CN202789316U - Large-scale wind turbine generator system vane - Google Patents
Large-scale wind turbine generator system vane Download PDFInfo
- Publication number
- CN202789316U CN202789316U CN2012203144222U CN201220314422U CN202789316U CN 202789316 U CN202789316 U CN 202789316U CN 2012203144222 U CN2012203144222 U CN 2012203144222U CN 201220314422 U CN201220314422 U CN 201220314422U CN 202789316 U CN202789316 U CN 202789316U
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- blade
- vane
- scale wind
- wind turbines
- folding
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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 utility model discloses a large-scale wind turbine generator system vane which is foldable at the length direction of the vane. The large-scale wind turbine generator system vane is applicable to an anti-typhoon work condition. Due to adoption of a foldable vane structure design, acting force arm of vane stress can be greatly reduced by folding the vane at the length direction. Meanwhile the direction of lift force and the direction of resistance which are received by the top segment of the vane are reverse after the vane is folded so that a part of stress of the top segment of the vane and a part of stress of the bottom segment of the vane are canceled out with each other and load of a vane root and a system is reduced. Therefore system ultimate bearing capacity and vane structural strength are not sharply increased due to a typhoon work condition, only local processing towards a folded portion is required so that cost is effectively controlled under the condition of guaranteeing safety. The large-scale wind turbine generator system vane can be widely applied to large-scale horizontal shaft wind turbine generator systems.
Description
Technical field
The utility model relates to a kind of Large-scale Wind Turbines blade.
Background technique
Wind-power electricity generation has obtained develop rapidly, especially in China in recent years as one of the most ripe renewable energy power generation mode of present technology.By the end of the year 2010, China has become the country of world's installed capacity of wind-driven power maximum.The wind-resources of China distributes and is inhomogeneous, be distributed in three northern areas of China in the land resource set, from power load center, east away from, wind-resources mainly is distributed in southeastern coast in the zone preferably near the power load center, east, but because this zone faces the threat of typhoon, cause Wind Power Generation comparatively slow.Present wind generating technology originates from Europe, the relevant design standard a nd norm also substantially with European wind regime as standard, and there is not the typhoon problem in Europe, therefore present wind power generating set is not all considered Anti-Typhoon problem basically.But the superelevation wind speed (more than the 70m/s) when in fact typhoon arrives and fast-changing wind direction cause serious threat all can for the safety of wind-powered electricity generation unit.Attacked the Cangnan County, Zhejiang Province wind energy turbine set such as typhoon Sang Mei front in 2006, the highest wind-force had reached 19 grades at that time.Cause wind energy turbine set 28 typhoon power generator groups in Cangnan to fall 20, other 8 also impaired in various degree, and whole wind field is almost scrapped.Therefore, how to carry out Anti-Typhoon wind power generating set design and caused increasing wind-powered electricity generation unit artificer's attention.
Large-scale Wind Turbines is the horizontal axis design at present, and namely the wind wheel plane of rotation is perpendicular to the incoming flow wind direction.And used wind energy acquisition equipment, i.e. blade, utilization be that air flow stream is crossed the principle that blade produces lift and resistance and driven the wind wheel rotation, thereby with wind energy transformation be the mechanical energy of impeller.According to the aerofoil profile principle, lift is directly proportional with the quadratic power of wind speed with the size of resistance, and the suffered torque load of root of blade equals lift and resistance along the integration of length of blade direction.The blade of Large-scale Wind Turbines is very long, the wind generator set blade length of single-machine capacity 3MW is 49 to 60 meters at present, and the wind generator set blade length of single-machine capacity 6MW will reach 75 to 80 meters, when typhoon, high wind speed will cause the suffered load of unit to compare non-typhoon operating mode with turbulivity improving a lot.Address the above problem, the simplest method is to improve the design limit of unit, the ultimate bearing strength of reinforced blade and each structure.Can cause the unit cost significantly to increase but do like this, improve the degree electricity cost of unit generation, be not desirable plan.
The model utility content
The purpose of this utility model is to provide a kind of Large-scale Wind Turbines blade, and the limit load of blower fan in the time of can reducing the typhoon operating mode is safe and reliable, cost is low.
To achieve these goals, the utility model adopts following technological scheme:
A kind of Large-scale Wind Turbines blade is the foldable type blade on the length of blade direction.
Further, the folding position of described blade is arranged on apart from blade tip 15% to 50% length of blade place.
Further, described foldable type blade comprises section at the bottom of the blade, blade top section, comprises the fold mechanism of foldable shaft; Section and blade top section connects by foldable shaft at the bottom of the described blade, and blade top section can be rotated around foldable shaft.
Further, described fold mechanism also comprises: the folding driving device that drive vane top section is rotated around foldable shaft in folding process; The locking device that keeps the blade current state when being used for the fully folding or full open position of blade; Its signal is used for the folding position state sensor of identification blade current state and jackknife action control.
Further, described folding driving device is motor drive unit or fluid pressure drive device.
Further, described locking device is mechanical locking, hydraulic lock assembly or electromagnetic locking device.
Further, described Large-scale Wind Turbines is the horizontal axis wind-driven generator group.
The utility model is owing to take above technological scheme, and it has the following advantages:
1, the utility model is owing to adopt the collapsible blade structural design, by in the longitudinal direction folding of blade, can greatly reduce the acting force arm of vane stress.Simultaneously, can make the direction of the suffered lift of blade top section and resistance reverse behind the leaf folding, thereby make blade top section and the stressed of end section have part to cancel out each other, reduce the load of root of blade and unit; Therefore, unit ultimate bearing capacity and blade structure intensity needn't significantly increase because of the typhoon operating mode, only need fold section is done local the processing, and in the situation that guarantees safety, cost can be effectively controlled.
2, Large-scale Wind Turbines blade of the present utility model also can be used for non-typhoon operating mode, as for length at the large-scale blade more than 60 meters, also can adopt folded state in the transportation process, reduce the requirement to traffic condition, thereby greatly save cost of transportation.
3, the utility model can be widely used in the large-scale horizontal axis wind-driven generator group.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation (full open position) of Large-scale Wind Turbines blade of the present utility model;
Fig. 2 is the structural representation (partially folded state A) of Large-scale Wind Turbines blade of the present utility model;
Fig. 3 is the structural representation (partially folded state B) of Large-scale Wind Turbines blade of the present utility model;
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in restriction the utility model.
As shown in Figure 1, 2, 3, Large-scale Wind Turbines blade of the present utility model is the foldable type blade on the length of blade direction.By normal flow design intact leaf aerodynamic configuration.The folding position can be arranged on according to actual needs apart from blade tip 15% to 50% length of blade place.The foldable type blade comprises section at the bottom of the blade, blade top section, comprises the fold mechanism of foldable shaft; Section and blade top section connects by foldable shaft at the bottom of the blade, and blade top section can be rotated around foldable shaft.Fold mechanism also comprises folding driving device, locking device and folding position state sensor.Wherein, folding driving device drive vane top section is rotated around foldable shaft in folding process, can be motor drive unit, also can be fluid pressure drive device; Locking device keeps the current state of blade when being used for the fully folding or full open position of blade, can be mechanical locking, hydraulic lock assembly or electromagnetic locking device; Folding position state sensor signal is used for the current state of identification blade and the control of jackknife action.
Large-scale Wind Turbines of the present utility model is the horizontal axis wind-driven generator group.
When non-typhoon operating mode, blade keeps full open position.At this moment blade profile is as good as with general integral design blade, and section suffered wind in blade top carries by locking device and passes to section at the bottom of the blade.The design of locking device will guarantee that blade between the section relative movement is not occuring at the bottom of this state lower blade top section and the blade.Before the typhoon, locking device unlocks, and folding driving device drive vane top section is rotated around foldable shaft, until blade reaches complete folded state, and the locking device locking, and guarantee that blade blade when typhoon is in complete folded state always.After typhoon left, locking device unlocked, and folding driving device drive vane top section is rotated around foldable shaft, makes blade recover full open position, and locking device locks again, and blower fan enters non-typhoon operating mode operation again.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a Large-scale Wind Turbines blade is characterized in that, is the foldable type blade on the length of blade direction.
2. Large-scale Wind Turbines blade according to claim 1 is characterized in that, the folding position of described blade is arranged on apart from blade tip 15% to 50% length of blade place.
3. Large-scale Wind Turbines blade according to claim 1 is characterized in that, described foldable type blade comprises section at the bottom of the blade, blade top section, comprises the fold mechanism of foldable shaft; Section and blade top section connects by foldable shaft at the bottom of the described blade, and blade top section can be rotated around foldable shaft.
4. Large-scale Wind Turbines blade according to claim 3 is characterized in that, described fold mechanism also comprises:
The folding driving device that drive vane top section is rotated around foldable shaft in folding process;
The locking device that keeps the blade current state when being used for the fully folding or full open position of blade;
Its signal is used for the folding position state sensor of identification blade current state and jackknife action control.
5. Large-scale Wind Turbines blade according to claim 4 is characterized in that, described folding driving device is motor drive unit or fluid pressure drive device.
6. Large-scale Wind Turbines blade according to claim 4 is characterized in that, described locking device is mechanical locking, hydraulic lock assembly or electromagnetic locking device.
7. want each described Large-scale Wind Turbines blade of 1-6 according to right, it is characterized in that described Large-scale Wind Turbines is the horizontal axis wind-driven generator group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203144222U CN202789316U (en) | 2012-06-29 | 2012-06-29 | Large-scale wind turbine generator system vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203144222U CN202789316U (en) | 2012-06-29 | 2012-06-29 | Large-scale wind turbine generator system vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789316U true CN202789316U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203144222U Expired - Lifetime CN202789316U (en) | 2012-06-29 | 2012-06-29 | Large-scale wind turbine generator system vane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720632A (en) * | 2012-06-29 | 2012-10-10 | 国电联合动力技术有限公司 | Large wind generating set blade and application thereof |
-
2012
- 2012-06-29 CN CN2012203144222U patent/CN202789316U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720632A (en) * | 2012-06-29 | 2012-10-10 | 国电联合动力技术有限公司 | Large wind generating set blade and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NATIONAL ELECTRIC NEW ENERGY TECHNOLOGY INSTITUTE Effective date: 20130705 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130705 Address after: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee after: GUODIAN UNITED POWER TECHNOLOGY Co.,Ltd. Patentee after: GUODIAN NEW ENERGY TECHNOLOGY INSTITUTE Address before: 100000 Beijing City, Zhongguancun, South Street, building B, building No., level 56, level 16 Patentee before: GUODIAN UNITED POWER TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |