A power distribution cabinet ventilation device and a power distribution cabinet ventilation method for a wind power system

Abstract

The application relates to the technical field of power distribution cabinets, and discloses a power distribution cabinet ventilation device and a power distribution cabinet ventilation method for a wind power system, which comprises a cabinet body, an equipment bin and a heat dissipation bin are arranged in the cabinet body, a partition plate is arranged between the equipment bin and the heat dissipation bin, a plurality of mounting plates are vertically arranged in the equipment bin, a heat dissipation manifold is arranged in the heat dissipation bin, a heat dissipation fan and an air outlet are arranged on the inner side of the heat dissipation manifold, a filter screen and a cleaning mechanism are arranged in the heat dissipation manifold, the cleaning mechanism comprises a cleaning brush, a one-way driving piece and a positioning piece, a swing mechanism is further arranged on the heat dissipation manifold, and the swing mechanism comprises an air deflector and a swing assembly; the application can clean the filter screen, avoid dust from entering the cabinet body, guide the blown wind, blow the electrical components at different positions on the mounting plates, and improve the heat dissipation effect of the electrical components.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically to a power distribution cabinet ventilation device and a power distribution cabinet ventilation method for wind power systems. Background Technology

[0002] Chinese Patent CN118889230B discloses a mobile vibration-damping and heat-dissipating power distribution cabinet, including a dustproof heat dissipation cabinet installed on a vibration-damping trolley. The dustproof heat dissipation power distribution cabinet includes a cabinet body installed on the vibration-damping trolley. The side of the cabinet body is provided with several air outlets and air inlets. The cabinet body is also provided with a sealed door. An automatic dust removal device is installed at the air inlet of the cabinet body. A first dustproof net is installed on the automatic dust removal device. An air suction device for drawing air is also installed on the automatic dust removal device. A power transmission device for transmitting kinetic energy to the automatic dust removal device is installed on the air suction device. An air guiding and supplying mechanism for guiding airflow is also installed on the air outlet of the cabinet body. A pull-out dust removal mechanism is installed on the pull-out dust removal mechanism. A second dustproof net is installed on the pull-out dust removal mechanism. This application can effectively prevent dust from entering the equipment and causing damage, while maintaining the heat dissipation effect. The above-mentioned technical solution has some shortcomings in actual use. For example, while it reduces the risk of directly brushing in large dust particles through the ideas of "external cleaning" and "airflow obstruction," some dust particles are easily "blown" by the cleaning brush when cleaning the filter, resulting in a smaller size. Since the fan is blowing air into the cabinet, some small dust particles can enter the connecting pipe. Furthermore, since the air blown out by the fan needs to be blown towards the electrical components inside the cabinet through the air outlet, dust can easily blow onto the electrical components, thus affecting their service life. In addition, since the air outlet is located at one end inside the cabinet, electrical components near the air outlet can easily block the airflow, thus affecting the air volume and consequently the heat dissipation effect on the electrical components. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a distribution cabinet ventilation device and a distribution cabinet ventilation method for wind power systems, thus solving the aforementioned problems.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a power distribution cabinet ventilation device, including a cabinet body, an equipment compartment and a heat dissipation compartment are provided inside the cabinet body, a partition is provided between the equipment compartment and the heat dissipation compartment, a plurality of mounting plates are vertically arranged inside the equipment compartment, the mounting plates are used to install electrical components, a heat dissipation manifold is provided inside the heat dissipation manifold, a cooling fan and an air outlet are provided on the inner side of the heat dissipation manifold, when the cooling fan is running, the heat dissipation manifold can blow the cooling fan out and blow it towards the equipment compartment through the air outlet; The heat dissipation manifold is equipped with a filter screen and a cleaning mechanism. The filter screen is used to block dust. The cleaning mechanism includes a cleaning brush, a one-way drive component, and a positioning component. The cleaning brush is used to clean the filter screen. The one-way drive component is used to drive the cleaning brush to rotate. The positioning component is used to clamp and fix the cleaning brush. The heat dissipation manifold is also provided with a swing mechanism, which includes an air guide plate and a swing assembly. The air guide plate array is distributed inside the air outlet, and the swing assembly is used to drive the air guide plate to move back and forth. The cooling fan has two states: forward rotation and reverse rotation. During the forward rotation phase, the cooling fan blows air towards the cooling manifold, and the air outlet blows the air towards the equipment compartment. At this time, the swing assembly drives the air guide plate to swing back and forth, thereby guiding the air blown out through the air outlet. At this time, the positioning member clamps and fixes the cleaning brush. During the reversal phase, the cooling fan blows air onto the filter, and the one-way drive drives the cleaning brush to clean the filter. At this time, the cooling manifold stops blowing air into the equipment compartment.

[0005] Preferably, the heat dissipation chamber has an air inlet, the air inlet is provided with a protective net, one end of the heat dissipation manifold is connected to the air inlet, and the other end of the heat dissipation manifold is distributed above each of the mounting plates. A bracket is provided on the outside of the cooling fan, the bracket is installed inside the air inlet, a motor is installed on the bracket, and the output shaft of the motor passes through the bracket and is connected to the cooling fan.

[0006] Preferably, the filter screen is installed inside the air inlet, the cleaning brush is distributed on the outside of the filter screen, and the inner side of the cleaning brush is symmetrically mounted with a brush plate by bolts. When the cleaning brush rotates, the brush plate can scrape the outer end face of the filter screen.

[0007] Preferably, the unidirectional drive component includes a coupling shaft, one end of which passes through the filter screen and is fixedly connected to the cleaning brush. The coupling shaft is mounted on the filter screen via a bearing seat. A sleeve shaft is fixedly connected to the end of the coupling shaft away from the cleaning brush. A unidirectional ratchet structure is provided on the inner side of the sleeve shaft. The end of the unidirectional ratchet structure away from the sleeve shaft passes through the sleeve shaft and is fixedly connected to the outer end face of the cooling fan.

[0008] Preferably, the positioning component includes symmetrically distributed positioning plates, which are fixedly connected to the side of the filter screen away from the cleaning brush. A limiting rod is slidably connected to the inner side of the positioning plate, and a limiting plate and a locking component are fixedly connected to both ends of the limiting rod, respectively. A brass sleeve is provided on the inner side of the locking component, and the inner side of the brass sleeve abuts against the connecting shaft. A positioning spring is fixedly connected to the outer side of the locking component, and the end of the positioning spring away from the locking component is fixedly connected to the inner side of the positioning plate.

[0009] Preferably, a rotating shaft is hinged to the inner side of the air guide plate, and both ends of the rotating shaft are fixedly connected to the inner side of the air outlet. The air outlet is inclined, and a hinge rod is rotatably connected to the inner side of the end of the air guide plate away from the rotating shaft.

[0010] Preferably, the oscillating assembly includes a turbofan, a fixed frame is provided on the outside of the turbofan, the turbofan is mounted on the inside of the heat dissipation manifold through the fixed frame, a drive shaft is fixedly connected to the outside of the turbofan, a drive gear is fixedly connected to the end of the drive shaft away from the turbofan through the heat dissipation manifold, a speed change gear meshes with the outside of the drive gear, a support plate is rotatably connected to the outside of the speed change gear, the support plate is mounted on the heat dissipation manifold, and an end face cam is fixedly connected to the outside of the speed change gear.

[0011] Preferably, the swing assembly further includes a crossbar slidably connected to the support plate, with one end of the hinged rod away from the air guide plate hinged to the crossbar, a circular plate fixedly connected to the crossbar, a return spring fixedly connected to the circular plate, one end of the return spring away from the circular plate fixedly connected to the inner side of the support plate, and a fixing plate fixedly connected to the end of the crossbar away from the circular plate passing through the support plate, with a support on the fixing plate, and a roller on the inner side of the support, the roller being rotatably connected to the end face cam.

[0012] Preferably, the mounting plate is provided with a plurality of mounting holes, and a positioning cross plate is fixedly connected to the mounting plate. A plurality of sets of heat dissipation holes are also provided on one side of the equipment compartment, with each set of heat dissipation holes distributed above each mounting plate.

[0013] A ventilation method for a distribution cabinet in a wind power system, which uses the aforementioned distribution cabinet ventilation device.

[0014] Compared with the prior art, the present invention provides a distribution cabinet ventilation device and a distribution cabinet ventilation method for wind power systems, which have the following beneficial effects: 1. In use, the electrical components are mounted on a mounting plate inside the equipment compartment. During heat dissipation, a cooling fan rotates forward, drawing air from outside the cabinet into the cooling manifold. The blown air is then discharged through the air outlet and guide plate, thus cooling the electrical components on the mounting plate. The filter screen blocks dust from the outside air while the cooling fan is running. When a large amount of dust accumulates on the filter screen, affecting heat dissipation, the cooling fan rotates in reverse, driving a one-way drive component. This component drives a cleaning brush, which cleans the dust on the filter screen. Simultaneously, because the cooling fan is in reverse, it blows air towards the filter screen, creating a reverse blowing effect. The dust swept by the cleaning brush is then blown out of the cabinet by the cooling fan. This achieves both heat dissipation for the electrical components and cleaning of the filter screen. Furthermore, the reverse blowing design prevents the swept dust from entering the cabinet, improving practicality and avoiding the problem of dust entering the cabinet.

[0015] 2. In this invention, when the cooling fan rotates forward, the air it blows out enters the cooling manifold, and then is discharged into the equipment compartment after being guided by the air outlet and the air guide plate. When the cooling fan rotates forward, the oscillating component operates, and the operation of the oscillating component drives one end of the air guide plate to oscillate in a circular motion. When the air guide plate oscillates, it can guide the air blown out of the air outlet, thereby blowing the air towards different electrical components on the mounting plate, thereby improving the heat dissipation effect on the electrical components.

[0016] 3. In this invention, the positioning component can clamp and fix the cleaning brush when the cooling fan is rotating in the forward direction. This prevents the external air blowing in when the cooling fan is running from driving the cleaning brush to rotate, which would cause the dust adhering to the filter screen to be brushed off and then enter the cabinet with the air blowing in. In addition, the brass sleeve reduces the friction between the coupling and the clamp, thereby improving the service life of the coupling. Attached Figure Description

[0017] Figure 1 This is a first-view schematic diagram of the present invention; Figure 2 This is a schematic diagram from a second perspective of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 This is a top-down first-view schematic diagram of the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the second perspective view of the invention from top to bottom; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B; Figure 8 This is a top-down, third-view schematic diagram of the present invention; Figure 9 This is a top-down fourth-view schematic diagram of the present invention; Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point C; Figure 11 This is a side sectional view of the sleeve structure of the present invention.

[0018] In the picture: 1. Cabinet; 11. Equipment compartment; 12. Heat dissipation compartment; 121. Air inlet; 122. Protective netting; 2. Partition; 3. Mounting plate; 31. Mounting holes; 32. Positioning cross plate; 4. Cooling manifold; 5. Air outlet; 6. Cooling fan; 61. Bracket; 62. Motor; 7. Filter screen; 8. Cleaning services; 81. Cleaning brush; 811. Brush plate; 82. One-way drive component; 821. Coupling; 822. Sleeve shaft; 823. One-way ratchet structure; 83. Positioning component; 831. Positioning plate; 832. Limiting rod; 833. Limiting plate; 834. Clamping component; 835. Brass sleeve; 836. Positioning spring; 9. Swinging mechanism; 91. Air guide plate; 911. Rotating shaft; 912. Hinge rod; 92. Oscillating assembly; 921. Turbofan; 922. Fixing frame; 923. Drive shaft; 924. Drive gear; 925. Speed ​​change gear; 926. Support plate; 927. Crossbar; 928. Circular plate; 929. Return spring; 9210. Fixing plate; 9211. Support; 9212. Roller; 9213. End face cam. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a distribution cabinet ventilation device and a distribution cabinet ventilation method for wind power systems.

[0021] Example 1: Please refer to Figures 1-11 A power distribution cabinet ventilation device includes a cabinet 1, an equipment compartment 11 and a heat dissipation compartment 12 are provided inside the cabinet 1, a partition 2 is provided between the equipment compartment 11 and the heat dissipation compartment 12, a number of mounting plates 3 are arranged vertically inside the equipment compartment 11, a number of mounting holes 31 are provided on the mounting plates 3, a positioning horizontal plate 32 is also fixedly connected to the mounting plates 3, a number of heat dissipation holes are provided on one side of the equipment compartment 11, each set of heat dissipation holes is distributed above each mounting plate 3, the mounting plates 3 are used to install electrical components, a heat dissipation manifold 4 is provided inside the heat dissipation manifold 4, a cooling fan 6 and an air outlet 5 are provided on the inner side of the heat dissipation manifold 4, when the cooling fan 6 is running, the heat dissipation manifold 4 can blow the cooling fan 6 out and blow it towards the equipment compartment 11 through the air outlet 5; The heat dissipation manifold 4 is equipped with a filter screen 7 and a cleaning mechanism 8. The filter screen 7 is used to block dust. The cleaning mechanism 8 includes a cleaning brush 81, a one-way drive component 82, and a positioning component 83. The cleaning brush 81 is used to clean the filter screen 7. The one-way drive component 82 is used to drive the cleaning brush 81 to rotate. The positioning component 83 is used to clamp and fix the cleaning brush 81. The heat dissipation manifold 4 is also provided with a swing mechanism 9, which includes an air guide plate 91 and a swing component 92. The air guide plate 91 is arrayed inside the air outlet 5, and the swing component 92 is used to drive the air guide plate 91 to move back and forth. Cooling fan 6 has two states: forward rotation and reverse rotation; During the forward rotation phase, the cooling fan 6 blows air towards the cooling manifold 4, and the air outlet 5 blows the air towards the equipment compartment 11. At this time, the swing component 92 drives the air guide plate 91 to swing back and forth, thereby guiding the air blown out through the air outlet 5. At this time, the positioning component 83 clamps and fixes the cleaning brush 81. During the reversal phase, the cooling fan 6 blows air into the filter 7, and the one-way drive component 82 drives the cleaning brush 81 to clean the filter 7. At this time, the cooling manifold 4 stops blowing air into the equipment compartment 11.

[0022] In use, the electrical components are mounted on the mounting plate 3. During heat dissipation, the cooling fan 6 rotates in the forward direction, drawing air from outside the cabinet 1 into the cooling manifold 4. After the air enters the cooling manifold 4, the oscillating component 92 drives one end of the air guide plate 91 to oscillate in a circular motion. When the air guide plate 91 oscillates, it guides the air blown out of the air outlet 5, directing the air towards different electrical components on the mounting plate 3, thereby improving the heat dissipation effect on the electrical components. The filter 7 blocks dust from the outside air when the cooling fan 6 is running, and the positioning component 83 clamps and fixes the cleaning brush 81 when the cooling fan 6 rotates in the forward direction, thus preventing the outside air from driving the cleaning brush 81 to rotate on its own when the cooling fan 6 is running, which would cause dust to adhere to the filter 7. When dust is brushed off and then enters the cabinet 1 with the blowing air, causing a lot of dust to adhere to the filter 7 and thus affecting heat dissipation, the cooling fan 6 is driven to rotate in reverse, which in turn drives the unidirectional drive component 82. The rotation of the unidirectional drive component 82 drives the cleaning brush 81 to rotate. The cleaning brush 81 cleans the dust adhering to the filter 7. At the same time, since the cooling fan 6 is in reverse state at this time, the cooling fan 6 will blow air towards the filter 7, thus forming a reverse blowing. At this time, the dust swept off by the cleaning brush 81 is blown out of the cabinet 1 by the cooling fan 6. This achieves the goal of cleaning the filter 7 while preventing dust from entering the cabinet 1. It can also guide the blown air so that the electrical components in different positions on the mounting plate 3 can be blown, thereby improving the heat dissipation effect of the electrical components.

[0023] Example 2: See Figures 1-11 Unlike the first embodiment described above, the heat dissipation chamber 12 has an air inlet 121, and a protective mesh 122 is provided on the air inlet 121. One end of the heat dissipation manifold 4 is connected to the air inlet 121, and the other end of the heat dissipation manifold 4 is distributed above each mounting plate 3. A bracket 61 is provided on the outside of the cooling fan 6, and the bracket 61 is installed inside the air inlet 121. A motor 62 is installed on the bracket 61, and the output shaft of the motor 62 passes through the bracket 61 and is connected to the cooling fan 6. A filter screen 7 is installed inside the air inlet 121, and cleaning brushes 81 are distributed on the outside of the filter screen 7. Brush plates 811 are symmetrically installed on the inner side by bolts. When the cleaning brush 81 rotates, the brush plates 811 can scrape the outer end face of the filter screen 7. The one-way drive component 82 includes a connecting shaft 821. One end of the connecting shaft 821 passes through the filter screen 7 and is fixedly connected to the cleaning brush 81. The connecting shaft 821 is installed on the filter screen 7 through a bearing seat. The end of the connecting shaft 821 away from the cleaning brush 81 is fixedly connected to a sleeve shaft 822. A one-way ratchet structure 823 is provided on the inner side of the sleeve shaft 822. The end of the one-way ratchet structure 823 away from the sleeve shaft 822 passes through the sleeve shaft 822 and is fixedly connected to the outer end face of the cooling fan 6. During heat dissipation, motor 62 drives cooling fan 6 to rotate. At this time, cooling fan 6 guides outside air. The guided air enters cooling manifold 4 through air inlet 121 and protective mesh 122, and then blows through cooling manifold 4 towards the electrical components on mounting plate 3. When it is necessary to clean filter 7, motor 62 drives cooling fan 6 to rotate in the reverse direction. Cooling fan 6 drives one-way ratchet structure 823 to rotate. The rotation of one-way ratchet structure 823 drives sleeve shaft 822 to rotate. The rotation of sleeve shaft 822 drives connecting shaft 821 to rotate. The rotation of connecting shaft 821 drives cleaning brush 81 to rotate. The rotation of cleaning brush 81 drives brush plate 811 to rotate. The rotation of brush plate 811 cleans filter 7. Since cooling fan 6 is in reverse state at this time, that is, blowing air onto filter 7, the dust brushed off by brush plate 811 will be blown away from cabinet 1. When cooling fan 6 rotates in the forward direction, the setting of one-way ratchet structure 823 prevents cleaning brush 81 from rotating, thus avoiding the problem of dust entering cabinet 1.

[0024] Example 3, see Figures 1-11 Unlike the second embodiment described above, the positioning component 83 includes symmetrically distributed positioning plates 831. The positioning plates 831 are fixedly connected to the side of the filter screen 7 away from the cleaning brush 81. The inner side of the positioning plate 831 is slidably connected to a limiting rod 832. The two ends of the limiting rod 832 are respectively fixedly connected to a limiting plate 833 and a locking component 834. A brass sleeve 835 is provided on the inner side of the locking component 834. The inner side of the brass sleeve 835 abuts against the connecting shaft 821. A positioning spring 836 is fixedly connected to the outer side of the locking component 834. The end of the positioning spring 836 away from the locking component 834 is fixedly connected to the inner side of the positioning plate 831. When the cooling fan 6 rotates forward, the coupling 821 does not rotate. At this time, the clamp 834 and the brass sleeve 835 can hold the coupling 821, thus preventing the coupling 821 from rotating. When the cooling fan 6 rotates in the reverse direction, the cooling fan 6 drives the coupling 821 and the cleaning brush 81 to rotate through the cooperation of the one-way drive component 82. After the coupling 821 rotates, the driving force it receives is greater than the elastic force of the positioning spring 836, so that the coupling 821 and the brass sleeve 835 remain in contact and rotate, thus facilitating the subsequent operation of the cleaning brush 81.

[0025] Example 4, see Figures 1-11Unlike Embodiment 3 described above, the inner side of the air guide plate 91 is hinged with a rotating shaft 911. Both ends of the rotating shaft 911 are fixedly connected to the inner side of the air outlet 5, which is inclined. The inner side of the end of the air guide plate 91 away from the rotating shaft 911 is rotatably connected to a hinge rod 912. The swing assembly 92 includes a turbo fan 921. A fixing frame 922 is provided on the outer side of the turbo fan 921. The turbo fan 921 is installed inside the heat dissipation manifold 4 through the fixing frame 922. A drive shaft 923 is fixedly connected to the outer side of the turbo fan 921. The end of the drive shaft 923 away from the turbo fan 921 passes through the heat dissipation manifold 4 and is fixedly connected to a drive gear 924. A speed change gear 925 meshes with the outer side of the drive gear 924. A support plate 926 is rotatably connected to the outer side of the speed change gear 925. The support plate 926 is installed on... On the heat dissipation manifold 4, an end face cam 9213 is fixedly connected to the outer side of the transmission gear 925. The swing assembly 92 also includes a crossbar 927, which is slidably connected to the support plate 926. The end of the hinge rod 912 away from the air guide plate 91 is hinged to the crossbar 927. A circular plate 928 is fixedly connected to the crossbar 927. A return spring 929 is fixedly connected to the circular plate 928. The end of the return spring 929 away from the circular plate 928 is fixedly connected to the inner side of the support plate 926. The end of the crossbar 927 away from the circular plate 928 passes through the support plate 926 and is fixedly connected to a fixing plate 9210. A support 9211 is provided on the fixing plate 9210. A roller 9212 is provided on the inner side of the support 9211. The roller 9212 is rotatably connected to the end face cam 9213. When the cooling fan 6 rotates forward, it guides external airflow into the cooling manifold 4. At this time, the turbofan 921 rotates due to the airflow. The rotation of the turbofan 921 drives the drive shaft 923 to rotate, which in turn drives the drive gear 924 to rotate. The drive gear 924 then drives the transmission gear 925 to rotate, which in turn drives the end face cam 9213 to rotate. Since the roller 9212 is rolled on the end face cam 9213, the rotation of the end face cam 9213 guides the roller 9212 and the crossbar 927 to move. The movement of the 7th movement drives the hinge rod 912 to move. The movement of the hinge rod 912, in cooperation with the rotating shaft 911, drives one end of the air guide plate 91 to move. The movement of the crossbar 927 compresses the return spring 929. As the end face cam 9213 rotates continuously, and in cooperation with the return spring 929, the crossbar 927 can drive the air guide plate 91 to swing back and forth. The swing of the air guide plate 91 can guide the air blown out of the air outlet 5, thereby guiding it to blow other electrical components. When the cooling fan 6 reverses, the airflow received by the turbo fan 921 is smaller, so that the swing assembly 92 will not operate.

[0026] Example 5: A ventilation method for a distribution cabinet in a wind power system, using the above-mentioned distribution cabinet ventilation device.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for a power distribution cabinet, comprising a cabinet body, wherein the cabinet body is provided with an equipment compartment and a heat dissipation compartment, characterized in that: A partition is provided between the equipment compartment and the heat dissipation compartment. Several mounting plates are arranged vertically in the equipment compartment. The mounting plates are used to install electrical components. A heat dissipation manifold is provided in the heat dissipation compartment. A cooling fan and an air outlet are provided on the inner side of the heat dissipation manifold. When the cooling fan is running, the heat dissipation manifold can blow the cooling fan out and blow it into the equipment compartment through the air outlet. The heat dissipation manifold is equipped with a filter screen and a cleaning mechanism. The filter screen is used to block dust. The cleaning mechanism includes a cleaning brush, a one-way drive component, and a positioning component. The cleaning brush is used to clean the filter screen. The one-way drive component is used to drive the cleaning brush to rotate. The positioning component is used to clamp and fix the cleaning brush. The heat dissipation manifold is also provided with a swing mechanism, which includes an air guide plate and a swing assembly. The air guide plate array is distributed inside the air outlet, and the swing assembly is used to drive the air guide plate to move back and forth. The cooling fan has two states: forward rotation and reverse rotation. During the forward rotation phase, the cooling fan blows air towards the cooling manifold, and the air outlet blows the air towards the equipment compartment. At this time, the swing assembly drives the air guide plate to swing back and forth, thereby guiding the air blown out through the air outlet. At this time, the positioning member clamps and fixes the cleaning brush. During the reversal phase, the cooling fan blows air onto the filter, and the one-way drive drives the cleaning brush to clean the filter. At this time, the cooling manifold stops blowing air into the equipment compartment.

2. The distribution cabinet ventilation device according to claim 1, characterized in that: The heat dissipation chamber has an air inlet, and a protective net is provided on the air inlet. One end of the heat dissipation manifold is connected to the air inlet, and the other end of the heat dissipation manifold is distributed above each of the mounting plates. A bracket is provided on the outside of the cooling fan, and the bracket is installed inside the air inlet. A motor is installed on the bracket, and the output shaft of the motor passes through the bracket and is connected to the cooling fan.

3. A distribution cabinet ventilation device according to claim 2, characterized in that: The filter screen is installed inside the air inlet, and the cleaning brush is distributed on the outside of the filter screen. The inner side of the cleaning brush is symmetrically equipped with a brush plate by bolts. When the cleaning brush rotates, the brush plate can scrape the outer end face of the filter screen.

4. A distribution cabinet ventilation device according to claim 3, characterized in that: The unidirectional drive component includes a coupling shaft, one end of which passes through the filter screen and is fixedly connected to the cleaning brush. The coupling shaft is mounted on the filter screen via a bearing seat. A sleeve shaft is fixedly connected to the end of the coupling shaft away from the cleaning brush. A unidirectional ratchet structure is provided on the inner side of the sleeve shaft. The end of the unidirectional ratchet structure away from the sleeve shaft passes through the sleeve shaft and is fixedly connected to the outer end face of the cooling fan.

5. A power distribution cabinet ventilation device according to claim 4, characterized in that: The positioning component includes symmetrically distributed positioning plates, which are fixedly connected to the side of the filter screen away from the cleaning brush. A limiting rod is slidably connected to the inner side of the positioning plate, and a limiting plate and a locking component are fixedly connected to both ends of the limiting rod, respectively. A brass sleeve is provided on the inner side of the locking component, and the inner side of the brass sleeve abuts against the connecting shaft. A positioning spring is fixedly connected to the outer side of the locking component, and the end of the positioning spring away from the locking component is fixedly connected to the inner side of the positioning plate.

6. A distribution cabinet ventilation device according to claim 1, characterized in that: The air guide plate is hinged to a rotating shaft on its inner side. Both ends of the rotating shaft are fixedly connected to the inner side of the air outlet. The air outlet is inclined. A hinge rod is rotatably connected to the inner side of the end of the air guide plate away from the rotating shaft.

7. A distribution cabinet ventilation device according to claim 6, characterized in that: The oscillating assembly includes a turbofan, a fixed frame is provided on the outside of the turbofan, the turbofan is installed on the inside of the heat dissipation manifold through the fixed frame, a drive shaft is fixedly connected to the outside of the turbofan, the end of the drive shaft away from the turbofan passes through the heat dissipation manifold and is fixedly connected to a drive gear, a speed change gear meshes with the outside of the drive gear, a support plate is rotatably connected to the outside of the speed change gear, the support plate is installed on the heat dissipation manifold, and an end face cam is fixedly connected to the outside of the speed change gear.

8. A distribution cabinet ventilation device according to claim 7, characterized in that: The swing assembly also includes a crossbar slidably connected to the support plate. The end of the hinge rod away from the air guide plate is hinged to the crossbar. A circular plate is fixedly connected to the crossbar, and a return spring is fixedly connected to the circular plate. The end of the return spring away from the circular plate is fixedly connected to the inner side of the support plate. The end of the crossbar away from the circular plate passes through the support plate and is fixedly connected to a fixing plate. A support is provided on the fixing plate, and a roller is provided on the inner side of the support. The roller is rotatably connected to the end face cam.

9. A distribution cabinet ventilation device according to claim 1, characterized in that: The mounting plate is provided with a number of mounting holes, and a positioning cross plate is fixedly connected to the mounting plate. A number of heat dissipation holes are also provided on one side of the equipment compartment, and each set of heat dissipation holes is distributed above each mounting plate.

10. A ventilation method for a distribution cabinet in a wind power system, characterized in that: The power distribution cabinet ventilation device as described in any one of claims 1-9 was used.

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