CN206144718U - Fan blade is with falling device of making an uproar - Google Patents
Fan blade is with falling device of making an uproar Download PDFInfo
- Publication number
- CN206144718U CN206144718U CN201621087421.3U CN201621087421U CN206144718U CN 206144718 U CN206144718 U CN 206144718U CN 201621087421 U CN201621087421 U CN 201621087421U CN 206144718 U CN206144718 U CN 206144718U
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- bristle
- fan blade
- uproar
- denoising device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a fan blade is with falling device of making an uproar, falling the brush hair of making an uproar including the base plate with by what ultrahigh molecular weight polyethylene made, falling the brush hair setting of making an uproar and on the base plate, fall the device installation back of making an uproar, the bottom surface of base plate is fixed on fan blade, the utility model discloses a fan blade is with falling device of making an uproar adopts and to fall the brush hair of making an uproar by what ultrahigh molecular weight polyethylene (UHMWPE) made, and comprehensive properties is good, can solve the not enough of present brush hair material, should fall and make an uproar that brush hair mechanical properties is good, the quality is light, resistant UV is ageing, and the performance is splendid, and intensity, modulus, weather resistance and resistant ultraviolet aging performance all are superior to present brush hair material, and performances such as its toughness, ageing resistance ability, intensity, low temperature resistant, impact resistance meet the demands, and water -fast, moisture -proof, chemical resistance, UV -resistant radiance are all splendid, can solve present denoising technique and poor and have the problem that subassembly the noise reduction effect is single of making an uproar of falling now to the change response of distinguished and admirable orientation.
Description
Technical field
This utility model is related to a kind of denoising device, specifically a kind of fan blade denoising device.
Background technology
With being continuously increased for installed capacity of wind-driven power, the noise problem of Wind turbines is increasingly serious.The noise of Wind turbines
Pollution can disturb the work and life of resident nearby, and restrict the efficiency and yield of blade design, therefore the noise of Wind turbines
Control is very necessary.Denoising device while noise is controlled needs to minimize to the impact to Wind turbines generating efficiency.
The noise source of wind electricity blade is mainly structural vibration noise and the aerodynamic noise that wind wheel blade rotation causes.It is empty
Aerodynamic noise can come from the diverse location of blade, including the diverse location such as trailing edge, blade surface, blade tip, produce former
Between the unsteady flow because being all air, including the disturbance of air-flow, air-flow or air-flow and object interaction and the noise that produces.
It is designed and studies in terms of reducing at present the profile main from blade of the method for blade noise, aerofoil profile, structure and material etc., opens
The measure for sending out feasible, reduces the purpose of noise.Existing typical noise reduction technology respectively has pluses and minuses, such as in fan blade
Trailing edge adds sawtooth noise reduction adnexa, is only capable of reducing noise when wind is flowed up along certain party, in change of the wind, noise reduction
May then reduce, existing typical noise reduction technology is set forth below.
First, blade profile：Wind turbine rotor blade disclosed in 101387262 A of CN and wind-force worm gear rotor, by changing
Become vane tip flat shape, i.e., " winglet " is installed in blade tip（winglets）To realize noise reduction.Blade tip " winglet " can be with
Suppress the generation of flow-disturbing and vortex, increase air damping, reduce concussion, so as to reduce noise, but this noise reduction measure for
The noise effects that trailing vortex is produced are limited.
2nd, vane airfoil profile, structure：102003333 B of CN propose a kind of pneumatic equipment bladess with decrease of noise functions, this
Plant vane tip and sawtooth or hairbrush are installed, and the geometry to blade tip is limited and optimized, and can effectively reduce leaf
The intensity of Shedding Vortex at point, and then suppress the aerodynamic noise caused by Shedding Vortex.
3rd, material：The denoising device of the disclosed rotor blades in wind turbine of 102536639 A of CN, can be with
Absorb the denoising device binding agent from blade strain, the modulus of shearing of the binding agent is low, it may include epoxy resin, polyurethane,
Acrylate, acrylic foam etc., can prevent the strain of blade to be delivered to denoising device by adhesive phase.
4th, vortex generator：CN 101223356A disclose a kind of pitch controlled wind turbines blade, wind turbine and its
Using which reduces device as blade aerodynamic noise using a kind of turbulent flow generating means, and the device is placed on the leeward of wind blade
Face side, and it is located towards the outer section of vane tip.This turbulent generator can reduce vortex microseismic noise and trailing edge whirlpool
Stream departs from noise.
5th, sawtooth trailing edge, bristle：The denoiser of the disclosed rotor blades in wind energy conversion system of 102562436 B of CN,
It is a kind of sawtooth trailing edge denoising device of improvement, the denoising device is the zigzag trailing edge comprising multiple bristles or tuft, its
Middle bristle or tuft are stretched out from the peripheral edge surface of sawtooth trailing edge.Blade sawtooth trailing edge structures can change the position of broadband sound source
Put, the noise caused so as to reduce trailing edge vortex to come off.But the denoising device is only to improving trailing edge noise effectively, to blade
The noise result on surface is poor.
6th, pliability bristle：CN1936320A discloses a kind of wind turbine with the blade rotor for reducing noise, its
Including pliability bristle noise reduction components, the component is arranged in a row and protrudes out trailing edge on the trailing edge of blade, so as in air stream
The pressure oscillation of balance blade both sides on dynamic direction, reduces noise.
Above-mentioned existing typical noise reduction technology has various shortcomings, and common shortcoming is to reduce a certain single noise
The aerodynamic noise that source produces.As typical trailing edge serrations type denoising device has constant rigidity on the width of sawtooth, can make
Sawtooth is difficult to the change for responding wind direction, so as to lower noise reduction.
The outwork environment critical of blower fan, blade speed of service more and more higher, bristle noise reduction technology require bristle not only
Can there are impact, the stretching of enough intensity opposing high wind speed operatings, and will have enough pliabilities and anti-ultraviolet ageing to protect
Card noise reduction and service life, and noise reduction bristle material used in existing noise reduction patent does not recognize that uvioresistant performance
Importance, the ultraviolet material not tolerated throughout the year can gradually degrade in the sunlight, change colour, becoming fragile by exposure, and mechanical performance is significantly
Decline, ultimately result in fracture.Aromatic rings, double bond can not be contained in the molecular structure of ultraviolet-resistent property and weatherability requirement material therefor
Deng the functional group of unsaturated group, tertiary carbon center and other facile hydrolysiss, such as the aromatic rings in Kafra fiber are in ultraviolet lighting
Under gradually can degrade, therefore bristle acoustic damping materials for being not suitable as needing long-term outdoor to use.Existing bristle noise reduction technology
Material used includes thermoplastic materialss, thermoplastic glass's composite fibre, nylon, polyester, Kev drawing, polypropylene etc..These materials
Shortcoming is different, is difficult to take into account, it is difficult to meet practical application request in intensity, toughness, low temperature resistant, shock resistance, ageing resistace,
Such as the easy moisture absorption of nylon fiber, acid resistance are poor, it is impossible to tolerate the corrosion of acid rain, mechanical performance declines to a great extent after moisture absorption；Great majority
Polyester fiber machinery is poor, and facile hydrolysiss；The better mechanical property that Kev draws, but anti-ultraviolet ageing performance is poor, polypropylene
Mechanical strength properties it is poor, when blower fan rotates at a high speed, blade tip can reach 100m/s, therefore the mechanical strength to bristle will
Ask very high.In sum, find a various aspects of performance balance, the bristle material of excellent combination property.
The content of the invention
Technical problem to be solved in the utility model is, for the deficiencies in the prior art, there is provided a kind of fan blade is used
Denoising device, the denoising device using ultra-high molecular weight polyethylene as bristle material, it is its toughness, ageing resistace, intensity, resistance to
The performances such as low temperature, impact resistance meet and require, water-fast, moisture-proof, resistance to chemical attack, resistance to ultraviolet radiation can be splendid, can solve
The certainly existing noise reduction technology problem single to the change bad response and existing noise reduction components noise reduction of wind direction.
This utility model solve the technical scheme that adopted of above-mentioned technical problem for：A kind of fan blade denoising device,
Including substrate with by ultrahigh molecular weight polyethylene into noise reduction bristle, described noise reduction bristle is arranged on described substrate,
After denoising device is installed, the bottom surface of described substrate is fixed on fan blade.
This utility model is using by ultra-high molecular weight polyethylene（UHMWPE）Made by noise reduction bristle, good combination property can
The deficiency of existing bristle material is solved, this is that an accident of this utility model people in denoising device design research and development are carried out is sent out
It is existing.Overlength chain in the ultra-high molecular weight polyethylene that this utility model is adopted can be with significantly more efficient intermolecular mutual by strengthening
Effect, by load transfer to polymer backbone, therefore its impact strength is higher than any existing thermoplastic.This utility model
Molecule in the ultra-high molecular weight polyethylene that noise reduction bristle is adopted more than 95 % is parallel orientation, degree of crystallinity 39～75 % it
Between, and any functional group is not contained, its density is 0.93～0.94 g/cm3, tensile strength be 1400～3090 MPa, stretching die
Measure as 55～172 GPa, noise reduction bristle good mechanical property, the light weight, the ageing properties of resistance to UV are splendid, intensity, modulus, weatherability
Existing bristle material can be superior to anti-ultraviolet ageing performance（Its intensity is that conventional noise reduction bristle material is polyacrylic five times,
About polyacrylic ten times of stretch moduluses）, the performance such as its toughness, ageing resistace, intensity, low temperature resistant, impact resistance meets will
Ask, water-fast, moisture-proof, resistance to chemical attack, resistance to ultraviolet radiation can be splendid, it is possible to resolve existing noise reduction technology is to wind direction
Change the single problem of bad response and existing noise reduction components noise reduction.
Preferably, described noise reduction bristle is arranged on the front side of described substrate, described noise reduction bristle is zigzag
Or it is wavy, noise reduction bristle can substantially be cut into multiple continuous V-arrangements, U-shaped or semicircle unit, so that zigzag is integrally formed
Or it is wavy.Be cut to zigzag or wavy noise reduction bristle can with the distinguished and admirable interaction passed through, reduce with after blade
The related noise of edge vortex.
In practical operation, except zigzag or it is wavy in addition to, noise reduction bristle can also be cut to be suitable to reduce fan blade noise
Other any shapes.Further, the front side of described substrate is for plane, or, the front side of described substrate is sawtooth
Shape is wavy.Denoising device may be generally mounted at fan blade on the surface of trailing edge, also may be installed near leading edge
On surface, or on vane tip, the surface of root, and at other any suitable positions.
It is further preferred that the surface of described substrate is provided with some convex and parallel noise reduction guide rail, it is some described
Noise reduction guide rail interval setting, the front end of some described noise reduction guide rails is stretched out from front side of described substrate, per described in root
Auxiliary bristle is provided with noise reduction guide rail, described auxiliary bristle is set along the length direction interval per the noise reduction guide rail described in root
Put.Further, thin fin-shaped after some described noise reduction guide rails are thick before being.Noise reduction bristle and the noise reduction with auxiliary bristle
The combination of guide rail, can play the effect of collaboration noise reduction, reduce the noise being vortexed to trailing edge and blade surface vortex is related, especially
Which is in the case where changing through the wind direction of denoising device, with response advantageously, so as in change of the wind
Remain in that preferable noise reduction.In actual applications, this utility model noise reduction dress is installed simultaneously in blade trailing edge and surface
Put, make noise reduction guide rail and fan blade width general parallel orientation, blade surface, trailing edge, blade tip vortex noise reduction can be changed simultaneously,
Play preferably collaboration noise reduction.
Preferably, the surface of described substrate is provided with some convex and parallel noise reduction guide rail, some described noise reductions
Guide rail interval setting, the front end of some described noise reduction guide rails are stretched out from front side of described substrate, and some described noise reductions are led
Described noise reduction bristle is provided with rail, described noise reduction bristle is set along the length direction interval per the noise reduction guide rail described in root
Put.When fan blade is operated, the noise reduction guide rail containing noise reduction bristle can with the distinguished and admirable interaction for flowing through blade surface, effectively
The flow-disturbing effect between aerofoil profile is reduced, is reduced vortex microseismic noise and trailing edge vortex is departed from noise.The denoising device may be installed wind
On the surface of trailing edge, now noise reduction bristle can improve the response that guide rail changes to wind direction to machine blade, reduce aerofoil profile
Surface pressing is pulsed.Further, thin fin-shaped after some described noise reduction guide rails are thick before being, and in actual applications, drop
Guide rail of making an uproar is also designed to other any shapes that can reduce fan blade noise.
In actual applications, the height of noise reduction guide rail, thickness can be limited and its length stretched out from fan blade trailing edge with
And the spacing between two adjacent auxiliary guide rails.Guide rail interval is less, and noise reduction is better, but minimum guide rail interval can be led
Vortex is caused to come off.
Compared with prior art, the utility model has the advantage of：Disclosed in this utility model, fan blade is filled with noise reduction
Put using by ultra-high molecular weight polyethylene（UHMWPE）Made by noise reduction bristle, good combination property, it is possible to resolve existing bristle material
Deficiency；Molecule in the ultra-high molecular weight polyethylene that this utility model noise reduction bristle is adopted more than 95 % for parallel orientation,
Degree of crystallinity is between 39～75 %, and does not contain any functional group, and its density is 0.93～0.94 g/cm3, tensile strength is 1400
～3090 MPa, stretch moduluses be 55～172 GPa, noise reduction bristle good mechanical property, the light weight, the ageing properties of resistance to UV pole
Good, intensity, modulus, weather resistance and anti-ultraviolet ageing performance are superior to existing bristle material（Its intensity is conventional noise reduction brush
Batt material is polyacrylic five times, about polyacrylic ten times of stretch moduluses）, it is its toughness, ageing resistace, intensity, low temperature resistant, anti-
The performances such as impact meet and require, water-fast, moisture-proof, resistance to chemical attack, resistance to ultraviolet radiation can be splendid, it is possible to resolve existing drop
Technology of the making an uproar problem single to the change bad response and existing noise reduction components noise reduction of wind direction.
Description of the drawings
Fig. 1（a）～Fig. 1（c）For the local appearance schematic diagram of the denoising device of the embodiment 1 of multi-form；
Fig. 2 is Fig. 1（a）Denoising device install on the fan blade after design sketch；
Schematic appearances of the Fig. 3 for the denoising device of embodiment 2；
Schematic appearances of the Fig. 4 for the denoising device of embodiment 3；
Schematic appearances of the Fig. 5 for the denoising device of embodiment 4；
Schematic appearances of the Fig. 6 for the denoising device of embodiment 5；
Fig. 7 is design sketch after the denoising device of embodiment 5 is installed on fan blade；
Fig. 8 is enlarged drawing at A in Fig. 7.
Specific embodiment
This utility model is described in further detail below in conjunction with accompanying drawing embodiment.
The fan blade denoising device of embodiment 1, such as Fig. 1（a）～Fig. 1（c）It is shown, including substrate 1 and by superelevation point
Noise reduction bristle 2 made by sub- weight northylen, noise reduction bristle 2 are arranged on the front side of substrate 1, and the front side of substrate 1 is plane, noise reduction
Bristle 2 is zigzag or wavy.Fig. 1（a）, Fig. 1（b）, Fig. 1（c）It is three kinds of forms of the denoising device of embodiment 1, its drop
Bristle 2 of making an uproar is zigzag or wavy, but in practical operation, except zigzag or it is wavy in addition to, noise reduction bristle can also be cut to
It is suitable to reduce other any shapes of fan blade noise.After denoising device is installed, the bottom surface of substrate 1 is fixed on fan blade 3
On, Fig. 2 is Fig. 1（a）Denoising device install on the fan blade 3 after design sketch, in Fig. 2, the installation site of denoising device is leaned on
The tip of nearly fan blade 3, but in practical operation, denoising device also may be installed fan blade on the surface of trailing edge,
Or on the surface of leading edge, or on the surface of root of blade, and at other any suitable positions.
The fan blade denoising device of embodiment 2, as shown in figure 3, including substrate 1 and by ultrahigh molecular weight polyethylene
Into noise reduction bristle 2, noise reduction bristle 2 is arranged on the front side of substrate 1, and the front side of substrate 1 is zigzag, after denoising device is installed,
The bottom surface of substrate 1 is fixed on fan blade（Not shown in figure）On, the front side of substrate 1 is zigzag, and noise reduction bristle 2 is to adopt
With the zigzag illustrated in Fig. 1, wavy or other shapes.In the present embodiment, the front side of substrate 1 can also adopt wavy
Or other shapes.
The fan blade denoising device of embodiment 3, as shown in figure 4, including substrate 1 and by ultrahigh molecular weight polyethylene
Into noise reduction bristle 2, noise reduction bristle 2 is arranged on the front side of substrate 1, and noise reduction bristle 2 is zigzag；The surface of substrate 1 is provided with
Some convex and parallel noise reduction guide rail 3, thin fin-shaped after some noise reduction guide rails 3 are thick before being, some intervals of noise reduction guide rail 3 set
Put, the front end of some noise reduction guide rails 3 is stretched out from the front side of substrate 1, on every noise reduction guide rail 3, be provided with auxiliary bristle 4, pilot bruss
Length direction interval setting of the hair 4 along every noise reduction guide rail 3；After denoising device is installed, the bottom surface of substrate 1 is fixed on fan blade
（Not shown in figure）On.
The fan blade denoising device of embodiment 4, as shown in figure 5, including substrate 1 and by ultrahigh molecular weight polyethylene
Into noise reduction bristle 2, noise reduction bristle 2 is arranged on the front side of substrate 1, and the front side of substrate 1 is zigzag, and noise reduction bristle 2 is sawtooth
Shape；The surface of substrate 1 is provided with some convex and parallel noise reduction guide rail 3, thin fin after some noise reduction guide rails 3 are thick before being
Shape, some 3 interval settings of noise reduction guide rail, the front end of some noise reduction guide rails 3 are stretched out from the front side of substrate 1, on every noise reduction guide rail 3
Auxiliary bristle 4 is provided with, and bristle 4 is aided in along the length direction interval setting of every noise reduction guide rail 3；After denoising device is installed, base
The bottom surface of plate 1 is fixed on fan blade（Not shown in figure）On.
The fan blade denoising device of embodiment 5, as shown in fig. 6, including substrate 1 and by ultrahigh molecular weight polyethylene
Into noise reduction bristle 2, the surface of substrate 1 is provided with some convex and parallel noise reduction guide rail 3, before some noise reduction guide rails 3 are
Thin fin-shaped, some 3 interval settings of noise reduction guide rail after thick, the front end of some noise reduction guide rails 3 is stretched out from the front side of substrate 1, some
Noise reduction bristle 2, length direction interval setting of the noise reduction bristle 2 along every noise reduction guide rail 3 are provided with noise reduction guide rail 3；Noise reduction
After device is installed, the bottom surface of substrate 1 is fixed on fan blade 4, noise reduction guide rail 3 and 4 width general parallel orientation of fan blade,
After installation, design sketch is shown in Fig. 7.
Claims (8)
1. a kind of fan blade denoising device, it is characterised in that including substrate with by ultrahigh molecular weight polyethylene into noise reduction
Bristle, described noise reduction bristle are arranged on described substrate, and after denoising device is installed, the bottom surface of described substrate is fixed on wind
On machine blade.
2. a kind of fan blade denoising device according to claim 1, it is characterised in that described noise reduction bristle is arranged
In the front side of described substrate, described noise reduction bristle is zigzag or wavy.
3. a kind of fan blade denoising device according to claim 2, it is characterised in that the front side of described substrate is
It is plane.
4. a kind of fan blade denoising device according to claim 2, it is characterised in that the front side of described substrate is
Zigzag is wavy.
5. a kind of fan blade denoising device according to any one of claim 2-4, it is characterised in that described base
The surface of plate is provided with some convex and parallel noise reduction guide rail, some described noise reduction guide rail interval settings, some described
The front end of noise reduction guide rail is stretched out from front side of described substrate, per the noise reduction guide rail described in root on be provided with auxiliary bristle, it is described
Auxiliary bristle along length direction interval setting per the noise reduction guide rail described in root.
6. a kind of fan blade denoising device according to claim 5, it is characterised in that some described noise reduction guide rails
Thick rear thin fin-shaped before being.
7. a kind of fan blade denoising device according to claim 1, it is characterised in that the surface of described substrate sets
It is equipped with some convex and parallel noise reduction guide rail, some described noise reduction guide rail interval settings, some described noise reduction guide rails
Front end is stretched out from front side of described substrate, and described noise reduction bristle is provided with some described noise reduction guide rails, described
Noise reduction bristle is along the length direction interval setting per the noise reduction guide rail described in root.
8. a kind of fan blade denoising device according to claim 7, it is characterised in that some described noise reduction guide rails
Thick rear thin fin-shaped before being.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621087421.3U CN206144718U (en) | 2016-09-28 | 2016-09-28 | Fan blade is with falling device of making an uproar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621087421.3U CN206144718U (en) | 2016-09-28 | 2016-09-28 | Fan blade is with falling device of making an uproar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144718U true CN206144718U (en) | 2017-05-03 |
Family
ID=58621102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621087421.3U Active CN206144718U (en) | 2016-09-28 | 2016-09-28 | Fan blade is with falling device of making an uproar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206144718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246478A (en) * | 2016-09-28 | 2016-12-21 | 宁波峰微新材料科技有限公司 | Fan blade denoising device |
-
2016
- 2016-09-28 CN CN201621087421.3U patent/CN206144718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246478A (en) * | 2016-09-28 | 2016-12-21 | 宁波峰微新材料科技有限公司 | Fan blade denoising device |
| CN106246478B (en) * | 2016-09-28 | 2018-11-20 | 宁波峰微新材料科技有限公司 | Fan blade denoising device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106246478B (en) | Fan blade denoising device | |
| US8047784B2 (en) | Lift device for rotor blade in wind turbine | |
| US8226369B2 (en) | Conical helicoid wind turbine | |
| US7637721B2 (en) | Methods and apparatus for producing wind energy with reduced wind turbine noise | |
| US20090074585A1 (en) | Wind turbine blades with trailing edge serrations | |
| US20120027590A1 (en) | Noise reducer for rotor blade in wind turbine | |
| CN201358882Y (en) | Intelligent high-power windmill | |
| CN207420779U (en) | A kind of new blade of wind-driven generator vortex generator for being beneficial to installation | |
| CN201615029U (en) | Auxiliary wind guiding device of vertical shaft wind driven generator | |
| US20090116968A1 (en) | Blade for wind turbines & an improved wind turbine | |
| CN206144718U (en) | Fan blade is with falling device of making an uproar | |
| CN106150915A (en) | High-altitude wind power generation system based on unmanned aerial vehicle platform | |
| CN211008949U (en) | Wind power blade noise reduction trailing edge structure | |
| CN112128050B (en) | Noise reduction structure, blade and wind generating set | |
| CN107035614B (en) | A kind of vertical axis aerogenerator | |
| CN201925087U (en) | Vertical turbine with wind-collecting cover | |
| CN105508141B (en) | Depend on the power generator of skin | |
| CN201810484U (en) | Vertical wind power generator with wind deflector | |
| CN208669515U (en) | Wind power generation blade component and wind power generation plant | |
| CN110645141A (en) | Wind power blade noise reduction trailing edge structure | |
| CN208010513U (en) | A kind of screw type blade of wind-driven generator | |
| CN208010512U (en) | Screw type blade of wind-driven generator | |
| CN106499577A (en) | Fan blade horizontal plane girder | |
| CN206753808U (en) | A kind of wind power generation plant of multi fan blade blower fan head | |
| CN200999694Y (en) | Spiral fan leaf wind power generation plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |