Photovoltaic power distribution cabinet

Abstract

The invention discloses a photovoltaic power distribution cabinet, and belongs to the field of power distribution cabinets. A photovoltaic power distribution cabinet comprises a cabinet body and further comprises a water collecting unit arranged at the top of the cabinet body and used for collecting rainwater; the exhaust unit is arranged on the side wall of the cabinet body and used for conveying air in the cabinet body to the outside, an air inlet unit is arranged on the side wall of the cabinet body, a cleaning unit is arranged in the air inlet unit, and the cleaning unit can clean the air inlet unit through the exhaust unit; the control unit is arranged on the inner wall of the cabinet body and is electrically connected with the exhaust unit; a drainage mechanism is arranged among the air inlet unit and the air exhaust unit, and the water collecting unit is communicated with the drainage mechanism through a pipeline; the problems that a photovoltaic power distribution cabinet is common in heat dissipation effect, low in heat dissipation efficiency and serious in energy waste can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a photovoltaic power distribution cabinet. Background Art

[0002] Photovoltaic distribution cabinet is a key device used for power distribution, protection and control in photovoltaic power generation system, and plays a vital role in photovoltaic power generation system. It is not only responsible for distributing the electric energy generated by solar photovoltaic power generation system to different loads, but also has protection and control functions to ensure the safe and stable operation of the system. It also provides lightning protection and overcurrent protection, monitors the single string current, voltage and lightning arrester status of photovoltaic array, etc., to ensure that the equipment can work stably for a long time.

[0003] Photovoltaic distribution cabinets are usually installed in the external environment. During operation, a large amount of heat will be generated. The existing distribution cabinets generally use cooling fans to dissipate heat, and the heat dissipation effect is average. In addition, during the heat dissipation process, it is easy to cause dust panels to be blocked, affecting their heat dissipation efficiency. At the same time, it is difficult to adjust the heat dissipation efficiency according to the temperature inside the distribution cabinet, and it is difficult to ensure the normal operation of the circuit components inside the distribution cabinet, and energy will be wasted. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the heat dissipation effect of photovoltaic distribution cabinets is general, the heat dissipation efficiency is low, and the energy waste is serious, and a photovoltaic distribution cabinet is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A photovoltaic power distribution cabinet comprises a cabinet body, and further comprises: a water collecting unit arranged on the top of the cabinet body, for collecting rainwater; an exhaust unit arranged on the side wall of the cabinet body, for conveying the air in the cabinet body to the outside, wherein an air inlet unit is arranged on the side wall of the cabinet body, a cleaning unit is arranged in the air inlet unit, and the cleaning unit can clean the air inlet unit through the exhaust unit; a control unit is arranged on the inner wall of the cabinet body, and the control unit is electrically connected to the exhaust unit; a drainage mechanism is arranged between the water collecting unit, the air inlet unit and the exhaust unit, and the water collecting unit and the drainage mechanism are connected through a pipeline.

[0007] In order to improve the utilization rate of rainwater, preferably, the water collection unit includes a cover plate fixedly connected to the top of the cabinet, and a water storage box is fixedly connected to the side of the cabinet close to the cover plate, wherein the top of the cover plate is inclined, the bottom end of the cover plate is located in the water storage box, and an overflow pipe is connected to the top of the outer wall of the water storage box.

[0008] In order to facilitate the discharge of heat inside the cabinet, the exhaust unit further includes exhaust outlets symmetrically opened on the side wall of the cabinet, the exhaust outlet is fixedly connected to a fixing plate inside, the fixing plate is fixedly connected to a driving motor on the side close to the inside of the cabinet, the output of the driving motor is fixedly connected to an exhaust fan, and an installation groove is opened on the side of the outer wall of the cabinet close to the exhaust outlet, and multiple groups of blades are rotatably connected inside the installation groove, and a linkage rod is rotatably connected to the multiple groups of blades, wherein the exhaust fan matches the size of the exhaust outlet, the multiple groups of blades are fitted together, and the blades extend to the outside at one end away from the cabinet, and a driving mechanism is provided on the side of the cabinet side wall close to the blades.

[0009] In order to facilitate driving the air intake unit and the cleaning unit when dissipating heat inside the cabinet, further, the driving mechanism includes a transverse groove opened on the side wall of the cabinet close to the blade, a push rod is slidably connected inside the transverse groove, a driving cylinder is fixedly connected between the push rod and the transverse groove, a groove is opened on the side of the cabinet close to the bottom of the blade, a pressing piece is fixedly connected inside the groove, the pressing piece includes a fixed part and a telescopic part, a pressing cavity is formed between the fixed part and the telescopic part, a spring is fixedly connected between the fixed part and the telescopic part, wherein the push rod and the telescopic part are in contact with the blade.

[0010] In order to facilitate the entry of cold air from the outside into the cabinet and prevent dust from entering with the wind, the air inlet unit further includes an air inlet symmetrically opened on the side wall of the cabinet, and the interior of the air inlet is fixedly connected to a first mounting ring, and a plurality of groups of vibrating cylinders are fixedly connected to the side of the first mounting ring away from the cabinet, and a dustproof plate is fixedly connected to the end of the vibrating cylinder away from the first mounting ring, wherein the dustproof plate is in contact with the inner wall of the air inlet, and the vibrating cylinder is connected to the pressing chamber through a pipe.

[0011] In order to avoid clogging of the dust shield, the cleaning unit further includes a second mounting ring fixedly connected to the inner wall of the air inlet, the second mounting ring is fixedly connected to a cleaning cylinder on a side close to the first mounting ring, the cleaning cylinder is fixedly connected to a connecting piece on one end away from the second mounting ring, a mounting disk is fixedly connected between multiple groups of the connecting pieces, and a plurality of groups of ejector pins are fixedly connected to the mounting disk, wherein the cleaning cylinder is connected to the driving cylinder by a pipe, and the ejector pins match the holes on the dust shield.

[0012] In order to facilitate the use of rainwater to improve the heat dissipation effect of the cabinet, the drainage mechanism further includes a heat exchange ring fixedly connected to the air inlet, a connecting pipe is connected between the heat exchange ring and the water storage box, a first pneumatic valve is arranged on the connecting pipe, a shunt pipe is connected to the bottom of the heat exchange ring, a nozzle is fixedly connected to the end of the shunt pipe away from the heat exchange ring, and a second pneumatic valve is arranged on the end of the shunt pipe close to the heat exchange ring, wherein the heat exchange ring is in contact with the air inlet, and the nozzle is located above the blade.

[0013] In order to facilitate the adjustment of the heat dissipation efficiency according to the temperature inside the cabinet, the control unit further includes a bimetallic strip fixedly connected to the inner wall of the cabinet, an arc-shaped cylinder is fixedly connected to one side of the inner wall of the cabinet close to the bimetallic strip, and a control switch is fixedly connected to one end of the arc-shaped cylinder close to the bimetallic strip, wherein the control switch is electrically connected to the drive motor, and the arc-shaped cylinder is connected to the first pneumatic valve through a pipeline.

[0014] In order to ensure the cooling effect of rainwater on the air and facilitate cleaning of dust on the surface of the blades, it further includes a limit plate symmetrically fixedly connected to the inner wall of the heat exchange ring, the interior of the heat exchange ring is symmetrically slidably connected with a floating plate, the side of the heat exchange ring close to the connecting pipe is symmetrically fixedly connected with a connecting plate, and the side of the connecting plates away from each other is fixedly connected with an extrusion cylinder, wherein a through hole is opened on the floating plate, the floating plate is fitted against the inner wall of the heat exchange ring, and the extrusion cylinder is connected to the second pneumatic valve through a pipeline.

[0015] Compared with the prior art, the present invention provides a photovoltaic power distribution cabinet, which has the following beneficial effects:

[0016] 1. The photovoltaic distribution cabinet can collect rainwater through the water collection unit when it rains, so as to improve the heat dissipation effect of the circuit components in the cabinet when the temperature inside the cabinet is high, thereby achieving the purpose of reducing energy loss and being more energy-saving and environmentally friendly.

[0017] 2. The photovoltaic distribution cabinet can discharge the hot air in the cabinet through the exhaust unit, and allow the cold air from the outside to enter the cabinet through the air inlet unit, so as to realize the air circulation in the cabinet. When the outside air enters, the air inlet unit can block the dust to prevent the dust from affecting the circuit components inside the cabinet. At the same time, when exhausting the air, the cleaning unit is driven to clean the dustproof plate to prevent the dustproof plate from being blocked, and the dustproof plate is driven to vibrate to accelerate the shedding of dust on the dustproof plate.

[0018] 3. The photovoltaic distribution cabinet can monitor the temperature inside the cabinet through the control unit, and adjust the drainage efficiency of the drainage mechanism according to the temperature change, thereby improving the heat dissipation effect of the circuit components in the cabinet, reducing the waste of water resources, and can also clean the dust on the surface of the blades through the drainage mechanism.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can overcome the problems of general heat dissipation effect, low heat dissipation efficiency and serious energy waste of photovoltaic distribution cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a photovoltaic power distribution cabinet proposed by the present invention Figure 1 ;

[0021] Figure 2 A schematic diagram of the structure of a photovoltaic power distribution cabinet proposed by the present invention Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the main cross-sectional structure of a photovoltaic power distribution cabinet proposed by the present invention;

[0023] Figure 4 A schematic diagram of the cross-sectional structure of a cabinet side wall in a photovoltaic power distribution cabinet proposed by the present invention;

[0024] Figure 5 This is a schematic cross-sectional structure diagram of a heat exchange ring in a photovoltaic power distribution cabinet proposed by the present invention;

[0025] Figure 6 A photovoltaic power distribution cabinet proposed by the present invention Figure 3 The structural diagram of part A in the figure;

[0026] Figure 7 A photovoltaic power distribution cabinet proposed by the present invention Figure 3 The structural diagram of part B;

[0027] Figure 8 A photovoltaic power distribution cabinet proposed by the present invention Figure 4 Schematic diagram of the structure of part C.

[0028] In the figure: 1, cabinet; 2, cover plate; 3, water storage box; 4, overflow pipe; 5, bimetallic strip; 6, arc cylinder; 7, control switch; 8, exhaust port; 9, fixing plate; 10, driving motor; 11, exhaust fan; 12, mounting slot; 13, blade; 14, linkage rod; 15, horizontal slot; 16, push rod; 17, driving cylinder; 18, groove; 19, pressing piece; 20, spring; 21, air inlet; 22, dustproof plate; 23. Heat exchange ring; 24. First mounting ring; 25. Vibrating cylinder; 26. Second mounting ring; 27. Cleaning cylinder; 28. Connecting piece; 29. ​​Mounting plate; 30. Ejector pin; 31. Connecting pipe; 32. First pneumatic valve; 33. Diverter pipe; 34. Nozzle; 35. Floating plate; 36. Limiting plate; 37. Connecting plate; 38. Extrusion cylinder; 39. Second pneumatic valve; 40. Cabinet door; 41. Mounting column; 42. Mounting frame. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Example:

[0032] Reference Figure 1-Figure 8 A photovoltaic power distribution cabinet comprises a cabinet body 1, a cabinet door 40 is rotatably connected to the cabinet body 1, a mounting column 41 is fixedly connected to the inside of the cabinet body 1, and a mounting frame 42 is fixedly connected to the mounting column 41, wherein the cabinet door 40 is in contact with the cabinet body 1, and a plurality of groups of threaded holes are provided on the mounting column 41 for fixing the mounting frame 42, and the mounting frame 42 is used to install circuit components, and also comprises: a water collecting unit arranged on the top of the cabinet body 1 for collecting rainwater; an exhaust unit arranged on the side wall of the cabinet body 1 for conveying the air in the cabinet body 1 to the outside, wherein an air inlet unit is arranged on the side wall of the cabinet body 1, and a cleaning unit is arranged in the air inlet unit, and the cleaning unit can clean the air inlet unit through the exhaust unit; a control unit is arranged on the inner wall of the cabinet body 1, and the control unit is electrically connected to the exhaust unit; a drainage mechanism is provided between the water collecting unit, the air inlet unit and the exhaust unit, and the water collecting unit and the drainage mechanism are connected through a pipeline.

[0033] Reference Figure 1-Figure 2 The water collection unit includes a cover plate 2 fixedly connected to the top of the cabinet 1, and a water storage box 3 is fixedly connected to one side of the cabinet 1 close to the cover plate 2, wherein the top of the cover plate 2 is inclined, the bottom end of the cover plate 2 is located in the water storage box 3, and an overflow pipe 4 is connected to the top of the outer wall of the water storage box 3.

[0034] When it rains, rainwater falling on the cover plate 2 will fall into the water storage box 3. When a certain amount of rainwater is collected in the water storage box 3, the excess rainwater can be discharged through the overflow pipe 4. This can make full use of the rainwater to reduce energy loss, and can also prevent rainwater from flowing along the cover plate 2 into the cabinet 1, preventing rainwater from affecting the operation of circuit components in the cabinet 1.

[0035] Reference Figure 3 and Figure 6 The control unit includes a bimetallic strip 5 fixedly connected to the inner wall of the cabinet 1, an arc cylinder 6 is fixedly connected to one side of the inner wall of the cabinet 1 close to the bimetallic strip 5, and a control switch 7 is fixedly connected to one end of the arc cylinder 6 close to the bimetallic strip 5, wherein the control switch 7 is electrically connected to the drive motor 10, and the arc cylinder 6 is connected to the first pneumatic valve 32 through a pipeline.

[0036] The specific structure of the bimetallic strip 5 can refer to the technical solutions in the prior art. Those skilled in the art will know that it will not be elaborated here. When the temperature in the cabinet 1 reaches the threshold, the bimetallic strip 5 will bend, and the higher the temperature, the greater the degree of bending of the bimetallic strip 5, until the bimetallic strip 5 contacts the control switch 7. At this time, the drive motor 10 is started. If the temperature in the cabinet 1 continues to rise, the bimetallic strip 5 presses the arc cylinder 6 to pass the compressed gas into the first pneumatic valve 32, and the air is cooled by rainwater to improve the heat dissipation effect of the circuit components inside the cabinet 1.

[0037] Reference Figure 3 , Figure 4 and Figure 8 The exhaust unit includes an exhaust port 8 symmetrically opened on the side wall of the cabinet 1, a fixing plate 9 is fixedly connected inside the exhaust port 8, a driving motor 10 is fixedly connected to the side of the fixing plate 9 close to the inside of the cabinet 1, an exhaust fan 11 is fixedly connected to the output of the driving motor 10, a mounting groove 12 is opened on the side of the outer wall of the cabinet 1 close to the exhaust port 8, a plurality of groups of blades 13 are rotatably connected inside the mounting groove 12, a linkage rod 14 is rotatably connected to the plurality of groups of blades 13, wherein the exhaust fan 11 matches the size of the exhaust port 8, the plurality of groups of blades 13 are fitted together, and the blades 13 extend to the outside at one end away from the cabinet 1, and a driving mechanism is provided on the side of the side wall of the cabinet 1 close to the blades 13.

[0038] After the driving motor 10 is turned on, it drives the exhaust fan 11 to rotate and exhaust the air in the cabinet 1. During the exhaust, the wind drives the blades 13 to rotate. Under the action of the linkage rod 14, the blades 13 rotate synchronously. At this time, the air inside the cabinet 1 is discharged through the blades 13. It should be explained that when the driving motor 10 is not working, the blades 13 fit with the adjacent blades 13 under the action of their own gravity. At this time, the dust from the outside will not enter the cabinet 1 through the exhaust port 8. When working, although the blades 13 are in the open state, under the action of wind, the dust will not enter the cabinet 1 through the exhaust port 8.

[0039] Reference Figure 3 and Figure 7 The air inlet unit includes an air inlet 21 symmetrically opened on the side wall of the cabinet 1, a first mounting ring 24 is fixedly connected to the inside of the air inlet 21, a side of the first mounting ring 24 away from the cabinet 1 is fixedly connected to multiple groups of vibrating cylinders 25, and one end of the vibrating cylinder 25 away from the first mounting ring 24 is fixedly connected to a dustproof plate 22, wherein the dustproof plate 22 fits the inner wall of the air inlet 21, and the vibrating cylinder 25 is connected to the pressing chamber through a pipeline, and the cleaning unit includes a second mounting ring 26 fixedly connected to the inner wall of the air inlet 21, a side of the second mounting ring 26 close to the first mounting ring 24 is fixedly connected to a cleaning cylinder 27, and one end of the cleaning cylinder 27 away from the second mounting ring 26 is fixedly connected to a connecting piece 28, and multiple groups of connecting pieces 28 are fixedly connected There is a mounting plate 29, on which a plurality of groups of ejector pins 30 are fixedly connected, wherein the cleaning cylinder 27 is connected to the driving cylinder 17 through a pipeline, and the ejector pins 30 match the holes on the dustproof plate 22, and the driving mechanism comprises a transverse groove 15 provided on the side wall of the cabinet 1 close to the blade 13, and a push rod 16 is slidably connected inside the transverse groove 15, and a driving cylinder 17 is fixedly connected between the push rod 16 and the transverse groove 15, and a groove 18 is provided on one side of the cabinet 1 close to the bottom of the blade 13, and a pressing piece 19 is fixedly connected inside the groove 18, and the pressing piece 19 comprises a fixed portion and a telescopic portion, and a pressing cavity is formed between the fixed portion and the telescopic portion, and a spring 20 is fixedly connected between the fixed portion and the telescopic portion, wherein the push rod 16 and the telescopic portion are in contact with the blade 13.

[0040] After the air inside the cabinet 1 is exhausted, the cabinet 1 is in a negative pressure state, and the outside air enters the cabinet 1 through the air inlet 21, so that the circuit components in the cabinet 1 are cooled by the air, wherein the dustproof plate 22 can intercept the dust in the air, and when the blade 13 rotates, the compression push rod 16 moves into the transverse groove 15, compresses the drive cylinder 17, and passes the gas in the drive cylinder 17 into the cleaning cylinder 27, driving the cleaning cylinder 27 to extend outward, driving the mounting plate 29 and the ejector pin 30 to move toward the side of the dustproof plate 22, and when the ejector pin 30 moves into the dustproof plate 22, the ejector pin 30 is protruded under the action of the negative pressure. However, it is subjected to a stabilizing force in the opposite direction, and drives the ejector pin 30 to move to the initial position, drives the push rod 16 to move to the initial position, and repeats the above process, which can drive the blade 13 to rotate intermittently, and drive the ejector pin 30 to move intermittently toward the side of the dustproof plate 22. During this process, the ejector pin 30 can clean the dustproof plate 22 to prevent the dustproof plate 22 from being blocked; and during this process, the blade 13 can also intermittently compress the pressing part 19, and pass the gas in the compression chamber into the vibrating cylinder 25, thereby driving the dustproof plate 22 to vibrate, further improving the cleaning effect of the dust on the dustproof plate 22, and ensuring the stability of the air circulation in the cabinet 1.

[0041] Reference Figure 1 , Figure 3 and Figure 4 The drainage mechanism includes a heat exchange ring 23 fixedly connected to the air inlet 21, a connecting pipe 31 is connected between the heat exchange ring 23 and the water storage box 3, a first pneumatic valve 32 is arranged on the connecting pipe 31, a shunt pipe 33 is connected to the bottom of the heat exchange ring 23, a nozzle 34 is fixedly connected to the end of the shunt pipe 33 away from the heat exchange ring 23, and a second pneumatic valve 39 is arranged on the end of the shunt pipe 33 close to the heat exchange ring 23, wherein the heat exchange ring 23 fits the air inlet 21, and the nozzle 34 is located above the blade 13.

[0042] When the temperature in the cabinet 1 reaches a certain value, the first pneumatic valve 32 is in an open state, and the rainwater in the water storage box 3 enters the heat exchange ring 23 through the connecting pipe 31 to cool the air entering the cabinet 1 to improve the heat dissipation effect of the internal circuit components of the cabinet 1. The cooled rainwater is sprayed onto the blades 13 through the shunt pipe 33 and the nozzle 34. On the one hand, it can clean the dust on the surface of the blades 13, and on the other hand, it can cool the exhausted hot air to reduce the temperature of the air around the cabinet 1.

[0043] Reference Figure 1 , Figure 2 and Figure 5, and also includes a limit plate 36 symmetrically fixedly connected to the inner wall of the heat exchange ring 23, a floating plate 35 is symmetrically slidably connected to the inside of the heat exchange ring 23, a connecting plate 37 is symmetrically fixedly connected to the side of the heat exchange ring 23 close to the connecting pipe 31, and an extrusion cylinder 38 is fixedly connected to the side of the connecting plate 37 away from each other, wherein a through hole is opened on the floating plate 35, the floating plate 35 is in contact with the inner wall of the heat exchange ring 23, and the extrusion cylinder 38 is connected to the second pneumatic valve 39 through a pipeline.

[0044] When the air is cooled by rainwater, when the rainwater just enters the heat exchange ring 23, the rainwater will not be directly discharged through the shunt pipe 33, but will be temporarily stored in the heat exchange ring 23 to ensure the cooling effect of the rainwater on the air and reduce the waste of rainwater. As the amount of rainwater in the heat exchange ring 23 increases, the floating plate 35 will be driven to gradually move upward until the floating plate 35 contacts the extrusion cylinder 38. When the extrusion cylinder 38 contracts to a threshold value, the second pneumatic valve 39 will be opened to allow the rainwater in the heat exchange ring 23 to be discharged through the shunt pipe 33, thereby reducing the waste of water resources.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic power distribution cabinet, comprising a cabinet body (1), characterized in that: Also includes: A water collection unit arranged on the top of the cabinet (1) and used for collecting rainwater; An exhaust unit arranged on the side wall of the cabinet (1) is used to transport the air in the cabinet (1) to the outside. Wherein, an air inlet unit is arranged on the side wall of the cabinet (1), a cleaning unit is arranged inside the air inlet unit, and the cleaning unit can clean the air inlet unit through the exhaust unit; A control unit is arranged on the inner wall of the cabinet (1), and the control unit is electrically connected to the exhaust unit; A drainage mechanism is arranged between the water collecting unit, the air inlet unit and the air exhaust unit, and the water collecting unit is connected with the drainage mechanism through a pipeline.

2. A photovoltaic power distribution cabinet according to claim 1, characterized in that: The water collection unit comprises a cover plate (2) fixedly connected to the top of the cabinet (1); a water storage box (3) is fixedly connected to one side of the cabinet (1) close to the cover plate (2); the top of the cover plate (2) is inclined; the bottom end of the cover plate (2) is located in the water storage box (3); and an overflow pipe (4) is connected to the upper side of the outer wall of the water storage box (3).

3. A photovoltaic power distribution cabinet according to claim 2, characterized in that: The exhaust unit comprises an exhaust port (8) symmetrically arranged on a side wall of a cabinet (1); a fixing plate (9) is fixedly connected to the inside of the exhaust port (8); a driving motor (10) is fixedly connected to the side of the fixing plate (9) close to the inside of the cabinet (1); an exhaust fan (11) is fixedly connected to the output of the driving motor (10); a mounting groove (12) is arranged on the side of the outer wall of the cabinet (1) close to the exhaust port (8); a plurality of groups of blades (13) are rotatably connected to the inside of the mounting groove (12); and a linkage rod (14) is rotatably connected to the plurality of groups of blades (13). The exhaust fan (11) matches the size of the exhaust port (8), the plurality of groups of blades (13) fit together, and one end of the blades (13) away from the cabinet (1) extends to the outside, and a driving mechanism is provided on a side of the cabinet (1) side wall close to the blades (13).

4. A photovoltaic power distribution cabinet according to claim 3, characterized in that: The driving mechanism comprises a transverse groove (15) provided on the side wall of the cabinet (1) close to the blade (13); a push rod (16) is slidably connected inside the transverse groove (15); a driving cylinder (17) is fixedly connected between the push rod (16) and the transverse groove (15); a groove (18) is provided on the side of the cabinet (1) close to the bottom of the blade (13); a pressing member (19) is fixedly connected inside the groove (18); the pressing member (19) comprises a fixed portion and a telescopic portion; a pressing cavity is formed between the fixed portion and the telescopic portion; a spring (20) is fixedly connected between the fixed portion and the telescopic portion; wherein the push rod (16) and the telescopic portion are in contact with the blade (13).

5. A photovoltaic power distribution cabinet according to claim 4, characterized in that: The air inlet unit comprises an air inlet (21) symmetrically opened on a side wall of the cabinet (1); a first mounting ring (24) is fixedly connected to the interior of the air inlet (21); a side of the first mounting ring (24) away from the cabinet (1) is fixedly connected to a plurality of groups of vibrating cylinders (25); an end of the vibrating cylinder (25) away from the first mounting ring (24) is fixedly connected to a dustproof plate (22); The dustproof plate (22) is in contact with the inner wall of the air inlet (21), and the vibration cylinder (25) is connected to the pressing chamber via a pipeline.

6. A photovoltaic power distribution cabinet according to claim 5, characterized in that: The cleaning unit comprises a second mounting ring (26) fixedly connected to the inner wall of the air inlet (21); a cleaning cylinder (27) is fixedly connected to a side of the second mounting ring (26) close to the first mounting ring (24); a connecting piece (28) is fixedly connected to an end of the cleaning cylinder (27) away from the second mounting ring (26); a mounting plate (29) is fixedly connected between a plurality of groups of the connecting pieces (28); and a plurality of groups of ejector pins (30) are fixedly connected to the mounting plate (29). The cleaning cylinder (27) and the driving cylinder (17) are connected via a pipeline, and the ejector pin (30) matches the hole on the dustproof plate (22).

7. A photovoltaic power distribution cabinet according to claim 5, characterized in that: The drainage mechanism comprises a heat exchange ring (23) fixedly connected to the air inlet (21); a connecting pipe (31) is connected between the heat exchange ring (23) and the water storage box (3); a first pneumatic valve (32) is arranged on the connecting pipe (31); a shunt pipe (33) is connected to the bottom of the heat exchange ring (23); a nozzle (34) is fixedly connected to one end of the shunt pipe (33) away from the heat exchange ring (23); and a second pneumatic valve (39) is arranged on one end of the shunt pipe (33) close to the heat exchange ring (23). The heat exchange ring (23) is fitted with the air inlet (21), and the nozzle (34) is located above the blade (13).

8. A photovoltaic power distribution cabinet according to claim 7, characterized in that: The control unit comprises a bimetallic strip (5) fixedly connected to the inner wall of the cabinet (1); a side of the inner wall of the cabinet (1) close to the bimetallic strip (5) is fixedly connected to an arc-shaped cylinder (6); and a control switch (7) is fixedly connected to one end of the arc-shaped cylinder (6) close to the bimetallic strip (5). The control switch (7) is electrically connected to the drive motor (10), and the arc cylinder (6) is connected to the first pneumatic valve (32) via a pipeline.

9. A photovoltaic power distribution cabinet according to claim 7, characterized in that: It also includes a limit plate (36) symmetrically fixedly connected to the inner wall of the heat exchange ring (23); a floating plate (35) is symmetrically slidably connected inside the heat exchange ring (23); a connecting plate (37) is symmetrically fixedly connected to the side of the heat exchange ring (23) close to the connecting pipe (31); and an extrusion cylinder (38) is fixedly connected to the side of the connecting plate (37) away from each other. The floating plate (35) is provided with a through hole, the floating plate (35) is in contact with the inner wall of the heat exchange ring (23), and the extrusion cylinder (38) and the second pneumatic valve (39) are connected via a pipeline.

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