Rat and termite resistant low voltage cable

Abstract

The present application relates to the technical field of crosslinked polyethylene insulation rat and termite prevention cable, in particular to a rat and termite prevention low-voltage cable, which comprises a crosslinked polyethylene cable body, one end of the crosslinked polyethylene cable body is fixedly connected with a male joint, the outer side of the male joint is fixedly sleeved with an outer limiting ring, a plurality of screw holes are formed in the inner side of the outer limiting ring, the outer side of the end of the male joint away from the crosslinked polyethylene cable body is fixedly installed with a socket seat, the outer side of the male joint is fixedly sleeved with a plurality of sealing strips, and a plurality of pin grooves are formed in the outer side of the male joint; through the glass fiber resin integrated layer, the glass fiber is inorganic non-metallic material, which is completely immune to electrochemical corrosion and ant acid chemical corrosion, the weight is lighter than that of the same grade steel belt armor, the bending radius is smaller, the problems of hard, heavy and difficult laying of the metal armored cable are solved, electromagnetic interference and eddy current loss can be eliminated, and the metal mouse attracting effect can be avoided.

Description

Technical Field

[0001] This invention relates to the field of cross-linked polyethylene insulated rodent-proof and termite-proof cables, specifically a rodent-proof and termite-proof low-voltage cable. Background Technology

[0002] Rodent-proof and termite-proof low-voltage cables are special low-voltage power cables designed specifically for environments susceptible to rodents, termites, and other pests. Through one or more composite protective measures, such as adding chemical repellents to the sheath, using high-hardness physical protective materials (e.g., nylon, fiberglass), or metal armor, they effectively prevent pests from gnawing and damaging the insulation layer, thus ensuring the long-term safe and stable operation of the line in complex ecological environments. Cross-linked polyethylene insulated cables are suitable for power distribution networks and other fields, possessing advantages unmatched by PVC insulated cables. They are simple in structure, lightweight, heat-resistant, have high load capacity, do not melt, are resistant to chemical corrosion, and have high mechanical strength.

[0003] In the use of cross-linked polyethylene insulated cables, some application scenarios overlap with the living environments of rodents and termites due to humidity and environmental factors. This can lead to cable leakage and damage caused by rodent and termite gnawing. Existing rodent- and termite-proof cables mostly use steel tape armor for protection. Although they have good protective effects, they are heavy, lack flexibility, and are inconvenient to install and use. They are also prone to coating damage and corrosion after rodents or termites attempt to gnaw on them. Furthermore, when the cable requires a joint, the existing joints also have seams and structures that slowly fail, resulting in a decrease in protective effect. Based on this, a rodent- and termite-proof low-voltage cable is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a rodent-proof and ant-proof low-voltage cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rodent-proof and ant-proof low-voltage cable, comprising a cross-linked polyethylene cable body, a male connector fixedly connected to one end of the cross-linked polyethylene cable body, an outer limiting ring fixedly sleeved on the outer side of the male connector, a plurality of screw holes formed inside the outer limiting ring, a socket seat fixedly installed on the outer side of the male connector away from the cross-linked polyethylene cable body, a plurality of sealing strips fixedly sleeved on the outer side of the male connector, a plurality of pin grooves formed on the outer side of the male connector, a positioning pin slidably installed inside the pin groove, and a reset pin fixedly installed at the bottom of the positioning pin. The spring has a pressure relief hole on the outer side of one end of the male connector. Several hollow plates are fixedly installed inside the pressure relief hole. A side hollow rubber ring is attached to one side of the hollow plate. A positioning spring is fixedly installed on one side of the side hollow rubber ring. A side hollow groove is fixedly installed on the other end of the positioning spring. The other end of the cross-linked polyethylene cable body is fixedly connected to a female connector. A special sealing ring is fixedly installed on the outer end of the female connector. Several positioning screw holes are opened inside the special sealing ring and the female connector. Several pin holes are opened inside the female connector. A plug socket is fixedly installed inside the female connector.

[0006] The cross-linked polyethylene cable body includes a multi-core inner core, a mica tape layer wound around the outside of the multi-core inner core, a cross-linked polyethylene insulation layer fixedly installed on the outside of the mica tape layer, a heat insulation layer covering the outside of the cross-linked polyethylene insulation layer, a honeycomb air chamber layer fixedly sleeved on the outside of the heat insulation layer, a glass fiber resin integrated layer covering the outside of the honeycomb air chamber layer, a nylon outer sheath layer fixedly sleeved on the outside of the glass fiber resin integrated layer, a plurality of self-healing microcapsules impregnated on the inside of the glass fiber resin integrated layer, and a plurality of encapsulated slow-release microcapsules impregnated on the inside of the nylon outer sheath layer.

[0007] Preferably, the self-healing microcapsules are uniformly distributed in a circumferential linear pattern on the inner side of the glass fiber resin integrated layer. The glass fiber resin integrated layer is pre-impregnated with modified epoxy resin to fill the gaps between the yarns and form a quasi-dense barrier. The self-healing microcapsules are impregnated inside the glass fiber resin integrated layer.

[0008] Preferably, the encapsulated sustained-release microcapsules are evenly distributed in a circumferential linear pattern inside the nylon outer sheath layer. The encapsulated sustained-release microcapsules are composed of a nano-scale polymer capsule shell and an environmentally friendly repellent filler. The nylon outer sheath layer is made of glass fiber impregnated with a bio-based and biomimetic repellent and tightly woven together, and the encapsulated sustained-release microcapsules are located inside the nylon outer sheath layer.

[0009] Preferably, both the socket and the plug are connected to the inner core of the multi-core wire, the size of the plug is compatible with the size of the socket, and the size of the male connector is compatible with the size of the female connector.

[0010] Preferably, the bottom end of the return spring is fixedly installed inside the pin groove, the sealing strip is linearly and evenly distributed on the outside of the male connector, the positioning pin and the pin groove are circumferentially and evenly distributed on the outside of the male connector, the positioning pin and the sealing strip are linearly and alternately distributed, the pin hole is circumferentially and evenly distributed inside the female connector, and the specifications and dimensions of the pin hole are adapted to the specifications and dimensions of the positioning pin.

[0011] Preferably, the pressure relief holes are evenly distributed circumferentially inside the outer side of the male connector, the pressure relief holes are L-shaped, the top of the pressure relief holes are connected to the inside of the screw holes, and a flexible sealing post is movably installed at the top of the pressure relief holes.

[0012] Preferably, the side hollow groove is fixedly installed inside the pressure relief hole, the middle hollow plate has a hollow hole in the middle, and the outer sides of the side hollow rubber ring and the side hollow groove are both hollow holes. The middle hollow plate, the side hollow rubber ring, the side hollow groove and the positioning spring are all linearly and evenly distributed inside the pressure relief hole.

[0013] Preferably, the positioning screw holes are evenly distributed circumferentially inside the female connector and the specially made sealing ring, and the specifications and dimensions of the positioning screw holes are adapted to the specifications and dimensions of the screw holes, and the specifications and dimensions of the outer limiting ring are adapted to the specifications and dimensions of the specially made sealing ring.

[0014] Preferably, the outer sides of the male connector, the outer limiting ring, the female connector, and the special sealing ring are all coated with an anti-repellent coating.

[0015] Preferably, a plurality of integrated optical fiber sensing wires are sandwiched between the nylon outer sheath layer and the glass fiber resin integrated layer, and the integrated optical fiber sensing wires are evenly distributed in a circular pattern on the opposite sides of the glass fiber resin integrated layer and the nylon outer sheath layer.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the cable is used, it is inserted by connecting the male and female connectors. The positioning pin is compressed and returns, compressing the return spring. The sealing strip is deformed by pressure to fill and seal the gap between the male and female connectors. An airtight space is formed on the opposite side of the male and female connectors, and the air pressure gradually increases. The air pressure is discharged through the pressure relief hole, and pushes the edge hollow rubber ring and positioning spring to achieve a one-way opening. The gas is discharged through the pressure relief hole and the guide screw hole. Then the socket and plug are connected, and the positioning pin reaches the pin hole position, restoring the return spring. The positioning spring lifts and resets the positioning pin, locking it inside the pin hole. Then, the air pressure and the elasticity of the positioning spring cause the edge hollowed-out rubber ring to adhere to the middle hollowed-out plate, achieving one-way sealing. Next, the flexible sealing column is filled into the top of the pressure relief hole inside the screw hole, and glue is filled to seal it. The screw hole and the positioning screw hole are aligned and the special sealing ring is squeezed. The screw is inserted through the screw hole and the positioning screw hole, so that the female and male connectors are locked. The air pressure effect locks it stably, reducing damage from rodents and ants at the joint and ensuring the integrity of the protection. 2. Through the setting of nylon outer sheath layer and glass fiber resin integrated layer, glass fiber is an inorganic non-metallic material that is completely immune to electrochemical corrosion and formic acid chemical erosion. It is lighter than steel tape armor of the same level and has a smaller bending radius. It also solves the problems of metal armored cables being hard, heavy and difficult to lay. It can eliminate electromagnetic interference and eddy current loss and avoid metal rodent attraction effect. Combined with the extremely high strength, hardness and toughness of nylon in glass fiber resin integrated layer, it is wear-resistant, tear-resistant and impact-resistant. It has excellent flexibility and a smaller bending radius. At the same time, it is also environmentally friendly and non-toxic. 3. The honeycomb structure of the honeycomb air chamber layer allows for elastic gaps. When the cable is being cabled, the internal cavity contains air, which reduces the overall weight of the cable and provides cushioning and protection, increasing its impact resistance and protection for the multi-core wire cores. Attached Figure Description

[0017] Figure 1 This is a front-view stereoscopic structural diagram of the present invention.

[0018] Figure 2 This is a rear-view stereoscopic view of the structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the three-dimensional appearance structure of the present invention from a right-side cross-section.

[0020] Figure 4 This is a schematic diagram of the front cross-sectional structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of the present invention.

[0022] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point B.

[0024] Figure 8 For the present invention Figure 4 Enlarged structural diagram at point D.

[0025] Figure 9 For the present invention Figure 5 Enlarged structural diagram at point D.

[0026] In the diagram: 1. Cross-linked polyethylene cable body; 101. Multi-core inner core; 102. Mica tape layer; 103. Cross-linked polyethylene insulation layer; 104. Honeycomb air chamber layer; 105. Glass fiber resin integrated layer; 106. Nylon outer sheath layer; 107. Heat insulation layer; 2. Male connector; 3. Outer limiting ring; 4. Sealing strip; 5. Socket; 6. Positioning pin; 7. Female connector; 8. Special sealing ring; 9. Positioning screw hole; 10. Pin hole; 11. Plug socket; 12. Pressure relief hole; 13. Screw hole; 14. Return spring; 15. Pin groove; 16. Central hollow plate; 17. Edge hollow rubber ring; 18. Edge hollow groove; 19. Positioning spring; 20. Flexible sealing post; 21. Self-healing microcapsule; 22. Encapsulated slow-release microcapsule; 23. Integrated fiber optic sensing conductor. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-9This invention provides a technical solution: a rodent-proof and ant-proof low-voltage cable, comprising a cross-linked polyethylene cable body 1, a male connector 2 fixedly connected to one end of the cross-linked polyethylene cable body 1, an outer limiting ring 3 fixedly sleeved on the outside of the male connector 2, a plurality of screw holes 13 opened inside the outer limiting ring 3, a socket seat 5 fixedly installed on the outside of the male connector 2 away from the cross-linked polyethylene cable body 1, a plurality of sealing strips 4 fixedly sleeved on the outside of the male connector 2, a plurality of pin grooves 15 opened on the outside of the male connector 2, a positioning pin 6 slidably installed inside the pin groove 15, a return spring 14 fixedly installed at the bottom of the positioning pin 6, and the male connector 2... A pressure relief hole 12 is provided on the outer side of one end. Several hollow plates 16 are fixedly installed inside the pressure relief hole 12. A side hollow rubber ring 17 is attached to one side of the hollow plate 16. A positioning spring 19 is fixedly installed on one side of the side hollow rubber ring 17. A side hollow groove 18 is fixedly installed on the other end of the positioning spring 19. A female connector 7 is fixedly connected to the other end of the cross-linked polyethylene cable body 1. A special sealing ring 8 is fixedly installed on the outer end of the female connector 7. Several positioning screw holes 9 are provided inside the special sealing ring 8 and the female connector 7. Several pin holes 10 are provided inside the female connector 7. A plug socket 11 is fixedly installed inside the female connector 7.

[0029] The cross-linked polyethylene cable body 1 includes a multi-core inner core 101, a mica tape layer 102 wrapped around the outside of the multi-core inner core 101, a cross-linked polyethylene insulation layer 103 fixedly installed on the outside of the mica tape layer 102, a heat insulation layer 107 covering the outside of the cross-linked polyethylene insulation layer 103, a honeycomb air chamber layer 104 fixedly sleeved on the outside of the heat insulation layer 107, a glass fiber resin integrated layer 105 covering the outside of the honeycomb air chamber layer 104, a nylon outer sheath layer 106 fixedly sleeved on the outside of the glass fiber resin integrated layer 105, a plurality of self-healing microcapsules 21 impregnated on the inside of the glass fiber resin integrated layer 105, and a plurality of coated slow-release microcapsules 22 impregnated on the inside of the nylon outer sheath layer 106.

[0030] The working principle of the above technical solution is as follows: During use, the cross-linked polyethylene cable body 1 is laid out in the area of ​​use and inserted through the male connector 2 and female connector 7. At this time, the positioning pin 6 is compressed back, compressing the return spring 14. The sealing strip 4 deforms under pressure, filling and sealing the gap between the male connector 2 and female connector 7, forming an airtight space on opposite sides of the male connector 2 and female connector 7. The air pressure gradually increases, and at this time, the air pressure is discharged through the pressure relief hole 12, pushing the edge-hollowed rubber ring 17 and the positioning spring 19 to achieve a one-way opening. The gas is discharged through the guide screw hole 13 of the pressure relief hole 12. Then, the socket 5 and the plug 11 are connected, and the positioning pin 6 reaches the pin hole 10 position. The return spring 14 pushes the positioning pin 6 back to its original position and locks it inside the pin hole 10. Then, the air pressure and the elasticity of the positioning spring 19 cause the edge hollowed-out rubber ring 17 to adhere to the middle hollowed-out plate 16, achieving one-way sealing. Next, the flexible sealing column 20 is filled into the top of the pressure relief hole 12 inside the screw hole 13, and glue is filled to seal it. At this time, the screw hole 13 and the positioning screw hole 9 are aligned and the special sealing ring 8 is squeezed. The screw is inserted and passes through the screw hole 13 and the positioning screw hole 9, so that the female connector 7 and the male connector 2 are locked. The air pressure effect is used to lock and stabilize the connection. The outer side of the male connector 2 and the female connector 7 is made of metal corrosion-resistant material, thereby achieving a sealed lock and preventing rodent and ant intrusion, reducing rodent and ant damage at the joint, and ensuring the integrity of the protection. The nylon outer sheath layer 106 and the glass fiber resin integrated layer 105 are also used to achieve this. Fiberglass is an inorganic non-metallic material, completely immune to electrochemical corrosion and formic acid erosion. In corrosive environments such as coastal areas, chemical plants, and termite-infested areas, its long-term reliability is significantly superior to metal armored cables. It weighs only half that of steel-tape armored cables of the same protection level, has a smaller bending radius, and solves the pain points of metal armored cables—their rigidity, weight, and difficulty in installation. It is suitable for scenarios such as narrow spaces in pipe corridors, vertical shafts, power supply for mobile equipment, and the renovation of old pipe networks. It can also eliminate electromagnetic interference and eddy current losses and avoid the metal-attracting rodent effect. In the event of accidental damage, when combined with a repair agent released from the encapsulated slow-release microcapsules (22 microcapsules ruptured), it automatically fills cracks and prevents further corrosion. Combined with the extremely high strength, hardness, and toughness of the nylon 105 integrated fiberglass resin layer, it achieves this. Wear-resistant, tear-resistant, and impact-resistant, it boasts excellent flexibility and a smaller bending radius compared to traditional hard metal armor. The nylon sheath requires no additional chemical repellents; its high hardness and wear-resistant physical properties effectively prevent damage from rodents and ants. It is also environmentally friendly and non-toxic, making it ideal for complex environments such as railways and mines. The built-in encapsulated slow-release microcapsules 22 further prevent rodent and ant damage. The honeycomb structure of the honeycomb air chamber layer 104 allows for elastic gaps, ensuring air circulation within the internal cavities during cable formation. This reduces the overall weight of the cable and provides cushioning protection, increasing impact resistance and minimizing damage to the multi-core inner core 101 from accidentally falling stones, thus enhancing protection.

[0031] In another implementation scheme, such as Figures 1-9 As shown, the self-healing microcapsules 21 are uniformly distributed in a circumferential linear pattern on the inner side of the glass fiber resin integrated layer 105. The glass fiber resin integrated layer 105 is pre-impregnated with modified epoxy resin to fill the gaps between the yarns and form a quasi-dense barrier. The self-healing microcapsules 21 are impregnated inside the glass fiber resin integrated layer 105.

[0032] If damage occurs, such as minor scratches or bites causing micro-cracks in the sheath, the self-healing microcapsules 21 automatically release repair agent to fill the wound, or the material self-heals after being heated / pressurized, preventing the damaged point from becoming a breakthrough for rodents and ants to invade. At the same time, it restores local protective capabilities. The microcapsules rupture to release the repair agent, automatically filling the cracks, preventing further erosion, and increasing the protective effect. The glass fiber resin integrated layer 105 adopts a high-density impregnation and weaving process, using modified epoxy resin or polyurethane to pre-impregnate the glass fiber yarn, and then coating it a second time after weaving to fill the gaps between the yarns, forming a quasi-dense barrier, improving the ability to prevent small pests, increasing the weaving density and ensuring sufficient impregnation, and reducing weaving gaps, reducing the gaps in the force exerted by rodents and ants, and ensuring stability. In addition, the resin in the glass fiber resin integrated layer 105 contains a rodent- and ant-proof masterbatch mixed inside the nylon outer sheath layer 106, ensuring the protective stability of the nylon outer sheath layer 106.

[0033] In another implementation scheme, such as Figures 1-9 As shown, the encapsulated sustained-release microcapsules 22 are uniformly distributed in a circular linear pattern inside the nylon outer sheath layer 106. The encapsulated sustained-release microcapsules 22 are composed of a nano-scale polymer capsule shell and an environmentally friendly repellent filler. The nylon outer sheath layer 106 is made of glass fiber impregnated with bio-based and biomimetic repellent and tightly woven together. The encapsulated sustained-release microcapsules 22 are located inside the nylon outer sheath layer 106.

[0034] Materials such as nylon and polyamide 12 are often directly referred to as flexible armor materials. They possess extremely high strength, hardness, and toughness, are wear-resistant, tear-resistant, and have strong impact resistance. Compared with traditional hard metal armor, they have excellent flexibility, a smaller bending radius, and the sheath does not require additional chemical repellents. Its high hardness and wear-resistant physical properties alone can effectively prevent damage from rats and termites. At the same time, it is also environmentally friendly and non-toxic, making it very suitable for complex environments such as railways and mines. It can also make up for the shortcomings of the glass fiber resin integrated layer 105, exhibiting flexibility and reducing weight. The rodent- and termite-repellent active ingredients are encapsulated in polymer microcapsules or mesoporous nanomaterials coated with slow-release microcapsules 22. By controlling the thickness of the capsule wall or the pore size, the intelligent responsive release of the agent can be achieved, such as accelerating release only when the temperature rises, the humidity increases, or the mechanical stress is applied, which greatly extends the shelf life and reduces the environmental burden caused by excessive release in the early stage. This approach combines bio-based and biomimetic repellents, abandoning the synthetic pesticide route and turning to plant extracts such as capsaicin derivatives, azadirachtin, citronellal, or insect pheromone analogs. Utilizing taste / olfactory aversion mechanisms rather than neurotoxicity to repel pests fundamentally solves the problems of soil residue and ecotoxicity, increasing safety and making it applicable to scenarios such as water sources and ecological protection areas.

[0035] In another implementation scheme, such as Figures 1-9 As shown, both the socket 5 and the plug 11 are connected to the inner core 101 of the multi-core wire. The dimensions of the plug 11 are compatible with those of the socket 5, and the dimensions of the male connector 2 are compatible with those of the female connector 7.

[0036] The socket 5 and plug 11 are connected, corresponding to the male connector 2 and female connector 7, forming a nested structure to reduce gaps and leaks, thus enabling insertion. Reducing gaps prevents rodents and ants from intruding and gnawing, avoiding 30% of gnawing at the joints.

[0037] In another implementation scheme, such as Figures 1-9 As shown, the bottom end of the return spring 14 is fixedly installed inside the pin groove 15. The sealing strip 4 is linearly and evenly distributed on the outside of the male connector 2. The positioning pin 6 and the pin groove 15 are circumferentially and evenly distributed on the outside of the male connector 2. The positioning pin 6 and the sealing strip 4 are linearly and alternately distributed. The pin hole 10 is circumferentially and evenly distributed inside the female connector 7. The specifications and dimensions of the pin hole 10 are compatible with the specifications and dimensions of the positioning pin 6.

[0038] When the male connector 2 and female connector 7 are inserted, the positioning pin 6 is compressed and returns, compressing the return spring 14. The sealing strip 4 is deformed under pressure to fill and seal the gap between the male connector 2 and female connector 7, forming an airtight space on opposite sides of the male connector 2 and female connector 7. Then, the socket 5 and plug 11 are connected, and the positioning pin 6 reaches the pin hole 10. The return spring 14 lifts the positioning pin 6 back to its original position and embeds it into the pin hole 10 for locking, thus achieving the physical locking pin function. Combined with negative pressure, the stability of the structure is ensured.

[0039] In another implementation scheme, such as Figures 1-9 As shown, the pressure relief holes 12 are evenly distributed in a circle on the inside of the outer side of the male connector 2. The pressure relief holes 12 are L-shaped. The top of the pressure relief holes 12 is connected to the inside of the screw holes 13. A flexible sealing post 20 is movably installed on the top of the pressure relief holes 12.

[0040] By inserting the male connector 2 and female connector 7 together, an airtight space is formed under the sealing of the sealing strip 4 and the special sealing ring 8. The air pressure gradually increases and is discharged through the pressure relief hole 12, which pushes the edge hollow rubber ring 17 and the positioning spring 19 to achieve one-way opening. The gas is discharged through the guide screw hole 13 of the pressure relief hole 12. Then the socket 5 and the plug 11 are connected, and the positioning pin 6 reaches the pin hole 10 to perform physical locking, so as to achieve stable operation effect of air pressure coordination.

[0041] In another implementation scheme, such as Figures 1-9 As shown, the side hollow groove 18 is fixedly installed inside the pressure relief hole 12, the middle hollow plate 16 has a hollow hole in the middle, and the outer sides of the side hollow rubber ring 17 and the side hollow groove 18 are also hollowed out. The middle hollow plate 16, the side hollow rubber ring 17, the side hollow groove 18 and the positioning spring 19 are all linearly and evenly distributed inside the pressure relief hole 12.

[0042] When the gas is discharged through the pressure relief hole 12, the perforated rubber ring 17 and the positioning spring 19 on the top move to achieve a one-way opening. The gas is discharged through the guide screw hole 13 of the pressure relief hole 12. The linear arrangement of the multi-position structure further ensures the fit of the structure. It can also be replaced with other one-way structures to cooperate with air pressure and negative pressure sealing operations.

[0043] In another implementation scheme, such as Figures 1-9 As shown, the positioning screw holes 9 are evenly distributed in a circle inside the female connector 7 and the specially made sealing ring 8. The size of the positioning screw holes 9 is compatible with the size of the screw holes 13, and the size of the outer limiting ring 3 is compatible with the size of the specially made sealing ring 8.

[0044] The positioning screw hole 9 is aligned with the screw hole 13 to provide a hole for the screw. The screw also seals the holes of the screw hole 13 and the positioning screw hole 9, reducing structural gaps. Through multi-directional sealing protection, combined with the corrosion-resistant metal material on the outside of the male connector 2 and the female connector 7, the stability of the joint is ensured, and the stability of the structure is increased.

[0045] In another implementation scheme, such as Figures 1-9 As shown, the outer sides of the male connector 2, the outer limiting ring 3, the female connector 7, and the special sealing ring 8 are all coated with an anti-repellent coating.

[0046] A repellent coating is used to protect the external structure of the male connector 2, the outer limiting ring 3, the female connector 7, and the special sealing ring 8, ensuring that rodents and ants avoid gnawing on them and reducing the effect of metal attracting rodents. Some studies have shown that rats have a preference for the tactile feedback and biting sensation of metal surfaces, and metal armor sometimes becomes a target for gnawing. Ensuring that the outer side of the metal material is protected against repulsion reduces damage to the external corrosion-resistant layer and enhances the structural performance.

[0047] In another implementation scheme, such as Figures 1-9 As shown, a plurality of integrated optical fiber sensing wires 23 are sandwiched between the nylon outer sheath layer 106 and the glass fiber resin integrated layer 105. The integrated optical fiber sensing wires 23 are evenly distributed in a circular pattern on the opposite sides of the glass fiber resin integrated layer 105 and the nylon outer sheath layer 106.

[0048] The passive protection is upgraded to active sensing by embedding sensing optical fibers / wires and integrating the two. Distributed optical fiber sensors or dedicated sensing wires are integrated into the cable sheath. When rodents or ants cause sheath deformation, abnormal temperature, or chemical leakage, the system can locate the damage point and issue an alarm in real time, thus improving the system from post-repair to pre-warning. Redundant structures are provided for active protection to ensure the relative stability of the structure.

[0049] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rodent-proof and ant-proof low-voltage cable, comprising a cross-linked polyethylene cable body (1), characterized in that: A male connector (2) is fixedly connected to one end of the cross-linked polyethylene cable body (1). An outer limiting ring (3) is fixedly sleeved on the outside of the male connector (2). Several screw holes (13) are opened inside the outer limiting ring (3). A socket seat (5) is fixedly installed on the outside of the end of the male connector (2) away from the cross-linked polyethylene cable body (1). Several sealing strips (4) are fixedly sleeved on the outside of the male connector (2). Several pin grooves (15) are opened on the outside of the male connector (2). A positioning pin (6) is slidably installed inside the pin groove (15). A return spring (14) is fixedly installed at the bottom of the positioning pin (6). A pressure relief hole (12) is opened on the outside of one end of the male connector (2). A number of hollow plates (16) are fixedly installed inside the hole (12). A hollow rubber ring (17) is attached to one side of the hollow plate (16). A positioning spring (19) is fixedly installed on one side of the hollow rubber ring (17). A hollow groove (18) is fixedly installed on the other end of the positioning spring (19). A female connector (7) is fixedly connected to the other end of the cross-linked polyethylene cable body (1). A special sealing ring (8) is fixedly installed on the outer end of the female connector (7). A number of positioning screw holes (9) are opened inside the special sealing ring (8) and the female connector (7). A number of pin holes (10) are opened inside the female connector (7). A plug socket (11) is fixedly installed inside the female connector (7). The cross-linked polyethylene cable body (1) includes a multi-core inner core (101), a mica tape layer (102) is wound around the outside of the multi-core inner core (101), a cross-linked polyethylene insulation layer (103) is fixedly installed on the outside of the mica tape layer (102), a heat insulation layer (107) is covered on the outside of the cross-linked polyethylene insulation layer (103), a honeycomb air chamber layer (104) is fixedly sleeved on the outside of the heat insulation layer (107), a glass fiber resin integrated layer (105) is covered on the outside of the honeycomb air chamber layer (104), a nylon outer sheath layer (106) is fixedly sleeved on the outside of the glass fiber resin integrated layer (105), a plurality of self-healing microcapsules (21) are impregnated on the inside of the glass fiber resin integrated layer (105), and a plurality of coated slow-release microcapsules (22) are impregnated on the inside of the nylon outer sheath layer (106).

2. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The self-healing microcapsules (21) are evenly distributed in a circumferential linear pattern on the inner side of the glass fiber resin integrated layer (105). The glass fiber resin integrated layer (105) is pre-impregnated with modified epoxy resin and coated twice after weaving to fill the gaps between the yarns and form a quasi-dense barrier. The self-healing microcapsules (21) are impregnated inside the glass fiber resin integrated layer (105).

3. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The encapsulated sustained-release microcapsules (22) are evenly distributed in a circular linear pattern inside the nylon outer sheath layer (106). The encapsulated sustained-release microcapsules (22) are composed of a nano-scale polymer capsule shell and an environmentally friendly repellent filler. The nylon outer sheath layer (106) is made of glass fiber impregnated with bio-based and biomimetic repellent and tightly woven together. The encapsulated sustained-release microcapsules (22) are located inside the nylon outer sheath layer (106).

4. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: Both the socket (5) and the plug (11) are connected to the inner core (101) of the multi-core wire. The size of the plug (11) is compatible with the size of the socket (5), and the size of the male connector (2) is compatible with the size of the female connector (7).

5. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The bottom end of the return spring (14) is fixedly installed inside the pin groove (15). The sealing strip (4) is linearly and evenly distributed on the outside of the male connector (2). The positioning pin (6) and the pin groove (15) are circumferentially and evenly distributed on the outside of the male connector (2). The positioning pin (6) and the sealing strip (4) are linearly and alternately distributed. The pin hole (10) is circumferentially and evenly distributed inside the female connector (7). The size of the pin hole (10) is compatible with the size of the positioning pin (6).

6. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The pressure relief holes (12) are evenly distributed around the inside of the outside of the male connector (2). The pressure relief holes (12) are L-shaped. The top of the pressure relief holes (12) is connected to the inside of the screw hole (13). A flexible sealing post (20) is movably installed on the top of the pressure relief holes (12).

7. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The side hollow groove (18) is fixedly installed inside the pressure relief hole (12). The middle hollow plate (16) has a hollow hole in the middle. The side hollow rubber ring (17) and the side hollow groove (18) both have hollow holes on their outer sides. The middle hollow plate (16), the side hollow rubber ring (17), the side hollow groove (18) and the positioning spring (19) are all linearly and evenly distributed inside the pressure relief hole (12).

8. The rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The positioning screw holes (9) are evenly distributed in a circle inside the female connector (7) and the special sealing ring (8). The size of the positioning screw holes (9) is compatible with the size of the screw holes (13), and the size of the outer limiting ring (3) is compatible with the size of the special sealing ring (8).

9. A rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: The outer sides of the male connector (2), the outer limiting ring (3), the female connector (7), and the special sealing ring (8) are all coated with an anti-repellent coating.

10. A rodent-proof and termite-proof low-voltage cable according to claim 1, characterized in that: A plurality of integrated optical fiber sensing wires (23) are sandwiched between the opposite sides of the nylon outer sheath layer (106) and the glass fiber resin integrated layer (105). The integrated optical fiber sensing wires (23) are evenly distributed in a circular pattern on the opposite sides of the glass fiber resin integrated layer (105) and the nylon outer sheath layer (106).

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