Cryogenic cable and method of making same

Details Cryogenic cable and method of making same Cryogenic cable and method of making same

1980-01-14

1983-07-19

Mayewsky, Volodymyr Y.

Electricity: conductors and insulators

With fluids or vacuum

With cooling or fluid feeding, circulating or distributing

29559, 174126S, 174128S, 174 29, 138 28, H01B 734

Patent

active

043945341

ABSTRACT:
A cable for cryogenic use includes an inner conductor and a solid polymeric insulator loosely positioned about said inner conductor about 0.degree. C. A collapsible spacer can be positioned between the inner conductor and the polymeric insulator to further space the insulator away from the conductor and thereby accommodate greater shrinkage of the insulator. In fabricating the cable, the cable is sealed and pressure is applied to the cable to expand the insulation. The cable is placed inside a rigid cylinder having an inside diameter larger than the outside diameter of the cable. The cylinder is heated to facilitate expansion of the insulation, and the cylinder is subsequently cooled while maintaining pressure to the cable.

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