CN215408978U - Structure for improving lift force of wind driven generator blade - Google Patents
Structure for improving lift force of wind driven generator blade Download PDFInfo
- Publication number
- CN215408978U CN215408978U CN202120078032.9U CN202120078032U CN215408978U CN 215408978 U CN215408978 U CN 215408978U CN 202120078032 U CN202120078032 U CN 202120078032U CN 215408978 U CN215408978 U CN 215408978U
- Authority
- CN
- China
- Prior art keywords
- blade
- flap
- driven generator
- wind driven
- lift force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 claims abstract description 6
- 229920002877 acrylic styrene acrylonitrile Polymers 0.000 claims abstract description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
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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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- Wind Motors (AREA)
Abstract
The utility model discloses a structure for improving the lift force of a wind driven generator blade, which is used for improving the lift force of the root area of the wind driven generator blade. The structure for improving the lift force of the blade of the wind driven generator is a flap fixed on the surface of the blade, the cross section of the flap is L-shaped, the side lengths of two sides are both 10cm, and the thickness is 5 mm. The length direction of the flap is consistent with the length direction of the blade and is distributed in an area with 30% -90% of the relative thickness of the airfoil profile of the blade, and the vertical face of the flap is aligned with the trailing edge line of the pressure surface of the blade. The flaps are made of ASA plastic through pultrusion process, each flap is 1000mm long, and a plurality of flaps are spliced at the rear edge of the pressure surface of the blade, so that the lift force of the blade of the wind driven generator can be effectively increased.
Description
Technical Field
The utility model relates to the field of wind power, in particular to a wind power generator blade flap.
Background
The wind power generator can convert wind energy into mechanical energy, then convert the mechanical energy into electric energy and transmit the electric energy for a long distance, wherein the blade is the most main part for converting the wind energy, and the pneumatic performance of the blade directly influences the power generation efficiency of the wind power generator. The section shape of the blade is an airfoil shape, and when wind flows through the airfoil shape, lift force can be generated, so that the wind wheel is pushed to rotate, and mechanical energy is generated.
1, the airfoil profile is the basic shape of a wind driven generator blade, the relative thickness of the airfoil profile refers to the ratio of the thickness to the chord length, the smaller the relative thickness, the higher the aerodynamic efficiency is, but the structural safety is reduced. The airfoil at the root of the blade is relatively thick, and therefore less aerodynamically efficient, as is often required for structural safety. In addition, during the rotation process of the blade, the relative wind speed at the root of the blade is small due to the small rotation radius, and the generated lift force is small.
The 2 wing flap is firstly applied to the wing of the airplane, and when the takeoff and landing speeds of the airplane are reduced, the camber of the wing profile is changed through the wing flap, so that the lift force of the wing at low wind speed is improved. Flaps are typically used at lower wind speeds because they increase lift and also increase blade drag. When the wind speed is high, the resistance brought by the flap is greatly increased along with the increase of the lift force, the safety performance of the wing is seriously affected, and therefore the flap cannot be used.
3 during the rotation of the wind driven generator blade, because of the difference of the rotation radius, the wind speed of each position of the blade is different, and the relative wind speed is gradually increased from the root part of the blade to the tip part, so that a flap is required to be added in a proper area of the blade root to increase the aerodynamic efficiency of the fan blade.
Disclosure of Invention
The utility model aims to provide a structure for improving the lift force of a wind driven generator blade, so as to improve the lift force of the wind driven generator blade.
2 the structure for improving the lift force of the blade of the wind driven generator is a flap fixed on the surface of the blade, the length direction of the flap is consistent with the length direction of the blade, the flap is distributed in an area with the relative thickness of 30% -90% of the airfoil shape of the blade, and the vertical surface of the flap is aligned with the rear edge of the pressure surface of the blade;
3 the flaps are made of ASA plastic and are processed by a pultrusion process, the length of each flap is 1000mm, the flaps are spliced along the rear edge of the pressure surface of the blade to form the integral trailing edge flaps of the blade, and the distance between every two adjacent flaps is 2-5 mm.
And 4, the flap is bonded with the blade through methyl acrylate structural adhesive, and the thickness of the structural adhesive is 2-5 mm. In order to reduce the influence of the thickness of the flap on the airflow, the side of the flap that is bonded to the blade has an oblique angle of 1: 10.
After the wind driven generator blade is provided with the flap, the camber and the trailing edge thickness of the wing profile of the wind driven generator blade are changed, the lift performance of the root of the blade can be obviously improved, and the annual energy production of the fan can be increased by 1% -2%.
Drawings
All the above features will be better understood from the following description with reference to the accompanying drawings, in which:
FIG. 1 is a top view of the installation position of a wing flap of a wind turbine blade of the present invention, wherein 1 is a wind turbine blade, 2 is a wing flap, 11 is a leading edge of the blade, and 12 is a trailing edge of the blade;
FIG. 2 is a sectional view of the installation position of a wing flap of a wind turbine blade in the utility model, wherein 1 is the wind turbine blade, 2 is the wing flap, 13 is the suction surface of the blade, and 14 is the pressure surface of the blade;
FIG. 3 is an enlarged sectional view of the mounting position of the flap of the blade of the wind turbine in the present invention, wherein 21 is the flap bevel angle, and 3 is the methyl acrylate structural adhesive.
Detailed Description
14 for better understanding of the technical features and applications of the present invention, the present invention will be described with reference to the accompanying drawings.
15 as shown in fig. 2, the structure for improving the lift force of the blade of the wind driven generator mainly comprises a flap 2 fixed on the surface of the blade 1 of the wind driven generator, wherein the section of the flap 2 is in an L shape, the side lengths of two sides of the section of the flap 2 are both 10cm, and the thickness of the flap is 5 mm;
16 the wind power generator blade 1 has a cross section in the shape of an airfoil, comprising a leading edge 11, a trailing edge 12, a suction surface 13 and a pressure surface 14, wherein the relative thickness of the airfoil is the thickness between the suction surface 13 and the pressure surface 14 divided by the length between the leading edge 11 and the trailing edge 12. The vertical face of the flap 2 is aligned with the trailing edge 12 of the pressure surface 14 of the aerogenerator blade 1, and the flap 2 must not extend beyond the trailing edge 12.
17 as shown in fig. 3, the flap 2 is bonded with the blade 1 of the wind driven generator through methyl acrylate structural adhesive 3, the thickness of the structural adhesive 3 is 2-5 mm, and in order to reduce the influence of the thickness of the flap 3 on airflow, an oblique angle 21 of 1:10 is formed on the bonding side of the flap 3 and the blade.
18 the distribution area of the flap 2 in the length direction of the wind driven generator blade 1 is as follows: the relative thickness of the airfoil of the blade 1 is 30% -90% and the relative thickness is mainly located in the root area of the blade 1.
19 the flaps 2 are made of ASA plastic and are processed by a pultrusion process, and the length of each flap is 1000 mm. As shown in FIG. 1, a plurality of flaps 2 are arranged along the trailing edge 12 of the wind driven generator blade 1, and the distance between every two adjacent flaps 2 is 2-5 mm.
20 take a certain section 1.5MW aerogenerator blade as an example, the regional of 30% ~90% of its blade cross-section airfoil relative thickness is the position apart from blade root 3~13m, and the installation of flap includes location, clearance and installation three step:
21 the positioning step comprises: measuring the positions of 3m and 13m from the root of the blade by using a measuring tape, and marking the rear edge of the pressure surface of the blade to be used as the starting position and the ending position of the flap;
22 the cleaning step comprises: polishing the bonding area at the rear edge of the pressure surface by using sand paper to enable the bonding area to be smooth and clean, then wiping by using alcohol or acetone, and waiting for drying;
23 the mounting step comprises: using methyl acrylate structural adhesive to connect the flap belt 1: one side of the 10 bevel is bonded to the blade bonding area and the riser of the flap is aligned with the trailing edge of the pressure side of the blade. The bonding thickness that the gasket control structure glued is 2~5mm in the bonding process to use frock clamp to fix the wing flap, then wait to dismantle the frock after the structure glues the solidification.
Claims (4)
1. A structure for improving the lift force of a blade of a wind driven generator is characterized in that the structure is a flap fixed on the surface of the blade, the cross section of the flap is L-shaped, the side length of two sides of the flap is 10cm, and the thickness of the flap is 5 mm;
the length direction of the flap is consistent with the length direction of the blade and is distributed in an area with the relative thickness of 30% -90% of the airfoil profile of the blade, and the vertical face of the flap is aligned with the rear edge of the pressure surface of the blade.
2. The structure for improving the lift of the blade of the wind driven generator as claimed in claim 1, wherein the material of the flaps is ASA plastic and is processed by a pultrusion process, and the length of each flap is 1000 mm.
3. The structure for improving the lift force of the blade of the wind driven generator as claimed in claim 1, wherein the flap is bonded to the blade by a methyl acrylate structural adhesive, and the thickness of the structural adhesive is 2-5 mm.
4. The structure for improving the lift of the blade of the wind driven generator as claimed in claim 1, wherein the L-shaped flap has an oblique angle of 1:10 with the side to which the blade is bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120078032.9U CN215408978U (en) | 2021-01-13 | 2021-01-13 | Structure for improving lift force of wind driven generator blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120078032.9U CN215408978U (en) | 2021-01-13 | 2021-01-13 | Structure for improving lift force of wind driven generator blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215408978U true CN215408978U (en) | 2022-01-04 |
Family
ID=79661687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120078032.9U Expired - Fee Related CN215408978U (en) | 2021-01-13 | 2021-01-13 | Structure for improving lift force of wind driven generator blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215408978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199454A (en) * | 2022-08-01 | 2022-10-18 | 中国海洋大学 | Power generation blade with gurney flap and tidal current energy water turbine |
-
2021
- 2021-01-13 CN CN202120078032.9U patent/CN215408978U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199454A (en) * | 2022-08-01 | 2022-10-18 | 中国海洋大学 | Power generation blade with gurney flap and tidal current energy water turbine |
| CN115199454B (en) * | 2022-08-01 | 2024-05-03 | 中国海洋大学 | Power generation blade with gurney flap and tidal current energy water turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |