Anti-aging double-insulated wire

Abstract

The utility model relates to an anti-aging double-insulated wire, which comprises a central wire core, and a mica tape layer, a cross-linked polyethylene insulating layer, a metal shielding layer, a tensile strengthening layer, an anti-aging layer and an outer sheath are sequentially arranged outside the central wire core. And a graphite powder filling layer is arranged between the central wire core and the mica tape layer. The anti-aging layer comprises a polypropylene fiber layer, a polystyrene fiber layer and a polyacrylonitrile fiber layer which are sequentially arranged from inside to outside. The tensile strengthening layer is filled with a plurality of aramid fiber tensile ropes. And a waterproof yarn layer is arranged between the tensile strengthening layer and the anti-aging layer. And an anti-ultraviolet coating is arranged outside the outer sheath. And a wear-resistant coating is arranged outside the uvioresistant coating. According to the utility model, the insulation performance is good, the strength is high, the functions are rich, through the arrangement of the anti-aging layer, the anti-aging performance of the wire is improved, the copper wires in the central wire core can be lubricated without influencing the conductive performance, and the phenomenon that the resistance is increased due to the stretching of the copper wires in the bending process of the wire is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to an anti-aging double-insulated electric wire. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing.

[0003] The surface of existing cables is covered with an insulating layer for external protection. However, because cables are generally exposed to the outdoors for a long time, under the condition of long-term direct sunlight or exposure to wind, rain and snow, the external insulation layer will quickly age, allowing external liquids to enter the cable. In more serious cases, it may cause the cable to short-circuit. The overall cable has poor anti-aging ability. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the prior art and provide an anti-aging double-insulated electric wire.

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

[0006] An anti-aging double-insulated electric wire comprises a central wire core, and a mica tape layer, a cross-linked polyethylene insulation layer, a metal shielding layer, a tensile strengthening layer, an anti-aging layer and an outer sheath are sequentially arranged outside the central wire core;

[0007] A graphite powder filling layer is arranged between the center wire core and the mica tape layer.

[0008] The anti-aging layer comprises a polypropylene fiber layer, a polystyrene fiber layer and a polyacrylonitrile fiber layer which are sequentially arranged from the inside to the outside.

[0009] The tensile reinforcement layer is filled with a plurality of aramid fiber tensile ropes.

[0010] A waterproof yarn layer is arranged between the tensile reinforcement layer and the anti-aging layer.

[0011] The outer sheath is provided with a UV-resistant coating.

[0012] UV-resistant coating with abrasion-resistant coating on the outside.

[0013] The beneficial effects of the utility model are: the utility model has good insulation performance, high strength, and rich functions. Through the setting of the anti-aging layer, the anti-aging performance of the wire is improved. At the same time, the copper wires in the center wire core can be lubricated without affecting the conductive performance, thereby reducing the stretching of the copper wire during the bending process of the wire and increasing the resistance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] In the figure: 1-center line core; 2-mica tape layer; 3-cross-linked polyethylene insulation layer; 4-metal shielding layer; 5-tensile reinforcement layer; 6-anti-aging layer; 7-outer sheath; 8-graphite powder filling layer; 9-aramid fiber tensile rope; 10-waterproof yarn layer; 11-anti-ultraviolet coating; 12-wear-resistant coating;

[0016] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] An anti-aging double-insulated wire, such as Figure 1 As shown, it comprises a central core 1, and a mica tape layer 2, a cross-linked polyethylene insulation layer 3, a metal shielding layer 4, a tensile strengthening layer 5, an anti-aging layer 6 and an outer sheath 7 are sequentially arranged outside the central core 1.

[0022] The center line core 1 is formed by twisting a number of conductor copper wires.

[0023] The mica tape layer 2 provides a first layer of insulation, and the cross-linked polyethylene insulation layer 3 provides a second layer of insulation, thereby improving the overall insulation performance of the wire.

[0024] A graphite powder filling layer 8 is provided between the central wire core 1 and the mica tape layer 2, and the mesh number of the graphite filled in the graphite powder filling layer 8 is 600. Without affecting the conductive performance, the copper wires in the central wire core 1 are lubricated to reduce the phenomenon of increased resistance due to the stretching of the copper wires during the bending process of the wire.

[0025] The anti-aging layer 6 includes a polypropylene fiber layer, a polystyrene fiber layer and a polyacrylonitrile fiber layer which are sequentially arranged from the inside to the outside.

[0026] The thickness of the polypropylene fiber layer is less than that of the polystyrene fiber layer, and the thickness of the polystyrene fiber layer is less than that of the polyacrylonitrile fiber layer. The setting of the polypropylene fiber layer has the characteristics of high strength, good elasticity, wear resistance, corrosion resistance, electrical insulation, warmth retention and anti-static properties. The setting of the polystyrene fiber layer has the characteristics of good thermal insulation, UV resistance, flame retardancy and wear resistance. The setting of the polyacrylonitrile fiber layer has the characteristics of high strength, good elasticity, electrical insulation, warmth retention, wear resistance and corrosion resistance.

[0027] The tensile reinforcement layer 5 is filled with a number of aramid fiber tensile ropes 9. The aramid fiber tensile ropes 9 can improve the tensile performance of the cable and have a higher strength.

[0028] A waterproof yarn layer 10 is provided between the tensile reinforcement layer 5 and the anti-aging layer 6 .

[0029] The outer sheath 7 is provided with an anti-ultraviolet coating 11 .

[0030] The anti-ultraviolet coating 11 is provided with a wear-resistant coating 12 outside.

[0031] The waterproof yarn layer 10, the anti-ultraviolet coating 11 and the wear-resistant coating 12 can make the electric wire waterproof, anti-ultraviolet and wear-resistant, with stronger functionality, wider application occasions and longer service life.

[0032] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An anti-aging double-insulated wire, It is characterized in that It comprises a central core (1), and a mica tape layer (2), a cross-linked polyethylene insulation layer (3), a metal shielding layer (4), a tensile strengthening layer (5), an anti-aging layer (6) and an outer sheath (7) are sequentially arranged outside the central core (1); A graphite powder filling layer (8) is provided between the central wire core (1) and the mica tape layer (2).

2. The anti-aging double-insulated wire according to claim 1, It is characterized in that The anti-aging layer (6) comprises a polypropylene fiber layer, a polystyrene fiber layer and a polyacrylonitrile fiber layer which are arranged in sequence from the inside to the outside.

3. The anti-aging double-insulated wire according to claim 2, It is characterized in that The tensile reinforcement layer (5) is filled with a plurality of aramid fiber tensile ropes (9).

4. The anti-aging double-insulated wire according to claim 3, It is characterized in that A waterproof yarn layer (10) is provided between the tensile reinforcement layer (5) and the anti-aging layer (6).

5. The anti-aging double-insulated wire according to claim 4, It is characterized in that An anti-ultraviolet coating (11) is provided outside the outer sheath (7).

6. The anti-aging double-insulated wire according to claim 5, It is characterized in that A wear-resistant coating (12) is provided outside the anti-ultraviolet coating (11).

7. The anti-aging double-insulated wire according to claim 6, It is characterized in that The mesh number of the graphite filled in the graphite powder filling layer (8) is 600.

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