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JP2012021631A Inspection hole plug 审中-公开
标题翻译：检查孔插头
公开(公告)号：JP2012021631A
公开(公告)日：2012-02-02
申请号：JP2010161773
申请日：2010-07-16
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： HIRANO HIROSHI
IPC分类号： F16L55/10 , F22B37/02 , G21C17/003 , G21D1/00
CPC分类号： F22B1/023 , F16L55/1125 , F22B37/002 , F22B37/223
摘要： PROBLEM TO BE SOLVED: To easily perform assembly at the time of plugging an inspection hole.SOLUTION: An inspection hole plug 1 that plugs an inspection hole of an outer cylindrical casing 136 surrounding a tube bundle in a steam generator includes: a base 2 fixed to the outer cylindrical casing 136 and having an opening 21 that serves as the inspection hole; a fitting member 3 that plugs the opening 21 of the base 2; a fitting unit 4 that guides rotational movement of the fitting member 3 in a circumferential direction along an inner peripheral edge of the opening 21 of the base 2 and restricts the rotational movement by an axial movement of the fitting member 3 parallel to a central axis R of the rotational movement to fit the inner peripheral edge of the opening 21 of the base 2 and an outer peripheral edge of the fitting member 3 to each other; a holding member 5 into which a shaft portion 31 extending from the fitting member 3 along the axial direction is inserted and that is provided to be capable of abutting on the base 2; and a fastening member 6 that is screwed onto the shaft portion 31 of the fitting member 3 and holds the fitting member 3 at a position axially moved by fastening thereof with the holding member 5 abutting on the base 2.
摘要翻译：要解决的问题：在堵塞检查孔时容易进行组装。解决方案：在蒸汽发生器中堵塞围绕管束的外圆柱形壳体136的检查孔的检查孔塞1包括：固定到外圆柱形壳体136并具有用作检查孔; 嵌合基座2的开口部21的嵌合部件3; 沿着基座2的开口21的内周缘沿圆周方向引导装配构件3的旋转运动的装配单元4，通过装配构件3的平行于中心轴线R的轴向运动来限制旋转运动的旋转运动，以将基座2的开口21的内周边缘和配合构件3的外周边缘彼此配合; 保持构件5，其插入从安装构件3延伸的轴部31，并且设置成能够抵接在基座2上; 以及紧固构件6，其被拧入到装配构件3的轴部31上，并且通过与保持构件5抵接在基座2上的紧固而将配合构件3保持在轴向移动的位置。版权所有：（C ）2012，JPO＆INPIT

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