Rodent and termite resistant, fire-retardant, fire-resistant, water-resistant power cable

Abstract

The application discloses a kind of rat and termite prevention flame-retardant fire-resistant water-blocking power cable, it is related to power cable technical field, including conductor assembly, the outside of conductor assembly is provided with fire-resistant assembly, the outside of fire-resistant assembly is provided with water-blocking assembly.This kind of rat and termite prevention flame-retardant fire-resistant water-blocking power cable, the first rubber strip inside helical support piece is mixed with repellent, and repellent has strong smell, and it has certain driving effect to rat and termite, when rat and termite bite first rubber strip, close contact will occur, so that it can effectively stimulate rat and termite to make it away, and the second rubber strip is mixed with capsaicin, capsaicin has irritancy, when rat and termite bite, it will produce strong irritation to the sense organ of rat and termite, so that it feels uncomfortable and unwilling to approach or bite again, the design structure is simple, can effectively improve the rat and termite prevention performance of power cable in outdoor, to avoid being destroyed by rat and termite and cause safety hazard.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power cable, in particular to a kind of rat and ant-proof flame-retardant fire-retardant water-blocking power cable. BACKGROUND

[0002] Power cable is used for transmission and distribution of electric power cable, power cable is often used in urban underground power network, power station outgoing line, industrial and mining enterprise internal power supply and cross-river underwater power transmission line, in power line, the proportion of cable is gradually increasing, power cable is used to transmit and distribute high-power electric power in the main line of power system, including 1-500kV and above various voltage levels, various insulation power cable.

[0003] In the prior art, such as Chinese patent publication No. CN204884661U, a kind of high flame-retardant, waterproof, fire-retardant power cable is disclosed, the cable core includes a plurality of insulating wire core and the intermediate filling core between insulating wire core, the insulating wire core includes tightly pressed stranded copper conductor, fluorine gold mica tape and insulating layer arranged from inside to outside in turn, the cable core outside is provided with vacuum extrusion PE waterproof layer, steel wire braided attached layer, tape and outer sheath from inside to outside in turn. The cable has excellent high flame-retardant, waterproof, fire-retardant and other characteristics, and can be widely used in power plant, substation and high-rise building and other places requiring flame-retardant and fire-retardant, and the product has excellent performance.

[0004] Although the above-mentioned cable has excellent high flame-retardant, waterproof, fire-retardant and other characteristics, and can be widely used in power plant, substation and high-rise building and other places requiring flame-retardant and fire-retardant, and the product has excellent performance, but power cable is usually used in outdoor environment, and needs to be laid on the ground or underground in the section where it cannot be overhead, and outdoor rodents lack food and often gnaw the ground power cable, and the underground cable is easy to be gnawed by ants, so the power cable is easy to be damaged by rats and ants in outdoor, and there is a great safety hazard

[0005] Therefore, we propose a kind of rat and ant-proof flame-retardant fire-retardant water-blocking power cable to solve the problems raised in the above. SUMMARY

[0006] The present application aims to provide a kind of rat and ant-proof flame-retardant fire-retardant water-blocking power cable to solve the problems raised in the above background, photovoltaic cable is usually used in outdoor environment, often gnawed by ants and rats, the outer layer of photovoltaic cable is damaged after being gnawed by ants and rats, and there is a great safety hazard.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A rat and termite prevention, fire-retardant, fire-resistant and water-resistant power cable, comprising a conductor assembly, an outer portion of the conductor assembly is provided with a fire-resistant assembly, an outer portion of the fire-resistant assembly is provided with a water-resistant assembly, an outer portion of the water-resistant assembly is provided with a rat and termite prevention assembly, the rat and termite prevention assembly comprises an outer sheath, an outer surface of the outer sheath is connected with a spiral support sheet, an outer surface of the spiral support sheet is connected with an upper clamping edge near a lower position, an outer surface of the spiral support sheet is connected with a lower clamping edge near an upper position, an outer surface of the outer sheath is wound with a mounting strip, first rubber strips are adhesively connected between inner surface walls of the mounting strip, and second rubber strips are adhesively connected to outer surfaces of the first rubber strips.

[0008] Preferably, the first rubber strips are made of rubber raw materials and diethyltoluamide, and the second rubber strips are made of rubber raw materials and capsaicin.

[0009] Preferably, the mounting strip is helically shaped as a whole and has a convex shape at an edge of the outer surface, and the outer surface of the mounting strip near the edge is in plug-in connection with the upper clamping edge and the lower clamping edge, respectively.

[0010] Preferably, the water-resistant assembly comprises a water-blocking film, an inner surface wall of the water-blocking film is connected with a waterproof layer, the waterproof layer is made of polyethylene material, and the water-blocking film has a thickness of 1 mm.

[0011] Preferably, a plurality of spherical grooves are arranged on an inner surface wall of the outer sheath, a ball bearing is arranged in each of the spherical grooves, an outer surface of the ball bearing is in abutment with an outer surface of the water-blocking film, and the outer surface of the ball bearing is coated with silicon oil.

[0012] Preferably, a rubber sleeve is arranged in the waterproof layer, a helical groove is arranged on an outer surface of the rubber sleeve, a water stop belt is arranged in the helical groove, and the water stop belt is helically shaped.

[0013] Preferably, the fire-resistant assembly comprises a heat insulation layer, the heat insulation layer is made of compressed rock wool, and a heat conduction shell is arranged in the heat insulation layer, the heat conduction shell is made of metal aluminum material.

[0014] Preferably, a plurality of accommodating grooves are arranged on an inner surface wall of the heat conduction shell, a paraffin sheet is arranged in each of the accommodating grooves, a heat conduction layer is arranged in the heat conduction shell, the heat conduction layer is made of metal copper material, and the heat conduction layer is in close abutment with the paraffin sheet.

[0015] Preferably, the conductor assembly comprises an inner sheath, a filling layer is arranged in the inner sheath, the inner sheath is made of polyvinyl chloride material, and the filling layer is made of glass fiber rope.

[0016] Preferably, a plurality of first semiconductor shielding layers are provided inside the filling layer, an insulating layer is provided inside the first semiconductor shielding layer, a second semiconductor shielding layer is provided inside the insulating layer, and a guide core is provided inside the second semiconductor shielding layer.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. DEET is mixed into the first rubber strip inside the spiral support piece. DEET has a strong odor and has a certain repellent effect on rats and ants. When rats and ants bite the first rubber strip, close contact will occur, which can effectively stimulate the rats and ants to stay away. The second rubber strip is mixed with capsaicin, which is irritating. When rats and ants bite, it will strongly stimulate their senses, making them feel uncomfortable and unwilling to approach or bite again. This design has a simple structure and can effectively improve the rat and ant resistance of power cables outdoors, thereby avoiding safety hazards caused by damage by rats and ants.

[0019] 2. The mounting strip is made of thermoplastic plastic, which can be bent under a certain pressure and is not easy to break. When part of the first rubber strip and the second rubber strip on the surface of the outdoor power cable is damaged, a new mounting strip with the first rubber strip and the second rubber strip attached thereto can be used for replacement. During replacement, the power cable is bent to increase the pitch between the spiral support pieces, and then one end of the new mounting strip is inserted from this position and pushed. At this time, the protrusions on both sides of the mounting strip will be limited by the upper and lower clamping edges, and the strip will be spirally wound to the surface of the outer sheath along the path of the spiral support piece, thereby completing the replacement and maintenance of the first rubber strip and the second rubber strip. The design structure is simple, can effectively avoid the problem that the first and second rubber strips cannot be replaced after being damaged, resulting in a decrease in anti-rat and ant performance, and is highly practical.

[0020] 3. The waterproof layer, waterproof membrane and rubber sleeve in this power cable cooperate with each other to effectively improve the water-blocking performance of the cable. In addition, a spiral groove is provided on the surface of the rubber sleeve, and the waterstop in the spiral groove is spirally coiled on the outside of the rubber sleeve. However, there is a small gap between the waterstop and the spiral groove. When the external water-blocking mechanism is damaged, water will pass through the waterproof layer and will first enter the gap between the waterstop and the spiral groove. The waterstop will absorb the water and will swell after absorbing too much water. The expanded waterstop will enter the damaged gaps and holes on the outside, thereby blocking the damaged area and avoiding safety hazards of the power cable after rain. This design structure is novel and greatly improves the water-blocking performance and safety of the power cable.

[0021] 4, By designing the heat-conducting shell to absorb the residual heat blocked by the heat insulation layer and transfer to the paraffin wax sheet in the containing groove, by designing the heat-conducting layer on the inner side of the heat-conducting shell to transfer the heat inside the cable to the inside of the paraffin wax sheet, when the paraffin wax sheet has the phase change characteristic, when the heat is too much, the solid-liquid phase change occurs, and a certain amount of heat is consumed in the phase change process, when the temperature of the cable decreases, the paraffin wax sheet will produce liquid-solid phase change, although a certain amount of latent heat of crystallization is released, but it will not cause pressure burden to the power cable, the design structure is novel, which can effectively improve the heat resistance and fire resistance of the traditional power cable, so that the safety factor of the power cable is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a top view of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0023] Figure 2 It is a front view of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0024] Figure 3 It is a sectional view of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0025] Figure 4 It is an expanded view of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0026] Figure 5 It is a conductor assembly structure schematic diagram of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0027] Figure 6 It is a fire-resistant assembly sectional view of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0028] Figure 7 It is a water-resistant assembly expanded view of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0029] Figure 8 It is a schematic diagram of the fire-retardant and fire-resistant water-resistant power cable of the application;

[0030] Figure 9 It is Figure 8 The enlarged view of A in the middle.

[0031] In the figure:

[0032] 1, conductor assembly; 101, inner sheath; 102, filling layer; 103, first semiconductive shielding layer; 104, insulating layer; 105, second semiconductive shielding layer; 106, conductor core; 2, fireproof assembly; 201, heat insulation layer; 202, heat conduction shell; 203, accommodating groove; 204, paraffin sheet; 205, heat conduction layer; 3, water blocking assembly; 301, water blocking film; 302, waterproof layer; 303, rubber sleeve; 304, spiral groove; 305, water stop belt; 4, rat and termite prevention assembly; 401, outer sheath; 402, spherical groove; 403, ball; 404, spiral support sheet; 405, upper clamping edge; 406, lower clamping edge; 407, mounting strip; 408, first rubber strip; 409, second rubber strip. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-9 The present application provides a technical solution: a rat and termite prevention fireproof and water blocking power cable, comprising a conductor assembly 1, the outer part of the conductor assembly 1 is provided with a fireproof assembly 2, the outer part of the fireproof assembly 2 is provided with a water blocking assembly 3, the outer part of the water blocking assembly 3 is provided with a rat and termite prevention assembly 4, the rat and termite prevention assembly 4 comprises an outer sheath 401, the outer surface of the outer sheath 401 is connected with a spiral support sheet 404, the outer surface of the spiral support sheet 404 is connected with an upper clamping edge 405 near the lower position, the outer surface of the spiral support sheet 404 is connected with a lower clamping edge 406 near the upper position, the outer surface of the outer sheath 401 is wound with a mounting strip 407, the inner surface wall of the mounting strip 407 is adhesively connected with a first rubber strip 408, the outer surface of the first rubber strip 408 is adhesively connected with a second rubber strip 409, the device increases the spiral support sheet 404 outside the outer sheath 401, when the power cable is placed above the outdoor ground, the spiral support sheet 404 plays a role in supporting the power cable off the ground, so that the surface of the power cable is not affected by the outdoor wet ground, improving the service life of the power cable outdoors, and the spiral support sheet 404 is made of thin steel sheet, has high mechanical strength, and has small spiral spacing, so that rodents are difficult to bite the spiral support sheet 404 and also cannot directly gnaw the power cable by passing through the spiral support sheet 404, achieving the effect of preventing rats from biting, improving the practicability of the power cable in outdoor use.

[0035] As Figures 1-4 , Figure 8 and Figure 9As shown, the first rubber strip 408 is made of rubber raw material and DEET, and the second rubber strip 409 is made of rubber raw material and capsaicin. The first rubber strip 408 is made of rubber raw material and DEET, and a stirring device is needed to ensure that the DEET is uniformly dispersed in the first rubber strip 408 during the preparation of the raw material. The second rubber strip 409 is made of capsaicin and rubber raw material, and a stirring device is needed to ensure that the capsaicin is uniformly dispersed in the second rubber strip 409 during the preparation of the raw material. The first rubber strip 408 inside the helical support piece 404 contains DEET, which has a strong smell and can drive mice and ants away. When the mice and ants bite the first rubber strip 408, they will come into close contact, which can effectively stimulate the mice and ants to keep away. The second rubber strip 409 contains capsaicin, which has a strong stimulating effect. When the mice and ants bite, they will have a strong stimulation to their senses, making them feel uncomfortable and unwilling to approach or bite. The design is simple and can effectively improve the anti-mouse and ant performance of the power cable outdoors, thereby avoiding safety hazards caused by damage to the power cable by mice and ants.

[0036] As shown in Figures 1-4 , Figure 8 and Figure 9 , the mounting strip 407 is helically twisted and has a convex shape at the edge of the outer surface. The outer surface of the mounting strip 407 is connected to the upper clamping edge 405 and the lower clamping edge 406 by insertion. The mounting strip 407 is made of thermoplastic plastic and can be bent under pressure without breaking. When some of the first rubber strip 408 and the second rubber strip 409 on the surface of the outdoor power cable are damaged, a new mounting strip 407 with the first rubber strip 408 and the second rubber strip 409 can be used for replacement. The mounting strip 407 is inserted into the power cable and pushed to the surface of the outer sheath 401, and the two sides of the mounting strip 407 are limited by the upper clamping edge 405 and the lower clamping edge 406. The design is simple and can effectively avoid the problem of reduced anti-mouse and ant performance caused by the inability to replace the first rubber strip 408 and the second rubber strip 409 after damage. It has high practicality.

[0037] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 7As shown, the water blocking assembly 3 comprises a water blocking film 301, and the inner surface wall of the water blocking film 301 is connected with a waterproof layer 302 made of polyethylene material. The thickness of the water blocking film 301 is 1 mm, and the waterproof layer 302 is made of polyethylene material, has good waterproof performance and low cost, can improve the waterproof performance of the power cable, and the water blocking film 301 pasted on the surface can further block water from entering the inside of the power cable.

[0038] As shown in Figures 1-4 , Figure 8 and Figure 9 , the inner surface wall of the outer sheath 401 is arranged with a plurality of spherical grooves 402, and the spherical grooves 402 are arranged with a plurality of spherical grooves 402. The inner surface of the spherical groove 402 is provided with a plurality of spherical grooves 402, and the outer surface of the spherical groove 402 is provided with a plurality of spherical grooves 402. The outer surface of the spherical groove 402 is coated with silicone oil, and the outer sheath 401 is designed in sections. The outer spiral support piece 404 and other components of each section of the outer sheath 401 are consistent in length, and the spherical ball 403 inside the outer sheath 401 is freely movable and embedded in the spherical groove 402. The spherical ball 403 is in contact with the water blocking film 301, so that each section of the outer sheath 401 and the spiral support piece 404 can rotate freely, so that the outer sheath 401 and the spiral support piece 404 can rotate adaptively according to the cable twisting during outdoor laying of the power cable, avoiding the change of the distance between the upper clamping edge 405 and the lower clamping edge 406 due to the twisting of the spiral support piece 404, thereby ensuring the limiting effect of the upper clamping edge 405 and the lower clamping edge 406 on the mounting strip 407. By coating the surface of the spherical ball 403 with silicone oil, the spherical ball 403 rolls more smoothly, avoiding the friction between the spherical groove 402 inside or the surface of the water blocking film 301 and the spherical ball 403.

[0039] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 7As shown, the inside of the waterproof layer 302 is provided with a rubber sleeve 303, the outer surface of the rubber sleeve 303 is provided with a spiral groove 304, the inside of the spiral groove 304 is provided with a water stop belt 305, the water stop belt 305 is spiral, the waterproof layer 302, the water-proof film 301 and the rubber sleeve 303 in the power cable cooperate to effectively improve the water resistance of the cable, and the surface of the rubber sleeve 303 is provided with a spiral groove 304, and the water stop belt 305 in the spiral groove 304 is spirally wound outside the rubber sleeve 303, but there is a small gap between the water stop belt 305 and the spiral groove 304. When the external water resistance mechanism is damaged, the water passing through the waterproof layer 302 will first enter the gap between the water stop belt 305 and the spiral groove 304, and the water stop belt 305 will absorb the water, and the water will expand after being absorbed too much. The expanded water stop belt 305 enters the damaged gap hole outside, thereby plugging the damaged part to avoid safety hazards of the power cable after rain, which has a novel design and greatly improves the water resistance and safety of the power cable.

[0040] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 6 , the fire-resistant assembly 2 includes a heat insulation layer 201 made of rock wool compression, and the inside of the heat insulation layer 201 is provided with a heat-conducting shell 202 made of aluminum material. The heat insulation layer 201 is made of rock wool, which has good heat insulation and fireproof performance, so as to effectively block the external high temperature heat from being transmitted to the inside of the cable.

[0041] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 6 , the inner surface wall of the heat-conducting shell 202 is arranged with a plurality of accommodating grooves 203, the inside of the accommodating grooves 203 is provided with paraffin pieces 204, the inside of the heat-conducting shell 202 is provided with a heat-conducting layer 205 made of copper material. The heat-conducting layer 205 and the paraffin pieces 204 are closely combined, the heat-conducting shell 202 absorbs the residual heat blocked by the heat insulation layer 201 and transmits it to the paraffin pieces 204 in the accommodating grooves 203, and the heat-conducting layer 205 is designed inside the heat-conducting shell 202 to transmit the heat in the cable to the inside of the paraffin pieces 204. The paraffin pieces 204 have phase change characteristics, and when the heat is too much, the paraffin pieces 204 will undergo solid-liquid phase change and consume a certain amount of heat during the phase change process. When the temperature of the cable decreases, the paraffin pieces 204 will undergo liquid-solid phase change, although a certain amount of latent heat of crystallization will be released, but it will not cause pressure burden to the power cable. The design is novel, which can effectively improve the heat resistance and fire resistance of the traditional power cable, so as to improve the safety factor of the power cable.

[0042] As shown in Figure 1、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0043] As shown in Figure 1 、 Figure 3 、 Figure 4 and Figure 5 The inside of the filling layer 102 is provided with a plurality of first semiconductor shielding layers 103, the inside of the first semiconductor shielding layer 103 is provided with an insulating layer 104, the inside of the insulating layer 104 is provided with a second semiconductor shielding layer 105, and the inside of the second semiconductor shielding layer 105 is provided with a core 106. The first semiconductor shielding layer 103 and the second semiconductor shielding layer 105 are both high molecular materials with semiconductor properties after cross-linking treatment, such as cross-linked polyethylene. Cross-linking treatment can make the molecular structure of the material form a network, thereby having heat resistance, mechanical strength and other properties. When used as a shielding layer, it can better play its role in uniform electric field and other aspects, while having certain electrical conductivity and stability, thereby adapting to various environmental and working conditions of cable operation. Other materials can also be replaced according to needs. The insulating layer 104 mainly plays the role of isolating the core 106 from the outside world, preventing current leakage, and ensuring the safe transmission of current in the core 106.

[0044] The method for using the device and the working principle: the device increases the spiral support sheet 404 outside the outer sheath 401, when the power cable is placed on the outdoor ground, the spiral support sheet 404 supports the power cable off the ground, so that the surface of the power cable is not affected by the outdoor wet ground, and the service life of the power cable is improved. The spiral support sheet 404 is made of thin steel sheet, has high mechanical strength, and small screw pitch, so that the mouse is difficult to bite the spiral support sheet 404 and cannot directly gnaw the power cable, which plays a role in preventing mice from biting, improves the practicability of the power cable in outdoor use, and the first rubber strip 408 inside the spiral support sheet 404 is mixed with DEET, which has a strong smell and can drive mice and ants away. When the mouse bites the first rubber strip 408, close contact occurs, so that the mouse can be effectively stimulated to keep away. The second rubber strip 409 is mixed with capsaicin, which has a strong stimulating effect. When the mouse bites, it will produce a strong stimulation to the mouse's sense organs, making it feel uncomfortable and unwilling to approach or bite. The design is simple, can effectively improve the anti-mouse performance of the power cable in outdoor use, thereby avoiding the safety hazard caused by the damage of the mouse, and the installation strip 407 is made of thermoplastic plastic, which can be bent under certain pressure and is not easy to break. When part of the first rubber strip 408 and the second rubber strip 409 on the surface of the outdoor power cable are damaged, the installation strip 407 with the first rubber strip 408 and the second rubber strip 409 can be replaced. When replacing, the power cable is bent, so that the screw pitch between the spiral support sheets 404 increases, and then one end of the new installation strip 407 is inserted from the position and pushed. At this time, the two sides of the installation strip 407 are limited by the upper and lower clamping edges 405 and 406, and the spiral support sheet 404 is spirally wound on the surface of the outer sheath 401, so that the replacement and maintenance of the first rubber strip 408 and the second rubber strip 409 are completed. The design is simple, can effectively avoid the problem of decreased anti-mouse performance caused by the damaged first rubber strip 408 and second rubber strip 409, and has high practicability. Moreover, the outer sheath 401 adopts a segmented design, the spiral support sheet 404 and other components outside the outer sheath 401 are consistent with the length of each segment of the outer sheath 401, and the ball 403 inside the outer sheath 401 is freely movable in the spherical groove 402. The surface of the ball 403 is in contact with the water-proof film 301, so that each segment of the outer sheath 401 and the spiral support sheet 404 can rotate freely, so that the outer sheath 401 and the spiral support sheet 404 can adaptively rotate according to the cable twisting during outdoor laying of the power cable, thereby avoiding the change of the distance between the upper and lower clamping edges 405 and 406 caused by the twisting of the spiral support sheet 404 during the length process, thereby ensuring the limiting effect of the upper and lower clamping edges 405 and 406 on the installation strip 407.The silicone oil is applied on the surface of the ball 403 to make the ball 403 roll more smoothly, avoid the ball-shaped groove 402 inside or the surface of the waterproof film 301 from being stuck due to friction, and the waterproof layer 302, the waterproof film 301 and the rubber sleeve 303 in the power cable cooperate to effectively improve the water resistance of the cable. In addition, the rubber sleeve 303 is provided with a spiral groove 304, and the water stop belt 305 in the spiral groove 304 is spirally wound outside the rubber sleeve 303. However, there is a small gap between the water stop belt 305 and the spiral groove 304. When the external water resistance mechanism is damaged and water passes through the waterproof layer 302, it will first enter the gap between the water stop belt 305 and the spiral groove 304. The water stop belt 305 will absorb water, and when the water absorption is too much, the water stop belt 305 will swell and enter the damaged gap hole outside, thereby plugging the damaged part to avoid safety hazards of the power cable after rain. The design structure is novel, which greatly improves the water resistance and safety of the power cable. At the same time, the heat-conducting shell 202 is designed to absorb the heat remaining after the heat insulation layer 201 blocks and transfer it to the paraffin sheet 204 in the containing groove 203. The heat-conducting layer 205 is designed inside the heat-conducting shell 202 to transfer the heat inside the cable to the inside of the paraffin sheet 204. When the paraffin sheet 204 has a phase change characteristic, it will change from solid to liquid when the heat is too much. In the phase change process, a certain amount of heat will be consumed. When the temperature of the cable decreases, the paraffin sheet 204 will change from liquid to solid, although it will release a certain amount of latent heat of crystallization, but it will not cause pressure burden to the power cable. The design structure is novel, which can effectively improve the heat resistance and fire resistance of the traditional power cable, thereby improving the safety factor of the power cable.

[0045] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rodent- and termite-resistant, fire-retardant, fire-resistant, water-resistant power cable comprising a conductor assembly (1), characterized in that: The outer part of the conductor assembly (1) is provided with a fireproof assembly (2), the outer part of the fireproof assembly (2) is provided with a water blocking assembly (3), and the outer part of the water blocking assembly (3) is provided with a rat and termite prevention assembly (4). The rat and termite prevention assembly (4) comprises an outer sheath (401), the outer surface of the outer sheath (401) is connected with a spiral support sheet (404), the outer surface of the spiral support sheet (404) is connected with an upper clamping edge (405) near the lower position, the outer surface of the spiral support sheet (404) is connected with a lower clamping edge (406) near the upper position, the outer surface of the outer sheath (401) is wound with a mounting strip (407), and the inner surface walls of the mounting strip (407) are adhesively connected with a first rubber strip (408), and the outer surface of the first rubber strip (408) is adhesively connected with a second rubber strip (409). The fireproof assembly (2) comprises a heat insulation layer (201), the heat insulation layer (201) is made of rock wool compression, and the heat insulation layer (201) is internally provided with a heat conduction shell (202) made of metal aluminum material. The inner surface walls of the heat conduction shell (202) are arranged with a plurality of accommodating grooves (203), the accommodating grooves (203) are internally provided with paraffin sheets (204), the heat conduction shell (202) is internally provided with a heat conduction layer (205) made of metal copper material, and the heat conduction layer (205) is tightly combined with the paraffin sheets (204). The conductor assembly (1) comprises an inner sheath (101), the inner sheath (101) is internally provided with a filling layer (102), the inner sheath (101) is made of polyvinyl chloride material, and the filling layer (102) is made of glass fiber rope. The filling layer (102) is internally provided with a plurality of first semiconductor shielding layers (103), the first semiconductor shielding layers (103) are internally provided with an insulating layer (104), the insulating layer (104) is internally provided with a second semiconductor shielding layer (105), and the second semiconductor shielding layer (105) is internally provided with a lead core (106).

2. A rodent and termite resistant, fire resistant, water resistant, power cable according to claim 1, characterized in that: The first rubber strip (408) is made of rubber raw material and diethyltoluamide, and the second rubber strip (409) is made of rubber raw material and capsaicin.

3. A rodent and termite resistant, fire resistant, water resistant, power cable according to claim 2, characterized in that: The mounting strip (407) is spirally twisted as a whole and protrudes at the outer surface edges, and the outer surfaces of the mounting strip (407) near the edges are respectively connected with the upper clamping edge (405) and the lower clamping edge (406) in a plug-in connection mode.

4. A rodent and termite resistant, fire resistant, water resistant, power cable according to claim 3, characterized in that: The water blocking assembly (3) comprises a water barrier film (301), the inner surface walls of the water barrier film (301) are connected with a waterproof layer (302) made of polyethylene material, and the thickness of the water barrier film (301) is 1mm.

5. A rodent and termite resistant, fire resistant, water resistant, power cable according to claim 4, characterized in that: The inner surface wall of the outer sheath (401) is arranged with a plurality of spherical grooves (402), the inside of the spherical grooves (402) is provided with a plurality of balls (403), the outer surface of the balls (403) is attached to the outer surface of the waterproof film (301), and the outer surface of the balls (403) is coated with silicon oil.

6. A rodent and termite resistant, fire resistant, water resistant, electrical power cable according to claim 5, characterized in that: The inside of the waterproof layer (302) is provided with a rubber sleeve (303), the outer surface of the rubber sleeve (303) is provided with a spiral groove (304), the inside of the spiral groove (304) is provided with a water stop belt (305), and the water stop belt (305) is spiral.

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