Photovoltaic device power box

Abstract

The utility model relates to power box technical field discloses a photovoltaic equipment power box, including box body, and set up the explosion -proof door on the box body, the both sides of box body are provided with an installation box respectively, the side away from the box of each installation box is provided with the ventilation channel, and the top of each installation box is all through provided with a no.

Description

Technical Field

[0001] This utility model relates to the field of power box technology, and in particular to a power box for photovoltaic equipment. Background Technology

[0002] In hazardous locations such as chemical plants, the stable operation of photovoltaic equipment is crucial for safe production. Its supporting power boxes must have stringent explosion-proof performance to meet the site's safety regulations and prevent the combustion or explosion of surrounding flammable and explosive media caused by internal electric arcs, sparks, or high temperatures.

[0003] However, existing explosion-proof photovoltaic equipment power boxes often adopt a sealed structure design to achieve explosion-proof function. This makes it difficult to effectively dissipate the heat generated by the electrical components inside the box during operation. Due to the structural limitations under explosion-proof requirements, conventional heat dissipation methods such as natural ventilation or simple forced ventilation cannot simultaneously achieve explosion-proof sealing and heat dissipation efficiency, resulting in a technical dilemma where explosion-proof and heat dissipation are difficult to achieve in a coordinated manner. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a photovoltaic equipment power box to solve the above-mentioned shortcomings in the prior art.

[0005] Technical solution: A photovoltaic equipment power box includes a box body and an explosion-proof door installed on the box body. An installation box is provided on each side of the box body, and a ventilation channel is provided on the side of each installation box away from the box body.

[0006] Furthermore, a No. 1 connecting shell is provided through the top of each of the installation boxes, and a baffle plate that can slide up and down is provided on the inner side of the No. 1 connecting shell.

[0007] The two inner sidewalls of the box are each provided with a second fixing block, and each of the barrier plates is provided with a first fixing block. A tin-lead alloy wire is provided between the first fixing block and the corresponding second fixing block.

[0008] As a further description of the above technical solution: protective plates are connected to the two side walls of the box by connecting frames, and the edges of the protective plates are provided with guide plates, which are arranged at an angle relative to the protective plates.

[0009] As a further description of the above technical solution: A second connecting shell is provided on the top of the box body, and a first drain pipe and a third drain pipe are provided inside the second connecting shell. The first drain pipe, the third drain pipe and the box body are connected in a continuous manner. A movable sealing plug is provided between the first drain pipe and the third drain pipe, and a spring is provided on the top surface of the sealing plug. The end of the spring away from the sealing plug is connected to the second connecting shell.

[0010] As a further description of the above technical solution: the protective plate is located inside the box, and a gap is provided between the protective plate and the box.

[0011] As a further description of the above technical solution: a cooling fan assembly is provided on the inner side of each of the mounting boxes.

[0012] As a further description of the above technical solution: the barrier plate is provided with a number of wheel seats arranged in two rows side by side, and each wheel seat is rotatably provided with a pulley;

[0013] Furthermore, the first connecting shell is provided with a guide groove adapted to the pulley.

[0014] As a further description of the above technical solution: the first discharge pipe is provided with two guide shafts inside, and a mounting bracket is slidably connected to the guide shafts, and the mounting bracket is fixedly connected to the sealing plug.

[0015] As a further description of the above technical solution: A second drain pipe is connected through the side wall of the first drain pipe, and a flange is provided on the second drain pipe.

[0016] Beneficial effects: While taking into account explosion protection, the cooling fan assembly can be used to ventilate and cool the inside of the box through the ventilation channel. In the event of an accidental fire and explosion inside the box, the protective plate can first block the flame blast from directly hitting the ventilation channel and use the deflector plate to guide it away from the ventilation channel, thus buying time for the tin-lead alloy wire to melt.

[0017] Furthermore, the flame melts upon contact with the tin-lead alloy wire, and the baffle slides down under gravity, instantly blocking the passage between the enclosure and the mounting box, effectively preventing the flame from escaping and avoiding fires and explosions of other equipment in the computer room. At the same time, the drain pipe and sealing plug on the top of the enclosure can be opened in the event of an explosion and guide the flame blast wave to a safe place, greatly ensuring the safety of other equipment in the computer room and reducing accident losses. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a photovoltaic equipment power box proposed in this utility model;

[0019] Figure 2 This is a partial exploded view of the structure of this utility model;

[0020] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0021] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 5This is a partial structural cross-sectional view of the present invention;

[0023] Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure 2 .

[0024] Legend:

[0025] 1. Housing; 2. Mounting box; 3. Connecting shell No. 1; 4. Ventilation channel; 5. Cooling fan assembly; 6. Baffle plate; 7. Wheel seat; 8. Pulley; 9. Guide groove; 10. Fixing block No. 1; 11. Connecting frame; 12. Protective plate; 13. Flow guide plate; 14. Fixing block No. 2; 15. Tin-lead alloy wire; 16. Connecting shell No. 2; 17. Drain pipe No. 1; 18. Spring; 19. Guide shaft; 20. Mounting frame; 21. Sealing plug; 22. Drain pipe No. 2; 23. Flange; 24. Drain pipe No. 3. Detailed Implementation

[0026] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1-6 A photovoltaic equipment power box includes a box body 1 and an explosion-proof door installed on the box body 1. An installation box 2 is provided on each side of the box body 1. Each installation box 2 is provided with a ventilation channel 4 on the side away from the box body 1, which is a channel for ventilation and heat dissipation of the box body 1.

[0028] Furthermore, a first connecting shell 3 is provided through the top of each of the mounting boxes 2, and a sliding baffle plate 6 is provided on the inner side of the first connecting shell 3.

[0029] The two inner walls of the enclosure 1 are each provided with a second fixing block 14, and the baffle plate 6 is provided with a first fixing block 10. A tin-lead alloy wire 15 is provided between the first fixing block 10 and the second fixing block 14. It should be noted that the tin-lead alloy wire 15 can be melted instantly upon contact with the flame, so that the baffle plate 6 can slide down under its own gravity and block the front of the ventilation channel 4. This prevents the flame from shooting out from the ventilation channel 4 when the equipment inside the enclosure 1 malfunctions and catches fire, thus preventing damage to other equipment in the computer room and causing a large-scale fire.

[0030] Furthermore, protective plates 12 are connected to the two side walls of the housing 1 via connecting frames 11. The edges of the protective plates 12 are provided with guide plates 13, and the guide plates 13 are arranged at an angle relative to the protective plates 12. When the equipment inside the housing 1 catches fire and explodes, the flame blast will not directly enter the installation box 2, but will be blocked by the protective plates 12. The guide plates 13 on the protective plates 12 guide the flame blast away from the position of the installation box 2, providing time for the tin-lead alloy wire 15 to melt and preventing the flame from directly rushing into the installation box 2 and reaching the outside through the ventilation channel 4.

[0031] Furthermore, a second connecting shell 16 is provided on the top of the housing 1. Inside the second connecting shell 16 are a first drain pipe 17 and a third drain pipe 24. The radius of the first drain pipe 17 is larger than the radius of the third drain pipe 24, allowing the sealing plug 21 to naturally block the connection between the first drain pipe 17 and the third drain pipe 24. The first drain pipe 17, the third drain pipe 24, and the housing 1 are connected through each other. A movable sealing plug 21 is provided between the first drain pipe 17 and the third drain pipe 24. A spring 18 is provided on the top surface of the sealing plug 21, and the end of the spring 18 away from the sealing plug 21 is connected to the second connecting shell 16. It should be noted that the main body of the sealing plug 21 is made of rubber, while a protective shell, preferably made of aluminum, is provided on top. The spring 18 is connected to the protective shell, and the spring 18 can block the passage of the first drain pipe 17 and the third drain pipe 24 during the safe use of the box 1, which can prevent dust from entering the interior of the box 1, and can prevent the sealing plug 21 from being directly ejected during the explosion process.

[0032] Furthermore, the protective plate 12 is located inside the housing 1, and a gap is provided between the protective plate 12 and the housing 1, which can form a channel with the inner space of the mounting box 2, thereby providing the cooling fan assembly 5 to dissipate heat from the photovoltaic equipment inside the housing 1.

[0033] Furthermore, each of the mounting boxes 2 is provided with a cooling fan assembly 5 on its inner side. It should be noted that the cooling fan assembly 5 is an existing product used to dissipate heat from the photovoltaic equipment inside the box 1. It is powered by the battery inside the box 1 or directly connected to the mains power. Moreover, the two cooling fan assemblies 5 have the same airflow direction to ventilate and dissipate heat inside the box 1.

[0034] Furthermore, the barrier plate 6 is provided with a plurality of wheel seats 7 arranged in two rows side by side, and each wheel seat 7 is rotatably provided with a pulley 8;

[0035] Furthermore, the first connecting shell 3 is provided with a guide groove 9 that is compatible with the pulley 8. After the tin-lead alloy wire 15 melts, the barrier plate 6 slides down along the guide groove 9, and the pulley 8 can be used to reduce friction and achieve a rapid downward movement.

[0036] Furthermore, the first drain pipe 17 is provided with two guide shafts 19 inside, and a mounting bracket 20 is slidably connected to the guide shafts 19. The mounting bracket 20 is fixedly connected to the sealing plug 21, and can move vertically upward to the box body 1 during the process of the sealing plug 21 being lifted by the flame blast wave, without misalignment.

[0037] Furthermore, a second drain pipe 22 is connected through the side wall of the first drain pipe 17. The second drain pipe 22 is equipped with a flange 23, which can be connected to the second drain pipe 22 via a pipeline to guide the flame blast generated after the explosion and fire to a safe place outside the machine room, so as to avoid damage to other equipment.

[0038] General working principle:

[0039] When the photovoltaic equipment inside the housing 1 malfunctions, short-circuits, or experiences other unexpected events, leading to a fire and explosion inside the housing 1, the flame blast could easily escape through the ventilation channel 4 on the mounting box 2. However, this solution first uses the protective plate 12 to block the flame blast, preventing it from directly entering the interior of the mounting box 2. Furthermore, the guide plate 13 directs the flame blast away from the mounting box 2. Simultaneously, when the flame contacts the tin-lead alloy wire 15, it melts instantly, causing the barrier plate 6 to slide down and block the channel between the housing 1 and the mounting box 2. This prevents the flame from escaping through the ventilation channel 4 on the mounting box 2, thus avoiding the possibility of other equipment in the computer room catching fire and exploding if the flame escapes from the box 1, reducing losses. Moreover, because the ventilation channel 4 is blocked, the pressure inside the box 1 increases, which in turn pushes the sealing plug 21 upward, forming a through channel between the first drain pipe 17, the third drain pipe 24 and the box 1. Then, the flame blast is guided to a safe place outside the computer room through the second drain pipe 22 and the pipe connected to the second drain pipe 22, ensuring the safety of other equipment in the computer room.

[0040] The embodiments described above 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 patent. 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 patent should be determined by the appended claims.

Claims

1. A photovoltaic equipment power box, comprising a box body (1) and an explosion-proof door disposed on the box body (1), characterized in that, An installation box (2) is provided on each side of the box (1), and each installation box (2) is provided with a ventilation channel (4) on the side away from the box (1). Each of the mounting boxes (2) is provided with a first connecting shell (3) through the top, and the inner side of the first connecting shell (3) is provided with a baffle plate (6) that can slide up and down. The two inner walls of the box (1) are respectively provided with a second fixing block (14), and each of the barrier plates (6) is provided with a first fixing block (10). A tin-lead alloy wire (15) is provided between the first fixing block (10) and the corresponding second fixing block (14).

2. A photovoltaic equipment power box according to claim 1, characterized in that, The two side walls of the box (1) are respectively connected to protective plates (12) by connecting frames (11). The edge of the protective plate (12) is provided with a guide plate (13), and the guide plate (13) is arranged at an angle relative to the protective plate (12).

3. A photovoltaic equipment power box according to claim 1, characterized in that, The top of the box (1) is provided with a second connecting shell (16). Inside the second connecting shell (16) are a first drain pipe (17) and a third drain pipe (24). The first drain pipe (17), the third drain pipe (24) and the box (1) are connected in a continuous manner. A movable sealing plug (21) is provided between the first drain pipe (17) and the third drain pipe (24). A spring (18) is provided on the top surface of the sealing plug (21). The end of the spring (18) away from the sealing plug (21) is connected to the second connecting shell (16).

4. A photovoltaic equipment power box according to claim 2, characterized in that, The protective plate (12) is located inside the box (1), and there is a gap between the protective plate (12) and the box (1).

5. A photovoltaic equipment power box according to claim 1, characterized in that, Each of the mounting boxes (2) has a cooling fan assembly (5) installed on its inner side.

6. A photovoltaic equipment power box according to claim 1, characterized in that, The barrier plate (6) is provided with a number of wheel seats (7) arranged in two rows side by side, and each wheel seat (7) is rotatably provided with a pulley (8). Furthermore, the first connecting shell (3) is provided with a guide groove (9) that is compatible with the pulley (8).

7. A photovoltaic equipment power box according to claim 3, characterized in that, The first drain pipe (17) is provided with two guide shafts (19), and a mounting bracket (20) is slidably connected to the guide shafts (19), and the mounting bracket (20) is fixedly connected to the sealing plug (21).

8. A photovoltaic equipment power box according to claim 3, characterized in that, A second drain pipe (22) is connected through the side wall of the first drain pipe (17), and a flange (23) is provided on the second drain pipe (22).

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