Wind power generation device with cylindrical vertical shaft blades

Abstract

The invention is suitable for the technical field of wind power generation equipment, and provides a cylindrical vertical axis blade wind power generation device which comprises an annular track, an odd number of track power generation units are arranged on the annular track, and each track power generation unit comprises a rotating base. The rotating base is provided with a track generator, cylindrical blades, a blade control motor and a power generation driving wheel, the blade control motor controls the cylindrical blades to rotate forwards and backwards, the power generation driving wheel abuts against the annular track, and meanwhile a rotating shaft of the power generation driving wheel is in driving connection with an input shaft of the track generator. Wind power pushes the track power generation unit to do circular motion along the circular track, then the power generation driving wheel drives the track power generator to generate power, and in the process, the blade control motor changes the rotating direction of the cylindrical blade at the joint position of the upper tuyere arc and the lower tuyere arc; the Magnus force generated by the cylindrical blades can be always used as the effective thrust for pushing the circular motion of the trolley, and the power generation efficiency of the wind turbine is improved.

Description

Technical Field

[0001] The invention is applicable to the technical field of wind power generation equipment and provides a cylindrical vertical-axis blade wind power generation device. Background Art

[0002] In the field of wind power generation, it is usually divided into horizontal axis wind turbines and vertical axis wind turbines according to the placement direction of the transmission shaft of the blades. Among them, in the development process of vertical axis wind turbines, there has been a special vertical axis wind power generation device scheme, whose basic principle is based on a special scientific phenomenon: the Magnus effect. When the rotational angular velocity vector of a rotating object does not coincide with the flight velocity vector of the object, a lateral force will be generated in the direction perpendicular to the plane composed of the rotational angular velocity vector and the translational velocity vector. The phenomenon that the flight trajectory of the object is deflected under the action of this lateral force is called the Magnus effect, and the lateral force generated is called the Magnus effect force or the Magnus (lift) force. Specifically, in the special vertical axis wind power generation device mentioned above, its principle is to install a small car on a circular track, and install a continuously rotating cylindrical barrel on the car as a power blade. When the incoming wind blows towards the cylindrical barrel, the Magnus effect is generated on the rotating cylindrical barrel, that is, on one side of the cylinder, the direction of the wind flow is the same as the movement direction of the cylindrical barrel, which accelerates the flow of the fluid on this side. The speed of the movement of the cylinder on the other side is opposite to the incoming flow direction, which hinders the speed of the fluid flowing on this side. The circulation around the rotating cylinder induced by this will generate a lift perpendicular to the wind flow direction (the lift direction points to the same side as the above movement direction). The combined force pushes the trolley to run around the circular track, and then the circular motion of the trolley is used to drive the generator to generate electricity. However, there is a technical difficulty that must be solved in the above scheme, that is, in order to enable the lift generated on the cylindrical tube to continuously drive the trolley to reciprocate on the circular track, the cylindrical tube The cylinder must change its rotation direction once at each junction of the upwind arc and the downwind arc of the circular track of the trolley. Specifically, after the rotating cylindrical cylinder drives the trolley to run the semi-arc on the windward side and enters the lower semi-arc on the leeward side, in order to continue to obtain the Magnus force driving the trolley along the same circumferential direction, it is necessary to change the rotation direction of the rotor (otherwise the Magnus force generated on the leeward side will hinder the circular motion of the trolley). How to efficiently change the rotation direction of the cylindrical cylinder is the key to the successful application of this power generation device. Summary of the invention

[0003] To this end, the present invention provides a cylindrical vertical axis blade wind power generation device, which uses a servo motor as the driving source of the cylindrical blades. By controlling the small servo motor to change the rotation direction of the cylindrical blades at the junction of each upper air outlet arc and the lower air outlet arc, it is ensured that the Magnus force generated by the cylindrical blades can always be used as an effective thrust for the circular motion of the trolley, thereby improving the power generation efficiency of the wind turbine.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cylindrical vertical axis blade wind power generation device, comprising a circular track, the upper limit rail of the circular track is connected to at least one track power generation unit, the track power generation unit comprises a rotating base, the rotating base is provided with a track generator, cylindrical blades, a blade control motor and a power generation drive wheel, the power generation drive wheel is rotatably arranged on the rotating base, and the power generation drive wheel is abutted against the circular track, the rotating shaft of the power generation drive wheel is drivingly connected to the input shaft of the track generator, the cylindrical blades are vertically arranged, and the blade control motor is drivingly connected to the cylindrical blades, and the blade control motor can drive the cylindrical blades to rotate clockwise or counterclockwise.

[0005] Furthermore, the blade control motor is a servo motor, the cylindrical blade is a hollow cylindrical structure, and the bottom of the cylindrical blade is fixedly connected to the rotating shaft of the servo motor.

[0006] Furthermore, the rotating base is also rotatably provided with a plurality of base limiting support wheels, and the plurality of base limiting support wheels are divided into two groups, wherein one group of base limiting support wheels abuts against the inner wall of the circular track, and the other group of base limiting support wheels abuts against the outer wall of the circular track.

[0007] Furthermore, the rotating shaft of the power generation drive wheel is drivingly connected to the input shaft of the track generator via a gear transmission mechanism.

[0008] Furthermore, the rotating base is provided with a slewing bearing, and the slewing bearing comprises a supporting outer ring and a rotating inner ring, one of the supporting outer ring and the rotating inner ring is fixedly connected to the rotating base, and the other is fixedly connected to the cylindrical blade.

[0009] Furthermore, the number of the track power generation units is ≥3, and the number of the track power generation units is an odd number.

[0010] Furthermore, a central support rod is arranged at the central position within the circular track, and a power generation unit rotation limit plate is rotatably arranged on the central support rod. The power generation unit rotation limit plate is fixedly connected to the rotating base of each track power generation unit through a power generation unit rotation limit plate.

[0011] Furthermore, the rotating bases of adjacent track power generation units are fixedly connected via base connecting rods.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the present invention, the Magnus effect force generated by the rotating cylindrical blades when pushed by wind is used to push the rotating base to make circular motion along the circular track, and the kinetic energy of the rotating base drives the orbital generator to generate electricity efficiently. Compared with traditional blades, the cylindrical blades based on the Magnus effect can obtain greater lift and improve the power generation efficiency;

[0014] 2. Use the servo motor as the driving power source for the rotation of the cylindrical blades. Due to its own properties, the servo motor can quickly change the direction during the rotation of the cylindrical blades. The direct drive of the cylindrical blades by the servo motor can simplify the structure and reduce the overall weight of the equipment. At the same time, according to the actual wind speed on site, the speed of the cylindrical blades can be changed instantly, so that it can reduce unnecessary energy consumption and improve the overall power generation efficiency of the device while obtaining the maximum wind power benefit;

[0015] 3. During the circular motion of the rotating base, the relative motion between the rotating base and the circular track drives the power generation drive wheel to rotate, and then the power generation drive wheel drives the generator to generate electricity through the gear transmission mechanism. The transmission structure is simple and efficient. At the same time, by setting up multiple distributed track power generation units, the number of track generators participating in power generation can be selected according to the on-site wind speed, thereby expanding the applicable wind speed range of wind power generation and the wind power conversion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a cylindrical vertical axis blade wind power generation device mentioned in the present invention;

[0017] Figure 2 It is a structural schematic diagram of the track power generation unit mentioned in the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the rail power generation unit mentioned in another angle;

[0019] Figure 4 It is a schematic diagram of the assembly structure decomposition between the rotating base, cylindrical blades, slewing bearing and blade control motor mentioned in the present invention.

[0020] In the figure:

[0021] 100. Circular track;

[0022] 200, track power generation unit, 210, rotating base, 220, track generator, 230, cylindrical blades, 240, blade control motor, 250, power generation drive wheel, 260, gear transmission mechanism, 270, base limit support wheel, 280, slewing bearing;

[0023] 300, center support rod;

[0024] 400, power generation unit rotation limit plate, 410, power generation unit rotation limit plate;

[0025] 500. Base connecting rod. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] For example, see the attached Figure 1 The present invention provides a cylindrical vertical axis blade wind power generation device, comprising a circular track 100, wherein the upper limit track of the circular track 100 is connected to a plurality of track power generation units 200, wherein the number of the track power generation units 200 is ≥3, and the number of the track power generation units 200 is an odd number, and the number of the track power generation units 200 is set to an odd number because when an even number of track power generation units 200 are in operation, the track power generation units 200 are symmetrically arranged in pairs, resulting in a relative equilibrium state at certain moments, thereby causing an operation dead point phenomenon, while this situation will not occur with an odd number of track power generation units 200, as shown in the attached Figure 2 , Attachment Figure 3As shown, the track power generation unit 200 includes a rotating base 210, and the rotating base 210 is provided with a track generator 220, a cylindrical blade 230, a blade control motor 240 and a power generation drive wheel 250. The power generation drive wheel 250 is rotatably arranged on the rotating base 210, and the power generation drive wheel 250 is in contact with the circular track 100. The rotating shaft of the power generation drive wheel 250 and the input shaft of the track generator 220 are driven and connected through a gear transmission mechanism 260. The gear transmission mechanism 260 is a prior art, and power is transmitted through a plurality of meshing gears. In the application of this embodiment, when the rotating base 210 performs a circular motion around the circular track 100, the rotating base 210 and the circular track 100 will have a relative displacement, which will drive the power generation drive wheel 250 to rotate. The rotation of the power generation drive wheel 250 will drive the input shaft of the track generator 220 to rotate through the gear transmission mechanism 260. In this way, the track generator 220 can generate electricity, and at the same time, by changing the gear ratio between the gears, the rotation speed of the input shaft of the track generator 220 can be increased. , further improving the power generation efficiency and reducing energy loss. At the same time, the rotating base 210 is also rotatably provided with a plurality of base limiting support wheels 270. The plurality of base limiting support wheels 270 are divided into two groups, one of which is in contact with the inner wall of the circular track 100, and the other is in contact with the outer wall of the circular track 100. The plurality of base limiting support wheels 270 firmly clamp the rotating base 210 on the circular track 100 from both sides. The blade control motor 240 is a servo motor, and the cylindrical blade 23 0 is a vertically arranged hollow cylindrical structure. The bottom of the cylindrical blade 230 is fixedly connected to the rotating shaft of the servo motor. The blade control motor 240 can drive the cylindrical blade 230 to rotate clockwise or counterclockwise. The servo motor is a prior art and can achieve very precise positioning and motion control. The servo motor has a fast response speed and can make corresponding actions in a short time, which makes it advantageous in occasions that require rapid dynamic adjustment. Specifically applied to this embodiment, the forward and reverse switching of the cylindrical blade 230 can be achieved in a very short time.

[0028] In order to enhance the support of the cylindrical blade 230, in some embodiments, as shown in the attached Figure 4As shown, the rotating base 210 is provided with a slewing bearing 280. The slewing bearing 280 is a prior art and is a bearing capable of bearing a comprehensive load. It can simultaneously bear large axial loads, radial loads and overturning moments. Normally, the slewing bearing 280 includes a supporting outer ring and a rotating inner ring. One of the supporting outer ring and the rotating inner ring is fixedly connected to the rotating base 210, and the other is fixedly connected to the cylindrical blade 230. The slewing bearing 280 can provide axial support and radial support for the cylindrical blade 230, thereby preventing the deadweight of the cylindrical blade 230 from causing excessive load on the rotating shaft of the blade control motor 240, and improving the stability of the device during long-term operation.

[0029] In order to prevent the track power generation unit 200 from detaching from the circular track 100 during operation, in some embodiments, a central support rod 300 is arranged at the center position of the circular track 100, and a power generation unit rotation limit plate 400 is rotatably arranged on the central support rod 300. The power generation unit rotation limit plate 400 and the rotating base 210 of each track power generation unit 200 are respectively fixedly connected via a power generation unit rotation limit plate 410. At the same time, the rotating bases 210 of adjacent track power generation units 200 are fixedly connected via a base connecting rod 500. The power generation unit rotation limit plate 410 can counteract the centrifugal force generated by the track power generation unit 200 during operation, so that the rotating base 210 is restricted to move only along the circular track 100 to prevent detachment.

[0030] The working method of this embodiment is as follows:

[0031] Under the action of wind, similar to the traditional vertical axis fan, the wind blows the cylindrical blades 230 and then pushes the track power generation unit 200 to make a circular motion along the circular track 100. However, unlike the traditional vertical axis fan, the cylindrical blades 230 will continue to rotate during this process under the drive of the blade control motor 240. The rotating cylindrical blades 230 will generate Magnus lift during the circular motion of the track power generation unit 200. The direction of the Magnus lift is perpendicular to the wind and complies with the principles of fluid mechanics, further pushing the track power generation unit 200 forward along the circular track 100. During the circular motion of the track power generation unit 200, the track The power generation unit 200 will go through two parts: a windward semi-circular arc (a half of the circumference with the convex direction of the arc facing the windward direction) and a leeward semi-circular arc (a half of the circumference with the convex direction of the arc facing the leeward direction). When the rotating base 210 drives the cylindrical blades 230 to finish running on the windward semi-circular arc track, it needs to enter the leeward semi-circular arc track to continue circular operation. Similarly, after the rotating base 210 completes running on the leeward semi-circular arc track, it will enter the windward semi-circular arc of the next operation cycle to continue running, and this cycle will repeat. After the rotating base 210 is driven by the cylindrical blades 230 to complete the entry from the windward semi-circular arc into the leeward semi-circular arc track, the Magnus lift generated on the cylindrical blades 230 acts as The direction of rotation needs to change in the reverse direction in order to promote it to continue to push the rail trolley to perform continuous circular motion, that is, near the transition position between the windward semicircular arc and the leeward semicircular arc, the cylindrical rotor changes the original rotation direction through the blade control motor 240 to change the direction of the Magnus lift thereon, so that the rotating base 210 obtains the driving force for continuous operation along the above-mentioned fixed annular direction, and the determination of the transition position between the windward semicircular arc and the leeward semicircular arc can rely on a special wind direction detection mechanism. The wind direction detection mechanism is a prior art. The wind direction is monitored at any time by the wind direction detection mechanism. The wind direction can be used to calculate the transition point between the windward semicircular arc and the leeward semicircular arc. The transition point between the arc and the leeward semicircular arc is controlled by a computer or other control device at any time to control the reversing point of the blade control motor 240. Relying on the characteristics of the servo motor, precise reversing can be achieved. During the circular motion of the rotating base 210, the power generation drive wheel 250 will be driven to rotate along the circular track 100, and the rotation of the power generation drive wheel 250 will drive the orbital generator 220 to operate through the gear transmission mechanism 260. The electric energy generated by the orbital generator 220 will be collected and stored by a special device. At the same time, part of the generated electric energy can also be used to power the blade control motor 240. In this way, the entire device can achieve self-circulation without the need for external energy access.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0033] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention by using the above technical solutions or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A cylindrical vertical axis blade wind power generation device, characterized in that: The invention comprises a circular track (100), wherein the upper limit track of the circular track (100) is connected to at least one track power generation unit (200), wherein the track power generation unit (200) comprises a rotating base (210), wherein the rotating base (210) is provided with a track generator (220), cylindrical blades (230), a blade control motor (240) and a power generation drive wheel (250), wherein the power generation drive wheel (250) is rotatably arranged on the rotating base (210), and the power generation drive wheel (250) is in contact with the circular track (100), wherein the rotating shaft of the power generation drive wheel (250) is drivingly connected to the input shaft of the track generator (220), wherein the cylindrical blades (230) are vertically arranged, and the blade control motor (240) is drivingly connected to the cylindrical blades (230), and wherein the blade control motor (240) can drive the cylindrical blades (230) to rotate clockwise or counterclockwise.

2. A cylindrical vertical axis blade wind power generation device according to claim 1, characterized in that: The blade control motor (240) is a servo motor, the cylindrical blade (230) is a hollow cylindrical structure, and the bottom of the cylindrical blade (230) is fixedly connected to the rotating shaft of the servo motor.

3. A cylindrical vertical axis blade wind power generation device according to claim 2, characterized in that: The rotating base (210) is also rotatably provided with a plurality of base limiting support wheels (270), the plurality of base limiting support wheels (270) being divided into two groups, wherein one group of base limiting support wheels (270) abuts against the inner wall of the circular track (100), and the other group of base limiting support wheels (270) abuts against the outer wall of the circular track (100).

4. A cylindrical vertical axis blade wind power generation device according to claim 3, characterized in that: The rotating shaft of the power generation driving wheel (250) is drivingly connected to the input shaft of the track generator (220) via a gear transmission mechanism (260).

5. A cylindrical vertical axis blade wind power generation device according to claim 4, characterized in that: The rotating base (210) is provided with a slewing bearing (280), and the slewing bearing (280) comprises a supporting outer ring and a rotating inner ring, one of the supporting outer ring and the rotating inner ring is fixedly connected to the rotating base (210), and the other is fixedly connected to the cylindrical blade (230).

6. A cylindrical vertical axis blade wind power generation device according to any one of claims 1 to 5, characterized in that: The number of the track power generation units (200) is ≥3, and the number of the track power generation units (200) is an odd number.

7. A cylindrical vertical axis blade wind power generation device according to claim 6, characterized in that: A central support rod (300) is provided at the central position of the circular track (100), and a power generation unit rotation limit plate (400) is rotatably provided on the central support rod (300), and the power generation unit rotation limit plate (400) is fixedly connected to the rotation base (210) of each track power generation unit (200) via a power generation unit rotation limit plate (410).

8. The cylindrical vertical axis blade wind power generation device according to claim 7, characterized in that: The rotating bases (210) of adjacent track power generation units (200) are fixedly connected via base connecting rods (500).

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