WO2011072562A1 - 一种塑钢缠绕管的加强方法及钢带增强复合带材 - Google Patents

一种塑钢缠绕管的加强方法及钢带增强复合带材 Download PDF

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Publication number
WO2011072562A1
WO2011072562A1 PCT/CN2010/078786 CN2010078786W WO2011072562A1 WO 2011072562 A1 WO2011072562 A1 WO 2011072562A1 CN 2010078786 W CN2010078786 W CN 2010078786W WO 2011072562 A1 WO2011072562 A1 WO 2011072562A1
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Prior art keywords
strip
steel
reinforcing
plastic
substrate
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PCT/CN2010/078786
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English (en)
French (fr)
Inventor
郑能欢
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华瀚科技有限公司
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Publication of WO2011072562A1 publication Critical patent/WO2011072562A1/zh

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    • 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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement

Definitions

  • the invention relates to the field of plastic steel winding pipes, in particular to a reinforcing method and a strip of plastic steel winding pipes. Background technique
  • Buried drain pipes and buried cable protection pipes for electric power and communication are usually made of plastic spiral wound pipes for the convenience of production process.
  • such plastic wound tubes In order to resist soil pressure during burial and to save material, such plastic wound tubes usually use structural tube walls. That is, reinforcing ribs are formed on the pipe wall, and the steel ribs are reinforced in the reinforcing ribs to form a plastic steel spirally wound pipe, which further improves material pressure resistance and further saves materials and reduces production cost.
  • FIG. 1 and FIG. 2 disclose a steel-wound structural wall pipe.
  • the pipe 2 is composed of an inner tube wall to form a closed smooth fluid passage.
  • the outer surface of the pipe wall is a spiral-wrapped steel belt reinforced solid straight rib structure.
  • the steel rib of the pipe wall is much larger than the elastic modulus of the plastic, the steel rib is subjected to most of the load in the circumferential deformation of the pipe.
  • the plastic tube wall is relieved by the stress and will relax over time so that the steel ribs are substantially all loaded with the load on the tube. Therefore, when the same compressive strength is achieved, as long as a higher strip height to thickness ratio is used, the utilization of the material can be improved and the material cost of the tube can be minimized.
  • the problem to be solved by the present invention is to provide a reinforcing method for a steel-steel-wound pipe which is easy to produce, has excellent workability and has excellent workability, and has high compressive strength, and a steel strip reinforced composite strip.
  • the steel-wound tube is wound by a steel strip reinforced composite strip
  • the steel strip reinforced composite strip comprises a strip body
  • the strip body comprises a substrate.
  • the substrate is provided with at least one reinforcing rib perpendicular to the substrate and extending along the length direction of the strip
  • the substrate material is plastic
  • the reinforcing rib is preferably provided with ribs
  • the reinforcing rib fin material is preferably a steel strip
  • the ribs are covered with plastic, and the plastic may be polyethylene, polyvinyl chloride, and other suitable plastic materials.
  • the lap joints of the two sides of the material and the adjacent strips are respectively an extension platform and an extension boss. When the lap joint is joined, the protruding platform of the side of the strip is joined with the protruding boss of the adjacent strip.
  • the joint faces are welded or bonded by means of a molten extrudate in between.
  • the reinforcing ribs are arranged in groups of 2 or 3, and the reinforcing ribs are disposed at a position that does not affect the bending of the strip when the strip is wound into a tube, and does not change the tube length of the unit length.
  • the compressive strength does not affect the fixed length cutting of the pipe, it is preferable to arrange the two or three pieces in a tightly spaced optimal outer spacing defined by the specific production equipment, without changing the material cost of the original pipe.
  • the reinforcing ribs with the height and thickness ratio of the best larger steel strip can be arranged in a tightly arranged group, and the joints with the pipe wall can support each other, thereby increasing the stability of the reinforcing ribs and eliminating The risk of breakage or deformation of the joint and the rib itself, and further use of the best large strip height and Thickness ratio.
  • the spacing between the different sets of reinforcing ribs is increased, and the longitudinal flexibility of the pipeline is also increased, thereby better eliminating the risk of pipeline failure caused by uneven settlement of the soil.
  • the fixed length cutting of the pipe can be carried out by conventional first stripping steel. With the method of cutting the pipe again, and because the reinforcing ribs are arranged in a tightly arranged manner, the spiral pitch is increased, and the length of the peeling section can be relatively reduced, thereby reducing the influence on the strength of the pipe joint.
  • the reinforcing rib end portion and/or the reinforcing rib and the pipe wall joint portion are provided with one or more round section reinforcing bodies.
  • the outer diameter and the number of the round section reinforcements are not affected by the bending of the strip when the material is wound into a tube, the pipe cost is not significantly increased, and the stability of the joint between the reinforcing rib and the tube wall is ensured.
  • This type of reinforcement requires less plastic material and is more reinforcing than a purely thick plastic layer, so it is more economical.
  • the interaction of the metal reinforcing structure along the axial direction of the tube is not involved, and the metal reinforcing structure does not need to be pre-bently coiled, so that it is easier to produce, and the strip can be coiled into a roll. , transported to the construction site to be wound into a tube, thereby reducing transportation costs.
  • the circular cross-section reinforcement of the joint portion of the reinforcing rib and the pipe wall has less influence on the fixed length cutting of the pipe, and thus it is not necessary to peel off in advance.
  • the bonding portion of the reinforcing rib and the substrate is provided with a reinforcing layer reinforcement, and the reinforcing layer is made of a fiber woven layer (such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material), high-strength plastic or metal.
  • a fiber woven layer such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material
  • high-strength plastic or metal such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material
  • the mesh and other suitable materials, the reinforcing layer can be extruded with the strip once or externally, and its function is to strengthen the strength and damage resistance of the metal-free plastic pipe wall and save the plastic material for the pipe wall.
  • the steel strip reinforced composite strip comprises a strip body, the strip body comprises a substrate, and the substrate is provided with at least one perpendicular to the substrate and along the length of the strip
  • An extending reinforcing rib the substrate material is plastic, and the reinforcing rib is preferably provided with ribs and reinforcing ribs.
  • the sheet material is preferably a steel strip, or other metal material, and other composite flexible materials having a modulus of elasticity and strength much larger than that of the plastic.
  • the ribs are covered with plastic, and the plastic may be polyethylene, polyvinyl chloride, and the like.
  • the lap joints of the two sides of the strip and the adjacent strips are respectively an extension platform and an extension boss, and when the lap joint is a protruding platform and an adjacent belt of the side of the strip
  • the projecting projections of the material are joined, and the joint faces are welded or bonded with a molten extrudate in between.
  • the reinforcing ribs are arranged in groups of 2 or 3, and the reinforcing ribs are disposed at a position that does not affect the bending of the strip when the strip is wound into a tube, and does not change the tube length of the unit length.
  • the compressive strength does not affect the fixed length cutting of the pipe, it is preferable to arrange the two or three pieces in a tightly spaced optimal outer spacing defined by the specific production equipment, without changing the material cost of the original pipe.
  • the reinforcing ribs with the height and thickness ratio of the best larger steel strip can be arranged in a tightly arranged group, and the joints with the pipe wall can support each other, thereby increasing the stability of the reinforcing ribs and eliminating
  • the joint portion and the reinforcing rib itself are at risk of breakage or deformation, and the optimum height and thickness ratio of the larger steel strip can be further adopted.
  • the spacing between the different sets of reinforcing ribs is increased, and the longitudinal flexibility of the pipeline is also increased, thereby better eliminating the risk of pipeline failure caused by uneven settlement of the soil.
  • the fixed length cutting of the pipe can be carried out by conventional first stripping steel. With the method of cutting the pipe again, and because the reinforcing ribs are arranged in a tightly arranged manner, the spiral pitch is increased, and the length of the peeling section can be relatively reduced, thereby reducing the influence on the strength of the pipe joint.
  • one or more circular cross-section reinforcing bodies are provided between the end portions and/or the end portions of the reinforcing ribs.
  • the outer diameter and the number of the round section reinforcement are not affected by the bending forming when the strip is wound into the tube, the pipe cost is not significantly increased, and the stability of the joint portion between the reinforcing rib and the pipe wall is ensured.
  • the strong method requires less plastic material, and the reinforcing effect is higher than that of the purely thick plastic layer, so that it has better economy.
  • the interaction of the metal reinforcing structure along the axial direction of the tube is not involved, and the metal reinforcing structure does not need to be pre-bently coiled, so that it is easier to produce, and the strip can be coiled into a roll. , transported to the construction site to be wound into a tube, thereby reducing transportation costs.
  • the circular cross-section reinforcing body of the joint portion of the reinforcing rib and the pipe wall has little influence on the fixed length cutting of the pipe, and thus it is not necessary to peel off in advance.
  • the bonding portion of the reinforcing rib and the substrate is provided with a reinforcing layer reinforcement, and the reinforcing layer is made of a fiber woven layer (such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material), high-strength plastic or metal.
  • a fiber woven layer such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material
  • high-strength plastic or metal such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material
  • the mesh and other suitable materials, the reinforcing layer can be extruded with the strip once or externally, and its function is to strengthen the strength and damage resistance of the metal-free plastic pipe wall and save the plastic material for the pipe wall.
  • the advantageous effects of the present invention are as follows:
  • the present invention is easy to produce, has excellent economical properties, and has excellent workability, and has high compressive strength.
  • FIG. 1 is a schematic view of a prior art plastic steel wound pipe
  • Figure 3 is a schematic cross-sectional view of a specific embodiment of the present invention.
  • Figure 4 is a partial enlarged view of Figure 1;
  • Figure 5 is an external view of a specific embodiment of the present invention;
  • Figure 6 is a schematic cross-sectional view showing a second embodiment of the present invention.
  • Figure 7 is a three-section schematic view of a specific embodiment of the present invention.
  • Figure 8 is a schematic cross-sectional view of a fourth embodiment of the present invention.
  • Figure 9 is a schematic cross-sectional view of a fifth embodiment of the present invention.
  • Figure 10 is a schematic cross-sectional view of a sixth embodiment of the present invention.
  • Figure 1 is a schematic cross-sectional view of a seventh embodiment of the present invention.
  • Figure 12 is a partially enlarged schematic view of Figure 11;
  • Figure 13 is a schematic diagram of a partial transformation of Figure 12;
  • Figure 14 is a schematic view showing the appearance of a seventh embodiment of the present invention.
  • Figure 15 is a schematic cross-sectional view showing an eighth embodiment of the present invention. detailed description
  • a plastic steel coiled pipe is wound by a steel strip reinforced composite strip, and the steel strip reinforced composite strip comprises a strip body, and the strip body comprises a substrate.
  • the substrate 30 is provided with reinforcing ribs 40 perpendicular to the substrate and extending along the length direction of the strip, and the reinforcing ribs 40 are arranged in a group of two to be closely arranged at an optimally small spacing defined by a specific production device; When a rib has a tendency to bend to one side due to the force, the other rib adjacent to it will generate a reaction force to pull it back.
  • the stability of the reinforcing ribs during bending and winding and the use thereof can be ensured without changing the material cost of the original pipe, and the lodging of the reinforcing ribs can be prevented, and the stability of the reinforcing ribs 40 can be further increased.
  • the height-to-thickness ratio of the steel strip can reduce the weight of the material per unit length under the same ring stiffness, further saving the cost
  • the substrate material is plastic
  • the rib 401 material of the reinforcing rib 40 is a steel strip, outside the rib 401 Uniformly coated with plastic 402
  • the plastic may be polyethylene, polyvinyl chloride, and
  • the plastic material to which he is applicable the lap joints of the two sides of the strip and the adjacent strips are the extension platform 31 and the projecting boss 32, respectively, and the lap joints are the extension platforms 31 and the sides of the strip.
  • the projecting bosses 32 of the adjacent strips are joined, and the joint faces are welded and bonded with molten extrudate in the middle, as shown in FIG. 4, when used as a buried cable protection tube, grouped
  • the rib end recess can be blocked to prevent damage caused by on-site winding hooking.
  • FIG. 6 shows a second embodiment of the present invention.
  • the metal-free plastic pipe wall with a large spacing and the bonding portion of the reinforcing rib 40 and the substrate 30 are reinforced by a reinforcing layer 50, and the reinforcing layer 50 is reinforced.
  • the material is a fiber woven layer (such as fiberglass, synthetic fiber, natural fiber, resin fiber or composite), high-strength plastic or metal mesh, and other suitable materials.
  • the reinforcing layer 50 can be extruded with the strip at one time or externally. Its role is to strengthen the strength and damage resistance of the plastic pipe wall, and save plastic materials for the pipe wall.
  • Figure 7 shows a third embodiment of the present invention.
  • the joint portion of the reinforcing rib 40 and the pipe wall is subjected to a large force.
  • One or more round section reinforcing bodies 41 having an appropriate outer diameter are reinforced.
  • the material of the circular section reinforcement 41 may be a single solid core steel wire, a multi-strand steel wire and other suitable fiber braided ropes (such as glass fiber, synthetic fiber, natural fiber, resin fiber or composite material), high-strength plastic or other metal materials. .
  • the position of the reinforcing body may slightly protrude from the outer surface of the substrate 30; to save material, the circular section reinforcing body 41 may also be embedded in the substrate 30 with the root of the vertical metal reinforcing rib 401 extending into the substrate, as shown in FIG.
  • the fourth embodiment is shown in the fourth embodiment. If it is a single circular section reinforcing body 41, its horizontal position is generally set on the vertical symmetry line of the group of reinforcing ribs, as shown in Fig. 9 in the fifth embodiment of the present invention.
  • Figure 10 shows a sixth embodiment of the present invention, which differs from the foregoing in that the reinforcing ribs 40 are not grouped and equally spaced, and the circular cross-section reinforcing body 41 having an appropriate outer diameter can be used to improve the stability of the reinforcing rib 40.
  • Figure 1 1 , Figure 1 2 , Figure 1 3 shows a seventh embodiment of the present invention, which differs in that the ends of the two sets of reinforcing ribs 40 are provided with a plastic 404 and a circular cross-section reinforcing body having a larger outer diameter.
  • the joint portion of the reinforcing rib 40 and the pipe wall is subjected to a large force, and is strengthened by using one or more round section reinforcing bodies 41 having a small outer diameter;
  • the material of the circular section reinforcing body may be a single root Solid steel wire, stranded steel wire and other suitable fiber braided ropes (such as fiberglass, synthetic fiber, natural fiber, resin fiber or composite), high-strength plastic or other metal materials.
  • the upper and lower positions of the reinforcing body 41 may slightly protrude from the outer surface of the substrate 30, as shown in Fig. 13. To save material, the circular section reinforcement 41 can also be embedded in the substrate as shown in Fig. 12.
  • the horizontal position of the single circular section reinforcing body 41 is generally disposed on the vertical symmetry line of the set of reinforcing ribs 40.
  • the pipe wound by the strip has a good longitudinal flexibility, and the production equipment is cylindricalized by the elimination of the steel strip conveying straightening system.
  • Commercially available cross-section coils have a greater length than strip rolls, saving the number of manual connections.
  • Figure 15 shows a eighth embodiment of the present invention, which differs in that the circular-section reinforcing body 403 having a larger outer diameter is inserted into the tube after the strip is wound into a tube, and then extruded into two sets of the ends of the reinforcing ribs 40, and then extruded.
  • the same plastic 405 seal is used for rust prevention.
  • the strip is less deformed during winding, and the two sets of reinforcing ribs 40 can effectively ensure the stability of the reinforcing rib during bending and use, and prevent it from falling down.
  • a reel having a smaller initial diameter can be used to increase the length of the reelable strip, further saving transportation costs. Therefore, it is suitable to transport the strip to the construction site and wind it into a tube.
  • the group of reinforcing ribs 40 can be closed at the end recess, and the circular section reinforcing body 42 can be added to share the load when the pipe is under pressure.
  • the circular section reinforcements 41, 42 can be added in pairs according to the ring stiffness requirements.
  • Vertical metal reinforcement ribs can also be added if necessary.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

一种塑钢缠绕管的加强方法及钢带增强复合带材
技术领域
本发明涉及塑钢缠绕管领域， 尤其涉及一种塑钢缠绕管的加强方法及带材。 背景技术
埋地排水管及电力、 通信的埋地线缆保护管， 尤其是大直径的管道， 出于 生产工艺的便利， 通常采用塑料螺旋缠绕管。
为了抵抗埋地时的土壤压力， 同时节省材料， 这种塑料缠绕管通常采用结 构管壁。 即在管壁做出加强肋， 并在加强肋中采用钢带加强， 做成塑钢螺旋缠 绕管， 在提高管材耐压强度的同时进一步节省材料， 降低生产成本。
申请日为 2005年 7月 4日的中国专利 200520112528. 4公开了一种塑钢缠绕结 构壁管道， 如附图 1和附图 2所示， 管材 2由内层管壁构成封闭的光滑流体通道， 管壁外表面为螺旋环绕的钢带增强实心直肋结构。
对于上述塑钢缠绕管， 由于管壁钢肋比塑料的弹性模量大得多， 因此， 在 管子环向变形中钢肋承受了大部分负荷。 在管子断面保持不变时， 塑料管壁经 历应力释放， 将随时间而松弛， 这样钢肋就基本上全部承受着管子上的负荷。 因此在达到同样的承压强度时， 只要采用较高的钢带高度与厚度比， 就可提高 材料的利用率， 使管材的材料成本为最小。
需要注意的是， 当钢带高度与厚度比过高时， 需要对加强肋与管壁的结合 部位予以加强， 管壁外的螺旋加强肋也不能过于单薄， 从而消除所述部位发生 破损或变形的风险； 同时又要保持该类管材特有的经济性优良、 易于生产的特 点， 避免材料成本急剧增大。
发明内容 本发明所要解决的问题是提供易于生产， 并在具有优良的经济性的同时兼 具优良的施工性， 且承压强度较高的塑钢缠绕管的加强方法及钢带增强复合带 材。
本发明塑钢缠绕管的加强方法的技术方案是： 所述塑钢缠绕管以钢带增强 复合带材缠绕而成， 所述钢带增强复合带材包括带材本体， 所述带材本体包括 基板， 所述基板上设有至少一个垂直于基板， 并沿带材长度方向延伸的加强肋， 所述基板材料为塑料， 加强肋中优选设有肋片， 加强肋肋片材料优选为钢带， 也可以是其它金属材料以及弹性模量和强度远大于塑料的其他复合挠性材料， 肋片外均勾包覆塑料， 塑料可以是聚乙烯、 聚氯乙烯， 以及其他适用的塑料材 料， 所述带材两侧与相邻带材的缠绕搭接部位分别为伸出平台和伸出凸台， 缠 绕搭接时是将带材的侧部的伸出平台与相邻带材的伸出凸台接合， 采用中间以 熔融的挤出料对接合面进行焊接粘合或粘接。 在保证肋片缠绕成管弯曲为弧状 时， 钢带局部区域不发生过度屈曲， 危及管子承受径向外压负载的能力， 甚至 出现钢带失稳的前提下， 采用最佳较大钢带高度与厚度比， 这个比例的具体值 由具体缠绕设备的生产条件来限定， 这样就可提高材料的利用率， 使管材的材 料成本为最小。
上述方案中， 所述加强肋以 2或 3根靠紧为一组， 成组间距布置， 加强肋 的设置位置在不影响带材缠绕成管材时的弯曲成型、 不改变单位长度的管材的 承压强度、 不影响管材的定长切断的前提下， 优选的以 2或 3根为一组靠紧以 具体生产设备限定的最佳较小间距布置， 在不需要改变原有管材的材料成本的 条件下， 就可使采用最佳较大钢带高度与厚度比后的加强肋因成组靠紧布置， 在与管壁的结合部位能做到相互扶持， 从而增加加强肋的稳定性， 消除结合部 位及加强肋本身发生破损或变形的风险， 并可进一步采用最佳较大钢带高度与 厚度比。 同时不同组加强肋之间的间距拉大， 还增加了管道的纵向可挠性， 从 而更好地消除土壤不均勾沉降造成管道失效的风险， 管材的定长切断可采用常 规的先剥离钢带再切断管材的方法， 且因加强肋成组靠紧布置， 其螺旋间距加 大， 剥离段的长度可相对减小， 从而降低对管道接头的强度影响。
上述方案中， 优选所述加强肋端部和 /或加强肋与管壁结合部位设有一条以 上的圓截面加强体。 圓截面加强体外径与数量以不影响带材缠绕成管材时的弯 曲成型、 不明显增加管材成本， 并能确保加强肋与管壁的结合部位的稳定性为 前提。 这种加强方式所需塑料材料较少， 加强效果比单纯加厚塑料层更高， 因 此具有较佳的经济性。 并且在带材缠绕成管材的弯曲成型时， 不涉及金属加强 结构沿管材轴向的相互作用， 不需要对金属加强结构进行预弯盘绕， 因此更易 于生产， 并可将带材盘绕成卷后， 运往施工现场缠绕成管， 从而降低运输成本。 另外加强肋与管壁的结合部位的圓截面加强体对管材的定长切断影响较小， 因 此不需要预先剥离。
上述方案中， 所述加强肋与基板的结合部位设有加强层加强， 加强层的材 料为纤维编织层（如玻璃纤维、 合成纤维、 自然纤维、 树脂纤维或复合材料）、 高强度塑料或金属网以及其他适用的材料， 加强层可与带材一次挤出也可外贴 缠绕， 其作用是加强无金属塑料管壁的强度及防破损性能， 并节省用于管壁的 塑料材料。
上述方案中， 所述成组加强肋端部之间的凹陷处封堵， 并加入圓截面加强 体分担管材承压时的负荷。
本发明钢带增强复合带材的技术方案是： 钢带增强复合带材包括带材本体， 所述带材本体包括基板， 所述基板上设有至少一个垂直于基板， 并沿带材长度 方向延伸的加强肋， 所述基板材料为塑料， 加强肋中优选设有肋片， 加强肋肋 片材料优选为钢带， 也可以是其它金属材料以及弹性模量和强度远大于塑料的 其他复合挠性材料， 肋片外均勾包覆塑料， 塑料可以是聚乙烯、 聚氯乙烯， 以 及其他适用的塑料材料， 所述带材两侧与相邻带材的缠绕搭接部位分别为伸出 平台和伸出凸台， 缠绕搭接时是将带材的侧部的伸出平台与相邻带材的伸出凸 台接合， 采用中间以熔融的挤出料对接合面进行焊接粘合或粘接。 在保证肋片 缠绕成管弯曲为弧状时， 钢带局部区域不发生过度屈曲， 危及管子承受径向外 压负载的能力， 甚至出现钢带失稳的前提下， 采用最佳较大钢带高度与厚度比， 用率， 使管材的材料成本为最小。
上述方案中， 所述加强肋以 2或 3根靠紧为一组， 成组间距布置， 加强肋 的设置位置在不影响带材缠绕成管材时的弯曲成型、 不改变单位长度的管材的 承压强度、 不影响管材的定长切断的前提下， 优选的以 2或 3根为一组靠紧以 具体生产设备限定的最佳较小间距布置， 在不需要改变原有管材的材料成本的 条件下， 就可使采用最佳较大钢带高度与厚度比后的加强肋因成组靠紧布置， 在与管壁的结合部位能做到相互扶持， 从而增加加强肋的稳定性， 消除结合部 位及加强肋本身发生破损或变形的风险， 并可进一步采用最佳较大钢带高度与 厚度比。 同时不同组加强肋之间的间距拉大， 还增加了管道的纵向可挠性， 从 而更好地消除土壤不均勾沉降造成管道失效的风险， 管材的定长切断可采用常 规的先剥离钢带再切断管材的方法， 且因加强肋成组靠紧布置， 其螺旋间距加 大， 剥离段的长度可相对减小， 从而降低对管道接头的强度影响。
上述方案中， 优选所述加强肋端部之间和 /或端部设有一条以上的圓截面加 强体。 圓截面加强体外径与数量以不影响带材缠绕成管材时的弯曲成型、 不明 显增加管材成本， 并能确保加强肋与管壁的结合部位的稳定性为前提。 这种加 强方式所需塑料材料较少， 加强效果比单纯加厚塑料层更高， 因此具有较佳的 经济性。 并且在带材缠绕成管材的弯曲成型时， 不涉及金属加强结构沿管材轴 向的相互作用， 不需要对金属加强结构进行预弯盘绕， 因此更易于生产， 并可 将带材盘绕成卷后， 运往施工现场缠绕成管， 从而降低运输成本。 另外加强肋 与管壁的结合部位的圓截面加强体对管材的定长切断影响较小， 因此不需要预 先剥离。
上述方案中， 所述加强肋与基板的结合部位设有加强层加强， 加强层的材 料为纤维编织层（如玻璃纤维、 合成纤维、 自然纤维、 树脂纤维或复合材料）、 高强度塑料或金属网以及其他适用的材料， 加强层可与带材一次挤出也可外贴 缠绕， 其作用是加强无金属塑料管壁的强度及防破损性能， 并节省用于管壁的 塑料材料。
上述方案中， 所述成组加强肋端部之间的凹陷处封堵， 并加入圓截面加强 体分担管材承压时的负荷。 本发明的有益效果是： 本发明易于生产， 并在具有优良的经济性的同时兼 具优良的施工性， 且承压强度较高。 附图说明
下面结合附图和具体实施方式对本发明作进一步说明：
图 1是现有技术塑钢缠绕管管材示意图；
图 2是现有技术塑钢缠绕管管材外观图；
图 3是本发明具体实施方式一截面示意图；
图 4是图 1中局部放大示意图； 图 5是本发明具体实施方式一外观图；
图 6是本发明具体实施方式二截面示意图；
图 7是本发明具体实施方式三截面示意图；
图 8是本发明具体实施方式四截面示意图；
图 9是本发明具体实施方式五截面示意图；
图 1 0是本发明具体实施方式六截面示意图；
图 1 1是本发明具体实施方式七截面示意图；
图 12是图 1 1中局部放大示意图；
图 1 3是图 1 2局部变换示意图；
图 14是本发明具体实施方式七外观示意图；
图 15是本发明具体实施方式八截面示意图。 具体实施方式
如图 3、 图 4、 图 5所示， 为本发明具体实施方式一， 塑钢缠绕管以钢带增 强复合带材缠绕而成， 钢带增强复合带材包括带材本体， 带材本体包括基板 30 , 基板 30上设有垂直于基板并沿带材长度方向延伸的加强肋 40 , 加强肋 40的设 置为以 2 条为一组靠紧以具体生产设备限定的最佳较小间距布置； 当某根肋条 因受力有弯向一侧的趋势时， 与之紧邻的另一个根肋条将产生反作用力将其拉 回。 这样就可在不改变原有管材的材料成本的条件下， 保证加强肋在弯曲卷绕 和使用过程中的稳定性， 防止其倒伏， 由于加强肋 40的稳定性提高， 还可以进 一步采用较大的钢带高度与厚度比， 在环刚度相同的情况下， 可减少单位长度 内的材料重量， 进一步节省成本， 基板材料为塑料， 加强肋 40中肋片 401材料 为钢带， 肋片 401外均匀包覆塑料 402 , 塑料可以是聚乙烯、 聚氯乙烯， 以及其 他适用的塑料材料， 带材两侧与相邻带材的缠绕搭接部位分别为伸出平台 31和 伸出凸台 32 ,缠绕搭接时是将带材的侧部的伸出平台 31与相邻带材的伸出凸台 32接合， 中间以熔融的挤出料对接合面进行焊接粘合或粘接， 如图 4所示， 在 在作为埋地线缆保护管使用时， 成组的加强肋端部凹陷处可封堵， 以防止现场 绕线钩挂造成的破坏。
图 6 所示为本发明具体实施方式二， 作为对上述方案的进一步改进， 对于 间距较大的无金属塑料管壁、 以及加强肋 40与基板 30的结合部位采用加强层 50加强， 加强层 50的材料为纤维编织层（如玻璃纤维、 合成纤维、 自然纤维、 树脂纤维或复合材料）、 高强度塑料或金属网以及其他适用的材料。 加强层 50 可与带材一次挤出也可外贴缠绕。 其作用是加强塑料管壁的强度及防破损性能， 并节省用于管壁的塑料材料。
图 7 所示为本发明具体实施方式三， 作为对上述方案的进一步改进， 在加 强肋 40 以 2条为一组靠紧布置时， 加强肋 40与管壁的结合部位受力较大， 采 用一条以上、 外径适当的圓截面加强体 41加强。 圓截面加强体 41 的材料可以 是单根实芯钢丝、 多股钢丝及其他适用的纤维编织绳（如玻璃纤维、 合成纤维、 自然纤维、 树脂纤维或复合材料）、 高强度塑料或其他金属材料。 加强体的位置 可略为突出基板 30的外表面； 为节省材料， 圓截面加强体 41也可与伸入基板 的竖直金属加强肋片 401的根部相隔埋入基板 30 , 如图 8中本发明具体实施方 式四所示。 如为单一圓截面加强体 41 , 其水平位置一般设置在成组加强肋的垂 直对称线上， 如图 9中本发明具体实施方式五所示。
图 1 0 所示为本发明具体实施方式六， 与前述几个方案区别在于加强肋 40 不分组， 等距均布， 同样可采用外径适当的圓截面加强体 41 提高其加强肋 40 的稳定性。 图 1 1、 图 1 2、 图 1 3所示为本发明具体实施方式七， 其区别在于 2条 1组 的加强肋 40端部通过设置包复塑料 404 , 外径较大的圓截面加强体 403予以加 强，构成管材的环刚度； 加强肋 40与管壁的结合部位受力较大， 采用一条以上、 外径较小的圓截面加强体 41加强 ； 圓截面加强体的材料可以是单根实芯钢丝、 多股钢丝及其他适用的纤维编织绳（如玻璃纤维、 合成纤维、 自然纤维、 树脂 纤维或复合材料）、 高强度塑料或其他金属材料。
加强体 41的上下位置可略为突出基板 30的外表面， 如图 1 3。 为节省材料， 圓截面加强体 41也可埋入基板如图 12。 单一圓截面加强体 41的水平位置一般 设置在成组加强肋 40的垂直对称线上。
因取消了竖直金属加强肋片， 由这种带材所绕制的管材， 其纵向柔性较好， 且因取消钢带输送矫直系统， 其生产设备得到了筒化。 市售园截面卷材与带材 卷相比具有较大的长度， 可节省人工连接的次数。
图 15所示为本发明具体实施方式八， 其区别在于外径较大的圓截面加强体 403是在带材缠绕成管后勒入 2条 1组的加强肋 40端部， 再挤出与带材相同的 塑料 405封口防锈。 这种带材在收卷时受力变形较小， 2条 1组的加强肋 40可 有效保证加强肋在弯曲卷绕和使用过程中的稳定性， 防止其倒伏。 加强肋 40收 卷时可采用初始直径较小的卷筒， 增加可收卷的带材长度， 进一步节约运输成 本。 因此适合将带材运到施工现场缠绕成管。
成组的加强肋 40端部凹陷处可封堵， 并可加入圓截面加强体 42分担管材 承压时的负荷。 圓截面加强体 41、 42可根据环刚度要求成对增加。 必要时还可 加入竖直金属加强肋片。

Claims

权利要求书
、 一种塑钢缠绕管的加强方法， 其特征在于： 所述塑钢缠绕管以钢带增强复 合带材缠绕而成， 所述钢带增强复合带材包括带材本体， 所述带材本体包 括基板， 所述基板上设有至少一个垂直于基板， 并沿带材长度方向延伸的 加强肋， 所述基板材料为塑料， 所述带材两侧与相邻带材的缠绕搭接部位 分别为伸出平台和伸出凸台， 缠绕搭接时是将带材的侧部的伸出平台与相 邻带材的伸出凸台接合， 对接合面进行焊接粘合或粘接，。 、 如权利要求 1所述塑钢缠绕管的加强方法， 其特征在于： 所述加强肋以 2 或 3根靠紧为一组， 成组间距布置。 、 如权利要求 2所述塑钢缠绕管的加强方法， 其特征在于： 所述加强肋端部 和 /或加强肋与管壁结合部位设有一条以上的圓截面加强体。 、 如权利要求 3所述塑钢缠绕管的加强方法， 其特征在于： 所述加强肋中设 有肋片， 肋片材料为弹性模量和强度大于塑料的挠性材料， 肋片外均匀包 覆塑料。 、 如权利要求 1至 4任一权利要求所述塑钢缠绕管的加强方法，其特征在于： 所述加强肋与基板的结合部位设有加强层加强。 、 如权利要求 1至 4任一权利要求所述塑钢缠绕管的加强方法，其特征在于： 所述成组加强肋端部之间的凹陷处封堵， 并加入圓截面加强体分担管材承 压时的负荷。 、 一种塑钢缠绕管的钢带增强复合带材， 包括带材本体， 其特征在于： 所述 带材本体包括基板， 所述基板上设有至少一个垂直于基板， 并沿带材长度 方向延伸的加强肋， 所述基板材料为塑料， 所述带材两侧与相邻带材的缠 绕搭接部位分别为伸出平台和伸出凸台， 缠绕搭接时是将带材的侧部的伸 出平台与相邻带材的伸出凸台接合， 对接合面进行焊接粘合或粘接。 、 如权利要求 7所述塑钢缠绕管的钢带增强复合带材， 其特征在于： 所述加 强肋以 2或 3根靠紧为一组， 成组间距布置。 、 如权利要求 8所述塑钢缠绕管的钢带增强复合带材， 其特征在于： 所述加 强肋端部和 /或加强肋与管壁结合部位设有一条以上的圓截面加强体。 0、 如权利要求 9所述塑钢缠绕管的钢带增强复合带材， 其特征在于： 所述加 强肋中设有肋片， 肋片材料为弹性模量和强度大于塑料的挠性材料， 肋片 外均匀包覆塑料。 1、 如权利要求 7至 1 0任一权利要求所述塑钢缠绕管的钢带增强复合带材， 其特征在于： 所述加强肋与基板的结合部位设有加强层加强。 2、 如权利要求 7至 1 0任一权利要求所述塑钢缠绕管的钢带增强复合带材， 其特征在于： 所述成组加强肋端部之间的凹陷处封堵， 并加入圓截面加强 体分担管材承压时的负荷。
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