Distributed electric current and cold mass transmission feeder line for large-scale super-conductive tokamak magnet

Abstract

The invention discloses a distributed electric current and cold mass transmission feeder line for a large-scale super-conductive tokamak magnet. The distributed electric current and cold mass transmission feeder line comprises an electric current lead terminal box; two high temperature super-conductive electric current leads are put into the electric current lead terminal box and form electric connection with a super-conductive cable I by virtue of a super-conductive joint I; a transition feeder line component is connected inward along the electric current lead terminal box; and an internal feeder line component is connected inward along the transition feeder line component. The feeder line provided by the invention does not produce mutual interference, processing and assembling can be independently completed, a mounting position of the feeder line can be arranged at a position most suitable for connection with a corresponding magnet, assembling difficulty is reduced, a connection space inside a device is saved, and the feeder line can be distributed at different layers of buildings according to layout of the buildings, so that daily maintenance can be beneficially implemented.

Description

technical field [0001] The invention relates to the technical field of superconducting magnets, in particular to superconducting tokamak magnets used in magnetic confinement fusion devices, and in particular to a distributed current and cold mass transmission feeder suitable for large superconducting tokamak magnets. Background technique [0002] In a typical superconducting tokamak magnetic confinement fusion device, the high-temperature plasma of hundreds of millions of degrees Celsius is confined by the ring-shaped strong magnetic field formed by the superconducting magnet, suspended in the vacuum chamber and moving along the closed magnetic field line, forming the core of the nuclear fusion reaction. basic environment. In order to obtain a specific shape of the spatial magnetic field, the superconducting tokamak magnet system is composed of toroidal field superconducting magnets, poloidal field magnets, central solenoids, correction field magnets, etc. These superconduct...

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Problems solved by technology

[0004] Although the above-mentioned centralized current and cold mass transmission form has been applied in superconducting tokamak magnetic confinement fusion devices, its structure is only suitable for small and medium-sized superconducting tokamaks, and the diameter and height of the general device are less than 10 meters

For the superconducting tokamak used in future fusion reactors, since the diameter and height of the device reach or exceed 40 meters, and the distance between the superconducting magnet and the external power supply, low temperature, and measurement and control systems is relatively long, centralized current and cold mass transmission has already been achieved. Unable to meet the overall design requirements of the superconducting magnet system and the tokamak device's supporting building, and the assembly and maintenance costs are high

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