Fireproof distributed photovoltaic grid-connected cabinet

Abstract

The utility model discloses a fireproof distributed photovoltaic grid-connected cabinet which comprises a cabinet body, one side of the cabinet body is provided with an air inlet, the inner top wall of the cabinet body is provided with two symmetrical air outlets, the outer walls of the two sides of the cabinet body are fixedly connected with carbon dioxide fire extinguishers, and the upper end faces of the carbon dioxide fire extinguishers are fixedly connected with connecting pipes. The end, away from the carbon dioxide fire extinguisher, of the connecting pipe is fixedly connected with a spray head, the spray head is fixedly connected with the cabinet body, a telescopic groove is formed in the inner top wall of the air inlet, the telescopic groove is movably connected with a first sealing plate, and through cooperative use of the air inlet and the two air outlets, the cabinet body can be well cooled, and the temperature in the cabinet body is prevented from being too high; through cooperation of use of a carbon dioxide fire extinguisher, rapid fire extinguishing treatment in the cabinet body, and use of a first sealing plate and a second sealing plate, the interior of the cabinet body can be sealed, air is prevented from entering the cabinet body, rapid fire extinguishing is realized, and the safety of the grid-connected cabinet in the fireproof use process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic grid-connected cabinets, in particular to a fireproof distributed photovoltaic grid-connected cabinet. Background Art

[0002] Photovoltaic grid-connected cabinet is a power interface device used in solar photovoltaic power stations. Its main function is to connect the electric energy generated by the solar photovoltaic power generation system into the power grid and convert it into alternating current suitable for power grid operation. It has functions such as power distribution, power metering, protection control, etc. It can monitor the temperature of the equipment and realize remote monitoring, etc.

[0003] During the construction and commissioning of existing photovoltaic grid-connected cabinets, heat dissipation of the cabinet is generally treated to prevent the internal temperature of the cabinet from being too high, which may lead to aging of the internal circuits of the cabinet, short circuits, and other problems. However, due to poor heat dissipation during the use of the grid-connected cabinet, internal circuit aging, short circuits, and even fires may occur. Once a fire occurs, it will cause great harm if it is not discovered and controlled in time. The existing grid-connected cabinets lack a fire handling structure, which is not convenient for controlling the fire in the first time, and thus need to be optimized and improved. Utility Model Content

[0004] The purpose of the utility model is to provide a fireproof distributed photovoltaic grid-connected cabinet. Through the coordinated use of an air inlet and two air outlets, the cabinet can be well cooled to prevent the temperature inside the cabinet from being too high. At the same time, with the use of a carbon dioxide fire extinguisher, the cabinet can be quickly extinguished. The use of a first sealing plate and a second sealing plate can seal the cabinet to isolate air from entering, achieve rapid fire extinguishing, and improve the safety of the grid-connected cabinet during fire protection use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fireproof distributed photovoltaic grid-connected cabinet, comprising a cabinet, an air inlet is provided on one side of the cabinet, two symmetrical air outlets are provided on the top wall of the cabinet, carbon dioxide fire extinguishers are fixedly connected to the outer walls on both sides of the cabinet, a connecting pipe is fixedly connected to the upper end face of the carbon dioxide fire extinguisher, a nozzle is fixedly connected to the end of the connecting pipe away from the carbon dioxide fire extinguisher, the nozzle is fixedly connected to the cabinet, a telescopic groove is provided on the inner top wall of the air inlet, a first sealing plate is movably connected to the telescopic groove, two symmetrical first electric telescopic rods are fixedly connected to the upper end face of the first sealing plate, the first electric telescopic rod is fixedly connected to the cabinet, a heat dissipation hood is fixedly connected to the upper end face of the cabinet, a plurality of evenly distributed heat dissipation grooves are provided on the front and rear sides of the heat dissipation hood, a lifting plate is provided above the heat dissipation hood, and two symmetrical second sealing plates are fixedly connected to the lower end face of the lifting plate.

[0006] The beneficial effects of the utility model are as follows: by using the air inlet and the air outlet in coordination, the cabinet can be effectively cooled to ensure air circulation; the two carbon dioxide fire extinguishers can provide the cabinet with a fire extinguishing function, and when a fire occurs, a rapid fire extinguishing process can be performed; the use of the first sealing plate and the second sealing plate can quickly seal the cabinet to prevent air from entering, thereby avoiding the spread of the fire and assisting the carbon dioxide fire extinguisher in rapidly extinguishing the fire;

[0007] In order to achieve rapid fire extinguishing in the cabinet;

[0008] As a further improvement of the above technical solution: a second electric telescopic rod is fixedly connected to the upper end surface of the second sealing plate, and the end of the second electric telescopic rod away from the lifting plate is fixedly connected to the rain shield, and connecting rods are fixedly connected to the four corners of the lower end surface of the rain shield, and the connecting rods are fixedly connected to the cabinet body.

[0009] The beneficial effects of this improvement are: by using the second electric telescopic rod, the second sealing plate can be quickly and flexibly moved, thereby improving the flexibility of using the second sealing plate, and the rainproof shed can protect the heat dissipation cover to prevent rainwater from penetrating into the heat dissipation groove;

[0010] In order to shield the top of the cabinet to prevent rainwater from seeping in;

[0011] As a further improvement of the above technical solution: a heat dissipation fan and a first filter are respectively provided at the air outlet, and the heat dissipation fan and the first filter are both fixedly connected to the cabinet.

[0012] The beneficial effects of this improvement are: by using the heat dissipation fan and the first filter, the air outlet can be used to quickly dissipate heat in the cabinet to prevent heat from accumulating in the cabinet, so that the cabinet can be quickly cooled, and the first filter can be used to filter external dust;

[0013] In order to quickly discharge the heat in the cabinet;

[0014] As a further improvement of the above technical solution: guide plates are fixedly connected to the inner walls on both sides of the cabinet, and the two nozzles are staggered.

[0015] The beneficial effects of this improvement are: by using the guide plate, the carbon dioxide sprayed by the nozzle can be guided to make it diffuse better and increase the coverage;

[0016] In order to achieve the diversion of the injected carbon dioxide;

[0017] As a further improvement of the above technical solution: a second filter is provided at the air inlet, the second filter is fixedly connected to the cabinet, a rain cover is provided on one side of the second filter, and the rain cover is fixedly connected to the cabinet.

[0018] The beneficial effects of this improvement are: by using the second filter, external dust can be filtered to prevent dust from entering the cabinet, causing dust to accumulate on the surface of internal circuits and electrical components, affecting the heat dissipation pattern, and at the same time, the rain cover can prevent rainwater from penetrating into the cabinet;

[0019] In order to filter the external dust;

[0020] As a further improvement of the above technical solution: a smoke alarm is fixedly connected to the top wall of the cabinet.

[0021] The beneficial effects of this improvement are: through the use of the smoke alarm, the fire in the cabinet can be quickly identified, and the fire point in the cabinet can be warned and handled through the identification of the smoke alarm;

[0022] In order to identify smoke and find fire at the first time;

[0023] As a further improvement of the above technical solution: a cabinet door is hingedly connected to the front side of the cabinet body, and a handle is fixedly connected to the cabinet door.

[0024] The beneficial effects of this improvement are: through the use of cabinet doors and handles, it is convenient for staff to open and close the cabinet, and it is convenient to regularly repair and maintain the lines and equipment inside the cabinet, ensuring the safety and stability of the grid-connected cabinet;

[0025] In order to open and close the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The three-dimensional structure provided by the utility model is shown in FIG. Figure 1 ;

[0027] Figure 2 A top view provided for the utility model;

[0028] Figure 3 The utility model provides Figure 2 The three-dimensional cross-section view at AA in the middle;

[0029] Figure 4 A front view provided for the utility model;

[0030] Figure 5 The utility model provides Figure 4 A three-dimensional cross-section view at the middle BB;

[0031] Figure 6 The three-dimensional structure provided by the utility model is shown in FIG. Figure 2 ;

[0032] Figure 7 The utility model provides Figure 6 Enlarged view of point A in the middle.

[0033] In the figure, 1, cabinet body; 11, air inlet; 12, air outlet; 13, carbon dioxide fire extinguisher; 14, connecting pipe; 15, nozzle; 16, telescopic slot; 17, first sealing plate; 18, first electric telescopic rod; 19, heat dissipation cover; 20, heat dissipation slot; 21, lifting plate; 22, second sealing plate; 31, second electric telescopic rod; 32, rain shelter; 33, connecting rod; 41, cooling fan; 42, first filter; 51, guide plate; 61, second filter; 62, rain cover; 71, smoke alarm; 81, cabinet door; 82, handle. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0035] like Figures 1 to 7As shown, a fireproof distributed photovoltaic grid-connected cabinet provided by an embodiment of the utility model includes a cabinet body 1, an air inlet 11 is provided on one side of the cabinet body 1, and two symmetrical air outlets 12 are provided on the top wall inside the cabinet body 1. The coordinated use of the air inlet 11 and the two air outlets 12 can ensure good ventilation in the cabinet body 1 and facilitate heat dissipation in the cabinet body 1. A cooling fan 41 and a first filter 42 are respectively provided at the air outlet 12, and the cooling fan 41 and the first filter 42 are fixedly connected to the cabinet body 1. The use of two cooling fans 41 and two first filters 42 can quickly discharge the heat in the cabinet 1, improve the heat dissipation effect of the cabinet 1, and cooperate with the use of the first filter 42 to prevent dust from entering the cabinet 1 from the air outlet 12. Carbon dioxide fire extinguishers 13 are fixedly connected to the outer walls of both sides of the cabinet 1. The upper end surface of the carbon dioxide fire extinguisher 13 is fixedly connected to a connecting pipe 14. The end of the connecting pipe 14 away from the carbon dioxide fire extinguisher 13 is fixedly connected to a nozzle 15. The nozzle 15 is fixedly connected to the cabinet 1. The use of two carbon dioxide fire extinguishers 13 can quickly extinguish the fire point. The air inlet 1 The inner top wall of the cabinet 1 is provided with a telescopic groove 16, and the telescopic groove 16 is movably connected with a first sealing plate 17. The upper end surface of the first sealing plate 17 is fixedly connected with two symmetrical first electric telescopic rods 18. The first electric telescopic rods 18 are fixedly connected to the cabinet 1. The extension of the two first electric telescopic rods 18 can quickly block the air inlet 11 with the first sealing plate 17 to prevent air from entering. The upper end surface of the cabinet 1 is fixedly connected with a heat dissipation cover 19. The heat dissipation cover 19 is provided with a plurality of evenly distributed heat dissipation grooves 20 on both the front and rear sides. A lifting plate 21 is provided above the heat dissipation cover 19, and the lower end surface of the lifting plate 21 is fixedly connected with two symmetrical The second sealing plate 22 and the lifting plate 21 can carry two second sealing plates 22 to block the heat dissipation slot 20, and assist the first sealing plate 17 to seal the cabinet 1 to prevent the outside air from entering, prevent the fire from expanding and spreading, and isolate the air to assist the carbon dioxide fire extinguisher 13 to quickly extinguish the fire. The upper end surface of the second sealing plate 22 is fixedly connected to the second electric telescopic rod 31, and the end of the second electric telescopic rod 31 away from the lifting plate 21 is fixedly connected to the rain shelter 32, and the four corners of the lower end surface of the rain shelter 32 are fixedly connected to the connecting rod 33, and the connecting rod 33 is fixedly connected to the cabinet 1. The second electric telescopic rod 31 By using the lifting plate 21, the lifting and lowering of the lifting plate 21 can be controlled flexibly and quickly. The rain shield 32 can shield the top of the cabinet 1 to prevent rainwater from penetrating from the heat dissipation slot 20 and damaging the circuits and electrical components in the cabinet 1. Guide plates 51 are fixedly connected to the inner walls on both sides of the cabinet 1. The two nozzles 15 are staggered. The two guide plates 51 can guide the carbon dioxide of the corresponding nozzles 15 to achieve a better fire extinguishing effect. A second filter screen 61 is provided at the air inlet 11, and the second filter screen 61 is fixedly connected to the cabinet 1. A rain cover 62 is provided on one side of the second filter screen 61, and the rain cover 62 is fixedly connected to the cabinet 1.The second filter 61 can filter the external dust. The dust will enter the cabinet 1 and dock on the circuit and electrical components, affecting the heat dissipation effect of the circuit and electrical components. The rain cover 62 can prevent rain from penetrating from the air inlet 11. A smoke alarm 71 is fixedly connected to the top wall of the cabinet 1. The smoke alarm 71 can quickly identify the fire in the cabinet 1, which is convenient for quickly controlling and handling the fire. The cabinet 1 is hinged with a cabinet door 81 on the front side, and a handle 82 is fixedly connected to the cabinet door 81. Through the use of the cabinet door 81 and the handle 82, it is convenient for the staff to flexibly open and close the cabinet door 81, and it is convenient to regularly inspect and repair the circuit and electrical components in the cabinet 1, thereby improving the safety of the cabinet 1.

[0036] The working principle and use process of the utility model: when in use, the ventilation in the cabinet 1 is ensured by the coordinated use of the air inlet 11 and the two air outlets 12. The two cooling fans 41 can quickly discharge the heat in the cabinet 1. The first filter 42 and the second filter 61 can filter the external dust to prevent the dust from docking on the circuit and electrical components and affecting the heat dissipation effect. Once a fire occurs in the cabinet 1, the smoke alarm 71 issues a warning, and the two carbon dioxide fire extinguishers 13 extinguish the fire in the cabinet 1 through their respective corresponding nozzles 15. At the same time, the two first electric telescopic rods 18 carry the first sealing plate 17 to seal the air inlet 11, and the second electric telescopic rod 31 extends out, and the two second sealing plates 22 on the lower end surface of the lifting plate 21 seal the position of the heat dissipation groove 20 to prevent external air from entering the cabinet 1, and assist the two carbon dioxide fire extinguishers 13 to perform rapid fire extinguishing, thereby realizing the use process of the entire grid-connected cabinet.

[0037] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fireproof distributed photovoltaic grid-connected cabinet, comprising a cabinet body (1), characterized in that: An air inlet (11) is provided on one side of the cabinet (1), two symmetrical air outlets (12) are provided on the inner top wall of the cabinet (1), carbon dioxide fire extinguishers (13) are fixedly connected to the outer walls on both sides of the cabinet (1), and a connecting pipe (14) is fixedly connected to the upper end surface of the carbon dioxide fire extinguisher (13); The end of the connecting pipe (14) away from the carbon dioxide fire extinguisher (13) is fixedly connected to a nozzle (15), and the nozzle (15) is fixedly connected to the cabinet (1). The inner top wall of the air inlet (11) is provided with a telescopic groove (16), and the telescopic groove (16) is movably connected to a first sealing plate (17). The upper end surface of the first sealing plate (17) is fixedly connected to two symmetrical first electric telescopic rods (18), and the first electric telescopic rod (18) is fixedly connected to the cabinet (1). The upper end surface of the cabinet (1) is fixedly connected to a heat dissipation cover (19), and the heat dissipation cover (19) is provided with a plurality of evenly distributed heat dissipation grooves (20) on both the front and rear sides. A lifting plate (21) is provided above the heat dissipation cover (19), and the lower end surface of the lifting plate (21) is fixedly connected to two symmetrical second sealing plates (22).

2. A fireproof distributed photovoltaic grid-connected cabinet according to claim 1, characterized in that: The upper end surface of the second sealing plate (22) is fixedly connected to a second electric telescopic rod (31); one end of the second electric telescopic rod (31) away from the lifting plate (21) is fixedly connected to a rain shelter (32); the four corners of the lower end surface of the rain shelter (32) are fixedly connected to connecting rods (33); and the connecting rods (33) are fixedly connected to the cabinet body (1).

3. The fireproof distributed photovoltaic grid-connected cabinet according to claim 1, characterized in that: A heat dissipation fan (41) and a first filter (42) are respectively provided at the air outlet (12); the heat dissipation fan (41) and the first filter (42) are both fixedly connected to the cabinet (1).

4. The fireproof distributed photovoltaic grid-connected cabinet according to claim 1, characterized in that: Guide plates (51) are fixedly connected to the inner walls on both sides of the cabinet (1), and the two nozzles (15) are staggered.

5. The fireproof distributed photovoltaic grid-connected cabinet according to claim 1, characterized in that: A second filter (61) is provided at the air inlet (11), the second filter (61) is fixedly connected to the cabinet (1), a rain cover (62) is provided on one side of the second filter (61), and the rain cover (62) is fixedly connected to the cabinet (1).

6. The fireproof distributed photovoltaic grid-connected cabinet according to claim 1, characterized in that: A smoke alarm (71) is fixedly connected to the top wall of the cabinet (1).

7. The fireproof distributed photovoltaic grid-connected cabinet according to claim 1, characterized in that: A cabinet door (81) is hingedly connected to the front side of the cabinet body (1), and a handle (82) is fixedly connected to the cabinet door (81).

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