Photovoltaic cable

Abstract

The utility model discloses a photovoltaic cable, comprising a conductor wire core and a protective jacket, the conductor wire core comprises an inner sheath, and at least one conductive wire core and at least one grounding wire core arranged in the inner sheath; the protective jacket comprises a shielding layer wrapping the inner sheath, the shielding layer is wrapped by a fireproof layer, and the fireproof layer is wrapped by an outer sheath; a waterproof layer is arranged in a gap between the inner sheath and the conductive wire core and a gap between the inner sheath and the grounding wire core, and the waterproof layer wraps the conductive wire core and the grounding wire core. The beneficial effects of the utility model are that the cable structure of the technical scheme is relatively simplified, a basis is provided for batch production, the structure is simplified, and the performance requirements of the photovoltaic cable for high temperature resistance, cold resistance, oil resistance, acid and alkali resistance, ultraviolet resistance, flame retardation, environmental protection, long service life and the like are satisfied at the same time.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a photovoltaic cable. Background Technology

[0002] With the development of the global economy, fossil fuels such as coal, oil, and natural gas are gradually failing to meet the growing demand and environmental protection requirements. Solar energy, as one of the most important clean energy sources, has been widely utilized. Photovoltaics, short for the photovoltaic effect, refers to the phenomenon where a potential difference is generated between non-uniform semiconductors or semiconductor-metal composites under sunlight. It is primarily achieved by using solar panels made of semiconductor materials such as silicon to generate direct current (DC) electricity, as seen in the ubiquitous solar cells we see in our daily lives. Currently, large-scale photovoltaic power plants are mostly built in the arid northwest regions, where the working environment is harsh, with strong winds, intense ultraviolet radiation, and large temperature differences. Photovoltaic cables, as essential power transmission tools, are required to have resistance to wind and rain, ultraviolet radiation, ozone corrosion, flame retardancy, and resistance to significant temperature changes. Therefore, it is necessary to develop a photovoltaic cable. A search revealed no identical technical solutions to this invention. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a photovoltaic cable that solves one or more of the problems in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a photovoltaic cable, the innovation of which lies in: including...

[0005] A conductor core, comprising an inner sheath and at least one conductive core and at least one grounding core disposed within the inner sheath;

[0006] The protective outer jacket includes a shielding layer covering the outer layer of the inner sheath, a fireproof layer covering the shielding layer, and an outer sheath covering the fireproof layer.

[0007] A waterproof layer is provided in the gap between the inner sheath and the conductive core and the grounding core, and the waterproof layer covers the conductive core and the grounding core.

[0008] In some embodiments, the conductive cores do not contact each other and the spacing between adjacent conductive cores is equal, with the gaps between the conductive cores being fully filled by a waterproof layer.

[0009] In some implementations, the grounding core is positioned on the inner sheath axis, with conductor cores distributed around the grounding core.

[0010] In some implementations, a gap is left between the conductive core and the grounding core, and the gap between the conductive core and the grounding core is fully filled by a waterproof layer.

[0011] In some implementations, the outer sheath has the same thickness as the inner sheath.

[0012] In some implementations, the thickness of the fireproof layer is the same as the thickness of the shielding layer.

[0013] In some implementations, the thickness of the outer sheath is the sum of the thicknesses of the fireproof layer and the shielding layer.

[0014] The beneficial effects of this utility model are: the cable structure of this technical solution is relatively simplified, providing a basis for mass production. While simplifying the structure, it meets the performance requirements of photovoltaic cables for high temperature resistance, cold resistance, oil resistance, acid and alkali resistance, ultraviolet resistance, flame retardancy and environmental protection, and long service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 This is a cross-sectional axial view of a photovoltaic cable according to this utility model.

[0017] Figure 2 This is a front view of a photovoltaic cable according to this utility model.

[0018] Figure 3 yes Figure 2 Cross-sectional view. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1 to 3As shown, this utility model embodiment includes: a photovoltaic cable, comprising a conductor core and a protective sheath; the conductor core includes an inner sheath 101 and at least one conductive core 102 and at least one grounding core 103 disposed within the inner sheath 101; the protective sheath includes a shielding layer 201 covering the outside of the inner sheath 101, the shielding layer 201 being covered by a fireproof layer 202, and the fireproof layer 202 being covered by an outer sheath 203; a waterproof layer 104 is provided in the gap between the inner sheath 101 and the conductive core 102 and the grounding core 103, the waterproof layer 104 covering the conductive core 102 and the grounding core 103, wherein the average particle size of the AZO nanoparticles in the shielding layer 201 is 20-30 nm, and the silica nanoparticles in the inner sheath 101 are... The average particle size is 50-60nm. The fireproof layer 202 is made of polyphenylene sulfone terephthalamide fiber fabric, and the water-blocking layer is a thermoplastic elastomer with electrostatic sprayed water-blocking powder. The photovoltaic cable with the above structure meets the performance requirements of EN50618, including high temperature resistance, cold resistance, oil resistance, acid and alkali resistance, ultraviolet resistance, flame retardancy, environmental protection, and long service life. It is mainly used in harsh environmental climatic conditions. It also meets the rated voltage U0 / U: AC600V / 1000DC1800V; operating temperature / ℃, -40~+90: allowable short circuit temperature within 5s is 200℃; high temperature pressure test (140℃, 4h, k=0.6) maximum penetration depth ≤50%, voltage test without breakdown; dynamic penetration test (room temperature 1N / S, 4 times) passed; the cable has low smoke and halogen-free composite properties.

[0021] Specifically, the conductive cores 102 do not contact each other and the spacing between adjacent conductive cores 102 is equal. The gaps between the conductive cores 102 are fully filled by the waterproof layer 104. The above structure can prevent the conductive cores 102 from interfering with each other. At the same time, the waterproof layer 104 can also play a role in heat insulation and heat dissipation, preventing the photovoltaic cable from getting too hot.

[0022] Specifically, the grounding core 103 is set on the axis of the inner sheath 101, and the conductor cores are distributed around the grounding core 103. There is a gap between the conductor core 102 and the grounding core 103. The gap between the conductor core 102 and the grounding core 103 is fully filled by the waterproof layer 104. The above structure can avoid the grounding core 103 from being interfered with by the conductor cores, thereby improving the grounding effect.

[0023] Specifically, the outer sheath 203 has the same thickness as the inner sheath 101, the fireproof layer 202 has the same thickness as the shielding layer 201, and the outer sheath 203 has the sum of the thicknesses of the fireproof layer 202 and the shielding layer 201. The thickness of the outer sheath 203 in the above structure can protect the integrity of the fireproof layer 202 and maximize the effectiveness of the fireproof layer 202 in the event of a fire.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A photovoltaic cable, characterized in that: include The conductor core includes an inner sheath (101) and at least one conductive core (102) and at least one grounding core (103) disposed within the inner sheath (101); The protective jacket includes a shielding layer (201) covering the outside of the inner sheath (101), the shielding layer (201) is covered with a fireproof layer (202), and the fireproof layer (202) is covered with an outer sheath (203). A waterproof layer (104) is provided in the gap between the inner sheath (101) and the conductive core (102) and the grounding core (103), and the waterproof layer (104) covers the conductive core (102) and the grounding core (103).

2. A photovoltaic cable according to claim 1, characterized in that: The conductive cores (102) do not contact each other and the spacing between adjacent conductive cores (102) is equal. The gap between the conductive cores (102) is fully filled by the waterproof layer (104).

3. A photovoltaic cable according to claim 1, characterized in that: The grounding core (103) is disposed on the axis of the inner sheath (101), and the conductor cores are distributed around the grounding core (103).

4. A photovoltaic cable according to claim 3, characterized in that: A gap is left between the conductive core (102) and the grounding core (103), and the gap between the conductive core (102) and the grounding core (103) is fully filled by a waterproof layer (104).

5. A photovoltaic cable according to claim 1, characterized in that: The thickness of the outer sheath (203) is the same as the thickness of the inner sheath (101).

6. A photovoltaic cable according to claim 1, characterized in that: The thickness of the fireproof layer (202) is the same as the thickness of the shielding layer (201).

7. A photovoltaic cable according to claim 1, characterized in that: The thickness of the outer sheath (203) is the sum of the thicknesses of the fireproof layer (202) and the shielding layer (201).

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