CN108266314B - A kind of H-type wind power generating set with vertical shaft with symmetrical split blade - Google Patents
A kind of H-type wind power generating set with vertical shaft with symmetrical split blade Download PDFInfo
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- CN108266314B CN108266314B CN201810314948.2A CN201810314948A CN108266314B CN 108266314 B CN108266314 B CN 108266314B CN 201810314948 A CN201810314948 A CN 201810314948A CN 108266314 B CN108266314 B CN 108266314B
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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
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- 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 present invention provides a kind of H-type wind power generating set with vertical shaft with symmetrical split blade, it is related to technical field of wind power generation, its blade is provided with windward area channel and leeward area channel far from one end of motor driven turntable, wherein, windward area channel and leeward area channel are symmetrical arranged, when blade is in windward area, the rotation of class barrel valve opens windward area channel, leeward area channel is closed, when blade is in lower subregion, the rotation of class barrel valve opens leeward area channel, windward area channel is closed, and then it realizes when blade is located at different wind areas, the opening and closing of slot is also different, it can guarantee vertical axis windmill in rotary course in this way, pressure face air-flow can blow to suction surface edge by slot, increase suction surface air flow power, postpone the generation of boundary-layer separation, it is combined using four-bar mechanism with class barrel valve, The purpose that the area Fen Feng symmetrically cracks is realized, the aeroperformance of H-type wind power generating set with vertical shaft vane airfoil profile is improved.
Description
Technical field
The present invention relates to technical field of wind power generation more particularly to a kind of H-type vertical axises with symmetrical split blade
Wind power generation plant.
Background technique
With the rapid development of the global economy, the fossil fuels such as a large amount of coal, oil and natural gas are consumed, so that entirely
Spherical surface faces unprecedented energy crisis and environmental threat, and the energy and environmental protection have become significant problem urgently to be resolved at present.
And wind energy is used as a kind of reproducible green clean energy resource, more and more people recognize to develop the importance of wind energy.
Wind power generation plant can be divided into horizontal axis wind generating device relative to the installation site on ground according to main shaft and hang down
D-axis wind power generation plant.Wind power generating set with vertical shaft with without yaw system, mechanical mechanism is simple the advantages that increasingly by
To the favor of people, but since its practical wind energy utilization is far below theoretical value, the enlargement of wind power generating set with vertical shaft
Obstruction is received with commercialized development.The main reason is that wind power generating set with vertical shaft, in rotary course, attack angle of blade is real
Shi Bianhua, when blade is under big angle of attack operating condition, flow separation can occur for the low-pressure area of blade surface, lead to profile lift system
Number decline, resistance coefficient rise.For the low problem of wind power generating set with vertical shaft wind energy utilization, people are improving aerofoil profile liter
Power has carried out a large amount of research in terms of increasing aerofoil profile lift resistance ratio.Wherein, phase early 1920s, Bates propose split
The concept of wing.The preliminary thought for problem of cracking is Boundary layer flow, i.e., (or is inhaled by reasonably blowing to aerofoil profile boundary-layer
Gas), increase (or reduction) energy so that boundary-layer segregation lag occurs and solves the problems, such as the stall under the big angle of attack.
The existing research cracked about aerofoil profile mostly concentrates in space flight aerofoil profile or horizontal axis wind generating device aerofoil profile,
Rarely have in wind power generating set with vertical shaft aerofoil profile and is related to；And the scheme of cracking studied is that one direction is cracked, and is unidirectionally opened
Seam scheme is not particularly suited for the actual condition of wind power generating set with vertical shaft, and concrete reason is as follows: wind power generating set with vertical shaft
The position of unidirectional slotted blade is as shown in Figure 1 in rotary course, wherein θ be blade azimuth angle, when azimuth angle theta be located at 0 °~
At 180 °, which is known as the windward area of wind wheel；When θ is located at 180 °~360 °, the referred to as leeward area of wind wheel；For the single wing
For type, the one side that wind directly acts on is known as the pressure face of aerofoil profile, and another side is known as the suction surface of aerofoil profile, it can be seen that works as leaf
When piece is in different wind areas, the pressure face and suction surface of aerofoil profile are variations, and the thinking for scheme of cracking is to make by cracking
The air flow direction suction surface of pressure face, but due to the particularity of vertical axis windmill operating condition, the existing scheme unidirectionally cracked
It can only work in an area Ge Feng, cause the Airfoil Aerodynamic Performance by promotion of cracking limited, it is urgently to be resolved to become people
Technical problem.
Summary of the invention
The present invention provides a kind of H-type wind power generating set with vertical shaft with symmetrical split blade, it is intended to using up and down
The technical solution that wind area symmetrically cracks guarantees that pressure face air-flow can blow to suction by slot during wind wheel rotates a circle
The purpose of delay boundary-layer separation is realized at face edge.
In order to achieve the above objectives, the present invention provides a kind of H-type vertical axis wind power generation dress with symmetrical split blade
It sets, including main shaft, the generator being mounted on the main shaft, the motor for being mounted on the main shaft upper end, fixes with the main shaft
The support rod of connection, the blade being fixedly connected with the support rod, the class barrel valve being mounted on the blade and class circle
Adjusting push rod that column valve is fixedly connected, the push rod hinged with the adjusting push rod are pushed away for the hinged push rod and the adjusting
The bolt of bar, the motor driven turntable being fixed on the main shaft and the support rod for fixing the blade, wherein described push away
The other end of bar is fixed on the motor driven turntable, and the blade is provided with far from one end of the motor driven turntable
The channel Feng Qu and leeward area channel, wherein windward area channel and leeward area channel are symmetrical arranged, and the windward area is logical
The connectivity part in road and leeward area channel is provided with class barrel valve installation cavity, and the diameter of the class barrel valve installation cavity is greater than institute
State the width in windward area channel and leeward area channel, the center line of the center line in windward area channel and the blade it
Between angle be 30 °~60 °, the angle between the center line in leeward area channel and the center line in windward area channel is
60 °~90 °.
Optionally, the angle between the center line in windward area channel and the center line of the blade is 50 °, under described
Angle between the center line in the channel Feng Qu and the center line in windward area channel is 80 °.
Optionally, windward area channel and leeward area channel is of same size, windward area channel and described
The center line symmetrical setting of the relatively described blade in leeward area channel.
Optionally, the center of the class barrel valve installation cavity to the distance between the left end of the blade and the blade
Ratio between length is 1:8.
Optionally, the motor and the main shaft rotate synchronously, and the linkage of the motor and the motor driven turntable connects
It connects.
Optionally, the H-type wind power generating set with vertical shaft further includes anemoscope, and the anemoscope real-time detection wind direction is simultaneously
Determine upper leeward area locating for the blade.
Optionally, the H-type wind power generating set with vertical shaft includes 3 identical blades, and 3 identical described
Blade is in that 120 ° of angle radial symmetrics are arranged at the main shaft one week between each other.
The embodiment of the present invention at least has following advantageous effects:
A kind of H-type wind power generating set with vertical shaft with symmetrical split blade of the embodiment of the present invention at work,
Upper leeward area locating for the blade of H-type wind power generating set with vertical shaft is determined by anemoscope, and signal is passed into motor, electricity
Machine matches wind speed round by adjusting revolving speed, and pushrod movement is driven by positive and negative rotation, and push rod drives adjusting push rod to swing, from
And class barrel valve is rotated, and due to there was only a channel on class barrel valve, when blade is in windward area, the rotation of class barrel valve
Open windward area channel, leeward area channel is closed, and when blade is in lower subregion, the rotation of class barrel valve makes leeward area channel
It opens, windward area channel is closed, and then is realized when blade is located at different wind areas, and the opening and closing of slot is also different, in this way can be with
Guarantee vertical axis windmill in rotary course, pressure face air-flow can blow to suction surface edge by slot, increase suction surface
Air flow power, the generation of delay boundary-layer separation, is combined with class barrel valve using four-bar mechanism, it is symmetrical to realize the area Fen Feng
The purpose cracked improves the aeroperformance of H-type wind power generating set with vertical shaft vane airfoil profile.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the position view that unidirectional split blade rotates a circle in prior art；
Fig. 2 is a kind of H-type wind power generating set with vertical shaft with symmetrical split blade provided in an embodiment of the present invention
Overall structure figure；
Fig. 3 is a kind of H-type wind power generating set with vertical shaft with symmetrical split blade provided in an embodiment of the present invention
Assembly structure figure；
Fig. 4 is a kind of H-type wind power generating set with vertical shaft with symmetrical split blade provided in an embodiment of the present invention
Partial enlarged view；
Fig. 5 is the structural schematic diagram of blade provided in an embodiment of the present invention；
Fig. 6 is the aerofoil profile ascending aorta banding figure of blade provided in an embodiment of the present invention；
Fig. 7 is the airfoil surface pressure coefficient distribution map of blade provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Below in conjunction with 2~attached drawing of attached drawing 7, technical solution of the present invention is described in detail with specific embodiment.
With reference to shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of H-type with symmetrical split blade of the embodiment of the present invention is hung down
D-axis wind power generation plant, including main shaft 3, the generator being mounted on main shaft 31, the motor 4 for being mounted on 3 upper end of main shaft and master
Support rod 5 that axis 3 is fixedly connected, the blade 10 being fixedly connected with support rod 5, the class barrel valve 6 being mounted on blade 10 and class
What barrel valve was fixedly connected adjusted push rod 7, with adjust the hinged push rod 5 of push rod 7, for hinged push rod 5 and adjust inserting for push rod 7
Pin 9, the motor driven turntable 8 being fixed on main shaft 3 and the support rod 2 for fixed blade 10, wherein the other end of push rod 5
It is fixed on motor driven turntable 8, blade 10 is provided with windward area channel 101 and leeward far from one end of motor driven turntable 8
Area channel 102, wherein windward area channel 101 and leeward area channel 102 are symmetrical arranged, windward area channel 101 and leeward area channel
102 connectivity part is provided with class barrel valve installation cavity 103, and the diameter of class barrel valve installation cavity 103 is greater than 101 He of windward area channel
The width in leeward area channel 102, the angle between the center line in windward area channel 101 and the center line of blade 10 is 30 °~
60 °, the angle between the center line in leeward area channel 102 and the center line in windward area channel 101 is 60 °~90 °.
Specifically, two support rods 2 match, and the both ends of a blade 10 are fixed respectively shown in referring to figs. 2 and 3
On generator 1 and motor driven turntable 8 namely the end of two support rods 2 is mutually solid with the top and bottom of blade 10 respectively
It is fixed.
Further, refering to what is shown in Fig. 5, angle α between the center line in windward area channel 101 and the center line of blade 10
It is 30 °~60 °, the angle β between the center line in leeward area channel 102 and the center line in windward area channel 101 is 60 °~90 °.
Wherein, it is preferred that the angle α between the center line in windward area channel 101 and the center line of blade 10 is 50 °, leeward area channel
Angle β between 102 center line and the center line in windward area channel 101 is 80 °.When windward area channel 101 center line with
Angle α between the center line of blade 10 is set as 50 °, the center line in leeward area channel 102 and the center in windward area channel 101
Angle β between line is set as 80 °, can be with either when blade is in windward area, or when blade is in lower subregion
It realizes when blade is located at different wind areas, the opening and closing of slot is also different, but also can guarantee that vertical axis windmill is rotating through
Cheng Zhong, pressure face air-flow can blow to suction surface edge by slot, and suction surface air flow power is best at this time, boundary-layer point
From carryover effects it is best, can sufficiently promote the aeroperformance of H-type wind power generating set with vertical shaft vane airfoil profile.
Further, refering to what is shown in Fig. 5, windward area channel 101 and leeward area channel 102 it is of same size, windward area is logical
The center line A-A of the relative vane in road 101 and leeward area channel 102 is symmetrical arranged.Wherein, windward area channel 101 and leeward area
The center line A-A of the relative vane in channel 102, which is symmetrical arranged, can guarantee either when blade is in windward area, or work as leaf
When piece is in lower subregion, the aeroperformance of H-type wind power generating set with vertical shaft vane airfoil profile is close, guarantees H-type vertical-shaft wind
The main shaft uniform force of power generator, and then guarantee the stable and functional reliability of blade.
Further, motor 4 and main shaft 3 rotate synchronously, and are keyed between motor 4 and motor driven turntable 8.Motor 4
Rotation can drive motor driven turntable 8 to rotate, and one end of push rod 5 is bolted on motor driven turntable 8, other end
It is connected with push rod 7 is adjusted, adjusts push rod 7 and fitted together with bolt 9 by interference fit, the rotation of push rod 7 can drive slotting
Pin 9 rotates synchronously, and bolt 9 is connected by slot with class barrel valve 6, and the rotation of class barrel valve 6 is synchronous with the holding of bolt 9.
Moreover, a kind of H-type wind power generating set with vertical shaft with symmetrical split blade of the embodiment of the present invention also wraps
Anemoscope 11 is included, 11 real-time detection wind direction of anemoscope simultaneously determines that upper leeward area locating for blade 10 namely anemoscope 11 can sentence
Disconnected blade 10 is in windward area or leeward area.
Further, shown in referring to figs. 2 and 3, a kind of H-type with symmetrical split blade of the embodiment of the present invention is hung down
D-axis wind power generation plant includes 3 identical blades 10, and 3 identical blades 10 are radial in 120 ° of angles between each other
It is symmetricly set on one week of main shaft 3.
A kind of course of work of H-type wind power generating set with vertical shaft with symmetrical split blade of the embodiment of the present invention
It is as follows: at work, upper leeward area locating for the blade of H-type wind power generating set with vertical shaft to be determined by anemoscope, and will letter
Motor number is passed to, motor matches wind speed round by adjusting revolving speed, and pushrod movement is driven by positive and negative rotation, and push rod drives
It adjusts push rod to swing, to make class barrel valve rotate, due to there was only a channel on class barrel valve, when blade is in windward area
When, the rotation of class barrel valve opens windward area channel, and leeward area channel is closed, when blade is in lower subregion, class barrel valve
Rotation open leeward area channel, windward area channel is closed, and then is realized when blade is located at different wind areas, and slot is opened
Also difference is closed, can guarantee vertical axis windmill in this way in rotary course, pressure face air-flow can blow to suction by slot
Face edge, increases suction surface air flow power, and the generation of delay boundary-layer separation is mutually tied using four-bar mechanism and class barrel valve
It closes, realizes the purpose that the area Fen Feng symmetrically cracks, improve the aeroperformance of H-type wind power generating set with vertical shaft vane airfoil profile.
Further to solve under the big angle of attack, the boundary-layer segregation phenomenon of the aerofoil profile of H-type wind power generating set with vertical shaft, first
It need to determine aerofoil profile critical angle of attack, i.e., the angle of attack locating for aerofoil profile, exemplary when stall has just taken place, imitative by ANSYS FLUENT
Really obtain NACA0012 aerofoil profile under the conditions of reynolds number Re=1.8 × 105 ascending aorta banding variation diagram as shown in fig. 6, can by Fig. 6
Know, when the aerofoil profile angle of attack is 10 °, the lift coefficient decline of aerofoil profile, it is believed that 10 ° of the angle of attack critical angle of attack for aerofoil profile.
Further, it is position of reasonably being cracked, in the implementation of the present invention, need to analyzes when the angle of attack is 10 °
When, the pressure coefficient distribution map of aerofoil profile.Airfoil surface pressure coefficient distribution map is obtained by emulation as shown in fig. 7, can be with by Fig. 7
Find out, when aerofoil profile is in x/c > 0.05, the pressure coefficient difference of airfoil suction side and pressure face starts to reduce rapidly, shows stall
Take place；When aerofoil profile is in 0.15 < x/c < 0.8, the pressure coefficient value of suction surface approaches a constant value, while the pressure of pressure face
Force coefficient slowly declines, and shows that the boundary-layer separation in the region has occurred and that aerofoil profile enters stall conditions；After x/c > 0.8, inhale
Power face is equal with pressure face pressure coefficient approach, and reaches pressure at aerofoil profile trailing edge in x/c=1.By to pressure coefficient point
Layout analysis is it is found that the position of boundary-layer separation occurs for aerofoil profile between 0.05 < x/c < 0.15.Since burble point present position becomes
It is smaller to change range, comprehensively considers various factors, it is position of cracking at x=1/8c that the claimed technical solution of the application, which is chosen,
I.e. in the claimed technical solution of the application, it is preferred that the center of class barrel valve installation cavity 103 is between the left end of 10 blades
Distance and blade 10 length between ratio be 1:8.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of H-type wind power generating set with vertical shaft with symmetrical split blade, which is characterized in that the H-type vertical axis
Wind power generation plant include main shaft, the generator being mounted on the main shaft, the motor for being mounted on the main shaft upper end, with it is described
Support rod that main shaft is fixedly connected, the blade being fixedly connected with the support rod, the class barrel valve being mounted on the blade, with
What the class barrel valve was fixedly connected adjusts push rod, the push rod hinged with the adjusting push rod, for the hinged class barrel valve
With the bolt for adjusting push rod, the motor driven turntable that is fixed on the main shaft and support for fixing the blade
Bar, wherein the other end of the push rod is fixed on the motor driven turntable, the blade is far from the motor driven turntable
One end be provided with windward area channel and leeward area channel, wherein windward area channel and leeward area channel are symmetrically set
It sets, the connectivity part in windward area channel and leeward area channel is provided with class barrel valve installation cavity, the class barrel valve peace
The diameter behaveing affectedly is greater than the width in windward area channel and leeward area channel, the center line in windward area channel and institute
Stating the angle between the center line of blade is 30 °~60 °, in the center line in leeward area channel and windward area channel
Angle between heart line is 60 °~90 °.
2. H-type wind power generating set with vertical shaft according to claim 1, which is characterized in that in windward area channel
Angle between heart line and the center line of the blade is 50 °, the center line in leeward area channel and windward area channel
Center line between angle be 80 °.
3. H-type wind power generating set with vertical shaft according to claim 1, which is characterized in that windward area channel and institute
State the of same size of leeward area channel, the center line pair of the relatively described blade in windward area channel and leeward area channel
Claim setting.
4. described in any item H-type wind power generating set with vertical shaft according to claim 1~3, which is characterized in that the class cylinder
The center of valve installation cavity to the ratio of the distance between the left end of the blade between the length of the blade be 1:8.
5. H-type wind power generating set with vertical shaft according to claim 4, which is characterized in that the motor and the main shaft
It rotates synchronously, is keyed between the motor and the motor driven turntable.
6. H-type wind power generating set with vertical shaft according to claim 4, which is characterized in that the H-type vertical-shaft wind hair
Electric installation further includes anemoscope, and the anemoscope real-time detection wind direction simultaneously determines upper leeward area locating for the blade.
7. H-type wind power generating set with vertical shaft according to claim 4, which is characterized in that the H-type vertical-shaft wind hair
Electric installation includes 3 identical blades, and 3 identical blades are in that 120 ° of angle radial symmetrics are set between each other
It sets at the main shaft one week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314948.2A CN108266314B (en) | 2018-04-10 | 2018-04-10 | A kind of H-type wind power generating set with vertical shaft with symmetrical split blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314948.2A CN108266314B (en) | 2018-04-10 | 2018-04-10 | A kind of H-type wind power generating set with vertical shaft with symmetrical split blade |
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| Publication Number | Publication Date |
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| CN108266314A CN108266314A (en) | 2018-07-10 |
| CN108266314B true CN108266314B (en) | 2019-05-21 |
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| CN201810314948.2A Expired - Fee Related CN108266314B (en) | 2018-04-10 | 2018-04-10 | A kind of H-type wind power generating set with vertical shaft with symmetrical split blade |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111734577B (en) * | 2020-07-07 | 2023-05-02 | 中国华能集团有限公司广西分公司 | Slit type wind turbine blade device and slit method |
| CN118246820B (en) * | 2024-05-30 | 2024-09-24 | 中国电建集团西北勘测设计研究院有限公司 | Wind resource assessment and generating capacity calculation method and system for upstream and downstream wind farms |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101915218B (en) * | 2010-08-20 | 2012-05-02 | 张�杰 | Wind power generating set with vertical shaft |
| KR101391593B1 (en) * | 2012-05-01 | 2014-05-07 | 주식회사 웨스텍 | Pitch control apparatus of vertical axis wind power generator using hydraulic damper |
| KR101700157B1 (en) * | 2015-07-30 | 2017-01-26 | 주식회사 삼영이엔지 | Vertical shaft windmill |
| CN106762398B (en) * | 2017-01-16 | 2024-01-12 | 中国石油大学(华东) | H-shaped vertical axis wind power generation device |
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