CN203488310U - Blade of 10kW wind turbine generator system - Google Patents
Blade of 10kW wind turbine generator system Download PDFInfo
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- CN203488310U CN203488310U CN201320445281.2U CN201320445281U CN203488310U CN 203488310 U CN203488310 U CN 203488310U CN 201320445281 U CN201320445281 U CN 201320445281U CN 203488310 U CN203488310 U CN 203488310U
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- 239000010410 layer Substances 0.000 claims description 72
- 239000000835 fiber Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 28
- 239000011162 core material Substances 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 19
- 238000010248 power generation Methods 0.000 claims description 17
- 230000002745 absorbent Effects 0.000 claims description 12
- 239000002250 absorbent Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
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- 239000003822 epoxy resin Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- RYAIMSPHUVXLQI-UHFFFAOYSA-N 4-(aminomethyl)-2-(benzotriazol-2-yl)phenol Chemical compound NCC1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 RYAIMSPHUVXLQI-UHFFFAOYSA-N 0.000 description 1
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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
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Abstract
The utility model discloses a blade of a 10kW wind turbine generator system. An airfoil adopted by the blade is a DU93-W-210 aerofoil, with a relative thickness of 21%. The blade has a length L of 3.5 m. After the blade is already mounted, a wind wheel corresponding to the blade tip has a radius r of 3.9 m. At least ten profile points are arranged along the blade expansion direction. Through optimization of the blade with the DU93-W-210 aerofoil, the corresponding relationship between the chord length c of the blade profile at the corresponding wind-wheel radius r part of the blade and the blade torsion angle [eta] is obtained. The optimized blade has such aerodynamic parameters as to achieve the high ability of catching the wind. By taking advantages of the DU93-W-210 aerofoil and the optimized blade appearance, the wind utilization ability of the blade is greatly increased, with the wind utilization factor up to 0.46, and the power generating ability of the wind turbine generator system is significantly enhanced.
Description
Technical field
The utility model relates to technical field of wind power generation, more particularly, relates to a kind of 10kW wind power generation unit blade.
Background technique
Blade is parts basic and the most crucial in wind-driven generator, the design that it is good and reliably quality are directly connected to wind power generator efficiency and working life, the quality of blade aerodynamic configuration directly has influence on wind-powered electricity generation unit to the absorbent efficiency of wind, determined the efficiency of blower fan and annual electricity generating capacity number, be one of key factor of decision degree electricity cost.The task of wind-powered electricity generation unit wind wheel blade Design of Aerodynamic Configuration is according to wind wheel design condition, with the method for optimal design provide wind wheel blade section chord length, relative thickness and torsional angle along exhibition to variation, i.e. the geometric shape of blade.
After determining the blade profile of wind-driven generator, the intensity of blade and weight are the problems that first blade manufacture is considered, that is to say, under the condition ensureing in intensity, by minimum weight, obtaining maximum wind catching area is one of key element of mainly considering of blade technological design.
At present, domestic pneumatic equipment blades made ubiquity wind energy utilization is low, spend the shortcoming that electric cost is high, three blade wind wheel maximal wind-energy utilization factors reach 0.42, wind energy utilization is on the low side, how improving the capture ability of pneumatic equipment blades made to wind-force, improve the generating capacity of wind energy conversion system, is general the paid close attention to problem of current industry.
Model utility content
In order to solve the problem of prior art, improve the capture ability of pneumatic equipment blades made to wind energy, improve the generating capacity of wind energy conversion system, the utility model provides a kind of 10kW wind power generation unit blade.
Described technological scheme is as follows:
A kind of 10kW wind power generation unit blade, the aerofoil profile that described blade is used is DU93-W-210 aerofoil profile, its relative thickness is 21%, length of blade L is 3.5m, the wind wheel radius r that after blades installation, blade tip is corresponding is 3.9m, along described mounted blade direction, at least 10 section points are set altogether, the blade-section chord c of the corresponding wind wheel radius r of described blade position and the corresponding relation of twist angle of blade η are as shown in the table:
Along described mounted blade direction, 18 section points are set altogether, the blade-section chord c of the corresponding wind wheel radius r of described blade position and the corresponding relation of twist angle of blade η are as shown in the table:
Blade chord length c and twist angle of blade η between described adjacent 2 section points obtain by third-order spline interpolation method.
Described blade comprises core and basic material of blade, and described basic material of blade is wrapped in described core outer side surface;
Described core is foam core material, and it is mixed by black, the white material of polyether-polyurethane, and described polyether-polyurethane is black, the mixed proportion of white material is 1:1;
Described basic material of blade be E type glass multiaxis to and unidirectional fiber layers, described core and described basic material of blade form by resin-bonded.
Described resin is epoxy vingl ester resin or phenolic resin.
Described E type glass multiaxis is the axial cloth of glass fibre three to layer of fibers, its thickness in monolayer is 0.8～0.9mm, described E type glass unidirectional fiber layers is unidirectional composite felt, its thickness in monolayer is 1.1～1.2mm, described E type glass multiaxis is alternate laying to layer of fibers and unidirectional fiber layers, and described E type glass unidirectional fiber layers is arranged at described two-layer described E type multiaxis between layer of fibers.
Preferably, the injection of the external layer of described basic material of blade is useful on the wind erosion of alleviation blade, prevents that the gel coat layer that skin comes off, the thickness of described gel coat layer from being 0.3～0.5mm.
Further preferably, the outer surface of described gel coat layer also sprays the dry gel coat layer of gas, and the thickness of the dry gel coat layer of described gas is 0.2～0.4mm, and the dry gel coat layer of described gas is without wax pattern air drying property gel coat.
Most preferably, in the dry gel coat layer of described gas, contain ultraviolet-resistant absorbent, described ultraviolet-resistant absorbent is ultraviolet absorbent UV-531 or UV-9.
The beneficial effect that the technological scheme that the utility model provides is brought is:
1. the utility model adopts Dutch DU93-W-210 aerofoil profile, and this kind of airfoil fan carried out to aerodynamic configuration parameter optimization, because this aerofoil profile has high lift-drag ratio, high maximum lift and gentle stalling characteristics, simultaneously, to performances such as the insensitive and low noises of roughness, by optimizing resulting blade, compare under same wind speed environment with existing blade, wind power generation unit blade provided by the utility model is compared and can be improved wind energy utilization 5%～10% with existing wind power generation unit blade.
2. blade provided by the utility model comprises core and basic material of blade, and basic material of blade is wrapped in core outer side surface, and core is foam core material, and it is mixed by black, the white material of polyether-polyurethane, and polyether-polyurethane is black, the mixed proportion of white material is 1:1; Basic material of blade be E type glass multiaxis to and unidirectional fiber layers, core and basic material of blade form by resin-bonded.E type glass multiaxis is wherein alternate laying to layer of fibers and unidirectional fiber layers, and E type glass unidirectional fiber layers is arranged at two-layer E type multiaxis between layer of fibers, has significantly improved like this bulk strength of blade.
3. the utility model sprays gel coat layer before leaf fiber laying, the thickness of gel coat layer is 0.3～0.5mm, preferably adopt the gel coat layer of thickness 0.4mm, the main cementation of this layer, and strengthened the cohesive force of basic material of blade external layer and construction layer, guarantee the smooth surface of blade, to reduce windage, improved blade and resisted the ability of eroding.
4. in order effectively to increase the ageing resistance of blade, the utility model also has the dry gel coat layer of gas in the outer surface injection of gel coat layer, the thickness of the dry gel coat layer of gas is 0.2～0.4mm, in the dry gel coat layer of gas, contains ultraviolet-resistant absorbent, thereby avoids the drawback of Electromagnetic Interference and light reflection.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is existing DU93-W-210 aerofoil section structural drawing;
Fig. 2 is the blade structure plan view (having 10 section points) after optimization provided by the utility model;
Fig. 3 is the sectional view at 7 places, A-A cross section in Fig. 2;
Fig. 4 is the blade structure plan view (having 18 section points) after optimization provided by the utility model;
Fig. 5 is blade structure partial cross section view provided by the utility model.
In figure: 1-core; 2-basic material of blade; 21-E type glass multiaxis layer of fibers, 22-unidirectional fiber layers; 3-gel coat layer; The dry gel coat layer of 4-gas.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.The utility model is selected is Dutch DU93-W-210 aerofoil profile for the blade being optimized, and as shown in Figure 1, its aerodynamic coefficient is as shown in table 1 for its sectional shape.Wherein the design principle of DU93-W-210 aerofoil profile is: outside aerofoil profile has high lift-drag ratio, high maximum lift and gentle stalling characteristics, the performance such as insensitive and low noise to roughness.
Table 1DU93-W-210 aerofoil profile aerodynamic coefficient
| α | C l | C d |
| -180.0 | 0.0000 | 0.0101 |
| -170.0 | 0.4397 | 0.0510 |
| -160.0 | 0.8794 | 0.1688 |
| -150.0 | 0.7457 | 0.3492 |
| -140.0 | 0.6721 | 0.5705 |
| -130.0 | 0.5892 | 0.8057 |
| -120.0 | 0.4769 | 1.0265 |
| -110.0 | 0.3340 | 1.2061 |
| -100.0 | 0.1698 | 1.3227 |
| -90.0 | 0.0000 | 1.3620 |
| -80.0 | -0.1698 | 1.3227 |
| -70.0 | -0.3340 | 1.2061 |
| -60.0 | -0.4769 | 1.0265 |
| -50.0 | -0.5892 | 0.8057 |
| -40.0 | -0.6721 | 0.5705 |
| -30.0 | -0.7457 | 0.3492 |
| -20.0 | -0.8794 | 0.1688 |
| -10.0 | -0.2715 | 0.0887 |
| 0.0 | 0.4805 | 0.0086 |
| 1.0 | 0.5954 | 0.0089 |
| 2.0 | 0.7088 | 0.0091 |
| 3.0 | 0.8249 | 0.0093 |
| 4.0 | 0.9361 | 0.0096 |
| 5.0 | 1.0484 | 0.0099 |
| 6.0 | 1.1544 | 0.0103 |
| 7.0 | 1.2555 | 0.0107 |
| 8.0 | 1.3432 | 0.0118 |
| 9.0 | 1.3815 | 0.0151 |
| 10.0 | 1.3444 | 0.0205 |
| 12.0 | 1.2042 | 0.0423 |
| 14.0 | 1.2061 | 0.0721 |
| 16.0 | 1.2256 | 0.1001 |
| 18.0 | 1.2454 | 0.1319 |
| 20.0 | 1.2563 | 0.1688 |
| 30.0 | 1.0653 | 0.3492 |
| 40.0 | 0.9601 | 0.5705 |
| 50.0 | 0.8417 | 0.8057 |
| 60.0 | 0.6813 | 1.0265 |
| 70.0 | 0.4772 | 1.2061 |
| 80.0 | 0.2426 | 1.3227 |
| 90.0 | 0.0000 | 1.3620 |
| 100.0 | -0.1698 | 1.3227 |
| 110.0 | -0.3340 | 1.2061 |
| 120.0 | -0.4769 | 1.0265 |
| 130.0 | -0.5892 | 0.8057 |
| 140.0 | -0.6721 | 0.5705 |
| 150.0 | -0.7457 | 0.3492 |
| 160.0 | -0.8794 | 0.1688 |
| 170.0 | -0.4397 | 0.0510 |
| 180.0 | 0.0000 | 0.0101 |
Wherein: the angle of attack that α is blade;
C
llift coefficient for foline;
C
dfor resistance coefficient.
The 10kW wind power generation unit blade structural profile that the utility model provides as shown in Figure 2, the aerofoil profile that blade is used is DU93-W-210 aerofoil profile, its relative thickness is 21%, its length of blade L is 3.5m, after installing, the corresponding wind wheel radius r of blade tip is 3.9m, along mounted blade direction, at least 10 section points are set altogether, blade chord length and torsional angle between each section point are obtained by third-order spline interpolation method, as shown in Figures 2 and 3, the corresponding relation of the corresponding wind wheel radius r of the blade at each section point place, blade-section chord c and twist angle of blade η is as shown in table 2 below:
Table 2 is optimized the 10kW blade aerodynamic configuration table of rear DU93-W-210 aerofoil profile
By further optimization, along 18 section points are set in mounted blade direction altogether, as shown in Figure 4, the blade-section chord c of the corresponding wind wheel radius r of blade position and the corresponding relation of twist angle of blade η are as shown in table 3:
Table 3: the 10kW blade aerodynamic configuration table of DU93-W-210 aerofoil profile after optimizing
Certainly, the utility model can also arrange more optimization section, just repeats no more here.
Three blade wind wheel characteristics refer generally to power coefficient and thrust coefficient vane tip speed ratio change curve with the wind.In the situation that considering tip loss, table 4 provides the power coefficient that calculates by performance program and thrust coefficient with tip speed ratio situation of change.As shown in Table 4, maximal wind-energy utilization factor C
pmaxsurpass 0.46; In the wider scope of tip speed ratio, power coefficient is all greater than 0.45, means that three blade wind wheels have preferably performance performance.Table 5 has provided wind wheel within the scope of tip speed ratio 5～9 scopes, wind speed 3～15m/s, three blade wind wheel performances in maximum speed 200rpm situation.Table 6 has provided the starting torque of wind wheel main shaft under 3～8m/s wind speed.
Table 4: three blade power coefficient C
pcT changes with tip speed ratio with thrust coefficient
| Tip speed ratio λ | C P | C T |
| 0.5 | 0.0024 | 0.0668 |
| 1.0 | 0.0055 | 0.0782 |
| 1.5 | 0.0105 | 0.0946 |
| 2.0 | 0.0335 | 0.1292 |
| 2.5 | 0.0753 | 0.1776 |
| 3.0 | 0.1265 | 0.2341 |
| 3.5 | 0.1844 | 0.2986 |
| 4.0 | 0.2484 | 0.3699 |
| 4.5 | 0.3319 | 0.4759 |
| 5.0 | 0.4060 | 0.5888 |
| 5.5 | 0.4486 | 0.6776 |
| 6.0 | 0.4620 | 0.7338 |
| 6.5 | 0.4639 | 0.7726 |
| 7.0 | 0.4603 | 0.8064 |
| 7.5 | 0.4538 | 0.8390 |
| 8.0 | 0.4446 | 0.8697 |
| 8.5 | 0.4332 | 0.8983 |
| 9.0 | 0.4197 | 0.9276 |
| 9.5 | 0.4034 | 0.9548 |
| 10.0 | 0.3853 | 0.9830 |
| 10.5 | 0.3650 | 1.0088 |
| 11.0 | 0.3421 | 1.0337 |
| 11.5 | 0.3165 | 1.0584 |
| 12.0 | 0.2885 | 1.0828 |
| 12.5 | 0.2582 | 1.1067 |
| 13.0 | 0.2253 | 1.1300 |
| 13.5 | 0.1898 | 1.1527 |
| 14.0 | 0.1515 | 1.1749 |
| 14.5 | 0.1104 | 1.1966 |
| 15.0 | 0.0664 | 1.2180 |
| 15.5 | 0.0195 | 1.2389 |
Table 5 wind-powered electricity generation unit wind wheel performance parameter is with the variation of wind speed
The starting torque of wind wheel main shaft under table 6 3～8m/s wind speed
| Wind speed (m/s) | Starting torque (N.m) |
| 3.0 | 4.6 |
| 3.5 | 6.3 |
| 4.0 | 8.2 |
| 4.5 | 10.4 |
| 5.0 | 12.9 |
| 5.5 | 15.6 |
| 6.0 | 18.5 |
| 6.5 | 21.8 |
| 7.0 | 25.2 |
| 7.5 | 29.0 |
| 8.0 | 33.0 |
As shown in Figure 5, blade provided by the utility model comprises core 1 and basic material of blade 2, and basic material of blade 2 is wrapped in core 1 outer side surface, and core 1 is foam core material, it is mixed by black, the white material of polyether-polyurethane, and polyether-polyurethane is black, the mixed proportion of white material is 1:1; Basic material of blade 2 be E type glass multiaxis to and unidirectional fiber layers, core 1 forms by resin-bonded with basic material of blade 2.The resin here can be epoxy vingl ester resin or epoxy resin, also can be the resin of other type, adopt vacuum L-RTM technique, the whole injecting glue process of blade is all to complete under vacuum, there is not bubble, poor glue phenomenon in the laminated face of blade, during blade laying, at its front and rear edge, all carried out repeatedly parcel, blade windward side (PS) and go wind face (SS) as a whole, there is not the cracking phenomena of front and rear edge in blade.Blade provided by the utility model adopts L-RTM, without bonding after solidifying, has saved a part of operating procedure in course of working.
E type glass multiaxis is wherein the axial cloth of glass fibre three to layer of fibers 21, its thickness in monolayer is 0.8～0.9mm, E type glass unidirectional fiber layers 22 is unidirectional composite felt, its thickness in monolayer is 1.1～1.2mm, E type glass multiaxis is alternate laying to layer of fibers 21 and unidirectional fiber layers 22, E type glass unidirectional fiber layers 22 is arranged at two-layer E type multiaxis between layer of fibers 21, has improved the bulk strength of blade.
The material of blade must guarantee smooth surface, to reduce windage, coarse appearance can " be torn " by wind, the thickness of composite material blade external layer, hardness and corrosion-resistant particularly important, particularly in the Northwest of China, dust storm is large, blade appearance is subject to washing away of dust storm more serious, for alleviating the wind erosion of blade, prevent outer field coming off, before leaf fiber laying, spray gel coat layer 3, the thickness of gel coat layer 3 is 0.3～0.5mm, preferably adopt the gel coat layer of thickness 0.4mm, the main cementation of this layer, and strengthened the cohesive force of basic material of blade 2 external layers and construction layer.
In addition, in order effectively to increase the ageing resistance of blade, at the outer surface of gel coat layer 3, also spray and have the dry gel coat layer 4 of gas, the thickness of the dry gel coat layer 3 of gas is 0.2～0.4mm, and the dry gel coat layer 4 of gas is without wax pattern air drying property gel coat.
Most preferably, in the dry gel coat layer 4 of gas, contain ultraviolet-resistant absorbent, drawback for fear of Electromagnetic Interference and light reflection, wherein ultraviolet-resistant absorbent is ultraviolet absorbent UV-531 (chemical name: 2 – Qiang Ji – 4 – oxy-octyl benzophenones) or ultraviolet light absorber UV-9(chemical name: 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) benzotriazole), here being not limited to these two kinds, can be also the ultraviolet-resistant absorbent of other kind.
Theoretical by application momentum foline, the method by optimal design, obtains 10kW blade aerodynamic configuration optimum results, and the three blade wind wheel maximal wind-energy utilization factors that are comprised of blade reach 0.46.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent embodiment's quality.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a 10kW wind power generation unit blade, it is characterized in that: the aerofoil profile that described blade is used is DU93-W-210 aerofoil profile, its relative thickness is 21%, length of blade L is 3.5m, the wind wheel radius r that after blades installation, blade tip is corresponding is 3.9m, along described mounted blade direction, at least 10 section points are set altogether, the blade-section chord c of the corresponding wind wheel radius r of described blade position and the corresponding relation of twist angle of blade η are as shown in the table:
2. 10kW wind power generation unit blade according to claim 1, is characterized in that:
Along described mounted blade direction, 18 section points are set altogether, the blade-section chord c of the corresponding wind wheel radius r of described blade position and the corresponding relation of twist angle of blade η are as shown in the table:
3. 10kW wind power generation unit blade according to claim 1 and 2, is characterized in that:
Blade chord length c and twist angle of blade η between described adjacent 2 section points obtain by third-order spline interpolation method.
4. 10kW wind power generation unit blade according to claim 1 and 2, is characterized in that:
Described blade comprises core and basic material of blade, and described basic material of blade is wrapped in described core outer side surface;
Described core is foam core material;
Described basic material of blade be E type glass multiaxis to and unidirectional fiber layers, described core and described basic material of blade form by resin-bonded.
5. 10kW wind power generation unit blade according to claim 4, is characterized in that:
Described resin is epoxy vingl ester resin or epoxy resin.
6. 10kW wind power generation unit blade according to claim 4, is characterized in that:
Described E type glass multiaxis is the axial cloth of glass fibre three to layer of fibers, its thickness in monolayer is 0.8～0.9mm, described E type glass unidirectional fiber layers is unidirectional composite felt, its thickness in monolayer is 1.1～1.2mm, described E type glass multiaxis is alternate laying to layer of fibers and unidirectional fiber layers, and described E type glass unidirectional fiber layers is arranged at described two-layer described E type multiaxis between layer of fibers.
7. 10kW wind power generation unit blade according to claim 6, is characterized in that:
The external layer injection of described basic material of blade is useful on the wind erosion of alleviation blade, prevents that the gel coat layer that skin comes off, the thickness of described gel coat layer from being 0.3～0.5mm.
8. 10kW wind power generation unit blade according to claim 7, is characterized in that:
The outer surface of described gel coat layer also sprays the dry gel coat layer of gas, and the thickness of the dry gel coat layer of described gas is 0.2～0.4mm, and the dry gel coat layer of described gas is without wax pattern air drying property gel coat.
9. 10kW wind power generation unit blade according to claim 8, is characterized in that:
In the dry gel coat layer of described gas, contain ultraviolet-resistant absorbent, described ultraviolet-resistant absorbent is ultraviolet absorbent UV-531 or UV-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445281.2U CN203488310U (en) | 2013-07-24 | 2013-07-24 | Blade of 10kW wind turbine generator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445281.2U CN203488310U (en) | 2013-07-24 | 2013-07-24 | Blade of 10kW wind turbine generator system |
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| Publication Number | Publication Date |
|---|---|
| CN203488310U true CN203488310U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320445281.2U Withdrawn - After Issue CN203488310U (en) | 2013-07-24 | 2013-07-24 | Blade of 10kW wind turbine generator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557122A (en) * | 2013-07-24 | 2014-02-05 | 李英吉 | Blade of 10kW wind turbine generator |
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2013
- 2013-07-24 CN CN201320445281.2U patent/CN203488310U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557122A (en) * | 2013-07-24 | 2014-02-05 | 李英吉 | Blade of 10kW wind turbine generator |
| CN103557122B (en) * | 2013-07-24 | 2015-12-23 | 李英吉 | A kind of 10kW wind power generation unit blade |
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