Rapid heat dissipation type high-temperature cable

Abstract

The utility model discloses a rapid heat dissipation type high-temperature cable, and the cable comprises a conductor which is made of a high-conductivity aluminum alloy or copper alloy material; the insulating layer wraps the conductor; the heat dissipation layer is arranged outside the insulating layer and is of a metal net and graphene fiber composite structure, and heat dissipation holes or heat dissipation grooves are evenly distributed in the heat dissipation layer; the outer sheath wraps the heat dissipation layer, and when the cable works in a high-temperature environment, heat generated by the conductors can be quickly transmitted to the outside through the heat dissipation layer; the insulating layer is arranged outside the conductor in a coating mode, the contact between the insulating layer and the surface of the conductor is tighter, the coating thickness is low, and the heat of the conductor is easier to conduct; and the outer sheath formed by injection molding can be tightly wrapped outside the heat dissipation layer, so that the overall temperature of the cable is effectively reduced, and performance degradation caused by high temperature is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically relating to a high-temperature cable with rapid heat dissipation. Background Technology

[0002] In modern industrial production, many environments place stringent demands on the high-temperature resistance of cables. When traditional high-temperature cables operate for extended periods in high-temperature environments, the conductor generates heat due to resistance during current transmission, and this heat is difficult to dissipate quickly. As heat accumulates, the cable temperature continues to rise, which not only degrades the performance of the insulation material and increases the risk of leakage, but also accelerates the aging of internal components, significantly impacting the cable's performance and lifespan. For example, in steel smelting workshops, high-temperature environments often cause frequent failures of traditional cables, severely affecting the continuity and stability of production. Therefore, developing a high-temperature cable capable of rapid heat dissipation has become crucial for solving the challenges of cable use in current high-temperature operating environments. Summary of the Invention

[0003] To address the problem that the heat dissipation effect of existing high-temperature cables is poor, resulting in performance degradation and shortened lifespan in high-temperature environments, this utility model provides a fast heat dissipation high-temperature cable, which aims to significantly improve the heat dissipation performance of the cable in high-temperature environments and ensure stable and long-term operation of the cable.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0005] A high-temperature cable with rapid heat dissipation includes: a conductor made of a high-conductivity aluminum alloy or copper alloy; an insulation layer that wraps around the conductor; a heat dissipation layer disposed outside the insulation layer, which is a composite structure of metal mesh and graphene fiber, and the heat dissipation layer has heat dissipation holes or heat dissipation grooves evenly distributed on the heat dissipation layer; and an outer sheath that wraps around the heat dissipation layer.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the metal mesh is woven from a high thermal conductivity copper alloy, and the mesh size is 3-5mm.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the heat dissipation hole or heat dissipation groove is circular or elliptical and penetrates the heat dissipation layer.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the insulating layer is made of polyimide material with a thickness of 0.3-0.5mm, and is formed by a high-temperature curing process.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the insulating layer is made of polyimide material, which is coated on the outer surface of the conductor and cured at high temperature.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme, the thickness of the insulating layer is 0.3-0.5 mm.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the outer sheath has a thickness of 1.5-2mm and is formed by injection molding.

[0012] The outstanding and beneficial technical effects of this invention compared to the prior art are as follows: When the cable operates in a high-temperature environment, the heat generated by the conductor can be quickly transferred to the outside through the heat dissipation layer; and the insulation layer is applied to the outside of the conductor by coating, resulting in a closer contact between the insulation layer and the conductor surface, and the coating thickness is low, making it easier for the heat of the conductor to be conducted; the injection-molded outer sheath can also wrap more tightly around the outside of the heat dissipation layer, thereby effectively reducing the overall temperature of the cable, avoiding performance degradation caused by high temperature, significantly improving the performance and service life of the cable, reducing maintenance costs and replacement frequency, and providing reliable protection for power transmission in high-temperature operating environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the given embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 this application.

[0016] In the description of this application, the terms "first," "second," etc., 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.

[0017] Combination Figure 1 As shown, this application discloses a fast heat dissipation type high-temperature cable, which includes: a conductor 1 made of a high-conductivity aluminum alloy or copper alloy material; while effectively transmitting current, it can reduce the heat generated by resistance, ensure current transmission efficiency, and meet the high-power transmission requirements in high-temperature environments.

[0018] Insulation layer 2 encapsulates conductor 1; preferably, insulation layer 2 is made of polyimide. Specifically, the polyimide raw material is mixed with an organic solvent to form a uniform solution. Using a spraying device, such as a screw extrusion coating machine, the polyimide solution is uniformly coated onto the conductor surface, with the coating thickness precisely controlled at 0.3-0.5 mm. After coating, it is placed in a curing oven and cured at a high temperature of 350-400℃ for 1-2 hours. After curing, the insulation layer is tested using an insulation resistance tester and a withstand voltage tester to ensure that the insulation performance meets relevant standards. The imide tightly encapsulates the conductor; polyimide has excellent high-temperature resistance, allowing it to operate stably for extended periods in high-temperature environments. It also possesses good flame-retardant properties, effectively preventing the spread of flames and providing reliable insulation for the cable, preventing leakage accidents.

[0019] The heat dissipation layer 3, located outside the insulation layer 2, is a composite structure of metal mesh and graphene fiber. The heat dissipation layer 3 is formed by weaving a copper alloy metal mesh onto the conductor 1 coated with the insulation layer 2 using a weaving device. During the weaving process, the mesh size is controlled to be 3-5 mm to ensure the metal mesh has good flexibility and strength, facilitating subsequent processing and installation. Graphene nanosheets (thickness 3-10 nm, diameter 5-20 μm) are mixed with an organic binder (such as epoxy resin or polyurethane) at a mass ratio of 1:1. The mixture is stirred at 1000 r / min for 40 minutes using a high-speed mixer, and simultaneously subjected to ultrasonic dispersion treatment (frequency 30 kHz, time 20 minutes) to ensure uniform dispersion and no agglomeration of the graphene, forming a stable graphene slurry. Metal mesh composite: The graphene slurry is injected into the pores of the copper alloy metal mesh (4 mm mesh size), and a vacuum impregnation process is used to ensure full penetration of the slurry. It is then cured at 80-100℃ for 2 hours to form the metal mesh-graphene fiber composite heat dissipation layer. Graphene is uniformly distributed in the pores of a metal mesh in the form of nanoscale flakes. Its ultra-high thermal conductivity further enhances longitudinal heat transfer. The two work together to form an efficient heat dissipation channel and accelerate heat transfer.

[0020] The outer sheath 4 encloses a heat dissipation layer 3. Specifically, ceramicized silicone rubber raw material is fed into the hopper of an injection molding machine. The barrel temperature is set to 180-200℃, and the injection pressure to 80-100MPa. The ceramicized silicone rubber is melted by the screw of the injection molding machine and injected into a customized mold. The mold temperature is controlled at 40-60℃, the holding time is 10-15 seconds, and the cooling time is 30-40 seconds, forming an outer sheath with a thickness of 1.5-2mm. The mold design is precisely customized according to the outer diameter and shape of the cable to ensure the dimensional accuracy and surface quality of the outer sheath. After molding, the outer sheath undergoes visual inspection to check for surface defects such as bubbles, cracks, and missing material. Simultaneously, testing equipment, such as a Shore hardness tester and thermogravimetric analyzer, is used to test the hardness and high-temperature resistance of the outer sheath to ensure that the outer sheath meets design requirements and relevant industry standards, effectively protects the internal structure of the cable, and adapts to various harsh working environments. This material is not only heat-resistant, but can also quickly transform into a hard ceramic body under high-temperature environments to maintain structural integrity. It also has good wear resistance, effectively resisting external mechanical impacts, friction, and chemical corrosion, providing all-round protection for cables from external environmental damage and extending the outdoor service life of cables.

[0021] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A high-temperature cable with rapid heat dissipation, characterized in that, include: Conductor (1) is made of aluminum alloy or copper alloy material with high conductivity; insulation layer (2) wraps the conductor (1); heat dissipation layer (3) is disposed outside the insulation layer (2) and is a composite structure of metal mesh and graphene fiber; outer sheath (4) wraps the heat dissipation layer (3).

2. The high-temperature cable with rapid heat dissipation according to claim 1, characterized in that, The metal mesh is woven from a high thermal conductivity copper alloy, with a mesh size of 3-5mm.

3. The high-temperature cable with rapid heat dissipation according to claim 1, characterized in that, The insulating layer (2) is made of polyimide material, which is coated on the outer surface of the conductor (1) and cured at high temperature.

4. The high-temperature cable with rapid heat dissipation according to claim 1, characterized in that, The thickness of the insulating layer is 0.3-0.5 mm.

5. The high-temperature cable with rapid heat dissipation according to claim 1, characterized in that, The outer sheath (4) has a thickness of 1.5-2 mm and is formed by injection molding.

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