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    • 5. 发明公开
    • METHOD AND STRUCTURE FOR LAYING COMMUNICATION CABLE IN UNDERGROUND LINE, AND MEMBERS USED FOR LAYING
    • VERFAHREN ZUM VERLEGEN VON FERNMELDEKABELN IN UNTERIRDISCHE LEITUNGEN
    • EP1309054A1
    • 2003-05-07
    • EP01954478.2
    • 2001-08-07
    • Ashimori Industry Co., Ltd.SANKI ENGINEERING CO. LTD.Seto, Ichiro
    • SETO, IchiroTSUCHIYA, FumiakiYAGI, IsaburoAZUMA, KatsuhikoKISHIBE, NobuyasuASO, KojiUEDA, Yasuhiro
    • H02G1/06H02G9/00G02B6/00
    • H02G1/06G02B6/502G02B6/508H02G1/08H02G9/06
    • A laying method for laying communication cables (16) is provided which allows to lay optical fiber cables (20) in an underground pipeline such as a sewage pipe neither placing direct tension nor allowing slack on them, and for a main pipe in which a plurality of optical fiber cables (20) are to be laid, the method also allows to lay optical fiber cables (20) in the upper space of inside the pipeline and to obviate the need of an expensive robot for the laying operation. In the proposed laying method, a high-strength low-elongation tension member is disposed to be slidable in the lengthwise direction along each optical fiber cable (20, 21, 22), and the tension members (25, 26, 27) are drawn into the underground pipeline (1) to tension the trunk tension member (25) thereby stretching the trunk tension member (25) substantially straight in the underground pipeline (1), and thus the optical fiber cables (20, 21, 22) are laid in the upper space of inside the underground pipeline (1). Also the branch tension member (26, 27) is tensioned in the branch pipe (4, 5) to lay the optical fiber cables (21, 22) in the branch pipe without allowing slack.
    • 提供铺设通信电缆(16)的铺设方法,其可以将光纤电缆(20)放置在诸如污水管的地下管线中,既不施加直接张力也不允许松弛,并且对于主管,其中多个 要铺设光纤电缆(20),该方法还允许将光纤电缆(20)放置在管道内部的上部空间中,并且不需要用于铺设操作的昂贵的机器人。 在所提出的铺设方法中,高强度低伸长张力构件设置成沿着每根光纤缆线(20,21,22)在长度方向上滑动,并且拉伸构件(25,26,27)被拉伸 进入地下管线(1)以张紧躯干张力构件(25),从而在地下管线(1)中基本上直线地拉伸主干张紧构件(25),从而铺设光纤电缆(20,21,22) 在地下管线(1)内的上部空间。 此外,分支张紧构件(26,27)在分支管(4,5)中被张紧,以将光纤电缆(21,22)布置在分支管中,而不会松弛。
    • 8. 发明公开
    • LINESTOPPING SYSTEM
    • 截流管线
    • EP0861399A4
    • 1999-01-07
    • EP96931686
    • 1996-10-04
    • WATER CORP
    • BROWN STEPHEN REGINALD
    • F16L55/124F16L55/134G02B6/50F16L55/18
    • F16L55/134F16L55/124G02B6/502Y10T137/4259Y10T137/87338
    • A linestopping system for pipes includes first and second linestopping means (10a, 10b), each linestopping means including an inflatable plug (50), an inflation means (90) and an insertion means (34) and first and second branch pipe supports (20) each having an apertured flange (22) with a pipe section (24) mounted thereon at an acute angle, each pipe section containing a valve (28). In use, the pipe supports are disposed on a pipe in spaced apart locations with the pipe sections facing in opposite directions such that upon apertures being cut in the pipe at the pipe supports the inflatable plugs of respective linestopping means are inserted by the insertion means through the apertures in the pipe and subsequently inflated by the inflation means so as to seal off a section of the pipe. Each insertion means includes a plurality of sets of hydraulic clamps, a first set of clamps being fixed relative to the insertion means and a second sets of clamps being movable relative to the insertion means, such that the first and second sets are relatively moveable so as to cause insertion of the respective inflatable plug into the pipe. A bypass pipe (102) extends between the first and second linestopping means to allow fluid flow to be maintained when the section of the pipe is sealed off.
    • 10. 发明公开
    • Pipeline system
    • Rohrleitungssystem。
    • EP0294243A2
    • 1988-12-07
    • EP88305148.4
    • 1988-06-06
    • NORTHERN TELECOM LIMITED
    • Grocott, Geoffrey JosephBaskett, Ralph Edward John
    • F17D5/00H02G1/08F16L55/00
    • F17D5/00G02B6/4464G02B6/502H02G1/08H02G1/086
    • A method of deploying a cable or other line (34) in a fluid transportation pipeline (10) whilst in normal operation full of and transporting a fluid (12) under a positive pressure. A collapsible centralising device (62,64) is attached to the leading end of the cable (34) and is then fed in a collapsed state into the pipeline (10) via a first fluid sealing means (30) at the cable entry position (14). That device (62,64) maintains the cable end (34) centralised in the pipeline cross section whilst the cable (34) is fed into the pipeline (10). Magnetic sensing means (68,74,76) disposed near the cable exit position sense the presence of the cable end (34) and control the cable infeed so as to position the cable end (34) in a predetermined cable retrieval position. A tubular lance (54) is fed into the pipeline (10) through a second fluid sealing means (32) disposed at the cable exit position (16), and a grab (56) housed in the nozzle of the lance (54) is ejected to engage and capture part of the centralising device (62,64) and cable end (34), whereafter the grab (56) closes on being drawn back into the lance (54). The lance (54) is then withdrawn through the second fluid sealing means (32) so as to draw with it the grab (56) and the captured centralising device (62,64) and cable end (34).
    • 一种在正常操作中在正压力下充满流体(12)并传送流体(12)的情况下,将电缆或其它管线(34)部署在流体输送管线(10)中的方法。 可收缩的集中装置(62,64)附接到电缆(34)的前端,然后经由处于电缆入口位置处的第一流体密封装置(30)以折叠状态进入管道(10) 14)。 该装置(62,64)将电缆端部(34)集中在管道横截面中,同时电缆(34)被馈送到管道(10)中。 设置在电缆出口位置附近的磁感测装置(68,74,76)感测电缆端部(34)的存在并控制电缆进给,以将电缆端部(34)定位在预定的电缆取回位置。 管状喷枪(54)通过布置在电缆出口位置(16)处的第二流体密封装置(32)进入管道(10),并且容纳在喷枪(54)的喷嘴中的抓斗(56)是 弹出以接合和捕获中央集中装置(62,64)和电缆端部(34)的一部分,此后,抓斗(56)被拉回到喷枪(54)中时关闭。 然后,喷枪(54)通过第二流体密封装置(32)被抽出,以便与其一起牵引(56)和捕获的集中装置(62,64)和电缆端部(34)。