CN109185051B - Wind turbine and vertical axis wind generating set - Google Patents
Wind turbine and vertical axis wind generating set Download PDFInfo
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- CN109185051B CN109185051B CN201810856582.1A CN201810856582A CN109185051B CN 109185051 B CN109185051 B CN 109185051B CN 201810856582 A CN201810856582 A CN 201810856582A CN 109185051 B CN109185051 B CN 109185051B
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- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 19
- 230000007704 transition Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 230000001066 destructive effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
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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 invention relates to a wind turbine and a vertical axis wind generating set. This wind vortex ware includes: a blade, an arcuate sheet structure, the blade having opposing outer and inner surfaces; the flow disturbing device extends spirally on the outer surface along the axial direction of the blade; and the guide rod penetrates through the blade along the axial direction of the blade, and the blade is rotatably arranged through the guide rod. According to the invention, the turbulence device is arranged on the outer surface of the blade, so that the wind turbine can reduce the vortex-induced vibration effect of the blade and enhance the typhoon resistance of the vertical axis wind generating set.
Description
Technical Field
The invention relates to the technical field of vibration suppression of vortex-induced vibration, in particular to a wind turbine and a vertical axis wind generating set.
Background
In the field of wind power, an oversized and oversized unit is a future development trend, and a vertical axis wind generating set can be higher and larger than a horizontal axis wind generating set due to the fact that the transverse shearing force of a wind wheel of the vertical axis wind generating set to a tower column is small, and under the condition that the bearing of the tower column is allowed, the wind wheel of the vertical axis wind generating set can be higher and larger than the horizontal axis wind generating set, and therefore the generating efficiency of the vertical axis wind generating.
The wind wheel comprises a plurality of blades distributed around the rotating shaft, and the wind wheel is pushed to rotate around the rotating shaft through wind power so as to drive the generator to generate electricity. The blade vibrates in large amplitude at a certain wind speed, and this phenomenon is called vortex-induced vibration of the blade. Some wind generating sets are additionally provided with vortex generators on the windward side of the blades, the shapes of the vortex generators are similar to those of small vortex generators on the wings of an airplane, and the vortex generators are used for reducing vortex-induced vibration and increasing the wind energy utilization efficiency of the blades. However, the function is relatively single, for example, the typhoon resistance of the wind turbine cannot be enhanced.
Disclosure of Invention
The invention aims to provide a wind turbine and a vertical axis wind generating set, wherein the wind turbine can reduce the vortex-induced vibration effect of blades and enhance the typhoon resistance of the vertical axis wind generating set.
In one aspect, an embodiment of the present invention provides a wind turbine for a generator of a vertical axis wind turbine, where the wind turbine includes: a blade, an arcuate sheet structure, the blade having opposing outer and inner surfaces; the flow disturbing device extends spirally on the outer surface along the axial direction of the blade; and the guide rod penetrates through the blade along the axial direction of the blade, and the blade is rotatably arranged through the guide rod.
According to an aspect of the embodiment of the present invention, the cross section of the flow disturbing device includes a first side, a second side and a third side which are connected to each other two by two, the flow disturbing device is connected to the outer surface of the blade through the third side, and an included angle between the first side and the third side and an included angle between the second side and the third side are acute angles.
According to an aspect of the embodiment of the invention, the first side edge is connected with the second side edge in a smooth transition manner.
According to an aspect of an embodiment of the present invention, the cross section of the flow disturbing device includes a first side, a second side, a third side, and a fourth side that are connected to each other, the flow disturbing device is connected to the outer surface of the blade through the third side, the fourth side is disposed parallel to the third side, and a length dimension of the fourth side is smaller than a length dimension of the third side.
According to an aspect of the embodiment of the present invention, at least one of the first side edge and the second side edge is a straight line or a concave curve.
According to an aspect of an embodiment of the invention, the guide rod is continuously distributed with the outer surface of the blade throughout the part of the blade body; the turbulence device comprises one strip-shaped belt or more than two strip-shaped belts, and the more than two strip-shaped belts are arranged at a preset angle or in parallel on the outer surface of the blade.
According to one aspect of an embodiment of the present invention, the portion of the guide rod extending through the blade divides the blade into a first blade and a second blade; the vortex device includes the bar area more than two, and the equal spiral of surface of first blade and second blade extends and is provided with an at least bar area, and an at least bar area is in the crisscross setting in the both sides of guide arm or aligns the setting.
According to an aspect of the embodiment of the present invention, two or more strip-shaped bands are disposed at a predetermined angle or in parallel on the outer surfaces of the first blade and the second blade, respectively.
On the other hand, the embodiment of the invention also provides a vertical axis wind generating set, which comprises: the central shaft of the generator is vertical to the horizontal plane, and a plurality of pairs of mounting lugs are arranged on the outer peripheral side of a rotor of the generator at intervals; as with any of the previously described wind turbines, the wind turbine is rotatably connected between each pair of mounting tabs by a guide rod.
According to the wind turbine and the vertical axis wind generating set provided by the embodiment of the invention, the turbulence devices are arranged on the outer surfaces of the blades, so that the wind turbine can reduce the vortex-induced vibration effect of the blades and can enhance the typhoon resistance of the vertical axis wind generating set.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a flow perturbation device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first cross-section of the flow perturbation device shown in FIG. 1;
FIG. 3 is a structural schematic view of a second cross-section of the flow perturbation device shown in FIG. 1;
FIG. 4 is a schematic view of a third cross-section of the flow perturbation device shown in FIG. 1;
FIG. 5 is a schematic view of a fourth cross-section of the flow perturbation device shown in FIG. 1;
FIG. 6 is a schematic structural diagram of a first wind turbine provided in an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a second wind turbine provided in an embodiment of the present invention;
FIG. 8 is a schematic structural view of a third wind turbine provided in accordance with an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a fourth wind turbine provided in accordance with an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a fifth wind turbine provided in accordance with an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a sixth wind turbine provided in the embodiment of the present invention;
fig. 12 is a schematic structural diagram of a seventh wind turbine provided in the embodiment of the present invention;
fig. 13 is a schematic structural diagram of an eighth wind turbine provided in the embodiment of the present invention;
fig. 14 is a partial structural schematic diagram of a vertical axis wind turbine generator set according to an embodiment of the invention.
Wherein:
10-a flow disturbing device; 1-a first side; 2-a second side edge; 3-a third side; 4-fourth side; a-an outer surface; b-an inner surface;
20-blades; 21-a first blade; 22-a second blade; 30-a guide rod;
100-a wind turbine; 200-a generator; 210-mounting tabs.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following description is given with the directional terms shown in the drawings, and is not intended to limit the specific structure of the wind turbine and the vertical axis wind turbine generator set provided by the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For better understanding of the present invention, a wind turbine and a vertical axis wind turbine generator set according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 14.
Fig. 1 is a schematic structural diagram of a spoiler apparatus according to an embodiment of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a flow disturbing device 10 for a wind turbine of a vertical axis wind turbine generator system, wherein the flow disturbing device 10 extends spirally on an outer surface of a blade of the wind turbine along an axial direction of the wind turbine.
When external natural wind blows on the blades of the wind turbine, the turbulence device 10 can break up the wind turbulence, so that the wind force blowing on the blades is reduced to the minimum, and the possibility of the vortex-induced vibration effect of the blades of the wind turbine is reduced.
According to the turbulence device 10 provided by the embodiment of the invention, the outer surface of the blade of the wind turbine is spirally extended, so that the possibility of the blade generating a vortex-induced vibration effect can be reduced.
The following describes the specific structure of the spoiler in detail with reference to the accompanying drawings.
FIG. 2 is a structural schematic view of a first cross-section of the flow perturbation device shown in FIG. 1, and FIG. 3 is a structural schematic view of a second cross-section of the flow perturbation device shown in FIG. 1;
referring to fig. 2 and 3, the cross section of the flow disturbing device 10 includes a first side 1, a second side 2 and a third side 3 connected to each other two by two, the flow disturbing device 10 is connected to the outer surface of the blade through the third side 3, and the included angle between the first side 1 and the third side 3 and the included angle between the second side 2 and the third side 3 are acute angles.
Further, at least one of first side 1 and second side 2 is the straight line, for example, first side 1 and second side 2 are the straight line, and when external natural wind blows the blade of wind vortex ware, natural wind divides and breaks up at the crossing position punishment of first side 1 and second side 2 to blow the surface of blade along first side 1 and second side 2 respectively, thereby effectively restrain the air current vortex of blade, and then restrain the vortex-induced vibration of blade, reduce the blade and form the produced destructive power of vortex-induced vibration effect to the blade structure.
Preferably, the first side edge 1 and the second side edge 2 are smoothly transited, as shown in fig. 2. When external natural wind blows the blade of wind vortex ware on, natural wind divides and breaks up in first side 1 and the punishment of 2 smooth transition's on the position punishment of second side, and the position of the two smooth transition can reduce the initial impact force that contacts the vortex device of natural wind, then blow the surface of blade along first side 1 and second side 2 respectively, thereby impact force when natural wind contacts with the vortex device blows the blade again after once buffering on, can effectively restrain the air current vortex of blade, and then restrain the vortex-induced vibration of blade, reduce the blade and form the destructive power that the vortex-induced vibration effect produced to the blade structure.
As an alternative embodiment, at least one of the first side 1 and the second side 2 is a concave curve, for example, both the first side 1 and the second side 2 are concave curves, and the first side 1 and the second side 2 may be directly connected, and preferably, they are connected in a smooth transition manner, as shown in fig. 3. When external natural wind blows on blades of the wind turbine, the natural wind is divided and scattered at the positions where the first side edge 1 and the second side edge 2 are in smooth transition, and the impact force of the natural wind initially contacting the turbulence device can be reduced at the positions where the two are in smooth transition; then blow the surface of blade along first side 1 and second side 2 respectively, the impact force when the curve of the indent of first side 1 and second side 2 can further cushion natural wind and first side 1 or second side 2 contact for the straight line that fig. 2 shows to the impact force of natural wind and vortex device blows the blade again after buffering twice, can further effectively restrain the air current vortex of blade, and then restrain the vortex-induced vibration of blade, further reduce the blade and form the produced destructive power of vortex-induced vibration effect to the blade structure.
Fig. 4 is a structural view of a third cross-section of the flow perturbation device shown in fig. 1, and fig. 5 is a structural view of a fourth cross-section of the flow perturbation device shown in fig. 1.
Referring to fig. 4 and 5, the cross section of the spoiler 10 includes a first side 1, a second side 2, a third side 3 and a fourth side 4 connected to each other, the spoiler 10 is connected to the outer surface of the blade 11 through the third side 3, the fourth side 4 is parallel to the third side 3, and the length of the fourth side 4 is smaller than the length of the third side 3. Preferably, the first side edge 1 and the second side edge 2 are symmetrically arranged with respect to the middle line of the third side edge 3 and the fourth side edge 4.
At least one of the first side 1 and the second side 2 is a straight line, for example, both the first side 1 and the second side 2 are straight lines, as shown in fig. 4.
At least one of the first side 1 and the second side 2 is a concave curve, for example, both the first side 1 and the second side 2 are concave curves, as shown in fig. 5.
It is understood that the cross-section of the flow perturbation device 10 may have various structural forms, and is not limited to the structure shown in the drawings, for example, any one of the first side 1 and the second side 2 of the cross-section of the flow perturbation device 10 in fig. 2 to 5 may be a straight line, and the other one is a concave curve, etc.
Fig. 6 is a schematic structural diagram of a first wind turbine provided in an embodiment of the present invention.
Referring to fig. 6, an embodiment of the present invention provides a wind turbine 100 for a generator of a vertical axis wind turbine, where the wind turbine 100 includes: a blade 20, a guide rod 30, and a spoiler 10 as described above.
The blade 20 is an arcuate sheet structure having opposite outer and inner surfaces a, b. The spoiler 10 extends spirally on the outer surface a in the axial direction of the blade 20.
The guide bar 30 penetrates the blade 20 in the axial direction of the blade 20, and the blade 20 is rotatably provided by the guide bar 30. The guide rod 30 may be pivotally connected to the outer periphery of the rotor of the motor, on one hand, the guide rod 30 may increase the rigidity of the blade 20 to prevent the blade 20 from deforming, and on the other hand, the guide rod 30 may support the blade 20 to rotate the blade 20.
When the wind turbine 100 is in a working state, the guide rod 30 drives the blade 20 to rotate for a predetermined angle relative to the generator of the vertical axis wind generating set, the inner surface b is a windward side, the outer surface a is a leeward side, and the arc concave structure of the inner surface b can be used for accumulating wind energy so as to push the generator to rotate and generate electricity, and the turbulence device 10 arranged on the outer surface a can break up the wind turbulence in the downwind direction, so that the possibility of the vortex-induced vibration effect of the blade 20 is reduced, and the wind energy utilization rate is improved.
When the wind turbine 100 is in a non-working state, for example, when the vertical axis wind turbine generator set is initially hoisted or is subjected to fault maintenance, the guide rod 30 drives the blade 20 to rotate reversely relative to the generator, so that the inner surface b faces the generator, when wind blows to the wind turbine 100, the turbulence device 10 arranged on the outer surface a can break up wind turbulence, wind blowing to the wind turbine 100 is reduced to the minimum, the hoisting efficiency and safety of the wind turbine generator set are effectively improved, and the operation window period is prolonged. In addition, if severe weather such as typhoon occurs, the wind turbine 100 can be adjusted to be in a non-working state, the typhoon resistance of the unit is enhanced, and the stability of the unit is improved.
According to the wind turbine 100 provided by the embodiment of the invention, the turbulence device 10 is arranged on the outer surface a of the blade 20, so that the typhoon resistance of the vertical axis wind generating set can be enhanced while the vortex-induced vibration effect of the blade 20 is reduced.
The specific structure of the wind turbine 100 is described in further detail below with reference to the drawings.
Referring again to fig. 6, the guide rod 30 is continuously distributed with the outer surface a of the vane 20 throughout the portion of the vane 20. For example, the guide rod 30 is integrally formed with the blade 20, and the cross section of the guide rod 30 may be a square or a circular arc segment, and the thickness of the guide rod is greater than or equal to the thickness of the blade 20. When the thickness of the guide rod 30 is equal to that of the blade 20, the outer surface a and the inner surface b of the blade 20 and the guide rod 30 are continuously distributed; when the thickness of the guide bar 30 is greater than that of the blade 20, the outer surface a of the blade 20 and the guide bar 30 are continuously distributed.
Both ends of the guide bar 30 are disposed to protrude from the blade 20 and support the blade 20. The spoiler 10 may include a strip-shaped band spirally extending on the outer surface a in the axial direction of the blade 20.
Fig. 7 is a schematic structural diagram of a second wind turbine provided in the embodiment of the present invention, and fig. 8 is a schematic structural diagram of a third wind turbine provided in the embodiment of the present invention.
Referring to fig. 7 and 8, the spoiler 10 may further include more than two strip-shaped bands spirally extending on the outer surface a in the axial direction of the blade 20. The two or more strip-shaped bands may be disposed in parallel with each other on the outer surface a of the blade 20 as shown in fig. 7, or the two or more strip-shaped bands may be disposed at a predetermined angle on the outer surface a of the blade 20 as shown in fig. 8, so that the wind blowing from the wind turbine 100 is more divided, and the wind blowing from the wind turbine 100 is further reduced.
Fig. 9 is a schematic structural diagram of a fourth wind turbine provided in the embodiment of the present invention, and fig. 10 is a schematic structural diagram of a fifth wind turbine provided in the embodiment of the present invention.
Referring to fig. 9 and 10, the guide rod 30 penetrates the blade 20 to divide the blade 20 into a first blade 21 and a second blade 22. The guide rod 30 and the blade 20 are integrally formed, and the cross section of the guide rod 30 is a square or circular arc section, and the thickness of the guide rod is larger than that of the blade 20. The guide rod 30 may also be circular in cross-section and have a diameter dimension greater than the thickness of the blade 20. The guide rod 30 having a circular cross section will be described as an example.
The spoiler 10 includes two or more strip bands, and the equal spiral of surface a of first blade 21 and second blade 22 extends and is provided with at least one strip band, and at least one strip band can align the setting in the both sides of guide arm 30.
When the outer surfaces a of the first blade 21 and the second blade 22 are each spirally extended with one strip, as shown in fig. 9, the wind turbine 100 has a structure similar to that shown in fig. 6 except that the guide bar 30 cuts off one continuously distributed strip. When two or more strip-shaped bands are spirally extended from the outer surfaces a of the first blade 21 and the second blade 22, the two or more strip-shaped bands may be arranged in parallel with each other, as shown in fig. 10, and the wind turbine 100 has a structure similar to that shown in fig. 7, except that the guide rod 30 cuts off a plurality of strip-shaped bands continuously distributed in the middle. The strip-shaped strips aligned on both sides of the guide rod 30 and the cutting action of the guide rod 30 can divide the blown wind into various directions, so that the wind blowing to the wind turbine 100 is further reduced compared with the spoiler 10 in fig. 6 and 7.
Fig. 11 is a schematic structural diagram of a sixth wind turbine provided in the embodiment of the present invention, fig. 12 is a schematic structural diagram of a seventh wind turbine provided in the embodiment of the present invention, and fig. 13 is a schematic structural diagram of an eighth wind turbine provided in the embodiment of the present invention.
Referring to fig. 11 to 13, at least one strip is disposed on both sides of the guide bar 30 in a staggered manner. For example, when one strip-shaped band is spirally extended from the outer surfaces a of the first blade 21 and the second blade 22, one strip-shaped band is alternately disposed on both sides of the guide bar 30, as shown in fig. 11. When two or more strip-shaped bands are spirally extended from the outer surfaces a of the first blade 21 and the second blade 22, the two or more strip-shaped bands may be alternately disposed on both sides of the guide bar 30, and at the same time, the two or more strip-shaped bands may be disposed in parallel on the outer surfaces a of the first blade 21 and the second blade 22, respectively, as shown in fig. 12.
In addition, two or more strip-shaped bands may be disposed at predetermined angles on the outer surfaces a of the first blade 21 and the second blade 22, respectively, as shown in fig. 13. The strip-shaped bands arranged on the two sides of the guide rod 30 in a staggered mode and the intercepting function of the guide rod 30 can divide the blown wind direction into various directions, so that the wind force blown to the blade 20 is greatly reduced, and the destructive force generated by the vortex-induced vibration effect formed by the blade 20 is reduced to the minimum.
It should be noted that the cross-sectional structure of each of the two or more strips may be the same, so as to facilitate design and manufacture. The cross section structures of the strip-shaped belts can be different, the turbulent flow effect is better, but the design and the manufacture are relatively complex, and the cross section structures can be determined according to specific application occasions such as the size of airflow.
In addition, the flow perturbation device 10 can be made of plastic, rubber, metal material, or composite material synthesized by multiple materials. The spoiler 10 and the blade 20 may be integrally formed or may be separately formed, for example, when the spoiler 10 is made of a metal material, the spoiler 10 may be welded to the outer surface a of the blade 20 after the blade 20 is manufactured, so as to adaptively adjust the structure and layout of the spoiler 10 according to different wind conditions.
Fig. 14 is a partial structural schematic diagram of a vertical axis wind turbine generator set according to an embodiment of the invention. Referring to fig. 14, the embodiment of the present invention further provides a vertical axis wind turbine generator set, which includes a generator 200 and a plurality of wind turbines 100 as described above.
The central axis of the generator 200 is perpendicular to the horizontal plane, and a plurality of pairs of mounting lugs 210 are arranged on the outer periphery of the rotor of the generator 200 at intervals. The wind turbine 100 is rotatably connected between each pair of mounting tabs 210 by guide rods 30.
When the vertical axis wind generating set is in a working state, each wind turbine 100 rotates by a preset angle through the guide rod 30 according to the wind direction, so that the wind energy is accumulated on the inner surface b of the blade 20 to push the generator to rotate for generating electricity, and the turbulence device 10 on the outer surface a disperses the downwind wind, thereby reducing the possibility of the blade 20 of generating a vortex-induced vibration effect and improving the wind energy utilization rate and the generating efficiency.
When the vertical axis wind turbine generator set is initially hoisted, subjected to fault maintenance or subjected to severe weather such as typhoon, the generator 200 is in a non-working state, each wind turbine 100 reversely rotates through the guide rod 30, the inner surface b of the blade 20 faces the generator 200, and wind force received by the wind turbine 100 is reduced to the minimum through the turbulence device 10 on the outer surface a, so that a protection wall is formed on the outer peripheral side of the generator 200, and the reliability of the generator 200 is improved.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. A wind turbine (100) for a generator of a vertical axis wind turbine, comprising:
a blade (20) being an arcuate laminar structure, the blade (20) having opposed outer (a) and inner (b) surfaces;
a flow perturbation device (10), wherein the flow perturbation device (10) extends spirally on the outer surface (a) along the axial direction of the blade (20); and
the guide rod (30) penetrates through the blade (20) along the axial direction of the blade (20), and the blade (20) can be rotatably arranged through the guide rod (30).
2. The wind turbine (100) according to claim 1, wherein the cross section of the flow perturbation device (10) comprises a first side (1), a second side (2) and a third side (3) which are connected with each other two by two, the flow perturbation device (10) is connected to the outer surface (a) of the blade (20) through the third side (3), and the included angle of the first side (1) and the third side (3) and the included angle of the second side (2) and the third side (3) are acute angles.
3. Wind turbine (100) according to claim 2, wherein said first side (1) is smoothly transitionally connected to said second side (2).
4. A wind turbine (100) according to claim 1, wherein the cross-section of the flow perturbation device (10) comprises a first side (1), a second side (2), a third side (3) and a fourth side (4) connected to each other, the flow perturbation device (10) is connected to the outer surface (a) of the blade (20) through the third side (3), the fourth side (4) is arranged in parallel to the third side (3), and the length dimension of the fourth side (4) is smaller than the length dimension of the third side (3).
5. Wind turbine (100) according to claim 2 or 4, wherein at least one of said first side (1) and said second side (2) is a straight line or a concave curve.
6. The wind turbine (100) according to claim 1, wherein said guide rods (30) are distributed continuously with said outer surface (a) of said blade (20) throughout a portion of said blade (20);
the flow disturbing device (10) comprises a strip-shaped belt or more than two strip-shaped belts, and the strip-shaped belts are arranged on the outer surface (a) of the blade (20) at preset angles or in parallel.
7. The wind turbine (100) according to claim 1, wherein the portion of the guide rod (30) extending through the blade (20) divides the blade (20) into a first blade (21) and a second blade (22);
the flow disturbing device (10) comprises more than two strip-shaped bands, the outer surfaces (a) of the first blades (21) and the second blades (22) are spirally extended to form at least one strip-shaped band, and the two sides of the guide rod (13) are arranged in a staggered mode or in an aligned mode.
8. Wind turbine (100) according to claim 7, wherein said two or more strip-shaped bands are arranged at a predetermined angle or in parallel on said outer surface (a) of said first blade (21) and said second blade (22), respectively.
9. A vertical axis wind turbine generator set, comprising:
the central shaft of the generator (200) is vertical to the horizontal plane, and a plurality of pairs of mounting lugs (210) are arranged on the outer periphery of the rotor of the generator (200) at intervals;
a wind turbine (100) according to any of claims 1 to 8, said wind turbine (100) being rotatably connected between each pair of said mounting tabs (210) by said guide rods (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856582.1A CN109185051B (en) | 2018-07-31 | 2018-07-31 | Wind turbine and vertical axis wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856582.1A CN109185051B (en) | 2018-07-31 | 2018-07-31 | Wind turbine and vertical axis wind generating set |
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| US4706910A (en) * | 1984-12-27 | 1987-11-17 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Combined riblet and lebu drag reduction system |
| WO2007064155A1 (en) * | 2005-11-30 | 2007-06-07 | Geumpoong Energy | Aerogenerator |
| CN200978775Y (en) * | 2006-12-11 | 2007-11-21 | 富田电机股份有限公司 | Generator fan |
| CN101451499A (en) * | 2007-11-28 | 2009-06-10 | 蔡心一 | Constant directional four-quadrant full lift force vertical axis wind motor |
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| KR20060126784A (en) * | 2004-01-21 | 2006-12-08 | 하비스트 윈드 에너지 코포레이션 | Methods and devices for utilizing flowing power |
| US8573541B2 (en) * | 2010-09-13 | 2013-11-05 | John Sullivan | Wavy airfoil |
| US10400748B2 (en) * | 2016-12-19 | 2019-09-03 | Roberto S. Sagel | Wind turbine with folding blades |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4706910A (en) * | 1984-12-27 | 1987-11-17 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Combined riblet and lebu drag reduction system |
| WO2007064155A1 (en) * | 2005-11-30 | 2007-06-07 | Geumpoong Energy | Aerogenerator |
| CN200978775Y (en) * | 2006-12-11 | 2007-11-21 | 富田电机股份有限公司 | Generator fan |
| CN101451499A (en) * | 2007-11-28 | 2009-06-10 | 蔡心一 | Constant directional four-quadrant full lift force vertical axis wind motor |
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