CN204783449U - Wind power generator - Google Patents
Wind power generator Download PDFInfo
- Publication number
- CN204783449U CN204783449U CN201520515736.2U CN201520515736U CN204783449U CN 204783449 U CN204783449 U CN 204783449U CN 201520515736 U CN201520515736 U CN 201520515736U CN 204783449 U CN204783449 U CN 204783449U
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- China
- Prior art keywords
- aerofoil profile
- maximum
- blade
- profound
- blade body
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model relates to a wind power generator, include the link and fix the rotatable blade on the link, wherein the blade includes the blade body, still includes the rectangle end wing and is located the blade body and holds the changeover portion between the wing, wherein the length of the end wing is 2-4 times of width that are located the tip of changeover portion one side of blade body, the width of the end wing is 0.5-1 times of length of the end wing, because wind power generator's blade is except the blade body, still include the rectangle end wing and be located the blade body and hold the changeover portion between the wing, the air current blows to back on the blade, gone out by the diffusion through the end wing again after through the changeover portion along the blade surface, can not form the vortex and produce the noise, and the blade is because the rotational speed is high when rotatory, the end wing of three blade can be similar to and form a ring, this ring is the horn mouth form, can produce the acceleration to the air current of blowing over, thereby the vane efficieney has been improved, wind power generator's power output has been increased.
Description
Technical field
The utility model relates to a kind of wind turbine equipment, more specifically to a kind of wind-driven generator.
Background technique
At present, known middle-size and small-size wind turbines rotor part is made up of three blades, blade tip does not process, be naturally finish up by aerofoil profile, this kind of structure blade is in wind-driven generator high speed operation process, and air-flow easily forms eddy current at blade tip, eddy current now has certain energy, this energy is discharged by noise, thus forms noise pollution, makes this kind of wind-driven generator should not be arranged on residential belt or living area like this.
Model utility content
In order to overcome the problems referred to above that prior art exists, the utility model provides a kind of novel wind-driven generator, the technological scheme that it adopts is: a kind of wind-driven generator, comprise link press span and be fixed on the rotating blade on link press span, described blade comprises blade body, also comprise the rectangular end wing and the changeover portion between blade body and the end wing, the length of the wherein said end wing is 2 ~ 4 times that are positioned at the width of the end of changeover portion side of blade body, and the width of the described end wing is 0.5 ~ 1 times of the length of the end wing.
The utility model further technical characteristics is:
Described changeover portion is rounded transition.
The described end wing has along the first aerofoil profile on rectangle length direction with along the second aerofoil profile on rectangle width direction, first aerofoil profile extends along the width direction of described blade body, and the leading edge of described first aerofoil profile, trailing edge are corresponding with the leading edge of described blade body, trailing edge respectively, simultaneously, described second aerofoil profile extends along the thickness direction of blade body, and leading edge, the trailing edge of the second aerofoil profile are corresponding with the windward side on vane thickness direction and lee face respectively.
The maximum profound length of described first aerofoil profile is 2 ~ 4 times of the width of the described end of described blade body, first aerofoil profile maximum profound wide is 2 times of the thickness of the described end of described blade body, the maximum profound length of described second aerofoil profile is 0.5 ~ 1 times of the maximum profound length of described first aerofoil profile, and the second aerofoil profile maximum profound wide is the maximum profound wide 0.5 ~ 1 times of described first aerofoil profile.
Described leading edge, the trailing edge of described first aerofoil profile are all circular arc, and the circular arc place diameter of a circle of described leading edge is the maximum profound wide half of described first aerofoil profile.
Maximum profound wide 1/3rd maximum profound strong points being positioned at the described leading edge of distance the first aerofoil profile of described first aerofoil profile.
Described leading edge, the trailing edge of described second aerofoil profile are all circular arc, and the circular arc place diameter of a circle of described leading edge is the maximum profound wide half of described second aerofoil profile.
Maximum profound wide 1/3rd maximum profound strong points being positioned at the described leading edge of distance the second aerofoil profile of described second aerofoil profile.
The beneficial effects of the utility model are:
Because the blade of wind-driven generator described in the utility model is except blade body, also comprise the rectangular end wing and the changeover portion between blade body and the end wing, air-flow blows to after on blade, along blade surface by being diffused away through the end wing again after changeover portion, can not eddy current be formed and produce noise, and because rotating speed is high during blade rotary, the end wing of three blades can be similar to formation annulus, again because the end wing has the first aerofoil profile and the second airfoil structure, the annulus formed in three blade rotation processes is made to become a bell mouth shape, this shape makes the front and back air-flow flowing through the end wing produce pressure difference, this pressure difference adds the flowing velocity of air-flow, improve the kinetic energy of air-flow, thus improve blade efficiency, add the power stage of wind-driven generator.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial structurtes sectional view of Fig. 1 Leaf
Fig. 3 is the schematic diagram of the end wing on width of blade direction in Fig. 2;
Fig. 4 is the schematic diagram of the end wing on vane thickness direction in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, a kind of wind-driven generator, the rotating blade comprising link press span 4 and be fixed on link press span, wherein said blade comprises blade body 1, also comprise the rectangular end wing 2 and the changeover portion 3 between blade body 1 and the end wing 2, the length of the wherein said end wing is 2 ~ 4 times that are positioned at the width a of the end of changeover portion side of blade body, and the width of the described end wing is 0.5 ~ 1 times of the length of the end wing.Can see in the embodiment shown in Fig. 2 Fig. 3, changeover portion 3 is rounded transition.
Shown in Fig. 2, Fig. 3, Fig. 4, the end wing has along the first aerofoil profile 201 on rectangle length direction with along the second aerofoil profile 202 on rectangle width direction, first aerofoil profile 201 extends along the width direction of described blade body 1, and the leading edge of described first aerofoil profile 201, trailing edge are corresponding with the leading edge of described blade body 1, trailing edge respectively, simultaneously, described second aerofoil profile 202 extends along the thickness direction of blade body, and leading edge, the trailing edge of the second aerofoil profile 202 are corresponding with the windward side 101 on vane thickness direction and lee face 102 respectively.
In actual applications, the maximum profound length of described first aerofoil profile 201 is 2 ~ 4 times of the width a of the described end of described blade body 1, first aerofoil profile 201 maximum profound wide is 2 times of the thickness of the described end of described blade body, the maximum profound length of described second aerofoil profile 202 is 0.5 ~ 1 times of the maximum profound length of described first aerofoil profile 201, and the second aerofoil profile 202 maximum profound wide is the maximum profound wide 0.5 ~ 1 times of described first aerofoil profile.
Described leading edge, the trailing edge of described first aerofoil profile 201 are all circular arc, and the circular arc place diameter of a circle of described leading edge is the maximum profound wide half of described first aerofoil profile.
Maximum profound wide 1/3rd maximum profound strong points being positioned at the described leading edge of distance the first aerofoil profile 201 of described first aerofoil profile 201.
Described leading edge, the trailing edge of described second aerofoil profile 202 are all circular arc, and the circular arc place diameter of a circle of described leading edge is the maximum profound wide half of described second aerofoil profile 202.
Maximum profound wide 1/3rd maximum profound strong points being positioned at the described leading edge of distance the second aerofoil profile 202 of described second aerofoil profile 202.
In practical operation, the end wing, after being interweaved by the first aerofoil profile 201 and the second aerofoil profile 202, gets its public part and form.
Because the blade of wind-driven generator described in the utility model is except blade body, also comprise the rectangular end wing 2 and the changeover portion 3 between blade body 1 and the end wing 2, air-flow blows to after on blade, along blade surface by being diffused away through the end wing 2 again after changeover portion 3, can not eddy current be formed and produce noise, and because rotating speed is high during blade rotary, the end wing 2 of three blades can be similar to formation annulus, again because the end wing 2 has the first aerofoil profile 201 and the second aerofoil profile 202 structure, the annulus formed in three blade rotation processes is made to become a bell mouth shape, this shape makes the front and back air-flow flowing through the end wing 2 produce pressure difference, this pressure difference adds the flowing velocity of air-flow, improve the kinetic energy of air-flow, thus improve blade efficiency, add the power stage of wind-driven generator.
Although describe embodiment herein, should be understood that, mode of execution disclosed is here only exemplary of the present utility model, and it can be presented as various forms.Therefore, here the detail disclosed is not considered to restrictive, and be only as the basis of claim and as instructing those skilled in the art differently to apply representational basis of the present utility model in appropriate mode any in reality, the various features comprising employing disclosed here also combine the feature that may clearly not disclose here.Protection domain of the present utility model is as the criterion with claims.
Claims (8)
1. a wind-driven generator, comprise link press span and be fixed on the rotating blade on link press span, it is characterized in that: described blade comprises blade body, also comprise the rectangular end wing and the changeover portion between blade body and the end wing, the length of the wherein said end wing is 2 ~ 4 times that are positioned at the width of the end of changeover portion side of blade body, and the width of the described end wing is 0.5 ~ 1 times of the length of the end wing.
2. wind-driven generator as claimed in claim 1, is characterized in that: described changeover portion is rounded transition.
3. wind-driven generator as claimed in claim 1, it is characterized in that: the described end wing has along the first aerofoil profile on rectangle length direction with along the second aerofoil profile on rectangle width direction, first aerofoil profile extends along the width direction of described blade body, and the leading edge of described first aerofoil profile, trailing edge are corresponding with the leading edge of described blade body, trailing edge respectively, simultaneously, described second aerofoil profile extends along the thickness direction of blade body, and leading edge, the trailing edge of the second aerofoil profile are corresponding with the windward side on vane thickness direction and lee face respectively.
4. wind-driven generator as claimed in claim 3, it is characterized in that: the maximum profound length of described first aerofoil profile is 2 ~ 4 times of the width of the described end of described blade body, first aerofoil profile maximum profound wide is 2 times of the thickness of the described end of described blade body, the maximum profound length of described second aerofoil profile is 0.5 ~ 1 times of the maximum profound length of described first aerofoil profile, and the second aerofoil profile maximum profound wide is the maximum profound wide 0.5 ~ 1 times of described first aerofoil profile.
5. the wind-driven generator as described in power claim 3 or 4, it is characterized in that: described leading edge, the trailing edge of described first aerofoil profile are all circular arc, the circular arc place diameter of a circle of described leading edge is the maximum profound wide half of described first aerofoil profile.
6. as power wind-driven generator according to claim 5, it is characterized in that: maximum profound wide 1/3rd maximum profound strong points being positioned at the described leading edge of distance the first aerofoil profile of described first aerofoil profile.
7. the wind-driven generator as described in power claim 3 or 4, it is characterized in that: described leading edge, the trailing edge of described second aerofoil profile are all circular arc, the circular arc place diameter of a circle of described leading edge is the maximum profound wide half of described second aerofoil profile.
8. as power wind-driven generator according to claim 7, it is characterized in that: maximum profound wide 1/3rd maximum profound strong points being positioned at the described leading edge of distance the second aerofoil profile of described second aerofoil profile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520515736.2U CN204783449U (en) | 2015-07-16 | 2015-07-16 | Wind power generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520515736.2U CN204783449U (en) | 2015-07-16 | 2015-07-16 | Wind power generator |
Publications (1)
Publication Number | Publication Date |
---|---|
CN204783449U true CN204783449U (en) | 2015-11-18 |
Family
ID=54523510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201520515736.2U Active CN204783449U (en) | 2015-07-16 | 2015-07-16 | Wind power generator |
Country Status (1)
Country | Link |
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CN (1) | CN204783449U (en) |
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2015
- 2015-07-16 CN CN201520515736.2U patent/CN204783449U/en active Active
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant |