Offshore photovoltaic waterproof junction box

Abstract

The waterproof junction box comprises a box body and a top cover, the side wall of the box body is provided with a wiring hole, the inner cavity of the wiring hole is fixedly connected with a sealing ring, the inner cavity of the sealing ring is fixedly connected with a waterproof ring, the outer side of the wiring hole is provided with a water retaining assembly, and the two sides of the wiring hole in the box body are symmetrically provided with sliding grooves. The water retaining assembly is slidably connected into the sliding groove. According to the utility model, for the wiring hole which is not used temporarily, the water blocking part is pulled down to seal, so that water is prevented from entering the inner cavity of the box body from the wiring hole which is not used temporarily; the waterproof ring is made of a water-absorbent resin material, the water-absorbent resin can absorb water to expand, gaps between the wiring holes are sealed, the waterproof performance is enhanced, the waterproof ring can be replaced when the cable is used next time, convenience is achieved, and cost is saved. The top cover is arranged to be of a trapezoidal table structure and plays a role in guiding water falling onto the top cover, and the top cover is connected with the box body through the inserting grooves, the inserting blocks and the sealing strips, so that multiple waterproof guarantees can be set, and the box is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic components, in particular to a waterproof junction box for offshore photovoltaics. Background Art

[0002] The photovoltaic junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the power generated by solar cells to external lines, and conduct the current generated by photovoltaic modules. After a long period of technical preparation, offshore photovoltaics are about to enter the stage of large-scale application. Since the application scenario is at sea, strong winds and waves are very common, and there are extremely high requirements for junction boxes to reduce the erosion effects of long-term sunshine and atomized seawater. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide a waterproof junction box for offshore photovoltaics to achieve dry connection with cables.

[0004] Technical solution: The waterproof junction box for offshore photovoltaics described in the utility model includes a box body and a top cover. The side wall of the box body is provided with a plurality of wiring holes. The inner cavity of the wiring hole is fixedly connected to a sealing ring. The inner cavity of the sealing ring is fixedly connected to a waterproof ring. A water retaining assembly is provided on the outer side of the wiring hole.

[0005] Furthermore, the water retaining assembly includes a baffle and a connecting portion, wherein two connecting portions are symmetrically arranged on the baffle, and a limiting portion extends outwardly from the end of each connecting portion, and the baffle, the connecting portion and the limiting portion are in a π-shaped structure.

[0006] Furthermore, slide grooves are symmetrically arranged on both sides of the wiring hole on the box body, and the connecting part and the limiting part are slidably connected in the slide grooves.

[0007] Preferably, the waterproof ring is made of a water-absorbing resin. When water passes through the waterproof ring, the water-absorbing resin absorbs water and expands, which can well seal the gaps between the wiring holes, prevent water from entering the inner cavity of the box body, and improve the waterproof performance. The waterproof ring can be replaced when it is used next time.

[0008] Furthermore, a slot is formed on the top wall of the box body, and an insert block matching the slot is provided on the bottom of the top cover.

[0009] Furthermore, a sealing strip is provided in the slot.

[0010] Furthermore, the top cover is a trapezoidal platform structure, which guides the water that falls on the top cover, allowing the water to flow around the box body and preventing the water from entering the inner cavity of the box body.

[0011] Furthermore, the inner cavity of the box body is provided with a plurality of waterproof joints.

[0012] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. The utility model sets a water-retaining component to close the unused wiring holes by pulling the baffle down along the slide slot to prevent water from entering the inner cavity of the box body from the unused wiring holes; 2. The utility model uses a waterproof ring made of a water-absorbing resin material. When water passes through the waterproof ring, the water-absorbing resin will absorb moisture and expand, thereby sealing the gaps between the wiring holes to prevent water from entering the inner cavity of the box body, thereby enhancing the waterproof performance. The waterproof ring can be replaced when it is used next time, which is very convenient and saves costs; 3. The top cover is set to a trapezoidal platform structure, which has a diversion effect on water falling on the top cover to prevent water from entering the inner cavity of the box body, and is connected to the box body through a slot, an insert, and a sealing strip, which can effectively prevent water from entering the inner cavity of the box body to corrode the internal parts and cause penetration. Multiple waterproof protections are set up for greater safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3 for Figure 2 A is an enlarged structural diagram of FIG. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0017] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "vertical", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0020] like Figure 1 and Figure 2 The utility model is shown as a waterproof junction box for offshore photovoltaic, comprising a box body 1 and a top cover 2, wherein the side wall of the box body 1 is provided with 5 wiring holes 4, the inner cavity of the wiring hole 4 is fixedly connected with a sealing ring 5, the inner cavity of the sealing ring 5 is fixedly connected with a waterproof ring 6, the waterproof ring 6 is set to be a water-absorbing resin material, when water passes through the waterproof ring 6, the water-absorbing resin will absorb water and expand, and seal the gap between the wiring holes 4 to prevent water from entering the inner cavity of the box body 1, with better waterproof performance, and the waterproof ring 6 can be replaced when used next time, which is very convenient and saves costs, and a water retaining component 8 is provided on the outer side of the wiring hole 4. The side wall of the box body 1 and the two sides of the wiring hole 4 are symmetrically provided with non-through slide grooves 7, and the water retaining component 8 is slidably connected in the slide groove 7. The top wall of the box body 1 is provided with a non-through slot 9, the bottom of the top cover 2 is fixedly connected with an insert block 10, the bottom of the inner cavity of the slot 9 is fixedly connected with a sealing strip 11, and the insert block 10 is engaged and sealed with the slot 9. The top cover 2 is connected to the box body 1 through the slot 9, the plug 10, and the sealing strip 11, which can effectively prevent water from entering the inner cavity of the box body 1 to corrode the internal parts and cause penetration, making it safer. The top cover 2 is set as a trapezoidal platform structure, which is convenient for guiding the water falling on the top cover 2, allowing the water to flow around the box body 1, so that the water cannot enter the inner cavity of the box body 1. Five waterproof joints 3 are evenly fixedly connected to the inner cavity of the box body 1.

[0021] like Figure 3 As shown, the water retaining assembly 8 comprises a baffle plate 8.1 and a connecting portion 8.2, two connecting portions 8.2 are symmetrically arranged on the baffle plate 8.1, and a limiting portion 8.3 extends outward from the end of each connecting portion 8.2, and the baffle plate 8.1, the connecting portion 8.2 and the limiting portion 8.3 are in a π-shaped structure, and the connecting portion 8.2 and the limiting portion 8.3 are slidably connected in the slide groove 7. For the wiring hole 4 that is not used temporarily, the baffle plate 8.1 is pulled down along the slide groove 7 to be closed to prevent water from entering the inner cavity of the box body 1 from the unused wiring hole 4.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A waterproof junction box for offshore photovoltaics, comprising a box body (1) and a top cover (2), characterized in that: The side wall of the box body (1) is provided with a plurality of wiring holes (4), the inner cavity of the wiring hole (4) is fixedly connected to a sealing ring (5), the inner cavity of the sealing ring (5) is fixedly connected to a waterproof ring (6), and a water retaining assembly (8) is provided on the outer side of the wiring hole (4).

2. The waterproof junction box for offshore photovoltaics according to claim 1, characterized in that: The water retaining assembly (8) comprises a retaining plate (8.1) and a connecting portion (8.2); two connecting portions (8.2) are symmetrically arranged on the retaining plate (8.1); a limiting portion (8.3) extends outwardly from the end of each connecting portion (8.2); and the retaining plate (8.1), the connecting portion (8.2) and the limiting portion (8.3) are in a π-shaped structure.

3. The waterproof junction box for offshore photovoltaics according to claim 1, characterized in that: Slide grooves (7) are symmetrically arranged on both sides of the wiring hole (4) on the box body (1), and the connecting portion (8.2) and the limiting portion (8.3) are slidably connected in the slide grooves (7).

4. The waterproof junction box for offshore photovoltaics according to claim 1, characterized in that: The waterproof ring (6) is a waterproof ring made of a water-absorbing resin material.

5. The waterproof junction box for offshore photovoltaics according to claim 1, characterized in that: The top wall of the box body (1) is provided with a slot (9), and the bottom of the top cover (2) is provided with an inserting block (10) that matches the slot (9).

6. The waterproof junction box for offshore photovoltaics according to claim 5, characterized in that: A sealing strip (11) is provided in the slot (9).

7. The waterproof junction box for offshore photovoltaics according to claim 1, characterized in that: The top cover (2) is a trapezoidal platform structure.

8. The waterproof junction box for offshore photovoltaics according to claim 1, characterized in that: The inner cavity of the box body (1) is provided with a plurality of waterproof joints (3).

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