Reactor core structure of high-temperature gas cooled reactor with embedded control rod

By adopting an embedded arcuate second control rod and a slidable first control rod structure in a high-temperature air-cooled stack, the problems of dense arrangement of control rod drive mechanisms and difficulty in repair are solved, and space saving and reactive control are simplified.

CN119626595AActive Publication Date: 2025-03-14HUANENG NUCLEAR ENERGY TECH RES INST CO LTD +1
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Patent Information

Application Number
CN202411537660.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-03-14
Estimated Expiration
2044-10-30

AI Technical Summary

Technical Problem

In the ball-bed high-temperature air-cooled reactor, the control rod adopts a segmented inner and outer sleeve structure and too many circumferential control rods, resulting in dense arrangement of control rod driving mechanisms on the top of the reactor, occupying a large amount of circumferential space, causing maintenance difficulties and cumbersome adjustments.

Method used

A high-temperature air-cooled stack core structure with an embedded control rod is adopted, wherein the second control rod extends axially and is rotatable along the cold helium channel, and its radial cross-section is arc-shaped, which is equal to the number of cold helium channels. The first control rod extends axially and is slidable along the control rod channel, and its number is different.

Benefits of technology

The number of adjustment rods and their corresponding driving mechanisms in the first control rod is reduced, circumferential space is saved, maintenance and replacement is facilitated, and the reactivity control of the reactor is simplified.

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Abstract

The invention relates to the technical field of high-temperature gas cooled reactor control rods, and discloses a high-temperature gas cooled reactor core structure with an embedded control rod, which comprises a cold helium channel, the second control rods extend in the axial direction of the cold helium channel and are rotatably arranged around the axis of the cold helium channel, the radial section of each second control rod is in an arc shape, and the number of the second control rods is equal to that of the cold helium channel; a control rod channel; the first control rods extend in the axial direction of the control rod channels and are arranged in a sliding mode along the axes of the control rod channels, and the number of the first control rods is different from that of the control rod channels. The reactor control rod has the beneficial effects that the second control rod is arranged in the cold helium channel, so that the number of adjusting rods in the first control rod and the number of corresponding driving mechanisms can be reduced, the use of circumferential space is reduced, a worker can conveniently maintain and replace the reactor control rod, and reactivity control over a reactor is facilitated.
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Citation Information

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