A nuclear fuel guide tube expansion device
Through the innovative design of the nuclear fuel conduit expansion device, the combination of expansion ring and expansion flap is used to achieve stable expansion of the outer and inner conduits, solving the problem of cracks in the conduits during the expansion process and improving the yield.
CN119972951BActive Publication Date: 2026-01-27HEBEI UNIV OF TECH
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Patent Information
- Application Number
- CN202510196583.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2045-02-21
AI Technical Summary
Technical Problem
The existing nuclear fuel conduit expansion process is prone to cracking of the outer or inner conduit, resulting in a low yield rate.
Method used
A nuclear fuel conduit expansion device is adopted, which uses a combination of connecting pipe, expansion flap, expansion ring and transmission assembly to make the outer and inner conduits plastically deform on the outside by the interaction between the expansion ring and the expansion flap, so as to achieve fixation.
Benefits of technology
This improved the yield rate of expansion joints, reduced the occurrence of cracks in the conduit during the expansion process, and ensured the stability and reliability of the conduit.
✦ Generated by Eureka AI based on patent content.
Abstract
The present application provides a kind of nuclear fuel conduit expansion joint device, comprising: the outer conduit and inner conduit are arranged between multiple expansion joint petals, the inner side wall of expansion joint petal has protruding part for abutting with outer conduit.The expansion joint ring is arranged outside multiple expansion joint petals.The inner diameter of expansion joint ring is larger near one end of connecting pipe, and the inner diameter of the other end is smaller.The thickness of expansion joint petal is smaller near one end of connecting pipe, and larger away from one end of connecting pipe.When transmission assembly drives expansion joint ring to move along the outside of multiple expansion joint petals away from connecting pipe, expansion joint ring abuts with the outer side wall of expansion joint petal, so that multiple expansion joint petals are close to each other away from the end of connecting pipe, and then the abutting force of protruding part and outer conduit increases, and plastic deformation occurs in outer conduit and inner conduit.Thereby, outer conduit and inner conduit are expanded and fixed.This way of applying pressure from the outside to produce plastic deformation, outer and inner conduit are not easy to crack, and the yield after expansion is higher.
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