Carbon removal device for wind turbine generator slip ring chamber

Abstract

This invention discloses a carbon removal device for the collector ring chamber of a wind turbine, comprising: a first air inlet channel, an exhaust channel, and a cleaning channel. The outlet of the first air inlet channel faces the area within the collector ring chamber where carbon accumulates between the collector ring and the carbon brush. The first air inlet channel is equipped with a first filter unit, a first valve, and an intake fan arranged sequentially along the airflow direction. The exhaust channel is equipped with an exhaust fan and a second valve, arranged sequentially along the airflow direction. The first end of the cleaning channel is connected to the first air inlet channel, and the second end of the cleaning channel is connected to the exhaust channel. The cleaning channel is equipped with a third valve. In addition to the normal carbon removal process, the device can automatically purge and clean the first filter unit in situ by switching the valve states and utilizing the power of the system's own exhaust fan to create a reverse airflow through in-situ cleaning. This restores the air permeability of the filter unit, ensures the continuity of carbon removal efficiency, and effectively reduces maintenance frequency.

Description

Technical Field

[0001] This invention relates to the field of carbon removal technology for the collector ring chamber of wind turbine generators, and more particularly to a carbon removal device for the collector ring chamber of a wind turbine generator. Background Technology

[0002] The slip ring chamber of a wind turbine is primarily responsible for transmitting current between rotating and stationary components, ensuring a stable output of electrical energy. During long-term operation, mechanical friction and electrical discharge between the brushes and slip rings gradually lead to carbon deposits. If these carbon deposits are not treated promptly, they can cause problems such as increased electrical contact resistance, overheating of contact surfaces, abnormal signal transmission, and even equipment malfunction.

[0003] Existing carbon removal devices in the collector ring chamber of wind turbines generally integrate air filter units. This unit effectively captures carbon particles generated during the removal process while also purifying the incoming air. However, under continuous operation, the filter unit inevitably traps and accumulates a large amount of carbon powder and mixed impurities. This accumulation directly obstructs the airflow, significantly reducing the intake air volume. The carbon removal efficiency gradually deteriorates due to poor airflow circulation, making it impossible to maintain a stable carbon removal capacity. Consequently, the maintenance cycle for manual cleaning or replacement of the filter unit is shortened, and the maintenance frequency increases significantly, thereby increasing system downtime and maintenance burden. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a carbon removal device for the collector ring chamber of a wind turbine generator, which reduces the frequency of operation and maintenance.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The carbon removal device for the collector ring chamber of a wind turbine includes:

[0007] The first air intake channel has a first air inlet for communicating with the external environment and a first air outlet for communicating with the collector ring chamber. The air outlet of the first air intake channel faces the carbon deposit area between the collector ring and the carbon brush inside the collector ring chamber. The first air intake channel is equipped with a first filter unit, a first valve, and an air intake fan. The first filter unit, the first valve, and the air intake fan are arranged sequentially along the airflow direction. The first filter unit is used to intercept pollutants in the air, the air intake fan is used to guide outside air into the collector ring chamber, and the first valve is used to control the opening and closing of the first air intake channel.

[0008] An exhaust channel is provided to connect the collector ring chamber with the external environment. The exhaust channel is equipped with an exhaust fan and a second valve. The exhaust fan and the second valve are arranged sequentially along the airflow direction. The exhaust fan is used to guide the air in the collector ring chamber to the external environment, and the second valve is used to control the opening and closing of the exhaust channel.

[0009] A cleaning channel is provided, wherein the first end of the cleaning channel is located between the first air inlet and the first valve, and the first end of the cleaning channel is connected to the first air inlet channel; the second end of the cleaning channel is located between the exhaust fan and the second valve, and the second end of the cleaning channel is connected to the exhaust channel; and the cleaning channel is provided with a third valve, which is used to control the opening and closing of the cleaning channel.

[0010] Furthermore, the exhaust passage is connected to a second air intake passage, the second air intake passage is provided with a second air inlet, and the second air inlet is provided with a one-way valve, the one-way valve being used to allow airflow from the external environment to enter the exhaust passage.

[0011] Furthermore, the diameter of the second air inlet is smaller than the diameter of the exhaust channel.

[0012] Furthermore, a guide baffle is provided at the connection between the exhaust passage and the second intake passage, and the guide baffle is positioned toward the second intake passage so that the airflow resistance of the second intake passage is greater than that of the exhaust passage.

[0013] Furthermore, the exhaust passage is provided with a carbon collection box, which is located between the exhaust fan and the collector ring chamber. The carbon collection box is provided with a first receiving cavity for containing carbon powder.

[0014] Furthermore, the carbon collection box is provided with a second filter unit, which is inclined downward along the gas flow direction of the exhaust channel. The second filter unit, the exhaust fan and the second valve are arranged in sequence along the airflow direction.

[0015] Furthermore, the carbon removal device for the collector ring chamber of the wind turbine generator also includes a nozzle, which is located at the first air outlet and faces the part where carbon is deposited between the collector ring and the carbon brush.

[0016] Furthermore, the wind turbine collector ring chamber carbon removal device also includes a distribution plate, which is arranged around the inner wall of the collector ring chamber to form a second receiving cavity between the distribution plate and the collector ring chamber. The distribution plate is provided with a plurality of nozzles, which are spaced apart on the distribution plate, and each nozzle is directed toward the part where carbon is deposited between the collector ring and the carbon brush.

[0017] Furthermore, the plurality of nozzles are distributed at intervals around the axis and circumferentially of the collector ring.

[0018] Furthermore, the first intake channel and the exhaust channel are located on opposite sides of the collector ring chamber, with the intake port of the exhaust channel located below.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. A first air inlet of the first air intake channel is used to communicate with the external environment, and a first air outlet of the first air intake channel is used to communicate with the collector ring chamber. The air outlet of the first air intake channel faces the carbon deposited area between the collector ring and the carbon brush inside the collector ring chamber. The first air intake channel is equipped with a first filter unit, a first valve, and an intake fan. The first filter unit, the first valve, and the intake fan are arranged sequentially along the airflow direction. The first filter unit is used to intercept pollutants in the air, the intake fan is used to guide outside air into the collector ring chamber, and the first valve is used to control the opening and closing of the first air intake channel. The first filter unit in the first air intake channel filters and purifies the intake air, effectively isolating external dust and moisture, and avoiding the deterioration of electrical contact surfaces and additional cleaning requirements caused by the intrusion of pollutants.

[0021] 2. The exhaust channel connects the collector ring chamber to the external environment. The exhaust channel is equipped with an exhaust fan and a second valve, which are sequentially arranged along the airflow direction. The exhaust fan guides the air from the collector ring chamber to the external environment. The directional and continuous airflow created by the exhaust channel and the first intake channel stably and efficiently discharges toner continuously to the outside, significantly reducing toner settling and accumulation inside the collector ring chamber, thereby greatly extending the cycle of thorough manual cleaning.

[0022] 3. The first end of the cleaning channel is located between the first air inlet and the first valve, and the first end of the cleaning channel is connected to the first air inlet channel. The second end of the cleaning channel is located between the exhaust fan and the second valve, and the second end of the cleaning channel is connected to the exhaust channel. The cleaning channel is equipped with a third valve, which is used to control the opening and closing of the cleaning channel. By cooperating with the first valve, the second valve, and the third valve respectively, the device can automatically purge and clean the first filter unit online and in-situ by switching the valve states and using the power of the system's own exhaust fan to form a reverse airflow, in addition to the normal carbon removal process. This not only greatly restores the air permeability of the filter unit and maintains the long-term stability of the intake air volume, ensuring the continuity of carbon removal efficiency, but also directly and effectively extends the maintenance interval of the filter unit. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the carbon removal device for the collector ring chamber of the wind turbine generator according to the present invention;

[0024] Figure 2 for Figure 1 The sectional view shown.

[0025] In the diagram: 1. First air intake channel; 2. First air inlet; 3. First air outlet; 4. First filter unit; 5. First valve; 6. Intake fan; 7. Exhaust channel; 8. Exhaust fan; 9. Second valve; 10. Cleaning channel; 11. Third valve; 12. Second air intake channel; 13. Second air inlet; 14. One-way valve; 15. Guide baffle; 16. Carbon collection box; 17. First receiving cavity; 18. Second filter unit; 19. Nozzle; 20. Distribution plate; 21. Second receiving cavity. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] See Figures 1-2 A preferred embodiment of the wind turbine collector ring chamber carbon removal device of the present invention includes: a first air intake channel 1, an exhaust channel 7 and a cleaning channel 10.

[0030] The first air inlet 2 of the first air intake channel 1 is used to communicate with the external environment, and the first air outlet 3 of the first air intake channel 1 is used to communicate with the collector ring chamber. The air outlet of the first air intake channel 1 faces the carbon deposit area between the collector ring and the carbon brush in the collector ring chamber. The first air intake channel 1 is equipped with a first filter unit 4, a first valve 5, and an intake fan 6. The first filter unit 4, the first valve 5, and the intake fan 6 are arranged sequentially along the airflow direction. The first filter unit 4 is used to intercept pollutants in the air, and the intake fan 6 is used to guide outside air into the collector ring chamber. The first valve 5 is used to control the opening and closing of the first air intake channel 1. The first filter unit 4 is used to intercept pollutants in the air and can use non-woven fabric, activated carbon filter material, or metal mesh, etc., to achieve effective filtration of particles of different sizes and moisture. The first valve 5 is used to control the opening and closing of the first air intake channel 1 to achieve reliable opening and closing of the air passage. The intake fan 6 is used to actively guide the filtered outside air into the collector ring chamber. This structure allows clean outside air to be directed to flush away carbon deposits, directly dispersing and carrying away loose carbon powder. Simultaneously, the first filter unit 4 prevents external contaminants from entering the collector ring chamber with the airflow, thus preventing secondary contamination and abnormal wear of the internal electrical contact surfaces and ensuring long-term unobstructed airflow. Because the first filter unit 4 purifies the intake air, its function is separated from the carbon powder collection function inside the carbon removal device, significantly reducing its load and slowing down the clogging process. This allows the intake air volume to remain stable for extended periods, ensuring continuous carbon removal efficiency. While improving the cleanliness inside the collector ring chamber, this effectively extends the service life of the first filter unit 4 and the system's maintenance-free cycle.

[0031] The exhaust channel 7 connects the collector ring chamber to the external environment. The exhaust channel 7 is equipped with an exhaust fan 8 and a second valve 9, arranged sequentially along the airflow direction. The exhaust fan 8 guides the air from the collector ring chamber to the external environment, and the second valve 9 controls the opening and closing of the exhaust channel 7. The air inlet of the exhaust channel 7 connects to the collector ring chamber, and the air outlet connects to the external environment. The exhaust fan 8 actively guides the air containing carbon powder from the collector ring chamber to the external environment, while the second valve 9 controls the opening and closing of the exhaust channel 7 to ensure reliable opening and closing of the exhaust path. The coordinated operation of the exhaust channel 7 and the first intake channel 1 creates a directional, continuous airflow from the intake to the exhaust outlet within the collector ring chamber, efficiently and quickly expelling suspended carbon powder washed down by the intake airflow to the outside, effectively preventing secondary sedimentation and accumulation of carbon powder indoors. The second valve 9 allows the system to close the passage during non-working periods or maintenance, preventing backflow of foreign objects and facilitating isolated maintenance of components such as the exhaust fan 8. This exhaust passage 7, together with the first intake passage 1, forms a highly efficient and controllable air circulation system, significantly improving the efficiency of toner removal and discharge, reducing the toner residue level inside the collector ring chamber, thereby lessening the subsequent cleaning burden and extending the maintenance intervals of major components.

[0032] The first end of the cleaning channel 10 is located between the first air inlet 2 and the first valve 5, and the first end of the cleaning channel 10 is connected to the first air intake channel 1. The second end of the cleaning channel 10 is located between the exhaust fan 8 and the second valve 9, and the second end of the cleaning channel 10 is connected to the exhaust channel 7. The cleaning channel 10 is equipped with a third valve 11, which is used to control the opening and closing of the cleaning channel 10. When the filter unit needs to be cleaned, the first valve 5 of the first air intake channel 1 and the second valve 9 of the exhaust channel 7 can be closed, while the third valve 11 of the cleaning channel 10 can be opened. At this time, driven by the exhaust fan 8, the airflow will flow from the exhaust channel 7 into the first air intake channel 1 in reverse through the cleaning channel 10, and finally be discharged from the first air inlet 2, forming an independent cleaning loop that does not pass through the collector ring chamber. This reverse airflow can effectively blow away the dust and impurities attached to the surface and internal fibers of the first filter unit 4, causing them to fall off and be carried out of the system by the airflow. This design realizes in-situ, online cleaning of the first filter unit 4 without disassembly. By regularly activating this cleaning function, the clogging problem caused by the accumulation of contaminants in the filter unit can be significantly alleviated, thereby maintaining its filtration efficiency and airflow for a longer period of time, ultimately extending the manual maintenance cycle of the filter unit and reducing the overall maintenance frequency.

[0033] Working principle: The first intake channel 1 directs clean air purified by the first filter unit 4 into the collector ring chamber, flushing away carbon deposits and carrying carbon powder along with it; the exhaust channel 7 actively discharges carbon-containing air. The two channels form a directional airflow that continuously removes carbon powder, preventing internal contamination and carbon powder accumulation, thus reducing the burden of routine cleaning. By switching the opening and closing states of the first valve 5, the second valve 9, and the third valve 11, the exhaust fan 8 can use its power to reverse-purge the airflow through the cleaning channel 10 to clean the first filter unit 4. This cleaning function effectively restores the air permeability of the filter unit without disassembly, fundamentally alleviating the performance degradation caused by filter unit blockage. This ensures long-term unobstructed airflow and stable carbon removal efficiency, reducing system downtime and maintenance frequency.

[0034] Clearly, the first filter unit 4 in the first air intake channel 1 filters and purifies the intake air, effectively isolating external dust and moisture, and avoiding the deterioration of electrical contact surfaces and additional cleaning requirements caused by contaminant intrusion. The directional and continuous airflow constructed by the exhaust channel 7 and the first air intake channel 1 can stably and efficiently discharge carbon powder continuously outdoors, significantly reducing carbon powder settling and accumulation inside the collector ring chamber, thereby greatly extending the operation cycle of thorough manual cleaning. Through the cleaning channel 10, which cooperates with the first valve 5, the second valve 9, and the third valve 11 respectively, the device can automatically clean the first filter unit 4 online and in-situ by switching the valve states and using the power of the system's own exhaust fan 8 to form a reverse airflow, in addition to the normal carbon removal process. This not only greatly restores the air permeability of the filter unit and maintains the long-term stability of the intake air volume, ensuring the continuity of carbon removal efficiency, but also directly and effectively extends the maintenance interval of the filter unit.

[0035] In this embodiment, preferably, the exhaust channel 7 is connected to a second intake channel 12, the second intake channel 12 is provided with a second intake port 13, and the second intake port 13 is provided with a one-way valve 14. The one-way valve 14 is used to allow airflow from the external environment to enter the exhaust channel 7. The one-way valve 14 can be a butterfly check valve, a plate check valve, or a ball check valve, etc. This one-way valve 14 is used to allow airflow from the external environment to enter the exhaust channel 7 under the action of pressure difference, while preventing gas in the exhaust channel 7 from flowing back out. When the device performs the cleaning process, the first valve 5 of the first intake channel 1 is in the closed state, and air is automatically introduced from the outside through the second intake channel 12 and the one-way valve 14 opened under pressure difference, driven by the exhaust fan 8, for backflushing and cleaning the first filter unit 4. This design ensures the continuity and stability of airflow in the cleaning circuit, so that backflushing cleaning can be carried out effectively. Furthermore, this structure also serves as an auxiliary function in balancing the internal and external pressures of the system during normal exhaust processes. When the exhaust fan 8 operates at high speed, causing significant negative pressure within the channel, a suitable amount of outside air can be drawn in through the one-way valve 14, which helps stabilize the exhaust conditions and prevents adverse effects on airflow organization due to excessive negative pressure. Simultaneously, it effectively prevents backflow of external pollutants. By providing an auxiliary air intake path that can be automatically activated under specific operating conditions, the system optimizes and ensures airflow supply and pressure balance in different operating modes, thereby enhancing the functional integrity and operational reliability of the device and reducing maintenance frequency.

[0036] In this embodiment, preferably, the diameter of the second air inlet 13 is smaller than the diameter of the exhaust channel 7. This dimensional relationship ensures that the second air inlet channel 12, as an auxiliary air passage, limits the airflow rate supplied per unit time due to its smaller flow cross-section, thereby avoiding excessive interference or dilution of the main exhaust airflow during regular exhaust or cleaning processes. Simultaneously, the smaller diameter helps maintain the working negative pressure required by the exhaust fan 8 in cleaning mode, ensuring that the backflow airflow has sufficient velocity to effectively remove deposits from the filter unit surface. While achieving pressure balancing and supplementary air supply functions, this optimizes the airflow distribution and power matching of the system under different operating conditions, further improving the coordination and reliability of the device operation.

[0037] In this embodiment, preferably, a guide baffle 15 is provided at the connection between the exhaust channel 7 and the second intake channel 12. The guide baffle 15 is positioned towards the second intake channel 12 so that the airflow resistance of the second intake channel 12 is greater than that of the exhaust channel 7. This ensures that the airflow entering from the second intake channel 12 must first be guided and throttled by the guide baffle 15, thereby making the airflow resistance of this path significantly greater than the flow resistance of the main path of the exhaust channel 7. This ensures that under normal carbon removal and exhaust conditions, the main airflow from the collector ring chamber can flow almost unimpeded along the less resistant exhaust channel 7, and its flow rate and velocity are almost unaffected by the existence of the bypass in the second intake channel 12, thus guaranteeing the efficiency of the core carbon removal function. When performing the filter unit cleaning process, when the main path of the first intake channel 1 is closed, the negative pressure formed by the system will mainly act on the more resistant second intake channel 12, thereby causing outside air to enter stably and concentratedly through this path, providing the necessary and controlled air source for backflushing cleaning. The guide baffle 15 enables differentiated distribution of parallel air path resistance, optimizes the airflow dynamic characteristics of the system in different modes, maintains the purity and efficiency of airflow organization during normal carbon removal, and ensures the reliability and effectiveness of air source switching during cleaning mode. From a structural perspective, it guarantees the independence of each functional mode and the overall stable operation of the system.

[0038] In this embodiment, preferably, the exhaust channel 7 is provided with a carbon collection box 16, which is located between the exhaust fan 8 and the collector ring chamber. The carbon collection box 16 has a first receiving cavity 17 for containing carbon powder. The first receiving cavity 17 is used to physically contain and deposit carbon powder particles discharged from the collector ring chamber with the airflow. A pull-out carbon powder collection box can be further provided below the carbon collection box 16 so that the accumulated carbon powder can be easily removed and centrally processed during maintenance. The carbon-containing airflow passes through the carbon collection box 16 before entering the exhaust fan 8. Due to the increased flow cross-section and reduced flow velocity, the carbon powder is effectively separated and retained in the first receiving cavity 17 and the pull-out collection box below it under the action of gravity and inertia, thereby significantly reducing the amount of carbon powder entering the subsequent exhaust fan 8 and exhaust channel 7, and preventing the carbon powder from adhering to and accumulating on the fan blades and pipe walls. This design not only reduces contamination and wear on the exhaust fan 8 itself, maintaining its long-term operating efficiency, but also greatly simplifies the internal cleaning process by centrally collecting carbon dust in a quickly removable pull-out box. During regular maintenance, the pull-out box can be quickly cleaned or replaced, avoiding the complex disassembly and cleaning of the entire carbon collection box 16 or exhaust channel 7, thus directly reducing maintenance workload and time. It enhances the physical control and convenient handling of carbon dust, improves the sustainable performance of the exhaust system, and further reduces the overall frequency of maintenance.

[0039] In this embodiment, preferably, a second filter unit 18 is provided inside the carbon collection box 16. The second filter unit 18 is inclined downward along the gas flow direction of the exhaust channel 7. The second filter unit 18, the exhaust fan 8, and the second valve 9 are arranged sequentially along the airflow direction. The second filter unit 18 can be made of materials such as metal wire mesh, sintered porous plate, or filter felt. It is inclined downward along the gas flow direction of the exhaust channel 7 and arranged sequentially with the exhaust fan 8 and the second valve 9 along the airflow direction. When the airflow containing carbon powder enters the carbon collection box 16, it first passes through the inclined second filter unit 18. This structure not only effectively intercepts fine carbon powder particles, but also its inclined surface causes the captured carbon powder to naturally tend to slide downward under the action of gravity. In addition, under the impact and disturbance of the subsequent continuous airflow, the carbon powder attached to the inclined surface is more likely to fall off and eventually fall into the first receiving cavity 17 below the carbon collection box 16. This design adds a self-cleaning, guiding filter barrier to the primary settling of the carbon collection box 16. This improves the efficiency of capturing fine carbon dust and protects the subsequent exhaust fan 8 and valves from dust wear and performance degradation by delaying the clogging of the filter unit itself. This structure optimizes the entire process of carbon dust capture and collection. Through the combined action of physical guidance and airflow assistance, it maintains the long-term permeability of the filter unit and the high efficiency of the system, thereby reducing maintenance needs caused by filter element clogging or decreased exhaust system efficiency.

[0040] In this embodiment, preferably, the carbon removal device for the collector ring chamber of the wind turbine generator further includes a nozzle 19, which is located at the first air outlet 3 and faces the carbon deposit area between the collector ring and the carbon brush. The installation orientation of the nozzle 19 ensures that its outlet is always facing the contact area between the collector ring and the carbon brush where carbon deposits are easily generated. This structure concentrates and guides the clean, continuous airflow from the first air inlet channel 1, significantly improving the airflow velocity and impact force in the target area, thereby more effectively blowing away and peeling off the loose carbon powder deposits attached to the surface of the collector ring and carbon brush. Through cooperation with the exhaust channel 7, the blown-off carbon powder can be quickly entrained into the directional airflow and discharged. The fixed orientation of the nozzle 19 ensures the continuity and targeting of the cleaning effect, avoids airflow loss and energy waste, and makes the carbon removal process more concentrated and efficient. By optimizing the airflow terminal output form, the physical cleaning capability of the core carbon deposit area is enhanced, thereby directly improving the carbon removal efficiency and speed of the device at the structural level, providing support for reducing the risk of failure and maintenance needs caused by carbon deposits.

[0041] In this embodiment, preferably, the carbon removal device for the wind turbine collector ring chamber further includes a distribution plate 20. The distribution plate 20 is arranged around the inner wall of the collector ring chamber to form a second receiving cavity 21 between the distribution plate 20 and the collector ring chamber. The distribution plate 20 is provided with a plurality of nozzles 19, which are spaced apart on the distribution plate 20, and each nozzle 19 faces the carbon deposit area between the collector ring and the carbon brush. The distribution plate 20 allows the clean airflow entering the second receiving cavity 21 to be evenly distributed to each nozzle 19, and to simultaneously and directionally impact the multiple carbon deposit areas distributed circumferentially on the collector ring and carbon brush in a concentrated manner, thereby achieving all-round synchronous cleaning of the working area. The spaced arrangement of the multiple nozzles 19 ensures that the airflow coverage is without dead angles, effectively avoiding the cleaning blind spots that may exist in a single airflow outlet. The second receiving cavity 21 plays a role in stabilizing pressure and equalizing flow, ensuring the consistency and stability of the airflow dynamics at the outlet of each nozzle 19. The structured airflow distribution significantly improves the efficiency and thoroughness of toner removal per unit time, directly slowing down the formation and accumulation of carbon deposits, thereby reducing the risk of electrical faults caused by localized carbon deposits and the corresponding targeted maintenance needs.

[0042] In this embodiment, preferably, multiple nozzles 19 are distributed at intervals around the axis and circumference of the slip ring. This spatial arrangement allows all nozzles 19 extending from the distribution plate 20 to cover the entire annular area where the slip ring contacts the carbon brush, thereby achieving synchronous and uniform cleaning of all working points on the circumference and effectively eliminating cleaning blind spots that may be caused by uneven distribution of nozzles 19. This improves the thoroughness and efficiency of overall carbon removal and further reduces maintenance requirements caused by localized carbon buildup.

[0043] In this embodiment, preferably, the first air intake channel 1 and the exhaust channel 7 are positioned on opposite sides of the collector ring chamber, with the air intake of the exhaust channel 7 located at the bottom. This relative distribution allows the clean airflow introduced from one side to traverse the entire working area, forming a through-flow active airflow path that effectively sweeps away and carries toner. Simultaneously, the lower exhaust port effectively utilizes the gravity settling tendency of the toner particles, making it easier to capture and guide toner particles carried by the airflow or naturally falling into the exhaust pipe. This dual synergistic effect of airflow drive and gravity settling significantly improves the directional collection and discharge efficiency of toner, minimizing the suspension time and disordered diffusion of toner within the chamber, and preventing its accumulation at the bottom and in corners. By combining physical principles, the dynamic process of toner removal is optimized, thereby fundamentally reducing the cleaning and maintenance requirements caused by toner residue.

[0044] In this embodiment, preferably, the first valve 5, the second valve 9, and the third valve 11 on each channel can all be electrically controlled valves, and their opening and closing operations can be realized remotely through a control system. This allows operators to remotely trigger and execute the backwash cleaning process of the filter unit, or adjust the opening and closing status of each channel as needed, without being physically present at the equipment site. The shift from a local manual mode to a remotely controllable automated mode significantly improves the convenience and response speed of maintenance operations, while reducing direct reliance on personnel arriving on-site.

[0045] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A carbon removal device for a wind power generator slip ring chamber, characterized in that, include: The first air intake channel (1) has a first air inlet (2) for communicating with the external environment and a first air outlet (3) for communicating with the collector ring chamber. The air outlet of the first air intake channel (1) faces the part of the collector ring chamber where carbon is deposited between the collector ring and the carbon brush. The first air intake channel (1) is provided with a first filter unit (4), a first valve (5) and an air intake fan (6). The first filter unit (4), the first valve (5) and the air intake fan (6) are arranged in sequence along the airflow direction. The first filter unit (4) is used to intercept pollutants in the air. The air intake fan (6) is used to guide outside air into the collector ring chamber. The first valve (5) is used to control the opening and closing of the first air intake channel (1). Exhaust passage (7), the exhaust passage (7) is used to connect the collector ring chamber with the external environment, the exhaust passage (7) is provided with an exhaust fan (8) and a second valve (9), the exhaust fan (8) and the second valve (9) are arranged in sequence along the airflow direction, the exhaust fan (8) is used to guide the air in the collector ring chamber to the external environment, and the second valve (9) is used to control the opening and closing of the exhaust passage (7); The cleaning channel (10) has a first end located between the first air inlet (2) and the first valve (5), and the first end of the cleaning channel (10) is connected to the first air inlet channel (1). The second end of the cleaning channel (10) is located between the exhaust fan (8) and the second valve (9), and the second end of the cleaning channel (10) is connected to the exhaust channel (7). The cleaning channel (10) is provided with a third valve (11), which is used to control the opening and closing of the cleaning channel (10).

2. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 1, characterized in that, The exhaust passage (7) is connected to a second air intake passage (12), the second air intake passage (12) is provided with a second air inlet (13), the second air inlet (13) is provided with a one-way valve (14), the one-way valve (14) is used to allow airflow from the external environment to enter the exhaust passage (7).

3. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 2, characterized in that, The diameter of the second air inlet (13) is smaller than the diameter of the exhaust channel (7).

4. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 2, characterized in that, A guide baffle (15) is provided at the connection between the exhaust passage (7) and the second intake passage (12). The guide baffle (15) is positioned toward the second intake passage (12) so that the airflow resistance of the second intake passage (12) is greater than that of the exhaust passage (7).

5. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 1, characterized in that, The exhaust passage (7) is provided with a carbon collection box (16), which is located between the exhaust fan (8) and the collecting ring chamber. The carbon collection box (16) is provided with a first receiving cavity (17), which is used to receive carbon powder.

6. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 5, characterized in that, The carbon collection box (16) is provided with a second filter unit (18). The second filter unit (18) is inclined downward along the gas flow direction of the exhaust channel (7). The second filter unit (18), the exhaust fan (8) and the second valve (9) are arranged in sequence along the air flow direction.

7. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 1, characterized in that, The wind turbine collector ring chamber carbon removal device further includes a nozzle (19), which is located at the first air outlet (3) and faces the part where carbon is deposited between the collector ring and the carbon brush.

8. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 7, characterized in that, The wind turbine collector ring chamber carbon removal device further includes a distribution plate (20), which is arranged around the inner wall of the collector ring chamber to form a second receiving cavity (21) between the distribution plate (20) and the collector ring chamber. The distribution plate (20) is provided with a plurality of nozzles (19), which are spaced apart on the distribution plate (20). Each nozzle (19) is directed toward the part where carbon is deposited between the collector ring and the carbon brush.

9. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 8, characterized in that, The multiple nozzles (19) are distributed at intervals around the axis and circumferentially of the collector ring.

10. The carbon removal device for the collector ring chamber of a wind turbine generator according to claim 1, characterized in that, The first intake channel (1) and the exhaust channel (7) are located on opposite sides of the collector ring chamber, with the intake port of the exhaust channel (7) located below.

Images