A cooling circuit for a wind turbine

Abstract

The present invention relates to the technical field of wind turbine cooling, and discloses a wind turbine cooling circuit, including a nacelle, a tower, a hub and a cooling mechanism, wherein the nacelle is fixedly connected to the top of the tower, a generator assembly is fixedly connected inside the nacelle, and the generator assembly is connected to the hub via a rotating shaft. Through the design of the cooling mechanism, the fan assembly inhales external airflow when working, and the airflow passes through the first pipe, the adapter frame, and the second pipe in sequence to enter the second annular frame, and then passes through the second connecting pipe to enter the first air intake frame, and is discharged from the first air intake frame to the inside of the hub to dissipate heat and cool the hub, and then the airflow passes through the first annular frame and the first connecting pipe in sequence to enter the nacelle, at which time the inside of the nacelle can be properly dissipated, so that fast and efficient cooling can be performed, and the structural design is simple, which improves the convenience of production, manufacturing, installation and use.

Description

Technical Field

[0001] The invention relates to the technical field of wind generator cooling, and in particular to a wind generator cooling circuit. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. During the wind power generation process, losses occur in the process of converting mechanical energy into electrical energy. This energy is converted into heat energy, causing the temperature of the generator and other related electronic equipment to rise. In order to ensure the stable operation of the equipment and extend its service life, effective cooling measures are needed for the wind turbine.

[0003] The Chinese patent with the publication number CN109139396B proposes a cooling system and a cooling method for a wind turbine generator set and a wind turbine generator, including: a main bearing heat dissipation system for dissipating heat from a main bearing of a generator set in a wind turbine generator set, and the main bearing heat dissipation system includes: an inner radiator, which is arranged in the rotating shaft of the main bearing; a rotating pipe, one end of which moves synchronously with the inner radiator and transmits a coolant for cooling the inner radiator to the inner radiator; and an outer radiator, which is connected to the other end of the rotating pipe, and is used to cool the coolant flowing in through the rotating pipe. By using the rotating pipe of the main bearing to replace the fixed pipe in the liquid cooling radiator in the prior art, the liquid cooling radiator can also be used to dissipate heat from the rotating shaft in a moving state, which solves the problem that the heat dissipation device in the prior art that dissipates heat from the main bearing by disposing a liquid cooling radiator at a fixed position near the main bearing such as the stator bracket cannot directly dissipate heat from the inner ring of the inner rotating shaft main bearing inevitably has a poor heat dissipation effect.

[0004] When the above device cools the wind turbine, in order to improve the cooling effect, multiple groups of radiators are added to cooperate. The structural composition is relatively complex, and the energy consumption generated by the heat dissipation work is also large. Secondly, in order to cooperate with the use of refrigerants, multiple groups of pipes need to be added for matching use. There is also a complex layout, which increases the pressure on the erection work. Summary of the invention

[0005] In order to solve the above-mentioned problems, the present invention provides a cooling circuit for a wind turbine generator.

[0006] A wind turbine cooling circuit provided by the present invention adopts the following technical solution:

[0007] A wind turbine cooling circuit comprises a nacelle, a tower, a hub and a cooling mechanism, wherein the nacelle is fixedly connected to the top of the tower, a generator assembly is fixedly connected inside the nacelle, and the generator assembly is connected to the hub via a rotating shaft;

[0008] The cooling mechanism includes a frame, an adapter frame and a first air intake frame, the frame is fixedly connected to a side wall of the cabin, the adapter frame is arranged on the outside of the tower, the first air intake frame is fixedly connected to the inside of the wheel hub, a fan assembly is fixedly connected to the inside of the frame, a first pipe is fixedly connected between the frame and the adapter frame, a first mounting seat and a second mounting seat are fixedly connected to one side of the wheel hub, a first annular frame and a second annular frame are connected to one side of the first mounting seat and the second mounting seat respectively through a sealing bearing, a second air intake frame is fixedly connected to a side wall of the cabin inner cavity, a second pipe is fixedly connected between the adapter frame and the second annular frame, a first connecting pipe is fixedly connected between the first annular frame and the cabin, a second connecting pipe is fixedly connected to the bottom of the first air intake frame, and one end of the second connecting pipe is fixedly connected to a side wall of the wheel hub inner cavity.

[0009] By adopting the above technical solution, when the wind turbine is working, the fan assembly sucks in the external airflow, and after being sucked in, the airflow passes through the first pipe, the adapter frame, and the second pipe in sequence and enters the second annular frame, and then passes through the second connecting pipe and enters the first air intake frame, and is discharged from the first air intake frame into the interior of the hub to dissipate heat and cool the hub, and then the airflow passes through the first annular frame and the first connecting pipe in sequence and enters the interior of the cabin, at which time the interior of the cabin can be properly dissipated, so that fast and efficient cooling can be performed, and the structural design is simple, which is more conducive to improving the convenience of production, manufacturing, installation and use.

[0010] Preferably, the first connecting pipe is respectively connected to the second air intake frame and the first annular frame, the second annular frame is respectively connected to the second connecting pipe and the second pipeline, and a hole groove is opened on one side wall of the hub, and the hole groove is connected to the first mounting seat.

[0011] By adopting the above technical solution, the airflow after heat dissipation is finally discharged to the outside through the holes and grooves.

[0012] Preferably, a first heat dissipation hole is opened on one side wall of the first air intake frame, a second heat dissipation hole is opened on one side wall of the second air intake frame, a first guide frame is fixedly connected to one side wall of the first air intake frame, and a second guide frame is fixedly connected to one side wall of the second air intake frame.

[0013] By adopting the above technical solution, the airflow inside the first air intake frame and the second air intake frame is discharged through the first heat dissipation hole and the second heat dissipation hole.

[0014] Preferably, a positioning rod is fixedly connected to the top of the adapter frame, the positioning rod is fixedly connected to the bottom of the cabin, an exhaust hole is opened on one side wall of the cabin, an inclined frame is fixedly connected to one side wall of the cabin, and the inclined frame is arranged on the outside of the exhaust hole, a first fixing rod is fixedly connected between the first annular frame and the cabin, and a second fixing rod is fixedly connected between the second annular frame and the cabin.

[0015] By adopting the above technical solution, the airflow discharge end opening of the inclined frame is tilted downward, which can prevent external moisture and other impurities from entering the cabin through the exhaust hole.

[0016] Preferably, the cooling mechanism includes a protective component, which includes a processing frame and a protective frame, the protective frame is fixedly connected to one side of the cabin, the protective frame is arranged on the outside of the frame body, a rectangular groove is opened on one side wall of the frame body, a drainage groove is opened on the top of the protective frame, the processing frame is fixedly connected to one side wall of the frame body, a filter screen is fixedly connected to one side wall of the processing frame, a through groove is opened on the other side wall of the processing frame, a movable plate is arranged on the top of the frame body, a limiting plate is fixedly connected to the top of the frame body, the limiting plate passes through the movable plate, a first electric push rod is fixedly connected to one side of the movable plate, and one end of the limiting plate and the first electric push rod are both fixedly connected to one side wall of the cabin.

[0017] By adopting the above technical solution, the protective frame can provide protection for the entire frame and the outside of the processing frame, reducing the possibility of external rainwater intrusion and increasing the possibility of moisture entering the interior of the cabin.

[0018] Preferably, two partitions are fixedly connected inside the processing frame, and a first round rod and a second round rod are rotatably connected inside the processing frame, the first round rod extends out of the processing frame, a U-shaped plate is fixedly connected to the front side of the processing frame, a cotton belt is provided inside the processing frame, the first round rod and the second round rod both penetrate the cotton belt and fit with the inner side of the cotton belt, the cotton belts penetrate the two partitions respectively, a heating tube is fixedly connected to one side wall of the inner cavity of the processing frame, a first gear is fixedly connected to the outside of the first round rod, a first motor is fixedly connected to the front side of the U-shaped plate, the first motor is fixedly connected to the second gear through the output shaft, and the second gear is meshed with the first gear.

[0019] By adopting the above technical solution, the first motor drives the second gear to rotate after it starts working, and the rotation of the second gear can drive the first gear to rotate.

[0020] Preferably, a mounting plate is fixedly connected to the outer side of the processing frame, a threaded rod is rotatably connected to the inner side of the mounting plate, a threaded block is slidably connected to the inner side of the mounting plate, the threaded rod penetrates the threaded block and is threadedly connected to the threaded block, a brush plate is fixedly connected to one side of the threaded block, one side of the brush plate contacts one side of the filter screen, a second motor is fixedly connected to the front side of the mounting plate, the second motor is fixedly connected to the threaded rod via an output shaft, two scrapers are fixedly connected to the inner side of the mounting plate, and the two scrapers are respectively arranged on the front and rear sides of the processing frame.

[0021] By adopting the above technical solution, the filter net can filter the airflow when it passes through, and the brush plate can brush away the impurities adsorbed on the filter net when it moves.

[0022] Preferably, a horizontal plate is fixedly connected to one side wall of the processing frame, a baffle is arranged at the bottom of the horizontal plate, the baffle is in contact with the outer side wall of the processing frame, a guide rod is fixedly connected to the top of the baffle, the guide rod passes through the horizontal plate, one side of the movable plate is movably connected to a first push-pull rod through a movable hinge seat, and one end of the first push-pull rod is movably connected to the baffle through a movable hinge seat.

[0023] By adopting the above technical solution, the guide rod provides a limiting effect on the baffle, which can improve the stability of the baffle when it is raised or lowered.

[0024] Preferably, temperature sensors are fixedly connected to the top of the first air intake frame and the bottom of the cabin cavity, and a warning mechanism is provided on the adapter frame, which includes a lamp holder, which is provided at the bottom of the adapter frame, a lamp body is fixedly connected to the lamp holder, and the lamp body is electrically connected to the temperature sensor, vertical plates are provided on both sides of the lamp holder, and the vertical plates are fixedly connected to the bottom of the adapter frame, and connecting rods are rotatably connected between adjacent vertical plates, and the connecting rods pass through the lamp holder and are fixedly connected to the lamp holder, a positioning plate is fixedly connected to the outside of the adapter frame, an auxiliary groove is provided on the tower, and a lifting plate is provided on the outside of the tower, and the lifting plate passes through the auxiliary groove and matches the auxiliary groove, a second electric push rod is fixedly connected to the inside of the auxiliary groove, the second electric push rod is electrically connected to the temperature sensor, and the top of the second electric push rod is fixedly connected to the bottom of the lifting plate.

[0025] By adopting the above technical solution, two temperature sensors respectively detect the temperature inside the rear wheel hub of the nacelle. When the temperature inside the two is too high and an abnormal situation occurs, the light body starts to flash to warn the outside world.

[0026] Preferably, the positioning plate is slidably connected to a control plate on the outside, a rack is fixedly connected to the bottom of the control plate, a third gear is fixedly connected to the outside of the connecting rod, the third gear is arranged at the bottom of the rack, and the third gear is meshed with the rack, a second push-pull rod is arranged between the lifting plate and the control plate, and both ends of the second push-pull rod are respectively movably connected to the lifting plate and the control plate through movable hinges.

[0027] By adopting the above technical solution, when the rack moves, it can drive the third gear to rotate, and then prompt the connecting rod to drive the lamp holder to swing with the connecting rod as the axis.

[0028] In summary, the present invention includes the following beneficial technical effects:

[0029] A cooling circuit for a wind turbine generator, through the design of a cooling mechanism, a fan assembly sucks in external airflow when working, the airflow passes through a first pipe, a transfer frame, and a second pipe in sequence to enter a second annular frame, then passes through a second connecting pipe to enter a first air intake frame, and is discharged from the first air intake frame into the interior of a hub to dissipate heat and cool the hub, then the airflow passes through the first annular frame and the first connecting pipe in sequence to enter the interior of a cabin, at which time the interior of the cabin can be properly dissipated, thereby enabling fast and efficient cooling work, and the structural design is simple, thereby improving the convenience of production, manufacturing, installation and use.

[0030] A cooling circuit for a wind turbine generator, through the design of a protective component, when the gas passes through a filter, the filter can filter out impurities contained in the gas, and in order to prevent moisture in the gas from entering the cabin and the inside of the hub, the cotton belt can absorb the moisture in the gas, thereby ensuring the dryness of the gas, and at the same time, after the heating tube is energized, a drying operation can be performed on the relatively moist cotton belt area on one side thereof, thereby ensuring the moisture adsorption performance and improving the stability and safety of the cooling work.

[0031] A cooling circuit of a wind turbine generator has a warning mechanism designed so that when the temperature on the top of a first air intake frame and inside a cabin becomes abnormal, the lamp body is powered on and lights up, and the second electric push rod works to push, pull and lift the lifting plate. At this time, the connecting rod drives the lamp holder to swing with the connecting rod as the axis, so that the lamp body can be controlled to swing repeatedly to adjust its illumination angle. In the process of the continuous swinging and shaking of the lamp body, the attention of outside staff is further attracted, so that they can take measures and further improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 is a cross-sectional view of the structure of the present invention;

[0034] Figure 3 for Figure 2 A in the enlarged view;

[0035] Figure 4 It is a rear view of the present invention;

[0036] Figure 5 for Figure 4 The enlarged view of point B in the figure;

[0037] Figure 6 It is a cross-sectional structural diagram of the protection frame in the present invention;

[0038] Figure 7 It is a top view of the structure of the processing frame in the present invention;

[0039] Figure 8 for Figure 7 The enlarged view of point C in the figure;

[0040] Fig. 9 It is a structural cross-sectional view of the processing frame in the present invention;

[0041] Fig.10 for Fig. 9 The enlarged view of point D in the figure;

[0042] Fig.11 It is a structural cross-sectional view of the adapter frame in the present invention;

[0043] Fig.12 for Fig.11 The enlarged view of point E in the figure;

[0044] Fig.13 It is a cross-sectional structural diagram of the first air intake frame in the present invention.

[0045] Description of the accompanying drawings: 1, cabin; 2, tower; 3, hub; 4, cooling mechanism; 41, frame; 42, adapter frame; 43, first air intake frame; 44, fan assembly; 45, first pipeline; 46, first mounting seat; 47, second mounting seat; 48, first annular frame; 49, second annular frame; 491, second air intake frame; 492, second pipeline; 493, first connecting pipe; 494, second connecting pipe; 495, hole groove; 496, first heat dissipation hole; 497, second heat dissipation hole; 498, first guide frame; 499, second guide frame; 481, inclined frame; 482, first fixing rod; 483, second fixing rod; 484, processing frame; 485, protective frame; 486, drainage groove; 487, filter screen; 488, through groove; 489, movable plate; 471 , limit plate; 472, first electric push rod; 473, partition; 474, first round rod; 475, second round rod; 476, U-shaped plate; 477, cotton belt; 478, heating tube; 479, first gear; 461, first motor; 462, second gear; 463, mounting plate; 464, threaded rod; 465, threaded block; 466, brush plate; 467, second motor; 468, horizontal plate; 469, baffle; 451, first push-pull rod; 452, scraper; 5, generator assembly; 6, temperature sensor; 7, warning mechanism; 71, lamp holder; 72, lamp body; 73, vertical plate; 74, connecting rod; 75, positioning plate; 76, lifting plate; 77, second electric push rod; 78, control board; 79, rack; 791, third gear; 792, second push-pull rod. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-Figure 13 The present invention is described in further detail.

[0047] The present invention discloses a cooling circuit for a wind turbine generator. Figure 1-Figure 13 A wind turbine cooling circuit includes a nacelle 1, a tower 2, a hub 3 and a cooling mechanism 4, wherein the nacelle 1 is fixedly connected to the top of the tower 2, a generator assembly 5 is fixedly connected inside the nacelle 1, and the generator assembly 5 is connected to the hub 3 through a rotating shaft;

[0048] The cooling mechanism 4 includes a frame body 41, an adapter frame 42 and a first air intake frame 43. The frame body 41 is fixedly connected to a side wall of the cabin 1, the adapter frame 42 is arranged on the outside of the tower 2, the first air intake frame 43 is fixedly connected to the inside of the hub 3, a fan assembly 44 is fixedly connected to the inside of the frame body 41, a first pipe 45 is fixedly connected between the frame body 41 and the adapter frame 42, a first mounting seat 46 and a second mounting seat 47 are fixedly connected to one side of the hub 3, and a first annular frame 48 and a second annular frame 49 are connected to one side of the first mounting seat 46 and the second mounting seat 47 through a sealing bearing, respectively, a second air intake frame 491 is fixedly connected to a side wall of the inner cavity of the cabin 1, a second pipe 492 is fixedly connected between the adapter frame 42 and the second annular frame 49, and a first connecting pipe 493 is fixedly connected between the first annular frame 48 and the cabin 1;

[0049] A second connecting pipe 494 is fixedly connected to the bottom of the first air intake frame 43, and one end of the second connecting pipe 494 is fixedly connected to a side wall of the inner cavity of the hub 3. When the wind turbine is working, the fan assembly 44 sucks in external airflow. After being sucked in, the airflow passes through the first pipe 45, the adapter frame 42, and the second pipe 492 in sequence and enters the second annular frame 49, and then passes through the second connecting pipe 494 to enter the first air intake frame 43, and is discharged from the first air intake frame 43 into the interior of the hub 3 to dissipate heat and cool the hub 3. Then, the airflow passes through the first annular frame 48 and the first connecting pipe 493 in sequence and enters the interior of the cabin 1. At this time, the interior of the cabin 1 can be properly cooled, so that fast and efficient cooling can be performed, and the structural design is simple, which is more conducive to improving the convenience of production, manufacturing, installation and use.

[0050] The first connecting pipe 493 is connected to the second air intake frame 491 and the first annular frame 48 respectively, the second annular frame 49 is connected to the second connecting pipe 494 and the second pipe 492 respectively, a hole groove 495 is provided on one side wall of the hub 3, the hole groove 495 is connected to the first mounting seat 46, and the airflow after heat dissipation is finally discharged to the outside through the hole groove 495, a first heat dissipation hole 496 is provided on one side wall of the first air intake frame 43, a second heat dissipation hole 497 is provided on one side wall of the second air intake frame 491, a first guide frame 498 is fixedly connected to one side wall of the first air intake frame 43, and a second guide frame 499 is fixedly connected to one side wall of the second air intake frame 491, and the airflow inside the first air intake frame 43 and the second air intake frame 491 is discharged through the first heat dissipation hole 496 and the second heat dissipation hole 497;

[0051] A positioning rod is fixedly connected to the top of the adapter frame 42, and the positioning rod is fixedly connected to the bottom of the cabin 1. An exhaust hole is opened on one side wall of the cabin 1, and an inclined frame 481 is fixedly connected to one side wall of the cabin 1. The inclined frame 481 is arranged outside the exhaust hole, a first fixed rod 482 is fixedly connected between the first annular frame 48 and the cabin 1, and a second fixed rod 483 is fixedly connected between the second annular frame 49 and the cabin 1. The airflow discharge end opening of the inclined frame 481 is tilted downward to prevent external moisture and other impurities from entering the interior of the cabin 1 through the exhaust hole.

[0052] The cooling mechanism 4 includes a protection component, which includes a processing frame 484 and a protection frame 485. The protection frame 485 is fixedly connected to one side of the cabin 1, and the protection frame 485 is arranged on the outside of the frame body 41. A rectangular groove is provided on one side wall of the frame body 41, and a drainage groove 486 is provided on the top of the protection frame 485. The processing frame 484 is fixedly connected to one side wall of the frame body 41, and a filter screen 487 is fixedly connected to one side wall of the processing frame 484. A through groove 488 is provided on the other side wall of the processing frame 484. A movable plate 489 is provided on the top of the frame body 41. A limiting plate 471 is fixedly connected to the top of the frame body 41, and the limiting plate 471 passes through the movable plate 489. A first electric push rod 472 is fixedly connected to one side of the movable plate 489. One end of the limiting plate 471 and the first electric push rod 472 are both fixedly connected to one side wall of the cabin 1. The protection frame 485 can provide protection for the entire frame body 41 and the outside of the processing frame 484, reduce the possibility of external rainwater intrusion and increase the possibility of moisture entering the cabin 1.

[0053] Two baffles 473 are fixedly connected inside the processing frame 484, a first round rod 474 and a second round rod 475 are rotatably connected inside the processing frame 484, the first round rod 474 extends outside the processing frame 484, a U-shaped plate 476 is fixedly connected to the front side of the processing frame 484, a cotton belt 477 is arranged inside the processing frame 484, the first round rod 474 and the second round rod 475 both penetrate the cotton belt 477 and fit with the inner side of the cotton belt 477, and the cotton belt 477 penetrates the two baffles 473 respectively. 73, a heating tube 478 is fixedly connected to one side wall of the inner cavity of the processing frame 484, a first gear 479 is fixedly connected to the outside of the first round rod 474, a first motor 461 is fixedly connected to the front side of the U-shaped plate 476, the first motor 461 is fixedly connected to the second gear 462 through the output shaft, the second gear 462 is meshed with the first gear 479, the first motor 461 drives the second gear 462 to rotate after working, and the second gear 462 can drive the first gear 479 to rotate after rotating;

[0054] A mounting plate 463 is fixedly connected to the outside of the processing frame 484, a threaded rod 464 is rotatably connected to the inside of the mounting plate 463, a threaded block 465 is slidably connected to the inside of the mounting plate 463, the threaded rod 464 penetrates the threaded block 465 and is threadedly connected to the threaded block 465, a brush plate 466 is fixedly connected to one side of the threaded block 465, one side of the brush plate 466 contacts one side of the filter screen 487, a second motor 467 is fixedly connected to the front side of the mounting plate 463, the second motor 467 is fixedly connected to the threaded rod 464 through an output shaft, two scrapers 452 are fixedly connected to the inside of the mounting plate 463, the two scrapers 452 are respectively arranged on the front and rear sides of the processing frame 484, the filter screen 487 can filter the airflow when it passes through, and the brush plate 466 can brush away the impurities adsorbed on the filter screen 487 when moving;

[0055] A horizontal plate 468 is fixedly connected to one side wall of the processing frame 484, and a baffle 469 is arranged at the bottom of the horizontal plate 468. The baffle 469 contacts the outer side wall of the processing frame 484, and a guide rod is fixedly connected to the top of the baffle 469. The guide rod passes through the horizontal plate 468. One side of the movable plate 489 is movably connected to the first push-pull rod 451 through a movable hinge seat, and one end of the first push-pull rod 451 is movably connected to the baffle 469 through a movable hinge seat. The guide rod provides a limiting effect on the baffle 469, which can improve its stability when the baffle 469 is raised or lowered.

[0056] The top of the first air intake frame 43 and the bottom of the inner cavity of the cabin 1 are fixedly connected with a temperature sensor 6. The adapter frame 42 is provided with a warning mechanism 7, which includes a lamp holder 71, which is arranged at the bottom of the adapter frame 42. A lamp body 72 is fixedly connected to the lamp holder 71, and the lamp body 72 is electrically connected to the temperature sensor 6. Vertical plates 73 are arranged on both sides of the lamp holder 71, and the vertical plates 73 are fixedly connected to the bottom of the adapter frame 42. A connecting rod 74 is rotatably connected between adjacent vertical plates 73, and the connecting rod 74 passes through the lamp holder 71 and is fixedly connected to the lamp holder 71. A positioning plate 75 is fixedly connected to the side, an auxiliary groove is opened on the tower 2, and a lifting plate 76 is arranged on the outer side of the tower 2. The lifting plate 76 passes through the auxiliary groove and matches the auxiliary groove. A second electric push rod 77 is fixedly connected inside the auxiliary groove. The second electric push rod 77 is electrically connected to the temperature sensor 6. The top of the second electric push rod 77 is fixedly connected to the bottom of the lifting plate 76. The two temperature sensors 6 respectively detect the temperature inside the rear wheel hub 3 of the nacelle 1. When the temperature inside the two is too high and there is an abnormal situation, the lamp body 72 starts to flash to warn the outside world;

[0057] The positioning plate 75 is slidably connected to the outside of the control plate 78, and a rack 79 is fixedly connected to the bottom of the control plate 78. The connecting rod 74 is fixedly connected to the outside of the third gear 791, and the third gear 791 is arranged at the bottom of the rack 79, and the third gear 791 is meshed with the rack 79. A second push-pull rod 792 is arranged between the lifting plate 76 and the control plate 78. The two ends of the second push-pull rod 792 are respectively movably connected to the lifting plate 76 and the control plate 78 through movable hinges. When the rack 79 moves, it can drive the third gear 791 to rotate, and then prompt the connecting rod 74 to drive the lamp holder 71 to swing with the connecting rod 74 as the axis.

[0058] In actual operation, when the device is used, the device is first powered on. The first annular frame 48 is connected to the first mounting seat 46 via a sealed bearing, and the second annular frame 49 is connected to the second mounting seat 47 via a sealed bearing. At this time, the first annular frame 48 and the second annular frame 49 can rotate on the first mounting seat 46 and the second mounting seat 47 respectively, so that the stability of the first connecting pipe 493 and the second pipe 492 can be ensured when the wheel hub 3 rotates.

[0059] When the wind turbine is working and needs to perform cooling work, the fan assembly 44 sucks in the external airflow after working. After the airflow enters the frame 41, it passes through the first pipe 45, the adapter frame 42, and the second pipe 492 in sequence and then enters the second annular frame 49, and then enters the first air intake frame 43 through the second connecting pipe 494, and finally is discharged into the hub 3 through the first heat dissipation hole 496 to cool and dissipate the heat of the hub 3. The above airflow enters the first mounting seat 46 through the hole groove 495 during the flow process, and the airflow in the first mounting seat 46 enters the second air intake frame 491 through the first connecting pipe 493, and enters the cabin 1 through the second air intake frame 491 to perform air cooling and heat dissipation on the cabin 1. The heat-dissipated gas is finally discharged through the exhaust hole. At this time, the inclined frame 481 can provide protection for the exhaust hole, and because the opening of its exhaust end is at the bottom, it can play a certain role in dustproof and water splashproof;

[0060] The gas entering the first air intake frame 43 and the second air intake frame 491 is discharged through the first heat dissipation hole 496 and the second heat dissipation hole 497 respectively. During this period, when the gas in the first heat dissipation hole 496 and the second heat dissipation hole 497 in the first guide frame 498 and the second guide frame 499 is discharged, the gas is guided by the first guide frame 498 and the second guide frame 499, and flows outward, thereby achieving the purpose of diffusing the gas outward, improving the heat dissipation effect, increasing the diameter range of the gas flowing inside the nacelle 1 and the hub 3, and improving the cooling efficiency;

[0061] When the above cooling work is carried out, the gas enters through the filter 487, and when passing through the filter 487, the filter 487 can filter the impurities contained in the gas. In addition to filtering the impurities in the gas, in rainy weather, in order to prevent the moisture in the gas from entering the cabin 1 and the hub 3 and causing adverse effects on the internal equipment, the gas will first pass through the cotton belt 477 when entering the processing frame 484, and the cotton belt 477 can absorb the moisture in the gas to ensure the dryness of the gas. In order to avoid the cotton belt 477 from absorbing too much moisture and affecting its drying performance, the first motor 461 drives the second gear 462 to rotate through the output shaft after working, the second gear 462 drives the first gear 479 to rotate, and the first gear 479 drives the first round rod 4 74 rotates, the first round rod 474 drives the cotton belt 477 to rotate, so as to adjust the contact surface between the cotton belt 477 and the airflow on one side of the filter screen 487, and the heating tube 478 is energized to heat, and the relatively humid cotton belt 477 area staying on one side thereof can be dried. During this period, the first electric push rod 472 pushes the movable plate 489, and the movable plate 489 drives the first push-pull rod 451 to flip, and the first push-pull rod 451 pushes the baffle 469 after flipping, and at this time, the baffle 469 starts to move downward until it does not block the through slot 488, and the water vapor generated by the heating of the cotton belt 477 is discharged through the through slot 488, and when not drying, the baffle 469 is controlled to block the through slot 488, which can improve the sealing performance here and prevent the entry of external impurities;

[0062] After the second motor 467 starts working, it drives the threaded rod 464 to rotate, the threaded rod 464 drives the threaded block 465 to move, and the threaded block 465 drives the brush plate 466 to move. After the brush plate 466 moves, the impurities adhering to the filter screen 487 can be brushed off. When the brush plate 466 moves back and forth until it passes through the two scrapers 452, the scraper 452 contacts the brush plate 466 and can scrape off the impurities remaining on the brush plate 466 itself, so as to ensure the cleanliness of the brush plate 466 itself and ensure its cleaning performance;

[0063] The temperature sensors 6 on the top of the first air intake frame 43 and inside the cabin 1 can detect the temperatures inside the cabin 1 and the wheel hub 3 respectively. When the temperatures inside the two are abnormal, the lamp body 72 is powered on and lights up. At this time, the second electric push rod 77 works and pushes and pulls the lifting plate 76 to lift and lower it. After the lifting plate 76 moves, it drives the second push-pull rod 792 to flip over. After the second push-pull rod 792 flips over, it pushes the control board 78. The control board 78 drives the rack 79 to move, and the rack 79 drives the third gear 791 to rotate. The third gear 791 drives the connecting rod 74 to rotate, and the connecting rod 74 drives the lamp holder 71 to swing with the connecting rod 74 as the axis. It can be seen from the above connection relationship that the lamp body 72 can be controlled to swing repeatedly to adjust its illumination angle, and in the process of continuous swinging and shaking of the lamp body 72, it can attract the attention of outside staff, so as to handle it and further improve safety.

[0064] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine cooling circuit, comprising a nacelle (1), a tower (2), a hub (3) and a cooling mechanism (4), characterized in that: The nacelle (1) is fixedly connected to the top of the tower (2), a generator assembly (5) is fixedly connected inside the nacelle (1), and the generator assembly (5) is connected to the hub (3) via a rotating shaft; The cooling mechanism (4) comprises a frame (41), an adapter frame (42) and a first air intake frame (43); the frame (41) is fixedly connected to a side wall of the cabin (1); the adapter frame (42) is arranged on the outside of the tower (2); the first air intake frame (43) is fixedly connected to the inside of the hub (3); a fan assembly (44) is fixedly connected to the inside of the frame (41); a first pipe (45) is fixedly connected between the frame (41) and the adapter frame (42); a first mounting seat (46) and a second mounting seat (47) are fixedly connected to one side of the hub (3); the first mounting seat (46) ) and a second mounting seat (47) are respectively connected to a first annular frame (48) and a second annular frame (49) on one side through a sealing bearing, a second air intake frame (491) is fixedly connected to a side wall of the inner cavity of the engine room (1), a second pipe (492) is fixedly connected between the adapter frame (42) and the second annular frame (49), a first connecting pipe (493) is fixedly connected between the first annular frame (48) and the engine room (1), a second connecting pipe (494) is fixedly connected to the bottom of the first air intake frame (43), and one end of the second connecting pipe (494) is fixedly connected to a side wall of the inner cavity of the wheel hub (3); The first connecting pipe (493) is respectively connected to the second air intake frame (491) and the first annular frame (48); the second annular frame (49) is respectively connected to the second connecting pipe (494) and the second pipe (492); a hole groove (495) is provided on a side wall of the hub (3); the hole groove (495) is connected to the first mounting seat (46); a first heat dissipation hole (496) is provided on a side wall of the first air intake frame (43); a second heat dissipation hole (497) is provided on a side wall of the second air intake frame (491); a first air guide is fixedly connected to a side wall of the first air intake frame (43); A frame (498) is provided, a second guide frame (499) is fixedly connected to one side wall of the second air intake frame (491), a positioning rod is fixedly connected to the top of the adapter frame (42), the positioning rod is fixedly connected to the bottom of the cabin (1), an exhaust hole is provided on one side wall of the cabin (1), an inclined frame (481) is fixedly connected to one side wall of the cabin (1), the inclined frame (481) is arranged outside the exhaust hole, a first fixing rod (482) is fixedly connected between the first annular frame (48) and the cabin (1), and a second fixing rod (483) is fixedly connected between the second annular frame (49) and the cabin (1).

2. A wind turbine generator cooling circuit according to claim 1, characterized in that: The cooling mechanism (4) comprises a protection component, the protection component comprising a processing frame (484) and a protection frame (485), the protection frame (485) being fixedly connected to one side of the cabin (1), the protection frame (485) being arranged on the outside of the frame body (41), a rectangular groove being provided on one side wall of the frame body (41), a drainage groove (486) being provided on the top of the protection frame (485), the processing frame (484) being fixedly connected to one side wall of the frame body (41), and a drainage groove (486) being provided on the top of the protection frame (485). A filter screen (487) is connected, a through slot (488) is provided on the other side wall of the processing frame (484), a movable plate (489) is arranged on the top of the frame body (41), a limit plate (471) is fixedly connected to the top of the frame body (41), the limit plate (471) passes through the movable plate (489), a first electric push rod (472) is fixedly connected to one side of the movable plate (489), and one end of the limit plate (471) and the first electric push rod (472) are both fixedly connected to a side wall of the cabin (1).

3. A wind turbine generator cooling circuit according to claim 2, characterized in that: Two partitions (473) are fixedly connected inside the processing frame (484), a first round rod (474) and a second round rod (475) are rotatably connected inside the processing frame (484), the first round rod (474) extends outside the processing frame (484), a U-shaped plate (476) is fixedly connected to the front side of the processing frame (484), a cotton cloth belt (477) is arranged inside the processing frame (484), the first round rod (474) and the second round rod (475) both penetrate the cotton cloth belt (477) and are connected to the cotton cloth belt (477). The inner sides of the belt (477) are fitted together, and the cotton belt (477) passes through the two partitions (473) respectively. A heating tube (478) is fixedly connected to a side wall of the inner cavity of the processing frame (484). The first round rod (474) is fixedly connected to the outside with a first gear (479). The front side of the U-shaped plate (476) is fixedly connected to a first motor (461). The first motor (461) is fixedly connected to a second gear (462) via an output shaft, and the second gear (462) is meshed with the first gear (479).

4. A wind turbine generator cooling circuit according to claim 2, characterized in that: The processing frame (484) is fixedly connected to a mounting plate (463) on the outside, a threaded rod (464) is rotatably connected to the inside of the mounting plate (463), a threaded block (465) is slidably connected to the inside of the mounting plate (463), the threaded rod (464) passes through the threaded block (465) and is threadedly connected to the threaded block (465), a brush plate (466) is fixedly connected to one side of the threaded block (465), one side of the brush plate (466) is in contact with one side of the filter screen (487), a second motor (467) is fixedly connected to the front side of the mounting plate (463), the second motor (467) is fixedly connected to the threaded rod (464) via an output shaft, and two scrapers (452) are fixedly connected to the inside of the mounting plate (463), the two scrapers (452) are respectively arranged on the front and rear sides of the processing frame (484).

5. A wind turbine generator cooling circuit according to claim 2, characterized in that: A transverse plate (468) is fixedly connected to one side wall of the processing frame (484), a baffle (469) is arranged at the bottom of the transverse plate (468), the baffle (469) is in contact with the outer side wall of the processing frame (484), a guide rod is fixedly connected to the top of the baffle (469), the guide rod passes through the transverse plate (468), one side of the movable plate (489) is movably connected to a first push-pull rod (451) via a movable hinge seat, and one end of the first push-pull rod (451) is movably connected to the baffle (469) via a movable hinge seat.

6. A wind turbine generator cooling circuit according to claim 1, characterized in that: The top of the first air intake frame (43) and the bottom of the inner cavity of the cabin (1) are both fixedly connected with a temperature sensor (6); the adapter frame (42) is provided with a warning mechanism (7); the warning mechanism (7) comprises a lamp holder (71); the lamp holder (71) is provided at the bottom of the adapter frame (42); a lamp body (72) is fixedly connected to the lamp holder (71); the lamp body (72) is electrically connected to the temperature sensor (6); vertical plates (73) are provided on both sides of the lamp holder (71); the vertical plates (73) are fixedly connected to the bottom of the adapter frame (42); adjacent vertical plates (73) are rotatably connected to each other. A connecting rod (74) is provided, the connecting rod (74) passes through the lamp holder (71) and is fixedly connected to the lamp holder (71), a positioning plate (75) is fixedly connected to the outside of the adapter frame (42), an auxiliary groove is provided on the tower (2), a lifting plate (76) is provided on the outside of the tower (2), the lifting plate (76) passes through the auxiliary groove and matches the auxiliary groove, a second electric push rod (77) is fixedly connected inside the auxiliary groove, the second electric push rod (77) is electrically connected to the temperature sensor (6), and the top of the second electric push rod (77) is fixedly connected to the bottom of the lifting plate (76).

7. A wind turbine generator cooling circuit according to claim 6, characterized in that: The positioning plate (75) is externally slidably connected to a control plate (78), the bottom of the control plate (78) is fixedly connected to a rack (79), the connecting rod (74) is externally fixedly connected to a third gear (791), the third gear (791) is arranged at the bottom of the rack (79), and the third gear (791) is meshed with the rack (79), a second push-pull rod (792) is arranged between the lifting plate (76) and the control plate (78), and two ends of the second push-pull rod (792) are respectively movably connected to the lifting plate (76) and the control plate (78) through movable hinge seats.

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