Photovoltaic combiner box

Abstract

The utility model discloses a photovoltaic combiner box, which comprises a protective box body, a frame seat is embedded and fixed on the front side of the bottom of the protective box body, a plurality of wiring holes are arranged at the left and right sides of the bottom of the frame seat at equal intervals, sealing backing rings are fixedly connected in the wiring holes, ring clamps are erected right below the sealing backing rings, and the ring clamps are fixedly connected with the frame seat. Extrusion rubber sleeves are fixedly connected to the inner sides of the ring clamps, supporting rods are fixedly embedded to the right sides of the tops of the ring clamps, the top ends of the supporting rods stretch into the inner wall of the frame base and are fixedly connected with the inner wall of the frame base, and reserved grooves are formed in the left sides of the ring clamps and the extrusion rubber sleeves in the vertical direction; the ring clamp and the extrusion rubber sleeve are arranged and matched with the threaded rod to clamp, limit and fix the photovoltaic wiring, so that the downward tension influence of the wiring end extending into the box body caused by the gravity of the wiring end is greatly reduced, and the wiring end is ensured not to generate the problems of tensile deformation and falling off in the long-term connection process; and stable and lasting power connection is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation equipment, in particular to a photovoltaic busbar box. Background Technique

[0002] The photovoltaic busbar box is a wiring device that ensures the orderly connection and busbar function of photovoltaic modules in a photovoltaic power generation system. It means that users can connect a certain number of photovoltaic cells with the same specifications in series to form photovoltaic strings, and then connect several photovoltaic strings in parallel to the photovoltaic busbar box. After busbar connection in the busbar box, through a controller, a DC power distribution cabinet, a photovoltaic inverter, and an AC power distribution cabinet, they are used in a supporting manner to form a complete photovoltaic power generation system to realize grid connection with the commercial power. Therefore, there are many wiring positions required on the outside, and they are evenly arranged at the bottom of the box body to cooperate with the wiring for connection. However, the thickness of the wiring varies according to its usage requirements, which results in gaps in the holes opened at the bottom of the box body after the wiring is introduced, making it easy for mosquitoes and insects to enter and cause pollution and contact short-circuit problems. In addition, after the wiring is introduced into the box body for connection, the wiring terminal will be affected by the downward pulling force generated by the gravity of its own wiring. Over time, the wiring terminal is prone to stretching deformation and falling off problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide a photovoltaic busbar box, which fits and seals the outer side of the photovoltaic wiring to prevent mosquitoes and insects from entering and causing pollution and contact short-circuit problems. In addition, it also clamps and limits the photovoltaic wiring to fix it, greatly reducing the influence of the downward pulling force generated by the gravity of its own wiring on the wiring terminal extending into the box body, ensuring that the wiring terminal will not undergo stretching deformation and falling off problems during long-term connection, and guaranteeing stable and lasting power connection.

[0004] To achieve the above object, a photovoltaic busbar box is provided, which includes a protective box body. A pedestal is fitted and fixed to the front side of the bottom of the protective box body. A plurality of wiring holes are equidistantly arranged on the left and right of the bottom of the pedestal. The wiring holes penetrate the pedestal upward and communicate with the inside of the protective box body. Sealing gasket rings are fixedly connected in the wiring holes. Clamping rings are arranged right below the sealing gasket rings. Extrusion rubber sleeves are fixedly connected to the inner sides of the clamping rings. Support rods are fitted and fixed to the upper right sides of the tops of the clamping rings. The tops of the support rods extend into the inner wall of the pedestal and are fixedly connected thereto. Reserved grooves are arranged in the vertical direction on the left sides of the clamping rings and the extrusion rubber sleeves. Clamping heads are symmetrically fixed to the front and rear of the middle of the left side of the clamping ring. A threaded rod is arranged at the center of the opposite sides of the clamping heads. The threaded rod correspondingly extends backward into the inner wall of the clamping head and is rotatably connected thereto. The threaded rod correspondingly penetrates through the clamping head forward and is threadedly connected thereto. A rotating shaft is fixedly connected to the front end of the threaded rod. By arranging a pedestal at the wiring port of the busbar box and cooperating with the sealing gasket ring to fit and seal the outer side of the photovoltaic wiring, it is avoided that mosquitoes enter and cause pollution and contact short-circuit problems. In addition, a clamping ring and an extrusion rubber sleeve are also arranged in a supporting manner right below the sealing gasket ring, and the threaded rod is used to clamp and limit the photovoltaic wiring, greatly reducing the downward pulling force generated by the gravity of the wiring itself on the wiring end extending into the box body, ensuring that the wiring end will not be stretched and deformed and fall off during the long-term connection process, and ensuring stable and lasting power connection.

[0005] According to the described photovoltaic busbar box, an insulating protective layer is sleeved on the outer side of the rotating shaft. For anti-electric leakage protection, improving safety and anti-slip performance.

[0006] According to the described photovoltaic busbar box, a box door is opened at the center of the front side of the protective box body. The left side of the box door is rotationally matched with the protective box body through a hinge. It is convenient for maintenance personnel to open the box body for operation.

[0007] According to the described photovoltaic busbar box, a lock catch is assembled in the middle of the left side of the box door. To improve safety.

[0008] According to the described photovoltaic busbar box, a layer of frosted film is attached to the inner side of the extrusion rubber sleeve. To improve the anti-slip stability of the extrusion rubber sleeve for clamping and fixing the wiring.

[0009] According to the described photovoltaic busbar box, rounded corners are symmetrically arranged at the inner edges of the upper and lower sides of the sealing gasket ring, and a sliding film is covered on the cut surface of each rounded corner. To facilitate the quick insertion and extraction of the photovoltaic wiring.

[0010] According to the described photovoltaic busbar box, rubber rods are fixedly connected in the left-right direction at the bottom of the rear side of the protective box body. When mounted against a wall, it can make the bottom of the box body have a flexible buffer contact with the wall surface.

[0011] According to the described photovoltaic busbar box, a bushing is fixedly connected to the center of the top of the protective box body. A bushing shaft is snap-fitted and fixed inside the top of the bushing, and a cover is fixedly connected to the top end of the bushing shaft. The whole box body is protected against falling dust to avoid the accumulation of dust.

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

[0013] In the present utility model, a pedestal is arranged at the wiring port of the busbar box and cooperates with a sealing gasket ring to fit and seal the outer side of the photovoltaic wiring, avoiding problems such as mosquitoes entering and causing pollution and contact short circuit. In addition, a ring clip and an extrusion rubber sleeve are arranged below the sealing gasket ring, and cooperate with a threaded rod to clamp and limit the photovoltaic wiring, greatly reducing the downward pulling force on the wiring end extending into the box body due to its own wiring gravity, ensuring that the wiring end will not be stretched, deformed and fall off during long-term connection, and guaranteeing stable and lasting power connection.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present utility model with reference to the drawings and embodiments;

[0016] Figure 1 It is a first perspective schematic diagram of a photovoltaic busbar box of the present utility model;

[0017] Figure 2 It is a second perspective schematic diagram of a photovoltaic busbar box of the present utility model;

[0018] Figure 3 It is a distribution schematic diagram of the ring clips in a photovoltaic busbar box of the present utility model;

[0019] Figure 4 It is a connection structure schematic diagram of the ring clips in a photovoltaic busbar box of the present utility model.

[0020] In the figure: 1. Protective box body; 2. Pedestal; 3. Wiring hole; 4. Sealing gasket ring; 5. Ring clip; 6. Extrusion rubber sleeve; 7. Support rod; 8. Reserved groove; 9. Chuck; 10. Threaded rod; 11. Rotating shaft; 12. Sliding membrane; 13. Box door; 14. Lock; 15. Rubber rod; 16. Bushing; 17. Bushing shaft; 18. Cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution: a photovoltaic busbar box, including a protective box body 1, a pedestal 2 is fixedly embedded at the front side of the bottom of the protective box body 1, and a plurality of wiring holes 3 are equidistantly arranged on the left and right of the bottom of the pedestal 2. The wiring holes 3 penetrate upward through the pedestal 2 and communicate with the inside of the protective box body 1. Sealing gasket rings 4 are fixedly connected in the wiring holes 3. Ring clips 5 are arranged directly below the sealing gasket rings 4. Extrusion rubber sleeves 6 are fixedly connected to the inner sides of the ring clips 5. Support rods 7 are fixedly embedded at the upper right sides of the tops of the ring clips 5. The tops of the support rods 7 extend into the inner wall of the pedestal 2 and are fixedly connected thereto. Reserved grooves 8 are arranged in the up and down directions on the left sides of the ring clips 5 and the extrusion rubber sleeves 6. Clamping heads 9 are symmetrically fixed at the front and rear of the middle of the left side of the ring clip 5. A threaded rod 10 is arranged at the center of the opposite sides of the clamping heads 9. The threaded rod 10 correspondingly extends backward into the inner wall of the clamping head 9 and is rotatably connected thereto. The threaded rod 10 correspondingly penetrates forward through the clamping head 9 and is threadedly connected thereto. A rotating shaft 11 is fixedly connected to the front end of the threaded rod 10. An insulating protective layer is sleeved on the outer side of the rotating shaft 11 to fit and seal the outer side of the photovoltaic wiring, avoiding problems such as pollution caused by mosquitoes entering and contact short circuit. In addition, the photovoltaic wiring is clamped and limited to be fixed, greatly reducing the downward pulling force effect generated by the gravity of its own wiring on the wiring end extending into the box body, ensuring that the wiring end will not be stretched and deformed and fall off during the long-term connection process, and ensuring stable and lasting power connection.

[0023] A box door 13 is opened at the center of the front side of the protective box body 1. The left side of the box door 13 is rotatably matched with the protective box body 1 through a hinge. A lock catch 14 is assembled at the middle of the left side of the box door 13, providing an assembly space while ensuring safety isolation.

[0024] Rubber rods 15 are fixedly connected in the left and right directions at the bottom of the rear side of the protective box body 1. A clamping sleeve 16 is fixedly connected at the center of the top of the protective box body 1. A clamping shaft 17 is clamped and fixed inside the top of the clamping sleeve 16. A cover 18 is fixedly connected to the top of the clamping shaft 17 to provide buffer protection and dust isolation for the box body.

[0025] A layer of frosted film is attached to the inner side of the extrusion rubber sleeve 6. Fillets are symmetrically arranged at the inner edges of the upper and lower sides of the sealing gasket ring 4. A sliding film 12 is covered on the fillet section, facilitating the introduction of wiring and performing anti-slip limiting on its outer side.

[0026] Working principle: In the present utility model, a mount 2 is provided at the wiring port of the busbar box and cooperates with a sealing gasket ring 4 to fit and seal the outer side of the photovoltaic wiring, avoiding problems such as contamination and contact short circuit caused by mosquitoes entering. In addition, a ring clamp 5 and an extrusion rubber sleeve 6 are provided under the sealing gasket ring 4, and cooperate with a threaded rod 10 to clamp and limit the photovoltaic wiring, greatly reducing the downward pulling force on the wiring end extending into the protection box body 1 due to the gravity of its own wiring, ensuring that the wiring end will not be stretched and deformed or fall off during the long-term connection process, and ensuring stable and lasting power connection.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the purpose of the present utility model.

Claims

1. A photovoltaic busbar box, comprising a protective box body (1), characterized in that, A base seat (2) is fitted and fixed to the front side of the bottom of the protective box body (1). A plurality of wiring holes (3) are equidistantly arranged on the left and right of the bottom of the base seat (2). The wiring holes (3) penetrate upward through the base seat (2) and communicate with the inside of the protective box body (1). Sealing gasket rings (4) are fixedly connected in the wiring holes (3). Ring clips (5) are arranged right below the sealing gasket rings (4). Extrusion rubber sleeves (6) are fixedly connected to the inner sides of the ring clips (5). Support rods (7) are fitted and fixed to the upper right sides of the tops of the ring clips (5). The tops of the support rods (7) extend into the inner wall of the base seat (2) and are fixedly connected thereto. Reserved grooves (8) are arranged in the up-down direction on the left side of the ring clips (5) and the extrusion rubber sleeves (6). Clamping heads (9) are symmetrically fixed to the front and back of the middle of the left side of the ring clips (5). A threaded rod (10) is arranged at the center of the opposite sides of the clamping heads (9). The threaded rod (10) correspondingly extends backward into the inner wall of the clamping head (9) and is rotatably connected thereto. The threaded rod (10) correspondingly penetrates forward through the clamping head (9) and is threadedly connected thereto. A rotating shaft (11) is fixedly connected to the front end of the threaded rod (10).

2. The PV busbar box according to claim 1, characterized in that: An insulating protective layer is sleeved on the outer side of the rotating shaft (11).

3. A photovoltaic busbar box according to claim 1, characterized in that: A box door (13) is opened at the center of the front side of the protective box body (1). The left side of the box door (13) is rotatably matched with the protective box body (1) through a hinge.

4. The PV busbar box according to claim 3, wherein: A lock catch (14) is assembled at the middle of the left side of the box door (13).

5. A photovoltaic busbar box according to claim 1, characterized in that: A layer of frosted film is attached to the inner side of the extrusion rubber sleeve (6).

6. The photovoltaic busbar box according to claim 1, characterized in that: Rounded corners are symmetrically arranged at the upper and lower inner edges of the sealing gasket ring (4). A sliding film (12) is covered on the section of each rounded corner.

7. The PV busbar box according to claim 1, wherein: Rubber rods (15) are fixedly connected in the left-right direction at the bottom of the rear side of the protective box body (1).

8. The PV busbar box according to claim 1, characterized in that: A clamping sleeve (16) is fixedly connected to the center of the top of the protective box body (1). A clamping shaft (17) is clamped and fixed to the inner side of the top of the clamping sleeve (16). A cover (18) is fixedly connected to the top of the clamping shaft (17).

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