CN109488522B - Lift-drag composite vertical axis wind turbine - Google Patents
Lift-drag composite vertical axis wind turbine Download PDFInfo
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- CN109488522B CN109488522B CN201811627746.XA CN201811627746A CN109488522B CN 109488522 B CN109488522 B CN 109488522B CN 201811627746 A CN201811627746 A CN 201811627746A CN 109488522 B CN109488522 B CN 109488522B
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- 239000002131 composite material Substances 0.000 title description 10
- 230000008859 change Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Classifications
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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
- F03D3/02—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having a plurality of rotors
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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
- F03D15/00—Transmission of mechanical power
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
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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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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a windmill structure of a vertical axis wind driven generator, which comprises a central fixed shaft, a rotary shaft sleeve, a rotary frame, a fixed shaft guiding rudder, fan blades, a speed increasing gear and the like. The rotary shaft sleeve and the rotary frame are sleeved on the central fixed shaft and rotate around the central fixed shaft. The fan blade is arranged on the fan blade frame arm and can rotate around the fan blade rotating shaft while revolving along with the rotating frame. The wing shape is in a wing shape, and the plane convex of the wing shape can be changed along with the change of the rotation angle. The fan blade positioned on the right side of the fixed shaft mainly works with resistance, and the fan blade positioned on the left side of the fixed shaft mainly works with lifting force. The windmill integrates the advantages of the lift type wind turbine and the resistance type wind turbine, so that the wind turbine is more efficient. Because the windmill has simple structure and small volume and weight, and large-scale equipment such as a generator and the like can be installed on the ground, the cost of transportation and installation is reduced, and the windmill is convenient to maintain and maintain.
Description
Technical Field
The invention relates to a lift-drag composite vertical axis wind turbine, and belongs to the technical field of new energy.
Background
The existing wind driven generator is divided into a horizontal axis wind driven generator and a vertical axis wind driven generator by mainstream technology. The rotating plane of the wind wheel of the horizontal-axis wind driven generator is vertical to the airflow direction, the length of the blades of the MW-level horizontal-axis wind driven generator reaches more than 50 meters, the manufacturing process of the curved surfaces of the blades is complex, the processing is difficult, and the production cost is high. The blade is very long, and the transportation and the installation are difficult. The tower is hundreds of meters in height, which not only is costly to manufacture, but also is more challenging to transport and install. The weight of the machine cabin (comprising a generator, a speed changer, a control system and the like) reaches tens of tons, the object with the weight is sent to the hundred meters high, the machine cabin is also connected with the blades and can horizontally rotate by 360 degrees, the difficulty is conceivable-! Its stability and maintainability are even more alarming.
Vertical axis wind turbines are classified as drag type and lift type. Compared with the horizontal axis wind driven generator, the wind driven generator has the characteristics of simple structure of the blade and the tower, common processing technology and low manufacturing cost. And the volume of the accessory single piece is relatively small, so that the accessory single piece is convenient to transport and install. The generator and the speed changer are positioned on the ground, so that the installation and the maintenance are convenient.
In summary, it is apparent that vertical axis wind turbines offer advantages over horizontal axis wind turbines. However, the existing finished products are mainly horizontal axis fans. The reason is that the vertical axis wind turbine is not paid attention for a long time, and the research and development investment is low. Vertical axis wind turbines are considered to have low wind energy utilization. Is not suitable for high-power wind driven generators. In the prior art, the wind energy utilization rate of the horizontal-axis wind driven generator is slightly higher than that of the vertical-axis wind driven generator. Taking the parameters of the horizontal axis series and the vertical axis series of a certain manufacturer in China as an example: the horizontal axis series power is 300W-100KW, and the wind energy utilization rate is 20% -41%. The vertical axis series power is 100W-20KW, and the wind energy utilization rate is 10% -31%. With the continuous investment of the development of the vertical axis wind turbine technology, the vertical axis wind turbine technology has been rapidly developed in recent years.
Disclosure of Invention
The lift-drag composite type vertical axis wind turbine provided by the invention well solves the problem of low wind energy utilization rate of the vertical axis wind turbine while retaining the original advantages of the vertical axis wind turbine. Research results of researchers in the industry prove that the reason for the low wind energy utilization rate of the vertical axis wind turbine is as follows: when the blades rotate about the vertical axis, the airflow on the left side of the vertical axis will do negative work if the airflow on the right side of the vertical axis does positive work. While the horizontal axis wind turbine does positive work for all air flows. If the windward area of the air flow doing positive work on the right side and the windward area of the blades can be effectively enlarged, and meanwhile, the windward area of the air flow doing negative work on the left side and the windward area of the blades can be reduced as much as possible. Even the left air flow does positive work, the wind energy utilization rate of the vertical axis wind turbine can be obviously increased.
The technical scheme of the invention is realized as follows:
A lift-drag composite vertical axis wind turbine comprises a central fixed shaft, a steel cable fixed disc sleeved on the central fixed shaft, a wind rudder arranged at the top of the central fixed shaft, a rotary shaft sleeve sleeved outside the central fixed shaft, a rotary frame sleeved outside the rotary shaft sleeve, a1 st fan blade arranged on a rotary frame arm, a2 nd fan blade arranged below the rotary frame arm, and a speed increasing gear sleeved outside the rotary shaft sleeve.
Preferably, the central fixed shaft is a cylindrical long shaft, and the diameter of the left side of the outer circle of the central fixed shaft is smaller than the diameter of the right side of the outer circle of the central fixed shaft. One end of the end face of the cylindrical long shaft is provided with a hexagonal bulge, and the other end of the end face of the cylindrical long shaft is provided with a hexagonal recess. Multiple identical cylindrical long axes can be used
Preferably, the central fixed shaft is a cylindrical long shaft, and the diameter of the left side of the outer circle of the central fixed shaft is smaller than the diameter of the right side of the outer circle of the central fixed shaft. One end of the end face of the cylindrical long shaft is provided with a hexagonal bulge, and the other end of the end face of the cylindrical long shaft is provided with a hexagonal recess. A plurality of identical cylindrical long shafts may be joined together by inserting a hexagonal protrusion into a hexagonal recess. The lengthened central fixed shaft formed by connection is vertically fixed on the ground.
The preferable scheme is that the wind rudder is a flat plate, the plate surface is vertical to the ground and is arranged at the top of the central fixed shaft, and the center line of the plate surface is parallel to semicircular dividing lines with different diameters on the left and right sides of the central fixed shaft.
The preferable scheme is that the steel cable fixing disc is a disc with a round hole in the center, the diameter of the disc is equal to the rotating diameter of the fan blade, and the round hole is sleeved at the top end of the central fixing shaft and can rotate around the central fixing shaft; the outer edge of the disc is 120 degrees apart, and is fixed with three steel ropes, and the other end of each steel rope is fixed on the ground, so that the function of stabilizing the central fixed shaft is achieved.
Preferably, the rotary shaft sleeve is a tubular body with a hexagonal outer part and a circular inner part. The device is sleeved outside the central fixed shaft and can rotate around the central fixed shaft for transmitting power.
Preferably, the rotary frame is a tubular body with a hexagonal hole in the center, and three frame arms radially and outwards extend from the center of the tubular body and are 120 degrees apart. The top ends of the three frame arms are respectively provided with an upward and downward extending shaft, and an eccentric cam is fixedly arranged on the shaft.
The preferred scheme is, 1 st fan blade and 2 nd fan blade include: the rotary supporting wheels are arranged on the left and right blade supporting shafts. The blade bounding wall is the annular body that has the sheet metal roll up of elastic metal material, its cover is located two blade back shaft outsides, be in the centre of 2 upper and lower crossbeams from top to bottom, when revolving frame rotated, the eccentric cam on the frame arm can withhold one side of blade bounding wall, along with revolving frame's angle change, the position and the dynamics of eccentric cam top blade bounding wall can change, then the outside profile of blade bounding wall can produce plano-convex degree and direction's change, and the eccentric cam withstands the power of blade bounding wall, still produce a moment that makes the blade rotatory simultaneously, this moment of rotation is also beneficial.
The preferred scheme is that the speed increasing gear is a gear with a hexagonal hole in the center, the speed increasing gear is sleeved on the lower part of the rotating shaft sleeve, which is close to the ground, and the gear is meshed with a gear on the generator speed changing gear box when rotating along with the rotating shaft sleeve, so as to drive the generator to generate electricity.
The beneficial effects of the invention are as follows:
The lift-drag composite vertical axis wind turbine has the advantages of simple structure, easy manufacture and cost saving; the component is small in size and convenient to transport; the on-site assembly is flexible in mounting mode, heavy equipment is mounted on the ground, large hoisting equipment is not needed, and daily maintenance and maintenance are convenient; due to the adoption of the technology of variable blade angles and wing shapes, the wind energy utilization rate is expected to be close to 70%. Such wind energy utilization is not only far higher than that of the existing vertical axis wind turbine, but also exceeds the wind energy utilization level of the existing horizontal axis wind turbine. The lift-drag composite vertical axis wind turbine can save manufacturing and installation costs by at least 50% compared with the horizontal axis wind turbine with the same power.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a wind turbine structure;
FIG. 2 is a schematic diagram of the overall structure of a vertical axis wind turbine;
In the figure: 10. a central fixed shaft; 11. the fixed shaft guides the rudder; 12. a wire rope fixing plate; 13. a wire rope; 14. a speed increasing gear; 20. rotating the shaft sleeve; 21. a rotating frame; 22. a frame arm; 23. an eccentric cam; 30. a1 st fan blade; 31. a2 nd fan blade; 32. A blade rotation shaft; 33. blade coaming; 34. a blade support shaft; 35. a blade upper cross beam; 36. a blade lower cross beam; 37. rotates against the wheel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown, a lift-drag composite vertical axis wind turbine, comprising: the vane 30, the vane 31, the center fixed shaft 10, the rotating shaft sleeve 20, the rotating frame 21, the speed increasing gear 14, the wire rope fixing disc 12, the wire rope 13 and the fixed shaft steering rudder 11.
The resistance type vertical axis wind turbine has low airflow utilization rate because the positive work is performed by the downwind side blades and the negative work is performed by the upwind side blades. According to the principle that the aircraft wing generates lift force, the lift force generated by the high-speed running of the fan blade in the air is utilized to do work, and the downwind side and the upwind side do positive work. However, most lift-type wind turbines have wing shapes that are not the wing shape of the aircraft, but rather are left-right symmetrical, streamlined wing shapes. This is because, during rotation, the fan blade of the fixed aircraft wing shape generates a positive lift moment if it is convex left and right in the fourth quadrant, and a negative lift moment if it is convex left and right in the first quadrant. The second quadrant is left convex and right flat, the generated lifting force moment is positive, the third quadrant is left convex and right flat, and the generated lifting force moment is negative. The positive and negative are offset, so that an asymmetric aircraft wing shape does not give positive torque here. The aerofoil-shaped symmetrical wing shape is adopted, so that the resistance can be effectively reduced, and meanwhile, the lift force can be generated by utilizing the attack angle of the wing shape. The lift-drag composite vertical axis wind turbine provided by the invention has the advantages that the wing shape is variable, when in a working state, positive rotation moment is generated in all four quadrants of the attack angle of the blade, and the lift moment generated by the plane-convex change of the wing shape is also positive rotation moment, so that the efficiency is higher.
As shown in figure 2, the lift-drag composite vertical axis wind turbine has the following working processes: the blades 30 and 31 on the rotating frame 21 are rotated counterclockwise by the air flow, and the blades 30 and 31 start to be operated from a vertical state when the blades 30 and 31 are operated from 0 o 'clock to 9 o' clock on the left side of the central fixed shaft, and at this time, the upper edge rotation linear velocity of the blades 30 and 31 is greater than the lower edge rotation linear velocity, and the blades 30 and 31 generate a clockwise rotation moment. The direction of the air flow is vertically upward, and after the blades 30 and 31 are rotated clockwise by a certain angle, the front edges of the blades 30 and 31 are inclined leftward, the air flow will generate a counterclockwise rotation moment to the blades 30 and 31. After positive torque is balanced, the blades 30 and 31 are kept parallel to the airflow direction, at this time, the vertical airflow has no rotation torque to the blades 30 and 31, and the thrust of the blades 30 and 31 to the air generated by rotation is equal to the thrust of the blades 30 and 31 to the right, which is equal to the thrust of the blades 30 and 31 to the right, because the blades 30 and 31 are vertical to the horizontal direction and the horizontal running speed to the left is the same up and down, and the blades 30 and 31 are symmetrical up and down. The blades 30 and 31 are kept parallel to the direction of the air flow in a steady state. Because the apex of the eccentric cam 23 is now offset from the center of the blades 30 and 31, it will generate a thrust force against the left side coaming 33 of the blades 30 and 31 that will generate a clockwise rotational moment that will cause the leading edges of the blades 30 and 31 to tilt slightly to the left from the vertical. The apex of the eccentric cam 23 abuts the left side of the shroud 33 such that the left side of the shroud 33 is convex and the right side is horizontal, and the direction of airflow acts on this slightly left-leaning angle of attack, and the left convex right flat wing shape of the blades 30 and 31, in full compliance with the standard aircraft wing lift generating principle. The generated lift force is leftward, and the torque is counterclockwise positive torque.
When the blades run at 9 o 'clock to 6 o' clock on the left side of the central fixed shaft, the blades 30 and 31 start to run from the vertical state, at this time, the top point of the eccentric cam 23 starts to deviate to the right side of the blades 30 and 31, and as the rotation angle increases, the top point of the eccentric cam 23 gradually increases the jacking force to the right side of the coaming 33, and the contour of the coaming 33 becomes flat left and convex right. The blades 30 and 31 will maintain the blade leading edge running at an angle slightly to the right from vertical, in the same principle as the 0-to-9-point interval running, the 9-to-6-point interval.
Running to the 6 o 'clock position, since the diameter of the right outer circle of the central fixed shaft 10 is greater than the diameter of the left outer circle, the rotating abutment wheels 37 of the blades 30 and 31 will abut against the right outer circle of the central fixed shaft 10, after which, when the blades 30 and 31 are rotated, since the inner edge rotation linear velocity of the blades 30 and 31 is smaller than the outer edge rotation linear velocity, the thrust generated by the air flow on the inner sides of the blades 30 and 31 is greater than the thrust generated on the outer sides, the blades generate a clockwise rotation moment, and the clockwise rotation is hindered by the central fixed shaft 10 against the rotating abutment wheels 37, so the blade surfaces of the blades 30 and 31 will remain parallel to the rotating frame arm 22 until running to the 0 o' clock position, during which the blades 30 and 31 are flattened right and left at the 6 o 'clock to the 3 o' clock position, the lift moment is a counterclockwise positive moment, the blades 30 and 31 are flattened right and left at the 3 o 'clock to the 0 o' clock position, and the lift moment is also counterclockwise positive moment.
Since the rotation speed of the rotating frame 21 is low during the power generation operation, when the air flow is vertically blown to the blades, the right resistance type blades will block the air flow, and the direction of the right blades will force the air flow to the left, so that the air flow speed from 9 o 'clock to 12 o' clock on the left will increase and the air flow direction will be deflected to the left due to the increase of the air flow rate flowing per unit time. This air flow, which is deflected to the left and at a greater velocity, will produce a leftward thrust on the blades travelling there, increasing the counterclockwise forward torque.
During the whole operation, the impact of the airflow on the blades 30 and 31, the wing shape and attack angle of the blades 30 and 31 all conform to the theory of wing lift force, and the torque generated by the lift force is all positive torque. The forward lift torque is generated not only on the left side of the center fixed shaft 10 but also on the right side of the center fixed shaft 10. These positive lift torques, plus the resistance torque on the right side of the central fixed shaft 10, together push the rotating wheel to rotate anticlockwise, driving the generator to generate electricity. Therefore, the vertical shaft rotating wheel is actually a lifting force and resistance compound type vertical shaft wind driven generator. The operation of the wind turbine on the right side of the central fixed shaft 10 does positive work except for resistance, the operation of the wind turbine on the left side of the central fixed shaft 10 does positive work except for small part of resistance, and the operation of the wind turbine on the left side of the central fixed shaft 10 does positive work even more than small part of resistance. Although no accurate calculation and experimental test are performed, the wind energy utilization rate of the vertical axis wind turbine is estimated to be far more than 50% initially, and the conservation estimation is not lower than 70%.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (1)
1. The utility model provides a rise and hinder compound type vertical axis aerogenerator, includes center fixed axle, overlaps and locates the cable wire fixed disk on the center fixed axle, installs the rudder at center fixed axle top, overlaps and locates the outer swivel housing of center fixed axle, overlaps and locate the outer swivel housing of swivel housing, installs the 1 st fan blade above the swivel housing arm and installs the 2 nd fan blade below the swivel housing arm to and the outer speed increasing gear of swivel housing is located to the cover, its characterized in that: the center fixed shaft is a cylindrical long shaft, and the diameter of the left side of the outer circle of the center fixed shaft is smaller than the diameter of the right side of the outer circle of the center fixed shaft; the plurality of identical cylindrical long shafts can be inserted into the hexagonal concave to be connected together, and the lengthened central fixed shaft formed by connection is vertically fixed on a base on the ground, and the base can rotate along with the change of wind direction; the wind rudder is a flat plate, the plate surface is vertical to the ground and is arranged at the top of the central fixed shaft, the center line of the plate surface is parallel to semicircular dividing lines with different diameters on the left and right of the central fixed shaft, and the semicircular dividing lines drive the central fixed shaft to rotate along with the change of wind direction; the steel cable fixing disc is a disc with a round hole in the center, the diameter of the disc is equal to the rotating diameter of the fan blade, the round hole is sleeved at the top end of the central fixing shaft and can rotate around the central fixing shaft; the outer edge of the disc is 120 degrees apart, three steel ropes are fixed, and the other ends of the steel ropes are fixed on the ground, so that the function of stabilizing the central fixed shaft is achieved; the rotary shaft sleeve is a tubular body with a hexagonal outer part and a round inner part, is sleeved outside the central fixed shaft and can rotate around the central fixed shaft for transmitting power; the rotary frame is a tubular body with a hexagonal hole in the center, and three frame arms radially extend outwards from the center of the tubular body and are separated by 120 degrees; the top ends of the three frame arms are respectively provided with an upward and downward extending shaft, and the shafts are fixedly provided with eccentric cams; the rotating frame is positioned at the extending angle of the frame arm, two arc-shaped notches are respectively arranged at the upper and lower parts, and the rotating leaning wheel on the fan blade can lean against the central fixed shaft through the notches; the speed increasing gear is a gear with a hexagonal hole in the center, is sleeved at the lower part of the rotating shaft sleeve close to the ground, is meshed with a gear on the generator speed changing gear box while rotating along with the rotating shaft sleeve, drives the generator to generate electricity,
The 1 st fan blade is arranged on the upper surface of the frame arm, and the 2 nd fan blade is arranged below the frame arm; the 1 st fan blade and the 2 nd fan blade are composed of an upper cross beam, a lower cross beam, left and right blade supporting shafts and blade coamings; the center holes of the upper and lower cross beams are sleeved on the blade rotating shafts on the frame arms, and the two ends of the upper and lower cross beams are provided with blade supporting shafts; the blade coaming is a ring-shaped body rolled by a sheet metal with elasticity, is sleeved outside two blade supporting shafts and is positioned between an upper beam and a lower beam, when the rotating frame rotates, an eccentric cam on a frame arm can prop against one side of the blade coaming, along with the angle change of the rotating frame, the position and the force of the eccentric cam propping against the blade coaming can change, so that the outer contour of the blade coaming can change in plano-convex degree and direction,
The left blade support shaft and the right blade support shaft are provided with rotary abutting wheels, the rotary abutting wheels can abut against the central fixed shaft through a notch of the rotary frame, the left side of the central fixed shaft is small in radius, the rotary abutting wheels are not contacted with the central fixed shaft, the right side of the central fixed shaft is large in radius, the rotary abutting wheels abut against the central fixed shaft, the 1 st fan blade and the 2 nd fan blade are in a free state on the left side of the central fixed shaft, and the right side of the central fixed shaft is limited by abutting the rotary abutting wheels against the central fixed shaft, so that the 1 st fan blade and the 2 nd fan blade are parallel to the frame arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627746.XA CN109488522B (en) | 2018-12-29 | 2018-12-29 | Lift-drag composite vertical axis wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811627746.XA CN109488522B (en) | 2018-12-29 | 2018-12-29 | Lift-drag composite vertical axis wind turbine |
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| CN109488522A CN109488522A (en) | 2019-03-19 |
| CN109488522B true CN109488522B (en) | 2024-06-14 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319658A (en) * | 2007-06-06 | 2008-12-10 | 七星全球有限公司 | Pneumatic windmill for automatically tracking wind direction |
| CN104564530A (en) * | 2015-01-13 | 2015-04-29 | 哈尔滨工程大学 | Lift and drag combined vertical axis wind turbine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046373A (en) * | 1989-04-09 | 1990-10-24 | 龚式群 | Low-resistance windmill with movable blades |
| CN1074978A (en) * | 1992-01-31 | 1993-08-04 | 贡晓婷 | Moving cam type windmill with constant output |
| GB2447913A (en) * | 2007-03-27 | 2008-10-01 | Conrad Cooper | Lift and drag driven wind turbine |
| KR100915676B1 (en) * | 2007-07-16 | 2009-09-09 | (주)에스지이에너지 | Wind power generator |
| CN201159137Y (en) * | 2008-02-05 | 2008-12-03 | 崔美娟 | Elevating force and resistance mixed vertical axis aerogenerator |
| CN201679623U (en) * | 2010-04-08 | 2010-12-22 | 南京永乐光电科技有限公司 | Vertical axis wind turbine wing blade and wing vertical axis wind turbine |
| KR101062580B1 (en) * | 2011-05-23 | 2011-09-06 | 박일성 | Vertical aerogenerator with rotating wings of which degrees of opening and closing are self controlled |
-
2018
- 2018-12-29 CN CN201811627746.XA patent/CN109488522B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319658A (en) * | 2007-06-06 | 2008-12-10 | 七星全球有限公司 | Pneumatic windmill for automatically tracking wind direction |
| CN104564530A (en) * | 2015-01-13 | 2015-04-29 | 哈尔滨工程大学 | Lift and drag combined vertical axis wind turbine |
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