A vertical axis wind turbine system with adjustable power generation

Abstract

The present invention discloses a vertical axis wind turbine generator system with adjustable power generation, which relates to the technical field of wind power generation, comprises a support seat and a plurality of wind blades, a blade support is fixedly arranged on one side of the wind blade, a generator is fixedly installed on the upper end of the support seat, a middle axis rod is fixedly connected to the output end of the generator, an upper axis rod is fixedly connected to the upper end of the middle axis rod, a plurality of lower supports are fixedly arranged on the periphery of the middle axis rod, a lower connecting rod is rotatably connected to the lower supports, and the lower connecting rod is rotatably connected to the blade supports at the lower parts of the wind blades; a plurality of upper supports are fixedly arranged on the periphery of the upper axis rod, an upper connecting rod is rotatably arranged on the upper supports, and the upper connecting rod is rotatably connected to the blade supports at the upper parts of the wind blades; a regulating component for adjusting the position of the wind blades is installed on the upper axis rod; the present invention adjusts the wind wheel swept area of ​​the wind blades according to different environmental wind speeds, thereby ensuring that the generator can maintain stable power generation and adapt to the corresponding wind speed, thereby effectively improving the wind power generation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a vertical axis wind power generator system with adjustable power generation. Background Art

[0002] Wind turbines are electrical equipment that convert wind energy into mechanical energy and mechanical energy into electrical energy. Currently, large and medium-sized wind power mainly uses horizontal axis wind turbines, which are lift-type wind turbines with the advantages of high speed and high wind utilization rate. The mainstream wind turbines currently put into commercial operation are basically horizontal axis wind turbines.

[0003] Wind turbines are supported by vertical towers. With the continuous increase in the capacity of horizontal axis wind turbines, the capacity of mainstream wind turbines has reached 2MW-3.5MW, and the weight of the corresponding generator cabin has reached 70-100 tons, and the cabin height has reached about 100 meters. The cost of equipment production, transportation and installation has increased significantly, so the development of horizontal axis wind turbines has reached a bottleneck period.

[0004] A wind turbine with a vertical rotating axis is called a vertical axis wind turbine. Vertical axis wind turbines have the advantages of low noise and simple maintenance. The rotor axis of a traditional H-type vertical axis wind turbine is vertical, and both ends of the rotor axis are connected to a beam or plate. A number of horizontal support rods are fixed on the rotor axis in a radial pattern with the rotor axis as the center; vertical blades (blades) are fixed at the ends of the horizontal support rods, and the blades (blades) have a certain angle (angle of attack). When the blades are blown by the wind, the wind rotor as a whole rotates around the center of the rotor axis; the rotor of the generator is fixed on the rotor axis, and the rotor rotates with the rotor axis. The stator of the generator is fixed on the beam or plate and is stationary. When the wind rotor rotates, the rotor axis drives the rotor to rotate relative to the stator to generate electricity.

[0005] Due to the different wind speeds in the natural environment, the size of the blades of existing wind turbines is fixed, which makes it impossible for the generator to adjust the power generation according to the wind speed. Therefore, at higher wind speeds, the power generation of the generator exceeds the rated power, causing damage to the generator, while the power generation effect is poor at low wind speeds. Summary of the invention

[0006] The purpose of the present invention is to provide a vertical axis wind turbine system with adjustable power generation, so as to solve the technical problem that the blades of the generator cannot be adjusted, resulting in poor power generation effect of the generator or damage caused by exceeding the rated power.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A vertical axis wind turbine system with adjustable power generation capacity comprises a support base and a plurality of wind blades, wherein blade supports are fixedly provided on the lower and upper parts of one side of the wind blades, a generator is fixedly mounted on the upper end of the support base, a central axis rod is fixedly connected to the output end of the generator, an upper axis rod is fixedly connected to the upper end of the central axis rod, a plurality of lower supports are fixedly provided on the periphery of the central axis rod, a lower connecting rod is rotatably connected to the lower supports, and the lower connecting rod is rotatably connected to the blade supports at the lower parts of the wind blades; a plurality of upper supports are fixedly provided on the periphery of the upper axis rod, an upper connecting rod is rotatably mounted on the upper supports, and the upper connecting rod is rotatably connected to the blade supports at the upper parts of the wind blades; a regulating component for adjusting the position of the wind blades is mounted on the upper axis rod.

[0009] Preferably, a flange is fixedly provided on the upper end of the middle shaft, and a connecting plate matching the flange is fixedly provided on the lower end of the upper shaft, and the flange and the connecting plate are fixedly connected by bolts and nuts.

[0010] Preferably, a controller is connected to the generator, and the controller is control-connected to the regulating component.

[0011] Preferably, the regulating component includes a motor plate fixedly mounted on the top of the upper shaft and a bearing seat fixedly mounted on the lower part of the upper shaft, a driving motor is fixedly mounted on the motor plate, an output end of the driving motor is fixedly connected to an adjustment shaft, the adjustment shaft is rotatably mounted on the bearing seat, a plurality of adjustment cables are fixedly connected to the adjustment shaft, and the other end of the adjustment cable is fixedly connected to one end of the lower connecting rod close to the wind fan blade through a cable hook.

[0012] Preferably, a plurality of guide pulleys are rotatably mounted on the outer periphery of the upper shaft rod, the positions and numbers of the plurality of guide pulleys correspond to the lower connecting rod, and the adjustment cable is slidably connected to the guide pulleys.

[0013] Preferably, a plurality of spring hooks 2 are fixedly provided on the outer periphery of the upper shaft rod, the number and position of the spring hooks 2 correspond to the upper connecting rod, a tension spring is fixedly connected to the spring hook 2, and the tension spring is fixedly connected to the side of the upper connecting rod close to the wind fan blade through the spring hook 1.

[0014] Preferably, when the wind speed is less than the rated wind speed, the controller controls the drive motor to rotate to release the adjustment cable, the wind fan blades expand outward and fully open, and the generator generates maximum power.

[0015] Preferably, when the wind speed is greater than the maximum power generation wind speed, the power generation power of the generator is higher than the maximum power, and the controller controls the drive motor to rotate to tighten the adjustment cable, reduce the wind wheel swept area, and reduce the power generation power of the generator to the rated power.

[0016] Preferably, when the ambient wind speed exceeds the limit wind speed for power generation, the controller controls the drive motor to rotate to completely retract the adjustment cable, the wind fan blades are completely retracted, the wind resistance mode is entered, and the generator stops generating electricity.

[0017] Preferably, when the ambient wind speed is less than the limit wind speed, the controller controls the drive motor to rotate to release the adjustment cable, and the wind fan blade moves downward under the action of the tension spring until the lower adjustment cable is tightened and the wind fan blade reaches a stable state.

[0018] Beneficial effects of the present invention:

[0019] (1) The swept area of ​​the wind fan blades is adjusted according to different environmental wind speeds to ensure that the generator can maintain stable power generation and adapt to the corresponding wind speed, thereby effectively improving the efficiency of wind power generation.

[0020] (2) When the wind speed is too high, the wind fan blades are fully retracted to effectively protect the generator and prevent the generator from exceeding the rated power and causing damage. This effectively protects the wind turbine and increases its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of the wind fan blades of the present invention when they are fully opened;

[0023] Figure 2 It is a schematic diagram of the structure of the wind fan blades of the present invention being half-folded;

[0024] Figure 3 It is a schematic diagram of the structure of the wind fan blades of the present invention when they are fully folded.

[0025] In the figure: 1. support seat; 2. generator; 3. middle shaft; 4. flange; 5. connecting plate; 6. upper shaft; 7. motor plate; 8. driving motor; 9. adjusting shaft; 10. bearing seat; 11. guide pulley; 12. adjusting cable; 13. cable hook; 14. lower connecting rod; 15. lower support; 16. upper support; 17. upper connecting rod; 18. spring hook one; 19. tension spring; 20. spring hook two; 21. fan blade support; 22. wind fan blade; 23. controller. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 3 As shown, the present invention is a vertical axis wind turbine generator system with adjustable power generation, comprising a support base 1 and a plurality of wind blades 22, wherein blade supports 21 are fixedly arranged on the lower and upper parts of one side of the wind blade 22, a generator 2 is fixedly installed on the upper end of the support base 1, a central axis rod 3 is fixedly connected to the output end of the generator 2, an upper axis rod 6 is fixedly connected to the upper end of the central axis rod 3, a plurality of lower supports 15 are fixedly arranged on the periphery of the central axis rod 3, a lower connecting rod 14 is rotatably connected to the lower support 15, and the lower connecting rod 14 is rotatably connected to the blade support 21 at the lower part of the wind blade 22; a plurality of upper supports 16 are fixedly arranged on the periphery of the upper axis rod 6, an upper connecting rod 17 is rotatably installed on the upper support 16, and the upper connecting rod 17 is rotatably connected to the blade support 21 at the upper part of the wind blade 22; a regulating component for adjusting the position of the wind blade 22 is installed on the upper axis rod 6.

[0028] In an optional embodiment, a flange 4 is fixedly provided on the upper end of the middle axis rod 3, and a connecting plate 5 matching with the flange 4 is fixedly provided on the lower end of the upper axis rod 6. The flange 4 and the connecting plate 5 are fixedly connected by bolts and nuts.

[0029] It should be noted that by providing the flange 4 and the connecting plate 5 matched therewith, the stability of the connection between the middle shaft rod 3 and the upper shaft rod 6 is improved.

[0030] In an optional embodiment, the generator 2 is connected to a controller 23, and the controller 23 is control-connected to the regulating component.

[0031] It should be noted that the controller 23 can adjust the swept area of ​​the wind fan blades 22 according to the wind speed to ensure efficient and stable use of wind power.

[0032] In an optional embodiment, the regulating component includes a motor plate 7 fixedly arranged on the top of the upper shaft 6 and a bearing seat 10 fixedly installed on the lower part of the upper shaft 6, a driving motor 8 is fixedly installed on the motor plate 7, an output end of the driving motor 8 is fixedly connected to an adjustment shaft 9, the adjustment shaft 9 is rotatably mounted on the bearing seat 10, a plurality of adjustment cables 12 are fixedly connected to the adjustment shaft 9, and the other end of the adjustment cable 12 is fixedly connected to one end of the lower connecting rod 14 close to the wind fan blade 22 through a cable hook 13.

[0033] It should be noted that the adjustment shaft 9 is driven by the driving motor 8 to rotate forward and reverse, thereby realizing the contraction and release of the adjustment cable 12 and realizing the retraction and extension control of the wind power fan blade 22.

[0034] In an optional embodiment, a plurality of guide pulleys 11 are rotatably mounted on the outer periphery of the upper shaft rod 6 , the positions and numbers of the plurality of guide pulleys 11 correspond to the lower connecting rod 14 , and the adjustment cable 12 is slidably connected to the guide pulleys 11 .

[0035] It should be noted that the guide pulley 11 is provided to reverse the connection direction of the adjustment cable 12 , thereby ensuring that the adjustment shaft 9 can stably control the retraction and extension of the adjustment cable 12 .

[0036] In an optional embodiment, a plurality of spring hooks 20 are fixedly provided on the outer periphery of the upper shaft rod 6, the number and position of the spring hooks 20 correspond to the upper connecting rod 17, a tension spring 19 is fixedly connected to the spring hook 20, and the tension spring 19 is fixedly connected to the side of the upper connecting rod 17 close to the wind fan blade 22 through a spring hook 18.

[0037] It should be noted that the tension spring 19 is provided to elastically support the contraction and expansion of the wind fan blades 22, thereby ensuring that the wind fan blades 22 remain stable during operation.

[0038] In an optional embodiment, when the wind speed is less than the rated wind speed, the controller 23 controls the drive motor 8 to rotate to release the adjustment cable 12, the wind fan blades 22 expand outward and fully open, and the power generation power of the generator 2 is maximized.

[0039] It should be noted that when the wind speed is low, the wind power generation efficiency can be effectively improved by expanding the swept area of ​​the wind rotor.

[0040] In an optional embodiment, when the wind speed is greater than the maximum power generation wind speed, the power generation power of the generator 2 is higher than the maximum power, and the controller 23 controls the drive motor 8 to rotate to tighten the adjustment cable 12, thereby reducing the wind wheel swept area and reducing the power generation power of the generator 2 to the rated power.

[0041] It should be noted that the rotor swept area of ​​the wind blades 22 is adjusted according to different environmental wind speeds, thereby ensuring that the generator 2 can maintain stable power generation and adapt to the corresponding wind speed, thereby effectively protecting the wind generator.

[0042] In an optional embodiment, when the ambient wind speed exceeds the limit wind speed for power generation, the controller 23 controls the drive motor 8 to rotate to completely retract the adjustment cable 12, the wind fan blades 22 are completely retracted, entering the wind resistance mode, and the generator 2 stops generating electricity.

[0043] It should be noted that when the wind speed is too high, the complete retraction of the wind fan blades 22 can effectively protect the generator 2, prevent the generator 2 from exceeding the rated power and causing damage, and increase the service life of the wind turbine.

[0044] In an optional embodiment, when the ambient wind speed is less than the limit wind speed, the controller 23 controls the drive motor 8 to rotate to release the adjustment cable 12, and the wind fan blades 22 move downward under the action of the tension spring 19 until the lower adjustment cable 12 is tightened and the wind fan blades 22 reach a stable state.

[0045] It should be noted that the rotor swept area of ​​the wind blades 22 is adjusted according to different environmental wind speeds, thereby ensuring that the generator 2 can maintain stable power generation and adapt to the corresponding wind speed.

[0046] The working principle of the present invention is as follows: when the wind speed is less than the rated wind speed, the controller 23 controls the drive motor 8 to rotate to release the adjustment cable 12, the wind blades 22 expand outward and fully open, and the power generation power of the generator 2 is maximum. When the wind speed is greater than the maximum power generation wind speed, the power generation power of the generator 2 is higher than the maximum power, and the controller 23 controls the drive motor 8 to rotate to converge the adjustment cable 12, reduce the swept area of ​​the wind wheel, and reduce the power generation power of the generator 2 to the rated power. When the ambient wind speed exceeds the limit wind speed of power generation, the controller 23 controls the drive motor 8 to rotate to completely converge the adjustment cable 12, the wind blades 22 are completely retracted, enter the wind resistance model, and the generator 2 stops generating electricity. When the ambient wind speed is less than the limit wind speed, the controller 23 controls the drive motor 8 to rotate to release the adjustment cable 12, and the wind blades 22 move downward under the action of the tension spring 19 until the lower adjustment cable 12 is tightened and the wind blades 22 reach a stable state.

[0047] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A vertical axis wind turbine system with adjustable power generation, characterized in that: The invention comprises a support seat (1) and a plurality of wind blades (22), wherein a blade support seat (21) is fixedly arranged at the lower part and the upper part of one side of the wind blade (22), a generator (2) is fixedly installed at the upper end of the support seat (1), a central axis rod (3) is fixedly connected to the output end of the generator (2), an upper axis rod (6) is fixedly connected to the upper end of the central axis rod (3), a plurality of lower supports (15) are fixedly arranged on the outer periphery of the central axis rod (3), and a rotating upper support rod (15) is provided on the lower support rod (15). A lower connecting rod (14) is connected, and the lower connecting rod (14) is rotatably connected to a blade support (21) at the lower part of the wind fan blade (22); a plurality of upper supports (16) are fixedly arranged on the outer periphery of the upper shaft rod (6), and an upper connecting rod (17) is rotatably mounted on the upper support (16), and the upper connecting rod (17) is rotatably connected to a blade support (21) at the upper part of the wind fan blade (22); and a regulating component for adjusting the position of the wind fan blade (22) is mounted on the upper shaft rod (6).

2. A vertical axis wind turbine system with adjustable power generation according to claim 1, characterized in that: A flange (4) is fixedly provided at the upper end of the middle shaft (3), and a connecting plate (5) matching with the flange (4) is fixedly provided at the lower end of the upper shaft (6), and the flange (4) and the connecting plate (5) are fixedly connected by bolts and nuts.

3. A vertical axis wind turbine system with adjustable power generation according to claim 1, characterized in that: The generator (2) is connected to a controller (23), and the controller (23) is control-connected to the regulating component.

4. A vertical axis wind turbine system with adjustable power generation according to claim 3, characterized in that: The regulating component comprises a motor plate (7) fixedly arranged on the top of the upper shaft (6) and a bearing seat (10) fixedly installed on the lower part of the upper shaft (6); a driving motor (8) is fixedly installed on the motor plate (7); an output end of the driving motor (8) is fixedly connected to an adjustment shaft (9); the adjustment shaft (9) is rotatably installed on the bearing seat (10); a plurality of adjustment cables (12) are fixedly connected to the adjustment shaft (9); the other end of the adjustment cable (12) is fixedly connected to one end of the lower connecting rod (14) close to the wind fan blade (22) through a cable hook (13).

5. A vertical axis wind turbine system with adjustable power generation according to claim 4, characterized in that: A plurality of guide pulleys (11) are rotatably mounted on the outer periphery of the upper shaft rod (6); the positions and numbers of the plurality of guide pulleys (11) correspond to the lower connecting rod (14); and the adjustment cable (12) is slidably connected to the guide pulleys (11).

6. A vertical axis wind turbine system with adjustable power generation according to claim 4, characterized in that: A plurality of spring hooks (20) are fixedly arranged on the outer periphery of the upper shaft rod (6), the number and position of the spring hooks (20) correspond to the upper connecting rod (17), a tension spring (19) is fixedly connected to the spring hook (20), and the tension spring (19) is fixedly connected to a side of the upper connecting rod (17) close to the wind fan blade (22) through a spring hook (18).

7. A vertical axis wind turbine system with adjustable power generation according to claim 6, characterized in that: When the wind speed is less than the rated wind speed, the controller (23) controls the driving motor (8) to rotate to release the adjustment cable (12), the wind blades (22) expand outward and fully open, and the power generation power of the generator (2) is maximized.

8. The vertical axis wind turbine system with adjustable power generation according to claim 6, characterized in that: When the wind speed is greater than the maximum power generation wind speed, the power generation of the generator (2) is higher than the maximum power, and the controller (23) controls the drive motor (8) to rotate to tighten the adjustment cable (12), thereby reducing the swept area of ​​the wind wheel and reducing the power generation of the generator (2) to the rated power.

9. The vertical axis wind turbine system with adjustable power generation according to claim 6, characterized in that: When the ambient wind speed exceeds the limit wind speed for power generation, the controller (23) controls the drive motor (8) to rotate to completely retract the adjustment cable (12), and the wind fan blades (22) are completely retracted to enter the wind resistance mode, and the generator (2) stops generating electricity.

10. The vertical axis wind turbine system with adjustable power generation according to claim 6, characterized in that: When the ambient wind speed is less than the limit wind speed, the controller (23) controls the driving motor (8) to rotate to release the adjustment cable (12), and the wind fan blade (22) moves downward under the action of the tension spring (19) until the lower adjustment cable (12) is tightened and the wind fan blade (22) reaches a stable state.

Images