Offshore anti-dragging photovoltaic cable

Abstract

The utility model relates to the technical field of photovoltaic cables, in particular to an offshore anti-dragging photovoltaic cable, which comprises a cable core. A reinforcing structure is arranged on the outer side of the cable core, the reinforcing structure comprises a support, the support sleeves the outer side of the cable core, the inner side of the support is filled with flame-retardant filler, and a steel wire is arranged in the middle of the inner side of the support in a penetrating manner; a protection structure is arranged on the outer side of the reinforcing structure and comprises an inner corrosion-resistant layer, the inner corrosion-resistant layer wraps the outer wall of the support, an inner wear-resistant layer wraps the outer wall of the inner corrosion-resistant layer, and an outer corrosion-resistant layer wraps the outer wall of the inner wear-resistant layer. According to the utility model, through the arrangement of the support, the three groups of cable cores can be isolated from one another and are arranged at 120 degrees, so that magnetic fields can be mutually offset, the generation of neighbor effect is reduced, and meanwhile, the three groups of cable cores are arranged around the steel wire, so that the tensile property of the cable can be enhanced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cables, in particular to an anti-drag photovoltaic cable for use at sea. Background Art

[0002] Photovoltaic cables are an indispensable part of solar photovoltaic power generation systems. Usually, the low-voltage direct current generated by photovoltaic power generation is converted into alternating current and then output. The cable connecting the photovoltaic module and the AC / DC inverter is the photovoltaic cable.

[0003] In this regard, China's patent application number: CN202222268774.5 discloses a new type of fire-resistant and tensile photovoltaic cable, including a cable body, the outer surface of the cable body is provided with a fire-resistant and tensile component, the fire-resistant and tensile component is provided with a protective component, the fire-resistant and tensile component includes a flame-retardant inner sheath, the flame-retardant inner sheath is fixed on the outer surface of the cable body, the outer surface of the flame-retardant inner sheath is fixed with a tensile shielding layer, the outer surface of the tensile shielding layer is fixed with a flame-retardant layer, and the outer surface of the flame-retardant layer is fixed with a ceramic fire-resistant silicone rubber insulation layer. The cable is provided with a fire-resistant and tensile component, and the fire resistance of the cable body is enhanced by providing a ceramic fire-resistant silicone rubber insulation layer made of PVC polyethylene and a flame-retardant layer made of aluminum hydroxide powder. In addition, the tensile resistance and mechanical strength of the cable body are enhanced by providing a tensile shielding layer made of aramid yarn and tinned copper wire, which can extend the service life of the cable body and make the cable body more practical.

[0004] The photovoltaic cable has a tensile shielding layer made of aramid yarn and tinned copper wire to enhance the tensile resistance of the cable body. However, during use, most photovoltaic cables are equipped with multiple groups of cable cores. During use, the multiple groups of cable cores may interfere with each other, which will affect the transmission efficiency and generate heat, affecting the use.

[0005] Therefore, in order to solve the above problems, a photovoltaic cable with an anti-drag function for use at sea is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide an anti-drag photovoltaic cable for use at sea, so as to solve the problem that the photovoltaic cable in the prior art mentioned in the above background technology enhances the tensile resistance of the cable body by providing a tensile shielding layer made of aramid yarn and tinned copper wire, but during the use of the photovoltaic cable, most of them are equipped with multiple groups of cable cores, and during the use, the multiple groups of cable cores will interfere with each other, which will affect the transmission efficiency and generate heat, affecting the use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-drag photovoltaic cable for use at sea, comprising: a cable core;

[0008] A reinforcement structure is arranged on the outer side of the cable core, and the reinforcement structure comprises a bracket, the bracket is sleeved on the outer side of the cable core, the inner side of the bracket is filled with a flame retardant filler, and a steel wire is passed through the middle part of the inner side of the bracket;

[0009] A protective structure is arranged on the outside of the reinforcement structure, and the protective structure includes an inner corrosion-resistant layer, the inner corrosion-resistant layer is coated on the outer wall of the bracket, the outer wall of the inner corrosion-resistant layer is coated with an inner wear-resistant layer, the outer wall of the inner wear-resistant layer is coated with an outer corrosion-resistant layer, and the outer wall of the outer corrosion-resistant layer is coated with an outer wear-resistant layer.

[0010] Preferably, the cable cores are provided in three groups, the inner side of the bracket is in a "Y" shape, and the three groups of cable cores are respectively and evenly installed on the inner side of the bracket.

[0011] Preferably, a shielding layer is bonded to the inner wall of the bracket.

[0012] Preferably, the flame retardant filler is made of aluminum hydroxide flame retardant.

[0013] Preferably, the steel wire is woven from a plurality of steel wires.

[0014] Preferably, the inner corrosion-resistant layer and the outer corrosion-resistant layer are made of polyether polyurethane material, and the inner wear-resistant layer and the outer wear-resistant layer are made of polyether polyurethane material.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can isolate the three groups of cable cores from each other by providing a bracket, and arrange them at 120° to each other, so that the magnetic fields can offset each other and reduce the generation of the proximity effect. At the same time, the three groups of cable cores are arranged around the steel wire, which can enhance the tensile performance of the cable and extend its service life.

[0016] 1. The utility model is provided with a reinforcement structure, and the bracket can support the cable core on the outside to prevent the cable core from being damaged by pressure. With the flame-retardant filler, the three groups of cable cores can be isolated from each other and arranged at 120° to each other, so that the magnetic fields can offset each other and reduce the generation of the proximity effect. At the same time, the three groups of cable cores are arranged around the steel wire, which can enhance the tensile performance of the cable core and extend its service life;

[0017] 2. The utility model is provided with a protective structure. The setting of the inner corrosion-resistant layer and the outer corrosion-resistant layer can improve the corrosion resistance of the cable to avoid the cable being damaged by seawater erosion during use. The setting of the inner wear-resistant layer and the outer wear-resistant layer can improve the wear resistance of the cable to avoid the cable being damaged by friction during laying. The inner corrosion-resistant layer, the inner wear-resistant layer, the outer corrosion-resistant layer and the outer wear-resistant layer are sequentially coated from the inside to the outside, which can avoid that when the outer corrosion-resistant layer and the outer wear-resistant layer are damaged, if there is no timely remedy, the cable will be damaged by the direct influence of external force, thereby ensuring the stable operation of the equipment to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the explosion of the structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structural explosion of the reinforced structure of the utility model.

[0021] In the figure: 1. cable core; 2. reinforcement structure; 21. bracket; 22. flame retardant filler; 23. steel wire; 3. protection structure; 31. inner corrosion resistant layer; 32. inner wear resistant layer; 33. outer corrosion resistant layer; 34. outer wear resistant layer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 , an embodiment provided by the utility model:

[0024] The cable core 1 used in the present application is a product that can be directly purchased on the market. Its principle and connection method are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0025] A photovoltaic cable for offshore use with an anti-drag function, comprising: a cable core 1;

[0026] A reinforcement structure 2 is arranged on the outside of the cable core 1. The reinforcement structure 2 includes a bracket 21. The bracket 21 is sleeved on the outside of the cable core 1. The inside of the bracket 21 is filled with a flame retardant filler 22. A steel wire 23 is passed through the middle of the inner side of the bracket 21. The bracket 21 can isolate the three groups of cable cores 1 from each other and set them at 120° to each other, so that the magnetic fields can offset each other and reduce the generation of the proximity effect. At the same time, the three groups of cable cores 1 are arranged around the steel wire 23, which can enhance the tensile performance of the cable and extend the service life.

[0027] A protective structure 3 is arranged on the outside of the reinforcement structure 2, and the protective structure 3 includes an inner corrosion-resistant layer 31, and the inner corrosion-resistant layer 31 is coated on the outer wall of the bracket 21, and the outer wall of the inner corrosion-resistant layer 31 is coated with an inner wear-resistant layer 32, and the outer wall of the inner wear-resistant layer 32 is coated with an outer corrosion-resistant layer 33, and the outer wall of the outer corrosion-resistant layer 33 is coated with an outer wear-resistant layer 34. The arrangement of the inner corrosion-resistant layer 31 and the outer corrosion-resistant layer 33 can improve the corrosion resistance of the cable to avoid the cable being damaged by seawater erosion during use. The arrangement of the inner wear-resistant layer 32 and the outer wear-resistant layer 34 can improve the wear resistance of the cable to avoid the cable being damaged by friction during laying. The inner corrosion-resistant layer 31, the inner wear-resistant layer 32, the outer corrosion-resistant layer 33 and the outer wear-resistant layer 34 are coated in sequence from the inside to the outside, which can avoid that when the outer corrosion-resistant layer 33 and the outer wear-resistant layer 34 are damaged, if there is no timely remedy, the cable will be damaged by the direct influence of external force, thereby ensuring the stable operation of the equipment to a certain extent.

[0028] Furthermore, three groups of cable cores 1 are arranged, and the inner side of the bracket 21 is in a "Y" shape. The three groups of cable cores 1 are evenly installed on the inner side of the bracket 21. The bracket 21 can support and protect the cable cores 1 on the outside to improve the compression resistance of the cable cores 1.

[0029] Furthermore, a shielding layer is bonded to the inner wall of the bracket 21 . The provision of the shielding layer can reduce the mutual interference between the three groups of cable cores 1 , thereby ensuring the normal use of the cable cores 1 .

[0030] Furthermore, the flame retardant filler 22 is made of aluminum hydroxide flame retardant. The flame retardant filler 22 can slow down the spread of fire when the cable catches fire.

[0031] Furthermore, the steel wire 23 is woven from a plurality of steel wires, and the steel wire 23 can enhance the tensile strength of the cable core 1, thereby extending the service life of the cable.

[0032] Furthermore, the inner corrosion-resistant layer 31 and the outer corrosion-resistant layer 33 are made of polyether polyurethane material, and the inner wear-resistant layer 32 and the outer wear-resistant layer 34 are made of polyether polyurethane material. The setting of the inner corrosion-resistant layer 31 and the outer corrosion-resistant layer 33 can improve the corrosion resistance of the cable to avoid the cable being damaged by seawater erosion during use. The setting of the inner wear-resistant layer 32 and the outer wear-resistant layer 34 can improve the wear resistance of the cable to avoid the cable being damaged by friction during laying.

[0033] Working principle: When in use, the setting of the inner corrosion-resistant layer 31 and the outer corrosion-resistant layer 33 can improve the corrosion resistance of the cable to prevent the cable from being damaged by seawater erosion during use. The setting of the inner wear-resistant layer 32 and the outer wear-resistant layer 34 can improve the wear resistance of the cable to prevent the cable from being damaged by friction during laying. The inner corrosion-resistant layer 31, the inner wear-resistant layer 32, the outer corrosion-resistant layer 33 and the outer wear-resistant layer 34 are coated from the inside to the outside in sequence, which can prevent the outer corrosion-resistant layer 33 and the outer wear-resistant layer 34 from being damaged. If there is no timely remedy, the cable will be directly damaged by external forces, which ensures the stable operation of the equipment to a certain extent.

[0034] The bracket 21 can support the cable core 1 on the outside to prevent the cable core 1 from being damaged by pressure. In combination with the flame-retardant filler 22, the three groups of cable cores 1 can be isolated from each other and arranged at 120° to each other, so that the magnetic fields can offset each other and reduce the generation of the proximity effect. At the same time, the three groups of cable cores 1 are arranged around the steel wire 23, which can enhance the tensile strength of the cable and extend its service life.

[0035] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A photovoltaic cable for anti-drag at sea, comprising: Cable core (1); Features: A reinforcement structure (2) is arranged on the outer side of the cable core (1), the reinforcement structure (2) comprises a bracket (21), the bracket (21) is sleeved on the outer side of the cable core (1), the inner side of the bracket (21) is filled with a flame retardant filler (22), and a steel wire (23) is passed through the middle part of the inner side of the bracket (21); A protective structure (3) is arranged on the outside of the reinforcement structure (2), and the protective structure (3) includes an inner corrosion-resistant layer (31), the inner corrosion-resistant layer (31) is coated on the outer wall of the bracket (21), the outer wall of the inner corrosion-resistant layer (31) is coated with an inner wear-resistant layer (32), the outer wall of the inner wear-resistant layer (32) is coated with an outer corrosion-resistant layer (33), and the outer wall of the outer corrosion-resistant layer (33) is coated with an outer wear-resistant layer (34).

2. The anti-drag photovoltaic cable for use at sea according to claim 1, characterized in that: The cable cores (1) are provided in three groups, the inner side of the bracket (21) is in a "Y"-shaped structure, and the three groups of cable cores (1) are evenly installed on the inner side of the bracket (21).

3. The anti-drag photovoltaic cable for use at sea according to claim 1, characterized in that: A shielding layer is bonded to the inner wall of the bracket (21).

4. The anti-drag photovoltaic cable for use at sea according to claim 1, characterized in that: The flame retardant filler (22) is made of aluminum hydroxide flame retardant.

5. The anti-drag photovoltaic cable for use at sea according to claim 1, characterized in that: The steel wire (23) is braided from a plurality of steel wires.

6. The anti-drag photovoltaic cable for use at sea according to claim 1, characterized in that: The inner corrosion-resistant layer (31) and the outer corrosion-resistant layer (33) are made of polyether polyurethane material, and the inner wear-resistant layer (32) and the outer wear-resistant layer (34) are made of polyether polyurethane material.

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