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1. 发明授权

US5001949A Apparatus and method for removing nuclear fuel assembly end pieces 失效
标题翻译：用于去除核燃料组件端部件的装置和方法
公开(公告)号：US5001949A
公开(公告)日：1991-03-26
申请号：US284519
申请日：1988-12-15
申请人： Jean-Albert Beneck , Claude Quayre , Jean Moreau , Daniel Vermeille
发明人： Jean-Albert Beneck , Claude Quayre , Jean Moreau , Daniel Vermeille
IPC分类号： G21C19/33 , G21C19/34
CPC分类号： G21C19/34 , Y10T82/16672
摘要： An apparatus is used for cutting guide tubes of a nuclear fuel assembly below an end-piece and removing the end-piece. The apparatus includes a mount which may be removably locked and centered on the end-piece. Cutting tools insertable in the guide tubes each include a hollow shaft whose end part is split by longitudinal slits into radially expandable fingers each having a cutting edge. A stem movable axially along each shaft cooperates therewith for spreading the fingers out radially and retracting them. The shafts are mounted for rotation on a plate which is vertically movable with respect to the mount by a jack and carries a motor for simultaneously rotating all shafts. The shafts are carried by an expansion unit movable vertically with respect to the plate by a jack and including the stems. A method for separating the end-piece with the apparatus is also described.
摘要翻译：一种装置用于在端件下方切割核燃料组件的导管并移除端件。该装置包括可拆卸地锁定并位于端件上的安装件。可插入引导管中的切削刀具各自包括中空轴，其中端部由纵向狭缝分成可分别具有切削刃的可径向扩张的指状物。沿着每个轴可轴向移动的杆与其配合，用于使指状物径向扩张并收回。轴安装在一个可通过千斤顶相对于安装座垂直移动的板上旋转，并承载用于同时旋转所有轴的马达。轴由一个膨胀单元承载，该膨胀单元通过千斤顶相对于板垂直移动并且包括杆。还描述了用该装置分离端件的方法。

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