Insulation treatment method for helium inlet pipe of superconducting magnet

Patent metadata

Field	Value
Publication number	US-10964466-B2
Application number	US-202017033986-A
Country	US
Kind code	B2
Filing date	Sep 28, 2020
Priority date	Dec 25, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

Disclosed is an insulation treatment method for a helium inlet pipe of a superconducting magnet. The superconducting magnet has a structure with varying T-shaped cross section. The irregular parts of the magnet are filled with G10 to reduce the difficulty in the insulation treatment caused by the irregular shape. Moreover, a skirt-shaped insulating material is provided around the metal conduit to overcome the reduction in the insulation electrical performance caused by the defects in the insulation treatment for such irregular parts. The application designs a sample structure for insulation treatment, and can wrap the superconducting magnet having the T-shaped varying cross-section with insulating materials before vacuum pressure impregnation, meeting special requirements of high-voltage insulation treatment for the superconducting magnet with a complex structure under low temperature and vacuum environment.

First claim

What is claimed is:

1. An insulation treatment method for a helium inlet pipe of a superconducting magnet, comprising:
welding an end of a metal conduit to an outer surface of a superconducting conductor;
wrapping an outer surface of the metal conduit with a composite insulating tape;
covering the outer surface of the superconducting conductor with fiberglass cloth;
filling spaces around a junction between the metal conduit and the superconducting conductor with G10, and fixing the G10 to the metal conduit and the superconducting conductor with a binding tape;
covering the G10 with a skirt-shaped insulating material with the metal conduit as a center; and
fixing the skirt-shaped insulating material to the metal conduit and the superconducting conductor with the binding tape;
wherein the binding tape is made of a composite insulating material.

2. The insulation treatment method of claim 1 , wherein the composite insulating tape, the binding tape and the skirt-shaped insulating material are all made of a composite material of the fiberglass cloth and a polyimide film; and the G10 is a composite material composed of fiberglass and epoxy resin.

Assignees

• Hefei Inst Physical Sci Cas

Inventors

• Song Yuntao
• Shen Guang
• Lu Kun
• Hu Bing
• Yu Xiaowu
• Wei Jing

Classifications

• F16L59/02

  Shape or form of insulating materials, with or without coverings integral with the insulating materials · CPC title

• C22C38/00

  Ferrous alloys, e.g. steel alloys (cast-iron alloys C22C37/00) · CPC title

• C22C38/06

  containing aluminium · CPC title

• C22C38/32 Primary

  with boron · CPC title

• H01F6/06

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