BYPASS TURBOSHAFT ENGINE Russian patent published in 2016 - IPC F02C7/06 

FIELD: engines and pumps; cooling system.

SUBSTANCE: invention relates to turboshaft engine cooling system that works with the help of cooling air. Two-rotor turboshaft engine contains supercharging cavity of low pressure compressor bracket, supercharging cavity support of high pressure compressor bracket and supercharging cavity of turbine bracket, which linked via movable seals with the air-gas tract of the engine and with cavities of the oil system, oil-ahead cavities, which linked with aforementioned supercharging cavities and oil-ahead cavities via movable seals and tailpipe burner, which, according to the invention, contain a system of oil-ahead cavity in a low pressure compressor and oil-ahead cavity in a high pressure compressor, which linked via air ducts and connected with oil-ahead cavity of the turbine at the same time, ejector, which contains ejecting and ejected cavities and a mixing chamber, upon that the inlet of ejected cavity is linked with oil-ahead cavity of the turbine, and its outlet is linked with the inlet of the mixing chamber, inlet of the ejecting cavity is linked with power supply, and its outlet is linked with the inlet of the mixing chamber, while outlet of the mixing chamber is linked with input cavity of the tailpipe burner. Secondary zone of a combustion chamber or intermediate stage of high pressure compressor may both serve as power supply.

EFFECT: increasing of source and reliability of movable seals of the oil system, increasing of engine efficiency and reducing of negative effect on the environment.

3 cl, 1 dwg