CN203098141U - Novel down-wind wind machine vane system capable of adjusting vane angular displacement - Google Patents

Novel down-wind wind machine vane system capable of adjusting vane angular displacement Download PDF

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Publication number
CN203098141U
CN203098141U CN2013200677817U CN201320067781U CN203098141U CN 203098141 U CN203098141 U CN 203098141U CN 2013200677817 U CN2013200677817 U CN 2013200677817U CN 201320067781 U CN201320067781 U CN 201320067781U CN 203098141 U CN203098141 U CN 203098141U
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China
Prior art keywords
wind
wind speed
angular displacement
vane
blade
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Withdrawn - After Issue
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CN2013200677817U
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Chinese (zh)
Inventor
吴东垠
李超
蒙佳
曹慎腾
朱毅莹
邹洋
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Xian Jiaotong University
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Xian Jiaotong University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The utility model discloses a novel down-wind wind machine vane system capable of adjusting vane angular displacement. The novel down-wind wind machine vane system capable of adjusting the vane angular displacement comprises a wind speed induction device arranged on the wind-near side outside a machinery space, a controller which is arranged inside the machinery space and is in electric connection with the wind speed induction device, a wheel hub arranged on the wind-far side outside the machinery space, vane bodies connected with the wheel hub through a rotary shaft and actuation mechanisms which are arranged on two sides of the rotary shaft and are connected with the rotary shaft. The actuation mechanisms are in electric connection with the controller. The wind speed induction device transmits a speed signal to the controller, the controller sends out commands to command the actuation mechanisms to remove locking to the rotary shaft, the rotary shaft is driven to rotate, and the vane bodies which are connected with the rotary shaft rotate along with the rotary shaft in a synchronism and same angle mode to achieve the purpose that in following wind, the vane bodies are drawn in, and in dead wind, the vane bodies are unfolded. With changes of wind speed, a few of angles can be set, and occurrence of the situation that vanes are unstable caused by continuous rotation is avoided. By the adoption of the novel down-wind wind machine vane system capable of adjusting the vane angular displacement, energy capture of a wind driven generator can be reduced when wind speed is large, the situation that the wind driven generator can work nearby nominal parameters is guaranteed, and wind speed application range of the wind driven generator is expanded.

Description

A kind of novel leeward of adjustable vane angular displacement is to the wind energy conversion system blade system
Technical field
The utility model belongs to technical field of wind power generating equipment, and the novel leeward that is specifically related to a kind of adjustable vane angular displacement is to the wind energy conversion system blade system.
Background technique
Along with the exhaustion day by day of fossil energy, seek the most important thing that alternative energy source becomes countries in the world energy field related work.Wind energy is a kind of renewable energy sources of cleaning, and is in China's develop rapidly, also more and more higher in the ratio of energy resource structure over past ten years.Yet utilizing a great limitation of wind energy is that economic wind speed range is narrower.In general, the wind speed of 3~20m/s is the adaptable economic wind speed of present wind-driven generator.The startup wind speed of wind-driven generator is 3~4m/s, and cut-out wind speed (shutdown wind speed) is about 25m/s.When wind speed was lower than the startup wind speed, wind energy conversion system can not generate electricity; When wind speed surpassed cut-out wind speed, wind-driven generator must be shut down.Enlarge wind speed Applicable scope and in engineering is used, very big practical significance is arranged.
Wind-driven generator is the device that wind energy is converted into electric energy, is operated within certain wind speed range.People wish no matter how wind speed changes, and the rotating speed of wind-driven generator keeps constant and can not surpass CLV ceiling limit value.This just requires wind-driven generator when wind speed becomes big, reduces the energy capture of blade, and reduces the impact that blade is subjected to.Change the blade angle displacement, and then to change the blade angle of facining the wind be a kind of mode of effective adjusting wind energy conversion system power.
The area (such as modes such as punching, folding and stretchings) that changes blade body is bigger to the intensity effect of blade, especially under big wind speed, cause blade to damage easily, and the difficulty that changes blade area in manufacturing and the running is bigger, particularly running is because the wind-force effect, the different parts mutual extrusion of each blade are difficult to relatively move, and variable-area is regulated comparatively difficulty.
Wind energy conversion system is divided into horizontal-shaft wind turbine and vertical axis windmill according to the direction of axle.For horizontal-shaft wind turbine, can be divided into upwind wind energy conversion system and leeward again to wind energy conversion system with respect to the position of incoming flow wind according to blade and cabin.The upwind wind energy conversion system needs yaw system, and leeward can be automatically to wind, so do not need yaw system to wind energy conversion system.And, under extreme big wind speed, the danger that the upwind wind energy conversion system exists blade and cabin to bump against, then there is not this danger in leeward to wind energy conversion system.
The model utility content
For solving above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of novel leeward of adjustable vane angular displacement to the wind energy conversion system blade system, can be according to the angular displacement of wind speed adjusting vane, and easy to adjust, thus the wind speed Applicable scope of wind-driven generator enlarged.
In order to achieve the above object, the technological scheme that the utility model adopted is:
A kind of novel leeward of adjustable vane angular displacement is to the wind energy conversion system blade system, comprise the wind speed induction installation 1 that is installed in outside the cabin nearly wind side, be installed in the controller 2 that is electrically connected with wind speed induction installation 1 in the cabin in, the wheel hub 3 that is installed in the wind side far away cabin outside, the blade body 4 that is connected with wheel hub 3 by rotating shaft 6 and be installed in the actuator 5 that rotating shaft 6 both sides also are connected with it, described actuator 5 and controller 2 electrical connections.
Have three rotating shafts 6 to connect three blade bodies 4 respectively on the described wheel hub 3, and blade body 4 is along with rotating shaft 6 synchronous same angular turn.
Make that by controller 2 control executing mechanism 5 rotation of rotating shaft 6 is not along with the increase and decrease of wind speed is rotated continuously, but rotating shaft 6 drives blade body 4, makes that the angle Ф between blade body 4 and the wind energy conversion system horizontal axis has fixing angle value.
Angle Ф is divided into 10 intervals from 90 ° to 0 °, its fixing angle value is 90 °, 72 °, 63 °, 57 °, 51 °, 45 °, 39 °, 33 °, 27 °, 18 ° and 0 °.
Working principle of the present utility model is: wind speed induction installation 1 passes to controller 2 with rate signal, controller 2 sends instruction, command execution mechanism 5 removes the locking of countershaft 6, drive rotating shaft 6 then and rotate, three blade bodies 4 that link to each other with rotating shaft 6 are then along with rotating shaft 6 synchronous same angular turn.
Compare with prior art, the utlity model has following advantage:
Adopt the utility model system can when wind speed is excessive, reduce the energy capture of wind-driven generator, guarantee that wind energy conversion system is operated near the nominal parameter, thereby enlarge the wind speed Applicable scope of wind-driven generator.And because leeward makes blade draw in along downwind when wind speed is big to the innate advantage of wind energy conversion system, angular displacement reduces, and windage can not increase suddenly too much, and the impact that blade is subjected to is more stable; In wind speed process from large to small, blade launches towards upwind, and windage can not reduce suddenly too much, and the impact that blade is subjected to is less, regulates also more stable.Like this, the load that blade bears in the whole service process can not suddenlyd change, so strengthened the Security and the stability of blade.
Description of drawings
The utility model blade body was in the schematic representation of nominal situation position when Fig. 1 was normal wind speed.
Schematic representation when the angular displacement of the utility model blade body was Ф when Fig. 2 was the wind speed increase.
Fig. 3 is that wind speed is excessive, and the utility model blade body folds and the view of wind energy conversion system when shutting down fully when surpassing the blade tolerance range.
Fig. 4 is the view of the utility model upwind.
Fig. 5 is angular displacement Ф, and (V represents incoming flow wind speed, V among the figure with the function relation schematic representation of wind speed size V 0The maximum of expression when the former operating mode of wind energy conversion system is normally moved can be born wind speed, and Ф represents the angle of blade and wind energy conversion system horizontal axis, and this figure is the situation of 10 gears).
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figures 1 to 4, the utility model is that a kind of novel leeward of adjustable vane angular displacement is to the wind energy conversion system blade system, comprise the wind speed induction installation 1 that is installed in outside the cabin nearly wind side, be installed in the controller 2 that is electrically connected with wind speed induction installation 1 in the cabin in, the wheel hub 3 that is installed in the wind side far away cabin outside, the blade body 4 that is connected with wheel hub 3 by rotating shaft 6 and be installed in the actuator 5 that rotating shaft 6 both sides also are connected with it, described actuator 5 and controller 2 electrical connections.Wind speed induction installation 1 is measured the incoming flow wind speed, and information in time passed to controller 2, controller 2 sends instruction, 5 work of command execution mechanism, actuator 5 is used for providing power to the rotation of rotating shaft 6 on the one hand, and the angle that measuring recording rotating shaft 6 turns over is used for to rotating shaft 6 brake on the other hand and makes it be fixed on a certain position.Like this, under high wind speed, by the automatic adjusting of whole system, the angular displacement of adjusting vane can work on wind energy conversion system under bigger wind conditions; Otherwise, reducing in the process of design wind speed at wind speed, the angular displacement that the reverse process of blade is above-mentioned adapts with the corresponding interval of ambient wind velocity, stage by stage until normal working.
As shown in Figure 1, when wind speed just often, blade body 4 is in the nominal situation position, rotating shaft 6 is in the state that is performed mechanism 5 locking, wind energy conversion system normally moves, angular displacement this moment Ф is 90 °.
As shown in Figure 2, when the paranormal wind speed Applicable scope of wind speed, wind speed induction installation 1 passes to controller 2 with rate signal, controller 2 sends instruction, and command execution mechanism 5 removes the locking of countershaft 6, drives rotating shaft 6 then and rotates, the blade body 4 that links to each other with rotating shaft 6 is then along with rotating shaft 6 synchronous same angular turn, according to different wind speed, angular displacement Ф is corresponding angle, and command execution mechanism 5 countershafts 6 are realized locking then.
As shown in Figure 3, excessive when wind speed, when exceeding the tolerance range of blade body 4, then blade body 4 folds fully, and angular displacement this moment Ф is 0 °, and wind energy conversion system is shut down, and more helps protecting wind energy conversion system.
As shown in Figure 4, as preferred embodiment of the present utility model, there are three rotating shafts 6 to connect three blade bodies 4 respectively on the described wheel hub 3; Three blade bodies 4 are axis separately with rotating shaft AA ', BB ' and CC ' respectively, and downwind folds.The angle that actuator's 5 track record rotating shafts 6 turn over, the then angle that turns over of rotating shaft 6 angle that turns over of blade body 4 just.Like this, the angle of blade body 4 and wind energy conversion system horizontal axis will slowly reduce by 90 °, and promptly angular displacement Ф slowly reduces by 90 °.And along with the increase of wind speed, angular displacement Ф is not continuous generation, but wind speed is divided into several regions, and angular displacement Ф is the different constants in each wind speed zone.When wind speed when the proper functioning value rise to arrive a certain value, SC system controller 2 is sent instruction, actuator 5 is with rotating shaft 6 releases, drive rotating shaft 6 and rotate a certain set angle, locked then, blade body 4 is finished the operation that once changes angular displacement, wind energy conversion system can be under this wind friction velocity proper functioning; When wind speed rises once more, when reaching a certain value, actuator repeats above-mentioned work once more, finishes the change of angular displacement Ф.
As shown in Figure 5, angular displacement Ф is divided into 10 intervals from 90 ° to 0 °, considers that power is constant, calculating the maximum wind speed that the pairing blade of each angular displacement Ф can bear is V 0, 1.05V 0, 1.12V 0, 1.20V 0,, 1.30V 0,, 1.41V 0, 1.58V 0, 1.83V 0, 2.24V 0And 3.16V 0(wind speed surpasses 3.16V 0, angular displacement Ф is 0 o'clock, is equivalent to wind energy conversion system and shuts down, the working state that can generate electricity has 10 angular displacements).Therefore, the blade angle displacement has 10 working positions when regulating, and has guaranteed the sensitivity and the stability of system effectively.When wind speed reaches V 0The time, controller 2 is given an order, and rotating shaft 6 is performed mechanism's 5 releases, by initial position (angular displacement Ф is 90 °) continue to turn over 18 ° then blade body 4 also continue to turn over 18 °, angular displacement Ф has become 72 °, and then blade-section draws in, and actuator's 5 countershafts 6 brake and be locked then.Like this, the suitable wind speed of wind energy conversion system expands to 1.05V 0When wind speed rises once more above 1.05V 0The time, repeating the action of above-mentioned " release-rotation-brake-locked ", angular displacement Ф becomes 63 °, and the suitable wind speed of wind energy conversion system expands to 1.12V 0By that analogy.In like manner, when wind speed reduces, blade body 4 is along with the counter-rotating of rotating shaft 6 launches against the wind, and the working position when still drawing in blade is identical, just reversed in order, be that angular displacement Ф neither produce continuously, but when reaching a certain value along with wind speed, a certain angle is rotated in rotating shaft 6, drives blade body 4 and rotates and make angular displacement Ф increase to some in the above-mentioned value, along with wind speed further reduce be expanded to the normal position until blade body 4, angular displacement Ф then returns to 90 ° in turn interimly.Like this, wind-driven generator has returned to normal operating range again.By with adjusted, the utility model can make blade change and the step evolution rotation with wind speed under the condition that guarantees the work of pneumatic equipment blades made system stability, has offset wind speed and has become big influence to wind energy conversion system power, make wind energy conversion system power approximate constant, thereby enlarged the Applicable scope of wind speed.
In like manner, the utility model is not only applicable to divide ten intervals with the blade angle displacement, and is applicable to the situation that other is interval.
Such as the blade angle displacement being divided eight intervals, then this moment corresponding angular Ф descending being followed successively by: 90 °, 69 °, 60 °, 52 °, 45 °, 38 °, 30 °, 21 ° and 0 °, the maximum wind speed that the pairing blade of each angular displacement Ф this moment can bear is V 0, 1.07V 0, 1.15V 0, 1.26V 0, 1.41V 0, 1.63V 0, 2.00V 0And 2.83V 0
And for example the blade angle displacement is divided five intervals, then descending being followed successively by of corresponding angular Ф this moment: 90 °, 63 °, 51 °, 39 °, 27 ° and 0 °, the maximum wind speed that the pairing blade of each angular displacement Ф this moment can bear is V 0, 1.12V 0, 1.29V 0, 1.58V 0, 1.41V 0And 2.24V 0

Claims (4)

1. the novel leeward of an adjustable vane angular displacement is to the wind energy conversion system blade system, it is characterized in that: comprise the wind speed induction installation (1) that is installed in outside the cabin nearly wind side, be installed in the controller (2) that is electrically connected with wind speed induction installation (1) in the cabin in, the wheel hub (3) that is installed in the wind side far away cabin outside, the blade body (4) that is connected with wheel hub (3) by rotating shaft (6) and be installed in the actuator (5) that rotating shaft (6) both sides also are connected with it, described actuator (5) and controller (2) electrical connection.
2. the novel leeward of a kind of adjustable vane angular displacement according to claim 1 is to the wind energy conversion system blade system, it is characterized in that: have three rotating shafts (6) to connect three blade bodies (4) respectively on the described wheel hub (3), and blade body (4) is along with the synchronous same angular turn of rotating shaft (6).
3. the novel leeward of a kind of adjustable vane angular displacement according to claim 1 is to the wind energy conversion system blade system, it is characterized in that: make that by controller (2) control executing mechanism (5) rotation of rotating shaft (6) is not along with the increase and decrease of wind speed is rotated continuously, but rotating shaft (6) drives blade body (4), makes that the angle Ф between blade body (4) and the wind energy conversion system horizontal axis has fixing angle value.
4. the novel leeward of a kind of adjustable vane angular displacement according to claim 3 is to the wind energy conversion system blade system, it is characterized in that: angle Ф is divided into 10 intervals from 90 ° to 0 °, its fixing angle value is 90 °, 72 °, 63 °, 57 °, 51 °, 45 °, 39 °, 33 °, 27 °, 18 ° and 0 °.
CN2013200677817U 2013-02-05 2013-02-05 Novel down-wind wind machine vane system capable of adjusting vane angular displacement Withdrawn - After Issue CN203098141U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103114964A (en) * 2013-02-05 2013-05-22 西安交通大学 Downwind wind turbine blade system with angular displacement adjustable blades
CN105134481A (en) * 2015-08-14 2015-12-09 无锡市长江电器设备有限公司 Wind wheel structure of downwind wind driven generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103114964A (en) * 2013-02-05 2013-05-22 西安交通大学 Downwind wind turbine blade system with angular displacement adjustable blades
CN103114964B (en) * 2013-02-05 2015-11-25 西安交通大学 A kind of leeward of adjustable vane angular displacement is to wind energy conversion system blade system
CN105134481A (en) * 2015-08-14 2015-12-09 无锡市长江电器设备有限公司 Wind wheel structure of downwind wind driven generator

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130731

Effective date of abandoning: 20151125

C25 Abandonment of patent right or utility model to avoid double patenting