Vertical axis wind power generation device capable of self-adapting to wind direction

Abstract

The invention belongs to the technical field of power generation equipment, and particularly relates to a wind direction self-adaptive vertical axis wind power generation device which comprises a base and an impeller mechanism, and an empennage mounting bracket is arranged on the base and movably connected with the base; the impeller mechanism is arranged on the empennage mounting bracket; an empennage is arranged on the empennage mounting bracket; and the empennage is used for adjusting the rotation angle of the empennage mounting bracket in real time according to the wind direction. According to the vertical axis wind power generation device, the rotatable empennage mounting bracket is arranged, and the empennage is arranged on the empennage mounting bracket, so that the rotating angle of the empennage mounting bracket can be automatically adjusted under the action of wind power, and when the empennage mounting bracket is adjusted, the impeller mechanism can be adjusted along with the empennage mounting bracket; therefore, wind facing operation of the blades in the impeller mechanism can be completed, and the energy utilization rate of the whole power generation device is improved.

Description

Technical Field

[0001] This invention relates to the field of power generation equipment technology, and more specifically to a vertical axis wind power generation device that can adapt to wind direction. Background Technology

[0002] Wind turbine generators can be divided into horizontal axis generators and vertical axis wind turbine generators. Horizontal axis wind turbine generators generally have a higher efficiency in converting wind energy than vertical axis wind turbine generators. Therefore, most large-scale wind farms currently use traditional horizontal axis generators. Horizontal axis wind turbines are typically installed high in the air via towers, placing extremely high demands on the quality of components such as the tower, nacelle, rotor shaft, and blades. They also require significant space and ground area, resulting in high construction costs. Furthermore, installation and maintenance of horizontal axis wind turbines are inconvenient; workers must climb to the nacelle at the top of the tower to inspect and repair components, posing safety hazards. Additionally, horizontal axis turbines are greatly affected by wind direction. If the blades at the front of the turbine are not aligned with the wind, they cannot rotate and generate electricity. Therefore, horizontal axis wind turbines require specialized yaw control devices to regulate blade orientation. These devices, including motors, gears, sensors, and controllers, are complex in both structure and control method, further increasing the overall manufacturing and operating costs of the horizontal axis wind turbine.

[0003] Vertical axis wind turbines have a simpler structural design, allowing the generator and gearbox to be installed on the ground, making them easier to maintain and repair, and resulting in relatively lower construction costs. They also do not require wind direction adaptation during operation, meaning they can generate electricity from any direction of the horizontal wind. However, they are generally limited by the force couple balance on both sides of the vertical axis, resulting in poor wind resistance and high blade drag during rotation, leading to relatively low overall energy conversion efficiency. Furthermore, vertical axis wind turbines generally cannot actively adapt to wind direction, making speed control difficult when the blades are too fast, and maintaining stable power output is challenging. Therefore, this application aims to provide a vertical axis wind power generation device that can adapt to wind direction. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a vertical axis wind power generation device that can adapt to wind direction.

[0005] The technical solution of this invention is: a vertical axis wind power generation device that can adapt to wind direction, including a base and an impeller mechanism. A tail fin mounting bracket is provided on the base, and the tail fin mounting bracket is movably connected to the base. The impeller mechanism is provided on the tail fin mounting bracket. The impeller mechanism includes a central shaft, blades, and an eccentric disk. Both ends of the central shaft are movably connected to the tail fin mounting bracket. The blades include a blade shaft and a blade body. The blade shaft is connected to the central shaft through a fixing member. The eccentric disk is mounted on the central shaft. The blade shaft cooperates with the eccentric disk through an adjusting rod. When the blades rotate around the central shaft, the interaction between the blade shaft and the eccentric disk causes the blades to periodically change their unfolding angle; that is, the blades gradually unfold on one side of the central shaft and gradually close on the corresponding other side. A tail fin is provided on the tail fin mounting bracket, and the tail fin is used to adjust the rotation angle of the tail fin mounting bracket in real time according to the wind direction.

[0006] Furthermore, the tail fin mounting bracket is U-shaped, including a vertical rod and crossbars located at both ends of the vertical rod. The impeller mechanism is located on the inner side of the tail fin mounting bracket, that is, between the two crossbars, and the tail fin is located on the outer side of the vertical rod, that is, on the side away from the crossbars.

[0007] Furthermore, the tail fin is flat, and its lateral area is much larger than that of any single blade, resulting in the tail fin receiving greater thrust from the wind than the blades in the impeller mechanism. This allows the tail fin to easily rotate its mounting bracket when the wind direction changes, ultimately maintaining parallel alignment with the wind.

[0008] Furthermore, the eccentric disk is provided with mounting holes and annular grooves, wherein the mounting holes are not located at the center of the annular grooves; when the eccentric disk is movably connected to the central shaft through the mounting holes, the central shaft and the annular grooves form an eccentric structure.

[0009] Furthermore, the blade shaft is engaged with the annular groove via an adjusting rod. One end of the adjusting rod is fixedly connected to the blade shaft, while the other end of the adjusting rod is restricted from moving along the annular groove.

[0010] Furthermore, the eccentric disk and the tail fin mounting bracket can be fixedly connected. However, the installation position of the eccentric disk must be designed. For example, after the eccentric disk is installed in the designed position, it should be ensured that during the rotation of the impeller mechanism, when a certain blade is unfolded to its maximum angle, that blade remains perpendicular to the tail fin. This allows the blade to receive wind force to the maximum extent. During operation, the tail fin will rotate first to an angle that is basically parallel to the wind direction. At this time, the blade unfolded to its maximum angle is perpendicular to the tail fin, that is, perpendicular to the wind direction. At this time, the windward area of ​​the blade is the largest, and the energy of the wind received is also the largest.

[0011] Furthermore, the eccentric disk is also movably connected to the tail wing mounting bracket via an adjustment mechanism, which can be used to adjust the relative position between the eccentric disk and the tail wing mounting bracket.

[0012] Furthermore, the adjustment mechanism includes a first link and a second link. One end of the first link is hinged to the middle of the second link, and the other end of the first link is hinged to the central shaft. One end of the second link is connected to the eccentric disk, and the other end of the second link is connected to the tail wing mounting bracket via a telescopic rod.

[0013] Furthermore, the center of the fixing component is fixedly connected to the central shaft, so that the fixing component moves synchronously with the central shaft. The fixing component is provided with mounting holes around its perimeter that mate with the blade shaft, and the blade shaft is rotatably connected to the fixing component through the mounting holes.

[0014] Furthermore, a rotating disk is installed above the base, and the tail fin mounting bracket is mounted on the rotating disk. The rotating disk assists in the free rotation of the tail fin mounting bracket, and the lower end of the central shaft passes through the rotating disk and is connected to the generator under the base. The rotating disk can rotate flexibly around the central shaft.

[0015] Furthermore, there are multiple impeller mechanisms, for example, two, arranged side by side. The blades of the two impeller mechanisms rotate in opposite directions, and all blades expand at an angle as they rotate away from the other impeller mechanism. The central axes of both impeller mechanisms are connected to the two input ends of a speed increaser located below. The input ends of the speed increaser pass through the rotating disk below and are connected to the generator.

[0016] Furthermore, the blades on the central axis are divided into multiple groups, each group of blades has a different installation height, and each group of blades corresponds to a tail fin mounting bracket and a tail fin. The deployment angles of different groups of blades are staggered.

[0017] The advantages of this invention compared to the prior art are as follows: 1. The vertical axis wind power generation device of the present invention is equipped with a rotatable tail fin mounting bracket and a tail fin is provided on the tail fin mounting bracket, so that the tail fin mounting bracket can automatically adjust the rotation angle under the action of wind force. When the tail fin mounting bracket is adjusted, the impeller mechanism will also be adjusted accordingly, thereby completing the wind-facing operation of the blades in the impeller mechanism, that is, allowing the blades to always receive wind force at the designed unfolding angle. 2. The present invention can also adjust the overall unfolding angle of the blades in the impeller mechanism through an adjustment mechanism. That is, by adjusting the relative position between the eccentric disk and the tail fin mounting bracket or the central shaft, the opening angle of the blades can be changed. In this way, when the wind force is too strong, the blade angle can be reduced by adjusting the eccentric disk to reduce the wind-receiving area; to prevent the central shaft from rotating too fast and to ensure that the impeller mechanism works more smoothly. 3. The blades on the central shaft of the impeller mechanism of the present invention can be divided into multiple groups, each group of blades corresponds to a tail fin, and the unfolding angle of each group of blades is staggered, so as to better receive wind force and make the central shaft rotate more smoothly, which is especially suitable for scenarios with different wind directions at different heights. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of Embodiment 1 of the present invention; Figure 2 This is another three-dimensional view after adjustment in Embodiment 1 of the present invention; Figure 3 This is a side view of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the impeller mechanism in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of Embodiment 3 of the present invention; In the diagram: 1-base, 2-tail fin mounting bracket, 3-impeller mechanism, 31-central shaft, 32-blade shaft, 33-blade body, 34-fixed component, 35-eccentric disk, 351-ring groove, 36-adjusting rod, 4-adjusting mechanism, 41-first connecting rod, 42-second connecting rod, 43-telescopic rod, 5-tail fin, 6-motor, 7-rotating disk, 8-speed increaser, 9-wind deflector column, 10-mounting column. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art.

[0020] Example 1 like Figure 1-4As shown, this embodiment is a vertical axis wind power generation device that can adapt to wind direction, including a base 1 and an impeller mechanism 3. A tail fin mounting bracket 2 is provided on the base 1 and is movably connected to the base 1. The impeller mechanism 3 is provided on the tail fin mounting bracket 2. The impeller mechanism 3 includes a central shaft 31, blades, and an eccentric disk 35. Both ends of the central shaft 31 are movably connected to the tail fin mounting bracket 2. The blades include a blade shaft 32 and a blade body 33. The blade shaft 32 is connected to the central shaft 31 through a fixing member 34. The eccentric disk 35 is installed on the central shaft 31. The blade shaft 32 cooperates with the eccentric disk 35 through an adjusting rod 36. When the blades rotate around the central shaft 31, the interaction between the blade shaft 32 and the eccentric disk 35 causes the blades to periodically change their unfolding angle; that is, the blades gradually unfold on one side of the central shaft 31 and gradually close on the corresponding other side. A tail fin 5 is provided on the tail fin mounting bracket 2, and the tail fin 5 is used to adjust the rotation angle of the tail fin mounting bracket 2 in real time according to the wind direction.

[0021] In this embodiment, the tail fin mounting bracket 2 is U-shaped, including a vertical rod and crossbars located at both ends of the vertical rod. The impeller mechanism 3 is located inside the tail fin mounting bracket 2, that is, between the two crossbars. The tail fin 5 is located outside the vertical rod, that is, on the side away from the crossbars. The tail fin 5 is flat, and the lateral area of ​​the tail fin 5 is larger than the lateral area of ​​any single blade, so that the thrust of the wind received by the tail fin 5 is greater than the force received by the relevant blades in the impeller mechanism 3.

[0022] In this embodiment, the eccentric disk 35 is provided with a mounting hole and an annular groove, and the mounting hole is not located at the center of the annular groove; the eccentric disk 35 is rotatably connected to the central shaft 31 through the mounting hole. The blade shaft 32 cooperates with the annular groove through an adjusting rod 36, one end of the adjusting rod 36 is fixedly connected to the blade shaft 32, and the other end of the adjusting rod 36 is restricted to moving only along the annular groove.

[0023] In this embodiment, the eccentric disk 35 is also movably connected to the tail fin mounting bracket 2 via an adjustment mechanism 4. The adjustment mechanism 4 is used to adjust the relative position between the eccentric disk 35 and the tail fin mounting bracket 2. The adjustment mechanism 4 includes a first connecting rod 41 and a second connecting rod 42. One end of the first connecting rod 41 is hinged to the middle of the second connecting rod 42, and the other end of the first connecting rod 41 is hinged to the central shaft 31. One end of the second connecting rod 42 is connected to the eccentric disk 35, and the other end of the second connecting rod 42 is connected to the tail fin mounting bracket 2 via a telescopic rod 43. After the position of the eccentric disk 35 changes, the unfolding angle of the blades in the impeller mechanism 3 will also change specifically. Therefore, by precisely adjusting the position of the eccentric disk 35, the unfolding angle of the blades can be adjusted.

[0024] In this embodiment, the center of the fixing member 34 is fixedly connected to the central shaft 31, so that the fixing member 34 and the central shaft 31 move synchronously. The fixing member 34 is provided with mounting holes around its perimeter that mate with the blade shaft 32, and the blade shaft 32 is rotatably connected to the fixing member 34 through the mounting holes. A rotating disk 7 is provided above the base 1, and the tail fin mounting bracket 2 is mounted on the rotating disk 7. The rotating disk 7 is used to assist the tail fin mounting bracket 2 in rotating freely. The lower end of the central shaft 31 passes through the rotating disk 7 and is connected to the generator 6 under the base 1.

[0025] Example 2 like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that there are two impeller mechanisms 3 in this embodiment. The two impeller mechanisms 3 are arranged side by side, and the blades of the two impeller mechanisms 3 rotate in opposite directions. All blades unfold when rotating away from the other impeller mechanism and retract when rotating towards the other impeller mechanism. A wind deflector 9 is provided between the two impeller mechanisms. The wind deflector 9 can separate the airflow blowing between the two impeller mechanisms to both sides, and concentrate it on the unfolded blades. A fixing plate is provided on the top of the wind deflector 9, and the upper end of the central shaft 31 can be rotatably fixed on the fixing plate. The central shafts of the two impeller mechanisms are connected to the two input ends of the speed increaser 8 located below. The input ends of the speed increaser 8 pass through the rotating disk 7 below and are connected to the generator 6.

[0026] In some embodiments, the two impeller mechanisms can also share a tail fin 5 to achieve angle adjustment of the tail fin mounting bracket 2. For example, the two brackets can be connected by a connecting rod so that the two brackets can rotate synchronously, so that only one tail fin needs to be installed to save costs.

[0027] Example 3 like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the central shaft of the impeller mechanism is sufficiently long, and more blades are arranged on the central shaft. The blades are divided into multiple groups, with each group corresponding to a tail fin mounting bracket 2 and its tail fin 5. The mounting height of each group of blades is different, and the unfolding angle of each group is also different. For example, blades in adjacent groups can be staggered by 15 degrees. This makes the angle distribution of the blades on the entire impeller mechanism more diverse and reasonable, thus better adapting to different wind directions. Since wind directions can vary significantly at different heights, dividing the blades into groups results in a higher energy conversion rate than directly using blades of greater length. In this embodiment, multiple mounting columns 10 are also arranged around the central shaft, which is movably connected to the mounting columns. The mounting columns support the central shaft and prevent it from tipping over. A fixing plate is provided at the top of the mounting column 10, and the top of the central shaft is rotatably connected to the fixing plate.

[0028] The above are only some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various combinations and modifications of the aforementioned technical features. Any improvements, modifications, equivalent substitutions, or applications of the structure or method of the present invention to other fields to achieve the same effect without departing from the spirit and scope of the present invention shall fall within the protection scope of the present invention.

Claims

1. A vertical axis wind turbine that can adapt to wind direction, comprising a base and a bladed mechanism, characterised in that: The base is provided with a tail wing mounting bracket, which is movably connected with the base; the impeller mechanism is arranged on the tail wing mounting bracket; the impeller mechanism comprises a central shaft, a blade and an eccentric disc, both ends of the central shaft are movably connected with the tail wing mounting bracket, the blade comprises a blade shaft and a blade body, the blade shaft is connected with the central shaft through a fixing member, the eccentric disc is arranged on the central shaft, the blade shaft cooperates with the eccentric disc through an adjusting rod, when the blade rotates around the central shaft, the blade periodically changes the unfolding angle due to the interaction between the blade shaft and the eccentric disc; that is, the blade gradually unfolds on one side of the central shaft, and gradually closes on the other side; the tail wing mounting bracket is provided with a tail wing, which is used for adjusting the rotation angle of the tail wing mounting bracket in real time according to the wind direction.

2. The vertical axis wind turbine with self-adapting wind direction according to claim 1, characterized in that: The tail wing mounting bracket is U-shaped, comprising a vertical rod and horizontal rods located at both ends of the vertical rod, the impeller mechanism is arranged on the inner side of the tail wing mounting bracket, that is, between the two horizontal rods, and the tail wing is arranged on the outer side of the vertical rod, that is, on the side away from the horizontal rods.

3. The vertical axis wind turbine with self-adapting wind direction according to claim 1, characterized in that: The tail wing is flat, and the side area of the tail wing is greater than the side area of any blade, so that the thrust of the wind received by the tail wing is greater than the force received by the related blade in the impeller mechanism.

4. The vertical axis wind turbine with self-adapting wind direction according to claim 1, characterized in that: The eccentric disc is movably connected with the central shaft through the mounting hole.

5. The vertical axis wind turbine of claim 4, wherein: The blade shaft cooperates with the ring groove through the adjusting rod, one end of the adjusting rod is fixedly connected with the blade shaft, and the other end of the adjusting rod is limited to move along the ring groove.

6. The vertical axis wind turbine with self-adapting wind direction according to any one of claims 1-5, characterized in that: The eccentric disc is fixedly connected with the tail wing mounting bracket.

7. The vertical axis wind turbine of any one of claims 1 to 5, wherein: The eccentric disc is movably connected with the tail wing mounting bracket through the adjusting mechanism, and the adjusting mechanism is used for adjusting the relative position between the eccentric disc and the tail wing mounting bracket.

8. The vertical axis wind turbine of claim 7, wherein: The adjusting mechanism comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hingedly connected with the middle portion of the second connecting rod, the other end of the first connecting rod is hingedly connected with the central shaft, one end of the second connecting rod is connected with the eccentric disc, and the other end of the second connecting rod is connected with the tail wing mounting bracket through an extension rod.

9. The vertical axis wind turbine with self-adapting wind direction according to claim 1, characterized in that: The blades on the central shaft are divided into a plurality of groups, the installation height of the blades in each group is different, and each group of blades corresponds to a tail wing mounting bracket and a tail wing, and the unfolding angles of the blades in different groups are staggered.

10. The vertical axis wind turbine with self-adapting wind direction according to claim 1, characterized in that: The upper portion of the base is provided with a rotating disc, the tail wing mounting bracket is arranged on the rotating disc, the rotating disc is used for assisting the tail wing mounting bracket to freely rotate, and the lower end of the central shaft is connected with a generator under the base after penetrating through the rotating disc.

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