Antioxidant PVC cable protection pipe

Abstract

The utility model is used to cable protection pipe technical field, disclose an anti -oxidation PVC cable protection pipe, including the protection pipe, the outside surface of protection pipe is provided with the oxidation -resistant layer, and the oxidation -resistant layer is polyurethane paint composition, the inside of protection pipe is provided with the connecting pipe, the middle section outer fixed surface of connecting pipe is provided with the center ring, the inside surface of protection pipe is fixedly provided with the screw block. This anti -oxidation PVC cable protection pipe, the oxidation -resistant layer of polyurethane paint composition that protection pipe outside sets up, can effectively isolate air, greatly slow down the oxidation speed of PVC material, avoid the aging, the cracking phenomenon of protection pipe, prolonged service life of cable protection pipe significantly, reduced maintenance cost and replacement frequency, cooperate the sealing ring structure of protection pipe one end outer fixed surface setting, effectively improved the sealing of junction, even in complex environment, also can prevent moisture, impurity etc. Penetrate, avoid cable damp, be damaged.

Description

Technical Field

[0001] This utility model relates to the field of cable protection pipe technology, specifically an antioxidant PVC cable protection pipe. Background Technology

[0002] In the booming development of modern power transmission and communication networks, cables, as the key medium carrying electrical energy and data signals, require innovative laying and protection technologies. PVC cable protection pipes stand out among numerous cable protection materials due to their unique advantages. Their corrosion resistance allows them to withstand the erosion of complex chemical environments such as industrial wastewater and soil humus; their excellent insulation performance effectively isolates external electromagnetic interference, ensuring the stability of power transmission and the purity of communication signals; and their relatively low manufacturing cost perfectly meets the economic needs of large-scale infrastructure projects. However, with the increasing demand for reliable equipment in the power and communication industries… With the increasing demands for performance and durability, existing PVC cable protection pipes have gradually revealed a series of problems that cannot be ignored in practical applications. From the perspective of material performance, ordinary PVC materials have relatively weak oxidation resistance. During long-term outdoor use, they are continuously exposed to ultraviolet radiation from sunlight, oxidation from oxygen in the air, and alternating extreme temperatures. As a result, the PVC molecular chains will gradually degrade and break. This material aging phenomenon is first manifested as the surface of the pipe darkening and gloss decreasing, followed by the appearance of fine cracks. As time goes by, the cracks continue to expand, eventually leading to a significant reduction in the mechanical strength of the pipe, which can no longer effectively protect the internal cables.

[0003] In terms of connection structure, traditional PVC cable protection pipes also have obvious defects. Common socket connections rely solely on the pipe's own tolerances and a small amount of glue for sealing. When faced with ground subsidence caused by geological activity, vibrations from strong winds and rainstorms, or thermal expansion and contraction due to temperature changes inside the pipe, the connection is prone to loosening. Once the seal fails, groundwater, rainwater, and corrosive liquids will seep into the pipe through the gaps, leaving the cable in a damp environment for a long time. This accelerates the aging and damage of the cable insulation layer and may even cause serious safety accidents such as short circuits. Furthermore, existing PVC cable protection... The conduit also has significant shortcomings in supporting and limiting the cable. Due to the lack of a reasonable internal support structure design, the cable cannot be effectively fixed and restrained inside the conduit. During the use of the cable after it has been laid, especially under the influence of factors such as changes in power load and fluctuations in ambient temperature, the cable will shake and shift inside the conduit. This shaking will not only increase the friction between the cable and the conduit wall, causing wear on the outer sheath of the cable and reducing the insulation performance of the cable, but may also cause uneven local stress on the cable, resulting in deformation of the internal conductor and poor contact, thereby affecting the power transmission efficiency and communication signal quality. Utility Model Content

[0004] The purpose of this utility model is to provide an antioxidant PVC cable protection pipe to solve the problems mentioned in the background art, such as the poor antioxidant performance of ordinary PVC materials, which leads to easy aging and cracking of the protection pipe and short service life; the unstable connection structure and poor sealing of traditional cable protection pipes, which are prone to loosening and leakage in complex environments, causing the cable to be damaged by moisture; and the insufficient support and limiting function of existing protection pipes for cables, which cannot prevent the cable from shaking inside the pipe and affecting the normal use of the cable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-oxidation PVC cable protection pipe, comprising a protective pipe, wherein an anti-oxidation layer is provided on the outer surface of the protective pipe, and the anti-oxidation layer is composed of polyurethane coating; a connecting pipe is provided inside the protective pipe; a central ring is fixedly provided on the outer surface of the middle section of the connecting pipe; and a threaded block is fixedly provided on the inner surface of the protective pipe.

[0006] A rotating functional ring is installed on the upper outer surface of the central ring, and sealing grooves are opened on the two outer surfaces of the functional ring and the central ring. Sealing rings are fixedly installed on the outer surfaces of the two protective tubes facing each other. A support frame is fixedly installed on the inner surface of the central ring, and a limit frame is fixedly installed on the inner surface of the functional ring.

[0007] A support column is fixedly installed inside one end of the protective tube, and a sliding column is installed at the upper end of the support column, and a tensioning frame is fixedly connected to the upper end of the sliding column.

[0008] Preferably, the protective tube is threadedly connected to the connecting tube via threaded blocks, and the threaded blocks are distributed at equal angles on the inner surface of the protective tube.

[0009] By adopting the above technical solution, the connection between the protective pipe and the connecting pipe is more stable and reliable. Compared with the traditional connection method, it is less likely to loosen under external force, vibration, etc., thus ensuring the stability of the entire cable protection pipe structure and effectively protecting the internal cable.

[0010] Preferably, the central ring and the functional ring are both installed by engaging with the sealing ring through a sealing groove, and the central ring, the functional ring, the protective tube and the connecting tube are concentrically arranged, with a gap between the outer surface of the connecting tube and the inner surface of the protective tube.

[0011] The above technical solution can significantly improve the sealing performance of the protective pipe connection, effectively blocking external moisture, dust and other impurities from entering the pipe, preventing the cable from being damaged by moisture and contamination. At the same time, the gap between the connecting pipe and the protective pipe provides convenience for installation, maintenance and other operations, and can also play a certain buffering role, reducing the risk of structural damage caused by external pressure.

[0012] Preferably, both the support frame and the limiting frame are arc-shaped and are concentrically arranged.

[0013] By adopting the above technical solution, the arc design can better fit the shape of the cable, providing uniform and stable support for the cable. Compared with other shapes, it can more effectively disperse the cable's own weight and external pressure. The concentric setting ensures that the support and limiting effect of the cable at different positions is consistent, preventing the cable from shifting or shaking inside the pipe, and ensuring the normal signal transmission and power delivery of the cable.

[0014] Preferably, a spring connects the sliding column and the support column, and the tensioning frame has an upward-facing C-shaped design.

[0015] By adopting the above technical solution, the tensioning frame can be flexibly adjusted according to the actual situation of the cable. When the cable is pulled, the spring can buffer the tension and prevent the cable from being stretched and broken due to excessive instantaneous force.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the antioxidant PVC cable protection pipe:

[0017] 1. The anti-oxidation layer made of polyurethane coating on the outside of the protective pipe can effectively isolate the air, greatly slow down the oxidation rate of PVC material, avoid aging and cracking of the protective pipe, significantly extend the service life of the cable protection pipe, and reduce maintenance costs and replacement frequency.

[0018] 2. The protective tube is threaded to the connecting tube via threaded blocks, and the threaded blocks are evenly distributed on the inner surface of the protective tube. This design makes the connection between the protective tube and the connecting tube more stable and less prone to loosening. At the same time, the central ring and the functional ring are installed by engaging with the sealing ring through the sealing groove. Combined with the sealing ring structure fixed on the outer surface of one end of the protective tube, the sealing performance of the connection is effectively improved. Even in complex environments, it can prevent moisture and impurities from seeping in, avoid the cable from getting damp and damaged, and ensure the safe and stable operation of the power system.

[0019] 3. The support frame fixedly installed on the inner surface of the central ring, the limiting frame fixedly installed on the inner surface of the functional ring, and the tensioning frame installed inside one end of the protective tube can provide good support and limiting for the cable, preventing the cable from swaying inside the tube. A sliding column is installed on the support column inside one end of the protective tube. A spring connects the sliding column and the support column. The tensioning frame fixedly connected to the upper end of the sliding column has an upward-facing C-shaped design. This structure allows the tensioning frame to flexibly adapt to different specifications of cables to support the cable. When the cable is pulled, it can compress the spring between the sliding column and the support column, preventing the cable from being stretched and broken. This further enhances the fixing and protection effect of the cable and ensures the normal use of the cable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the protective tube, connecting tube, and threaded block connection of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the connection between the central ring and the support frame of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the support column, sliding column, and tensioning frame of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram showing the connection and working state of the central ring, functional ring, and limiting frame of this utility model.

[0026] In the diagram: 1. Protective pipe; 2. Antioxidant layer; 3. Connecting pipe; 4. Central ring; 5. Threaded block; 6. Functional ring; 7. Sealing groove; 8. Sealing ring; 9. Support frame; 10. Limiting frame; 11. Support column; 12. Sliding column; 13. Tensioning frame. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-6 This utility model provides a technical solution: an antioxidant PVC cable protection pipe.

[0029] Example 1: This example discloses: a protective tube 1, an anti-oxidation layer 2 on the outer surface of the protective tube 1, the anti-oxidation layer 2 being made of polyurethane coating, a connecting tube 3 inside the protective tube 1, a central ring 4 fixedly installed on the outer surface of the middle section of the connecting tube 3, and a threaded block 5 fixedly installed on the inner surface of the protective tube 1.

[0030] The protective pipe 1 is threadedly connected to the connecting pipe 3 via threaded blocks 5, and the threaded blocks 5 are evenly distributed on the inner surface of the protective pipe 1.

[0031] During normal use, the protective tube 1 is threadedly connected to the connecting tube 3 via the threaded block 5 on its inner surface. At this time, the central ring 4 seals the connection between the protective tube 1 and the connecting tube 3, and the anti-oxidation layer 2 protects the outer surface of the protective tube 1, extending the service life of the tube.

[0032] Example 2: This example discloses the following based on Example 1: A rotating functional ring 6 is installed on the upper outer surface of the central ring 4, and sealing grooves 7 are opened on the two outer surfaces of the functional ring 6 and the central ring 4. Sealing rings 8 are fixedly installed on the outer surfaces of the two protective tubes 1 facing each other. A support frame 9 is fixedly installed on the inner surface of the central ring 4, and a limit frame 10 is fixedly installed on the inner surface of the functional ring 6.

[0033] A support column 11 is fixedly installed inside one end of the protective pipe 1, and a sliding sliding column 12 is installed on the upper end of the support column 11, and a tensioning frame 13 is fixedly connected to the upper end of the sliding column 12.

[0034] Both the central ring 4 and the functional ring 6 are installed by engaging with the sealing ring 8 through the sealing groove 7. The central ring 4, the functional ring 6, the protective tube 1 and the connecting tube 3 are concentrically arranged, and there is a gap between the outer surface of the connecting tube 3 and the inner surface of the protective tube 1.

[0035] Both the support frame 9 and the limiting frame 10 are arc-shaped and are concentrically arranged.

[0036] A spring connects the sliding column 12 and the support column 11, and the tensioning frame 13 has a C-shaped design with the opening facing upwards;

[0037] During installation, the protective tube 1 is inserted into the sealing groove 7 on the outer surface of the central ring 4 and the functional ring 6 through the sealing ring 8. At this time, the central ring 4 and the functional ring 6 are limited by the sealing ring 8 and the sealing ring 8 achieves sealing by cooperating with the sealing groove 7.

[0038] When the cable is inserted into the protective pipe 1 and the connecting pipe 3, one end of the cable rests on the upper end of the support frame 9 and the tensioning frame 13. When the functional ring 6 is in the initial position, the cable on the support frame 9 is pressed and limited by the limiting frame 10 on its inner surface. The tensioning frame 13 keeps the cable bent and taut under the support of the spring between the sliding column 12 and the support column 11. When the cable is pulled, the cable squeezes the tensioning frame 13, causing the lower end of the sliding column 12 to slide down inside the support column 11 and compress the spring of the support column 11 bracket, thereby reducing the possibility of the cable breaking when pulled.

[0039] When it is necessary to inspect the cable inside the protective tube 1, rotate the protective tube 1 to disengage it from the threaded connection with the connecting tube 3. Then rotate the functional ring 6 to connect the gap between the protective tube 1 and the connecting tube 3 with the outside air. The cable can be observed and inspected through the space created by the rotation of the functional ring 6.

[0040] 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. An antioxidant PVC cable protection pipe, comprising a protective pipe (1), wherein an antioxidant layer (2) is provided on the outer surface of the protective pipe (1), and the antioxidant layer (2) is composed of a polyurethane coating, characterized in that: The protective tube (1) is provided with a connecting tube (3) inside. A central ring (4) is fixedly provided on the outer surface of the middle section of the connecting tube (3). A threaded block (5) is fixedly provided on the inner surface of the protective tube (1).

2. The antioxidant PVC cable protection pipe according to claim 1, characterized in that: The protective tube (1) is threadedly connected to the connecting tube (3) via threaded blocks (5), and the threaded blocks (5) are distributed at equal angles on the inner surface of the protective tube (1).

3. The antioxidant PVC cable protection pipe according to claim 1, characterized in that: A rotating functional ring (6) is installed on the upper outer surface of the central ring (4), and sealing grooves (7) are opened on the two outer surfaces of the functional ring (6) and the central ring (4). A sealing ring (8) is fixedly installed on the outer surface of one end of the two protective tubes (1). A support frame (9) is fixedly installed on the inner surface of the central ring (4), and a limit frame (10) is fixedly installed on the inner surface of the functional ring (6).

4. The antioxidant PVC cable protection pipe according to claim 1, characterized in that: A support column (11) is fixedly installed inside one end of the protective tube (1), and a sliding column (12) is installed at the upper end of the support column (11), and a tensioning frame (13) is fixedly connected to the upper end of the sliding column (12).

5. The antioxidant PVC cable protection pipe according to claim 3, characterized in that: The central ring (4) and the functional ring (6) are both installed by engaging with the sealing ring (8) through the sealing groove (7), and the central ring (4), the functional ring (6), the protective tube (1) and the connecting tube (3) are arranged concentrically, and there is a gap between the outer surface of the connecting tube (3) and the inner surface of the protective tube (1).

6. The antioxidant PVC cable protection pipe according to claim 3, characterized in that: Both the support frame (9) and the limiting frame (10) are arc-shaped and are concentrically arranged.

7. The antioxidant PVC cable protection pipe according to claim 4, characterized in that: A spring connects the sliding column (12) and the support column (11), and the tensioning frame (13) has an upward-facing C-shaped design.

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