CN211666842U - Efficient vertical axis wind turbine and blade thereof - Google Patents
Efficient vertical axis wind turbine and blade thereof Download PDFInfo
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- CN211666842U CN211666842U CN201921640180.4U CN201921640180U CN211666842U CN 211666842 U CN211666842 U CN 211666842U CN 201921640180 U CN201921640180 U CN 201921640180U CN 211666842 U CN211666842 U CN 211666842U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model discloses a high-efficient vertical axis aerogenerator and blade thereof relates to wind power generation technical field, and the area of the windward side of high-efficient vertical axis aerogenerator blade when leeward state is less than the area of windward side of blade when windward state, the area of blade leeward side is less than the area of windward side, and the resistance to the rotation of all the other blades when having reduced the blade leeward side is caused for the utilization efficiency of wind energy is higher, has improved the efficiency of electricity generation, and high-efficient vertical axis aerogenerator includes above-mentioned blade, through the structure of improving the generator blade, aerogenerator's generating efficiency has obtained the promotion, and the utilization efficiency of wind energy is higher.
Description
Technical Field
The utility model relates to a wind power generation technical field especially relates to a high-efficient vertical axis aerogenerator and blade thereof.
Background
The vertical axis wind driven generator on the market at present has the following defects: the reverse resistance is large, the pressure difference is adopted for power generation, the utilization efficiency of wind power is low, and the utilization efficiency of wind power is low; the area of the windward side of the blade is equal to the area of the leeward side, and the blade can cause resistance to the rotation of the vertical shaft in leeward, so that the efficiency of wind energy conversion is influenced.
As shown in fig. 1, an impeller structure of a typical conventional vertical axis wind turbine includes a central shaft 41, a plurality of supports 42 and blades 43, wherein the supports 42 connect the central shaft 41 and the blades 43, and when the impeller structure is in operation, wind blows a plurality of blades to rotate the central shaft through the supports to generate electricity, the blades are structurally fixed, that is, the windward side and the leeward side of the blades have the same area, and when wind blows from the same direction, the blades on the leeward side cause resistance to the rotation of other blades.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model provides a high-efficient vertical axis aerogenerator and blade thereof, the area of this blade leeward side when the leeward is less than the area of windward side when the windward, has reduced the rotational resistance that the blade produced when the blade leeward.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in one aspect, the utility model provides a high-efficient vertical axis aerogenerator blade, the area of the face that receives the wind of blade when leeward state is less than the area of the face that faces the wind of blade when the upwind state.
In the structure, the area of the leeward side of the blade is smaller than that of the windward side of the blade, so that the rotation resistance generated by the blade in leeward is reduced, the utilization efficiency of wind energy is higher, and the power generation efficiency is improved.
As the preferable technical scheme of the blade of the high-efficiency vertical axis wind driven generator, the blade is in the shape of a semi-cylindrical shell, a hemispherical shell or a multi-hook cambered surface.
The form of blade is not restricted to a certain one, can all carry out the pressure release design to the blade of various different shapes, has improved the practicality of this application.
As a preferred technical solution of the above high-efficiency vertical axis wind turbine blade, the blade is shaped like a semi-cylindrical shell, the semi-cylindrical shell is a cylindrical shell divided into two parts along the axial direction of the cylindrical shell, the semi-cylindrical shell includes a semi-arc surface and two semi-circular end surfaces respectively located at two ends of the semi-arc surface, and the semi-arc surface is provided with a pressure relief structure.
The blade of semicircle column casing shape is with pressure release structure setting at the semicircle cambered surface, through carrying out the pressure release on the semicircle cambered surface for the area of the windward side of blade is greater than the area of leeward side, has improved the utilization efficiency of wind energy.
As a preferred technical scheme of the blade of the high-efficiency vertical axis wind turbine, the pressure relief structure comprises a pressure relief window and a self-opening and self-closing pressure relief sheet, two mounting rods are arranged on the semicircular arc surface, the mounting rods are parallel to the axis of the semicircular arc surface, the self-opening and self-closing pressure relief sheet is rotatably mounted on the mounting rods, the pressure relief window is opened on the semicircular arc surface corresponding to the self-opening and self-closing pressure relief sheet, the self-opening and self-closing pressure relief sheet rotates to close the pressure relief window when the blade faces the wind, and the self-opening and self-closing pressure relief sheet rotates to open the pressure relief window when the blade faces the wind.
Through setting up from opening and shutting pressure release piece and pressure release window for when the windward, wind will blow from opening and shutting the pressure release piece and make its pressure in pressure release window department, and in the leeward, wind will blow from opening and shutting the pressure release piece and make it overturn to the inside of half cylinder casing, makes to form the breach on the semicircular arc face, reduces the leeward area.
As a preferred technical scheme of the high-efficiency vertical axis wind turbine blade, a longitudinal aileron is arranged on the windward side of the blade, and a gap is arranged at the joint of the longitudinal aileron and the blade.
Due to the arrangement of the longitudinal ailerons, when the ailerons face the wind, the area of the windward side can be further improved, the utilization efficiency of wind energy is further improved, the area of the windward side is increased while the leeward side is not increased, and the area difference between the windward side and the leeward side is further increased.
As a preferable technical solution of the above high-efficiency vertical axis wind turbine blade, a transverse aileron is arranged on the windward side of the blade, and the transverse aileron is arranged perpendicular to the longitudinal aileron.
The setting of horizontal aileron, when the windward, the area of improvement windward side that horizontal aileron can be further, further improvement to the utilization efficiency of wind energy, increased the area of windward side when not increasing the leeward side, further increased the area difference of windward side and leeward side, the connection structure intensity of vertical aileron and blade has been strengthened in the setting of horizontal aileron simultaneously for the intensity of blade is higher, has improved the life of blade.
As a preferable technical solution of the above-mentioned high-efficiency vertical-axis wind turbine blade, the transverse flap and the longitudinal flap are both cambered plates, and the cambered surfaces of the plates face in a direction away from the vertical axis.
The transverse ailerons and the longitudinal ailerons are arranged into the cambered plates, so that the area of the windward side of the blade is further increased, and the utilization efficiency of wind energy is further improved.
On the other hand, the utility model also provides a high-efficient vertical axis aerogenerator, include above-mentioned arbitrary high-efficient vertical axis aerogenerator blade.
By improving the structure of the generator blade, the generating efficiency of the wind driven generator is improved, and the utilization efficiency of wind energy is higher.
Has the advantages that:
1. the area of the leeward side of the blade is smaller than that of the windward side, so that the rotation resistance generated by the blade when the blade is leeward is reduced, the utilization efficiency of wind energy is higher, and the power generation efficiency is improved;
2. the form of the blade is not limited to a certain form, and the pressure relief design can be carried out on the blade aiming at various different shapes, so that the practicability of the pressure relief design is improved;
3. the pressure relief structure is arranged on the semicircular arc surface of the blade in the shape of the semi-cylindrical shell, and the pressure relief structure is arranged on the semicircular arc surface, so that the area of the windward side of the blade is larger than that of the leeward side of the blade, and the utilization efficiency of wind energy is improved;
4. the self-opening and self-closing pressure relief sheet and the pressure relief window are arranged, so that the self-opening and self-closing pressure relief sheet is blown by wind to be pressed at the pressure relief window when the wind is on the head, and the self-opening and self-closing pressure relief sheet is blown by wind to be turned over towards the inside of the semi-cylindrical shell when the wind is on the back, a gap is formed on the semi-arc surface, and the leeward area is reduced;
5. due to the arrangement of the longitudinal ailerons, when the wind is facing, the area of the windward side can be further increased by the longitudinal ailerons, the utilization efficiency of wind energy is further increased, the area of the windward side is increased while the leeward side is not increased, and the area difference between the windward side and the leeward side is further increased;
6. the transverse ailerons are arranged, so that the area of the windward side can be further increased when the blades face the wind, the utilization efficiency of wind energy is further increased, the area of the windward side is increased while the leeward side is not increased, the area difference between the windward side and the leeward side is further increased, and meanwhile, the connecting structure strength of the longitudinal ailerons and the blades is enhanced due to the arrangement of the transverse ailerons, so that the strength of the blades is higher, and the service life of the blades is prolonged;
7. the transverse ailerons and the longitudinal ailerons are arranged into the cambered plates, so that the area of the windward side of the blade is further increased, and the utilization efficiency of wind energy is further improved;
8. by improving the structure of the generator blade, the generating efficiency of the wind driven generator is improved, and the utilization efficiency of wind energy is higher.
Drawings
FIG. 1 is a schematic view of a prior art impeller configuration for a vertical axis wind turbine;
fig. 2 is a schematic overall structure diagram of a first viewing angle according to embodiment 1 of the present invention;
fig. 3 is a schematic overall structure diagram of a second viewing angle according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of embodiment 1 of the present invention with a third view angle, in which part of the outer cover body is detached;
fig. 5 is a schematic structural view of embodiment 1 of the present invention with a second view angle, in which part of the outer cover body is detached;
fig. 6 is an overall structure diagram of a first viewing angle according to embodiment 2 of the present invention;
fig. 7 is an overall structural diagram of a second viewing angle according to embodiment 2 of the present invention;
fig. 8 is an overall structural schematic diagram of a third viewing angle according to embodiment 2 of the present invention;
fig. 9 is a schematic view of the overall structure of embodiment 3 of the present invention.
Reference numerals:
reference numerals in fig. 1:
41. a central shaft; 42. a support; 43. a blade.
Reference numerals in fig. 2 to 9:
10. a blade body; 11. a pressure relief window; 20. a self-opening and self-closing pressure relief sheet; 30. a longitudinal flap; 31. a transverse flap.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
example 1:
as shown in fig. 2 to 5, the present embodiment provides a high efficiency vertical axis wind turbine blade, and the area of the windward side of the blade in the leeward state is smaller than the area of the windward side of the blade in the windward state.
In the structure, the area of the leeward side of the blade is smaller than that of the windward side of the blade, so that the rotation resistance generated by the blade in leeward is reduced, the utilization efficiency of wind energy is higher, and the power generation efficiency is improved.
In the present embodiment, the blade comprises a semi-cylindrical shell-like blade body 10. The form of blade is not restricted to a certain one, can all carry out the pressure release design to the blade of various different shapes, has improved the practicality of this application.
The blade body 10 is a cylindrical shell and is divided into two parts along the axial direction of the cylindrical shell, the blade body 10 comprises a semicircular arc surface and two semicircular end surfaces which are respectively positioned at two ends of the semicircular arc surface, and a pressure relief structure is arranged on the semicircular arc surface. The blade body 10 of this embodiment sets up pressure relief structure at the semicircle cambered surface, through carrying out the pressure relief on the semicircle cambered surface for the area of the windward side of blade is greater than the area of leeward side, has improved the utilization efficiency of wind energy.
The pressure relief structure includes pressure release window 11 and from opening and shutting pressure release piece 20, is equipped with two installation poles on the semicircle cambered surface, and the installation pole is on a parallel with the axis of semicircle cambered surface, and the pressure release piece 20 is rotatable to be installed on the installation pole from opening and shutting, and it has pressure release window 11 to correspond to open and shut pressure release piece 20 on the semicircle cambered surface, and pressure release window 11 is closed in the rotation of opening and shutting pressure release piece 20 when the blade windward, and pressure release window 11 is opened in the rotation of opening and shutting pressure release piece 20 when the blade leeward.
Through setting up from opening and shutting pressure release piece 20 and pressure release window 11 for in the leeward, wind will blow from opening and shutting pressure release piece 20 and make it overturn to the semi-cylinder casing is inside, makes to form the breach on the semicircle cambered surface, reduces the leeward area, and when the blade slowly turned to the windward from the leeward, wind will blow from opening and shutting pressure release piece 20 and make its pressure in pressure release window 11 department, closes pressure release window 11, has increased the windward.
The windward side of the blade body 10 is provided with a longitudinal aileron 30, and the joint of the longitudinal aileron 30 and the blade body 10 is provided with a gap.
Due to the arrangement of the longitudinal ailerons 30, when the wind is facing, the area of the windward side can be further increased by the longitudinal ailerons 30, the utilization efficiency of wind energy is further improved, the area of the windward side is increased while the leeward side is not increased, and the area difference between the windward side and the leeward side is further increased.
The notch is arranged because when the wind slowly turns to the windward from the leeward, the wind firstly blows the self-opening/closing pressure relief sheet 20 at one side of the blade body 10, after the self-opening/closing pressure relief sheet 20 at one side is blown, the self-opening/closing pressure relief sheet 20 at the other side is difficult to blow due to the arrangement of the longitudinal auxiliary wing 30, and after the notch is arranged, when the self-opening/closing pressure relief sheet 20 at one side is blown, an eddy current is formed in the blade body 10 due to the existence of the notch, and the self-opening/closing pressure relief sheet 20 at the other side is also blown.
The blade is provided with a transverse aileron 31 on the windward side, the transverse aileron 31 being arranged perpendicular to the longitudinal aileron 30.
The arrangement of the transverse ailerons 31 can further improve the area of the windward side of the transverse ailerons 31 when facing the wind, further improve the utilization efficiency of wind energy, increase the area of the windward side while not increasing the leeward side, further increase the area difference of the windward side and the leeward side, and meanwhile, the arrangement of the transverse ailerons 31 strengthens the strength of the connecting structure between the longitudinal ailerons 30 and the blades, so that the strength of the blades is higher, and the service life of the blades is prolonged.
Both the transverse flap 31 and the longitudinal flap 30 are cambered plates, the cambered surfaces of which face away from the vertical axis.
The transverse ailerons 31 and the longitudinal ailerons 30 are arranged into cambered plates, so that the area of the windward side of the blade is further increased, and the utilization efficiency of wind energy is further improved.
The embodiment also provides a high-efficiency vertical axis wind turbine, which comprises the high-efficiency vertical axis wind turbine blade in the shape of the semi-cylindrical shell.
By improving the structure of the generator blade, the generating efficiency of the wind driven generator is improved, and the utilization efficiency of wind energy is higher.
Example 2:
as shown in fig. 6, 7 and 8, the present embodiment provides an additional embodiment of a high efficiency vertical axis wind turbine blade, wherein the area of the windward side of the blade in the leeward state is smaller than the area of the windward side of the blade in the windward state. The area of the leeward side of the blade is smaller than that of the windward side, so that the rotating resistance generated by the blade in leeward is reduced, the utilization efficiency of wind energy is higher, and the power generation efficiency is improved.
In the present embodiment, the blade includes a blade body 10 shaped as a multi-hook arc surface. The pressure relief structure comprises an arc panel and two hook-shaped structures arranged on the arc panel, wherein the hook-shaped structures are provided with a pressure relief window 11 and a self-opening and self-closing pressure relief sheet 20. The self-opening and self-closing pressure relief sheet 20 is rotatably connected to the hook-shaped structure.
A plurality of column structures that collude can intercept wind when the windward, increased the rotatory power of wind promotion vertical axis, the utilization efficiency of wind energy has been increased, when the leeward, blow the upset from the back by wind from opening and shutting pressure release piece 20, open pressure release window 11, the leeward side of blade is littleer, make a plurality of wind-force that collude the column structure and receive when the leeward littleer, turn to the in-process of windward slowly from the leeward at the blade, wind can blow the upset from opening and shutting pressure release piece 20, make it press in pressure release window 11 department, the windward side has been increased.
The embodiment also provides a high-efficiency vertical axis wind turbine, which comprises the high-efficiency vertical axis wind turbine blade in the shape of the multi-hook cambered surface.
By improving the structure of the generator blade, the generating efficiency of the wind driven generator is improved, and the utilization efficiency of wind energy is higher.
Example 3:
as shown in fig. 9, this embodiment provides an additional embodiment of a high efficiency vertical axis wind turbine blade having a smaller area of the wind-engaging surface when the blade is in the leeward state than the area of the wind-engaging surface when the blade is in the windward state. The area of the leeward side of the blade is smaller than that of the windward side, so that the rotating resistance generated by the blade in leeward is reduced, the utilization efficiency of wind energy is higher, and the power generation efficiency is improved.
In the present embodiment, the blade comprises a blade body 10 in the shape of a hemispherical shell. The blade body 10 comprises a hemispherical shell, a pressure relief window 11 and a self-opening and self-closing pressure relief sheet 20, wherein the pressure relief window 11 and the self-opening and self-closing pressure relief sheet 20 are arranged on the hemispherical shell, and the self-opening and self-closing pressure relief sheet 20 is rotatably connected with the hemispherical shell.
In the embodiment, when the blade is leeward, the self-opening/closing pressure relief sheet 20 is blown by wind from the back, and turns over to the inside of the blade body 10, and the pressure relief window 11 is opened, the leeward side of the blade becomes small, and in the process that the blade rotates from the leeward direction to the windward direction, wind gradually blows from the back of the blade and becomes to blow from the front of the blade, and here, the inside direction of the sphere of the blade body 10 is the front of the blade, and conversely, the back of the blade, and in the rotation process of the blade, wind blows into the inside of the blade body 10, and the self-opening/closing pressure relief sheet 20 is blown and turned over, and the self-opening/closing pressure relief sheet 20 is pressed on the pressure relief window 11, and.
The embodiment also provides a high-efficiency vertical axis wind turbine, which comprises the high-efficiency vertical axis wind turbine blade in the shape of the hemispherical shell.
By improving the structure of the generator blade, the generating efficiency of the wind driven generator is improved, and the utilization efficiency of wind energy is higher.
In this embodiment, the longitudinal flap 30 and the transverse flap 31 may be further disposed inside the blade body 10 to enhance the structural strength of the blade, increase the windward area of the blade when the blade is windward, and limit the self-opening/closing pressure relief sheet 20.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (7)
1. The blade is characterized in that the area of the windward side of the blade in the leeward state is smaller than the area of the windward side of the blade in the windward state, a pressure relief structure is arranged on the blade and comprises a pressure relief window and a self-opening and self-closing pressure relief sheet, the self-opening and self-closing pressure relief sheet is rotatably arranged on the blade, the pressure relief window is opened on the blade corresponding to the self-opening and self-closing pressure relief sheet, the pressure relief window is rotatably closed by the self-opening and self-closing pressure relief sheet when the blade faces the wind, and the pressure relief window is rotatably opened by the self-opening and self-closing pressure relief sheet when the blade is leeward.
2. A high efficiency vertical axis wind turbine blade as claimed in claim 1 wherein said blade is in the shape of a half cylinder shell, a hemispherical shell or a multi-cambered surface.
3. A blade for a high efficiency vertical axis wind turbine as defined in claim 2, wherein said blade is in the shape of a semi-cylindrical shell, said semi-cylindrical shell is in the shape of a cylinder divided into two parts along the axial direction, said semi-cylindrical shell comprises a semi-circular arc surface and two semi-circular end surfaces respectively located at two ends of the semi-circular arc surface, and said pressure relief structure is disposed on the semi-circular arc surface.
4. A high efficiency vertical axis wind turbine blade as defined in claim 1 wherein said blade is provided with a longitudinal aileron facing the wind.
5. A high efficiency vertical axis wind turbine blade as defined in claim 4 wherein said blade is provided with a transverse flap on the windward side, said transverse flap being arranged perpendicular to the longitudinal flap.
6. A high efficiency vertical axis wind turbine blade as claimed in claim 5 wherein the transverse and longitudinal flaps are cambered plates.
7. A high efficiency vertical axis wind turbine comprising a high efficiency vertical axis wind turbine blade according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640180.4U CN211666842U (en) | 2019-09-27 | 2019-09-27 | Efficient vertical axis wind turbine and blade thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921640180.4U CN211666842U (en) | 2019-09-27 | 2019-09-27 | Efficient vertical axis wind turbine and blade thereof |
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| CN211666842U true CN211666842U (en) | 2020-10-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594091A (en) * | 2019-09-27 | 2019-12-20 | 四川云智云造科技有限公司 | Efficient vertical axis wind turbine and blade thereof |
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2019
- 2019-09-27 CN CN201921640180.4U patent/CN211666842U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594091A (en) * | 2019-09-27 | 2019-12-20 | 四川云智云造科技有限公司 | Efficient vertical axis wind turbine and blade thereof |
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