OIL SYSTEM OF A GAS TURBINE ENGINE Russian patent published in 2022 - IPC F02C7/06 

FIELD: aircraft engine building.

SUBSTANCE: invention relates to the field of aircraft engine building, namely to the arrangement of the oil system of a gas turbine engine (GTE). The GTE oil system contains oil cavities of support bearings of the fan, compressor and turbine rotors, which communicate with the breather through a system of breather lines. The prompter is made with two impellers mounted on a common drive shaft in housings isolated from each other, each of which is equipped with an individual channel for supplying an air-oil mixture, removing purified air and removing oil trapped from the mixture, wherein, one of the channels for supplying an air-oil mixture is connected with venting lines for the oil cavities of the support bearings of the fan and compressor rotors, and the other channel for supplying the air-oil mixture is connected with the venting line for the oil cavities of the support bearings of the turbine rotor. The oil outlet channels of both impellers are interconnected and connected to the inlet of the extraction pump. The purified air outlet channels of both impellers are interconnected and vented to the surrounding atmosphere.

EFFECT: reduction of oil consumption in gas turbine engines due to the rational organization of the removal of ventilated flows of the air-oil mixture from the oil cavities of the supporting bearings of the fan, compressor and turbine rotors and the separation of vented flows with different pressure values.

3 cl, 2 dwg