CN204476670U - A kind of blade of wind-driven generator and wind-driven generator - Google Patents
A kind of blade of wind-driven generator and wind-driven generator Download PDFInfo
- Publication number
- CN204476670U CN204476670U CN201420872763.0U CN201420872763U CN204476670U CN 204476670 U CN204476670 U CN 204476670U CN 201420872763 U CN201420872763 U CN 201420872763U CN 204476670 U CN204476670 U CN 204476670U
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- blade
- wind
- track
- driven generator
- connecting rod
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- Y02E10/722—
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Abstract
Blade of wind-driven generator involved by the utility model has: blade body, comprises with wheel hub rigidly connected stator blade and can the deflecting blade that deflects of opposite fixed blades; And arrangement for deflecting.When wind-driven generator is static, deflecting blade deflects several angle relative to stator blade, power suffered by the aerofoil profile power suffered by component compared with normal vane airfoil profile is in the movement direction large at the component of moving direction, the starting torque that can provide is large, therefore namely less wind speed can make wind wheel overcome the resistance of Transmitted chains thus drive wind wheel to rotate, so do not need to consume other energy can reach utilization to low wind speed, after wind wheel reaches certain rotating speed, deflecting blade does not deflect relative to stator blade, therefore also need not reduce under declared working condition and can reach the utilization to low wind speed to the utilization of wind energy.
Description
Technical field
The utility model relates to a kind of blade of wind-driven generator and wind-driven generator, belongs to wind power generation field.
Background technique
At present, the blade of wind-driven generator is mostly directly be rigidly connected with wheel hub, the design of blade be with the declared working condition of wind-driven generator for standard, enable it at utmost absorb wind energy when declared working condition.But the starting torque that this design makes wind-driven generator be produced by blade when starting is very little, when wind speed is too little, is not enough to overcome driving chain of wind driven generator resistance.So this wind-driven generator needs larger wind speed to run, and can not utilize low wind speed.
Existing two kinds of methods can reach the utilization to low wind speed, one method is that wind-driven generator not only can as generator but also can as motor, blade rotary is driven as motor wind-driven generator start up period, but this kind of method needs to consume electric energy, simultaneously higher to the requirement of generator and electronic component, therefore, the method impracticable.
Another kind method can consume electric energy, to generator and electronic component also without particular/special requirement, consider lower design blade in wind-driven generator declared working condition and starting performance, the distribution of starching elongation by changing each aerofoil profile in blade improves the starting performance of wind-driven generator, reach the utilization to low wind speed, but, this kind of method can reduce wind-driven generator under declared working condition time utilization to wind energy.
Model utility content
The utility model carries out to solve above-mentioned problem, object is to provide a kind of blade of wind-driven generator and wind-driven generator, installing this blade enables wind-driven generator rotate at low wind speeds, the utilization to wind energy under declared working condition can not be reduced again, thus reach the object of the utilization to low wind speed.
The utility model to achieve these goals, have employed following structure.
< structure one >
Blade of wind-driven generator involved by the utility model has: blade body, comprises with wheel hub rigidly connected stator blade and can the deflecting blade that deflects of opposite fixed blades; And arrangement for deflecting, comprise the first track, the second track, spring and T-shaped connecting rod, first track and the second track are separately positioned on the both sides of stator blade width direction and extend along length of blade direction, two ends relative on the cross bar of T-shaped connecting rod can in described first track and the second track inter-sync campaign, the front end of the montant of T-shaped connecting rod is fixedly connected with deflecting blade, and the cross bar of T-shaped connecting rod is connected with described stator blade elasticity.
Before generator starts, blade is static, and two ends relative on the cross bar of T-shaped connecting rod are positioned at the first track and the second track near wheel hub the same side of wind-driven generator, make deflecting blade deflect several angle relative to stator blade.
After generator starts, blade rotation, the relative two ends of T-shaped connecting rod, when the first track and the second track move to the side away from wheel hub under the influence of centrifugal force, make deflecting blade and stator blade not deflect.
Further, blade of wind-driven generator of the present utility model also has following feature: have an angle between the first track and the second track, and the center of two tracks spatially overlaps.
Further, blade of wind-driven generator of the present utility model also has following feature: the two ends of described first track and the second track are provided with groove, and when the relative two ends of described T-shaped connecting rod are in described groove, motion is subject to certain obstruction.
Further, blade of wind-driven generator of the present utility model also has following feature: the cross bar of T-shaped connecting rod is connected by spring with stator blade, and the front end of spring is connected with the cross bar of T-shaped connecting rod, and the end of spring is fixed on stator blade.
< structure two >
Wind-driven generator involved by the utility model has: wind wheel, and wherein wind wheel has more blades; And to be connected with wind wheel and the kinetic transformation of the blade rotation of wind wheel can be become the Power Generation Section of electric energy, blade has: blade body, comprises with wheel hub rigidly connected stator blade and can the deflecting blade that deflects of opposite fixed blades; And arrangement for deflecting, comprise the first track, the second track, spring and T-shaped connecting rod, first track and the second track are separately positioned on the both sides of stator blade width direction and extend along length of blade direction, two ends relative on the cross bar of T-shaped connecting rod can in described first track and the second track inter-sync campaign, the front end of the montant of T-shaped connecting rod is fixedly connected with deflecting blade, and the cross bar of T-shaped connecting rod is connected with described stator blade elasticity.
Before generator starts, blade is static, and two ends relative on the cross bar of T-shaped connecting rod are positioned at the first track and the second track near wheel hub the same side of wind-driven generator, make deflecting blade deflect several angle relative to stator blade.
After generator starts, blade rotation, the relative two ends of T-shaped connecting rod, when the first track and the second track move to the side away from wheel hub under the influence of centrifugal force, make deflecting blade and stator blade not deflect.
Further, wind-driven generator of the present utility model also has following feature: have an angle between the first track and the second track, and the center of two tracks spatially overlaps.
Further, wind-driven generator of the present utility model also has following feature: the two ends of the first track and the second track are provided with groove, and when the relative two ends of T-shaped connecting rod are in groove, motion is subject to certain obstruction.
Further, wind-driven generator of the present utility model also has following feature: the cross bar of T-shaped connecting rod is connected by spring with stator blade, and the front end of spring is connected with the cross bar of T-shaped connecting rod, and the end of spring is fixed on stator blade.
The effect of model utility and effect
According to blade of wind-driven generator of the present utility model and wind-driven generator, because blade has: arrangement for deflecting and blade body, blade body comprises stator blade and deflecting blade.When wind-driven generator is static, deflecting blade deflects several angle relative to stator blade, power suffered by the aerofoil profile power suffered by component compared with normal vane airfoil profile is in the movement direction large at the component of moving direction, the starting torque that can provide is large, therefore namely less wind speed can make wind wheel overcome the resistance of Transmitted chains thus drive wind wheel to rotate, so do not need to consume other energy can reach utilization to low wind speed, after wind wheel reaches certain rotating speed, deflecting blade does not deflect relative to stator blade, therefore also need not reduce under declared working condition and can reach the utilization to low wind speed to the utilization of wind energy.
Accompanying drawing explanation
Fig. 1 is the blade of wind-driven generator structural representation in an embodiment that the utility model relates to;
Fig. 2 is the arrangement for deflecting partial enlarged drawing in an embodiment of the blade of wind-driven generator that the utility model relates to;
Fig. 3 is the first track and the second track plan view in an embodiment in the arrangement for deflecting of the blade of wind-driven generator that the utility model relates to;
Fig. 4 be the utility model relate to wind-driven generator start up period common blade stressed schematic diagram;
Fig. 5 be the utility model relate to wind-driven generator start up period deflecting blade stressed schematic diagram;
Fig. 6 be the utility model relate to wind-driven generator deflecting blade start up period and the position view of operation phase; And
Fig. 7 is the wind-driven generator part-structure schematic diagram in an embodiment that the utility model relates to.
Embodiment
Be elaborated referring to the implementation process of accompanying drawing to the blade of wind-driven generator involved by the utility model and wind-driven generator.
< embodiment one >
Fig. 1 is the blade of wind-driven generator structural representation in an embodiment that the utility model relates to.As shown in Figure 1, blade of wind-driven generator 10 comprises stator blade 11, deflecting blade 12 and arrangement for deflecting 20.Stator blade 11 is rigidly connected with the wheel hub of wind turbines rotor, and deflecting blade 12 is connected with stator blade 11 by arrangement for deflecting 20, and can deflect several angle by opposite fixed blades 11.When stator blade 11 and deflecting blade 12 do not deflect, identical with common blade shape.
Fig. 2 is the arrangement for deflecting partial enlarged drawing in an embodiment of the blade of wind-driven generator that the utility model relates to, and Fig. 3 is the first track and the second track plan view in an embodiment in the arrangement for deflecting of the blade of wind-driven generator that the utility model relates to.
As shown in Figure 2, arrangement for deflecting 20 comprises the first track 21, second track 22, T-shaped connecting rod 23 and spring 24.The front end of spring 24 is fixed in the middle part of the cross bar of T-shaped connecting rod 23, and the end of spring 24 is fixed on stator blade 11 inside.
First track 21 and the second track 22 are separately positioned on stator blade 11 inner vanes width direction both sides and extend along length of blade direction, and two tracks are the arc that length is equal, and the distance of corresponding point-to-point transmission is all equal.As shown in Figure 3, the first track 21 and the second track 22 antarafacial intersect, and the center of two tracks spatially overlaps.The angle that two track antarafacials intersect formation is θ, and the first track 21 and the second track 22 two ends are provided with groove.
The montant of T-shaped connecting rod 23 is fixed on the inside of deflecting blade 12, the cross bar two ends of T-shaped connecting rod 23 can, in the first guide rail 21 and the second guide rail 22 inter-sync campaign, can drive deflecting blade 12 to deflect when T-shaped connecting rod 23 moves in the first guide rail 21 and the second guide rail 22.As shown in Figure 1, the cross bar two ends of T-shaped connecting rod 23 are provided with smooth bumps, when the cross bar of T-shaped connecting rod 23 is in the two ends of the first track 21 and the second track 22, the projection at the cross bar two ends of T-shaped connecting rod 23 is in the groove at two guide rail two ends, motion is subject to certain obstruction, T-shaped connecting rod 23 needs certain external force to move, and now, deflecting blade 12 is in metastable state; When the cross bar of T-shaped connecting rod 23 is in the first track 21 and the second track 22 middle arbitrary position, T-shaped connecting rod 23 is in the state of direction guiding rail two end motion, and now, deflecting blade 12 plays pendulum.
Fig. 4 be the utility model relate to wind-driven generator start up period common blade stressed schematic diagram, Fig. 5 be the utility model relate to wind-driven generator start up period deflecting blade stressed schematic diagram.U is blade rotation direction, and F is the power suffered by common blade, and F ' is the power suffered by deflecting blade, and vertical dotted line is wind wheel plane of rotation.In Fig. 5, the loop curve of dotted line is deflecting blade, and when deflecting blade is static, stressed F ' component is in the movement direction large, and the moment of generation is large, therefore under low wind speed, namely can overcome driving chain of wind driven generator resistance thus drive wind wheel to rotate.
In Fig. 4, the loop curve of solid line is common blade, and when normal blade is static, stressed F component is in the movement direction less, and the moment of generation is little, therefore needs just can overcome the resistance of driving chain of wind driven generator relative to high wind speed thus drive wind wheel to rotate.
Fig. 6 be the utility model relate to wind-driven generator deflecting blade start up period and the position view of operation phase.
As shown in Figure 6, solid line loop curve figure is the position of deflecting blade under relative high wind speed, and dotted circle curvilinerar figure is the position of deflecting blade under static and low wind speed.
When wind-driven generator is static, the cross bar of T-shaped connecting rod 23 is at the left end of the first guide rail 21 and the second guide rail 22, and now, deflecting blade 12 deflects certain angle relative to stator blade 11, start up period and low wind speed time, deflecting blade 12 is all in the position shown in dotted circle curve.
When wind speed increases, when wind wheel reaches certain rotating speed, the centripetal force of deflecting blade 12 increases, therefore, the pulling force that spring 24 provides is less than the centripetal force of deflecting blade 12 needs, T-shaped connecting rod 23 moves right, in the process moving to two track right-hand members, deflecting blade 12 plays pendulum, the cross bar of T-shaped connecting rod 23 can move to the right-hand member of the first guide rail 21 and the second guide rail 22 under the influence of centrifugal force, now, between deflecting blade 12 and stator blade 11, there is no angle, reach the utilization ratio of the corresponding wind energy of common blade.When wind-force reduces, the pulling force that spring 24 provides is greater than the centripetal force of deflecting blade 12 needs, therefore T-shaped connecting rod 23 is retracted two track left ends, and deflecting blade 12 and stator blade 11 shape form an angle, and wind wheel runs at low wind speeds.When wind speed is less, wind wheel stops operating, and now, deflecting blade 12 and stator blade 11 shape form an angle, and convenient next time starts.
< embodiment two >
Fig. 7 is the wind-driven generator part-structure schematic diagram in an embodiment that the utility model relates to.
As shown in Figure 7, wind-driven generator 30 of the present utility model comprises wind wheel 31 and Power Generation Section 32, and wind wheel 31 comprises more blades 10, can be the electric energy of Power Generation Section 32 by the rotation of wind wheel 31 by wind energy transformation.Blade 10 comprises stator blade 11, deflecting blade 12 and arrangement for deflecting 20.Because the deflecting blade 12 of blade 10 deflects several angle relative to stator blade 11, wind-driven generator 30 can generate electricity under relatively low wind speed, thus improves the utilization ratio to low wind speed.
The effect of embodiment and effect
Blade of wind-driven generator involved by the present embodiment and wind-driven generator, because blade has: arrangement for deflecting and blade body, blade body comprises stator blade and deflecting blade.When wind-driven generator is static, deflecting blade deflects several angle relative to stator blade, power suffered by the aerofoil profile power suffered by component compared with normal vane airfoil profile is in the movement direction large at the component of moving direction, the starting torque that can provide is large, therefore namely less wind speed can make wind wheel overcome the resistance of Transmitted chains thus drive wind wheel to rotate, so do not need to consume other energy, also need not reduce under declared working condition and can reach the utilization to low wind speed to the utilization of wind energy.
In addition, the first track and the second track two ends are provided with groove, when deflecting blade static with when rotating relative to high wind speed, the projection at the cross bar two ends of T-shaped connecting rod is in two orbital grooves, motion be subject to certain obstruction, make deflecting blade be in metastable state.
Claims (8)
1. a blade of wind-driven generator, is arranged on the wheel hub of wind turbines rotor, it is characterized in that, have:
Blade body, comprises and the rigidly connected stator blade of described wheel hub and can the deflecting blade that deflects of relative described stator blade; And
Arrangement for deflecting, comprises the first track, the second track and T-shaped connecting rod, and described first track and the second track are separately positioned on the both sides of described stator blade width direction and extend along length of blade direction,
Two ends relative on the cross bar of described T-shaped connecting rod can in described first track and the second track inter-sync campaign, and the front end of the montant of described T-shaped connecting rod is fixedly connected with deflecting blade, and the cross bar of described T-shaped connecting rod is connected with described stator blade elasticity,
Before described wind-driven generator starts, described blade is static, on the cross bar of described T-shaped connecting rod, relative two ends are positioned at described first track and the second track near wheel hub the same side of described wind-driven generator, make described deflecting blade deflect several angle relative to stator blade
After described wind-driven generator starts, described blade rotation, two ends relative on the cross bar of described T-shaped connecting rod, when described first track and the second track move to the side away from wheel hub under the influence of centrifugal force, make described deflecting blade and stator blade not deflect.
2. blade of wind-driven generator according to claim 1, is characterized in that:
Wherein, have an angle between described first track and the second track, and the center of two tracks spatially overlaps.
3. blade of wind-driven generator according to claim 1, is characterized in that:
Wherein, the two ends of described first track and the second track are provided with groove, and when two ends relative on described T-shaped connecting rod cross bar are in described groove, motion is subject to certain obstruction.
4. blade of wind-driven generator according to claim 1, is characterized in that:
Wherein, the cross bar of described T-shaped connecting rod is connected by spring with described stator blade, and the front end of described spring is connected with the cross bar of described T-shaped connecting rod, and the end of described spring is fixed on described stator blade.
5. a wind-driven generator, is characterized in that, has:
Wind wheel, described wind wheel has more blades and wheel hub, and described blades installation is on described wheel hub; And
The Power Generation Section that also kinetic transformation of the blade rotation of described wind wheel can be become electric energy is connected with described wind wheel,
Described blade has: blade body, comprises and the rigidly connected stator blade of described wheel hub and can the deflecting blade that deflects of relative described stator blade; And
Arrangement for deflecting, comprises the first track, the second track, spring and T-shaped connecting rod, and described first track and the second track are separately positioned on the both sides of described stator blade width direction and extend along length of blade direction,
Two ends relative on the cross bar of described T-shaped connecting rod can in described first track and the second track inter-sync campaign, the front end of montant is fixedly connected with deflecting blade, the front end of described spring is connected with the cross bar of described T-shaped connecting rod, and the end end of described spring is fixed on described stator blade
Before described wind-driven generator starts, described blade is static, on the cross bar of described T-shaped connecting rod, relative two ends are positioned at described first track and the second track near the wheel hub side of described wind-driven generator, make described deflecting blade deflect several angle relative to stator blade
After described wind-driven generator starts, described blade rotation, the relative two ends of described T-shaped connecting rod, when described first track and the second track move to the side away from wheel hub under the influence of centrifugal force, make described deflecting blade and stator blade not deflect.
6. wind-driven generator according to claim 5, is characterized in that:
Wherein, have an angle between described first track and the second track, and the center of two tracks spatially overlaps.
7. wind-driven generator according to claim 5, is characterized in that:
Wherein, the two ends of described first track and the second track are provided with groove, and when the relative two ends of described T-shaped connecting rod are in described groove, motion is subject to certain obstruction.
8. wind-driven generator according to claim 5, is characterized in that:
Wherein, the cross bar of described T-shaped connecting rod is connected by spring with described stator blade, and the front end of described spring is connected with the cross bar of described T-shaped connecting rod, and the end of described spring is fixed on described stator blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420872763.0U CN204476670U (en) | 2014-12-29 | 2014-12-29 | A kind of blade of wind-driven generator and wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420872763.0U CN204476670U (en) | 2014-12-29 | 2014-12-29 | A kind of blade of wind-driven generator and wind-driven generator |
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| Publication Number | Publication Date |
|---|---|
| CN204476670U true CN204476670U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420872763.0U Expired - Fee Related CN204476670U (en) | 2014-12-29 | 2014-12-29 | A kind of blade of wind-driven generator and wind-driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345002A (en) * | 2019-06-03 | 2019-10-18 | 沈阳航空航天大学 | A kind of Blades For Horizontal Axis Wind of the adaptive rotational deformation of blade tip |
-
2014
- 2014-12-29 CN CN201420872763.0U patent/CN204476670U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345002A (en) * | 2019-06-03 | 2019-10-18 | 沈阳航空航天大学 | A kind of Blades For Horizontal Axis Wind of the adaptive rotational deformation of blade tip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20151229 |
|
| EXPY | Termination of patent right or utility model |