Forced heat dissipation crosslinked polyethylene insulated cable

Abstract

The invention provides a forced heat dissipation crosslinked polyethylene insulated cable, and belongs to the technical field of cables. The invention provides a forced heat dissipation cross-linked polyethylene insulated cable. The forced heat dissipation cross-linked polyethylene insulated cable comprises a plurality of cable cores, a filling layer, an inner protective layer, an outer shielding layer and an outer sheath, a plurality of forced heat dissipation units are arranged in the filling layer, and each forced heat dissipation unit comprises a ventilation pipe, a plurality of first wings and a plurality of second wings; the breather pipe is arranged in the center of the filling layer; the multiple first wings are arranged on the periphery of the ventilation pipe in the circumferential direction, electricity generation assemblies are arranged in the first wings, each electricity generation assembly comprises a refrigeration sheet, and the refrigeration sheets can generate electricity; the plurality of second wings are arranged on the periphery of the ventilation pipe in the circumferential direction, heat dissipation structures are arranged in the second wings, air guide devices are arranged on the heat dissipation structures, the air guide devices are electrically connected with the refrigeration sheets, cold air is supplied to the ventilation pipe during heat dissipation of the cable, and under continuous cold air supply, the heat dissipation effect of the center of the insulated cable is good, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] This invention belongs to the field of cable technology, and more specifically, relates to a forced heat dissipation cross-linked polyethylene insulated cable. Background Technology

[0002] Cross-linked polyethylene (XLPE) insulated cables are suitable for applications such as power distribution networks. They offer advantages unmatched by PVC insulated cables, using XLPE as the insulation layer. They are simple in structure, lightweight, heat-resistant, have high load capacity, do not melt, are resistant to chemical corrosion, and possess high mechanical strength. XLPE insulated cables are suitable for power distribution networks, industrial installations, or other applications requiring high-capacity power. They are used for fixed installation on AC 50Hz power transmission and distribution lines with a rated voltage of 6kV to 35kV, and their primary function is to transmit electrical energy.

[0003] During power transmission, the conductor generates a large amount of heat, which accumulates and severely affects the cable's lifespan. Currently, Chinese Patent Publication No. CN119446648B discloses a high-efficiency heat-dissipating cross-linked polyethylene insulated cable. This patent, by setting a heat dissipation mechanism within the cross-linked polyethylene insulated cable, efficiently and quickly conducts heat from the middle of the cable to the outer edge with the aid of airflow. It utilizes a main heat dissipation plate that is much larger than the heat dissipation surface in the middle of the cable for rapid heat dissipation, thus improving the cable's heat dissipation speed and efficiency. However, this patent still has shortcomings. During prolonged use, the heat dissipation efficiency of its mechanism remains insufficient, especially in hot summers, making it difficult to effectively dissipate heat from the cable. Summary of the Invention

[0004] The purpose of this invention is to provide a forced heat dissipation cross-linked polyethylene insulated cable to solve the technical problem of insufficient heat dissipation capacity of cross-linked polyethylene insulated cables in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A forced-heat dissipation cross-linked polyethylene insulated cable is provided, comprising a plurality of cable cores, a filling layer, an inner protective layer, an outer shielding layer, and an outer sheath; the plurality of cable cores are arranged circumferentially, an inner shielding layer is provided around the periphery of each cable core, and an insulation layer is provided around the periphery of the inner shielding layer; the filling layer is used to wrap the plurality of cable cores; the inner protective layer is disposed around the periphery of the filling layer; the outer shielding layer is disposed around the periphery of the inner protective layer; the outer sheath is disposed around the periphery of the outer shielding layer; wherein, a forced-heat dissipation device is provided within the filling layer, the forced-heat dissipation device comprising a plurality of forced-heat dissipation units, each forced-heat dissipation unit comprising a vent pipe, ... The system comprises several first wings and several second wings; a vent pipe is located at the center of the filling layer; several first wings are arranged circumferentially around the vent pipe, and each first wing has an internal power generation component, which includes a cooling chip with a cold surface and a hot surface. When a temperature difference is generated between the cold surface and the hot surface, the cooling chip can generate electricity; several second wings are arranged circumferentially around the vent pipe, and each second wing has an internal heat dissipation structure for dissipating heat from the gas. The heat dissipation structure is equipped with a gas guiding device, which is electrically connected to the cooling chip to guide more air into the heat dissipation structure to complete the heat dissipation.

[0006] In one possible implementation, based on the above technical solutions, the insulating layer is made of cross-linked polyethylene. A sensing air chamber is connected within the first wing via a first air passage and a second air passage. A mounting platform is provided on the bottom wall of the sensing air chamber. The power generation component is mounted on the mounting platform. The power generation component further includes a first heat sink and a second heat sink. One side of the first heat sink is mounted on the mounting platform, and the other side of the first heat sink is connected to the second heat sink via a heat insulation sheet. A receiving cavity is formed between the first heat sink and the second heat sink, and the cooling element is disposed within the receiving cavity.

[0007] In one possible implementation, based on the above technical solutions, a first rectangular frame protrusion is provided on one side of the first heat sink, and a second rectangular frame protrusion is provided on one side of the second heat sink. The first and second rectangular frame protrusions together clamp the cooling chip. A first heat-conducting cavity is formed between the first rectangular frame protrusion and the cooling chip, and a second heat-conducting cavity is formed between the second rectangular frame protrusion and the cooling chip. A heat-conducting agent is filled into the first and second heat-conducting cavities.

[0008] In one possible implementation, based on the above technical solutions, a first filling cavity is formed on one side of the first heat sink, and the first filling cavity is connected to the first heat conduction cavity through a first through hole. A second filling cavity is formed on one side of the second heat sink, and the second filling cavity is connected to the second heat conduction cavity through a second through hole. The first filling cavity and the second filling cavity are also filled with the thermal conductive agent. A sealing plate is installed on one side of the first heat sink and the second heat sink. The sealing plate is connected to a first push plate and a second push plate through an elastic element. The first push plate is disposed in the first filling cavity, and the second push plate is disposed in the second filling cavity.

[0009] In one possible implementation, based on the above technical solutions, the hot side of the cooling chip faces the axis of the vent pipe, and the cold side of the cooling chip faces in the opposite direction to the hot side of the cooling chip.

[0010] In one possible implementation, based on the above technical solutions, the heat dissipation structure includes a first air cavity, a second air cavity, a third through hole, and a fourth through hole. The first air cavity and the second air cavity are located inside the second wing and are connected. The third through hole connects the first air cavity and the vent pipe, and the fourth through hole connects the second air cavity and the vent pipe. An air baffle is provided between the first air cavity and the second air cavity, and an air groove is formed between the top of the air baffle and the top wall of the second wing. The first air cavity is provided with several layers of third heat sinks, and several ventilation holes are opened on the surface of the third heat sinks; the second air cavity is provided with a stepped heat sink, and the stepped heat sink is provided with a first stepped heat sink cavity, a second stepped heat sink cavity and an air outlet cavity. Several ventilation holes are also provided on the cavity walls of the first stepped heat sink cavity and the second stepped heat sink cavity. The air outlet cavity communicates with the fourth through hole.

[0011] In one possible implementation, based on the above technical solutions, the air guiding device includes a fan disposed within the third through hole. Air guiding components are also provided at the first air passage and the third through hole within the air pipe. Each air guiding component includes a positioning ring and a passive fan. The positioning ring is disposed within the air pipe, and several air guiding holes are formed on the side wall of the air pipe, communicating with the third through hole. The passive fan includes fan blades and a through plate, with the fan blades and the through plate fixedly connected. The through plate is rotatably mounted on a bracket inside the positioning ring, and air guiding holes are formed on the through plate. An air guiding hole is provided on the through plate every two fan blades, and adjacent fan blades and the through plate without air guiding holes form an air storage compartment.

[0012] In one possible implementation, based on the above technical solutions, one end of the ventilator is a first mounting part, which has a first arc groove and a second arc groove. The other end of the ventilator is a second mounting part, which has an arc protrusion and a first restraining sleeve. The first restraining sleeve contains a first fastening rope.

[0013] In one possible implementation, based on the above technical solutions, the vent pipe is provided with a first torsion section, which is located between the first wing and the second wing, and the first torsion section is capable of bending at a large angle; the upper side of the first torsion section of the vent pipe is provided with a second restraining sleeve, and the lower side is provided with a third restraining sleeve, the second restraining sleeve is provided with a second fastening rope, the third restraining sleeve is provided with a third fastening rope, and several connecting ropes are connected to the second fastening rope and the third fastening rope.

[0014] In one possible implementation, based on the above technical solutions, a second torsion section is connected between the sidewall of the first wing and the sidewall of the second wing. The power line of the cooling chip passes through the sidewall of the first wing, enters the second torsion section, passes through the sidewall of the second wing, and is connected to the air guiding device.

[0015] The beneficial effects of the forced heat dissipation cross-linked polyethylene insulated cable provided by this invention are as follows: Compared with the prior art, the insulated cable of this invention is provided with a forced heat dissipation device in the filling layer, which is composed of several forced heat dissipation units connected together. Each forced heat dissipation unit includes a vent pipe located at the center of the filling layer and several first fins and several second fins located on the vent pipe. When the cable needs heat dissipation, cold air is introduced into the vent pipe. A portion of the cold air first enters the first fins through the vent pipe, while another portion continues to flow along the vent pipe and exchanges heat with it. The first fins are equipped with cooling plates. The cold surface of the cooling plates contacts the cold air, thereby lowering the temperature of the cold surface. However, the hot surface of the cooling plates does not directly contact the cold air but remains at a distance from the hotter filling layer. Closer to the surface, the temperature of the filling layer is very high, so the temperature of the hot side of the cooling element is always higher than that of the cold side. As a result, the cooling element generates electrical energy and continuously supplies power to the air guiding device. The air guiding device then brings a portion of the air that has already exchanged heat with the air duct into the heat dissipation structure inside the second fin for heat dissipation. The remaining air, along with the cooled air, enters the next forced cooling unit to continue cooling the insulated cable. With the continuous supply of cold air, the heat dissipation effect at the center of the insulated cable is better, and the cold air first enters the first fin of each forced cooling unit, which also lowers the temperature of the first fin and has a certain cooling effect on the filling layer near the first fin, thereby having a certain cooling radiation effect on the filling layer in other parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 2 A schematic diagram of the forced heat dissipation unit of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the forced heat dissipation unit of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention from another perspective; Figure 4 A cross-sectional view of a forced heat dissipation unit for a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 A schematic diagram of the structure of a power generation component for a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 7 An exploded view of the power generation component of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 8 An exploded view from another perspective of the power generation component of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 9 A cross-sectional view of a power generation component of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 10 A schematic diagram of the air guide component of a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 11 A schematic diagram of the air duct of a forced heat dissipation cross-linked polyethylene insulated cable from another perspective, provided in an embodiment of the present invention; Figure 12 A schematic diagram of the structure of a stepped heat sink for a forced heat dissipation cross-linked polyethylene insulated cable provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the stepped heat sink of a forced heat dissipation cross-linked polyethylene insulated cable from another perspective, as provided in an embodiment of the present invention.

[0018] The labels for the attached figures are as follows: 100. Cable core; 110. Inner shielding layer; 120. Insulation layer; 200. Filling layer; 300. Inner protective layer; 400, Outer shielding layer; 500, Outer sheath; 600, Forced heat dissipation unit; 610, Vent pipe; 611. First arc groove; 612. Second arc groove; 613. Arc-shaped protrusion; 614. First restraint sleeve; 615. First fastening rope; 620. First wing; 621. First air passage; 622. Second air passage; 623. Sensing air chamber; 624. Mounting platform; 630. Second wing; 631. First air chamber; 6311, Third heat sink; 632, Second air chamber; 6321, Stepped heat sink; 6322, First-stage heat dissipation cavity; 6323, Second-stage heat dissipation cavity; 6324, Exhaust cavity; 633. Third through hole; 634. Fourth through hole; 635. Air baffle; 636. Air groove; 640. Power generation component; 641. Cooling element; 642. First heat sink; 6421. First rectangular frame protrusion; 6422, First heat-conducting cavity; 643, Second heat sink; 6431, Second rectangular frame protrusion; 6432, Second heat-conducting cavity; 644, Receiving cavity; 645, First filling cavity; 6451, First through hole; 646. Second injection chamber; 6461. Second through hole; 647. Sealing plate; 648. First push plate; 649. Second push plate; 650. Air guiding device; 660. Air guiding component; 661. Positioning ring; 6611, Air vent; 662, Passive fan; 6621, Fan blade; 6622, Through plate; 6623, Air vent; 6624. Gas storage compartment; 663. Support frame; 670. First torsion section; 671. Second restraint sleeve; 672. Third restraint loop; 673. Second fastening rope; 674. Third fastening rope; 675. Connecting rope; 680, Second torsion section; 690, Heat insulation sheet. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0021] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0025] The present invention will now describe a forced heat dissipation cross-linked polyethylene insulated cable.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the present invention provides a forced heat dissipation cross-linked polyethylene insulated cable, comprising a plurality of cable cores 100, a filling layer 200, an inner protective layer 300, an outer shielding layer 400, and an outer sheath 500; the plurality of cable cores 100 are arranged in a circumferential direction, and an inner shielding layer 110 is provided around the periphery of the cable cores 100, and an insulation layer 120 is provided around the periphery of the inner shielding layer 110; the filling layer 200 is used to wrap the plurality of cable cores 100; the inner protective layer 300 is disposed around the periphery of the filling layer 200; the outer shielding layer 400 is disposed around the periphery of the inner protective layer 300; the outer sheath 500 is disposed around the periphery of the outer shielding layer 400; wherein, a forced heat dissipation device is provided inside the filling layer 200, the forced heat dissipation device comprising a plurality of forced heat dissipation units 600, and the forced heat dissipation unit 600 comprising a vent pipe. 610. A plurality of first wings 620 and a plurality of second wings 630; the vent pipe 610 is located at the center of the filling layer 200; the plurality of first wings 620 are arranged circumferentially around the vent pipe 610, and the first wings 620 are provided with an electrical generation component 640, which includes a cooling chip 641. The cooling chip 641 is provided with a cold surface and a hot surface. When a temperature difference is generated between the cold surface and the hot surface, the cooling chip 641 can generate electricity; the plurality of second wings 630 are arranged circumferentially around the vent pipe 610, and the second wings 630 are provided with a heat dissipation structure for dissipating heat from the gas. The heat dissipation structure is provided with an air guiding device 650, which is electrically connected to the cooling chip 641 to guide more air into the heat dissipation structure to complete the heat dissipation.

[0027] This invention provides a forced heat dissipation cross-linked polyethylene insulated cable. Compared with the prior art, the insulated cable of this invention has a forced heat dissipation device installed in the filling layer 200, which is composed of several forced heat dissipation units 600 connected together. Each forced heat dissipation unit 600 includes a vent pipe 610 located at the center of the filling layer 200 and several first fins 620 and several second fins 630 installed on the vent pipe 610. When the cable needs heat dissipation, cold air is introduced into the vent pipe 610. A portion of the cold air first enters the first fins 620 through the vent pipe 610, while another portion continues to flow along the vent pipe 610 and exchanges heat with it. The first fins 620 are equipped with cooling plates 641. The cold surface of the cooling plate 641 contacts the cold air, thus lowering its temperature. However, the hot surface of the cooling plate 641 does not directly contact the cold air but is closer to the hotter filling layer 200. The temperature of the filling layer 200 is very high, so the temperature of the hot side of the cooling chip 641 is always higher than that of the cold side. As a result, the cooling chip 641 generates electrical energy and continuously supplies power to the air guiding device 650. The air guiding device 650 then brings a portion of the air that has completed heat exchange with the air duct 610 into the heat dissipation structure inside the second wing 630 for heat dissipation. The remaining air, along with the cooled air, enters the next forced heat dissipation unit 600 to continue heat dissipation of the insulated cable. Under the continuous supply of cold air, the heat dissipation effect at the center of the insulated cable is better, and the cold air first enters the first wing 620 of each forced heat dissipation unit 600, which also reduces the temperature of the first wing 620. This also has a certain cooling effect on the filling layer 200 near the first wing 620, thereby having a certain cooling radiation effect on the filling layer 200 in other parts, and thus improving the heat dissipation efficiency of the cable.

[0028] like Figure 4 , Figure 6 and Figure 7 In a specific embodiment of the forced heat dissipation cross-linked polyethylene insulated cable provided by the present invention, the insulation layer 120 is made of cross-linked polyethylene. A sensing air chamber 623 is connected within the first wing 620 via a first air passage 621 and a second air passage 622. A mounting platform 624 is provided on the bottom wall of the sensing air chamber 623. An electrical generation component 640 is mounted on the mounting platform 624. The electrical generation component 640 also includes a first heat sink 642 and a second heat sink 643. One side of the first heat sink 642 is mounted on the mounting platform 624, and the other side of the first heat sink 642 is connected to the second heat sink 643 via a heat insulation sheet 690. A receiving cavity 644 is formed between the first heat sink 642 and the second heat sink 643, and a cooling element 641 is disposed within the receiving cavity 644.

[0029] In one specific embodiment of the forced heat dissipation cross-linked polyethylene insulated cable provided by the present invention, the hot side of the cooling chip 641 faces the axis of the vent pipe 610, and the cold side of the cooling chip 641 faces the opposite direction to the hot side of the cooling chip 641.

[0030] It should be noted that when cold air is introduced through the vent pipe 610, the cold air first enters the sensing air chamber 623 through the first air passage 621. The cold surface of the cooling chip 641 comes into direct contact with the cold air, causing the temperature of the cold surface of the cooling chip 641 to drop. Meanwhile, the hot surface of the cooling chip 641 is positioned towards the axis of the vent pipe 610, resulting in a very close distance between it and the filling layer 200. Consequently, the temperature of the hot surface of the cooling chip 641 will be very high, thus generating electrical energy. Multiple cooling chips 641 can be installed in each sensing air chamber 623. The mounting platform 624 is made of aluminum alloy, which has a high thermal conductivity and good heat dissipation effect. The first heat sink 642 and the second heat sink 643 are both aluminum heat sinks. Before the insulated cable dissipates heat, the temperature inside the sensing air chamber 623 is very high. By placing the cooling element 641 between the first heat sink 642 and the second heat sink 643, after cold air is introduced into the sensing air chamber 623, the first heat sink 642 absorbs the heat from the cold surface, thereby cooling the cold surface. The second heat sink 643 absorbs the heat from the hot surface, thereby cooling the hot surface. However, because the hot surface is very close to the filling layer 200, the temperature of the hot surface is always higher than that of the cold surface, thus enabling the cooling element 641 to operate normally.

[0031] like Figure 7 , Figure 8 and Figure 9 As shown in the embodiment of the present invention, in a specific implementation of a forced heat dissipation cross-linked polyethylene insulated cable, a first rectangular frame protrusion 6421 is provided on one side of the first heat sink 642, and a second rectangular frame protrusion 6431 is provided on one side of the second heat sink 643. The first rectangular frame protrusion 6421 and the second rectangular frame protrusion 6431 together clamp the cooling plate 641. A first heat-conducting cavity 6422 is formed between the first rectangular frame protrusion 6421 and the cooling plate 641, and a second heat-conducting cavity 6432 is formed between the second rectangular frame protrusion 6431 and the cooling plate 641. A heat-conducting agent is filled into the first heat-conducting cavity 6422 and the second heat-conducting cavity 6432.

[0032] Furthermore, both the first rectangular frame protrusion 6421 and the second rectangular frame protrusion 6431 are made of rubber. When the cooling chip 641 is inserted, the first rectangular frame protrusion 6421 and the second rectangular frame protrusion 6431 can clamp the cooling chip 641 to prevent it from shifting. The thermal conductive agent is thermally conductive silicone grease. By injecting the thermal conductive agent into the first thermally conductive cavity 6422, the air gap between one side of the cooling chip 641 and the first heat sink 642 can be filled. By injecting the thermal conductive agent into the second thermally conductive cavity 6432, the air gap between the other side of the cooling chip 641 and the second heat sink 643 can be filled, thereby promoting the heat transfer efficiency on both sides of the cooling chip 641.

[0033] like Figure 8 and Figure 9 As shown in the embodiment of the present invention, in a specific implementation of a forced heat dissipation cross-linked polyethylene insulated cable, a first filling cavity 645 is provided on one side of the first heat sink 642, and the first filling cavity 645 is connected to the first heat conduction cavity 6422 through a first through hole 6451. A second filling cavity 646 is provided on one side of the second heat sink 643, and the second filling cavity 646 is connected to the second heat conduction cavity 6432 through a second through hole 6461. The first filling cavity 645 and the second filling cavity 646 are also filled with thermal conductive agent. A sealing plate 647 is installed on one side of the first heat sink 642 and the second heat sink 643. The sealing plate 647 is connected to a first push plate 648 and a second push plate 649 through an elastic element. The first push plate 648 is disposed in the first filling cavity 645, and the second push plate 649 is disposed in the second filling cavity 646. Sealing gaskets are provided around the first push plate 648 and the second push plate 649 to ensure that the thermal conductive agent does not leak out.

[0034] To ensure that the thermally conductive agent in the first heat-conducting cavity 6422 and the second heat-conducting cavity 6432 does not dry out and become ineffective during long-term use of the cable, a first filling cavity 645 is connected to the first heat-conducting cavity 6422 through a first through hole 6451, and a second filling cavity 646 is connected to the second heat-conducting cavity 6432 through a second through hole 6461. Both the first filling cavity 645 and the second filling cavity 646 are filled with thermally conductive agent. When the thermally conductive agent in the first heat-conducting cavity 6422 is used up, the first push plate 648 will advance a little towards the first filling cavity 645 under the pushing force of the elastic element, pushing the thermally conductive agent in the first filling cavity 645 into the first heat-conducting cavity 6422 through the first through hole 6451. Similarly, the replenishment of the thermally conductive agent in the second heat-conducting cavity 6432 is also carried out in the same way, ensuring a continuous supply of thermally conductive agent and enabling the cable to be used for a long time.

[0035] like Figure 4 , Figure 5 , Figure 12 and Figure 13As shown in the embodiment of the present invention, in a specific implementation of a forced heat dissipation cross-linked polyethylene insulated cable, the heat dissipation structure includes a first air cavity 631, a second air cavity 632, a third through hole 633, and a fourth through hole 634. The first air cavity 631 and the second air cavity 632 are disposed inside the second wing 630 and are connected to each other. The third through hole 633 connects the first air cavity 631 and the vent pipe 610. The fourth through hole 634 connects the second air cavity 632 and the vent pipe 610. An air baffle 635 is provided between the first air cavity 631 and the second air cavity 632. An air groove 636 is formed between the top of the air baffle 635 and the top wall of the second wing 630. The first air chamber 631 is provided with several layers of third heat sinks 6311, and several ventilation holes are opened on the surface of the third heat sinks 6311; the second air chamber 632 is provided with a stepped heat sink 6321, and the stepped heat sink 6321 is provided with a first stepped heat sink 6322, a second stepped heat sink 6323 and an air outlet 6324. Several ventilation holes are also provided on the cavity walls of the first stepped heat sink 6322 and the second stepped heat sink 6323. The air outlet 6324 communicates with the fourth through hole 634.

[0036] Specifically, when the cold air reaches the heat dissipation structure, some of the cold air flows along the vent pipe 610, while another portion enters the first air chamber 631 through the third through-hole 633 for stratified heat dissipation. The first air chamber 631 contains multiple layers of arc-shaped third heat dissipation fins 6311, which are made of copper. The arc-shaped structure increases the heat dissipation area. Each layer of copper heat dissipation fins has vent holes, further increasing the heat dissipation area. After passing through these multiple layers of copper heat dissipation fins, the cold air undergoes initial stratified heat dissipation, and then passes through the air groove 636 (such as...). Figure 5As shown, the gas enters the second air chamber 632. Upon reaching the second air chamber 632, stepped heat dissipation occurs. The stepped heat sink 6321 is bonded to the second air chamber 632. The gas enters the first stepped heat dissipation chamber 6322 within the stepped heat sink 6321. The sidewalls and bottom walls of the first stepped heat dissipation chamber 6322 and the second stepped heat dissipation chamber 6323 are also made of heat dissipation copper sheets. The sidewalls and bottom walls of the first stepped heat dissipation chamber 6322 and the second stepped heat dissipation chamber 6323 are also provided with vents. The gas is separated through the sidewalls and bottom walls of the first stepped heat dissipation chamber 6322 and enters the second stepped heat dissipation chamber 6323 respectively, achieving... The first step of heat dissipation involves the second step heat dissipation chamber 6323, whose side and bottom walls have a larger area. This second step heat dissipation chamber provides the final cooling for the gas. The gas is separated by the side and bottom walls of the second step heat dissipation chamber 6323 and flows into the outlet chamber 6324, completing the final step heat dissipation. Finally, the gas flows into the vent pipe 610 through the fourth through hole 634. By performing step heat dissipation on the gas each time, the gas can be effectively divided into two parts step by step, allowing them to pass through the bottom and side walls of the two step heat dissipation chambers respectively. The bottom and side wall areas of the two step heat dissipation chambers gradually increase, resulting in better cooling of the separated air.

[0037] like Figure 4 , Figure 10 and Figure 11 As shown in the embodiment of the present invention, in a specific implementation of a forced heat dissipation cross-linked polyethylene insulated cable, the air guiding device 650 includes a fan disposed within the third through hole 633. An air guiding component 660 is also provided at the first air passage 621 and the third through hole 633 within the air pipe 610. The air guiding component 660 includes a positioning ring 661 and a passive fan 662. The positioning ring 661 is disposed within the air pipe 610. A plurality of air guiding holes 6611 are formed on the side wall of the air pipe 610. 1. It communicates with the third through hole 633; ​​the passive fan 662 includes fan blades 6621 and through plate 6622. The fan blades 6621 and through plate 6622 are fixedly connected. The through plate 6622 is rotatably mounted on the bracket 663 inside the positioning ring 661. The through plate 6622 is provided with ventilation holes 6623. Every two fan blades 6621, a ventilation hole 6623 is provided on the through plate 6622. The adjacent fan blades 6621 and through plate 6622 without ventilation holes 6623 form an air storage compartment 6624.

[0038] Specifically, to allow more air to enter the heat dissipation structure, an air guide device 650 is installed in the third through hole 633. When the cooling chip 641 generates electrical energy, the air guide device 650 acts as a fan, which rotates and draws some air into the third through hole 633. Furthermore, to ensure sufficient air enters the first air passage 621 and the heat dissipation structure, an air guide component 660 is installed in the vent pipe 610. The air guide component 660 is bonded to the vent pipe 610 and includes a positioning ring 661 and a passive fan 662. The positioning ring 661 is fixed inside the vent pipe 610, while the passive fan 662 rotatably rotates onto a bracket 663 mounted on the positioning ring 661. When the cold air reaches the first air passage 621 or the third through hole 633, some of the cold air will pass through the fan blade 6621 and flow out through the vent 6623, thus giving the passive fan 662 a rotational force. Another part of the cold air will enter the air storage chamber 6624 and, under the rotation of the passive fan 662, be pushed into the first air passage 621 or the third through hole 633. This structure allows more air to enter the sensing air chamber 623 through the first air passage 621, ensuring the normal operation of the cooling chip 641. It also allows more air to enter the heat dissipation structure through the third through hole 633 to complete heat exchange, ensuring the heat exchange efficiency of the air and thus improving the heat dissipation efficiency of the insulated cable.

[0039] like Figure 2 and Figure 3 As shown in the embodiment of the present invention, in a specific embodiment of a forced heat dissipation cross-linked polyethylene insulated cable, one end of the vent pipe 610 is a first mounting part, on which a first arc groove 611 and a second arc groove 612 are provided. The other end of the vent pipe 610 is a second mounting part, on which an arc protrusion 613 and a first binding sleeve 614 are provided. A first fastening rope 615 is provided inside the first binding sleeve 614.

[0040] It should be understood that when several vent pipes 610 need to be connected together, the first mounting part of the vent pipe 610 needs to be installed with the second mounting part of the next vent pipe 610. At this time, the arc-shaped protrusion 613 is inserted into the first arc groove 611 to maintain the positioning effect. In addition, in order to further prevent the first mounting part and the second mounting part from separating, a first binding sleeve 614 is also provided. A first fastening rope 615 is bound in the first binding sleeve 614 and the first fastening rope 615 is inserted into the second arc groove 612. The first fastening rope 615 is not elastic. After binding, it can significantly enhance the stability of the connection between them.

[0041] like Figure 2 and Figure 3As shown in the embodiment of the present invention, in a specific implementation of a forced heat dissipation cross-linked polyethylene insulated cable, a first torsion section 670 is provided on the vent pipe 610. The first torsion section 670 is located between the first wing 620 and the second wing 630, and the first torsion section 670 can be bent at a large angle. A second binding sleeve 671 is provided on the upper side of the first torsion section 670 of the vent pipe 610, and a third binding sleeve 672 is provided on the lower side. A second fastening rope 673 is provided inside the second binding sleeve 671, and a third fastening rope 674 is provided inside the third binding sleeve 672. A plurality of connecting ropes 675 are connected to the second fastening rope 673 and the third fastening rope 674.

[0042] In this embodiment, to ensure the strength of the entire insulated cable and prevent the vent pipe 610 from being flattened due to compression of the insulated cable, the vent pipe 610 is made of metal, thereby ensuring the rigidity of the vent pipe 610. At the same time, to ensure that the insulated cable can be bent at a certain angle, a first torsion section 670 is provided on the vent pipe 610 between the first wing 620 and the second wing 630. The first torsion section 670 can be a small section or a large section. In fact, the entire vent pipe 610 between the first wing 620 and the second wing 630 can be set as the first torsion section 670. The first torsion section 670 is a metal corrugated pipe, which has a good bending effect. When bending the insulated cable, the bending can be performed at the position corresponding to the first torsion section 670. Correspondingly, during cable production, a mark can be made on the outer sheath 500 at this position to indicate that the bending action can be performed here. Furthermore, to prevent the first torsion segment 670 from breaking due to excessive force when bending the insulated cable, a second restraining sleeve 671 is provided on the upper side of the first torsion segment 670. A second fastening rope 673 is bound inside the second restraining sleeve 671. A third restraining sleeve 672 is provided on the lower side. A third fastening rope 674 is bound inside the third restraining sleeve 672. Multiple connecting ropes 675 are bound to the second and third fastening ropes 673 and 674, arranged in a circumferential direction. The second and third fastening ropes 673 and 674 are inelastic, while the connecting ropes 675 have a certain degree of elasticity. This allows the first torsion segment 670 to bend in any direction, preventing it from bending further and thus avoiding damage to the first torsion segment 670 due to rapid bending of the cable.

[0043] like Figure 2 and Figure 3As shown in the embodiment of the present invention, in a specific implementation of a forced heat dissipation cross-linked polyethylene insulated cable, a second torsion section 680 is connected between the sidewall of the first wing 620 and the sidewall of the second wing 630. The power line of the cooling chip 641 passes through the sidewall of the first wing 620 and enters the second torsion section 680, and passes through the sidewall of the second wing 630, and is connected to the air guiding device 650.

[0044] Specifically, in order to protect the power line between the cooling chip 641 and the gas guiding device 650, a second twist section 680 is provided. The second twist section 680 is also a metal corrugated pipe, which can also be bent. The power line of the cooling chip 641 passes through the second twist section 680 to connect with the gas guiding device 650 and supply power to it.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A forced-heat-dissipation cross-linked polyethylene insulated cable, characterized in that, include: A plurality of cable cores (100) are arranged in a circumferential direction. An inner shielding layer (110) is provided around the outer periphery of the cable cores (100), and an insulating layer (120) is provided around the outer periphery of the inner shielding layer (110). A filler layer (200) is used to wrap the plurality of the cable cores (100); An inner protective layer (300) is disposed around the filling layer (200); An outer shielding layer (400) is disposed around the inner protective layer (300); An outer sheath (500) is disposed around the outer shielding layer (400); The filling layer (200) is provided with a forced heat dissipation device, which includes a plurality of forced heat dissipation units (600), each of which includes: A vent pipe (610) is disposed at the center of the filling layer (200); A plurality of first wings (620) are arranged in a circumferential direction around the vent pipe (610). The first wings (620) are provided with an electricity generation component (640). The electricity generation component (640) includes a cooling chip (641). The cooling chip (641) is provided with a cold surface and a hot surface. When the cold surface and the hot surface generate a temperature difference, the cooling chip (641) can generate electricity. Several second wings (630) are arranged in a circumferential direction around the vent pipe (610). The second wings (630) are provided with a heat dissipation structure inside to dissipate heat from the gas. The heat dissipation structure is provided with a gas guiding device (650). The gas guiding device (650) is electrically connected to the cooling chip (641) to guide more air into the heat dissipation structure to complete the heat dissipation.

2. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 1, characterized in that: The insulating layer (120) is made of cross-linked polyethylene. The first wing (620) is connected to a sensing air chamber (623) through a first air passage (621) and a second air passage (622). The bottom wall of the sensing air chamber (623) is provided with a mounting platform (624). The power generation component (640) is provided on the mounting platform (624). The power generation component (640) also includes a first heat sink (642) and a second heat sink (643). One side of the first heat sink (642) is provided on the mounting platform (624). The other side of the first heat sink (642) is connected to the second heat sink (643) through a heat insulation sheet (690). The first heat sink (642) and the second heat sink (643) form a receiving cavity (644). The cooling chip (641) is provided in the receiving cavity (644).

3. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 2, characterized in that: The first heat sink (642) has a first rectangular frame protrusion (6421) on one side, and the second heat sink (643) has a second rectangular frame protrusion (6431) on one side. The first rectangular frame protrusion (6421) and the second rectangular frame protrusion (6431) together clamp the cooling chip (641). The first rectangular frame protrusion (6421) and the cooling chip (641) form a first heat conduction cavity (6422), and the second rectangular frame protrusion (6431) and the cooling chip (641) form a second heat conduction cavity (6432). The first heat conduction cavity (6422) and the second heat conduction cavity (6432) are filled with heat conduction agent.

4. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 3, characterized in that: The first heat sink (642) has a first filling cavity (645) on one side, which is connected to the first heat conduction cavity (6422) through a first through hole (6451). The second heat sink (643) has a second filling cavity (646) on one side, which is connected to the second heat conduction cavity (6432) through a second through hole (6461). The first filling cavity (645) and the second filling cavity (646) are also filled with the thermal conductive agent. A sealing plate (647) is installed on one side of the first heat sink (642) and the second heat sink (643). The sealing plate (647) is connected to a first push plate (648) and a second push plate (649) through an elastic element. The first push plate (648) is located in the first filling cavity (645), and the second push plate (649) is located in the second filling cavity (646).

5. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 4, characterized in that: The hot side of the cooling chip (641) faces the axis of the vent pipe (610), and the cold side of the cooling chip (641) faces the opposite direction to the hot side of the cooling chip (641).

6. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 5, characterized in that: The heat dissipation structure includes a first air chamber (631), a second air chamber (632), a third through hole (633), and a fourth through hole (634). The first air chamber (631) and the second air chamber (632) are located inside the second wing (630) and are connected. The third through hole (633) connects the first air chamber (631) and the vent pipe (610). The fourth through hole (634) connects the second air chamber (632) and the vent pipe (610). An air baffle (635) is provided between the first air chamber (631) and the second air chamber (632). The top of the air baffle (635) and the top wall of the second wing (630) form an air groove (636). The first air chamber (631) is provided with several layers of third heat sinks (6311), and several ventilation holes are opened on the surface of the third heat sinks (6311); the second air chamber (632) is provided with a stepped heat sink (6321), and the stepped heat sink (6321) is provided with a first stepped heat sink cavity (6322), a second stepped heat sink cavity (6323) and an air outlet cavity (6324). Several ventilation holes are also provided on the cavity walls of the first stepped heat sink cavity (6322) and the second stepped heat sink cavity (6323). The air outlet cavity (6324) communicates with the fourth through hole (634).

7. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 6, characterized in that: The air guiding device (650) includes a fan disposed within the third through hole (633). Air guiding components (660) are also provided at the first air passage (621) and the third through hole (633) within the air pipe (610). Each air guiding component (660) includes a positioning ring (661) and a passive fan (662). The positioning ring (661) is disposed within the air pipe (610). A plurality of air guiding holes (6611) are opened on the side wall of the air pipe (610), and these holes (6611) communicate with the third through hole (633). The passive fan (662)... It includes fan blades (6621) and a through plate (6622). The fan blades (6621) and the through plate (6622) are fixedly connected. The through plate (6622) is rotatably mounted on a bracket (663) inside the positioning ring (661). The through plate (6622) is provided with ventilation holes (6623). Every two fan blades (6621) are provided with a ventilation hole (6623) on the through plate (6622). Adjacent fan blades (6621) and through plates (6622) without ventilation holes (6623) form an air storage compartment (6624).

8. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 7, characterized in that: One end of the vent pipe (610) is a first mounting part, on which a first arc groove (611) and a second arc groove (612) are provided. The other end of the vent pipe (610) is a second mounting part, on which an arc protrusion (613) and a first restraint sleeve (614) are provided. A first fastening rope (615) is provided inside the first restraint sleeve (614).

9. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 8, characterized in that: The ventilation pipe (610) is provided with a first twist section (670), which is located between the first wing (620) and the second wing (630). The first twist section (670) can be bent at a large angle. The upper side of the first twist section (670) of the ventilation pipe (610) is provided with a second restraint sleeve (671), and the lower side is provided with a third restraint sleeve (672). The second restraint sleeve (671) is provided with a second fastening rope (673), and the third restraint sleeve (672) is provided with a third fastening rope (674). Several connecting ropes (675) are connected to the second fastening rope (673) and the third fastening rope (674).

10. The forced heat dissipation cross-linked polyethylene insulated cable as described in claim 9, characterized in that: A second torsion section (680) is connected between the sidewall of the first wing (620) and the sidewall of the second wing (630). The power line of the cooling chip (641) passes through the sidewall of the first wing (620), enters the second torsion section (680), and passes through the sidewall of the second wing (630) to connect with the air guiding device (650).

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