Photovoltaic grid-connected cabinet convenient to assemble

Abstract

The utility model belongs to the technical field of photovoltaic grid-connected cabinets, and particularly relates to a photovoltaic grid-connected cabinet convenient to assemble, which comprises a cabinet body, a net partition plate arranged in the middle of an inner cavity of the cabinet body, assemblies symmetrically arranged on the upper side and the lower side of the net partition plate and used for installing electrical components, an air inlet arranged on the lower portion of the cabinet body and a heat dissipation opening arranged on the upper portion of the cabinet body. The dustproof assembly comprises a dustproof net plate arranged on the outer side of the air inlet and the heat dissipation opening, an installation frame arranged at the inner end of the dustproof net plate, a plurality of grooves formed in the cabinet body and aligned with the four side walls of the installation frame, and springs arranged in the grooves. The limiting rods are arranged on the sides, close to the mounting frame, of the springs; and the limiting holes are formed in the middles of the four side walls of the mounting frame. According to the utility model, not only can external dust and impurities be prevented from entering the cabinet body, but also the dustproof net plate can be conveniently mounted and dismounted, so that the dustproof net plate can be conveniently overhauled in the future, and irrelevant personnel can be prevented from mistakenly dismounting the dustproof net plate from the outer side of the cabinet body.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic grid-connected cabinets, and in particular relates to a photovoltaic grid-connected cabinet which is easy to assemble. Background Art

[0002] The photovoltaic grid-connected cabinet, as the total outlet of the photovoltaic power station, exists in the photovoltaic system. It is a distribution device connecting the photovoltaic power station and the power grid. Its main function is to serve as the dividing point between the photovoltaic power generation system and the power grid.

[0003] The Chinese patent with the authorization announcement number CN 214153709 U discloses a distributed photovoltaic power generation grid-connected power distribution cabinet, including a base, a power distribution cabinet body is fixedly installed on the upper end of the base, a heat dissipation port and a water outlet are arranged on the left and right sides of the power distribution cabinet body, and the water outlet is located at the lower end of the heat dissipation port, a first door body is rotatably connected to the lower end of the front of the power distribution cabinet body, a first handle is rotatably connected to the outer wall of the first door body, a first groove is opened at the upper end of the first door body, a second door body is rotatably connected to the upper end of the front of the power distribution cabinet body, and an observation window is embedded in the interior of the second door body. The utility model arranges the second groove and the heat sink, and when it rains, rainwater flows along the inclined arrangement The rainwater flows into the interior of the second groove through the ceiling, and then flows into the interior of the heat sink along the first hole, absorbing the heat inside the distribution cabinet body. The rainwater then cools the heat sink to accelerate the heat dissipation inside the distribution cabinet body. The distribution cabinet in the above patent discharges excess heat in the cabinet through the heat dissipation port during use, but no components are provided at the heat dissipation port to intercept external dust and impurities. Since the photovoltaic grid-connected cabinet is exposed to the air for a long time, dust in the air will enter the cabinet through the heat dissipation port and accumulate on the electrical components, which not only affects the heat dissipation of the electrical components, but also affects the service life of the electrical components. Utility Model Content

[0004] In view of the above problems, the purpose of the present utility model is to provide a photovoltaic grid-connected cabinet that is easy to assemble and solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the utility model adopts the following technical solution: a photovoltaic grid-connected cabinet that is easy to assemble, comprising a cabinet body, a mesh partition plate arranged in the middle of the cabinet body cavity, components symmetrically arranged on the upper and lower sides of the mesh partition plate and used to install electrical components, an air inlet arranged at the lower part of the cabinet body, and a heat dissipation port arranged at the upper part of the cabinet body, wherein the interior of the air inlet and the heat dissipation port are detachably connected with a dustproof component, and the dustproof component comprises a dustproof mesh plate arranged on the outside of the air inlet and the heat dissipation port, an installation frame arranged at the inner end of the dustproof mesh plate, a plurality of grooves opened in the cabinet body and aligned with the four side walls of the installation frame, a spring arranged in the groove, a limit rod arranged on the side of the spring close to the installation frame, and a limit hole opened in the middle of the four side walls of the installation frame and adapted to the limit rod.

[0006] The beneficial effects of the utility model are as follows: dustproof components are arranged at both the air inlet and the heat dissipation outlet, which can not only prevent external dust and impurities from entering the cabinet, but also facilitate the installation and disassembly of the dustproof screen, so as to facilitate the inspection and maintenance of the dustproof screen in the future, and at the same time prevent unauthorized personnel from accidentally disassembling the dustproof screen from the outside of the cabinet.

[0007] To facilitate the removal of the installation frame and dust screen:

[0008] As a further improvement of the above technical solution: a shifting rod is arranged on the inner side of the limit rod, and a sliding groove matched with the shifting rod is opened on the inner side wall of the cabinet.

[0009] The beneficial effect of this improvement is that when the dust screen is disassembled, the lever is slid along the slide groove, driving the limit rod to slide into the groove, and the spring is squeezed to release the limit of the limit rod on the installation frame.

[0010] In order to speed up the heat dissipation in the photovoltaic grid-connected cabinet:

[0011] As a further improvement of the above technical solution: a fan is arranged at the bottom of the cabinet, and a ventilation plate is arranged above the fan.

[0012] The beneficial effect of this improvement is that when cooling the electrical components in the photovoltaic grid-connected cabinet, the fan will blow the gas entering the cabinet through the air inlet upward through the ventilation plate, so that it will take away the heat emitted by the electrical components and dissipate it along the heat dissipation port.

[0013] To facilitate assembly and disassembly of electrical components:

[0014] As a further improvement of the above technical solution: the components for installing electrical components include a mounting plate arranged inside the cabinet, a clamping plate symmetrically arranged on both sides of the mounting plate and having multiple mounting holes, a mounting rod arranged at the four corners of the mounting plate and one end of which is fixedly connected to the cabinet, a limit block arranged on the outer wall of the mounting rod and located at the rear side of the mounting plate, and a fastening screw arranged on the side of the mounting rod away from the limit block and used to fix the mounting plate.

[0015] The beneficial effect of this improvement is that when installing electrical components, they are installed on the clamping plate through the mounting holes, and then the mounting plate is slid inward along the mounting rod and rests on the limit block, and then the fastening screw is screwed onto the mounting rod. With the cooperation of the limit block and the fastening screw, the mounting plate is limited, thereby facilitating the assembly and disassembly of the electrical components and subsequent maintenance operations of the electrical components.

[0016] In order to further improve the efficiency of heat dissipation inside the photovoltaic grid-connected cabinet:

[0017] As a further improvement of the above technical solution: a plurality of heat dissipation holes are evenly arranged on the mounting plate, and a plurality of heat dissipation fins are evenly arranged on the rear side wall of the mounting plate.

[0018] The beneficial effect of this improvement is that the heat generated by the electrical components is absorbed by the heat dissipation fins and then blown away by the fan, thereby further improving the efficiency of heat dissipation inside the photovoltaic grid-connected cabinet.

[0019] In order to better improve the heat dissipation efficiency of electrical components:

[0020] As a further improvement of the above technical solution: the heat dissipation fins are arranged in a cone shape.

[0021] The beneficial effect of this improvement is that by setting the heat dissipation fins to be conical, the heat dissipation area of ​​the heat dissipation fins can be increased, thereby better improving the heat dissipation efficiency of the electrical components.

[0022] In order to dissipate heat for the electrical components on both sides of the grid plate:

[0023] As a further improvement of the above technical solution: the air inlet is arranged below the mesh partition plate, and the heat dissipation port is arranged above the mesh partition plate.

[0024] The beneficial effect of this improvement is that when the temperature of the gas becomes higher, it flows toward the top of the cabinet. Setting the heat dissipation port at the top can facilitate the dissipation of hot air. At the same time, with the cooperation of the mesh partition plate with mesh holes and the fan, the electrical components on the upper and lower sides of the mesh plate can be cooled at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side view stereoscopic structural schematic diagram of the utility model;

[0026] Figure 2 It is a right side cross-sectional structural schematic diagram of the utility model;

[0027] Figure 3 It is a front view cross-sectional structural schematic diagram of the utility model;

[0028] Figure 4 It is a schematic diagram of the enlarged structure of point A in the utility model;

[0029] Figure 5 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0030] In the figure: 1. cabinet; 2. mesh partition; 3. air inlet; 4. heat dissipation vent; 5. dust screen; 6. installation frame; 7. groove; 8. spring; 9. limit rod; 10. limit hole; 11. lever; 12. slide slot; 13. fan; 14. ventilation plate; 15. mounting plate; 16. mounting hole; 17. clamping plate; 18. mounting rod; 19. limit block; 20. fastening screw; 21. heat dissipation hole; 22. heat dissipation fin. DETAILED DESCRIPTION

[0031] 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.

[0032] like Figure 1-5As shown, a photovoltaic grid-connected cabinet that is easy to assemble includes a cabinet body 1, a mesh partition plate 2 arranged in the middle of the inner cavity of the cabinet body 1, components symmetrically arranged on the upper and lower sides of the mesh partition plate 2 and used to install electrical components, an air inlet 3 arranged at the lower part of the cabinet body 1, and a heat dissipation port 4 arranged at the upper part of the cabinet body 1, wherein the interior of the air inlet 3 and the heat dissipation port 4 is detachably connected with a dustproof component, and the dustproof component includes a dustproof mesh plate 5 arranged on the outside of the air inlet 3 and the heat dissipation port 4, an installation frame 6 arranged at the inner end of the dustproof mesh plate 5, a plurality of grooves 7 opened in the cabinet body 1 and aligned with the four side walls of the installation frame 6, a spring 8 arranged in the groove 7, a limit rod 9 arranged on the side of the spring 8 close to the installation frame 6, and a limit rod 9 opened in the middle of the four side walls of the installation frame 6 and adapted to the limit rod 9 The limiting holes 10 are provided at the air inlet 3 and the heat dissipation port 4, which can not only prevent external dust and impurities from entering the cabinet 1, but also facilitate the installation and removal of the dustproof mesh plate 5, so as to facilitate the maintenance of the dustproof mesh plate 5 in the future, and prevent irrelevant personnel from accidentally removing the dustproof mesh plate 5 from the outside of the cabinet 1. A lever 11 is provided on the inner side of the limiting rod 9, and a slide groove 12 adapted to the lever 11 is provided on the inner side wall of the cabinet 1. When removing the dustproof mesh plate 5, the lever 11 is slid along the slide groove 12 to drive the limiting rod 9 to slide into the inside of the groove 7, and the spring 8 is squeezed to release the limiting rod 9 from limiting the mounting frame 6. A fan 13 is provided at the bottom of the cabinet 1, and a ventilation plate 14 is provided above the fan 13. When the electrical components in the photovoltaic grid-connected cabinet are dissipating heat, the fan 13 blows the gas entering the cabinet 1 along the air inlet 3 upward through the ventilation plate 14, so that it takes away the heat emitted by the electrical components and dissipates it along the heat dissipation port 4. The components for installing the electrical components include a mounting plate 15 arranged inside the cabinet 1, a card plate 17 symmetrically arranged on both sides of the mounting plate 15 and having a plurality of mounting holes 16, a mounting rod 18 arranged at the four corners of the mounting plate 15 and one end of which is fixedly connected to the cabinet 1, a limit block 19 arranged on the outer wall of the mounting rod 18 and located at the rear side of the mounting plate 15, and a fastening screw 20 arranged on the side of the mounting rod 18 away from the limit block 19 and used to fix the mounting plate 15. When installing the electrical components, the mounting holes are used to fix the mounting plate 15. 16 is installed on the card plate 17, and then the mounting plate 15 is slid inward along the mounting rod 18 and leaned against the limit block 19, and then the fastening screw 20 is screwed onto the mounting rod 18. With the cooperation of the limit block 19 and the fastening screw 20, the mounting plate 15 is limited, so that it is convenient to assemble and disassemble the electrical components and to perform subsequent electrical component maintenance operations. A plurality of heat dissipation holes 21 are evenly provided on the mounting plate 15, and a plurality of heat dissipation fins 22 are evenly provided on the rear side wall of the mounting plate 15. The heat generated by the electrical components is absorbed by the heat dissipation fins 22 and then blown by the fan 13, so that the heat dissipation efficiency inside the photovoltaic grid-connected cabinet can be further improved. The heat dissipation fins 22 are arranged in a cone shape. The heat dissipation fins 22 are arranged in a cone shape.The heat dissipation area of ​​the heat dissipation fins 22 can be increased, thereby better improving the heat dissipation efficiency of the electrical components. The air inlet 3 is arranged below the mesh partition plate 2, and the heat dissipation port 4 is arranged above the mesh partition plate 2. When the temperature of the gas increases, it flows to the top of the cabinet 1. The heat dissipation port 4 is arranged at the top, which can facilitate the dissipation of hot air. At the same time, with the cooperation of the mesh plate with mesh holes and the fan 13, the electrical components on the upper and lower sides of the mesh plate can be cooled at the same time.

[0033] The working principle and use process of the utility model are as follows: when in use, the electrical components are mounted on the card plate 17 through the mounting holes 16, and then the mounting plate 15 is slid inward along the mounting rod 18 and rests on the limit block 19, and then the fastening screw 20 is screwed onto the mounting rod 18. With the cooperation of the limit block 19 and the fastening screw 20, the mounting plate 15 is limited, so that the electrical components can be easily assembled and disassembled, and the subsequent electrical component maintenance operation is convenient. The heat generated by the electrical components is absorbed by the heat dissipation fins 22. The fan 13 blows the gas entering the cabinet 1 along the air inlet 3 upwards through the ventilation plate 14, taking away the heat absorbed by the heat dissipation fins 22 and dissipating it along the heat dissipation port 4, thereby realizing heat exchange between the air inside the cabinet 1 and the external gas. When replacing the dustproof screen 5, open the cabinet door, slide the lever 11 along the slide groove 12, drive the limit rod 9 to slide into the groove 7, and squeeze the spring 8 to release the limit rod 9 on the installation frame 6, and then remove the installation frame 6 and the dustproof screen 5 from the cabinet 1.

[0034] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A photovoltaic grid-connected cabinet that is easy to assemble, comprising a cabinet (1), a mesh partition (2) arranged in the middle of the inner cavity of the cabinet (1), components symmetrically arranged on the upper and lower sides of the mesh partition (2) and used to install electrical components, an air inlet (3) arranged at the lower part of the cabinet (1), and a heat dissipation port (4) arranged at the upper part of the cabinet (1), characterized in that: The air inlet (3) and the heat dissipation port (4) are detachably connected with a dustproof component, and the dustproof component comprises a dustproof screen (5) arranged on the outside of the air inlet (3) and the heat dissipation port (4), a mounting frame (6) arranged at the inner end of the dustproof screen (5), a plurality of grooves (7) arranged inside the cabinet (1) and aligned with four side walls of the mounting frame (6), a spring (8) arranged inside the groove (7), a limit rod (9) arranged on a side of the spring (8) close to the mounting frame (6), and a limit hole (10) arranged in the middle of the four side walls of the mounting frame (6) and adapted to the limit rod (9).

2. The photovoltaic grid-connected cabinet that is easy to assemble according to claim 1 is characterized in that: A lever (11) is arranged on the inner side of the limiting rod (9), and a sliding groove (12) adapted to the lever (11) is provided on the inner side wall of the cabinet (1).

3. The photovoltaic grid-connected cabinet that is easy to assemble according to claim 1 is characterized in that: A fan (13) is arranged at the bottom of the cabinet (1), and a ventilation plate (14) is arranged above the fan (13).

4. The photovoltaic grid-connected cabinet that is easy to assemble according to claim 1 is characterized in that: The assembly for mounting the electrical components comprises a mounting plate (15) arranged inside the cabinet (1), a clamping plate (17) symmetrically arranged on both sides of the mounting plate (15) and having a plurality of mounting holes (16), a mounting rod (18) arranged at four corners of the mounting plate (15) and having one end fixedly connected to the cabinet (1), a limit block (19) arranged on the outer wall of the mounting rod (18) and located at the rear side of the mounting plate (15), and a fastening screw (20) arranged on a side of the mounting rod (18) away from the limit block (19) and used for fixing the mounting plate (15).

5. The photovoltaic grid-connected cabinet that is easy to assemble according to claim 4 is characterized in that: The mounting plate (15) is evenly provided with a plurality of heat dissipation holes (21), and the rear side wall of the mounting plate (15) is evenly provided with a plurality of heat dissipation fins (22).

6. The photovoltaic grid-connected cabinet that is easy to assemble according to claim 5 is characterized in that: The heat dissipation fins (22) are arranged in a cone shape.

7. The photovoltaic grid-connected cabinet that is easy to assemble according to claim 1 is characterized in that: The air inlet (3) is arranged below the mesh partition plate (2), and the heat dissipation port (4) is arranged above the mesh partition plate (2).

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