Cooling arrangement for a superconducting coil

摘要

A superconducting device, such as a superconducting rotor (10) for a generator or motor. A vacuum enclosure (14) has an interior wall (16) surrounding a cavity (18) containing a vacuum. A superconductive coil (22) is placed in the cavity. A generally-annularly-arranged, thermally-conductive sheet (28) has an inward-facing surface (32) contacting generally the entire outward-facing surface (24) of the superconductive coil. A generally-annularly-arranged coolant tube (34) contains a cryogenic fluid (36) and contacts a generally-circumferential portion of the outward-facing surface (30) of the sheet. A generally-annularly-arranged, thermally-insulative coil overwrap (38) generally circumferentially surround the sheet. The coolant tube (34) and the inward-facing surface (42) of the coil overwrap together contact generally the entire outward-facing surface (30) of the sheet.