CN102536684A - Centrifugal variable pitch speed stabilizing hub for small-sized wind driven generator - Google Patents
Centrifugal variable pitch speed stabilizing hub for small-sized wind driven generator Download PDFInfo
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- CN102536684A CN102536684A CN2012100299601A CN201210029960A CN102536684A CN 102536684 A CN102536684 A CN 102536684A CN 2012100299601 A CN2012100299601 A CN 2012100299601A CN 201210029960 A CN201210029960 A CN 201210029960A CN 102536684 A CN102536684 A CN 102536684A
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- generator
- blade shaft
- wind wheel
- wind
- torsion spring
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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 centrifugal variable pitch speed stabilizing hub for a small-sized wind driven generator. The hub comprises a blade shaft, a gear, a wind wheel disc, a synchronous ring, a centrifugal heavy hammer, a screw rod and a reset torsion spring, and is characterized in that: the blade shaft is arranged on the wind wheel disc through a bearing; the axis of the blade shaft is not intersected with the axis of the wind wheel disc but is deviated from the axis of the wind wheel disc for a certain distance, and the extended end of the blade shaft is fixedly connected with blades; the blade shaft is fixedly provided with the gear; the synchronous ring engaged with the gear is sleeved on the wind wheel disc; the heavy hammer is fixed on the blade shaft through the screw rod; and the torsion spring is sleeved on the blade shaft. The hub has a simple and reliable structure; the blade shaft is driven to rotate by the screw rod under the action of centrifugal force of the heavy hammer when the generator is overspeed under the action of various wind speeds and loads; the blade shaft is reset by the torsion spring when the rotating speed of the generator is reduced; under the combined action of the heavy hammer and the torsion spring, the rotating speed of the generator is stabilized by keeping an appropriate incidence angle of each blade; and influences on the rotating speed of the generator due to the change of wind speeds or generator loads are reduced, so that the generator outputs stable voltage.
Description
Technical field
The present invention relates to the wind power plant field, be mainly used in middle-size and small-size wind-driven generator, according to the variation of generator speed, the propeller pitch angle of adjusting wind wheel blade automatically comes constant wind power generator rotating speed, and generator is operated in the speed range of regulation.
Background technique
The existing horizontal axis design of mini wind-driven generator that adopts below 20 kilowatts, its generator shaft is parallel to wind direction, and blade generally is fixedly mounted on the wind wheel dish; Therefore; The propeller pitch angle of blade immobilizes, and the blade wind loading rating of this generator simple in structure is poor, meets to surpass the strong wind that allows work wind speed; Generally be to adopt the head lateral deviation to reduce stressed maybe the need, otherwise generator is prone to hypervelocity damage or blade broken by producer's requirements generation outage of braking.
Summary of the invention
The objective of the invention is to design a kind of wind-power electricity generation function that makes and be operated in the small-sized wind power generator centrifugal variation paddle speed stabilizing wheel hub under the rated speed stably.
The scheme of technical solution problem of the present invention is; Small-sized wind power generator centrifugal variation paddle speed stabilizing wheel hub comprises blade, sharf, gear, wind wheel dish, synchronous circle, weight, screw mandrel and torsion spring, and sharf passes through Bearing Installation on the wind wheel dish; Its axis and wind wheel main axis deflect away from certain distance; Its external part and blade are connected, and are fixed with gear on the sharf, with the synchronous snare of gear engagement on wind wheel dish collar bush; Weight is fixed on gear and the sharf through screw mandrel; Also be with torsion spring on the sharf, weight drives sharf through screw mandrel and rotates under the effect of motor ultracentrifugation power, and torsion spring resets sharf when motor speed decline weight centrifugal force reduces.Weight and torsion spring acting in conjunction make blade remain on the more suitable angle of attack.
It is characterized in that; The axis of the axis of sharf and wind wheel dish is non-intersect but deflect away from certain distance; Be with synchronous circle on the front diameter of axle of wind wheel dish; Fixing gear engagement on circle and the sharf is passed through the fixing secondary weight of screw mandrel, the centrifugal force that weight produces on the sharf when relying on the rotation of wind wheel dish on each sharf synchronously; With torsion spring elastic force acting in conjunction on each sharf control sharf rotation angle, and through synchronous circle be engaged with gear and make each sharf keep rotating synchronously the propeller pitch angle of adjustment fan blade.
Advantage of the present invention is; Simple in structure, reliable; Need not provide under the situation of external control, adjust the fan blade propeller pitch angle automatically, change fan blade and pass to the purpose that the torque of generator reaches the stable generator rotating speed thereby drive the centrifugal force that the weight rotation produced through wind wheel.
Square being directly proportional of centrifugal force that weight is produced when wheel disc with the wind rotates and rotating speed, therefore, the increase of rotating speed can make the centrifugal force of weight increase rapidly; Quality through the adjustment weight and with the distance of sharf, motor is limited under certain rotating speed, effectively controlled the generation of generator runaway accident; Reach the purpose that limits generator speed; When high wind, also can normally move generating, needn't artificially brake or the parking of deflection head, improve wind energy utilization.When strong gusts of wind was arranged, suitably the fan blade of biasing can be because the synchronous deflection several angle of effect of strong wind weakens the impulse force of strong gusts of wind equally, and the protection fan blade can not fracture.
Description of drawings:
Fig. 1 is the structural representation under the positive state of rest of the present invention, and all the other fan blades of part of only drawing a slice fan blade among the figure omit.
Fig. 2 is the structural representation that state of rest downside of the present invention is analysed and observe.
Fig. 3 is that the present invention is positive, the maximal work positional structure schematic representation when propeller pitch angle is adjusted to maximum, and all the other fan blades of part of only drawing a slice fan blade among the figure omit.
Fig. 4 is the propeller pitch angle of the present invention structural representation that analyse and observe the side when being adjusted to the greatest limit working position.
Embodiment:
(Fig. 1) on wind wheel dish 1, the axis of the axis of sharf 4 and wind wheel dish 1 is non-intersect but deflect away from certain distance, and even distribution identical with fan blade 2 quantity through Bearing Installation for sharf 4; Weight 7 can be made up of the polylith metal, so that adjust its weight as required, weight 7 is fixed on an end of screw mandrel 11 by (Fig. 2) nut 12; The other end of screw mandrel 11 is fixed on the sharf 4; (Fig. 3) gear 10 is fixed on the sharf 4 and meshes with the ring tooth that encloses synchronously on 17, encloses 17 synchronously and is enclosed within on the positive aperture of wind wheel dish 1, and torsion spring 14 is enclosed within on the sharf 4; One is pressed on the support 15 that is fixed on the wind wheel dish 1, and screw mandrel 11 is hooked in the other end.
During work, fan blade 2 stressed beginning that facing the wind rotated, and at this moment, the propeller pitch angle of fan blade 2 is initial propeller pitch angle, and when wind speed becomes big when surpassing the proper functioning wind speed, the power that fan blade 2 obtains strengthens, and wind wheel dish 1 rotating speed increases; At this moment, weight 7 rotate with wind wheel dish 1 synchronously, because square being directly proportional of the centrifugal force of rotation generation and rotating speed; So the centrifugal force that this moment, weight 7 rotations were produced increases sharply; This centrifugal force turns an angle sharf 4 through the active force that screw mandrel 11 overcomes torsion spring 14, makes fan blade 2 propeller pitch angles become big, has reduced the wind-exposuring area of fan blade 2; Fan blade 2 stressed reducing, rotating speed descends and is equilibrated under the metastable rotating speed.When wind speed decreased, fan blade 2 is stressed to reduce to make wind wheel dish 1 rotating speed to descend, and the centrifugal force that weight 7 produces diminishes; Under the effect of torsion spring 14, reset, fan blade 2 propeller pitch angles diminish, and the wind-exposuring area of fan blade 2 increases; Wind wheel dish 1 rotating speed is increased, is fixed on gear 10 deflections simultaneously on each sharf 4, thus through with the restriction of the synchronous circle 17 of gear 10 engagements; Guarantee that each sharf 4 rotates synchronously, makes the propeller pitch angle of each fan blade 2 be consistent.During work, no matter be that wind speed changes or generator load changes wind wheel dish 1 change in rotational speed that causes, under the effect of this mechanism, can both make the rotating speed of generator become steady relatively, the output voltage fluctuation is less.
Claims (1)
1. small-sized wind power generator centrifugal variation paddle speed stabilizing wheel hub; Mainly form by sharf (4), gear (10), wind wheel dish (1), synchronous circle (17), screw mandrel (11), weight (7), torsion spring (14) and support (15); Sharf (4) is installed on the wind wheel dish (1) through the bearing five equilibrium; An overhanging end is fan blade (2) fixedly; Middle part cover torsion spring (14) and gear (10), each gear (10) and synchronous circle (17) engagement that is enclosed within on the axle of wind wheel dish (1) hole, weight (7) also is installed on the sharf (4) through screw mandrel (11); It is characterized in that the axis of the axis of sharf (4) and wind wheel dish (1) is non-intersect but deflect away from certain distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100299601A CN102536684A (en) | 2012-02-11 | 2012-02-11 | Centrifugal variable pitch speed stabilizing hub for small-sized wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100299601A CN102536684A (en) | 2012-02-11 | 2012-02-11 | Centrifugal variable pitch speed stabilizing hub for small-sized wind driven generator |
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| CN102536684A true CN102536684A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100299601A Pending CN102536684A (en) | 2012-02-11 | 2012-02-11 | Centrifugal variable pitch speed stabilizing hub for small-sized wind driven generator |
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| CN (1) | CN102536684A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481812A (en) * | 2014-12-05 | 2015-04-01 | 周进 | Wind generator |
| CN105240214A (en) * | 2015-11-13 | 2016-01-13 | 天津瑞源电气有限公司 | Safety circuit for overspeed protection of wind turbine generating set |
| CN104295440B (en) * | 2014-10-21 | 2017-01-11 | 张效新 | Single-frame type impeller of wind turbine |
| CN110030154A (en) * | 2017-09-25 | 2019-07-19 | 青岛兰道尔空气动力工程有限公司 | A kind of resilient movement steering system |
| CN110454326A (en) * | 2019-08-16 | 2019-11-15 | 建水恒诚新能源有限公司 | It is centrifuged the poly- power formula efficient wind energy power device of self-balancing |
| CN112610409A (en) * | 2021-01-12 | 2021-04-06 | 王恩芽 | Speed-stabilizing and propeller-changing type wind driven generator |
| CN117554023A (en) * | 2024-01-11 | 2024-02-13 | 中国航空工业集团公司哈尔滨空气动力研究所 | Automatic propeller pitch-changing device for propeller test in wind tunnel |
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| EP0043872A1 (en) * | 1980-07-10 | 1982-01-20 | Paul Hayen | Pitch regulation device for the rotor vanes of a windmill |
| CN2782976Y (en) * | 2005-01-07 | 2006-05-24 | 曹海珠 | Automatic vane adjusting speed limiter for small wind driven power generator |
| CN201339543Y (en) * | 2008-12-25 | 2009-11-04 | 浙江华鹰风电设备有限公司 | Passive pitch-controlled wind-powered generator |
| CN201474857U (en) * | 2009-04-25 | 2010-05-19 | 章红涛 | Automatic propeller pitch angle adjustment steady speed device for miniature power generator |
| CN101975143A (en) * | 2010-11-19 | 2011-02-16 | 宁波锦浪新能源科技有限公司 | Stabilized-speed pitch control device of wind-driven generator |
| CN202348566U (en) * | 2011-09-19 | 2012-07-25 | 章红涛 | Centrifugal blade-adjusting and speed-stabilizing device of small-type wind turbine generator |
-
2012
- 2012-02-11 CN CN2012100299601A patent/CN102536684A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0043872A1 (en) * | 1980-07-10 | 1982-01-20 | Paul Hayen | Pitch regulation device for the rotor vanes of a windmill |
| CN2782976Y (en) * | 2005-01-07 | 2006-05-24 | 曹海珠 | Automatic vane adjusting speed limiter for small wind driven power generator |
| CN201339543Y (en) * | 2008-12-25 | 2009-11-04 | 浙江华鹰风电设备有限公司 | Passive pitch-controlled wind-powered generator |
| CN201474857U (en) * | 2009-04-25 | 2010-05-19 | 章红涛 | Automatic propeller pitch angle adjustment steady speed device for miniature power generator |
| CN101975143A (en) * | 2010-11-19 | 2011-02-16 | 宁波锦浪新能源科技有限公司 | Stabilized-speed pitch control device of wind-driven generator |
| CN202348566U (en) * | 2011-09-19 | 2012-07-25 | 章红涛 | Centrifugal blade-adjusting and speed-stabilizing device of small-type wind turbine generator |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295440B (en) * | 2014-10-21 | 2017-01-11 | 张效新 | Single-frame type impeller of wind turbine |
| CN104481812A (en) * | 2014-12-05 | 2015-04-01 | 周进 | Wind generator |
| WO2016086443A1 (en) * | 2014-12-05 | 2016-06-09 | 周进 | Wind power generator |
| CN104481812B (en) * | 2014-12-05 | 2017-10-10 | 周进 | Wind-driven generator |
| CN105240214A (en) * | 2015-11-13 | 2016-01-13 | 天津瑞源电气有限公司 | Safety circuit for overspeed protection of wind turbine generating set |
| CN110030154A (en) * | 2017-09-25 | 2019-07-19 | 青岛兰道尔空气动力工程有限公司 | A kind of resilient movement steering system |
| CN110454326A (en) * | 2019-08-16 | 2019-11-15 | 建水恒诚新能源有限公司 | It is centrifuged the poly- power formula efficient wind energy power device of self-balancing |
| CN110454326B (en) * | 2019-08-16 | 2020-11-27 | 建水恒诚新能源有限公司 | Centrifugal self-balancing force-gathering type efficient wind power device |
| CN112610409A (en) * | 2021-01-12 | 2021-04-06 | 王恩芽 | Speed-stabilizing and propeller-changing type wind driven generator |
| CN117554023A (en) * | 2024-01-11 | 2024-02-13 | 中国航空工业集团公司哈尔滨空气动力研究所 | Automatic propeller pitch-changing device for propeller test in wind tunnel |
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| PB01 | Publication | ||
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Application publication date: 20120704 |