ELASTIC DAMPING SUPPORT OF GAS-TURBINE ENGINE Russian patent published in 2011 - IPC F02C7/06 

FIELD: engines and pumps.

SUBSTANCE: bearing is installed in inner elastic element in elastic damping support of gas-turbine engine. Above outer surface of inner bearing race there is conical shield on spraying flange. The latter is installed on inner elastic element on air cavity side. Radial spraying channel of flange is connected at the outlet to radial spraying groove. Sealing comb is installed mirror-like to the shield above cylindrical surface of labyrinth. Oil drain channels tangent to outer surface of shield are made in spraying flange. Shield is connected through annular wall of flange to cylindrical wall of flange, which is directed towards air cavity. Ratio of radial gap δ₂ between shield and outer surface of inner bearing race to radial gap δ₁ between comb and cylindrical surface of labyrinth is equal to 1.5…4. Ratio of radial gap δ₃ between flange of labyrinth seal and cylindrical wall of flange is 2…20.

EFFECT: by decreasing the temperature of bearing of support and by reducing the amount of contaminants supplied to working surfaces of bearing the reliability of elastic damping support of gas-turbine engine is improved.

4 dwg