Wind turbine generator hub and wind turbine generator

Abstract

The utility model provides a wind turbine generator hub and a wind turbine generator, and relates to the technical field of wind power generation. The wind turbine generator hub comprises a shell, a temperature sensor, a cooling medium circulating device and a control device, a central cavity is defined by the shell, and a main cooling channel is integrated in the shell; blades are connected to the outer side of the shell, the temperature sensor is arranged on the inner wall of the shell, and the cooling medium circulating device is arranged in the center cavity and communicates with the main cooling channel. The control equipment is arranged in the central cavity, the temperature sensor and the cooling medium circulating device are both electrically connected with the control equipment, and the control equipment is configured to control operation of the cooling medium circulating device according to detection data of the temperature sensor. The utility model provides a wind generating set hub and a wind generating set. The service life of the hub is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a wind turbine hub and a wind turbine generator set. Background Technology

[0002] In the field of wind power generation, the wind turbine hub, as a key component, plays a crucial role in connecting the blades to the main shaft and transmitting power. However, with the continuous increase in the single-unit capacity of wind turbines and the increasingly complex and diverse operating environments, the hub faces severe heat dissipation challenges during operation. Especially in high-temperature environments, such as hot desert regions and mountain wind farms under prolonged direct sunlight, heat accumulates rapidly inside the hub. If heat cannot be dissipated in a timely and effective manner, the hub temperature will rise sharply, leading to a reduction in the hub's service life. Utility Model Content

[0003] To address at least one of the problems mentioned in the background art, this utility model provides a wind turbine hub and a wind turbine generator set, extending the service life of the hub.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] In a first aspect, this utility model provides a wind turbine hub, including a housing, a temperature sensor, a cooling medium circulation device, and a control device, with a central cavity enclosed by the housing and a main cooling channel integrated inside the housing.

[0006] The outer side of the outer casing is connected to blades, the temperature sensor is set on the inner wall of the outer casing, and the cooling medium circulation device is set in the central cavity and connected to the main cooling channel.

[0007] The control device is located in the central cavity. The temperature sensor and the cooling medium circulation device are both electrically connected to the control device. The control device is configured to control the operation of the cooling medium circulation device based on the detection data of the temperature sensor.

[0008] As an alternative implementation, the main cooling channels are distributed in a ring or spiral shape along the circumference of the outer casing.

[0009] As an optional implementation, it also includes multiple sub-cooling channels, which are arranged radially along the housing, with the first end of the sub-cooling channel connected to the main cooling channel and the second end of the sub-cooling channel extending toward the blade.

[0010] As an optional implementation, it also includes a bearing, the outer ring of which is mounted on the housing, and blades are mounted on the inner ring of the bearing. The outer ring of the bearing has a cooling cavity, and a second end of a cooling channel extends into the cooling cavity.

[0011] As an alternative implementation, the temperature sensor is positioned opposite the bearing in the radial direction of the housing.

[0012] As an optional implementation, it also includes an air inlet and an air outlet, which are formed in the housing and penetrate the housing radially, and both the air inlet and the air outlet are connected to the cooling medium circulation device.

[0013] As an optional implementation, a filter assembly is also included, with both the air inlet and the air outlet equipped with a filter assembly.

[0014] As an alternative implementation, the filter assembly includes a filter screen, which is used to filter at least dust and particulate impurities.

[0015] As an optional implementation, the filtration assembly also includes a salt spray filter, which is located inside the filter screen in the radial direction of the housing.

[0016] Secondly, this utility model also provides a wind turbine generator set, including the wind turbine hub mentioned in the first aspect.

[0017] The wind turbine hub provided by this utility model includes a shell, a temperature sensor, a cooling medium circulation device, and a control device. The shell forms a central cavity, and a main cooling channel is integrated inside the shell. Blades are connected to the outer side of the shell. The temperature sensor is located on the inner wall of the shell. The cooling medium circulation device is located in the central cavity and is connected to the main cooling channel. The control device is located in the central cavity. Both the temperature sensor and the cooling medium circulation device are electrically connected to the control device. The control device is configured to control the operation of the cooling medium circulation device based on the detection data of the temperature sensor.

[0018] The wind turbine hub provided by this utility model features a temperature sensor that can accurately monitor the temperature of the inner wall of the outer shell in real time when the internal temperature of the hub rises. The sensor transmits the data to the control equipment, which quickly activates the cooling medium circulation device according to a preset program and controls its operating power as needed. The cooling medium circulation device is located in the central cavity and connected to the main cooling channel integrated within the outer shell. The cooling medium circulates within the channel, rapidly removing heat from the hub. This process effectively prevents a rapid increase in hub temperature, avoiding material aging, deformation, and lubricant failure caused by high temperatures. It strongly ensures the structural stability of the hub, reduces wear, extends the hub's service life, avoids frequent downtime due to malfunctions, and lowers maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a wind turbine hub provided for an embodiment of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100-Wheel Hub;

[0024] 110 - Outer casing;

[0025] 112 - Central cavity;

[0026] 113 - Main cooling channel;

[0027] 114-section cooling channel;

[0028] 120-blade;

[0029] 130 - Temperature sensor;

[0030] 140 - Cooling medium circulation device;

[0031] 150 - Air inlet;

[0032] 160 - Air outlet;

[0033] 170 - Filter assembly;

[0034] 171 - Filter screen;

[0035] 172 - Salt spray filter. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0038] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0040] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0041] The wind turbine hub, as a key component, plays a crucial role in connecting the blades to the main shaft and transmitting power. However, with the continuous increase in the capacity of individual wind turbines and the increasingly complex and diverse operating environments, the hub faces severe heat dissipation challenges during operation. Especially in high-temperature environments, such as hot desert regions and mountain wind farms under prolonged direct sunlight, heat accumulates rapidly inside the hub. If heat cannot be dissipated effectively and in a timely manner, the hub temperature will rise sharply, leading to a reduction in the hub's service life.

[0042] In view of this, the present invention provides a wind turbine hub, including a shell, a temperature sensor, a cooling medium circulation device, and a control device. The shell forms a central cavity, within which a main cooling channel is integrated. Blades are connected to the outer side of the shell. The temperature sensor is located on the inner wall of the shell. The cooling medium circulation device is located in the central cavity and communicates with the main cooling channel. The control device is located in the central cavity, and both the temperature sensor and the cooling medium circulation device are electrically connected to the control device. The control device is configured to control the operation of the cooling medium circulation device based on the detection data from the temperature sensor. When the internal temperature of the hub rises, the temperature sensor in the system can accurately monitor the temperature of the inner wall of the shell in real time and transmit the data to the control device. The control device quickly starts the cooling medium circulation device according to a preset program and controls the operating power of the cooling medium circulation device as needed. The cooling medium circulation device is located in the central cavity and communicates with the main cooling channel integrated in the shell. The cooling medium can circulate within the channel, quickly removing heat from the hub. This process effectively avoids a rapid increase in hub temperature, preventing problems such as material aging, deformation, and lubricant failure caused by high temperatures, effectively ensuring the structural stability of the hub, reducing wear, and extending the service life of the hub.

[0043] Figure 1 A schematic diagram of a wind turbine hub provided for an embodiment of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0044] You can refer to this. Figure 1 and Figure 2 This utility model provides a wind turbine hub 100, including a housing 110, a temperature sensor 130, a cooling medium circulation device 140, and a control device. The housing forms a central cavity 112, and a main cooling channel 113 is integrated inside the housing 110. Blades 120 are connected to the outer side of the housing 110. The temperature sensor 130 is disposed on the inner wall of the housing 110. The cooling medium circulation device is disposed in the central cavity 112 and communicates with the main cooling channel 113. The control device is disposed in the central cavity 112. The temperature sensor 130 and the cooling medium circulation device 140 are both electrically connected to the control device. The control device is configured to control the operation of the cooling medium circulation device 140 according to the detection data of the temperature sensor 130.

[0045] The wind turbine hub 100 provided in this embodiment of the invention features a temperature sensor 130 that can accurately monitor the temperature of the inner wall of the outer shell 110 in real time when the internal temperature of the hub 100 rises. The sensor transmits the data to the control device, which quickly starts the cooling medium circulation device 140 according to a preset program and controls its operating power as needed. The cooling medium circulation device 140 is located in the central cavity 112 and connected to the main cooling channel 113 integrated within the outer shell 110. The cooling medium circulates within the channel, rapidly removing heat from the hub 100. This process effectively prevents a rapid increase in the temperature of the hub 100, preventing material aging, deformation, and lubricant failure caused by high temperatures. It strongly ensures the structural stability of the hub 100, reduces wear, extends its service life, avoids frequent downtime due to malfunctions, and reduces maintenance costs.

[0046] In the above embodiments, the main cooling channel 113 can be distributed in a ring or spiral shape along the circumference of the outer shell 110. The ring or spiral layout ensures that the cooling medium fully and evenly covers the outer shell 110 of the hub 100 when flowing through the channel, eliminating heat loss zones and allowing heat to be efficiently absorbed and carried away from all directions of the hub 100, preventing localized overheating. Compared to traditional straight or simple branched channels, this circumferential structure naturally fits the circular contour of the hub 100, providing a higher degree of fit and a longer cooling path. This allows the cooling medium to remain within the hub 100 for a longer period, resulting in more thorough heat exchange and significantly improved heat dissipation efficiency. Furthermore, the relatively regular geometry of the ring and spiral channels is easily achieved through casting, mold forming, and other processes, ensuring high precision while reducing the complexity and cost of manufacturing. In addition, when dealing with complex operating conditions, such as when the wind turbine needs to adjust the blade angle 120° due to frequent changes in wind direction, this structure can still stably perform its heat dissipation function, providing reliable temperature protection for the hub 100 and enhancing the overall environmental adaptability and reliability of the wind turbine.

[0047] In the above embodiments, multiple sub-cooling channels 114 may also be included. The sub-cooling channels 114 are arranged radially along the outer shell 110. The first end of each sub-cooling channel 114 is connected to the main cooling channel 113, and the second end extends towards the blade 120. The first end of each sub-cooling channel 114 is connected to the main cooling channel 113, enabling efficient reception of the cold energy carried by the cooling medium in the main cooling channel 113. Due to its radial arrangement, this cold energy can be accurately and directly transported to the connection points of the blade 120. As a component directly in contact with the external environment, the blade 120 experiences significant heat accumulation under the influence of factors such as sunlight and airflow impact. The extension of the sub-cooling channels 114 towards the blade 120 allows for timely heat dissipation from critical areas such as the blade root, effectively preventing damage to the blade 120 due to overheating, ensuring the structural integrity and mechanical stability of the blade 120, and thus improving the overall operational safety of the wind turbine. The sub-cooling channels 114 and the main cooling channel 113 cooperate to construct a comprehensive, three-dimensional heat dissipation network. The main cooling channel 113 focuses on heat dissipation for the large-area, global hub 100 outer shell 110, while the secondary cooling channels 114 focus on enhancing heat dissipation in key localized areas connected to the blades 120. Working together, these two systems ensure more even and efficient heat dissipation within the hub 100. In high-temperature environments or under high-load operation, this three-dimensional heat dissipation architecture can respond quickly and adjust the temperature of various components in a timely manner, preventing component failures caused by localized heat accumulation, extending the service life of critical wind turbine components, reducing maintenance frequency and costs, and ensuring continuous and stable power generation from the wind turbine.

[0048] In the above embodiments, a bearing may also be included. The outer ring of the bearing is mounted on the housing 110, and the blade 120 is mounted on the inner ring of the bearing. The outer ring of the bearing has a cooling cavity, and the second end of the cooling channel 114 extends into the cooling cavity. It is understood that the bearing, as a key component connecting the blade 120 and the hub 100 housing 110, operates under extremely harsh conditions. It must withstand the enormous radial and axial forces generated by the rotation of the blade 120 and is prone to generating heat due to friction during operation. With the outer ring mounted on the housing 110 and the inner ring connected to the blade 120, when the second end of the cooling channel 114 extends into the cooling cavity of the bearing outer ring, the cooling medium can precisely reach the area where the bearing heats up most. This effectively reduces the high heat generated by friction on the bearing outer ring, preventing deformation and accelerated wear due to overheating, ensuring the roundness and dimensional accuracy of the bearing outer ring, maintaining its stable support performance, thereby ensuring that the blade 120 can rotate smoothly and accurately, and improving the reliability of the wind turbine operation.

[0049] In the above embodiment, the temperature sensor 130 can be positioned opposite the bearing along the radial direction of the outer casing 110. It is understood that the bearing is one of the key heat sources during the operation of the wind turbine, and its frictional heat generation directly affects the stability and lifespan of the entire system. With the temperature sensor 130 radially opposite the bearing, it can directly and accurately capture changes in the heat dissipated by the bearing, reflecting the real-time temperature status of the bearing. If the bearing temperature rises abnormally, whether due to overload, poor lubrication, or obstructed heat dissipation, the sensor can quickly detect it and transmit the data to the control equipment, buying valuable time for timely cooling measures, effectively preventing bearing damage due to overheating, and ensuring the stable operation of the wind turbine.

[0050] The above embodiments may further include an air inlet 150 and an air outlet 160, which are formed in the outer casing 110 and penetrate radially through it. Both the air inlet 150 and the air outlet 160 are connected to the cooling medium circulation device 140. When the cooling medium circulation device 140 is running, outside cold air can be continuously drawn in through the air inlet 150 and directly participate in the heat dissipation process inside the hub 100. After passing through the main cooling channel 113, the sub-cooling channel 114, and exchanging heat with various components of the hub 100, the cold air becomes hot air and is discharged from the air outlet 160. This rapid air exchange greatly accelerates the heat dissipation rate, especially in high-temperature environments or when the wind turbine is operating under high load, quickly cooling the hub 100 and ensuring that its operating temperature is within a safe range.

[0051] The above embodiments may also include a filter assembly 170, with both the air inlet 150 and the air outlet 160 equipped with the filter assembly 170. The filter assembly 170 can intercept various impurities such as dust and sand particles, preventing blockage of the cooling channels, ensuring stable and smooth flow of the cooling medium and air, allowing the heat dissipation system to operate normally at all times, and enabling the hub 100 to dissipate heat continuously and efficiently. Furthermore, it can prevent impurities from adhering to critical components such as bearings and blade 120 connection points, reducing bearing wear and preventing damage to the blades 120 due to uneven stress caused by dust accumulation, significantly reducing the probability of component failure, thereby extending the service life of components such as bearings and blades 120, and reducing maintenance costs. In addition, it can be customized according to the environmental characteristics of different regions such as deserts, coastal areas, and industrial pollution areas. For example, a fine filter 171 can be used in desert areas to combat sandstorms, while salt-resistant materials can be used in coastal areas to resist salt, enabling the wind turbine to cope with harsh conditions such as sandstorms, saline-alkali soil, and industrial pollution, improving environmental adaptability.

[0052] In the above embodiments, the filter assembly 170 may include a filter screen 171, which is used to filter at least dust and particulate impurities. The filter screen 171 can efficiently intercept a large amount of dust, sand, and other fine particles in the air, preventing the cooling channels from being blocked and ensuring that the cooling medium can circulate smoothly and unimpeded in the main cooling channel 113 and the sub-cooling channels 114, maintaining the normal operation of the cooling medium circulation device 140. The filter screen 171 has a relatively simple structure and is easy to install. During manufacturing, the filter screen 171 can be integrated with the air inlet 150 and the air outlet 160, and fixed by simple connection methods such as slots and bolts, reducing the complexity of production and manufacturing. During the installation phase, operators do not need complex professional skills and can quickly complete the assembly of the filter screen 171 by following a simple installation guide, improving the installation efficiency of the entire wind turbine unit and creating favorable conditions for the rapid commissioning of the project.

[0053] In the above embodiments, the filter assembly 170 may further include a salt spray filter 172, which is located inside the filter screen 171 in the radial direction along the housing 110. It is understood that in coastal areas or wind farms near the ocean, the air is filled with high concentrations of salt spray. Salt spray is highly corrosive, and if it enters the hub 100 cooling system directly without treatment, it will cause serious corrosion to many internal components such as bearings, the inner walls of cooling channels, and electrical components. The salt spray filter 172, located inside the filter screen 171, allows outside air to be preliminarily filtered to remove dust, particulate matter, and other impurities. The salt spray filter 172 then further functions, precisely capturing salt spray particles and preventing them from penetrating deeper into the interior. This effectively protects the high-precision surfaces of the bearings from corrosion, maintaining their good rotational performance; protects electrical components from salt spray damage, ensures stable operation of the control system, and greatly extends the service life of these critical components. Placing the salt spray filter 172 inside the filter screen 171 facilitates modular design during manufacturing based on their functional characteristics. For example, the filter screen 171 can be fixed to the outer layer of the air inlet 150 and air outlet 160 first, and then the salt spray filter 172 can be installed in the corresponding position inside. Simple connection methods such as slots and bolts reduce manufacturing complexity and improve production efficiency. During installation, operators only need to follow the established procedure sequentially, simplifying the operation, reducing installation errors, and ensuring that the entire filter assembly 170 is quickly and accurately assembled, facilitating the efficient operation of the wind turbine.

[0054] In addition, this utility model also provides a wind turbine generator set, including the wind turbine hub 100 in the above embodiment. The wind turbine hub 100 includes a housing 110, a temperature sensor 130, a cooling medium circulation device 140, and a control device. The housing forms a central cavity 112, and the housing 110 integrates a main cooling channel 113. Blades 120 are connected to the outer side of the housing 110. The temperature sensor 130 is disposed on the inner wall of the housing 110. The cooling medium circulation device is disposed in the central cavity 112 and communicates with the main cooling channel 113. The control device is disposed in the central cavity 112, and both the temperature sensor 130 and the cooling medium circulation device 140 are electrically connected to the control device. When the internal temperature of the hub 100 rises, the temperature sensor 130 in the system can accurately monitor the temperature of the inner wall of the outer shell 110 in real time and transmit the data to the control device. The control device quickly starts the cooling medium circulation device 140 according to the preset program and controls the working power of the cooling medium circulation device 140 as needed. The cooling medium circulation device 140 is located in the central cavity 112 and is connected to the main cooling channel 113 integrated in the outer shell 110. The cooling medium can circulate in the channel and quickly remove the heat from the hub 100. This process effectively avoids a rapid increase in the temperature of the hub 100, prevents problems such as material aging, deformation, and lubricant failure caused by high temperature, strongly ensures the structural stability of the hub 100, reduces wear, extends the service life of the hub 100, avoids frequent downtime due to failure, reduces the maintenance cost of the wind turbine, and improves the power generation efficiency of the wind turbine.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wind turbine hub, characterized in that, The wind turbine hub comprises a shell, a temperature sensor, a cooling medium circulating device and a control device, wherein the shell encloses a central cavity, and a main cooling channel is integrated in the shell; A vane is connected to the outside of the shell, the temperature sensor is arranged on the inner wall of the shell, the cooling medium circulating device is arranged in the central cavity and communicates with the main cooling channel; The control device is arranged in the central cavity, the temperature sensor and the cooling medium circulating device are electrically connected to the control device, and the control device is configured to control the operation of the cooling medium circulating device according to the detection data of the temperature sensor.

2. The wind turbine hub of claim 1, wherein, The main cooling channel is distributed in a ring shape or a spiral shape along the circumference of the shell.

3. The wind turbine hub of claim 2, wherein, A plurality of branch cooling channels are arranged along the radial direction of the shell, the first ends of the branch cooling channels communicate with the main cooling channel, and the second ends of the branch cooling channels extend to the vane.

4. The wind turbine hub of claim 3, wherein, A bearing is further included, the outer ring of the bearing is mounted on the shell, the vane is mounted on the inner ring of the bearing, the outer ring of the bearing has a cooling cavity, and the second ends of the branch cooling channels extend to the cooling cavity.

5. The wind turbine hub of claim 4, wherein, In the radial direction of the shell, the temperature sensor is arranged at a position opposite to the bearing.

6. The wind turbine hub of claim 5, wherein, An air inlet and an air outlet are further included, the air inlet and the air outlet are arranged on the shell and extend through the shell in the radial direction, and the air inlet and the air outlet communicate with the cooling medium circulating device.

7. The wind turbine hub of claim 6, wherein, A filter assembly is further included, and the air inlet and the air outlet are both provided with the filter assembly.

8. The wind turbine hub of claim 7, wherein, The filter assembly comprises a filter screen, and the filter screen is used at least for filtering dust and particulate impurities.

9. The wind turbine hub of claim 8, wherein, The filter assembly further comprises a salt mist filter, and in the radial direction of the shell, the salt mist filter is located inside the filter screen.

10. A wind power unit, characterized in that The wind turbine hub comprises the wind turbine hub according to any one of claims 1-9.

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