NON-CONTACT SUPERCONDUCTIVE MAGNETIC BEARING Russian patent published in 2023 - IPC F16C33/00 H10N60/00 H01F6/06 

FIELD: electrical engineering.

SUBSTANCE: invention is related to the field of non-contact magnetic bearings using high-temperature superconducting (HTSC) tapes of the second generation, and can be used in the design of electrical devices for various purposes with a massive rotating rotor/shaft with non-contact transmission of torque to a stationary object. Non-contact superconducting magnetic bearing consists of a stator in form of a hollow tube made of non-magnetic material, on the outer surface of which superconducting windings are wound, a cooling system for HTSC tapes and a rotor made of non-magnetic material, with the symmetry axes of the rotor and stator coinciding. The rotor and stator are placed in the housing. On one of the edges of the stator, on its outer surface around the pipe, there is the first cylindrical holder with an axis of symmetry coinciding with the stator, with identical permanent magnets placed close to each other in it, forming rows along the axis of symmetry of the stator, and the number of rows is at least 4. The magnets in the central rows of the holder have the same direction of magnetization along the radial direction perpendicular to the axis of symmetry, and the magnets in the outer rows have the direction of magnetization opposite to the central magnets. Behind the holder there are two superconducting windings made of second-generation HTSC tapes. The length of each winding is equal to the distance from the magnet holders to the winding and the distance between the windings. At least one of the windings has right helical symmetry, the other winding has left helical symmetry. Each of these two windings is a two-part spiral consisting of two identical second-generation HTSC tapes running side by side close to each other. Behind the windings on the outer surface of the stator at a distance equal to the distance between the windings, there is a second holder identical to the first one with permanent magnets placed in it. Inside the stator there is a cylindrical rotor in the form of a rod, on the outer surface of which 4 superconducting windings are wound. Moreover, 2 windings are located opposite the stator windings and are completely identical to them, and the other two windings are located opposite the permanent magnet holders. Each of these windings consists of more than one HTSC tape, the width of which is no more than the width of one of the permanent magnets. An external source of rotation is located on one of the ends of the rotor.

EFFECT: providing the possibility of moving the position of the rotor along the stator during operation of the device for non-contact transmission of torque to a stationary object, as well as the possibility of non-contact braking of the device without stopping it.

1 cl, 4 dwg