Nuclear fusion first wall capable of preventing temperature of part directly facing plasma from being too high

Abstract

The invention discloses a nuclear fusion first wall capable of preventing temperature of a part directly facing plasma from being too high, and belongs to the technical field of nuclear fusion devices. The outer wall surface of the fusion first wall is covered by a material layer with a thermal conductivity coefficient in the spread horizontal plane direction higher than a thermal conductivity coefficient in the thickness direction; and the outer surface of the material layer is further provided with a uniform protective layer on the wall surface directly-facing the plasma. According to the nuclear fusion first wall provided by the invention, the material layer with the thermal conductivity coefficient in the spread horizontal plane direction higher than the thermal conductivity coefficient in the thickness direction is arranged between the outer wall and the protective layer of the nuclear fusion first wall, so that transfer of heat from the wall surface, directly facing the plasma, of the first wall to the side surface can be realized, the wall temperature distribution of the first wall is uniform, the first wall is prevented from being molten due to too-high local temperature, and at the same time the structural thermal stress of the first wall can be reduced; and the nuclear fusion first wall is applied to a nuclear fusion reaction device.

Description

technical field [0001] The invention relates to a first wall of nuclear fusion that prevents the temperature of the part facing the plasma from being too high, and belongs to the technical field of nuclear fusion devices. Background technique [0002] The first wall in the cladding structure of a nuclear fusion reactor is a key component directly facing the plasma, and is subject to the radiative heat flow from the core plasma and the nuclear heat load generated by fusion neutrons on the structural material, as well as the plasma The huge mechanical stress and electromagnetic load caused by the rupture are in extremely harsh environment, so it is the most critical safety component in the cladding. In order to adapt to the structural shape of the cladding module, the first wall of the cladding adopts a U-shaped structure design, including two parts that face the plasma wall and the side wall (such as figure 1 shown), where the plasma-facing wall, as the part directly facing ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the temperature of the part facing the plasma of the existing nuclear fusion first wall is too high due to excessive heat flux, the prese

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