WO2019242182A1

WO2019242182A1 - Heat dissipation system for wind power generator unit and wind power generator unit

Info

Publication number: WO2019242182A1
Application number: PCT/CN2018/111643
Authority: WO
Inventors: 尹冉; 方涛; 高杨
Original assignee: 北京金风科创风电设备有限公司
Priority date: 2018-06-22
Filing date: 2018-10-24
Publication date: 2019-12-26
Also published as: CN108843524A; CN108843524B

Abstract

A heat dissipation system for a wind power generator unit and a wind power generator unit. The wind power generator unit comprises a cabin cover (10), a flow guide cover (20), a hub (30) and a generator fixed shaft (61), the generator fixed shaft (61) being a hollow shaft formed with a through hole. The heat dissipation system comprises: an air inlet, the air inlet being formed on the cabin cover (10); an air outlet, the air outlet being formed on the flow guide cover (20); and a flow guide device (80), the flow guide device (80) being mounted in the through hole, so that air entering from the air inlet flows through the through hole and enters the hub (30), so as to dissipate heat from the wind power generator unit. By mounting the flow guide device (80) in the through hole of the generator fixed shaft (61), the heat dissipation system can prevent the flow guide device (80) from rotating with the hub (30), therefore prolonging the service life of the flow guide device (80), and facilitating the maintenance and replacement of the flow guide device (80).

Description

Radiating system for wind turbine and wind turbine

Technical field

The invention relates to the technical field of wind power generation, in particular to a heat radiation system for a wind power generator and a wind power generator including the same.

Background technique

The wheel hub is one of the important components of a wind turbine, and an electric control cabinet such as a pitch control cabinet is usually installed inside the wheel hub. The components (for example, controllers, capacitors, communication modules, etc.) installed in the electric control cabinet will generate heat during the operation of the wind turbine, and the generated heat will be dissipated into the hub. Due to the limited space inside the hub, the temperature inside the hub will increase as the components continue to generate heat. When the wind turbine is operating in a relatively high temperature environment (eg, summer), the temperature inside the hub can be higher.

Excessive temperature in the hub will cause the temperature of the electric control cabinet to be too high, which will cause the performance of the components in the electric control cabinet to decline, or even fail to work properly, which will seriously affect the power generation efficiency and reliability of the wind turbine.

At present, it is generally adopted to form an air inlet at the front end of the hub, and to add an air duct and a heat dissipation fan in the hub to use external air to dissipate the hub. However, since the hub needs to rotate, the cooling fan will rotate with the hub. Due to the vibration of the cooling fan, its mounting bolts may be loosened due to vibration, so the cooling fan may fall. Once the cooling fan or its parts fall into the hub, it may damage the electric control cabinet, so there is a safety hazard.

In addition, when maintaining the cooling fan, it is necessary to rotate the hub to a position convenient for maintenance and lock the hub, which is difficult to maintain and takes a long time to maintain. In addition, when dissipating heat to the hub, a filter needs to be installed at the air inlet to prevent outside dust from entering the hub. At this time, the filter also rotates with the hub. Since the filter is a consumable part and needs to be replaced frequently, there is a problem of inconvenient maintenance.

In addition, although the air duct can be provided to the position of the electric control cabinet, the air duct will occupy the internal space of the hub and cause maintenance personnel to inconveniently perform maintenance on other components in the hub. In addition, the installation of air ducts will increase the cost of wind turbines and the difficulty of installation and maintenance.

Summary of the Invention

Therefore, an object of the present invention is to provide a heat radiation system for a wind power generator set and a wind power generator set to solve problems such as inconvenience of installation and maintenance in the existing heat radiation system.

According to an aspect of the present invention, a cooling system for a wind turbine is provided. The wind turbine may include a nacelle cover, a shroud, a hub, and a fixed shaft of the generator. The fixed shaft of the generator is a hollow shaft formed with a through hole. Wherein, the heat dissipation system may include: an air inlet, the air inlet is formed on the nacelle cover; an air outlet, the air outlet is formed on the air guide cover; a air guide device, the air guide device is installed in the through hole, so as to enter from the air inlet The air flows through the through-holes and enters the hub to dissipate the wind turbine. By installing the guide device in the through hole of the fixed shaft of the generator, the guide device can be prevented from rotating with the hub, so the service life of the guide device can be prolonged, and the guide device can be easily maintained and replaced.

Preferably, the deflector can be arranged near the nacelle side of the wind turbine. By placing the deflector close to the cabin side, maintenance and replacement of the deflector can be facilitated.

Preferably, the deflector may be installed in the through hole by a mounting member, wherein the mounting member may include: a support frame, the support frame is fixed to the inner wall of the fixed shaft of the generator for supporting the deflector, and a fixing plate is provided. The support frame is used for holding the deflector.

Preferably, the heat dissipation system may further include a sealing plate, which may be installed in the stator shaft of the generator, for sealing a portion of the radial section of the through hole other than the portion occupied by the flow guide device to prevent flowing into the hub Air returns. By providing a sealing plate, air can be prevented from flowing back, so the heat radiation effect of the hub can be improved.

Preferably, the sealing plate can be fixed on the support frame.

Preferably, the flow guiding device may be coaxially provided with the through hole, and the support frame may be located at a lower portion of the through hole, wherein the upper portion of the through hole may be installed with a sealing plate mounting frame, and the sealing plate may be fixed on the sealing plate mounting frame. The support frame and the seal plate mounting frame can improve the installation stability of the seal plate.

Preferably, the heat dissipation system may further include a wind deflector, and the wind deflector may be disposed at the front of the hub for changing the flow direction of the air entering the hub through the air guiding device.

Preferably, the air inlet can be formed at the rear of the nacelle cover, and an air inlet damper and a filter are provided. By forming an air inlet at the side and / or bottom of the nacelle cover, rainwater and the like can be prevented from entering the cabin, and the filter provided on the air inlet can be easily maintained and replaced.

Preferably, an exhaust port may be formed on a portion of the hub near the generator side of the wind turbine, and an exhaust port damper may be provided on the exhaust port. An exhaust air damper is installed on the hub to prevent unfiltered outside air from flowing into the hub when the heat dissipation system is not running.

Preferably, the air outlet may be formed between the shroud and a root of a blade of the wind power generator set.

Preferably, the heat dissipation system may further include a heat dissipation control cabinet and a temperature sensor, and the temperature sensor is disposed in the hub, wherein the heat dissipation control cabinet may control the air inlet damper, the air outlet damper, and the diversion based on the temperature value sensed by the temperature sensor. Turn the device on and off.

According to another aspect of the present invention, a wind turbine is provided, wherein the wind turbine includes a heat dissipation system as described above.

According to the heat dissipation system of the present invention, by installing the flow guide device in a through hole of the fixed shaft of the generator, the flow guide device can be prevented from rotating with the hub, so the service life of the flow guide device can be extended, and the flow guide device can be facilitated. Perform maintenance and replacement.

In addition, according to the heat dissipation system of the present invention, by providing a flow guide device in the through hole of the fixed shaft of the generator and by providing a windshield at the front end of the hub, the airflow direction is changed so that the air flows through the heat source in the hub without additional installation. Ventilation ducts, thus reducing the cost of wind turbines.

In addition, according to the heat dissipation system of the present invention, external air can flow through the base, the generator stator shaft, and the hub after flowing into the cabin, so the engine compartment, the base, the generator stator shaft, and the hub can be dissipated at the same time, and Electrical components and other components on the circulation path provide a suitable temperature environment, which can extend the service life of the electrical components and other components and improve reliability.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and features of the present invention will become clearer through the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram illustrating a heat dissipation system for a wind turbine according to an embodiment of the present invention.

FIG. 2 is a schematic view showing that a flow guide device of a heat dissipation system according to an embodiment of the present invention is installed in a through hole.

3 and 4 are side views showing FIG. 2.

BRIEF DESCRIPTION OF THE DRAWINGS

10: nacelle cover; 11: air inlet damper; 12: filter; 20: shroud; 30: wheel hub; 31: pitch control cabinet; 32: air outlet damper; 33: windshield; 34: temperature Sensor: 40: tower; 50: base; 60: generator; 61: generator fixed shaft; 61a: coupling protrusion; 62: sealing plate; 62a: support rod; 62b: connecting rod; 62c: handle; 70: blade 80: guide device; 81: support frame; 81a: support rod; 81b: fixed rod; 81c: connecting rod; 81d: reinforced rod; 82: fixed plate; 90: heat dissipation control cabinet.

detailed description

Embodiments according to the present invention will now be described in detail with reference to the accompanying drawings, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like components throughout.

As shown in FIG. 1, the wind turbine may include a nacelle cover 10, a shroud 20, a hub 30, a tower 40, a base 50, a generator 60, a blade 70, and the like. The nacelle cover 10 may form a nacelle for accommodating various components of a wind turbine. The base 50 may be provided in the nacelle, and may be formed with a base opening for operation and maintenance personnel to pass through. The blades 70 may be mounted on the hub 30 and rotate together with the hub 30. The shroud 20 may be installed on the front side of the nacelle for protecting the hub 30. Internal components such as a pitch control cabinet 31 may be installed in the hub 30 to control the operation of the wind turbine. The generator 60 may include a generator fixed shaft 61. The generator fixed shaft 61 may be a hollow shaft formed with a through hole, and the through hole is an original through hole for the operation and maintenance personnel of the generator fixed shaft 61. The nacelle cover 10, the shroud 20, the hub 30, the base 50, the generator 60 and the blade 70 may be supported by the tower 40.

The heat dissipation system according to the present invention may include an air inlet, an air outlet, and a flow guiding device 80. The air inlet may be formed on the nacelle cover 10. The air outlet may be formed on the air shroud 20. The deflector 80 may be installed in the through hole. The original through hole of the fixed shaft 61 of the generator can be used for installing the air guiding device 80 and can be used as a passage for air circulation without forming another air duct. The deflector 80 allows the air entering from the air inlet to flow into the hub 30 through the through hole, thereby dissipating heat from the wind turbine.

That is, the heat dissipation system according to the present invention may be an air-cooled system that uses external air to dissipate the wind power generator set. Specifically, the external air can flow into the cabin through the air inlet, and can flow into the hub 30 through the opening of the base and the through hole under the action of the air guiding device 80. The external air flowing into the hub 30 exchanges heat with the air in the hub 30, and the heat-exchanged air can be discharged through the air outlet, so that internal components such as the hub 30 and the pitch control cabinet 31 provided in the hub 30 can be exchanged. Cooling.

Alternatively, the air inlet may be formed at the tail portion (specifically, the side portion or the lower portion) of the cabin cover 10 to prevent rainwater or the like from flowing into the cabin. In addition, the air inlet may be provided with an air inlet damper 11 and a filter 12. The air inlet damper 11 may be installed at the air inlet of the nacelle cover 10 through a flange or the like, for example. The air inlet damper 11 may be an electric damper or a mechanical check valve, etc., and may be controlled in linkage with the flow guiding device 80. The air inlet damper 11 can be opened when the cooling system is activated to allow external air to flow into the cabin, and can be closed when the cooling system is stopped to prevent external air from flowing into the cabin. Preferably, the air inlet damper 11 may be opened before the deflector 80 is activated, and may be closed after the deflector 80 is stopped. The filter 12 may be mounted on the air inlet damper 11 through a flange or the like. The filter 12 can be used to filter particulates in the external air to avoid the introduction of dust to the internal environment and electrical control components of the wind turbine. The filter 12 can avoid contact with the outside air for a long time by closing the air inlet damper 11, so the service life of the filter 12 can be extended.

As described above, the air outlet may be formed on the air shroud 20. Specifically, the air outlet may be formed between the shroud 20 and the root of the blade 70. In other words, the air outlet can be an original gap between the shroud 20 and the root of the blade 70, and does not need to be formed separately.

In addition, an exhaust port may be formed on a portion of the hub 30 near the generator side, so that the air flowing into the hub 30 smoothly flows through the hub 30 to the air outlet. The air outlet may be an existing opening formed by the hub 30 for weight reduction. That is to say, the original opening on the hub 30 can be used as an air outlet without being formed separately. An air outlet damper 32 may be provided on the air outlet. The air outlet damper 32 may be mounted on the hub 30 through, for example, a flange or the like. Similar to the air inlet damper 11, the air outlet damper 32 can also be an electric damper or a mechanical check valve, etc., and can be controlled in conjunction with the air guiding device 80. The exhaust air damper 32 may be opened when the heat dissipation system is activated to allow air to flow out of the hub 30, and may be closed when the heat dissipation system is stopped to prevent outside air from entering the hub 30. Preferably, the air outlet damper 32 may be opened before the deflector 80 is activated, and may be closed after the deflector 80 is stopped.

In addition, in order to allow the air flowing into the hub 30 to smoothly flow through the hub 30 and be discharged through the air outlet, the front of the hub 30 may be provided with a windshield 33 for changing the air flow direction. The air whose flow direction is changed may be discharged through the air outlet through the pitch control cabinet 31 provided in the hub 30.

Optionally, in order to control the diversion device 80 and the air inlet damper 11 and the air outlet damper 32 in a coordinated manner, the heat dissipation system may further include a heat dissipation control cabinet 90. The heat dissipation control cabinet 90 may be disposed in the cabin to avoid raising the temperature in the hub 30, but is not limited thereto.

In addition, the heat dissipation system may further include a temperature sensor 34, and the temperature sensor 34 may be disposed in the hub 30 for sensing the temperature in the hub 30 in real time. The heat dissipation control cabinet 90 can control the opening of the air guiding device 80 and the air inlet air valve 11 and the air outlet air valve 32 according to the temperature value sensed by the temperature sensor 34.

When the temperature value detected by the temperature sensor 34 is higher than the set value, the heat dissipation control cabinet 90 can control the opening of the air guiding device 80 and the air inlet valve 11 and the air outlet valve 32. When the temperature value detected by the temperature sensor 34 is low, At the set value, the heat dissipation control cabinet 90 can control the diversion device 80 and the air inlet air valve 11 and the air outlet air valve 32 to be closed.

Here, the term “opening” includes controlling the opening degree of the air inlet damper 11 and the air outlet damper 32 and the operating power of the deflector 80 according to the temperature value sensed by the temperature sensor 34. For example, the above set value may be subdivided into a first set value and a second set value, and the second set value is greater than the first set value. When the temperature value sensed by the temperature sensor 34 is greater than the first set value and less than the second set value, the controller may control the air inlet air valve 11 and the air outlet air valve 32 to be partially opened and control the air guiding device 80 to operate in the first Power operation; when the temperature value sensed by the temperature sensor 34 is greater than the second set value, the controller can control the air inlet valve 11 and the air outlet valve 32 to be fully opened and control the deflector 80 to be larger than the first operating power. Second operating power operation. Therefore, appropriately adjusting the amount of air entering the hub 30 according to the temperature value sensed by the temperature sensor 34 can save energy. Of course, the above set values are not limited to the first set value and the second set value. The opening degree of the air inlet valve 11 and the air outlet valve 32 and the operating power of the deflector 80 can be adaptively designed according to actual conditions .

The deflector 80 may be a power component for the air flow of the heat dissipation system, and its role is to overcome the resistance of the entire heat dissipation airflow path to drive the air flow. Under the effect of the pressure difference, the external air is introduced into the hub 30 and is connected with the hub The heat exchanged air within 30 is discharged to the outside of the wind turbine. Preferably, the directions of the incoming air and the outgoing air of the air guiding device 80 can be the same to better guide the air flow. The deflector 80 may be a fan, and preferably, it may be an axial fan. The structure of the deflector 80 is not limited to this, and may be a centrifugal fan or the like, or other devices other than the fan, as long as the airflow can flow through the through hole and enter the hub 30.

The deflector 80 may be disposed in the through hole. Preferably, the deflector 80 may be disposed near the cabin side to facilitate installation and maintenance. For example, the air inlet of the air guiding device 80 may be flush with the end surface of the generator stator shaft 61 near the nacelle side. However, the installation position of the deflector 80 is not specifically limited, as long as the air entering from the air inlet can flow through the through hole and enter the hub 30.

The deflector 80 may be installed in the through hole by a mounting member. Preferably, the mounting member may be configured such that the deflector 80 is arranged coaxially with the through hole to more efficiently guide the air. Specifically, referring to FIGS. 2 to 4, the mounting member may include a support frame 81 and a fixing plate 82. The support bracket 81 may be provided at a lower portion of the through hole and fixed to an inner wall of the generator fixed shaft 61. The fixing plate 82 may be disposed on the supporting frame 81.

As an example, the support frame 81 may include two support rods 81a, two fixing rods 81b, and two connection rods 81c. The two fixing rods 81b may be oppositely disposed, the two connecting rods 81c may be oppositely disposed, and the two fixing rods 81b and the two connecting rods 81c are connected end to end to form a quadrangular frame. The first ends of the two support rods 81 a may be coupled to two vertices on the same side of the quadrangular frame, and the second ends of the two support rods 81 a may be fixed to two coupling protrusions 61 a on the inner wall of the stator shaft 61 of the generator. The deflector 80 may be fixed to the two fixing rods 81b by fasteners such as bolts.

The fixing plate 82 may be provided on the two fixing rods 81b. The fixing plate 82 may have an edge portion corresponding to an outer surface of the flow guiding device 80 to hold the flow guiding device 80. In addition, in order to enhance the stability of the support frame 81, the mounting member may further include two reinforcing rods 81d. The reinforcing rod 81d may connect the supporting rod 81a and the connecting rod 81c to form a triangle-like structure, and thus may enhance stability.

Although the specific structure of the mounting member has been described above, it is not limited thereto, and other mounting members capable of mounting the flow guiding device 80 in the through hole may be used.

In addition, in order to prevent the air flowing into the hub 30 from flowing back into the through hole, the heat dissipation system according to the present invention may further include a sealing plate 62. The sealing plate 62 may be installed in the stator shaft 61 of the generator, and may seal a portion of the radial section of the through hole other than the portion occupied by the flow guide device 80. Preferably, the sealing plate 62 may be flush with the air inlet of the air guiding device to facilitate installation and maintenance. By providing the sealing plate 62, the air flowing into the hub 30 can be prevented from flowing back into the through hole, and therefore, the heat radiation effect of the hub 30 can be improved.

Alternatively, the sealing plate 62 may be installed in the through hole through the support frame 81. The sealing plate 62 may be mounted to the support rod 81a. In addition, in order to stably mount the sealing plate 62, a sealing plate mounting bracket may be provided. The seal plate mounting frame may be arranged opposite to the support frame 81 in the circumferential direction of the stator shaft 61 of the generator, that is, mounted on an upper portion of the through hole.

As an example, the seal plate mounting bracket may include two support rods 62a and a connecting rod 62b. The first ends of the two support rods 62a may be connected to the connecting rod 62b, and the second ends of the two support rods 62a may be fixed to two coupling protrusions 61a on the inner wall of the fixed shaft 61 of the generator. The sealing plate 62 may be mounted on the two support rods 62a by a fastener.

As shown in FIGS. 3 and 4, the support frame 81 and the sealing plate mounting frame divide the cross section of the through hole into a plurality of sections, and the sealing plate 62 may have a plurality of corresponding sections to seal the radial section of the through hole in addition to the guide. The portion other than the portion occupied by the flow device 80. In addition, a handle 62c may be provided on the sealing plate 62 to facilitate installation and removal.

Although it has been described above that the sealing plate 62 is installed at the through hole through the support frame 81 and the sealing plate mounting frame, it is not limited thereto, and the sealing plate 62 may also be installed in other forms. For example, the sealing plate 62 may be formed with a coupling portion that can be combined with a coupling protrusion 61 a on an inner wall of the generator fixed shaft 61, thereby mounting the sealable plate 62 in the generator fixed shaft 61.

Hereinafter, the operation of the heat dissipation system according to the present invention will be described in detail with reference to FIG. 1, which illustrates the flow of air in the manner of arrows.

When the temperature value sensed by the temperature sensor 34 is higher than the set value, the heat dissipation control cabinet 90 sends out control signals for controlling the opening of the air guiding device 80 and the air inlet air valve 11 and the air outlet air valve 32. The air inlet damper 11 and the air outlet damper 32 are opened, and the deflector 80 starts to operate. After the deflector 80 is operated, external air can flow from the air inlet through the air inlet damper 11 and the filter 12 into the cabin and the base 50 due to the pressure difference between the front and back. The through hole of the generator stator shaft 61 flows into the hub 30. By the supercharging device 80, the air flowing out of the through hole of the stator shaft 61 of the generator can have a predetermined pressure and wind speed, and can directly flow to the wind deflector 33. By blocking the windshield 33, the airflow can be changed, so that the air outlet damper 32 that can flow through the hub 30 is discharged to the outside of the hub 30. The air discharged to the outside of the hub 30 may be discharged to the outside of the wind turbine generator through an air outlet formed between the shroud 20 and the root of the blade 70. The outside air can enter into the hub 30 and flow in the hub 30, and can exchange heat with the air in the hub 30. Therefore, the temperature of the air in the hub 30 can be reduced, so that the hub 30 and the Internal components such as the pitch control cabinet 31 dissipate heat.

When the temperature value sensed by the temperature sensor 34 is lower than the set value, the heat dissipation control cabinet 90 sends out control signals for controlling the closing of the air guiding device 80 and the air inlet valve 11 and the air outlet valve 32. The air inlet damper 11 and the air outlet damper 32 are closed, and the deflector 80 is stopped.

In addition, according to the heat dissipation system of the present invention, by forming an air inlet at the rear of the nacelle cover, rainwater and the like can be prevented from entering the nacelle, and the filter provided on the air inlet can be easily maintained and replaced.

In addition, according to the heat dissipation system of the present invention, by providing an air outlet damper on the hub, it is possible to prevent unfiltered external air from flowing into the hub when the heat dissipation system is not running.

In addition, according to the heat dissipation system of the present invention, external air can flow through the base, the generator stator shaft, and the hub after flowing into the cabin, so the engine compartment, the base, the generator stator shaft, and the hub can be radiated at the same time, and The electrical components and other components on the circulation path provide a suitable temperature environment, thereby extending the service life of the electrical components and other components and improving reliability.

Although the embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the present invention. However, it should be understood by those skilled in the art that these modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined by the claims.

Claims

A cooling system for a wind power generator set. The wind power generator set includes a nacelle cover (10), a shroud (20), a hub (30), and a generator fixed shaft (61). 61) A hollow shaft formed with a through hole, wherein the heat dissipation system includes:

An air inlet, which is formed on the nacelle cover (10);

An air outlet, which is formed on the shroud (20);

A deflector (80), which is installed in the through hole so that air entering from the air inlet passes through the through hole and enters the hub (30), To dissipate heat from the wind turbine.
The heat dissipation system according to claim 1, characterized in that the deflector (80) is disposed near a nacelle side of the wind turbine.
The heat dissipation system according to claim 1 or 2, wherein the flow guiding device (80) is installed in the through hole through a mounting member,

Wherein, the mounting member includes:

A support frame (81), which is fixed to an inner wall of the fixed shaft (61) of the generator and is used for supporting the flow guide device (80);

A fixing plate (82), the fixing plate (82) is arranged on the support frame (81), and is used for holding the flow guiding device (80).
The heat dissipation system according to claim 3, wherein the heat dissipation system further comprises a sealing plate (62), which is installed in the stator shaft (61) of the generator for sealing the housing. A portion of the radial section of the through hole other than a portion occupied by the flow guiding device (80) to prevent the air flowing into the hub (30) from flowing back.
The heat dissipation system according to claim 4, wherein the sealing plate (62) is fixed on the support frame (81).
The heat dissipation system according to claim 5, wherein the flow guiding device (80) is coaxially disposed with the through hole, and the support frame (81) is located at a lower portion of the through hole,

Wherein, a sealing plate mounting frame is installed on the upper part of the through hole, and the sealing plate (62) is also fixed on the sealing plate mounting frame.
The heat dissipation system according to claim 1, wherein the heat dissipation system further comprises a wind deflector (33), and the wind deflector (33) is disposed at the front of the hub (30) for changing The flow direction of air entering the hub (30) through the deflector (80).
The heat dissipation system according to claim 1, wherein the air inlet is formed at a tail portion of the nacelle cover (10), and is provided with an air inlet damper (11) and a filter (12).
The heat radiation system according to claim 8, characterized in that an exhaust port is formed on a portion of the hub (30) near the generator side of the wind turbine, and the exhaust port is provided with exhaust air Air vent valve (32).
The heat dissipation system according to claim 9, wherein the air outlet is formed between the shroud (20) and a root of a blade (70) of the wind turbine.
The heat dissipation system according to claim 10, wherein the heat dissipation system further comprises a heat dissipation control cabinet (90) and a temperature sensor (34), and the temperature sensor (34) is disposed in the hub (30),

Wherein, the heat dissipation control cabinet (90) controls the air inlet damper (11), the air outlet damper (32), and the flow guiding device based on a temperature value sensed by the temperature sensor (34). (80) Opening and closing.
A wind power generator set, characterized in that the wind power generator set comprises a heat dissipation system according to any one of claims 1 to 11.