A cooling device for a wind turbine

Abstract

This invention relates to the field of generator cooling equipment processing technology, specifically to a cooling device for wind turbine generator sets. The device includes an air inlet pipe, the end of which is connected to the generator set chamber. The air inlet pipe contains a cleaning mechanism and a pressure sensor. This invention uses wind power to push a filter screen filled with accumulated debris. A rack and pinion drive gear rotates, and a rotating shaft causes a cam to rotate. The cam presses against the pressure sensor, which receives the signal and issues a running command to the drive motor. This causes the drive motor to drive the striking component, automatically striking the slider when the airflow to the filter screen decreases due to debris accumulation. This vibration cleans the filter screen, effectively removing stubborn dust and particles, restoring the filter screen's ventilation performance, ensuring the airflow and quality entering the generator set chamber, providing good cooling conditions for the generator set, and improving its operating efficiency.

Description

Technical Field

[0001] This invention relates to the field of generator cooling equipment processing technology, specifically to a cooling device for wind turbine generator sets. Background Technology

[0002] When a wind turbine generates electricity, many internal components rotate at high speed to achieve the power generation function. However, during high-speed operation, heat is inevitably generated by each component, and the faster the component rotates, the more heat is generated. This heat will accumulate continuously in the nacelle of the turbine. If it is not dealt with in time, it will cause serious problems. On the one hand, excessively high temperature will reduce power generation efficiency and affect the normal power generation performance of the wind turbine. On the other hand, being in a high-temperature environment for a long time will shorten the service life of the wind turbine and increase operation and maintenance costs.

[0003] A search revealed Chinese invention patent CN112922796A, which discloses a cooling device for wind turbine generator sets. The device supplies air to the generator set nacelle via a wind box, and the cooling airflow is transported through pipes to the nacelle interior to cool the components. The airflow is then sprayed through an air return pipe to the air intake box outside the nacelle. The incoming return air is filtered through a filter to remove dust and impurities. The purified airflow then re-enters the wind box through the main air intake pipe, forming an internal and external air circulation system for the nacelle. This effectively cools the inside of the wind turbine generator set while preventing dust from entering the nacelle.

[0004] However, in actual use, the filter of the above-mentioned device will gradually become clogged due to the interception of a large amount of dust and particulate matter over a long period of time, resulting in increased air intake resistance, reduced airflow, and consequently affecting cooling efficiency. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a cooling device for wind turbine generator sets, which can effectively solve the problem that the filter screen will gradually become clogged due to the interception of a large amount of dust and particulate matter during long-term use, resulting in a decrease in air intake flow and a reduction in cooling efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a cooling device for a wind turbine generator set, including an air intake pipe. The end of the air intake pipe is connected to the chamber where the generator set is located. A cleaning mechanism and a pressure sensor are provided inside the air intake pipe. The cleaning mechanism includes a slider slidably installed inside the air intake pipe. The slider is engaged with a filter screen for preventing debris from entering the chamber where the generator set is located. A rack is provided on the side of the slider away from the air intake. The rack is meshed with a gear. The gear is sleeved on a rotating shaft. A cam for pressing the pressure sensor is fixedly installed at the top of the rotating shaft. The pressure sensor is communicatively connected to a drive motor. The output end of the drive motor is provided with a striking component for striking the slider. A limiting plate is provided on the inner wall of the air intake pipe. The limiting plate is located on the side of the slider away from the air intake. A return spring is provided between the limiting plate and the slider for resetting the slider.

[0008] Furthermore, the striking assembly includes an active connecting rod fixedly mounted on the output shaft of the drive motor, a driven connecting rod rotatably connected to the end of the active connecting rod, a striking rod for striking the slider rotatably connected to the end of the driven connecting rod, and a guide rail slidably connected to the striking rod, the guide rail being fixedly mounted inside the air intake pipe.

[0009] Furthermore, the intake pipe has a rotating groove and a mounting groove inside, the mounting groove is located above the rotating groove, the rotating shaft is rotatably mounted inside the rotating groove, and the top end of the rotating shaft passes through the rotating groove, and the cam is rotatably mounted inside the mounting groove.

[0010] Furthermore, the inner wall of the air intake pipe is provided with a sliding groove, which is used for the slider to slide linearly along the inner wall of the air intake pipe. The surface of the slider is provided with a limiting block for limiting the return spring, and the limiting plate is provided with the same limiting block on the side near the limiting block.

[0011] Furthermore, the filter screen has an installation hole at its center, and a cleaning rod for cleaning the filter screen is provided on the side of the filter screen near the air inlet. The cleaning rod is fixedly connected to a connecting shaft, and a protrusion is provided at the end of the connecting shaft. A fan blade is provided on the side of the air inlet pipe away from the air inlet. The fan blade is rotatably mounted on a support frame, and the support frame is fixedly mounted on the inner wall of the air inlet pipe. A baffle for driving the connecting shaft to rotate is provided on the side of the fan blade near the slider.

[0012] Furthermore, the support frame is preferably a triangular bracket, the connecting shaft passes through the mounting hole, and the size of the connecting shaft is the same as the size of the mounting hole.

[0013] Furthermore, the cleaning rod is provided with a brush on the side of the filter screen near the filter screen for cleaning the filter screen pores, and the filter screen pores are inclined.

[0014] Furthermore, a first magnet and a second magnet are sleeved on the connecting shaft. The first magnet is located on the side of the filter screen closer to the air inlet, and the second magnet is located on the side of the filter screen away from the air inlet.

[0015] Furthermore, a guide pipe is provided at the bottom of the air inlet pipe, the guide pipe is connected to a debris outlet, a scraper is provided at the bottom of the slider, and a collection box for collecting debris is provided at the bottom of the guide pipe.

[0016] Furthermore, the feed tube is inclined, and the scraper is arc-shaped. The scraper is used to guide debris through the debris outlet and into the feed tube.

[0017] Beneficial effects

[0018] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0019] 1. The filter screen, which is covered with accumulated debris, is driven by wind. The rotation of the filter screen is achieved through the meshing of the rack and pinion gears, which in turn causes the cam to rotate. The cam presses against the pressure sensor, which receives the signal and sends an operating command to the drive motor. This causes the drive motor to drive the striking component, which automatically strikes the slider when the airflow to the filter screen decreases due to debris accumulation. This vibration cleans the filter screen, effectively removing stubborn dust and particles, restoring the filter screen's ventilation performance, ensuring the airflow and quality entering the generator set's chamber, providing good cooling conditions for the generator set, and improving the generator set's working efficiency.

[0020] Second, by setting up a cleaning rod and a brush, when the airflow drives the fan blade to rotate, after the slider moves to a certain position, the baffle on the fan blade abuts against the protrusion on the connecting shaft, and drives the cleaning rod to rotate. The brush brushes off larger particles of debris intercepted on the filter screen, preventing clogging of the filter screen pores. At the same time, the magnetic attraction between the first magnet and the second magnet keeps the cleaning rod in close contact with the surface of the filter screen, ensuring that the cleaning work is continuously and effectively carried out. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the device of the present invention in normal use.

[0023] Figure 2 This is a schematic diagram of the internal structure of the intake pipe of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a partial cross-sectional view of the intake pipe of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 This is a schematic diagram of the cleaning rod structure of the present invention.

[0028] Reference numerals: 1. Inlet pipe; 101. Slide groove; 102. Waste outlet; 103. Guide pipe; 104. Collection box; 105. Rotating groove; 106. Mounting groove; 2. Cleaning mechanism; 201. Slider; 202. Filter screen; 203. Limiting block; 204. Return spring; 205. Limiting plate; 206. Mounting hole; 207. Cleaning rod; 208. First magnet; 209. Second magnet; 210. Connecting shaft; 211. Scraper; 212. Fan blade; 213. Rack; 214. Gear; 215. Rotating shaft; 216. Support frame; 217. Cam; 218. Pressure sensor; 219. Drive motor; 220. Active connecting rod; 221. Driven connecting rod; 222. Striking rod; 223. Guide rail; 224. Brush. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to embodiments.

[0031] A cooling device for wind turbine generator sets, see attached figure. Figure 1-6The system includes an intake pipe 1, the end of which is connected to the generator room. Inside the intake pipe 1 are a cleaning mechanism 2 and a pressure sensor 218. The cleaning mechanism 2 includes a slider 201 slidably mounted inside the intake pipe 1. The slider 201 is engaged with a filter screen 202 to prevent debris from entering the generator room. A rack 213 is located on the side of the slider 201 away from the intake, and the rack 213 is meshed with a gear 214. The gear 214 is mounted on a rotating shaft 215. A cam 217 for pressing the pressure sensor 218 is fixedly mounted on the top of the rotating shaft 215. The pressure sensor 218 is communicatively connected to a drive motor 219. The output end of the drive motor 219 is equipped with a striking component for striking the slider 201. A limiting plate 205 is located on the inner wall of the intake pipe 1, on the side of the slider 201 away from the intake port. Furthermore, a reset spring 204 is provided between the limiting plate 205 and the slider 201 to reset the slider 201. When there is too much debris attached to the surface of the filter screen 202, the wind resistance increases, and the wind force will push the slider 201 and make it slide along the extension direction of the air inlet pipe 1. The slider 201 drives the rack 213 to move synchronously, and the gear 214 rotates through meshing. The gear 214 causes the cam 217 to rotate through the rotating shaft 215. When the cam 217 rotates to a certain angle and is in contact with the pressure sensor 218, the pressure sensor 218 transmits a signal to the drive motor 219 and keeps the drive motor 219 in the open state. The drive motor 219 drives the striking component to strike the slider 201. After the debris on the filter screen 202 is cleaned, the reset spring 204 pushes the slider 201 to reset.

[0032] Furthermore, the striking assembly includes an active connecting rod 220 fixedly mounted on the output shaft of the drive motor 219. A driven connecting rod 221 is rotatably connected to the end of the active connecting rod 220. A striking rod 222 for striking the slider 201 is rotatably connected to the end of the driven connecting rod 221. A guide rail 223 is slidably connected to the striking rod 222. The guide rail 223 is fixedly mounted inside the air intake pipe 1. A rotating groove 105 and a mounting groove 106 are provided inside the air intake pipe 1. The mounting groove 106 is located above the rotating groove 105. A rotating shaft 215 is rotatably mounted inside the rotating groove 105, with its top end passing through the rotating groove 105. A cam 217 is rotatably mounted inside the mounting groove 106. When the filter 2... 02 When the air intake flow decreases due to blockage caused by long-term use and the interception of a large amount of dust and particulate matter, the drive motor 219 receives a signal and starts. The drive motor 219 drives the active connecting rod 220 to rotate, and the driven connecting rod 221 converts the rotational motion into the reciprocating linear motion of the striking rod 222. The striking rod 222 strikes the slider 201, causing the slider 201 to drive the filter screen 202 to vibrate, thereby loosening and removing the debris attached to the surface of the filter screen 202. The filter screen 202 is then cleaned by the cleaning rod and brush, which more effectively removes the stubborn dust and particulate matter, restores the ventilation performance of the filter screen 202, ensures the air flow and quality entering the generator set chamber, and provides good cooling conditions for the generator set.

[0033] Furthermore, a groove 101 is provided on the inner wall of the intake pipe 1. The groove 101 is used for the slider 201 to slide linearly along the inner wall of the intake pipe 1. The surface of the slider 201 is provided with a limiting block 203 for limiting the return spring 204. The limiting plate 205 is provided with the same limiting block 203 on the side near the limiting block 203. When debris accumulates on the surface of the filter screen 202 and the resistance of the airflow through the filter screen 202 increases, the slider 201 moves under the action of the airflow, squeezing the return spring 204 and causing the return spring 204 to undergo elastic deformation. After the debris on the surface of the filter screen 202 is cleaned, the airflow passes smoothly through the filter screen 202. As resistance decreases, the elastic force of the return spring 204 pushes the slider 201 back to its initial position, achieving automatic reset of the slider 201. During the reset process, debris on the guide filter 202 falls onto the scraper 211. When the limiting block 203 on the slider 201 contacts the limiting block 203 on the limiting plate 205, the return spring 204 reaches its maximum compression state. In addition, the two sets of limiting blocks 203 increase the control precision of the movement of the return spring 204 and the slider 201, reduce the probability of failure caused by spring runaway or excessive slider stroke, and improve the reliability and stability of the entire intake system.

[0034] Furthermore, a mounting hole 206 is provided at the center of the filter screen 202. A cleaning rod 207 for cleaning the filter screen 202 is provided on the side of the filter screen 202 near the air inlet. The cleaning rod 207 is fixedly connected to a connecting shaft 210. A protrusion is provided at the end of the connecting shaft 210. A fan blade 212 is provided on the side of the air pipe 1 away from the air inlet. The fan blade 212 is rotatably mounted on the support frame 216. The support frame 216 is fixedly mounted on the inner wall of the air inlet pipe 1. A baffle for driving the connecting shaft 210 to rotate is provided on the side of the fan blade 212 near the slider 201. During installation, the second magnet 209 is sleeved on the connecting shaft 210, the connecting shaft 210 is passed through the mounting hole, and then the first magnet 209 is inserted into the slider 201. Magnet 208 is fitted onto the top of connecting shaft 210, and cleaning rod 207 is fixed to connecting shaft 210 by bolt connection. Cleaning rod 207 is located between first magnet 208 and second magnet 209. When debris accumulates on the surface of filter screen 202, the wind resistance increases, causing filter screen 202 to move away from the air inlet with slider 201. When the baffle on fan blade 212 rotates to a certain angle and abuts against the protrusion on connecting shaft 210, it drives cleaning rod 207 to rotate, thereby further cleaning filter screen 202, ensuring sufficient airflow, providing good cooling conditions for generator set, and improving generator set working efficiency.

[0035] Furthermore, the support frame 216 is a triangular bracket, and the connecting shaft 210 passes through the mounting hole 206. The size of the connecting shaft 210 is the same as the size of the mounting hole 206. The triangular bracket provides a stable support platform for the fan blade 212. When the airflow enters the device, it drives the fan blade 212 to rotate. Throughout the process, the triangular bracket is used to withstand various forces generated by the movement of multiple components, ensuring that the components are stable in position during operation and will not shake or shift due to force, thus ensuring the normal progress of the cleaning work.

[0036] Furthermore, the cleaning rod 207 is provided with a brush 224 on the side of the filter screen 202 near the filter screen 202 for cleaning the filter holes on the surface of the filter screen 202. The filter holes on the surface of the filter screen 202 are set at an angle. When airflow enters the device and the filter screen 202 intercepts impurities in the airflow, when the fan blade 212 drives the connecting shaft 210 and rotates the cleaning rod 207, the brush 224 brushes off the larger particles of impurities intercepted on the filter screen 202 when it comes into contact with the surface of the filter screen 202. This prevents these large particles of impurities from clogging the filter holes on the surface of the filter screen 202, effectively restores the ventilation area of ​​the filter holes, ensures the filtration and ventilation performance of the filter screen 202, provides good cooling conditions for the generator room, and improves the working efficiency of the generator set.

[0037] Furthermore, a first magnet 208 and a second magnet 209 are sleeved on the connecting shaft 210. The first magnet 208 is located on the side of the filter screen 202 closer to the air inlet, and the second magnet 209 is located on the side of the filter screen 202 away from the air inlet. The magnetic attraction between the first magnet 208 and the second magnet 209 generates a continuous pulling force, which ensures that the cleaning rod 207 connected to the connecting shaft 210 is always in close contact with the surface of the filter screen 202. This ensures that the cleaning rod 207 and the brush 224 maintain good contact with the filter screen 202 under the action of magnetic force, so that the cleaning work can be carried out continuously and effectively. Specifically, when the fan blade 212 drives the connecting shaft 210 to rotate, the cleaning component 207 cleans the filter screen 202. During the vibration cleaning process of the driven knocking component, the magnetic force helps to stabilize the connecting shaft 210 on the filter screen 202, so that it can more accurately return to the initial position. This ensures that the cleaning rod 207 always stays in contact with the filter screen 202 during the reciprocating motion, improving the cleaning accuracy.

[0038] Furthermore, a guide pipe 103 is provided at the bottom of the air intake pipe 1, and the guide pipe 103 is connected to a debris outlet 102. A scraper 211 is provided at the bottom end of the slider 201, and a collection box 104 for collecting debris is provided at the bottom end of the guide pipe 103. The guide pipe 103 is inclined, and the scraper 211 is arc-shaped. The scraper 211 is used to guide debris through the debris outlet 102 and into the guide pipe 103. The debris outlet 102 is the channel for debris to leave the air intake pipe 1. When 204 is reset... The spring pushes the slider 201 to reset. After the scraper 211 guides the debris to the debris outlet 102, the debris, with the help of its own gravity and the tilt angle of the guide pipe 103, slides down the guide pipe 103 more smoothly. The debris is guided smoothly from the inside of the air inlet pipe 1 to the collection box 104 located at the bottom of the guide pipe 103, ensuring that the debris can be discharged from the air inlet pipe 1 in an orderly manner, without scattering or accumulating again in the air inlet pipe 1, thus ensuring the continuity and efficiency of the debris discharge process.

[0039] Working principle: During use, when airflow enters the intake pipe 1, it is filtered by the cleaning mechanism 2 to ensure the cleanliness of the generator room. Specifically, impurities in the airflow are intercepted by the filter screen 202. After a period of time, the filter screen 202 will gradually become clogged due to the interception of a large amount of dust and particulate matter, causing the intake flow to decrease. At this time, the wind force will push the slider 201 and make the slider 201 slide along the extension direction of the intake pipe 1. The slider 201 drives the rack 213 to move synchronously, and through meshing, it makes the gear 214 rotate. The gear 214 causes the cam 217 to rotate through the rotating shaft 215. When the cam 217 rotates to a certain angle and interacts with the compression pressure sensor... When device 218 is activated, pressure sensor 218 transmits a signal to drive motor 219, keeping drive motor 219 in the OFF state. Drive motor 219 drives active connecting rod 220 to rotate via its output shaft, and through driven connecting rod 221 causes tapping rod 222 to reciprocate linearly along guide rail 223, thereby tapping filter screen 202 and generating vibration, which further cleans the surface of filter screen 202. At the same time, airflow drives fan blade 212 to rotate as airflow passes through intake pipe 1. When debris accumulates on the surface of filter screen 202, the air resistance increases, causing filter screen 202 to move away from the air inlet with slider 201. When fan blade 21... The baffle on the 2nd plate rotates to a certain angle and abuts against the protrusion on the connecting shaft 210, thereby driving the cleaning rod 207 to rotate and clean the filter screen 202. The fan blade 212 cleans the filter screen 202 through the connecting shaft 210, and the brush 224 on the surface of the cleaning rod 207 further cleans the filter screen 202. While the slider 201 slides, the return spring 204 is compressed and deformed to store force for the slider 201 to return. When the limiting block 203 on the slider 201 contacts the limiting block 203 on the limiting plate 205, the return spring 204 is compressed to its maximum value. At the same time, due to the first magnet 208 and the second magnet The magnetic attraction between the iron bars 209 keeps the cleaning rod 207 in contact with the surface of the filter screen 202. When the debris on the filter screen 202 is cleaned, the return spring 204 returns to its original shape, pushing the filter screen 202 back to its initial position. The slider 201 drives the scraper 211 to guide the falling debris, allowing it to pass smoothly through the debris outlet 102 and the guide pipe 103, and finally enter the collection box 104. The collection box 104 is removed and cleaned periodically. At the same time, the cam 217 rotates in the opposite direction, and the pressure on the cam 217 is released, causing the drive motor 219 to stop running, thus achieving self-cleaning. Meanwhile, it ensures that the airflow effectively cools the chamber where the generator set is located.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling device for wind turbine generator sets, characterized in that, The system includes an intake pipe (1), the end of which is connected to the generator room. The intake pipe (1) contains a cleaning mechanism (2) and a pressure sensor (218). The cleaning mechanism (2) includes a slider (201) slidably mounted inside the intake pipe (1). The slider (201) is engaged with a filter screen (202) to prevent debris from entering the generator room. A rack (213) is located on the side of the slider (201) away from the intake. The rack (213) is meshed with a gear (214), which is mounted on a rotating shaft (215). On the rotating shaft (215), a cam (217) for squeezing pressure sensor (218) is fixedly installed at the top end. The pressure sensor (218) is communicatively connected to a drive motor (219). The output end of the drive motor (219) is provided with a striking component for striking the slider (201). A limiting plate (205) is provided on the inner wall of the air inlet pipe (1). The limiting plate (205) is located on the side of the slider (201) away from the air inlet. A reset spring (204) for resetting the slider (201) is provided between the limiting plate (205) and the slider (201). The striking assembly includes an active connecting rod (220) fixedly mounted on the output shaft of a drive motor (219), a driven connecting rod (221) rotatably connected to the end of the active connecting rod (220), a striking rod (222) for striking the slider (201) rotatably connected to the end of the driven connecting rod (221), and a striking rod (222) for striking the slider (201) slidably connected to a guide rail (223), which is fixedly mounted inside the air intake pipe (1). The intake pipe (1) has a rotating groove (105) and a mounting groove (106) inside. The mounting groove (106) is located above the rotating groove (105). The rotating shaft (215) is rotatably mounted inside the rotating groove (105), and the top end of the rotating shaft (215) passes through the rotating groove (105). The cam (217) is rotatably mounted inside the mounting groove (106). The inner wall of the air intake pipe (1) is provided with a sliding groove (101). The sliding groove (101) is used for the slider (201) to slide linearly along the inner wall of the air intake pipe (1). The surface of the slider (201) is provided with a limiting block (203) for limiting the return spring (204). The limiting plate (205) is provided with the same limiting block (203) on the side close to the limiting block (203). The filter screen (202) has an installation hole (206) at its center. The filter screen (202) has a cleaning rod (207) for cleaning the filter screen (202) on the side near the air inlet. The cleaning rod (207) is fixedly connected to a connecting shaft (210). The end of the connecting shaft (210) has a protrusion. The air inlet pipe (1) has a fan blade (212) on the side away from the air inlet. The fan blade (212) is rotatably mounted on a support frame (216). The support frame (216) is fixedly mounted on the inner wall of the air inlet pipe (1). The fan blade (212) has a baffle for driving the connecting shaft (210) to rotate on the side near the slider (201). A first magnet (208) and a second magnet (209) are sleeved on the connecting shaft (210). The first magnet (208) is located on the side of the filter screen (202) closer to the air inlet, and the second magnet (209) is located on the side of the filter screen (202) away from the air inlet.

2. A cooling device for a wind turbine generator set according to claim 1, characterized in that, The support frame (216) is a triangular bracket, and the connecting shaft (210) passes through the mounting hole (206), and the size of the connecting shaft (210) is the same as the size of the mounting hole (206).

3. A cooling device for a wind turbine generator set according to claim 2, characterized in that, The cleaning rod (207) has a brush (224) on the side of the filter screen (202) for cleaning the filter holes on the surface of the filter screen (202), and the filter holes on the surface of the filter screen (202) are set at an angle.

4. A cooling device for a wind turbine generator set according to claim 3, characterized in that, The bottom of the air inlet pipe (1) is provided with a guide pipe (103), the guide pipe (103) is connected to a debris outlet (102), the bottom end of the slider (201) is provided with a scraper (211), and the bottom end of the guide pipe (103) is provided with a collection box (104) for collecting debris.

5. A cooling device for a wind turbine generator set according to claim 4, characterized in that, The feed tube (103) is inclined, and the scraper (211) is arc-shaped. The scraper (211) is used to guide the debris through the debris outlet (102) and into the feed tube (103).

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