THRUST BEARING ASSEMBLY Russian patent published in 2015 - IPC F16C17/04 F16C32/06 

FIELD: machine building.

SUBSTANCE: thrust bearing unit consists of a thrust plate and a thrust journal (7). The thrust plate is composed of housing (1) with cylindrical recess and flat bottom formed by circular ledge (2) along the perimeter of the housing (1). At the bottom of the cylindrical recess there are sectors of the elastic gasket (3) with the gasostatic bearing sectors (5) supported on them, bearings, which are forming, respectively, the elastic gasket ring (3) and the ring from non-magnetic material. The side of sectors (5), facing towards the thrust journal (7), is fitted with a recess with flat bottom formed by beads (8) along the perimeter of the sector (5). In the recess of each sector (5) several sectorial permanent magnets magnetised in an axial direction, and contacting with them sectorial permanent magnets, magnetised in a longitudinal direction are evenly distributed along a circle and fixed. The cross section of cover plates (6) is T-shaped. The external surface of sector permanent magnets form a single plane facing towards the thrust journal (7), made from non-magnetic material, with forming with it of working clearance (12). In volume of sectors (5) the system of interconnected channels of small diameter with a possibility of feeding in it of compressed air from the external source is implemented, the output holes of which are connected with viaholes (20, 21), made in sectorial permanent magnets interconnecting with the working clearance (12).

EFFECT: ensuring of high bearing capacity of a thrust bearing assembly in an operating mode, reliable start of turbine, decrease of deformation of clearance in the thrust bearing assembly as a result of high pressure of gas pressurisation, damping of oscillations of turbine machine rotor, caused by axial gas dynamic forces of the turbine and compressor.

6 cl, 5 dwg