CN204003265U - A kind of vertical axis aerogenerator - Google Patents
A kind of vertical axis aerogenerator Download PDFInfo
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- CN204003265U CN204003265U CN201420378171.3U CN201420378171U CN204003265U CN 204003265 U CN204003265 U CN 204003265U CN 201420378171 U CN201420378171 U CN 201420378171U CN 204003265 U CN204003265 U CN 204003265U
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- wind wheel
- vertical axis
- blade
- type wind
- axis aerogenerator
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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
Abstract
The utility model relates to a kind of vertical axis aerogenerator, comprises V-type wind wheel, lower V-type wind wheel, prismatic blade, central rotating shaft, generator, flange plate, support tower and pawl type link; Upper and lower V-type wind wheel is fixed on respectively the upper and lower of central rotating shaft by pawl type link, the bottom of central rotating shaft connects generator by flange plate; Generator is fixed in support tower; Prismatic blade is vertically arranged between V-type wind wheel and lower V-type wind wheel.Vertical axis aerogenerator described in the utility model is combined by H type wind wheel and V-type wind wheel, avoid the load impact of strut resistance, aeroperformance and the self-startup ability of vertical axis aerogenerator are effectively improved, the load and the surface friction drag that have reduced wind wheeling rotor bearing, improved vertical axis aerogenerator wind energy utilization efficiency and reliability of operation.
Description
Technical field
The utility model relates to Wind Power Utilization technical field, particularly a kind of vertical axis aerogenerator.
Background technique
Wind-driven generator can be divided into horizontal axis wind-driven generator and vertical axis aerogenerator, it is generally acknowledged that horizontal axis wind-driven generator wind power utilization coefficient is higher, it is current main flow blower fan in the world, but due to the intrinsic Some features of horizontal axis wind-driven generator self, as vane stress situation complexity, need yaw system to wind, cabin, in the not factor such as easy-maintaining of tower top, makes the manufacture cost of horizontal-shaft wind turbine and operation maintenance cost higher; And vertical axis aerogenerator is owing to not needing yaw system, the parts such as gear-box can be placed near the ground or pylon bottom, and easy to maintenance, manufacture cost and operation cost are lower.In addition, it should be noted that, the climatic environment of wind energy turbine set is different from the environment under experimental condition, and the weather of wind field is more severe, and wind direction often changes, so consider windage loss lost, the performance of vertical axis windmill is not necessarily lower than horizontal-shaft wind turbine, and the blade of vertical axis windmill is not subject to the gravitational stresses effect of alternation, longer with respect to the fatigue life of Blades For Horizontal Axis Wind, consider the operation cost in wind-power electricity generation later stage, vertical axis windmill has very large potentiality.
Existing vertical axis windmill is divided into again shaft resistance type windmill and lift-type wind energy conversion system, and lift-type wind energy conversion system is compared with shaft resistance type windmill, and power coefficient is higher, apply comparatively extensive, wherein H type and
type is most widely used, because H type wind wheel sweeping area is generally greater than
type wind wheel, and H type prismatic blade with respect to
the manufacture of type bent blades is simple, but traditional H type vertical axis aerogenerator has the following disadvantages:
Self-startup ability is poor, and H type wind-driven generator does not have self-startup ability, and therefore, the self-starting problem that how to solve vertical axis windmill is the focus of studying at present.
Common vertical axis aerogenerator generally connects blade and central rotating shaft by strut, and the resistance that strut produces accounts for the more than 10% of whole Fans.
The weight of the whole wind wheel of vertical axis windmill all acts on rotor bearing, and the surface friction drag that this has increased rotor bearing greatly reduced the performance of blower fan system, and excessive load has shortened the life-span of bearing.
Model utility content
In view of this, the utility model provides a kind of vertical axis aerogenerator, effectively improve aeroperformance and the self-startup ability of vertical axis aerogenerator, reduced load and the surface friction drag of wind wheeling rotor bearing, improved vertical axis aerogenerator wind energy utilization efficiency and reliability of operation.
For achieving the above object, vertical axis aerogenerator described in the utility model by the following technical solutions:
A kind of vertical axis aerogenerator, comprises V-type wind wheel, lower V-type wind wheel, prismatic blade, central rotating shaft, generator, flange plate, support tower and pawl type link; Described upper V-type wind wheel is fixed on the top of central rotating shaft by pawl type link, described lower V-type wind wheel is fixed on the bottom of central rotating shaft by pawl type link, and the bottom of described central rotating shaft connects generator by flange plate; Described generator is fixed in support tower; Described prismatic blade is vertically arranged between V-type wind wheel and lower V-type wind wheel.
The opening direction of described upper V-type wind wheel and lower V-type wind wheel is contrary.
Upper V-type wind wheel comprises upper blade, described lower V-type wind wheel comprises lower blade, and Open Side Down for described upper V-type wind wheel, and the suction surface of upper blade is fixed on pawl type link towards tilting, described lower V-type wind wheel opening upwards, the suction surface of lower blade is fixed on pawl type link towards tilting.
The exhibition of described upper blade to and the central axis of pawl type link be that angle β between the central axis of central rotating shaft is 0 ° to 90 °.
The blade quantity of upper V-type wind wheel and lower V-type wind wheel is at least two.
Described upper blade is consistent with aerofoil profile leading edge and the trailing edge installation direction of lower blade, and in the sense of rotation of described vertical axis aerogenerator, the leading edge of upper blade is positioned at the downstream of trailing edge.
Described prismatic blade is vertically arranged on the lower end of upper blade and the upper end of lower blade, and the leading edge of straight-vaned leading edge and trailing edge and upper blade and trailing edge is corresponding is connected, and straight-vaned leading edge and trailing edge are also with the leading edge of lower blade with trailing edge is corresponding is connected.
Described straight-vaned pressure side is towards central rotating shaft.
Described straight-vaned pressure side central rotating shaft dorsad.
Vertical axis aerogenerator described in the utility model is combined by H type wind wheel and V-type wind wheel, than traditional H type wind wheel, avoid the load impact of strut resistance, aeroperformance and the self-startup ability of vertical axis aerogenerator are effectively improved, the load and the surface friction drag that have reduced wind wheeling rotor bearing, improved vertical axis aerogenerator wind energy utilization efficiency and reliability of operation.
Brief description of the drawings
Fig. 1 is vertical axis aerogenerator embodiment's one described in the utility model overall structure schematic diagram;
Fig. 2 is wherein a part of structural representation of the vertical axis aerogenerator described in embodiment one;
Fig. 3 is another part structural representation of the vertical axis aerogenerator described in embodiment one;
Fig. 4 is vertical axis aerogenerator embodiment's two described in the utility model structural representation;
Fig. 5 is vertical axis aerogenerator embodiment's three described in the utility model structural representation;
Fig. 6 is vertical axis aerogenerator embodiment's four described in the utility model structural representation;
Fig. 7 is blade of vertical axis wind turbine airfoil geometry parameter and air-flow angle schematic diagram;
Fig. 8 is the H type wind wheel schematic diagram of the vertical axis aerogenerator in the utility model embodiment one.
Fig. 9 is the H type wind wheel of the vertical axis aerogenerator in the utility model embodiment one force analysis schematic diagram in the plane at incircle place.
Figure 10 is the V-type wind wheel of the vertical axis aerogenerator in the utility model embodiment one force analysis schematic diagram in the plane at incircle place.
Embodiment
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
Embodiment one
Fig. 1 is the overall structure schematic diagram of vertical axis aerogenerator described in the utility model; Fig. 2 is wherein a part of structural representation of vertical axis aerogenerator described in the utility model; Fig. 3 is another part structural representation of vertical axis aerogenerator described in the utility model.As shown in the figure, described vertical axis aerogenerator 100 is a kind of H type and V-type Combined wind-driven generator with vertical shaft, and described vertical axis aerogenerator 100 comprises V-type wind wheel 1a, lower V-type wind wheel 2a, prismatic blade 3a, central rotating shaft 4a, generator 5a, flange plate 6a, support tower 7a and pawl type link 8a; Respectively as shown in Figures 2 and 3, described upper V-type wind wheel 1a is fixed on the top of central rotating shaft 4a by pawl type link 8a, described lower V-type wind wheel 2a is fixed on the bottom of central rotating shaft 4a by pawl type link 8a, the bottom of described central rotating shaft 4a connects generator 5a by flange plate 6a; Described generator 5a is fixed on support tower 7a; Described prismatic blade 3a is vertically arranged between V-type wind wheel 1a and lower V-type wind wheel 2a.
As shown in FIG. 2 and 3, described upper V-type wind wheel 1a comprises upper blade 9a, described lower V-type wind wheel 2a comprises lower blade 10a, in the present embodiment, the opening direction of described upper V-type wind wheel 1a and lower V-type wind wheel 2a is contrary, as shown in the figure, Open Side Down for described upper V-type wind wheel 1a, upper blade 9a suction surface (9a3) is fixed on pawl type link 8a towards tilting upper, the exhibition of described upper blade 9a to and the central axis of pawl type link 8a be that angle β between the central axis of central rotating shaft 4a is 0 ° to 90 °; Described lower V-type wind wheel 2a opening upwards, lower blade 10a suction surface (10a1) is fixed on pawl type link 8a towards tilting, as mentioned above, upper V-type wind wheel 1a and lower V-type wind wheel 2a are symmetrical arranged, therefore, the exhibition of described lower blade 10a to and the central axis of pawl type link 8a be that angle between the central axis of central rotating shaft 4a is also β.In the present embodiment, described upper blade 9a and lower blade 10a are prismatic blade, and the blade quantity of upper V-type wind wheel 1a and lower V-type wind wheel 2a is at least two, described upper blade 9a is consistent with aerofoil profile leading edge and the trailing edge installation direction of lower blade 10a, in the sense of rotation of described vertical axis aerogenerator 100, the leading edge 9a1 of described upper blade 9a is positioned at the downstream of trailing edge 9a2, in the present embodiment, the sense of rotation of described vertical axis aerogenerator 100 is, look downwards from the top of the vertical axis aerogenerator 100 shown in Fig. 1, described vertical axis aerogenerator 100 turns clockwise around central rotating shaft 4a.
As mentioned above, described prismatic blade 3a is vertically arranged between V-type wind wheel 1a and lower V-type wind wheel 2a, as shown in Figure 1, described prismatic blade 3a is vertically arranged on the lower end of upper blade 9a and the upper end of lower blade 10a, and straight-vaned leading edge (3a4) and leading edge (9a1) and trailing edge (9a2) corresponding be connected of trailing edge (3a5) with upper blade (9a), straight-vaned leading edge (3a4) and trailing edge (3a5) also with leading edge (10a2) and corresponding connection of trailing edge (10a3) of lower blade (10a), the pressure side 3a1 of prismatic blade 3a is towards central rotating shaft 4a.
Embodiment two
Fig. 4 is the another kind of structural representation of vertical axis aerogenerator described in the utility model.As shown in the figure, the structure of a kind of vertical axis aerogenerator 100 of the structure of the vertical axis aerogenerator in the present embodiment and embodiment is roughly the same, at this, no longer describes its concrete structure, unique different place is, the pressure side 3b1 of prismatic blade 3b central rotating shaft 4b dorsad in the present embodiment.
Embodiment three
Fig. 5 is the another kind of structural representation of vertical axis aerogenerator described in the utility model.As shown in the figure, in vertical axis aerogenerator in the present embodiment, upper V-type wind wheel 1c opening upwards, Open Side Down for lower V-type wind wheel 2c, and the pressure side 3c1 of the prismatic blade 3c in the present embodiment is towards central rotating shaft 4c, pressure side 3c1 central rotating shaft 4c (not shown) dorsad that also can prismatic blade 3c.
Embodiment four
Fig. 6 is the another kind of structural representation of vertical axis aerogenerator described in the utility model.As shown in the figure, in vertical axis aerogenerator in the present embodiment, adopt V-type wind wheel 1d1,1d2 and the 1d3 of three layers of opening upwards, prismatic blade 3d is supported by the blade of V-type wind wheel, and the pressure side 3d1 of the prismatic blade 3d in the present embodiment is towards central rotating shaft 4d, can be also the pressure side 3d1 central rotating shaft 4d (not shown) dorsad of prismatic blade 3d.
As the distortion of the present embodiment, can also adopt the V-type wind wheel of the double-deck or more multi-layered opening upwards of individual layer, or adopt the double-deck or more multi-layered V-type wind wheel that Open Side Down of individual layer.
Below in conjunction with accompanying drawing 7-Figure 10, and in conjunction with the embodiments a kind of described vertical axis aerogenerator, describe the force analysis of each blade in detail.
Fig. 7 is blade of vertical axis wind turbine airfoil geometry parameter and air-flow angle schematic diagram.In figure, the airfoil trailing edge that A point is blade, the aerofoil profile leading edge of B point position blade, the line of AB is the aerofoil profile string of a musical instrument, and wherein the face at the upper semisection camber line place between AB is suction surface 3a2, and the face at the lower semisection camber line place between AB is pressure side 3a3, C point is positioned on pressure side 3a3, the line of AC is zero-lift line, and, when coming flow path direction d and AC line parallel or approaching when parallel, blade will not produce lift; The length of described string of a musical instrument AB is n, described come angle between flow path direction d and string of a musical instrument AB be i, this angle i is how much angles of attack, the angle between incoming flow wind direction d and zero-lift line AC is δ.
Fig. 8 is the H type wind wheel schematic diagram of the vertical axis aerogenerator in embodiment one.As shown in the figure, the incircle of prismatic blade 3a is R, and its center is O, and this H type wind wheel rotates around center O.
Fig. 9 is the force analysis schematic diagram of described H type wind wheel in the plane at incircle R place.In Fig. 9, carrying out flow path direction is d1, and Va is incoming flow wind speed, and Vt is blade tangential velocity, and L1 is lift, and D1 is resistance, and Vo is the relative speed of wind at blade place, and this wind speed is the aggregate velocity of Va and Vt, and the angle of Vo and vane airfoil profile zero-lift line is absolute angle of attack.From aerodynamic relevant knowledge, in the time that air flow stream is crossed the aerofoil profile of absolute angle of attack, by the lift L1 and the resistance D1 that is parallel to Vo that produce perpendicular to Vo, the two synthesize F1, by Vo=Va-Vt, if Va and Vt are known, can obtain Vo, the suffered aerodynamic force F1 of blade also can obtain.Show in the research of the velocity triangle of different azimuth for blade, except when the zero-lift line of vane airfoil profile is outside the position parallel or approaching with wind direction, the aerodynamic force in other orientation all produces a moment that drives wind wheel rotation.By wind wheel force analysis of each blade when the diverse location is obtained, for the wind wheel of odd number blade, no matter where wind wheel is in, all will produce a driving torque that drives wind wheel rotation.
Figure 10 is the force analysis schematic diagram of described V-type wind wheel in the plane at incircle R place.As shown in figure 10, due to the blade exhibition of V-type wind wheel to the axial angle of central rotating shaft be β, so the aerofoil section plane of V-type wind wheel blade and horizontal plane angle are also β, the wind speed that the stream wind that wind speed is Va ' acts on the aerofoil profile of V-type wind wheel blade is Va ' * cos β.As shown in figure 10, incoming flow wind act on aerodynamic force on V-type wind wheel blade similar with act on the aerodynamic force on H type wind wheel blade, unique different be that the blade of V-type wind wheel is opened up to having an angle β with central rotating shaft, the lift L2 that stream wind acts on V-type wind wheel is except resolving into the component F that is parallel to plane of rotation
tdrive outside wind wheel rotation, can also resolve into the component F perpendicular to plane of rotation
l, above act wind wheel.
When wind wheel is during by static startup, when incoming flow wind acts on vertical axis aerogenerator described in the utility model, H type wind wheel produces the torque T 1 that drives wind wheel rotation, and V-type wind wheel produces the torque T 2 that drives wind wheel rotation.Vertical axis aerogenerator described in the utility model, compared with traditional H type vertical axis aerogenerator, has increased the starting torque T2 of V-type wind wheel, has reduced the startup wind speed of wind-driven generator.
After wind wheel starts, suppose that be constant through the wind speed and direction of wind wheel in section sometime, when wind energy conversion system starts and reaches after design speed, impeller will move in a circle with constant rotational speed, so by wind wheel blade force analysis of each blade when the diverse location is obtained, for the H type wind wheel of odd number blade, no matter where wind wheel is in, all will produce a driving moment T1 who drives wind wheel rotation.And for V-type wind wheel, install due to blade lean, so after wind wheel rotates, V-type wind wheel blade has just converted lift L to the wind-force being subject to, again lift L is resolved into the component F that is parallel to plane of rotation
twith the component F perpendicular to plane of rotation
l, be parallel to the component F of plane of rotation
twill produce the moment T2 that drives wind wheel rotation, thereby accelerate the rotation of wind wheel, improve the wind energy utilization efficiency of wind wheel; Perpendicular to the component F of plane of rotation
lupper act wind wheel, the load that makes wind wheel act on rotor bearing reduces, thereby has reduced the surface friction drag of bearing.
Vertical axis aerogenerator described in the utility model is combined by H type wind wheel and V-type wind wheel, than traditional H type wind wheel, avoid the load impact of strut resistance, aeroperformance and the self-startup ability of vertical axis aerogenerator are effectively improved, the load and the surface friction drag that have reduced wind wheeling rotor bearing, improved vertical axis aerogenerator wind energy utilization efficiency and reliability of operation.
Claims (9)
1. a vertical axis aerogenerator, it is characterized in that, described vertical axis aerogenerator comprises V-type wind wheel (1a), lower V-type wind wheel (2a), prismatic blade (3a), central rotating shaft (4a), generator (5a), flange plate (6a), support tower (7a) and pawl type link (8a);
Described upper V-type wind wheel (1a) is fixed on the top of central rotating shaft (4a) by pawl type link (8a), described lower V-type wind wheel (2a) is fixed on the bottom of central rotating shaft (4a) by pawl type link (8a), the bottom of described central rotating shaft (4a) connects generator (5a) by flange plate (6a); Described generator (5a) is fixed in support tower (7a); Described prismatic blade (3a) is vertically arranged between V-type wind wheel (1a) and lower V-type wind wheel (2a).
2. a kind of vertical axis aerogenerator according to claim 1, is characterized in that, the opening direction of described upper V-type wind wheel (1a) and lower V-type wind wheel (2a) is contrary.
3. a kind of vertical axis aerogenerator according to claim 2, it is characterized in that, upper V-type wind wheel (1a) comprises upper blade (9a), described lower V-type wind wheel (2a) comprises lower blade (10a), Open Side Down for described upper V-type wind wheel (1a), the suction surface (9a3) of upper blade (9a) is fixed on pawl type link (8a) towards tilting, described lower V-type wind wheel (2a) opening upwards, the suction surface (10a1) of lower blade (10a) is fixed on pawl type link (8a) towards tilting.
4. a kind of vertical axis aerogenerator according to claim 3, it is characterized in that, the exhibition of described upper blade (9a) to and the central axis of pawl type link (8a) be that angle β between the central axis of central rotating shaft (4a) is 0 ° to 90 °.
5. a kind of vertical axis aerogenerator according to claim 4, is characterized in that, the blade quantity of upper V-type wind wheel (1a) and lower V-type wind wheel (2a) is at least two.
6. a kind of vertical axis aerogenerator according to claim 5, it is characterized in that, described upper blade (9a) is consistent with aerofoil profile leading edge and the trailing edge installation direction of lower blade (10a), in the sense of rotation of described vertical axis aerogenerator, the leading edge (9a1) of upper blade (9a) is positioned at the downstream of trailing edge (9a2).
7. a kind of vertical axis aerogenerator according to claim 6, it is characterized in that, described prismatic blade (3a) is vertically arranged on the lower end of upper blade (9a) and the upper end of lower blade (10a), and straight-vaned leading edge (3a4) and leading edge (9a1) and trailing edge (9a2) corresponding be connected of trailing edge (3a5) with upper blade (9a), straight-vaned leading edge (3a4) and trailing edge (3a5) also with leading edge (10a2) and corresponding connection of trailing edge (10a3) of lower blade (10a).
8. a kind of vertical axis aerogenerator according to claim 7, is characterized in that, the pressure side (3a1) of described prismatic blade (3a) is towards central rotating shaft (4a).
9. a kind of vertical axis aerogenerator according to claim 7, is characterized in that, the pressure side (3a1) of described prismatic blade (3a) central rotating shaft (4a) dorsad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420378171.3U CN204003265U (en) | 2014-07-10 | 2014-07-10 | A kind of vertical axis aerogenerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420378171.3U CN204003265U (en) | 2014-07-10 | 2014-07-10 | A kind of vertical axis aerogenerator |
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| CN204003265U true CN204003265U (en) | 2014-12-10 |
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| CN201420378171.3U Expired - Fee Related CN204003265U (en) | 2014-07-10 | 2014-07-10 | A kind of vertical axis aerogenerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676225A (en) * | 2017-09-29 | 2018-02-09 | 天津大学 | A kind of small-sized asymmetric wing prismatic blade vertical axis aerogenerator |
| CN109162864A (en) * | 2018-08-31 | 2019-01-08 | 烟台南山学院 | A kind of fan blade type variable wind power generating set with vertical shaft |
| CN110541791A (en) * | 2019-09-12 | 2019-12-06 | 山东大学 | Self-adjusting propeller V-shaped self-starting vertical axis wind turbine and method thereof |
-
2014
- 2014-07-10 CN CN201420378171.3U patent/CN204003265U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676225A (en) * | 2017-09-29 | 2018-02-09 | 天津大学 | A kind of small-sized asymmetric wing prismatic blade vertical axis aerogenerator |
| CN109162864A (en) * | 2018-08-31 | 2019-01-08 | 烟台南山学院 | A kind of fan blade type variable wind power generating set with vertical shaft |
| CN110541791A (en) * | 2019-09-12 | 2019-12-06 | 山东大学 | Self-adjusting propeller V-shaped self-starting vertical axis wind turbine and method thereof |
| CN110541791B (en) * | 2019-09-12 | 2021-01-29 | 山东大学 | Self-adjusting propeller V-shaped self-starting vertical axis wind turbine and method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20190710 |