Device and method for protecting defect regions of

专利名称：Device and method for protecting defect

regions of steam generator tubes duringremoval

发明人：Brunner, Michael George,Calhoun, Gregory

Lee

申请号：EP85309406.8申请日：19851223公开号：EP0186489B1公开日：19910403

摘要：A tube protection device in a tube-type steam generator for preventing

deformation of a tube during withdrawal from the steam generator, is positioned within aheat exchange tube to span a defective region. Withdrawal of a defective region of thetube from the generator is resorted to for subsequent defect analysis and testing. Thetube protection device includes gripper means at the opposite ends thereof which areexpansible from a relaxed condition, frictionally engaging the contiguous interior sidewallsurfaces of the tube at positions respectively spaced from the defect and spanning thedefect region. An installation tool includes an elongated linkage mechanism insertablethrough an open end of the tube for positioning the tube protection device and foroperating same from the accessible portion of the linkage mechanism exterior to theopen end of the tube between said relaxed and clamped conditions, and for remotewithdrawal of the tube protection device from the tube.

申请人：WESTINGHOUSE ELECTRIC CORPORATION

地址：WESTINGHOUSE BUILDING GATEWAY CENTER; PITTSBURGH PENNSYLVANIA

15235

代理机构：van Berlyn, Ronald Gilbert

更多信息请下载全文后查看