High-elongation-at-break polyethylene pipe for water supply

Abstract

According to the technical scheme, the high-elongation-at-break polyethylene pipe for water supply is characterized by comprising a polyethylene main body layer, an EVOH composite pipe layer is arranged on the outer circle wall of the polyethylene main body, and a protection assembly is arranged between the polyethylene main body and the EVOH composite pipe layer. The EVOH composite pipe is used for reducing damage of stones and other hard objects in water flow in the pipe to the pipeline, the polyethylene main body layer is arranged, basic strength and toughness are provided, the high elongation at break characteristic enables the pipe to cope with foundation settlement and end load, deformation or damage caused by external pressure is reduced, the EVOH composite pipe layer is arranged, and therefore the pipe is not prone to deformation or damage caused by external pressure. Compared with the prior art, the pipe has good acid and alkali resistance, meanwhile, the flexibility of the pipe is improved, damage to the pipe is reduced, the protection assembly is arranged, the impact force of hard objects is effectively dispersed and buffered, the protection assembly can protect the integrity of the pipe, the fracture or perforation risk caused by external impact is reduced, and therefore normal operation and safety of a water supply system are guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of polyethylene pipes for water supply with high elongation at break, and specifically to a polyethylene pipe for water supply with high elongation at break. Background Technology

[0002] With the continuous development of China's economy, the demand for infrastructure construction is also steadily increasing. Water supply systems are an important part of infrastructure, and the demand for pipe materials is also increasing. Polyethylene pipes, with their excellent corrosion resistance, impact resistance, low density and good processing performance, are gradually becoming the preferred material for water supply network systems. In particular, high elongation at break polyethylene pipes, which generally have an elongation at break of more than 50%, have high toughness and can better adapt to uneven settlement of the pipe foundation, effectively resisting foundation settlement and end loads.

[0003] In traditional technology, due to the increase in soil pressure, ordinary PE pipes may not be able to effectively resist external pressure due to the flexibility of the material itself, resulting in deformation or damage. During the laying and burial process, the surface of the pipe may be scratched by sharp objects, which will lead to stress concentration and cracking. Due to the material properties or the influence of the external environment, PE pipes may experience stress cracking, affecting their service life.

[0004] During use, it was found that as soil pressure increases, ordinary PE pipes, due to their inherent flexibility, may not be able to effectively resist external pressure, leading to pipe deformation or damage. This is particularly noticeable in areas with significant foundation settlement. During laying and burial, the surface of PE pipes is easily scratched by sharp objects, causing cracking and seriously affecting the service life and safety of the pipes. While PE pipes have excellent corrosion resistance, impact resistance, and good processing performance, the limitations of their material properties may prevent them from meeting all usage requirements when facing complex and variable underground environments. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a polyethylene pipe for water supply with high elongation at break, solving the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A high elongation at break polyethylene pipe for water supply includes a polyethylene body layer, an EVOH composite pipe layer disposed on the outer circular wall of the polyethylene body, and a protective component disposed between the polyethylene body and the EVOH composite pipe layer to reduce damage to the pipe caused by stones and other hard objects in the water flow.

[0008] By adopting the above technical solution, the polyethylene main layer provides basic strength and toughness. The high elongation at break enables the pipe to withstand foundation settlement and end loads, reducing deformation or damage caused by external pressure. The EVOH composite pipe layer provides good acid and alkali resistance, while improving the pipe's flexibility and reducing damage. The protective components effectively disperse and buffer the impact of hard objects, protecting the integrity of the pipe and reducing the risk of rupture or perforation caused by external impacts, thereby ensuring the normal operation and safety of the water supply system.

[0009] Preferably, the protective component includes a first mounting layer, which is fixedly mounted on the outer circular wall of the polyethylene main body layer. A second mounting layer is disposed on the outer circular wall of the first mounting layer, and the second mounting layer is fixedly mounted on the inner circular wall of the EVOH composite pipe layer. A plurality of rows of arc-shaped spring pieces are provided between the first mounting layer and the second mounting layer.

[0010] By adopting the above technical solution and setting up a first installation layer and a second installation layer, a stable support platform is provided for installing the arc-shaped spring. The arc-shaped spring has excellent elasticity and toughness, and can effectively absorb and disperse the impact force of hard objects such as stones and gravel from the water flow in the pipe.

[0011] Preferably, a cross-shaped reinforcing rib is fixedly installed on the inner circular wall of the polyethylene main layer.

[0012] By adopting the above technical solution and setting cross-shaped reinforcing ribs, the rigidity and strength of the pipe are increased. Under conditions such as foundation settlement, changes in ground load, or pipe compression, the cross-shaped reinforcing ribs can significantly improve the compressive strength of the pipe.

[0013] Preferably, an insulation layer is fixedly installed on the outer circular wall of the EVOH composite pipe layer.

[0014] By adopting the above technical solution and setting up a temperature layer, the heat exchange between the water flow in the pipe and the external environment is reduced, thereby maintaining a stable water temperature.

[0015] Preferably, an elastic mesh layer is fixedly installed on the outer circular wall of the insulation layer.

[0016] By adopting the above technical solution and setting an elastic mesh layer, the pipe has good elasticity and toughness, which can further disperse and buffer external impact forces, and prevent the pipe from being damaged by external forces during transportation, installation or use.

[0017] Preferably, a cross-linked polyethylene layer is fixedly installed on the outer circular wall of the elastic mesh layer.

[0018] By adopting the above technical solution and setting a cross-linked polyethylene layer, the pipe has high hardness and wear resistance, which protects the pipe from external environmental erosion and damage, such as ultraviolet radiation and chemical corrosion. At the same time, the cross-linked polyethylene layer also improves the overall strength and stability of the pipe, ensuring the long-term stable operation of the water supply system.

[0019] In summary, the present invention has the following main advantages:

[0020] By incorporating a polyethylene main layer, basic strength and toughness are provided. The high elongation at break allows the pipe to withstand foundation settlement and end loads, reducing deformation or damage caused by external pressure. The EVOH composite pipe layer offers good acid and alkali resistance while enhancing pipe flexibility and reducing damage. Protective components effectively disperse and buffer the impact of hard objects, protecting the pipe's integrity and reducing the risk of cracking or perforation due to external impacts, thus ensuring the normal operation and safety of the water supply system. The first and second mounting layers provide a stable support platform for the installation of arc-shaped spring clips. These arc-shaped spring clips, with their excellent elasticity and toughness, effectively absorb and disperse stones and sand from the water flow within the pipe. To mitigate the impact of hard objects like gravel on the pipes, cross-shaped reinforcing ribs are installed, increasing the rigidity and strength of the pipes. Under conditions of foundation settlement, changes in ground load, or pipe compression, the cross-shaped reinforcing ribs significantly improve the pipes' compressive strength. A thermal layer is incorporated to reduce heat exchange between the water flow inside the pipe and the external environment, thus maintaining stable water temperature. An elastic mesh layer, with good elasticity and toughness, further disperses and buffers external impacts, preventing damage to the pipes during transportation, installation, or use. A cross-linked polyethylene layer, with high hardness and wear resistance, protects the pipes from external environmental erosion and damage, such as ultraviolet radiation and chemical corrosion. Simultaneously, the cross-linked polyethylene layer improves the overall strength and stability of the pipes, ensuring the long-term stable operation of the water supply system. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0023] Reference numerals in the attached drawings: 1. Polyethylene main layer; 2. EVOH composite pipe layer; 3. Arc-shaped spring sheet; 4. Cross reinforcing rib; 5. First mounting layer; 6. Second mounting layer; 7. Insulation layer; 8. Elastic mesh layer; 9. Cross-linked polyethylene layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] refer to Figure 1 and Figure 2 A high elongation at break polyethylene pipe for water supply includes a polyethylene main layer 1 and an EVOH composite pipe layer 2 disposed on the outer circumferential wall of the polyethylene main layer 1. A protective component is disposed between the polyethylene main layer 1 and the EVOH composite pipe layer 2 to reduce damage to the pipe caused by stones and other hard objects in the water flow. The polyethylene main layer 1 provides basic strength and toughness, and the high elongation at break allows the pipe to withstand foundation settlement and end loads, reducing deformation or damage caused by external pressure. The EVOH composite pipe layer 2 has good acid and alkali resistance, while improving the flexibility of the pipe and reducing damage. The protective component effectively disperses and buffers the impact force of these hard objects, protecting the pipe. The integrity of the pipe reduces the risk of cracking or perforation caused by external impact, thereby ensuring the normal operation and safety of the water supply system. The protective component includes a first mounting layer 5, which is fixedly installed on the outer circular wall of the polyethylene main body layer 1. The second mounting layer 6 is set on the outer circular wall of the first mounting layer 5. The second mounting layer 6 is fixedly installed on the inner circular wall of the EVOH composite pipe layer 2. Several rows of arc-shaped spring pieces 3 are set between the first mounting layer 5 and the second mounting layer 6. The first mounting layer 5 and the second mounting layer 6 provide a stable support platform for the installation of the arc-shaped spring pieces 3. The arc-shaped spring pieces 3 have excellent elasticity and toughness, and can effectively absorb and disperse the impact force of hard objects such as stones and gravel from the water flow in the pipe.

[0026] refer to Figure 1 and Figure 2The cross-shaped reinforcing rib 4 is fixedly installed on the inner circular wall of the polyethylene main layer 1. The cross-shaped reinforcing rib 4 increases the rigidity and strength of the pipe. Under conditions such as foundation settlement, changes in ground load, or pipe compression, the cross-shaped reinforcing rib 4 can significantly improve the pipe's compressive strength. The insulation layer 7 is fixedly installed on the outer circular wall of the EVOH composite pipe layer 2. The insulation layer 7 reduces heat exchange between the water flow inside the pipe and the external environment, thereby maintaining stable water temperature. The elastic mesh layer 8 is fixedly installed on the outer circular wall of the insulation layer 7. The elastic mesh layer 8 has good elasticity and toughness, which can further disperse and buffer external impact forces, preventing damage to the pipe during transportation, installation, or use due to external forces. The cross-linked polyethylene layer 9 is fixedly installed on the outer circular wall of the elastic mesh layer 8. The cross-linked polyethylene layer 9 has high hardness and wear resistance, protecting the pipe from external environmental erosion and damage, such as ultraviolet radiation and chemical corrosion. At the same time, the cross-linked polyethylene layer 9 also improves the overall strength and stability of the pipe, ensuring the long-term stable operation of the water supply system.

[0027] Working principle: Please refer to Figures 1-2 As shown, during use, when stones or other hard materials appear in the water flow inside the polyethylene main layer 1, the water flow will move rapidly, generating a large impact force. When the stones or hard materials touch the polyethylene main layer 1, the impact force will spread to the first mounting layer 5 and then to the arc-shaped spring 3. The arc-shaped spring 3 deforms and absorbs the impact force, preventing the polyethylene main layer 1 from being damaged by the large impact force. The cross-shaped reinforcing rib 4 ensures that the pipe will not deform or be damaged under conditions such as foundation settlement, changes in ground load, or pipe compression. The high elongation at break of the polyethylene main layer 1 enables the pipe to cope with foundation settlement and end loads, reducing deformation or damage caused by external pressure.

[0028] 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 polyethylene pipe for water supply with high elongation at break, comprising a polyethylene body layer (1), characterized in that, An EVOH composite pipe layer (2) is provided on the outer circular wall of the polyethylene main layer (1). A protective component is provided between the polyethylene main layer (1) and the EVOH composite pipe layer (2) to reduce the damage to the pipe caused by stones and other hard objects in the water flow. The protective component includes a first mounting layer (5), which is fixedly installed on the outer circular wall of the polyethylene main layer (1). A second mounting layer (6) is provided on the outer circular wall of the first mounting layer (5), which is fixedly installed on the inner circular wall of the EVOH composite pipe layer (2). Several rows of arc-shaped spring pieces (3) are provided between the first mounting layer (5) and the second mounting layer (6).

2. The polyethylene pipe for water supply with high elongation at break according to claim 1, characterized in that, A cross-shaped reinforcing rib (4) is fixedly installed on the inner circular wall of the polyethylene main layer (1).

3. A polyethylene pipe for water supply with high elongation at break according to claim 1, characterized in that, An insulation layer (7) is fixedly installed on the outer circular wall of the EVOH composite pipe layer (2).

4. A polyethylene pipe for water supply with high elongation at break according to claim 3, characterized in that, An elastic mesh layer (8) is fixedly installed on the outer circular wall of the insulation layer (7).

5. A polyethylene pipe for water supply with high elongation at break according to claim 4, characterized in that, A cross-linked polyethylene layer (9) is fixedly installed on the outer circular wall of the elastic mesh layer (8).

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