Energy-saving overhead insulated cable

Abstract

This invention discloses an energy-saving overhead insulated cable, relating to the field of power cable technology, comprising: an outer sheath with a reflective and cooling coating on its exterior; and a power cable assembly disposed inside the outer sheath, the power cable assembly including a first conductor, with a second conductor twisted and connected inside the first conductor to increase the outer diameter of the conductor while maintaining the same conductive cross-sectional area. In this energy-saving overhead insulated cable, the reflective coating on the outer sheath reflects sunlight and reduces heat absorption by the cable. Both the first and second conductors are made of high-conductivity aluminum alloy, increasing the outer diameter while maintaining the same conductive cross-sectional area. Combined with an internal ventilation chamber and an external ventilation structure for continuous heat dissipation, this effectively suppresses the phenomenon of conductor resistance increasing with temperature. Simultaneously, the multi-layer shielding insulation structure prevents leakage, comprehensively reducing power transmission loss.

Description

Technical Field

[0001] This invention relates to the field of power cable technology, specifically to an energy-saving overhead insulated cable. Background Technology

[0002] Power cables are complete cable products laid on the main lines of power systems for transmitting and distributing high-power electrical energy. They consist of conductive core wires, insulation layers, shielding layers, sheaths, and other multi-layered structures, and are suitable for low-voltage, medium-voltage, high-voltage, and ultra-high-voltage power transmission and distribution scenarios.

[0003] Currently, most conventional overhead cables on the market use pure copper and ordinary aluminum as conductors. Under the premise of the same conductive cross-sectional area, the outer diameter of such conductors is small, resulting in a serious lack of heat dissipation surface area. The Joule heat generated during cable operation accumulates in the conductor core and is difficult to conduct outward, forming a heat accumulation effect. Since conductor resistance has a positive temperature characteristic, the increase in cable temperature will directly cause the conductor resistance to continue to increase. The two form a vicious cycle. When applied to long-distance power transmission scenarios, the line voltage drop and active power loss will be significantly aggravated, resulting in high power transmission loss.

[0004] Therefore, we propose an energy-saving overhead insulated cable to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving overhead insulated cable to solve the problem mentioned in the background art. The conductors of most conventional overhead cables on the market are made of pure copper and ordinary aluminum. Under the premise of the same conductive cross-sectional area, the Joule heat generated by such cables with small conductor outer diameters accumulates in the conductor core during operation, forming a heat sealing and accumulation effect. Since the conductor resistance has a positive temperature characteristic, the increase in cable temperature will directly cause the conductor resistance to continue to increase, resulting in high power transmission loss.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving overhead insulated cable, comprising: The outer sheath has a reflective and cooling coating on its exterior. A power cable assembly is disposed inside an outer sheath. The power cable assembly includes a first conductor, and a second conductor is twisted and connected inside the first conductor to increase the outer diameter of the conductor while maintaining the same conductive cross-sectional area. Multiple cavities are formed between the second conductor and the first conductor, evenly arranged along the circumference. Each of the multiple cavities is provided with a first arc tube. Support tubes are fixedly connected to the outer surfaces of the multiple first arc tubes near both ends. Each pair of adjacent support tubes forms a group. A second arc tube is fixedly connected between the two ends of the multiple groups of support tubes to support and limit the movement between the first conductor and the second conductor. A conductor shielding tube is fixedly sleeved on the outer surface of the first conductor, and an insulating tube is fixedly sleeved on the outer surface of the conductor shielding tube. The heat dissipation and shock absorption components are installed on the outside of the outer sheath and are used for heat dissipation and shock absorption of the power cable assembly.

[0007] Preferably, both the first conductor and the second conductor are made of highly conductive aluminum alloy. An insulating shielding tube is fixedly sleeved on the outer surface of the insulating tube. Multiple circumferentially evenly arranged sliding grooves are opened on the outer surface of the insulating shielding tube, and sliders are fixedly connected to the inner walls of the multiple sliding grooves.

[0008] Preferably, limit blocks are fixedly connected to the inner walls of the multiple sliding grooves near the two side edges, and sliding balls are slidably connected to the outer surfaces of the multiple sliding blocks. Each pair of adjacent sliding balls forms a group, and rubber rings are fixedly connected between the outer surfaces of the multiple sliding balls.

[0009] Preferably, a copper mesh is fixedly sleeved on the outer surface of the insulating shielding tube, and multiple rubber rings are located between the insulating shielding tube and the copper mesh. The outer surface of the copper mesh is in contact with the inner wall of the outer sheath. The multiple first arc tubes are divided into multiple groups, and connecting tubes are fixedly connected to the outer surfaces of the multiple groups of first arc tubes near both ends.

[0010] Preferably, the heat dissipation and shock absorption assembly includes multiple first ring plates, each with multiple evenly arranged ventilation holes on its outer surface to reduce its weight. Each pair of adjacent first ring plates forms a group, and a connecting shaft is movably embedded between the inner walls of the multiple groups of first ring plates near one edge.

[0011] Preferably, two limiting rings are fixedly sleeved on the outer surface of each of the plurality of connecting shafts to restrict the movement of the first ring plate, and fixed shafts are fixedly sleeved on both ends of the plurality of connecting shafts, and a groove is formed at one end of each of the plurality of fixed shafts.

[0012] Preferably, a connecting plate is fixedly connected to the outer surface of each of the first ring plates near the other edge, and a circular groove is formed on the inner wall of each of the connecting plates near one edge.

[0013] Preferably, the inner walls of the plurality of circular grooves are slidably connected to connecting columns, one end of each of the plurality of connecting columns is fixedly connected to an anti-vibration hammer, and the outer surfaces of the plurality of first ring plates are in contact with the outer surface of the outer sheath.

[0014] Preferably, the plurality of connecting posts are divided into two groups. One group of connecting posts has a threaded cylinder fixedly sleeved on the outer surface near the other end. The other group of connecting posts has a threaded ring slidably connected on the outer surface. The other group of connecting posts has a second ring plate fixedly sleeved on the outer surface near the other end to restrict the movement of the threaded ring.

[0015] Preferably, the outer surface of the outer sheath is fixedly connected with a plurality of connecting blocks, the outer surfaces of the plurality of connecting blocks respectively conform to the inner walls of a plurality of grooves, and the outer surfaces of the plurality of threaded cylinders are respectively threadedly connected to the inner walls of a plurality of threaded rings.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The reflective coating on the outer sheath of this device can reflect sunlight and reduce heat absorption by the cable; both the first and second conductors are made of high-conductivity aluminum alloy, and the outer diameter is increased under the premise of unchanged conductive cross-sectional area. Combined with the internal ventilation chamber and external ventilation structure for continuous heat dissipation, it effectively suppresses the phenomenon that the conductor resistance increases with the temperature. At the same time, the multi-layer shielding insulation structure avoids leakage and reduces power transmission loss in all aspects.

[0017] 2. In this device, the first conductor and the second conductor are connected by an arc tube and a support tube to form a ventilation cavity. The outer first ring plate has ventilation holes to form a convection heat dissipation channel. In addition, a copper mesh is used to assist in heat conduction. The internal and external components work together to accelerate heat dissipation, which can keep the cable temperature within a reasonable range for a long time and ensure the operational stability of this device.

[0018] 3. The internal slider, ball, and rubber ring of this device form a flexible buffer structure to absorb the deformation stress of the cable; the external heat dissipation and shock absorption components can counteract the swaying of the line caused by strong winds. With the limit and threaded locking structure to fix each component, it is suitable for complex outdoor overhead working conditions and improves the operational safety of this device. Attached Figure Description

[0019] Figure 1 This is a front perspective view of an energy-saving overhead insulated cable according to the present invention; Figure 2 This is a perspective view of the outer sheath portion of an energy-saving overhead insulated cable according to the present invention; Figure 3 This is a perspective view of the second conductor portion of an energy-saving overhead insulated cable according to the present invention; Figure 4 This is a perspective view of the insulating shield tube portion of an energy-saving overhead insulated cable according to the present invention; Figure 5 This is a perspective view of a heat dissipation and shock absorption component of an energy-saving overhead insulated cable according to the present invention. Figure 6 This is a perspective view of the copper mesh portion of an energy-saving overhead insulated cable according to the present invention; Figure 7 This is a three-dimensional cross-sectional view of the second ring plate portion of an energy-saving overhead insulated cable according to the present invention. Figure 8 This is a perspective view of the first ring plate portion of an energy-saving overhead insulated cable according to the present invention; Figure 9 for Figure 8 Enlarged 3D view at point A.

[0020] In the picture: 1. Outer sheath; 2. Power cable assembly; 201. First conductor; 202. Second conductor; 203. First arc tube; 204. Support tube; 205. Second arc tube; 206. Conductor shielding tube; 207. Insulating tube; 208. Insulating shielding tube; 209. Slide groove; 210. Slider; 211. Limiting block; 212. Sliding ball; 213. Rubber ring; 214. Copper mesh; 215. Connecting tube; 3. Heat dissipation and shock absorption assembly; 301. First ring plate; 302. Ventilation hole; 303. Connecting shaft; 304. Limiting ring; 305. Fixed shaft; 306. Groove; 307. Connecting plate; 308. Circular groove; 309. Connecting column; 310. Shock absorber; 311. Threaded cylinder; 312. Second ring plate; 313. Threaded ring; 314. Connecting block. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-9This invention provides a technical solution: an energy-saving overhead insulated cable, comprising: an outer sheath 1, the outer sheath 1 having a reflective and cooling coating on its exterior; and a power cable assembly 2, disposed inside the outer sheath 1. The power cable assembly 2 includes a first conductor 201, with a second conductor 202 twisted inside the first conductor 201 to increase the outer diameter of the conductor while maintaining the same conductive cross-sectional area. Multiple circumferentially arranged chambers are formed between the second conductor 202 and the first conductor 201. Each chamber contains a first arc tube 203. Support tubes 204 are fixedly connected to the outer surfaces of the multiple first arc tubes 203 near both ends. Each pair of adjacent support tubes 204 forms a group. Second arc tubes 205 are fixedly connected between the two ends of each group of support tubes 204 to support and limit the movement between the first conductor 201 and the second conductor 202. A conductor shielding tube 206 is fixedly sleeved on the outer surface of a conductor 201, and an insulating tube 207 is fixedly sleeved on the outer surface of the conductor shielding tube 206. A heat dissipation and shock absorption assembly 3 is set outside the outer sheath 1 for heat dissipation and shock absorption of the power cable assembly 2. The first conductor 201 and the second conductor 202 are both made of high-conductivity aluminum alloy. An insulating shielding tube 208 is fixedly sleeved on the outer surface of the insulating tube 207. Multiple circumferentially evenly arranged sliding grooves 209 are opened on the outer surface of the insulating shielding tube 208. A slider 210 is fixedly connected to the inner wall of the multiple sliding grooves 209. Limiting blocks 211 are fixedly connected to the inner wall of the multiple sliding grooves 209 near the two side edges. A sliding ball 212 is slidably connected to the outer surface of the multiple sliders 210. Each pair of adjacent sliding balls 212 is a group. A rubber ring 213 is fixedly connected between the outer surfaces of the multiple sliding balls 212.

[0023] In this embodiment, when the energy-saving overhead insulated cable is laid overhead, the outer sheath 1, which is used to protect the internal structure of the cable, is first installed at the designated point of the overhead line. The reflective cooling coating on the outer surface of the outer sheath 1 continuously reflects sunlight, reducing the overall heat absorption of the cable and reducing the problem of increased resistance and power loss due to high temperature, thus achieving basic cooling and energy saving. After the cable is connected to the circuit and powered on, the first conductor 201 and the internally twisted second conductor 202 work together to complete the conduction operation. Both are made of highly conductive aluminum alloy for current transmission. While keeping the conductive cross-sectional area unchanged, the outer diameter of the conductor is enlarged, effectively reducing the resistance per unit length of the conductor, reducing heat generation and power loss during current transmission, and further achieving energy saving. The circumferentially distributed chambers between the two, together with the first arc pipe 203 used for internal support and air guidance in the chamber, the support pipe 204 used to connect and fix the first arc pipe 203, and the adjacent support pipes 204, are all connected to each other. The second arc tube 205, used for overall limiting and reinforcement, provides all-round support and positioning for the first conductor 201 and the second conductor 202. At the same time, the chamber and the tubular structure form a ventilation channel to accelerate heat dissipation in the conductor area, avoid high-temperature operation of the cable and increase line loss, and continuously maintain an energy-saving operating state. The conductor shielding tube 206 for electric field shielding, the insulating tube 207 for electrical insulation isolation, and the insulating shielding tube 208 for secondary shielding protection on the outside of the first conductor 201 work together to ensure the electrical operation safety of the cable and eliminate energy waste caused by leakage. The reflective coating of the outer sheath 1 in this device can reflect sunlight and reduce heat absorption of the cable. Both the first conductor 201 and the second conductor 202 are made of high-conductivity aluminum alloy. Under the premise of keeping the conductive cross-sectional area unchanged, the outer diameter is increased. With the internal ventilation chamber and the external ventilation structure, heat dissipation is continuously carried out, effectively suppressing the phenomenon that the conductor resistance increases with the temperature. At the same time, the multi-layer shielding insulation structure avoids leakage and reduces power transmission loss in all aspects.

[0024] like Figure 1-9 As shown, a copper mesh 214 is fixedly sleeved on the outer surface of the insulating shielding tube 208. Multiple rubber rings 213 are located between the insulating shielding tube 208 and the copper mesh 214. The outer surface of the copper mesh 214 is in contact with the inner wall of the outer sheath 1. Multiple first arc tubes 203 are evenly divided into multiple groups. Connecting pipes 215 are fixedly connected to the outer surfaces of multiple groups of first arc tubes 203 near both ends. The heat dissipation and shock absorption component 3 includes multiple first ring plates 301. Multiple evenly arranged ventilation holes 302 are opened on the outer surface of multiple first ring plates 301 to reduce their weight. Each pair of adjacent first ring plates 301 is a group. Connecting shafts 303 are movably embedded in the inner walls of multiple groups of first ring plates 301 near one edge.

[0025] In this embodiment, when the energy-saving overhead insulated cable is in operation, the first conductor 201 and the internally stranded second conductor 202 work together to complete the conduction operation. Both are made of highly conductive aluminum alloy for current transmission. While maintaining the same conductive cross-sectional area, the outer diameter of the conductor is enlarged, effectively reducing the resistance per unit length of the conductor, reducing heat generation and energy loss during current transmission, and further achieving energy-saving effects. The circumferentially distributed chambers between the two conductors, together with the first arc pipe 203 used for internal support and air guidance, the support pipe 204 used for connecting and fixing the first arc pipe 203, and the second arc pipe 205 used for overall limiting and reinforcement between adjacent support pipes 204, provide all-round support and positioning for the first conductor 201 and the second conductor 202. At the same time, the chambers and The tubular structure forms a ventilation channel, accelerating heat dissipation in the conductor area, preventing high-temperature operation of the cable and increasing line loss, and continuously maintaining an energy-saving operating state. The conductor shielding tube 206 for electric field shielding, the insulating tube 207 for electrical insulation isolation, and the insulating shielding tube 208 for secondary shielding protection work together to ensure the electrical safety of the cable and prevent energy waste caused by leakage. A sliding block 210 is installed inside a groove 209 on the outer circumference of the insulating shielding tube 208, providing a track for the sliding component. Limiting blocks 211 on both sides of the groove 209 limit the sliding range of the sliding block 210 to prevent it from dislodging. A movable ball 212 connected to the sliding block 210, along with adjacent balls 212, serves to buffer and absorb stress. Rubber rings 213 form a flexible buffer structure. A copper mesh 214, used to reinforce the structure and aid heat conduction, is fitted onto the inner wall of the outer sheath 1, further securing the internal components. Connecting pipes 215, used to reinforce the arc tube assemblies between each group of first arc tubes 203, enhance the overall stability of the internal frame. The heat dissipation and shock absorption assembly 3, used to enhance heat dissipation and resist wind vibration on the outside of the cable, functions simultaneously. The first ring plate 301, which carries all external accessories, is tightly fitted to the surface of the outer sheath 1. Ventilation holes 302 on the first ring plate 301, used for air circulation and weight reduction, accelerate air convection, continuously removing heat from the cable surface, keeping the cable temperature within a reasonable range, suppressing resistance rise, and reducing transmission loss. Adjacent first ring plates 301 are connected by... The connecting shaft 303 used for hinged linkage ring plate realizes movable connection. The limiting ring 304 on the outside of the connecting shaft 303 is used to limit the left and right displacement of the first ring plate 301 to prevent the component from shifting. The fixing shaft 305 and end groove 306 at both ends of the connecting shaft 303 are fitted and matched with the connecting block 314 on the outer wall of the outer sheath 1 for docking and fixing the heat dissipation and shock absorption component 3, thus completing the overall installation and fixing of the first ring plate 301. In this device, the first conductor 201 and the second conductor 202 are surrounded by an arc tube and a support tube 204 to form a ventilation cavity. The outer first ring plate 301 has ventilation holes 302 to form a convection heat dissipation channel, and is further supplemented by a copper mesh 214 to assist in heat conduction. The internal and external working together accelerate the heat dissipation, which can keep the cable temperature within a reasonable range for a long time and ensure the operational stability of this device.

[0026] like Figure 1-9 As shown, two limiting rings 304 are fixedly sleeved on the outer surface of multiple connecting shafts 303 to restrict the movement of the first ring plate 301. Fixed shafts 305 are fixedly sleeved at both ends of the multiple connecting shafts 303. A groove 306 is formed at one end of each of the multiple fixed shafts 305. Connecting plates 307 are fixedly connected to the outer surface of the multiple first ring plates 301 near one edge. Circular grooves 308 are formed on the inner walls of the multiple connecting plates 307 near one edge. Connecting posts 309 are slidably connected to the inner walls of the multiple circular grooves 308. A vibration damper 310 is fixedly connected to one end of each of the multiple connecting posts 309. The outer surface of the multiple first ring plates 301 is... The outer surfaces of the outer sheath 1 are in contact with each other. Multiple connecting posts 309 are divided into two groups. One group of connecting posts 309 has a threaded cylinder 311 fixedly fitted on the outer surface near the other end. The outer surfaces of the other group of connecting posts 309 are slidably connected with threaded rings 313. The outer surfaces of the other group of connecting posts 309 are fixedly fitted with second ring plates 312 near the other end to restrict the movement of threaded rings 313. Multiple connecting blocks 314 are fixedly connected to the outer surface of the outer sheath 1. The outer surfaces of the multiple connecting blocks 314 are respectively in contact with the inner walls of multiple grooves 306. The outer surfaces of the multiple threaded cylinders 311 are respectively threadedly connected to the inner walls of multiple threaded rings 313.

[0027] In this embodiment, when the energy-saving overhead insulated cable is in operation, a slider 210 is installed inside a groove 209 on the outer circumference of the insulating shield tube 208, which provides a track for the sliding component. Limiting blocks 211 on both sides of the groove 209 limit the sliding range of the slider 210 to prevent it from falling out. A flexible buffer structure is formed by a sliding ball 212 movably connected to the slider 210 and a rubber ring 213 between adjacent sliding balls 212 for buffering, shock absorption, and stress absorption. Connecting pipes 215 between each group of first arc tubes 203 are used to reinforce the arc tube assembly in series to improve the overall stability of the internal frame. The cable exterior has heat dissipation and wind resistance protection. The vibration assembly 3 functions synchronously. The first ring plate 301, which carries all external accessories, fits tightly against the surface of the outer sheath 1. Ventilation holes 302 on the first ring plate 301, designed for airflow and weight reduction, accelerate air convection, continuously removing heat from the cable surface and keeping the cable temperature within a reasonable range. This suppresses resistance rise and reduces transmission loss. Adjacent first ring plates 301 are movably connected via a connecting shaft 303 for hinged linkage. Limiting rings 304 on the outside of the connecting shaft 303 limit the left and right displacement of the first ring plates 301, preventing component misalignment. Fixed shafts 305 and end grooves 306 at both ends of the connecting shaft 303 connect with the outer sheath 1. The outer wall of the first ring plate 301 is fitted and matched with the connecting block 314 for fixing the heat dissipation and shock absorption component 3, thus completing the overall installation and fixing of the first ring plate 301. A circular groove 308 is opened on the connecting plate 307 on the side of the first ring plate 301 to provide sliding space for the connecting post 309. The connecting post 309 for hanging the shock absorption component is inserted in the circular groove 308. The bottom end of the connecting post 309 is fixed with a shock absorber 310 to counteract the cable vibration caused by strong wind. It swings under the action of wind force to balance the amplitude of cable swaying and prevent the cable from becoming loose due to vibration, causing insulation failure and leakage. A threaded cylinder 311 is fixed on the outside of one set of connecting posts 309, and the other set of connecting posts 309 is externally slidably assembled. The threaded ring 313 and the second ring plate 312 on the connecting column 309 are used to block and limit the threaded ring 313 to prevent it from falling off. By rotating the threaded ring 313, it is locked with the threaded cylinder 311, connecting all the connecting columns 309 into a whole, ensuring that the anti-vibration structure is firmly connected, allowing the cable to operate stably and with low loss for a long time. The internal slider 210, slider 212 and rubber ring 213 form a flexible buffer structure to absorb the deformation stress of the cable. The external heat dissipation and anti-vibration components 3 can offset the line sway caused by strong winds. With the limit and threaded locking structure to fix each component, it is suitable for complex outdoor overhead working conditions and improves the operational safety of the device.

[0028] The usage and working principle of this device: When this energy-saving overhead insulated cable is laid overhead, the outer sheath 1, which is used to protect the internal structure of the cable, is first installed at the designated point of the overhead line. The reflective cooling coating on the outer surface of the outer sheath 1 continuously reflects sunlight, reducing the overall heat absorption of the cable and reducing the problem of increased resistance and power loss due to high temperature, thus achieving basic cooling and energy saving. After the cable is connected to the circuit and powered on, the first conductor 201 and the internally twisted second conductor 202 work together to complete the conduction operation. Both are made of highly conductive aluminum alloy for current transmission. While maintaining the same conductive cross-sectional area, the outer diameter of the conductor is enlarged, effectively reducing the resistance per unit length of the conductor, reducing heat generation and power loss during current transmission, and further achieving energy saving. The circumferentially distributed chambers between the two conductors, together with the first arc pipe 203 used for internal support and air guidance, the support pipe 204 used to connect and fix the first arc pipe 203, and the second arc pipe 205 used for overall limiting and reinforcement between adjacent support pipes 204, provide all-round support for the first conductor 201 and the second conductor 202. The support and positioning, along with the ventilation channel formed by the chamber and tubular structure, accelerate heat dissipation in the conductor area, prevent high-temperature operation of the cable from increasing line loss, and continuously maintain energy-saving operation; the conductor shielding tube 206 for electric field shielding, the insulating tube 207 for electrical insulation isolation, and the insulating shielding tube 208 for secondary shielding protection work together to ensure the electrical safety of the cable and eliminate energy waste caused by leakage. The outer circumference of the insulating shielding tube 208 has a groove 209 that provides a moving track for the sliding parts, and a slider 210 is installed inside. The limiting blocks 211 on both sides of the slide groove 209 are used to limit the sliding range of the slider 210 to prevent the slider 210 from falling out. The movable ball 212 on the slider 210, together with the rubber ring 213 between adjacent balls 212 for buffering, shock absorption and stress absorption, forms a flexible buffer structure. The copper mesh 214 on the outside of the insulating shield tube 208 is fitted to the inner wall of the outer sheath 1 to strengthen the structure and assist in heat conduction, further fixing the internal components. The connecting pipe 215 between each group of first arc tubes 203 is used to connect and reinforce the arc tube components to improve the overall stability of the internal frame.The heat dissipation and shock absorption assembly 3 on the outside of the cable, which enhances heat dissipation and resists wind vibration, works simultaneously. The first ring plate 301, which carries all external accessories, fits tightly against the surface of the outer sheath 1. The ventilation holes 302 on the first ring plate 301, which facilitate airflow and reduce weight, accelerate air convection, continuously remove heat from the cable surface, and keep the cable temperature within a reasonable range, suppressing resistance rise and reducing transmission loss. Adjacent first ring plates 301 are movably connected by a connecting shaft 303 for hinged linkage ring plates. The limiting ring 304 on the outside of the connecting shaft 303, which limits the left and right displacement of the first ring plate 301, prevents component displacement. The fixing shafts 305 and end grooves 306 at both ends of the connecting shaft 303 fit and match with the connecting blocks 314 on the outer wall of the outer sheath 1 for docking and fixing the heat dissipation and shock absorption assembly 3, completing the overall installation and fixation of the first ring plate 301. A circular groove 308 is provided on the connecting plate 307 on the side of the first ring plate 301 to provide sliding space for the connecting post 309. The connecting post 309 for mounting the shock-absorbing component is inserted in the circular groove 308. The bottom end of the connecting post 309 is fixed with a shock-absorbing hammer 310 to counteract the cable vibration caused by strong winds. Under the action of wind force, it swings to balance the amplitude of cable swaying and prevent the cable from becoming loose due to vibration, causing leakage due to structural loosening or insulation failure. A threaded cylinder 311 is fixed to the outside of one set of connecting posts 309, and a threaded ring 313 is slidably assembled on the outside of another set of connecting posts 309. A second ring plate 312 on the connecting post 309 is used to block and limit the threaded ring 313 to prevent the threaded ring 313 from falling off. By rotating the threaded ring 313, it is locked with the threaded cylinder 311, connecting all sets of connecting posts 309 into a whole, ensuring a reliable connection of the shock-absorbing structure and allowing the cable to operate stably and with low loss for a long time.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy-saving overhead insulated cable, characterized in that, include: Outer sheath (1), the outer sheath (1) is provided with a reflective and cooling coating on the outside; A power cable assembly (2) is disposed inside an outer sheath (1). The power cable assembly (2) includes a first conductor (201). A second conductor (202) is twisted and connected inside the first conductor (201) to increase the outer diameter of the conductor while keeping the conductive cross-sectional area unchanged. Multiple cavities are formed between the second conductor (202) and the first conductor (201) and are evenly arranged along the circumference. A first arc tube (203) is disposed inside each of the multiple cavities. A support tube (204) is fixedly connected to the outer surface of the multiple first arc tubes (203) near both ends. Each pair of adjacent support tubes (204) forms a group. A second arc tube (205) is fixedly connected between the two ends of the multiple groups of support tubes (204) to support and limit the movement between the first conductor (201) and the second conductor (202). A conductor shielding tube (206) is fixedly sleeved on the outer surface of the first conductor (201). An insulating tube (207) is fixedly sleeved on the outer surface of the conductor shielding tube (206). The heat dissipation and shock absorption component (3) is installed outside the outer sheath (1) for heat dissipation and shock absorption of the power cable assembly (2).

2. The energy-saving overhead insulated cable according to claim 1, characterized in that: The first conductor (201) and the second conductor (202) are both made of high-conductivity aluminum alloy. An insulating shielding tube (208) is fixedly sleeved on the outer surface of the insulating tube (207). Multiple circumferentially evenly arranged sliding grooves (209) are opened on the outer surface of the insulating shielding tube (208). A slider (210) is fixedly connected to the inner wall of each of the multiple sliding grooves (209).

3. The energy saving overhead insulated cable according to claim 2, characterized in that: Limiting blocks (211) are fixedly connected to the inner walls of the multiple sliding grooves (209) near the two side edges. Sliding balls (212) are slidably connected to the outer surfaces of the multiple sliders (210). Each pair of adjacent sliding balls (212) forms a group. Rubber rings (213) are fixedly connected between the outer surfaces of the multiple sliding balls (212).

4. The energy-saving overhead insulated cable according to claim 3, characterized in that: The outer surface of the insulating shield tube (208) is fixedly fitted with a copper mesh (214), and multiple rubber rings (213) are located between the insulating shield tube (208) and the copper mesh (214). The outer surface of the copper mesh (214) is in contact with the inner wall of the outer sheath (1). Multiple first arc tubes (203) are divided into multiple groups, and connecting tubes (215) are fixedly connected to the outer surfaces of multiple groups of first arc tubes (203) near both ends.

5. The energy-saving overhead insulated cable according to claim 4, characterized in that: The heat dissipation and shock absorption component (3) includes multiple first ring plates (301). Multiple evenly arranged ventilation holes (302) are opened on the outer surface of the multiple first ring plates (301) to reduce their weight. Each pair of adjacent first ring plates (301) forms a group. A connecting shaft (303) is movably embedded between the inner walls of the multiple groups of first ring plates (301) near one edge.

6. The energy-saving overhead insulated cable according to claim 5, characterized in that: Two limiting rings (304) are fixedly sleeved on the outer surface of the multiple connecting shafts (303) to restrict the movement of the first ring plate (301). Fixed shafts (305) are fixedly sleeved on both ends of the multiple connecting shafts (303), and a groove (306) is opened on one end of the multiple fixed shafts (305).

7. The energy-saving overhead insulated cable according to claim 6, characterized in that: A connecting plate (307) is fixedly connected to the outer surface of a plurality of first ring plates (301) near the other edge, and a circular groove (308) is formed on the inner wall of a plurality of connecting plates (307) near one edge.

8. The energy saving overhead insulated cable of claim 7, wherein: The inner walls of the multiple circular grooves (308) are slidably connected with connecting columns (309), and one end of each of the multiple connecting columns (309) is fixedly connected with a shock absorber (310). The outer surfaces of the multiple first ring plates (301) are in contact with the outer surface of the outer sheath (1).

9. The energy-saving overhead insulated cable according to claim 8, characterized in that: The multiple connecting posts (309) are divided into two groups. One group of connecting posts (309) has a threaded cylinder (311) fixedly sleeved on the outer surface near the other end. The other group of connecting posts (309) has a threaded ring (313) slidably connected on the outer surface. The other group of connecting posts (309) has a second ring plate (312) fixedly sleeved on the outer surface near the other end to restrict the movement of the threaded ring (313).

10. The energy-saving overhead insulated cable according to claim 9, characterized in that: The outer surface of the outer sheath (1) is fixedly connected with a plurality of connecting blocks (314), the outer surfaces of the plurality of connecting blocks (314) respectively fit against the inner walls of the plurality of grooves (306), and the outer surfaces of the plurality of threaded cylinders (311) are respectively threadedly connected to the inner walls of the plurality of threaded rings (313).

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