CN102434393A - Vertical axis wind turbine brake device - Google Patents
Vertical axis wind turbine brake device Download PDFInfo
- Publication number
- CN102434393A CN102434393A CN2011104590786A CN201110459078A CN102434393A CN 102434393 A CN102434393 A CN 102434393A CN 2011104590786 A CN2011104590786 A CN 2011104590786A CN 201110459078 A CN201110459078 A CN 201110459078A CN 102434393 A CN102434393 A CN 102434393A
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- China
- Prior art keywords
- spoiler
- vertical axis
- vertical
- axis windmill
- rotating shaft
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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
Abstract
The invention provides a vertical axis wind turbine brake device, wherein one end of a rotary shaft of a spoiler is connected with a support of a vertical axis wind turbine, the other end of the rotary shaft of the spoiler is articulated with the spoiler, and the profile shape of the spoiler is a symmetrical wing shape; when wind force is smaller, the spoiler can be used for rotating around the rotary shaft of the spoiler until the profile axial line is parallel to the horizontal plane without influencing the normal operation of the vertical axis wind turbine; and when the wind force is greater, the spoiler can be used for rotating until the profile axial line is vertical to the horizontal plane, the frontal area is increased, and greater resistance is generated, thus the vertical axis wind turbine slows down. The brake effect can be achieved without the mutual effect of machinery, the vertical axis wind turbine is ensured to brake safely, and the service life of the brake device is prolonged.
Description
Technical field
The present invention relates to the wind energy application, relate in particular to a kind of vertical-shaft wind machine braking device.
Background technique
At present, vertical axis windmill mainly contains S type, Φ type and three kinds of structural types of H type.As shown in Figure 1, be example with H type vertical axis windmill, vertical axis windmill comprises rotating shaft 1, blade 2 and support 3; Wherein, be fixedly connected support 3 between each blade 2 and the rotating shaft 1.
Rotating shaft 1 lower end of vertical axis windmill can be connected with generator, and vertical axis windmill can be the wind comes from, and becomes electric energy to export to generator wind energy transformation.When wind-force was very big, the rotating speed of vertical axis windmill is also corresponding to uprise, and the output power of wind energy conversion system rises significantly.The too high load that the vertical axis windmill structure is born of rotating speed itself is very big, causes the dangerous of structure, if the too high meeting of output power burns out generator simultaneously.Therefore need carry out safety brake to vertical axis windmill.In the existing technology, generally be employed in mechanical brakes such as brake disc is installed in the rotating shaft, utilize brake block that brake disc is vised,, realize braking rotation system through the surface friction drag between brake lining and the brake disc.
The inventor finds in practice process; Because brake block vises brake disc, when slowing down, vertical axis windmill can stop moment, and its inertia can produce very big impact force; The blade 2 of vertical axis windmill, support 3 etc. are caused very big impulsive load, cause the damage of vertical axis windmill.And brake disc is very big with the friction that brake block directly contacts generation, and long-term use meeting causes damage to brake disc and brake block.
Summary of the invention
The present invention provides a kind of vertical-shaft wind machine braking device, can reduce the rotating speed of vertical axis windmill, guarantees the vertical axis windmill safety brake.
A kind of vertical-shaft wind machine braking device comprises:
Rotating shaft 1, blade 2, support 3, spoiler 4 and spoiler rotating shaft 5;
Wherein, each support 3 one end is fixedly connected rotating shaft 1, and the other end passes a blade 2, is connected with an end of spoiler rotating shaft 5; The hinged spoiler 4 of spoiler rotating shaft 5 the other ends; Wherein, the section shape of spoiler 4 is a symmetrical airfoil;
When vertical axis windmill rotating speed during less than permitted value, spoiler 4 is used for rotating around spoiler rotating shaft 5, makes the section axis of spoiler 4 parallel with horizontal plane, and vertical axis windmill is normally moved; When vertical axis windmill rotating speed during greater than permitted value, spoiler 4 is used for rotating around spoiler rotating shaft 5, makes the section axis of spoiler 4 vertical with horizontal plane, makes vertical axis windmill be in braking state.
Optional, rotating shaft 1 is installed perpendicular to horizontal plane.
Optional, the quantity of blade 2 is at least two.
Optional, the quantity of blade 2 equates with the quantity of said spoiler rotating shaft 5.
Optional, the quantity of spoiler rotating shaft 5 equates with the quantity of spoiler 4.
Optional, when vertical axis windmill normally moved, the windward side area of spoiler 4 was greater than the lee face area.
Optional, when vertical axis windmill was in braking state, the wind-exposuring area of spoiler 4 equaled leeward area.
Optional, when vertical axis windmill was in braking state, the distance on two hithermost surfaces was bigger than the distance on two hithermost surfaces between blade 2 when vertical axis windmill normally moves and the spoiler 4 between blade 2 and the spoiler 4.
Optional, when overlooking, the area of contour of the spoiler 4 when projected area ratio's vertical axis windmill of the spoiler 4 when vertical axis windmill normally moves is in braking state is big.
Can find out that from above technological scheme the embodiment of the invention has the following advantages:
Among the present invention, spoiler rotating shaft 5 one ends are connected with the support of vertical axis windmill, and the other end and spoiler 4 are hinged, and the section shape of spoiler 4 is a symmetrical airfoil; Less at wind-force, spoiler 4 can be used for turning to its section axis state parallel with horizontal plane around spoiler rotating shaft 5, does not influence the normal operation of vertical axis windmill; When wind-force was big, spoiler 4 can be used to turn to its section axis state vertical with horizontal plane, and wind-exposuring area increases, and produces bigger resistance, and vertical axis windmill is slowed down.This device need can not reach braking effect through interacting between the machinery, has guaranteed that vertical axis windmill can safety brake, and the working life of having improved braking device.
Description of drawings
In order to be illustrated more clearly in the technological scheme among the present invention; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the H type vertical axis windmill basic block diagram of existing technology;
Fig. 2 is the basic block diagram of a kind of vertical-shaft wind machine braking device provided by the invention;
Fig. 3 is the basic block diagram of another kind of vertical-shaft wind machine braking device provided by the invention;
Fig. 4 is the spoiler structural drawing of a kind of vertical-shaft wind machine braking device provided by the invention;
Fig. 5 is the plan view of a kind of vertical-shaft wind machine braking device provided by the invention;
Fig. 6 is the plan view of another kind of vertical-shaft wind machine braking device provided by the invention.
Embodiment
The present invention provides a kind of vertical-shaft wind machine braking device, can reduce the rotating speed of vertical axis windmill, guarantees the vertical axis windmill safety brake.
To combine the accompanying drawing among the present invention below, the technological scheme among the present invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 2, Fig. 2 is the basic block diagram of a kind of vertical-shaft wind machine braking device provided by the invention.As shown in Figure 2, this vertical-shaft wind machine braking device can comprise:
Rotating shaft 1, blade 2, support 3, spoiler 4 and spoiler rotating shaft 5;
Wherein, each support 3 one end is fixedly connected rotating shaft 1, and the other end passes a blade 2, is connected with an end of spoiler rotating shaft 5; The hinged spoiler 4 of spoiler rotating shaft 5 the other ends; Wherein, the section shape of spoiler 4 is a symmetrical airfoil;
The normal working of spoiler 4 can be consulted Fig. 2, and is as shown in Figure 2, and when vertical axis windmill rotating speed during less than permitted value, spoiler 4 is used for rotating around spoiler rotating shaft 5, and the axis of section that rotates rear spoiler 4 is parallel with horizontal plane, and wind energy conversion system is normally moved.See also Fig. 3, Fig. 3 is the basic block diagram of another kind of vertical-shaft wind machine braking device provided by the invention.When vertical axis windmill rotating speed during greater than permitted value, spoiler 4 is used for rotating around spoiler rotating shaft 5, and the axis of section that rotates rear spoiler 4 is vertical with horizontal plane, makes wind energy conversion system be in braking state.For vertical axis windmill, the permitted value of its wind speed can be provided with according to actual needs, and the present invention does not limit.
See also Fig. 4, Fig. 4 is the spoiler structural drawing of a kind of vertical-shaft wind machine braking device provided by the invention.As shown in Figure 4, among the present invention, the shape of spoiler 4 can be symmetrical airfoil.
Wherein, the similar straight wing of the shape of spoiler 4 is not variable cross section, and its section shape is a symmetrical airfoil, gets final product like the aerofoil profile of NACA0010.
Wherein, spoiler 4 is used for rotating around spoiler rotating shaft 5.What need further specify is that the rotary state of spoiler 4 has only two kinds: spoiler 4 can be used for turning to the axis of its section state parallel with horizontal plane or spoiler 4 around spoiler rotating shaft 5, and can be used for turning to around spoiler rotating shaft 5 axis of its section parallel with horizontal plane.When the axis of the section of spoiler 4 was parallel with horizontal plane, the area that spoiler 4 facings the wind was less, and the one side leading edge of facining the wind is blunt nosed; Leeward one side is point; Wind can flow through two sides of spoiler 4, and the resistance of generation is very little, and vertical axis windmill can normally move; When the axis of the section of spoiler 4 was vertical with horizontal plane, the side of spoiler 4 facingd the wind, and the area that spoiler 4 facings the wind is bigger, and the resistance of generation is bigger, makes the vertical axis windmill motion speed reduce gradually, thereby reaches the effect to the vertical axis windmill braking.
Among the present invention, rotating shaft 1 is installed perpendicular to horizontal plane.
Among the present invention, the quantity of blade 2 is at least two.
Among the present invention, the quantity of blade 2 can be as shown in Figure 23, also can be 2 or 4 or more a plurality of, and the present invention does not limit; Wherein, blade 2 can be a prismatic blade, can be bent blades also, and the present invention does not limit.
Among the present invention, the quantity of blade 2 can equate with the quantity of spoiler rotating shaft 5.
Wherein, each support 3 one end is fixedly connected rotating shaft 1, and the other end passes a blade 2, is connected with an end of spoiler rotating shaft 5.Preferably, each support 3 one end can be connected with a spoiler rotating shaft 5.
Among the present invention, the quantity of spoiler rotating shaft 5 can equate with the quantity of spoiler 4.
Preferably, spoiler rotating shaft 5 one ends can be fixedly connected with support 3, and the other end can a hinged spoiler 4.Spoiler 4 can rotate around spoiler rotating shaft 5.
Among the present invention, when vertical axis windmill normally moved, the windward side area of spoiler 4 was greater than the lee face area.
Wherein, the similar straight wing of the shape of spoiler 4, when vertical axis windmill normally moved, the windward side of spoiler 4 was blunt nosed, lee face is a tip.Evenly from spoiler 4 surface flow mistakes, the resistance of generation is very little for wind, can not hinder the operation of vertical axis windmill.
Among the present invention, when vertical axis windmill was in braking state, the windward side area of spoiler 4 equaled the lee face area.
Wherein, The section shape of spoiler 4 is a symmetrical airfoil, and spoiler 4 is transferred to turn 90 degrees, and its two sides become windward side or lee face respectively; Because wind-exposuring area is bigger and wind-exposuring area equates with leeward area; Wind can not flow through spoiler 4, and the resistance of generation is bigger, thereby the speed of vertical axis windmill is reduced.
Among the present invention, when vertical axis windmill was in braking state, the distance on two hithermost surfaces was bigger than the distance on two hithermost surfaces between blade 2 when vertical axis windmill normally moves and the spoiler 4 between blade 2 and the spoiler 4.
Wherein, when vertical axis windmill need slow down, spoiler 4 can be protruding by control, is used further to turn to its section axis normal in the state of horizontal plane around spoiler rotating shaft 5.Spoiler 4 can be made braking effect better by the protruding resistance torque that can increase its generation.
Among the present invention, when overlooking, the area of contour of the spoiler 4 when projected area ratio's vertical axis windmill of the spoiler 4 when vertical axis windmill normally moves normally is in braking state is big.
Wherein, see also Fig. 5, Fig. 5 is the plan view of a kind of vertical-shaft wind machine braking device provided by the invention.Please consult Fig. 6 in the lump, Fig. 6 is the plan view of another kind of vertical-shaft wind machine braking device provided by the invention.As shown in Figure 5, during the vertical axis windmill proper functioning, the downward projection of spoiler 4 is lateralareas of spoiler 4.As shown in Figure 6, when vertical axis windmill was in braking state, the downward projection of spoiler 4 was blunt nosed areas of spoiler 4.The area of contour of the spoiler 4 when projected area ratio's vertical axis windmill of the spoiler 4 when therefore vertical axis windmill normally moves is in braking state is big.
Wherein, when normally moving owing to vertical axis windmill, the wind-exposuring area of spoiler 4 is less, and the area of contour of spoiler 4 is bigger when therefore overlooking.Because when vertical axis windmill was in braking state, the wind-exposuring area of spoiler 4 was bigger, the area of contour of spoiler 4 is less when therefore overlooking.
Among the present invention, spoiler rotating shaft 5 one ends are connected with the support of vertical axis windmill, and the other end and spoiler 4 are hinged, and the section shape of spoiler 4 is a symmetrical airfoil; Less at wind-force, spoiler 4 can be used for turning to its section axis state parallel with horizontal plane around spoiler rotating shaft 5, does not influence the normal operation of vertical axis windmill; Can be used to turn to its section axis state vertical with horizontal plane at the big spoiler 4 of wind-force, wind-exposuring area increases, and produces bigger resistance, and vertical axis windmill is slowed down.This device need can not reach braking effect through interacting between the machinery, has guaranteed that vertical axis windmill can safety brake, and the working life of having improved braking device.
More than a kind of vertical-shaft wind machine braking device provided by the present invention has been carried out detailed introduction; For one of ordinary skill in the art; Thought according to the embodiment of the invention; The part that on embodiment and application area, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a vertical-shaft wind machine braking device is characterized in that, comprising:
Rotating shaft (1), blade (2), support (3), spoiler (4) and spoiler rotating shaft (5);
Wherein, each said support (3) one end is fixedly connected said rotating shaft (1), and the other end passes a said blade (2), is connected with an end of said spoiler rotating shaft (5); The hinged said spoiler of said spoiler rotating shaft (5) the other end (4); Wherein, the section shape of said spoiler (4) is a symmetrical airfoil;
When vertical axis windmill rotating speed during less than permitted value, said spoiler (4) is used for rotating around said spoiler rotating shaft (5), makes the section axis of said spoiler (4) parallel with horizontal plane, and vertical axis windmill is normally moved; When vertical axis windmill rotating speed during greater than permitted value, said spoiler (4) is used for rotating around said spoiler rotating shaft (5), makes the section axis of said spoiler (4) vertical with horizontal plane, makes vertical axis windmill be in braking state.
2. vertical-shaft wind machine braking device according to claim 1 is characterized in that,
Said rotating shaft (1) is installed perpendicular to horizontal plane.
3. vertical-shaft wind machine braking device according to claim 2 is characterized in that,
The quantity of said blade (2) is at least two.
4. vertical-shaft wind machine braking device according to claim 3 is characterized in that,
The quantity of said blade (2) equates with the quantity of said spoiler rotating shaft (5).
5. vertical-shaft wind machine braking device according to claim 4 is characterized in that,
The quantity of said spoiler rotating shaft (5) equates with the quantity of said spoiler (4).
6. according to any described vertical-shaft wind machine braking device in the claim 1 to 5, it is characterized in that, comprising:
When vertical axis windmill normally moved, the windward side area of said spoiler (4) was greater than the lee face area.
7. according to any described vertical-shaft wind machine braking device in the claim 1 to 5, it is characterized in that, comprising:
When vertical axis windmill was in braking state, the wind-exposuring area of said spoiler (4) equaled leeward area.
8. according to any described vertical-shaft wind machine braking device in the claim 1 to 5, it is characterized in that, comprising:
When vertical axis windmill was in braking state, the distance on two hithermost surfaces was bigger than the distance on two hithermost surfaces between said blade (2) when vertical axis windmill normally moves and the said spoiler (4) between said blade (2) and the said spoiler (4).
9. according to any described vertical-shaft wind machine braking device in the claim 1 to 5, it is characterized in that, comprising:
When overlooking, the area of contour of the said spoiler (4) when projected area ratio's vertical axis windmill of the said spoiler (4) when vertical axis windmill normally moves is in braking state is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104590786A CN102434393A (en) | 2011-12-31 | 2011-12-31 | Vertical axis wind turbine brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104590786A CN102434393A (en) | 2011-12-31 | 2011-12-31 | Vertical axis wind turbine brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434393A true CN102434393A (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104590786A Pending CN102434393A (en) | 2011-12-31 | 2011-12-31 | Vertical axis wind turbine brake device |
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| Country | Link |
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| CN (1) | CN102434393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647634A (en) * | 2019-01-25 | 2019-04-19 | 中国工程物理研究院总体工程研究所 | A kind of centrifuge disturbing flow device |
| CN109883641A (en) * | 2019-04-02 | 2019-06-14 | 重庆科技学院 | Wedge disturbing flow device wind field spoiler mounting structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029247A1 (en) * | 2000-09-29 | 2002-04-11 | Bonus Energy A/S | Method for regulating a windmill and an apparatus for the use of said method |
| CN1702322A (en) * | 2005-06-14 | 2005-11-30 | 韩永勤 | Wind energy generator |
| CN202451365U (en) * | 2011-12-31 | 2012-09-26 | 深圳市风发科技发展有限公司 | Brake device of vertical axis wind turbine |
-
2011
- 2011-12-31 CN CN2011104590786A patent/CN102434393A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029247A1 (en) * | 2000-09-29 | 2002-04-11 | Bonus Energy A/S | Method for regulating a windmill and an apparatus for the use of said method |
| CN1702322A (en) * | 2005-06-14 | 2005-11-30 | 韩永勤 | Wind energy generator |
| CN202451365U (en) * | 2011-12-31 | 2012-09-26 | 深圳市风发科技发展有限公司 | Brake device of vertical axis wind turbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647634A (en) * | 2019-01-25 | 2019-04-19 | 中国工程物理研究院总体工程研究所 | A kind of centrifuge disturbing flow device |
| CN109647634B (en) * | 2019-01-25 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | Turbulent flow device of centrifugal machine |
| CN109883641A (en) * | 2019-04-02 | 2019-06-14 | 重庆科技学院 | Wedge disturbing flow device wind field spoiler mounting structure |
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Application publication date: 20120502 |