rotor bearings through a distribution pipe with outlets installed directly opposite the cooled elements of the bearing support at a certain distance.

EFFECT: effective cooling occurs and the required temperature of the GTE rotor bearing supports is achieved.

8 cl, 5 dwg