Buried cable for photovoltaic power generation

Abstract

The utility model belongs to the field of cables, and particularly relates to a buried cable for photovoltaic power generation, which comprises a cable core, a shielding layer arranged on the outer side of the cable core, a filler layer arranged on the outer side of the shielding layer, a flame-retardant layer arranged on the outer side of the filler layer, and a reinforcing layer arranged on the outer side of the flame-retardant layer. And an outer wrapper is arranged on the outer side of the reinforcing layer. According to the utility model, the reinforcing layer is arranged inside the cable, the plurality of reinforcing convex ribs are arranged on the outer surface of the reinforcing layer, and the reinforcing convex ribs and the reinforcing layer are of an integrated structure, so that the overall strength can be enhanced, and the cable is not easy to be extruded and deformed after being buried into the ground.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to an underground cable for photovoltaic power generation. Background Art

[0002] Photovoltaic cable is a cable specially used in solar photovoltaic power generation systems. Since direct current power needs to be transmitted in solar photovoltaic power generation systems, photovoltaic cables usually use copper cores to ensure low resistance and good conductivity. For example, the utility model patent with authorization announcement number CN219418552U proposes a photovoltaic cable, including a cable core wire, the cable core wire is wrapped with an outer sheath, the outer sheath is wrapped with a plastic coating layer, a copper strip is sandwiched between the coating layer and the outer sheath, the copper strip is sleeved on the outer sheath, the two ends of the copper strip are embedded in the outer sheath, and the copper strip is provided with a plurality of through holes for the plastic coating layer to pass through, and the cross-section of the copper strip is annular. The photovoltaic cable embeds the two ends of the copper strip into the outer sheath, so that the copper strip and the cable core wire are tightly crimped together, and then coated with a rubber coating and plastic coating layer on the outside.

[0003] In photovoltaic applications, the cables need to be buried underground, which causes them to be squeezed for a long time and easily deformed, thus affecting their use. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to provide an underground cable for photovoltaic power generation, which solves the problem that during photovoltaic use, the cable needs to be buried underground, resulting in the cable being squeezed for a long time and easily deformed, thus affecting the use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an underground cable for photovoltaic power generation, comprising a cable core, a shielding layer is arranged on the outside of the cable core, a filler layer is arranged on the outside of the shielding layer, a flame retardant layer is arranged on the outside of the filler layer, a reinforcement layer is arranged on the outside of the flame retardant layer, and an outer sheath is arranged on the outside of the reinforcement layer.

[0006] Preferably, the shielding layer is made of aluminum foil and has a thickness of 0.6 mm. By setting the shielding layer, the anti-interference performance of the cable can be guaranteed.

[0007] Preferably, the filler layer is polyurethane fiber and has a thickness of 0.4 mm. The internal strength of the cable can be increased by providing the filler layer.

[0008] Preferably, the flame retardant layer is made of flame retardant fiber material and has a thickness of 0.4 mm. The flame retardant performance of the cable can be increased by providing the flame retardant layer.

[0009] Preferably, the reinforcing layer is made of Teflon and has a thickness of 0.6 mm. The reinforcement layer can increase the external strength of the cable and prevent it from being squeezed and deformed after being buried in the ground.

[0010] Preferably, the outer side of the reinforcement layer is provided with a plurality of reinforcement ribs distributed in a circular array, the reinforcement ribs and the reinforcement layer are an integrated structure, and the reinforcement ribs are embedded in the outer sheath. By providing the reinforcement ribs, the external strength of the cable can be further increased.

[0011] Preferably, the outer sheath is made of cross-linked polyethylene and has a thickness of 3 mm. The outer sheath is used as the outermost layer of the cable and has the basic functions of protection and printing identification.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model arranges a reinforcement layer inside the cable, and arranges a plurality of reinforcement ribs on the outer surface of the reinforcement layer, and the reinforcement ribs and the reinforcement layer are an integrated structure, which can increase the overall strength and prevent the cable from being squeezed and deformed after being buried in the ground.

[0014] 2. The utility model adds a filler layer, a flame retardant layer and a shielding layer inside the cable. The shielding layer can increase the basic anti-interference ability of the cable, the flame retardant layer can increase the flame retardant performance of the cable, and the filler layer can increase the internal strength of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 For the utility model Figure 1 Stereoscopic diagram of the reinforcement layer structure.

[0017] In the figure: 1. cable core; 2. shielding layer; 3. filling layer; 4. flame retardant layer; 5. reinforcement layer; 51. reinforcement ribs; 6. outer sheath. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-2A buried cable for photovoltaic power generation comprises a cable core 1, a shielding layer 2 is arranged on the outside of the cable core 1, the shielding layer 2 is made of aluminum foil and has a thickness of 0.6mm. By setting the shielding layer 2, the anti-interference performance of the cable can be guaranteed. A filler layer 3 is arranged on the outside of the shielding layer 2, and the filler layer 3 is polyurethane fiber and has a thickness of 0.4mm. By setting the filler layer 3, the internal strength of the cable can be increased. A flame retardant layer 4 is arranged on the outside of the filler layer 3, and the flame retardant layer 4 is made of flame retardant fiber and has a thickness of 0.4mm. By setting the flame retardant layer 4, the flame retardant performance of the cable can be increased. A reinforcement layer 5 is arranged on the outside of the flame retardant layer 4, and an outer sheath 6 is arranged on the outside of the reinforcement layer 5. The outer sheath 6 is made of cross-linked polyethylene and has a thickness of 3mm. The outer sheath 6 is used as the outermost layer of the cable and has the basic functions of protection and printed identification.

[0020] See also Figure 1-2 The reinforcing layer 5 is made of Teflon and has a thickness of 0.6 mm. By setting the reinforcing layer 5, the external strength of the cable can be increased, and it is not easy to be squeezed and deformed after being buried in the ground. A plurality of reinforcing ribs 51 are arranged on the outside of the reinforcing layer 5 and are distributed in a circular array. The reinforcing ribs 51 and the reinforcing layer 5 are an integrated structure, and the reinforcing ribs 51 are embedded in the outer sheath 6. By setting the reinforcing ribs 51, the external strength of the cable can be further increased.

[0021] The specific implementation process of the utility model is as follows: when in use, firstly, a shielding layer 2, a filler layer 3, a flame retardant layer 4 and a reinforcement layer 5 are sequentially arranged on the outside of the cable core 1, and then an outer sheath 6 is wrapped on the outside of the reinforcement layer 5 by an extruder, so that the outer sheath 6 is combined with the reinforcement ribs 51 of the reinforcement layer 5, so that the shielding layer 2 can increase the basic anti-interference ability of the cable, and the flame retardant layer 4 increases the flame retardant performance of the cable, and at the same time, the filler 3 layers increase the internal strength of the cable, and the reinforcement layer 5 and the reinforcement ribs 51 can increase the structural strength of the cable from the outside, and after it is buried in the ground, it is not easy to be squeezed and deformed.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underground cable for photovoltaic power generation, comprising a cable core (1), characterized in that: A shielding layer (2) is arranged on the outside of the cable core (1), a filler layer (3) is arranged on the outside of the shielding layer (2), a flame retardant layer (4) is arranged on the outside of the filler layer (3), a reinforcement layer (5) is arranged on the outside of the flame retardant layer (4), and an outer sheath (6) is arranged on the outside of the reinforcement layer (5).

2. The underground cable for photovoltaic power generation according to claim 1, characterized in that: The shielding layer (2) is made of aluminum foil and has a thickness of 0.6 mm.

3. The underground cable for photovoltaic power generation according to claim 1, characterized in that: The filling layer (3) is polyurethane fiber and has a thickness of 0.4 mm.

4. The underground cable for photovoltaic power generation according to claim 1, characterized in that: The flame retardant layer (4) is made of flame retardant fiber material and has a thickness of 0.4 mm.

5. The underground cable for photovoltaic power generation according to claim 1, characterized in that: The reinforcement layer (5) is made of Teflon material and has a thickness of 0.6 mm.

6. The underground cable for photovoltaic power generation according to claim 1, characterized in that: The outer side of the reinforcement layer (5) is provided with a plurality of reinforcement ribs (51) distributed in a ring array, the reinforcement ribs (51) and the reinforcement layer (5) are an integral structure, and the reinforcement ribs (51) are embedded in the outer sheath (6).

7. The underground cable for photovoltaic power generation according to claim 1, characterized in that: The outer sheath (6) is made of cross-linked polyethylene and has a thickness of 3 mm.

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