Hot tube micro-heap fuel assembly base function simulation rod installation tool and method

By designing a functional simulation rod installation fixture for the heat pipe microreactor fuel assembly substrate, and utilizing the synergistic effect of the support frame and clamping mechanism, the conflict between the stable clamping of the slender fuel assembly substrate and the bottom operating space during the installation process was resolved, achieving efficient and stable simulation rod installation.

CN122245849APending Publication Date: 2026-06-19SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO LTD
Filing Date
2026-03-26
Publication Date
2026-06-19

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Abstract

This invention provides a tooling and method for installing functional simulation rods on a heat pipe microreactor fuel assembly substrate, relating to the field of nuclear energy equipment manufacturing tooling technology. It aims to address the issue of simultaneously meeting the requirements for stable installation and reserved bottom operating space during the installation of functional simulation rods on slender nuclear fuel assembly substrates. The vertical space of the support frame can position and fix the slender nuclear fuel assembly substrate, preventing it from swaying or shifting, and ensuring initial installation stability. The unobstructed operating space between the bottom of the nuclear fuel assembly substrate and the bearing surface allows installers to freely perform bottom operations, improving operational flexibility and efficiency. The clamping mechanism clamps from the sides and bottom edges, stabilizing the nuclear fuel assembly substrate from multiple directions, further enhancing the stability of the installation process and ensuring reliable installation of the functional simulation rods.
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