Overhead insulation power cable

Abstract

The utility model belongs to the technical field of overhead insulated cables, and particularly relates to an overhead insulated power cable, which comprises an outer sheath and an insulating layer, the inner side of the outer sheath is connected with the insulating layer, and the inner side of the insulating layer is connected with a conductor; the surface of the outer sheath is connected with a heat dissipation sleeve, the surface of the heat dissipation sleeve is connected with a first convection plate, one side of the first convection plate is connected with a second convection plate, the end of the first convection plate is connected with an assembly plate, and the surface of the assembly plate is connected with an assembly plate. According to the utility model, the heat dissipation sleeve is sleeved on the surface of the outer sheath, then the first convection plate and the second convection plate are in butt joint on the surface of the outer sheath, and then the assembling plate and the locking bolt are used, so that the first convection plate and the second convection plate can be conveniently installed and stabilized; and therefore, the strong wind contacted with the surface of the overhead cable can be conveniently drained, the influence of the strong wind on the overhead insulated cable is reduced, and the safety of the overhead insulated cable is improved.

Description

Technical Field

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

[0002] Overhead cable (full name: overhead insulated cable) is an overhead conductor equipped with an insulating layer and a protective outer sheath. It is a special cable manufactured using a production process similar to that of cross-linked cables. It is between overhead conductors and underground cables and is a new way of transmitting electricity. Overhead cables are all single-core. According to their different structures, they can be divided into hard aluminum wire structure, hard-drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core support structure and self-supporting three-core composite structure (the wire core can be hard aluminum or hard copper wire). Overhead cables are mainly used in power transmission occasions, such as urban distribution networks, rural power grids, outdoor power grids of industrial and mining enterprises, railway electrification, highway lighting, etc. Compared with underground cables, overhead cables have longer transmission distances and are easier to repair when faults occur;

[0003] Among them, the "overhead cable" disclosed in the application number "CN201921739552.9" is also an increasingly mature technology. Even if the overhead cable rubs against other objects (such as trees) in the air, causing the outer insulation layer to break, the cable core is still wrapped by the inner insulation layer. And because the colors of the various insulation layers are different, when the administrator finds that the surface color of a certain position of the overhead cable is different from the color of the other positions, the administrator can quickly find the location of the cable wear, so that the worn position can be protected in advance to avoid safety hazards. However, the overhead insulated cable also has the following defects: when using the overhead insulated cable, since the cable needs to be erected at high altitude when in use, when encountering bad weather or strong winds, the overhead insulated cable is prone to shaking, and then the cable terminal is prone to loose circuit, causing a certain degree of safety hazards. Utility Model Content

[0004] The utility model aims to provide an overhead insulated power cable, aiming to solve the problem in the prior art that the overhead insulated cable is prone to shaking when in use, because the cable needs to be erected at high altitude when in use, and thus when encountering bad weather or strong winds, the overhead insulated cable is prone to shaking, and the cable terminal is prone to loose circuit, causing a certain degree of safety hazard.

[0005] To achieve the above object, the utility model provides the following technical solution: an overhead insulated power cable, comprising an outer sheath and an insulating layer, the inner side of the outer sheath is connected to the insulating layer, and the inner side of the insulating layer is connected to the conductor;

[0006] The surface of the outer sleeve is connected to a heat dissipation sleeve, the surface of the heat dissipation sleeve is connected to a first convection plate, one side of the first convection plate is connected to a second convection plate, the end of the first convection plate is connected to an assembly plate, the surface of the assembly plate is connected to the assembly plate, the surface of the assembly plate is penetrated by a locking bolt, the surfaces of the first convection plate and the second convection plate are provided with air inlets and heat dissipation holes, and the surface of the heat dissipation sleeve is connected to a heat conducting column.

[0007] In order to improve the heat dissipation efficiency, as a preferred overhead insulated power cable of the utility model, the heat dissipation sleeve is made of silicon carbide material, and the heat conductive column is made of alumina ceramic material.

[0008] In order to facilitate assembly, as a preferred overhead insulated power cable of the utility model, the first convection plate and the second convection plate are of fish fin structure, and the first convection plate is connected to the second convection plate by a locking bolt on the surface of the assembly plate.

[0009] In order to improve the reuse of wind energy, as a preferred overhead insulated power cable of the utility model, the air inlet is in a T-shaped structure, and the tail end of the air inlet is connected to the heat dissipation sleeve.

[0010] In order to facilitate heat dissipation, as a preferred embodiment of the overhead insulated power cable of the utility model, the surface size of the heat-conducting column is matched with the inner wall size of the heat dissipation hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model arranges the heat dissipation sleeve on the surface of the outer sheath and then butts the first convection plate and the second convection plate on the surface of the outer sheath, and then uses an assembly plate and a locking bolt to facilitate the installation and stability of the first convection plate and the second convection plate, thereby facilitating the drainage of strong winds that contact the surface of the overhead cable, reducing the impact of strong winds on the overhead insulated cable and improving the safety of the overhead insulated cable. In addition, through the use of heat dissipation holes, heat-conducting columns and heat dissipation sleeves, it is convenient to timely evacuate the heat generated inside the overhead insulated cable, thereby increasing the service life of the overhead insulated cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the first convection plate and the second convection plate of the utility model;

[0017] Figure 4 This is a schematic diagram of the heat dissipation sleeve connection structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the heat dissipation sleeve structure of the utility model;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the first convection plate of the present utility model.

[0020] In the figure: 1. outer sheath; 2. insulation layer; 3. conductor; 4. heat dissipation sleeve; 5. first convection plate; 6. second convection plate; 7. assembly plate; 8. locking bolt; 9. air inlet; 10. heat dissipation hole; 11. thermal conductive column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 , the utility model provides the following technical solution: an overhead insulated power cable, comprising an outer sheath 1 and an insulating layer 2, the inner side of the outer sheath 1 is connected to the insulating layer 2, and the inner side of the insulating layer 2 is connected to the conductor 3;

[0023] The surface of the outer sleeve 1 is connected to the heat dissipation sleeve 4, the surface of the heat dissipation sleeve 4 is connected to the first convection plate 5, one side of the first convection plate 5 is connected to the second convection plate 6, the end of the first convection plate 5 is connected to the assembly plate 7, the surface of the assembly plate 7 is connected to the assembly plate 7, the surface of the assembly plate 7 is penetrated by a locking bolt 8, the surfaces of the first convection plate 5 and the second convection plate 6 are provided with air inlets 9 and heat dissipation holes 10, and the surface of the heat dissipation sleeve 4 is connected to a heat conductive column 11.

[0024] Preferably, the heat dissipation sleeve 4 is made of silicon carbide, and the heat-conducting column 11 is made of alumina ceramic.

[0025] During specific use, the use of the first convection plate 5 and the second convection plate 6 facilitates the diversion of the blowing direction of strong winds, thereby increasing the life of the overhead insulated cable.

[0026] Preferably, the first convection plate 5 and the second convection plate 6 are of a fish-fin structure, and the first convection plate 5 is connected to the second convection plate 6 via a locking bolt 8 on the surface of the assembly plate 7 .

[0027] During specific use, the first convection plate 5 and the second convection plate 6 can be conveniently installed and fixed by passing the locking bolt 8 through the assembly plate 7 and the second convection plate 6 .

[0028] Preferably, the air inlet 9 is in a T-shaped structure, and the tail end of the air inlet 9 is connected to the heat dissipation sleeve 4 .

[0029] During specific use, the air inlet 9 is used to facilitate the heat dissipation of the overhead insulated cable by the wind in the air, thereby realizing the reuse of wind energy.

[0030] Preferably, the surface size of the heat-conducting column 11 matches the inner wall size of the heat-dissipating hole 10 .

[0031] During specific use, the use of the heat-conducting column 11 facilitates the transfer of heat inside the overhead insulated cable, thereby improving the heat dissipation efficiency of the overhead insulated cable.

[0032] Working principle: by putting the heat dissipation sleeve 4 on the surface of the outer sheath 1 and then docking the first convection plate 5 and the second convection plate 6 on the surface of the outer sheath 1, and then passing the locking bolt 8 through the assembly plate 7 and threadedly connecting with the second convection plate 6, it is convenient to install and stabilize the first convection plate 5 and the second convection plate 6, and then it is convenient to drain the strong wind that contacts the surface of the overhead cable, reduce the impact of the strong wind on the overhead insulated cable, and improve the safety of the overhead insulated cable. In addition, by using the heat dissipation holes 10 on the surface of the first convection plate 5 and the second convection plate 6, when the wind blows, the heat dissipation holes 10 will be filled with air, and then the overhead insulated cable will be cooled. In addition, the heat dissipation sleeve 4 will also absorb the heat inside the overhead cable, and transfer the heat through the heat-conducting column 11, so as to facilitate the timely evacuation of the heat generated inside the overhead insulated cable and improve the service life of the overhead insulated cable.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An overhead insulated power cable, comprising an outer sheath (1) and an insulating layer (2), characterized in that: The inner side of the outer sheath (1) is connected to an insulating layer (2), and the inner side of the insulating layer (2) is connected to a conductor (3); The surface of the outer sleeve (1) is connected to a heat dissipation sleeve (4), the surface of the heat dissipation sleeve (4) is connected to a first convection plate (5), one side of the first convection plate (5) is connected to a second convection plate (6), the end of the first convection plate (5) is connected to an assembly plate (7), the surface of the assembly plate (7) is connected to the assembly plate (7), the surface of the assembly plate (7) is connected to a locking bolt (8) passing through the surface of the assembly plate (7), the surfaces of the first convection plate (5) and the second convection plate (6) are provided with air inlets (9) and heat dissipation holes (10), and the surface of the heat dissipation sleeve (4) is connected to a heat conducting column (11).

2. An overhead insulated power cable according to claim 1, characterized in that: The heat dissipation sleeve (4) is made of silicon carbide, and the heat conducting column (11) is made of alumina ceramic.

3. An overhead insulated power cable according to claim 1, characterized in that: The first convection plate (5) and the second convection plate (6) are of a fish-fin structure, and the first convection plate (5) is connected to the second convection plate (6) via a locking bolt (8) on the surface of the assembly plate (7).

4. An overhead insulated power cable according to claim 1, characterized in that: The air inlet (9) is in a T-shaped structure, and the rear end of the air inlet (9) is connected to the heat dissipation sleeve (4).

5. An overhead insulated power cable according to claim 1, characterized in that: The surface size of the heat-conducting column (11) is matched with the inner wall size of the heat-dissipating hole (10).

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