CN102966487A - Noise-reduction fan blade for horizontal-shaft wind driven generator - Google Patents
Noise-reduction fan blade for horizontal-shaft wind driven generator Download PDFInfo
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- CN102966487A CN102966487A CN2012104934618A CN201210493461A CN102966487A CN 102966487 A CN102966487 A CN 102966487A CN 2012104934618 A CN2012104934618 A CN 2012104934618A CN 201210493461 A CN201210493461 A CN 201210493461A CN 102966487 A CN102966487 A CN 102966487A
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- driven generator
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- noise reduction
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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
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Abstract
The invention relates to a noise-reduction fan blade for a horizontal-shaft wind driven generator. With the adoption of the noise-reduction fan blade for the horizontal-shaft wind driven generator, the wind driven generator can generate partial turbulence in the rotation process, thereby reducing the noise of the wind driven generator. The noise-reduction fan blade for the horizontal-shaft wind driven generator differs from that any former fan blades for the wind driven generator. Most former fan blades are fabricated with manual glass fiber reinforced plastic molds, the surfaces are smooth, and no turbulence or noise reduction techniques are adopted. Compared with the traditional fan blades adopting the smooth and turbulence-free glass fiber reinforced plastic technique, the turbulent fan blade is directly formed through one step by injection molding with a carbon fiber composite and is small in error, and turbulent corrugated bulges can be distributed uniformly, so that the noise reduction effect is achieved thoroughly. With the adoption of the noise-reduction fan blade for the horizontal-shaft wind driven generator, the noise reduction effect is very obvious, the original fan blade design and fan blade parameters are not changed, but the noise can be reduced by at least one decibel.
Description
Technical field
The present invention relates to mechanical generator fan blade, particularly a kind of horizontal axis noise reduction power-driven generator leaf.
Background technique
Wind generating technology is very popular in countries such as Finland, Denmark, and China also advocates wind-power electricity generation energetically in the west area.
Wind-power electricity generation is to utilize wind-force to drive the air vane rotation, sees through booster engine with the speed lifting of rotation again, impels the generator generating.According to present windmill technology, approximately be the gentle breeze speed (degree of gentle breeze) of three meters of per seconds, just can begin generating.Wind-power electricity generation forms one upsurge just in the world, because wind-power electricity generation does not have fuel problem, also can not produce radiation or atmospheric pollution.
The fan blade of at present traditional wind-driven generator, what major part adopted is that the glass fibre reinforced plastics Manual mold is made smooth surface unconfined flow noise reduction technology.Compare the smooth unconfined flow technology of traditional glass steel fan blade, the flow-disturbing fan blade then is to adopt the direct mold injection once-through of carbon fiber composite, and error is little.The flow-disturbing fan blade can be guaranteed evenly branch of flow-disturbing ripple projection, thereby thoroughly realizes noise reduction.Adopt the fan blade of flow-disturbing ripple projection technology to compare the traditional fan blade that does not adopt ripple projection technology, its noise reduction is obvious, and to original traditional fan blade design and fan blade parameter without any change, but noise reduces more than 1 decibel at least.This is the noise reduction that traditional fan blade can't be realized forever.
Present most of horizontal axis wind-driven generator all is the fan blade that adopts without any noise reduction technology, under the wind speed of 12 meter per seconds, rotating speed 1000rpm noise is greater than 60 decibels, and under the same rotating speed of fan blade and output situation that the present invention adopts, noise descends 1 decibel (being equivalent to reduce the noise more than 1 half) at least.In family used, this successful did not have any noise jamming to daily life, and this is problem to be solved by this invention just.
Summary of the invention
As shown in Figure 4, main purpose of the present invention is to provide a kind of horizontal axis noise reduction power-driven generator leaf, and this wind-driven generator is comprised of wind blade main body structure 1 and ripple noise reduction convex design 2.The ripple noise reduction convex design 2 of wind blade main body structure 1 quilt cover is that the ripple convex design by wide 1mm, high 1mm forms, and the optimal case of the ripple height of projection of ripple noise reduction convex design 2 of the present invention is between 0.5mm to 3mm.
Such as Fig. 2, Fig. 3 and shown in Figure 4, the ripple projection that fan blade of the present invention adopts can make wind-driven generator produce local flow-disturbing in rotary course, arrange along the fan blade sense of rotation to the outer camber line, form little shape eddy current after the air-flow process fan blade back side flow-disturbing convex design 2 that both sides slip over up and down, the rotation and go out because the windward side is constant, so Driving force and fan blade performance parameter are constant, therefore greatly reduce the friction that fan blade slips over up and down airflow collision, thereby reduced the wind-driven generator noise.
The fan blade of the ripple noise reduction convex design 2 that adopts such as Fig. 1 and Fig. 4 the present invention is compared the traditional fan blade that does not adopt ripple noise reduction convex design 2, noise reduction is very obvious, and to the design of original fan blade and fan blade parameter all without any change, but noise reduces more than 1 decibel at least, and this is the noise reduction that traditional fan blade can't be realized.
As shown in Figure 5, test environment is at 12 meter per second wind speed, and the main shaft of horizontal axis noise reduction power-driven generator leaf is high apart from 10 meters on ground, from annular sampling test point to 10 meters zones of wind generator mounting points distance.This advantage is exactly not change original power stage, and size need not have any change, has directly reduced noise.
In a word, adopt horizontal axis noise reduction power-driven generator leaf of the present invention, can be suitable for any horizontal axis wind-driven generator, along with various countries more and more pay attention to environmental protection, small-sized wind power generator has been widely used in the environment such as family, communication base station, drill platform, beacon place, seashore, and the energy of cleaning is provided for environmental protection such as family, unit, governments.
The present invention mainly contains following advantage:
1. can reduce noise;
2. the error of Mold Making fan blade is little;
3. the flow-disturbing fan blade can guarantee that flow-disturbing ripple projection can evenly distribute;
To original traditional fan blade design and fan blade parameter without any change.
Description of drawings
Fig. 1 is the structural representation of traditional fan blade unconfined flow noise reduction convex design.
Fig. 2 is up and down two view of surveying after air-flow slips over fan blade of fan blade of the present invention.
Fig. 3 is up and down two view of surveying after air-flow slips over fan blade of fan blade of the present invention.
Fig. 4 is the structural representation of fan blade flow-disturbing noise reduction convex design of the present invention.
Description of reference numerals: 1-wind blade main body structure; 2-ripple noise reduction convex design.
Fig. 5 is the test method schematic representation of horizontal axis noise reduction power-driven generator leaf of the present invention.
Embodiment
Below in conjunction with Figure of description the invention is described in further detail.
Embodiment one
As shown in Figure 4, main purpose of the present invention is to provide a kind of horizontal axis noise reduction power-driven generator leaf, and this wind-driven generator is comprised of wind blade main body structure 1 and ripple noise reduction convex design 2.The ripple noise reduction convex design 2 of wind blade main body structure 1 quilt cover is that the ripple convex design by wide 1mm, high 1mm forms, and the optimal case of the ripple height of projection of ripple noise reduction convex design 2 of the present invention is between 0.5mm to 3mm.
Such as Fig. 2, Fig. 3 and shown in Figure 4, the ripple projection that fan blade of the present invention adopts can make wind-driven generator produce local flow-disturbing in rotary course, arrange along the fan blade sense of rotation to the outer camber line, form little shape eddy current after the air-flow process fan blade back side flow-disturbing convex design 2 that both sides slip over up and down, the rotation and go out because the windward side is constant, so Driving force and fan blade performance parameter are constant, therefore greatly reduce the friction that fan blade slips over up and down airflow collision, thereby reduced the wind-driven generator noise.
The fan blade of the ripple noise reduction convex design 2 that adopts such as Fig. 1 and Fig. 4 the present invention is compared the traditional fan blade that does not adopt ripple noise reduction convex design 2, noise reduction is very obvious, and to the design of original fan blade and fan blade parameter all without any change, but noise reduces more than 1 decibel at least, and this is the noise reduction that traditional fan blade can't be realized.
As shown in Figure 5, test environment is at 12 meter per second wind speed, and the main shaft of horizontal axis noise reduction power-driven generator leaf is high apart from 10 meters on ground, from annular sampling test point to 10 meters zones of wind generator mounting points distance.This advantage is exactly not change original power stage, and size need not have any change, has directly reduced noise.
Test data(data declaration: fan blade length is 0.6 meter, and 1.13 square metres of fan blade swept areas were based on IEC small-sized wind power generator testing standard in 2008):
The test data explanation:
1) the test wind impeller boss is high 10 meters;
2) the noise test probe is at 10 meters at the ground range pylon blower fan back side;
3) swept area: refer to that perpendicular on the wind vector plane blade tip motion generates the area of contour of justifying during the wind wheel rotation.
Claims (6)
1. horizontal axis noise reduction power-driven generator leaf, it is characterized in that: this wind-driven generator is comprised of wind blade main body structure (1) and ripple noise reduction convex design (2).
2. horizontal axis noise reduction power-driven generator leaf according to claim 1, it is characterized in that: the ripple height of projection of ripple noise reduction convex design (2) is between 0.5mm to 3mm.
3. horizontal axis noise reduction power-driven generator leaf according to claim 1 is characterized in that: ripple noise reduction convex design (2) is that the ripple convex design by wide 1mm, high 1mm forms.
4. horizontal axis noise reduction power-driven generator leaf according to claim 1, it is characterized in that: ripple noise reduction convex design (2) can make wind-driven generator produce local flow-disturbing in rotary course.
5. horizontal axis noise reduction power-driven generator leaf according to claim 1, it is characterized in that: ripple noise reduction convex design (2) is arranged along the fan blade sense of rotation to the outer camber line, the air-flow that slips over of both sides forms little shape eddy current after through fan blade back side flow-disturbing convex design (2) up and down, rotation and going out.
6. horizontal axis noise reduction power-driven generator leaf according to claim 1 is characterized in that: the back side ripple projection noise-reducing design of wind blade main body structure (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104934618A CN102966487A (en) | 2012-11-28 | 2012-11-28 | Noise-reduction fan blade for horizontal-shaft wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104934618A CN102966487A (en) | 2012-11-28 | 2012-11-28 | Noise-reduction fan blade for horizontal-shaft wind driven generator |
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| CN102966487A true CN102966487A (en) | 2013-03-13 |
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| CN2012104934618A Pending CN102966487A (en) | 2012-11-28 | 2012-11-28 | Noise-reduction fan blade for horizontal-shaft wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015066986A1 (en) * | 2013-11-07 | 2015-05-14 | 广州红鹰能源科技有限公司 | Horizontal-axis wind turbine |
Citations (10)
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|---|---|---|---|---|
| CN1110368A (en) * | 1993-11-04 | 1995-10-18 | 斯道克产品工程公司 | Wind turbine |
| CN1329696A (en) * | 1998-12-09 | 2002-01-02 | 阿洛伊斯·沃本 | Rotor blade of wind driven generator |
| US20040126541A1 (en) * | 2002-12-31 | 2004-07-01 | Dietz Timothy M. | Drag reduction article and method of use |
| CN1936320A (en) * | 2005-09-22 | 2007-03-28 | 歌美飒风电有限公司 | Wind turbine with noise-reducing blade rotor |
| CN201437756U (en) * | 2009-05-20 | 2010-04-14 | 宁波银风能源科技股份有限公司 | Noise reduction leaf blade of wind power generator |
| CN201461226U (en) * | 2009-08-05 | 2010-05-12 | 中国科学院工程热物理研究所 | Vane |
| CN102159457A (en) * | 2008-09-22 | 2011-08-17 | 瓦尔特·恩特哈玛 | Blade for turbomachine |
| US20120061522A1 (en) * | 2010-09-13 | 2012-03-15 | John Sullivan | Wavy airfoil |
| CN102562436A (en) * | 2010-12-16 | 2012-07-11 | 通用电气公司 | Noise reducer for rotor blade in wind turbine |
| CN102733859A (en) * | 2011-03-30 | 2012-10-17 | 通用电气公司 | Microstructures for reducing noise of fluid dynamic structure |
-
2012
- 2012-11-28 CN CN2012104934618A patent/CN102966487A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110368A (en) * | 1993-11-04 | 1995-10-18 | 斯道克产品工程公司 | Wind turbine |
| CN1329696A (en) * | 1998-12-09 | 2002-01-02 | 阿洛伊斯·沃本 | Rotor blade of wind driven generator |
| US20040126541A1 (en) * | 2002-12-31 | 2004-07-01 | Dietz Timothy M. | Drag reduction article and method of use |
| CN1936320A (en) * | 2005-09-22 | 2007-03-28 | 歌美飒风电有限公司 | Wind turbine with noise-reducing blade rotor |
| CN102159457A (en) * | 2008-09-22 | 2011-08-17 | 瓦尔特·恩特哈玛 | Blade for turbomachine |
| CN201437756U (en) * | 2009-05-20 | 2010-04-14 | 宁波银风能源科技股份有限公司 | Noise reduction leaf blade of wind power generator |
| CN201461226U (en) * | 2009-08-05 | 2010-05-12 | 中国科学院工程热物理研究所 | Vane |
| US20120061522A1 (en) * | 2010-09-13 | 2012-03-15 | John Sullivan | Wavy airfoil |
| CN102562436A (en) * | 2010-12-16 | 2012-07-11 | 通用电气公司 | Noise reducer for rotor blade in wind turbine |
| CN102733859A (en) * | 2011-03-30 | 2012-10-17 | 通用电气公司 | Microstructures for reducing noise of fluid dynamic structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015066986A1 (en) * | 2013-11-07 | 2015-05-14 | 广州红鹰能源科技有限公司 | Horizontal-axis wind turbine |
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Application publication date: 20130313 |