Electric cabinet for photovoltaic power station

Abstract

The utility model relates to the technical field of electrical cabinets, and discloses an electrical cabinet for a photovoltaic power station, a cooling fan is arranged in an installation frame, a dustproof assembly is installed outside the installation frame, a press fit frame is installed outside the dustproof assembly, and the press fit frame is connected with the cooling fan. A plurality of linearly-distributed flow guide plates are rotationally mounted on the front side and the rear side of the interior of the pressing frame through rotating shafts, and cleaning parts are arranged on the inward sides of the flow guide plates and make sliding contact with the surface of the dustproof assembly. The left side and the right side of the electric cabinet shell are respectively provided with the heat dissipation fan which exhausts air outwards and the flow guide plate which can swing up and down, and the sweeping part is arranged above the inward side of the flow guide plate, so that dust attached to the surface of the filter screen can be swept down, dust accumulation is avoided, and the service life of the electric cabinet is prolonged. And the heat dissipation fans can directly blow away the cleaned dust, and the heat dissipation fans and the flow guide plates on the two sides alternately run back and forth, so that the cleanliness of the dustproof assembly is guaranteed, and the heat dissipation effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical cabinets, in particular to an electrical cabinet for a photovoltaic power station. Background Art

[0002] When carrying out photovoltaic electrical construction, it is necessary to assemble the required switchgear, measuring instruments, protective electrical and auxiliary equipment into the electrical cabinet according to the electrical wiring requirements for use. During long-term operation, a large amount of heat energy will be generated, and the temperature inside the electrical cabinet needs to be dissipated through the heat dissipation holes. Generally speaking, electrical cabinets are generally set outdoors, and there is a lot of dust outside, which makes it easy for external dust to enter the electrical cabinet through the heat dissipation holes. Therefore, dust nets are generally installed outside the heat dissipation holes to block dust. After long-term use, too much dust accumulates on the dust net, causing the dust net to be blocked by dust, which will affect the heat dissipation effect of the electrical cabinet. For this reason, we designed an electrical cabinet for photovoltaic power stations. Utility Model Content

[0003] In order to solve the technical problem that too much dust accumulates on the dustproof net, causing the dustproof net to be blocked by dust and affecting the heat dissipation effect of the electrical cabinet, the utility model provides an electrical cabinet for a photovoltaic power station.

[0004] The utility model is implemented by the following technical scheme: an electric cabinet for a photovoltaic power station, comprising an electric cabinet shell, air vents are respectively opened at the upper and lower ends of the left and right sides of the electric cabinet shell, a mounting frame is installed on the outside of the air vent by screws, and a cooling fan is arranged inside the mounting frame, a dustproof component is installed on the outside of the mounting frame, a pressing frame is installed on the outside of the dustproof component, a plurality of linearly distributed guide plates are rotatably installed on the front and rear sides of the pressing frame by a rotating shaft, and the guide plates are designed to deflect up and down with the rotating shaft as the axis, and a cleaning part is arranged on the inner side of the guide plate, and the cleaning part is in sliding contact with the surface of the dustproof component.

[0005] As a further improvement of the above scheme, the dustproof component includes a pressing plate and a filter net. The filter net is arranged in the pressing plate, and the pressing plate is fixed to the mounting frame by screws. The pressing plate is placed between the mounting frame and the pressing frame, and can be quickly installed and disassembled, thereby facilitating the installation and replacement of the filter net.

[0006] As a further improvement of the above scheme, the guide plate is arranged at an angle in the pressing frame, and the inward end of the guide plate is higher than the outward end. The cross-section of the cleaning portion arranged on the inward surface of the guide plate is an arc-shaped structure, and the center of the arc structure is colinear with the axis of the rotating shaft. The bottom end of the upper guide plate is on the lower side of the top of the lower guide plate, so that external rainwater cannot enter the interior of the pressing frame, which has a good waterproof effect.

[0007] As a further improvement of the above scheme, the rear end of the rotating shaft passes through the pressing frame and is placed on the rear side thereof, and a pulley is provided on the rotating shaft. The multiple rotating shafts are connected by pulleys and toothed belt transmissions, and the deflection angle of the guide plate is 25-60 degrees. When the guide plate rotates, the cleaning portion arranged on the upper inner side can contact the surface of the filter screen, so that the dust attached to the surface of the filter screen can be swept off, thereby avoiding dust accumulation.

[0008] As a further improvement of the above scheme, a mounting bracket is provided on the rear side of the pressing frame, an electric push rod is installed inside the mounting cavity of the mounting bracket, a connecting rod is provided on the push rod of the electric push rod, and the connecting rod is connected to the toothed belt at one end away from the electric push rod. The extension and retraction of the push rod of the electric push rod can make the toothed belt move up and down, thereby making multiple pulleys deflect to a certain extent, and the rotating shaft and the guide plate will rotate accordingly, so that the dustproof component can be cleaned.

[0009] As a further improvement of the above scheme, the two cooling fans on the left and right sides are respectively connected to two CST89C52 single-chip microcomputers, and a cooling fan driving circuit and a delay circuit are provided on the CST89C52 single chip. The cooling fan is connected in series with the corresponding electric push rod circuit. Both cooling fans exhaust air outwards, and when one cooling fan is rotating, the other cooling fan is in a stopped state. The external airflow can enter through the cooling fan and be discharged through the other cooling fan. After a period of time, the cooling fan rotates and the other cooling fan stops rotating. During the rotation of the cooling fan, the electric push rod on the corresponding cooling fan performs a telescopic reciprocating motion, thereby causing the guide plate to swing up and down.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model provides a cooling fan for exhausting air outward and a guide plate that can swing up and down on the left and right sides of the electric cabinet housing, and a cleaning part is provided on the upper side of the guide plate facing inward, which can clean the dust attached to the surface of the filter screen to avoid dust accumulation, and the cooling fan can directly blow away the cleaned dust. The cooling fans and guide plates on both sides run back and forth alternately, which ensures the cleanliness of the dustproof component, prevents it from being blocked, and ensures the heat dissipation effect;

[0012] 2. By arranging multiple guide plates in the pressed frame, and the outward side of the guide plate is lower than the inward side, the inner side is higher than the outer side even when swinging, making it difficult for rainwater inside to enter, thereby improving the waterproof effect and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic diagram of the overall structure of an electric cabinet for a photovoltaic power station provided by the utility model;

[0014] Figure 2 for Figure 1 The left and right isometric drawings;

[0015] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0016] Figure 4 for Figure 2 Schematic diagram of the result without installing the dustproof components and the pressing frame;

[0017] Figure 5 for Figure 1 Front view of .

[0018] Description of main symbols:

[0019] 1. Electric cabinet housing; 2. Mounting frame; 3. Dustproof assembly; 4. Pressing frame; 5. Guide plate; 51. Rotating shaft; 52. Pulley; 53. Toothed belt; 54. Cleaning part; 6. Mounting frame; 61. Mounting cavity; 7. Electric push rod; 71. Connecting rod. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0021] Example:

[0022] Please combine Figure 1-Figure 5 An electric cabinet for a photovoltaic power station of the present embodiment includes an electric cabinet shell 1, and air vents are respectively opened at the upper and lower ends of the left and right sides of the electric cabinet shell 1. A mounting frame 2 is installed on the outside of the air vent by screws, and a cooling fan is arranged inside the mounting frame 2. A dustproof component 3 is installed on the outside of the mounting frame 2, and a pressing frame 4 is installed on the outside of the dustproof component 3. A plurality of linearly distributed guide plates 5 are rotatably installed on the front and rear sides of the pressing frame 4 through a rotating shaft 51, and the guide plates 5 are designed to deflect up and down with the rotating shaft 51 as the axis, and a cleaning portion 54 is arranged on the inner side of the guide plate 5, and the cleaning portion 54 is in sliding contact with the surface of the dustproof component 3.

[0023] The dustproof component 3 includes a pressing plate and a filter screen. The filter screen is arranged in the pressing plate, and the pressing plate is fixed to the mounting frame 2 by screws. The pressing plate is placed between the mounting frame 2 and the pressing frame 4, and can be quickly installed and disassembled, thereby facilitating the installation and replacement of the filter screen.

[0024] The guide plate 5 is tiltedly arranged in the pressing frame 4, and the inward end of the guide plate 5 is higher than the outward end. The cleaning portion 54 arranged on the inward surface of the guide plate 5 has an arc-shaped cross-section, and the center of the arc structure is colinear with the axis of the rotating shaft 51. The bottom end of the upper guide plate 5 is on the lower side of the top of the lower guide plate 5, so that external rainwater cannot enter the interior of the pressing frame 4, which has a good waterproof effect.

[0025] The rear end of the rotating shaft 51 passes through the pressing frame 4 and is placed on the rear side thereof, and a pulley 52 is provided on the rotating shaft 51. The multiple rotating shafts 51 are connected through the pulley 52 and the toothed belt 53, and the deflection angle of the guide plate 5 is 25-60 degrees. When the guide plate 5 rotates, the cleaning portion 54 provided on the upper inner side thereof can contact the surface of the filter screen, so that the dust attached to the surface of the filter screen can be swept off, thereby avoiding dust accumulation.

[0026] A mounting bracket 6 is provided on the rear side of the pressing frame 4, and an electric push rod 7 is installed inside the mounting cavity 61 of the mounting bracket 6. A connecting rod 71 is provided on the push rod of the electric push rod 7, and the connecting rod 71 is connected to the toothed belt 53 at one end away from the electric push rod 7. The extension and retraction of the push rod of the electric push rod 7 can make the toothed belt 53 move up and down, and then make the multiple pulleys 52 deflect to a certain extent, and the rotating shaft 51 and the guide plate 5 will rotate accordingly, so that the dustproof component 3 can be cleaned.

[0027] The two cooling fans on the left and right sides are respectively connected to two CST89C52 single-chip microcomputers, and a cooling fan driving circuit and a delay circuit are provided on the CST89C52 single-chip. The cooling fans are connected in series with the corresponding electric push rod 7 circuits. Both cooling fans exhaust air outwards, and when one cooling fan is rotating, the other cooling fan is in a stopped state. The external airflow can enter through the cooling fan and be discharged through the other cooling fan. After a period of time, the cooling fan rotates and the other cooling fan stops rotating. During the rotation of the cooling fan, the electric push rod on the corresponding cooling fan performs a telescopic reciprocating motion, thereby causing the guide plate 5 to swing up and down.

[0028] The implementation principle of an electric cabinet for a photovoltaic power station in the embodiment of the present application is as follows: in actual time, when one of the cooling fans is running and rotating, the cooling fan can discharge the heat generated inside the cabinet housing 1 to the outside, while the other cooling fan is in a stopped state, and the external air flow can enter through this vent, and the electric push rod 7 on the side of the cooling fan will also perform a telescopic reciprocating motion. Since the push rod of the electric push rod 7 is connected to the toothed belt 53 through the connecting rod 71, the multiple rotating shafts 51 can be driven back and forth, so that the guide plate 5 The deflection plate 5 deflects back and forth within an angle of 25-60 degrees, and when the guide plate 5 rotates, the cleaning portion 54 arranged on the upper side of the inner side can contact the surface of the filter screen, so that the dust attached to the surface of the filter screen can be cleaned off, avoiding the accumulation of dust. Since the heat dissipation fan is exhausted outward, the cleaned dust can be blown away directly. After a period of time, the heat dissipation fan and the guide plate 5 stop running, and the heat dissipation fan and the guide plate 5 at another place are started, so that the dust-proof components 3 on the left and right sides can be continuously cleaned;

[0029] By respectively arranging a cooling fan for exhausting air outward and a guide plate 5 that can swing up and down on the left and right sides of the electric cabinet housing 1, a cleaning portion is arranged above the inward side of the guide plate 5, which can clean the dust attached to the surface of the filter screen to avoid dust accumulation, and the cooling fan can directly blow away the cleaned dust. The cooling fans and guide plates 5 on both sides run back and forth alternately, ensuring the cleanliness of the dustproof component 3, preventing it from being blocked, and ensuring the heat dissipation effect;

[0030] By arranging a plurality of guide plates 5 in the pressing frame 4, and with the outward side of the guide plate 5 lower than the inward side, the inner side is higher than the outer side even when swinging, so that rainwater inside is difficult to enter, thereby improving the waterproof effect and ensuring safety.

[0031] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An electric cabinet for a photovoltaic power station, comprising an electric cabinet housing (1), characterized in that: The left and right sides and the upper and lower ends of the electrical cabinet housing (1) are respectively provided with air vents, a mounting frame (2) is mounted on the outside of the air vents by screws, and a cooling fan is arranged inside the mounting frame (2), a dustproof component (3) is mounted on the outside of the mounting frame (2), a pressing frame (4) is mounted on the outside of the dustproof component (3), a plurality of linearly distributed guide plates (5) are rotatably mounted on the front and rear sides of the pressing frame (4) by a rotating shaft (51), and the guide plates (5) are designed to deflect up and down with the rotating shaft (51) as the axis, and a cleaning portion (54) is arranged on the inner side of the guide plate (5), and the cleaning portion (54) is in sliding contact with the surface of the dustproof component (3).

2. The photovoltaic power station power cabinet according to claim 1, characterized in that: The dustproof component (3) comprises a pressing plate and a filter screen, wherein the filter screen is arranged in the pressing plate, and the pressing plate is fixed to the mounting frame (2) by means of screws.

3. The photovoltaic power station power cabinet according to claim 1, characterized in that: The guide plate (5) is arranged obliquely in the pressing frame (4), and the inward end of the guide plate (5) is higher than the outward end. The cleaning portion (54) arranged on the inward surface of the guide plate (5) has an arc-shaped structure in cross section, and the center of the arc-shaped structure is colinear with the axis of the rotating shaft (51).

4. The photovoltaic power station power cabinet according to claim 1, characterized in that: The rear end of the rotating shaft (51) passes through the pressing frame (4) and is placed at the rear side thereof, and a pulley (52) is provided on the rotating shaft (51). The plurality of rotating shafts (51) are connected to each other through the pulley (52) and the toothed belt (53), and the deflection angle of the guide plate is 25-60 degrees.

5. The photovoltaic power station power cabinet according to claim 4, characterized in that: A mounting frame (6) is arranged on the rear side of the pressing frame (4), an electric push rod (7) is installed inside the mounting cavity (61) of the mounting frame (6), a connecting rod (71) is arranged on the push rod of the electric push rod (7), and the end of the connecting rod (71) away from the electric push rod (7) is connected to the toothed belt (53).

6. The photovoltaic power station power cabinet according to claim 1, characterized in that: The two cooling fans on the left and right sides are respectively connected to two CST89C52 single chip microcomputers, and the CST89C52 single chip is provided with a cooling fan driving circuit and a delay circuit. The cooling fan is connected in series with the corresponding electric push rod (7) circuit.

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