发明名称 |
Method and apparatus for removing a metallic plug from a tube by simultaneously heating and stretching the plug. |
摘要 |
<p>A method and an apparatus (45) for removing metallic plugs (1) from conduits (3) such as the heat exchanger tubes (3) in a nuclear steam generator. In such tubes (3), plugs (1) formed from a cylindrical shell (7) of Inconel are radially expanded in sealing engagement with the open end of an Inconel tube (3) mounted in a tubesheet (5). The method and the apparatus (45) of the invention remove such plugs (1) by heating the shell (7) while applying a tensile force along the longitudinal axis of the plug shell (7) sufficient to elongate it.</p> |
申请公布号 |
EP0347584(A2) |
申请公布日期 |
1989.12.27 |
申请号 |
EP19890108941 |
申请日期 |
1989.05.18 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
STICKEL, MARK MCCUNE;EVERETT, JAMES WILSON;SHIREY, RAY ALBERT;HOSLEY, ROY DAVID;CIFERNO, EUGENE PAUL;FULMER, GEORGE DAVID |
分类号 |
F16L55/10;B23P19/02;B25B27/02;F22B37/02;F28F11/02 |
主分类号 |
F16L55/10 |
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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