CN204024906U - A kind of device controlling pneumatic equipment blades made load and deformation - Google Patents
A kind of device controlling pneumatic equipment blades made load and deformation Download PDFInfo
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- CN204024906U CN204024906U CN201420409769.4U CN201420409769U CN204024906U CN 204024906 U CN204024906 U CN 204024906U CN 201420409769 U CN201420409769 U CN 201420409769U CN 204024906 U CN204024906 U CN 204024906U
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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 kind of device controlling pneumatic equipment blades made load and deformation, this device is the free rotary type blade installing a suitable length at pneumatic equipment blades made blade tip, and the steering wheel of free rotary type blade interior is connected with the rudder face at rear portion by drive link; Servo driving rudder face rotates thus changes the aerodynamic configuration of free rotary type blade; Free rotary type blade produces around pneumatic equipment blades made and rotates under aerodynamical moment effect, changes the angle of attack between itself and incoming flow, thus controls aerodynamic loading and the distortion of pneumatic equipment blades made.Application of installation scope of the present utility model is comparatively wide, necessarily can reequip on the business pneumatic equipment blades made of existing maturation.The funds not only saving the valuable time and again research and develop, the aeroperformance of pneumatic equipment blades made under different operating mode can also be improved, stablize the output power of wind energy conversion system under different inlet flow conditions, expand the operating envelope of wind energy conversion system, be conducive to the annual electricity generating capacity increasing wind energy conversion system, also increase the Security of blade and relevant device.
Description
Technical field
The utility model belongs to wind energy conversion system technical field, particularly a kind of wind energy conversion system auxiliary device.
Background technique
Along with human society marches toward 21 century, the problems such as environmental pollution and traditional fossil resources exhaustion come into one's own day by day, and new energy development and use have become global common task.Wherein, wind energy, as the one of reproducible clean energy resource, is applied more and more widely, and large-scale grid-connected horizontal axis wind-driven generator group (hereinafter referred to as wind energy conversion system) becomes the principal mode utilizing wind energy.
The blade of wind energy conversion system, as wind catcher, carries the effect absorbing wind energy, and the quality of its design directly decides performance and the reliability of unit.Last decade, along with the use of new material, new technology, length of blade is increased to more than 100 meter from tens meters, tens meters, and the power of wind energy conversion system is promoted to MW class by multikilowatt, significantly reduces the degree electricity cost of wind-power electricity generation.Therefore, the maximization of wind energy conversion system has become the trend of wind-powered electricity generation industry.But along with the increase of blade dimensions, the aerodynamic loading suffered by pneumatic equipment blades made exponentially type increases.Particularly under the bad working environments such as strong wind or prominent wind, existing speed-changing oar-changing mechanism can not removal this sudden change load and huge malformation rapidly, even cause the accidents such as blade and pylon collide, thus have impact on Security and the working life of wind energy conversion system.
Existing disclosed patent at present, such as Chinese patent " a kind of movable winglet device for wind turbine blade " (publication number: 102996367A, publication date 2013.3.27), " a kind of pneumatic equipment blades made with tip vane " (publication number: 103485973A, publication date 2014.1.1) and " the pneumatic equipment blades made Pneumatic design method of low threshold wind velocity " (publication number: 102108947A, publication date 2011.6.29), controlled by the aeroperformance of flow control means to pneumatic equipment blades made, as blade tip winglet, blade tip throws formula aerodynamic brake away, trailing edge flap etc.But also there is certain shortcoming in these control devices, as: fixed tip vane, although the output power that can increase wind energy conversion system, if incoming flow conditions exceeds design conditions, tip vane cannot play good control effects; Blade tip throws formula aerodynamic brake away can reduce wheel speed in time under some large wind conditions, but its brake process is complicated, also needs complicated machine control unit.Once work, then need to stop vane rotary being retracted to initial position.And traditional mechanical brake, be heat energy by the wearing and tearing of brake block by kinetic transformation, not only can cause the decline of braking efficiency, but also add extra energy consumption.In addition, dynamic response is slow, to install complicated etc. be also the ubiquitous problem of existing control device.
And from aerodynamics angle and existing pneumatic equipment blades made working principle, the main aerodynamic loading of blade and capture ability mainly concentrate near blade tip.Therefore, blade tip near zone is the sensitizing range of carrying out blade loading and Deformation control, by installing control gear at blade tip, effectively can change load diatibution and the malformation of whole blade, and can stablize wind energy conversion system rotating speed and output power.
Model utility content
Problem to be solved in the utility model is to provide the device that a kind of structure simply controls pneumatic equipment blades made load and deformation, this device is applicable to various operating mode, just can sudden change load rapidly on the pneumatic equipment blades made that causes because of environment of removal and huge malformation by simple adjustment, ensure that wind energy conversion system has stable rotating speed and output power and Security.
A kind of device controlling pneumatic equipment blades made load and deformation disclosed in the utility model, comprises free rotary type blade, rudder face, rudder face drive unit.Pneumatic equipment blades made is the carrier of the device installing this control pneumatic equipment blades made load and deformation, and free rotary type blade is installed to pneumatic equipment blades made top by the first revolute pair, and the first revolute pair axis is perpendicular to the cross section of pneumatic equipment blades made; Rudder face is arranged on free rotary type trailing edge by the second revolute pair, the axis being parallel of the first revolute pair and the second revolute pair.
As the further improvement of technique scheme, described rudder face drive unit is steering wheel, and be arranged on free rotary type blade interior, rudder face is connected to steering wheel by drive link.Steering wheel is embedded in free rotary type blade instead of is arranged on free rotary type blade surface, is smooth, nothing projection in order to ensure free rotary type blade surface.Steering wheel drives rudder face angle to change rapidly by drive link, changes the aerodynamic configuration of free rotary type blade, thus changes surface pressure distribution and the aerodynamic characteristic of free rotary type blade.When high wind speed, there is higher aerodynamic brake function, the load of wind energy conversion system can be cut down, stablize output power; When low wind speed, there is the function improving wind speed round, reduce threshold wind velocity, level and smooth output power.The rotational angle range that rudder face rotates relatively freely the formula blade string of a musical instrument is-30 ° ~+30 °.
Another kind as such scheme improves, described first revolute pair comprises rotating shaft and rotating shaft fixing device, rotating shaft one end is arranged in rotating shaft fixing device, rotating shaft can phase countershaft fixing device be rotated, namely free rotary type blade freely can rotate around this shaft axis, and rotational angle range is-180 ° ~+180 °.Rotating shaft is fixedly connected with free rotary type blade, and rotating shaft fixing device is fixedly mounted on pneumatic equipment blades made inside, or rotating shaft is fixedly connected with pneumatic equipment blades made, and rotating shaft fixing device is fixedly mounted on free rotary type blade interior.
As the further improvement of technique scheme, described second revolute pair is hinge.
Improving further again as technique scheme, the device of described control pneumatic equipment blades made load and deformation also comprises damper regulator, and damper regulator countershaft applies damping.
Improving further again as technique scheme, described damper regulator is provided with locking device, for locking rotating shaft.
Improving further again as technique scheme, described free rotary type blade 5 radial length is 5% ~ 50% of pneumatic equipment blades made radial length, its plane shape is flat form or sharpening form, and the sectional shape on the sectional shape of free rotary type blade near that one end of pneumatic equipment blades made and pneumatic equipment blades made top matches.
Improving further again as technique scheme, the position of rotating shaft is near pneumatic equipment blades made leading edge.
Improving further again as technique scheme, described rudder face is tangential is of a size of free rotary type chord of blade to 10% ~ 30% of size.
Another kind as technique scheme improves, and the device controlling pneumatic equipment blades made load and deformation also comprises the closed loop control system of origin flux detector, airborne processor, control system and wind energy conversion system operating condition prober composition.Closed-loop feedback control system is for monitoring incoming flow wind speed, wind direction and wind energy conversion system running state, and can automatically send control signal to the steering wheel in free rotary type blade according to incoming flow situation and wind energy conversion system state, realize closed-loop feedback to control, without the need to human intervention and operation.
The device of control pneumatic equipment blades made load and deformation of the present utility model, controls the flow field state of pneumatic equipment blades made tip segment, thus realizes following beneficial effect:
1, the angle of rudder face is utilized to change, the angle of attack that can change free rotary type blade and come between flow path direction, thus the aerodynamic loading of adjustment blade: at low wind speeds, the actual angle of attack of free rotary type blade can be increased, increase the lift suffered by primary blades and torque, stablize the generated output of wind energy conversion system; Under high wind speed, the actual angle of attack of free rotary type blade can be reduced, reduce lift and the torque of primary blades, cut down the load of impeller.Because the distortion of blade and blade tip load are proportionate, reduce the aerodynamic loading of blade tip, effectively can suppress the distortion of primary blades.
2, controlled by the independence of each blade upper controller, the problem that the upper and lower blade loading of pneumatic equipment blades made that causes due to atmospheric boundary layer is inconsistent can be overcome, be conducive to the stable of wind turbine impeller rotating speed and reduce dynamic unbalance.
3, without the need to the mechanical actuation mechanism of complexity, only need a steering wheel and drive link to drive control surface deflection, its power consumption is very small.
4, free rotary type blade has very high dynamic response rate, can realize load and cut down and Deformation control within the very short time.
5, the dynamic response rate of free rotary type blade can be adjusted by damper regulator, with the demand for control under satisfied different operating mode.When not needing to control, can lock, forming overall pneumatic equipment blades made.
6, closed-loop feedback control system is utilized to realize the intelligent control of full operating envelope, without the need to artificial pro-active intervention and control.
7, this control gear may be used for becoming oar wind energy conversion system, can also be used for determining oar wind energy conversion system, have good versatility.
The utility model application area is comparatively wide, necessarily can reequip on the business pneumatic equipment blades made of existing maturation.The funds not only saving the valuable time and again research and develop, the aeroperformance of pneumatic equipment blades made under different operating mode can also be improved, stablize the output power of wind energy conversion system under different incoming flow wind speed, expand the operating envelope of wind energy conversion system, be conducive to the annual electricity generating capacity increasing wind energy conversion system, also increase the Security of blade and relevant device.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that the device of the utility model control pneumatic equipment blades made load and deformation is arranged on pneumatic equipment blades made;
Fig. 2 is the device enlarged view that the utility model controls pneumatic equipment blades made load and deformation;
Fig. 3 is the cross section view that the utility model controls the device of pneumatic equipment blades made load and deformation;
Fig. 4 is the device operating diagram that the utility model controls pneumatic equipment blades made load and deformation;
Fig. 5 is closed loop control system control flow chart.
Embodiment
Below in conjunction with accompanying drawing, a kind of device controlling pneumatic equipment blades made load and deformation that the utility model proposes is described in detail.
As shown in Figure 1,2 and 3, a kind of device controlling pneumatic equipment blades made load and deformation, comprises damper regulator 2, rotating shaft fixing device 3, rotating shaft 4, free rotary type blade 5, rudder face 7, steering wheel 6, drive link 8, hinge 9.Free rotary type blade 5 radial length is 5% ~ 50% of pneumatic equipment blades made 1 radial length, determines the radial length of free rotary type blade 5 according to factors such as the length of Environmental Conditions, pneumatic equipment blades made 1.Its plane shape is flat form or sharpening form, the sectional shape of free rotary type blade 5 and the sectional shape on pneumatic equipment blades made 1 top match, and free rotary type blade 5 is consistent near the cross section chord length of pneumatic equipment blades made 1 and the cross section chord length on pneumatic equipment blades made 1 top.
Free rotary type blade 5 is installed to pneumatic equipment blades made 1 top by rotating shaft 4 and rotating shaft fixing device 3, rotating shaft 4 one end is arranged in rotating shaft fixing device 3, rotating shaft 4 can phase countershaft fixing device 3 be rotated, rotating shaft 4 is fixedly connected with free rotary type blade 5, can look as a whole, it is inner that rotating shaft fixing device 3 is arranged on pneumatic equipment blades made 1, free rotary type blade 5 freely can rotate around the axis of the cross section perpendicular to pneumatic equipment blades made 1 with rotating shaft 4, and its rotational angle range is-180 ° to 180 °.Or rotating shaft 4 is fixedly connected with pneumatic equipment blades made 1, it is inner that rotating shaft fixing device 3 is arranged on free rotary type blade 5.The axes normal of rotating shaft 4 is in the cross section of pneumatic equipment blades made 1, and the position of rotating shaft 4 is near pneumatic equipment blades made 1 leading edge, and rotating shaft 4 central position is positioned on the string of a musical instrument of free rotary type blade profile, the position of preferred distance leading edge 15% chord length.Rotating shaft fixing device 3 can select bearing or other revolute pair devices.
Rudder face 7 is arranged on free rotary type blade 5 on one side by hinge 9, and rudder face 7 is tangential is of a size of 10% ~ 30% of the tangential size of free rotary type blade 5, and preferably 20%.The axis being parallel of rotating shaft 4 and hinge 9, namely free rotary type blade 5 relative to pneumatic equipment blades made 1 rotate around axis and rudder face 7 relative to free rotary type blade 5 rotate around axis parallel in space.As shown in Figure 2, it is inner that steering wheel 6 is arranged on free rotary type blade 5, and rudder face 7 is connected to steering wheel 6 by drive link 8.Steering wheel 6 drives drive link 8 to produce change in displacement, thus drives rudder face 7, around hinge 9, the change of continuous print angle occurs.The rotational angle range that rudder face 7 rotates relatively freely the string of a musical instrument of formula blade 5 is-30 ° ~ 30 °.Steering wheel 6 also can be replaced with motor or fluid pressure drive device, for driving rudder face 7.
Damper regulator 2 is sleeved in rotating shaft 4, is positioned at that one end near rotating shaft fixing device 3.Damper regulator 2 also can be arranged on rotating shaft 4 side, as long as apply damping can to rotating shaft 4.The mode that damping produces can be mechanical damping, electromagnetic damping or other dampings.
Damper regulator 2 is provided with locking device, when needs, applies enough large frictional force (or damping) can to rotating shaft 4, make rotating shaft 4 relatively pneumatic equipment blades made 1 or free rotary type blade 5 cannot produce rotational motion.Locking device is embedded among damper regulator 2, can be controlled unlatching and the release of locking device by control system 12, and the time length of locking.The way of realization of locking device comprises hydraulic locking cylinder, mechanical pin, self-locking motor etc.
The device controlling pneumatic equipment blades made load and deformation also comprises the closed loop control system of origin flux detector 10, airborne processor 11, control system 12 and wind energy conversion system operating condition prober 13 composition.As shown in Figure 5, carry out flux detector 10 as wind speed incoming flow monitoring equipment, be installed in the correct position on wind energy conversion system.Carry out the Real-time Monitoring Data of flux detector 10 and wind energy conversion system operating condition prober 13, be sent to the airborne processor 11 on wind energy conversion system, after Treatment Analysis, be transferred to control system 12, again by control system 12 by wired, wireless, bluetooth or other signal transmission form, control signal is transferred to the steering wheel 6 on free rotary type blade 5, carries out pneumatic equipment blades made 1 load and deformation and control.And wind energy conversion system operating condition prober 13 also constantly feeds back the working state of wind energy conversion system to airborne processor 11.
The working procedure of the device of control pneumatic equipment blades made load and deformation of the present utility model is as follows:
As shown in Figure 4, for large wind speed bad working environments, after carrying out flux detector 10 and finding that wind speed and direction is beyond safety range, by timely announcement machine borne processor 11, airborne processor 11, after compare of analysis, confirms to perform an action, corresponding control command is sent by control system 12, steering wheel 6, after receiving control command, drives rudder face 7 to deflect around hinge 9 by drive link 8, makes to produce an angle δ between rudder face 7 and free rotary type blade 5.Now, because the external shape of free rotary type blade 5 there occurs change, blade surface pressure distribution changes.The blade of free rotary type blade 5 rotates around the axis under the effect of aerodynamical moment, and is finally stabilized in an equilibrium position, and the angle now between free rotary type blade 5 and pneumatic equipment blades made 1 expands as Θ.
Now, although the angle of attack between pneumatic equipment blades made 1 and incoming flow also remains on α, but the angle of attack between free rotary type blade 5 and incoming flow is reduced to α ', free rotary type blade 5 is from original positive lift force state vanishing lift even negative lift state, thus weaken the positive lift force of whole pneumatic equipment blades made 1 and the moment loading to root of blade, play the effect that load is cut down, also reduce the rotational velocity of wind wheel simultaneously, make it be stabilized in range of safety operation, reduce the requirement to structural strength and rigidity.Further, the reduction of flight force and moment suffered by pneumatic equipment blades made 1, the amount of deformation of its blade also can correspondingly reduce, and avoids the collision problem of blade-pylon.
At low wind speeds, control system 12 sends instruction and adjusts rudder face 7 to steering wheel 6, and free rotary type blade 5 is rotated under aerodynamical moment effect, increases and carrys out the angle of attack α between flow path direction, thus increase the available lift of free rotary type blade 5, namely add the moment that drives impeller rotates.Not only ensure that pneumatic equipment blades made 1 pneumatic efficiency under little wind conditions can not reduce, and can also start wind energy conversion system at a lower wind speed reposefully.
Claims (10)
1. control a device for pneumatic equipment blades made load and deformation, it is characterized in that: comprise free rotary type blade (5), rudder face (7), rudder face drive unit; Free rotary type blade (5) is installed to pneumatic equipment blades made (1) top by the first revolute pair, and the first revolute pair axis is perpendicular to the cross section of pneumatic equipment blades made (1); Rudder face (7) is arranged on free rotary type blade (5) trailing edge by the second revolute pair, the axis being parallel of the first revolute pair and the second revolute pair.
2. the device of control pneumatic equipment blades made load and deformation according to claim 1, it is characterized in that: described rudder face drive unit is steering wheel (6), be arranged on free rotary type blade (5) inner, rudder face (7) is connected to steering wheel (6) by drive link (8).
3. the device of control pneumatic equipment blades made load and deformation according to claim 1, it is characterized in that: described first revolute pair comprises rotating shaft (4) and rotating shaft fixing device (3), rotating shaft (4) one end is arranged in rotating shaft fixing device (3), and rotating shaft (4) can phase countershaft fixing device (3) be rotated; Rotating shaft (4) is fixedly connected with free rotary type blade (5), and it is inner that rotating shaft fixing device (3) is fixedly mounted on pneumatic equipment blades made (1); Or rotating shaft (4) is fixedly connected with pneumatic equipment blades made (1), it is inner that rotating shaft fixing device (3) is fixedly mounted on free rotary type blade (5).
4. the device of control pneumatic equipment blades made load and deformation according to claim 1, is characterized in that: described second revolute pair is hinge (9).
5. the device of control pneumatic equipment blades made load and deformation according to claim 3, is characterized in that: the device of described control pneumatic equipment blades made load and deformation also comprises damper regulator (2), and damper regulator (2) countershaft (4) applies damping.
6. the device of control pneumatic equipment blades made load and deformation according to claim 5, is characterized in that: (2) are provided with locking device with described damper regulator, for locking rotating shaft (4).
7. the device of control pneumatic equipment blades made load and deformation according to claim 1, it is characterized in that: described free rotary type blade (5) radial length is 5% ~ 50% of pneumatic equipment blades made (1) radial length, its plane shape is flat form or sharpening form, and free rotary type blade (5) matches near the sectional shape of pneumatic equipment blades made (1) that one end and the sectional shape on pneumatic equipment blades made (1) top.
8. the device of control pneumatic equipment blades made load and deformation according to claim 3, is characterized in that: the position of rotating shaft (4) is near pneumatic equipment blades made (1) leading edge.
9. the device of control pneumatic equipment blades made load and deformation according to claim 1, is characterized in that: described rudder face (7) is tangential is of a size of 20% of the tangential size of free rotary type blade (5).
10. the device of the control pneumatic equipment blades made load and deformation according to claim 1,2,3,4,5,6,7,8 or 9 any one, is characterized in that: the device controlling pneumatic equipment blades made load and deformation also comprises the closed loop control system that origin flux detector (10), airborne processor (11), control system (12) and wind energy conversion system operating condition prober (13) form.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409769.4U CN204024906U (en) | 2014-07-24 | 2014-07-24 | A kind of device controlling pneumatic equipment blades made load and deformation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420409769.4U CN204024906U (en) | 2014-07-24 | 2014-07-24 | A kind of device controlling pneumatic equipment blades made load and deformation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234929A (en) * | 2014-07-24 | 2014-12-24 | 南京航空航天大学 | Device for controlling loading and deformation of wind turbine blade |
| WO2016019467A1 (en) * | 2014-08-05 | 2016-02-11 | Ryan Church | Structure with rigid winglet adapted to traverse a fluid environment |
| US10578076B2 (en) | 2014-08-05 | 2020-03-03 | Ryan Church | Fluid-redirecting structure |
| US10690110B2 (en) | 2014-08-05 | 2020-06-23 | Ryan Church | Structure with rigid projections adapted to traverse a fluid environment |
-
2014
- 2014-07-24 CN CN201420409769.4U patent/CN204024906U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234929A (en) * | 2014-07-24 | 2014-12-24 | 南京航空航天大学 | Device for controlling loading and deformation of wind turbine blade |
| WO2016011833A1 (en) * | 2014-07-24 | 2016-01-28 | 南京航空航天大学 | Apparatus for controlling load and deformation of wind turbine blade |
| CN104234929B (en) * | 2014-07-24 | 2017-11-07 | 南京航空航天大学 | It is a kind of to control pneumatic equipment bladess load and the device of deformation |
| WO2016019467A1 (en) * | 2014-08-05 | 2016-02-11 | Ryan Church | Structure with rigid winglet adapted to traverse a fluid environment |
| US10578076B2 (en) | 2014-08-05 | 2020-03-03 | Ryan Church | Fluid-redirecting structure |
| US10690110B2 (en) | 2014-08-05 | 2020-06-23 | Ryan Church | Structure with rigid projections adapted to traverse a fluid environment |
| US10781789B2 (en) | 2014-08-05 | 2020-09-22 | Biomerenewables Inc. | Structure with rigid winglet adapted to traverse a fluid environment |
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Granted publication date: 20141217 Effective date of abandoning: 20171107 |
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