公开(公告)号：US6058978A

公开(公告)日：2000-05-09

申请号：US682389

申请日：1996-07-17

申请人： Stephen Paletta ,  Brian George ,  David A. Fletcher

发明人： Stephen Paletta ,  Brian George ,  David A. Fletcher

IPC分类号： B29C63/34 ,  F16L55/165 ,  F16L55/162

CPC分类号： B29C63/343 ,  F16L55/165 ,  F16L55/1654 ,  Y10S138/07

摘要： A method and apparatus for relining, repairing or reconstructing existing infrastructure pipeline systems that are new, structurally deficient or experiencing an excessive amount of exfiltration or infiltration, or converting new or damaged pipelines into dual-containment pipelines. A plurality of stock, high density polyethylene lining pipes having a cylindrical cross-section with a diameter up to 36 inches and lengths of 40-50 feet are joined together to a job specific length. The lining pipe is then heated to its flex temperature and gradually deformed to a reduced diameter. At the job site, the deformed lining pipe is inserted into the existing pipe and a controlled, pressurized environment is created therein for a period of time dependent on the pipe's length. Pressurized steam is first inserted to provide heat and internal pressure to expand the pipe. Then, compressed air is inserted to cool the pipe while maintaining the internal pressure to complete the expansion and set the pipe. When converting to dual-containment pipelines, the deformed pipe will have a plurality of spacers attached thereon such that the existing and deformed pipes are axially aligned and have an annular space therebetween.

摘要翻译： 一种用于重新修复或重建现有基础设施管道系统的方法和装置，这些管道系统是新的，结构上不足的或经历过量的渗透或渗透，或将新的或损坏的管道转换为双重遏制管道。 多个具有直径高达36英寸且长度为40-50英尺的圆柱形横截面的高密度聚乙烯内衬管道连接在一起，具有特定工作长度。 然后将衬管加热至其柔性温度并逐渐变形至减小的直径。 在作业现场，将变形的衬管插入现有的管道中，并在其中产生受控制的加压环境，持续一段时间取决于管道的长度。 首先插入加压蒸汽以提供热量和内部压力以使管道膨胀。 然后，插入压缩空气以冷却管道，同时保持内部压力以完成膨胀并设置管道。 当转换成双重收容管道时​​，变形的管道将具有附接在其上的多个间隔件，使得现有和变形的管道轴向对准并且在其间具有环形空间。