Photovoltaic cable for sea surface wind power system

Abstract

The utility model discloses a photovoltaic cable for a sea surface wind power system, which comprises a copper conductor formed by twisting a plurality of copper conductors, the surface of the copper conductor is coated with an insulating layer, an inner sheath layer is coated on the outer surface of the insulating layer, and an outer sheath layer is coated on the outer surface of the inner sheath layer; a grid weaving layer is arranged between the outer sheath layer and the inner sheath layer, the grid weaving layer is formed by weaving a plurality of aramid fibers and a plurality of metal wires in a warp and weft mode, the length direction of the aramid fibers is parallel to the axial direction of the cable, the aramid fibers are arranged in the circumferential direction of the cable at equal intervals, the length direction of the metal wires is the circumferential direction of the cable, and the length direction of the metal wires is parallel to the axial direction of the cable. The plurality of metal wires are arranged at equal intervals along the axial direction of the cable. According to the photovoltaic cable for the sea surface wind power system, the tensile performance of the cable is improved, the cable is convenient to drag, and the anti-electromagnetic interference performance of the cable is improved.

Description

Technical Field

[0001] This utility model relates to a photovoltaic cable, and more particularly to a photovoltaic cable for offshore wind power systems. Background Technology

[0002] Offshore photovoltaic (PV) power plants are a new type of PV power plant that utilizes floating structures to support photovoltaic modules. Currently, many countries, such as Singapore and Japan, have floating array projects with ample water resources. The advantages of offshore PV power plants are that they do not occupy land area and can fully utilize sea surface; the sea surface cools and reflects PV modules, and the radiation from the sea surface is not affected by topography, resulting in higher power generation than ground-based power plants; the location of offshore power plants is less dusty, easier to clean, and avoids problems caused by shading from weeds and other vegetation. However, existing PV cables are prone to damage when towed. Summary of the Invention

[0003] This utility model provides a photovoltaic cable for offshore wind power systems. This photovoltaic cable for offshore wind power systems not only improves the tensile strength of the cable and facilitates cable dragging, but also helps to improve the cable's anti-electromagnetic interference performance.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a photovoltaic cable for offshore wind power systems, comprising a copper conductor formed by twisting several copper wires together, the surface of which is covered with an insulation layer, an inner sheath layer covering the outer surface of the insulation layer, and an outer sheath layer covering the outer surface of the inner sheath layer.

[0005] A mesh braided layer is provided between the outer sheath layer and the inner sheath layer. This mesh braided layer is made of several aramid filaments and several metal wires woven together in warp and weft. The length direction of the aramid filaments is parallel to the cable axis, and the several aramid filaments are equally spaced along the circumference of the cable. The length direction of the metal wires is the circumference direction of the cable, and the several metal wires are equally spaced along the cable axis.

[0006] The above technical solution is further improved as follows:

[0007] 1. In the above scheme, the metal wire is a copper wire or an aluminum wire.

[0008] 2. In the above scheme, the thickness of the outer sheath layer is greater than the thickness of the inner sheath layer.

[0009] 3. In the above scheme, the thickness of the inner sheath layer is 2 to 3 times the thickness of the insulation layer.

[0010] 4. In the above scheme, a wrapping tape is wound around the outer surface of the copper conductor.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] This utility model relates to a photovoltaic cable for offshore wind power systems. A braided mesh layer is provided between the outer and inner sheath layers. This braided mesh layer is made of several aramid filaments and several metal wires woven together in warp and weft. The length direction of the aramid filaments is parallel to the cable axis, and the aramid filaments are evenly spaced along the circumference of the cable. The length direction of the metal wires is the circumference of the cable, and the metal wires are evenly spaced along the cable axis. This design improves the cable's tensile strength, facilitates cable dragging, and also enhances the cable's electromagnetic interference resistance. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the structure of the photovoltaic cable used in the offshore wind power system of this utility model.

[0014] In the above attached diagram: 1. Copper conductor; 2. Insulation layer; 3. Inner sheath layer; 4. Copper wire; 5. Outer sheath layer; 6. Braided mesh layer; 7. Wrapping tape. Detailed Implementation

[0015] The present invention will be further described below with reference to embodiments:

[0016] Example 1: A photovoltaic cable for an offshore wind power system includes a copper conductor 1 formed by twisting several copper wires 4 together. The surface of the copper conductor 1 is covered with an insulation layer 2, an inner sheath layer 3 is covered with the outer surface of the insulation layer 2, and an outer sheath layer 5 is covered with the outer surface of the inner sheath layer 3.

[0017] A mesh braided layer 6 is provided between the outer sheath layer 5 and the inner sheath layer 3. This mesh braided layer 6 is made of several aramid filaments and several metal wires woven together. The length direction of the aramid filaments is parallel to the cable axis, and the several aramid filaments are equally spaced along the circumference of the cable. The length direction of the metal wires is the circumference direction of the cable, and the several metal wires are equally spaced along the cable axis.

[0018] The aforementioned metal wire is aluminum wire.

[0019] The thickness of the outer sheath layer 5 is greater than the thickness of the inner sheath layer 3.

[0020] The thickness of the inner sheath layer 3 is twice the thickness of the insulation layer 2.

[0021] A wrapping tape 7 is wrapped around the outer surface of the copper conductor 1.

[0022] Example 2: A photovoltaic cable for an offshore wind power system includes a copper conductor 1 formed by twisting several copper wires 4 together. The surface of the copper conductor 1 is covered with an insulation layer 2, an inner sheath layer 3 is covered with the outer surface of the insulation layer 2, and an outer sheath layer 5 is covered with the outer surface of the inner sheath layer 3.

[0023] A mesh braided layer 6 is provided between the outer sheath layer 5 and the inner sheath layer 3. This mesh braided layer 6 is made of several aramid filaments and several metal wires woven together. The length direction of the aramid filaments is parallel to the cable axis, and the several aramid filaments are equally spaced along the circumference of the cable. The length direction of the metal wires is the circumference direction of the cable, and the several metal wires are equally spaced along the cable axis.

[0024] The aforementioned metal wire is copper wire.

[0025] The thickness of the outer sheath layer 5 is greater than the thickness of the inner sheath layer 3.

[0026] The thickness of the inner sheath layer 3 is 2.5 times the thickness of the insulation layer 2.

[0027] A wrapping tape 7 is wrapped around the outer surface of the copper conductor 1.

[0028] When using the photovoltaic cable for the above-mentioned offshore wind power system, a mesh braided layer is provided between the outer sheath and the inner sheath. This mesh braided layer is made of several aramid filaments and several metal wires woven together in warp and weft. The length direction of the aramid filaments is parallel to the cable axis, and the several aramid filaments are evenly spaced along the circumference of the cable. The length direction of the metal wires is the circumference direction of the cable, and the several metal wires are evenly spaced along the cable axis. This not only improves the tensile strength of the cable and facilitates the dragging of the cable, but also helps to improve the cable's electromagnetic interference resistance.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A photovoltaic cable for an offshore wind power system, characterized in that: The copper conductor (1) consists of several copper wires (4) twisted together. The surface of the copper conductor (1) is covered with an insulating layer (2), an inner sheath layer (3) is covered on the outer surface of the insulating layer (2), and an outer sheath layer (5) is covered on the outer surface of the inner sheath layer (3). A mesh braided layer (6) is provided between the outer sheath layer (5) and the inner sheath layer (3). This mesh braided layer (6) is made of several aramid filaments and several metal wires woven together. The length direction of the aramid filaments is parallel to the cable axis. The several aramid filaments are arranged at equal intervals along the circumference of the cable. The length direction of the metal wires is the circumference direction of the cable. The several metal wires are arranged at equal intervals along the cable axis.

2. The photovoltaic cable for offshore wind power systems according to claim 1, characterized in that: The metal wire is either copper or aluminum.

3. The photovoltaic cable for offshore wind power systems according to claim 1, characterized in that: The thickness of the outer sheath layer (5) is greater than the thickness of the inner sheath layer (3).

4. The photovoltaic cable for offshore wind power systems according to claim 1, characterized in that: The thickness of the inner sheath layer (3) is 2 to 3 times the thickness of the insulation layer (2).

5. The photovoltaic cable for offshore wind power systems according to claim 1, characterized in that: A wrapping tape (7) is wrapped around the outer surface of the copper conductor (1).

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