Installation and maintenance of PE threaded pipe
使用安装前 要 检查 ，看是否有缺损破漏的状况 ，如发现 PE穿线管材 破损裂口、变形等缺陷 等情况 ， 要 及时 更换 ： 检查井与管道连接 宜采用柔性填料密封的柔性接头，具体构造按设计要求进行。 PE threaded pipe should be inspected before use and installation to see if there is any defect or leakage . If it is found that the PE threaded pipe is damaged, cracked, deformed, etc. , it should be replaced in time : the connection between the inspection well and the pipeline should be a flexible joint sealed with flexible packing , The specific structure according to the design requirements.
要 注意 ， PE穿线管材的 沟槽槽底净宽宜按 PE穿线管材 外径加 0.6m采用；沟槽开挖时 要 做好排水措施，防止槽底受水浸泡； )管道基础必须采用砂砾垫层，对一般土质地基，厚度为0.1m；对软土地基，厚度不小于0.2m，具体做法按设计要求；基础 一定 夯实，表面要平整。 When digging trenches and making foundations, pay attention to the clear width of the bottom of the grooves of PE threaded pipes , which should be adopted according to the outer diameter of PE threaded pipes plus 0.6m; drainage measures should be taken to prevent the bottom of the grooves from being soaked when excavating the grooves ; ) The pipeline foundation must be made of gravel cushion. For general soil foundation, the thickness is 0.1m; for soft soil foundation, the thickness is not less than 0.2m. The specific method is according to the design requirements; the foundation must be compacted and the surface must be flat. 要 预留凹槽以便接口操作。 The groove of the pipe foundation should be reserved for the interface operation. PE穿线管材 外径的 1.1倍。 The groove length should be 0.4m-0.6m, the depth should be 0.05m-0.1m, and the width should be 1.1 times the outer diameter of the PE threaded pipe . When the depth of the lower pipe groove is small, the pipe can be manually lifted into the groove. When the groove depth is greater than 3m, a non-metallic rope slide pipe can be used to enter the groove.
接口作业时， 橡胶圈安装位置 要 在插口第二与第三波纹之间槽内，安装密封圈的数量视设计要求而定，当采用两只密封圈时建议两密封圈之间隔一个波纹；接口前 要 先将承口插口内外表面清理干净，在插口套入密封圈，并在承口内工作面和橡胶圈表面涂上润滑剂（一般用肥皂水即可），插入方向为水流方向 ； When connecting PE threaded pipe , the installation position of the rubber ring should be in the groove between the second and third corrugations of the socket. The number of sealing rings to be installed depends on the design requirements. When two sealing rings are used, the interval between the two sealing rings is recommended. One ripple; clean the inner and outer surface of the socket before the interface , put a sealing ring on the socket, and apply lubricant (usually soapy water) to the working surface of the socket and the surface of the rubber ring. The direction of insertion is water flow. Direction
回填土层 ；承插口管安装 要 将插口顺水流方向，承口逆水流方向，由下游向上游依次安装； PE穿线管材要 直线敷设，相邻两节管道轴线的允许转角一般不得大于 2度。 After the interface is completed, backfill the soil layer ; the installation of the socket pipe must install the socket in the direction of the water flow, and the socket counter the water flow direction, and install the PE pipe from the downstream to the upstream; More than 2 degrees. In order to prevent the pipeline axis position that has been arranged when the interface is closed, pipe stabilization measures must be adopted. The woven bag can be filled with sand and sealed and pressed against the top of the arranged pipeline. The quantity varies depending on the diameter of the pipe. 要 复核管底深度和轴线，使其符合要求，如出现位移、悬浮、拔口现象， 要 返工处理。 After the pipe connection, check the depth and axis of the pipe bottom to make it meet the requirements. If displacement, suspension, or pullout occurs, it must be reworked.
要 注意腋角部位 ，也就是 2d角范围内先 要 用中砂、粗砂填实；基础部位开始到管顶槽以上 0.7m范围内，必须采用人工回填；管顶0.7m以上可采用机械从管道轴线两侧，同时回填；槽边各部位所用回填土质，最佳压实度（%） 要 按设计要求或按 CECS122:2001技术规程要求。 When backfilling soil, pay attention to the axillary corners , that is , first fill with medium sand and coarse sand within the 2d angle range ; the base part must be backfilled manually within 0.7m above the pipe roof groove ; manual backfill can be used above 0.7m Use machinery to backfill from both sides of the pipeline axis at the same time; the optimum compaction degree (%) of the backfill soil used at each part of the groove should be according to the design requirements or CECS122: 2001 technical regulations.
PE穿线管材的作用。 In this way, the role of PE threading pipe can be smoothly exerted in strict accordance with regulations .