Distributed current and cold mass transmission feeder system of superconducting Tokamak magnet

Abstract

The invention discloses a distributed current and cold mass transmission feeder system of a superconducting Tokamak magnet. The system comprises a current lead terminal box, a transition feeder assembly and an internal feeder assembly, the current lead terminal box is connected with the internal feeder assembly through the transition feeder assembly, the interior of the current lead terminal box is in a vacuum state, and a vacuum isolation structure is arranged between the transition feeder assembly and the current lead terminal box. The feeder system provided by the invention is provided witha vacuum partition structure; the vacuum connection between the transition feeder assembly and the current lead terminal box can be isolated; the feeder line systems do not interfere with each otherand can be independently machined and assembled, the installation positions of the feeder line systems can be arranged at the positions most suitable for being connected with the corresponding magnets, the assembly difficulty is reduced, the connection space in the device is saved, meanwhile, the feeder line systems can be distributed at different levels of a building according to building layout,and daily maintenance is facilitated.

Description

[0001] This application is a divisional application with the application number 201810059655.4, the application date is January 22, 2018, and the invention name is "Distributed current and cold mass transmission feeder for large superconducting tokamak magnet". technical field [0002] The invention relates to the technical field of superconducting magnets, in particular to superconducting tokamak magnets used in magnetic confinement fusion devices, in particular to a distributed current and cold mass transmission feeder system suitable for superconducting tokamak magnets. Background technique [0003] 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 environme...

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Problems solved by technology

[0005] 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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