PE winding pipe with reinforcing structure
By designing the structure of protective layer, reinforcement layer and inner lining layer in the PE winding tube and adding reinforcement strips to the outside, the problem of insufficient compressive resistance and tensile resistance of traditional PE winding tubes is solved, and higher pressure resistance is achieved and environmental resistance.
Patent Information
- Application Number
- CN202420077107.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-12
AI Technical Summary
When traditional PE winding tubes are subjected to large internal and external pressures or complex stress conditions, their compressive and tensile resistance are insufficient and they are prone to deformation or cracking. Existing reinforcement solutions such as increasing wall thickness or adding reinforcement materials are difficult to effectively solve the problem.
A protective layer, reinforcement layer and inner lining layer structure from the outside to the inside is designed. The protective layer is equipped with a curved structure protruding outwardly nested liner. The reinforcement layer remains in place with the liner. The outer side of the inner lining layer is A concave structure is provided, and a spiral wound reinforcement strip is added to the outside of the protective layer. A PE winding tube is formed by spiral winding and welding, and the reinforcement layer is filled with glass fiber or steel strip to improve strength.
It significantly improves the compressive and tensile resistance of the PE wound tube, can maintain its shape under high pressure or high load, is not easy to deform or break, and enhances its resistance to environmental factors and extends its service life.
Smart Images
Figure CN222229736U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PE winding pipes, in particular to a PE winding pipe with a reinforced structure. Background Art
[0002] Polyethylene (PE) spiral pipes have been widely used in water supply and drainage, power communication, gas transmission and other fields due to their unique performance and superior economy. However, during the use of traditional PE spiral pipes, due to their simple structure, limited compression and tensile resistance, they often deform and rupture, especially when subjected to large internal and external pressures or complex stress conditions. For example, in some underground projects, due to the influence of factors such as soil pressure and stratum movement, PE pipes often need to withstand large annular and axial pressures, which puts higher requirements on the compression and tensile resistance of PE spiral pipes.
[0003] To solve the above problems, the industry has proposed some solutions to strengthen the structure of PE spiral pipes. For example, some solutions add reinforcing materials such as glass fiber or steel belt to PE materials to improve the compressive and tensile resistance of the pipes by increasing the strength of the PE materials themselves. However, although this solution can provide a certain degree of strength enhancement, it is still difficult to ensure its overall stress resistance due to the structure of the PE spiral pipe itself.
[0004] Another solution is to increase the wall thickness of the PE spiral pipe to improve its compression and tensile resistance. Although this solution is simple, increasing the wall thickness will increase material consumption and production costs, and will also increase the weight of the pipe, causing inconvenience in installation and transportation. Moreover, simply increasing the wall thickness cannot effectively solve problems such as deformation and rupture, because when subjected to high pressure or complex stress conditions, the PE spiral pipe may still deform or rupture.
[0005] Therefore, how to design a PE winding pipe with a more optimized structure and better performance is an important issue currently facing the industry. Utility Model Content
[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a PE winding pipe with a reinforced structure, which has the advantages of structural optimization, superior compressive performance, strong resistance to environmental influences, etc., can meet the use requirements in various complex environments, and has high practical value and broad market prospects.
[0007] The technical solution adopted by the utility model to achieve the above purpose is: a PE winding pipe with a reinforced structure, including a protective layer, a reinforcement layer, and an inner lining layer arranged in sequence from the outside to the inside, the protective layer is of equal thickness at all locations, and the reinforcement layer is of equal thickness at all locations.
[0008] The protective layer is provided with a curved surface structure protruding outward, and a liner is embedded in the curved surface structure. The reinforcing layer is kept in contact with the outer wall of the liner. The outer surface of the lining layer is provided with a concave structure which is in the curved surface structure and keeps in contact with the lining layer, and the thickness of the concave structure is greater than the thickness of the rest of the lining layer.
[0009] The protective layer and the inner lining layer are kept of equal width, and the protective layer, the reinforcing layer, the inner lining layer and the liner are spirally wound and welded to form the PE wound pipe.
[0010] The protective layer is on the outermost side of the PE spiral pipe, which is mainly produced by extrusion molding of PE material. Depending on factors such as its laying scenario, anti-UV and anti-aging agents will be squeezed into the PE material to enhance the durability and resistance to environmental factors. Its function is to protect the internal reinforcement material and prevent it from being damaged by exposure to the environment.
[0011] The inner liner is located at the innermost side of the PE spiral pipe. As the part that directly contacts the fluid, it is usually made of high-density polyethylene (HDPE) or linear low-density polyethylene (LLDPE). These materials have good chemical stability, can resist corrosion from a variety of chemicals, and have excellent wear resistance and smoothness, which can reduce the flow resistance of the fluid.
[0012] The reinforcement layer is filled between the protective layer and the inner lining layer. It is usually made of PE and glass fiber or other reinforcing materials (such as steel belts) interwoven or wound to increase strength and rigidity. PE is a thermoplastic with good compression resistance and wear resistance. Glass fiber or steel belt can greatly improve the annular stiffness of the pipeline, enabling it to withstand higher internal and external pressures.
[0013] In some of the implementations, in order to ensure that the interfaces of the protective layer, reinforcement layer and lining layer of the produced PE wrapped pipe are all in one place, which affects the inherent strength of the PE wrapped pipe at the welding position, the cross-sections of the protective layer, reinforcement layer and lining layer are set on different planes.
[0014] In some of the implementations, when producing PE wrapped pipes, in order to further improve the structural strength of the welded interface on the protective layer and avoid damage to the protective layer that affects the service life of the internal layers and the overall quality of the PE pipe, the following technical solutions are provided.
[0015] It also includes a reinforcing strip spirally wound around the outside of the protective layer, the reinforcing strip is arranged at the interface between two adjacent protective layers, the reinforcing strip includes an arched section and straight sections connected to both ends of the arched section, the straight section is kept in contact with the protective layers on both sides of the interface, and the arched section is kept separated from the protective layer.
[0016] On the basis of the above technical solutions regarding the reinforcement strip, in order to ensure that the reinforcement strip can be effectively welded with the protective layers on both sides of the interface, to ensure the strength of the reinforcement strip itself while preventing it from being disturbed by the external environment, the following technical solutions are provided.
[0017] The reinforcing strip comprises an outer PE layer, a steel belt layer, and an inner PE layer which are sequentially arranged from the outside to the inside, and the inner PE layer on the straight section is welded to the outer wall of the protective layer.
[0018] In the above technical solution for the reinforcement strip, in order to ensure that the reinforcement strip can be accurately and stably welded on the protective layer and can effectively protect both sides of the steel strip layer, the following technical solution is provided.
[0019] Positioning strips are arranged on both sides of the protective layer, the straight sections on both sides of the reinforcing strips are located inside the positioning strips on both sides of the interface, and the sections on both sides of the outer PE layer and the inner PE layer are welded to the positioning strips.
[0020] Beneficial effects of the utility model:
[0021] 1. Structural optimization: The PE winding pipe adopts a structural design in which a protective layer, a reinforcement layer, and an inner lining layer are arranged in sequence from the outside to the inside and a liner is added, so that the pipe has higher pressure resistance and tensile resistance. Even under high pressure or large load, the pipe can maintain its shape without deformation or rupture.
[0022] 2. Strong resistance to environmental influences: The protective layer is mainly composed of PE material, and anti-ultraviolet and anti-aging agents can be added according to actual needs, so that the pipeline has stronger durability and ability to resist environmental factors. At the same time, due to the structural characteristics of the protective layer and reinforcement strips, it can effectively resist various stresses.
[0023] 4. Strengthen the protective layer: By adding spirally wound reinforcement strips on the outside of the protective layer, especially at the interface of the protective layer, the strength of the protective layer is significantly improved, effectively preventing the damage of the protective layer.
[0024] In summary, the PE winding pipe provided in this application has the advantages of optimized structure, superior compressive performance, strong resistance to environmental influences, etc. It can meet the use requirements in various complex environments and has high practical value and broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a detailed schematic diagram of the utility model after cutting;
[0026] Figure 2 For Figure 1 Based on this, the structural diagram of the adjacent two sides of the PE winding pipe when the structures are wound and welded;
[0027] Figure 3For Figure 2 Based on the structure diagram after adding reinforcement strips on the outside of the protective layer;
[0028] Figure 4 for Figure 3 Schematic diagram of the enlarged detail of part A.
[0029] In the figure: 1 protective layer, 11 curved surface structure, 12 positioning strip, 2 reinforcement layer, 3 inner lining layer, 31 concave structure, 4 liner, 5 reinforcement strip, 51 arch section, 52 straight section, 53 outer PE layer, 54 steel belt layer, 55 inner PE layer, 6 interface. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0031] See also Figure 1-4 A PE winding pipe with a reinforced structure comprises a protective layer 1, a reinforcing layer 2 and an inner lining layer 3 which are arranged in sequence from outside to inside. The protective layer 1 has the same thickness at all places, and the reinforcing layer 2 has the same thickness at all places.
[0032] The protective layer 1 is provided with a curved surface structure 11 protruding outward, and a liner 4 is embedded in the curved surface structure 11. The reinforcing layer 2 is kept in contact with the outer wall of the liner 4. A concave structure 31 is provided on the outer surface of the inner lining layer 3, which is in the curved surface structure 11 and keeps in contact with the inner lining layer 3, and the thickness of the concave structure 31 is greater than the thickness of the rest of the inner lining layer 3.
[0033] The protective layer 1 and the inner lining layer 3 are kept of equal width, and the protective layer 1, the reinforcing layer 2, the inner lining layer 3 and the liner 4 are spirally wound and welded to form a PE wound pipe.
[0034] The protective layer 1 is located on the outermost side of the PE wrapped pipe, which is mainly produced by extrusion molding of PE material. According to factors such as its laying scenario, anti-ultraviolet and anti-aging agents will be squeezed into the PE material to enhance the durability and resistance to environmental factors. Its function is to protect the internal reinforcement material and prevent it from being exposed to the environment and damaged.
[0035] The inner liner 3 is located at the innermost side of the PE spiral pipe, as the part directly in contact with the fluid, and is usually made of high-density polyethylene (HDPE) or linear low-density polyethylene (LLDPE). These materials have good chemical stability, can resist corrosion from a variety of chemical substances, and have excellent wear resistance and smoothness, which can reduce the flow resistance of the fluid.
[0036] The reinforcement layer 2 is filled between the protective layer 1 and the inner lining layer 3, and is usually made of PE and glass fiber or other reinforcement materials (such as steel belts) interwoven or wound to increase strength and rigidity. PE is a thermoplastic with good compression resistance and wear resistance. Glass fiber or steel belt can greatly improve the annular stiffness of the pipeline, enabling it to withstand higher internal and external pressures.
[0037] The curved surface structure 11 protruding outward on the protective layer 1 constitutes the ribs (ribs) of the PE spiral pipe, which can significantly increase the annular rigidity and axial strength of the pipe. Even under high pressure or heavy load, the pipe can maintain its shape without deformation or rupture. In addition, it can also be used as a part for connecting the pipe and the joint, providing a contact surface for easy fixing and sealing, which is very important for ensuring the integrity of the pipe system and preventing leakage.
[0038] The liner 4 nested in the curved structure 11 is made of PE extruded tube, in which glass fiber or other high-strength materials can be added. The liner 4 can provide additional mechanical support, so that the pipeline can withstand higher internal and external pressures, as well as more complex stress conditions, and has obvious advantages in torsion resistance. At the same time, since these reinforcement structures are wrapped between the protective layer 1 and the inner lining layer 3, they are well protected and avoid being directly exposed to the environment and corroded or otherwise damaged.
[0039] The reinforcing layer 2 will be bent on the inner side of the curved structure 11 so that it can effectively fit with the liner 4. Therefore, the width of the reinforcing layer 2 will be greater than the width of the protective layer 1 and the inner lining layer 3, and the concave structure 31 provided on the outer wall of the inner lining layer 3 can effectively fit with the bent reinforcing layer 2 here, thereby ensuring the integrity of the produced PE wrapped pipe.
[0040] The protective layer 1, the reinforcing layer 2, the inner lining layer 3 and the liner 4 are stacked according to the above scheme and spirally wound along the length direction to form a PE wound pipe, and then the spirally wound protective layer 1 and the inner lining layer 3 are welded into a whole by welding to ensure the sealing of the PE wound pipe.
[0041] In order to ensure that the interfaces 6 of the protective layer 1, reinforcement layer 2 and lining layer 3 of the produced PE wrapped pipe are all in one place and affect the self-strength of the PE wrapped pipe welding position, the sections of the protective layer 1, reinforcement layer 2 and lining layer 3 are set on different planes.
[0042] In order to avoid the misalignment of the welding positions of the inner lining layer 3 and the protective layer 1 and the docking position of the reinforcement layer 2 in the formed PE wrapped pipe so as to improve the structural strength at the interface 6, the cross-sections of the protective layer 1, the reinforcement layer 2 and the inner lining layer 3 are arranged on the same plane (that is, the cross-sections are not flush), and the interfaces 6 in the PE pipe formed by winding and welding are in a misaligned state to avoid stress acting on the interface 6 and causing breakage.
[0043] When producing PE winding pipes, in order to further improve the structural strength of the welding interface 6 on the protective layer 1 and avoid damage to the protective layer 1 that affects the service life of the internal layers and the overall quality of the PE pipe, the following technical solution is provided.
[0044] It also includes a reinforcing strip 5 spirally wound around the outside of the protective layer 1, and the reinforcing strip 5 is arranged at the interface 6 between two adjacent protective layers 1. The reinforcing strip 5 includes an arched section 51 and a straight section 52 connected to both ends of the arched section 51. The straight section 52 is in contact with the protective layers 1 on both sides of the interface 6, and the arched section 51 is separated from the protective layer 1.
[0045] The reinforcing strip 5 is also arranged around the PE winding pipe in a spiral winding manner. After the main structure of the PE winding pipe is produced, the reinforcing strip 5 can be further attached to its periphery as a reinforcement solution. Therefore, the reinforcing strip 5 is not a necessary component of the PE winding pipe and can be installed as an optional solution according to the use scenario of the PE winding pipe.
[0046] The provision of the reinforcing strip 5 can further improve the quality of the outermost protective layer 1. The provision of the straight section 52 can effectively weld with the protective layer 1 on both sides of the interface 6 to form a unified whole. The arched section 51 can improve the strength of the interface 6 of the protective layer 1. When subjected to external force, the force first acts on the arched section 51. The arched section 51 has good compression and tensile resistance, thereby improving the overall quality of the PE wrapped pipe.
[0047] On the basis of the above technical solution regarding the reinforcing strip 5, in order to ensure that the reinforcing strip 5 can be effectively welded with the protective layer 1 on both sides of the interface 6, to ensure the strength of the reinforcing strip 5 itself while preventing it from being disturbed by the external environment, the following technical solution is provided.
[0048] The reinforcing strip 5 includes an outer PE layer 53 , a steel belt layer 54 , and an inner PE layer 55 which are sequentially arranged from outside to inside. The inner PE layer 55 on the straight section 52 is welded to the outer wall of the protective layer 1 .
[0049] The main function of the inner PE layer 55 is to be welded with the protective layer 1 into a whole, while the outer PE layer 53 mainly plays a protective function to prevent the external environment from damaging the steel belt layer 54 in the middle of the dormitory. The steel belt layer 54 can improve the overall strength of the reinforcing strip 5 and is the main component for realizing its function.
[0050] In the above technical solution regarding the reinforcing strip 5 , in order to ensure that the reinforcing strip 5 can be accurately and stably welded on the protective layer 1 and can effectively protect both sides of the steel strip layer 54 , the following technical solution is provided.
[0051] Positioning strips 12 are provided on both sides of the protective layer 1 , the straight sections 52 on both sides of the reinforcing strip 5 are located inside the positioning strips 12 on both sides of the interface 6 , and the cross sections on both sides of the outer PE layer 53 and the inner PE layer 55 are welded to the positioning strips 12 .
[0052] The design of the positioning strip 12 can not only ensure that the reinforcing strip 5 is stably wrapped around the protective layer 1 on both sides of the interface 6, but also provide a certain support effect on both sides of the reinforcing strip 5, further strengthening the compression protection of the reinforcing strip 5 on the protective layer 1.
[0053] The sections on both sides of the outer PE layer 53 and the inner PE layer 55 can also be effectively welded with the positioning strip 12 made of PE material, which can effectively protect the sections on both sides of the steel belt layer 54.
[0054] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A PE winding pipe with a reinforced structure, characterized in that: It comprises a protective layer (1), a reinforcing layer (2), and an inner lining layer (3) which are arranged in sequence from the outside to the inside, wherein the protective layer (1) has a uniform thickness at all locations, and the reinforcing layer (2) has a uniform thickness at all locations; The protective layer (1) is provided with a curved surface structure (11) protruding outward, and a liner (4) is embedded in the curved surface structure (11), the reinforcing layer (2) is kept in contact with the outer wall of the liner (4), and the outer surface of the inner lining layer (3) is provided with a concave structure (31) which is in the curved surface structure (11) and keeps in contact with the inner lining layer (3), and the thickness of the concave structure (31) is greater than the thickness of the rest of the inner lining layer (3); The protective layer (1) and the inner lining layer (3) are of equal width, and the protective layer (1), the reinforcing layer (2), the inner lining layer (3), and the liner (4) are formed into the PE wound pipe by spiral winding and welding.
2. The PE winding pipe with a reinforced structure according to claim 1, characterized in that: The cross sections of the protective layer (1), the reinforcing layer (2) and the inner lining layer (3) are arranged on different planes.
3. The PE winding pipe with a reinforced structure according to claim 1, characterized in that: It also comprises a reinforcing strip (5) spirally wound around the outside of the protective layer (1), the reinforcing strip (5) being arranged at the interface (6) between two adjacent layers of protective layers (1), the reinforcing strip (5) comprising an arched section (51) and straight sections (52) connected to both ends of the arched section (51), the straight section (52) being in contact with the protective layer (1) on both sides of the interface (6), and the arched section (51) being separated from the protective layer (1).
4. The PE winding pipe with a reinforced structure according to claim 3, characterized in that: The reinforcing strip (5) comprises an outer PE layer (53), a steel belt layer (54), and an inner PE layer (55) which are sequentially arranged from the outside to the inside, and the inner PE layer (55) on the straight section (52) is welded to the outer wall of the protective layer (1).
5. The PE winding pipe with a reinforced structure according to claim 4, characterized in that: Positioning strips (12) are provided on both sides of the protective layer (1), the straight sections (52) on both sides of the reinforcing strip (5) are located inside the positioning strips (12) on both sides of the interface (6), and the cross sections on both sides of the outer PE layer (53) and the inner PE layer (55) are fused to the positioning strips (12).