A multifunctional overhead insulated cable

Abstract

The present invention relates to the technical field of insulated cables, and in particular to a multifunctional overhead insulated cable, comprising a plurality of groups of core conductors and a filling base layer arranged on the surfaces of the plurality of groups of core conductors, and an insulating component, and also comprising a heat-conducting component and a protective component; the insulating component can reduce the accumulation of heat in the cable, and the heat can be quickly absorbed by a heat-absorbing layer, and the heat absorbed by the heat-absorbing layer can be further conducted outward by the heat-conducting component, thereby improving the heat dissipation effect of the internal insulating layer and the core conductors, and the protective component can be provided to provide buffer protection for the internal heat-conducting component and the insulating component when subjected to external pressure or impact, effectively reducing the expansion and stress concentration caused by high temperature, causing the risk of aging and cracking of the insulating layer, etc., and can quickly disperse heat, improve the heat dissipation capacity of the cable, ensure electrical performance and safety, and extend the service life of the cable and related accessories.

Description

Technical Field

[0001] The invention relates to the technical field of insulated cables, and in particular to a multifunctional overhead insulated cable. Background Art

[0002] Overhead insulated cable is a power transmission cable with an outer layer covered with insulating material. It is commonly used for overhead long-distance high-voltage power transmission. It has the advantages of waterproof, fireproof, and corrosion-resistant. The bending and bending parts in the cable installation can be replaced by flexible cables or bend-resistant cables. However, during use, the flow of current inside the cable used for long-distance high-voltage power transmission will generate heat. For example, in the hot summer, the overhead insulated cable transmits high-voltage power from the substation to the industrial area far away from the city. The long-distance transmission, coupled with the large power consumption in the industrial area, the cable will overheat due to the large load and the high external ambient temperature. The high temperature generated may cause the molecular structure of the insulating material to change, causing it to expand and soften, and may even cause mechanical deformation or damage to the insulation layer. In particular, when the cable load is too large, the heat generated by the current exceeds the heat dissipation capacity of the cable, and the expansion of the insulation layer may be aggravated, which in turn affects the electrical performance and safety of the cable. If the heat of the cable cannot be effectively dispersed, excessive heat accumulation will occur in the local area. When the local temperature is too high, it will cause thermal stress concentration, resulting in rupture or aging of the insulation layer, as well as cable short circuit, leakage or other faults.

[0003] In view of this, we propose a multifunctional overhead insulated cable. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a multifunctional overhead insulated cable, which can effectively solve the problems of heavy cable load, excessive temperature, heat accumulation, concentrated thermal stress, resulting in cracking and aging of the insulation layer, as well as cable short circuit, leakage or other faults in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a multifunctional overhead insulated cable, comprising a plurality of groups of core conductors and a filling base layer arranged on the surface of the plurality of groups of core conductors;

[0007] and an insulating assembly, including an insulating layer arranged outside the filling base layer, a plurality of thermal expansion grooves opened in the insulating layer, and a heat absorbing layer arranged outside the insulating layer;

[0008] It also includes a heat-conducting component and a protective component, including a heat-conducting layer arranged outside the insulating layer and a plurality of groups of heat-conducting rods arranged inside the heat-conducting layer, and an outer protective layer arranged outside the insulating layer and a plurality of groups of arc-shaped elastic rods arranged inside the outer protective layer;

[0009] The outer protective layer is fixedly mounted on the surface of the heat conducting layer;

[0010] The insulating component also includes a plurality of sets of fan-shaped through grooves opened inside, and the plurality of sets of fan-shaped through grooves and the plurality of sets of thermal expansion grooves are interconnected;

[0011] A plurality of positioning strips are also fixedly connected to the surface of the insulating layer;

[0012] The surface of the insulating layer is also provided with annular elastic pads corresponding to the multiple groups of thermal expansion grooves, the surfaces of the multiple groups of annular elastic pads are all provided with positioning grooves, and the inner cavity side walls of the multiple groups of positioning grooves are all sleeved on the surface of the positioning strip;

[0013] Both ends of the multiple groups of annular elastic pads are fixed by tensioning connecting strips, and the inner cavity side walls of the multiple groups of annular elastic pads are all provided with fixing grooves, and the inner cavity side walls of the multiple groups of fixing grooves are all fixedly connected with heat absorbing layers.

[0014] Furthermore, multiple groups of through holes are provided on the surfaces of the multiple groups of annular elastic pads, and the multiple groups of through holes are connected to the fixing grooves.

[0015] Furthermore, the heat-conducting component also includes a plurality of heat-conducting grooves opened on the inner cavity side wall of the heat-conducting layer, the inner cavity side walls of the plurality of heat-conducting grooves are also clamped on the surface of the annular elastic pad, and the inner cavity side walls of the plurality of heat-conducting grooves are fixedly connected to one end of the heat-conducting rod.

[0016] Furthermore, the other ends of the multiple groups of heat-conducting rods are all inserted into the through holes, and the ends of the multiple groups of heat-conducting rods inserted into the through holes are all fixedly connected to the surface of the heat-absorbing layer.

[0017] Furthermore, the protection component also includes a plurality of groups of annular grooves formed on the side wall of the inner cavity of the outer protection layer, and the plurality of groups of annular grooves are distributed correspondingly to the plurality of groups of annular elastic pads;

[0018] Both ends of the multiple sets of arc-shaped elastic rods are fixedly connected to the inner cavity side walls of the multiple sets of annular grooves, and the convex sides of the multiple sets of arc-shaped elastic rods are also fixedly connected to the inner cavity side walls of the multiple sets of annular grooves.

[0019] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0020] The present invention provides a thermal expansion groove on the insulation layer. When the power consumption is large and the heat of the cable is too large during high-temperature long-distance power transmission, the thermal expansion groove is used to make the expansion of various parts inside the cable relatively independent when the insulation layer is heated and expanded, thereby reducing the stress accumulation during thermal expansion, effectively dissipating the heat of the local overheating area, and reducing the accumulation of heat in the cable. When expanding, the thermal expansion groove of the insulation layer is located close to the heat absorption layer, so that the heat on the insulation layer can be quickly absorbed. At the same time, the heat absorbed by the heat absorption layer can be further conducted outward by the heat conduction component, thereby improving the heat dissipation effect on the internal insulation layer and the core conductor; and The protective components installed can provide buffering protection for the internal thermal conductive components and insulating components when subjected to external pressure or impact, so as to avoid affecting the heat dissipation effect of the cable. At the same time, the thermal conductive components can improve the protection strength of the outer layer of the cable, thereby reducing the risk of the cable insulation layer being exposed due to being eaten by birds during the cable installation process, causing electrical accidents. It can effectively slow down the expansion and stress concentration caused by high temperature, reduce the risk of local overheating, causing aging and cracking of the insulation layer, and can quickly disperse heat, improve the heat dissipation capacity of the cable, ensure electrical performance and safety, and extend the service life of the cable and related accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the planar structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the partial structure of the outer coating layer and the heat conducting layer of the present invention;

[0024] Figure 3 It is a schematic diagram of the partial structure of the disassembly of the annular elastic pad and the insulating layer of the present invention;

[0025] Figure 4 It is a schematic diagram of the partial structure of the heat-conducting groove, the heat-conducting rod and related components of the present invention;

[0026] Figure 5 It is a schematic diagram of the disassembly structure of the heat absorption layer and the annular elastic pad of the present invention.

[0027] The reference numerals in the figure represent: 1, protection component; 101, outer protection layer; 102, annular groove; 103, arc-shaped elastic rod;

[0028] 2. heat conducting component; 201. heat conducting layer; 202. heat conducting groove; 203. heat conducting rod;

[0029] 3. Insulation assembly; 301. Insulation layer; 302. Fan-shaped through groove; 303. Annular elastic pad; 304. Tensioning connecting strip; 305. Through hole; 306. Positioning groove; 307. Heat absorbing layer; 308. Thermal expansion groove; 309. Positioning strip; 3010. Fixing groove;

[0030] 4. Filling base layer; 5. Core conductor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] A multifunctional overhead insulated cable comprises a plurality of groups of core conductors 5 and a filling base layer 4 arranged on the surface of the plurality of groups of core conductors 5; and an insulating component 3, comprising an insulating layer 301 arranged outside the filling base layer 4, a plurality of groups of thermal expansion grooves 308 opened in the insulating layer 301, and a heat absorption layer 307 arranged outside the insulating layer 301; and further comprises a heat conducting component 2 and a protective component 1, comprising a heat conducting layer 201 arranged outside the insulating layer 301 and a plurality of groups of heat conducting rods 203 arranged inside the heat conducting layer 201, and an outer protective layer 101 arranged outside the insulating layer 301 and a plurality of groups of arc-shaped elastic rods 103 arranged inside the outer protective layer 101, wherein the outer protective layer 101 is fixedly mounted on the surface of the heat conducting layer 201;

[0034] Specifically, in the gaps between the multiple groups of core conductors 5, inorganic fillers are used as the filling base layer 4, which has good high temperature resistance and can help slow down heat accumulation, and has a certain heat dissipation effect. At the same time, the insulating layer 301 can be made of silicon nitride material, which has good electrical insulation performance and mechanical strength, and can withstand high temperatures and resist aging, and is suitable for use in high temperature environments. When the core conductor 5 is hot, the outer insulating layer 301 will begin to expand. By opening the thermal expansion groove 308 on the insulating layer 301, when the heat of the cable is too high, the expansion of each part of the cable inside can be relatively independent, thereby reducing stress accumulation during thermal expansion, effectively dispersing the heat of the local overheating area, and reducing heat accumulation in the cable. When expanding, the thermal expansion groove 308 of the insulating layer 301 will be located close to the heat absorption layer 307, so that the heat on the insulating layer 301 can be quickly absorbed. The heat absorption layer 307 can be made of graphite composite materials, which can effectively absorb and dissipate heat in the cable, especially in high-power transmission occasions, which helps to delay cable overheating;

[0035] Specifically, the function of the thermal expansion groove 308 is to provide a physical space so that the internal insulation layer 301 can have a certain degree of freedom when expanding due to the heat of the internal core conductor 5 of the cable, so as to avoid excessive local internal stress caused by the expansion of the insulation layer 301 being restricted after being heated, thereby reducing the stress accumulation during thermal expansion. When the temperature changes, the existence of the thermal expansion groove 308 can provide a certain space for the expanded insulation layer 301, the internal core conductor 5 and the filling base layer 4, so as to prevent the insulation layer 301 and other related internal components and accessories from excessive expansion or deformation;

[0036] Furthermore, after the heat absorption layer 307 absorbs the heat on the insulating layer 301, the heat can be conducted outward by the multiple groups of heat-conducting rods 203 inside the heat-conducting layer 201, thereby further alleviating the accumulation of heat inside the cable. At the same time, by using the multiple groups of arc-shaped elastic rods 103 arranged inside the outer protective layer 101, when the outer protective layer 101 is subjected to external pressure or impact, the convex side positions of the multiple groups of arc-shaped elastic rods 103 are connected to the inner cavity side wall of the annular groove 102, so that the arc-shaped elastic rods 103 can be deformed by force. During the deformation process of the arc-shaped elastic rods 103, the external pressure and impact force can be absorbed, thereby providing buffer protection for the heat-conducting component 2 and the insulating component 3 arranged inside;

[0037] Specifically, the insulating component 3 also includes a plurality of fan-shaped through grooves 302 opened inside, and the plurality of fan-shaped through grooves 302 and the plurality of thermal expansion grooves 308 are mutually connected, and the surface of the insulating layer 301 is also fixedly connected to a plurality of positioning strips 309, and the surface of the insulating layer 301 is also provided with annular elastic pads 303 corresponding to the plurality of thermal expansion grooves 308, and the surfaces of the plurality of annular elastic pads 303 are all provided with positioning grooves 306, and the inner cavity side walls of the plurality of positioning grooves 306 are all sleeved on the surface of the positioning strip 309, and the two ends of the plurality of annular elastic pads 303 are fixed by tensioning connecting strips 304, and the inner cavity side walls of the plurality of annular elastic pads 303 are all provided with fixing grooves 3010, and the plurality of fixed The inner cavity side walls of the fixed groove 3010 are fixedly connected with the heat absorption layer 307, the surfaces of the multiple groups of annular elastic pads 303 are provided with multiple groups of through holes 305, and the multiple groups of through holes 305 are connected with the fixed groove 3010, the heat conduction component 2 also includes multiple groups of heat conduction grooves 202 provided with the inner cavity side walls of the heat conduction layer 201, the inner cavity side walls of the multiple groups of heat conduction grooves 202 are also clamped on the surface of the annular elastic pad 303, and the inner cavity side walls of the multiple groups of heat conduction grooves 202 are fixedly connected to one end of the heat conduction rod 203, the other ends of the multiple groups of heat conduction rods 203 are plugged into the through holes 305, and the ends of the multiple groups of heat conduction rods 203 plugged into the through holes 305 are fixedly connected to the surface of the heat absorption layer 307;

[0038] Specifically, the function of the thermal expansion groove 308 is to provide a space for the cable material to expand freely, thereby reducing the pressure on the outer structure of the cable caused by thermal expansion. By interconnecting the multiple groups of fan-shaped through grooves 302 and the multiple groups of thermal expansion grooves 308 opened in the insulating layer 301, the heat inside the cable can be more effectively dispersed and conducted, thereby reducing local heat accumulation, reducing the risk of cable overheating, ensuring that the cable maintains a relatively stable temperature during operation, extending its service life and improving safety;

[0039] Furthermore, by using the multiple groups of positioning strips 309 on the insulating layer 301 and the positioning grooves 306 provided on the multiple groups of annular elastic pads 303, the annular elastic pads 303 can be accurately installed at the positions corresponding to the thermal expansion grooves 308, and the annular elastic pads 303 can be fixed by using the tensioning connecting strips 304. When the cable is overheated, causing the insulating layer 301 to expand, the annular elastic pads 303 will expand accordingly and maintain contact with the insulating layer 301 due to their elastic properties. By using the tensioning connecting strips 304, it can be avoided that the annular elastic pads 303 may lose effective support for the insulating layer 301 due to excessive expansion, and The insulating layer 301 is damaged or falls off, and the tensioning connecting strip 304 can maintain the shape and position of the annular elastic pad 303 when the annular elastic pad 303 is extended, thereby ensuring that the annular elastic pad 303 always closely matches the insulating layer 301 to avoid loosening or deformation, and maintain the electrical insulation performance of the cable. The tensioning connecting strip 304 can effectively control the shape change of the annular elastic pad 303 when the cable insulating layer 301 expands through extension and tensioning, maintain the stability of the cable structure, prevent damage to the insulating layer 301, enhance heat dissipation performance, and improve the safety of the cable and the reliability of long-term operation;

[0040] Furthermore, the fixing groove 3010 opened by the annular elastic pad 303 can be used to assemble the heat absorption layer 307, so that the heat absorption layer 307 can just correspond to the position of the thermal expansion groove 308 to absorb heat, and through the multiple groups of through holes 305 opened on the annular elastic pad 303 and the multiple groups of heat-conducting rods 203 installed in the heat-conducting groove 202, the heat absorbed by the heat absorption layer 307 can be conducted to the heat-conducting layer 201, further reducing the accumulation of heat inside the cable, and the heat-conducting layer 201 can be made of carbon fiber composite material with high thermal conductivity, which can quickly transfer the heat absorbed by the heat absorption layer 307 to the outer protective layer 101 of the cable, and the outer protective layer 101 is made of composite high-temperature silicone rubber material, which can conduct the heat transferred by the heat-conducting layer 201 to the outside of the cable, thereby avoiding heat accumulation inside the cable, and while transferring heat, it can also enhance the tensile strength of the cable and the protection of the insulating layer 301 and internal components, reducing the deformation of the cable under heat load;

[0041] Specifically, the protection component also includes a plurality of annular grooves 102 formed on the inner cavity side wall of the outer protection layer 101, and the plurality of annular grooves 102 are distributed correspondingly to the plurality of annular elastic pads 303, both ends of the plurality of arc-shaped elastic rods 103 are fixedly connected to the inner cavity side wall of the plurality of annular grooves 102, and the convex sides of the plurality of arc-shaped elastic rods 103 are also fixedly connected to the inner cavity side wall of the plurality of annular grooves 102;

[0042] Specifically, by opening a plurality of annular grooves 102 inside the outer protective layer 101, the convex side positions of the plurality of arc-shaped elastic rods 103 are connected to the inner cavity side walls of the annular grooves 102, so that the arc-shaped elastic rods 103 can be deformed by force. During the deformation process of the arc-shaped elastic rods 103, the external pressure and impact force can be absorbed, thereby providing buffer protection for the heat-conducting component 2 and the insulating component 3 provided inside;

[0043] Specifically, some cables coated with conventional materials, such as PVC cables, generally have a temperature resistance range of 70°C-105°C. Their performance will be limited at high temperatures. Excessive temperatures may cause the material to soften and age, and their thermal conductivity is poor. PVC itself has low thermal conductivity, usually in the range of 0.2-0.5W / m·K. Silicon nitride has extremely high high temperature resistance. PE cables generally have a temperature resistance range of 75°C-85°C and are suitable for general industrial environments. They have poor thermal conductivity. The thermal conductivity of PE is similar to that of PVC, usually also in the range of 0.3-0.5W / m·K. PTFE cables have excellent high temperature resistance, with a temperature resistance range of -200°C to 260°C, and are suitable for extreme temperature environments. However, their thermal conductivity is relatively low, about 0.25-0.35W / m·K. PTFE has low thermal conductivity and is mainly used in special occasions that require heat resistance and corrosion resistance.

[0044] Furthermore, compared with the present technical solution, the silicon nitride material is used, which can work stably for a long time in an environment below 1400°C and still maintain strong mechanical properties at high temperatures. The thermal conductivity of silicon nitride is relatively high, about 30-40W / m·K. As a filling base layer 4, it can effectively transfer the heat inside the cable to the outside, reducing the risk of overheating. The graphite composite material has very high heat resistance and can withstand temperatures up to 3000°C in an oxygen-free environment. In an aerobic environment, the heat resistance of graphite can also be maintained at around 1000°C-1200°C, and the thermal conductivity is very high, usually between 150-500W / m·K. Therefore, when used as a heat absorption layer 307, it can handle high-temperature conduction well. As for the carbon fiber composite material used as the heat conductive layer 201, the carbon fiber itself has strong high temperature resistance and can usually withstand 2000°C. Temperatures above 300°C, especially carbon fiber composite materials, still maintain good structural stability at high temperatures. The thermal conductivity of carbon fiber varies according to its structure and the type of composite material, usually between 100-200W / m·K, so it can effectively conduct heat. Finally, the composite high-temperature silicone rubber material used as the outer protective layer 101 has extremely high heat resistance, can work stably in an environment below 300°C, and has good electrical insulation performance and wear resistance. The thermal conductivity can be further improved by reinforcing the composite material, thereby effectively conducting heat.

[0045] Working principle of the present invention: In the gaps between multiple groups of core conductors 5, inorganic fillers are used as filling base layers 4, which have good high temperature resistance and can help slow down heat accumulation, and have a certain heat dissipation effect. At the same time, the insulating layer 301 can be made of silicon nitride material, which has good electrical insulation performance and mechanical strength, and is resistant to high temperatures and aging, and is suitable for use in high temperature environments. When the heat of the core conductor 5 is high, the external insulating layer 301 will begin to expand. By opening a thermal expansion groove 308 on the insulating layer 301, when the heat of the cable is too high, the expansion of various parts inside the cable can be relatively independent, thereby reducing stress accumulation during thermal expansion, effectively dissipating the heat in the local overheating area, and reducing heat accumulation in the cable. The function of the thermal expansion groove 308 is to provide a space for the cable material to expand freely, reduce the pressure on the outer structure of the cable caused by thermal expansion, and the heat inside the cable can be more effectively dispersed and conducted by the multiple sets of fan-shaped through grooves 302 opened in the insulating layer 301 and the multiple sets of thermal expansion grooves 308 interpenetrating with each other, thereby reducing local heat accumulation and reducing the risk of cable overheating, ensuring that the cable maintains a relatively stable temperature during operation, extending its service life and improving safety, and by the multiple sets of fan-shaped through grooves 302 opened in the insulating layer 301 and the multiple sets of thermal expansion grooves 308 interpenetrating with each other, the heat inside the cable can be more effectively dispersed and conducted, thereby further reducing local heat accumulation and reducing the risk of cable overheating, and when expanding, the insulation The thermal expansion groove 308 of the layer 301 is located close to the heat absorption layer 307, so that the heat on the insulating layer 301 can be quickly absorbed. The heat absorption layer 307 can be made of graphite composite materials, which can effectively absorb and dissipate heat in the cable, especially in high-power transmission situations, which helps to delay cable overheating. The multiple groups of positioning strips 309 on the insulating layer 301 and the positioning grooves 306 opened on the multiple groups of annular elastic pads 303 can be used to accurately install the annular elastic pads 303 at the positions corresponding to the thermal expansion grooves 308. At the same time, the annular elastic pads 303 can be fixed by the tensioning connecting strips 304. When the cable is overheated, causing the insulating layer 301 to expand, the annular elastic pads 303 will expand accordingly and maintain contact with the insulating layer 301 due to their elastic characteristics. The tensioning connecting strip 304 can prevent the annular elastic pad 303 from losing effective support for the insulating layer 301 due to excessive expansion, and cause the insulating layer 301 to be damaged or fall off. The tensioning connecting strip 304 can maintain the shape and position of the annular elastic pad 303 when the annular elastic pad 303 is extended, thereby ensuring that the annular elastic pad 303 always fits the insulating layer 301 tightly to avoid loosening or deformation, and maintain the electrical insulation performance of the cable. After the heat absorption layer 307 absorbs the heat on the insulating layer 301, the heat absorbed by the heat absorption layer 307 can be conducted to the heat conduction layer 201 through the multiple groups of through holes 305 opened on the annular elastic pad 303 and the multiple groups of heat conducting rods 203 installed in the heat conducting groove 202.To further reduce the accumulation of heat inside the cable, the heat-conducting layer 201 can be made of carbon fiber composite material with high thermal conductivity, which can quickly transfer the heat absorbed by the heat-absorbing layer 307 to the outer protective layer 101 of the cable, and the outer protective layer 101 is made of composite high-temperature silicone rubber material, which can conduct the heat transferred by the heat-conducting layer 201 to the outside of the cable, thereby avoiding heat accumulation inside the cable. While transferring heat, it can also enhance the tensile strength of the cable and protect the insulating layer 301 and internal components, reduce the deformation of the cable under heat load, and open multiple groups of annular grooves 102 and multiple groups of arc-shaped grooves in the inner part of the outer protective layer 101. Because the convex side of the elastic rod 103 is connected to the inner cavity side wall of the annular groove 102, the arc-shaped elastic rod 103 can be deformed by force. During the deformation of the arc-shaped elastic rod 103, the external pressure and impact force can be absorbed, thereby providing buffer protection for the internal heat-conducting component 2 and the insulating component 3, etc., to avoid mechanical damage to the internal components of the cable. In addition, the outer protective layer 101 and the internal carbon fiber heat-conducting layer 201 can improve the protection strength of the outer layer of the cable, thereby reducing the risk of being gnawed by birds during the cable installation process, causing the insulation layer 301 of the cable to be exposed and causing electrical accidents.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional overhead insulated cable, characterized in that: include: A plurality of groups of core conductors (5) and a filling base layer (4) arranged on the surface of the plurality of groups of core conductors (5); and an insulating component (3), comprising an insulating layer (301) disposed outside the filling base layer (4), a plurality of thermal expansion grooves (308) provided in the insulating layer (301), and a heat absorption layer (307) disposed outside the insulating layer (301); It also includes a heat-conducting component (2) and a protective component (1), comprising a heat-conducting layer (201) arranged outside the insulating layer (301) and a plurality of groups of heat-conducting rods (203) arranged inside the heat-conducting layer (201), and an outer protective layer (101) arranged outside the insulating layer (301) and a plurality of groups of arc-shaped elastic rods (103) arranged inside the outer protective layer (101); The outer protective layer (101) is fixedly mounted on the surface of the heat conducting layer (201); The insulating component (3) further comprises a plurality of sets of fan-shaped through grooves (302) opened therein, and the plurality of sets of fan-shaped through grooves (302) and the plurality of sets of thermal expansion grooves (308) are interconnected; A plurality of groups of positioning strips (309) are also fixedly connected to the surface of the insulating layer (301); The surface of the insulating layer (301) is further provided with annular elastic pads (303) corresponding to the multiple groups of thermal expansion grooves (308); the surfaces of the multiple groups of annular elastic pads (303) are all provided with positioning grooves (306); and the inner cavity side walls of the multiple groups of positioning grooves (306) are all sleeved on the surface of the positioning strip (309); The two ends of the multiple groups of annular elastic pads (303) are fixed by tensioning connecting strips (304), and the inner cavity side walls of the multiple groups of annular elastic pads (303) are all provided with fixing grooves (3010), and the inner cavity side walls of the multiple groups of fixing grooves (3010) are all fixedly connected with heat absorption layers (307).

2. A multifunctional overhead insulated cable according to claim 1, characterized in that: The surfaces of the multiple groups of annular elastic pads (303) are each provided with multiple groups of through holes (305), and the multiple groups of through holes (305) are each connected to the fixing groove (3010).

3. A multifunctional overhead insulated cable according to claim 2, characterized in that: The heat-conducting component (2) further comprises a plurality of heat-conducting grooves (202) formed on the inner cavity side wall of the heat-conducting layer (201); the inner cavity side walls of the plurality of heat-conducting grooves (202) are all clamped on the surface of the annular elastic pad (303); and the inner cavity side walls of the plurality of heat-conducting grooves (202) are all fixedly connected to one end of the heat-conducting rod (203).

4. A multifunctional overhead insulated cable according to claim 3, characterized in that: The other ends of the multiple sets of heat-conducting rods (203) are all inserted into the through holes (305), and the ends of the multiple sets of heat-conducting rods (203) inserted into the through holes (305) are all fixedly connected to the surface of the heat-absorbing layer (307).

5. A multifunctional overhead insulated cable according to claim 4, characterized in that: The protection component also includes a plurality of groups of annular grooves (102) formed on the inner cavity side wall of the outer protection layer (101), and the plurality of groups of annular grooves (102) and the plurality of groups of annular elastic pads (303) are distributed in a corresponding manner; Both ends of the multiple sets of arc-shaped elastic rods (103) are fixedly connected to the inner cavity side walls of the multiple sets of annular grooves (102), and the convex sides of the multiple sets of arc-shaped elastic rods (103) are also fixedly connected to the inner cavity side walls of the multiple sets of annular grooves (102).

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