Impact-resistant high-strength PE protective pipe

Abstract

The utility model relates to PE protection pipe technical field, specifically disclose a high -strength PE protection pipe of impact resistance, including pipe body, the pipe body includes high density polyethylene inner layer, the outside of high density polyethylene inner layer is provided with the fiber reinforced layer, the outside of fiber reinforced layer is provided with the impact -resistant modified polyethylene middle layer, the outside of impact -resistant modified polyethylene middle layer is provided with wear -resistant protective outer layer, through multilayer composite structure, the comprehensive mechanical properties of pipe material have been improved significantly: high density inner layer ensures sealed pressure -resistance, fiber reinforced layer provides core tensile strength, modified middle layer containing ceramic microbead absorbs impact energy efficiently, wear -resistant outer layer resists external wear, the annular reinforcing rib of metal support net greatly enhances the ability of pipe body to resist local impact and extrusion, prevents the deformation of crushing, the overall structure guarantees excellent impact resistance and wear resistance at the same time, gives consideration to good flexibility and construction adaptability, long service life, and the comprehensive cost benefit is high.

Description

Technical Field

[0001] This utility model relates to the field of PE protective pipe technology, and specifically discloses a high-strength PE protective pipe with impact resistance. Background Technology

[0002] PE is a type of plastic pipe characterized by its corrosion resistance, impact resistance, and long service life. It is mainly used for water supply pipes and gas pipes. PE resin is polymerized from ethylene monomers. Due to differences in polymerization reaction conditions such as pressure and temperature, resins of different densities can be obtained, resulting in high-density polyethylene, medium-density polyethylene, and low-density polyethylene. When processing different types of PE pipes, different resin grades are selected based on their application conditions, and the requirements for extruders and molds also differ.

[0003] However, conventional PE pipes lack sufficient impact resistance and are prone to breakage due to rockfalls in mining, tunnel, and other similar environments. Existing technologies improve strength by increasing wall thickness, but this results in higher costs and reduced flexibility. Utility Model Content

[0004] This utility model proposes a high-strength PE protective pipe with impact resistance. Through a multi-layer composite structure, the comprehensive mechanical properties of the pipe are significantly improved. The overall structure ensures excellent impact resistance and wear resistance while taking into account good flexibility and construction adaptability. It has a long service life and high overall cost-effectiveness.

[0005] This utility model is implemented as follows: a high-strength PE protective pipe with impact resistance includes a pipe body, the pipe body including a high-density polyethylene inner layer, a fiber reinforcement layer disposed on the outer side of the high-density polyethylene inner layer, an impact-resistant modified polyethylene intermediate layer disposed on the outer side of the fiber reinforcement layer, and a wear-resistant protective outer layer disposed on the outer side of the impact-resistant modified polyethylene intermediate layer. The outer wall of the pipe body is fixedly connected with a plurality of axially uniformly distributed annular reinforcing ribs, and the annular reinforcing ribs are embedded in a metal support mesh.

[0006] As a preferred embodiment of the impact-resistant high-strength PE protective pipe of this utility model, the high-density polyethylene inner layer, fiber reinforcement layer, impact-resistant modified polyethylene intermediate layer, and wear-resistant protective outer layer are all bonded together with adhesive between adjacent layers.

[0007] As a preferred embodiment of the impact-resistant high-strength PE protective pipe of this utility model, the fiber reinforcement layer is a composite braided layer of glass fiber and polyethylene.

[0008] As a preferred embodiment of the impact-resistant high-strength PE protective pipe of this utility model, the wear-resistant protective outer layer is made of thermoplastic polyurethane material with a thickness of 0.3-0.8mm.

[0009] As a preferred embodiment of the impact-resistant high-strength PE protective pipe of this utility model, the metal support mesh is a 316L stainless steel woven mesh with a mesh count of 30-50.

[0010] As a preferred embodiment of the impact-resistant high-strength PE protective pipe of this utility model, the cross-section of the annular reinforcing rib is trapezoidal, the width of its base is 1.8 to 2.5 times the thickness of the pipe wall, the height is 2 to 3 times the thickness of the pipe wall, and the distance between adjacent reinforcing ribs is 1 to 1.5 times the outer diameter of the pipe.

[0011] As a preferred embodiment of the impact-resistant high-strength PE protective pipe of this utility model, the impact-resistant modified polyethylene intermediate layer contains a plurality of ceramic microspheres uniformly dispersed therein, the particle size of the ceramic microspheres being 50-200μm.

[0012] The beneficial effects of this utility model are:

[0013] This invention significantly improves the overall mechanical properties of the pipe through a multi-layer composite structure: a high-density inner layer ensures sealing and pressure resistance, a fiber-reinforced layer provides core tensile strength, a modified intermediate layer containing ceramic microspheres efficiently absorbs impact energy, a wear-resistant outer layer resists external wear, and annular reinforcing ribs with metal support mesh greatly enhance the pipe's ability to resist local impacts and compression, preventing crushing and deformation. The overall structure ensures excellent impact resistance and wear resistance while also taking into account good flexibility and construction adaptability, resulting in a long service life and high overall cost-effectiveness. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is a diagram showing the overall external structure of the present invention;

[0017] Figure 3 This is a structural diagram of the internal structure of the impact-resistant modified polyethylene interlayer of this utility model.

[0018] The markings in the diagram are: 1. Pipe body; 2. High-density polyethylene inner layer; 3. Fiber reinforcement layer; 4. Impact-resistant modified polyethylene intermediate layer; 5. Wear-resistant protective outer layer; 6. Annular reinforcing ribs; 7. Metal support mesh; 8. Ceramic microspheres. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0020] Please see Figure 1-3 A high-strength PE protective pipe with impact resistance includes a pipe body 1, the pipe body 1 including a high-density polyethylene inner layer 2, a fiber reinforcement layer 3 disposed on the outside of the high-density polyethylene inner layer 2, an impact-resistant modified polyethylene intermediate layer 4 disposed on the outside of the fiber reinforcement layer 3, and a wear-resistant protective outer layer 5 disposed on the outside of the impact-resistant modified polyethylene intermediate layer 4. Multiple axially uniformly distributed annular reinforcing ribs 6 are fixedly connected to the outer wall of the pipe body 1, and a metal support mesh 7 is embedded inside the annular reinforcing ribs 6.

[0021] In this embodiment: the high-density polyethylene inner layer 2 provides basic sealing and pressure resistance, and its outer side is tightly composite with a fiber reinforcement layer 3. The fiber reinforcement layer 3 is a composite braided layer of glass fiber and polyethylene to significantly improve the overall tensile strength and stiffness of the pipe and prevent overall deformation and breakage. An impact-resistant modified polyethylene intermediate layer 4 is set outside the fiber reinforcement layer 3, in which ceramic microspheres 8 with a particle size of 50-200μm are uniformly dispersed. The modified matrix and rigid microparticles disperse and absorb impact energy to effectively buffer the impact of falling rocks. The impact-resistant modified polyethylene intermediate layer 4 is covered with a wear-resistant protective outer layer 5, which is made of thermoplastic polyurethane, directly resisting external friction and scratching and contributing toughness. At the same time, multiple axially uniformly distributed annular reinforcing ribs 6 are fixedly connected to the outer wall of the pipe body 1, which significantly increases local stiffness and bending resistance. The annular reinforcing ribs 6 are embedded with a metal support mesh 7, which provides strong radial support to prevent local crushing of the pipe body.

[0022] As a technical optimization of this utility model, the high-density polyethylene inner layer 2, the fiber reinforcement layer 3, the impact-resistant modified polyethylene intermediate layer 4, and the wear-resistant protective outer layer 5 are all bonded together with an adhesive between adjacent layers.

[0023] In this embodiment: ensuring tight bonding between layers to prevent delamination, guaranteeing the integrity of the composite structure, and enabling impact loads to be effectively transferred and dispersed between layers.

[0024] As a technical optimization of this utility model, the fiber reinforcement layer 3 is a composite woven layer of glass fiber and polyethylene.

[0025] In this embodiment: glass fiber provides high strength and high modulus, while the composite weaving with polyethylene ensures good compatibility and bonding with the inner and outer PE layers, significantly improving the axial strength and circumferential rigidity of the tube and effectively resisting tensile and bending deformation.

[0026] As a technical optimization of this utility model, the wear-resistant protective outer layer 5 is made of thermoplastic polyurethane material with a thickness of 0.3 to 0.8 mm.

[0027] In this embodiment, thermoplastic polyurethane (TPU) has excellent abrasion resistance, elasticity and tear resistance. This thickness range provides sufficient abrasion protection to resist friction and scratches from rocks, soil, etc., while maintaining good flexibility and impact resistance of the outer layer, avoiding excessive thickness that would lead to excessive cost or reduced flexibility.

[0028] As a technical optimization of this utility model, the metal support mesh 7 is a 316L stainless steel woven mesh with a mesh count of 30-50.

[0029] In this embodiment: 316L stainless steel provides excellent corrosion resistance and strength. The woven mesh in this mesh range has sufficient rigidity and support strength to resist external impact pressure, and also has a certain degree of flexibility to facilitate processing and adapt to pipe deformation.

[0030] As a technical optimization of this utility model, the cross-section of the annular reinforcing rib 6 is trapezoidal, with the width of its base being 1.8 to 2.5 times the thickness of the tube wall, the height being 2 to 3 times the thickness of the tube wall, and the spacing between adjacent reinforcing ribs being 1 to 1.5 times the outer diameter of the tube.

[0031] In this embodiment, the trapezoidal cross-section provides a stable support structure and a large moment of inertia to enhance bending resistance, significantly improving the local stiffness, impact resistance, and ability to resist external loads of the pipe, preventing local dents or cracks.

[0032] As a technical optimization of this utility model, multiple ceramic microspheres 8 are uniformly dispersed in the impact-resistant modified polyethylene intermediate layer 4, and the particle size of the ceramic microspheres 8 is 50-200μm.

[0033] In this embodiment, ceramic microspheres 8 are uniformly dispersed as rigid particles in the impact-resistant modified polyethylene intermediate layer 4. When subjected to impact, they can induce a large number of silver streaks and shear bands in the matrix, effectively absorbing and dissipating impact energy.

[0034] The working principle and usage process of this utility model are as follows: When an external impact (such as falling rocks) acts on the pipe body 1, the wear-resistant protective outer layer 5 first bears the friction and initial impact, and its toughness helps to disperse some of the energy; the impact force is then transmitted to the impact-resistant modified polyethylene intermediate layer 4, where ceramic microspheres 8 induce a large number of microcracks and plastic deformation areas in the matrix, effectively absorbing and dissipating the impact energy; the remaining impact load is transmitted through the fiber-reinforced layer 3 (whose high-strength fibers bear the main tensile stress), which significantly improves the overall strength of the pipe body and prevents breakage; the impact energy is finally transmitted to the inner layer and the high-density polyethylene inner layer 2 bears the basic internal pressure; at the same time, the annular reinforcing ribs 6 on the outer wall of the pipe body and the metal support mesh 7 embedded inside provide strong local support near the impact point, resisting the indentation deformation of the pipe wall. Its trapezoidal cross section and axial uniform distribution characteristics effectively disperse the local concentrated stress generated by the impact, preventing the pipe body from crushing and breaking, while the metal support mesh 7 provides key radial support strength.

[0035] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do 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. Therefore, they should not be construed as limitations on this utility model.

[0036] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A high-strength PE protective pipe with impact resistance, comprising a pipe body (1), characterized in that: The tube body (1) includes a high-density polyethylene inner layer (2), a fiber reinforcement layer (3) is provided on the outside of the high-density polyethylene inner layer (2), an impact-resistant modified polyethylene intermediate layer (4) is provided on the outside of the fiber reinforcement layer (3), and a wear-resistant protective outer layer (5) is provided on the outside of the impact-resistant modified polyethylene intermediate layer (4). Multiple axially uniformly distributed annular reinforcing ribs (6) are fixedly connected to the outer wall of the tube body (1), and the annular reinforcing ribs (6) are embedded in a metal support mesh (7).

2. The impact-resistant high-strength PE protective pipe according to claim 1, characterized in that: The high-density polyethylene inner layer (2), fiber reinforcement layer (3), impact-resistant modified polyethylene intermediate layer (4), and wear-resistant protective outer layer (5) are all bonded together with each other by adhesive.

3. The impact-resistant high-strength PE protective pipe according to claim 1, characterized in that: The fiber reinforcement layer (3) is a composite woven layer of glass fiber and polyethylene.

4. The impact-resistant high-strength PE protective pipe according to claim 1, characterized in that: The wear-resistant protective outer layer (5) is made of thermoplastic polyurethane with a thickness of 0.3 to 0.8 mm.

5. The impact-resistant high-strength PE protective pipe according to claim 1, characterized in that: The metal support mesh (7) is a 316L stainless steel woven mesh with a mesh size of 30 to 50.

6. The impact-resistant high-strength PE protective pipe according to claim 1, characterized in that: The cross-section of the annular reinforcing rib (6) is trapezoidal, with the width of its base being 1.8 to 2.5 times the thickness of the tube wall, the height being 2 to 3 times the thickness of the tube wall, and the spacing between adjacent reinforcing ribs being 1 to 1.5 times the outer diameter of the tube.

7. The impact-resistant high-strength PE protective pipe according to claim 1, characterized in that: The impact-resistant modified polyethylene intermediate layer (4) contains a plurality of ceramic microspheres (8) uniformly dispersed within it, the ceramic microspheres (8) having a particle size of 50 to 200 μm.

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