OPERATION METHOD OF CONTROLLED GAS MAGNETIC BEARING ASSEMBLY AND BEARING ASSEMBLY Russian patent published in 2015 - IPC F16C32/04 F16C39/06 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely to a controlled gas magnetic bearing assembly and to the method of its operation. The bearing assembly comprises a solenoid, magnets, poles and armatures of electric magnets, a gas bearing shell, holes for porous inserts, a jacket, winding of electric magnets, a chamber to supply gas-film lubrication to the porous inserts, fasteners for gap measuring sensors, a hole to supply gas-film lubrication to the chamber. The solenoid is mounted on a shaft. The magnets are mounted between the holes of the bearing shell. The electromagnets are installed in the support casing longitudinally. The gas bearing shell is built-in in the support. The holes for the porous inserts are set in the gas bearing shell. The jacket embraces the bearing shell. The chamber to supply gas-film lubrication is located between the bearing and the jacket. The fasteners for gap measuring sensors are located at the poles of the electromagnets. The hole to supply gas-film lubrication is located in the jacket. Method of the controlled gas magnetic bearing assembly operation involves the generation of the additional electromagnetic force aimed at the increase of load-carrying capacity of the bearing assembly. The magnetic force is additionally created, it is controlled by the change of current in the electromagnets; the usage of the gap measuring sensors allows for accurately controlled rotation of the shaft in the support and small change of gas layer thickness, and the longitudinal arrangement of the electromagnets allows for the reduction of magnetic friction due to the longitudinal direction of the magnetic flux.

EFFECT: decreased change of the air gap.

2 cl, 1 dwg