CN109707562A - A kind of lift vertical shaft wind energy conversion system using full backward-swept blade - Google Patents
A kind of lift vertical shaft wind energy conversion system using full backward-swept blade Download PDFInfo
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- CN109707562A CN109707562A CN201910192458.4A CN201910192458A CN109707562A CN 109707562 A CN109707562 A CN 109707562A CN 201910192458 A CN201910192458 A CN 201910192458A CN 109707562 A CN109707562 A CN 109707562A
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- backward
- swept blade
- swept
- full
- full backward
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
A kind of lift vertical shaft wind energy conversion system using full backward-swept blade, including generator, transverse arm support rod, tower bar and full backward-swept blade；Generator is vertically installed at the top of tower bar, and transverse arm support rod one end is connected with generator, and the transverse arm support rod other end is connected with full backward-swept blade；Full backward-swept blade includes upper half backward-swept blade section and lower half backward-swept blade section, and upper half backward-swept blade section and lower half backward-swept blade section are symmetrical, and transverse arm support rod is connected at the symmetrical centre of upper half backward-swept blade section and lower half backward-swept blade section；Upper half backward-swept blade section is identical with lower half backward-swept blade section cross-sectional shape, is all made of aerofoil profile；Full backward-swept blade is V-shaped, and the leading edge of full backward-swept blade and V-type tip are ipsilateral, and the rear of full backward-swept blade and V-type open end are ipsilateral；The angle of sweep of full backward-swept blade is 1 °~89 °；The quantity of full backward-swept blade is 1~99；After lift vertical shaft wind energy conversion system uses full backward-swept blade, pneumatic efficiency and average annual energy output are obviously improved.
Description
Technical field
The invention belongs to vertical axis windmill technical fields, hang down more particularly to a kind of lift-type using full backward-swept blade
D-axis wind energy conversion system.
Background technique
Currently, energy shortages and environmental pollution are to have become the two big main problems for threatening human development, active development
With one of the effective way for using new energy being then the alleviation above problem.Wind energy is as a kind of renewable free of contamination cleaning energy
Source, after decades of development, wind power technology have become development and have applied most mature one of technology.Wind energy conversion system is to utilize wind
The capital equipment of energy, converts wind energy into mechanical energy, and then convert mechanical energy into electric energy by generator, and wind energy conversion system is pneumatic
The superiority and inferiority of characteristic directly affects the output power and generating efficiency of wind energy conversion system.Lift-type wind energy conversion system is by pneumatic equipment bladess lift
The wind energy conversion system of acting, primary structure pattern include horizontal-shaft wind turbine and vertical axis H-type wind energy conversion system, lift-type wind energy conversion system revolving speed compared with
Fastly, the power coefficient with higher under higher tip-speed ratio has obtained in distributed power generation field relatively broad at present
Using.Vertical axis H-type wind energy conversion system is typical lift vertical shaft wind energy conversion system, is structurally characterized in that and is enclosed vertically by multiple prismatic blades
It does work and then generates electricity around rotary shaft.
With the fast development of distributed power generation, small wind turbine is more next because of the advantages that its structure size is small, flexible for installation
More paid attention to.However, due to the high-quality wind field that the wind field of distributed power generation generates electricity different from extensive centralization, distributed power generation
Wind field environment usually there are the aerodynamic characteristics such as harmonic(-)mean wind speed, high turbulence and strong non-stationarity.In such wind field ring
Under border, the power coefficient of lift-type wind energy conversion system is generally lower.
In order to improve the pneumatic efficiency of small-sized lift-type wind energy conversion system, at present generally from pneumatic equipment bladess use aerofoil profile, wind
The aerodynamic configuration parameter optimization of power machine, the various aspects such as selection of generator have carried out research.However, merely from these sides
Face optimizes the pneumatic efficiency for being difficult to be significantly increased existing wind energy conversion system.In order to improve the pneumatic of small-sized lift-type wind energy conversion system
Efficiency, it is necessary to break through the Design of Aerodynamic Configuration of existing small wind turbine common blade.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of lift vertical shaft wind-force using full backward-swept blade
Machine breaches the design concept of conventional lift vertical shaft wind energy conversion system prismatic blade, and the full backward-swept blade used has novel
Aerodynamic configuration, compared with traditional prismatic blade, pneumatic efficiency and average annual energy output are obviously improved.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of lift-type using full backward-swept blade hangs down
D-axis wind energy conversion system, including generator, transverse arm support rod, tower bar and full backward-swept blade；The generator is vertically installed at tower bar top
Portion, transverse arm support rod one end are connected with generator, and the transverse arm support rod other end is connected with full backward-swept blade；The full backward-swept blade
Including upper half backward-swept blade section and lower half backward-swept blade section, upper half backward-swept blade section and lower half backward-swept blade section are symmetrical, institute
Transverse arm support rod is stated to be connected at the symmetrical centre of upper half backward-swept blade section and lower half backward-swept blade section.
The upper half backward-swept blade section of the full backward-swept blade is identical with lower half backward-swept blade section cross-sectional shape, is all made of the wing
Type.
The full backward-swept blade being made of the upper half backward-swept blade section and lower half backward-swept blade section is V-shaped, full backward-swept blade
Leading edge and V-type tip it is ipsilateral, the rear of full backward-swept blade and V-type open end are ipsilateral.
The angle of sweep of the full backward-swept blade is set as β, and β=1 °~89 °.
The quantity of the full backward-swept blade is 1~99.
Beneficial effects of the present invention:
Lift vertical shaft wind energy conversion system using full backward-swept blade of the invention, breaches conventional lift vertical shaft wind-force
The design concept of machine prismatic blade, the full backward-swept blade used has novel aerodynamic configuration, with traditional prismatic blade phase
Than pneumatic efficiency and average annual energy output are obviously improved.
Detailed description of the invention
Fig. 1 is a kind of front view of lift vertical shaft wind energy conversion system using full backward-swept blade of the invention；
Fig. 2 is a kind of top view of lift vertical shaft wind energy conversion system using full backward-swept blade of the invention；
Fig. 3 is the structural schematic diagram of full backward-swept blade of the invention；
In figure, 1-generator, 2-transverse arm support rods, 3-tower bars, 4-full backward-swept blades, 5-upper half backward-swept blade sections,
6-upper half backward-swept blade sections.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figures 1 to 3, a kind of lift vertical shaft wind energy conversion system using full backward-swept blade, including generator 1, transverse arm
Support rod 2, tower bar 3 and full backward-swept blade 4；The generator 1 is vertically installed at 3 top of tower bar, 2 one end of transverse arm support rod and hair
Motor 1 is connected, and 2 other end of transverse arm support rod is connected with full backward-swept blade 4；The full backward-swept blade 4 includes upper half backward-swept blade
Section 5 and lower half backward-swept blade section 6, upper half backward-swept blade section 5 and lower half backward-swept blade section 6 are symmetrical, the transverse arm support rod 2
It is connected at the symmetrical centre of upper half backward-swept blade section 5 and lower half backward-swept blade section 6.
The upper half backward-swept blade section 5 of the full backward-swept blade 4 is identical with lower half backward-swept blade 6 cross-sectional shapes of section, adopts
With NACA0015 aerofoil profile.
The full backward-swept blade 4 being made of the upper half backward-swept blade section 5 and lower half backward-swept blade section 6 is V-shaped, full sweepback leaf
The leading edge of piece 4 and V-type tip are ipsilateral, and the rear of full backward-swept blade 4 and V-type open end are ipsilateral.
The angle of sweep of the full backward-swept blade 4 is set as β, and β=45 °.
The quantity of the full backward-swept blade 4 is 3.
The pneumatic efficiency of wind energy conversion system can be evaluated by power coefficient with the change curve of tip-speed ratio,
In, the calculation formula of power coefficient is Cp=2PM/ρAV3, the calculation formula of tip-speed ratio is λ=wR/V, in formula, PM=2 π
NM/60, CPFor power coefficient, PMFor wind wheel mechanical output, ρ is atmospheric density, and A is swept area of rotor, and V is incoming flow wind
Speed, λ are tip-speed ratio, and w is that wind wheel rotates angle speed, and R is wind wheel radius of turn, and n is wind speed round, and M is rotor shaft torque.
When lift vertical shaft wind energy conversion system uses full backward-swept blade 4, premise that can be constant in wind energy conversion system swept area
Lower increase length of blade and area, so that the acting area of pneumatic equipment bladess increases；In wind energy conversion system rotary course, upper half sweepback
The linear velocity of blade sections 5 and lower half backward-swept blade section 6 can resolve into two parts, and first part is along leaf chord length
Tangential speed, second part be opened up along blade to exhibition Xiang Sudu, therein open up to speed can effectively control blade surface
Boundary layer flow and vane tip flow losses, to improve the pneumatic efficiency of wind energy conversion system.
The scope of patent protection that scheme in embodiment is not intended to limit the invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the patents of this case.
Claims (5)
1. a kind of lift vertical shaft wind energy conversion system using full backward-swept blade, it is characterised in that: supported including generator, transverse arm
Bar, tower bar and full backward-swept blade；The generator is vertically installed at the top of tower bar, and transverse arm support rod one end is connected with generator,
The transverse arm support rod other end is connected with full backward-swept blade；The full backward-swept blade includes upper half backward-swept blade section and lower half sweepback leaf
Segment, upper half backward-swept blade section and lower half backward-swept blade section are symmetrical, and the transverse arm support rod is connected to upper half backward-swept blade
At the symmetrical centre of section and lower half backward-swept blade section.
2. a kind of lift vertical shaft wind energy conversion system using full backward-swept blade according to claim 1, it is characterised in that: institute
The upper half backward-swept blade section for stating full backward-swept blade is identical with lower half backward-swept blade section cross-sectional shape, is all made of aerofoil profile.
3. a kind of lift vertical shaft wind energy conversion system using full backward-swept blade according to claim 2, it is characterised in that: by
The full backward-swept blade of the upper half backward-swept blade section and lower half backward-swept blade section composition is V-shaped, the leading edge and V-type of full backward-swept blade
Tip is ipsilateral, and the rear of full backward-swept blade and V-type open end are ipsilateral.
4. a kind of lift vertical shaft wind energy conversion system using full backward-swept blade according to claim 1, it is characterised in that: institute
The angle of sweep for stating full backward-swept blade is set as β, and β=1 °~89 °.
5. a kind of lift vertical shaft wind energy conversion system using full backward-swept blade according to claim 1, it is characterised in that: institute
The quantity for stating full backward-swept blade is 1~99.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192458.4A CN109707562A (en) | 2019-03-14 | 2019-03-14 | A kind of lift vertical shaft wind energy conversion system using full backward-swept blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192458.4A CN109707562A (en) | 2019-03-14 | 2019-03-14 | A kind of lift vertical shaft wind energy conversion system using full backward-swept blade |
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| Publication Number | Publication Date |
|---|---|
| CN109707562A true CN109707562A (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910192458.4A Pending CN109707562A (en) | 2019-03-14 | 2019-03-14 | A kind of lift vertical shaft wind energy conversion system using full backward-swept blade |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7040858B2 (en) * | 2001-12-14 | 2006-05-09 | Global Energy Co., Ltd | Wind power generator, windmill, and spindle and blade of the windmill |
| CN201650614U (en) * | 2010-05-07 | 2010-11-24 | 上海南征电子电气成套有限公司 | Wind generator with centrifugal clutch |
| CN101918707A (en) * | 2008-02-08 | 2010-12-15 | 安纽研究院 | Wind turbine rotor with vertical rotation axis |
| CN103511179A (en) * | 2012-06-21 | 2014-01-15 | 邓允河 | Wind wheel structure of vertical axis wind turbine and installation method thereof |
| CN209621519U (en) * | 2019-03-14 | 2019-11-12 | 沈阳航空航天大学 | A kind of lift vertical shaft wind energy conversion system using full backward-swept blade |
-
2019
- 2019-03-14 CN CN201910192458.4A patent/CN109707562A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7040858B2 (en) * | 2001-12-14 | 2006-05-09 | Global Energy Co., Ltd | Wind power generator, windmill, and spindle and blade of the windmill |
| CN101918707A (en) * | 2008-02-08 | 2010-12-15 | 安纽研究院 | Wind turbine rotor with vertical rotation axis |
| CN201650614U (en) * | 2010-05-07 | 2010-11-24 | 上海南征电子电气成套有限公司 | Wind generator with centrifugal clutch |
| CN103511179A (en) * | 2012-06-21 | 2014-01-15 | 邓允河 | Wind wheel structure of vertical axis wind turbine and installation method thereof |
| CN209621519U (en) * | 2019-03-14 | 2019-11-12 | 沈阳航空航天大学 | A kind of lift vertical shaft wind energy conversion system using full backward-swept blade |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190503 |
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| RJ01 | Rejection of invention patent application after publication |