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    • 5. 发明申请
    • IMPROVED ELECTROFUSION FITTINGS AND METHODS
    • 改进的电子配件和方法
    • WO2013136062A1
    • 2013-09-19
    • PCT/GB2013/050606
    • 2013-03-12
    • PIONEER LINING TECHNOLOGY LIMITED
    • BARNES, Stephen
    • B29C65/34B29C65/82F16L47/03G01M3/28
    • B29C65/3432B29C65/3468B29C65/8246B29C66/1222B29C66/1224B29C66/1282B29C66/12841B29C66/12842B29C66/1286B29C66/14B29C66/232B29C66/5221B29C66/52291B29C66/52293B29C66/52296B29C66/5346B29C66/612B29C66/72321B29C66/73921F16L13/0227F16L13/0263F16L47/03G01M3/2853
    • Improvements to electrofusion fittings that enable the integrity of a weld between an electrofusion fitting and a pipe lining (or stand¬ alone pipe) to be tested in the field, and corresponding methods of installation and testing. An electrofusion fitting (201) for joining sections of lined pipe (203a, 203b) has heating elements (207a) configured to create at least one weld between the electrofusion fitting (201) and a pipe lining (205a), and a channel (211) provides fluid access to a test region (215a) between the electrofusion fitting (201) and the pipe lining (205a) to allow leak testing to be performed. The channel (211) may be provided through the fitting (201) itself, or alternatively through the pipe lining. Methods of fabricating or laying pipeline may incorporate use of the improved fitting whether using length-by-length construction methods or joining subsequent reel-laid or towed-in pipe lengths. A closed bevel welding approach, permitting high speed automatic pipeline welding processes to be employed, is described in which the closed bevel is drilled through to allow access there through for providing leak testing and/or electrical power to the heating elements.
    • 电熔配件的改进,使电熔配件与现场测试的管衬(或独立管)之间的焊接完整性,以及相应的安装和测试方法。 用于连接内衬管(203a,203b)的部分的电熔接头(201)具有加热元件(207a),其配置成在电熔接配件(201)和管衬(205a)之间产生至少一个焊缝,以及通道(211a) )提供流体进入电融合配件(201)和管衬(205a)之间的测试区域(215a),以允许执行泄漏测试。 通道(211)可以通过配件(201)本身提供,或者替代地通过管衬套提供。 制造或铺设管道的方法可以包括使用改进的配件,无论是使用长度施工方法还是连接随后的卷绕或拖曳的管道长度。 描述了允许使用高速自动管线焊接工艺的闭合斜面焊接方法,其中钻出闭合斜面以允许通过该斜面以便向加热元件提供泄漏测试和/或电力。