发明名称 |
Method and apparatus for securing structural tubes in nuclear reactor fuel assemblies |
摘要 |
An insert for providing a reduced inside diameter for a structural tube, specifically an instrumentation guide tube, of a nuclear fuel assembly. The insert has forming lobes which coact with the structural tube to plastically deform the structural tube and mechanically lock it with respect to grid straps of a grid assembly. The insert also has centering lobes to prevent it from being expanded in other than a coaxial alignment with the structural tube. An expansion tool is provided for sequentially registering with and expanding sequential forming lobes in a simplified manner whereby all of the operations necessary to assemble the structural tube in the fuel assembly can be easily and accurately performed.
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申请公布号 |
US4663119(A) |
申请公布日期 |
1987.05.05 |
申请号 |
US19850790677 |
申请日期 |
1985.10.23 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
KERREY, JOHN S. |
分类号 |
G21C3/33;G21C3/334;(IPC1-7):G21C3/32 |
主分类号 |
G21C3/33 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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