Cooling arrangement for a superconducting coil

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type

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310 52, 310 54, 310261, 505877, 505878, 505879, H02K 5500, H02K 900, H01F 700

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active

057740321

ABSTRACT:
A superconducting device, such as a superconducting rotor for a generator or motor. A vacuum enclosure has an interior wall surrounding a cavity containing a vacuum. A superconductive coil is placed in the cavity. A generally-annularly-arranged, thermally-conductive sheet has an inward-facing surface contacting generally the entire outward-facing surface of the superconductive coil. A generally-annularly-arranged coolant tube contains a cryogenic fluid and contacts a generally-circumferential portion of the outward-facing surface of the sheet. A generally-annularly-arranged, thermally-insulative coil overwrap generally circumferentially surrounds the sheet. The coolant tube and the inward-facing surface of the coil overwrap together contact generally the entire outward-facing surface of the sheet.

REFERENCES:
patent: 3343111 (1967-09-01), Kafka
patent: 4682134 (1987-07-01), Laskaris
patent: 5325080 (1994-06-01), Chandratilleke et al.
patent: 5381122 (1995-01-01), Laskaris et al.
patent: 5404122 (1995-04-01), Maeda et al.
patent: 5532663 (1996-07-01), Herd et al.
U.S. Patent Application Serial No. 08/267,625, filed Jun. 29, 1994, by Laskaris et al., entitled "Superconducting Rotor for an Electrical Machine". (To issue as U.S. Pat. 5,548,168 on Aug. 20, 1996).
U.S. Patent Application Serial No. 08/402,438, filed Mar. 13, 1995, by Herd et al., entitled "Superconducting Field Winding Assemblage For An Electrical Machine".

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