CN101699062A - Guide vane type lifting vertical shaft wind wheel - Google Patents

Guide vane type lifting vertical shaft wind wheel Download PDF

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Publication number
CN101699062A
CN101699062A CN200910185018A CN200910185018A CN101699062A CN 101699062 A CN101699062 A CN 101699062A CN 200910185018 A CN200910185018 A CN 200910185018A CN 200910185018 A CN200910185018 A CN 200910185018A CN 101699062 A CN101699062 A CN 101699062A
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CN
China
Prior art keywords
wind wheel
guide
guide vane
vane
blade
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Application number
CN200910185018A
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Chinese (zh)
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CN101699062B (en
Inventor
赵振宙
郑源
赵振宁
霍志红
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Nanjing Hehai Technology Co Ltd
Hohai University HHU
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Nanjing Hehai Technology Co Ltd
Hohai University HHU
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Priority to CN2009101850182A priority Critical patent/CN101699062B/en
Publication of CN101699062A publication Critical patent/CN101699062A/en
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Publication of CN101699062B publication Critical patent/CN101699062B/en
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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
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

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Abstract

The invention discloses a guide vane type lifting vertical shaft wind wheel, comprising a wind wheel shaft and two or more than two lifting vanes which are arranged on the wind wheel shaft; a bracket which can rotate around the wind wheel shaft is also arranged on the wind wheel shaft, the bracket is a straight line bracket which can penetrate through the axis of the wind wheel shaft, two guide vanes and a tail vane which causes the guide vanes to be stillstand relatively are arranged on the bracket, the two guide vanes are fixed at two ends of the bracket and the directions of the guide ends of two guide vanes are the same, and the plane of the center of the tail vane is vertical to the bracket. Compared wit the prior art, two guide vanes and two or more than two lifting vanes are arranged on the wind wheel shaft at the same time, and by utilizing the two guide vanes to guide direction, the wind energy utilization rate can be improved by 2 percent compared by the existing lifting vertical shaft wind wheel.

Description

A kind of guide vane type lifting vertical shaft wind wheel
Technical field
The present invention relates to the technology and equipment of guide vane type lifting vertical shaft wind wheel.
Background technique
At present, the device of collecting folk songs of most of wind energy conversion system is a horizontal axis rotor.Horizontal axis rotor adopts the lift-type blade, and rotating speed is very fast, and wind energy utilization is higher, the technology comparative maturity, thereby be widely used.But the generator of horizontal axis rotor need place the high-altitude, and its noise is higher relatively, and also there is the driftage loss in power, and these all are the insoluble problems of horizontal-shaft wind turbine.
Compare with horizontal axis rotor, type lifting vertical shaft wind wheel then rotating speed is slower, and noise is lower; Generator can place ground, is convenient to safeguard; Need not wind, do not have the driftage power loss.But the wind energy transformation rate of lift vertical shaft wind energy conversion system is lower than horizontal axis slightly, thereby development is slower, and utility ratio is lower.
From the aerodynamics analysis of type lifting vertical shaft wind wheel blade as can be seen, blade is in 360 ° of angle ranges, braking torque 270 ° and 90 ° two positions is negative value, and the braking torque of its near zone is also all lower, and this shows that the blade when moving to this two positions is in braking state.This also just becomes a lower major reason of lifting wind wheel power coefficient.
Summary of the invention
Technical problem to be solved by this invention is to be raising lifting wind wheel wind energy utilization, and a kind of straight blade lifting type vertical axis rotor that has the stator blade that provides.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of straight blade lifting wind wheel of stator formula, comprise rotor shaft and be arranged on 2 or 2 above lift-type blades on the described rotor shaft, also being provided with one on described rotor shaft can be around the support of rotor shaft rotation, described support is the straight line support that passes the rotor shaft axle center, 2 guide vanes are set on described support and make described guide vane be in static relatively tail vane, described two guide vanes are fixed on the two ends of described support, and the guide end direction of two guide vanes in opposite directions, and plane, place, described tail vane center is vertical with described support.
The guide end upper surface trailing edge elongation line of described guide vane is vertical with described rudder arm, and the guide end upper surface trailing edge elongation line of described guide vane is parallel with described support.
Described tail vane is one, and the middle part of support is set.
Described tail vane is two, is symmetricly set on the both sides of carriage center.
Described lift-type blade degree of compaction σ is 0.13~0.5, σ=2NC/D, and wherein C is the blade chord length, and N is the number of blade, and D is a lift-type blade rotating diameter.
Described tail vane brachium L is greater than wind wheel rotating diameter D, and described tail vane area A satisfies, A>ht, and h is the stator blade height here, t is the stator chord length.
Compared with prior art, the beneficial effect of guide vane type lifting vertical shaft wind wheel of the present invention is:
1,2 guide vanes and the lift-type blade more than 2 or 2 are being set simultaneously on the rotor shaft, are utilizing the guiding of two stator blades, can make wind energy utilization higher by 2% than existing type lifting vertical shaft wind wheel to wind direction.
2, the angle of attack is the angle of the relative velocity vector and the blade string of a musical instrument.The angle of attack is big more within the specific limits, and the braking torque of wind wheel is big more.Two guide vanes are in two positions of lift force blade angle of attack minimum respectively, utilize the change wind direction to increase the attack angle of blade of this position, thereby make the integral power square of wind wheel, under the condition that rotating speed does not change, the type lifting vertical shaft wind wheel that does not have guide vane increases to some extent.
3, the lift-type blade is by the aerodynamic-lift rotary driving.Guide vane is then by being come box haul to adjust the spatial position by the moment of tail vane transmission, make guide vane all be in 90 ° and 270 ° of positions of lift-type blade revolution space all the time, thoroughly eliminated the negative moment phenomenon of former type lifting vertical shaft wind wheel blade 90 ° and 270 ° under any wind direction.
4, guide vane can be caught more wind, and by changing wind direction, makes itself and the vertical or near normal of lift-type blade movement direction, makes the lift-type blade rise to peak in the braking torque of this near zone from minimum.
Description of drawings
Fig. 1 is the vertical axis rotor schematic representation that stator formula of the present invention has two lift force blades.
Fig. 2 is the vertical axis rotor schematic top plan view that stator formula of the present invention has three lift force blades
Fig. 3 is a stator blade structure schematic representation of the present invention.
Blade was at the stressed schematic representation of 90 ° of positions when Fig. 4 was no stator
Fig. 5 is the merit angle schematic representation that stator blade of the present invention acts on lift force blade.
Wherein: 1 rotor shaft; 2 lift-type blades; 3 guide vanes; 4 tail vanes; 5 rudder arms; 6 bearings; 7 crossbeams; 8 supports; 9 blade wing chords.
Embodiment
1,, the present invention is elaborated below in conjunction with accompanying drawing.As shown in Figure 1, guide vane type lifting wind wheel of the present invention comprises rotor shaft 1, at lift- type blade 2 and 2 stator blades 3 of being equipped with on the rotor shaft 1 more than 2 or 2.Guide vane 3, tail vane 4, rudder arm 5 and support 8 are formed a rotatable motion, and its rotation is driven by tail vane 4.Behind the change of the wind, tail vane 4 can be Zhang Ping's plate or two ends symmetrical structure, and tail vane 4 wind-engagings make its exhibition consistent with wind direction to all the time, thereby make two guide vanes 3 be in a static relatively state all the time to drag effect.Lift force blade 2, support 6 are formed another rotating machinery with rotor shaft 1, and lift force blade 2 provides power by aerodynamic-lift and rotates.Two rotating machinerys are connected by two bearing 7 transition, thereby motion does not interfere with each other between the two.
2, as shown in Figure 2, tail vane 4 exhibitions under the effect of tail vane 4, can guarantee that two stators 3 are in 90 ° and 270 ° of positions of wind wheel all the time to vertical with guide vane 3 lines.As shown in Figure 3, after guide vane 3 guiding, 90 ° change takes place in wind direction.
3, when the change of the wind before the wind wheel, lift-type blade 2 is not limited by wind direction, and continues rotation.Wind produces resistance to tail vane 4, and by rudder arm 8 carry-over moments, thereby drive 3 motions of two guide vanes, in time adjust the position, make it be in 90 ° and 270 ° of positions all the time respectively.
4, as shown in Figure 4, in triangle of velocity vectors, when wind direction and wind wheel were cut line of velocity attitude when no guide vane 3, the angle of attack was 0 °, this moment the wind wheel backward motion, lift is 0, makes a concerted effort to be resistance R.As shown in Figure 5, behind the installation guide vane 3, wind acts on the lift-type blade 2 of 90 ° of positions after guide vane 3 guides.According to the triangle of velocity vectors principle, by wind vector U perpendicular to blade chord length wind direction, with the wind wheel linear velocity vector V stack that is parallel to the chord length wind direction, the relative velocity vector W that forms, with 9 one-tenth one non-0 ° of angle of attack of blade wing chord, changed the original state of lift-type blade 2 at 90 ° and the 0 ° of angle of attack in 270 ° of positions.When the angle of attack was α, the lift of generation was S, and resistance is R, and braking torque increases.Stressed similar to 90 ° of positions, can produce same effect 270 ° of positions.
The present invention is a guide vane type lifting vertical shaft wind wheel, is made up of lift-type blade 2 and guide vane 3, and wherein guide vane 3 is constantly adjusted the position under the effect of tail vane 4, and the relative position that remains on wind wheel revolution space interior 90 ° and 270 ° does not change.The wind direction of lift force blade 2 had increased the vane aerodynamic angle of attack near stator 3 had changed 90 ° and 270 °, had increased braking torque, had reached the effect that improves the wind energy transformation rate of wind wheel.

Claims (6)

1. guide vane type lifting vertical shaft wind wheel, comprise rotor shaft (1) and be arranged on 2 or 2 above lift-type blades (2) on the described rotor shaft (1), it is characterized in that: also being provided with one on described rotor shaft (1) can be around the support (8) of rotor shaft (1) rotation, described support is the straight line support that passes rotor shaft (1) axle center, 2 guide vanes (3) are set on described support (8) and make described guide vane (3) be in static relatively tail vane (4), described two guide vanes (3) are fixed on the two ends of described support (8), and the guide end direction of two guide vanes (3) in opposite directions, and plane, described tail vane (4) place, center is vertical with described support (8).
2. guide vane type lifting vertical shaft wind wheel according to claim 1, it is characterized in that: the wind inlet end upper surface trailing edge elongation line of described guide vane (2) is vertical with described support (8), and the guide end upper surface trailing edge elongation line of described guide vane (2) is parallel with described support (8).
3. guide vane type lifting vertical shaft wind wheel according to claim 1 and 2 is characterized in that: described tail vane (4) is one, and the middle part of support (8) is set.
4. guide vane type lifting vertical shaft wind wheel according to claim 1 and 2 is characterized in that: described tail vane (4) is two, is symmetricly set on the both sides at support (8) center.
5. guide vane type lifting vertical shaft wind wheel according to claim 1 and 2 is characterized in that: described lift-type blade (2) degree of compaction σ is 0.13~0.5, σ=2NC/D, and wherein C is the blade chord length, and N is the number of blade, and D is a lift-type blade rotating diameter.
6. guide vane type lifting vertical shaft wind wheel according to claim 3 is characterized in that: described tail vane (4) brachium L is greater than wind wheel rotating diameter D, and described tail vane (4) area A satisfies, A>ht, and h is the stator blade height here, t is the stator chord length.
CN2009101850182A 2009-10-28 2009-10-28 Guide vane type lifting vertical shaft wind wheel Expired - Fee Related CN101699062B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009101850182A CN101699062B (en) 2009-10-28 2009-10-28 Guide vane type lifting vertical shaft wind wheel

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Application Number Priority Date Filing Date Title
CN2009101850182A CN101699062B (en) 2009-10-28 2009-10-28 Guide vane type lifting vertical shaft wind wheel

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CN101699062A true CN101699062A (en) 2010-04-28
CN101699062B CN101699062B (en) 2012-02-22

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305182A (en) * 2011-08-08 2012-01-04 河海大学常州校区 Vertical axis wind turbine (VAWT) with support bars with variable pitch angle blades
CN102400854A (en) * 2011-11-02 2012-04-04 浙江大学 Vertical axis wind turbine
CN103883481A (en) * 2014-03-27 2014-06-25 河海大学 Guide blade type straight blade lift force wind wheel
CN104976054A (en) * 2015-08-03 2015-10-14 覃诗龙 Vertical axis wind turbine
CN105114246A (en) * 2015-07-13 2015-12-02 河海大学 Method for amplifying wind power of vertical shaft type fan and vertical shaft type fan with wind power amplification function
CN113137340A (en) * 2021-05-12 2021-07-20 郑州亨特利电子科技有限公司 Squirrel-cage wind-driven generator
CN115263662A (en) * 2022-07-15 2022-11-01 山东大学 Multi-rotor vertical shaft fan with rotatable support frame

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305182A (en) * 2011-08-08 2012-01-04 河海大学常州校区 Vertical axis wind turbine (VAWT) with support bars with variable pitch angle blades
CN102400854A (en) * 2011-11-02 2012-04-04 浙江大学 Vertical axis wind turbine
CN103883481A (en) * 2014-03-27 2014-06-25 河海大学 Guide blade type straight blade lift force wind wheel
CN105114246A (en) * 2015-07-13 2015-12-02 河海大学 Method for amplifying wind power of vertical shaft type fan and vertical shaft type fan with wind power amplification function
CN104976054A (en) * 2015-08-03 2015-10-14 覃诗龙 Vertical axis wind turbine
CN113137340A (en) * 2021-05-12 2021-07-20 郑州亨特利电子科技有限公司 Squirrel-cage wind-driven generator
CN113137340B (en) * 2021-05-12 2022-12-06 焦作市制动器开发有限公司 Squirrel-cage wind-driven generator
CN115263662A (en) * 2022-07-15 2022-11-01 山东大学 Multi-rotor vertical shaft fan with rotatable support frame

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