CN103470445A - Device for increasing rigidity of blades of wind turbine generator - Google Patents
Device for increasing rigidity of blades of wind turbine generator Download PDFInfo
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- CN103470445A CN103470445A CN201310466571XA CN201310466571A CN103470445A CN 103470445 A CN103470445 A CN 103470445A CN 201310466571X A CN201310466571X A CN 201310466571XA CN 201310466571 A CN201310466571 A CN 201310466571A CN 103470445 A CN103470445 A CN 103470445A
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- blade
- blades
- rigidity
- generation unit
- strut
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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
Abstract
The invention discloses a device for increasing the rigidity of blades of a wind turbine generator. The wind turbine generator comprises a tower, a hub and the blades. The hub is arranged on the tower. The blades are arranged on the hub. The wind turbine generator further comprises supporting rods and stay cables. One ends of the supporting rods are fixed on the blades. The other ends of the supporting rods are connected with one ends of the stay cables, and the other ends of the stay cables are fixed on the blades. The joints of the stay cables and the blades are the roots of the blades. According to the device for increasing the rigidity of the blades of the wind turbine generator, the stay cables and the supporting rods are additionally arranged on the blades, when bearing air loads of wind flow, the blades bear the reversed tension effect of the stay cables, therefore, the rigidity of the blades can be effectively increased, the flexibility of the blades is reduced, and the blades are prevented from being collided with the tower. Therefore, the dip angle and the taper angle of the blades do not need to be increased, generating capacity is increased, or/and a method for increasing blade materials is eliminated, the weight of the blades can be reduced, and cost is lowered.
Description
Technical field
The present invention relates to a kind of wind power generation unit blade rigidity and improve device.
Background technique
Raising along with China's wind technology, the wind-powered electricity generation unit is arranged on low wind speed district and becomes and become a reality, for catching the wind energy in more low wind speed district, the impeller of wind-powered electricity generation unit (wheel hub and blade, blades installation is on wheel hub) height of diameter and pylon becomes very large, so the rigidity of blade can diminish.In wind-powered electricity generation unit power generation process, blade is subject to very large pneumatic thrust load, cause blade to swing along the direction of air-flow, for preventing that blade tip from bumping against on pylon, usually adopt the inclination angle that increases blade, the method for cone angle, make blade tip away from pylon, but reduced effective wind sweeping area of blade, thereby reduced the power generation performance of unit.Also can adopt the method that increases blade material, improve the rigidity of blade, cause the mass penalty of blade, also increase gravity and the inertial load of unit simultaneously.
Therefore, need a kind of new wind power generation unit blade rigidity raising method to address the above problem.
Summary of the invention
The present invention is directed to the defect of prior art apoplexy group of motors blade stiffness deficiency, provide a kind of wind power generation unit blade rigidity to improve device.
For solving the problems of the technologies described above, the technological scheme that wind power generation unit blade rigidity raising device of the present invention adopts is:
A kind of wind power generation unit blade rigidity improves device, described wind-powered electricity generation unit comprises pylon, wheel hub and blade, described wheel hub is arranged on described pylon, described blade is arranged on described wheel hub, it is characterized in that: also comprise strut and oblique pull lock, one end of described strut is fixed on described blade, the other end of described strut connects an end of described oblique pull lock, the other end of described oblique pull lock is fixed on described blade, the root that the joint of one of them described oblique pull lock and described blade is described blade.
The quantity of the described oblique pull lock further, be connected with each described strut is 3.
Further, the blade tip that the joint of another described oblique pull lock and described blade is described blade.It is better that blade stiffness promotes effect.
Further, the middle part that the joint of described strut and described blade is described blade.It is better that blade stiffness promotes effect.
Further, the length of described strut is 15-20cm.Support effect is better.
Beneficial effect: wind power generation unit blade rigidity of the present invention improves device and increase suspension cable and strut on blade, when blade is subject to the aerodynamic loading of incoming flow wind, blade is subject to the reversal interlocking relay effect of suspension cable, can effectively improve the rigidity of blade, thereby reduced the amount of deflection of blade, prevented from bumping against on pylon.Do not need to increase like this inclination angle, the cone angle of blade, thereby improve generated energy, or/and increase the method for blade material, can reduce the weight of blade, reduce costs.
The accompanying drawing explanation
Fig. 1 is the structural representation that wind power generation unit blade rigidity improves device.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiments only is not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, wind power generation unit blade rigidity of the present invention improves device, and the wind-powered electricity generation unit comprises pylon 5, wheel hub 2 and blade 1, and wheel hub 2 is arranged on pylon 5, and blade 1 is arranged on wheel hub 2.Blade stiffness improves device and comprises strut 3 and oblique pull lock 4, and an end of strut 3 is fixed on blade 1, and the other end of strut 3 connects an end of oblique pull lock 4.The quantity of the oblique pull lock 4 preferably, be connected with each strut 3 is 3.The other end of oblique pull lock 4 is fixed on blade 1.The root that the joint of one of them oblique pull lock 4 and blade 1 is blade 1.The blade tip that the joint of another oblique pull lock 4 and blade 1 is blade 1.Preferably, the middle part that the joint of strut 3 and blade 1 is blade 1.It is better that blade stiffness promotes effect.Preferably, the length of strut 3 is 15-20cm.Support effect is better.
Inventive principle: an end of one of them suspension cable is fixed on blade tip and/or other place, and an end of another oblique pull lock is fixed on root of blade and/or other place.Suspension cable and strut all, on blade, therefore, do not affect the change oar of blade, and when wind speed surpasses the rated wind speed of wind-powered electricity generation unit, blade rotates around its axle, reduces catching of wind energy, reduces the pneumatic thrust of unit.
Wind power generation unit blade rigidity of the present invention improves device and increase suspension cable and strut on blade, when blade is subject to the aerodynamic loading of incoming flow wind, blade is subject to the reversal interlocking relay effect of suspension cable, can effectively improve the rigidity of blade, thereby reduced the amount of deflection of blade, prevented from bumping against on pylon.Do not need to increase like this inclination angle, the cone angle of blade, thereby improve generated energy, or/and increase the method for blade material, can reduce the weight of blade, reduce costs.
Claims (5)
1. a wind power generation unit blade rigidity improves device, described wind-powered electricity generation unit comprises pylon (5), wheel hub (2) and blade (1), described wheel hub (2) is arranged on described pylon (5), described blade (1) is arranged on described wheel hub (2), it is characterized in that: also comprise strut (3) and oblique pull lock (4), one end of described strut (3) is fixed on described blade (1), the other end of described strut (3) connects an end of described oblique pull lock (4), the other end of described oblique pull lock (4) is fixed on described blade (1), the root that the joint of one of them described oblique pull lock (4) and described blade (1) is described blade (1).
2. wind power generation unit blade rigidity as claimed in claim 1 improves device, it is characterized in that: the quantity of the described oblique pull lock (4) be connected with each described strut (3) is 3 or 5.
3. wind power generation unit blade rigidity as claimed in claim 2 improves device, it is characterized in that: the blade tip that the joint of another described oblique pull lock (4) and described blade (1) is described blade (1).
4. wind power generation unit blade rigidity as claimed in claim 2 improves device, it is characterized in that: the middle part that the joint of described strut (3) and described blade (1) is described blade (1).
5. wind power generation unit blade rigidity as claimed in claim 2 improves device, and it is characterized in that: the length of described strut (3) is 15-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310466571XA CN103470445A (en) | 2013-10-09 | 2013-10-09 | Device for increasing rigidity of blades of wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310466571XA CN103470445A (en) | 2013-10-09 | 2013-10-09 | Device for increasing rigidity of blades of wind turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103470445A true CN103470445A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310466571XA Pending CN103470445A (en) | 2013-10-09 | 2013-10-09 | Device for increasing rigidity of blades of wind turbine generator |
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| CN (1) | CN103470445A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612896A (en) * | 2014-12-12 | 2015-05-13 | 西北工业大学 | Offshore wind power generation typhoon-resistance control system |
| CN105298741A (en) * | 2015-11-03 | 2016-02-03 | 周方 | Reinforced blade for wind driven generator |
| CN105298740A (en) * | 2015-11-03 | 2016-02-03 | 周方 | Rotor strengthening device of wind driven generator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19606359A1 (en) * | 1996-02-12 | 1997-08-14 | Helmut Maas | Rotor holder-support for wind power generator |
| CN101418774A (en) * | 2007-10-22 | 2009-04-29 | 黄金伦 | Method for lightening prior three-blade wind wheel |
| CN101652565A (en) * | 2007-03-14 | 2010-02-17 | 维达尔·霍尔莫伊 | Wind turbine rotor |
| CN102434384A (en) * | 2011-11-11 | 2012-05-02 | 张向增 | Novel composite material blade of horizontal shaft wind generating set |
| CN203499914U (en) * | 2013-10-09 | 2014-03-26 | 南京风电科技有限公司 | Wind turbine generator vane rigidity improving device |
-
2013
- 2013-10-09 CN CN201310466571XA patent/CN103470445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19606359A1 (en) * | 1996-02-12 | 1997-08-14 | Helmut Maas | Rotor holder-support for wind power generator |
| CN101652565A (en) * | 2007-03-14 | 2010-02-17 | 维达尔·霍尔莫伊 | Wind turbine rotor |
| CN101418774A (en) * | 2007-10-22 | 2009-04-29 | 黄金伦 | Method for lightening prior three-blade wind wheel |
| CN102434384A (en) * | 2011-11-11 | 2012-05-02 | 张向增 | Novel composite material blade of horizontal shaft wind generating set |
| CN203499914U (en) * | 2013-10-09 | 2014-03-26 | 南京风电科技有限公司 | Wind turbine generator vane rigidity improving device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612896A (en) * | 2014-12-12 | 2015-05-13 | 西北工业大学 | Offshore wind power generation typhoon-resistance control system |
| CN105298741A (en) * | 2015-11-03 | 2016-02-03 | 周方 | Reinforced blade for wind driven generator |
| CN105298740A (en) * | 2015-11-03 | 2016-02-03 | 周方 | Rotor strengthening device of wind driven generator |
| CN105298740B (en) * | 2015-11-03 | 2018-11-06 | 周方 | The rotor stiffening device of wind-driven generator |
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Application publication date: 20131225 |