ELASTO-DAMPER BEARING OF GAS TURBINE ENGINE Russian patent published in 2010 - IPC F02C7/06 

FIELD: engines and pumps.

SUBSTANCE: proposed bearing consists of case accommodating internal elasto-damper bush wherein roller bearing outer race and jet ring are locked by nut. Roller bearing internal ring is fitted on the shaft together with cage and rollers. Front and rear baffles are fitted on the shaft on front and rear sides from the ring. Front baffle taper wall features outer diametre D₁, while rear baffle wall features taper-shape profile with outer diametre D₂. Walls taper parts are directed toward labyrinth seals. Labyrinth seal knife edges are arranged on the walls. Oil chamber is insulated from cooling air by front and rear labyrinth seal knife edges, each consisting of front and rear labyrinths fitted on the shaft and stator front and rear flanges of labyrinths. Front and rear baffle labyrinth seal knife edges are directed toward outer cylindrical surfaces of front and rear labyrinth flanges to form, together with said walls, the front and rear air-oil chamber, each being communicated with oil chamber at the outlet.

EFFECT: higher reliability.

1 dwg