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1. 发明授权

US4127141A Method and apparatus for stopping fluid escape from pipe mains 失效
标题翻译：阻止流体从管道中逸出的方法和装置
公开(公告)号：US4127141A
公开(公告)日：1978-11-28
申请号：US801650
申请日：1977-05-31
申请人： Alfred D. Ledonne , George A. Scheuering
发明人： Alfred D. Ledonne , George A. Scheuering
IPC分类号： F16L55/124 , F16L55/12 , F16K43/00
CPC分类号： F16L55/124 , Y10T137/0475 , Y10T137/6123 , Y10T137/6133
摘要： A method and apparatus are provided for sealing the opening in the sidewall of a fluid carrying main during replacement of a service tee or the like comprising a gate valve, means on end of said gate valve for engaging the end of a service tee remote from the main, a plug wrench having an elongate stem adapted to pass through said gate valve in the open position, closure means on the other end of said gate valve having a passage adapted to sealingly and slidably pass said stem through the gate valve to remove a screw plug in the end of the service tee remote from the main and to receive the screw plug and wrench above the gate valve while the gate valve is closed, a stopper rod interchangeable with the elongate stem of the plug wrench in the passage in the closure means, said stopper rod having an axial passage, a resilient elongate member abutting one end of said stopper rod, an intermediate hollow shaft threaded in the hollow passage of the stopper rod and extending through the resilient member to expand the plug radially on relative rotation with respect to the stopper rod, a threaded jack shaft extending through and threadingly engaging the hollow intermediate shaft and through the resilient member whereby on relative rotation of the jack member and the stopper rod, the expanded resilient member is raised into engagement with the wall of the main around the opening therein to seal the same.
摘要翻译：提供了一种方法和装置，用于在更换包括闸阀的维修三通等的更换用于密封流体承载主体的侧壁中的开口处密封，在所述闸阀的端部上的装置用于接合远离主要是具有细长杆的插头扳手，其适于在打开位置通过所述闸阀，所述闸阀的另一端上的封闭装置具有通道，该通道适于通过所述闸阀密封地且可滑动地通过所述杆以移除螺钉在主阀门远离的情况下将服务三通的末端插入，并且在闸阀关闭时接收闸阀上方的螺塞和扳手，在闭合装置的通道中可与插头扳手的细长杆互换的止动杆所述止动杆具有轴向通道，抵靠所述止动杆的一端的弹性细长构件，螺纹连接在所述止动杆的中空通道中并延伸穿过所述止动杆的中间空心轴从而在插头构件和止动杆的相对旋转之间径向延伸插头，螺栓千斤顶轴延伸穿过中空中间轴并通过弹性构件螺纹接合，弹性构件被升高成与主体的围绕其开口的壁相接合以将其密封。

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