CN201802556U - Vertical axis wind wheel preventing over rotational speed - Google Patents
Vertical axis wind wheel preventing over rotational speed Download PDFInfo
- Publication number
- CN201802556U CN201802556U CN2010202643046U CN201020264304U CN201802556U CN 201802556 U CN201802556 U CN 201802556U CN 2010202643046 U CN2010202643046 U CN 2010202643046U CN 201020264304 U CN201020264304 U CN 201020264304U CN 201802556 U CN201802556 U CN 201802556U
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- wind wheel
- speed
- wind
- vertical axis
- rotational speed
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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
The utility model discloses a vertical axis wind wheel preventing over rotational speed, which comprises a wind wheel axis and two or more than two power-lifting blades arranged on the wind wheel axis, wherein two flat plate-type damped blades are arranged at the top of the wind wheel axis, and are designed in an asymmetric manner. When the wind wheel overspeeds, the damped blades shift under the action of centrifugal force and generate damping action, so as to limit the increase of the rotational speed of the wind wheel; and when the rotational speed is higher, the shift of the damped blades is larger, and the damping torque is larger, and the increase of the rotational speed under the high wind speed is limited, so that the wind wheel can continuously kept in a highly efficient operation state under the high wind speed, and the overload operation of the wind wheel is protected. Therefore, the advantage of the utility model that the vertical axis wind wheel can operate within a wide range of wind speed is significantly indicated.
Description
Technical field
The utility model has related to lift vertical shaft wind energy conversion system technical field, specifically is a kind of vertical axis straight blade lifting wind wheel that limits output speed that has.
Background technique
Vertical axis windmill, under the equal running environment, rotating speed is slow than horizontal axis, and tip speed ratio is about 2～3.But the intensity of the wind that the vertical axis rotor structure theory can stand is bigger.If operation or when running into the high wind environment, the rotating speed of vertical axis rotor is also very fast under high wind, do not limited the vertical shaft wind wheel speed this moment, and then generator can't efficiently move, and causes the wind energy conversion system overload easily yet and damage.
But the speed limit technology of vertical axis rotor is an insoluble problem always.Horizontal axis rotor is close to cabin greatly, can be provided with in a lot of the change oar transmission system and airport, thereby realize change oar technology.But vertical axis rotor is subjected to the influence of structure, can't use for reference the change oar control technique of horizontal axis, or adopts the stall design of blade, or adopts the deliberate speed loss control technique, limits the rotating speed and the power output of wind wheel.More can't imitate horizontal axis rotor and reverse the wind wheel direction and make it, limit rotating speed not to the method for wind.Therefore, vertical axis rotor must adopt other measure to limit the wind speed round growth, otherwise vertical axis rotor can't move under the high wind condition, the advantage that vertical axis rotor can move under 25～45m/s (horizontal axis can only move under less than the 25m/s wind speed) high wind in theory can't be achieved in practice.
Therefore, be necessary to design a kind of method that limits vertical axis rotor power-limiting output and rotating speed behind rated wind speed.
Summary of the invention
Technical problem to be solved in the utility model is to control for solving the vertical axis windmill hypervelocity, and the vertical axis straight blade lifting wind wheel that the rated output power again of the controllable rotation speed that provides moves down.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of vertical axis rotor that limits over speed of rotation, comprise rotor shaft and be arranged on 2 or 2 above lift-type blades on the described rotor shaft, described rotor shaft is provided with a damping vane that links to each other with rotor shaft, this damping vane forms a subtended angle under the action of the centrifugal and between the rotor shaft axis, also be provided with an outer cover in the rotor shaft upper end, the upper end of this outer cover acts on the damping vane, spring is arranged in outer cover, and this spring acts on by the outer cover upper end tightening force opposite with the centrifugal action direction is provided on the damping vane.
The described cylinder and the diameter of axle be to fixing, but can move up and down vertically.
Described damping vane has two at least, and blade is a slab design, and low side is linked with axle, can rotate in axial 0～90 ° of scope.
Described damping vane quality is inhomogeneous, on one side the quality height, quality is low on one side.
Described cylinder adopts roller to contact with plate blade, and purpose is to adopt rolling friction to reduce friction, and damping vane is deflected smoothly.
Compared with prior art, the beneficial effect of lifting wind wheel speed limiting device of the present invention is:
1, utilize the mass eccentricity of dull and stereotyped damping vane, the centrifugal force that under hypervelocity, produces, adaptive skew to some extent produces damping torque, and damping torque can increase and increases with rotating speed, and rotating speed reduces and reduces, and limiting rotating speed well increases.
2, damping vane does not deflect in rated speed, and two damping vane closures are contracted in cylinder by the effect of spring, do not influence the overall performance of wind wheel, more can not produce damping function.
4, the method can realize the efficient and safe operation under the high wind speed, the high wind that has utilized strong wind high wind to bring preferably really.
5, can make wind wheel strengthen the ability that adapts to rugged environment in practice.
Description of drawings
Fig. 1 is that the present invention has speed limiting device vertical axis rotor overall schematic.
Fig. 2 is the structural representation of speed limiting device of the present invention
Fig. 3 is a damping vane structural representation of the present invention.
Wind wheel overall schematic schematic representation when the high rotating speed of Fig. 4 moves.
Wherein:, rotor shaft; 2, lift-type blade; 3, outer cover; 4, damping vane; 5, skew guide plate, 6, spring; 7, roller;
Embodiment
1,, the present invention is elaborated below in conjunction with accompanying drawing.As shown in Figure 1, the present invention limits the device of vertical axis rotor hypervelocity, comprises rotor shaft 1, at the lift-type blade 2 that is equipped with on the rotor shaft 1 more than 2 or 2; Cylinder 3, damping vane 4, damping vane skew guide plate 5, spring 6, roller 7.
2, as shown in Figure 2, damping vane 4 bottoms are connected with axle, and are offset guide plate 5 and always lead, and limit offset direction and angle, and utilize connecting end and guide plate 5 to be used for transmitting damping torque.
3, be in the rated wind speed when wind speed as Fig. 2, wind wheel is to be no more than the speed rotation of rated speed, and under the thrust of 6 pairs of cylinders 3 of spring, damping vane closes up in the axis of rotation place, and major part is hidden in the outer cover, does not influence the rotation of wind wheel.
4, damping vane 4 shown in Figure 3 is for quality misaligns design, because of quality on one side obviously greater than another side, under high speed, produce centrifugal force, while quality big drive the little telemechanical that deflects of quality.The damping torque that damping vane produces increases with the increase of side-play amount
5, as shown in Figure 4, after wind speed surpasses rated wind speed, the wind speed round hypervelocity, the centrifugal force of damping vane 4 multiply by length of blade is put the blade low side greater than cylinder elastic force and damping product, be that the centrifugal force deflecting torque is greater than the cylinder damping torque, damping vane produces skew, and damping vane produces damping effect, has limited rotating speed to a certain extent and has continued to rise.
6, when wind speed continuation increase, or rotating speed continuation increase, the side-play amount of damping vane 4 increases, and the damping torque of generation further increases, and further limits the increase of rotating speed.
7, when wind speed reduces, rotating speed falls after rise, and the centrifugal force that damping vane 4 produces weakens, and under the Driving force of the spring in cylinder, the cylinder outer cover moves upward, and promotes blade and closes up.
8, it is less that lifting wind wheel produces moment, therefore design the elongated shape damping vane and just can produce big damping torque, thereby the rotating speed that limits wind wheel preferably increases.
The utility model is a kind of method of lift vertical shaft control rotating speed, utilizes the disparity of dull and stereotyped damping vane both sides quality, produces skew under action of centrifugal force, and the skew rear blade produces damping function, thus the increase of restriction wind speed round.Rotating speed is high more, damping vane deflection is big more, the damping torque that produces is big more, effective more restriction rotating speed increases, thereby make wind wheel under high wind speed, continue efficient operation, prevent the overlond running of wind wheel, the method is simply effective, and manifests the advantage that vertical axis rotor can specified running in the broad wind speed really on the meaning.
Claims (1)
1. vertical axis rotor that limits the lift-type over speed of rotation, comprise rotor shaft (1) and be arranged on 2 or 2 above lift-type blades (2) on the described rotor shaft, it is characterized in that: described rotor shaft (1) is provided with a damping vane that links to each other with rotor shaft (4), this damping vane (4) forms a subtended angle under the action of the centrifugal and between the rotor shaft axis, also be provided with an outer cover (3) in rotor shaft (2) upper end, the upper end of this outer cover (3) acts on the damping vane (4), spring (6) is arranged in outer cover (3), and this spring (6) acts on by outer cover (3) upper end a tightening force opposite with the centrifugal action direction is provided on the damping vane (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202643046U CN201802556U (en) | 2010-07-19 | 2010-07-19 | Vertical axis wind wheel preventing over rotational speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202643046U CN201802556U (en) | 2010-07-19 | 2010-07-19 | Vertical axis wind wheel preventing over rotational speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802556U true CN201802556U (en) | 2011-04-20 |
Family
ID=43872056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202643046U Expired - Fee Related CN201802556U (en) | 2010-07-19 | 2010-07-19 | Vertical axis wind wheel preventing over rotational speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802556U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088754A (en) * | 2014-07-29 | 2014-10-08 | 南通理工学院 | Vertical axis wind turbine |
| CN110360058A (en) * | 2019-08-17 | 2019-10-22 | 温州乾含节能科技有限公司 | A kind of vertical axis aerogenerator pylon |
| US11649700B2 (en) | 2018-05-02 | 2023-05-16 | Conocophillips Company | Production logging inversion based on DAS/DTS |
-
2010
- 2010-07-19 CN CN2010202643046U patent/CN201802556U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088754A (en) * | 2014-07-29 | 2014-10-08 | 南通理工学院 | Vertical axis wind turbine |
| US11649700B2 (en) | 2018-05-02 | 2023-05-16 | Conocophillips Company | Production logging inversion based on DAS/DTS |
| CN110360058A (en) * | 2019-08-17 | 2019-10-22 | 温州乾含节能科技有限公司 | A kind of vertical axis aerogenerator pylon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20130719 |