Conduction-cooled magnetic flux pump

Patent metadata

Field	Value
Publication number	US-12062966-B2
Application number	US-202217820828-A
Country	US
Kind code	B2
Filing date	Aug 18, 2022
Priority date	Jan 19, 2022
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

Disclosed is a conduction-cooled magnetic flux pump, comprising a refrigerator, a cooling capacity conducting part, a cooling capacity conducting plate, a high-temperature superconducting coil, a high-temperature superconducting tape, an L-shaped machined part, a dynamic sealing device, a motor, a rotating shaft, a bow-shaped epoxy resin machined part, a permanent magnet rotor disk, and a permanent magnet. The cooling capacity conducting plate is connected to the refrigerator, the high-temperature superconducting coil is installed on the cooling capacity conducting plate, the high-temperature superconducting tape is fixed to the cooling capacity conducting plate by the L-shaped machined part. An output end of the motor is connected to one end of the rotating shaft through the dynamic sealing device, the other end of the rotating shaft is rotationally connected to the bow-shaped epoxy resin machined part. The permanent magnet rotor disk is installed on the rotating shaft and rotates along with the rotating shaft.

First claim

What is claimed is:

1. A conduction-cooled magnetic flux pump, comprising a refrigerator, a cooling capacity conducting part, a cooling capacity conducting plate, a high-temperature superconducting coil, a high-temperature superconducting tape, an L-shaped machined part, a dynamic sealing device, a motor, a rotating shaft, a bow-shaped epoxy resin machined part, permanent magnet rotor disks, and permanent magnets, wherein the refrigerator comprises a first-stage cold head, the cooling capacity conducting part being connected to the first-stage cold head, the cooling capacity conducting plate being connected to the cooling capacity conducting part, the high-temperature superconducting coil being installed on the cooling capacity conducting plate, and the high-temperature superconducting tape being fixed to the cooling capacity conducting plate by the L-shaped machined part and provided at a certain distance from the permanent magnet rotor disks; a room temperature side shaft and a vacuum side shaft, which are connected and arranged in the dynamic sealing device, an output end of the motor being connected to the room temperature side shaft, one end of the rotating shaft being connected to the vacuum side shaft, and the other end of the rotating shaft being rotationally connected to the bow-shaped epoxy resin machined part; wherein the permanent magnet rotor disk is installed on the rotating shaft and rotates along with the rotating shaft, and the permanent magnets are embedded into the permanent magnet rotor disks.

2. The conduction-cooled magnetic flux pump according to claim 1 , wherein the cooling capacity conducting part is a copper cooling capacity conducting part.

3. The conduction-cooled magnetic flux pump according to claim 1 , wherein the cooling capacity conducting plate is an oxygen-free copper plate.

4. The conduction-cooled magnetic flux pump according to claim 1 , wherein the high-temperature superconducting coil is a high-temperature double-pancake superconducting coil.

5. The conduction-cooled magnetic flux pump according to claim 1 , wherein the high-temperature superconducting tape is SC1270420-7YBCO tape.

6. The conduction-cooled magnetic flux pump according to claim 1 , wherein the output end of the motor is connected to the room temperature side shaft by a plum coupling, and the rotating shaft is connected to the vacuum side shaft by a plum coupling.

7. The conduction-cooled magnetic flux pump according to claim 1 , wherein the rotating shaft comprises a glass fiber shaft having one end connected to the vacuum side shaft by a plum coupling, and a stainless steel shaft having one end connected to the other end of the glass fiber shaft by a plum coupling; the other end of the stainless steel shaft is rotationally connected to the bow-shaped epoxy resin machined part by a bearing, and the permanent magnet rotor disk is fixedly arranged on the stainless steel shaft.

8. The conduction-cooled magnetic flux pump according to claim 1 , further comprising a slotted epoxy resin machined part, wherein one end of the slotted epoxy resin machined part is fixed to the bow-shaped epoxy resin machined part, and the other end of the slotted epoxy resin machined part is in fit connection with the rotating shaft.

9. The conduction-cooled magnetic flux pump according to claim 1 , wherein the number of permanent magnet rotor disks, which are made of a glass fiber material, is three, and the three permanent magnet rotor disks are installed on the rotating shaft at equal intervals and in staggered phases.

10. The conduction-cooled magnetic flux pump according to claim 1 , wherein the permanent magnets are circular SmCo permanent magnets, and a plurality of permanent magnets are provided; the plurality of permanent magnets are radially embedded into the permanent magnet rotor disk, and the magnetic poles at the ends, facing the center of the circle of the permanent magnet rotor disk, of the permanent magnets have the same polarity.

Assignees

• Univ Hunan

Inventors

• Zhai Yujia
• Niu chang
• Mu Chunran
• Weng Tingkun
• Gao Jian
• Huang Shoudao

Classifications

• H01F6/005

  Methods and means for increasing the stored energy in superconductive coils by increments (flux pumps) · CPC title

• H02K3/02

  Windings characterised by the conductor material · CPC title

• H02K1/27

  Rotor cores with permanent magnets · CPC title

• H02K7/003

  Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28) · CPC title

• H02K9/19

  for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil · CPC title