CN104314770A - Wind turbine blade with trailing edge flat plate - Google Patents
Wind turbine blade with trailing edge flat plate Download PDFInfo
- Publication number
- CN104314770A CN104314770A CN201410501091.7A CN201410501091A CN104314770A CN 104314770 A CN104314770 A CN 104314770A CN 201410501091 A CN201410501091 A CN 201410501091A CN 104314770 A CN104314770 A CN 104314770A
- Authority
- CN
- China
- Prior art keywords
- edge plate
- blade
- tailing edge
- trailing edge
- plate structure
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
Landscapes
- Wind Motors (AREA)
Abstract
The invention discloses a wind turbine blade with a trailing edge flat plate structure. The wind turbine blade comprises a blade body and is characterized in that the trailing edge flat plate is arranged on the trailing edge of the blade body and is arranged adjacent to the trailing edge of the blade body. Compared with the like blade without the trailing edge flat plate structure, the wind turbine blade disclosed by the invention has the advantage that the wind catching capability is improved by 3-5 percent; the trailing edge flat plate structure can be added at the initial stage of the blade design or can be added when the blade which is mounted on the turbine is reformed; the wind turbine blade is simple and convenient for processing.
Description
Technical field
The present invention relates to wind power equipment, specifically a kind of pneumatic equipment blades made of band tailing edge plate structure of exerting oneself for increasing Wind turbines under low wind speed.
Background technique
?putting into operation fast of the early 21st century wind energy turbine set, in recent years, technical problem highlights day by day, and whether wind energy conversion system power reaches design power is the emphasis paid close attention to always.Along with the exploitation of more than 5MW unit and plateau type unit, the total development trend of blade is that length constantly increases, but length of blade increase after flexibility increase there will be new problem, the such as distance etc. of gas bullet, flutter and blade tip and tower cylinder.In addition, the increase of length of blade also can bring the increase of complete machine manufacture cost.The wind energy power of catching how increasing blade is unlikely to again to make length of blade increase too large, becomes the problem that current blade design is paid close attention to.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, providing a kind of pneumatic equipment blades made with tailing edge plate structure.The blade of this band tailing edge plate structure, it catches wind energy power increases by 3% ~ 5%.Tailing edge plate structure can be added at the blade design initial stage, adds when also can transform the blade of having installed.Select suitable tailing edge plate can increase the aerodynamic characteristic of aerofoil profile to a certain extent, and then increase the performance of blade, the final generated energy increasing unit.
Realizing technological scheme of the present invention is: a kind of pneumatic equipment blades made with tailing edge plate structure, comprises blade, and the trailing edge of described blade is provided with tailing edge plate.
Described tailing edge plate is close to trailing edge and is installed.
Trailing edge is close in described tailing edge plate side, and its opposite side exceeds blade windward side.
Described tailing edge plate changes with trailing edge curvilinear motion, and is 0 ° ~ 90 ° with the angle of each cross section aerofoil profile string.
Described tailing edge plate is divided into multistage, smooth transition between each section of tailing edge plate.
Described tailing edge plate is the curved surface with trailing edge change.
60% ~ 90% leaf exhibition position that described tailing edge plate structure is positioned at blade is put.
Described tailing edge plate width is 1% ~ 5% times of cross section aerofoil profile chord length.
The invention has the beneficial effects as follows:
1, the blade of this band tailing edge plate structure, compared with the same blade not with tailing edge plate structure, it catches wind energy power increases by 3% ~ 5%.
2, tailing edge plate structure can be added at the blade design initial stage, adds, process simple and convenient when also can transform the blade of having installed.
Accompanying drawing explanation
Fig. 1 is the three-dimensional schematic front view of the present invention;
Fig. 2 is Fig. 1 right elevation;
Fig. 3 is the A-A sectional view of Fig. 1.
Number in the figure: 1-blade, 2-tailing edge plate, 3-blade 60% leaf exhibition position is put, 4-blade 90% leaf exhibition position is put, 5-blade profile aerofoil profile string, 6-blade inlet edge, 7-trailing edge, 8-blade windward side, the angle of α-tailing edge plate and blade profile aerofoil profile string.
Embodiment
Embodiment 1: as shown in Figure 1 to Figure 3, and a kind of pneumatic equipment blades made with tailing edge plate structure, comprises blade 1, and the trailing edge of described blade 1 is provided with tailing edge plate 2, and this tailing edge plate 2 is close to trailing edge 7 and is installed.Trailing edge 7 is close in described tailing edge plate 2 side, and its opposite side exceeds blade windward side 8.Blade profile aerofoil profile string 5 is in front of the blade between edge 6 and trailing edge 7; The curved surface of described tailing edge plate 2 for changing with trailing edge 7 curvilinear motion, and the angle α of tailing edge plate and each blade profile aerofoil profile string 5 is 0 ° ~ 90 °.Described tailing edge plate 2 is divided into multistage, smooth transition between each section of tailing edge plate 2.Between the 60% leaf exhibition position that described tailing edge plate structure is positioned at blade is put and to be put to 90% leaf exhibition position.Described tailing edge plate width is 5% times of blade profile aerofoil profile chord length.
For the wind energy conversion system that speed-changing oar-changing controls, the increase runnability along with wind speed is generally divided into 4 kinds of states: minimum speed state, optimal operational condition, suboptimum running state and rated power state.At the constant oar of rated wind speed front vane, power coefficient is maximum, and wind wheel can realize maximal wind-energy capture; When wind speed is higher than rated wind speed, by vane propeller-changing power-limiting.
Traditional blade of wind-driven generator is variable cross section twisted blade, aerodynamic configuration determines the performance of blade, and after blade forming, efficiency also just determines, because blade design needs to consider pneumatic and factor that is structure, pneumatic equipment blades made power coefficient general is at present about 0.49.Want to improve exerting oneself of blade, high lift device is added to blade body and realizes being a good method.
The manufacture and installation of tailing edge plate device: adopt glass fiber reinforced epoxy resin to make, hand pasting forming.Consider the complexity of processing, suitably can revise the height of curved surface, also can segmentation manufacture.Adopt the bonding mode of laying to be bonded in blade trailing edge place, between each section of tailing edge plate 2, want smooth transition.Make tailing edge plate 2 vertical with each blade profile aerofoil profile string 5 time bonding as far as possible, if be not smooth transition with front and back section tailing edge plate 2, can suitably adjust bonding angle.
Embodiment 2: be with embodiment 1 difference, and described tailing edge plate width is 1% times of blade profile aerofoil profile chord length; Remaining part is identical with embodiment 1.
Embodiment 3: be with embodiment 1 difference, and described tailing edge plate width is 2% times of blade profile aerofoil profile chord length; Remaining part is identical with embodiment 1.
Claims (8)
1. the pneumatic equipment blades made with tailing edge plate structure, comprises blade, it is characterized in that: the trailing edge of described blade is provided with tailing edge plate.
2. be with the pneumatic equipment blades made of tailing edge plate structure according to claim 1, it is characterized in that: described tailing edge plate is close to trailing edge and is installed.
3. the pneumatic equipment blades made with tailing edge plate structure according to claim 1 or 2, is characterized in that: trailing edge is close in described tailing edge plate side, and its opposite side exceeds blade windward side.
4. be with the pneumatic equipment blades made of tailing edge plate structure according to claim 1, it is characterized in that: described tailing edge plate changes with trailing edge curvilinear motion, and is 0 ° ~ 90 ° with the angle of each cross section aerofoil profile string.
5. be with the pneumatic equipment blades made of tailing edge plate structure according to claim 1, it is characterized in that: described tailing edge plate is divided into multistage, smooth transition between each section of tailing edge plate.
6. the pneumatic equipment blades made with tailing edge plate structure according to claim 1,2,4 or 5, is characterized in that: described tailing edge plate is the curved surface with trailing edge change.
7. be with the pneumatic equipment blades made of tailing edge plate structure according to claim 1, it is characterized in that: 60% ~ 90% leaf exhibition position that described tailing edge plate structure is positioned at blade is put.
8. the pneumatic equipment blades made with tailing edge plate structure according to claim 1 or 2, is characterized in that: described tailing edge plate width is 1% ~ 5% times of cross section aerofoil profile chord length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501091.7A CN104314770A (en) | 2014-09-26 | 2014-09-26 | Wind turbine blade with trailing edge flat plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501091.7A CN104314770A (en) | 2014-09-26 | 2014-09-26 | Wind turbine blade with trailing edge flat plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104314770A true CN104314770A (en) | 2015-01-28 |
Family
ID=52370061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410501091.7A Pending CN104314770A (en) | 2014-09-26 | 2014-09-26 | Wind turbine blade with trailing edge flat plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104314770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545584A (en) * | 2016-03-16 | 2016-05-04 | 华北电力大学 | Wind turbine blade and determination method for dip angle of outflow tangent line of windward side |
| CN105545583A (en) * | 2016-03-16 | 2016-05-04 | 华北电力大学 | Wind turbine blade and determination method for dip angle of outflow tangent line of leeside |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459878A (en) * | 2009-05-18 | 2012-05-16 | Lm玻璃纤维制品有限公司 | Wind turbine blade with base part having inherent non-ideal twist |
| US20120141269A1 (en) * | 2011-09-09 | 2012-06-07 | General Electric Company | Extension for rotor blade in wind turbine |
| CN102691615A (en) * | 2011-03-22 | 2012-09-26 | 通用电气公司 | Lift device for rotor blade in wind turbine |
-
2014
- 2014-09-26 CN CN201410501091.7A patent/CN104314770A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459878A (en) * | 2009-05-18 | 2012-05-16 | Lm玻璃纤维制品有限公司 | Wind turbine blade with base part having inherent non-ideal twist |
| CN102691615A (en) * | 2011-03-22 | 2012-09-26 | 通用电气公司 | Lift device for rotor blade in wind turbine |
| US20120141269A1 (en) * | 2011-09-09 | 2012-06-07 | General Electric Company | Extension for rotor blade in wind turbine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545584A (en) * | 2016-03-16 | 2016-05-04 | 华北电力大学 | Wind turbine blade and determination method for dip angle of outflow tangent line of windward side |
| CN105545583A (en) * | 2016-03-16 | 2016-05-04 | 华北电力大学 | Wind turbine blade and determination method for dip angle of outflow tangent line of leeside |
| CN105545583B (en) * | 2016-03-16 | 2018-03-20 | 华北电力大学 | Wind power generation blade and lee face go out to flow the determination method at tangent line inclination angle |
| CN105545584B (en) * | 2016-03-16 | 2018-03-20 | 华北电力大学 | Wind power generation blade and windward side go out to flow the determination method at tangent line inclination angle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160420 Address after: 618000 Sichuan Province, Deyang city Huashan road two No. 2 Applicant after: DONGFANG ELECTRIC WIND POWER CO., LTD. Address before: 618000 Jiangxi hi tech Industrial Park, Sichuan, Jinsha Road, No. 666, No. Applicant before: Dongfang Turbine Co., Ltd., Dongfang Electric Group |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |