Superconducting coil and superconducting device

Patent metadata

Field	Value
Publication number	US-11424060-B2
Application number	US-201916557126-A
Country	US
Kind code	B2
Filing date	Aug 30, 2019
Priority date	Mar 15, 2019
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

A superconducting coil of an embodiment includes a winding frame; a superconducting wire wound around the winding frame, the superconducting wire including a first region and a second region facing the first region; and a first layer placed between the first region and the second region, the first layer including a first particle and a thermosetting resin, the first particle including crystal having volume resistivity equal to or higher than 10 −2 Ω·m and having cleavage, and the thermosetting resin surrounding the first particle.

First claim

What is claimed is:

1. A superconducting coil comprising:
a winding frame;
a superconducting wire wound around the winding frame, the superconducting wire including a first region and a second region facing the first region; and
a first layer placed between the first region and the second region, the first layer including a first particle and a thermosetting resin, the first particle including crystal having volume resistivity equal to or higher than 10 −2 Ω·m and having cleavage, and the thermosetting resin surrounding the first particle.

2. The superconducting coil according to claim 1 , wherein the crystal is at least one of a phyllosilicate mineral and a hexagonal boron nitride.

3. The superconducting coil according to claim 1 , wherein the thermosetting resin includes at least one kind of resin selected from a group consisting of an epoxy resin, a phenolic resin, an unsaturated polyester resin, a silicone resin, a urethane resin, a urea resin, a polyimide resin, and a melamine resin.

4. The superconducting coil according to claim 1 , wherein the first layer further includes a second particle having a smaller thermal expansion coefficient than the first particle.

5. The superconducting coil according to claim 1 , wherein the first layer further includes a second particle having a shape different from a shape of the first particle or a particle size different from a particle size of the first particle.

6. The superconducting coil according to claim 1 , further comprising a tape-shaped second layer placed between the first region and the second region and including resin.

7. The superconducting coil according to claim 1 , wherein a median particle size of the first particle is equal to or larger than 1 μm and equal to or smaller than 10 μm.

8. A superconducting device comprising:
the superconducting coil according to claim 1 .

9. A superconducting coil comprising:
a winding frame;
a superconducting wire wound around the winding frame, the superconducting wire including a first region and a second region facing the first region; and
a first layer placed between the first region and the second region, the first layer including a first particle and a thermosetting resin, the first particle including at least one of a phyllosilicate mineral and a hexagonal boron nitride, and the thermosetting resin surrounding the first particle.

10. The superconducting coil according to claim 9 , wherein the phyllosilicate mineral is at least one of a mineral belongs to a mica group and a clay mineral.

11. The superconducting coil according to claim 9 , wherein the thermosetting resin includes at least one kind of resin selected from a group consisting of an epoxy resin, a phenolic resin, an unsaturated polyester resin, a silicone resin, a urethane resin, a urea resin, a polyimide resin, and a melamine resin.

12. The superconducting coil according to claim 9 , wherein the first layer further includes a second particle having a smaller thermal expansion coefficient than the first particle.

13. The superconducting coil according to claim 9 , wherein the first layer further includes a second particle having a shape different from a shape of the first particle or a particle size different from a particle size of the first particle.

14. The superconducting coil according to claim 9 , further comprising a tape-shaped second layer placed between the first region and the second region and including resin.

15. The superconducting coil according to claim 9 , wherein a median particle size of the first particle is equal to or larger than 1 μm and equal to or smaller than 10 μm.

16. A superconducting device comprising:
the superconducting coil according to claim 9 .

Assignees

• Toshiba Kk

Inventors

• Hayashi Mariko
• Kuboki Takashi

Classifications

• H01F6/02 Primary

  Quenching; Protection arrangements during quenching {(protection circuits H02H7/001)} · CPC title

• H01F6/06

  Coils, e.g. winding, insulating, terminating or casing arrangements therefor · CPC title

• G01R33/3815

  with superconducting coils, e.g. power supply therefor · CPC title

• G01R33/34023

  Superconducting RF coils · CPC title