Composite overhead cable

Abstract

The application discloses a composite overhead cable, which comprises a cable body and a sleeve which is equidistantly sleeved on the outer wall of the cable body, and the cable body is sequentially provided with a reinforcing core, an aluminum alloy conductor, an insulation layer, a heat-conducting layer, a shielding layer and an outer sheath layer from inside to outside. When the cable body appears a sagging phenomenon, the bottom of the cable body will be in an upward bending structure to extrude the arc-shaped elastic sheet and then extrude the buffer elastic block to be compressed. When the buffer elastic block is compressed, the support force of the buffer elastic block which is perpendicular to the outer circumferential surface of the cable body is increased to improve the support capacity of the cable body. When the buffer elastic block is compressed, the top center of the arc-shaped elastic sheet is moved downward under the pressure, so that the two ends of the arc-shaped elastic sheet are lifted upward to strengthen the upward support force of the two ends and then to improve the support capacity of the two ends of the arc-shaped elastic sheet to the cable body, thereby avoiding the problem that the cable body is damaged due to the sagging.

Description

Technical Field

[0001] This invention relates to the field of overhead cables, specifically a composite overhead cable. Background Technology

[0002] Overhead cable, also known as overhead insulated cable, is an overhead conductor with an insulation layer and a protective outer sheath. It is a special type of cable manufactured using a process similar to that of cross-linked cables. It is a new power transmission method between overhead conductors and underground cables. Overhead cables are all single-core and can be classified according to their structure 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, etc.

[0003] Overhead cables are typically installed over long distances and are supported by two connection points. Due to their own weight, overhead cables tend to sag. When they remain in a sag state for a long time, the internal conductors of the cable are prone to stretching and breaking. Furthermore, in the rainy and snowy weather of autumn and winter, ice will condense on the surface of the cable, which will further aggravate the sag of the overhead cable.

[0004] Therefore, it is necessary to provide a composite overhead cable to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a composite overhead cable to solve the problem in the prior art where overhead cables tend to sag due to their own weight, and prolonged sag can easily lead to the internal conductors of the cable stretching and breaking. The technical solution of this invention addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a composite overhead cable, comprising a cable body and sleeves equidistantly sleeved on the outer wall of the cable body. The cable body is provided with a reinforcing core, an aluminum alloy conductor, an insulation layer, a heat-conducting layer, a shielding layer, and an outer sheath layer in sequence from the inside to the outside. The aluminum alloy conductor is distributed at equal angles between the reinforcing core and the insulation layer and is provided in multiple layers. The insulation layer, the heat-conducting layer, the shielding layer, and the outer sheath layer are all extruded.

[0007] Preferably, sleeves are installed at equal intervals on the outer wall of the cable body, and an arc-shaped groove is opened at the bottom of the inner side of the sleeve. A buffer elastic block is installed at an equal angle at the end of the arc-shaped groove away from the cable body. An arc-shaped elastic sheet is connected to the top of the buffer elastic block, and a support elastic block is connected to both ends of the arc-shaped outer wall of the arc-shaped elastic sheet. The arc-shaped elastic sheet, the buffer elastic block, and the support elastic block provide good support for the cable body.

[0008] Preferably, the thermal conductive layer is made of thermally conductive silicone grease. The thermally conductive silicone grease can dissipate heat to the outside, effectively protect the cable body, and prevent water from freezing on the outside of the cable body, making the protection more comprehensive and the use safer and more reliable.

[0009] Preferably, both the buffer elastic block and the support elastic block are made of rubber pad material, which makes the buffer elastic block and the support elastic block have better elasticity.

[0010] Preferably, both ends of the arc-shaped groove are higher than the center height of the cable body, and the center of the uppermost buffer elastic block is at the same height as the center of the cable body. By setting the center of the buffer elastic block to be at the same height as the center of the cable body, the side of the cable body can be supported, which has good anti-sway capability.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. In this invention, after the cable body sags, the bottom of the cable body will bend upward to compress the arc-shaped elastic sheet and then the buffer elastic block. When the buffer elastic block is compressed, the support force of the buffer elastic block perpendicular to the outer periphery of the cable body will be enhanced, thus improving the support capacity for the cable body. Furthermore, when the buffer elastic block is compressed, the top center of the arc-shaped elastic sheet will be pressured downward, causing the two ends of the arc-shaped elastic sheet to tilt upward, strengthening the upward support force at both ends and thus enhancing the support capacity of the arc-shaped elastic sheet at both ends for the cable body, thereby avoiding the problem of cable body being damaged due to sagging.

[0013] 2. When the cable body is swayed by external factors, the cable body will bend to both sides. At this time, the uppermost arc-shaped elastic sheet will also be squeezed outward by the cable body. Similarly, the two ends of the arc-shaped elastic sheet will also bend up towards the cable body for support, which has good anti-sway capability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the connection between the cable body and the sleeve of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal side view of the sleeve of the present invention;

[0016] Figure 3 For the present invention Figure 2 A side view of the sleeve structure when the cable body is drooping;

[0017] Figure 4 This is a front view structural diagram of the present invention;

[0018] Figure 5 This is a schematic diagram of the internal structure of the cable body of the present invention.

[0019] In the diagram: 1. Cable body; 101. Reinforcing core; 102. Aluminum alloy conductor; 103. Insulation layer; 104. Thermal conductive layer; 105. Shielding layer; 106. Outer sheath layer; 2. Sleeve; 201. Arc groove; 202. Buffer elastic block; 203. Arc elastic sheet; 204. Support elastic block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this 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, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0022] Example 1

[0023] Please see Figure 1-5A composite overhead cable includes a cable body 1 and sleeves 2 equidistantly sleeved on the outer wall of the cable body 1. The cable body 1 is provided with a reinforcing core 101, an aluminum alloy conductor 102, an insulation layer 103, a heat-conducting layer 104, a shielding layer 105, and an outer sheath layer 106 arranged sequentially from the inside to the outside. The aluminum alloy conductor 102 is distributed at equal angles between the reinforcing core 101 and the insulation layer 103 and is arranged in multiple layers. The insulation layer 103, the heat-conducting layer 104, the shielding layer 105, and the outer sheath layer 106 are all extruded. The insulation layer 103, the shielding layer 105, and the outer sheath layer 106 provided in this application are all made of conventional materials in the art and no improvements have been made. They will not be described in detail here.

[0024] like Figure 1-5 As shown, sleeves 2 are equidistantly installed on the outer wall of the cable body 1. An arc-shaped groove 201 is formed at the bottom inner side of each sleeve 2. A buffer elastic block 202 is installed at an equal angle at the end of the arc-shaped groove 201 furthest from the cable body 1. An arc-shaped elastic sheet 203 is connected to the top of the buffer elastic block 202. Supporting elastic blocks 204 are connected to both ends of the arc-shaped outer wall of the arc-shaped elastic sheet 203. After the cable body 1 is connected by two connection point supports, the arc-shaped elastic sheet 203, the buffer elastic block 202, and the supporting elastic block 204 provide good support for the cable body 1. Due to its own weight, the cable body 1 will sag. When the cable body 1 sags, the bottom of the cable body 1 will bend upwards, compressing the arc-shaped elastic sheet 203 and then the buffer elastic block 202. When the buffer elastic block 202 is compressed, its support force perpendicular to the outer circumference of the cable body 1 will increase, thus improving its support capacity for the cable body 1. Furthermore, when the buffer elastic block 202 is compressed, the top center of the arc-shaped elastic sheet 203 will be pressured and move downwards. This will cause both ends of the arc-shaped elastic sheet 203 to tilt upwards, strengthening the upward support force at both ends and thus enhancing the support capacity of the arc-shaped elastic sheet 203 for the cable body 1, preventing the cable body 1 from being damaged due to sagging.

[0025] like Figure 1-5 As shown, the thermal conductive layer 104 is made of thermally conductive silicone grease. The thermally conductive silicone grease can dissipate heat to the outside, effectively protect the cable body 1, and prevent water from freezing on the outside of the cable body 1, making the protection more comprehensive and the use safer and more reliable.

[0026] like Figure 1-5 As shown, both the buffer elastic block 202 and the support elastic block 204 are made of rubber pad material. By using rubber pad material, the buffer elastic block 202 and the support elastic block 204 have a better elastic effect.

[0027] Example 2

[0028] like Figure 1-5 As shown, both ends of the arc-shaped groove 201 are higher than the center height of the cable body 1. The center of the uppermost buffer elastic block 202 is at the same height as the center of the cable body 1. By setting the center of the buffer elastic block 202 to be at the same height as the center of the cable body 1, the side of the cable body 1 can be supported, which can provide good anti-sway capability when the cable body 1 is swayed.

[0029] Working principle: After the cable body 1 is connected by two connection point supports, the arc-shaped elastic sheet 203, the buffer elastic block 202, and the supporting elastic block 204 provide good support for the cable body 1. Due to its own weight, the cable body 1 will sag. After the cable body 1 sags, the bottom of the cable body 1 will bend upwards, squeezing the arc-shaped elastic sheet 203 and then squeezing the buffer elastic block 202. When the buffer elastic block 202 is compressed, its supporting force perpendicular to the outer circumference of the cable body 1 will increase, thereby improving the support capacity for the cable body 1. When 202 is compressed, the top center of the arc-shaped elastic sheet 203 moves downward under pressure. At this time, the two ends of the arc-shaped elastic sheet 203 will bend upward to strengthen the upward support force at both ends, thereby enhancing the support capacity of the two ends of the arc-shaped elastic sheet 203 for the cable body 1, and avoiding the problem of damage to the cable body 1 due to sagging. When the cable body 1 is swayed by external factors, the cable body 1 will bend to both sides. At this time, the uppermost arc-shaped elastic sheet 203 will also be squeezed outward by the cable body 1. Similarly, the two ends of the arc-shaped elastic sheet 203 will also bend upward towards the cable body 1 for support, which has good anti-sway capability.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A composite overhead cable, comprising a cable body (1) and sleeves (2) equidistantly sleeved on the outer wall of the cable body (1), characterized in that: The cable body (1) is provided with a reinforcing core (101), an aluminum alloy conductor (102), an insulation layer (103), a heat-conducting layer (104), a shielding layer (105), and an outer sheath layer (106) from the inside out. The aluminum alloy conductor (102) is distributed at equal angles between the reinforcing core (101) and the insulation layer (103) and is provided in multiple layers. The insulation layer (103), the heat-conducting layer (104), the shielding layer (105), and the outer sheath layer (106) are all extruded. The heat-conducting layer (104) is made of thermally conductive silicone grease. The cable body (1) is provided with sleeves (2) installed at equal intervals on the outer wall. The bottom of the inner side of the sleeve (2) is provided with an arc groove (201). A buffer elastic block (202) is installed at an equal angle at the end of the arc groove (201) away from the cable body (1). An arc elastic sheet (203) is connected to the top of the buffer elastic block (202). Support elastic blocks (204) are connected to both ends of the arc of the outer wall of the arc elastic sheet (203). The first and last ends of the arc groove (201) are higher than the center height of the cable body (1), and the center of the uppermost buffer elastic block (202) is at the same height as the center of the cable body (1).

2. The composite overhead cable according to claim 1, characterized in that: Both the buffer elastic block (202) and the support elastic block (204) are made of rubber pad material.

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