MAGNETIC BEARING ASSEMBLY Russian patent published in 2015 - IPC F16C32/04 F16C39/06 

FIELD: machine building.

SUBSTANCE: magnetic bearing assembly contains casing (1), in which magnetic thrust and radial bearings are installed. Rotation axis of the rotor (7) is oriented vertically. Thrust bearing block is installed under thrust journal (8), at that the journal (8) contains cylindrical groove (12), on its bottom the composite permanent magnet (3) is installed, as minimum it contains three ring coaxial permanent magnets, odd magnets starting from the outermost are magnetised radially and look each other by like poles, and even magnets are made with axial magnetising. The ring permanent magnet (2) secured in the casing (1) is made similarly. The rotor top part (7) projecting above the journal (8) has the sleeve shape (6), and central part of the cover (5) is equipped with cylindrical projection (13) made with the possibility of insertion in the cavity of the rotor top part (7). On the internal surface of the sleeve (6) minimum three ring permanent magnets (9) of the radial bearing are rigidly secured above each other. On the surface of the cylindrical projection (13) of the cover (5) looking on the cavity surface of the rotor top part (7) minimum three ring permanent magnets (11) of the radial bearing are rigidly secured above each other, in terms of dimensions and direction of intensity of magnetisation are similar to those of the secured on the internal surface of the sleeve (6), but shifted relatively to them through vertical. The external surface of the sleeve (6) and cylindrical edge of the journal (8) are provided with bandage (14, 15) made by coiled high strength fibres on the binding agent out of solidified synthetic resin. The journal (8) and rotor (7) are hollow and are mainly equipped with the radial reinforcement ribs (16, 17).

EFFECT: assurance of high carrying capacity of thrust and radial bearing assemblies under operation mode with reduced friction losses, improved operation reliability, improvement of mechanical efficiency of the turbine generator.

2 cl, 4 dwg