CN102086841B - Wind wheel cable-stayed structure of wind driven generator with vertical shaft - Google Patents
Wind wheel cable-stayed structure of wind driven generator with vertical shaft Download PDFInfo
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- CN102086841B CN102086841B CN2011100485085A CN201110048508A CN102086841B CN 102086841 B CN102086841 B CN 102086841B CN 2011100485085 A CN2011100485085 A CN 2011100485085A CN 201110048508 A CN201110048508 A CN 201110048508A CN 102086841 B CN102086841 B CN 102086841B
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- 239000000725 suspension Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000007665 sagging Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a wind wheel cable-stayed structure of a wind driven generator with a vertical shaft. The wind wheel cable-stayed structure comprises a stay cable and a cable-stayed bearing; the cable-stayed bearing is sleeved and fixed on a part positioned above an external rotor of the generator on a tower column; and one end of the stay cable is connected with the cable-stayed bearing, and the other end of the stay cable is connected with a blade or a supporting rod which is connected with the blade. By utilizing the wind wheel cable-stayed structure, the restriction of the power transmission path that the weights of the wind wheels are transmitted to the tower column through the generator for the traditional wind wheel support structure is broken through, and the weights of the wind wheels are directly transmitted on the tower column. The reasonable and effective support of the large wind wheels is convenient to realize, the design and manufacturing cost of the large wind wheel support structure can be lowered, the frictional resistance can be reduced, the power generation efficiency can be improved, the fatigue stress can be reduced, the service life of the wind driven generator can be prolonged, and the quiet running property of the wind wheels can be increased, and the vibration of the wind wheels can be reduced.
Description
Technical field
The present invention relates to a kind of supporting structure of vertical axis wind turbine weight, especially a kind of with the wind wheel slant-pull structure of the direct oblique pull of wind wheel weight to king-post.
Background technique
Vertical axis aerogenerator comprises king-post, wind wheel and generator, and wind wheel comprises strut and blade, and strut one end is connected with described king-post, and the other end is connected with blade, between described strut and king-post, generator is set.The normal conditions lower support bar is overhang, and leaf weight acts on the overhang end, when wind wheel rotates, following problems easily occur:
(1) due to medium-sized or above wind-driven generator in order to reach target power, the general larger wind wheel of build that uses, because of blade and the strut own wt excessive, strut 02 easily produces amount of deflection when wind wheel rotates and the sagging strut 02 ' blade 01 that becomes also deflects into blade 01 ', as shown in Figure 1.These variations can cause wind wheel aerodynamic configuration and characteristic thereof to change, and reduce the wind power efficiency of wind wheel.The solution that those skilled in the art propose for above-mentioned problem normally, do strut very strong, but the increase of strut weight causes its Efficiency Decreasing, manufacture cost rises, even increase to the degree that to accept namely can't to realize supporting purpose, and when the wind wheel radius is larger, even the strut intensity enhancing still has than large deflection.
(2) strut is at the fixed end of king-post one side, and namely the port of generator amature connecting end is subjected to larger moment of flexure, and this can easily cause the infringement to generator, reduces the working life of generator.
When (3) rotating to respect to the different position of the direction of the wind comes from the blade rotary process, stressed difference, these not of uniform size stressedly amplify through the strut cantilever cause between each blade rotating speed different, thereby the generation chatter, these can cause wind wheel to move the problems such as steady and vibration.
(4) because stress form is unreasonable, the wind wheel weight transfer is to pass to king-post through strut, generator external rotor, not only causes the increases such as surface friction drag, reduces the blower fan generating efficiency, and causing the fatigue stress of each associated components large, the life ensuring design is difficult, cost is high.
Be badly in need of at present a kind ofly can guaranteeing that wind wheel weight directly born by king-post, and without generator, and substantially do not affect the air vane supporting structure of wind wheel rotation.
Summary of the invention
The object of the present invention is to provide a kind of wind wheel slant-pull structure of vertical axis aerogenerator, it is directly delivered to vertical axis wind turbine weight the wind wheel supporting structure of king-post, reach and reduce wind wheel spin friction resistance and vibration thereof, avoid the change of the wind wheel aerodynamic configuration that wind wheel blade causes because the strut deflection deformation is sagging, realize easily the high-power vertical shaft wind turbines rotor reasonable effectively support.
Invention thinking of the present invention is:
The topmost method of problem that solves above-mentioned prior art is the amount of deflection that reduces the strut overhang, and changes the bang path of wind wheel weight, and it is directly delivered on king-post.And the best approach that reduces strut overhang tip deflection is to be that the overhang end adds a fulcrum at strut, and this fulcrum should directly be fixed on king-post, to reach directly with the purpose of wind wheel weight transmitting to king-post.For not affecting wind wheel rotation, the less bearing of frictional resistance should be set as the bearing of this fulcrum on king-post.On the other hand, can produce certain lift in the wind wheel rotary course, this lift can make the blade that is connected to the strut end promote, if add the traction action that makes progress of a fair-sized, namely adopt suspension cable and contain certain sag of chain, can make lift effect only be presented as a small amount of variation of drag-line power, under the acting in conjunction of upwards tractive and lift, just can guarantee that blade is basically not sagging, and can guarantee running stability.
To achieve these goals, the present invention adopts technological scheme as follows:
A kind of wind wheel slant-pull structure of vertical axis aerogenerator is: on the king-post of vertical axis aerogenerator, wind wheel is set, described wind wheel comprises blade and strut, one end of some struts is fixed on the outboard rotor of the generator that arranges on described king-post, and the other end is fixed on the inner side surface of described blade; Described slant-pull structure comprises oblique pull bearing and a drag-line; Sheathed being fixed on of described oblique pull bearing is positioned on described king-post above described generator, and described drag-line one end is connected with the external rotating component of described bearing, and the other end is connected with described blade and/or strut, and on each blade, equal correspondence is provided with a described drag-line.
Wind wheel drives generator through strut, and its weight by being arranged on oblique pull bearing and the suspension cable on wind wheel or generator top king-post, is directly delivered on king-post.One end of suspension cable is connected on the oblique pull bearing, and the other end is connected on wind wheel upper support bar or blade.For effectively reducing the strut amount of deflection, should try one's best near blade, the i.e. cantilever end of strut overhang with the tie point of strut.
Generally, one the suspension cable of strut end just enough reduction strut tip deflection be reduced to allowed band, but huge at wind wheel is that strut is when longer, also can be at strut middle part or the middle part slightly increase again an end that connects an additional suspension cable in the outside, the other end of this additional suspension cable is connected on described oblique pull bearing housing.
The present invention selects suspension cable but not rigid bar is justified, and its reason is:
1) drag-line can reduce aerodynamical resistance compared with rigid bar;
The lift that produces when 2) containing the wind wheel rotation.
Described wind wheel can be that two groups or more described strut up and down is set, every group of described strut connects an outboard rotor of being located at the described generator on king-post, perhaps, generator is not set between some group struts and king-post and bearing is set, at this moment, below suspension cable needn't be set again on one group or several groups of described struts, this is because after top one group of described strut cantilever end held, one group of described strut cantilever end below in fact also having held by described blade.
An end that is connected with described blade of described drag-line preferably is connected on the tie point of described blade and described strut.
Angle between described drag-line and strut is preferably the 20-40 degree.
Angle between described drag-line and strut is more optimized is chosen as the 25-35 degree.
The starting torque of described oblique pull bearing is that static friction moment of torsion M preferably can satisfy
F is drag-line power, and R is oblique pull bearing radius, and θ is the angle between drag-line and strut,
Be the wind-driven generator maximum permission slip of up and down two motors angle.
Described maximum tolerance angle refers to that two the supporting wheel rotation angles in up and down differ an angle and blade is not turned round bad maximum permissible value, is the structural parameter that the Rigidity and strength by blade determines.
Has the fixed structure that connects described suspension cable on the outer surface of the rotation outer ring of described oblique pull bearing.This fixed structure can be the retaining ring that is fixed on described rotation outer ring.
Described drag-line is the cable wire that high-strength material is made.Adopt the high material of intensity, the cable wire cross section is less, and windage is also less.
When described wind wheel is installed, leaf weight is supported by lifting appliance, and under this state, suspension cable is tension.
Under this tension, described oblique pull lock to give tight mechanical axis power be 200N～1000N, make strut be horizontal.
After described lifting appliance removed, there was a distortion sag of chain strut end, in order to offset wind wheel rotation lift.
Described cable pull degree is that strut is the level of state when not being subjected to the blade Action of Gravity Field and is advisable.When wind wheel is installed, the weight such as blade is supported by lifting appliance, under this state, suspension cable is strained, give tight mechanical axis power and be about 200N～1000N, make strut be horizontal, after lifting appliance removes, it is sagging that the strut end has certain distortion, and this distortion sag of chain needn't give tight power by drag-line and eliminate, but offset the necessary sag of chain of wind wheel rotation lift.
Beneficial effect of the present invention is:
The weight that slant-pull structure of the present invention has solved large wind wheel effectively supports problem, directly with the wind wheel weight transmitting to king-post, do not affect the wind wheel rotation.Both can greatly reduce the design and manufacture cost of strut, and can effectively reduce the fatigue stress of generator and strut, increase the working life of wind-driven generator.And due to the improvement of stressing conditions, can greatly reduce to rotate frictional resistance, improve generating efficiency.The basic self balancing of radial force that the oblique pull bearing is suffered can increase running stability, reduce the wind wheel vibration.
Innovation of the present invention is, has introduced the bang path that a kind of new wind wheel weight supports, and has broken through the restriction of conventional wind wheel supporting structure, makes the support structure designs of large wind wheel become possibility.Utilize the method for traditional they sup-port blade, size and the weight of wind wheel is had very large restriction, be difficult to wind wheel is done greatly, thereby be difficult to realize manufacturing and designing of high-power vertical shaft blower fan.
The invention will be further described below by accompanying drawing.
Description of drawings
Fig. 1 not only manufactures and designs difficulty for conventional wind wheel supporting structure of the present invention and distortion schematic diagram are not set when large wind wheel, and the wind wheel aerodynamic configuration is difficult to guarantee.
Fig. 2 is the structural representation sketch that is provided with the vertical axis aerogenerator after the wind wheel slant-pull structure of vertical axis aerogenerator provided by the invention.
Fig. 3 arranges the structural representation sketch of this vertical axis aerogenerator of two skew cables on a strut.
Embodiment
As shown in Figure 2, a kind of wind wheel slant-pull structure of vertical axis aerogenerator, wherein, on the king-post 03 of vertical axis aerogenerator, wind wheel is set, described wind wheel comprises blade 01 and strut 02, one end of some struts 02 is fixed on the outboard rotor 06 of the generator that arranges on king-post 03, and the other end is fixed on the inner side surface of the vertical blade 01 that arranges of column; Described slant-pull structure comprises oblique pull bearing 04 and drag-line 05; The sheathed top that is positioned at the outboard rotor 06 of described generator on described king-post 03 that is fixed on of described oblique pull bearing 04, described drag-line 05 1 ends are connected with the external rotating component of described oblique pull bearing, and the other end is connected with described blade or strut.In the present embodiment, suspension cable is connected on the tie point of blade 01 and strut 02.
Drag-line 05 is strand spiral rope, and drag-line 05 tension degree is not hung to be the level of state when being subjected to blade 01 Action of Gravity Field when installing (wind wheel, leaf weight is born by other crane gear) with strut 02 and is advisable.Tension wind wheel is pulled up, and the lift impact that produces when being difficult to eliminate the wind wheel rotation is crossed pine and caused strut stressed excessive, and is sagging obvious.
Angle between drag-line 05 of the present invention and strut 02, namely oblique pull angle θ is unsuitable excessive also unsuitable too small.If surpass the framework of the present definition, angle is excessive, and the oblique pull bearing is difficult to be driven by blade, and namely suspension cable will consist of a resistance to blade rotary, hinders blade rotary, will reduce generating efficiency like this.If angle too small oblique pulling is too large not only requires greatly to improve to drag-line, and the radial force of oblique pull bearing also becomes greatly, and the bearing cost increases, and makes so whole blower fan cost rising.Oblique pull angle disclosed by the invention can be in the situation that least cost can effectively solve the prior art problem again, and can farthest increase the efficient of generating.
Oblique pull bearing 04 in this slant-pull structure be noted the selection of its starting torque when selecting, the starting torque M of oblique pull bearing meets following formula:
Wherein: F is drag-line power, and R is the bearing radius, and θ is the oblique pull angle,
Be the maximum permission slip of up and down motor angle.Wherein drag-line power can obtain according to the mechanical analysis of concrete structure.
Described cable pull degree is that strut is the level of state when not being subjected to the blade Action of Gravity Field and is advisable.When wind wheel is installed, the weight such as blade is supported by lifting appliance, under this state, suspension cable is strained, give tight mechanical axis power and be about 200N～1000N, make strut be horizontal, after lifting appliance removes, it is sagging that the strut end has certain distortion, and this distortion sag of chain needn't give tight power by drag-line and eliminate, but offset the necessary sag of chain of wind wheel rotation lift.
In specific design can be for example: determined drag-line power, bearing radius and the up and down motor maximum slip angle of allowing, determined the oblique pull angle by the starting torque of selecting bearing, or determined to select corresponding bearing starting torque behind the oblique pull angle.
Claims (7)
1. the wind wheel slant-pull structure of a vertical axis aerogenerator, on the king-post of vertical axis aerogenerator wherein, wind wheel is set, comprise blade and strut, one end of some described struts is fixed on the outboard rotor of the generator that arranges on described king-post, and the other end is fixed on the inner side surface of described blade; It is characterized in that: described slant-pull structure comprises oblique oblique pull bearing and a drag-line; The sheathed top that is positioned at described generator on described king-post that is fixed on of described oblique pull bearing, described suspension cable one end is connected with described oblique pull bearing, and the strut that the other end is connected with described blade and/or its connects;
When described wind wheel is installed, leaf weight is supported by lifting appliance, and under this state, suspension cable is tension;
Under this tension, described suspension cable to give tight mechanical axis power be 200N～1000N, make strut be horizontal;
After described lifting appliance removed, there was a distortion sag of chain strut end, in order to offset wind wheel rotation lift.
2. the wind wheel slant-pull structure of vertical axis aerogenerator according to claim 1, is characterized in that, the described the other end of described drag-line is connected on the tie point of described blade and described strut.
3. the wind wheel slant-pull structure of vertical axis aerogenerator according to claim 1, is characterized in that, the angle between described drag-line and described strut is the 20-40 degree.
4. the wind wheel slant-pull structure of vertical axis aerogenerator according to claim 3, is characterized in that, the angle between described drag-line and described strut is the 25-35 degree.
5. the wind wheel slant-pull structure of vertical axis aerogenerator according to claim 1, is characterized in that, the starting torque of described oblique pull bearing satisfies
F is drag-line power, and R is oblique pull bearing radius, and θ is the angle between drag-line and strut,
Be the wind-driven generator maximum permission slip of up and down two motors angle.
One of according to claim 1 to 5 described vertical axis aerogenerator the wind wheel slant-pull structure, it is characterized in that, also comprise the additional suspension cable of setting up, the one end is connected with described oblique pull bearing, and its other end connects firmly on the strut body of rod in described strut middle part or the outside, middle part.
One of according to claim 1 to 5 described vertical axis aerogenerator the wind wheel slant-pull structure, it is characterized in that, described wind wheel is that the two groups of described struts in up and down are set, every group of described strut is connected at the outboard rotor of two described generators on king-post, and described suspension cable is arranged on described king-post and top one group of described strut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100485085A CN102086841B (en) | 2011-03-01 | 2011-03-01 | Wind wheel cable-stayed structure of wind driven generator with vertical shaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100485085A CN102086841B (en) | 2011-03-01 | 2011-03-01 | Wind wheel cable-stayed structure of wind driven generator with vertical shaft |
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| CN102086841A CN102086841A (en) | 2011-06-08 |
| CN102086841B true CN102086841B (en) | 2013-06-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508139A (en) * | 2016-01-20 | 2016-04-20 | 雒龙泉 | Combined vertical axis wind driven generator device |
| CN106150919A (en) * | 2016-08-29 | 2016-11-23 | 嘉兴国电通新能源科技有限公司 | A kind of twin shaft H type vertical shaft fan |
| CN109323203B (en) * | 2018-11-12 | 2023-08-08 | 河北工业大学 | Extra-long tunnel illumination intelligent energy-saving system based on wind power generation |
| CN111677627B (en) * | 2020-06-03 | 2022-02-25 | 河南恒聚新能源设备有限公司 | Turbine rotor assembly for vertical axis wind power generation system and power generation system |
| CN113738596A (en) * | 2021-09-03 | 2021-12-03 | 天津大学 | Floating type spiral vertical axis fan superstructure experimental model |
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| CN1702322A (en) * | 2005-06-14 | 2005-11-30 | 韩永勤 | Wind energy generator |
| CN101660496A (en) * | 2008-12-12 | 2010-03-03 | 中金富华能源科技有限公司 | Vertical shaft wind power generating system being capable of avoiding strong wind |
| CN202055992U (en) * | 2011-03-01 | 2011-11-30 | 国能风力发电有限公司 | Wind wheel inclined stay structure of a vertical shaft wind generator |
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| JPS5920871B2 (en) * | 1980-08-04 | 1984-05-16 | 工業技術院長 | windmill |
| WO1997049565A1 (en) * | 1996-06-25 | 1997-12-31 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Wheel for a motor vehicle |
| JP2005061328A (en) * | 2003-08-13 | 2005-03-10 | Fjc:Kk | Blade of windmill and vertical axis windmill |
| CN2828362Y (en) * | 2005-11-02 | 2006-10-18 | 罗卫城 | External rotor generator wind wheel |
| CN201027596Y (en) * | 2007-04-05 | 2008-02-27 | 王华正 | External rotor type aero-generator with vertical axis |
| CN101187357B (en) * | 2007-12-06 | 2010-10-06 | 张大鹏 | Wind-driven generator |
| CN101446271B (en) * | 2008-12-26 | 2011-08-17 | 乔飞飞 | Tower-type wind generating set |
| CN101446272B (en) * | 2008-12-26 | 2012-01-04 | 乔飞飞 | Single-windmill, single-motor, vertical-wheel and multi-stage wind power tower |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702322A (en) * | 2005-06-14 | 2005-11-30 | 韩永勤 | Wind energy generator |
| CN101660496A (en) * | 2008-12-12 | 2010-03-03 | 中金富华能源科技有限公司 | Vertical shaft wind power generating system being capable of avoiding strong wind |
| CN202055992U (en) * | 2011-03-01 | 2011-11-30 | 国能风力发电有限公司 | Wind wheel inclined stay structure of a vertical shaft wind generator |
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| Title |
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| JP昭57-32074A 1982.02.20 |
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