DOUBLE-ROTOR GAS TURBINE ENGINE Russian patent published in 2017 - IPC F02C7/06 

FIELD: engines.

SUBSTANCE: invention relates to gas turbine engines, specifically to oil systems, their supercharge cavities and oil breathing devices. Double-rotor gas turbine engine is equipped with system of series-connected to each other by means of additional air ducts pre-oil cavities of low pressure compressor and pre-oil cavity of high-pressure compressor, simultaneously communicated with pre-oil cavity of turbine, ejector comprising ejected cavity, an ejection cavity and mixing chamber, pre-oil cavity of turbine is interconnected on one side, via air duct with breathing valve, and on other side, with inlet of ejected cavity of ejector whose output is connected to input of mixing chamber, wherein ejecting cavity is connected by its inlet to power supply, and by output to input of mixing chamber, mixing chamber outlet is communicated with inlet cavity of afterburner. Also, power supply can be secondary zone of combustion chamber or intermediate stage of high pressure compressor.

EFFECT: technical result of invention is avoiding emissions into atmosphere on long-lasting cruising modes and maintaining optimum differential on movable seals of engine oil system at maximum and afterburner modes of engine operation.

3 cl, 1 dwg