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JP2005098406A Flow maintaining construction method for changing aperture of pipe joint 有权
标题翻译：流量维持改变管道接头的方法
公开(公告)号：JP2005098406A
公开(公告)日：2005-04-14
申请号：JP2003333616
申请日：2003-09-25
申请人： Waterworks Technology Development Organization Co Ltd , 株式会社水道技術開発機構
发明人： OGATA TADAHIKO , KITAMURA KO , MOTOI KENICHI , MORI MITSUHIRO
IPC分类号： F16L41/06 , F16L1/024 , F16L55/00
摘要： PROBLEM TO BE SOLVED: To conduct a branch aperture increasing construction, while maintaining flow, reducing construction cost, and shortening construction period. SOLUTION: This construction method is for changing aperture of a through hole in a fluid tube 1, a branch tube part of a joint main body, and an opening valve to be larger while maintaining flow of fluid in the fluid tube 1. An elastic closing body 12 in a hole closing tool B is changed into a diameter-enlarged swollen state to seal a small diameter through hole in the fluid tube 1, and a case for the hole closing tool B, the opening valve, and the joint main body are removed in that state. Next, a joint main body E of large diameter for replacement is installed as part of the hole closing tool B is inserted into a branch tube part 7, and an opening valve 8 of large diameter for replacement is installed onto the branch tube part as part of the hole closing tool B is inserted. The elastic closing body 12 is changed into a diameter-reduced contracted state, and the hole closing tool B is removed from the opening valve 8 for replacement. With a rotary cutter installed on the opening valve 8 for replacement, a through hole of larger aperture is formed at a circumferential edge of the small diameter through hole, and a boring device is removed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在保持流量，降低施工成本，缩短施工周期的同时，进行分支孔径增加施工。解决方案：这种施工方法是用于改变流体管1中的通孔的孔径，接头主体的分支管部分和开口阀的孔径，同时保持流体管1中的流体流动。孔封闭工具B中的弹性封闭体12变成直径扩大的膨胀状态，以密封流体管1中的小直径通孔，以及用于封闭工具B，开启阀和关节的壳体主体在那个状态被移除。接下来，安装用于更换的大直径的接头主体E，因为孔闭合工具B的一部分插入到分支管部分7中，并且用于更换的大直径的开启阀8作为部件安装在分支管部分上插入孔闭合工具B。弹性封闭体12变成缩径收缩状态，从打开阀8取出封孔工具B以进行更换。通过将旋转刀具安装在打开阀8上以便更换，在小直径通孔的圆周边缘处形成较大孔径的通孔，并且去除钻孔装置。版权所有（C）2005，JPO＆NCIPI

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