Cold-resistant crosslinked polyethylene new energy cable

Abstract

The invention relates to the technical field of new energy cables, and provides a cold-resistant crosslinked polyethylene new energy cable which comprises a new energy cable body with a plurality of metal conductors and a sealing sleeve, the outer side of each metal conductor is sleeved with a crosslinked polyethylene insulating layer, and the sealing sleeve is arranged on the outer side of the new energy cable body in a sleeving mode. The sealing sleeve is close to one end, used for being connected with a charging head, of the new energy cable body, a plurality of annular meshing sleeves are arranged in the sealing sleeve, the annular meshing sleeves are connected to the outer side of the new energy cable body in a clamped mode, and a plurality of connection heat dissipation structures are arranged between the close ends of the two annular meshing sleeves; one side of the new energy cable body is provided with a gas circulation assembly, and the gas circulation assembly is communicated with the plurality of annular engagement sleeves, and drives the high-temperature gas to circulate and be discharged among the plurality of annular engagement sleeves. According to the technical scheme, the problem that a new energy cable in the prior art is inconvenient to use in cold outdoor weather is solved.

Description

Technical Field

[0001] This invention relates to the field of new energy cable technology, specifically to a cold-resistant cross-linked polyethylene new energy cable. Background Technology

[0002] New energy cables refer to power cables specifically designed for use with solar photovoltaic energy, wind energy, energy storage, new energy vehicles, and charging equipment. Because the application environments of new energy cables are relatively harsher than those of ordinary power cables, they often need to be used in high or low temperature environments. For example, when using new energy cables in conjunction with charging pile equipment, they are often used outdoors. One end of the new energy cable is electrically connected to the charging pile equipment, and the other end is connected to the charging head. This ensures an electrical connection between the new energy vehicle and the charging pile equipment to replenish the vehicle's power. However, this method of using new energy cables requires them to be adapted to outdoor ambient temperatures.

[0003] When new energy cables are used outdoors, the outdoor environment presents temperature differences, such as high or low temperatures. In normal high-temperature environments, the heat resistance of new energy cables is effectively guaranteed because cross-linked polyethylene is commonly used as the insulation layer for the metal conductor in existing technologies. However, when new energy cables are used in cold weather, the lower outdoor temperature can easily cause the cable sheath to become brittle and make the cable difficult to bend. In addition, the conductor resistance is higher when using new energy cables in cold weather, which affects the charging efficiency of the new energy cables and can easily lead to safety hazards. Summary of the Invention

[0004] This invention proposes a cold-resistant cross-linked polyethylene new energy cable, which solves the problem that existing new energy cables are not convenient to use in cold outdoor weather conditions.

[0005] The technical solution of the present invention is as follows: A cold-resistant cross-linked polyethylene new energy cable, comprising a new energy cable body having multiple metal conductors, wherein a cross-linked polyethylene insulation layer is sleeved on the outside of the metal conductors, and further comprising: A sealing sleeve is fitted over the outside of the new energy cable body, and the sealing sleeve is close to the end of the new energy cable body used for connection with the charging head. The sealing sleeve is provided with multiple annular engagement sleeves, which are snapped onto the outside of the new energy cable body. Multiple connecting heat dissipation structures are provided between the near ends of two annular engagement sleeves. A gas circulation component is provided on one side of the new energy cable body, and the gas circulation component is connected to the multiple annular engagement sleeves, which drives high-temperature gas to circulate and be discharged between the multiple annular engagement sleeves. The connecting heat dissipation structures are used to dissipate the heat of the high-temperature gas inside the annular engagement sleeves. The gas inside the sealing sleeve absorbs the heat of the connecting heat dissipation structures, thus keeping the new energy cable body warm. A hollow ferrule is disposed between multiple metal conductors and also cooperates with the gas circulation assembly. Multiple telescopic insulation structures are provided inside the hollow ferrule, and each telescopic insulation structure corresponds to one of the metal conductors. The temperature of the high-temperature gas flowing inside the hollow ferrule is used to insulate the metal conductors.

[0006] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable, wherein an annular fitting groove is provided on the side of the sealing sleeve away from the hollow ferrule, and an annular sealing strip is provided in the annular fitting groove to form a sealed cavity inside the sealing sleeve.

[0007] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable. The side wall of the sealing sleeve is provided with a rectangular slot for installing the annular engagement sleeve into the sealing sleeve. An arc-shaped cover is hinged in the rectangular slot, and a sealing gasket is provided between the arc-shaped cover and the rectangular slot to seal the rectangular slot.

[0008] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable, wherein the annular engagement sleeve has a deformation groove on the inner arc surface of the middle part, and the annular engagement sleeve deforms along the middle part of the deformation groove so that the annular engagement sleeve is fitted on the outside of the new energy cable body.

[0009] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable. The connection and heat dissipation structure includes a rotating seat and an arc-shaped heat dissipation strip. The two adjacent annular meshing sleeves are respectively provided with a rotating seat containing a hollow rotating shaft at their adjacent ends. The arc-shaped heat dissipation strip is fixedly connected to the hollow rotating shaft. The two adjacent sides of the two corresponding arc-shaped heat dissipation strips are rotatably connected by a hollow connecting shaft.

[0010] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable. The gas circulation assembly includes an inlet pipe, an outlet pipe, a venting interface, and a connecting pipe. The inlet pipe and the outlet pipe are both disposed on one side of the new energy cable body. The venting interface is connected to both the upper and lower sides of the annular engagement sleeve. The venting interface is connected to the inlet pipe or the outlet pipe, respectively. The connecting pipe is connected to the side of the inlet pipe and the outlet pipe near the hollow sleeve. The two connecting pipes are connected to the upper and lower sides of the hollow sleeve, respectively.

[0011] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable, wherein a partition plate is fixedly connected to the middle of the hollow ferrule, the partition plate dividing the hollow ferrule into a U-shaped flow channel, and the U-shaped flow channel cooperates with two connecting air pipes.

[0012] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable. The telescopic insulation structure includes a telescopic clamp, a snap-fit ​​ring, and a spiral metal wire. One end of the telescopic clamp is connected to the side wall of the hollow snap-fit ​​ring. The inner arc surface of the telescopic clamp is in contact with the new energy cable body. The snap-fit ​​ring is provided inside the telescopic clamp to seal the interior of the telescopic clamp. The snap-fit ​​ring heats up after contacting high-temperature gas. The spiral metal wire is spirally arranged inside the telescopic clamp, and one end of the spiral metal wire passes through the snap-fit ​​ring.

[0013] At least one embodiment of the present invention provides a cold-resistant cross-linked polyethylene new energy cable, wherein an annular friction strip is provided on the inner arc surface of the telescopic clamp away from the hollow ferrule, and the annular friction strip is in contact with the outer wall of the new energy cable body to determine the telescopic length of the telescopic clamp.

[0014] The working principle and beneficial effects of this invention are as follows: In this invention, when the new energy cable body needs to be used outdoors in cold conditions, since parking lots in the prior art generally have multiple charging stations, the use of the new energy cable body is relatively concentrated. Therefore, a centralized hot air station can be set up to cooperate with the gas circulation component to heat and transport the gas. After the sealing sleeve is put on the new energy cable body, multiple annular meshing sleeves connected together are installed in the sealing sleeve. By adjusting the heat dissipation structure between two adjacent annular meshing sleeves, multiple annular meshing sleeves can be adapted to sealing sleeves of different lengths. Then, high-temperature gas is allowed to circulate in each annular meshing sleeve. The heat dissipation structure is used to dissipate the heat of the high-temperature gas in the annular meshing sleeve. The gas in the sealing sleeve absorbs the heat of the heat dissipation structure, covering and insulating the outside of the new energy cable body, avoiding the problems of embrittlement and hardening of the new energy cable body, and ensuring normal handling and use of the new energy cable body.

[0015] In this invention, during actual use, multiple metal conductors extend from the body of the new energy cable and make electrical connections with the terminals inside the charging head. In order to keep the metal conductors at a suitable charging temperature, a telescopic clamp can be placed on the area where the metal conductors are still covered by the cross-linked polyethylene insulation layer. During the flow of high-temperature gas in the hollow clamp, the spiral metal wire can be heated, thereby increasing the air temperature inside the telescopic clamp and keeping the metal conductors warm, thus ensuring the charging efficiency of the metal conductors in cold weather. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the metal conductor, the new energy cable body, and the cross-linked polyethylene insulation layer in this invention; Figure 4 This is a schematic diagram of the sealing sleeve, annular meshing sleeve, hollow ferrule, connecting heat dissipation structure and gas circulation assembly in this invention. Figure 5 This is a partial cross-sectional schematic diagram of the annular meshing sleeve, hollow ferrule, connecting heat dissipation structure and gas circulation assembly in this invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of point A in the middle; Figure 7 This is a partial cross-sectional structural diagram showing the cooperation of the telescopic clamp, snap ring sleeve, spiral metal wire, and annular friction strip in this invention.

[0018] In the diagram: 1. Metal conductor; 2. New energy cable body; 3. Cross-linked polyethylene insulation layer; 4. Sealing sleeve; 5. Annular meshing sleeve; 6. Hollow ferrule; 7. Annular fitting groove; 8. Annular sealing strip; 9. Sealing chamber; 10. Rectangular slot; 11. Arc-shaped cover; 12. Sealing gasket; 13. Deformation groove; 14. Rotary seat; 15. Hollow rotating shaft; 16. Arc-shaped heat dissipation strip; 17. Hollow connecting shaft; 18. Air inlet pipe; 19. Air outlet pipe; 20. Vent interface; 21. Connecting air pipe; 22. Partition plate; 23. U-shaped flow channel; 24. Telescopic clamp; 25. Snap-fit ​​ring sleeve; 26. Spiral metal wire; 27. Annular friction strip. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 3 As shown, this embodiment proposes a cold-resistant cross-linked polyethylene new energy cable, including a new energy cable body 2 with multiple metal conductors 1. The metal conductors 1 are covered with a cross-linked polyethylene insulation layer 3. The new energy cable body 2 is one of the power cables commonly used in the prior art to be used in conjunction with charging piles and charging heads. The new energy cable body 2 is composed of metal conductors 1, cross-linked polyethylene insulation layer 3, shielding layer, wrapping layer, armor layer and sheath, and is manufactured using cable production processes.

[0021] like Figures 1 to 6 As shown, in this embodiment, a sealing sleeve 4 is also included. The sealing sleeve 4 is sleeved on the outside of the new energy cable body 2, and the sealing sleeve 4 is close to the end of the new energy cable body 2 used for connection with the charging head. An annular fitting groove 7 is provided on the side of the sealing sleeve 4 away from the hollow ferrule 6. An annular sealing strip 8 is provided in the annular fitting groove 7 to form a sealed chamber 9 inside the sealing sleeve 4. When the sealing sleeve 4 needs to be installed, one side of the sealing sleeve 4 is first passed through the sheath side of the new energy cable body 2. An expansion ring is provided on the side of the sealing sleeve 4 away from the annular fitting groove 7. The expansion ring can abut against the outer wall of the sheath, so that the sealing sleeve 4 is fixed on the outside of the sheath and does not affect the sealing of the sealed chamber 9. After the sealing sleeve 4 is sealed, the annular sealing strip 8 is embedded into the annular fitting groove 7 to completely seal the sealed chamber 9.

[0022] Furthermore, the sealing sleeve 4 is provided with multiple annular engagement sleeves 5, which are snapped onto the outside of the new energy cable body 2. A rectangular slot 10 is provided on the side wall of the sealing sleeve 4 for installing the annular engagement sleeves 5 into the sealing sleeve 4. An arc-shaped cap 11 is hinged within the rectangular slot 10, and a sealing gasket 12 is provided between the arc-shaped cap 11 and the rectangular slot 10 to seal the rectangular slot 10. After multiple annular engagement sleeves 5 need to be installed into the sealing sleeve 4, one side of the arc-shaped cap 11 is hinged to the sealing sleeve 4 via a hinge. The arc-shaped cover 11 is rotated along the center point of the hinge, and the sealing gasket 12 is removed from the sealing sleeve 4. Then, multiple annular engagement sleeves 5, which are connected together by the heat dissipation structure, are moved into the sealing sleeve 4, so that the annular engagement sleeves 5 fit against the outer wall of the new energy cable body 2, and the ventilation interface 20 is kept in communication with the annular engagement sleeves 5. The arc-shaped cover 11 is reset along the center point of the hinge into the rectangular slot 10, so that the sealing gasket 12 enters into the rectangular slot 10, and the sealing gasket 12 is used to seal the gap between the rectangular slot 10 and the arc-shaped cover 11.

[0023] Furthermore, the annular engagement sleeve 5 has a deformation groove 13 on its inner arc surface in the middle. The annular engagement sleeve 5 deforms along the middle of the deformation groove 13, so that the annular engagement sleeve 5 is fitted on the outside of the new energy cable body 2. The annular engagement sleeve 5 can deform along the middle area of ​​the deformation groove 13, so that the annular engagement sleeve 5 can adapt to the new energy cable body 2 of similar size, and generate a pressing force in the direction of the inner arc surface, so that the annular engagement sleeve 5 is fully fitted with the outer wall of the new energy cable body 2.

[0024] like Figures 1 to 6As shown, in this embodiment, multiple connecting heat dissipation structures are provided between the adjacent ends of the two annular meshing sleeves 5. The connecting heat dissipation structures are used to dissipate the heat of the high-temperature gas inside the annular meshing sleeves 5. The gas inside the sealing sleeve 4 absorbs the heat of the connecting heat dissipation structures, thus insulating the new energy cable body 2. The connecting heat dissipation structure includes a rotating seat 14 and an arc-shaped heat dissipation strip 16. The adjacent ends of the two adjacent annular meshing sleeves 5 are respectively provided with a rotating seat 14 containing a hollow rotating shaft 15. An arc-shaped heat dissipation strip 16 is fixedly connected to the hollow rotating shaft 15. The adjacent sides of the two corresponding arc-shaped heat dissipation strips 16 are rotatably connected by a hollow connecting shaft 17. By causing the arc-shaped heat dissipation strips 16 to move along the hollow shaft 17, the heat dissipation structure can be rotatably connected to the adjacent sides of the two corresponding arc-shaped heat dissipation strips 16. Rotating the center point of the hollow shaft 15 and the hollow connecting shaft 17 can adjust the rotation angle between the two arc-shaped heat dissipation strips 16, thereby adjusting the coverage length between multiple annular meshing sleeves 5 to accommodate sealing sleeves 4 of different lengths. When high-temperature gas flows inside the annular meshing sleeve 5, the hollow shaft 15, the arc-shaped heat dissipation strips 16, and the hollow connecting shaft 17 all have good heat dissipation effects, enabling the gas inside the sealing sleeve 4 to absorb heat as quickly as possible, thus insulating the area where the new energy cable body 2 extends outdoors. The inside of the sealing sleeve 4 remains sealed, reducing heat loss and effectively improving the insulation effect of the new energy cable body 2, as well as reducing resource consumption during the insulation process.

[0025] like Figures 1 to 6 As shown, in this embodiment, a gas circulation component is provided on one side of the new energy cable body 2. The gas circulation component is connected to multiple annular meshing sleeves 5, driving high-temperature gas to circulate and discharge between the multiple annular meshing sleeves 5. The gas circulation component includes an inlet pipe 18, an outlet pipe 19, a venting interface 20, and a connecting pipe 21. The inlet pipe 18 and the outlet pipe 19 are both located on one side of the new energy cable body 2. Venting interfaces 20 are connected to both the upper and lower sides of the annular meshing sleeves 5. The venting interfaces 20 are respectively connected to the inlet pipe 18 or the outlet pipe 19. The inlet pipe 18 and the outlet pipe 19 are each connected to a connecting pipe 21 on the side near the hollow sleeve 6. The two connecting pipes 21 are respectively connected to the upper and lower sides of the hollow sleeve 6. Side connection: Since a large number of charging stations are often installed in parking lots, a hot air station that can generate high-temperature gas can be installed in the vacant area of ​​the parking lot. The hot air station cooperates with the air inlet pipe 18 and the air outlet pipe 19 to deliver high-temperature gas into the air inlet pipe 18, and then the cooled gas is recycled back into the hot air station through the air outlet pipe 19. The air inlet 20 can realize the entry and exit of high-temperature gas, increasing the surface temperature of the annular meshing sleeve 5. The connecting air pipe 21 can allow the high-temperature gas to circulate in the U-shaped flow channel 23 in the hollow ferrule 6, and then be discharged into the air outlet pipe 19 through the connecting air pipe 21, completing the gas circulation operation between the annular meshing sleeve 5 and the hollow ferrule 6.

[0026] Furthermore, a hollow ferrule 6 is disposed between multiple metal conductors 1. The hollow ferrule 6 also cooperates with the gas circulation assembly. A partition plate 22 is fixedly connected to the middle of the hollow ferrule 6. The partition plate 22 divides the hollow ferrule 6 into a U-shaped flow channel 23. The U-shaped flow channel 23 cooperates with two connecting gas pipes 21. By setting the U-shaped flow channel 23, the flow direction of high-temperature gas is controlled, so that the high-temperature gas can maintain gas circulation within the hollow ferrule 6.

[0027] like Figures 1 to 7 As shown, in this embodiment, the hollow sleeve 6 is provided with multiple telescopic insulation structures, each corresponding to a metal conductor 1. The high-temperature gas flowing inside the hollow sleeve 6 insulates the metal conductor 1. Each telescopic insulation structure includes a telescopic clamp 24, a snap-fit ​​ring 25, and a spiral metal wire 26. One end of the telescopic clamp 24 is connected to the side wall of the hollow sleeve 6, and the inner arc surface of the telescopic clamp 24 is in contact with the new energy cable body 2. A snap-fit ​​ring 25 is provided inside the telescopic clamp 24 to seal the interior of the telescopic clamp 24. After the snap-fit ​​ring 25 comes into contact with the high-temperature gas... As the temperature rises, the spiral metal wire 26 is spirally arranged inside the telescopic clamp 24, with one end of the spiral metal wire 26 passing through the snap ring sleeve 25. During the flow of high-temperature gas from the hollow snap ring sleeve 6, the high-temperature gas will drive the snap ring sleeve 25 and the spiral metal wire 26 to heat up, thereby heating the gas inside the telescopic clamp 24. The heated gas will then keep the cross-linked polyethylene insulation layer 3 and the metal conductor 1 warm. Because the cross-linked polyethylene insulation layer 3 has good heat resistance, the temperature brought by the telescopic clamp 24 to the cross-linked polyethylene insulation layer 3 will only further ensure the charging performance of the metal conductor 1.

[0028] Furthermore, an annular friction strip 27 is provided on the inner arc surface of the telescopic clamp 24 away from the hollow ferrule 6. The annular friction strip 27 is attached to the outer wall of the new energy cable body 2 and is used to determine the telescopic length of the telescopic clamp 24. The telescopic clamp 24 and the spiral metal wire 26 are extended so that the telescopic clamp 24 is attached to the hinge area between the cross-linked polyethylene insulation layer 3 and the metal conductor 1. The annular friction strip 27 is used to keep attached to the peeling port of the cross-linked polyethylene insulation layer 3 to determine the position of the telescopic clamp 24 on the cross-linked polyethylene insulation layer 3. It can also squeeze the cross-linked polyethylene insulation layer 3 to prevent gaps from appearing between the cross-linked polyethylene insulation layer 3 and the metal conductor 1.

[0029] The working principle of this cold-resistant cross-linked polyethylene new energy cable: After the sealing sleeve 4 is fitted onto the new energy cable body 2, multiple annular meshing sleeves 5 connected together are installed inside the sealing sleeve 4. By adjusting the heat dissipation structure between two adjacent annular meshing sleeves 5, multiple annular meshing sleeves 5 can be adapted to sealing sleeves 4 of different lengths. Then, high-temperature gas is allowed to circulate in each annular meshing sleeve 5. The heat dissipation structure is used to dissipate the heat of the high-temperature gas inside the annular meshing sleeve 5. The gas inside the sealing sleeve 4 absorbs the heat from the heat dissipation structure and covers and insulates the outside of the new energy cable body 2. At the same time, the telescopic clamp 24 can be fitted onto the area where the metal conductor 1 is still covered by the cross-linked polyethylene insulation layer 3, so that the high-temperature gas can heat the spiral metal wire 26 during the flow of the hollow ferrule 6, thereby increasing the temperature of the air inside the telescopic clamp 24 and keeping the metal conductor 1 warm.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 cold-resistant cross-linked polyethylene new energy cable, comprising a new energy cable body (2) having multiple metal conductors (1), wherein a cross-linked polyethylene insulation layer (3) is sleeved on the outside of the metal conductors (1), characterized in that, Also includes: A sealing sleeve (4) is sleeved on the outside of the new energy cable body (2) and the sealing sleeve (4) is close to the end of the new energy cable body (2) used to connect with the charging head. Multiple annular meshing sleeves (5) are provided inside the sealing sleeve (4). The annular meshing sleeves (5) are snapped onto the outside of the new energy cable body (2). Multiple connecting heat dissipation structures are provided between the near ends of two annular meshing sleeves (5). A gas circulation component is provided on one side of the new energy cable body (2). The gas circulation component is connected to multiple annular meshing sleeves (5) to drive high-temperature gas to flow and be discharged between multiple annular meshing sleeves (5). The connecting heat dissipation structure is used to dissipate the heat of the high-temperature gas inside the annular meshing sleeves (5). The gas inside the sealing sleeve (4) absorbs the heat of the connecting heat dissipation structure and keeps the new energy cable body (2) warm. A hollow sleeve (6) is disposed between multiple metal conductors (1). The hollow sleeve (6) also cooperates with the gas circulation assembly. Multiple telescopic heat-insulating structures are provided inside the hollow sleeve (6). The telescopic heat-insulating structures correspond one-to-one with the metal conductors (1). The temperature of the high-temperature gas flowing inside the hollow sleeve (6) is used to insulate the metal conductors (1).

2. The cold-resistant cross-linked polyethylene new energy cable according to claim 1, characterized in that, The sealing sleeve (4) has an annular fitting groove (7) on the side away from the hollow ferrule (6), and an annular sealing strip (8) is provided in the annular fitting groove (7) to form a sealed chamber (9) inside the sealing sleeve (4).

3. The cold-resistant cross-linked polyethylene new energy cable according to claim 2, characterized in that, The sealing sleeve (4) has a rectangular slot (10) on its side wall for installing the annular engagement sleeve (5) into the sealing sleeve (4). An arc-shaped cover (11) is hinged in the rectangular slot (10), and a sealing gasket (12) is provided between the arc-shaped cover (11) and the rectangular slot (10) to seal the rectangular slot (10).

4. The cold-resistant cross-linked polyethylene new energy cable according to claim 3, characterized in that, The annular engagement sleeve (5) has a deformation groove (13) on its inner arc surface in the middle. The annular engagement sleeve (5) deforms along the middle of the deformation groove (13) so that the annular engagement sleeve (5) is fitted on the outside of the new energy cable body (2).

5. The cold-resistant cross-linked polyethylene new energy cable according to claim 4, characterized in that, The connection heat dissipation structure includes: Rotary seat (14), with one end of each of the two adjacent annular meshing sleeves (5) having a corresponding rotary seat (14) containing a hollow rotating shaft (15). Arc-shaped heat dissipation strip (16), the arc-shaped heat dissipation strip (16) is fixedly connected to the hollow rotating shaft (15), and the two corresponding arc-shaped heat dissipation strips (16) are rotatably connected to each other on their adjacent sides through a hollow connecting shaft (17).

6. The cold-resistant cross-linked polyethylene new energy cable according to claim 5, characterized in that, The gas circulation assembly includes: An air inlet pipe (18) and an air outlet pipe (19) are provided on one side of the new energy cable body (2); Ventilation port (20), the upper and lower sides of the annular meshing sleeve (5) are connected to the ventilation port (20), and the ventilation port (20) is connected to the air inlet pipe (18) or the air outlet pipe (19) respectively. The air inlet pipe (18) and the air outlet pipe (19) are connected to the air inlet pipe (21) on the side of the hollow sleeve (6), and the two air inlet pipes (21) are connected to the upper and lower sides of the hollow sleeve (6) respectively.

7. The cold-resistant cross-linked polyethylene new energy cable according to claim 6, characterized in that, A partition plate (22) is fixedly connected to the middle of the hollow sleeve (6). The partition plate (22) divides the hollow sleeve (6) into a U-shaped flow channel (23). The U-shaped flow channel (23) cooperates with the two connecting air pipes (21).

8. The cold-resistant cross-linked polyethylene new energy cable according to claim 7, characterized in that, The telescopic insulation structure includes: Telescopic clamp (24), one end of which is connected to the side wall of the hollow sleeve (6), and the inner arc surface of the telescopic clamp (24) is in contact with the new energy cable body (2); The snap ring sleeve (25) is provided inside the telescopic clamp (24) to seal the inside of the telescopic clamp (24). The snap ring sleeve (25) heats up after contacting high temperature gas. A spiral metal wire (26) is spirally arranged inside the telescopic clamp (24), and one end of the spiral metal wire (26) passes through the snap ring sleeve (25).

9. A cold-resistant cross-linked polyethylene new energy cable according to claim 8, characterized in that, The telescopic clamp (24) has an annular friction strip (27) on the inner arc surface away from the hollow sleeve (6). The annular friction strip (27) is attached to the outer wall of the new energy cable body (2) to determine the telescopic length of the telescopic clamp (24).

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