A cladding structure for a fusion reactor

Abstract

A novel cladding structure for a fusion reactor comprises a U-shaped first wall, cover plates, a front back plate, a rear back plate and a proliferation unit, the U-shaped first wall and the upper andlower cover plates are internally provided with slots, and the upper and lower cover plate and the U-shaped first wall are welded to the front and rear back plates, thereby forming a sealed outer box. The proliferation unit is inserted in the front and rear back plates to be fixedly connected, an internal tritium proliferation agent is wrapped by a cooling plate in the form of a pebble bed, and the pebble bed and the cooling plate are sealed in a neutron multiplication agent. The front and rear back plates and the upper and lower cover plate and the U-shaped first wall form a six-layer platelike gas header which is used for collecting and reallocating coolants and purge gas. According to the novel cladding structure for a fusion reactor, on the premise of ensuring a module proliferation effect, a central area adopts an M-shaped cooling channel, thus a cooling effect can be better improved, and installation procedures are reduced, thereby facilitating replacement and maintenance.

Description

technical field [0001] The invention belongs to the technical field of magnetic confinement nuclear fusion, and in particular relates to a cladding structure for a fusion reactor. Background technique [0002] The tritium breeding cladding in the fusion reactor is a key component in the tokamak device. Its main functions include: 1. The fusion reaction raw material tritium is bred through the reaction of fusion neutrons and lithium ceramic tritium breeders, and the tritium is carried out by the corresponding tritium extraction system. Tritium extraction; 2. The fusion reaction heat deposited into the cladding is taken out by the helium cooling system and converted into electrical energy; 3. Radiation shielding, reducing the diffusion of radioactive substances in the reactor, etc. [0003] Solid-state cladding is one of the cladding concepts most likely to be realized in fusion reactor claddings in the world. As an important content of solid-state cladding design, its cooling...

AI Technical Summary

Problems solved by technology

In the prior art, the design of the cooling system of the helium-cooled solid cladding is mostly complicated and the cooling effect is not good, and there is no loop backflow effect

At the same time, most of the existing solid-state cladding modules are large-scale components, the installation procedures are cumbersome, and the processing is extremely difficult, which is not suitable for large-scale production.

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