FREE TURBINE SHAFT COOLING DEVICE OF GAS-TURBINE PLANT Russian patent published in 2019 - IPC F01D5/08 F02C7/12 F01D25/12 

FIELD: engines.

SUBSTANCE: invention relates to miniature gas-turbine engines of ground application, made on the basis of turbo-compressor from ICE, and allows simplifying design of cooling of shaft of free turbine. Proposed cooling device of free shaft of gas turbine plant turbine, comprising housing with guide vanes and turbine with shaft, is equipped with cooler made of materials with high heat emission, which is tightly fixed on shaft of generator with bearing supports, wherein the turbine rotating from the gas flow of the gas turbine engine and driving the shaft of the generator, at the end of which it is fixed, heats the shaft, transmitting heat to the cooler, which dissipates it into the atmosphere and thereby protects the bearing supports of the generator from overheating.

EFFECT: as a result of using the proposed invention, it becomes possible to simplify the design and to increase the cooling efficiency by installing on the shaft, between the turbine and the bearing supports of the generator, the rotating cooler.

1 cl, 3 dwg