Energy storage aluminum alloy low-voltage cable

Abstract

The invention discloses an energy-storage aluminum alloy low-voltage cable, and relates to the technical field of cables, a plurality of pedestals are uniformly mounted in a sheath at equal intervals, a core tube is inserted in the middle of the side end surface of each pedestal, a plurality of reducer tubes are uniformly mounted in the core tube at equal intervals, and guide valves are mounted at the tops of the outer curved surfaces of the reducer tubes in an embedded manner; according to the invention, heat exchange between the inner channel and the outer channel can be realized on the basis of natural heat dissipation, passive heat dissipation and active heat exchange can be effectively combined, energy consumption and heat exchange efficiency are both considered, heat at the intersection of the cable cores can be effectively eliminated, and the heat dissipation efficiency is improved. Internal and external heat exchange is more timely and efficiently realized, more comprehensive heat dissipation of the cable is realized, internal heat cycle exchange can be realized, heat in all positions in the cable is balanced, the cable can perform transmission more stably and efficiently, waste electromagnetic energy can be recovered and converted, and heat exchange work is promoted to be performed more efficiently and smoothly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cables, in particular to an energy storage aluminum alloy low-voltage cable. BACKGROUND

[0002] The application scenario of the energy storage cable is deeply bound with the energy storage system. As the "blood vessels" of the energy storage system, the technical evolution and market expansion of the energy storage cable will deeply support the global energy transformation, become the key link connecting new energy power generation, power grid dispatching and terminal users, and the optimization of the energy storage cable needs to take "material innovation as the core, standard unification as the basis, intelligentization as the means, and large-scale cost reduction as the goal", and finally realize the "high performance, low cost and high reliability" cable system adapting to the high-speed development of the energy storage industry. However, in the current energy storage cable, with the change of load, the heat emitted by the cable core is easy to converge and accumulate at the center of the cable. The cable core intersection is easy to overage due to the untimely heat dissipation, and the heat dissipation is mostly in the form of natural heat dissipation. Not only the heat dissipation efficiency is poor, but also the temperature imbalance is easy to occur in each part of the cable due to the load fluctuation, which is easy to damage due to local overheating. SUMMARY

[0003] The present application provides an energy storage aluminum alloy low-voltage cable, which can effectively solve the problem of the current energy storage cable in the background art. With the change of load, the heat emitted by the cable core is easy to converge and accumulate at the center of the cable. The cable core intersection is easy to overage due to the untimely heat dissipation, and the heat dissipation is mostly in the form of natural heat dissipation. Not only the heat dissipation efficiency is poor, but also the temperature imbalance is easy to occur in each part of the cable due to the load fluctuation, which is easy to damage due to local overheating.

[0004] To achieve the above purpose, the present application provides the following technical scheme: an energy storage aluminum alloy low-voltage cable, comprising a sheath, the sheath is internally provided with a double-pass protection mechanism; The double-pass protection mechanism comprises a pad seat; The sheath is internally provided with a plurality of pad seats at equal intervals, the pad seat side end face middle part is provided with a core pipe, the core pipe is internally provided with a plurality of variable diameter pipes at equal intervals, the variable diameter pipe outer curved surface top is embeddedly provided with a guide valve, the core pipe outer curved surface corresponding variable diameter pipe position is provided with a plurality of notches along the circumferential direction at equal angles, the core pipe two ends are both provided with a guide valve, the two guide valve ends are respectively provided with a head box and a tail box, the head box outer curved surface bottom is provided with a mixed air valve, and the tail box outer curved surface bottom is provided with a guide-out pipe; The outer curved side of the sheath is symmetrically provided with a ring box, the ring box is embedded with a filter screen, the side end surface of the pad seat is provided with a plurality of cable cores at equal angles in the circumferential direction, the outer side of the cable core is sleeved with an inner sheath, the outer wall of the inner sheath is provided with an air bag, the outer side of the air bag is sleeved with a heat-conducting pad, the outer wall of the air bag is uniformly connected with a plurality of through pipes at equal intervals, and the outer wall of the heat-conducting pad is clamped with a hoop sleeve.

[0005] Preferably, the outer wall of the cable core is sleeved with an insulating sleeve, and the outer wall of the insulating sleeve is embedded with a shielding net at the inner side position of the inner sheath. The outer wall of the inner sheath is uniformly provided with a plurality of ring pads at equal intervals, the inner wall of the air bag is provided with a ring sleeve at the position corresponding to the ring pad, the inner wall of the heat-conducting pad is provided with a plurality of ribs at equal angles in the circumferential direction, the outer wall of the air bag is provided with a tooth groove at the position corresponding to the rib, the outer wall of the heat-conducting pad is provided with a convex beam at the top, and the outer wall of the sheath is embedded with a dustproof net at the position corresponding to the guide valve.

[0006] Preferably, the variable-diameter pipe is distributed adjacent to the pad seat, and the space between the two adjacent pad seats is communicated with the variable-diameter pipe through a notch and a guide valve, and the cross section of the variable-diameter pipe is in the shape of a sand hourglass.

[0007] Preferably, the inner sheath and the heat-conducting pad are matched with the air bag, the air bag is filled with helium, and the air bag is communicated with the inner cavity of the pad seat through the through pipe.

[0008] Preferably, the heat-conducting pad is integrally formed with the rib and the convex beam, the rib is matched with the tooth groove, and the ring pad is matched with the ring sleeve.

[0009] Preferably, the end of the sheath is provided with an energy storage reinforcing mechanism. The energy storage reinforcing mechanism comprises a female cover. One end of the sheath is provided with a female cover at the position of the head box, the other end of the sheath is provided with a male cover, the end of the male cover is rotatably provided with a threaded ring, the inner walls of the female cover and the male cover are both provided with mounting seats, the side end surface of the mounting seat in the female cover is embedded with a shaft cylinder in the middle, one end of the shaft cylinder is provided with a motor, and the other end of the shaft cylinder is provided with a guide box. The end of the output shaft of the motor is connected with a reciprocating screw, the outer side of the reciprocating screw is provided with a piston at the inner position of the shaft cylinder through threads, the end of the guide box is provided with a cannula, the outer curved surface of the cannula is provided with a plurality of through openings at equal angles in the circumferential direction, the outer curved surface of the shaft cylinder is symmetrically provided with a gas delivery valve at the positions on both sides of the piston, the end of the gas delivery valve is connected with a connecting pipe, the outer curved surface of the shaft cylinder is symmetrically provided with a gas suction valve at the positions on both sides of the piston, the end of the gas suction valve is connected with an open pipe, and the inner wall of one ring box is provided with a plurality of through valves at equal angles in the circumferential direction. The mutual inductance coil is sleeved on the outer wall of the inner sheath at the position of the ring pad gap, a plurality of storage batteries are embedded on the side end face of the mounting seat at equal angles in the circumferential direction, a rectifier is installed on the side end face of the mounting seat at the inner side of the storage batteries, a temperature sensing sensor is installed on the outer curved surface of the shaft cylinder, a snap ring is sleeved on the side end face of the pad seat, a plurality of ribs are installed on the side end face of the snap ring at equal angles in the circumferential direction, and a plurality of permanent magnetic sheets are evenly installed on the outer wall of the hoop sleeve.

[0010] Preferably, the ring box is filled with activated carbon, and the ring box provided with a valve is located on one side of the head box, the open pipe, the valve and the air mixing valve are communicated with the space on the same side of the mounting seat, and the tail box is connected with another ring box through the discharge pipe.

[0011] Preferably, the space inside the shaft cylinder on both sides of the piston is communicated with the guide box through the gas conveying valve and the connecting pipe, the guide box is communicated with the guide valve through the insertion pipe, and the insertion pipe is communicated with the inner cavity of the head box through the opening.

[0012] Preferably, the shaft cylinder is in sliding connection with the piston, the shaft cylinder is matched with the piston, the reciprocating lead screw is in rotary connection with the shaft cylinder, and the gas conveying valve, the air suction valve, the air mixing valve, the guide valve and the guide valve are all one-way flow valves.

[0013] Compared with the prior art, the present application has the advantages that the structure is scientific and reasonable, and the use is safe and convenient. 1. The double-pass protection mechanism is provided, and the heat exchange passages of the inner and outer channels can be constructed by cooperation of the pad seat, the core pipe, the head box, the tail box, the air mixing valve, the discharge pipe, the ring box and the filter screen, so that the double heat exchange is realized. In addition, the flow limiting and guiding effects of the dust screen, the reducing pipe, the guide valve, the slot and the guide valve can effectively combine the spontaneous heat dissipation and the active heat exchange, and the heat exchange efficiency and the energy consumption are simultaneously considered. On the one hand, the venturi effect can be combined on the basis of the spontaneous heat dissipation to realize the active heat exchange, greatly improve the heat exchange efficiency, guarantee the timeliness and effectiveness of the heat exchange work, fully guarantee the stability and efficiency of the cable work, avoid the rapid aging of the cable due to the untimely heat dissipation, equivalently improve the effective service life of the cable, and on the other hand, the double-effect heat exchange of the inner and outer channels can be realized, the heat exchange can be more fully promoted, the heat exchange blind area can be greatly reduced, and the pain point that the heat is accumulated at the center of the cable core and is not easily discharged can be effectively solved. The flexible protection structure can be constructed by cooperation of the sheath, the air bag, the heat conduction pad and the pipe, the cable core can be more fully and efficiently protected, the limiting effects of the hoop sleeve, the ring pad, the ring sleeve, the tooth groove, the rib and the convex beam can effectively expand the heat exchange area, the heat dissipated by the cable core can be more efficiently exchanged and transmitted, the flow and conduction effects of the helium can effectively balance the temperatures among the cable cores and among all directions of the cable core, the local overheating of the cable core and the aging deviation among different cable cores due to the uneven heating can be effectively reduced, the cable can work more long-term and efficiently, and the balance of the cable conveying work can be effectively guaranteed.

[0014] 2, provided with energy storage reinforcement mechanism, through the mutual inductor, battery and rectifier cooperation, can constitute electromagnetic conversion structure, can be transformed and utilized in the process of cable transmission of electromagnetic energy, plus shaft cylinder, motor, guide box, reciprocating screw and piston dynamic linkage, temperature sensor detection function, and gas valve, connecting pipe, suction valve and open pipe flow limiting guide role, can provide sufficient driving force for heat exchange airflow without consuming additional energy, on the one hand, the reasonable transformation and recycling of waste electromagnetic energy can be realized, the energy consumption of heat exchange work is equivalent to reduce, the heat exchange efficiency is improved, and the transmission efficiency of cable is improved, so that the cable can be more efficient and stable transmission; On the other hand, in cooperation with the cannula, the mouth and the valve, the airflow can be pulled and guided, which can effectively improve the unit gas exchange and realize more efficient heat exchange. Through the cooperation of the snap ring, the rib and the permanent magnet piece, stable support force can be given to the cable, the magnetic repulsion and the elastic force of the rib can be fully utilized to prevent the cable core from approaching each other, and the external extrusion force can be preliminarily offset and buffered, thereby reducing the influence of the external extrusion force on the cable. In addition, the sheath and the air bag heat exchange heat conduction pad can multi-limit the cable core, which can avoid cable core dislocation and disperse the external extrusion force, realize double unloading, effectively improve the overall strength of the cable, and effectively improve the connection stability of the cable joint through the cooperation of the female cover, the male cover, the threaded ring and the mounting seat, thereby reducing the failure rate of the cable joint.

[0015] In summary, the cable can realize internal and external double-channel heat exchange on the basis of natural heat dissipation, effectively combine passive heat dissipation and active heat exchange, balance energy consumption and heat exchange efficiency, effectively remove heat at the cable core intersection, more timely and efficient internal and external heat exchange, more comprehensive cable heat dissipation, internal heat circulation and exchange, effectively balance the heat at each part of the cable, make the cable more stable and efficient transmission, improve its transmission efficiency, and recycle and transform waste electromagnetic energy to make heat exchange work more efficient and smooth. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, which together with the embodiments of the application, is used to explain the application, and does not constitute a limitation on the application.

[0017] In the drawings: Figure 1 is a structural schematic diagram of the application; Figure 2 is a core pipe installation structure schematic diagram of the application; Figure 3 is a variable diameter pipe installation structure schematic diagram of the application; Figure 4 This is a schematic diagram of the head box mounting structure of the present invention; Figure 5 This is a schematic diagram of the dual-pass protection mechanism of the present invention; Figure 6 This is a schematic diagram of the outlet tube installation structure of the present invention; Figure 7 This is a schematic diagram of the energy storage enhancement mechanism of the present invention; Figure 8 This is a schematic diagram of the cannula installation structure of the present invention; The diagram is labeled as follows: 1. Sheath; 11. Cable core; 12. Insulating sleeve; 13. Shielding mesh; 20. Dual-pass protection mechanism; 201. Pad; 202. Core tube; 203. Reducer; 204. Pilot valve; 205. Groove; 206. Guide valve; 207. Head box; 208. Tail box; 209. Mixing valve; 210. Outlet pipe; 211. Ring box; 212. Filter screen; 213. Inner sheath; 214. Airbag; 215. Thermal pad; 216. Through pipe; 217. Clamp sleeve; 218. Ring gasket; 219. Ring sleeve; 220. Toothed groove; 221. Rib; 222. Protruding beam; 223. Dustproof net; 30. Energy storage enhancement mechanism; 301. Female cover; 302. Female cover; 303. Threaded ring; 304. Mounting base; 305. Shaft cylinder; 306. Motor; 307. Guide box; 308. Reciprocating screw; 309. Piston; 310. Insert tube; 311. Port; 312. Gas supply valve; 313. Connecting pipe; 314. Intake valve; 315. Open pipe; 316. Through valve; 317. Mutual inductance coil; 318. Battery; 319. Rectifier; 320. Temperature sensor; 321. Snap ring; 322. Rib; 323. Permanent magnet. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] Example: Figures 1-8 As shown, the present invention provides a technical solution: an energy storage aluminum alloy low-voltage cable, including a sheath 1, and a double-pass protection mechanism 20 installed inside the sheath 1. The dual-channel protective mechanism 20 includes a pad 201; The sheath 1 has several pads 201 evenly spaced inside. A core tube 202 is inserted through the middle of the side end face of the pad 201. Several reducers 203 are evenly spaced inside the core tube 202. A guide valve 204 is embedded in the top of the outer curved surface of the reducer 203. Several slots 205 are opened at equal angles along the circumference at the position of the reducer 203 on the outer curved surface of the core tube 202. The reducer 203 and the pads 201 are distributed adjacent to each other. The space between two adjacent pads 201 is connected to the reducer 203 through the slots 205 and the guide valve 204. The cross-section of the reducer 203 is hourglass-shaped to facilitate active heat exchange. Guide valves 206 are installed at both ends of the core tube 202. A head box 207 and a tail box 208 are installed at the ends of the two guide valves 206, respectively. A mixing valve 209 is installed at the bottom of the outer curved surface of the head box 207. An outlet pipe 210 is installed at the bottom of the outer curved surface of the tail box 208. A ring box 211 is symmetrically installed on the outer curved edge of the sheath 1. A filter screen 212 is embedded in the outer curved surface of the ring box 211. Several cable cores 11 are inserted at equal angles along the circumferential direction on the side end face of the pad 201. An inner sheath 213 is sleeved on the outside of the cable cores 11. An airbag 214 is installed on the outer wall of the inner sheath 213. A heat-conducting pad 215 is sleeved on the outside of the airbag 214. Several tubes 216 are evenly connected at equal intervals on the outer wall of the airbag 214. The inner sheath 213 and the heat-conducting pad 215 fit into the airbag 214. The airbag 214 is filled with helium. The airbag 214 is connected to the inner cavity of the pad 201 through the tubes 216 to balance the temperature of each part. A clamp sleeve 217 is clamped on the outer wall of the heat-conducting pad 215.

[0020] An insulating sleeve 12 is fitted onto the outer wall of the cable core 11, and a shielding mesh 13 is embedded and installed on the outer wall of the insulating sleeve 12 at the position inside the inner sheath 213. The outer wall of the inner sheath 213 is evenly and equidistantly equipped with several ring pads 218. The inner wall of the airbag 214 is provided with ring sleeves 219 at the positions corresponding to the ring pads 218. The inner wall of the heat-conducting pad 215 is equipped with several ribs 221 at equal angles along the circumference. The outer wall of the airbag 214 is provided with grooves 220 at the positions corresponding to the ribs 221. The top of the outer wall of the heat-conducting pad 215 is equipped with a protruding beam 222. The heat-conducting pad 215 is integrally formed with the ribs 221 and the protruding beam 222. The ribs 221 fit with the grooves 220. The ring pads 218 fit with the ring sleeves 219 to limit the movement and improve the heat exchange surface. The outer wall of the sheath 1 is embedded with a dustproof net 223 at the position corresponding to the pilot valve 204.

[0021] An energy storage reinforcement mechanism 30 is installed at one end of the sheath 1; The energy storage enhancement mechanism 30 includes a mother cover 301; A female cover 301 is installed at one end of the sleeve 1, located on one side of the head box 207. A female cover 302 is installed at the other end of the sleeve 1. A threaded ring 303 is rotatably installed at the end of the female cover 302. Mounting seats 304 are installed on the inner walls of both the female cover 301 and the female cover 302. A shaft cylinder 305 is embedded in the middle of the side end face of the mounting seat 304 inside the female cover 301. A motor 306 is installed at one end of the shaft cylinder 305, and a guide box 307 is installed at the other end of the shaft cylinder 305. A reciprocating screw 308 is connected to the output shaft end of the motor 306. A piston 309 is threadedly installed on the outside of the reciprocating screw 308 at the position inside the shaft cylinder 305. An insertion tube 310 is installed at the end of the guide box 307. Several through holes 311 are opened at equal angles along the circumferential direction on the outer curved surface of the insertion tube 310. Air supply valves 312 are symmetrically installed on one side of the outer curved surface of the shaft cylinder 305 at the positions on both sides of the piston 309. A connecting pipe 313 is connected to the end of the air supply valve 312. The space inside the shaft cylinder 305 located on both sides of the piston 309 is connected to the guide box 307 through the gas supply valve 312 and the connecting pipe 313. The guide box 307 is connected to the guide valve 206 through the insertion pipe 310. The insertion pipe 310 is connected to the inner cavity of the head box 207 through the port 311 to promote efficient heat exchange. On the other side of the outer curved surface of the shaft cylinder 305, the suction valve 314 is symmetrically installed on both sides of the piston 309. The shaft cylinder 305 and the piston 309 are slidably connected and fit together. The reciprocating screw 308 is rotatably connected to the shaft cylinder 305. The gas supply valve 312, suction valve 314, mixing valve 209, guide valve 206 and guide valve 204 are all one-way flow valves to ensure the stability of airflow and avoid backflow. An open pipe 315 is connected to the end of the intake valve 314. Several through valves 316 are installed at equal angles along the circumference of the inner wall of an annular box 211. The annular box 211 is filled with activated carbon, and the annular box 211 with the through valves 316 is located on one side of the head box 207. The open pipe 315, through valves 316 and mixing valve 209 are connected to the space on the same side of the mounting base 304. The tail box 208 is connected to another annular box 211 through the outlet pipe 210. Flow restriction and guidance have been implemented to promote heat exchange. An inductor coil 317 is fitted onto the outer wall of the inner sheath 213 at the gap position of the annular gasket 218. Several batteries 318 are embedded at equal angles along the circumferential direction on the side end face of the mounting base 304. A rectifier 319 is installed on the side end face of the mounting base 304 inside the batteries 318. A temperature sensor 320 is installed on the bottom of the outer curved surface of the shaft cylinder 305. A retaining ring 321 is fitted onto the side end face of the pad 201. The side end face of the retaining ring 321 is circumferentially... A number of ribs 322 are installed at equal angles. A number of permanent magnet plates 323 are evenly installed on the outer wall of the clamp sleeve 217. The mutual inductance coil 317 charges the storage battery 318 through the rectifier 319. The storage battery 318 supplies power to the temperature sensor 320 and the motor 306 through the rectifier 319. The start and stop of the motor 306 are controlled by the temperature sensor 320. The ribs 322 are spiral-shaped and each permanent magnet plate 323 has the same magnetism to perform energy recovery and conversion.

[0022] The working principle and usage process of this invention: The aluminum alloy low-voltage cable of this energy storage can be used in conjunction with an external energy storage system. In energy storage projects, it is mainly used for the connection of equipment in the station, wiring between battery clusters and low-voltage power distribution system. In actual use, the appropriate size and specification of cable should be selected according to the actual transmission requirements. At the same time, according to the actual transmission requirements, the selected energy storage cables should be connected to each other in sequence and connected to the corresponding external equipment. After completing the connection between the cables, rotate each threaded ring 303 in sequence and screw it into the adjacent female cover 301. The threaded ring 303 fixes the corresponding female cover 301 and female cover 302 in sequence. The female cover 301 and female cover 302 protect the joint connection of each cable to ensure the stability of the cable during use. Then the energy storage aluminum alloy low voltage cable can be put into use. During normal use of the cable, as the power transmission proceeds, the cable core 11 will heat up accordingly. The heat it emits will be absorbed by the helium gas inside the air bladder 214, which will cause the air pressure inside the air bladder 214 to rise. The air bladder 214 will expand accordingly under the action of the internal air pressure, simultaneously squeezing the inner sheath 213 on the inner side and the heat-conducting pad 215 on the outer side. This will cause the ring sleeve 219 to squeeze the ring pad 218 with greater force, and make the tooth groove 220 and the rib 221 more stably mesh. While preventing the cable cores 11 from being misaligned and shifting, and making the external protective structures more compact and reliable, the heat exchange area can be greatly increased. On the one hand, the heat emitted by the cable core 11 can penetrate the inner sheath 213 more quickly and efficiently and be absorbed by the helium inside the airbag 214. On the other hand, the pressure of the helium inside the airbag 214 will fluctuate with the amount of heat absorbed. Under the action of air pressure, it will flow accordingly and always maintain a flow state towards the relatively low pressure side. During the flow, the heat it carries will pass through the larger area of ​​the airbag 214 and exchange heat with the heat-conducting pad 215. Under the conduction of the heat-conducting pad 215, the heat will diffuse into the gaps between the corresponding pads 201 inside the sheath 1 for preliminary spontaneous heat exchange. Simultaneously, during the flow of helium, the heat emitted by the cable core 11 is transferred from the inside to the outside. That is, the heat on the outside of each cable core 11 will gradually decrease from the side of the cable core 11 to the side of the heat-conducting pad 215. Correspondingly, the helium pressure will also be distributed in this state. With the connection of the through pipe 216, the helium inside each airbag 214 will flow into each pad 201 under the action of air pressure and converge in the inner cavity of each pad 201. At the same time, it will maintain the flow trend towards the relatively low pressure side, forming an interactive circulation of helium between the airbags 214 on the outside of each cable core 11. In addition, the helium can flow along the radial direction of the cable along the airbag 214 under the action of pressure. During the flow of helium, heat transfer can be promoted and the temperature of each cable core 11 and the radial directions of the cable core 11 can be balanced. When the heat emitted by the cable core 11 exceeds the limit of spontaneous heat exchange, the cable temperature will rise accordingly. The temperature sensor 320 will send a signal to the motor 306 to control its start. The motor 306 will drive the piston 309 to move back and forth inside the shaft cylinder 305 through the reciprocating screw 308. Under the flow restriction guidance of the shaft cylinder 305 and the suction valve 314, the external airflow will pass through the filter screen 212, be filtered by the activated carbon inside the ring box 211 on one side of the head box 207, pass through the through valve 316, and be drawn into the shaft cylinder 305 through the open pipe 315. Then it will be pressed into the guide box 307 through the connecting pipe 313. With the connection of the insertion pipe 310, it will be sent into the core tube 202 through the corresponding guide valve 206. At the same time, when the airflow flows through the insertion tube 310, a negative pressure will be formed at the port 311 under the static pressure traction. Under the flow restriction guidance of the mixing valve 209, part of the airflow flowing out through the valve 316 will enter the head box 207 under the negative pressure traction and pass through the port 311, and merge with the airflow flowing into the insertion tube 310 through the guide box 307, thereby increasing the air exchange volume. Then the airflow will flow along the core tube 202. When it flows through each reducing pipe 203, its flow velocity will increase due to the narrowing of the flow channel, thereby forming a stronger negative pressure traction force at the guide valve 204. Subsequently, the airflow in the space between the corresponding pads 201 inside the sheath 1 will pass through the slot 205 under the Venturi effect, flow into the reducer 203 through the guide valve 204, and merge with the airflow inside the core tube 202, flowing along the core tube 202. At the same time, after the airflow in the space between the corresponding pads 201 inside the sheath 1 flows into the core tube 202, the air pressure in the space between the corresponding pads 201 inside the sheath 1 will decrease. The external airflow will pass through the corresponding dustproof net 223 under the air pressure and enter the space between the corresponding pads 201 inside the sheath 1 to replenish it. Finally, the airflow flowing into the core tube 202 will flow into the tail box 208 through the guide valve 206 at the other end, and then flow into another ring box 211 through the outlet pipe 210. After being filtered by activated carbon and filter screen 212, it will be discharged into the atmosphere, and the heat it carries will also be discharged. Since the airflow flows in from the outside of the cable and flows along the core tube 202 in the center of the cable, it can fully absorb the heat discharged from each heat-conducting pad 215 in this process, realize all-round heat exchange inside and outside, and solve the problem of the heat dissipation of each cable core 11 converging point, that is, the heat in the center of each cable core 11 cannot be discharged in time. During the use of the cable, when the cable is subjected to external pressure and bending, the helium inside the reinforcing bar 322 and the air bladder 214 will be compressed. The reinforcing bar 322 will deform and expand accordingly to provide initial buffering, and the helium will flow under the external pressure to further disperse and resolve the external force. At the same time, the magnetic repulsion generated between the permanent magnet sheets 323 can prevent the cable cores 11 from getting close to each other and prevent the cable cores 11 from bending. In addition, the limiting effect of the retaining ring 321 and the reinforcing bar 322 can make the cable more resilient. Airbag 214 lifespan ≥ 10 4 Sub-thermal cycles, leakage rate ≤1% / year, dielectric strength ≥5 kV / mm; Similarly, during the use of the cable, when current flows through the cable core 11, an induced current is generated in the mutual inductance coil 317. After being converted into pulsating DC by the rectifier 319, it is then processed by the filtering and voltage regulation unit in the control circuit to obtain a stable DC power that can be used by the storage battery 318 and downstream electronic devices. Then, the storage battery 318 is charged and stored to provide power for the temperature sensor 320 and the motor 306. During application, the induced current generated in the mutual inductance coil 317 mainly powers the temperature sensor 320. The specific power of the battery 318 and the motor 306 can be adaptively selected according to actual needs. The motor 306 can also be provided with power compensation through an external power source. Different on-site solutions can be selected for on-site operation or directly deleted. Furthermore, helium can be replaced with nitrogen or argon depending on the requirements.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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-storing aluminum alloy low-voltage cable comprising a sheath (1), characterized in that: The double-pass protection mechanism (20) is arranged in the sheath (1); The double-pass protection mechanism (20) comprises a pad seat (201); A plurality of pad seats (201) are uniformly and equidistantly arranged in the sheath (1), a core pipe (202) is arranged in the middle of the side end surface of the pad seat (201), a plurality of variable-diameter pipes (203) are uniformly and equidistantly arranged in the core pipe (202), a guide valve (204) is embedded and arranged on the top of the outer curved surface of the variable-diameter pipe (203), a plurality of notches (205) are formed on the outer curved surface of the core pipe (202) at positions corresponding to the variable-diameter pipes (203) at equal angles along the circumferential direction, guide valves (206) are arranged at both ends of the core pipe (202), head boxes (207) and tail boxes (208) are arranged at the ends of the guide valves (206), respectively, a mixed air valve (209) is arranged on the bottom of the outer curved surface of the head box (207), and a lead-out pipe (210) is arranged on the bottom of the outer curved surface of the tail box (208). Ring boxes (211) are symmetrically arranged on the outer curved surface of the sheath (1), filter screens (212) are embedded and arranged on the outer curved surface of the ring boxes (211), a plurality of cable cores (11) are arranged at equal angles along the circumferential direction at the side end surface of the pad seat (201), inner sheaths (213) are sleeved on the outer sides of the cable cores (11), air bags (214) are arranged on the outer walls of the inner sheaths (213), heat-conducting pads (215) are sleeved on the outer sides of the air bags (214), a plurality of through pipes (216) are uniformly and equidistantly connected to the outer walls of the air bags (214), and hoop sleeves (217) are clamped on the outer walls of the heat-conducting pads (215).

2. An energy-storing, aluminum-alloy, low-voltage cable according to claim 1, characterized in that Insulating sleeves (12) are sleeved on the outer walls of the cable cores (11), shielding nets (13) are embedded and arranged on the outer walls of the insulating sleeves (12) at positions inside the inner sheaths (213); A plurality of ring pads (218) are uniformly and equidistantly arranged on the outer walls of the inner sheaths (213), ring sleeves (219) are arranged on the inner walls of the air bags (214) at positions corresponding to the ring pads (218), a plurality of rib strips (221) are arranged at equal angles along the circumferential direction on the inner walls of the heat-conducting pads (215), tooth grooves (220) are arranged on the outer walls of the air bags (214) at positions corresponding to the rib strips (221), convex beams (222) are arranged on the outer walls of the heat-conducting pads (215), and dustproof nets (223) are embedded and arranged on the outer walls of the sheaths (1) at positions corresponding to the guide valves (204).

3. An energy-storing aluminum alloy low-voltage cable according to claim 1, characterized in that The variable-diameter pipes (203) are arranged adjacent to the pad seats (201), and the space between two adjacent pad seats (201) is communicated with the variable-diameter pipes (203) through the notches (205) and the guide valves (204), and the cross section of the variable-diameter pipe (203) is in the shape of a sandglass.

4. An energy-storing aluminum alloy low-voltage cable according to claim 1, characterized in that The inner sheaths (213) and the heat-conducting pads (215) are matched with the air bags (214), the air bags (214) are filled with helium, and the air bags (214) are communicated with the inner cavities of the pad seats (201) through the through pipes (216).

5. An energy-storing, aluminum-alloy, low-voltage cable according to claim 2, characterized in that The heat-conducting pad (215) is integrally formed with the rib (221) and the convex beam (222), the rib (221) is matched with the tooth groove (220), and the ring pad (218) is matched with the ring sleeve (219).

6. An energy-storing aluminum alloy low-voltage cable according to claim 1, characterized in that The sheath (1) is provided with an energy storage strengthening mechanism (30) at one end; The energy storage strengthening mechanism (30) comprises a female cover (301); The female cover (301) is arranged at one side of the head box (207) at one end of the sheath (1), a male cover (302) is arranged at the other end of the sheath (1), a threaded ring (303) is rotatably arranged at the end of the male cover (302), mounting seats (304) are arranged on the inner walls of the female cover (301) and the male cover (302), an axle cylinder (305) is embedded in the middle of the side end surface of the mounting seat (304) in the female cover (301), a motor (306) is arranged at one end of the axle cylinder (305), and a guide box (307) is arranged at the other end of the axle cylinder (305). A reciprocating screw rod (308) is connected to the end of the output shaft of the motor (306), a piston (309) is threadedly arranged outside the reciprocating screw rod (308) at the position inside the axle cylinder (305), a cannula (310) is arranged at the end of the guide box (307), a plurality of through openings (311) are formed on the outer curved surface of the cannula (310) at equal angles in the circumferential direction, gas inlet valves (312) are symmetrically arranged on the outer curved surface of the axle cylinder (305) at positions on both sides of the piston (309), connecting pipes (313) are connected to the ends of the gas inlet valves (312), gas suction valves (314) are symmetrically arranged on the outer curved surface of the axle cylinder (305) at positions on both sides of the piston (309), open pipes (315) are connected to the ends of the gas suction valves (314), and a plurality of through valves (316) are arranged on the inner wall of one ring box (211) at equal angles in the circumferential direction. A mutual inductor (317) is sleeved on the outer wall of the inner sheath (213) at the gap position between the ring pads (218), a plurality of storage batteries (318) are embedded and arranged at equal angles in the circumferential direction on the side end surface edge of the mounting seat (304), a rectifier (319) is arranged on the side end surface of the mounting seat (304) at the position inside the storage batteries (318), a temperature sensing sensor (320) is arranged on the outer curved surface of the axle cylinder (305), a clamping ring (321) is sleeved on the side end surface edge of the side end surface of the clamping ring (321), a plurality of ribs (322) are arranged at equal angles in the circumferential direction on the side end surface of the clamping ring (321), and a plurality of permanent magnetic sheets (323) are evenly arranged at equal intervals on the outer wall of the hoop sleeve (217).

7. An energy-storing, aluminum-alloy, low-voltage cable according to claim 6, characterized in that The ring box (211) is filled with activated carbon, the ring box (211) provided with the through valve (316) is located at one side of the head box (207), the open pipe (315), the through valve (316) and the air mixing valve (209) are in communication with the space on the same side of the mounting seat (304), and the tail box (208) is connected with another ring box (211) through the discharge pipe (210).

8. An energy-storing, aluminum-alloy, low-voltage cable according to claim 6, characterized in that The space inside the shaft cylinder (305) on both sides of the piston (309) is communicated with the guide box (307) through the gas delivery valve (312) and the connecting pipe (313), the guide box (307) is communicated with the guide valve (206) through the insertion pipe (310), and the insertion pipe (310) is communicated with the inner cavity of the head box (207) through the through hole (311).

9. An energy-storing aluminum alloy low-voltage cable according to claim 6, characterized in that The shaft cylinder (305) is in sliding connection with the piston (309), and the shaft cylinder (305) is matched with the piston (309), the reciprocating lead screw (308) is in rotary connection with the shaft cylinder (305), and the gas delivery valve (312), the air suction valve (314), the air mixing valve (209), the guide valve (206) and the guide valve (204) are all one-way flow valves.

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