Integrated aluminum core insulation overhead cable

Abstract

The utility model relates to the technical field of aerial cables, in particular to an integrated aluminum core insulating aerial cable, which comprises an inner sheath, a shielding layer is arranged on the outer surface of the inner sheath, and an outer sheath is arranged on the outer surface of the shielding layer. Conductors are arranged in the inner sheath, and the conductors are distributed in a circumferential array; the conductor comprises a guide core, an insulating layer is arranged on the outer surface of the guide core, elastic protruding blocks are arranged on the outer surface of the insulating layer, the protruding blocks are arranged in a crossed mode, and grooves matched with the protruding blocks are formed by the adjacent protruding blocks. And a filling layer is arranged between the inner sheath and each conductor. Through the arrangement of the convex blocks, when the cable is impacted by external force, the conductors in the cable extrude each other, the convex blocks arranged outside the conductors can effectively buffer the extrusion force and weaken the damage of extrusion to the internal conductors, and the convex blocks can weaken the friction generated by mutual sliding among the conductors, so that the damage of the conductors is further avoided; the anti-bending capability of the aerial cable is effectively improved, and the service life of the aerial cable is prolonged.

Description

Technical Field

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

[0002] Overhead cables are overhead conductors equipped with an insulating layer and a protective outer sheath. They are a special type of cable manufactured using a production process similar to that of cross-linked cables. They are a new way of transmitting electricity between overhead conductors and underground cables. Overhead cables can be divided into hard aluminum wire structures, hard drawn copper wire structures, aluminum alloy wire structures, steel core or aluminum alloy core support structures, and self-supporting three-core composite structures (the wire core can be hard aluminum or hard copper wires) according to their different structures. They have the main characteristics of high power supply reliability, good power supply safety, convenient installation and maintenance, and reasonable economy.

[0003] Existing overhead cables have poor bending resistance. During use, overhead cables are prone to bending when impacted by external forces. The bending force and impact force on the cable core may cause the cable core to be damaged or broken, seriously affecting the normal use of the overhead cables. Utility Model Content

[0004] The utility model aims to provide an integrated aluminum core insulated overhead cable to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An integrated aluminum core insulated overhead cable comprises an inner sheath, a shielding layer is provided on the outer surface of the inner sheath, and an outer sheath is provided on the outer surface of the shielding layer; a conductor is provided in the inner sheath, and each of the conductors is distributed in a circular array; the conductor comprises a core, an insulating layer is provided on the outer surface of the core, and elastic bumps are provided on the outer surface of the insulating layer, and each of the bumps is cross-arranged, and each adjacent bump forms a groove matched with the bump; a filling layer is also provided between the inner sheath and each conductor.

[0007] Furthermore, a waterproof layer is provided between the shielding layer and the outer sheath.

[0008] Furthermore, the waterproof layer is a synthetic polymer waterproof coating.

[0009] Furthermore, the insulating layer is made of rubber.

[0010] Furthermore, the inner sheath and the outer sheath are both made of cross-linked polyvinyl chloride.

[0011] Furthermore, the outer surface of the outer sheath is provided with anti-slip grooves.

[0012] Furthermore, the shielding layer is made of steel mesh.

[0013] Furthermore, the filling layer is carbon fiber filaments.

[0014] In the above technical solution, the utility model provides an integrated aluminum core insulated overhead cable with the following beneficial effects:

[0015] By setting the protrusions, when the cable is impacted by external force, the conductors inside the cable are squeezed against each other, and the protrusions set outside each conductor can effectively buffer the squeezing force and reduce the damage to the internal conductor caused by the squeezing. The protrusions can also reduce the friction caused by the mutual sliding between the conductors, further avoiding damage to the conductors, effectively improving the bending resistance of the overhead cable and increasing the service life of the overhead cable.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic cross-sectional view of an embodiment of the present invention;

[0020] Figure 2 The overall structural diagram provided for the embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the enlarged structure of the local area provided in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Inner sheath; 11. Shielding layer; 12. Outer sheath; 2. Conductor; 21. Core conductor; 22. Insulation layer; 23. Bump; 24. Filling layer; 3. Waterproof layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0025] See also Figure 1-3 An integrated aluminum core insulated overhead cable comprises an inner sheath 1, a shielding layer 11 is provided on the outer surface of the inner sheath 1, and an outer sheath 12 is provided on the outer surface of the shielding layer 11; a conductor 2 is provided in the inner sheath 1, and each of the conductors 2 is distributed in a circular array; the conductor 2 comprises a core guide 21, an insulating layer 22 is provided on the outer surface of the core guide 21, and elastic bumps 23 are provided on the outer surface of the insulating layer 22, and each of the bumps 23 is cross-arranged, and each adjacent bump 23 forms a groove matched with the bump 23; a filling layer 24 is also provided between the inner sheath 1 and each of the conductors 2.

[0026] By setting the protrusion 23, when the cable is impacted by external force, the conductors 2 inside the cable are squeezed against each other, and the protrusions 23 set outside each conductor 2 can effectively buffer the squeezing force, reduce the damage to the internal conductor 2 caused by the squeezing, and the protrusion 23 can also reduce the friction caused by the mutual sliding between the conductors 2, further avoiding damage to the conductor 2, effectively improving the bending resistance of the overhead cable, and increasing the service life of the overhead cable.

[0027] Furthermore, a waterproof layer 3 is provided between the shielding layer 11 and the outer sheath 12. The waterproof layer 3 is a synthetic polymer waterproof coating film, which prevents water from penetrating and aging the overhead cable, thereby increasing its service life.

[0028] Furthermore, the insulating layer 22 is made of rubber.

[0029] Furthermore, the inner sheath 1 and the outer sheath 12 are both made of cross-linked polyvinyl chloride, which improves the corrosion resistance, heat resistance, tensile strength, compression resistance and bending resistance of the cable.

[0030] Furthermore, the outer surface of the outer sheath 12 is provided with anti-slip grooves.

[0031] Furthermore, the shielding layer 11 is made of steel mesh.

[0032] Furthermore, the filling layer 24 is made of carbon fiber filaments, which are high in strength and light in weight, and also have good heat resistance and can work normally in a high temperature environment.

[0033] Working principle: When the cable is impacted by external force, the conductors 2 inside the cable are squeezed against each other, and the bumps 23 arranged outside each conductor 2 can effectively buffer the squeezing force and reduce the damage to the internal conductor 2 caused by squeezing. The bumps 23 can also reduce the friction caused by the mutual sliding of the conductors 2, further avoiding damage to the conductors 2, effectively improving the bending resistance of the overhead cable and prolonging the service life of the overhead cable.

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated aluminum core insulated overhead cable, characterized in that: It comprises an inner sheath (1), the outer surface of the inner sheath (1) is provided with a shielding layer (11), and the outer surface of the shielding layer (11) is provided with an outer sheath (12); The inner sheath (1) is provided with a conductor (2), and each of the conductors (2) is distributed in a circular array; The conductor (2) comprises a conductor core (21), an insulating layer (22) is provided on the outer surface of the conductor core (21), elastic bumps (23) are provided on the outer surface of the insulating layer (22), the bumps (23) are arranged in a cross-shaped manner, and adjacent bumps (23) form grooves that match the bumps (23); A filling layer (24) is also provided between the inner sheath (1) and each conductor (2).

2. The integrated aluminum core insulated overhead cable according to claim 1, characterized in that: A waterproof layer (3) is also provided between the shielding layer (11) and the outer sheath (12).

3. The integrated aluminum core insulated overhead cable according to claim 2, characterized in that: The waterproof layer (3) is a synthetic polymer waterproof coating.

4. The integrated aluminum core insulated overhead cable according to claim 1, characterized in that: The insulating layer (22) is made of rubber.

5. The integrated aluminum core insulated overhead cable according to claim 1, characterized in that: The inner sheath (1) and the outer sheath (12) are both made of cross-linked polyvinyl chloride.

6. The integrated aluminum core insulated overhead cable according to claim 5, characterized in that: The outer surface of the outer sheath (12) is provided with anti-slip grooves.

7. The integrated aluminum core insulated overhead cable according to claim 1, characterized in that: The shielding layer (11) is made of steel mesh.

8. The integrated aluminum core insulated overhead cable according to claim 1, characterized in that: The filling layer (24) is carbon fiber filaments.

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