CENTRAL DRIVE WITH FRONT SUPPORT OF HIGH PRESSURE COMPRESSOR OF GAS TURBINE ENGINE Russian patent published in 2024 - IPC F02C7/06 F01D25/18 

FIELD: gas turbine engines for aviation and ground use.

SUBSTANCE: invention relates to the design of a central drive with a front support for the GTE compressor rotor. The central drive of a gas turbine engine is an assembly module comprising a central drive housing with a pair of bevel gears installed in it located on their rolling bearings. An angular contact ball bearing is installed on the drive bevel gear located on the HPC rotor, the outer ring of which is connected to the central drive housing through an elastic-damper support attached on one side to the outer race of the angular contact ball bearing, and on the other side to central drive housing. Between the outer race of the HPC angular contact ball bearing and the bushing, a damping cavity is formed with the help of sealing elements, into which oil flows under pressure through the oil channel. Since the damping cavity is a practically non-consumable volume, a constant high pressure is maintained in this cavity. When the HPC rotor oscillates, a pressure pulsation occurs in the damping cavity, the influence of which spreads throughout the entire oil channel. But this pulsation does not affect the oil supply line to the bearings and gearing, since a last-chance filter is installed between these lines, which prevents pressure pulsations occurring in the oil supply line and, accordingly, reduces the influence of this pressure fluctuation on deviations in oil flow A. Thus, the amount of oil entering the bearing gaps, including gap B and gear lubrication, will be as much as necessary for their lubrication and cooling.

EFFECT: improved capabilities.

1 cl, 3 dwg