Heat dissipation device and method for wind driven generator

Abstract

The invention discloses a heat dissipation device and method for a wind driven generator, and relates to the technical field of wind driven generators. The heat dissipation box is arranged at a mounting hole formed in the cabin; and the alternate heat dissipation mechanism is arranged in the cabin and the heat dissipation box, and the alternate heat dissipation mechanism is used for absorbing heat in the cabin and then moving the heat to the outside of the cabin for heat dissipation, so that the heat dissipation effect of the cabin is improved. According to the heat dissipation device and method for the wind driven generator, in the operation process of the wind driven generator, part of heat generated by the wind driven generator is absorbed through all the heat conduction pipes located in a cabin, and the heat conduction pipes absorbing heat are driven to move to the ends of the semicircular guide rails through blowing of external wind power; the heat conduction pipes are driven by the first electric telescopic rods to be pressed into the positions below the cabin and the heat dissipation box, heat carried by the heat conduction pipes is rapidly taken away through external wind power, the two heat conduction pipes are continuously alternated, and therefore the efficient heat dissipation effect in the cabin is achieved in cooperation with the rotating blades.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, and more particularly to a heat dissipation device and method for wind turbines. Background Technology

[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. A wind turbine generally consists of components such as a wind rotor, a generator (including the device), a steering gear (tail fin), a tower, a speed limiting safety mechanism, and an energy storage device. In order to improve the heat dissipation effect of the wind turbine, a heat dissipation device is installed inside the nacelle.

[0003] Existing offshore wind turbine cooling systems typically rely on the wind turbine to accelerate airflow within the nacelle, thereby achieving rapid air exchange between the inside and outside and thus cooling. However, to ensure that the nacelle is not contaminated by dust from the external environment, filters need to be added to the cooling vents to ensure that the gas entering the nacelle is clean. The installation of filters greatly restricts the airflow speed, resulting in the wind turbine's cooling effect not meeting expectations and reducing the usability of the cooling system. Summary of the Invention

[0004] This invention discloses a heat dissipation device for wind turbines, aiming to solve the technical problem that existing offshore wind turbine heat dissipation devices generally rely on the fan to accelerate air circulation inside the nacelle, thereby achieving rapid airflow exchange between the inside and outside to achieve heat dissipation. However, in order to ensure that the inside of the nacelle is not contaminated by dust from the external environment, corresponding filters need to be added to the heat dissipation holes to ensure that the gas entering the nacelle is clean. The installation of the filters greatly restricts the gas flow speed, thus causing the wind turbine's heat dissipation effect to fail to meet expectations.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A heat dissipation device for a wind turbine generator, comprising:

[0007] cabin;

[0008] The heat dissipation box is installed at the mounting holes opened on the engine compartment;

[0009] A rotating heat dissipation mechanism is installed inside the engine compartment and heat dissipation box. The rotating heat dissipation mechanism is used to absorb heat inside the engine compartment and then move it to the outside of the engine compartment for heat dissipation, thereby improving the heat dissipation effect of the engine compartment.

[0010] An auxiliary mechanism is installed at the rotating heat dissipation mechanism. The auxiliary mechanism is used to adjust the rotating heat dissipation mechanism and cooperate with the external natural wind to achieve dual protection.

[0011] The auxiliary dust removal mechanism is located in the heat dissipation box away from the engine compartment.

[0012] In a preferred embodiment, the rotating heat dissipation mechanism includes:

[0013] A semi-circular guide rail is set on the bottom inner wall of the heat sink located in the middle position, and contact sensors are fixedly connected to the inner side walls at both ends of the semi-circular guide rail.

[0014] Mounting bracket, on the side of which a follower slider is fixedly connected, and the follower slider is slidably connected to the inside of the semi-circular guide rail, and the same mating bent rod is fixedly connected to the opposite side of the two follower sliders.

[0015] A lifting rail is installed on the side wall of the mounting frame. A lifting rod is slidably connected inside the lifting rail. An external connecting piece is fixedly connected to the outer side wall of the lifting rod near the bottom end. A shaft bracket is fixedly connected to one side of the external connecting piece.

[0016] The deflection roller is connected to a connecting shaft via a bearing on the shaft frame. The deflection roller is fixedly connected to the outer side wall of the connecting shaft, and heat-conducting pipes are fixedly connected to the deflection roller at equal intervals.

[0017] In a preferred embodiment, the rotating heat dissipation mechanism further includes:

[0018] An electric telescopic rod is installed at the top of the lifting rod, and the output end of the electric telescopic rod is fixedly connected to the top of the lifting rod. A connecting rod is fixedly connected to the top of the mounting frame, and the top of the electric telescopic rod is fixedly connected to the end of the connecting rod. The electric telescopic rod is used to adjust the height of each heat-conducting pipe.

[0019] Two limiting sleeves are set on the outer side wall of the outer connecting piece at both ends of the shaft frame. A deflection spring is fixedly connected inside the two limiting sleeves, and the ends of the deflection springs are fixedly connected to the outer side wall of the deflection roller.

[0020] The temperature sensor has mounting slots on one heat pipe at the top and one at the bottom, and the temperature sensor is installed inside the mounting slots.

[0021] In a preferred embodiment, the auxiliary mechanism includes:

[0022] A rotating frame, wherein two support rods are provided on the rotating frame, and a range iron plate is fixedly connected to each of the two support rods;

[0023] An electromagnet is installed on the side of the mounting bracket facing the range plate, and the electromagnet is in contact with the adjacent range plate.

[0024] The motor base is located at the center point of the semi-circular guide rail in the heat dissipation box. A second forward and reverse motor is fixedly connected to the top of the motor base. The output shaft of the second forward and reverse motor is fixedly connected to a forward and reverse shaft through a coupling. The rotating frame is fixedly connected to the outer wall of the forward and reverse shaft.

[0025] In a preferred embodiment, a motor frame is fixedly connected to the top of the heat dissipation box located inside the engine compartment, and a first reversible motor is fixedly connected to the top of the motor frame. The output shaft of the first reversible motor is fixedly connected to a rotating shaft via a coupling, and rotating blades are distributed in a ring on the outer side wall of the rotating shaft.

[0026] In a preferred embodiment, the bottom of the heat sink has two symmetrically arranged fitting holes, and fitting sealing plates are inserted into the interior of both fitting holes. One of the fitting sealing plates is located below the deflection roller. A support frame is fixedly connected to the bottom of the heat sink located below the fitting sealing plate. A telescopic connecting rod and a return spring rod are fixedly connected to the bottom of the fitting sealing plate, and the bottoms of the telescopic connecting rod and the return spring rod are fixedly connected to the support frame.

[0027] In a preferred embodiment, sealing plates are fixedly connected to both openings of the heat dissipation box, and fixing holes are opened on the upper inclined surface of the sealing plates. Filter screens are fixedly connected inside the fixing holes, and the two filter screens are distributed outwards. A fixing rod is fixedly connected to the lower inclined surface of the sealing plates, and a middle rod is fixedly connected to the top of the middle rod. Interception rods are fixedly connected at equal intervals on the middle rod.

[0028] In a preferred embodiment, the auxiliary dust removal mechanism includes:

[0029] The mounting bracket is installed on the top inner wall of the heat dissipation box near the filter screen.

[0030] A rotating cylinder is connected to both ends of a lifting frame via bearings. Elastic connecting rods are fixedly connected at equal intervals on the downward-facing arc surface of the rotating cylinder, and a striking ball is fixedly connected to the end of each elastic connecting rod.

[0031] The limiting frame has mounting rods fixedly connected to both ends of its top. The ends of the mounting rods are fixedly connected to the side wall of the hoisting frame. Each elastic link passes through the limiting frame.

[0032] In a preferred embodiment, a guide arc rod is fixedly connected to the bend point of the heat sink located inside the cabin, and a wind direction sensor is fixedly connected to the top of the heat sink located above the filter screen.

[0033] A method for heat dissipation of a wind turbine generator, using a heat dissipation device for a wind turbine generator as described above, includes the following steps;

[0034] Step 1: When cooling the interior of the cabin, the direction of air flow in the outside is monitored by the wind direction sensor. The forward and reverse motor 1 is started to drive the rotating blades to rotate. The rotation direction of the forward and reverse motor 1 is the same as the wind direction. The high-speed rotation of the rotating blades accelerates the flow of hot air inside the cabin, thereby accelerating the heat dissipation from the cabin.

[0035] Step 2: While the rotating blades accelerate the airflow to dissipate heat, the heat pipes absorb heat from inside the cabin. The wind generated by the rotating blades, combined with the outside air, blows the heat pipes near the rotating blades, moving them to the end of the semi-circular guide rail. When the contact sensor is triggered, the electric telescopic rod moves the heat pipes to the bottom of the heat sink. The heat absorbed by the heat pipes is quickly carried away. When the temperature sensor detects that the heat contained in the heat pipes is below a specified value, the electric telescopic rod moves the heat pipes back to their original position.

[0036] Step 3: If the external wind force continues to be in one direction, the heat pipe located at the rotating blade will reach the saturation value, and the electromagnet will be activated. The second forward and reverse motor will be turned on. The second forward and reverse motor rotates in the opposite direction to the external wind flow. The second forward and reverse motor drives the range iron plate to rotate 90°. During the rotation, the range iron plate will be attracted to the nearby electromagnet, thereby moving the heat pipe to the end of the semi-circular guide rail, and dissipating the heat pipe through it. After the heat pipe is reset, the electromagnet will be turned off.

[0037] As can be seen from the above, the heat dissipation device for wind turbines provided by the present invention has the following technical effect: during the operation of the wind turbine, some of the heat generated by it is absorbed by each heat pipe located inside the nacelle. The heat pipes after absorbing heat are moved to the end of the semi-circular guide rail by the external wind. Driven by the electric telescopic rod, they are pressed into the nacelle and the heat dissipation box. The external wind quickly carries away the heat it carries. The two sets of heat pipes are constantly alternating, thereby achieving efficient heat dissipation inside the nacelle in conjunction with the rotating blades. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of a heat dissipation device for a wind turbine generator proposed in this invention.

[0039] Figure 2 This is a cross-sectional view of the nacelle and heat sink structure of a heat dissipation device for a wind turbine generator proposed in this invention.

[0040] Figure 3 This is a schematic diagram of the internal structure of the heat dissipation box of a heat dissipation device for a wind turbine generator proposed in this invention.

[0041] Figure 4This is a schematic diagram of the combined structure of a rotating heat dissipation mechanism and an auxiliary mechanism for a heat dissipation device for a wind turbine generator proposed in this invention.

[0042] Figure 5 This is a schematic diagram of a combined structure of a heat pipe, lifting rail, and deflection roller for a heat dissipation device for a wind turbine generator proposed in this invention.

[0043] Figure 6 for Figure 5 Top view of the overall structure.

[0044] Figure 7 This is an exploded view of the nacelle, heat sink, and fitting sealing plate structure of a heat dissipation device for a wind turbine generator proposed in this invention.

[0045] Figure 8 This is a schematic diagram of an auxiliary mechanism for a heat dissipation device for a wind turbine generator proposed in this invention.

[0046] Figure 9 This is a schematic diagram of the combined structure of a sealing plate, filter screen and auxiliary dust removal mechanism for a heat dissipation device for a wind turbine generator proposed in this invention.

[0047] Figure 10 for Figure 9 A schematic diagram of the planar structure.

[0048] In the diagram: 1. Cabin; 2. Heat sink; 3. Wind direction sensor; 4. Sealing plate; 5. Rotating heat dissipation mechanism; 501. Semicircular guide rail; 502. Contact sensor; 503. Mounting bracket; 504. Electric telescopic rod one; 505. External connector; 506. Deflection roller; 507. Heat pipe; 508. Lifting rail; 509. Follow-up slider; 510. Lifting rod; 511. Connecting shaft; 512. Temperature sensor; 513. Connecting rod; 514. Shaft bracket; 515. Limit sleeve; 516. Deflection spring; 517. Mounting slot; 518. Butt joint bent rod; 6. Guide arc rod; 7. Motor frame; 8. Rotating shaft; 9. Rotating... 10. Moving blade; 11. Reverse motor 1; 12. Support frame; 13. Fitting sealing plate; 14. Return spring rod; 15. Intercepting rod; 16. Filter screen; 17. Fitting hole; 18. Telescopic connecting rod; 19. Auxiliary mechanism; 10. Rotating frame; 10. Reverse shaft; 11. Motor base; 12. Reverse motor 2; 13. Electromagnet; 14. Range iron plate; 15. Auxiliary dust removal mechanism; 16. Lifting frame; 17. Rotating cylinder; 18. Striking ball; 19. Elastic connecting rod; 10. Limiting frame; 19. Mounting rod; 20. Fixed long rod; 21. Intermediate rod. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] The heat dissipation device for wind turbines disclosed in this invention is mainly applied to existing offshore wind turbine heat dissipation devices, which generally accelerate the air circulation inside the nacelle through the fan, thereby achieving rapid air exchange between the inside and outside to achieve the heat dissipation effect. However, in order to ensure that the inside of the nacelle is not contaminated by dust in the external environment, it is necessary to add corresponding filters at the heat dissipation holes to ensure that the gas entering the nacelle is clean gas. The installation of the filter greatly restricts the gas flow speed, resulting in scenarios where the heat dissipation effect of the fan does not achieve the expected effect.

[0051] Reference Figures 1-10 A heat dissipation device for a wind turbine generator, comprising:

[0052] Cabin 1;

[0053] The heat dissipation box 2 is installed at the mounting hole opened on the engine compartment 1;

[0054] The rotating heat dissipation mechanism 5 is installed inside the engine compartment 1 and the heat dissipation box 2. The rotating heat dissipation mechanism 5 is used to absorb the heat inside the engine compartment 1 and then move it to the outside of the engine compartment 1 for heat dissipation, thereby improving the heat dissipation effect of the engine compartment 1.

[0055] Auxiliary mechanism 18 is installed at the rotating heat dissipation mechanism 5. Auxiliary mechanism 18 is used to adjust the rotating heat dissipation mechanism 5 and cooperate with the external natural wind to achieve dual protection.

[0056] The auxiliary dust removal mechanism 19 is located in the heat dissipation box 2 away from the engine compartment 1.

[0057] Reference Figures 1-6 In a preferred embodiment, the alternating heat dissipation mechanism 5 includes:

[0058] A semi-circular guide rail 501 is installed on the bottom inner wall of the heat sink 2 at the middle position. Contact sensors 502 are fixedly connected to the inner side walls at both ends of the semi-circular guide rail 501.

[0059] Mounting bracket 503, with follower slider 509 fixedly connected to the side of mounting bracket 503, and follower slider 509 slidably connected to the inside of semi-circular guide rail 501, and the same mating bent rod 518 fixedly connected to the opposite side of the two follower sliders 509.

[0060] The lifting rail 508 is set on the side wall of the mounting bracket 503. The lifting rod 510 is slidably connected inside the lifting rail 508. An external connecting piece 505 is fixedly connected to the outer side wall of the lifting rod 510 near the bottom end. A shaft bracket 514 is fixedly connected to one side of the external connecting piece 505.

[0061] The deflection roller 506 is connected to the connecting shaft 511 via a bearing on the shaft frame 514. The deflection roller 506 is fixedly connected to the outer side wall of the connecting shaft 511. Heat conduction pipes 507 are fixedly connected to the deflection roller 506 at equal intervals.

[0062] In specific application scenarios, during the operation of the wind turbine, some of the heat generated by the wind turbine is absorbed by the heat pipes 507 located inside the nacelle 1. The heat pipes 507, after absorbing heat, are moved to the end of the semi-circular guide rail 501 by the external wind. Driven by the electric telescopic rod 504, they are pressed into the nacelle 1 and the heat sink 2. The external wind quickly carries away the heat they carry. The two sets of heat pipes 507 are constantly alternating, thereby cooperating with the rotating blades 9 to achieve efficient heat dissipation inside the nacelle 1.

[0063] Specifically, the wind direction sensor 3 on the heat sink 2 determines the direction of the external wind, thereby activating the forward and reverse motor 10 to drive the rotating blade 9 to rotate. The rotation direction of the forward and reverse motor 10 is the same as the wind direction. The high-speed rotation of the rotating blade 9 accelerates the flow of hot gas inside the cabin 1, thereby accelerating the heat dissipation from the cabin 1. At the same time, the wind generated by the rotating blade 9 during rotation, in conjunction with the external gas, blows the heat pipe 507 near the rotating blade 9, moving it to the end of the semi-circular guide rail 501. When the contact sensor 502 is triggered, the electric telescopic rod 504 moves the heat pipe 507 to the bottom of the heat sink 2. The heat absorbed by the heat pipe 507 is quickly carried away. The temperature sensor 512 detects that the heat contained in the heat pipe 507 is lower than a specified value, and then the electric telescopic rod 504 drives the heat pipe 507 to reset.

[0064] It should be noted that the two sets of heat pipes 507 are connected by a connecting bent rod 518. Therefore, when one set of heat pipes 507 is moved, the other set of heat pipes 507 moves accordingly.

[0065] Reference Figure 5 and Figure 6 In a preferred embodiment, the alternating heat dissipation mechanism 5 further includes:

[0066] An electric telescopic rod 504 is installed at the top of the lifting rod 510, and the output end of the electric telescopic rod 504 is fixedly connected to the top of the lifting rod 510. A connecting rod 513 is fixedly connected to the top of the mounting bracket 503, and the top end of the electric telescopic rod 504 is fixedly connected to the end of the connecting rod 513. The electric telescopic rod 504 is used to adjust the height of each heat conduction pipe 507.

[0067] Two limiting sleeves 515 are set on the outer side wall of the outer connecting piece 505 at both ends of the shaft frame 514. A deflection spring 516 is fixedly connected inside the two limiting sleeves 515. The ends of the deflection springs 516 are fixedly connected to the outer side wall of the deflection roller 506.

[0068] Temperature sensor 512 has mounting slots 517 on one of the heat pipes 507 located at the top and one at the bottom, and the temperature sensor 512 is installed inside the mounting slots 517.

[0069] Specifically, when the heat pipe 507 deflects with the follower slider 509, after the heat pipe 507 contacts the guide arc rod 6, the deflection spring 516 is compressed, so the heat pipe 507 can smoothly move from the position near the rotating blade 9 to the end of the semi-circular guide rail 501, avoiding it from getting stuck due to resistance during rotation.

[0070] Reference Figure 1 , Figure 4 and Figure 8 In a preferred embodiment, the auxiliary mechanism 18 includes:

[0071] A rotating frame 1801 is provided with two support rods, and a range iron plate 1806 is fixedly connected to each of the two support rods.

[0072] Electromagnet 1805 is disposed on the side of mounting bracket 503 facing the range iron plate 1806, and electromagnet 1805 is in contact with the adjacent range iron plate 1806.

[0073] The motor base 1803 is located at the center point of the semi-circular guide rail 501 in the heat dissipation box 2. The top of the motor base 1803 is fixedly connected to the second forward and reverse motor 1804. The output shaft of the second forward and reverse motor 1804 is fixedly connected to the forward and reverse shaft 1802 through a coupling. The rotating frame 1801 is fixedly connected to the outer wall of the forward and reverse shaft 1802.

[0074] Specifically, if the temperature sensors 512 on both sets of heat pipes 507 detect that the heat carried by the heat pipe 507 exceeds the specified value, and one of the two contact sensors 502 at both ends is not triggered, it indicates that the direction of external gas flow remains unchanged for a long time. In this case, the electromagnet 1805 is activated, and the second forward and reverse motor 1804 is turned on. The rotation direction of the second forward and reverse motor 1804 is opposite to the direction of external wind flow. The second forward and reverse motor 1804 drives the range plate 1806 to rotate 90°. During the rotation, the range plate 1806 attracts the nearby electromagnet 1805, thereby moving the set of heat pipes 507 to the end of the semi-circular guide rail 501, and successfully completing the heat dissipation operation of the heat pipes 507.

[0075] Reference Figures 1-3 In a preferred embodiment, a motor frame 7 is fixedly connected to the top of the heat sink 2 located inside the engine compartment 1, and a forward and reverse motor 10 is fixedly connected to the top of the motor frame 7. The output shaft of the forward and reverse motor 10 is fixedly connected to a rotating shaft 8 via a coupling, and rotating blades 9 are distributed in a ring on the outer side wall of the rotating shaft 8.

[0076] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7 In a preferred embodiment, two fitting holes 16 are symmetrically opened at the bottom of the heat sink 2, and fitting sealing plates 12 are inserted into the interior of both fitting holes 16. One of the fitting sealing plates 12 is located below the deflection roller 506. A support frame 11 is fixedly connected to the bottom of the heat sink 2 below the fitting sealing plate 12. A telescopic connecting rod 17 and a return spring rod 13 are fixedly connected to the bottom of the fitting sealing plate 12, respectively. The bottoms of the telescopic connecting rod 17 and the return spring rod 13 are both fixedly connected to the support frame 11.

[0077] It should be noted that when the heat pipe 507 is used for heat dissipation, the lifting rod 510 presses against the mating sealing plate 12, causing the return spring rod 13 to compress. The heat pipe 507 then gradually moves to the bottom of the heat dissipation box 2. At this time, the air flow direction inside the engine compartment 1 is towards the mating sealing plate 12. Therefore, it is not easy for external air to carry dust into the engine compartment 1 through the mating hole 16. After the heat pipe 507 has finished dissipating heat, the lifting rod 510 resets, and the return spring rod 13 drives the mating sealing plate 12 to reset.

[0078] Reference Figure 2 , Figure 3 , Figure 9 and Figure 10In a preferred embodiment, sealing plates 4 are fixedly connected to both openings of the heat sink 2, and fixing holes are opened on the upper inclined surface of the sealing plate 4. Filter screens 15 are fixedly connected inside the fixing holes. The two filter screens 15 are distributed outwards. A fixing rod 20 is fixedly connected to the inclined surface of the sealing plate 4 below the filter screens 15. A middle rod 21 is fixedly connected to the top of the fixing rod 20 in the middle. Interception rods 14 are fixedly connected at equal intervals on the middle rod 21.

[0079] Reference Figure 9 and Figure 10 In a preferred embodiment, the auxiliary dust removal mechanism 19 includes:

[0080] The hanging bracket 1901 is installed on the top inner wall of the heat dissipation box 2 near the filter screen 15;

[0081] Rotating cylinder 1902 is connected to both ends of lifting frame 1901 via bearings. Elastic connecting rods 1904 are fixedly connected at equal intervals on the downward-facing arc surface of rotating cylinder 1902. A striking ball 1903 is fixedly connected to the end of each elastic connecting rod 1904.

[0082] The limiting frame 1905 has mounting rods 1906 fixedly connected to both ends of its top. The ends of the mounting rods 1906 are fixedly connected to the side wall of the hoisting frame 1901. Each elastic link 1904 passes through the limiting frame 1905.

[0083] Specifically, during the process of the filter 15 blocking external dust, some dust will adhere to the filter 15, causing poor air circulation. In this invention, during the process of external air flowing into the heat sink 2 and the engine compartment 1, the air flow blows the elastic connecting rod 1904, causing the rotating cylinder 1902 to deflect. Then, the striking ball 1903 at the elastic connecting rod 1904 gradually strikes the side of the filter 15 located inside the heat sink 2, making it vibrate and accelerating the removal of dust adhering to its outer side. Furthermore, the removed dust is quickly separated from the filter 15 under the action of the air, preventing the filter holes on the filter 15 from being gradually blocked, which would lead to a worse and worse heat dissipation effect in the engine compartment 1.

[0084] Reference Figures 1-3 In a preferred embodiment, a guide arc rod 6 is fixedly connected to the bend point of the heat sink 2 located inside the cabin 1, and a wind direction sensor 3 is fixedly connected to the top of the heat sink 2 located above the filter screen 15.

[0085] Specifically, the guide arc rod 6 is used to guide the heat pipe 507 to avoid right-angle jamming, and the wind direction sensor 3 is used to monitor the external wind direction in real time, so as to accurately adjust the rotation direction of the forward and reverse motor 10 and the forward and reverse motor 1804.

[0086] A method for heat dissipation of a wind turbine generator, using a heat dissipation device for a wind turbine generator as described above, includes the following steps;

[0087] Step 1: When cooling the interior of the cabin 1, the direction of air flow in the outside is monitored by the wind direction sensor 3. The forward and reverse motor 10 is started to drive the rotating blades 9 to rotate. The rotation direction of the forward and reverse motor 10 is the same as the wind direction. The high-speed rotation of the rotating blades 9 accelerates the flow of hot air inside the cabin 1, thereby accelerating the heat dissipation inside the cabin 1.

[0088] Step 2: While the rotating blade 9 accelerates the airflow to achieve heat dissipation, the heat pipe 507 absorbs the heat inside the cabin 1. The wind generated by the rotating blade 9 during its rotation, in conjunction with the external air, blows the heat pipe 507 near the rotating blade 9, causing it to move to the end of the semi-circular guide rail 501. When the contact sensor 502 is triggered, the electric telescopic rod 504 moves the heat pipe 507 to the bottom of the heat sink 2. The heat absorbed by the heat pipe 507 is quickly carried away. When the temperature sensor 512 detects that the heat contained in the heat pipe 507 is lower than the specified value, the electric telescopic rod 504 drives the heat pipe 507 to reset.

[0089] Step 3: If the external wind force continues to be in one direction, the heat pipe 507 located at the rotating blade 9 will reach the saturation value when it absorbs heat. Then, the electromagnet 1805 will be activated, and the second forward and reverse motor 1804 will be turned on. The rotation direction of the second forward and reverse motor 1804 is opposite to the direction of the external wind flow. The second forward and reverse motor 1804 will drive the range iron plate 1806 to rotate 90°. During the rotation, the range iron plate 1806 will attract the nearby electromagnet 1805, thereby moving the heat pipe 507 to the end of the semi-circular guide rail 501, and dissipating the heat pipe 507. After the heat pipe 507 is reset, the electromagnet 1805 will be turned off.

[0090] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heat dissipation device for a wind turbine generator, characterized in that, include: cabin; The heat dissipation box is installed at the mounting holes opened on the engine compartment; A rotating heat dissipation mechanism is installed inside the engine compartment and heat dissipation box. The rotating heat dissipation mechanism is used to absorb heat inside the engine compartment and then move it to the outside of the engine compartment for heat dissipation, thereby improving the heat dissipation effect of the engine compartment. An auxiliary mechanism is installed at the rotating heat dissipation mechanism. The auxiliary mechanism is used to adjust the rotating heat dissipation mechanism and cooperate with the external natural wind to achieve dual protection. The auxiliary dust removal mechanism is located in the heat dissipation box away from the engine compartment.

2. A heat dissipation device for a wind turbine generator according to claim 1, characterized in that, The rotating heat dissipation mechanism includes: A semi-circular guide rail is set on the bottom inner wall of the heat sink located in the middle position, and contact sensors are fixedly connected to the inner side walls at both ends of the semi-circular guide rail. Mounting bracket, on the side of which a follower slider is fixedly connected, and the follower slider is slidably connected to the inside of the semi-circular guide rail, and the same mating bent rod is fixedly connected to the opposite side of the two follower sliders. A lifting rail is installed on the side wall of the mounting frame. A lifting rod is slidably connected inside the lifting rail. An external connecting piece is fixedly connected to the outer side wall of the lifting rod near the bottom end. A shaft bracket is fixedly connected to one side of the external connecting piece. The deflection roller is connected to a connecting shaft via a bearing on the shaft frame. The deflection roller is fixedly connected to the outer side wall of the connecting shaft, and heat-conducting pipes are fixedly connected to the deflection roller at equal intervals.

3. A heat dissipation device for a wind turbine generator according to claim 1, characterized in that, The rotating heat dissipation mechanism also includes: An electric telescopic rod is installed at the top of the lifting rod, and the output end of the electric telescopic rod is fixedly connected to the top of the lifting rod. A connecting rod is fixedly connected to the top of the mounting frame, and the top of the electric telescopic rod is fixedly connected to the end of the connecting rod. The electric telescopic rod is used to adjust the height of each heat-conducting pipe. Two limiting sleeves are set on the outer side wall of the outer connecting piece at both ends of the shaft frame. A deflection spring is fixedly connected inside the two limiting sleeves, and the ends of the deflection springs are fixedly connected to the outer side wall of the deflection roller. The temperature sensor has mounting slots on one heat pipe at the top and one at the bottom, and the temperature sensor is installed inside the mounting slots.

4. A heat dissipation device for a wind turbine generator according to claim 3, characterized in that, The auxiliary mechanism includes: A rotating frame, wherein two support rods are provided on the rotating frame, and a range iron plate is fixedly connected to each of the two support rods; An electromagnet is installed on the side of the mounting bracket facing the range plate, and the electromagnet is in contact with the adjacent range plate. The motor base is located at the center point of the semi-circular guide rail in the heat dissipation box. A second forward and reverse motor is fixedly connected to the top of the motor base. The output shaft of the second forward and reverse motor is fixedly connected to a forward and reverse shaft through a coupling. The rotating frame is fixedly connected to the outer wall of the forward and reverse shaft.

5. A heat dissipation device for a wind turbine generator according to claim 4, characterized in that, The heat dissipation box is located at the top of the engine compartment and is fixedly connected to a motor frame. A reversible motor is fixedly connected to the top of the motor frame. The output shaft of the reversible motor is fixedly connected to a rotating shaft through a coupling. Rotating blades are distributed in a ring on the outer side wall of the rotating shaft.

6. A heat dissipation device for a wind turbine generator according to claim 5, characterized in that, The bottom of the heat sink has two symmetrically arranged fitting holes, and fitting sealing plates are inserted into the two fitting holes. One of the fitting sealing plates is located below the deflection roller. A support frame is fixedly connected to the bottom of the heat sink located below the fitting sealing plate. A telescopic connecting rod and a return spring rod are fixedly connected to the bottom of the fitting sealing plate, and the bottoms of the telescopic connecting rod and the return spring rod are fixedly connected to the support frame.

7. A heat dissipation device for a wind turbine generator according to claim 6, characterized in that, Sealing plates are fixedly connected to the openings on both sides of the heat dissipation box. The upper slope of the sealing plate has a fixing hole, and a filter screen is fixedly connected inside the fixing hole. The two filters are distributed outwards. A fixing rod is fixedly connected to the slope of the sealing plate below the filter screen. A middle rod is fixedly connected to the top of the fixing rod in the middle. Interception rods are fixedly connected at equal intervals on the middle rod.

8. A heat dissipation device for a wind turbine generator according to claim 7, characterized in that, The auxiliary dust removal mechanism includes: The mounting bracket is installed on the top inner wall of the heat dissipation box near the filter screen. A rotating cylinder is connected to both ends of a lifting frame via bearings. Elastic connecting rods are fixedly connected at equal intervals on the downward-facing arc surface of the rotating cylinder, and a striking ball is fixedly connected to the end of each elastic connecting rod. The limiting frame has mounting rods fixedly connected to both ends of its top. The ends of the mounting rods are fixedly connected to the side wall of the hoisting frame. Each elastic link passes through the limiting frame.

9. A heat dissipation device for a wind turbine generator according to claim 8, characterized in that, The heat sink is fixedly connected to a flow guide rod at the bend point inside the cabin, and a wind direction sensor is fixedly connected to the top of the heat sink above the filter screen.

10. A method for heat dissipation of a wind turbine generator, using a heat dissipation device for a wind turbine generator as described in claim 9, characterized in that, Includes the following steps; Step 1: When cooling the interior of the cabin, the direction of air flow in the outside is monitored by the wind direction sensor. The forward and reverse motor 1 is started to drive the rotating blades to rotate. The rotation direction of the forward and reverse motor 1 is the same as the wind direction. The high-speed rotation of the rotating blades accelerates the flow of hot air inside the cabin, thereby accelerating the heat dissipation from the cabin. Step 2: While the rotating blades accelerate the airflow to dissipate heat, the heat pipes absorb heat from inside the cabin. The wind generated by the rotating blades, combined with the outside air, blows the heat pipes near the rotating blades, moving them to the end of the semi-circular guide rail. When the contact sensor is triggered, the electric telescopic rod moves the heat pipes to the bottom of the heat sink. The heat absorbed by the heat pipes is quickly carried away. When the temperature sensor detects that the heat contained in the heat pipes is below a specified value, the electric telescopic rod moves the heat pipes back to their original position. Step 3: If the external wind force continues to be in one direction, the heat pipe located at the rotating blade will reach the saturation value, and the electromagnet will be activated. The second forward and reverse motor will be turned on. The second forward and reverse motor rotates in the opposite direction to the external wind flow. The second forward and reverse motor drives the range iron plate to rotate 90°. During the rotation, the range iron plate will be attracted to the nearby electromagnet, thereby moving the heat pipe to the end of the semi-circular guide rail, and dissipating the heat pipe through it. After the heat pipe is reset, the electromagnet will be turned off.

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