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1. 发明授权

US6115440A Quick release, removable top nozzle assembly 失效
标题翻译：快速释放，可拆卸顶部喷嘴组件
公开(公告)号：US6115440A
公开(公告)日：2000-09-05
申请号：US69354
申请日：1998-04-29
申请人： Paul Marcus Evans , Edmund Emory DeMario , Michael Thomas Sloop , David Douglas Seel
发明人： Paul Marcus Evans , Edmund Emory DeMario , Michael Thomas Sloop , David Douglas Seel
IPC分类号： G21C3/334 , G21C15/02 , G21C3/32 , G21C3/34
CPC分类号： G21C3/334 , Y02E30/40
摘要： The adaptor plate of a top nozzle assembly is removably secured to selected thimble tubes in a nuclear fuel assembly by quick release couplings. The openings in the adaptor plate aligned with the selected thimble tubes are counterbored from above to form shoulders with diametrically opposed slots extending downward through the shoulders. The quick release couplings include a sleeve secured to the upper end of the thimble tube. A support plate fixed to the sleeve has a pair of upwardly extending bosses engaging the slots in the adaptor plate. A latch member with a pair of diametrically opposed outwardly projecting latch ears rotates on the sleeve between a first position in which the latch ears are aligned with the slots and are positioned over the bosses so that the adaptor plate may be lifted off, and a second position with the latch ears overlaying the shoulder to latch the adaptor plate to the thimble tube. A spring member with a cylindrical body has a pair of diametrically opposed radially compliant projections formed by bulges in strips defined by circumferential slits spaced from the bottom edge of the cylindrical body which engage detents in the bosses to latch the latch member in the first, unlatched position even with the adaptor plate removed, and which engage detents in the opening in the adaptor plate to latch the latch member in the second, latched position.
摘要翻译：顶部喷嘴组件的适配器板通过快速释放联接器可拆卸地固定在核燃料组件中的选定的套管上。与所选择的套管对准的适配器板中的开口从上方沉入以形成具有向下延伸穿过肩部的直径相对的槽的肩部。快速释放联轴器包括固定到套管上端的套筒。固定到套筒的支撑板具有一对向上延伸的凸台，该凸台与适配器板中的狭槽接合。具有一对直径相对的向外突出的闩锁的闩锁构件在套筒之间在第一位置之间旋转，在第一位置中，闩锁耳与插槽对准，并且定位在凸台上方，使得适配器板可以被提起，并且第二位置与锁定耳覆盖肩膀，以将适配器板锁定到套管。具有圆柱形主体的弹簧构件具有一对直径相对的径向柔性突起，该凸起形成为由与圆柱体的底部边缘间隔开的圆周狭缝限定的凸起，其接合凸台中的棘爪，以将闩锁构件闩锁在第一未锁定即使在适配器板被移除的情况下，位置也接合在适配器板中的开口中的卡定位置以将闩锁构件锁定在第二锁定位置。

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