Water-blocking photovoltaic cable device

Abstract

The utility model relates to a photovoltaic cable, in particular to a water-blocking photovoltaic cable device, which comprises a unit mechanism, the unit mechanism comprises a conductor and an inner protective layer, and the inner protective layer is coated outside the conductor; wherein the waterproof photovoltaic cable device further comprises a filling core and an outer protection layer, the filling core extends along a first direction, the plurality of unit mechanisms are stranded on the filling core along the first direction, and the outer protection layer wraps all the stranded unit mechanisms; and the filling core is made of a water-blocking material. According to the structure of the utility model, a plurality of unit mechanisms are arranged, the plurality of unit mechanisms are twisted with the filling core made of the water-blocking material, and the outer protective layer is used for uniformly coating the filling core, so that the water-blocking performance is better.

Description

Technical Field

[0001] This utility model relates to a photovoltaic cable, and more particularly to a water-blocking photovoltaic cable device. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] Photovoltaic cables are used for electrical transmission and are frequently used in environments such as deserts and hillsides. In some special applications, they are also used in water-adjacent environments such as seasides and riverbanks.

[0004] Existing photovoltaic cables generally do not have sufficient water-blocking performance to cover the above-mentioned scenarios. Relying on the plastic material of the photovoltaic cable itself to block water is obviously difficult to achieve good results, and simply wrapping a water-blocking layer is still not very effective. Therefore, waterproofing is often achieved by additionally inserting plastic pipes, but the installation and laying costs are higher and the operation is also very cumbersome.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a water-blocking photovoltaic cable device, which can achieve better water-blocking performance by setting multiple unit mechanisms, twisting multiple unit mechanisms together with water-blocking material as the core, and uniformly covering them with an outer protective layer.

[0007] To achieve the above objectives, this utility model discloses a water-blocking photovoltaic cable device, which includes:

[0008] A unit structure, the unit structure comprising a conductor and an inner protective layer, the inner protective layer covering the conductor;

[0009] The water-blocking photovoltaic cable device further includes a core and an outer protective layer. The core extends along a first direction, and there are multiple unit mechanisms. The multiple unit mechanisms are twisted together on the core along the first direction, and the outer protective layer covers all the twisted unit mechanisms.

[0010] The filler is made of water-blocking material.

[0011] As a further description of the above technical solution, the conductor of the unit mechanism is made of stranded pure copper.

[0012] As a further description of the above technical solution, the filler core has a sufficient diameter so that each of the unit mechanisms is respectively attached to the outer wall of the filler core and the inner wall of the outer protective layer.

[0013] As a further description of the above technical solution, the number of unit mechanisms is sufficient such that both sides of each unit mechanism are mutually fitted and limited with the other two corresponding unit mechanisms.

[0014] As a further description of the above technical solution, the inner protective layer of the unit structure includes an insulating layer and an inner sheath layer. The insulating layer covers the conductor and is used to insulate the conductor from the outside. The inner sheath layer covers the insulating layer and is used to provide physical protection for the conductor covered by the insulating layer.

[0015] As a further description of the above technical solution, the outer protective layer includes a water-blocking layer and an outer sheath layer. The water-blocking layer covers all of the twisted unit structures and is used to prevent external water from entering. The outer sheath layer covers the water-blocking layer and is used to provide physical protection for all of the unit structures covered by the water-blocking layer.

[0016] As a further description of the above technical solution, the unit structure is matched with the diameter of the filling core.

[0017] As a further description of the above technical solution, the number of unit mechanisms is six.

[0018] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0019] This utility model's water-blocking photovoltaic cable device can be configured by setting multiple unit structures, with water-blocking material filling the core of these unit structures, and uniformly covering them with an outer protective layer. This outer protective layer provides the first layer of external waterproof protection, while the internal filling core forms a second layer of barrier protection between the multiple different unit structures. This prevents water from seeping into the outer protective layer and overflowing between the different unit structures under special circumstances. As a result, this utility model's water-blocking photovoltaic cable device has excellent waterproof performance and can be used in more water-related and water-adjacent scenarios.

[0020] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional schematic diagram of a water-blocking photovoltaic cable device provided in the embodiments of this specification;

[0023] Figure 2 This is a schematic cross-sectional view of a unit structure of a water-blocking photovoltaic cable device provided in the embodiments of this specification;

[0024] In the diagram: 1. Unit structure; 11. Conductor; 12. Inner protective layer; 121. Insulation layer; 122. Inner sheath layer; 2. Core filler; 3. Outer protective layer; 31. Water-blocking layer; 32. Outer sheath layer. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0027] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0028] Please see Figure 1-2 This embodiment provides a water-blocking photovoltaic cable device, which includes:

[0029] Unit 1 includes a conductor 11 and an inner protective layer 12, with the inner protective layer 12 covering the conductor 11.

[0030] The water-blocking photovoltaic cable device also includes a core 2 and an outer protective layer 3. The core extends along the first direction of 2. There are multiple unit mechanisms 1. Multiple unit mechanisms are twisted together on the core 2 along the first direction of 1. The outer protective layer 3 covers all the twisted unit mechanisms 1.

[0031] The core filler 2 is made of water-blocking material.

[0032] For the above structure, during installation, the corresponding conductor 11 is first protected by the inner protective layer 12, then a filler core 2 of suitable size is selected as the intermediate shaft, and a suitable number of unit mechanisms 1 are selected and twisted and coiled on the filler core 2 along the first direction. Finally, the entire structure is covered by the outer protective layer 3 to achieve the protection effect.

[0033] With the above structure, during use, if there is water outside, most of the water will be isolated by the outermost protective layer 3 of the water-blocking photovoltaic cable device, thus achieving a water-blocking protection effect. In some extreme cases, when the outer protective layer 3 is physically damaged and a large amount of leakage occurs, water may come into contact with one of the unit mechanisms 1 at the crack. Since there is an inner protective layer 12 outside the unit mechanism 1, the water can be isolated from the conductor 11 inside the unit mechanism 1. Of course, when water penetrates one of the unit mechanisms 1, due to the setting of the core 2 at the center and the twisted arrangement of the unit mechanisms 1, the water can be prevented from flowing further between different unit mechanisms 1 inside the water-blocking photovoltaic cable device, thus achieving the best waterproof effect.

[0034] Furthermore, the conductor 11 of the unit mechanism 1 is made of stranded pure copper, which has better corrosion resistance and higher mechanical strength than the existing aluminum conductor, thereby indirectly enhancing the water-blocking performance.

[0035] Furthermore, the filler core 2 has a sufficient diameter to ensure that each unit mechanism 1 is respectively fitted to the outer wall of the filler core 2 and the inner wall of the outer protective layer 3. See details in [link to documentation]. Figure 2Since the filler core 2 itself is a water-blocking material, and the inner protective layer 12 of the outer sheath of the unit structure 1 can also play a certain water-blocking role, water is prevented from overflowing between different unit structures 1. At the same time, there are enough unit structures 1 so that each unit structure 1 has two corresponding unit structures 1 on each side for mutual restraint. That is to say, in this embodiment, each unit structure 1 has two corresponding adjacent unit structures 1 on each side for restraint, the inner side of each unit structure 1 is restrained by the filler core 2, and the outer side of each unit structure 1 is restrained by the outer protective layer 3. Therefore, the interior of the water-blocking photovoltaic cable device is actually isolated into individual sub-units, minimizing the expansion of water leakage.

[0036] Furthermore, the inner protective layer 12 of unit structure 1 includes an insulating layer 121 and an inner sheath layer 122. The insulating layer 121 covers the conductor 11 and is used to insulate the conductor 11 from the outside. The inner sheath layer 12 covers the insulating layer 121 and is used to provide physical protection for the conductor 11 covered by the insulating layer 121. With the above structure, the conductor 11 can achieve a better water-blocking effect under the dual protection of the insulating layer 121 and the inner sheath layer 122, avoiding the situation of easy leakage as seen in the comparative example with only the insulating layer 121.

[0037] Furthermore, the outer protective layer 3 includes a water-blocking layer 31 and an outer sheath layer 32. The water-blocking layer 31 covers all the twisted unit structures 1 and is used to prevent external water from entering. The outer sheath layer 32 covers the water-blocking layer 31 and is used to provide physical protection for all the unit structures 1 covered by the water-blocking layer 31. Through the above structure, the unit structure 1 can achieve a good water-blocking effect under the dual protection of the water-blocking layer 31 and the outer sheath layer 32, and achieve multiple water-blocking protection in conjunction with the inner protective layer 12.

[0038] Furthermore, the diameter of unit structure 1 matches that of filler core 2, and the number of unit structures is six. That is to say, the cross-sections of each pipeline in this embodiment are arranged in a honeycomb symmetrical pattern, maximizing the regularity of the material, and having a large density and high water resistance.

[0039] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0040] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0041] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A water-blocking photovoltaic cable apparatus, characterized by, The water-blocking photovoltaic cable device comprises: a unit mechanism comprising a conductor and an inner protective layer, the inner protective layer being wrapped outside the conductor; wherein the water-blocking photovoltaic cable device further comprises a filling core and an outer protective layer, the filling core extending along a first direction, the number of the unit mechanisms being multiple, the multiple unit mechanisms being twisted on the filling core along the first direction, and the outer protective layer being wrapped outside all the unit mechanisms after being twisted; the filling core is made of a water-blocking material; the conductor of the unit mechanism is arranged as twisted pure copper; the filling core has a sufficient diameter so that each unit mechanism respectively fits with the outer wall of the filling core and the inner wall of the outer protective layer; the unit mechanism has a sufficient number so that both sides of each unit mechanism fit with the other two corresponding unit mechanisms; the inner protective layer of the unit mechanism comprises an insulation layer and an inner sheath layer, the insulation layer being wrapped outside the conductor, the insulation layer being used to insulate the conductor from the outside, and the inner sheath layer being wrapped outside the insulation layer, the inner sheath layer being used to provide physical protection for the conductor wrapped with the insulation layer; the outer protective layer comprises a water-blocking layer and an outer sheath layer, the water-blocking layer being wrapped outside all the unit mechanisms after being twisted, the water-blocking layer being used to block external water from entering, and the outer sheath layer being wrapped outside the water-blocking layer, the outer sheath layer being used to provide physical protection for all the unit mechanisms wrapped with the water-blocking layer.

2. A water-blocking photovoltaic cable apparatus according to claim 1, characterized in that: The unit mechanism matches the diameter size of the filling core.

3. A water-blocking photovoltaic cable apparatus according to claim 1, characterized by: The number of the unit mechanisms is six.

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