US 12,073,991 B2
Superconducting coil device and electric current introduction line
Kenta Demura, Yokosuka (JP)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Jul. 11, 2022, as Appl. No. 17/862,307.
Claims priority of application No. 2021-116492 (JP), filed on Jul. 14, 2021.
Prior Publication US 2023/0020572 A1, Jan. 19, 2023
Int. Cl. H01F 6/06 (2006.01); H01F 6/00 (2006.01); H01F 6/04 (2006.01)
CPC H01F 6/06 (2013.01) [H01F 6/008 (2013.01); H01F 6/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A superconducting coil device comprising:
a vacuum vessel;
a superconducting coil located inside the vacuum vessel;
a heat shield surrounding the superconducting coil within the vacuum vessel; and
an electric current introduction line configured to introduce an electric current into the superconducting coil, the electric current introduction line comprising:
an outer current lead part that is located outside of the heat shield, within the vacuum vessel, and that is thermally coupled to the heat shield, and
an inner current lead part that is located inside of the heat shield and connects the outer current lead part to the superconducting coil,
wherein the outer current lead part comprises:
a main body serving as an electric current path to the superconducting coil and formed of a metal material,
an insulation layer that covers the main body and formed of a synthetic resin material, and
a heat shield layer that covers the insulation layer and has a lower emissivity than the insulation layer.