A separable double-core photovoltaic power generation system cable

Abstract

This utility model relates to cables for photovoltaic power generation systems, and discloses a detachable dual-core photovoltaic power generation system cable, including a first conductor and a second conductor. Insulation layers are provided around the first and second conductors. A first outer sheath and a second outer sheath are respectively provided around the insulation layers of the first and second conductors. The first and second outer sheaths are connected by a connecting rib, and at least one through hole is provided in the middle of the connecting rib. The presence of at least one through hole in the middle of the connecting rib of the outer sheath reduces the difficulty of separation while preventing easy separation by external force, thus not affecting installation and facilitating maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, and in particular relates to a detachable dual-core photovoltaic power generation system cable. Background Technology

[0002] Existing photovoltaic cables have guaranteed performance, but photovoltaic systems typically use direct current conduction, requiring two cores for positive and negative terminals. However, current photovoltaic system cables are all single-core structures, which require repeated laying and are prone to tangling.

[0003] Application number 2011201133498 discloses a dual-core figure-eight detachable photovoltaic cable, in which a layer of irradiated cross-linked polyolefin sheath is extruded over two sets of cables, and the two sets of cable sheaths are connected in a diamond pattern. However, this sheath is not easy to separate. There are also designs with notches at the connection points, but these are easily separated by external forces, affecting installation. Utility Model Content

[0004] The purpose of this utility model is to provide a separable dual-core photovoltaic power generation system cable, which is provided with a conductor shielding layer and an insulation shielding layer. The connecting rib of the outer sheath has at least one through hole in the middle, which reduces the difficulty of separation and prevents it from being easily separated by external force, does not affect the laying, and is convenient for maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A separable dual-core photovoltaic power generation system cable includes a first conductor and a second conductor. The first conductor and the second conductor are provided with an insulation layer. The insulation layer of the first conductor and the second conductor are respectively provided with a first outer sheath and a second outer sheath. The first outer sheath and the second outer sheath are connected by a connecting rib. The connecting rib has at least one through hole in the middle.

[0007] Preferably, the length of the through hole is greater than one-quarter of the width of the connecting rib and less than three-quarters of the width of the connecting rib.

[0008] Preferably, the first outer sheath or the second outer sheath has an opening, and a third outer sheath is provided around the outer sheath with the opening.

[0009] Preferably, the cross-sectional area of ​​the first conductor and the second conductor is 1.5 to 35 mm². 2 It is made of several soft, round copper wires of the same diameter twisted together in a regular concentric pattern.

[0010] Preferably, the first outer sheath, the second outer sheath, and the connecting rib are integrally formed.

[0011] Preferably, the first outer sheath, the second outer sheath, and the connecting rib are made of high-temperature irradiation-resistant cross-linked polyolefin sheath material.

[0012] The beneficial effects of this utility model are:

[0013] 1. The cable's outer sheath has at least one through hole in the middle of the connecting rib, reducing the difficulty of separation while preventing easy separation by external force, thus not affecting installation and facilitating maintenance. This cable not only possesses excellent electrical properties but also features flexibility, UV resistance, moisture resistance, and environmental resistance. 2. The first or second outer sheath has an opening, and another outer sheath is installed around the outer sheath with the opening, further increasing the convenience of maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a detachable dual-core photovoltaic power generation system cable according to one embodiment;

[0015] Figure 2 This is a schematic diagram of the structure of a detachable dual-core photovoltaic power generation system cable according to another embodiment;

[0016] Figure 3 This is a schematic diagram of the structure of a separable dual-core photovoltaic power generation system cable according to another embodiment. In the figure: 10, first conductor; 20, second conductor; 11, insulation layer; 21, insulation layer; 12, first outer sheath; 22, second outer sheath; 30, connecting rib; 31, through hole; 40, opening; 41, third outer sheath. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1 A separable dual-core photovoltaic power generation system cable includes a first conductor 10 and a second conductor 20. The first conductor 10 and the second conductor 20 are provided with insulation layers (11, 21) around their peripheries. The first outer sheath 12 and the second outer sheath 22 are respectively provided around the insulation layers (11, 21) of the first conductor 10 and the second conductor 20. The first outer sheath 12 and the second outer sheath 22 are connected by a connecting rib 30. The connecting rib 30 has at least one through hole 31 in the middle.

[0019] Specifically, such as Figure 1 As shown, a through hole 31 is provided. The length of the through hole 31 is greater than one-quarter of the width of the connecting rib 30 and less than three-quarters of the width of the connecting rib 30.

[0020] In another embodiment, such as Figure 2 As shown, multiple through holes 31 are provided. The length of each through hole 31 is greater than one-quarter of the width of the connecting rib 30 and less than three-quarters of the width of the connecting rib 30. This reduces the difficulty of separation to a certain extent while preventing easy separation by external forces, thus not affecting the laying and facilitating maintenance.

[0021] In another embodiment, such as Figure 3 As shown, the first outer sheath 12 or the second outer sheath 22 is provided with an opening 40, and a third outer sheath 41 is provided around the outer sheath with the opening. Alternatively, the first outer sheath, the second outer sheath, and the connecting rib can be integrally formed into an outer sheath, with the openings staggered, which further increases the convenience of maintenance without affecting the electrical performance of the cable.

[0022] Specifically, the conductor cross-sectional area is (1.5~35) mm². 2 The conductor structure is geometrically circular, consisting of several soft, round copper wires of the same diameter twisted concentrically in a regular pattern.

[0023] The insulation layers (11, 21) are made of high-temperature irradiation cross-linked polyolefin insulation material and are produced by high-temperature extrusion using an extruder, with the nominal thickness of the insulation layer controlled between (0.7 and 0.9) mm.

[0024] The outer sheath is made of high-temperature irradiation cross-linked polyolefin sheath material, produced by high-temperature extrusion using an extruder, with the nominal thickness of the sheath layer controlled between (0.8~1.1) mm; it is produced by extrusion using a figure-eight double-core mold; during production, the two insulated cores are placed parallel to each other and pass through the mold together, and the material melts due to the high temperature, covering the outside of the cores to form a figure-eight structure; the production specification is 2*4 square millimeters.

[0025] The connecting rib 40 is made of high-temperature irradiation cross-linked polyolefin sheath material. It is produced together with the outer sheath by high-temperature extrusion through an extruder. That is, the first outer sheath, the second outer sheath and the connecting rib are integrally formed, and the thickness and width are controlled within 2.0±0.5mm.

[0026] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A detachable dual-core photovoltaic power generation system cable, characterized in that: It includes a first conductor and a second conductor, with an insulating layer disposed around the first conductor and the second conductor. A first outer sheath and a second outer sheath are respectively disposed around the insulating layer of the first conductor and the second conductor. The first outer sheath and the second outer sheath are connected by a connecting rib, and at least one through hole is disposed in the middle of the connecting rib.

2. The detachable dual-core photovoltaic power generation system cable according to claim 1, characterized in that: The length of the through hole is greater than one-quarter of the width of the connecting rib and less than three-quarters of the width of the connecting rib.

3. The detachable dual-core photovoltaic power generation system cable according to claim 1, characterized in that: The first outer sheath or the second outer sheath has an opening, and a third outer sheath is provided around the outer sheath with the opening.

4. The detachable dual-core photovoltaic power generation system cable according to claim 1, characterized in that: The cross-sectional area of ​​the first conductor and the second conductor is 1.5–35 mm². 2 It is made of several soft, round copper wires of the same diameter twisted together in a regular concentric pattern.

5. The detachable dual-core photovoltaic power generation system cable according to claim 1, characterized in that: The first outer sheath, the second outer sheath, and the connecting rib are integrally formed.

6. The detachable dual-core photovoltaic power generation system cable according to claim 1, characterized in that: The first outer sheath, the second outer sheath, and the connecting rib are made of high-temperature irradiation cross-linked polyolefin sheath material.

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