Overhead insulated cable

Abstract

The utility model relates to the field of cables, in particular to an overhead insulated cable, which comprises a steel core and a shielding assembly, a plurality of aluminum alloy cores are arranged on the outer surface of the steel core, first heat-conducting insulating assemblies are filled among the shielding assembly, the aluminum alloy cores and the steel core, and second heat-conducting insulating assemblies are fixedly arranged on the outer surface of the shielding assembly. A protection assembly is fixedly arranged on the outer surface of the second heat conduction insulation assembly, and an auxiliary heat dissipation structure is arranged on the protection assembly. And heat energy generated in the cable in the electric energy transmission process can be quickly conducted out of the cable, so that the function of quickly dissipating heat to the outside is realized, the heat dissipation efficiency of the cable is greatly improved, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to an overhead insulated cable. Background Art

[0002] Overhead insulated cable products are a new series of products for transmitting electric energy through overhead transmission lines. They are the preferred choice for power grid construction and transformation of 10kV transmission engineering lines. The products have both the electric energy transmission characteristics of power cables and the strong mechanical properties of overhead cables. Compared with bare wires, overhead insulated cables have the characteristics of small laying spacing, high safety and reliability, and excellent resistance to atmospheric aging.

[0003] Traditional overhead insulated cables are prone to cable damage due to over-high temperature and slow heat dissipation, which shortens the service life of the cables and needs further improvement.

[0004] Therefore, it is necessary to invent an overhead insulated cable. Utility Model Content

[0005] To this end, the utility model provides an overhead insulated cable to solve the problem that the traditional overhead insulated cable is easily damaged due to excessively high temperature and slow heat dissipation, thereby shortening the service life of the cable.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an overhead insulated cable, comprising a steel core, a plurality of aluminum alloy cores are arranged on the outer surface of the steel core, and also comprising a shielding component, a first heat-conducting insulation component is filled between the shielding component, the plurality of aluminum alloy cores and the steel core, a second heat-conducting insulation component is fixedly arranged on the outer surface of the shielding component, a protective component is fixedly arranged on the outer surface of the second heat-conducting insulation component, and an auxiliary heat dissipation structure is arranged on the protective component.

[0007] Preferably, the first thermally conductive insulating component comprises thermally conductive silicone, and the thermally conductive silicone is filled between the shielding component, the plurality of aluminum alloy cores and the steel core.

[0008] Preferably, the shielding assembly comprises an aluminum alloy metal braided mesh, and the aluminum alloy metal braided mesh is fixed to the outer surface of the thermal conductive silicone.

[0009] Preferably, the second thermally conductive insulating component comprises a thermally conductive silicone cloth, and the thermally conductive silicone cloth is fixed to the outer surface of the aluminum alloy metal woven mesh.

[0010] Preferably, the protective component comprises a cross-linked polyethylene rubber sleeve, and the inner surface of the cross-linked polyethylene rubber sleeve is fixed to the outer surface of the thermal conductive silicone cloth.

[0011] Preferably, the auxiliary heat dissipation structure comprises a plurality of heat dissipation holes, and the plurality of heat dissipation holes are evenly opened on the cross-linked polyethylene rubber sleeve.

[0012] Preferably, the heat dissipation holes are configured as round holes or waist-shaped holes.

[0013] The beneficial effect of the utility model is that through the coordinated use of the steel core, aluminum alloy core, shielding component, first heat-conducting insulation component, second heat-conducting insulation component, protective component and auxiliary heat dissipation structure, while having the power transmission characteristics of an overhead insulated cable and strong mechanical properties, the heat energy generated in the process of transmitting power inside the cable can be quickly exported to the outside of the cable, thereby realizing the function of rapid heat dissipation to the outside, greatly improving the heat dissipation efficiency of the cable, and benefiting the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural cross-sectional view provided by the utility model;

[0015] Figure 2 The front view of the structure provided by the utility model;

[0016] Figure 3 A structural stereogram of the first embodiment provided by the utility model;

[0017] Figure 4 This is a structural stereogram of the second embodiment provided by the utility model.

[0018] In the figure: 1. Steel core; 2. Aluminum alloy core; 3. Thermal conductive silicone; 4. Aluminum alloy metal woven mesh; 5. Thermal conductive silicone cloth; 6. Cross-linked polyethylene rubber sleeve; 7. Heat dissipation holes. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Embodiment 1:

[0021] Please refer to the attached Figure 1-3 The utility model provides an overhead insulated cable, including a steel core 1, which has the advantages of light weight, high strength, corrosion resistance, good mechanical properties, etc., and is widely used in overhead power transmission lines. The outer surface of the steel core 1 is provided with a plurality of aluminum alloy cores 2, which are used to provide good power transmission characteristics. The utility model also includes a shielding component, and a first heat-conducting insulation component is filled between the shielding component, the plurality of aluminum alloy cores 2 and the steel core 1. A second heat-conducting insulation component is fixedly provided on the outer surface of the shielding component, and a protective component is fixedly provided on the outer surface of the second heat-conducting insulation component, and an auxiliary heat dissipation structure is provided on the protective component;

[0022] The first heat-conducting insulating component includes a heat-conducting silicone 3, which is filled between the shielding component, the plurality of aluminum alloy cores 2 and the steel core 1. The heat-conducting silicone 3 has multiple functions such as high thermal conductivity, electrical insulation, shock and puncture resistance, and can timely transfer the heat energy generated by the aluminum alloy core 2 during the transmission of electrical energy;

[0023] The shielding component includes an aluminum alloy metal braided mesh 4, which is fixed on the outer surface of the thermal conductive silicone 3. The aluminum alloy metal braided mesh 4 has a shielding function, which is beneficial to the stability of the aluminum alloy core 2 in the process of transmitting electric energy, and the aluminum alloy metal braided mesh 4 also has better thermal conductivity;

[0024] The second heat-conducting and insulating component includes a heat-conducting silicone cloth 5, which is fixed on the outer surface of the aluminum alloy metal woven mesh 4. The heat-conducting silicone cloth is an organic silicon polymer elastomer reinforced with glass fiber as a base material, which can effectively reduce thermal resistance and is electrically insulating, has good thermal conductivity, high chemical resistance, and can withstand circuit short circuits caused by high voltage and metal parts piercing. At the same time, the heat-conducting silicone cloth has strong temperature resistance and avoids aging and deterioration due to long-term overheating. Therefore, the heat energy generated by the aluminum alloy core 2 in the process of transmitting electrical energy can be transferred to the heat-conducting silica gel 3, the aluminum alloy metal woven mesh 4 and the heat-conducting silicone cloth 5 in turn;

[0025] The protective component includes a cross-linked polyethylene rubber sleeve 6, the inner surface of the cross-linked polyethylene rubber sleeve 6 is fixed to the outer surface of the thermal conductive silicone cloth 5;

[0026] The auxiliary heat dissipation structure includes a plurality of heat dissipation holes 7, which are evenly arranged on the cross-linked polyethylene rubber sleeve 6. The heat dissipation holes 7 are arranged in a circular hole shape (such as Figure 3 As shown), the heat energy transferred to the heat-conductive silicone cloth 5 can be promptly dissipated to the outside through a plurality of circular hole-shaped heat dissipation holes 7, thereby greatly improving the heat dissipation efficiency of the cable and facilitating the service life of the cable.

[0027] The use principle of the utility model: under the action of the steel core 1 and the plurality of aluminum alloy cores 2, the overhead insulated cable has the characteristics of transmitting electric energy and strong mechanical properties, and the heat energy generated in the process of transmitting electric energy by the aluminum alloy core 2 can be transferred to the thermal conductive silica gel 3, the aluminum alloy metal woven mesh 4 and the thermal conductive silicone cloth 5 in sequence, and the heat energy transferred to the thermal conductive silicone cloth 5 can be timely dissipated to the outside through the plurality of circular hole-shaped heat dissipation holes 7, that is, the overhead insulated cable can also quickly conduct the heat energy generated in the process of transmitting electric energy inside the cable to the outside of the cable, thereby realizing the function of quickly dissipating heat to the outside, greatly improving the heat dissipation efficiency of the cable, and being beneficial to the service life of the cable.

[0028] Embodiment 2:

[0029] Please refer to the attached Figure 4The utility model provides an overhead insulated cable, in which the heat dissipation holes 7 are arranged in a waist-shaped hole shape, that is, the heat energy transferred to the heat-conducting silicone cloth 5 can be promptly dissipated to the outside through a plurality of waist-shaped heat dissipation holes 7, which greatly improves the heat dissipation efficiency of the cable and is beneficial to the service life of the cable.

[0030] The use principle of the utility model: under the action of the steel core 1 and the plurality of aluminum alloy cores 2, the overhead insulated cable has the characteristics of transmitting electric energy and strong mechanical properties, and the heat energy generated in the process of transmitting electric energy by the aluminum alloy core 2 can be transferred to the thermal conductive silica gel 3, the aluminum alloy metal woven mesh 4 and the thermal conductive silicone cloth 5 in sequence, and the heat energy transferred to the thermal conductive silicone cloth 5 can be timely dissipated to the outside through the plurality of waist-shaped heat dissipation holes 7, that is, the overhead insulated cable can also quickly conduct the heat energy generated in the process of transmitting electric energy inside the cable to the outside of the cable, thereby realizing the function of quickly dissipating heat to the outside, greatly improving the heat dissipation efficiency of the cable, and being beneficial to the service life of the cable.

[0031] The above is only a preferred embodiment of the utility model. Any person skilled in the art can modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. An overhead insulated cable, comprising a steel core (1), a plurality of aluminum alloy cores (2) being arranged on the outer surface of the steel core (1), characterized in that: It also includes a shielding component, wherein a first heat-conducting insulating component is filled between the shielding component, the plurality of aluminum alloy cores (2) and the steel core (1), a second heat-conducting insulating component is fixedly arranged on the outer surface of the shielding component, a protective component is fixedly arranged on the outer surface of the second heat-conducting insulating component, and an auxiliary heat dissipation structure is arranged on the protective component.

2. An overhead insulated cable according to claim 1, characterized in that: The first heat-conducting insulating component comprises heat-conducting silica gel (3), and the heat-conducting silica gel (3) is filled between the shielding component, a plurality of aluminum alloy cores (2) and the steel core (1).

3. An overhead insulated cable according to claim 2, characterized in that: The shielding component comprises an aluminum alloy metal braided mesh (4), and the aluminum alloy metal braided mesh (4) is fixed on the outer surface of the thermal conductive silica gel (3).

4. An overhead insulated cable according to claim 3, characterized in that: The second heat-conducting insulating component comprises a heat-conducting silicone cloth (5), and the heat-conducting silicone cloth (5) is fixed on the outer surface of the aluminum alloy metal braided mesh (4).

5. An overhead insulated cable according to claim 4, characterized in that: The protective component comprises a cross-linked polyethylene rubber sleeve (6), the inner surface of the cross-linked polyethylene rubber sleeve (6) being fixed to the outer surface of the heat-conducting silicone cloth (5).

6. An overhead insulated cable according to claim 5, characterized in that: The auxiliary heat dissipation structure comprises a plurality of heat dissipation holes (7), and the plurality of heat dissipation holes (7) are evenly arranged on the cross-linked polyethylene rubber sleeve (6).

7. An overhead insulated cable according to claim 6, characterized in that: The heat dissipation holes (7) are configured as round holes or waist-shaped holes.

Images