Rat-proof and termite-proof power cable

Abstract

The invention relates to a rat-proof and termite-proof power cable, and relates to the technical field of cables, the rat-proof and termite-proof power cable comprises a cable body, the outer wall of the cable body is provided with a plurality of mounting rings, the plurality of mounting rings are arranged at equal intervals along the length direction of the cable body, the mounting rings are provided with grooves, the grooves are arranged along the circumferential direction of the mounting rings, and the mounting rings are arranged in the grooves. The outer wall of the cable body is provided with a protection tube, the protection tube and the cable body are coaxially arranged, the protection tube is arranged between the two adjacent mounting rings, the cable body is wrapped by the protection tube, the end part of the protection tube is bent towards the interior of the groove, the protection tube is slidably connected in the groove, and the protection tube is arranged in the groove. And the mounting ring is provided with a fixing piece used for fixing the mounting ring on the cable body and a limiting piece used for limiting the end part of the protection tube in the groove. The cable protection device has the effect of flexibly protecting the cable.

Description

Technical Field

[0001] This application relates to the technical field of cables, and in particular to a rodent-proof and ant-proof power cable. Background Technology

[0002] In power transmission systems, power cables, as the core carrier of energy transmission, are widely used in various scenarios such as urban pipelines, industrial and mining enterprises, and forest and mountainous areas. Their operational stability is directly related to the safety and continuity of power supply. However, during the laying and use of cables, they are highly susceptible to damage from rodents, termites, and other organisms. The bites of rodents and termites can penetrate the outer sheath of the cable, causing damage to the internal insulation structure, leading to faults such as moisture intrusion, insulation aging, leakage, and short circuits. In severe cases, this can cause large-scale power outages, equipment damage, and even fires and explosions, resulting in huge economic losses and safety hazards to production and daily life. Therefore, rodent and termite prevention has become an indispensable and crucial aspect of power cable design and manufacturing.

[0003] Currently, rodent and ant prevention technologies for power cables are mainly divided into two categories: chemical methods and physical methods. Among them, chemical methods involve adding repellents (such as capsaicin) or toxic additives to the cable sheath material to repel or kill rodents and ants through chemical action. However, this type of method has significant drawbacks: toxic additives can pollute the environment and threaten the health of producers and construction workers; and the effectiveness of repellents gradually diminishes over time, especially in humid environments where the effectiveness dissipates even faster. After long-term use, it is difficult to maintain an effective protective effect and cannot fundamentally prevent cables from being chewed and damaged.

[0004] Physical methods, with their advantages of being environmentally friendly and providing long-lasting protection, have become the mainstream technology for rodent- and termite-proof cables. Their core principle is to enhance the mechanical strength of the sheath or optimize its surface structure, preventing rodents and termites from chewing through it. Among existing physical protection technologies, the most widely used is the installation of rigid protective devices on the outside of the cable, with reinforced cage structures being the most common—using the rigid structure of a metal cage to prevent rodents and termites from contacting the cable body, achieving physical isolation protection. However, this type of reinforced cage protection device has significant problems: to ensure protective strength, the cage is usually made of heavy metal materials, resulting in a large overall size and weight, which not only significantly increases the cable's transportation costs and storage difficulties but also causes great inconvenience to on-site installation. Therefore, developing a rodent- and termite-proof power cable that offers reliable protection, a lightweight structure, good flexibility, and ease of construction has become an urgent technical problem to be solved in the current power cable industry. Summary of the Invention

[0005] To facilitate rodent and termite protection of cables, this application provides a rodent and termite-proof power cable.

[0006] The rodent-proof and ant-proof power cable provided in this application adopts the following technical solution: A rodent- and ant-proof power cable includes a cable body. Multiple mounting rings are provided on the outer wall of the cable body. Each mounting ring consists of two opposing mounting half-rings. The multiple mounting rings are equidistantly arranged along the length of the cable body. Grooves are formed on each mounting ring, arranged circumferentially. A protective tube is provided on the outer wall of the cable body. The protective tube consists of two opposing protective half-tubes, coaxially arranged with the cable body. The protective tube is positioned between two adjacent mounting rings, enclosing the cable body. The end of the protective tube is bent inwards into the groove and slidably connected within the groove. Each mounting ring has a fixing member for securing the mounting ring to the cable body and a limiting member for restricting the end of the protective tube within the groove.

[0007] By adopting the above technical solution, after the cable is laid, a half-ring can be installed at the location of the cable that needs protection, and a half-pipe can be inserted into the half-ring. Then, the corresponding half-ring can be installed. This allows the protective half-pipe to block the entire cable segment being shielded. At the same time, the protective pipe can be rotatably connected to the installation ring, which can directly prevent rodents and ants from gnawing on the cable. When rodents gnaw on the protective pipe, because the protective pipe is rotatably connected to the limiting ring, it is difficult to remain stationary when subjected to unbalanced external forces, and it will rotate to a certain extent. As a result, it is difficult for the rodents' teeth to find a suitable point of force, making it difficult for them to directly damage the protective pipe, thereby improving its protective effect.

[0008] Optionally, limiting grooves are provided on both sides of the groove, and one end of the protective tube placed in the groove is bent into the limiting groove, and the limiting groove restricts the end of the protective tube within the limiting groove.

[0009] By adopting the above technical solution, the end of the protective tube can be limited by the limiting groove, thereby improving its rotational stability.

[0010] Optionally, the fixing element is configured as a fixing bolt, and the fixing bolts are configured as a plurality of bolts and are equally spaced along the circumference of the groove, and the fixing bolts are threaded onto the cable body.

[0011] By adopting the above technical solution, the mounting ring can be directly fixed to the cable body by rotating the fixing bolt.

[0012] Optionally, the limiting member is configured as a limiting post, and the limiting post corresponds one-to-one with the fixing bolt. The fixing bolt passes through the limiting post and is threadedly connected to the limiting post.

[0013] By adopting the above technical solution, the position between two adjacent protective tubes can be restricted by the limiting post, and the gap between the two adjacent protective tubes can be limited.

[0014] Optionally, the cable body includes multiple cross-linked polyethylene insulation layers, each containing a copper conductor. The multiple cross-linked polyethylene insulation layers are covered with the same galvanized steel strip layer, and the galvanized steel strip layer is covered with a polyvinyl chloride protective layer.

[0015] By adopting the above technical solutions, the cable body is wrapped with multiple cross-linked polyethylene insulation layers to provide good insulation; the galvanized steel strip layer provides certain mechanical protection and shielding; the polyvinyl chloride protective layer further protects the internal structure of the cable, prevents damage from rodents and ants, and also has corrosion resistance and other properties, thereby improving the overall protective performance and service life of the cable.

[0016] Optionally, a plurality of connecting posts are provided between the polyvinyl chloride protective layer and the galvanized steel strip layer for connecting the two.

[0017] By adopting the above technical solution, a certain gap can be created between the polyvinyl chloride protective layer and the galvanized steel strip layer, thereby reducing the overall heat transfer efficiency of the cable.

[0018] Optionally, the shank of the fixing bolt passes through the polyvinyl chloride protective layer and is threaded into the connecting post.

[0019] By adopting the above technical solution, the fixing bolt rod passes through the polyvinyl chloride protective layer and is threaded into the connecting post, which can make the mounting ring more firmly fixed to the cable body and enhance the stability of the overall structure.

[0020] Optionally, the connecting post is made of high-temperature vulcanized silicone rubber.

[0021] By adopting the above technical solution, high-temperature vulcanized silicone rubber has good high-temperature resistance, aging resistance, and insulation properties, which can enhance the connection stability between the PVC protective layer and the galvanized steel strip layer.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By installing a protective tube on the outer wall of the cable body, rodents and ants can be prevented from gnawing on the cable, which solves the problems of the existing rodent and ant prevention methods being unsustainable, costly, and unstable in protection. 2. The mounting ring consists of two mounting half-rings, and the protective tube consists of two protective half-tubes, which facilitates installation and disassembly, reducing installation costs and difficulty; 3. By using fasteners and limiting components to fix the mounting ring to the cable body and restrict the end of the protective tube, the stability of the protective tube installation is ensured and the reliability of rodent and ant prevention is improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic cross-sectional view of the cable according to an embodiment of this application; Figure 3 This is a schematic diagram of the installation half-ring structure according to an embodiment of this application.

[0024] In the diagram, 1. Cable body; 11. Cross-linked polyethylene insulation layer; 12. Copper conductor; 13. Galvanized steel strip layer; 14. Polyvinyl chloride protective layer; 15. Connecting post; 2. Mounting ring; 21. Groove; 211. Limiting groove; 22. Mounting half ring; 3. Protective tube; 31. Protective half tube; 4. Fixing component; 5. Limiting component. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0026] An embodiment of this application is: a rodent-proof and ant-proof power cable, referring to... Figure 1 The cable body 1 includes a cable body 1. Multiple mounting rings 2 are provided on the outer wall of the cable body 1. Each mounting ring 2 consists of two oppositely arranged mounting half-rings 22. The multiple mounting rings 2 are arranged at equal intervals along the length of the cable body 1.

[0027] Reference Figure 2 and Figure 3 The mounting ring 2 has a groove 21, which is arranged circumferentially around the mounting ring 2. A protective tube 3 is provided on the outer wall of the main body. The protective tube 3 consists of two opposing protective half-tubes 31, which are coaxially arranged with the cable body 1. The protective tube 3 is placed between two adjacent mounting rings 2, enclosing the cable body 1. The ends of the protective tubes 3 are bent into the groove 21, and are slidably connected within the groove 21. Limiting grooves 211 are provided on both sides of the groove 21. One end of the protective tube 3 placed in the groove 21 is bent into the limiting groove 211, and the limiting groove 211 restricts the end of the protective tube 3 within the limiting groove 211. Simultaneously, to facilitate the insertion of the protective half-tube 31 onto the mounting half-ring 22, the mounting plate ring... The mounting ring 2 is provided with a fixing member 4 for fixing the mounting ring 2 to the cable body 1 and a limiting member 5 for limiting the end of the protective tube 3 in the groove 21.

[0028] The fixing component 4 is a fixing bolt, and multiple fixing bolts are set at equal intervals along the circumference of the groove 21. The fixing bolts are threadedly connected to the cable body 1. The limiting component 5 is a limiting post, and the limiting post corresponds one-to-one with the fixing bolt. The fixing bolt passes through the limiting post and is threadedly connected to the limiting post.

[0029] The cable body 1 includes multiple cross-linked polyethylene (XLPE) insulation layers 11, each containing a copper conductor 12. A single galvanized steel strip layer 13 is fitted over each XLPE insulation layer 11, and a polyvinyl chloride (PVC) protective layer 14 is fitted over the galvanized steel strip layer 13. Multiple connecting posts 15 are provided between the PVC protective layer 14 and the galvanized steel strip layer 13 to connect them. The connecting posts 15 are made of high-temperature vulcanized silicone rubber. The multiple connecting posts 15 are equidistantly spaced around the axis of the cable body 1, and each connecting post 15 corresponds to a fixing bolt. The shank of the fixing bolt passes through the PVC protective layer 14 and is threaded into the connecting post 15.

[0030] Therefore, after the cable is laid, a half-ring 22 can be installed at the location of the cable that needs protection, and a half-pipe can be inserted into the half-ring 22. Then, the corresponding half-ring 22 can be installed, so that the protective half-pipe 31 blocks the entire cable segment that is blocked. At the same time, the protective pipe 3 can be rotatably connected to the installation ring 2. Then, the position of the limiting post is fixed by the fixing part 4 and the positioning part. The limiting post can restrict the position between two adjacent protective pipes 3 and limit the gap between two adjacent protective pipes 3.

[0031] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rodent- and termite-resistant power cable, characterized in that The utility model provides a cable body (1), the outer wall of cable body (1) is equipped with a plurality of mounting ring (2), mounting ring (2) is composed of two opposite mounting half ring (22), a plurality of mounting ring (2) is equidistantly arranged along the length direction of cable body (1), recess (21) is set up on mounting ring (2), recess (21) is set along the circumference direction of mounting ring (2), the outer wall of cable body (1) is equipped with protection pipe (3), protection pipe (3) is set up by two opposite protection half pipe (31), protection pipe (3) is coaxially arranged with cable body (1), protection pipe (3) is placed between two adjacent mounting ring (2), protection pipe (3) is wrapped in cable body (1), the end of protection pipe (3) is bent to the inside of recess (21), protection pipe (3) is connected in recess (21) slidingly, mounting ring (2) is equipped with the fixing piece (4) for fixing mounting ring (2) on cable body (1) and the limiting piece (5) for limiting the end of protection pipe (3) in recess (21).

2. A rodent- and termite-resistant power cable according to claim 1, characterized in that The both sides in recess (21) are equipped with limiting groove (211), one end of protection pipe (3) placed in recess (21) is bent to limiting groove (211), and limiting groove (211) limits the end of protection pipe (3) in limiting groove (211).

3. A rodent- and termite-resistant power cable according to claim 1, characterized in that The fixing piece (4) is set up as fixed bolt, the fixed bolt is set up as a plurality of and is equidistantly arranged along the circumference direction of recess (21), and the fixed bolt is threadedly connected on cable body (1).

4. A rodent- and termite-resistant power cable according to claim 3, characterized in that The limiting piece (5) is set up as limiting column, the limiting column corresponds to the fixed bolt one by one, and the fixed bolt passes through the limiting column and is threadedly connected with the limiting column.

5. A rodent- and termite-resistant power cable according to claim 4, characterized in that The cable body (1) includes a plurality of cross-linked polyethylene insulation layers (11), the cross-linked polyethylene insulation layer (11) is wrapped with a copper conductor (12), a plurality of cross-linked polyethylene insulation layers (11) are provided with a same galvanized steel belt layer (13), and the galvanized steel belt layer (13) is provided with a polyvinyl chloride protective layer (14).

6. A rodent- and termite-resistant power cable according to claim 5, characterized in that A plurality of connecting columns (15) are arranged between the polyvinyl chloride protective layer (14) and the galvanized steel belt layer (13) for connecting the two.

7. A rodent- and termite-resistant power cable according to claim 6, characterized in that The rod of the fixed bolt passes through the polyvinyl chloride protective layer (14) and is threadedly connected in the connecting column (15).

8. A rodent- and termite-resistant power cable according to claim 7, characterized in that The connecting column (15) is made of high-temperature vulcanized silicone rubber.

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