Multi-stage supporting type multi-section control drum for horizontal reactor

Abstract

The invention belongs to the technical field of active reactivity control of horizontal reactors, and particularly relates to a multi-stage supporting type multi-section control drum for a horizontal reactor, which is arranged in a hole channel (12) of a radiation shielding layer at the periphery of a reactor core of the horizontal reactor and comprises a plurality of cylindrical control assemblies (4) connected in series, a neutron absorption plate (6) is arranged on the outer surface of one side of the control assembly (4), and the neutron absorption plate (6) faces or deviates from the reactor core by rotating the control assembly (4), so that power control over the reactor core is achieved. Compared with a traditional control drum structure, on the premise that the moderation performance is guaranteed, the diameter adjustable range is larger, the requirement for a driving mechanism is lower, the normal operation temperature limiting value is higher, the number of the control assemblies (4) can be flexibly adjusted and arranged in the axial direction, and the reactor control drum structure has the obvious advantage of miniaturization of the whole reactor and is suitable for large-scale popularization and application. And the device can be widely applied to various models of horizontal reactors.

Description

technical field [0001] The invention belongs to the technical field of dynamic and reactive control of horizontal reactors, and in particular relates to a multi-stage support type multi-section control drum for horizontal reactors. 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 condit...

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Problems solved by technology

[0005] The object of the present invention is to address the defects of the prior art and provide a multi-stage support type multi-section control drum for a horizontal reactor, which overcomes the gravity to cause excessive deflection of the control drum, thereby causing structural failure and endangering the safety of the reactor; Overcome the problem of poor reactor moderation effect due to the excessive reduction of the moderator dosage due to the arrangement of the control drum; overcome the problem of heavy weight of the rotating part of the control drum and excessive requirements on the driving mechanism

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