Impact-resistant high-molecular HDPE (high-density polyethylene) composite pipe

Abstract

The utility model relates to the technical field of pipelines, and discloses an anti-impact macromolecule HDPE composite pipe which comprises a pipe body, and the pipe body comprises a connecting part pipe section, a corrugated pipe section, a large-diameter pipe section and a straight pipe section which are sequentially connected. The inner diameter of the large-diameter pipe section is larger than that of the straight pipe section. The pipe body sequentially comprises a high-density polyethylene layer, a first stainless steel mesh layer, a buffer layer, a second stainless steel mesh layer and a wear-resistant layer from outside to inside. The anti-impact macromolecule HDPE composite pipe can effectively resist impact of external force of a pipeline, the integrity and stability of the pipeline can be kept even under extreme working conditions, and the good anti-impact effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to an impact-resistant high-polymer polyethylene (HDPE) composite pipe. Background Art

[0002] When exposed to external forces, traditional pipelines often break or become loose due to inadequate materials or structural design, leading to fluid leakage, resource waste, and even safety hazards. This is especially true in specialized applications such as urban water supply systems, drainage systems, industrial pipelines, and gas pipelines, which place extremely high demands on pipeline impact resistance.

[0003] Chinese patent publication number CN204420365U discloses an HDPE drainage pipe comprising a pipe body made of HDPE material. The outer wall of the pipe body is sequentially arranged from the inside out with a porous polyurethane foam layer, a cross-linked polyethylene isolation layer, an antioxidant layer, and an anti-ultraviolet layer. The inner wall of the pipe body is a plain structure and is provided with a nano-bactericidal layer. However, improvements to the HDPE drainage pipe body, whether in the axial or radial directions, fail to effectively address the problem of breakage or loosening of the pipe body when subjected to external impacts. The pipe has poor impact resistance, leading to fluid leakage, resource waste, and even safety hazards. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems of the prior art and provide an impact-resistant high-molecular-weight polyethylene (HDPE) composite pipe.

[0005] In order to achieve the above purpose, the present invention adopts the following scheme:

[0006] A high-density polyethylene (HDPE) composite pipe comprising a pipe body, the pipe body comprising a connecting pipe section, a corrugated pipe section, a large-diameter pipe section and a straight pipe section which are sequentially connected to each other; the inner diameter of the large-diameter pipe section is larger than the inner diameter of the straight pipe section; the pipe body comprises, from the outside to the inside, a high-density polyethylene layer, a first stainless steel mesh layer, a buffer layer, a second stainless steel mesh layer and a wear-resistant layer.

[0007] Furthermore, the outer wall of the high-density polyethylene layer is also covered with a protective layer; the protective layer is a rubber layer.

[0008] Furthermore, the thickness of the high-density polyethylene layer is greater than the thickness of any one of the rubber layer, the first stainless steel mesh layer, the buffer layer, the second stainless steel mesh layer and the wear-resistant layer.

[0009] Furthermore, the first stainless steel mesh layer and the second stainless steel mesh layer are both woven from a plurality of stainless steel wire strands.

[0010] Furthermore, the buffer layer is a polymer buffer layer; the polymer buffer layer is a polyimide buffer layer, a polycarbonate buffer layer or a polyethylene terephthalate buffer layer.

[0011] Furthermore, the wear-resistant layer is an ultra-high molecular weight polyethylene layer.

[0012] Furthermore, each layer structure of the high-density polyethylene layer, the first stainless steel mesh layer, the buffer layer, the second stainless steel mesh layer and the wear-resistant layer is connected by hot melt adhesive.

[0013] Furthermore, the inner diameter of the connecting pipe section is the same as the inner diameter of the straight pipe section.

[0014] Furthermore, the corrugated pipe section and the large-diameter pipe section, as well as the large-diameter pipe section and the straight pipe section are all connected via an arc-shaped pipe section.

[0015] Compared with the existing technology, the utility model has the following advantages:

[0016] The utility model optimizes and improves the axial and radial directions of the pipe body. In the axial direction of the pipe body, the connecting pipe section, the corrugated pipe section, the large-diameter pipe section and the straight pipe section are connected in sequence to form the pipe body. The corrugated pipe section has good deformation resistance and can resist the impact and wear of external forces, such as the impact of fluid, to a certain extent. Secondly, the diameter inside the large-diameter pipe section is designed to be larger than the inner diameter of the straight pipe section, and there is a sufficiently large buffer space. The structural optimization design of the corrugated pipe section and the large-diameter pipe section can reduce the impact pressure of the fluid, make the flow rate of the fluid slow, and prevent the fluid from experiencing counter-flow and convection in the pipe body, thereby avoiding the loosening of the pipe body; in the radial direction of the pipe body, the high-density polyethylene layer, the first stainless steel mesh layer, the buffer layer, the second stainless steel mesh layer and the wear-resistant layer are compounded in sequence from the outside to the inside to form the pipe body, which significantly enhances the tensile strength of the pipeline, effectively resists the external force impact of the pipeline, and maintains the integrity and stability of the pipeline even under extreme working conditions. Through such a design, the pipe body can have a good impact resistance effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the impact-resistant high-polymer HDPE composite pipe of the present invention.

[0019] Figure 2 yes Figure 1 The enlarged structural diagram of part A is shown.

[0020] Figure 3 It is a structural schematic diagram of the impact-resistant high-polymer HDPE composite pipe of the utility model.

[0021] The diagram includes:

[0022] Pipe body 1, connecting pipe section 11, corrugated pipe section 12, large-diameter pipe section 13, straight pipe section 14, arc-shaped pipe section 15, rubber layer 2, high-density polyethylene layer 3, first stainless steel mesh layer 4, buffer layer 5, second stainless steel mesh layer 6, wear-resistant layer 7. DETAILED DESCRIPTION

[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] like Figures 1 to 3 As shown, an impact-resistant high-density polyethylene (HDPE) composite pipe comprises a pipe body 1, which comprises a connecting pipe section 11, a corrugated pipe section 12, a large-diameter pipe section 13, and a straight pipe section 14, which are sequentially connected. The inner diameter of the large-diameter pipe section 13 is larger than that of the straight pipe section 14. From the outside to the inside, the pipe body 1 comprises a high-density polyethylene layer 3, a first stainless steel mesh layer 4, a buffer layer 5, a second stainless steel mesh layer 6, and a wear-resistant layer 7. The high-density polyethylene layer 3, also known as the HDPE layer, is the main structure of the pipe. The HDPE pipe layer has excellent corrosion resistance, aging resistance, and a certain degree of flexibility, and is the main part of the pipe that withstands internal and external pressures. The first stainless steel mesh layer 4 is located immediately inside the high-density polyethylene layer 3 and mainly strengthens the tensile strength of the pipe, preventing it from breaking due to external forces, thus achieving a first level of impact resistance. The buffer layer 5, located inside the first stainless steel mesh layer 4 and made of a highly elastic material, effectively absorbs and disperses radial impact energy, protecting the internal structure of the pipe from damage, thus achieving a second level of impact resistance. The second stainless steel mesh layer 6, located inside the buffer layer 5, works in conjunction with the first stainless steel mesh layer 4 and the buffer layer 5 to further enhance the tensile strength of the pipeline, further enhancing its stability and preventing breakage due to external forces, thereby achieving a third level of impact resistance. The wear-resistant layer 7, the innermost layer, is made of a highly wear-resistant material to ensure that the pipeline is protected from wear and tear due to fluid erosion during long-term use. The various layers are connected using hot-melt adhesive: the high-density polyethylene layer 3, the first stainless steel mesh layer 4, the buffer layer 5, the second stainless steel mesh layer 6, and the wear-resistant layer 7.

[0025] The impact-resistant high-polymer HDPE composite pipe optimizes and improves the axial and radial directions of the pipe body 1. In the axial direction of the pipe body 1, the connecting pipe section 11, the corrugated pipe section 12, the large-diameter pipe section 13 and the straight pipe section 14 are sequentially connected to form the pipe body 1. The corrugated pipe section 12 has good deformation resistance and can resist the impact and wear of external forces, such as fluid impact, to a certain extent. Secondly, the diameter of the large-diameter pipe section 13 is designed to be larger than the inner diameter of the straight pipe section 14, and there is a sufficiently large buffer space. The structures of the corrugated pipe section 12 and the large-diameter pipe section 13 are optimized. It can slow down the impact pressure of the fluid, make the flow rate of the fluid slow, prevent the fluid from counter-current, convection and other phenomena in the pipe body 1, and thus avoid the loosening of the pipe body 1; in the radial direction of the pipe body 1, the high-density polyethylene layer 3, the first stainless steel mesh layer 4, the buffer layer 5, the second stainless steel mesh layer 6 and the wear-resistant layer 7 are compounded in sequence from the outside to the inside to form the pipe body 1, which significantly enhances the tensile strength of the pipeline, effectively resists the external force impact of the pipeline, and can maintain the integrity and stability of the pipeline even under extreme working conditions. Through such a design, the pipe body 1 can have a good impact resistance effect.

[0026] In order to better protect the impact-resistant high-molecular-weight HDPE composite pipe, the outer wall of the high-density polyethylene layer 3 is also coated with a protective layer; preferably, the protective layer is a rubber layer 2. The rubber layer 2 is used as a protective layer, and the elasticity of the rubber is utilized to help buffer the external impact.

[0027] In this embodiment, the thickness of the high-density polyethylene layer 3 is greater than the thickness of any of the structural layers among the rubber layer 2, the first stainless steel mesh layer 4, the buffer layer 5, the second stainless steel mesh layer 6, and the wear-resistant layer 7. As the main structure of the pipe, the high-density polyethylene layer 3 is thicker than the thickness of the other layer structures. In terms of mechanical properties, it can better withstand external pressure, more effectively disperse pressure, reduce the possibility of pipe deformation, and ensure the normal use of the pipe. The thicker high-density polyethylene layer 3 has better buffering capacity when subjected to unexpected impacts, such as being hit by tools at a construction site or being hit during transportation, and can absorb and disperse impact energy, reducing the risk of damage to the pipe. In terms of durability, the thicker high-density polyethylene layer 3 has good chemical corrosion resistance, providing more lasting corrosion protection for the pipe. In comparison, other thinner structural layers may not provide such long-lasting corrosion protection, which is beneficial to improving the overall safety of the impact-resistant polymer HDPE composite pipe.

[0028] In this embodiment, both the first stainless steel mesh layer 4 and the second stainless steel mesh layer 6 are braided from a plurality of strands of stainless steel wire. The use of braided stainless steel wire to form the first stainless steel mesh layer 4 or the second stainless steel mesh layer 6 provides high rigidity and good elasticity. When used in this impact-resistant high-density polyethylene (HDPE) composite pipe, the tightly packed first stainless steel mesh layer 4 and the second stainless steel mesh layer 6 enhance the stability and safety of the pipe, preventing loosening and displacement during use, thereby avoiding damage caused by such loosening.

[0029] The buffer layer 5 is a polymer buffer layer 5, such as a polyimide buffer layer 5, a polycarbonate buffer layer 5, or a polyethylene terephthalate buffer layer 5. These are all conventional buffer layers 5. As highly elastic materials, they can effectively absorb and disperse radial impact energy, protecting the internal structure of the pipeline from damage and achieving excellent impact resistance.

[0030] In this embodiment, the wear-resistant layer 7 is an ultra-high molecular weight polyethylene layer. Ultra-high molecular weight polyethylene as the wear-resistant layer 7 has extremely high wear resistance and can remain stable for a long time under heavy loads and high wear environments without generating significant wear and debris, ensuring that the pipeline is not worn out by fluid erosion during long-term use.

[0031] In this embodiment, the inner diameter of the connecting pipe section 11 is the same as that of the straight pipe section 14. The bellows section 12 and the large-diameter pipe section 13, as well as the large-diameter pipe section 13 and the straight pipe section 14, are both connected via an arcuate pipe section 15. This design optimizes the structure of the large-diameter pipe section 13 and the bellows section 12, mitigating fluid impact pressure and smoothing fluid flow. This prevents counterflow and convection within the pipe body 1, thereby preventing the pipe body 1 from loosening.

[0032] In summary, the embodiment of the present invention provides an impact-resistant high-molecular-weight HDPE composite pipe, wherein the impact-resistant high-molecular-weight HDPE composite pipe optimizes and improves the axial and radial directions of the pipe body 1. In the axial direction of the pipe body 1, the connecting pipe section 11, the corrugated pipe section 12, the large-diameter pipe section 13 and the straight pipe section 14 are sequentially connected to form the pipe body 1. The corrugated pipe section 12 has good anti-deformation ability and can resist the impact and wear of external forces, such as the impact of fluid, to a certain extent. Secondly, the diameter of the large-diameter pipe section 13 is designed to be larger than the inner diameter of the straight pipe section 14, and there is a sufficiently large buffer space. The corrugated pipe section 12 The structural optimization design of the large-diameter pipe section 13 can reduce the impact pressure of the fluid, make the flow rate of the fluid slow, prevent the fluid from counter-current, convection and other phenomena in the pipe body 1, and thus avoid the loosening of the pipe body 1; in the radial direction of the pipe body 1, the high-density polyethylene layer 3, the first stainless steel mesh layer 4, the buffer layer 5, the second stainless steel mesh layer 6 and the wear-resistant layer 7 are compounded in sequence from the outside to the inside to form the pipe body 1, which significantly enhances the tensile strength of the pipeline, effectively resists the external force impact of the pipeline, and maintains the integrity and stability of the pipeline even under extreme working conditions. Through such a design, the pipe body 1 can have a good impact resistance effect.

[0033] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present application. These improvements and replacements should also be regarded as the scope of protection of the present application.

Claims

1. An impact-resistant high-polymer HDPE composite pipe, comprising a pipe body, characterized in that: The pipe body includes a connecting pipe section, a corrugated pipe section, a large-diameter pipe section and a straight pipe section which are connected in sequence; the inner diameter of the large-diameter pipe section is larger than the inner diameter of the straight pipe section; the pipe body includes a high-density polyethylene layer, a first stainless steel mesh layer, a buffer layer, a second stainless steel mesh layer and a wear-resistant layer from the outside to the inside.

2. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1, characterized in that: The outer wall of the high-density polyethylene layer is also covered with a protective layer; the protective layer is a rubber layer.

3. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 2, characterized in that: The thickness of the high-density polyethylene layer is greater than the thickness of any one of the rubber layer, the first stainless steel mesh layer, the buffer layer, the second stainless steel mesh layer and the wear-resistant layer.

4. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1 or 2, characterized in that: The first stainless steel mesh layer and the second stainless steel mesh layer are both woven from a plurality of stainless steel wires.

5. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1 or 2, characterized in that: The buffer layer is a polymer buffer layer; the polymer buffer layer is a polyimide buffer layer, a polycarbonate buffer layer or a polyethylene terephthalate buffer layer.

6. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1 or 2, characterized in that: The wear-resistant layer is an ultra-high molecular weight polyethylene layer.

7. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1, characterized in that: The high-density polyethylene layer, the first stainless steel mesh layer, the buffer layer, the second stainless steel mesh layer and the wear-resistant layer are connected by hot-melt adhesive.

8. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1, characterized in that: The inner diameter of the connecting pipe section is the same as the inner diameter of the straight pipe section.

9. The impact-resistant high-density polyethylene (HDPE) composite pipe according to claim 1, characterized in that: The corrugated pipe section and the large-diameter pipe section, as well as the large-diameter pipe section and the straight pipe section are all connected via an arc-shaped pipe section.

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