Superconducting electrical conductor

Details Superconducting electrical conductor Superconducting electrical conductor

1987-07-20

1989-07-04

Nimmo, Morris H.

Electricity: conductors and insulators

With fluids or vacuum

With cooling or fluid feeding, circulating or distributing

29599, 1741251, 427 62, 439427, 505886, 505887, 505917, 505925, 505926, H01B 1200, H01L 3924

Patent

active

048453080

ABSTRACT:
A superconducting electrical conductor comprises a porous substrate of bonded fibers which are coated by ceramic oxide superconducting material of the perovskite type so that its critical temperature of superconductivity is at or above the boiling point of liquid nitrogen. To form electrical cable, the conductor is encased within an inner tube. An outer tube surrounds the inner tube and defines an evacuated annular space therewith. This provides a thermal barrier between substrate, which will be bathed by liquid nitrogen, and the ambient. Electrical and heat insulation surrounds the outer tube.
Joint connectors in the form of multiple rigid rods, each coated by superconducting material and held in a perforated frame, are used to connect facing ends of the substrate to form an electrical connection from one length of conductor to the next.

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Jin, S.; et al.; "Fabrication of Dense Ba.sub.2 YCu.sub.3 O.sub.7-6 Superconductor Wire by Molten Oxide Processing"; Applied Physics Lett. 51, (12); Sep. 21, 1988; American.

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