| 主权项 |
1. Superconducting arrangement comprising:
at least one superconductive cable; a first cryostat surrounding the superconductive cable for conducting a first cooling agent therethrough, wherein the first cryostat is composed of two metal pipes which are arranged coaxially and at a distance from each other and form a thermal insulation therebetween, and wherein the first cryostat encloses a hollow space over its entire length in which the cable is arranged and through which, during operation of the arrangement, the first cooling agent is conducted, wherein, as the first cooling agent a liquid gas cooled to a temperature of 39K or lower, or a less cooled liquid or gaseous cooling agent, are used; and a second cryostat is formed around the first cryostat, said second cryostat is composed of two pipes formed coaxially with and at a distance from the first cryostat for conducting a second cooling agent, wherein a liquefied gas having a temperature of 112K or lower is conducted, wherein magnesium diboride is used as superconductive material in said superconductive cable, and wherein high voltage insulation is arranged in the intermediate space between the first cryostat and the second cryostat, said high voltage insulation completely surrounding and resting on an outer pipe of the first cryostat, and wherein during operation of the arrangement liquefied gas flows through the intermediate space and impregnates the high voltage insulation. |
