CN106321366A - Vertical axis wind machine tower of fractal structure - Google Patents
Vertical axis wind machine tower of fractal structure Download PDFInfo
- Publication number
- CN106321366A CN106321366A CN201610882462.XA CN201610882462A CN106321366A CN 106321366 A CN106321366 A CN 106321366A CN 201610882462 A CN201610882462 A CN 201610882462A CN 106321366 A CN106321366 A CN 106321366A
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- tower
- pylon
- fractal
- vertical axis
- blades
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E10/728—Onshore wind turbines
Abstract
The invention relates to a vertical axis wind machine tower of a fractal structure. The vertical axis wind machine tower comprises a cylindrical thin-wall tower body, an upper supporting frame, a lower supporting frame and blades. Fractal holes are evenly distributed in the positions, between the upper supporting frame and the lower supporting frame, around the tower body in an arrayed manner, so that one part of wind of the upstream blades penetrates the fractal holes to damage falling-off vortex of the upstream blades of the tower and wake flow vortex of the downstream portion of the tower, and therefore vibration of the tower, interaction between the blades and the tower and the agitating function of the tower on the downstream blades are weakened. Reinforcing joints are arranged between the upper-layer fractal hole structure and the lower-layer fractal hole structure and used for overcoming reduction of the tower strength caused by the fractal holes. According to the vertical axis wind machine tower, interaction between the blades and the tower and the agitating function of the tower on the downstream blades can be weakened, therefore, the operational stability of a wind machine is improved, power losses are reduced, and the wind energy utilization rate is increased. The vertical axis wind machine tower is simple in structure, a mechanism for weakening interaction between the tower and the blades is easy to achieve, and on the premise of guaranteeing the strength and rigidity of the tower, by means of the fractal structure, materials are saved, and cost is reduced.
Description
Technical field
The present invention relates to a kind of vertical axis windmill pylon, especially one and can weaken vertical axis windmill pylon and leaf
Downstream blade is agitated the vertical axis windmill pylon of the fractal structure of effect by the interphase interaction of sheet and pylon.
Background technology
Vertical axis windmill Stability Analysis of Structures is reliable, manufacturing cost is relatively low, wind energy utilization is higher, aerodynamic noise is little and
More and more wider without making it apply the advantages such as wind apparatus.
Vertical axis windmill pylon is mainly cylindrical shape thin-wall construction at present.In impeller rotary course, the angle of blade
Being continually changing, the interaction of blade and pylon not only changes the situation of streaming of pylon and blade, and to pylon and blade
Exciting effect the most correspondingly increase.For vertical axis windmill, the cylindrical pylon cross-sectional area at center is relatively big, so blade
And between pylon, there is the strongest interference effect.The blade of upstream, when diverse location, can produce different size of Shedding Vortex
And tail loss, effect is agitated in the pylon generation to downstream.Equally, the blade in pylon downstream also can be produced by the pylon at center
Agitate effect.
Through retrieval, difform cross section outer ring is the most mostly used to weaken tail vortex and tower shadow effect, such as " one
Plant tower cylindrical shell of wind generating set " (publication number: CN 202023701 U), by the cross section outer ring with pit and convex closure
Structure reduces wake flow vortex.After air-flow walks around such tube structure, turning and twist in advance, the turbulent flow in flowing can increase, and makes
Air-flow adheres to the area of flowing on cylinder and increases, and boundary layer separation is postponed, and tail vortex region reduces.But in normal work
Time, the pit of pylon windward side can be by bigger resistance so that pylon entirety stress increases on the contrary, and vibration and noise are therewith
Increase, be unfavorable for wind energy conversion system safe and stable operation.Then, retain the original smooth, cylindrical peripheral surface of pylon, reasonably beat on pylon
One component shape hole, is the effective means of a kind of interphase interaction weakening vertical axis windmill pylon and blade.
Summary of the invention
The present invention provides the vertical axis windmill pylon of a kind of fractal structure, to solve the interaction between blade and pylon
And downstream blade is agitated the problems such as effect by pylon, thus improve wind energy conversion system operation stability, reduce its power loss, improve
Wind energy utilization.
For solving above-mentioned technical problem, the technical solution used in the present invention is: the vertical axis windmill of a kind of fractal structure
Pylon, including the pylon main body of cylinder thin-walled, upper and lower bracing frame, blade, pylon body top installs leaf by upper and lower bracing frame
Sheet, the described pylon main body surrounding uniform array between upper and lower bracing frame is distributed fractal hole, makes the wind through upstream blade
A part passes from fractal hole, destroys Shedding Vortex and the wake flow vortex in pylon downstream of pylon upstream blade, thus weakens tower
Downstream blade is agitated effect by interaction and pylon between the vibration of frame self, blade and pylon；The fractal hole of two-layer up and down
Reinforcement joint is set between structure, causes the reduction of tower frame strength for making up fractal hole.
Each fractal hole is square.Described joint of strengthening is for circular.
Beneficial effects of the present invention: by being distributed in the fractal hole on pylon top, makes the wind through upstream blade a part of
Passing from the fractal hole of pylon, the wind of this part can destroy the Shedding Vortex of pylon upstream blade and the wake flow rotation in pylon downstream
Whirlpool, thus weaken the interaction between the vibration of pylon self, blade and pylon and downstream blade is agitated effect by pylon；Two
It is provided with reinforcement joint between layer Fractal Pore Structure and causes the reduction of tower frame strength making up fractal hole.The present invention is not required to additional structure,
Save material, simple in construction, it is easy to accomplish.
Accompanying drawing explanation
Fig. 1 is the vertical axis windmill pylon structure schematic diagram of the fractal structure of the present invention；
Fig. 2 is the pylon main body half sectional view of the present invention；
Fig. 3 is the pylon main body partial sectional view of the present invention；
Fig. 4 is the vertical axis windmill pylon structure top view of the fractal structure of the present invention；
Fig. 5 is the Fractal Pore Structure schematic diagram of the present invention；
Fig. 6 is the vertical axis windmill pylon fundamental diagram of the fractal structure of the present invention；
Wherein: (a) is that (b) is for there being fractal hole without fractal hole.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is further described, but the present invention should not limited with this
The protection domain of patent.
As shown in Figures 1 to 5, the vertical axis windmill pylon of a kind of fractal structure, including the pylon main body of cylinder thin-walled
1, fractal hole 2, reinforcement joint 3, blade 4, upper and lower bracing frame 6.
Blade 4 is installed by upper and lower bracing frame 6 in pylon main body 1 top, the described pylon master between upper and lower bracing frame 6
Body 1 surrounding uniform array is distributed fractal hole 2, arranges reinforcement joint 3 between the structure of upper and lower two-layer fractal hole 2.Strengthening joint 3 is annulus
Shape.As it is shown in figure 5, each fractal hole 2 is square.
As shown in Figure 6 (a), when not having fractal hole 2 in pylon main body 1, pylon main body 1 can be considered general circle in wind field
Post streams.Shedding Vortex that upstream blade produces when diverse location and tail loss can cause vibration and the aerodynamic noise of pylon.
When flowing wind 5 speed and being less, almost without flow separation；Along with flowing the increase of wind speed, the vortex in pylon main body 1 downstream starts
Occur swinging astatically；Flowing wind speed to continue to increase, vortex alternately comes off from pylon main body 1, the direction of rotation phase on both sides
Instead, with stream under, form certain rule, the whirlpool of cross arrangement, referred to as Karman vortex street in pylon 1 downstream.This whirlpool can under
Trip blade produces certain impact, and vortex street exchange comes off and can produce vibration and noise, is unfavorable for wind energy conversion system safe and stable operation.
As shown in Figure 6 (b), when having fractal hole 2 in pylon main body 1, the air-flow passed from fractal hole 2 can destroy upstream leaf
The Shedding Vortex of sheet and the formation of Karman vortex street, thus weaken the phase between tower oscillation and aerodynamic noise, blade 4 and pylon main body 1
Downstream blade is agitated effect by interaction and pylon main body 1, improves wind energy conversion system operation stability and efficiency.
Claims (3)
1. a vertical axis windmill pylon for fractal structure, including the pylon main body (1) of cylinder thin-walled, upper and lower bracing frame (6),
Blade (4), blade (4) is installed by upper and lower bracing frame (6) in pylon main body (1) top, it is characterised in that: it is positioned at upper and lower bracing frame
(6) described pylon main body (1) surrounding uniform array between is distributed fractal hole (2), make through upstream blade a wind part from
Fractal hole passes in (2), destroys Shedding Vortex and the wake flow vortex in pylon downstream of pylon upstream blade, thus weakens pylon self
Vibration, blade and pylon between interaction and pylon downstream blade is agitated effect；The fractal hole of two-layer (2) structure up and down
Between arrange reinforcement joint (3), be used for making up fractal hole (2) and cause the reduction of tower frame strength.
2. according to the vertical axis windmill pylon of the fractal structure described in claims 1, it is characterised in that: each fractal hole
(2) it is square.
3. according to the vertical axis windmill pylon of the fractal structure described in claims 1 or 2, it is characterised in that: described reinforcement
Joint (3) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882462.XA CN106321366A (en) | 2016-10-09 | 2016-10-09 | Vertical axis wind machine tower of fractal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882462.XA CN106321366A (en) | 2016-10-09 | 2016-10-09 | Vertical axis wind machine tower of fractal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321366A true CN106321366A (en) | 2017-01-11 |
Family
ID=57821418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610882462.XA Pending CN106321366A (en) | 2016-10-09 | 2016-10-09 | Vertical axis wind machine tower of fractal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321366A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681921A (en) * | 2017-10-31 | 2018-02-09 | 长春工业大学 | A kind of multi-modal piezoelectric generator for the energy supply of pneumatic system Internet of things node |
| CN108443073A (en) * | 2018-05-08 | 2018-08-24 | 中国石油大学(华东) | A kind of H-type wind power generating set with vertical shaft with vibration-damping function |
| CN109083814A (en) * | 2018-08-29 | 2018-12-25 | 厦门大学 | Based on the down-wind type of WECS noise suppressing method for becoming helical angle fluting |
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|---|---|---|---|---|
| CN201062571Y (en) * | 2007-07-02 | 2008-05-21 | 李慧 | Vortex wind power wing electricity generating system |
| KR20110045711A (en) * | 2009-10-27 | 2011-05-04 | 삼성중공업 주식회사 | Reducing device for vortex induced vibration of wind turbine tower |
| CN105508150A (en) * | 2015-12-23 | 2016-04-20 | 上海理工大学 | Wind turbine blade based on fractal theory design |
| CN205400999U (en) * | 2016-01-26 | 2016-07-27 | 南京航空航天大学 | Wind energy conversion system pylon protection device |
-
2016
- 2016-10-09 CN CN201610882462.XA patent/CN106321366A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201062571Y (en) * | 2007-07-02 | 2008-05-21 | 李慧 | Vortex wind power wing electricity generating system |
| KR20110045711A (en) * | 2009-10-27 | 2011-05-04 | 삼성중공업 주식회사 | Reducing device for vortex induced vibration of wind turbine tower |
| CN105508150A (en) * | 2015-12-23 | 2016-04-20 | 上海理工大学 | Wind turbine blade based on fractal theory design |
| CN205400999U (en) * | 2016-01-26 | 2016-07-27 | 南京航空航天大学 | Wind energy conversion system pylon protection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681921A (en) * | 2017-10-31 | 2018-02-09 | 长春工业大学 | A kind of multi-modal piezoelectric generator for the energy supply of pneumatic system Internet of things node |
| CN107681921B (en) * | 2017-10-31 | 2019-06-07 | 长春工业大学 | A kind of multi-modal piezoelectric generator for the energy supply of pneumatic system Internet of things node |
| CN108443073A (en) * | 2018-05-08 | 2018-08-24 | 中国石油大学(华东) | A kind of H-type wind power generating set with vertical shaft with vibration-damping function |
| CN109083814A (en) * | 2018-08-29 | 2018-12-25 | 厦门大学 | Based on the down-wind type of WECS noise suppressing method for becoming helical angle fluting |
| CN109083814B (en) * | 2018-08-29 | 2019-06-21 | 厦门大学 | Based on the down-wind type of WECS noise suppressing method for becoming helical angle fluting |
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Application publication date: 20170111 |
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