PE and PVC blended structured wall pipe

Abstract

This utility model relates to the field of power facility technology, and in particular to a PE and PVC blended structural wall pipe. The technical solution includes: a pipe body and an overhead ring. The pipe body is composed of a non-toxic bitter layer, a hardened layer, a composite layer, a core, and an antistatic coating. The non-toxic bitter layer, hardened layer, composite layer, core, and antistatic coating are arranged sequentially from the outside to the inside. The outer ring surface of the overhead ring is equidistantly fixed with ball seats, and rolling balls are rotatably mounted on the ball seats, rolling in contact with the inner wall of the pipe body. This utility model, through the synergistic design of a multi-layered composite protective pipe body and a ball-supported overhead ring, achieves an integrated cable protection structure that is rodent-proof, abrasion-proof, antistatic, and has high-strength compressive strength, significantly improving the safety and durability of cable laying.

Description

Technical Field

[0001] This utility model relates to the field of power facility technology, and in particular to a PE and PVC blended structural wall pipe. Background Technology

[0002] Currently, polyvinyl chloride (PVC) pipes are widely used as cable protection pipes in underground or semi-buried cable laying projects of power systems. These pipes have advantages such as light weight, convenient construction, and good insulation performance. However, they still have the following shortcomings in long-term operation: Traditional PVC pipes have limited outer layer hardness and no special odor on the surface, making them easy for rodents such as rats and squirrels to gnaw on, leading to pipe wall perforation, exposed cables, and even short circuit hazards. In underground or humid environments, the high humidity allows condensation and moisture to easily enter through pipe ports or gaps, accumulating inside the pipe over time and causing corrosion and aging of the cable sheath, reducing insulation performance.

[0003] Therefore, we propose a PE and PVC blended structural wall pipe to solve the existing problems. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a PE and PVC blended structural wall pipe.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PE and PVC blended structural wall pipe, comprising a pipe body and an overhead ring, wherein the pipe body is composed of a non-toxic bitter layer, a hardened layer, a composite layer, a pipe core and an antistatic coating, wherein the non-toxic bitter layer, the hardened layer, the composite layer, the pipe core and the antistatic coating are arranged sequentially from the outside to the inside; The outer ring surface of the overhead ring is fixedly provided with bead seats at equal intervals, and rolling balls are rotatably provided on the bead seats, and the rolling balls roll in contact with the inner wall of the tube body.

[0006] Preferably, the non-toxic bitter layer is formed by combining a co-extruded PVC matrix with a food-grade bittering agent, and the hardened layer is made of high-hardness co-extruded PVC material.

[0007] Preferably, the core is made of a blend of PE and PVC and is processed with biaxial orientation. The core has a longitudinal and circumferential oriented molecular chain structure. The antistatic coating is made of conductive modified PVC material to dissipate static electricity accumulation.

[0008] Preferably, the composite layer is formed by combining hard ceramic microparticles and co-extruded PVC matrix, with the hard ceramic microparticles uniformly distributed within the co-extruded PVC matrix.

[0009] Preferably, the outer wall of the tube is provided with longitudinal reinforcing ribs and annular reinforcing ribs at equal intervals, and the longitudinal reinforcing ribs and annular reinforcing ribs are arranged alternately.

[0010] Preferably, the overhead ring has connecting holes, which are distributed in a ring array on the overhead ring.

[0011] Preferably, the pipe body has a pipe head fixedly provided at the pipe end, and an annular groove is formed in the pipe head, and a sealing gasket is laid in the annular groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The tube body adopts a multi-layer combination structure of non-toxic bitter layer, hardening layer, composite layer, tube core and antistatic coating. The outer non-toxic bitter layer is formed by co-extruded PVC and food-grade bittering agent, which can effectively repel rodents. The hardening layer increases the hardness of the outer wall and prevents teeth from penetrating. The composite layer contains hard ceramic particles to improve wear resistance and cut resistance, forming a dual chemical and mechanical protection. An overhead ring is installed inside the pipe body, and the cable passes through the overhead ring, keeping the cable spaced from the inner wall of the pipe body. Ball bearings are installed on the outer ring surface of the overhead ring and roll in contact with the inner wall of the pipe body. When the cable expands or contracts due to heat or vibration, the ball bearings can reduce friction and prevent long-term wear between the overhead ring and the inner wall. At the same time, the annular air gap formed by the overhead ring can build a buffer air layer between the cable and the inner wall, reducing the risk of condensation corrosion of the cable. The overhead ring is provided with an annular array of connection holes, which can be used to tie and fix the cable to the overhead ring with ropes or straps. The core is made of PE and PVC blend and processed using a biaxial orientation process. Its molecular chains are arranged in both longitudinal and circumferential directions, which significantly improves the compressive strength, ring stiffness and impact resistance of the tube. The innermost antistatic coating is made of conductive modified PVC material, which can effectively dissipate static electricity accumulation, prevent dust adsorption and electrostatic discharge, improve the safety of cable operation and reduce environmental pollution. The outer wall of the tube is uniformly equipped with longitudinal and annular reinforcing ribs, which intersect to form a multi-directional stress-bearing skeleton. When subjected to external pressure, it can disperse stress concentration and prevent local deformation. At the same time, the outer wall ribs can also increase the surface friction coefficient, further interfering with the bite angle of rodents and enhancing the protective effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the layered structure of the tube body of this utility model; Figure 3 This is a schematic diagram of the contact between the tube body and the overhead ring of this utility model; Figure 4 This is a schematic diagram of the overhead ring structure of this utility model.

[0014] Figure label: 1. Tube body; 101. Non-toxic bitter layer; 102. Hardened layer; 103. Composite layer; 104. Tube core; 105. Antistatic coating; 2. Longitudinal reinforcing rib; 3. Annular reinforcing rib; 4. Tube head; 5. Annular groove; 6. Overhead ring; 7. Connecting hole; 8. Ball bearing; 9. Ball seat. Detailed Implementation

[0015] 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.

[0016] Example 1 like Figures 1-4 As shown, the present invention proposes a PE and PVC blended structural wall pipe, including a pipe body 1 and an overhead ring 6. The pipe body 1 is formed by a non-toxic bitter layer 101, a hardened layer 102, a composite layer 103, a core 104, and an antistatic coating 105 sequentially from the outside to the inside. The layers are integrally formed by a co-extrusion composite process. The high-temperature melting interface between adjacent layers forms a molecular chain cross-linking layer, thereby achieving a firm bond and avoiding delamination.

[0017] The non-toxic bitter layer 101 is composed of a co-extruded PVC matrix and a food-grade bittering agent. By forming a bitter surface on the outer layer, it can effectively repel rodents from gnawing. The hardening layer 102 is made of high-hardness co-extruded PVC material to improve the surface hardness of the outer wall of the tube body 1 and prevent rodents from penetrating and causing damage. The composite layer 103 incorporates hard ceramic particles, which are evenly distributed in the co-extruded PVC matrix to form a dual chemical and mechanical protective layer, giving the tube body 1 extremely high wear resistance and further preventing rodents from gnawing. The core 104 is made of PE and PVC blend and processed using a biaxial orientation process. The molecular chains are aligned longitudinally and circumferentially, which significantly improves the compressive strength, ring stiffness and impact resistance of the tube body 1. The antistatic coating 105 is formed of conductive modified PVC material and covers the inner wall surface of the tube body 1 to dissipate static electricity accumulation, prevent dust adsorption and electrostatic discharge, and improve the safety of cable operation and environmental cleanliness.

[0018] Example 2

[0019] like Figures 1-4As shown, the present invention proposes a PE and PVC blended structural wall pipe. Compared with Embodiment 1, this embodiment further includes: an overhead ring 6 disposed inside the pipe body 1, with the cable passing through the overhead ring 6; multiple ball seats 9 fixed at equal intervals on the outer ring surface of the overhead ring 6; and rolling balls 8 rotatably disposed on the ball seats 9. The rolling balls 8 make rolling contact with the inner wall of the pipe body 1. When the cable is displaced due to thermal expansion and contraction or vibration, the support of the rolling balls 8 can reduce the frictional resistance between the overhead ring 6 and the inner wall of the pipe body 1, avoiding long-term wear. At the same time, an annular air gap is formed between the overhead ring 6 and the inner wall of the pipe body 1, constructing a buffer air layer, which can reduce the risk of condensation corrosion on the cable surface. The overhead ring 6 is provided with an annular array of connecting holes 7, which can be used to fix the cable to the overhead ring 6 with ropes or straps, ensuring the stable suspension of the cable in the pipe.

[0020] Longitudinal reinforcing ribs 2 and annular reinforcing ribs 3 are arranged at equal intervals on the outer wall of the tube body 1. The two are staggered to form a multi-directional stress-bearing skeleton structure. When the tube body 1 is subjected to external pressure, the reinforcing ribs can disperse stress concentration and prevent local deformation. At the same time, the outer wall ribs increase the surface friction coefficient, interfere with the biting angle of rodents, and further enhance the protective effect.

[0021] Pipe head 4 is fixed at both ends of pipe body 1. Annular groove 5 is opened inside pipe head 4. Sealing gaskets are laid in annular groove 5 to form a reliable sealing interface when adjacent pipe sections are connected, preventing external moisture and dust from entering the pipe and ensuring the long-term stability and cleanliness of the cable operating environment.

[0022] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PE and PVC blended structural wall pipe, comprising a pipe body (1) and an overhead ring (6), characterized in that: The tube body (1) is composed of a non-toxic bitter layer (101), a hardened layer (102), a composite layer (103), a core (104), and an antistatic coating (105), which are arranged sequentially from the outside to the inside. The outer ring surface of the overhead ring (6) is fixedly provided with bead seats (9) at equal intervals, and the bead seats (9) are rotatably provided with balls (8), which roll in contact with the inner wall of the tube body (1).

2. The PE and PVC blended structural wall pipe according to claim 1, characterized in that: The non-toxic bitter layer (101) is formed by combining a co-extruded PVC matrix with a food-grade bittering agent, and the hardened layer (102) is made of high-hardness co-extruded PVC material.

3. The PE and PVC blended structural wall pipe according to claim 1, characterized in that: The core (104) is made of PE and PVC blend and is processed with biaxial orientation. The core (104) has a longitudinal and circumferential oriented molecular chain structure. The antistatic coating (105) is made of conductive modified PVC material to dissipate static electricity accumulation.

4. The PE and PVC blended structural wall pipe according to claim 1, characterized in that: The composite layer (103) is formed by combining hard ceramic microparticles and co-extruded PVC matrix, with the hard ceramic microparticles uniformly distributed in the co-extruded PVC matrix.

5. A PE and PVC blended structural wall pipe according to claim 1, characterized in that: The outer wall of the tube (1) is fixedly provided with longitudinal reinforcing ribs (2) and annular reinforcing ribs (3) at equal intervals, and the longitudinal reinforcing ribs (2) and annular reinforcing ribs (3) are arranged alternately.

6. The PE and PVC blended structural wall pipe according to claim 1, characterized in that: The overhead ring (6) is provided with connecting holes (7), which are arranged in a ring array on the overhead ring (6).

7. The PE and PVC blended structural wall pipe according to claim 1, characterized in that: The pipe body (1) has a pipe head (4) fixedly installed at the pipe end. An annular groove (5) is opened in the pipe head (4), and a sealing gasket is laid in the annular groove (5).

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