Patent ID: 6883549
Filing Date: 2005-04-26
Classification: F16L,H01B,Y02E

Abstract:
1. A conduit carrying a cryogenic superconductor cable, said conduit further comprising at least inner and outer metal pipes arranged concentrically and spaced apart from one another, an insulation layer being situated in an annular gap between the metal pipes, and the annular gap being evacuated, wherein the exterior of the outer metal pipe is separated at predetermined intervals to form openings and above each opening a pump connector is welded vacuum-tight to the outer metal pipe, wherein the pump connectors each have metal ring halves separated from one another at a distance along the longitudinal axis, said metal ring halves being welded to the ends of the corrugated metal pipe which is open all around, and wherein two casing halves, in the lateral surface of which is provided a connector for a pump, cover the metal rings and are welded vacuum-tight to their lateral surface.