High-strength compression-resistant PE pipe

Abstract

The utility model relates to the technical field of PE pipes, in particular to a high-strength compression-resistant PE pipe which comprises a pipe body made of PE materials, a protective layer wrapping the outer side of the pipe body, a buffer layer arranged between the pipe body and the protective layer and a supporting layer arranged on the outer wall of the pipe body. The supporting layer comprises supporting rings distributed in a spiral mode, by designing the spiral distribution design of the supporting rings with the I-shaped sections, the problem of circumferential stress concentration of a traditional PE pipe is effectively solved, mechanical complementation is formed between flanges of an I-shaped structure and a web, the contact area between the flanges and the inner wall and the outer wall of the pipe body is enlarged, and uniform load transmission is achieved. The web plates vertically support the radial pressure of the pipe body, the circumferential compressive rigidity of the pipeline is remarkably improved, pipe wall collapse caused by local stress concentration can be avoided, and the structural integrity of the pipeline under long-term pressure is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of PE pipe technology, and in particular to a high-strength, pressure-resistant PE pipe. Background Technology

[0002] PE pipe is a type of plastic pipe made primarily of polyethylene resin. It is lightweight, corrosion-resistant, and highly flexible. PE pipe has a wide range of applications, with water supply pipes and gas pipes being its two largest markets. It is increasingly used in water supply and drainage projects and building construction projects in daily life.

[0003] Existing PE pipes have a simple structure, typically formed by extruding molten PE resin. However, during long-term use in construction projects, the surface of PE pipes is prone to deformation due to pressure. As a single-layer structure, the load cannot be effectively distributed. Under long-term pressure, local stress concentration occurs at the junction of the support layer and the pipe body, causing the pipe body to collapse. This results in a short service life for PE pipes and affects water supply and drainage projects, failing to meet the usage requirements of PE pipes in construction projects.

[0004] Therefore, a high-strength, pressure-resistant PE pipe is proposed to address the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a high-strength, pressure-resistant PE pipe, thereby overcoming the deficiencies in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-strength and pressure-resistant PE pipe, comprising a pipe body made of PE material, a protective layer covering the outside of the pipe body, a buffer layer disposed between the pipe body and the protective layer, and a support layer disposed on the outer wall of the pipe body. The buffer layer includes a plurality of protrusions distributed along the axial direction of the pipe body, and the support layer includes spirally distributed support rings.

[0007] The protrusions are hemispherical, and a pressure relief gap is formed between two adjacent sets of protrusions.

[0008] The protrusion has a cavity inside.

[0009] The support ring has an I-shaped cross-section, its inner edge is connected to the tube body, and its outer edge extends to the outside of the tube body.

[0010] The outer surface of the protective layer is provided with anti-slip texture, which is an annular groove.

[0011] The buffer layer and the protective layer are further provided with a pressure-resistant filling layer, which is made of polyurethane foam material.

[0012] The compression-resistant filling layer is embedded with a metal wire mesh, which is distributed in a mesh pattern.

[0013] The support layer further includes reinforcing ribs, which are inclinedly disposed at the intersection nodes of the support ring.

[0014] The inner wall of the tube is coated with a wear-resistant coating, which is made of polytetrafluoroethylene.

[0015] The protective layer has flange connection parts at both ends, and bolt holes are evenly distributed on the flange connection parts.

[0016] The protective layer is made of high-density polyethylene.

[0017] The buffer layer is made of foamed polyethylene.

[0018] The support layer is made of glass fiber reinforced nylon.

[0019] The beneficial effects of this utility model are as follows: by designing the spiral distribution of the I-shaped cross-section support ring, the problem of circumferential stress concentration in traditional PE pipes is effectively solved. The flanges and webs of the I-shaped structure form mechanical complementarity, the flanges expand the contact area with the inner and outer walls of the pipe, and the load is evenly transferred. The webs vertically support the radial pressure of the pipe, significantly improving the circumferential compressive stiffness of the pipe, avoiding pipe wall collapse caused by local stress concentration, and ensuring the structural integrity of the pipe under long-term pressure.

[0020] By designing a combined structure of hemispherical protrusions and pressure relief gaps, point impact force is transformed into the synergistic energy absorption of multiple protrusions. The pressure relief gaps between adjacent protrusions form stress diffusion channels, guiding the impact energy to disperse along the pipe axis, significantly reducing the risk of pipe deformation under long-term pressure. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a high-strength, pressure-resistant PE pipe according to Embodiment 1 of this application;

[0022] Figure 2 This is a front view of a high-strength, pressure-resistant PE pipe according to Embodiment 1 of this application;

[0023] Figure 3 This is a schematic diagram of the layered cross-sectional structure of a high-strength, pressure-resistant PE pipe according to Embodiment 1 of this application;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the pressure-resistant filling layer in a high-strength and pressure-resistant PE pipe according to Embodiment 1 of this application;

[0025] Figure 5This is a side view of a high-strength, pressure-resistant PE pipe according to Embodiment 1 of this application;

[0026] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0027] Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle;

[0028] Figure 8 This is a structural schematic diagram of a high-strength, pressure-resistant PE pipe according to Embodiment 2 of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Pipe body; 2. Protective layer; 3. Buffer layer; 4. Support layer; 5. Protrusion; 6. Support ring; 7. Pressure relief gap; 8. Anti-slip texture; 9. Pressure-resistant filling layer; 10. Metal wire mesh; 11. Reinforcing rib; 12. Flange connection; 13. Bolt hole; 14. Wear-resistant coating; 15. Cavity. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so as to intuitively and vividly understand each technical feature and overall technical solution of the present utility model. However, they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. When a feature is referred to as "set," "fixed," or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0032] In the description of this utility model, the term "several" means one or more, and "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number. The terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features and not as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0033] Furthermore, unless otherwise defined, the technical and scientific terms used in this invention have the same meanings as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for the purpose of describing particular embodiments only and not for limiting the invention. It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0034] Example 1: As Figure 1-7 As shown, a high-strength and pressure-resistant PE pipe includes a pipe body 1 made of PE material, a protective layer 2 covering the outside of the pipe body 1, a buffer layer 3 disposed between the pipe body 1 and the protective layer 2, and a support layer 4 disposed on the outer wall of the pipe body 1. The buffer layer 3 includes multiple protrusions 5 distributed along the axial direction of the pipe body 1, and the support layer 4 includes spirally distributed support rings 6. Through the composite structure of the buffer layer 3 and the spiral support rings 6, external impact forces can be dispersed and circumferential pressure resistance can be enhanced. The axial protrusions 5 of the buffer layer 3 can absorb radial deformation energy, and the spiral support rings 6 improve the overall rigidity of the pipe through circumferential continuity.

[0035] The protrusion 5 is hemispherical, and a pressure relief gap 7 is formed between two adjacent sets of protrusions 5. The combination of hemispherical protrusions 5 and pressure relief gap 7 can disperse multi-directional stress. The pressure relief gap 7 between adjacent protrusions 5 forms an energy dissipation channel, which reduces the impact effect.

[0036] The protrusion 5 has a cavity 15 inside. The design of the cavity 15 allows energy to be further dissipated through cavity deformation and air compression when under pressure. It works in conjunction with the pressure relief gap 7 between adjacent protrusions 5 to avoid stress concentration.

[0037] The support ring 6 has an I-shaped cross-section, the inner edge of the support ring 6 is connected to the tube body 1, and the outer edge of the support ring 6 extends to the outside of the tube body 1.

[0038] The outer surface of the protective layer 2 is provided with anti-slip texture 8, which is an annular groove. The annular groove anti-slip texture 8 increases the contact friction between the pipe body 1 and the ground, improves the practicality of the pipe, and facilitates pipe alignment during installation.

[0039] Among them, a pressure-resistant filling layer 9 is provided between the buffer layer 3 and the protective layer 2. The pressure-resistant filling layer 9 is made of polyurethane foam material, which can reduce the gap between the pipe body 1 and the protective layer 2 and increase the overall elastic buffering effect of the pipeline.

[0040] The compression-resistant filling layer 9 is embedded with a metal mesh 10, which is distributed in a mesh pattern. The mesh pattern of the metal mesh 10 forms a reinforcing skeleton, which works in conjunction with the polyurethane foam material to resist shear stress.

[0041] The support layer 4 also includes a reinforcing rib 11, which is inclinedly disposed at the intersection of the support ring 6. The inclination angle of the reinforcing rib 11 can optimize the load transmission path of the support ring 6 and prevent the spiral support ring 6 from becoming unstable under alternating loads.

[0042] The inner wall of the pipe body 1 is coated with a wear-resistant coating 14, which is made of polytetrafluoroethylene. The wear-resistant coating 14 on the inner wall can reduce the energy consumption of fluid transportation and protect the inner wall of the pipe body 1 from wear.

[0043] The protective layer 2 is made of high-density polyethylene, which has excellent chemical corrosion resistance, impact resistance and wear resistance. As a protective layer 2, it can resist soil friction, mechanical scratches and environmental erosion.

[0044] The buffer layer 3 is made of foamed polyethylene. The closed-cell foam structure is lightweight and has high energy absorption efficiency, and can dissipate energy through compression deformation.

[0045] The support layer 4 is made of glass fiber reinforced nylon, which can provide high modulus support and suppress radial deformation of the tube body 1.

[0046] The implementation principle of a high-strength pressure-resistant PE pipe in this embodiment is as follows: When in use, when external pressure is applied to the protective layer 2, the hemispherical protrusions 5 of the buffer layer 3 absorb radial impact energy through deformation, the pressure-reducing gaps 7 between adjacent protrusions 5 guide stress dispersion, the spirally distributed I-shaped support rings 6 enhance the circumferential pressure resistance of the pipe body 1 through their cross-sectional structure, and work together with the inclined reinforcing ribs 11 to transfer the load and prevent the pipe body 1 from collapsing. The metal wire mesh 10 in the pressure-resistant filling layer 9 is combined with polyurethane foam material to resist shear deformation. At the same time, the cavity 15 structure inside the protrusions 5 absorbs external pressure or impact energy through deformation, the polytetrafluoroethylene coating on the inner wall of the pipe body 1 reduces fluid friction, and the annular anti-slip texture 8 on the outside of the protective layer 2 increases the adhesion to the ground. Ultimately, the pipeline achieves high-strength pressure resistance, impact resistance, and long-term stable operation under complex loads.

[0047] Example 2: Refer to Figure 8 The protective layer 2 includes a high-strength pressure-resistant PE pipe as described in Example 1. Flange connection parts 12 are provided at both ends of the protective layer 2. Bolt holes 13 are evenly distributed on the flange connection parts 12. The flange connection parts 12 facilitate the standardized connection of multiple pipe interfaces, and the even distribution of bolt holes 13 ensures that the connection surface is subjected to balanced force.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications and substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A high-strength and high-pressure-resistant PE pipe, comprising a pipe body (1) made of PE material, and a protective layer (2) wrapped outside the pipe body (1), characterized in that: The pipe body (1) and the protective layer (2) are provided with a buffer layer (3) therebetween, and the outer wall of the pipe body (1) is provided with a support layer (4); the buffer layer (3) comprises a plurality of protruding portions (5) distributed along the axial direction of the pipe body (1); and the support layer (4) comprises support rings (6) distributed in a spiral manner.

2. The high-strength pressure-resistant PE pipe according to claim 1, characterized in that: The protruding portions (5) are in a semispherical shape, and a decompression gap (7) is formed between adjacent two groups of the protruding portions (5).

3. The high-strength pressure-resistant PE pipe according to claim 2, characterized in that: The protruding portions (5) are internally provided with cavities (15).

4. The high-strength and pressure-resistant PE pipe according to claim 3, characterized in that: The support rings (6) are in an I-shaped structure in cross section, the inner edge of the support rings (6) is connected with the pipe body (1), and the outer edge of the support rings (6) extends to the outside of the pipe body (1).

5. The high-strength, pressure-resistant PE pipe according to claim 4, characterized in that: The outer surface of the protective layer (2) is provided with anti-skid lines (8) in the form of annular grooves.

6. The high-strength, pressure-resistant PE pipe according to claim 5, characterized in that: The buffer layer (3) and the protective layer (2) are further provided with a compression-resistant filling layer (9) therebetween, and the compression-resistant filling layer (9) is composed of polyurethane foaming material.

7. The high-strength, pressure-resistant PE pipe according to claim 6, characterized in that: The compression-resistant filling layer (9) is embedded with a metal wire mesh (10) in a net-like distribution.

8. The high-strength, pressure-resistant PE pipe according to claim 7, characterized in that: The support layer (4) further comprises reinforcing ribs (11) which are arranged in an inclined manner at the intersection nodes of the support rings (6).

9. The high-strength pressure-resistant PE pipe according to claim 1, characterized in that: The inner wall of the pipe body (1) is coated with a wear-resistant coating (14) composed of polytetrafluoroethylene material.

10. The high-strength, pressure-resistant PE pipe according to any one of claims 1 to 9, characterized in that: The two ends of the protective layer (2) are provided with flange connecting portions (12) which are uniformly provided with bolt holes (13).

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