A multi-core energy storage aluminum alloy medium-voltage cable

Abstract

This invention discloses a multi-core energy storage aluminum alloy medium-voltage cable, relating to the field of aluminum alloy cable technology. A left arc-shaped shunt hollow block is attached to both ends of the protective layer surface, and a right arc-shaped shunt hollow block is attached to one side of each of the left arc-shaped shunt hollow blocks. Arc-shaped flat guide tubes are equidistantly installed between the ends of the two left arc-shaped shunt hollow blocks and between the ends of the two right arc-shaped shunt hollow blocks. This invention utilizes a pump and pipeline to transport cooling water. The continuous circulation of water on the surface of the protective layer absorbs and conducts heat from inside the cable, efficiently and quickly dissipating heat and cooling the cable. Simultaneously, a cooling separation layer is formed on the outer side of the core, reducing the adverse effects of high-temperature heat from the external environment transferring to the cable's interior.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy cable technology, specifically to a multi-core energy storage aluminum alloy medium-voltage cable. Background Technology

[0002] Energy storage systems are an important part of the new energy field, enabling the efficient transmission of electrical energy. Energy storage cables are key components of new energy power systems, requiring high performance. Aluminum alloy cables, with their lightweight, corrosion resistance, and cost-effectiveness, have become the preferred solution for energy storage scenarios. The dense oxide film formed on the surface of aluminum alloys can resist chemical corrosion and meet the application requirements in various environments. Aluminum alloy cables weigh only 50%-60% of copper cables, significantly reducing transportation and installation costs. Their procurement costs are also lower than those of copper cables, making them suitable for large-scale energy storage projects. Their lightweight characteristics are particularly well-suited to the dense cabling requirements of containerized energy storage power stations. However, currently, aluminum alloy energy storage cables are prone to generating a large amount of heat when operating at high power for extended periods in energy storage systems. The cable's own heat dissipation efficiency is too low, causing heat to accumulate inside the cable. This results in the core operating in a high-temperature and high-heat environment, which can easily affect its normal transmission power and reduce the cable's service life. Therefore, this invention provides a multi-core energy storage aluminum alloy medium-voltage cable to meet people's needs. Summary of the Invention

[0003] This invention provides a multi-core energy storage aluminum alloy medium-voltage cable, which can effectively solve the problem mentioned in the background art that aluminum alloy energy storage cables in energy storage systems are prone to generating a large amount of heat during long-term high-power operation. The cable's own heat dissipation efficiency is too low, causing heat to accumulate inside the cable. This results in the core operating in a high-temperature and high-heat environment, which can easily affect its normal transmission power and reduce the cable's service life.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-core energy storage aluminum alloy medium-voltage cable, comprising four cores, each of the four cores having a rubber insulation layer extruded and wrapped on its surface, each of the four rubber insulation layers having a copper mesh shielding layer sleeved on its surface, and a protective layer sleeved on the outside of the four copper mesh shielding layers, wherein the surface of the protective layer is provided with a spliced ​​cyclic high-temperature resistant mechanism. The spliced ​​circulating high-temperature resistant mechanism includes a left arc-shaped diversion hollow block; Both ends of the protective layer surface are fitted with a left arc-shaped flow-diverting hollow block, and both ends of the protective layer surface are fitted with a right arc-shaped flow-diverting hollow block located on one side of the left arc-shaped flow-diverting hollow block. Arc-shaped fitting flow-guiding flat tubes are installed at equal intervals between the ends of the two left arc-shaped flow-diverting hollow blocks and between the ends of the two right arc-shaped flow-diverting hollow blocks. A connector is connected to the bottom end of the left arc-shaped diversion hollow block. A three-way connector is installed at the bottom of the connector. A liquid control valve is installed at the bottom end of the three-way connector. An infusion pipeline is connected to the bottom end of the liquid control valve. An external storage tank is installed at the bottom of the infusion pipeline. An infusion pump is installed inside the external storage tank. One end of the left-hand arc-shaped shunt hollow block is connected to a connecting tube.

[0005] According to the above technical solution, the protective layer is filled with a fiber rope filling layer, and a sealing gasket is fixedly bonded to the surface of the connecting tube; The arc-shaped, fitted, guide tube is tightly attached to the surface of the protective layer, and the bottom end of the infusion pipeline is connected to the infusion pump.

[0006] According to the above technical solution, a circular hole is provided at one end of the right arc-shaped diverting hollow block, and the connecting tube is inserted into the interior of the right arc-shaped diverting hollow block through the circular hole.

[0007] According to the above technical solution, a gas control valve is installed at one end of the three-way connector, a gas transmission pipeline is connected to one end of the gas control valve, a micro air pump is installed at the top of the external liquid storage tank, a gas check valve is installed at the top of the external liquid storage tank, and a circulation pipeline is connected to the bottom of the right arc-shaped diversion hollow block. The top and bottom ends of the left and right arc-shaped diversion hollow blocks are connected to splicing blocks, and locking bolts are installed in the middle of the splicing blocks. Limiting straps are fitted onto the surface of the arc-shaped conforming guide tube.

[0008] According to the above technical solution, the gas transmission pipeline is connected to the output end of the micro gas pump, and the bottom end of the circulation pipeline extends into the interior of the external liquid storage tank.

[0009] According to the above technical solution, the left arc-shaped diversion hollow block and the right arc-shaped diversion hollow block are in close contact with each other, and the left arc-shaped diversion hollow block and the right arc-shaped diversion hollow block are fixedly connected by locking bolts.

[0010] According to the above technical solution, a reset and rebound protection mechanism is provided in the middle of the inner part of the protective layer; The reset and rebound protection mechanism includes a positioning rubber rod; A positioning rubber rod is installed in the center of the inner part of the protective layer. The surface of the positioning rubber rod is provided with mounting grooves at equal intervals. Arc-shaped rubber support blocks are installed at equal intervals along the circumferential direction on the inner side of the protective layer. Arc-shaped elastic metal blocks are symmetrically connected to the bottom end of the arc-shaped rubber support blocks. A support rubber strip is connected to the bottom end of two arc-shaped elastic metal blocks. A support rubber block is embedded in the interior between the two arc-shaped elastic metal blocks. Positioning blocks are connected at equal intervals to the bottom end of the support rubber strip. The positioning block is movably embedded inside the mounting groove, and the arc-shaped rubber support block and the arc-shaped elastic metal block are located in the middle between two adjacent cores.

[0011] According to the above technical solution, an arc-shaped isolation block is installed inside the protective layer at one side of the core. The bottom end of the arc-shaped isolation block is symmetrically connected with a reset and rebound metal sheet. A shaping support airbag is embedded between the two reset and rebound metal sheets. An upper curved rubber sheet is attached to the top of the inner wall of the protective layer, and a lower curved rubber sheet is attached to the bottom of the inner wall of the protective layer. Curved rubber limiting blocks are symmetrically connected inside the upper and lower curved rubber sheets. Adhesive strips are bonded to both ends of the top of the upper and lower curved rubber sheets.

[0012] According to the above technical solution, there are four arc-shaped isolation blocks, which are respectively attached to the surfaces of four copper mesh shielding layers, and the reset spring metal sheet is connected to the positioning rubber rod.

[0013] According to the above technical solution, there are four arc-shaped rubber limiting blocks, which are respectively attached to the surface of four copper mesh shielding layers. The upper and lower arc-shaped rubber sheets are fixedly connected by adhesive strips.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. It is equipped with a spliced ​​circulating high-temperature resistant mechanism, and uses infusion pumps and pipelines to transport cooling water. The water continuously circulates on the surface of the protective layer to absorb and conduct heat inside the cable, which can efficiently and quickly dissipate the heat inside the cable and cool it down. At the same time, a certain cooling partition layer is formed on the outside of the core to reduce the adverse effects of high temperature heat from the external environment on the inside of the cable. This prevents the cable core from operating in a high-temperature environment for a long time due to poor self-heating effect and external environmental influence, which would reduce its working efficiency and shorten its life. The left and right arc-shaped hollow diversion blocks work together to position the arc-shaped guide tube, ensuring it adheres tightly to the surface of the protective layer. Furthermore, the left and right arc-shaped hollow diversion blocks divert the water flow, distributing it evenly within the arc-shaped guide tube.

[0015] 2. By using the connecting pipe and sealing gasket in conjunction, the left and right arc-shaped diversion hollow blocks are connected, allowing water to flow continuously within them. The splicing blocks and locking bolts connect and fix the left and right arc-shaped diversion hollow blocks, forming a whole with the cable and covering the surface of the protective layer. The disassembly and installation methods are simple, providing great convenience for workers to lay, splice, and disassemble cables.

[0016] 3. By using a micro air pump and air delivery pipeline in combination, an airflow is generated to compress the water flow inside the left arc-shaped splitting hollow block, the right arc-shaped splitting hollow block, and the arc-shaped fitting guide flat tube, so that the water flow re-enters the external storage tank. This allows for precise control of the water flow position, ensuring that the water can be stored in the external storage tank for cooling when no cooling is needed, resulting in better subsequent cooling effect.

[0017] 4. A reset and rebound protection mechanism is provided, which uses arc-shaped rubber support blocks and arc-shaped elastic metal blocks to support and buffer the middle of the gap between adjacent cores. When the arc-shaped elastic metal blocks are subjected to pressure, they can push the arc-shaped rubber support blocks back to their original positions through their own elastic recovery ability. This plays a role in supporting and shaping the cable as a whole, preventing the cable from deforming under pressure and causing the cores to shift and affect each other. At the same time, the arc-shaped isolation block and the reset spring metal sheet work together to support and protect the outside of the core. When the core is subjected to external pressure in the cable, it rebounds and recovers. The compression deformation also buffers the pressure, reducing the damage to the core and protecting it.

[0018] 5. Adhesive strips are used to bond and fix the upper and lower curved rubber sheets, so that the upper and lower curved rubber sheets surround the outside of the four cores. The curved rubber limiting blocks are in close contact with the surface of the copper mesh shielding layer to limit and support the cores, preventing the cores from shifting and deforming due to pressure during cable production.

[0019] In summary, by combining the spliced ​​cyclic high-temperature resistance mechanism and the reset and rebound protection mechanism, the cable absorbs and cools down under specific high-temperature environments or when a large amount of heat is generated inside the cable, thus providing a certain degree of protection. This ensures that the cable core operates within a suitable temperature environment. Internally, the outer side of the core provides support and buffering, reducing the squeezing and impact on the core, and also supports and limits the core's position to prevent internal deformation and displacement, further protecting the core. By adjusting the internal and external directions, as well as the operating environment, the overall cable is protected, significantly extending its service life. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0021] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the cable of the present invention; Figure 3 This is a schematic diagram of the installation structure of the arc-shaped rubber support block of the present invention; Figure 4 This is a schematic diagram of the structure of the spliced ​​cyclic high-temperature resistant mechanism of the present invention; Figure 5 This is a schematic diagram of the installation structure of the connecting tube of the present invention; Figure 6 This is a schematic diagram of the installation structure of the arc-shaped rubber sheet wrapped around the present invention; Figure 7 This is a schematic diagram of the reset and rebound protection mechanism of the present invention; The diagram labels are: 1. Core; 2. Rubber insulation layer; 3. Copper mesh shielding layer; 4. Protective layer. 5. Interlocking circulating high-temperature resistant mechanism; 501. Left arc-shaped diversion hollow block; 502. Right arc-shaped diversion hollow block; 503. Arc-shaped fitting guide flat tube; 504. Connector; 505. T-connector; 506. Liquid control valve; 507. Infusion pipeline; 508. External storage tank; 509. Infusion pump; 510. Connecting tube; 511. Sealing gasket; 512. Gas control valve; 513. Gas pipeline; 514. Miniature air pump; 515. Gas check valve; 516. Interlocking block; 517. Locking bolt; 518. Limiting strap; 519. Circulation pipeline; 6. Reset and rebound protection mechanism; 601. Positioning rubber rod; 602. Mounting groove; 603. Arc-shaped rubber support block; 604. Arc-shaped elastic metal block; 605. Supporting rubber strip; 606. Positioning block; 607. Supporting rubber block; 608. Arc-shaped isolation block; 609. Reset and rebound metal sheet; 610. Shaping support airbag; 611. Upper arc-shaped rubber sheet; 612. Lower arc-shaped rubber sheet; 613. Arc-shaped rubber limiting block; 614. Adhesive strip; 7. Fiber rope filling layer. Detailed Implementation

[0022] 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.

[0023] Example: Figure 1-7As shown, the present invention provides a technical solution: a multi-core energy storage aluminum alloy medium-voltage cable, comprising four cores 1, each core 1 having a rubber insulation layer 2 extruded and wrapped around its surface; each rubber insulation layer 2 having a copper mesh shielding layer 3 sleeved on its surface; a protective layer 4 sleeved on the outside of each copper mesh shielding layer 3; a fiber rope filling layer 7 filling the interior of the protective layer 4; and a spliced ​​circulating high-temperature resistant mechanism 5 provided on the surface of the protective layer 4. The spliced ​​circulating high-temperature resistant mechanism 5 includes a left arc-shaped diversion hollow block 501, a right arc-shaped diversion hollow block 502, an arc-shaped fitting guide flat tube 503, a connector 504, a three-way connector 505, a liquid control valve 506, an infusion pipeline 507, an external liquid storage tank 508, an infusion pump 509, a connecting tube 510, a sealing gasket 511, a gas control valve 512, a gas infusion pipeline 513, a micro air pump 514, a gas one-way valve 515, a splicing block 516, a locking bolt 517, a limit strap 518, and a circulation pipeline 519. Left arc-shaped flow-diverting hollow blocks 501 are attached to both ends of the surface of the protective layer 4. Right arc-shaped flow-diverting hollow blocks 502 are attached to both ends of the surface of the protective layer 4 at one side of the left arc-shaped flow-diverting hollow blocks 501. Arc-shaped attached flow-guiding flat tubes 503 are installed at equal intervals between the ends of the two left arc-shaped flow-diverting hollow blocks 501 and between the ends of the two right arc-shaped flow-diverting hollow blocks 502. The arc-shaped attached flow-guiding flat tubes 503 are tightly attached to the surface of the protective layer 4. A connector 504 is connected to the bottom of a left-hand arc-shaped splitter hollow block 501. A three-way connector 505 is installed at the bottom of the connector 504. A liquid control valve 506 is installed at the bottom of the three-way connector 505. An infusion pipeline 507 is connected to the bottom of the liquid control valve 506. An external storage tank 508 is installed at the bottom of the infusion pipeline 507. An infusion pump 509 is installed inside the external storage tank 508. The bottom of the infusion pipeline 507 is connected to the infusion pump 509, and the infusion pump 507 and the infusion pipeline 507 are connected together. 7. Water for cooling is transported and continuously circulated on the surface of the protective layer 4 to absorb and conduct heat inside the cable. This can efficiently and quickly dissipate heat from inside the cable, thus cooling the cable. At the same time, a cooling partition layer is formed on the outside of the core 1 to reduce the adverse effects of high-temperature heat from the external environment being transferred to the inside of the cable. This prevents the cable core 1 from operating in a high-temperature environment for a long time due to poor self-heating effect and the influence of the external environment, which would reduce its working efficiency and shorten its life. The left arc-shaped diversion hollow block 501 and the right arc-shaped diversion hollow block 502 work together to position the arc-shaped fitting guide tube 503, making it fit tightly against the surface of the protective layer 4. The left arc-shaped diversion hollow block 501 and the right arc-shaped diversion hollow block 502 also divert the water flow, making it evenly distributed inside the arc-shaped fitting guide tube 503. One end of a left arc-shaped shunt hollow block 501 is connected to a connecting tube 510, and one end of a right arc-shaped shunt hollow block 502 is provided with a round hole. The connecting tube 510 is inserted into the interior of the right arc-shaped shunt hollow block 502 through the round hole, and a sealing gasket 511 is fixedly bonded to the surface of the connecting tube 510. A gas control valve 512 is installed at one end of the three-way connector 505. A gas supply pipe 513 is connected to one end of the gas control valve 512. A micro air pump 514 is installed at one end of the top of the external liquid storage tank 508. A gas check valve 515 is installed at the top of the external liquid storage tank 508. A circulation pipe 519 is connected to the bottom end of a right arc-shaped diversion hollow block 502. The gas supply pipe 513 is connected to the output end of the micro air pump 514. The bottom end of the circulation pipe 519 extends into the interior of the external liquid storage tank 508. Both the top and bottom ends of the left arc-shaped diversion hollow block 501 and the right arc-shaped diversion hollow block 502 are connected to splicing blocks 516. A locking bolt 517 is installed in the middle of the splicing block 516. The left arc-shaped diversion hollow block 501 and the right arc-shaped diversion hollow block 502 are in close contact with each other and are fixedly connected by the locking bolt 517. A limiting strap 518 is fitted onto the surface of the arc-shaped conforming guide tube 503. The connection is achieved using a connecting tube 510 and a sealing gasket. The rings 511 work together to connect the left arc-shaped diversion hollow block 501 and the right arc-shaped diversion hollow block 502, allowing water to flow continuously inside. The splicing block 516 and the locking bolt 517 connect and fix the left arc-shaped diversion hollow block 501 and the right arc-shaped diversion hollow block 502, making them an integral part of the cable and covering the surface of the protective layer 4. The disassembly and installation are simple, which greatly facilitates the cable laying, splicing and disassembly of the staff. By using a micro air pump 514 and an air delivery pipe 513 in cooperation, an airflow is generated to compress the water flow inside the left arc-shaped splitting hollow block 501, the right arc-shaped splitting hollow block 502, and the arc-shaped conforming guide flat pipe 503, so that the water flow re-enters the external liquid storage tank 508. This precise control of the water flow position ensures that when cooling is not required, the water can be stored in the external liquid storage tank 508 for cooling and idle time, resulting in better subsequent cooling effect. A reset and rebound protection mechanism 6 is provided in the middle of the inner part of the protective layer 4; The reset and rebound protection mechanism 6 includes a positioning rubber rod 601, a mounting groove 602, an arc-shaped rubber support block 603, an arc-shaped elastic metal block 604, a support rubber strip 605, a positioning block 606, a support rubber block 607, an arc-shaped isolation block 608, a reset and rebound metal sheet 609, a shaping support airbag 610, an upper arc-shaped rubber sheet 611, a lower arc-shaped rubber sheet 612, an arc-shaped rubber limiting block 613, and an adhesive strip 614. A positioning rubber rod 601 is installed in the middle of the inner part of the protective layer 4. The surface of the positioning rubber rod 601 is provided with mounting grooves 602 at equal intervals. Arc-shaped rubber support blocks 603 are installed at equal intervals along the circumferential direction on the inner side of the protective layer 4. Arc-shaped elastic metal blocks 604 are symmetrically connected to the bottom end of the arc-shaped rubber support blocks 603. A support rubber strip 605 is connected to the bottom end of the two arc-shaped elastic metal blocks 604. A support rubber block 607 is embedded in the interior between the two arc-shaped elastic metal blocks 604. A positioning block 606 is connected at equal intervals to the bottom end of the support rubber strip 605. The positioning block 606 is movably embedded in the interior of the mounting groove 602. The arc-shaped rubber support blocks 603 and the arc-shaped elastic metal blocks 604 are located in the middle between two adjacent cores 1. Inside the protective layer 4, an arc-shaped isolation block 608 is installed on one side of the core 1. The bottom end of the arc-shaped isolation block 608 is symmetrically connected to a reset spring metal sheet 609. A shaping support airbag 610 is embedded between the two reset spring metal sheets 609. There are four arc-shaped isolation blocks 608. The four arc-shaped isolation blocks 608 are respectively attached to the surface of the four copper mesh shielding layers 3. The reset spring metal sheet 609 is connected to the positioning rubber rod 601. An upper curved rubber sheet 611 is fitted to the top of the inner wall of the protective layer 4, and a lower curved rubber sheet 612 is fitted to the bottom of the inner wall of the protective layer 4. Curved rubber limiting blocks 613 are symmetrically connected inside both the upper and lower curved rubber sheets 611 and 612. Adhesive strips 614 are bonded to both ends of the top of the upper curved rubber sheet 611 and the top of the lower curved rubber sheet 612. There are four curved rubber limiting blocks 613, which are respectively tightly attached to four copper mesh screens. The surface of the shielding layer 3 is fixedly connected by an upper arc-shaped rubber sheet 611 and a lower arc-shaped rubber sheet 612 through an adhesive strip 614. The arc-shaped rubber support block 603 and the arc-shaped elastic metal block 604 provide support and buffer for the middle of the gap between adjacent cores 1. When the arc-shaped elastic metal block 604 is subjected to pressure, it can push the arc-shaped rubber support block 603 back to its original position through its own elastic recovery ability. This plays a role in supporting and shaping the cable as a whole, preventing the cable from deforming under pressure and causing the cores 1 to shift and affect each other. At the same time, the arc-shaped isolation block 608 and the reset spring metal sheet 609 work together to support and protect the outer side of the core 1. When the core 1 is subjected to external pressure in the cable, it rebounds and recovers. The compression deformation also buffers the pressure, thereby reducing the damage to the core 1 and protecting it. The adhesive strip 614 is used to adhere and fix the upper and lower curved rubber sheets 611 and 612, so that the upper and lower curved rubber sheets 611 and 612 surround the outside of the four cores 1. The curved rubber limiting block 613 is close to the surface of the copper mesh shielding layer 3 to limit and support the core 1, preventing the core 1 from shifting and deforming due to pressure during cable production.

[0024] The working principle and usage process of this invention are as follows: First, during cable production, the positioning rubber rod 601 serves as the center position around which the four cores 1 are surrounded. The arc-shaped insulating block 608, which is in close contact with the surface of the copper mesh shielding layer 3, provides positioning and support for the cores 1. The positioning block 606 is embedded inside the mounting groove 602, so that the arc-shaped elastic metal block 604 and the arc-shaped rubber support block 603 are located at the midpoint of the distance between two adjacent cores 1. As the cable continues to the subsequent production process, the upper arc-shaped rubber sheet 611 and the lower arc-shaped rubber sheet 612 are used to surround the four cores 1. On the side, the adhesive strip 614 connects the ends of the upper and lower curved rubber sheets 611 and 612 to each other. The four curved rubber limiting blocks 613 on the inner walls of the upper and lower curved rubber sheets 611 and 612 are respectively attached to the surfaces of the four copper mesh shielding layers 3, and support and position the core 1 from two directions with the curved isolation block 608, so that the core 1 will not shift or tilt. The protective layer 4 is sleeved on the surfaces of the upper and lower curved rubber sheets 611 and 612, and the fiber rope filling layer 7 fills the gaps inside the protective layer 4. During cable use, if it is squeezed by foreign objects in the external environment, different protections are generated according to the direction and position of the squeeze. If the squeeze is directed towards the core 1, the core 1 will be compressed and displaced inward. The reset spring metal sheet 609 is compressed and deformed. When the squeeze stops, the elastic reset ability of the reset spring metal sheet 609 will cause it to unfold outward, thereby pushing the core 1 outward and making the core 1 return to its original position inside the cable. The shaping support airbag 610 is located between the two reset spring metal sheets 609 and plays a shaping support role for the reset spring metal sheet 609, preventing the reset spring metal sheet 609 from deforming excessively. If the cable is compressed at the distance between adjacent cores 1, the arc-shaped rubber support block 603 and the arc-shaped elastic metal block 604 will buffer the compression. When the arc-shaped elastic metal block 604 is deformed by the pressure and the compression stops, the self-recovery ability of the arc-shaped elastic metal block 604 and the support rubber block 607 will push the arc-shaped rubber support block 603 outward to return it to its original position, which plays a role in resetting and shaping the cable as a whole. The arc-shaped elastic metal block 604 is spliced ​​with the positioning rubber rod 601 through the support rubber strip 605 and the positioning block 606, which plays a certain positioning and connection role, so that it will not easily tilt. If the cable is in a high-temperature environment or is in an energy storage system for a long time, the continuous and high-power transmission of electrical energy by the energy storage system can easily cause the core 1 inside the cable to generate heat for a long time. The heat will accumulate and cannot be safely discharged. The staff takes two left arc-shaped shunt hollow blocks 501 and two right arc-shaped shunt hollow blocks 502 and attaches them tightly to the two ends of the protective layer 4. They are spliced ​​together. The connecting tube 510 at one end of a left arc-shaped shunt hollow block 501 is inserted into the inside of a right arc-shaped shunt hollow block 502. The sealing gasket 511 seals the splicing position. The arc-shaped fitting guide flat tube 503 is attached tightly to the surface of the protective layer 4. The splicing blocks 516 are attached to each other and the locking bolts 517 are tightened to lock and fix it. Open the liquid control valve 506 and close the gas control valve 512. Under the action of the infusion pump 509, the cooling water inside the external storage tank 508 can be injected into the left arc-shaped split hollow block 501 through the infusion pipe 507. The cooling water flows through the arc-shaped fitting guide flat tube 503 to the inside of the other left arc-shaped split hollow block 501, and then flows into the inside of the right arc-shaped split hollow block 502 through the connecting tube 510. After passing through the arc-shaped fitting guide flat tube 503, it flows into the inside of the other right arc-shaped split hollow block 502. Then, the water flows back to the external storage tank 508 through the circulation pipe 519, realizing the circulation of water flow. When the cooling water flows inside the arc-shaped guide flat pipe 503, it absorbs the heat generated by the cable core 1, so that the heat is mixed in the water flow and finally discharged, which plays a role in cooling the cable. Water has a large specific heat capacity and high heat absorption efficiency. Moreover, the water flow surrounds the outer layer of the protective layer 4, which plays a role in cooling and isolating the inside of the cable, preventing heat from the high temperature environment outside from entering the inside of the cable and affecting the normal operation of the core 1. After a period of cooling, the cooling water absorbs some heat, and the temperature rises. The internal temperature of the cable is at a suitable level. The infusion pump 509 and the liquid control valve 506 are both closed, and the water flow is no longer circulated. However, some of the water flow is still inside the left arc-shaped splitting hollow block 501, the right arc-shaped splitting hollow block 502, and the arc-shaped fitting guide tube 503. The gas control valve 512 is opened, and the micro air pump 514 generates airflow, which is injected into the left arc-shaped splitting hollow block 501, the right arc-shaped splitting hollow block 502, and the arc-shaped fitting guide tube 503. This squeezes and pushes the remaining cooling water, causing it to enter the external liquid storage tank 508 for cooling. The airflow generated during gas pushing will be discharged through the gas one-way valve 515. When cooling is required again, the infusion pump 509 is used to repeat the above operation to allow the water flow to absorb heat again. In this application, the water can be replaced with other coolants as required.

[0025] 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. A multi-core energy storage aluminum alloy medium-voltage cable, comprising four cores (1), characterized in that: The surfaces of the four cores (1) are all covered with rubber insulation layers (2) by extrusion, and the surfaces of the four rubber insulation layers (2) are all covered with copper mesh shielding layers (3). The outer sides of the four copper mesh shielding layers (3) are covered with protective layers (4), and the surface of the protective layers (4) is provided with a spliced ​​circulating high temperature resistant mechanism (5). The spliced ​​circulating high-temperature resistant mechanism (5) includes a left arc-shaped diversion hollow block (501). Left arc-shaped diversion hollow blocks (501) are attached to both ends of the surface of the protective layer (4), and right arc-shaped diversion hollow blocks (502) are attached to both ends of the surface of the protective layer (4) at one side of the left arc-shaped diversion hollow blocks (501). Arc-shaped attached flow guide flat tubes (503) are installed at equal intervals between the ends of the two left arc-shaped diversion hollow blocks (501) and between the ends of the two right arc-shaped diversion hollow blocks (502). A connector (504) is connected to the bottom end of the left arc-shaped diversion hollow block (501). A three-way connector (505) is installed at the bottom of the connector (504). A liquid control valve (506) is installed at the bottom end of the three-way connector (505). An infusion pipeline (507) is connected to the bottom end of the liquid control valve (506). An external storage tank (508) is installed at the bottom of the infusion pipeline (507). An infusion pump (509) is installed inside the external storage tank (508). One end of one of the left arc-shaped shunt hollow blocks (501) is connected to a connecting tube (510); A gas control valve (512) is installed at one end of the three-way connector (505), and a gas transmission pipe (513) is connected to one end of the gas control valve (512). A micro air pump (514) is installed at one end of the top of the external liquid storage tank (508), and a gas one-way valve (515) is installed at the top of the external liquid storage tank (508). A circulation pipe (519) is connected to the bottom end of one of the right arc-shaped diversion hollow blocks (502). The protective layer (4) is provided with a reset and rebound protection mechanism (6) in the middle of its interior. The reset and rebound protection mechanism (6) includes a positioning rubber rod (601). A positioning rubber rod (601) is installed in the middle of the inner part of the protective layer (4). The surface of the positioning rubber rod (601) is provided with mounting grooves (602) at equal intervals. Arc-shaped rubber support blocks (603) are installed at equal intervals along the circumferential direction on the inner side of the protective layer (4). Arc-shaped elastic metal blocks (604) are symmetrically connected to the bottom end of the arc-shaped rubber support blocks (603). A support rubber strip (605) is connected to the bottom end of the two arc-shaped elastic metal blocks (604). A support rubber block (607) is embedded in the interior between the two arc-shaped elastic metal blocks (604). A positioning block (606) is connected at equal intervals to the bottom end of the support rubber strip (605). The positioning block (606) is movably embedded inside the mounting groove (602), and the arc-shaped rubber support block (603) and the arc-shaped elastic metal block (604) are located in the middle between two adjacent cores (1); An arc-shaped isolation block (608) is installed inside the protective layer (4) at one side of the core (1). A reset and rebound metal sheet (609) is symmetrically connected to the bottom end of the arc-shaped isolation block (608). A shaping support airbag (610) is embedded between the two reset and rebound metal sheets (609).

2. The multi-core energy storage aluminum alloy medium-voltage cable according to claim 1, characterized in that, The protective layer (4) is filled with a fiber rope filling layer (7), and a sealing gasket (511) is fixedly bonded to the surface of the connecting tube (510). The arc-shaped fitting guide tube (503) is closely attached to the surface of the protective layer (4), and the bottom end of the infusion pipe (507) is connected to the infusion pump (509).

3. The multi-core energy storage aluminum alloy medium-voltage cable according to claim 1, characterized in that, One end of the right arc-shaped diverting hollow block (502) is provided with a round hole, and the connecting tube (510) is inserted into the interior of the right arc-shaped diverting hollow block (502) through the round hole.

4. A multi-core energy storage aluminum alloy medium-voltage cable according to claim 1, characterized in that, The top and bottom ends of the left arc-shaped diversion hollow block (501) and the right arc-shaped diversion hollow block (502) are connected to splicing blocks (516), and locking bolts (517) are installed in the middle of the splicing blocks (516). Limiting straps (518) are sleeved on the surface of the arc-shaped fitting guide flat tube (503).

5. A multi-core energy storage aluminum alloy medium-voltage cable according to claim 4, characterized in that, The gas delivery pipe (513) is connected to the output end of the micro air pump (514), and the bottom end of the circulation pipe (519) extends into the interior of the external storage tank (508).

6. A multi-core energy storage aluminum alloy medium-voltage cable according to claim 4, characterized in that, The left arc-shaped diversion hollow block (501) and the right arc-shaped diversion hollow block (502) are in contact with each other, and the left arc-shaped diversion hollow block (501) and the right arc-shaped diversion hollow block (502) are fixedly connected by locking bolts (517).

7. A multi-core energy storage aluminum alloy medium-voltage cable according to claim 1, characterized in that, The top of the inner wall of the protective layer (4) is fitted with an upper wrapped arc-shaped rubber sheet (611), and the bottom of the inner wall of the protective layer (4) is fitted with a lower wrapped arc-shaped rubber sheet (612). The interiors of the upper wrapped arc-shaped rubber sheet (611) and the lower wrapped arc-shaped rubber sheet (612) are symmetrically connected with arc-shaped rubber limiting blocks (613). Adhesive strips (614) are bonded to both ends of the top of the upper wrapped arc-shaped rubber sheet (611) and the top of the lower wrapped arc-shaped rubber sheet (612).

8. A multi-core energy storage aluminum alloy medium-voltage cable according to claim 7, characterized in that, The number of the arc-shaped isolation blocks (608) is four, and the four arc-shaped isolation blocks (608) are respectively attached to the surface of the four copper mesh shielding layers (3). The reset spring metal sheet (609) is connected to the positioning rubber rod (601).

9. A multi-core energy storage aluminum alloy medium-voltage cable according to claim 7, characterized in that, The number of the arc-shaped rubber limiting blocks (613) is four. The four arc-shaped rubber limiting blocks (613) are respectively attached to the surface of the four copper mesh shielding layers (3). The upper wrapped arc-shaped rubber sheet (611) and the lower wrapped arc-shaped rubber sheet (612) are bonded and fixedly connected by adhesive strips (614).

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