A new energy wind turbine with high-efficiency wind energy capture enhancement device
By using bevel gears and a regulating motor, the blade angle can be adjusted, which solves the problem of low efficiency of wind turbines under varying wind speeds and achieves efficient wind energy capture and safety protection at different wind speeds.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 苏州大鑫新能源科技有限公司
- Filing Date
- 2026-04-28
- Publication Date
- 2026-06-05
AI Technical Summary
The blades and hubs of existing wind turbines are fixedly connected and cannot be adjusted, resulting in low wind energy capture efficiency under variable wind speed conditions and the inability to reliably limit power and provide safety protection at excessive wind speeds.
By using a combination of bevel gears and a regulating motor, a single motor can synchronously drive three blades to adjust the pitch angle. Through sensors and controllers, wind speed and wind force are monitored in real time, and the blades are controlled to optimize the pitch angle under different wind speeds to improve wind energy capture efficiency, and feathering protection is provided in case of excessive wind speed.
The propeller pitch angle is actively increased below the rated wind speed to improve wind energy capture efficiency, and power limiting protection is achieved through reverse adjustment when the wind speed exceeds the rated wind speed, thereby improving wind energy utilization and ensuring safety.
Smart Images
Figure CN122148494A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind power generation, specifically to a new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device. Background Technology
[0002] Wind power generation, as a clean and renewable energy utilization method, has been widely used around the world. In wind turbine generator sets, the rotor captures wind energy and converts it into mechanical energy, which drives the generator to generate electricity through the transmission chain.
[0003] In existing wind turbines, the blades and hub are fixedly connected, and the blade angle cannot be adjusted. This means that the wind energy capture efficiency cannot be optimized by actively adjusting the pitch angle under varying wind speeds, and reliable power limiting and safety protection cannot be achieved by feathering the blades at high wind speeds. Summary of the Invention
[0004] The purpose of this invention is to provide a new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A new energy wind turbine with a high-efficiency wind energy capture and enhancement device, including
[0007] The tower body has a rotatable housing at its top, and a steering component is provided between the housing and the tower body.
[0008] A rotating hub is rotatably mounted on one side of the chassis, and an adjustment mechanism is provided in the rotating hub;
[0009] The data acquisition box is fixedly connected to the top of the chassis and is used in conjunction with the adjustment mechanism.
[0010] Furthermore, a generator body is fixedly connected inside the chassis on the side away from the rotating hub. A speed increaser is detachably connected to the middle of the inner side of the chassis by bolts. The high-speed shaft of the speed increaser is connected to the output shaft of the generator body through a coupling. A main shaft is provided at the end of the chassis near the rotating hub, and one end of the main shaft is fixedly connected to the rotating hub.
[0011] Furthermore, two bearing seats are fixedly connected side by side inside the housing and near the rotating hub. The end of the main shaft away from the rotating hub is rotatably connected to the bearing seat on the same side through a bearing. The low-speed shaft of the speed increaser is rotatably connected to the bearing seat on the same side through a bearing. The main shaft and the low-speed shaft of the speed increaser are connected by a coupling.
[0012] Furthermore, the steering component includes a second rotating shaft fixedly connected to the middle of the bottom of the chassis, a gear ring fixedly connected to the top of the tower body, and a reducer fixedly connected to one side of the bottom wall inside the chassis. The second rotating shaft is rotatably connected to the top of the tower body through a bearing. A steering motor is fixedly connected to the top of the reducer. The output shaft of the steering motor is fixedly connected to the high-speed shaft of the reducer. A drive gear that meshes with the gear ring is fixedly connected to the low-speed shaft of the reducer.
[0013] Furthermore, a sensor component is installed on one side of the inside of the data collection box, and a controller is fixedly connected to the other side. The sensor component includes a wind speed sensor and a wind force sensor. The wind force sensor, the wind speed sensor, and the steering motor are all electrically connected to the controller.
[0014] Furthermore, the adjustment mechanism includes three blades evenly distributed around the outside of the rotating hub in the circumferential direction, and a bevel gear one rotatably connected to the middle of the inner side of the rotating hub via bearings. Three bevel gears two are evenly meshed around the side of the bevel gear one away from the chassis in the circumferential direction. Each bevel gear two is coaxially fixed to the blades via a connecting shaft. A cross mounting bracket is fixedly connected to the inner ring of the bevel gear one, and a rotating shaft one is fixedly connected to the middle of the cross mounting bracket. Both ends of the rotating shaft one are rotatably connected to the side wall of the rotating hub via bearings.
[0015] Furthermore, the adjustment mechanism also includes an adjustment motor fixedly connected to one side of the rotating hub, a spur gear two fixedly connected to the outer periphery of the rotating shaft one, and a spur gear one meshing with one side of the spur gear two. The other end of the spur gear one is coaxially fixedly connected to a worm gear. The output shaft of the adjustment motor is fixedly connected to a worm gear meshing with the worm gear. The adjustment motor is electrically connected to the controller.
[0016] Furthermore, a conical fairing is fixedly connected to the side of the rotating hub away from the chassis.
[0017] Compared with the prior art, the beneficial effects of the present invention are:
[0018] This invention achieves the function of synchronously driving three blades to adjust the pitch angle by using bevel gear one, bevel gear two and adjusting motor in combination. It solves the problem of low wind energy capture efficiency under variable wind speed conditions caused by the non-adjustable blade angle in the prior art. It enables the wind turbine to actively increase the pitch angle below the rated wind speed to improve the wind energy capture efficiency, and achieves feathering power limiting and safety protection by reverse adjustment when the wind speed exceeds the limit. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall main structure of the present invention;
[0020] Figure 2 This is a schematic cross-sectional view of the chassis structure of the present invention;
[0021] Figure 3 This is a front view schematic diagram of the bevel gear structure of the present invention;
[0022] Figure 4 This is a schematic diagram of the bevel gear structure from one side of the present invention;
[0023] Figure 5 For the present invention Figure 2 An enlarged diagram of point A in the diagram.
[0024] In the diagram: 1. Tower body; 2. Chassis; 3. Rotating hub; 4. Data acquisition box; 5. Generator body; 6. Speed increaser; 7. Main shaft; 8. Shaft seat; 9. Coupling II; 10. Rotating shaft II; 11. Gear ring; 12. Reducer; 13. Steering motor; 14. Drive gear; 15. Controller; 16. Wind speed sensor; 17. Wind power sensor; 18. Blade; 19. Bevel gear I; 20. Bevel gear II; 21. Connecting shaft; 22. Cross mounting bracket; 23. Rotating shaft I; 24. Adjusting motor; 25. Spur gear II; 26. Worm gear; 27. Worm; 28. Fairing; 29. Coupling I; 30. Spur gear I. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] like Figure 1-5 As shown, the present invention provides a technical solution:
[0027] A new energy wind turbine with a high-efficiency wind energy capture and enhancement device includes a tower 1, with a rotatable housing 2 mounted on its top. A generator body 5 is fixedly connected inside the housing 2 on the side away from the rotating hub 3. A conical fairing 28 is fixedly connected to the side of the rotating hub 3 away from the housing 2. A speed increaser 6 is detachably connected to the inner center of the housing 2 via bolts. The high-speed shaft of the speed increaser 6 is connected to the output shaft of the generator body 5 via a coupling 29. A main shaft 7 is located at the end of the housing 2 near the rotating hub 3, with one end fixedly connected to the rotating hub 3. Two bearing seats 8 are fixedly connected side-by-side inside the housing 2 near the rotating hub 3. The end of the main shaft 7 away from the rotating hub 3 is connected to... The same-side bearing 8 is rotatably connected, and the low-speed shaft of the speed increaser 6 is rotatably connected to the same-side bearing 8 via bearings. The main shaft 7 is connected to the low-speed shaft of the speed increaser 6 via coupling 9. A steering component is provided between the housing 2 and the tower body 1. The steering component includes a rotating shaft 10 fixedly connected to the middle of the bottom end of the housing 2, a gear ring 11 fixedly connected to the top of the tower body 1, and a reducer 12 fixedly connected to one side of the inner bottom wall of the housing 2. The rotating shaft 10 is rotatably connected to the top of the tower body 1 via bearings. A steering motor 13 is fixedly connected to the top of the reducer 12. The output shaft of the steering motor 13 is fixedly connected to the high-speed shaft of the reducer 12. A drive gear 14 that meshes with the gear ring 11 is fixedly connected to the low-speed shaft of the reducer 12. A rotating hub 3 is rotatably mounted on one side of the chassis 2. An adjustment mechanism is provided within the rotating hub 3. The adjustment mechanism includes three blades 18 evenly distributed circumferentially on the outside of the rotating hub 3, and a bevel gear 19 rotatably connected to the center of the inner side of the rotating hub 3 via bearings. Three bevel gears 20 are evenly meshed circumferentially on the side of the bevel gear 19 away from the chassis 2. Each bevel gear 20 is coaxially fixed to the blades 18 via a connecting shaft 21. A cross-shaped mounting bracket 22 is fixedly connected to the inner ring of the bevel gear 19. A rotating shaft 23 is fixedly connected to the center of the cross-shaped mounting bracket 22. Both ends of the rotating shaft 23 are rotatably connected to the side wall of the rotating hub 3 via bearings. The adjustment mechanism also includes a... The adjustment motor 24 is fixedly connected to the outer periphery of the rotating shaft 23, and the spur gear 25 meshes with the spur gear 25 on one side. The other end of the spur gear 25 is coaxially fixedly connected to the worm gear 26. The output shaft of the adjustment motor 24 is fixedly connected to the worm 27 meshing with the worm gear 26. The adjustment motor 24 is electrically connected to the controller 15. The data acquisition box 4 is fixedly connected to the top of the housing 2 and works in conjunction with the adjustment mechanism. A sensor component is provided on one side of the inside of the data acquisition box 4, and the controller 15 is fixedly connected to the other side. The sensor component includes a wind speed sensor 16 and a wind force sensor 17. The wind force sensor 17, the wind speed sensor 16, and the steering motor 13 are all electrically connected to the controller 15.
[0028] Preferably, the speed increaser 6 uses a planetary speed increaser.
[0029] Preferably, the reducer 12 is a worm gear reducer.
[0030] In this embodiment, the combined use of bevel gear 19, bevel gear 20 and regulating motor 24 enables a single motor to synchronously drive three blades 18 to adjust the pitch angle, solving the problem of low wind energy capture efficiency under variable wind speed conditions caused by the non-adjustable blade angle in the prior art. This allows the wind turbine to actively increase the pitch angle below the rated wind speed to improve wind energy capture efficiency, and to achieve feathering power limiting and safety protection through reverse adjustment when the wind speed exceeds the limit.
[0031] All electrical components mentioned in this solution are existing technologies, and each model is only one of them. Any electrical component that meets the requirements of this solution can be used. Those skilled in the art should connect all electrical components and their compatible power supplies via wires. A suitable controller should be selected based on the actual situation to meet control requirements. The specific connections and control sequence should refer to the working principle described below, where the electrical connections are completed according to the sequential operation of each electrical component. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, without further explanation of the electrical control.
[0032] Working Principle: During operation, external airflow passes through wind speed sensor 16 and wind force sensor 17. Wind force sensor 17 and wind speed sensor 16 transmit real-time wind speed and wind force data to controller 15. When the wind direction changes, controller 15 starts steering motor 13 according to a preset program. Steering motor 13 drives the high-speed shaft of reducer 12 to rotate. After reduction and torque increase by reducer 12, it drives drive gear 14 on low-speed shaft to rotate. Drive gear 14 meshes with gear ring 11 fixedly connected to the top of tower body 1, thereby driving the casing 2 and rotating hub 3 to rotate around rotating shaft 20 relative to tower body 1, ensuring the impeller always faces the wind direction. When the wind speed is lower than the rated wind speed, controller 15 starts regulating motor 24 according to the wind speed signal. The output shaft of regulating motor 24 drives worm gear 27 to rotate. Worm gear 27 drives worm wheel 26 to rotate. Worm wheel 26 drives coaxially fixed spur gear 30 to rotate. Spur gear 30 drives meshing spur gear 25 to rotate. The controller 15 drives the rotating shaft 23 and the cross mounting bracket 22 to rotate. The cross mounting bracket 22 drives the bevel gear 19 to rotate. The bevel gear 19 simultaneously drives the three bevel gears 20 to rotate. The bevel gears 20 drive the blades 18 to rotate around their own axes through the connecting shaft 21, thereby adjusting the pitch angle of the blades 18 to maximize wind energy capture. When the wind speed exceeds the rated wind speed, the controller 15 drives the regulating motor 24 in the reverse direction, and adjusts the pitch angle of the blades 18 in the reverse direction through the above transmission chain to limit wind energy capture and maintain the stable output power of the generator body 5. During the wind energy transmission process, the wind energy captured by the rotating hub 3 is transmitted through the main shaft 7. The main shaft 7 transmits the torque to the low-speed shaft of the speed increaser 6 through the coupling 29. After being accelerated by the speed increaser 6, its high-speed shaft transmits the high speed and low torque to the output shaft of the generator body 5 through the coupling 29, driving the generator body 5 to generate electricity. At the same time, the conical fairing 28 rotates with the rotating hub 3, guiding the airflow to smoothly transition to the root of the blades 18 and reducing eddy current losses.
[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device, characterized in that: include The tower body (1) has a rotatable housing (2) at its top, and a steering component is provided between the housing (2) and the tower body (1); A rotating hub (3) is rotatably disposed on one side of the housing (2), and an adjustment mechanism is provided in the rotating hub (3); The acquisition box (4) is fixedly connected to the top of the chassis (2) and is used in conjunction with the adjustment mechanism.
2. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 1, characterized in that: A generator body (5) is fixedly connected inside the housing (2) and on the side away from the rotating hub (3). A speed increaser (6) is detachably connected to the middle of the inner side of the housing (2) by bolts. The high-speed shaft of the speed increaser (6) is connected to the output shaft of the generator body (5) through a coupling (29). A main shaft (7) is provided at one end of the housing (2) near the rotating hub (3). One end of the main shaft (7) is fixedly connected to the rotating hub (3).
3. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 2, characterized in that: Inside the housing (2) and near the end of the rotating hub (3), two bearing seats (8) are fixedly connected side by side. The end of the main shaft (7) away from the rotating hub (3) is rotatably connected to the bearing seat (8) on the same side through a bearing. The low-speed shaft of the speed increaser (6) is rotatably connected to the bearing seat (8) on the same side through a bearing. The main shaft (7) and the low-speed shaft of the speed increaser (6) are connected by a coupling (9).
4. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 1, characterized in that: The steering component includes a rotating shaft 2 (10) fixedly connected to the middle of the bottom of the chassis (2), a gear ring (11) fixedly connected to the top of the tower body (1), and a reducer (12) fixedly connected to one side of the bottom wall of the chassis (2). The rotating shaft 2 (10) is rotatably connected to the top of the tower body (1) through a bearing. The top of the reducer (12) is fixedly connected to a steering motor (13). The output shaft of the steering motor (13) is fixedly connected to the high-speed shaft of the reducer (12). The low-speed shaft of the reducer (12) is fixedly connected to a drive gear (14) that meshes with the gear ring (11).
5. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 4, characterized in that: The sensor component is provided on one side of the inside of the acquisition box (4), and the controller (15) is fixedly connected to the other side. The sensor component includes a wind speed sensor (16) and a wind force sensor (17). The wind force sensor (17), the wind speed sensor (16), and the steering motor (13) are all electrically connected to the controller (15).
6. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 1, characterized in that: The adjustment mechanism includes three blades (18) evenly distributed around the outside of the rotating hub (3) and a bevel gear (19) rotatably connected to the middle of the inner side of the rotating hub (3) via bearings. Three bevel gears (20) are evenly meshed around the side of the bevel gear (19) away from the housing (2). Each bevel gear (20) is coaxially fixed with the blade (18) via a connecting shaft (21). A cross mounting bracket (22) is fixedly connected to the inner ring of the bevel gear (19). A rotating shaft (23) is fixedly connected to the middle of the cross mounting bracket (22). Both ends of the rotating shaft (23) are rotatably connected to the side wall of the rotating hub (3) via bearings.
7. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 6, characterized in that: The adjustment mechanism also includes an adjustment motor (24) fixedly connected to one side of the rotating hub (3), a spur gear two (25) fixedly connected to the outer periphery of the rotating shaft one (23), and a spur gear one (30) meshing with one side of the spur gear two (25). The other end of the spur gear one (30) is coaxially fixedly connected to a worm gear (26). The output shaft of the adjustment motor (24) is fixedly connected to a worm (27) meshing with the worm gear (26). The adjustment motor (24) is electrically connected to the controller (15).
8. A new energy wind turbine generator with a high-efficiency wind energy capture and enhancement device according to claim 1, characterized in that: A conical fairing (28) is fixedly connected to the side of the rotating hub (3) away from the chassis (2).