Novel light cable for wind power generation

Abstract

The utility model discloses a novel light cable for wind power generation, which relates to the technical field of cables and comprises a conductive core wire, a first insulating layer is wrapped on the outer side of the conductive core wire, and the first insulating layer is made of temperature-resistant and wear-resistant materials; a reinforcing layer is arranged on the periphery of the first insulating layer, and the reinforcing layer comprises a fiber reinforced material; the reinforcing layer is coated with a second protective layer; according to the technical scheme provided by the utility model, the reinforcing layer is formed by mixing and weaving the aramid fibers and the glass fibers, so that the strength of the cable is ensured, the weight is reduced, the transportation and installation cost is greatly reduced, and the reinforcing layer is additionally arranged in the cable structure, so that the service life of the cable is prolonged. The tensile strength and the overall mechanical strength of the cable are remarkably improved by adopting the reinforcing layer formed by mixing and weaving the aramid fibers and the glass fibers, and meanwhile, the conductive core wires have the elliptical cross sections, so that the eddy current loss is reduced, and the electrical transmission efficiency of the cable is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a novel lightweight cable for wind power generation. Background Technology

[0002] As the global energy structure accelerates its transition to renewable energy, wind power, as a clean and sustainable energy source, has been widely adopted. Wind power generation equipment is typically installed in open areas or offshore, where the environment is often harsh and wind speeds fluctuate frequently, placing extremely high demands on power transmission cables. While existing cables can meet basic power transmission requirements, they have limitations in terms of weight, mechanical strength, and weather resistance.

[0003] Traditional cables are often heavy due to material and technological limitations, which not only increases transportation and installation costs but also places an additional burden on wind power equipment. Wind power equipment is subjected to strong wind impacts during operation, and cables need sufficient mechanical strength to withstand these external forces, but traditional cables perform poorly in this regard. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of lightweight cable for wind power generation, so as to solve the problems in the background art.

[0005] In view of this, the present invention provides a novel lightweight cable for wind power generation, comprising:

[0006] A conductive core wire, with a first insulating layer wrapped around its outer side, the first insulating layer being made of a temperature-resistant and wear-resistant material;

[0007] A reinforcing layer is provided around the first insulating layer, and the reinforcing layer comprises fiber-reinforced material;

[0008] A second protective layer is wrapped around the outside of the reinforcing layer.

[0009] Optionally, the conductive core wire is made of copper or a copper alloy, and the cross-sectional shape of the conductive core wire is elliptical.

[0010] Optionally, the first insulating layer uses cross-linked polyethylene as the insulating material, with a thickness of 0.8 mm to 1.2 mm.

[0011] Optionally, the reinforcing layer is woven from a mixture of aramid fibers and glass fibers, wherein the content of aramid fibers accounts for more than 50% of the total content.

[0012] Optionally, the second protective layer is made of polyurethane material.

[0013] Optionally, it also includes a shielding layer located between the conductive core wire and the first insulation layer, the shielding layer being made of woven metal wire and coated with an anti-corrosion coating.

[0014] Optionally, it also includes a shielding layer located between the conductive core wire and the first insulation layer, the shielding layer being made of woven metal wire and coated with an anti-corrosion coating.

[0015] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0016] 1. This utility model discloses a novel lightweight cable for wind power generation. By using a reinforcing layer made of a mixture of aramid fiber and glass fiber, the cable strength is ensured while also reducing weight, greatly reducing transportation and installation costs, and also reducing the load on wind power generation equipment. Furthermore, by adding a reinforcing layer to the cable structure, especially a reinforcing layer made of a mixture of aramid fiber and glass fiber, the tensile strength and overall mechanical strength of the cable are significantly improved, ensuring the reliability of the cable in harsh environments. At the same time, the conductive core wire has an elliptical cross-section to reduce eddy current loss and improve the electrical transmission efficiency of the cable.

[0017] 2. This utility model discloses a novel lightweight cable for wind power generation, which facilitates rapid connection between multiple cables by incorporating connectors. The connectors have tear-open slots on their end faces, allowing for convenient and quick cable disassembly during on-site installation.

[0018] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Explanation of reference numerals in the attached diagram: 1. Conductive core wire; 2. First insulation layer; 3. Reinforcing layer; 4. Second protective layer; 5. Shielding layer; 6. Color-coded strip; 7. Connector; 71. Tear-opening groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0025] The following describes in detail, with reference to the accompanying drawings, a novel lightweight cable for wind power generation according to an embodiment of this utility model.

[0026] Example

[0027] For easier understanding, please refer to Figures 1 to 3 An embodiment of a novel lightweight cable for wind power generation provided by this utility model includes:

[0028] The conductive core 1 is made of a high-conductivity material, such as pure copper or a copper alloy. Pure copper has excellent conductivity, while copper alloys provide additional mechanical strength while ensuring good conductivity. The cross-sectional shape of the conductive core 1 is set to elliptical instead of the traditional circular shape. The elliptical cross-section can effectively reduce the eddy current effect generated by alternating current, thereby reducing energy consumption. In addition, this design can increase the flexibility of the cable, making it easier to bend and install.

[0029] The first insulation layer 2 is made of cross-linked polyethylene (XLPE). XLPE is widely used in high-voltage cables due to its excellent electrical properties, high-temperature resistance, and aging resistance. During the manufacturing process, the XLPE in the first insulation layer 2 is cross-linked using chemical or physical methods to enhance its heat resistance and mechanical strength. The thickness of the first insulation layer 2 is set between 0.8 mm and 1.2 mm, providing sufficient insulation protection without being too thick and affecting the flexibility of the cable.

[0030] Reinforcing layer 3 is woven with a blend of aramid and glass fibers. Aramid fibers are known for their high strength, high temperature resistance, and abrasion resistance, while glass fibers provide additional rigidity and stability. To achieve optimal mechanical properties, the aramid fiber content in reinforcing layer 3 must account for more than 50% of the total. This blended weaving method ensures cable strength while also taking into account weight considerations.

[0031] In some embodiments, the second protective layer 4 is made of polyurethane (PU) material, with added anti-aging agents and UV-resistant additives to improve the cable's weather resistance. The thickness of the second protective layer 4 is set between 1.2 mm and 1.8 mm to ensure that the cable maintains good waterproof and UV-resistant performance even under harsh environmental conditions.

[0032] In some embodiments, a shielding layer 5 made of braided metal wire is added between the conductive core 1 and the first insulation layer 2. The outer layer of the metal wire is coated with an anti-corrosion coating to prevent external electromagnetic interference. The shielding layer 5 not only reduces the impact of electromagnetic interference on the internal signal transmission of the cable, but also protects the internal components from corrosion and extends the service life of the cable.

[0033] To facilitate identification of the cable's function, the outer surface of the second protective layer 4 is provided with color-coded strips 6. These strips are made of weather-resistant materials that resist ultraviolet radiation and will not fade. The strips are directly attached to the cable surface using laser printing technology, ensuring they remain clearly identifiable under various environmental conditions.

[0034] Connectors 7 are installed between multiple cables to facilitate quick connection between them. The end face of the connector 7 is provided with a tear-open groove 71, which allows for convenient and quick disassembly of the cables during on-site installation.

[0035] Working Principle: The conductive core 1 is the core of the cable, responsible for conducting electrical energy converted from the wind turbine. By employing an elliptical cross-section, the conductive core 1 reduces eddy current losses in AC applications, thereby improving power transmission efficiency. The first insulation layer 2 primarily provides insulation protection for the conductive core 1, preventing current leakage. It offers excellent electrical insulation performance and high temperature resistance, adapting to the operating temperature range of wind power equipment. The cross-linked XLPE material forms a three-dimensional network structure, improving the material's aging resistance and extending the cable's service life. The reinforcing layer 3 significantly improves the cable's mechanical strength, making it less prone to breakage under wind and other external forces in wind power equipment. The second protective layer 4 protects the internal structure from moisture intrusion and UV radiation damage. It maintains stable and reliable performance even under extreme weather conditions, such as low temperatures, high temperatures, and strong winds. The shielding layer 5 effectively reduces electromagnetic interference from the outside, ensuring the quality of signal transmission within the cable. Color-coded strips 6 distinguish cables with different functions, enabling installers to quickly identify and correctly connect cables, avoiding problems caused by incorrect connections.

[0036] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A novel lightweight cable for wind power generation, characterized in that: include: A conductive core wire (1) is wrapped with a first insulating layer (2) on the outside of the conductive core wire (1), and the first insulating layer (2) is made of a temperature-resistant and wear-resistant material; A reinforcing layer (3) is provided around the first insulating layer (2), and the reinforcing layer (3) contains fiber-reinforced material; A second protective layer (4) is wrapped around the outside of the reinforcing layer (3); The conductive core wire (1) is made of copper or copper alloy, and the cross-sectional shape of the conductive core wire (1) is elliptical. The first insulating layer (2) uses cross-linked polyethylene as the insulating material and has a thickness of 0.8 mm to 1.2 mm; The reinforcing layer (3) is woven from a mixture of aramid fibers and glass fibers, wherein the content of aramid fibers accounts for more than 50% of the total content; The second protective layer (4) is made of polyurethane (PU) material; It also includes a shielding layer (5) located between the conductive core wire (1) and the first insulating layer (2), the shielding layer (5) being made of woven metal wire and coated with an anti-corrosion coating; The outer surface of the second protective layer (4) is coated with a color-coded strip (6), which is made of a weather-resistant material.

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