GAS TURBINE ENGINE OIL SYSTEM Russian patent published in 2022 - IPC F02C7/06 F01D25/20 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to circulating oil systems of aviation gas turbine engines and can find application in engine building and other fields of technology. The oil system of the gas turbine engine 1 contains the oil cavities 2 of the rotor supports and the drive boxes of the units, the oil tank 3. The pumping-venting line 4 connects the oil cavities 2 of the rotor supports with the inlet 5 of the vacuum oil ring pump 6, and the outlet 7 of the pump 6 is communicated via a shut-off valve 8 with the oil tank 3. The outlet 9 of the oil ring pump 6 is designed to remove purified air and communicated with the atmosphere. The injection line 10 provides high-pressure oil supply to the oil cavities 2. It is connected by means of a shut-off valve 11 to a submersible pressure pump 12 located inside the oil tank 3 and includes a filter 13 and a fuel oil heat exchanger 14. The oil tank 3 is made in the form of a sealed vessel, the internal volume of which is divided by an elastic metal bellows 15 into an oil cavity 16 and an air cavity 17, and an immersion pressure pump 12 is placed in the oil cavity 16, and the air cavity 17 is communicated with the air path of the compressor 18 of the gas turbine engine 1.

EFFECT: ensuring uninterrupted operation of the oil system of the gas turbine engine is achieved when the aircraft performs evolutions with its variable orientation in the gravitational field and high overloads.

1 cl, 2 dwg