CN201865841U - Lift-drag fused wing plate type vertical axis wind wheel - Google Patents
Lift-drag fused wing plate type vertical axis wind wheel Download PDFInfo
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- CN201865841U CN201865841U CN2010206414440U CN201020641444U CN201865841U CN 201865841 U CN201865841 U CN 201865841U CN 2010206414440 U CN2010206414440 U CN 2010206414440U CN 201020641444 U CN201020641444 U CN 201020641444U CN 201865841 U CN201865841 U CN 201865841U
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model discloses a lift-drag fused wing plate type vertical axis wind wheel which comprises a rotation axis and a plurality of blades which take the rotation axis as a center and are distributed along circumferential direction. The blades adopt a lift-drag fused wing plate formed by fusing lift convex surfaces and drag concave surfaces, and transition arc cylindrical surfaces which can be matched with each other are arranged in combined positions of the concave surfaces and the convex surfaces. The wind wheel integrates resistance and lift properties of wind energy application, and has the advantages of low starting wind speed, fast speed increasing, high wind energy utilization, low cost, stable operation and the like.
Description
Technical field
The utility model relates to the vertical axis rotor of used for wind power generation, relates in particular to a kind of bifunctional wing plate type vertical axis rotor of the liter of fusion resistance that has.
Background technique
Wind energy is a kind of cleaning, safety, the regeneration green energy, and is inexhaustible, nexhaustible, becomes a kind of new energy that countries in the world develop energetically gradually.Wind-driven generator can be divided into horizontal axis wind-driven generator and vertical axis aerogenerator two big classes.The structure characteristic of horizontal-shaft wind turbine is that the plane of rotation of wind wheel is vertical with wind direction, and running shaft is parallel with ground, is that present technology is the most ripe, the most a kind of wind-driven generator of production application.The feature of vertical axis windmill is that running shaft is perpendicular to the ground, the plane of rotation of wind wheel is parallel with wind direction, have that wind turbine tower is simple in structure, Operation and maintenance are convenient, blade low cost of manufacture and do not need advantage such as wind plant, can be divided into lifting wind wheel and resistance type wind wheel two major types.Typical lifting wind wheel is Da Lie formula (Darrieus Type) wind energy conversion system, shape Da Lie formula blower fan according to blade has Φ type, △ type, H type, Y type and ◇ type various ways, it has rotating speed height, big, the advantages of simple structure and simple of rotatory inertia, but detent torque is little, startability is relatively poor, when tip-speed ratio (tip speed/wind speed of blade) just is difficult to less than 3.5 the time start, start wind wheel and need to consume other energy.Typical resistance type wind wheel then is Saab Niu Sishi (Savonius Type) wind energy conversion system with S shape, and it has advantages such as simple in structure, that cost is low, flywheel moment is big, startability is good, but rotating speed and efficient are lower, and tip-speed ratio is forever less than 1.
In view of above-mentioned lift-type and the characteristics of resistance force type vertical shaft wind wheel and the deficiency of existence, there are some settling modes in the prior art, for example Chinese patent publication number CN101566126A disclosed " a kind of lift-drag complementary vertical axis wind wheel " installs one group of screw type resistance type blade additional in the inside of Φ type lift wind wheel, lifting wind wheel and the utilization of resistance type wind wheel machinery compound mode is assembled into the complex function wind wheel wind energy transformation is mechanical energy, this kind wind wheel adopts two kinds of different blades of structure to divide inside and outside the setting, complex structure, manufacturing difficulty.And for example Chinese patent publication number CN100347440C disclosed " windmill of used for wind power generation " carries out part excision back and the improved type wing plate blade that forms " hollow comma " sectional shape reaches the General of lifting wind wheel and resistance type wind wheel to the hinder marginal part below lift wing plate (reynolds' number is low and lift coefficient the is high) blade of Darrius formula H type wind wheel, but the incised notch portion of this kind wind wheel blade diminishes the whole shape of blade structure and formation non-streamline surface and be unfavorable for flowing at the wind at this place below wing.
The model utility content
The purpose of this utility model is to provide a kind of simple in structure, vertical axis rotor that can better utilize wind energy.
The technical solution of the utility model is, rise resistance and merge wing plate type vertical axis rotor, comprise running shaft and be the circumferential a plurality of blades in center with the running shaft, each blade is that the height bearing of trend of side all around is axially consistent with running shaft, and wing plate is merged in the liter resistance that is aerofoil profile perpendicular to the shape of the cross section of running shaft, and the side is by lift convex surface cylinder around the described blade, resistance concave surface cylinder, be connected in the preceding transition arc cylinder between lift convex surface cylinder front end and the resistance concave surface cylinder front end, being connected in back transition arc cylinder between lift convex surface pole panel rear end and the resistance concave surface pole panel rear end surrounds and forms; Lift convex surface cylinder is connected smoothly by forward and backward two sections circular arc cylinder sections and forms, and resistance concave surface cylinder is to be made of one section circular arc cylinder.
The cross section of described blade is determined based on the aerofoil profile parameter of blade, described aerofoil profile parameter is by the string of a musical instrument, chord length obtains, the preceding transition arc cylinder of blade and the line segment at the ultimate range place between the transition arc cylinder of back are defined as the string of a musical instrument, the length of the string of a musical instrument is the chord length of blade, the aerofoil profile parameter is as follows: the preceding circular arc cylinder section radius of described lift convex surface is 28.5% of a chord length, arc angle is 72 °, the radius of back circular arc cylinder section 112 is 126% of a chord length, arc angle is 35 °, the radius of the circular arc cylinder of described resistance concave surface is 126% of a chord length, arc angle is 46 °, the radius of described leading edge transition arc cylinder 13 is 1.5% of a chord length, the radius of trailing edge transition arc cylinder 14 is 1% of a chord length, the maximum arch that ultimate range between lift convex surface and the resistance concave surface is defined as blade is thick, maximum arch is thick to be 15% of chord length, with in the leaf cross-section with lift convex surface and the equidistant curve definitions of resistance concave surface be mean camber line, ultimate range between the mean camber line and the string of a musical instrument is defined as the maximum camber of blade, and maximum camber is 16.5% of a chord length.
Described each blade has established angle between the line at the center of the string of a musical instrument of blade and string of a musical instrument forward terminal and running shaft when mounted, and established angle is 60 °～70 °, and the string of a musical instrument forward terminal of each blade and the line at rotating shaft center are pressed five equilibrium angle layout configurations on circumference; The diameter of the place circumference of the outermost end of described each blade is the outside diameter of wind wheel, and the outside diameter of wind wheel is 286% of a chord length.
The ratio of described wind wheel blade height and wind wheel outside diameter is that ratio of height to diameter is 1～3.
The two ends up and down of described each blade are connected in respectively to intersect vertically with running shaft and are connected on the upper cover plate and lower shoe of the circle that is provided with, and the outside diameter of described upper cover plate and lower shoe equates with the outside diameter of wind wheel.
Blade of the present utility model merges wing plate for rising resistance, the lift convex surface of blade presents the characteristic of lift force blade wind wheel under the angle of attack (angle of the string of a musical instrument and airflow direction) that is fit to, the resistance concave surface of blade is then realized the function of resistance blade wind wheel at diverse location, under wind action, not only can produce lift driving wind wheel but also can produce resistance driving wind wheel owing to rising resistance fusion wing plate blade, compare with the fabricated structure of existing lift-drag complementary vertical axis wind wheel (CN101566126A), from blade constituting component fusion lift itself and resistance function is one, makes simple in structure, with low cost and reliable; And the resistance concave surface of blade of the present utility model is the circular arc cylinder, the windmill (CN100347440C) that has the used for wind power generation that blade constituted of incised notch portion with existing rear portion is compared the more level and smooth air stream structure of formation when concave surface facings the wind, and helps improving the Wind Power Utilization characteristic.The related liter resistance of the utility model is merged the wing plate wind wheel when low-speed running, driving moment with resistance type wind wheel is big, little characteristics and the tip speed ratio of startup wind speed is higher than traditional resistance type wind wheel again, has remedied the deficiency of lifting wind wheel low speed start poor performance simultaneously.Under the situation of running up, rise resistance fusion wing plate wind wheel and have the big characteristic of rotating speed height, wind energy utilization of lifting wind wheel, improved the not high weakness of resistance type wind wheel running speed simultaneously.Like this, rise resistance fusion wing plate wind wheel and taken into account the low-speed performance of resistance type wind wheel and the high speed performance of lifting wind wheel, the higher efficiency that wind energy is converted to mechanical energy expands to the whole work wind speed of 1.6～30m/s district, has improved the wind energy conversion efficiency of wind wheel.
Description of drawings
Fig. 1 is the wing plate mounting arrangement schematic representation (not showing upper cover plate, lower shoe) of the specific embodiment of wind wheel of the present utility model;
Fig. 2 is the geometrical construction figure in the disconnected cross section of wing plate among Fig. 1;
Fig. 3 is wind wheel and the blower fan assembled construction schematic representation among Fig. 1.
Among the figure: 1, blade; 2, upper cover plate; 3, sealing cover; 4, running shaft; 5, lower shoe; 6, external rotor permanent magnet generator.
Embodiment
Shown in Fig. 1～3, the specific embodiment of vertical axis rotor of the present utility model, comprise running shaft 4 and be circumferential five blades 1 in center with running shaft 4, the two ends up and down of each blade 1 are connected to intersect vertically with running shaft 4 and are connected on the upper cover plate 2 and lower shoe 5 that is provided with, the upper/lower terminal of each blade 1 is by being bolted on corresponding upper cover plate 2, the lower shoe 5, and the wind-force that blade 1 is subjected to is passed to running shaft 4 through upper cover plate 2 and lower shoe 5.Each blade 1 is that the height bearing of trend of side all around is axially consistent with running shaft 4, and wing plate is merged in the liter resistance that is aerofoil profile perpendicular to the shape of the cross section of running shaft 4, the side is by lift convex surface cylinder 11 around the described blade 1, resistance concave surface cylinder 12, be connected in the preceding transition arc cylinder 13 between lift convex surface cylinder 11 front ends and resistance concave surface cylinder 12 front ends, being connected in back transition arc cylinder 14 between lift convex surface pole panel 11 rear ends and resistance concave surface pole panel 12 rear ends surrounds and forms, lift convex surface cylinder 11 is by preceding, the two sections circular arc cylinder sections 111 in back, 112 formations that are connected smoothly, and resistance concave surface cylinder 12 is to be made of one section circular arc cylinder, therefore the side of blade 1 is made up of the multi-section circular arc cylinder, simple in structure, design and produce conveniently, and liter resistance fusion wing plate wind wheel has been taken into account the low-speed performance of resistance type wind wheel and the high speed performance of lifting wind wheel.
Further, the preceding transition arc cylinder 13 of blade 1 and the line segment at the ultimate range place between the back transition arc cylinder 14 are defined as the string of a musical instrument, the string of a musical instrument is represented with c in Fig. 2, the length of the string of a musical instrument is the chord length L of blade, the aerofoil profile parameter of blade 1 obtains based on the chord length of blade in embodiment of the present utility model, the aerofoil profile of the blade 1 of wind wheel of the present utility model be shape of cross section as shown in Figure 2, chord length L is big or small directly related with blade.The aerofoil profile parameter is as follows: the radius R 1 of the preceding circular arc cylinder section 111 of described lift convex surface 11 is 28.5% of a chord length, arc angle β 1 is 72 °, the radius R 2 of back circular arc cylinder section 112 is 126% of a chord length, arc angle β 2 is 35 °, the radius R 3 of the circular arc cylinder of described resistance concave surface 12 is 126% of a chord length, arc angle β 3 is 46 °, the radius R 4 of described leading edge transition arc cylinder 13 is 1.5% of a chord length, the radius R 5 of trailing edge transition arc cylinder 14 is 1% of a chord length, the maximum that ultimate range between lift convex surface 11 and the resistance concave surface 12 is defined as blade is encircleed thick T, maximum arch is thick to be 15% of chord length, with in blade 1 cross section with lift convex surface 11 be mean camber line with resistance concave surface 12 equidistant curve definitions, mean camber line is represented with b in Fig. 2, ultimate range between the mean camber line and the string of a musical instrument is defined as the maximum camber f of blade, maximum camber is 16.5% of a chord length, after selected chord length, each above aerofoil profile parametric synthesis can be designed the cross section of blade of the present utility model together.
Further for making the blade in the wind wheel of the present utility model in wind field, better present the characteristic that wing plate is merged in liter resistance, blade among the embodiment of the present utility model 1 is formed the blade layout chart according to assembly relation shown in Figure 1, make between the line of center O of the string of a musical instrument c of each blade 1 and string of a musical instrument forward terminal and running shaft 4 and have established angle α, the established angle α of blade 1 chooses 60 °～70 °, and the string of a musical instrument forward terminal of each blade 1 and the line at rotating shaft center are pressed five equilibrium angle layout configurations on circumference.Make the lift convex surface of blade 1 have 40 °～50 ° the angle of attack (angle of the string of a musical instrument and airflow direction) like this, thereby make blade 1 present the characteristic of lift force blade wind wheel and have the tip-speed ratio identical with the lift force blade wind wheel when rotating, the resistance concave surface of blade is then realized the function of resistance blade wind wheel at diverse location.And the diameter of the place circumference of the outermost end of each blade 1 in Fig. 2 is D
Max, the upper cover plate 2 among the embodiment of the present utility model and the outside diameter of lower shoe 5 also are D
Max, and the height of blade 1 is H, blade chord length sectional area L * H is at wind wheel wind sweeping area D
MaxSolidity shared among the * H is than L/ D
MaxBe 0.35, can obtain D thus
MaxBe 286% of chord length.By above configuration, wind wheel of the present utility model is in slow-speed of revolution working area, and driving moment is big, it is little to start wind speed, embodied the advantage of resistance type wind wheel, and in the high speed operation district, and rotating speed height, wind energy utilization are big, embodies the advantage of lifting wind wheel again.Both overcome lifting wind wheel and started difficulty, remedied the defective of resistance type wind speed round characteristic difference again, and made the efficiency characteristic that wind energy is converted to mechanical energy expand to the whole work wind speed of 1.6～30m/s district, thereby improved the whole wind energy conversion efficiency of wind wheel.
For making wind wheel of the present utility model obtain better wind energy utilization in wind field, the wind wheel among the embodiment of the present utility model is chosen wind wheel outside diameter D according to wind field addressing and power of fan size
MaxWith the ratio of blade height H be ratio of height to diameter H/D
MaxBe 1～3, can obtain blade height thus.
Figure 3 shows that the assembly structure schematic representation of vertical axis rotor of the present utility model and wind generating unit, the center portion that the center portion of upper cover plate 2 is equipped with radial ball bearing lower shoe 5 then is equipped with the centripetal thrust force cylindrical bearing.The sealing cover 3 at blower fan top and upper cover plate 2 connect firmly by bolt assembly.Lower shoe 5 is connected firmly by another group bolt assembly by corresponding flange plate with external rotor permanent magnet generator 6.
Blade in the foregoing description of the present utility model also can be three, four, more than six.
Be by two boards---upper cover plate, lower shoe are connected and constitute wind wheel up and down between blade 1 in the foregoing description of the present utility model and running shaft, in other embodiments of the present utility model, then can constitute wind wheel by the blade 1 that is connected of radially extended support arm on the running shaft, the wind-force that blade 1 is subjected to is passed to running shaft 4 through supporting cantilever, connecting with support arm in the wind wheel of blade 1, can be according to the length that designs support arm of selected chord length, established angle, ratio of height to diameter and solidity ratio and the link position of support arm and blade 1.
Claims (5)
1. rise resistance and merge wing plate type vertical axis rotor, comprise running shaft and be the circumferential a plurality of blades in center with the running shaft, it is characterized in that: each blade is that the height bearing of trend of side all around is axially consistent with running shaft, and wing plate is merged in the liter resistance that is aerofoil profile perpendicular to the shape of the cross section of running shaft, and the side is by lift convex surface cylinder around the described blade, resistance concave surface cylinder, be connected in the preceding transition arc cylinder between lift convex surface cylinder front end and the resistance concave surface cylinder front end, being connected in back transition arc cylinder between lift convex surface pole panel rear end and the resistance concave surface pole panel rear end surrounds and forms; Lift convex surface cylinder is connected smoothly by forward and backward two sections circular arc cylinder sections and forms, and resistance concave surface cylinder is to be made of one section circular arc cylinder.
2. wind wheel according to claim 1, it is characterized in that: the cross section of described blade is determined based on the aerofoil profile parameter of blade, described aerofoil profile parameter is by the string of a musical instrument, chord length obtains, the preceding transition arc cylinder of blade and the line segment at the ultimate range place between the transition arc cylinder of back are defined as the string of a musical instrument, the length of the string of a musical instrument is the chord length of blade, the aerofoil profile parameter is as follows: the preceding circular arc cylinder section radius of described lift convex surface is 28.5% of a chord length, arc angle is 72 °, the radius of back circular arc cylinder section 112 is 126% of a chord length, arc angle is 35 °, the radius of the circular arc cylinder of described resistance concave surface is 126% of a chord length, arc angle is 46 °, the radius of described leading edge transition arc cylinder 13 is 1.5% of a chord length, the radius of trailing edge transition arc cylinder 14 is 1% of a chord length, the maximum arch that ultimate range between lift convex surface and the resistance concave surface is defined as blade is thick, maximum arch is thick to be 15% of chord length, with in the leaf cross-section with lift convex surface and the equidistant curve definitions of resistance concave surface be mean camber line, ultimate range between the mean camber line and the string of a musical instrument is defined as the maximum camber of blade, and maximum camber is 16.5% of a chord length.
3. wind wheel according to claim 2, it is characterized in that: described each blade when mounted, has established angle between the line at the center of the string of a musical instrument of blade and string of a musical instrument forward terminal and running shaft, established angle is 60 °～70 °, and the string of a musical instrument forward terminal of each blade and the line at rotating shaft center are pressed five equilibrium angle layout configurations on circumference; The diameter of the place circumference of the outermost end of described each blade is the outside diameter of wind wheel, and the outside diameter of wind wheel is 286% of a chord length.
4. wind wheel according to claim 3 is characterized in that: the ratio of described wind wheel blade height and wind wheel outside diameter is that ratio of height to diameter is 1～3.
5. wind wheel according to claim 4, it is characterized in that: the two ends up and down of described each blade are connected in respectively to intersect vertically with running shaft and are connected on the upper cover plate and lower shoe of the circle that is provided with, and the outside diameter of described upper cover plate and lower shoe equates with the outside diameter of wind wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206414440U CN201865841U (en) | 2010-12-04 | 2010-12-04 | Lift-drag fused wing plate type vertical axis wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206414440U CN201865841U (en) | 2010-12-04 | 2010-12-04 | Lift-drag fused wing plate type vertical axis wind wheel |
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| Publication Number | Publication Date |
|---|---|
| CN201865841U true CN201865841U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206414440U Expired - Lifetime CN201865841U (en) | 2010-12-04 | 2010-12-04 | Lift-drag fused wing plate type vertical axis wind wheel |
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| Country | Link |
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| CN (1) | CN201865841U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022259A (en) * | 2010-12-04 | 2011-04-20 | 河南科技大学 | Lift-to-drag blending wing plate type vertical axis wind wheel |
| CN104728039A (en) * | 2015-03-25 | 2015-06-24 | 中国科学院南海海洋研究所 | Wind wheel of vertical-axis wind generator |
| CN106545466A (en) * | 2016-12-07 | 2017-03-29 | 上海理工大学 | A kind of resistance-type vertical axis wind turbine |
-
2010
- 2010-12-04 CN CN2010206414440U patent/CN201865841U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022259A (en) * | 2010-12-04 | 2011-04-20 | 河南科技大学 | Lift-to-drag blending wing plate type vertical axis wind wheel |
| CN102022259B (en) * | 2010-12-04 | 2012-09-05 | 河南科技大学 | Lift-to-drag blending wing plate type vertical axis wind wheel |
| CN104728039A (en) * | 2015-03-25 | 2015-06-24 | 中国科学院南海海洋研究所 | Wind wheel of vertical-axis wind generator |
| CN106545466A (en) * | 2016-12-07 | 2017-03-29 | 上海理工大学 | A kind of resistance-type vertical axis wind turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110615 Effective date of abandoning: 20120905 |