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1. 发明授权

US4820474A Pressure seal stud hole plug unit 失效
标题翻译：压力密封螺栓孔插头单元
公开(公告)号：US4820474A
公开(公告)日：1989-04-11
申请号：US127445
申请日：1987-12-02
申请人： Bruce E. Leslie , Paul N. Shadle , Herman C. Wolf
发明人： Bruce E. Leslie , Paul N. Shadle , Herman C. Wolf
IPC分类号： G21C13/067 , G21C13/06 , B65D53/00 , F16J15/00
CPC分类号： G21C13/067 , Y02E30/40
摘要： A reactor stud hole plug unit having a mandrel with a central stem having a threaded upper portion, a longitudinal passageway extending therethrough and a mandrel plate attached to the lower end. The mandrel plate has threads on its periphery which engage internal threads on a stud hole in a nuclear reactor, and an annular stop is located at the upper end of the threads on the mandrel plate which engages a shoulder on the cavity when the mandrel plate is in position in a stud hole. A compression plate with a central opening having a diameter slightly larger than the diameter of the upper portion of the mandrel stem fits over the mandrel stem, and an annular sealing ring is positioned around the periphery of the mandrel plate above the annular shoulder and in contact with the compression plate when the compression plate is positioned over the mandrel stem. A drive nut is threadably engaged with the threads on the upper portion of the mandrel stem to force the compression plate toward the mandrel plate to compress the sealing ring and seal the stud hole.
摘要翻译：一种反应堆螺栓孔塞单元，具有具有中心杆的心轴，所述心轴具有螺纹上部，延伸穿过其的纵向通道和连接到下端的心轴板。心轴板在其周边上具有螺纹，其接合核反应堆中的螺柱孔上的内螺纹，并且环形止动件位于心轴板上的螺纹的上端，当心轴板为在螺柱孔中的位置。具有中心开口的压缩板具有略大于心轴杆上部直径的直径，装配在心轴杆上，并且环形密封环围绕心轴板的周边定位在环形肩部上方并与之接触当压缩板定位在心轴杆上方时与压缩板。驱动螺母与心轴上部的螺纹螺纹接合，以迫使压板朝向心轴板压缩密封环并密封螺柱孔。

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