Tough HDPE plastic pipe

Abstract

The utility model provides a tough HDPE plastic pipe, and relates to the technical field of HDPE pipes. The tough HDPE plastic pipe is obtained. According to the tough HDPE plastic pipe, the reinforcing ribs with the non-circular cross sections are arranged in the pipe body, so that external force impact can be more effectively dispersed and absorbed, the overall impact resistance of the pipe body is improved, especially under the condition of local stress, local damage caused by stress concentration is avoided, meanwhile, the wall thickness and the strength of the pipe are increased due to the existence of the reinforcing ribs, and the service life of the pipe is prolonged. Meanwhile, the middle layer made of the reinforced fiber material is arranged between the inner layer and the outer layer, so that external impact force can be effectively dispersed and absorbed, the impact resistance of the pipe is effectively improved, breakage caused by local stress concentration is prevented, the compressive strength of the pipe is improved, and the service life of the pipe is prolonged. The stability of the pipe under long-term high pressure is improved, the service life of the pipe is prolonged, and actual application is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of HDPE pipe technology, specifically to a strong and tough HDPE plastic pipe. Background Technology

[0002] High-density polyethylene (HDPE) plastic pipes are made from high-density polyethylene resin as the main raw material through an extrusion molding process. Due to their advantages such as light weight, corrosion resistance, and ease of installation, HDPE plastic pipes are widely used in water supply and drainage, gas transmission, and other fields.

[0003] However, traditional HDPE plastic pipes are prone to deformation or even rupture when subjected to external impact loads or long-term internal pressure due to insufficient toughness. These problems not only affect the safety and durability of the pipes, but also increase the cost of maintenance and replacement.

[0004] Therefore, those skilled in the art provide a strong and tough HDPE plastic pipe to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a strong and tough HDPE plastic pipe, which solves the problem of insufficient toughness of traditional HDPE plastic pipes mentioned in the background art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a strong and tough HDPE plastic pipe, comprising a pipe body, wherein the pipe body is composed of an inner layer, a middle layer and an outer layer, wherein the middle layer is disposed between the inner layer and the outer layer, and the middle layer is made of reinforcing fiber material;

[0007] The outer layer is internally fitted with reinforcing ribs, and the cross-section of the reinforcing ribs is set to a non-circular structure.

[0008] By employing the aforementioned technical solution, reinforcing ribs with non-circular cross-sections are installed inside the pipe body. This effectively disperses and absorbs external impacts, improving the overall impact resistance of the pipe body. Especially under localized stress, it prevents localized damage caused by stress concentration. Simultaneously, the presence of reinforcing ribs increases the pipe's wall thickness and strength, effectively enhancing its resistance to internal pressure. Furthermore, by installing an intermediate layer made of reinforcing fiber material between the inner and outer layers, external impact forces are effectively dispersed and absorbed, further improving the pipe's impact resistance, preventing cracking due to localized stress concentration, increasing the pipe's compressive strength, enhancing its stability under long-term high pressure, and extending its service life, which is beneficial for practical applications.

[0009] Preferably, both the inner and outer layers are made of HDPE material.

[0010] The above technical solutions provide the basic structure of the pipe and good chemical corrosion resistance.

[0011] Preferably, the thickness of the intermediate layer accounts for 20%-50% of the total thickness of the tube.

[0012] The above technical solution achieves a balance between improving strength and controlling costs.

[0013] Preferably, the reinforcing rib is configured as a spiral structure, and the reinforcing rib is also made of reinforcing fiber material, and the inner surface of the outer layer is provided with a spiral groove for accommodating the reinforcing rib.

[0014] By using the above technical solution, setting the reinforcing ribs to a spiral structure can provide a more uniform reinforcement effect and effectively resist torsional torque.

[0015] Preferably, the reinforcing fiber material is glass fiber, carbon fiber, or aramid fiber.

[0016] The above technical solutions ensure material compatibility and overall structural stability.

[0017] Preferably, the cross-section of the reinforcing rib is set as a triangle, rectangle or trapezoid.

[0018] The above technical solutions can more effectively disperse and absorb local stress, prevent local damage caused by stress concentration, and thus improve the overall impact resistance and pressure resistance of the pipe.

[0019] This utility model provides a strong and tough HDPE plastic pipe with the following beneficial effects:

[0020] 1. This strong and tough HDPE plastic pipe, by setting non-circular cross-section reinforcing ribs inside the pipe body, can more effectively disperse and absorb external impact, improve the overall impact resistance of the pipe body, especially under local stress, avoid local damage caused by stress concentration. At the same time, the presence of reinforcing ribs also increases the wall thickness and strength of the pipe, effectively improving the pipe's resistance to internal pressure, extending the service life of the pipe, and benefiting practical applications.

[0021] 2. This strong and tough HDPE plastic pipe, by setting an intermediate layer made of reinforcing fiber material between the inner and outer layers, can effectively disperse and absorb external impact force, effectively improve the impact resistance of the pipe, prevent cracking caused by local stress concentration, increase the compressive strength of the pipe, and improve the stability of the pipe under long-term high pressure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0023] Figure 2 for Figure 1 A cross-sectional diagram of the internal structure;

[0024] Figure 3 This is a cross-sectional view of the outer and internal structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the reinforcing rib structure of this utility model.

[0026] In the diagram: 1. Pipe body; 101. Inner layer; 102. Middle layer; 103. Outer layer; 2. Spiral groove; 3. Reinforcing rib. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a strong and tough HDPE plastic pipe, which aims to overcome the problem of insufficient toughness of existing HDPE plastic pipes.

[0029] This robust HDPE plastic pipe consists of a pipe body 1, which employs a three-layer structure: an inner layer 101, a middle layer 102, and an outer layer 103. Both the inner and outer layers 101 and 103 are made of high-density polyethylene (HDPE), providing the pipe's basic structure and excellent chemical resistance. The middle layer 102 is made of reinforcing fiber material, serving as a reinforcement layer that significantly improves the pipe's strength and rigidity. The thickness of the middle layer 102 is controlled between 20% and 50% of the total thickness of the pipe body 1, achieving a balance between strength enhancement and cost control.

[0030] The reinforcing fiber material used in the intermediate layer 102 can be glass fiber, carbon fiber or aramid fiber, and the most suitable material can be selected according to the specific application scenario and performance requirements.

[0031] To further enhance the local compressive strength and impact resistance of the pipe, reinforcing ribs 3 are embedded inside the outer layer 103. The reinforcing ribs 3 are also made of reinforcing fiber material, consistent with the material of the intermediate layer 102, to ensure material compatibility and overall structural stability.

[0032] Unlike traditional reinforcing structures, the reinforcing rib 3 in this invention adopts a non-circular structure, such as a triangle, rectangle, or trapezoid. This non-circular structural design can more effectively disperse and absorb local stress, prevent local damage caused by stress concentration, and thus improve the overall impact resistance and compressive strength of the pipe.

[0033] like Figure 4 In the illustrated embodiment, the reinforcing ribs 3 are arranged in a spiral pattern, which provides a more uniform reinforcement effect and effectively resists torsional torque. Furthermore, the outer layer 103 has spiral grooves 2 inside to accommodate the reinforcing ribs 3.

[0034] Through the ingenious combination of the aforementioned three-layer structural design and the non-circular spiral reinforcing rib 3, the high-strength HDPE plastic pipe provided by this invention achieves a significant performance improvement. Its impact strength and pressure resistance are greatly enhanced, while maintaining the advantages of HDPE material such as light weight and corrosion resistance, reducing overall costs and making it widely applicable in water supply and drainage, gas transmission, and other fields. The selection of different types of reinforcing fiber materials, as well as the adjustment of the thickness of the intermediate layer 102 and the geometry of the reinforcing rib 3, allows for customized design according to different application scenarios, meeting various demanding working conditions.

[0035] Working principle:

[0036] When in use, when the outside of the pipe body 1 is subjected to external impact, the reinforcing ribs 3 with non-circular cross-sections set inside the pipe body 1 can more effectively disperse and absorb the impact of the external force, improve the overall impact resistance of the pipe body 1, especially under local stress, avoid local damage caused by stress concentration. At the same time, the presence of the reinforcing ribs 3 also increases the wall thickness and strength of the pipe, effectively improving the pipe's resistance to internal pressure.

[0037] Meanwhile, by setting an intermediate layer 102 made of reinforcing fiber material between the inner layer 101 and the outer layer 103, external impact force can be effectively dispersed and absorbed, and the impact resistance of the pipe can be effectively improved, preventing cracking caused by local stress concentration. Furthermore, the compressive strength of the pipe is increased, the stability of the pipe under long-term high pressure is improved, and the service life of the pipe is extended, which is beneficial to practical applications.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A strong and tough HDPE plastic pipe, comprising a pipe body (1), characterized in that, The tube body (1) is composed of an inner layer (101), a middle layer (102) and an outer layer (103), wherein the middle layer (102) is disposed between the inner layer (101) and the outer layer (103), and the middle layer (102) is made of reinforcing fiber material; The outer layer (103) is internally fitted with reinforcing ribs (3), the cross-section of which is set as a non-circular structure.

2. The strong and tough HDPE plastic pipe according to claim 1, characterized in that: Both the inner layer (101) and the outer layer (103) are made of HDPE material.

3. The strong and tough HDPE plastic pipe according to claim 1, characterized in that: The thickness of the intermediate layer (102) accounts for 20%-50% of the total thickness of the tube body (1).

4. The strong and tough HDPE plastic pipe according to claim 1, characterized in that: The reinforcing rib (3) is configured as a spiral structure and is also made of reinforcing fiber material. The outer layer (103) has a spiral groove (2) inside for accommodating the reinforcing rib (3).

5. The strong and tough HDPE plastic pipe according to claim 4, characterized in that: The reinforcing fiber material is glass fiber, carbon fiber, or aramid fiber.

6. The strong and tough HDPE plastic pipe according to claim 1, characterized in that: The cross-section of the reinforcing rib (3) is set as a triangle, rectangle or trapezoid.

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