A Water-Helium Cooled Ceramic Breeder Cladding for a Fusion Reactor

Abstract

The invention discloses a fusion reactor water-helium cold ceramic breeder cladding, which comprises parts such as a first wall, a cooling plate, separators and side plates. The cladding simultaneously adopts water and helium as a coolant, the water is used for cooling the first wall, and the helium is used for cooling the parts except the first wall. The first wall is a U-shaped plate; the cooling plate is in a shape like a Chinese character ao; the cooling plate is located at the inner side of the first wall and is connected with the side wall of the first wall; the cooling plate is crossed with the separators and the side plates, the inner space of the cladding is divided to multiple independent cavities arranged along a radial direction, cavities contacted with the first wall are filled with Li2TiO3 / Be12Ti mixed ball beds as tritium breeding zones, and cavities not contacted with the first wall are filled with Be ball beds as neutron multiplication zones. The fusion reactor water-helium cold ceramic breeder cladding has the advantages that the surface heat flow endurance capability is strong, the tritium production performance is good, the coolant outlet temperature is high, the coolant is well compatible with the neutron multiplication zone material, the flow of the coolant is easy to control, and the development prospect is good.

Description

technical field [0001] The invention belongs to the field of fusion reactor cladding design, in particular to a fusion reactor water-helium cooled ceramic multiplier cladding. Background technique [0002] The cladding is the key energy conversion component facing the plasma in the fusion reactor. It has important functions such as tritium multiplication, energy conversion and radiation shielding. The carrier under the fusion reactor material experiment. Cladding technology is a key technology that must be solved for the application of fusion energy. At present, dozens of cladding concepts have been developed at home and abroad. From the material form of the tritium breeder used in the cladding, the existing cladding can be divided into two types: solid breeder cladding and liquid breeder cladding. The solid breeder cladding mainly uses lithium ceramic pellets such as lithium orthosilicate, lithium titanate, lithium zirconate, and lithium metaaluminate as the tritium bree...

AI Technical Summary

Problems solved by technology

The disadvantages of the existing ceramic multiplier cladding are: (1) Only water is used as the coolant. On the one hand, due to the relatively low boiling point of water, the temperature of the water at the outlet of the cladding is low, which affects the thermoelectric conversion efficiency and reduces the polymerization rate. Substation economy, on the other hand, water flows in the flow channel of cooling components in the breeding area, if the structure of the flow channel breaks, the water may come into contact with Be and undergo a chemical reaction to generate hydrogen, which increases safety hazards; (2) only use Helium is used as a coolant. On the one hand, due to the poor cooling performance of helium, the surface heat flow of the first wall is weak, which limits the application of the cladding under high fusion power conditions. On the other hand, because helium cannot slow Fast neutrons reduce the tritium breeding capacity in the breeding area, so that the tritium production is low; (3) only helium or water is used as the coolant, because the coolant needs to cool the cladding in a certain order. The various components of various components make the number of header stages more, which increases the difficulty of controlling the uniformity of coolant flow distribution in each coolant flow channel of the cladding

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