Waterproof cable connection box for offshore photovoltaic field

Abstract

The utility model relates to waterproof cable connection box for offshore photovoltaic field area belongs to waterproof cable connection box technical field, this waterproof cable connection box for offshore photovoltaic field area includes: installation box and box cover, the inner wall both sides of installation box are all fixedly connected with sealing ring, sealing mechanism, the sealing mechanism includes the limiting support of two of sliding connection in the inner wall of box cover, the top of installation box is fixedly connected with a plurality of insertion rod, the surface of insertion rod is connected in the inner wall of box cover, the end of limiting support is fixedly connected with two of spring, through spring elasticity force and push limiting support and connect to insertion rod in, through the slide of fender in the box cover and through screw and lock, realized to limiting support and carried out stable locking, avoided cable connection box and connected unsteadily, and then guaranteed that box cover and installation box were connected closely, thereby guaranteed the close sealing of cable connection box junction.

Description

Technical Field

[0001] This utility model relates to the technical field of waterproof cable junction boxes, and in particular to waterproof cable junction boxes used in offshore photovoltaic fields. Background Technology

[0002] Offshore photovoltaic (PV) fields refer to floating solar power generation systems built in marine environments. These systems convert solar energy into electrical energy through photovoltaic modules and are clean energy facilities that adapt to complex aquatic environments. The environment of offshore PV fields is characterized by high humidity, high salt spray, strong ultraviolet radiation, and wave impact. Therefore, waterproof cable junction boxes are required to protect the cable connections between PV panels.

[0003] According to the search, the Chinese patent "A cable connection box with high sealing performance" authorized announcement number "CN221947859U" uses a spring to push the limiting block against the inner wall of the side plate, and then uses sealing gasket one and sealing gasket two to assist in sealing the inside of the box, while also assisting in the storage and retrieval of the adjustment rod, thereby achieving the sealing of the cable connection box.

[0004] In the aforementioned application, because the spring is elastic, the offshore photovoltaic field is easily impacted by waves, which can cause the limiting block to float up and down, thereby affecting the sealing of the cable connection box. Utility Model Content

[0005] Therefore, it is necessary to provide waterproof cable junction boxes for offshore photovoltaic fields to address the problem of unstable cable junction box connections that affect the sealing performance of the cable junction boxes.

[0006] The system includes: a mounting box and a cover; sealing rings are fixedly connected to both sides of the inner wall of the mounting box; a sealing mechanism, comprising two limiting brackets slidably connected to the inner wall of the cover; several insert rods fixedly connected to the top of the mounting box, the surfaces of the insert rods engaging with the inner wall of the cover; two springs fixedly connected to the ends of the limiting brackets, the other ends of the springs fixedly connected to the inner wall of the cover; and a stop bracket slidably connected to the inner wall of the cover, the inner wall of the stop bracket being threaded with screws, the surfaces of the screws being threaded with the inner wall of the cover. The springs push the limiting brackets into the insert rods, and the stop brackets slide down into the cover and are locked in place by the screws, thus achieving stable locking of the limiting brackets and ensuring a tight connection between the cover and the mounting box, thereby ensuring a tight seal at the cable connection point.

[0007] In one embodiment, an arc-shaped block is slidably connected to the upper end of the inner wall of the mounting box, and the surface of the arc-shaped block contacts the surface of the sealing ring.

[0008] In one embodiment, a spring is fixedly connected to the top of the arc-shaped block, and the top end of the spring is fixedly connected to the inner top wall of the mounting box.

[0009] In one embodiment, two pressure blocks are fixedly connected to the bottom of the cover, and the surfaces of the pressure blocks are slidably connected to the inner wall of the mounting box. A spring-loaded tab pushes the arc-shaped block down onto the surface of the sealing ring. The cover is then fixed to the mounting box, ensuring the pressure blocks stably abut against the surface of the arc-shaped block, thereby providing stable pressure on the sealing ring and ensuring it adheres tightly to the cable surface, thus improving the sealing effect of the cable connection box.

[0010] In one embodiment, the end of the baffle is hinged to a shield.

[0011] In one embodiment, a rubber ring is fixedly connected to the end of the baffle.

[0012] In one embodiment, a limiting block is slidably connected to the upper end of the inner wall of the baffle, and the bottom of the limiting block contacts the top of the shield. The limiting block stabilizes the shield by blocking the top of the screw, and the rubber ring seals the connection between the shield and the baffle, preventing moisture from entering the interior of the shield and thus avoiding rusting of the screw.

[0013] In one embodiment, a sliding rod is fixedly connected to the bottom of the baffle, and the surface of the sliding rod is slidably connected to the inner wall of the lid. The sliding rod limits the upward movement range of the baffle, thus preventing the risk of the baffle being lost.

[0014] Beneficial effects

[0015] 1. The limit bracket is pushed into the insertion rod by the elastic force of the spring, and then slides into the box cover by the stop and is locked by screws. This achieves stable locking of the limit bracket, avoids unstable connection of the cable connection box, and ensures tight connection between the box cover and the installation box, thereby ensuring a tight seal at the connection of the cable connection box.

[0016] 2. The spring clip pushes the arc-shaped block down onto the surface of the sealing ring, and the box cover is fixed to the mounting box, so that the pressure block is stably pressed against the surface of the arc-shaped block, thereby providing stable pressure on the sealing ring and ensuring that the sealing ring is tightly attached to the cable surface, thus improving the sealing effect of the cable connection box. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a sectional view of the mounting box and lid of this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing mechanism of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0022] Figure label:

[0023] 100. Mounting box; 200. Sealing ring; 300. Box cover; 400. Sealing mechanism; 401. Insert rod; 402. Limiting bracket; 403. Spring; 404. Screw; 405. Cover frame; 406. Limiting block; 407. Rubber ring; 408. Slide rod; 409. Pressure block; 410. Arc block; 411. Spring piece; 412. Stop. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] The following is combined with Figures 1-4 This invention describes a waterproof cable junction box for use in offshore photovoltaic fields.

[0030] In one embodiment, a waterproof cable connection box for offshore photovoltaic fields includes: a mounting box 100 and a cover 300. Sealing rings 200 are fixedly connected to both sides of the inner wall of the mounting box 100. A sealing mechanism 400 includes two limiting frames 402 slidably connected to the inner wall of the cover 300. Several insertion rods 401 are fixedly connected to the top of the mounting box 100, with the surfaces of the insertion rods 401 engaging with the inner wall of the cover 300. Two springs 403 are fixedly connected to the ends of the limiting frames 402, with the other ends of the springs 403 fixedly connected to the inner wall of the cover 300. A stop 412 is slidably connected to the inner wall of the cover 300, and screws 404 are threadedly connected to the inner wall of the stop 412, with the surfaces of the screws 404 threadedly connected to the inner wall of the cover 300.

[0031] In this embodiment, when connecting the photovoltaic panels in the offshore photovoltaic field with cables, the corresponding type of terminal block is installed in the mounting box 100 by bolts. The insulation layer of the cable on the photovoltaic panel is stripped off using appropriate tools to expose a certain length of conductor. The surface of the cable conductor is cleaned with a clean cloth or sandpaper to remove the oxide layer and impurities, ensuring that the conductor surface is clean and smooth to ensure a good electrical connection.

[0032] Slide the stripped cable conductor into the sealing ring 200 and insert it into the terminal block. Tighten the bolts of the terminal block with a screwdriver or wrench to ensure that the connection between the conductor and the terminal block is firm and the contact resistance meets the requirements. After the cables between the photovoltaic panels are connected, the mounting box 100 can be installed on the photovoltaic bracket or other corresponding locations using bolts.

[0033] Secure the cover 300 inside the mounting box 100, allowing the insertion rod 401 to engage within the cover 300. Loosen the limiting bracket 402; the elastic force of the spring 403 pushes the limiting bracket 402 to move and engage with the insertion rod 401. Push the stop bracket 412 down into the cover 300, ensuring the end of the limiting bracket 402 contacts the end of the stop bracket 412. Thread the screw 404 into the stop bracket 412 and the cover 300. Connect the grounding wire to the grounding bolt of the connecting box, ensuring reliable grounding. The grounding resistance should meet relevant standard requirements and generally should not exceed the specified value.

[0034] like Figure 2 As shown, an arc-shaped block 410 is slidably connected to the upper end of the inner wall of the mounting box 100. The surface of the arc-shaped block 410 contacts the surface of the sealing ring 200. A spring piece 411 is fixedly connected to the top of the arc-shaped block 410. The top end of the spring piece 411 is fixedly connected to the inner top wall of the mounting box 100. Two pressure blocks 409 are fixedly connected to the bottom of the box cover 300. The surface of the pressure block 409 is slidably connected to the inner wall of the mounting box 100.

[0035] In this embodiment, the cover 300 is snapped into the mounting box 100, causing the pressure block 409 to press down on the top of the arc-shaped block 410, thereby causing the arc-shaped block 410 to press against the surface of the sealing ring 200, and causing the sealing ring 200 to be tightly attached to the surface of the cable.

[0036] like Figure 4 As shown, a shielding frame 405 is hinged to the end of the baffle 412, a rubber ring 407 is fixedly connected to the end of the baffle 412, a limiting block 406 is slidably connected to the upper end of the inner wall of the baffle 412, the bottom of the limiting block 406 contacts the top of the shielding frame 405, a sliding rod 408 is fixedly connected to the bottom of the baffle 412, and the surface of the sliding rod 408 is slidably connected to the inner wall of the box cover 300.

[0037] The mounting box 100, box cover 300, screws 404, cover frame 405, pressure block 409 and arc block 410 are all stainless steel components, with good strength and corrosion resistance.

[0038] The sealing ring 200, the limiting frame 402, the limiting block 406, and the rubber ring 407 are all EPDM rubber components, which have excellent chemical corrosion resistance and elasticity, and can effectively resist the erosion of seawater, rainwater, and possible industrial pollutants, thus extending the service life of the sealing ring 200, the limiting frame 402, the limiting block 406, and the rubber ring 407.

[0039] In this embodiment, the cover frame 405 is flipped so that the bottom of the cover frame 405 abuts against the end of the baffle 412, and the surface of the rubber ring 407 is pressed tightly against the inner wall of the cover frame 405, pushing the limiting block 406 to move within the baffle 412 and abut against the top of the cover frame 405.

[0040] Working principle: The cover 300 is inserted into the mounting box 100, causing the pressure block 409 to press down on the top of the arc-shaped block 410, which in turn presses the arc-shaped block 410 against the surface of the sealing ring 200, making the sealing ring 200 tightly adhere to the cable surface. The limit bracket 402 is loosened, and the elastic force of the spring 403 pushes the limit bracket 402 to move and engage with the insertion rod 401. The stop bracket 412 is pushed down into the cover 300, so that the end of the limit bracket 402 contacts the end of the stop bracket 412. The screw 404 is threaded into the stop bracket 412 and the cover 300. The cover frame 405 is flipped, so that the bottom of the cover frame 405 abuts against the end of the stop bracket 412, and the surface of the rubber ring 407 is tightly adhered to the inner wall of the cover frame 405. The limiting block 406 is pushed to move within the stop bracket 412 and abut against the top of the cover frame 405.

[0041] It should be noted that the mounting box 100, sealing ring 200, box cover 300, spring 403, screw 404 and spring 411 mentioned above are all components with relatively mature existing technology. The specific model can be selected according to actual needs, and the specific power supply method can be selected according to the situation, which will not be elaborated here.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A waterproof cable junction box for offshore photovoltaic fields, characterized in that, include: The mounting box (100) and the box cover (300) are provided, and sealing rings (200) are fixedly connected to both sides of the inner wall of the mounting box (100); A sealing mechanism (400) includes two limiting frames (402) slidably connected to the inner wall of the cover (300). A plurality of insert rods (401) are fixedly connected to the top of the mounting box (100). The surface of the insert rods (401) is engaged with the inner wall of the cover (300). Two springs (403) are fixedly connected to the end of the limiting frame (402). The other end of the springs (403) is fixedly connected to the inner wall of the cover (300). A stop (412) is slidably connected to the inner wall of the cover (300). A screw (404) is threadedly connected to the inner wall of the stop (412). The surface of the screw (404) is threadedly connected to the inner wall of the cover (300).

2. The waterproof cable junction box for offshore photovoltaic fields according to claim 1, characterized in that, An arc-shaped block (410) is slidably connected to the upper end of the inner wall of the mounting box (100), and the surface of the arc-shaped block (410) contacts the surface of the sealing ring (200).

3. The waterproof cable junction box for offshore photovoltaic fields according to claim 2, characterized in that, The top of the arc-shaped block (410) is fixedly connected to a spring piece (411), and the top end of the spring piece (411) is fixedly connected to the inner top wall of the mounting box (100).

4. The waterproof cable junction box for offshore photovoltaic fields according to claim 1, characterized in that, The bottom of the cover (300) is fixedly connected to two pressure blocks (409), and the surface of the pressure blocks (409) is slidably connected to the inner wall of the mounting box (100).

5. The waterproof cable junction box for offshore photovoltaic fields according to claim 1, characterized in that, The end of the baffle (412) is hinged to a cover frame (405).

6. The waterproof cable junction box for offshore photovoltaic fields according to claim 1, characterized in that, A rubber ring (407) is fixedly connected to the end of the baffle (412).

7. The waterproof cable junction box for offshore photovoltaic fields according to claim 1, characterized in that, A limiting block (406) is slidably connected to the upper end of the inner wall of the baffle (412), and the bottom of the limiting block (406) contacts the top of the cover frame (405).

8. The waterproof cable junction box for offshore photovoltaic fields according to claim 1, characterized in that, The bottom of the baffle (412) is fixedly connected to a slide rod (408), and the surface of the slide rod (408) is slidably connected to the inner wall of the box cover (300).

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