Floating power generation platform

Abstract

The invention provides a floating power generation platform. The floating power generation platform comprises a floating air bag which is provided with a speed increasing channel; the wind wheel unit is arranged in the speed increasing channel, the wind wheel unit comprises a supporting assembly, a first wind wheel assembly and a second wind wheel assembly, the first wind wheel assembly and the second wind wheel assembly are both movably connected with the supporting assembly, and one part of the supporting assembly is connected with the floating air bag; the first wind wheel assembly and the second wind wheel assembly are arranged at intervals in the extending direction of the speed increasing channel. The problem that in the prior art, a floating power generation platform is low in wind energy utilization rate is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power equipment, and in particular to a floating power generation platform. Background Art

[0002] With the continuous growth of global energy demand, traditional fossil energy faces the challenges of depletion and environmental problems. Wind energy, as a clean and renewable energy source, has become an important direction for global energy transformation. However, ground wind power is affected by terrain, buildings, vegetation and turbulence in the atmosphere. The wind speed changes frequently and with large amplitude. The daily fluctuation of wind speed in wind farms can reach more than 80%, which leads to unstable output power of wind turbines and makes it difficult to achieve continuous and efficient power generation. In the altitude range of 500 meters to 10,000 meters, the wind flow direction is stable, and the higher the altitude, the greater the wind intensity and the better the stability. At the bottom of the stratosphere at 10,000 meters, the daily fluctuation of wind speed is theoretically less than 20%, and the annual power generation time can reach more than 6,500 hours, which is nearly 3 times that of ground wind power. Therefore, the development of high-altitude wind power can obtain highly stable renewable energy power, which can effectively solve the problem of volatility of traditional wind power. However, most of the existing high-altitude wind power generation platforms use single wind turbines for power generation, and the utilization rate of high-altitude wind energy is low.

[0003] In other words, existing floating power generation platforms have the problem of low wind energy utilization rate. Summary of the invention

[0004] The main purpose of the present invention is to provide a floating power generation platform to solve the problem of low wind energy utilization rate of floating power generation platforms in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a floating power generation platform, comprising: a floating air bag, the floating air bag having a speed-increasing channel; a wind turbine unit, the wind turbine unit being arranged in the speed-increasing channel, the wind turbine unit comprising a supporting assembly, a first wind wheel assembly and a second wind wheel assembly, the first wind wheel assembly and the second wind wheel assembly are both movably connected to the supporting assembly, a part of the supporting assembly is connected to the floating air bag, and the first wind wheel assembly and the second wind wheel assembly are spaced apart along the extension direction of the speed-increasing channel.

[0006] Furthermore, the wind turbine assembly further comprises at least two yaw bearings, at least one yaw bearing is arranged at the connection between the first wind rotor assembly and the support assembly, and at least another yaw bearing is arranged at the connection between the second wind rotor assembly and the support assembly.

[0007] Further, the rotation angle of the yaw bearing is greater than 0 degree and less than or equal to 180 degrees.

[0008] Furthermore, the first wind rotor assembly and the second wind rotor assembly both include: a nacelle, which is connected to the yaw bearing; a wind rotor hub, which is connected to one end of the nacelle; a plurality of variable pitch bearings, which are arranged at circumferential intervals around the wind rotor hub; and a plurality of blades, which are connected to the plurality of variable pitch bearings in a one-to-one correspondence, and the variable pitch bearings drive the corresponding blades to rotate.

[0009] Furthermore, the maximum rotation angle of the pitch bearing is greater than or equal to 180 degrees and less than or equal to 360 degrees.

[0010] Furthermore, the pitch bearing drives the blades to rotate at an angle greater than or equal to 0 degrees and less than or equal to 270 degrees.

[0011] Furthermore, the support assembly includes: a support body, a portion of the support body is located in the floating air bag; a first support frame, one end of the first support frame is connected to the support body, and the other end of the first support frame is connected to the first wind wheel assembly; a second support frame, one end of the second support frame is connected to the support body, and the other end of the second support frame is connected to the second wind wheel assembly, and the extension direction of the first support frame intersects with the extension direction of the second support frame.

[0012] Furthermore, the angle between the first support frame and the second support frame is greater than or equal to 30 degrees and less than or equal to 60 degrees.

[0013] Furthermore, a ratio of a distance between one end of the first support frame away from the support body and one end of the second support frame away from the support body to a length of the speed increasing channel is greater than or equal to 0.5 and less than or equal to 0.9.

[0014] Furthermore, the ratio of the maximum outer diameter of the first wind wheel assembly to the minimum inner diameter of the speed-increasing channel is greater than or equal to 0.93 and less than or equal to 0.97; and / or along the extension direction of the speed-increasing channel, the inner diameter of the speed-increasing channel first decreases and then increases.

[0015] Furthermore, the floating air bag includes: an air bag body, which is cylindrical and has a speed-increasing channel, and the cross-sectional area surrounded by the outer peripheral surface of the air bag body increases first and then decreases from the first end to the second end; at least two air bag straight wings, which are arranged at intervals around the circumference of the air bag body; and an auxiliary air bag, which is arranged at the second end of the air bag body.

[0016] By applying the technical solution of the present invention, a floating power generation platform includes an air bag and a wind turbine unit, wherein the air bag has an increasing speed channel; the wind turbine unit is arranged in the increasing speed channel, and the wind turbine unit includes a supporting assembly, a first wind wheel assembly and a second wind wheel assembly, wherein the first wind wheel assembly and the second wind wheel assembly are both movably connected to the supporting assembly, a part of the supporting assembly is connected to the air bag, and the first wind wheel assembly and the second wind wheel assembly are spaced apart along the extension direction of the increasing speed channel.

[0017] By setting a speed-increasing channel in the floating air bag, the speed-increasing channel guides the natural wind into a relatively narrow space, naturally increases the wind speed, and provides stronger power for the wind turbine unit. The speed-increasing channel can guide the wind flow, reduce the turbulence and direction change of the air flow, so that the wind turbine unit can operate in a more stable and predictable wind force, and improve the power generation efficiency and system stability. By setting the first wind wheel assembly and the second wind wheel assembly along the extension direction of the speed-increasing channel, with an appropriate interval between the two, while effectively utilizing the space in the speed-increasing channel, the air flow impact of the previous wind wheel assembly on the next wind wheel assembly can also be reduced, thereby avoiding a decrease in wind energy utilization.

[0018] The active connection design between the support assembly and the first wind rotor assembly and the second wind rotor assembly enables the system to automatically adjust the angle and position of the first wind rotor assembly and the second wind rotor assembly under different wind conditions, so as to capture wind energy in the best state and maintain high power generation efficiency under different meteorological conditions, which is conducive to improving power generation efficiency. The support assembly not only provides the necessary structural support for the first wind rotor assembly and the second wind rotor assembly, but also forms a stable connection with the floating air bag, which ensures the stability and safety of the entire floating power generation platform at high altitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram showing the structure of a floating air bag according to an optional embodiment of the present invention is shown;

[0021] Figure 2 A schematic structural diagram of a wind turbine assembly according to an optional embodiment of the present invention is shown;

[0022] Figure 3 A schematic structural diagram of a wind turbine assembly according to another optional embodiment of the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Floating air bag; 11. Speed ​​increasing channel; 12. Air bag body; 13. Air bag straight wing; 14. Auxiliary air bag; 141. Ring frame; 142. Connecting ribs; 20. Wind turbine assembly; 21. Support assembly; 211. Support body; 212. First support frame; 213. Second support frame; 22. First wind rotor assembly; 23. Second wind rotor assembly; 24. Yaw bearing; 25. Nacelle; 26. Wind rotor hub; 28. Blades. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0028] In order to solve the problem of low wind energy utilization rate in the floating power generation platform in the prior art, the present invention provides a floating power generation platform.

[0029] like Figures 1 to 3 As shown, the floating power generation platform includes a floating air bag 10 and a wind turbine assembly 20. The floating air bag 10 has a speed-increasing channel 11. The wind turbine assembly 20 is arranged in the speed-increasing channel 11. The wind turbine assembly 20 includes a supporting assembly 21, a first wind wheel assembly 22 and a second wind wheel assembly 23. The first wind wheel assembly 22 and the second wind wheel assembly 23 are both movably connected to the supporting assembly 21, a part of the supporting assembly 21 is connected to the floating air bag 10, and the first wind wheel assembly 22 and the second wind wheel assembly 23 are spaced apart along the extension direction of the speed-increasing channel 11.

[0030] By setting a speed-increasing channel 11 in the floating air bag 10, the speed-increasing channel 11 guides the natural wind into a relatively narrow space, naturally increases the wind speed, and provides a stronger power for the wind turbine unit 20. The speed-increasing channel 11 can guide the wind flow, reduce the turbulence and direction change of the air flow, so that the wind turbine unit 20 operates in a more stable and predictable wind force, and improve the power generation efficiency and system stability. By setting the first wind wheel assembly 22 and the second wind wheel assembly 23 along the extension direction of the speed-increasing channel 11, with an appropriate interval between the two, while effectively utilizing the space in the speed-increasing channel 11, it is also possible to reduce the airflow impact of the previous wind wheel assembly on the next wind wheel assembly, thereby avoiding a decrease in wind energy utilization.

[0031] The movable connection design between the support assembly 21 and the first wind rotor assembly 22 and the second wind rotor assembly 23 enables the system to automatically adjust the angle and position of the first wind rotor assembly 22 and the second wind rotor assembly 23 under different wind conditions, so as to capture wind energy in the best state and maintain a high power generation efficiency under different meteorological conditions, which is conducive to improving power generation efficiency. The support assembly 21 not only provides the necessary structural support for the first wind rotor assembly 22 and the second wind rotor assembly 23, but also forms a stable connection with the floating air bag 10, which ensures the stability and safety of the entire floating power generation platform in the air.

[0032] In addition, the wind turbine unit 20 adopts a dual wind rotor assembly structure, which can capture wind energy more efficiently under different wind directions and wind speeds. For example, the first wind rotor assembly 22 can capture positive wind, and the second wind rotor assembly 23 can continue to effectively utilize wind energy by utilizing the relative position difference between it and the first wind rotor assembly 22 when the wind direction changes, thereby improving the wind energy utilization rate of the overall system.

[0033] By setting a speed-increasing channel 11 in the floating air bag 10, a wind turbine unit 20 having a first wind rotor assembly 22 and a second wind rotor assembly 23 is set in the speed-increasing channel 11. This design can capture high-altitude wind power that is not available on the ground, so that the floating power generation platform can still maintain high efficiency in low and medium wind speed environments.

[0034] In some alternative embodiments, see Figure 2 and Figure 3 The wind turbine assembly 20 further includes at least two yaw bearings 24 , at least one yaw bearing 24 is disposed at a connection between the first wind rotor assembly 22 and the support assembly 21 , and at least another yaw bearing 24 is disposed at a connection between the second wind rotor assembly 23 and the support assembly 21 .

[0035] The setting of the yaw bearing 24 enables the first wind rotor assembly 22 and the second wind rotor assembly 23 to rotate freely on the horizontal plane, ensuring that the first wind rotor assembly 22 and the second wind rotor assembly 23 can always maintain the optimal angle with the wind direction, avoiding the loss of wind energy caused by wind direction deviation, so that more effective wind power can be obtained under the same wind conditions, and the power generation can be increased. Even in the case of rapid changes in wind direction, the first wind rotor assembly 22 and the second wind rotor assembly 23 can quickly adjust to the optimal angle, and the first wind rotor assembly 22 and the second wind rotor assembly 23 can dynamically maintain the balance state of the system, improve the wind energy capture efficiency, reduce the energy waste caused by unbalanced torque, and further optimize the energy conversion efficiency. In addition, the first wind rotor assembly 22 and the second wind rotor assembly 23 can quickly respond to changes in wind direction, reduce the friction and loss of the blades 28 of the wind rotor assembly in a non-optimal wind state, extend the service life of the equipment, and reduce maintenance costs.

[0036] Since the first wind rotor assembly 22 and the second wind rotor assembly 23 each use an independent yaw bearing 24, the first wind rotor assembly 22 and the second wind rotor assembly 23 can yaw independently, which reduces the mutual interference between the first wind rotor assembly 22 and the second wind rotor assembly 23 when the wind direction changes, especially when the windward side and the leeward side are switched, which can avoid the influence of sudden changes in airflow on power generation efficiency. Since the first wind rotor assembly 22 and the second wind rotor assembly 23 can rotate independently, it means that the control system can adjust the wind angles of the first wind rotor assembly 22 and the second wind rotor assembly 23 respectively to achieve more precise wind energy utilization control. The first wind rotor assembly 22 and the second wind rotor assembly 23 can also be coordinated through a precise control system. For example, when the first wind rotor assembly 22 captures frontal wind energy, the second wind rotor assembly 23 can be adjusted to capture lateral or reverse wind energy, thereby improving the coordination and efficiency of the overall system.

[0037] In addition, the first wind rotor assembly 22 and the second wind rotor assembly 23 can rotate independently of the support assembly 21, reducing the direct impact of wind direction changes on the entire floating power generation platform, enhancing the stability and safety of the floating power generation platform, and reducing the risk of shaking or damage to the floating power generation platform due to sudden changes in wind direction. The integration of the yaw bearing 24 simplifies the wind direction adjustment mechanism of the floating power generation platform, avoids the complex overall steering system in traditional wind power generation, reduces the complexity and difficulty of control, and improves the controllability and ease of operation of the system. The intelligent steering function of the yaw bearing 24, combined with the wind speed sensor and automatic control system, can adjust the direction of the wind turbine unit 20 in real time to ensure that the blades 28 always face the strongest wind direction. This feature is particularly critical in areas with abundant wind resources but unstable wind direction, such as high above the sea and high above the mountains, which can significantly improve power generation efficiency and stability and reduce energy waste.

[0038] In summary, the present application sets a yaw bearing 24 at the connection between the first wind rotor assembly 22, the second wind rotor assembly 23 and the support assembly 21, thereby achieving rapid adaptation of the first wind rotor assembly 22 and the second wind rotor assembly 23 to changes in wind direction, improving the wind energy capture efficiency, and enhancing the stability and safety of the system in a dynamic wind environment. At the same time, it also optimizes the energy conversion efficiency, reduces operation and maintenance costs, and provides a solid technical foundation for the efficient application of high-altitude wind power generation technology.

[0039] In some optional embodiments, the rotation angle of the yaw bearing 24 is greater than 0 degrees and less than or equal to 180 degrees. The maximum angle that the yaw bearing 24 can rotate is set to 180 degrees, which means that the first wind rotor assembly 22 and the second wind rotor assembly 23 can track the wind direction changes within a semicircle range, and the yaw bearing 24 has a full 180-degree steering capability, providing a sufficiently wide wind direction tracking range. This enables the wind power generation system to adapt to a wider range of directional wind resources. No matter how the wind direction changes, the system can quickly adjust to the optimal orientation, thereby improving the efficiency of wind energy capture. Limiting the rotation angle of the yaw bearing 24 to less than or equal to 180 degrees avoids the "full circle" rotation that may occur when the first wind rotor assembly 22 and the second wind rotor assembly 23 track the wind direction, that is, the steering of more than 180 degrees. Full circle rotation not only increases the complexity and energy consumption of the system, but also may cause potential mechanical failures such as cable entanglement and uneven structural stress, reducing the safety and life of the system. Therefore, the 180-degree rotation limit simplifies the system design, reduces the risk of failure, and improves the safety and reliability of operation.

[0040] In high-altitude environments, sudden changes in wind speed and direction may have significant effects on the floating power platform, such as yaw or swing. By limiting the rotation range of the yaw bearing 24, the system can make quick and gentle adjustments when the wind direction changes, avoiding the unstable state caused by large turns. This design helps to maintain the stability of the floating power platform, reduce the impact of wind on the structure of the floating power platform, and extend the service life of the floating power platform. During the rotation of the yaw bearing 24, the system needs to consume a certain amount of energy to drive its turning. Limiting the rotation angle to 180 degrees can reduce the number and angle of unnecessary turns, thereby reducing energy consumption and optimizing energy management strategies. Especially under the condition of limited power supply of the floating power platform, this energy-saving design is particularly important and helps to improve the energy efficiency ratio of the entire system.

[0041] In addition, the rotation angle of the yaw bearing 24 is limited to 180 degrees, which can also simplify the control algorithm of the wind power generation system. The system design can focus more on the prediction of wind direction and the precise control of steering without considering the complex steering logic exceeding 180 degrees. This not only reduces the complexity of the control system, but also improves the response speed and control accuracy, which has a positive effect on improving the overall performance of the system.

[0042] In summary, the rotation angle of the yaw bearing 24 is set to be greater than 0 degrees and not more than 180 degrees, which is sufficient to cope with most wind direction changes, while avoiding structural instability that may be caused by over-steering. It not only improves the wind direction tracking capability of the wind power generation system, but also avoids over-steering, enhances system stability, optimizes energy management, simplifies control strategies, and improves the coordinated efficiency of wind rotor components, significantly improving the stability and safety of the floating power generation platform. By limiting the rotation angle of the yaw bearing 24, not only the safe operation of the first wind rotor assembly 22 and the second wind rotor assembly 23 is ensured, but also the overall stability and wind resistance of the floating power generation platform are improved. This design is particularly suitable for coastal areas, where the wind direction is changeable and the sea breeze is strong and complex. Through free steering within a range of 180°, the floating power generation platform can flexibly adapt to changes in wind direction while maintaining the stability of the structure, avoiding the increased structural burden and energy consumption due to over-steering, thereby maintaining efficient power generation performance in a complex environment.

[0043] In some alternative embodiments, see Figure 3 The first wind rotor assembly 22 and the second wind rotor assembly 23 each include a nacelle 25, a wind rotor hub 26, a plurality of variable pitch bearings and a plurality of blades 28. The nacelle 25 is connected to the yaw bearing 24, and the wind rotor hub 26 is connected to one end of the nacelle 25; a plurality of variable pitch bearings are arranged at intervals around the circumference of the wind rotor hub 26; a plurality of blades 28 are connected to a plurality of variable pitch bearings in a one-to-one correspondence, and the variable pitch bearings drive the corresponding blades 28 to rotate. The nacelle 25 is the core part of the wind rotor assembly, carrying key equipment such as a generator, a frequency converter, and a cooling system. The connection between the nacelle 25 and the yaw bearing 24 enables the wind rotor assembly to automatically adjust its direction according to changes in wind direction, ensuring that the wind rotor can always face the wind direction, which greatly improves the efficiency of capturing wind energy.

[0044] In addition, the wind rotor hub 26 is located at the center of the blades 28 and is responsible for transmitting the rotational force of the blades 28 to the generator in the nacelle 25. The design of the wind rotor hub 26 is crucial to the stability and efficiency of the wind rotor. The direct connection between the wind rotor hub 26 and the nacelle 25 strengthens the overall structural stability of the wind rotor assembly, reduces vibration and deformation under the action of wind force, and improves the power generation efficiency. The direct connection design simplifies the installation and maintenance process of the wind rotor assembly and improves the operability and maintenance convenience of the high-altitude power generation platform. The optimized connection design ensures the efficient transmission of the rotational force of the blades 28 to the generator, reduces the loss of energy during the transmission process, and improves the energy conversion efficiency of the wind rotor assembly.

[0045] The variable pitch bearing is responsible for adjusting the angle of attack of the blade 28 to adapt to different wind speed conditions, ensuring that the first wind rotor assembly 22 and the second wind rotor assembly 23 can maintain the optimal power generation state under different wind speeds. The variable pitch bearing can intelligently adjust the angle of attack of the blade 28 according to the real-time monitored wind speed information, ensuring that the first wind rotor assembly 22 and the second wind rotor assembly 23 can maintain a high energy capture efficiency under different wind speed conditions. Under high wind speed conditions, by adjusting the angle of attack of the blade 28, the load of the first wind rotor assembly 22 and the second wind rotor assembly 23 can be reduced, overload can be avoided, and the safe operation of the system can be ensured. The precise control of the variable pitch bearing is conducive to the first wind rotor assembly 22 and the second wind rotor assembly 23 to operate in the best working condition under various wind conditions, maximizing the power generation efficiency and energy utilization efficiency. The design of the variable pitch bearing takes into account the efficiency optimization under different wind speed conditions. By adjusting the angle of attack of the blade 28, the floating power generation platform can maximize the use of wind energy, even in plateaus or desert areas with low wind speeds, it can maintain a high power generation. In addition, this design also improves the wind speed adaptability range of the floating power generation platform, allowing it to quickly adjust in environments with sudden changes in wind speed, such as hot winds in the desert or gusts on the plateau, to avoid overload or failure, ensuring the long-term stable operation of the floating power generation platform.

[0046] In summary, the design of the first wind rotor assembly 22 and the second wind rotor assembly 23 realizes the adaptive adjustment of the wind rotor assembly to the wind direction, maximizes the efficiency of wind energy capture, and enhances the overall stability of the system through the connection between the nacelle 25 and the yaw bearing 24, the structural optimization of the wind rotor hub 26, and the intelligent control of the variable pitch bearing and the blade 28. These technical effects work together to provide an efficient, stable and intelligent wind rotor assembly for the floating power generation platform, which is beneficial to the utilization rate of wind energy by the floating power generation platform and improves the stability of the floating power generation platform structure.

[0047] In some optional embodiments, the maximum rotation angle of the variable pitch bearing is greater than or equal to 180 degrees and less than or equal to 360 degrees. The variable pitch bearing has a wide range of rotation angles, allowing the blades 28 to be adjusted in a wide range of angles, so that the wind turbine assembly 20 can more flexibly cope with the unpredictable wind direction at high altitudes. For example, when the wind direction changes, the variable pitch bearing can quickly adjust the angle of the blades 28 to ensure that the first wind rotor assembly 22 and the second wind rotor assembly 23 are always facing the wind direction to maximize the capture of wind energy. The flexible rotation of the variable pitch bearing not only enhances the adaptability of the wind turbine assembly 20 to the wind direction, but also can adjust the stress state of the wind turbine assembly 20 by adjusting the angle of the blades 28, thereby improving the stability of the system. For example, when encountering strong winds or a sudden increase in wind speed, the variable pitch bearing can help the wind turbine assembly 20 reduce wind loads, avoid overloads, and ensure the stable operation of the system. Through the adjustment of the variable pitch bearing, the operating state of the wind turbine assembly 20 under extreme weather conditions can be effectively controlled to reduce equipment damage and safety risks. By adjusting the pitch bearing, the first wind rotor assembly 22 and the second wind rotor assembly 23 can be accurately adjusted to the optimal airflow utilization angle, reducing the airflow interference between the first wind rotor assembly 22 and the second wind rotor assembly 23, and improving the overall power generation efficiency. The wide rotation range of the pitch bearing enables the control system to more finely adjust the angle of the blade 28 to cope with slight changes in wind speed, ensuring that the wind energy conversion efficiency is in an ideal state.

[0048] The all-round adjustment capability of the variable pitch bearing ensures the safe operation of the floating power generation platform under extreme weather conditions. In extreme weather events such as typhoons or hurricanes, by quickly adjusting the angle of the blades 28, the wind load can be effectively reduced, the wind turbine unit 20 can be protected from damage, and the optimal power generation state can be quickly restored after the storm. This design not only enhances the wind resistance of the floating power generation platform, but also extends the service life of the floating power generation platform and reduces maintenance costs.

[0049] In addition, since the first wind rotor assembly 22 and the second wind rotor assembly 23 can quickly respond to wind direction changes through the variable pitch bearing, unnecessary loss of wind energy is reduced and power generation efficiency is improved. The large rotation angle of the variable pitch bearing also enables the wind turbine assembly 20 to maintain efficient operation within a wider wind speed range, especially in the case of sudden changes in wind speed, which can be adapted by adjusting the angle of the blades 28.

[0050] In some optional embodiments, the angle at which the variable pitch bearing drives the blade 28 to rotate is greater than or equal to 0 degrees and less than or equal to 270 degrees. The variable pitch bearing has a large range of rotation angles, so that the blade 28 can more flexibly adjust its windward angle, thereby maintaining a high wind energy conversion efficiency in the low to high wind speed range. For example, at low wind speeds, increasing the angle of the blade 28 can increase the effective windward area of ​​the blade 28 and improve wind energy capture; at high wind speeds, reducing the angle of the blade 28 can reduce wind loads and protect the wind rotor assembly from overload damage while maintaining a high power generation efficiency. By precisely controlling the rotation angle of the blade 28, the aerodynamic characteristics of the blade 28 can be optimized, wind resistance can be reduced, and wind energy conversion efficiency can be improved. Especially under complex high-altitude wind conditions, this strategy can help the blade 28 maintain the optimal angle of attack to ensure stable and efficient power generation.

[0051] The rotation angle design of the variable pitch bearing enables the wind rotor assembly to quickly respond to changes in wind direction. By adjusting the angle of the blades 28, the wind rotor assembly can maintain positive capture of wind flow, reduce the lateral load of the wind rotor assembly, and enhance the overall stability and safety of the system. In the case of strong winds or sudden wind increases, quickly adjusting the angle of the blades 28 to the minimum windward state can effectively reduce the mechanical stress on the wind rotor assembly, prevent overload damage, and ensure the long-term stable operation of the power generation system.

[0052] To sum up, in the present application, the variable pitch bearing drives the blade 28 to rotate at an angle greater than or equal to 0 degrees and less than or equal to 270 degrees, which not only improves the efficiency of wind energy capture and conversion, but also enhances the stability and safety of the system, while reducing mechanical wear and simplifying the maintenance process, thereby improving the energy conversion efficiency and economy of the high-altitude wind power generation platform in multiple dimensions.

[0053] In some alternative embodiments, see Figure 2 and Figure 3The support assembly 21 includes a support body 211, a first support frame 212 and a second support frame 213. A portion of the support body 211 is located in the floating air bag 10; one end of the first support frame 212 is connected to the support body 211, and the other end of the first support frame 212 is connected to the first wind wheel assembly 22; one end of the second support frame 213 is connected to the support body 211, and the other end of the second support frame 213 is connected to the second wind wheel assembly 23. The extension direction of the first support frame 212 intersects with the extension direction of the second support frame 213. A portion of the support body 211 is located in the floating air bag 10. This design ensures the stability and balance of the entire floating power generation platform structure. At the same time, the weight of the first wind wheel assembly 22 and the second wind wheel assembly 23 are evenly distributed on the floating air bag 10, reducing local overload and improving the carrying capacity of the floating air bag 10 and the stability of the entire system. The support body 211 is connected to the interior of the floating air bag 10, which helps to maintain the balance of the entire floating power generation platform under different wind conditions, reduce the fluctuation of the flight attitude, and ensure that the wind wheel assembly operates efficiently under stable conditions.

[0054] In addition, the extension direction of the first support frame 212 intersects with the extension direction of the second support frame 213, and supports different wind rotor assemblies, which is conducive to reducing the space occupied by the wind turbine unit 20 in the speed increase channel 11, while ensuring the wind rotor assembly's ability to capture wind and improving the space utilization rate of the floating power generation platform. The cross layout of the first support frame 212 and the second support frame 213 enables the first wind rotor assembly 22 and the second wind rotor assembly 23 to more flexibly adjust the angle in the V-shaped structure to adapt to wind flows in different directions and improve power generation efficiency. The cross design of the first support frame 212 and the second support frame 213 helps to reduce the airflow interference between the first wind rotor assembly 22 and the second wind rotor assembly 23, so that the first wind rotor assembly 22 and the second wind rotor assembly 23 can operate under more optimized airflow conditions and improve wind energy conversion efficiency. The movable connection design between the support frame and the wind wheel assembly enables the first wind wheel assembly 22 and the second wind wheel assembly 23 to automatically adjust their positions and angles according to changes in wind speed and wind direction, ensuring that the first wind wheel assembly 22 and the second wind wheel assembly 23 are always in the best power generation state, thereby improving the intelligence and response speed of the system.

[0055] In some optional embodiments, the angle between the first support frame 212 and the second support frame 213 is greater than or equal to 30 degrees and less than or equal to 60 degrees. Within the angle range formed between the first support frame 212 and the second support frame 213, it can be ensured that the first wind wheel assembly 22 and the second wind wheel assembly 23 maintain the best airflow distribution state. Being too close (angle less than 30 degrees) may cause the wind energy captured by the upstream wind wheel assembly (first wind wheel assembly) to be blocked by its blades, thereby affecting the wind energy capture of the downstream wind wheel assembly (second wind wheel assembly). If the angle is too large (more than 60 degrees), the airflow may be unevenly distributed between the first wind wheel assembly 22 and the second wind wheel assembly 23, reducing the utilization rate of wind energy. The angle design of 30 to 60 degrees enables the first wind wheel assembly 22 and the second wind wheel assembly 23 to minimize the airflow blocking and interference between each other when capturing wind energy, thereby improving the wind energy capture efficiency of the entire system.

[0056] In addition, the angle optimization design between the first support frame 212 and the second support frame 213 is not only conducive to the capture of wind energy and the stability of the floating power generation platform, but also can optimize the material usage and weight distribution of the entire structure. Within the angle range of 30 to 60 degrees, the first support frame 212 and the second support frame 213 can be distributed in a relatively compact manner, reducing material consumption while maintaining sufficient strength and rigidity to cope with wind and aerodynamic loads in high-altitude environments. This helps to reduce the weight of the floating power generation platform and reduce the energy required for it to be launched and maintain a stable state in the air, thereby improving the economy and energy efficiency of the system.

[0057] In some optional embodiments, the ratio of the distance between one end of the first support frame 212 away from the support body 211 and one end of the second support frame 213 away from the support body 211 to the length of the speed increasing channel 11 is greater than or equal to 0.5 and less than or equal to 0.9.

[0058] By controlling the ratio of the distance between the end of the first support frame 212 away from the support body 211 and the end of the second support frame 213 away from the support body 211 to the length of the speed-increasing channel 11 within a reasonable range, the wind turbine assembly 20 is ensured to be located in the high wind speed area within the speed-increasing channel 11, which is conducive to the full utilization of wind energy by the wind turbine assembly 20. In addition, by adjusting the distance between the first support frame 212 and the second support frame 213, as well as the length of the speed-increasing channel 11, the moment distribution of the floating power generation platform can be optimized to ensure that the floating power generation platform can maintain a good balance state and reduce shaking under different wind conditions. The appropriate ratio of the distance between the end of the first support frame 212 away from the support body 211 and the end of the second support frame 213 away from the support body 211 to the length of the speed-increasing channel 11 can also optimize the structural design of the floating power generation platform, improve the connection strength between the support assembly 21 and the floating air bag 10, and enhance the wind resistance and structural stability of the entire floating power generation platform in a high-altitude environment. A reasonable ratio can ensure the effective distance between the first wind wheel assembly 22 and the second wind wheel assembly 23, reduce airflow interference, and improve the overall power generation efficiency. Reasonable control of the ratio of the distance between the end of the first support frame 212 away from the support body 211 and the end of the second support frame 213 away from the support body 211 to the length of the speed-increasing channel 11 enables the first wind wheel assembly 22 and the second wind wheel assembly 23 to better capture the wind energy accelerated by the speed-increasing channel 11, thereby improving the wind energy capture capability of the first wind wheel assembly 22 and the second wind wheel assembly 23 while maintaining the stability of the first wind wheel assembly 22 and the second wind wheel assembly 23.

[0059] In some optional embodiments, the ratio of the maximum outer diameter of the first wind wheel assembly 22 to the minimum inner diameter of the speed-increasing channel 11 is greater than or equal to 0.93 and less than or equal to 0.97. The speed-increasing channel 11 is designed to increase the wind speed passing through it, thereby increasing the wind force received by the blades 28 and improving the power generation efficiency. When the ratio of the maximum outer diameter of the first wind wheel assembly 22 to the minimum inner diameter of the speed-increasing channel 11 is in the range of 0.93 to 0.97 (in this design, 0.93 to 0.97), the distance between the blades 28 and the inner wall of the speed-increasing channel 11 is extremely small, which helps to form an efficient airflow constraint environment, causing the wind speed to increase significantly in the speed-increasing channel 11. This design effect, combined with the aerodynamic characteristics of the blades 28, can maximize the conversion efficiency of wind energy to mechanical energy, thereby increasing the amount of electrical energy generated. In the speed-increasing channel 11, the close match between the size of the wind rotor assembly and the channel size can reduce the boundary layer effect when the airflow passes through, reduce the speed loss of the airflow near the inner wall surface of the speed-increasing channel 11, and ensure that the wind speed received by the blades 28 is close to the peak wind speed at the channel outlet. This reduces the unnecessary waste of wind energy and further improves the overall efficiency of the power generation system. The ratio of the maximum outer diameter of the first wind rotor assembly 22 to the minimum inner diameter of the speed-increasing channel 11 is controlled between 0.93 and 0.97, and the structural compatibility and stability between the wind rotor assembly and the speed-increasing channel 11 are also considered. This design ensures that the blades 28 will not interfere with the inner wall of the channel when running at high speed, avoiding mechanical damage and safety risks, while ensuring that the wind rotor assembly can remain stable in high-speed airflow, reducing vibration and other mechanical problems, and improving the reliability and service life of the system.

[0060] The precise matching of the wind rotor assembly and the speed-increasing channel 11 not only improves the wind energy capture rate, but also reduces the wind loss, allowing the floating power generation platform to generate electricity more efficiently in a high-altitude environment. This design is particularly suitable for areas with abundant wind resources but where wind resistance needs to be precisely controlled, such as high-altitude wind power generation. By optimizing the relative size of the wind rotor assembly and the speed-increasing channel, the platform can maximize the efficiency of wind energy utilization while maintaining structural stability, providing a new technical option for inland and offshore wind power projects, especially in areas where wind speed is unstable or has seasonal changes, which can significantly improve the economy and feasibility of wind power generation.

[0061] In some optional embodiments, the maximum outer diameter of the first wind wheel assembly 22 is the same as the maximum outer diameter of the second wind wheel assembly 23 .

[0062] In some optional embodiments, along the extension direction of the speed-increasing channel 11, the inner diameter of the speed-increasing channel 11 first decreases and then increases. The narrow part (i.e., the inner diameter reduction section) in the speed-increasing channel 11 will significantly increase the wind speed, because when the wind flow passes through the narrow area, in order to keep the flow constant, the wind speed must be accelerated. Subsequently, when the wind speed slows down in the expansion part of the channel (i.e., the inner diameter increase section), according to the principle of energy conservation, the energy of the wind speed gain part is converted into power on the blades 28, thereby improving the power generation efficiency of the wind turbine. The design of first reducing and then increasing the inner diameter allows the airflow to experience a smooth acceleration and deceleration process when passing through the speed-increasing channel 11, reduces the turbulent effect of the airflow, improves the smoothness of the airflow on the surface of the blades 28, and thus improves the efficiency of wind energy conversion. The expansion design of the speed-increasing channel 11 reduces the pressure difference before and after the blades 28, thereby reducing the resistance of the blades 28, allowing the wind wheel assembly to rotate more easily, reducing energy loss during operation, and further improving the power generation efficiency.

[0063] In addition, by controlling the change of wind speed in the speed-increasing channel 11, the wind load acting on the blades 28 can be effectively managed to avoid excessive load under strong wind conditions from damaging the wind rotor assembly and the support assembly 21. The speed-increasing channel 11 is designed to adapt to different wind directions and wind speed conditions, and by adjusting the airflow distribution inside the speed-increasing channel 11, the wind turbine assembly 20 can maintain a stable operating state under variable high-altitude wind conditions.

[0064] In some alternative embodiments, see Figure 1 The floating airbag 10 includes an airbag body 12, at least two airbag straight wings 13, and an auxiliary airbag 14. The airbag body 12 is cylindrical and has a speed-increasing channel 11. The cross-sectional area of ​​the outer peripheral surface of the airbag body 12 increases first and then decreases from the first end to the second end. At least two airbag straight wings 13 are arranged at intervals around the circumference of the airbag body 12. The auxiliary airbag 14 is arranged at the second end of the airbag body 12. The airbag body 12 is designed to be cylindrical, and the speed-increasing channel 11 is formed in the middle. The cross-sectional area of ​​the outer peripheral surface increases first and then decreases from the first end to the second end. This design utilizes the principle of aerodynamics and enhances the flow velocity of the passing airflow through the Venturi effect. When the wind flow passes through the speed-increasing channel 11 of the airbag body 12, due to the geometric shape of the speed-increasing channel 11 that first contracts and then expands, the wind flow will be accelerated in the contraction section, thereby significantly improving the wind speed when passing through the wind turbine unit 20 and increasing the efficiency of wind power generation. The increase in wind speed means that more wind energy can be captured by the wind turbine assembly 20, especially under low wind speed conditions. This design can significantly improve the power generation efficiency and expand the operating adaptability of the floating power generation platform. The outer peripheral surface of the airbag body 12 is provided with an airfoil that increases first and then decreases, which helps to offset the axial thrust and ensure the stability of the floating power generation platform.

[0065] The provision of the airbag straight wing 13 helps to balance the lateral force of the airbag body 12, reduce the swaying under the action of wind, and improve the stability of the floating power generation platform flying in the sky. The airfoil design of the airbag straight wing 13 can optimize the way the airflow bypasses the airbag body 12, reduce wind resistance, and increase the lift of the floating airbag 10, so that the floating power generation platform can maintain its position in the air more efficiently. The auxiliary airbag 14 is used to assist in controlling the lift of the airbag body 12, which helps the floating airbag 10 to float stably in a high-altitude environment, especially when the wind speed is weak or the load is heavy. The role of the auxiliary airbag 14 is particularly obvious. The provision of the auxiliary airbag 14 at the second end of the airbag body 12 helps to balance the weight distribution of the entire floating power generation platform, reduce flight instability caused by the shift of the center of gravity, and ensure that the floating power generation platform can maintain a good flight attitude under various wind conditions.

[0066] In some optional embodiments, the airbag body 12 further comprises a plurality of sub-airbags with different functions, which are used to adjust the buoyancy of the floating airbag 10 in the air to ensure the flight stability of the floating airbag 10 .

[0067] exist Figure 1 In the specific embodiment shown, the auxiliary airbag 14 includes an annular frame 141 and a plurality of connecting ribs 142, wherein the plurality of connecting ribs 142 are connected to one end of the annular frame 141, and the plurality of connecting ribs 142 are arranged at circumferential intervals around the annular frame 141, and the two ends of the connecting ribs 142 are respectively connected to the annular frame 141 and the airbag body 12.

[0068] In some optional embodiments, the floating power generation platform further includes a cable electrically connected to the generator in the nacelle 25 so as to guide the computer formed by the floating power generation platform into the underground equipment.

[0069] In some optional embodiments, the wind turbine unit 20 may also be provided with a variety of sensors and control systems to achieve adaptive adjustment, which is not specifically limited here and can be designed according to actual needs.

[0070] In some optional embodiments, the material of the support component 21 may be a composite material, such as carbon fiber.

[0071] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A floating power generation platform, characterized in that: include: A floating air bag (10), wherein the floating air bag (10) has a speed-increasing channel (11); A wind turbine assembly (20), wherein the wind turbine assembly (20) is arranged in the speed-increasing channel (11), and the wind turbine assembly (20) comprises a support assembly (21), a first wind wheel assembly (22) and a second wind wheel assembly (23), wherein the first wind wheel assembly (22) and the second wind wheel assembly (23) are both movably connected to the support assembly (21), a part of the support assembly (21) is connected to the floating air bag (10), and the first wind wheel assembly (22) and the second wind wheel assembly (23) are arranged at intervals along the extension direction of the speed-increasing channel (11).

2. The floating power generation platform according to claim 1, characterized in that: The wind turbine assembly (20) further comprises at least two yaw bearings (24), at least one of the yaw bearings (24) being arranged at the connection between the first wind rotor assembly (22) and the support assembly (21), and at least another yaw bearing (24) being arranged at the connection between the second wind rotor assembly (23) and the support assembly (21).

3. The floating power generation platform according to claim 2, characterized in that: The rotation angle of the yaw bearing (24) is greater than 0 degrees and less than or equal to 180 degrees.

4. The floating power generation platform according to claim 2, characterized in that: The first wind wheel assembly (22) and the second wind wheel assembly (23) both include: a nacelle (25), wherein the nacelle (25) is connected to the yaw bearing (24), A wind rotor hub (26), wherein the wind rotor hub (26) is connected to one end of the nacelle (25); A plurality of variable pitch bearings, wherein the plurality of variable pitch bearings are arranged at intervals around the circumference of the wind rotor hub (26); A plurality of blades (28) are connected to the plurality of variable pitch bearings in a one-to-one correspondence, and the variable pitch bearings drive the corresponding blades (28) to rotate.

5. The floating power generation platform according to claim 4, characterized in that: The maximum rotation angle of the pitch bearing is greater than or equal to 180 degrees and less than or equal to 360 degrees.

6. The floating power generation platform according to claim 4, characterized in that: The variable pitch bearing drives the blade (28) to rotate at an angle greater than or equal to 0 degrees and less than or equal to 270 degrees.

7. The floating power generation platform according to any one of claims 1 to 6, characterized in that: The support assembly (21) comprises: A supporting body (211), a portion of which is located inside the floating air bag (10); a first support frame (212), wherein one end of the first support frame (212) is connected to the support body (211), and the other end of the first support frame (212) is connected to the first wind wheel assembly (22); A second support frame (213), one end of the second support frame (213) is connected to the support body (211), the other end of the second support frame (213) is connected to the second wind wheel assembly (23), and the extension direction of the first support frame (212) intersects with the extension direction of the second support frame (213).

8. The floating power generation platform according to claim 7, characterized in that: The angle between the first support frame (212) and the second support frame (213) is greater than or equal to 30 degrees and less than or equal to 60 degrees.

9. The floating power generation platform according to claim 7, characterized in that: The ratio of the distance between one end of the first support frame (212) away from the support body (211) and one end of the second support frame (213) away from the support body (211) to the length of the speed increasing channel (11) is greater than or equal to 0.5 and less than or equal to 0.

9.

10. The floating power generation platform according to any one of claims 1 to 6, characterized in that: The ratio of the maximum outer diameter of the first wind wheel assembly (22) to the minimum inner diameter of the speed increasing channel (11) is greater than or equal to 0.93 and less than or equal to 0.97; and / or Along the extension direction of the speed-increasing channel (11), the inner diameter of the speed-increasing channel (11) first decreases and then increases.

11. The floating power generation platform according to any one of claims 1 to 6, characterized in that: The floating air bag (10) comprises: An airbag body (12), the airbag body (12) is cylindrical, the airbag body (12) has the speed-increasing channel (11), and the cross-sectional area enclosed by the outer peripheral surface of the airbag body (12) increases first and then decreases from the first end to the second end; At least two airbag straight wings (13), the at least two airbag straight wings (13) are arranged at intervals around the circumference of the airbag body (12); An auxiliary airbag (14) is arranged at the second end of the airbag body (12).

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