CN108150751A - 市政排污管道 - Google Patents

市政排污管道 Download PDF

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Publication number
CN108150751A
CN108150751A CN201711176736.4A CN201711176736A CN108150751A CN 108150751 A CN108150751 A CN 108150751A CN 201711176736 A CN201711176736 A CN 201711176736A CN 108150751 A CN108150751 A CN 108150751A
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slot
wall
plug
annular groove
water
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CN108150751B (zh
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李国贤
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Wenzhou Wei Guo Construction Co Ltd
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Wenzhou Wei Guo Construction Co Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3408—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/001—Joining in special atmospheres
    • B29C66/0012—Joining in special atmospheres characterised by the type of environment
    • B29C66/0016—Liquid environments, i.e. the parts to be joined being submerged in a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/725—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs
    • B29C66/7252—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled
    • B29C66/72523—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled multi-channelled or multi-tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)

Abstract

本发明公开了一种市政排污管道，其优势在于热熔拼接的时候更加方便。一种市政排污管道，包括多根HDPE双壁波纹管，所述HDPE双壁波纹管的两端分别设有插头和插槽，其特征是：所述插槽的内壁上设有环形槽，所述环形槽内设有生石灰粉，所述环形槽的表面设有密闭环形槽的水溶性薄膜，所述HDPE双壁波纹管在插槽端的外壁上设有与插槽相连通的通孔。在多根HDPE双壁波纹管通过插头和插槽相互插接的方式连接在一起之后，向插头和插槽的间隙注水，水溶性薄膜在经过一端时间之后被水溶解，这时候水直接和生石灰粉接触，产生大量的热量使得插头的外壁和插槽的内壁部分熔化连接在一起形成密封面。

Description

市政排污管道
技术领域
本发明涉及一种管道，特别涉及一种市政排污管道。
背景技术
现在的市政排污管道通常选用HDPE双壁波纹管拼接的形式。为了避免HDPE双壁波纹管的拼接处漏水，通常是采用热熔的方式将两根HDPE双壁波纹管的套接处熔接在一起。
现在采用的热熔方式是通过在HDPE双壁波纹管的套接处预先绕上加热丝，然后通过给加热丝通电加热。但是这种方法操作比较复杂，需要准备电源在每两根HDPE双壁波纹管连接时供电加热。
发明内容
本发明的目的是提供一种市政排污管道，其优势在于热熔拼接的时候更加方便。
本发明的上述技术目的是通过以下技术方案得以实现的：一种市政排污管道，包括多根HDPE双壁波纹管，所述HDPE双壁波纹管的两端分别设有插头和插槽，所述插槽的内壁上设有环形槽，所述环形槽内设有生石灰粉，所述环形槽的表面设有密闭环形槽的水溶性薄膜，所述HDPE双壁波纹管在插槽端的外壁上设有与插槽相连通的通孔。
通过采用上述技术方案，通过水溶性薄膜来配合储存生石灰粉。在多根HDPE双壁波纹管通过插头和插槽相互插接的方式连接在一起之后，向插头和插槽的间隙注水，水溶性薄膜在经过一端时间之后被水溶解，这时候水直接和生石灰粉接触，产生大量的热量使得插头的外壁和插槽的内壁部分熔化连接在一起形成密封面。
本发明进一步设置为：所述插头的外侧设有隔热支撑环，所述隔热支撑环与插头之间贴合密封。
通过采用上述技术方案，在插头的外侧设置隔热支撑环，使得加热的时候插头的部分不会被熔化而影响HDPE双壁波纹管内输水通道的形状。
本发明进一步设置为：所述环形槽的底部设有环形金属圈。
通过采用上述技术方案，设置环形金属圈来避免集中放热而导致插槽的外壁直接被溶穿，使得热量可以通过环形金属圈扩散出去。
本发明进一步设置为：所述环形金属圈的宽度大于环形槽的宽度，所述环形金属圈的两端嵌入环形槽侧壁中。
通过采用上述技术方案，设置环形金属圈的宽度大于环形槽的宽度来增加轴向方向上的熔化长度，使得熔化后冷却粘结形成的密封面积更大，起到更好的密封效果。
本发明进一步设置为：所述插槽的内径大于隔热支撑环的外径，所述插槽内侧分别成型有靠近HDPE双壁波纹管端口的第一环形密封凸起和远离HDPE双壁波纹管端口的第二环形密封凸起，所述第一环形密封凸起和第二环形密封凸起的最小内径均小于隔热支撑环的外径，所述通孔和插槽连通处位于环形槽和第二环形密封凸起之间。
通过采用上述技术方案，由于水溶性薄膜在水中溶解需要一段时间进行，通过第一环形密封凸起和第二环形密封凸起与隔热支撑环的外壁之间配合形成密封，使得通过通孔注入隔热支撑环和插槽之间的水不会流失，避免在水溶性薄膜溶解过程中持续性注水而导致水资源浪费。
本发明进一步设置为：所述隔热支撑环的外侧设有在***顶到插槽底部时正对环形槽中部位置的隔水圈，所述隔水圈与水溶性薄膜抵接密封。
通过采用上述技术方案，通过隔水圈使得水仅能流到隔水圈和第一环形密封凸起之间的位置，隔水圈和第二环形密封凸起之间的位置处于干燥的状态，在隔水圈和第二环形密封凸起之间的插槽内壁熔化的时候就可以顺利的与隔热支撑环连接在一起。
本发明进一步设置为：所述通孔共有四个且在双壁波纹管周向上均布，每个所述通孔内均设有用于密封通孔的堵头。
通过采用上述技术方案，设置四个周向均布的通孔来方便注水。将多根HDPE双壁波纹管通过各自的插头和插槽依次配合插接，之后将位于HDPE双壁波纹管侧面的其中一个堵头和位于最高处的堵头拔出，通过侧面的通孔向隔水圈和第一环形密封凸起之间的间隙中注水，直到上侧的通孔内有水溢出的时候意味着已经注满水。
本发明进一步设置为：所述通孔的轴心线与插槽的内壁相切。
通过采用上述技术方案，设置通孔的轴心线和插槽的内壁相切来使得HDPE双壁波纹管摆放的位置状态不是有一个通孔正好朝上的状态时，只要通孔的两端有一端处于较高的位置，就可以尽可能高的维持水位，使得生石灰粉可以与水充分接触，不会上端上侧的插槽内壁温度较低难以熔化的情况。
本发明进一步设置为：所述堵头的外壁成型有环形的锯齿状凸起，所述堵头位于通孔外的一端成型有环形拉手。
通过采用上述技术方案，在堵头的外侧设置锯齿状凸起使得堵头能够与通孔内壁紧密贴合密封，而环形拉手则能便于将堵头拔出。
综上所述，本发明的有益效果为：
1、设置水溶性薄膜来配合储存生石灰粉。在多根HDPE双壁波纹管通过插头和插槽相互插接的方式连接在一起之后，向插头和插槽的间隙注水，水溶性薄膜在经过一端时间之后被水溶解，这时候水直接和生石灰粉接触，产生大量的热量使得插头的外壁和插槽的内壁部分熔化连接在一起形成密封面；
2、设置第一环形密封凸起和第二环形密封凸起与隔热支撑环的外壁之间配合形成密封，使得通过通孔注入隔热支撑环和插槽之间的水不会流失，避免在水溶性薄膜溶解过程中持续性注水而导致水资源浪费。
附图说明
图1是实施例轴向的剖视示意图；
图2是图1中A处的放大图；
图3是实施例径向的剖视示意图；
图4是图3中B处的放大图。
附图标记：1、HDPE双壁波纹管；2、插头；3、插槽；4、环形槽；5、水溶性薄膜；6、第一环形密封凸起；7、第二环形密封凸起；8、通孔；9、堵头；10、锯齿状凸起；11、环形拉手；12、环形金属圈；13、隔热支撑环；14、隔水圈。
具体实施方式
以下结合附图对本发明作进一步详细说明。
如图1和图2所示，一种市政排污管道，包括多根HDPE双壁波纹管1，HDPE双壁波纹管1的两端分别成型有插头2和插槽3，插槽3的内壁上开有环形槽4，环形槽4内填有生石灰粉，在环形槽4的表面附上密闭环形槽4的水溶性薄膜5。
如图1和图2所示，在多根HDPE双壁波纹管1通过插头2和插槽3相互插接的方式连接在一起之后，向插头2和插槽3的间隙注水，水溶性薄膜5在经过一端时间之后被水溶解，这时候水直接和生石灰粉接触，产生大量的热量使得插头2的外壁和插槽3的内壁部分熔化连接在一起形成密封面。
如图2和图4所示，插槽3的内侧靠近HDPE双壁波纹管1端口的位置成型有第一环形密封凸起6，插槽3内侧远离HDPE双壁波纹管1端口的位置成型有第二环形密封凸起7，环形槽4位于第一环形密封凸起6和第二环形密封凸起7之间的位置。HDPE双壁波纹管1在插槽3端的外壁上开有通孔8连通到插槽3内对于环形槽4和第一环形密封凸起6之间的位置，方便在插头2***插槽3内后向插槽3内注水，通孔8的轴心线与插槽3的内壁相切。通孔8共有四个且在HDPE双壁波纹管1的周向上均布，每个通孔8内都塞有堵头9，堵头9的表面成型有环形的锯齿状凸起10来与通孔8的内壁紧密配合达到密封，堵头9位于通孔8外的一端成型有环形拉手11来方便拉出堵头9。
如图2所示，环形槽4的底部安装有环形金属圈12，环形金属圈12的环形金属圈12的宽度大于环形槽4的宽度且两端嵌入环形槽4侧壁中来使得环形金属圈12可以在避免外壁被熔穿的同时增加轴向方向上的熔化长度，使得熔化后冷却粘结形成的密封面积更大，起到更好的密封效果。
如图2所示，插头2上套有隔热支撑环13，隔热支撑环13和插头2之间紧密贴合密封。隔热支撑环13的外径小于插槽3的内径且小于第一环形密封凸起6和第二环形密封凸起7的内径。插头2***插槽3后，隔热支撑环13的外侧和第一环形密封凸起6、第二环形密封凸起7之间配合密封。插头2和插槽3之间配合形成较小的间隙用于通水。隔热支撑环13的外侧成型有在插槽3内插到底时正对环形槽4中部的隔水圈14，隔水圈14与水溶性薄膜5抵接形成密封。
具体使用过程：将多根HDPE双壁波纹管1通过各自的插头2和插槽3依次配合插接，之后将位于HDPE双壁波纹管1侧面的其中一个堵头9和位于最高处的堵头9拔出，通过侧面的通孔8向隔水圈14和第一环形密封凸起6之间的间隙中注水，直到上侧的通孔8内有水溢出的时候停止注水。水溶性薄膜5缓慢溶解，直到水与生石灰粉接触的时候产生放热反应释放大量的热能，使得插槽3的内壁加热熔化，位于隔水圈14和第二环形密封凸起7之间熔化的插槽3内壁和隔热支撑环13连接在一起，形成密封面。反应过程中产生的水蒸气可以通过上侧的通孔8排放出去。
本具体实施例仅仅是对本发明的解释，其并不是对本发明的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本发明的权利要求范围内都受到专利法的保护。

Claims (9)

1.一种市政排污管道，包括多根HDPE双壁波纹管(1)，所述HDPE双壁波纹管(1)的两端分别设有插头(2)和插槽(3)，其特征是：所述插槽(3)的内壁上设有环形槽(4)，所述环形槽(4)内设有生石灰粉，所述环形槽(4)的表面设有密闭环形槽(4)的水溶性薄膜(5)，所述HDPE双壁波纹管(1)在插槽(3)端的外壁上设有与插槽(3)相连通的通孔(8)。
2.根据权利要求1所述的市政排污管道，其特征是：所述插头(2)的外侧设有隔热支撑环(13)，所述隔热支撑环(13)与插头(2)之间贴合密封。
3.根据权利要求2所述的市政排污管道，其特征是：所述环形槽(4)的底部设有环形金属圈(12)。
4.根据权利要求3所述的市政排污管道，其特征是：所述环形金属圈(12)的宽度大于环形槽(4)的宽度，所述环形金属圈(12)的两端嵌入环形槽(4)侧壁中。
5.根据权利要求2所述的市政排污管道，其特征是：所述插槽(3)的内径大于隔热支撑环(13)的外径，所述插槽(3)内侧分别成型有靠近HDPE双壁波纹管(1)端口的第一环形密封凸起(6)和远离HDPE双壁波纹管(1)端口的第二环形密封凸起(7)，所述第一环形密封凸起(6)和第二环形密封凸起(7)的最小内径均小于隔热支撑环(13)的外径，所述通孔(8)和插槽(3)连通处位于环形槽(4)和第二环形密封凸起(7)之间。
6.根据权利要求5所述的市政排污管道，其特征是：所述隔热支撑环(13)的外侧设有在***顶到插槽(3)底部时正对环形槽(4)中部位置的隔水圈(14)，所述隔水圈(14)与水溶性薄膜(5)抵接密封。
7.根据权利要求6所述的市政排污管道，其特征是：所述通孔(8)共有四个且在双壁波纹管周向上均布，每个所述通孔(8)内均设有用于密封通孔(8)的堵头(9)。
8.根据权利要求7所述的市政排污管道，其特征是：所述通孔(8)的轴心线与插槽(3)的内壁相切。
9.根据权利要求8所述的市政排污管道，其特征是：所述堵头(9)的外壁成型有环形的锯齿状凸起(10)，所述堵头(9)位于通孔(8)外的一端成型有环形拉手(11)。
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