CN203404019U - Vertical-axis generator blade with flow-chocking braking function - Google Patents
Vertical-axis generator blade with flow-chocking braking function Download PDFInfo
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- CN203404019U CN203404019U CN201320356802.7U CN201320356802U CN203404019U CN 203404019 U CN203404019 U CN 203404019U CN 201320356802 U CN201320356802 U CN 201320356802U CN 203404019 U CN203404019 U CN 203404019U
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- blade
- choked flow
- vertical
- spoiler
- flow
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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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Abstract
A vertical-axis generator blade with a flow-chocking braking function is provided. The vertical-axis generator blade with the flow-chocking braking function comprises a frame and an envelope coated on the outer side of the frame. The vertical-axis generator blade is characterized in that unfoldable and foldable flow-chocking movable leaves are arranged on the blade; one side edge of each flow-chocking movable leaf is hinged with the frame of the blade; and the flow-chocking movable leaves are connected with a control device. The vertical-axis generator blade of the utility model is provided with the unfoldable and foldable flow-chocking movable leaves; when a generator operates at a normal wind speed, the flow-chocking movable leaves are closed; when a wind speed is too high, and braking speed reduction is required to be adopted, the control mechanism is utilized to open the flow-chocking movable leaves, and therefore, the structural shape of the blade changes, a wind resisting surface of the blade is increased, and the flow direction of air can be disturbed, and an auxiliary braking effect can be realized; and further, the tail portion of the blade is provided with a spoiler which can be folded automatically according to a wind speed, when the wind speed is high, the spoiler is folded, and the chord length of the blade becomes shorter, and a wind receiving surface of the blade becomes smaller, and therefore, an auxiliary speed reduction braking effect can be also realized, and with the spoiler adopted, automatic control of the rotation speed of the generator in a relatively stable range can be benefitted.
Description
Technical field
The utility model relates to a kind of wind generating unit, especially for the blade with choked flow braking function of H type vertical axis aerogenerator, belongs to technical field of wind power generation.
Background technique
Along with the increase of energy and environment pressure, clean renewable new energy more and more come into one's own.In all kinds of green energy resources, wind energy is one of renewable energy sources of having a high potential of prospect, applies further extensive.Wind-driven generator is divided into horizontal axis and vertical shaft according to main shaft installation position, in recent years, vertical-axis generators technical development is rapid, vertical-axis generators can be passed through the optimal design to blade structure, increase wind resistance, improve wind resistance poor, even if make blower fan still can normally start operation under lower wind speed, without driftage, change sizing device, thereby structure is relatively simple.The rotary main shaft of H type vertical-axis generators vertically arranges, and rotary main shaft is connected with blade by oblique arm or cross bar and drag-line, and its blade is prismatic blade, and blade is parallel to newel, is distributed in rotary main shaft periphery.Vertical axis aerogenerator, when wind speed is larger, need to be enabled braking device and control its rotating speed, makes it can not surpass the rated speed of wind-driven generator, avoids the danger of driving.Small-size vertical axis wind turbine is normally controlled rotating speed by disc brake device, but the control for its rotating speed of large-scale vertical wind-driven generator is very just difficulty, especially when wind speed is high and change when large, only rely on the electromagnetic resistance of disc brake device to be difficult to reach brake requirement, this problem has become restriction vertical axis aerogenerator to the bottleneck of large scale development.
Model utility content
The utility model provides a kind of vertical-axis generators blade with choked flow braking function that utilizes mechanical device auxiliary generator skidding for overcoming the defect of prior art.
The alleged problem of the utility model is solved by following technological scheme:
A kind of vertical-axis generators blade with choked flow braking function, it comprises framework and is coated on the covering in framework outside, its specialization is: described blade is provided with and can opens, fan is lived in closed choked flow, the framework of described choked flow fan alive one side and blade is hinged, and choked flow is lived in fanning and connected control device.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, described choked flow is lived, and fanning is lived in fanning by two that lay respectively on two sides of blade first choked flows of opening round about fans alive and the second choked flow forms; Described control device comprises motor, running shaft, two row's driveshafts and two row's connecting rods, described motor is fixed on the framework place of blade, the transmission of motor output shaft band is connected with transmission of rotary axis, two row's driveshafts distribute on running shaft, wherein, the affixed running shaft in one end of each driveshaft, the other end respectively one end of each connecting rod corresponding with its position are hinged, and the described the other end of respectively arranging connecting rod is hinged with corresponding the first choked flow fan or the second choked flow fan of living of living respectively.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, the afterbody of blade arranges spoiler, and spoiler is turnover structure, and the framework of spoiler one side and blade is hinged, and spoiler and blade connection part are provided with several torsion springs.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, the height dimension of described choked flow fan alive mates with the height dimension of blade.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, described choked flow fan alive intermittently arranges along the short transverse of blade.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, described choked flow is lived and is fanned the intermediate portion that is arranged on blade height direction.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, described blade chord length is L, live articulated position to the front end distance D of chord of blade length direction of fan and blade frame of described choked flow is 1/4L, choked flow live fan opening end to the distance B of blade front end be 1/2L.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, the length C of described spoiler is 1/4L-1/5L.
The above-mentioned vertical-axis generators blade structure with choked flow braking function, the turnover direction of described spoiler is identical with the sense of rotation of blade.
The utility model is for a kind of choked flow braking blade that solved large-scale vertical wind-driven generator skidding Design of Problems, and described blade is provided with and can opens, fan is lived in closed choked flow.When generator turns round under normal wind speed, choked flow is lived fan in closed condition, and now blade is identical with the performance of common blade; When wind speed is too high while need adopting braking deceleration, utilize operating-controlling mechanism that the choked flow fan of living is opened, the structure shape of blade changes, and the choke face of blade increases, and upsets air flow, plays the effect of auxiliary braking.The spoiler that the afterbody setting of this external blade can turn down automatically according to wind speed, when wind speed is larger, spoiler turnover, blade chord length shortens, blade windward side diminishes, can play assisted deceleration braking action equally, the setting of spoiler also helps the rotating speed of generator is controlled in a metastable scope automatically.The utility model utilizes the variation of this body structure of blade to play skidding effect, and it is skillfully constructed, and for solving large-scale vertical wind-driven generator braking problem, provides feasible scheme.
Accompanying drawing explanation
Fig. 1 is that blade choked flow described in the utility model fan alive is opened, the schematic diagram of spoiler turnover state;
Fig. 2 is that blade choked flow described in the utility model fan alive is opened, the schematic diagram of spoiler extended configuration;
Fig. 3 is that blade choked flow described in the utility model fan alive is closed, the schematic diagram of spoiler turnover state;
Fig. 4 is that blade choked flow described in the utility model fan alive is closed, the schematic diagram of spoiler extended configuration;
Fig. 5 is the schematic diagram that blade choked flow described in the utility model fan alive is arranged on the intermediate portion of blade height direction;
Fig. 6 is that blade choked flow described in the utility model is lived fan along the interrupted schematic diagram arranging of blade height direction;
Fig. 7 is the partial enlarged view at Fig. 2 A place;
Fig. 8 is control device kinematic sketch;
Fig. 9 is that the utility model blade is used view.
Number in the figure implication is as follows: 1. blade; 2. choked flow is lived and is fanned; 2-1. the first choked flow is lived and is fanned; 2-2. the second choked flow is lived and is fanned; 3. spoiler; 4. motor; 5. band transmission; 6. running shaft; 7. driveshaft; 8. connecting rod; 9. torsion spring; 10. hound; 11. blower fan rotary main shafts.
Embodiment
Referring to Fig. 1, the utility model blade is for H type vertical axis aerogenerator or V-type vertical axis aerogenerator, and described blade 1 comprises framework and is coated on the covering in framework outside.Blade 1 is provided with and can opens, the choked flow of closure fan 2 alive, and the framework of choked flow fan alive one side and blade is hinged, and alive the fanning by two that are positioned on blade bi-side the first choked flows fan alive 2-1 that open round about and the second choked flow 2-1 of fanning alive of choked flow forms.Choked flow is lived in fanning and is connected control device, is controlled the on-off action of choked flow fan alive by control device.
Referring to Fig. 1, Fig. 8, described control device comprises motor 4, running shaft 6, two row's driveshafts 7 and two row's connecting rods 8, and motor is fixed on the framework place of blade, and motor output shaft band transmission 5 is in transmission connection with running shaft 6, and two row's driveshafts 7 distribute on running shaft.Wherein, one end of each connecting rod corresponding with its position is hinged respectively for the affixed running shaft 6 in one end of each driveshaft 7, the other end; The described the other end of respectively arranging connecting rod is fanned hinged with corresponding the first choked flow work fan or the second choked flow work respectively.As shown in Fig. 8, when motor band transmission drive running shaft 6 clockwise rotates certain angle, running shaft drives two to arrange driveshafts 7 rotations, and the first choked flow fan alive and alive the fanning of the second choked flow are opened in 8 motions of driveshaft drivening rod; When running shaft 6 rotates counterclockwise identical angle, the first choked flow fan alive and the second choked flow fan alive are closed.
Referring to Fig. 1, Fig. 2, Fig. 5, Fig. 6, the structure that arranges of fanning is lived in the first choked flow fan alive and the second choked flow can be as shown in Figure 1 and Figure 2, and its height dimension mates with the height dimension of blade; Also can be as shown in Figure 5, choked flow is lived and is fanned the intermediate portion that is arranged on blade height direction; Can also be as shown in Figure 6, choked flow fan alive intermittently arranges along the short transverse of blade.
Referring to Fig. 1-3 and Fig. 7, the utility model to another important improvement of blade is: the afterbody of blade 1 arranges spoiler 3, and spoiler is turnover structure, and the framework of spoiler one side and blade is hinged, and spoiler and blade connection part are provided with several torsion springs 9.The turnover direction of spoiler 3 is identical with the sense of rotation of blade.
Referring to Fig. 4, the chord length of described blade 1 is L, and the articulated position of choked flow fan alive and blade frame is 1/4L to the front end distance D of chord of blade length direction, and choked flow fan alive opening end is 1/2L to the distance B of blade front end, and the length C of spoiler is 1/4L-1/5L.
Referring to Fig. 9, this is that blade of the present invention is for the schematic diagram of H type vertical axis aerogenerator.In use, the blower fan rotary main shaft 11 of vertical axis aerogenerator connects hound 10 to the utility model, and hound and blade 1 are affixed, and blade clockwise rotates.In blade rotation process, spoiler 3 is subject to centrifugal action to produce the trend of turnover clockwise, but when centrifugal force is large not, is not enough to overcome the elastic force of torsion spring, the state of spoiler in stretching.When wind speed improves, blade rotational speed is accelerated, the suffered centrifugal force of spoiler also strengthens, when centrifugal force increases to the elastic force that overcomes torsion spring, spoiler overturns, blade chord length shortens, blade windward side diminishes, play blade decelerating effect on the one hand, the spoiler of turnover is upset air flow on the other hand, play and control the effect that blade rotational speed rises, so the rotating speed of blade can be not again increase with the raising of wind speed, blade rotational speed is controlled, the rotating speed that vertical-axis generators is kept relative stability in certain wind speed range.After wind speed reduces, centrifugal force reduces, the initial extended state that spoiler is replied under spring-force driven dual.When wind speed is excessive need to adopt braking device to control vertical axis aerogenerator rotating speed time, when enabling braking device, starting electrical machinery turns an angle, open choked flow fan alive, increase the choke face of blade, and upset the flow direction that air flows through blade, choked flow is lived and is fanned the effect of playing auxiliary brake braking, can effectively alleviate the load of braking device, improve the Safety performance of wind-force vertical-axis generators.When wind speed reduces, when blade rotational speed reduces, starting electrical machinery rotates backward several angle choked flow fan alive is closed.Working procedure when blade of the present invention is used for V-type vertical axis aerogenerator and H type vertical axis aerogenerator roughly the same, repeat no more herein.
Claims (9)
1. a vertical-axis generators blade with choked flow braking function, it comprises framework and is coated on the covering in framework outside, it is characterized in that: described blade (1) is provided with and can opens, fan (2) is lived in closed choked flow, the framework of described choked flow fan alive one side and blade is hinged, and choked flow is lived in fanning and connected control device.
2. the vertical-axis generators blade structure with choked flow braking function according to claim 1, is characterized in that: described choked flow fan alive (2) is comprised of two that lay respectively on two sides of blade the first choked flows fans alive (2-1) of opening round about and the second choked flow fan alive (2-2); Described control device comprises motor (4), running shaft (6), two row's driveshafts (7) and two row's connecting rods (8), described motor is fixed on the framework place of blade, motor output shaft band transmission (5) is in transmission connection with running shaft (6), two row's driveshafts (7) distribute on running shaft, wherein, the affixed running shaft in one end of each driveshaft, the other end respectively one end of each connecting rod corresponding with its position are hinged, and the described the other end of respectively arranging connecting rod is hinged with corresponding the first choked flow fan or the second choked flow fan of living of living respectively.
3. the vertical-axis generators blade structure with choked flow braking function according to claim 2, it is characterized in that: the afterbody of blade (1) arranges spoiler (3), spoiler is turnover structure, the framework of spoiler one side and blade is hinged, and spoiler and blade connection part are provided with several torsion springs (9).
4. the vertical-axis generators blade structure with choked flow braking function according to claim 3, is characterized in that: the described choked flow fan alive height dimension of (2) and the height dimension of blade mate.
5. the vertical-axis generators blade structure with choked flow braking function according to claim 3, is characterized in that: described choked flow fan alive (2) intermittently arranges along the short transverse of blade.
6. the vertical-axis generators blade structure with choked flow braking function according to claim 3, is characterized in that: described choked flow is lived and fanned the intermediate portion that (2) are arranged on blade height direction.
7. according to the vertical-axis generators blade structure with choked flow braking function described in claim 1,2,3,4,5 or 6, it is characterized in that: described blade chord length is L, live articulated position to the front end distance D of chord of blade length direction of fan (2) and blade frame of described choked flow is 1/4L, choked flow live fan opening end to the distance B of blade front end be 1/2L.
8. the vertical-axis generators blade structure with choked flow braking function according to claim 3, is characterized in that: described blade chord length is L, and the length C of described spoiler (3) is 1/4L-1/5L.
9. the vertical-axis generators blade structure with choked flow braking function according to claim 8, is characterized in that: the turnover direction of described spoiler (3) is identical with the sense of rotation of blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320356802.7U CN203404019U (en) | 2013-06-21 | 2013-06-21 | Vertical-axis generator blade with flow-chocking braking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320356802.7U CN203404019U (en) | 2013-06-21 | 2013-06-21 | Vertical-axis generator blade with flow-chocking braking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404019U true CN203404019U (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320356802.7U Expired - Lifetime CN203404019U (en) | 2013-06-21 | 2013-06-21 | Vertical-axis generator blade with flow-chocking braking function |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334874A (en) * | 2013-06-21 | 2013-10-02 | 张远林 | Flow choking braking blade for vertical axis wind turbine |
| CN110735767A (en) * | 2019-09-18 | 2020-01-31 | 浙江运达风电股份有限公司 | flexible tower wind-induced vibration flow disturbing device of retractable wind generating set |
| CN112977644A (en) * | 2021-02-24 | 2021-06-18 | 北京汽车集团越野车有限公司 | Flow guide device, flow guide control system, flow guide control method and vehicle |
| CN116292078A (en) * | 2023-02-14 | 2023-06-23 | 河南国网自控电气有限公司 | Self-adaptive constant-speed operation wind driven generator |
-
2013
- 2013-06-21 CN CN201320356802.7U patent/CN203404019U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334874A (en) * | 2013-06-21 | 2013-10-02 | 张远林 | Flow choking braking blade for vertical axis wind turbine |
| CN103334874B (en) * | 2013-06-21 | 2015-11-18 | 张远林 | A kind of braking of the choked flow for vertical axis aerogenerator blade |
| CN110735767A (en) * | 2019-09-18 | 2020-01-31 | 浙江运达风电股份有限公司 | flexible tower wind-induced vibration flow disturbing device of retractable wind generating set |
| CN112977644A (en) * | 2021-02-24 | 2021-06-18 | 北京汽车集团越野车有限公司 | Flow guide device, flow guide control system, flow guide control method and vehicle |
| CN116292078A (en) * | 2023-02-14 | 2023-06-23 | 河南国网自控电气有限公司 | Self-adaptive constant-speed operation wind driven generator |
| CN116292078B (en) * | 2023-02-14 | 2024-04-12 | 河南国网自控电气有限公司 | Self-adaptive constant-speed operation wind driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140122 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |