Connector assembly of two low-temperature superconduction cable terminals and fabrication method of connector assembly

Abstract

The invention discloses a connector assembly of two low-temperature superconduction cable terminals and a fabrication method of the connector assembly. A connector for welding two low-temperature superconduction cable terminals is provided with a copper cushion layer, two soldering layers and a fixture mechanism, wherein two sides of the copper cushion layer are arranged at the two low-temperature superconduction cable terminals in parallel, the two soldering layers are sandwiched between the two low-temperature superconduction cable terminals and the copper cushion layer, the fixture mechanism wraps outer surfaces of the low-temperature superconduction cable terminals, and the copper cushion layer, the soldering layers and the low-temperature superconduction cable terminals are tightly clamped in the fixture mechanism from inside to outside. The invention provides the connector assembly of the two low-temperature superconduction cable terminals, the connector assembly is compact in structure, the welding of the low-temperature superconduction cable terminals is achieved by employing the fixture mechanism to extrude a saddle-shaped copper cushion block, the conduction of a helium flow cooling loop is achieved by hermetical welding of an inner-layer shell, and the high-voltage insulation fabrication of the low-temperature superconduction cable terminals is achieved by hermetical welding of an outer-layer shell.

Description

technical field [0001] The invention relates to the technical field of low-temperature superconducting magnets and feeders, in particular to a two-low-temperature superconducting cable terminal connection joint assembly and a manufacturing method thereof. Background technique [0002] The magnetic confinement thermonuclear fusion device uses a special form of magnetic field to confine the ultra-high temperature plasma composed of deuterium, tritium and other light nuclei and free electrons in a state of thermonuclear reaction within a limited volume, so that it can generate a large number of nuclei in a controlled manner. A fusion reaction, a device that releases the energy stored in atomic nuclei. In order to obtain a higher confinement magnetic field, the superconducting magnets used in magnetic confinement thermonuclear fusion devices are mostly NbTi or Nb 3 Armored twisted superconducting cables made of low-temperature superconducting materials such as Sn, the current o...

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Problems solved by technology

[0004] The present invention aims at the low-temperature superconducting cable joint assembly in the magnetic confinement thermonuclear fusion device in the prior art. Defects such as high voltage requirements, the purpose is to provide a compact structure, use the clamp mechanism to squeeze the saddle-shaped copper pad to realize the welding of the low-temperature superconducting cable terminal, and use the sealing welding of the inner shell to realize the conduction of the helium flow cooling circuit. The sealing welding of the outer shell realizes the high-voltage insulation of the low-temperature superconducting cable terminal Two low-temperature superconducting cable terminal connection joint assemblies prepared

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