Terminal structure of superconducting cable

Details Terminal structure of superconducting cable Terminal structure of superconducting cable

2005-02-15

2010-06-01

Silverman, Stanley (Department: 1793)

Superconductor technology: apparatus, material, process

High temperature devices, systems, apparatus, com- ponents,...

Superconductor having metal connect, pad, connect structure,...

C505S163000, C174S015300

Reexamination Certificate

active

07729731

ABSTRACT:
A terminal structure of a superconducting cable is provided that is capable of preventing degradation in airtightness of a seal provided on the boundary between a room-temperature side and a cryogenic side for a long-term use. The terminal structure includes a terminal of a superconducting cable, a bushing providing electrical conduction with a superconducting conductor of the cable, and a refrigerant bath housing the terminal and the bushing. The refrigerant bath includes a liquid nitrogen layer in its cryogenic side and a nitrogen gas layer in its room-temperature side that are adjacent to each other. In the nitrogen gas layer, distance t between an inner surface of the refrigerant bath and an outer periphery of the bushing is dimensioned such that nitrogen gas is kept in a gaseous state without being pressurized by a pressurizer and respective pressures of nitrogen gas and liquid nitrogen counterbalance each other.

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Decision to Grant dated Aug. 1, 2008 for related Russian patent application 2007123021/09(025068).

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