CN115539293A - Magnus type wind wheel and wind turbine - Google Patents
Magnus type wind wheel and wind turbine Download PDFInfo
- Publication number
- CN115539293A CN115539293A CN202211151317.6A CN202211151317A CN115539293A CN 115539293 A CN115539293 A CN 115539293A CN 202211151317 A CN202211151317 A CN 202211151317A CN 115539293 A CN115539293 A CN 115539293A
- Authority
- CN
- China
- Prior art keywords
- eccentric
- wind wheel
- airflow
- magnus
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000000903 blocking effect Effects 0.000 claims description 32
- 210000003781 tooth socket Anatomy 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
- F03D3/007—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical using the Magnus effect
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a Magnus type wind wheel and a wind turbine, belonging to the technical field of wind power driving equipment. The positions of the cylindrical rotor and the airflow obstructing component and the windward area of the airflow obstructing component are changed through the eccentric mechanism, the airflow obstructing component can enable the wind flow on the two sides of the airflow obstructing component to generate difference, and the aerodynamic force of the cylindrical rotor and the airflow obstructing component assembly is enhanced; the airflow obstructing component can reduce the Magnus force of the cylindrical rotor at the leeward side, so that the negative effect of the Magnus force on the torsion moment of the wind wheel is reduced, the power of the wind wheel is increased, and the rotation of the wind wheel is realized. The invention can realize the smooth rotation of the rotor of the vertical axis wind turbine, thereby improving the operation efficiency of the wind turbine.
Description
Technical Field
The invention belongs to the technical field of wind power driving equipment, and particularly relates to a Magnus type wind wheel and a wind turbine.
Background
A rotating cylinder in a fluid is subjected to a force perpendicular to the axis of rotation and the direction of flow, a phenomenon known as the magnus effect. In a magnus-type vertical-axis wind power installation, the rotational torque of the vertical-axis wind rotor is obtained by means of magnus forces. However, the direction of the magnus force is always perpendicular to the rotation direction of the cylinder and the direction of the incoming wind, and the magnitude of the magnus force is determined by the wind speed and the rotating speed. However, in the vertical axis wind turbine, when the rotary cylinder rotates in one direction, the magnus forces generated in the wind are in the same direction on the upwind side and the downwind side, and at this time, the rotational torques of the wind wheels of the vertical axis wind turbine are offset with each other, so that the rotary cylinder cannot be directly used as the rotor of the vertical axis wind turbine.
At present, one of the methods for solving the above problems is to change the rotation direction of the cylinder on the windward side and the leeward side respectively, but when the method is adopted, the rotation direction of the cylinder needs to be frequently switched, which causes loss to the device itself and the driving motor, greatly reduces the service life, and the cylinder needs a certain time for changing the direction after deceleration and accelerating at a high rotation speed, which may cause the efficiency of the device to be reduced because the rotation direction of the cylinder cannot be switched to follow the rotation of the wind wheel.
In addition, there is another solution: the method comprises the following steps that a group of rotating cylinders with opposite rotating directions are used and are arranged along the inner side and the outer side of a wind wheel, the Magnus of a downwind rotor is reduced through the shielding effect of the Magnus rotor in the upwind direction on the downwind direction, when the group of rotating cylinders is positioned on the upwind side, the rotor on the outer side is positioned in the upwind direction, the rotor on the inner side is positioned in the downwind direction, and the wind wheel generates torque along the Magnus force direction of the rotor on the outer side; when the rotating cylinder group is positioned at the leeward side, the outer rotor is positioned at the leeward direction, and the inner rotor is positioned at the upwind direction. Therefore, the wind wheels on the upwind side and the downwind side can generate the rotating torque in the same direction. The method can effectively solve the problem of frequently switching the rotation of the cylinders, but the cost is also correspondingly increased because two rotating cylinders need to be driven at the same time.
Disclosure of Invention
The invention aims to provide a Magnus type wind wheel and a wind turbine, and aims to solve the technical problem that the wind wheel consisting of a plurality of rotating cylinders in the prior art cannot be directly used on a vertical shaft type wind turbine due to negative torque generated by the Magnus effect, so that the working efficiency of the wind turbine is influenced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a Magnus type wind wheel comprises a wind wheel frame, three cylindrical rotors and three airflow blocking members, wherein the three cylindrical rotors are arranged at the edge of the wind wheel frame in a triangular shape in parallel, the cylindrical rotors are rotationally connected with the wind wheel frame and driven by a driving motor, the three airflow blocking members are correspondingly arranged on the same-direction sides of the three cylindrical rotors, the fixed ends of the three airflow blocking members are rotationally matched with the wind wheel frame, the movable ends of the airflow blocking members are connected with an eccentric mechanism, and the eccentric mechanism is used for driving the airflow blocking members to rotate to control the Magnus force applied to the cylindrical rotors; the wind wheel frame is in running fit with the main shaft, and an eccentric base of the eccentric mechanism is arranged at the tail end of the main shaft.
Preferably, the side surface of the airflow obstructing member is rectangular flat, the middle part of the airflow obstructing member is in running fit with the wind wheel frame, tooth sockets are arranged on both side surfaces of the airflow obstructing member, the opening of the tooth socket on the downwind side surface of the airflow obstructing member is inclined to one side of the movable end of the airflow obstructing member, and the opening of the tooth socket on the upwind side surface of the airflow obstructing member is inclined to the fixed end of the airflow obstructing member; the two side faces of the airflow obstructing component are gradually closed from the fixed end to one side of the movable end.
Preferably, the middle part of the airflow obstructing component is provided with a through hole which is in running fit with a fixed rod, and two ends of the fixed rod are fixedly connected with the wind wheel frame; the movable end of the airflow obstructing component is provided with a through hole which is matched with the movable rod in a rotating way, the upper end of the movable rod is connected with the tail end of an eccentric arm of the eccentric mechanism, and the eccentric mechanism is arranged at the top of the wind wheel frame and is fixedly connected with the main shaft.
Preferably, the wind wheel frame comprises a base, a sleeve and a top plate, the sleeve is sleeved outside the main shaft, the base and the top plate are respectively fixed at the lower end and the upper end of the sleeve, three supporting seats are radially and uniformly distributed around a middle disc of the base, and the three fixing rods and the lower end of the rotating shaft of the cylindrical rotor are arranged on the supporting seats; the three fixing rods and the upper end of the rotation shaft of the cylindrical rotor are arranged on the top plate; and the centers of the middle discs of the base and the top plate are provided with through holes matched with the main shaft.
Preferably, the outer wall of the sleeve is provided with an upper group of diagonal braces and a lower group of diagonal braces, and the two groups of diagonal braces are respectively connected with the top plate and the base; each group is three diagonal braces, one end of each diagonal brace is connected with the sleeve, the other end of each diagonal brace is connected with the top plate or the base, and the diagonal braces are correspondingly arranged on the inner side of the cylindrical rotor.
Preferably, the driving motor is arranged at the lower end of the cylindrical rotor, a conductive slip ring electrically connected with the power supply is arranged at the bottom of the sleeve, and the driving motor is electrically connected with the conductive slip ring and used for driving the cylindrical rotor to rotate.
Preferably, the eccentric mechanism comprises an eccentric base and three eccentric arms, the eccentric base is sleeved on the main shaft and fixed through a fixing bolt, an eccentric shaft is arranged on the eccentric base, and the eccentric shaft is arranged on one side of the main shaft; one end of each eccentric arm is in running fit with the eccentric shaft, the other end of each eccentric arm is in running fit with the movable end of the airflow obstructing component, and the three eccentric arms are uniformly distributed around the eccentric shaft in the radial direction. The end parts of the three eccentric arms are provided with connecting holes matched with the eccentric shaft, the connecting holes are sequentially sleeved on the eccentric shaft from top to bottom, and the top of the eccentric shaft is provided with a limiting sleeve for limiting the eccentric arms.
Preferably, the length of the eccentric arm is M, the horizontal distance between the fixed rod and the movable rod is L, the horizontal distance between the main shaft and the eccentric shaft is D, the horizontal distance between the fixed rod and the main shaft is R, and the operation of the eccentric mechanism satisfies the following formula: m + L-D is more than R, and M-L + D is less than R.
Preferably, the eccentric arm is of a telescopic structure.
The invention also provides a wind turbine which comprises the Magnus type wind wheel and a rack, wherein the wind wheel frame is connected with the rack through a transmission mechanism, and the Magnus type wind wheel is used for providing a power source.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the invention has the advantages that the airflow blocking component is arranged on the inner side of the cylindrical rotor, the relative position of the cylindrical rotor and the airflow blocking component and the windward area of the airflow blocking component are changed by the eccentric mechanism, and the magnus force borne by the cylindrical rotor is controlled by the airflow blocking component; when the cylindrical rotor at the upwind side pushes the wind wheel to rotate, the Magnus force is basically not influenced, and when the cylindrical rotor at the downwind side inhibits the wind wheel to rotate, the Magnus force is reduced, so that the negative effect of the Magnus force on the torsional moment of the wind wheel is reduced, and the rotation of the wind wheel is realized; in addition, the sawtooth structure on the surface of the airflow obstructing component enables wind to flow along two sides of the airflow obstructing component to generate difference, aerodynamic force of the cylindrical rotor and the airflow obstructing component combination is further enhanced, and power of the wind wheel is increased. The invention can realize the smooth rotation of the rotor of the vertical axis wind turbine, thereby improving the operation efficiency of the wind turbine.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of a Magnus wind turbine according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the structure of a cylindrical and air-flow obstructing member in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing a structure of an air flow obstructing member in example 2 of the present invention;
FIG. 4 is a schematic illustration of the principle of operation of the air flow obstructing member of FIG. 2;
FIG. 5 is a schematic cross-sectional view of the upper end of the eccentric shaft and the main shaft of FIG. 1;
FIG. 6 is a schematic cross-sectional view of the lower end of the spindle of FIG. 1;
FIG. 7 is a schematic view of the eccentric base of FIG. 1;
FIG. 8 is a diagram showing the definition of the concurrent side and the convection side on the cylindrical rotor in the present invention;
FIG. 9 is a diagram illustrating the definition of an angle α between the connecting line of the eccentric shaft and the main shaft and the wind direction of the incoming flow;
FIG. 10 is a schematic view of the effect of the Magnus forces on the air flow obstruction member on the convective side of a cylindrical rotor in accordance with the present invention;
FIG. 11 is a schematic view of the flow impeding member of FIG. 1 being subjected to the influence of Magnus forces on the concurrent flow side of a cylindrical rotor;
FIG. 12 is a top view of the cylindrical rotor and airflow obstruction member of FIG. 1;
FIG. 13 is a schematic view of the construction of an eccentric arm according to another embodiment of the present invention;
FIG. 14 is a schematic force diagram of the cylindrical rotor and the air flow obstructing member at the windward side in the embodiment of the present invention;
FIG. 15 is a schematic force diagram of the cylindrical rotor and the air flow blocking member of the eccentric mechanism in the embodiment of the present invention, when an included angle between incoming air and a plane where the cylindrical rotor and the main shaft are located is 0 °;
FIG. 16 is a force diagram of the cylindrical rotor and air flow obstructing member of FIG. 15 with the impeller rotated 180;
FIG. 17 is a force schematic view of the cylindrical rotor and air flow obstruction member with the impeller of FIG. 16 rotated 135 clockwise;
FIG. 18 is a force schematic view of the cylindrical rotor and air flow obstruction member with the impeller of FIG. 16 rotated 100 clockwise;
FIG. 19 is a schematic force diagram of the cylindrical rotor and the airflow obstructing member with the wind wheel of FIG. 16 rotated 225 clockwise;
FIG. 20 is a schematic force diagram of the cylindrical rotor and the airflow obstructing member with the wind wheel of FIG. 16 rotated 270 clockwise;
FIG. 21 is a force schematic view of the cylindrical rotor and air flow obstruction member with the impeller of FIG. 16 rotated 315 clockwise;
FIG. 22 is a schematic diagram showing the movement traces of the fixed bar and the movable bar during the rotation of the wind wheel, and a schematic diagram showing a triangle formed by the main shaft, the eccentric shaft and the fixed bar when they are collinear with each other, the eccentric arm and the airflow obstructing member;
FIG. 23 is a schematic view of the movement traces of the fixed rod and the movable rod during the rotation of the wind wheel, and a schematic view of a triangle formed by the main shaft, the eccentric shaft and the movable rod when they are collinear with the eccentric arm and the airflow obstructing member;
figure 24 is a schematic view of the zonal division of the upwind, downwind, upwind and upwind sides of the rotor of figure 12;
in the figure: 1-cylindrical rotor, 2-wind wheel frame, 21-base, 22-top plate, 23-ear plate, 24-supporting seat and 25-diagonal brace; 3-airflow obstructing component, 4-tooth space, 5-Magnus force, 6-rotation shaft, 7-fixed rod, 8-movable rod, 9-eccentric arm, 10-eccentric shaft, 11-sleeve, 12-rotor end plate, 13-conductive slip ring, 14-main shaft, 15-fixed bolt hole, 16-shaft hole, 17-thrust bearing, 18-driving motor, 19-eccentric base and 20-telescopic part; 21-tangential force.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the wind wheel of the magnus type wind wheel provided by the invention comprises a wind wheel frame 2, three cylindrical rotors 1 and three airflow blocking members 3, wherein the three cylindrical rotors 1 are arranged at the edge of the wind wheel frame 2 in a triangular shape in parallel and are in running fit with the wind wheel frame 2, the three airflow blocking members 3 are correspondingly arranged at the same-direction sides of the three cylindrical rotors 1, the middle parts of the three airflow blocking members 3 are in running fit with the wind wheel frame 2, the movable ends of the airflow blocking members 3 are connected with an eccentric mechanism, and the eccentric mechanism is used for driving the airflow blocking members 3 to rotate to control the magnus force borne by the cylindrical rotors 1; the middle part of wind wheel frame 2 and main shaft 14 normal running fit, eccentric mechanism sets up in the terminal of main shaft 14, and its eccentric base 19 links firmly with main shaft 14, be equipped with thrust bearing 17 between eccentric mechanism's eccentric base 19 and the wind wheel frame.
During specific manufacturing, the three cylindrical rotors 1 and the airflow obstructing component 3 are arranged on the wind wheel frame 2 in a regular triangle shape, and two ends of the rotor self-transmission shaft 6 in the middle of the cylindrical rotors 1 are in running fit with the wind wheel frame 2. When the cylindrical rotor rotates under the driving of the driving motor, the cylindrical rotor is influenced by the wind coming from the wind, and is subjected to the magnus force as shown in fig. 8. When the wind wheel rotates, the relative position of the airflow blocking component and the cylindrical rotor and the windward area of the airflow blocking component are changed through the eccentric mechanism, the Magnus force borne by the cylindrical rotor is adjusted, and the negative effect of the Magnus force on the leeward side on the twisting moment of the wind wheel is reduced.
As a preferable scheme, as shown in fig. 2, 4 and 12, the side surface of the airflow obstructing member 3 is in a rectangular flat plate shape, the middle part of the airflow obstructing member 3 is in rotating fit with the wind wheel frame, both side surfaces of the airflow obstructing member 3 are provided with tooth sockets 4, the opening of the tooth socket 4 on the downwind side surface of the airflow obstructing member 3 is inclined to the movable end side thereof, and the opening of the tooth socket 4 on the upwind side surface of the airflow obstructing member 3 is inclined to the fixed end thereof; the two side faces of the airflow obstructing component 3 gradually approach and close from the fixed end to one side of the movable end. The airflow obstructing members in fig. 1 are simply drawn and the gullets are not shown. During specific manufacturing, a through hole which is in running fit with the fixed rod 7 is formed in the fixed end of the airflow obstructing component 3, and two ends of the fixed rod 7 are fixedly connected with the wind wheel frame; the active end of airflow obstruction component 3 is equipped with the through-hole with 8 normal running fit of movable rod, the upper end of movable rod 8 passes through bearing normal running fit with eccentric arm 9 end of eccentric mechanism, eccentric mechanism's eccentric base 19 is fixed at the end of main shaft 14 and is linked to each other with the wind wheel frame through thrust ball bearing 17 for reduce the friction of eccentric mechanism and wind wheel frame. The length of the airflow obstructing component is slightly smaller than that of the cylindrical rotor, so that the rotor end plates at two ends of the cylindrical rotor are prevented from interfering the rotation of the cylindrical rotor. The section of the airflow obstruction member in the scheme is of an airfoil structure, and is similar to the form of an airplane flap, and the airflow obstruction member operates by using the flap principle of the airplane. As shown in fig. 10, 11, and 14, when the airflow obstructing member rotates with the wind wheel, the resistance of the magnus force of the cylindrical rotor to the wind wheel can be reduced by using the airflow obstructing member, and the efficiency of the wind wheel is improved. Of course, the airflow blocking member may have the structure shown in fig. 3, and the same effect can be obtained.
In a specific embodiment of the present invention, as shown in fig. 1, 5, and 6, the wind wheel frame includes a base 21, a sleeve 11, and a top plate 22, the sleeve 11 is sleeved outside the main shaft 14, the base 21 and the top plate 22 are respectively fixed to the lower end and the upper end of the sleeve 11, three support seats 24 are radially and uniformly distributed around a middle disc of the base 21, and the three fixing rods 7 and the lower end of the rotation shaft 6 of the cylindrical rotor 1 are both disposed on the support seats 24; three lug plates 23 are radially and uniformly distributed around the middle disc of the top plate 22, and the three fixed rods 7 and the upper end of the rotating shaft 6 of the cylindrical rotor 1 are arranged on the lug plates 23; the centers of the middle disks of the base 21 and the top plate 22 are provided with through holes used for being matched with the main shaft 14. The wind wheel frame adopting the structure can reduce the whole weight of the wind wheel, meets the lightweight design requirement, and is simple and convenient to process and manufacture and low in cost.
Of course, the base and the top plate of the wind wheel frame can also adopt a circular disc-shaped structure with lightening holes, the cylindrical rotor and the fixed rod are installed along the edges of the base and the top plate, and meanwhile, the edge of the top plate is provided with a notch to provide a moving space for the movable rod.
Further optimizing the above technical solution, as shown in fig. 1, an upper set of diagonal braces 25 and a lower set of diagonal braces 25 are arranged on the outer wall of the sleeve 11, and the two sets of diagonal braces 25 are respectively connected with the top plate 22 and the base 21; each group is three inclined supporting rods 25, one end of each inclined supporting rod 25 is connected with the sleeve 11, the other end of each inclined supporting rod 25 is connected with the top plate 22 or the base 21, and the inclined supporting rods 25 are correspondingly arranged on the inner side of the cylindrical rotor 1. Adopt the diagonal brace can play the reinforcing effect to the wind wheel frame, improve the bulk strength of wind wheel.
As shown in fig. 1 and 6, the driving motor 18 is preferably disposed at the lower end of the cylindrical rotor 1, the bottom of the sleeve 11 is provided with a conductive slip ring 13 electrically connected to a power supply, and the driving motor 18 is electrically connected to the conductive slip ring 13 for driving the cylindrical rotor 1 to rotate. The conductive slip ring can transmit the electric energy of the power supply to the driving motor, and then drives the cylindrical rotor to rotate. After the cylindrical rotor driven by the driving motor rotates, when the incoming wind passes through the rotating cylinder, the cylindrical rotor can be subjected to the Magnus force due to the Magnus effect, and the Magnus force can push the wind wheel to rotate. Here, the drive of the cylindrical rotor by the drive motor to rotate can allow for the magnus effect, which then enables the operation of the wind turbine.
In a specific embodiment of the present invention, as shown in fig. 1, 5 and 7, the eccentric mechanism includes an eccentric base 19 and three eccentric arms 9, the eccentric base 19 is sleeved on the main shaft 14 and fixed on the main shaft 14 through a fixing bolt, the eccentric base 19 is provided with an eccentric shaft 10, and the eccentric shaft 10 is arranged on one side of the main shaft 14; one end of the eccentric arm 9 is in running fit with the eccentric shaft 10, the other end of the eccentric arm is in running fit with the movable end of the airflow obstructing component 3, and the three eccentric arms 9 are uniformly distributed around the eccentric shaft 10 in the radial direction. During specific manufacturing, a shaft hole 16 matched with the main shaft 14 and an eccentric hole for mounting the eccentric shaft are processed on the eccentric base, and a fixing bolt hole 15 is processed on the side wall of the shaft hole and used for subsequently assembling and fixing a bolt. Meanwhile, the end parts of the three eccentric arms 9 are provided with connecting holes matched with the eccentric shaft 10, bearings are arranged in the connecting holes, the three eccentric arms 9 are sequentially sleeved on the eccentric shaft 10 from top to bottom, and the top of the eccentric shaft 10 is provided with a limiting sleeve used for limiting the eccentric arms 9. Meanwhile, bearings are embedded in the mounting holes at the other ends of the eccentric arms, and the eccentric arms are convenient to be matched with the movable rods 8 in a rotating mode.
Further optimizing the above technical solution, as shown in fig. 13, the eccentric arm 9 is of a telescopic structure. In a specific manufacturing process, the eccentric arm may be provided with the expansion part 20. The telescopic part can realize automatic telescopic by adopting an electric push rod, and can also adopt an inner sleeve and outer sleeve connection mode to manually adjust the length of the eccentric arm. The eccentric arm adopting the structure can flexibly control the length change within a certain range.
As shown in fig. 12, the length of the eccentric arm 9 is M, the horizontal distance between the fixed rod 7 and the movable rod 8 is L, the horizontal distance between the main shaft 14 and the eccentric shaft 10 is D, and the horizontal distance between the middle fixed rod 7 and the main shaft 14 of the airflow obstructing member is R. The fixed end of the airflow obstructing component 3 is connected with the wind wheel frame, and along with the rotation of the wind wheel, the motion trail of the fixed rod 7 of the airflow obstructing component 3 is as follows: and a solid line circle with a radius of a distance R from the airflow obstructing member fixing rod 7 to the main shaft 14, which is centered on the main shaft 14. The movable rod 8 of the airflow obstructing component 3 is connected with the eccentric arm 9; as the wind wheel rotates, the moving track of the movable rod 8 of the airflow obstructing component 3 is as follows: the length M of the eccentric arm 9 is a dashed circle with the eccentric shaft 14 as the center of the circle and the radius. As shown in fig. 22 and 23, the solid line circle represents the moving locus of the fixed lever, the dotted line circle represents the moving locus of the movable lever, and the area swept during the rotation of the airflow obstructing member is the hatched portion in the figure. In order to ensure the normal operation of the eccentric mechanism, the parameters satisfy the following formula: m + L-D is more than R, and M-L + D is less than R. When R and D are collinear, a triangle is formed with M, L; when M and D are collinear, a triangle is formed by the M and the D, R, L, smooth rotation of the wind wheel can be guaranteed through the limitation, and the wind wheel is prevented from being clamped and cannot rotate.
The invention also provides a wind turbine which comprises the Magnus type wind wheel and a rack, wherein the wind wheel frame is connected with the rack through a transmission mechanism, and the Magnus type wind wheel is used for providing a power source. Any wind turbine that includes the magnus-type wind wheel described above is within the scope of the present invention. The wind turbine can be applied to power generation or water lifting irrigation and the like.
As shown in fig. 9, when an angle α between a connecting line of the eccentric shaft and the main shaft and the direction of the incoming wind is 90 °, the connecting line is a "normal wind direction" facing the incoming wind, and based on the direction, the motion trajectory of the airflow blocking member can be changed by adjusting the angle α in fig. 9, thereby changing the aerodynamic performance of the combination of the cylindrical rotor and the airflow blocking member. This adjustment is necessary when facing different wind speeds.
For convenience of studying stress conditions of the cylindrical rotor and the airflow blocking member, assuming that the direction of incoming wind is unchanged, the wind wheel rotates clockwise in fig. 12, and the cylindrical rotor rotates to the upstream side, the downstream side, the windward side and the windward side within the running track range respectively, in the rotation process of the wind wheel, the magnus force borne by the cylindrical rotor and the tangential force borne by the airflow blocking member at a plurality of typical angles are shown in fig. 15-21, and in fig. 20 and 21, the airflow blocking member cannot be subjected to the tangential force due to shielding of the cylindrical rotor. Here, the tangential force applied to the airflow obstruction member refers to a component of a resistance force of wind acting on the airflow obstruction member in a direction tangential to a rotation locus of the wind wheel. In fig. 15-21, the wind wheel frame between the main shaft and the cylindrical rotor is simplified to be a rod body, so as to conveniently show the stress and movement conditions of the cylindrical rotor.
Wherein, the upwind side, the downwind side, the windward side and the windward side of the wind wheel in fig. 12 are divided according to the regions as shown in fig. 24: the wind wheel main shaft is used as a circle center, the incoming wind direction is 0 degree, each 90 degrees of the incoming wind direction is divided into areas along the rotation direction of the wind wheel, the areas (1) and (4) are windward sides, the areas (2) and (3) are leeward sides, the areas (1) and (2) are windward sides, and the areas (3) and (4) are opposite sides.
The working principle of the invention is as follows:
the flow of air around the cylindrical rotor can be affected by installing an airflow obstructing member around the cylindrical rotor. When the cylindrical rotor rotates to the windward side along with the wind wheel, the airflow blocking member is positioned at the parallel flow side of the cylindrical rotor, the wind wheel is pushed to rotate by the airflow blocking member under the action of wind load, and the wind speed of the parallel flow side of the cylindrical rotor is reduced by the airflow blocking member, so that the Magnus force is obviously weakened, and the negative torque of the Magnus force on the wind wheel is weakened; meanwhile, the eccentric mechanism adjusts the windward area of the airflow obstruction member to be larger, and the airflow obstruction member can be subjected to larger wind load.
When the cylindrical rotor rotates to the opposite wind side along with the wind wheel, the wind load acting force borne by the airflow obstructing component can obstruct the wind wheel to rotate at the moment, the airflow obstructing component is positioned at the opposite current side of the cylindrical rotor, the airflow obstructing component reduces the wind speed at the opposite current side of the cylindrical rotor, and the wind speed at the opposite current side is smaller, so that the Magnus force is not obviously influenced; meanwhile, the windward area of the airflow obstructing component is adjusted to be reduced by the eccentric mechanism, and the wind load action on the airflow obstructing component is reduced, so that the obstructing action on the wind wheel is reduced.
Through the arrangement of the airflow blocking members, the wind wheel with the vertical shaft can generate torque difference on the upwind side and the downwind side, and further the rotation of the wind wheel is ensured.
In conclusion, the invention has the advantages of simple and compact structure and large wind wheel driving force, the relative position of the airflow obstructing component and the cylindrical rotor and the windward area of the airflow obstructing component are controlled by the eccentric mechanism, and the Magnus force borne by the cylindrical rotor in the rotating process along with the wind wheel is further controlled, and the effect is obvious; the magnus force borne by the cylindrical rotor on the leeward side is reduced through the airflow blocking member, and the negative torque generated by the magnus force on the wind wheel is inhibited or reduced, so that the rotation of the wind wheel is realized, and the smooth operation of the vertical axis wind turbine can be realized.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. A Magnus formula wind wheel which characterized in that: the three cylindrical rotors are arranged at the edge of the wind wheel frame in a triangular shape in parallel, the cylindrical rotors are rotationally connected with the wind wheel frame and driven by a driving motor, the three airflow blocking members are correspondingly arranged at the same-direction sides of the three cylindrical rotors, the fixed ends of the three airflow blocking members are rotationally matched with the wind wheel frame, the movable ends of the airflow blocking members are connected with an eccentric mechanism, and the eccentric mechanism is used for driving the airflow blocking members to rotate to control the Magnus force applied to the cylindrical rotors; the wind wheel frame is in running fit with the main shaft, and an eccentric base of the eccentric mechanism is fixed at the tail end of the main shaft.
2. A magnus wind wheel according to claim 1, characterized in that: the side surface of the airflow obstructing member is in a rectangular flat plate shape, the middle part of the airflow obstructing member is in running fit with the wind wheel frame, tooth sockets are arranged on the two side surfaces of the airflow obstructing member, the opening of the tooth socket on the downwind side surface of the airflow obstructing member is inclined to one side of the movable end of the airflow obstructing member, and the opening of the tooth socket on the upwind side surface of the airflow obstructing member is inclined to the fixed end of the airflow obstructing member; the two side faces of the airflow obstructing component are gradually closed from the fixed end to one side of the movable end.
3. A magnus wind rotor according to claim 2, characterized in that: the middle part of the airflow obstructing component is provided with a through hole which is in running fit with a fixed rod, and two ends of the fixed rod are fixedly connected with the wind wheel frame; the movable end of the airflow obstructing component is provided with a through hole which is matched with the movable rod in a rotating way, the upper end of the movable rod is connected with the tail end of an eccentric arm of the eccentric mechanism, and the eccentric mechanism is arranged at the top of the wind wheel frame and is fixedly connected with the main shaft.
4. A magnus wind wheel according to claim 3, characterized in that: the wind wheel frame comprises a base, a sleeve and a top plate, the sleeve is sleeved outside the main shaft, the base and the top plate are respectively fixed at the lower end and the upper end of the sleeve, three supporting seats are radially and uniformly distributed around a middle disc of the base, and three fixing rods and the lower end of a rotating shaft of the cylindrical rotor are arranged on the supporting seats; the three fixing rods and the upper end of the rotation shaft of the cylindrical rotor are arranged on the top plate; and the centers of the middle discs of the base and the top plate are provided with through holes matched with the main shaft.
5. A Magnus wind wheel according to claim 4, wherein: an upper group of diagonal braces and a lower group of diagonal braces are arranged on the outer wall of the sleeve, and the two groups of diagonal braces are respectively connected with the top plate and the base; each group is three diagonal braces, one end of each diagonal brace is connected with the sleeve, the other end of each diagonal brace is connected with the top plate or the base, and the diagonal braces are correspondingly arranged on the inner side of the cylindrical rotor.
6. A Magnus wind wheel according to claim 4, wherein: the driving motor is arranged at the lower end of the cylindrical rotor, a conductive slip ring electrically connected with a power supply is arranged at the bottom of the sleeve, and the driving motor is electrically connected with the conductive slip ring and used for driving the cylindrical rotor to rotate.
7. A magnus wind wheel according to claim 3, characterized in that: the eccentric mechanism comprises an eccentric base and three eccentric arms, the eccentric base is sleeved on the main shaft and fixed through a fixing bolt, an eccentric shaft is arranged on the eccentric base, and the eccentric shaft is arranged on one side of the main shaft; one end of each eccentric arm is in running fit with the eccentric shaft, the other end of each eccentric arm is in running fit with the movable end of the airflow obstructing component, and the three eccentric arms are uniformly distributed around the eccentric shaft in the radial direction.
8. A Magnus wind wheel according to claim 7, wherein: the length of the eccentric arm is M, the horizontal distance between the fixed rod and the movable rod is L, the horizontal distance between the main shaft and the eccentric shaft is D, the horizontal distance between the fixed rod and the main shaft is R, and the operation of the eccentric mechanism meets the following formula: m + L-D is more than R, and M-L + D is less than R.
9. A Magnus wind wheel according to claim 7, wherein: the eccentric arm is of a telescopic structure.
10. A wind turbine, characterized in that: comprising a magnus wind rotor according to any of claims 1-9 and a machine frame, said wind rotor frame being connected to the machine frame by means of a transmission, said magnus wind rotor being adapted to provide a power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151317.6A CN115539293B (en) | 2022-09-21 | 2022-09-21 | Magnus wind wheel and wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151317.6A CN115539293B (en) | 2022-09-21 | 2022-09-21 | Magnus wind wheel and wind turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115539293A true CN115539293A (en) | 2022-12-30 |
| CN115539293B CN115539293B (en) | 2023-12-12 |
Family
ID=84728414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211151317.6A Active CN115539293B (en) | 2022-09-21 | 2022-09-21 | Magnus wind wheel and wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115539293B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008175070A (en) * | 2007-01-16 | 2008-07-31 | Kansai Electric Power Co Inc:The | Vertical shaft magnus type wind power generator |
| WO2010076219A2 (en) * | 2008-12-19 | 2010-07-08 | Wolfgang Watermann | Wind power plant |
| CN101839212A (en) * | 2009-03-17 | 2010-09-22 | 欧振玉 | Vertical axis wind power generating device |
| CN101929425A (en) * | 2009-06-26 | 2010-12-29 | 吕敬桥 | Vertical shaft moving vane-type wind turbine |
| WO2013014848A1 (en) * | 2011-07-22 | 2013-01-31 | Shimizu Atsushi | Vertical axis type magnus wind turbine generator |
| JP2014156838A (en) * | 2013-02-18 | 2014-08-28 | Takanori Tsuchiya | Wind power generator |
| CN205154508U (en) * | 2015-11-02 | 2016-04-13 | 衢州市杰玛机械厂 | Vertical axis wind turbine |
| CN107850054A (en) * | 2015-07-01 | 2018-03-27 | 巧连能源 | Magnus formula thrust inducing device |
| TWI710698B (en) * | 2019-12-03 | 2020-11-21 | 周中奇 | Vertical axis fluid energy converting device |
| JP2021042696A (en) * | 2019-09-10 | 2021-03-18 | 株式会社チャレナジー | Magnus thrust generator, wind power rotation device using the magnus thrust generator, water power rotation device, tidal power rotation device, and wind power generator, water power generator and tidal power generator using the magnus thrust generator |
-
2022
- 2022-09-21 CN CN202211151317.6A patent/CN115539293B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008175070A (en) * | 2007-01-16 | 2008-07-31 | Kansai Electric Power Co Inc:The | Vertical shaft magnus type wind power generator |
| WO2010076219A2 (en) * | 2008-12-19 | 2010-07-08 | Wolfgang Watermann | Wind power plant |
| CN101839212A (en) * | 2009-03-17 | 2010-09-22 | 欧振玉 | Vertical axis wind power generating device |
| CN101929425A (en) * | 2009-06-26 | 2010-12-29 | 吕敬桥 | Vertical shaft moving vane-type wind turbine |
| WO2013014848A1 (en) * | 2011-07-22 | 2013-01-31 | Shimizu Atsushi | Vertical axis type magnus wind turbine generator |
| JP2014156838A (en) * | 2013-02-18 | 2014-08-28 | Takanori Tsuchiya | Wind power generator |
| CN107850054A (en) * | 2015-07-01 | 2018-03-27 | 巧连能源 | Magnus formula thrust inducing device |
| CN205154508U (en) * | 2015-11-02 | 2016-04-13 | 衢州市杰玛机械厂 | Vertical axis wind turbine |
| JP2021042696A (en) * | 2019-09-10 | 2021-03-18 | 株式会社チャレナジー | Magnus thrust generator, wind power rotation device using the magnus thrust generator, water power rotation device, tidal power rotation device, and wind power generator, water power generator and tidal power generator using the magnus thrust generator |
| TWI710698B (en) * | 2019-12-03 | 2020-11-21 | 周中奇 | Vertical axis fluid energy converting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115539293B (en) | 2023-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1888917B1 (en) | Vertical axis wind turbine having an overspeeding regulator controlling multiple aerodynamic elements | |
| EP2769089B1 (en) | Vertical axis wind turbine with variable pitch mechanism | |
| CN108457795B (en) | Wind wheel of wind driven generator with automatic pitch control and disabling protection | |
| US8461708B2 (en) | Wind driven power generator | |
| US20140322013A1 (en) | Independent variable blade pitch and geometry wind turbine control | |
| US20200132044A1 (en) | Wind turbine | |
| US8322035B2 (en) | Vertical axis wind turbine and method of installing blades therein | |
| CN115539293A (en) | Magnus type wind wheel and wind turbine | |
| CN116181570A (en) | Vertical shaft wind wheel and wind turbine | |
| KR102026954B1 (en) | System of wind focus type electricity from wind energy | |
| KR20120115196A (en) | Wind power generator with vertical rotor | |
| CN101048591B (en) | Cross flow wind turbine | |
| CN105649869A (en) | Low-wind-speed self-variable-pitch wind driven generator impeller and low-wind-speed self-variable-pitch wind driven generator | |
| CN115324819B (en) | Magnus type vertical axis wind wheel and wind turbine | |
| KR20020005556A (en) | Savonius Windmill Blade with Air-Vent Groove | |
| CN220909892U (en) | Vertical wind motor system and vertical wind power generation system | |
| CN2828366Y (en) | Cylindrical rotor horizontal axis wind-mill generator | |
| CN115342023B (en) | Impeller structure and wind power generation device | |
| KR102341952B1 (en) | An wind power generator having a plurality of fan blade | |
| CN217682080U (en) | Blade swing control mechanism and vertical axis wind turbine | |
| CN110541791B (en) | Self-adjusting propeller V-shaped self-starting vertical axis wind turbine and method thereof | |
| JP6643615B2 (en) | Wind turbine generator teeter angle controller | |
| CN117189467A (en) | Vertical wind motor system and wind power generation system | |
| JP2005036791A (en) | Fluid-driven rotor and fluid-driven power generation device | |
| JP2022045298A (en) | Wind power generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |