CN221322581U - Bionic vertical axis wind turbine with spoiler - Google Patents
Bionic vertical axis wind turbine with spoiler Download PDFInfo
- Publication number
- CN221322581U CN221322581U CN202323105843.1U CN202323105843U CN221322581U CN 221322581 U CN221322581 U CN 221322581U CN 202323105843 U CN202323105843 U CN 202323105843U CN 221322581 U CN221322581 U CN 221322581U
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- spoiler
- wind turbine
- bionic
- vertical axis
- axis wind
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 26
- 238000004804 winding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model discloses a bionic vertical axis wind turbine with a spoiler, which comprises a base, wherein a rotating shaft is vertically arranged on the base, the bottom end of the rotating shaft is in rotary connection with the base, a plurality of lifting blades are vertically arranged around the rotating shaft, if the axes of the rotating shaft are uniformly distributed, a first supporting rod is arranged between the lifting blades and the rotating shaft, the lifting blades are fixedly connected with the rotating shaft through the first supporting rod, the spoiler is vertically arranged on one side, close to the rotating shaft, of the lifting blades, a second supporting rod is arranged between the spoiler and the lifting blades, and the spoiler is fixedly connected with the lifting blades through the second supporting rod. The bionic vertical axis wind turbine with the spoiler provided by the utility model has the advantages that the self-starting performance of the wind turbine is improved under the condition of low tip speed ratio, and the power coefficient of the wind turbine is improved under the condition of medium and low tip speed ratio.
Description
Technical Field
The utility model relates to the technical field of wind power generation, in particular to a bionic vertical axis wind turbine with a spoiler.
Background
Wind power generation is rapidly increasing in recent years as a clean and pollution-free renewable energy source technology, and the vertical axis wind turbine has obvious advantages in building dense urban environments by virtue of the advantages of small wind wheel size, capability of receiving incoming flows in all directions, low working condition noise, small visual impact on people when running and the like, and is one of the important points of research in recent years.
The traditional vertical axis wind turbine blade often has the defects of low wind energy utilization coefficient, low self-starting performance and the like, and the novel bionic blade designed by the bionic principle provides a new research thought for designing the blade with high wind energy utilization coefficient and good self-starting performance. The wing structure with unique category provides excellent flying performance for the wing structure, so the owl wing appearance characteristic is researched and applied to the design of the wind turbine blade, and the wing structure is a feasible method for designing the wind turbine with high wind energy utilization coefficient. In addition, the spoiler is widely applied to instruments such as automobiles, airplanes and the like, is an aerodynamic part, can provide additional pressure, and can obviously improve the dynamic property and stability of the instruments. Therefore, the bionic vertical axis wind turbine with the spoiler can be designed by combining the advantages of the novel bionic blade and the spoiler.
Disclosure of utility model
The utility model aims to provide a bionic vertical axis wind turbine with a spoiler, which improves the self-starting performance of the wind turbine under the condition of low tip speed ratio and improves the power coefficient of the wind turbine under the condition of medium and low tip speed ratio.
The utility model discloses a bionic vertical axis wind turbine with a spoiler, which adopts the following technical scheme:
The utility model provides a bionical vertical axis wind turbine with spoiler, includes the base, the vertical revolving shaft that is equipped with on the base, the bottom and the base rotation of revolving shaft are connected, the vertical a plurality of lift blade that is equipped with all around of revolving shaft, a plurality of lift blade winding revolving shaft's axis evenly distributed, be equipped with first bracing piece between lift blade and the revolving shaft, through first bracing piece fixed connection between lift blade and the revolving shaft, lift blade is close to the vertical spoiler that is equipped with in revolving shaft one side, be equipped with the second bracing piece between spoiler and the lift blade, through second bracing piece fixed connection between spoiler and the lift blade.
Preferably, the spoiler is a NACA0012 airfoil.
As a preferable scheme, the profile of the lift blade adopts wing section bionic at 40% of the wing along the length direction.
Preferably, the height of the spoiler is equal to the height of the lift blades.
Preferably, the number of the first support rods is a plurality.
The bionic vertical axis wind turbine with the spoiler disclosed by the utility model has the beneficial effects that: by adding the spoiler structure, extra torque is provided, the self-starting performance of the wind turbine is improved under the condition of low tip speed ratio, and the power coefficient of the wind turbine is improved under the condition of medium and low tip speed ratio.
Drawings
FIG. 1 is a schematic diagram of a bionic vertical axis wind turbine with spoilers according to the present utility model.
FIG. 2 is a top view of a bionic vertical axis wind turbine with spoilers according to the present utility model.
Fig. 3 is an enlarged view of a portion a in fig. 2.
FIG. 4 is a schematic diagram showing the comparison of instantaneous power coefficients of a bionic vertical axis wind turbine with spoilers and a standard wind turbine at low tip speed ratios according to the present utility model.
FIG. 5 is a schematic diagram showing the comparison of instantaneous power coefficients of a bionic vertical axis wind turbine with spoilers and a standard wind turbine at a high tip speed ratio.
10. A base; 11. a rotating shaft; 20. a lift blade; 30. a first support bar; 40. a spoiler; 50. and a second support bar.
Detailed Description
The utility model is further illustrated and described below in conjunction with the specific embodiments and the accompanying drawings:
Referring to fig. 1 to 3, a bionic vertical axis wind turbine with a spoiler comprises a base 10, a rotating shaft 11 is vertically arranged on the base 10, the bottom end of the rotating shaft 11 is rotationally connected with the base 10, a plurality of lift blades 20 are vertically arranged around the rotating shaft 11, the plurality of lift blades 20 are uniformly distributed around the axis of the rotating shaft 11, a first supporting rod 30 is arranged between the lift blades 20 and the rotating shaft 11, the lift blades 20 and the rotating shaft 11 are fixedly connected through the first supporting rod 30, wind flow rotates by blowing the lift blades 20, thereby driving the rotating shaft 11 to rotate, the first supporting rod 30 is used for installing the lift blades 20, the number is not limited, a spoiler 40 is vertically arranged on one side, close to the rotating shaft 11, of the lift blades 20, a second supporting rod 50 is arranged between the spoiler 40 and the lift blades 20, the height of the spoiler 40 is equal to the height of the lift blades 20 through the second supporting rod 50, the number is not limited, and the number is not limited by increasing the structure of the spoiler 40, the additional torque is provided, the self-power ratio of the wind turbine is improved under the condition of low-blade tip speed ratio, and the wind turbine is started under the low-power ratio.
Referring to FIG. 3, the spoiler 40 is a NACA0012 airfoil. The profile of spoiler 40 selects the profile of prototype blade 0012. The spoiler 40 is designed with four parameters, namely the chord length of the spoiler 40, the distance from the blade edge, the distance from the blade surface and the rotation angle. The specific characteristics are as follows: when the chord length of the blade is c, the chord length of the spoiler 40 ranges from 0.1c to 0.3c (42 mm to 126 mm), the distance from the trailing edge of the blade ranges from 0.25c to 0.75c (105 mm to 315 mm), the distance from the surface of the blade ranges from 0.1c to 0.3c (42 mm to 126 mm), the rotation angle of the spoiler 40 ranges from 10 degrees to 30 degrees, and finally, the rotation angle of the spoiler 40 is determined by the relevant research of numerical simulation analysis: the chord length is 42mm, the distance from the trailing edge is 315mm, the distance from the blade surface is 42mm, and the rotation angle is 10 degrees. The addition of the spoiler 40 structure provides additional torque, especially at low tip speed ratios.
Referring to FIG. 3, the lift blade 20 is shaped as a wing with a wing section at 40% of the wing along the length. The irregular shape of the bionic wing type enables the flow velocity difference of fluid on two sides of the blade to be larger and the pressure point to be closer to the surface of the blade, so that the pressure difference on two sides of the blade is larger, larger torque is provided for the blade, and the power coefficient is improved.
Referring to fig. 4, fig. 4 is a graph showing a comparison of instantaneous moment coefficients of a single blade of a bionic wind turbine with a spoiler 40 and a prototype wind turbine at a tip speed ratio of 1.2. It can be seen from the figure that the instantaneous moment coefficient of the modified wind turbine is greatly improved compared with that of the original wind turbine under the condition that the rotation angle is 30-150 degrees, and the instantaneous moment coefficient between the rotation angle and 360 degrees is not greatly different between the two wind turbines. The aerodynamic performance of the modified wind turbine is better than that of the original wind turbine under the condition of medium and low tip speed ratios.
Referring to fig. 5, fig. 5 is a graph showing a comparison of instantaneous moment coefficients of a single blade of a bionic wind turbine with a spoiler 40 and a prototype wind turbine at a tip speed ratio of 2.8. It can be seen from the figure that the instantaneous moment coefficients of the modified wind turbine are substantially the same at each rotation angle as the prototype wind turbine, i.e. the aerodynamic performance of the prototype wind turbine is not reduced by the modified wind turbine at high tip speed ratios.
Combining fig. 4 and 5, the aerodynamic performance of the modified wind turbine is better than that of the prototype wind turbine.
The bionic vertical axis wind turbine with the spoiler provides additional torque by adding the spoiler structure, improves the self-starting performance of the wind turbine under the condition of low tip speed ratio, and improves the power coefficient of the wind turbine under the condition of medium and low tip speed ratio.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (5)
1. The utility model provides a bionical vertical axis wind turbine with spoiler, its characterized in that, the on-line screen storage device comprises a base, the vertical revolving axle that is equipped with on the base, the bottom and the base rotation of revolving axle are connected, the vertical a plurality of lift blade that is equipped with all around of revolving axle, a plurality of lift blade winding revolving axle's axis evenly distributed, be equipped with first bracing piece between lift blade and the revolving axle, through first bracing piece fixed connection between lift blade and the revolving axle, lift blade is close to the vertical spoiler that is equipped with in revolving axle one side, be equipped with the second bracing piece between spoiler and the lift blade, through second bracing piece fixed connection between spoiler and the lift blade.
2. A bionic vertical axis wind turbine with spoilers as in claim 1 wherein said spoilers are selected from the group consisting of NACA0012 airfoils.
3. The bionic vertical axis wind turbine with a spoiler according to claim 1, wherein the lift blades are shaped like wing sections at 40% of the length of the owl wings.
4. The bionic vertical axis wind turbine with spoiler of claim 1, wherein the height of the spoiler is equal to the height of the lift blades.
5. The bionic vertical axis wind turbine with a spoiler of claim 1, wherein the number of first support rods is a plurality.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221322581U true CN221322581U (en) | 2024-07-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |