Horizontal high-temperature-resistant multi-section control drum

Abstract

The invention relates to a horizontal high-temperature-resistant multi-section control drum, which comprises a graphite core shaft, a graphite section and a B4C plate which are arranged in a control drum hole channel, wherein two ends of the graphite core shaft are fixed, the graphite section is sleeved on the graphite core shaft, the B4C plate is positioned in the graphite section, and the graphite section is controlled by a driving mechanism to rotate. According to the invention, the combined design of the graphite core shaft and the graphite section fills the interior of the control drum, so that the space of the control drum is fully utilized, and the moderation effect of a reactor is ensured; the weight of a part needing to rotate is reduced, and the stress and abrasion in the operation process are reduced; the graphite section can be designed to be of a multi-section structure, so that the maximum stress generated by each graphite section due to torque in the rotating process is reduced, thermal expansion and irradiation swelling are dispersed, and cracking caused by thermal expansion and irradiation swelling is avoided; and the design that the B4C plate is assembled in the graphite section can control the gap between the B4C plate and the graphite section, so that the interaction force between the B4C plate and the graphite section caused by size change caused by thermal expansion and irradiation swelling is avoided, and friction between the B4C plate serving as the outer edge of the control drum and the hole channel can be avoided.

Description

technical field [0001] The invention belongs to the design of a horizontal reactor control device, in particular to a horizontal high-temperature-resistant multi-section control drum. Background technique [0002] A nuclear reactor is a device that can maintain a controllable self-sustaining chain nuclear fission reaction to realize the utilization of nuclear energy. At present, most of the reactors are of vertical design, but they are usually of high height, which is not conducive to layout. Therefore, the scheme of horizontal core was proposed. Compared with the vertical core, the horizontal core is shorter and more convenient to arrange, and can even meet the design requirements of the movable reactor, which has obvious advantages. [0003] As the container structure of the neutron absorber core block, most of the traditional reactors adopt the structure of control rods, but because the control rods need to meet the conditions fully proposed, the overall design size is ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the defects of the prior art, to provide a horizontal high-temperature-resistant multi-section control drum, and to solve the following technical problems: 1. Overcoming the excessive reduction of the moderator dosage due to the arrangement of the control drum, thereby causing the reactor moderator The problem of poor effect; 2. Overcome the influence of gravity on the structural strength of the control drum itself, and solve the problem of excessive deflection and wear, which will cause structural failure and even endanger the safety of the reactor; 3. Avoid the use of metal outer cladding, Solve the problem that the control drum cannot adapt to the higher service temperature

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