Vertical axis wind power generation device

Abstract

The utility model relates to a vertical axis wind power generation device. The vertical axis wind power generation device comprises a supporting assembly, a generator set and a wind turbine set. The supporting assembly comprises a supporting base and a supporting column, and the supporting column is arranged on the supporting base. The generator set is arranged on the supporting column. The wind generating set comprises at least two sets of fan blades, the fan blades are rotatably arranged on the generating set, the fan blades are spirally wound on the supporting column, each fan blade is provided with a first spiral section and a second spiral section, and the maximum distance between the first spiral section and the supporting column is larger than the maximum distance between the second spiral section and the supporting column. According to the technical scheme, the problem that in the prior art, the installation stability is affected due to uneven stress of fan blades is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a vertical axis wind power generation device. Background Art

[0002] A vertical-axis wind turbine is a type of wind turbine characterized by a rotating shaft perpendicular to the wind direction, with blades arranged in intervals around the shaft. The advantage of a vertical-axis wind turbine is that it can operate without requiring alignment with the wind, eliminating the need for complex mechanical adjustments to align the blades. Furthermore, it provides stable and reliable power generation in environments with large variations in wind direction and speed, such as turbulence or gusts.

[0003] Some existing devices (for example, the authorization announcement number is CN205876600U, and the name is a spiral vertical axis wind turbine) use semicircular wind blades in the form of a spiral structure, which can be exposed to wind in any direction. Under the action of the wind, the spiral wind blades rotate 360 degrees from top to bottom, converting wind energy into mechanical energy, and then driving the entire spiral vertical axis wind turbine structure to generate electricity, and converting mechanical energy into current output through the generator set. However, the wind blades are fixed by brackets of the same size, with the middle position of the wind blades as the boundary. The wind blade part above the boundary and the wind blade part below the boundary have the same force area. This design is intended to stabilize the center of gravity of the wind blades and improve stability after installation. However, in actual application, since the wind force will change with height, this design of the wind blades can easily lead to uneven force on the wind blades, unstable installation, and easy cracking or even breakage after long-term use. Utility Model Content

[0004] The present application provides a vertical axis wind power generation device to solve the problem in the prior art that uneven force on fan blades affects installation stability.

[0005] According to the present application, a vertical-axis wind turbine generator system includes a support assembly, a generator set, and a wind turbine. The support assembly includes a support base and a support column, with the support column mounted on the support base. The generator set is mounted on the support column. The wind turbine includes at least two sets of blades, each rotatably mounted on the generator set and helically wound around the support column. The blades have a first helical segment and a second helical segment, with the maximum distance between the first helical segment and the support column being greater than the maximum distance between the second helical segment and the support column.

[0006] In some embodiments, the wind turbine includes two groups of blades, both groups of blades are spirally wound on the support column, and the two groups of blades are symmetrically arranged relative to the support column in horizontal projection.

[0007] In some embodiments, the fan has a first curved surface and a second curved surface, the first curved surface and the second curved surface are connected to form a hollow structure, and the curvature of the first curved surface is greater than the curvature of the second curved surface.

[0008] In some embodiments, a cross-sectional area of the first spiral segment of the first group of blades is such that the first curved surface is above the second curved surface, and a cross-sectional area of the second spiral segment of the first group of blades is such that the first curved surface is below the second curved surface.

[0009] In some embodiments, a cross-sectional area of the first spiral segment of the second group of blades is such that the first curved surface is below the second curved surface, and a cross-sectional area of the second spiral segment of the second group of blades is such that the first curved surface is above the first curved surface.

[0010] In some embodiments, the generator set includes a casing, a central shaft and an outer rotor structure, the casing includes a casing body, the outer rotor structure includes an outer rotor shaft, the outer rotor shaft portion is rotatably arranged in the casing body, the outer rotor shaft is connected to the wind turbine, and the central shaft is rotatably connected to the support column.

[0011] In some embodiments, the casing further includes an upper end cover and a lower end cover. The central shaft is partially disposed in the casing body. The central shaft is rotatably connected to the lower end cover via a bearing. The upper end cover and the lower end cover are respectively connected to both ends of the casing body.

[0012] In some embodiments, the outer rotor structure also includes an outer rotor upper end cover, an outer rotor lower end cover and a winding sleeve. The outer rotor upper end cover and the outer rotor lower end cover are both rotatably connected to the central shaft through bearings. The outer rotor shaft is rotatably connected to the upper end cover of the casing through bearings. The outer rotor shaft is connected to the outer rotor upper end cover. The outer rotor upper end cover and the outer rotor lower end cover are respectively connected to the two ends of the winding sleeve. The outer rotor upper end cover, the outer rotor lower end cover and the winding sleeve are all located in the casing body, and a winding is provided on the winding sleeve.

[0013] In some embodiments, the generator set also includes an inner rotor structure, which includes magnets and a central magnetic steel support frame. The magnets are installed on the central magnetic steel support frame. The central magnetic steel support frame is sleeved on the circumferential outside of the central axis and engaged with the central axis. The magnets and the central magnetic steel support frame are both located in the winding sleeve.

[0014] In some embodiments, the generator set also includes a collector ring structure, which includes a collector ring and a carbon brush assembly. The collector ring is arranged on the lower end cover of the outer rotor, and the carbon brush assembly is installed at the lower end of the casing body. The carbon brush assembly and the collector ring are slidably connected, and the collector ring is connected to the winding through a wire.

[0015] Applying the technical solution of the present application, a vertical axis wind power generation device includes: a support assembly, a generator set and a wind turbine. The support assembly includes a support base and a support column. The support column is arranged on the support base, and the support base is installed on the ground. The generator set is arranged on the support column to facilitate the cooperation with the wind turbine to achieve power generation. The wind turbine includes at least two groups of blades. The blades are rotatably arranged on the generator set. The blades rotate under the action of wind power, driving the generator set to generate electricity. The blades are spirally wound on the support column. This arrangement can improve the stability of the blades. The blades are not prone to shaking during rotation. The blades have a first spiral section and a second spiral section. The maximum distance between the first spiral section and the support column is greater than the maximum distance between the second spiral section and the support column. The purpose of this arrangement is to improve the adaptability of the blades as a whole to wind changes and reduce the possibility of the blades cracking due to uneven force. The technical solution of the present application effectively solves the problem in the prior art that uneven force on the blades affects the installation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic structural diagram of a vertical axis wind power generation device according to an embodiment of the present application is shown;

[0019] Figure 2 A schematic structural diagram showing a cross section of two groups of blades according to an embodiment of the present application is shown;

[0020] Figure 3 A schematic structural diagram of a power generation assembly according to an embodiment of the present application is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Support assembly; 11. Support base; 12. Support column; 20. Generator set; 21. Casing; 211. Casing body; 212. Casing upper end cover; 213. Casing lower end cover; 22. Center shaft; 23. Outer rotor structure; 231. Outer rotor shaft; 232. Outer rotor upper end cover; 233. Outer rotor lower end cover; 234. Winding sleeve; 24. Inner rotor structure; 241. Magnet; 242. Center magnetic steel support frame; 25. Collector ring structure; 251. Collector ring; 252. Carbon brush assembly; 30. Wind turbine; 31. Fan blade; 311. First spiral segment; 312. Second spiral segment; 313. First curved surface; 314. Second curved surface. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0026] like Figure 1As shown, an embodiment provides a vertical axis wind power generation device, comprising: a support assembly 10, a generator set 20, and a wind turbine 30. The support assembly 10 comprises a support base 11 and a support column 12, wherein the support column 12 is disposed on the support base 11. The generator set 20 is disposed on the support column 12. The wind turbine 30 comprises at least two groups of blades 31, wherein the blades 31 are rotatably disposed on the generator set 20 and are spirally wound on the support column 12. The blades 31 have a first spiral segment 311 and a second spiral segment 312, wherein the maximum distance between the first spiral segment 311 and the support column 12 is greater than the maximum distance between the second spiral segment 312 and the support column 12.

[0027] Using the technical solution of this embodiment, a vertical-axis wind turbine generator system includes a support assembly 10, a generator set 20, and a wind turbine 30. Support assembly 10 includes a support base 11 and a support column 12. Support column 12 is mounted on support base 11, which is mounted on the ground. Generator set 20 is mounted on support column 12 to facilitate cooperation with wind turbine 30 to generate electricity. The wind turbine 30 includes at least two sets of blades 31, which are rotatably arranged on the generator set 20. The blades 31 rotate under the action of wind, driving the generator set 20 to generate electricity. The blades 31 are spirally wound on the support column 12. This arrangement can improve the stability of the blades, and the blades 31 are not prone to shaking during rotation. The blades 31 have a first spiral section 311 and a second spiral section 312. The maximum distance between the first spiral section 311 and the support column 12 is greater than the maximum distance between the second spiral section 312 and the support column 12. This arrangement is intended to improve the adaptability of the blades 31 as a whole to changes in wind force and reduce the possibility of cracking of the blades 31 due to uneven force. The technical solution of this embodiment effectively solves the problem in the prior art that uneven force on the blades 31 affects the installation stability.

[0028] It should be noted that the first spiral segment 311 is arranged above the second spiral segment 312, that is, the height of the first spiral segment 311 is higher than the second spiral segment 312. In the process of the fan blade 31 rotating under the wind force, the wind force acting on the first spiral segment 311 is greater than the wind force acting on the second spiral segment 312, and the maximum distance between the first spiral segment 311 and the support column 12 is greater than the maximum distance between the second spiral segment 312 and the support column 12. This arrangement prevents the rotation speed difference between the first spiral segment 311 and the second spiral segment 312 from being too large, thereby improving the stress condition at the connection position of the first spiral segment 311 and the second spiral segment 312, making the fan blade 31 less likely to crack.

[0029] like Figure 1As shown, in some embodiments, the wind turbine 30 includes two sets of blades 31, both of which are spirally wound around the support column 12. In horizontal projection, the two sets of blades 31 are symmetrically arranged relative to the support column 12. This arrangement allows the lift generated by the airflow on the two sets of blades 31 to generate torque to the greatest extent, causing the two sets of blades 31 to rotate. The lift and wind force together realize the rotation of the two sets of blades 31.

[0030] It should be emphasized that the number of the sectors 31 can be flexibly selected according to actual conditions.

[0031] like Figure 2 As shown, in some embodiments, the fan blade 31 has a first curved surface 313 and a second curved surface 314, and the first curved surface 313 and the second curved surface 314 are connected to form a hollow structure. This design can reduce the weight of the fan blade 31 and facilitate the rotation of the fan blade 31. At the same time, the hollow setting allows a reinforcing beam to be set inside the fan blade 31 to further strengthen the strength of the fan blade 31, so that the fan blade 31 is not easy to crack under long-term rotation. The curvature of the first curved surface 313 is greater than the curvature of the second curved surface 314. The flow rate of the airflow when passing through the first curved surface 313 and the second curved surface 314 is different, thereby generating a pressure difference, so that the fan blade 31 is subjected to the effect of lift. Figure 2 The middle arrow shows the direction of the lift, and the blades 31 rotate under the combined action of the lift and the wind force directly acting on the blades 31.

[0032] like Figure 2 As shown, in some embodiments, Figure 2 A and B are used to illustrate the cross-sectional conditions of the first spiral segment 311 of the first group of blades 31 and the second spiral segment 312 of the first group of blades 31, respectively. The cross-sectional area of the first spiral segment 311 of the first group of blades 31 is: the first curved surface 313 is above the second curved surface 314, and the first spiral segment 311 of the first group of blades 31 is subjected to an upward lift force. The cross-sectional area of the second spiral segment 312 of the first group of blades 31 is: the first curved surface 313 is below the second curved surface 314, and the second spiral segment 312 of the first group of blades 31 is subjected to a downward lift force.

[0033] like Figure 2 As shown, in some embodiments, Figure 2 In the figure, C and D are used to illustrate the cross-sectional conditions of the first spiral segment 311 of the second group of blades 31 and the second spiral segment 312 of the second group of blades 31, respectively. The cross-sectional area of the first spiral segment 311 of the second group of blades 31 is: the first curved surface 313 is below the second curved surface 314, and the first spiral segment 311 of the second group of blades 31 is subjected to a downward force. The cross-sectional area of the second spiral segment 312 of the second group of blades 31 is: the first curved surface 313 is above the first curved surface 313, and the second spiral segment 312 of the second group of blades 31 is subjected to an upward force.

[0034] It should be noted that the first spiral segment 311 of the first group of fan blades 31 and the first spiral segment 311 of the second group of fan blades 31 are located at the same height. When affected by wind, the lift force they receive forms a first torque to further accelerate the rotation of the fan blades 31. The second spiral segment 312 of the first group of fan blades 31 and the second spiral segment 312 of the second group of fan blades 31 are located at the same height. When affected by wind, the lift force they receive forms a second torque to further accelerate the rotation of the fan blades 31. Since the directions of the first torque and the second torque are the same, the fan blades 31 are more stable and less likely to crack during rotation.

[0035] like Figure 3 As shown, in some embodiments, the generator set 20 includes a casing 21, a central shaft 22 and an outer rotor structure 23. The casing 21 includes a casing body 211. The outer rotor structure 23 includes an outer rotor shaft 231. The outer rotor shaft 231 is partially rotatably arranged in the casing body 211. The outer rotor shaft 231 is connected to the wind turbine 30. During the rotation of the wind turbine 30, the outer rotor shaft 231 is driven to rotate synchronously. The central shaft 22 and the support column 12 are rotatably connected to realize the connection between the generator set 20 as a whole and the support column 12.

[0036] like Figure 3 As shown, in some embodiments, the casing 21 further includes an upper casing cover 212 and a lower casing cover 213. The central shaft 22 is partially passed through the casing body 211. The central shaft 22 is rotatably connected to the casing lower end cover 213 through a bearing. The upper casing cover 212 and the lower casing cover 213 are respectively connected to the two ends of the casing body 211, thereby sealing the casing body 211 and protecting the structure arranged inside the casing body 211 together with the casing body 211.

[0037] like Figure 3 As shown, in some embodiments, the outer rotor structure 23 further includes an outer rotor upper end cover 232, an outer rotor lower end cover 233 and a winding sleeve 234. The outer rotor upper end cover 232 and the outer rotor lower end cover 233 are both rotatably connected to the central shaft 22 through bearings. The outer rotor shaft 231 is rotatably connected to the casing upper end cover 212 through bearings. The outer rotor shaft 231 is connected to the outer rotor upper end cover 232. During the rotation of the outer rotor shaft 231, the outer rotor upper end cover 232 is driven to rotate synchronously. The outer rotor upper end cover 232 and the outer rotor lower end cover 233 are respectively connected to the two ends of the winding sleeve 234 to drive the winding sleeve 234 to rotate synchronously. The outer rotor upper end cover 232, the outer rotor lower end cover 233 and the winding sleeve 234 are all located in the casing body 211, and the winding sleeve 234 is provided with a winding.

[0038] like Figure 3As shown, in some embodiments, the generator set 20 also includes an inner rotor structure 24, the inner rotor structure 24 includes a magnet 241 and a central magnetic steel support frame 242, the magnet 241 is installed on the central magnetic steel support frame 242, the central magnetic steel support frame 242 is sleeved on the circumferential outer side of the central shaft 22, and is engaged with the central shaft 22, and can rotate with the rotation of the central shaft 22. The central shaft 22 can be connected to a drive motor to drive the central shaft 22 and the outer rotor shaft 231 to rotate in the opposite direction. The rotation of both the inner rotor structure 24 and the outer rotor structure 23 can further improve the power generation efficiency. The magnet 241 and the central magnetic steel support frame 242 are both located in the winding sleeve 234, reducing the adverse effects of the external environment.

[0039] like Figure 3 As shown, in some embodiments, the generator set 20 also includes a collector ring structure 25, and the collector ring structure 25 includes a collector ring 251 and a carbon brush assembly 252. The collector ring 251 is arranged on the lower end cover 233 of the outer rotor, and rotates synchronously with the rotation of the lower end cover 233 of the outer rotor. The carbon brush assembly 252 is installed at the lower end of the casing body 211. The carbon brush assembly 252 and the collector ring 251 are slidably connected. The collector ring 251 is connected to the winding through a wire to realize current transmission.

[0040] It should be noted that the vertical axis wind power generation device also includes an energy storage battery. The energy storage battery and the generator set 20 are connected by wires to achieve energy storage. The specific line connection and energy storage method are existing technologies and will not be repeated here.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A vertical axis wind power generation device, characterized in that: include: A support assembly (10), the support assembly (10) comprising a support base (11) and a support column (12), the support column (12) being arranged on the support base (11); A generator set (20), the generator set (20) being arranged on the support column (12); A wind turbine (30) comprising at least two groups of blades (31), wherein the blades (31) are rotatably arranged on the generator set (20), and the blades (31) are spirally wound on the support column (12). The blades (31) have a first spiral section (311) and a second spiral section (312), and the maximum distance between the first spiral section (311) and the support column (12) is greater than the maximum distance between the second spiral section (312) and the support column (12).

2. The vertical axis wind power generation device according to claim 1, characterized in that: The wind turbine (30) comprises two groups of blades (31), both groups of blades (31) are spirally wound on the support column (12), and in horizontal projection, the two groups of blades (31) are symmetrically arranged relative to the support column (12).

3. The vertical axis wind power generation device according to claim 2, characterized in that: The fan blade (31) has a first curved surface (313) and a second curved surface (314), the first curved surface (313) and the second curved surface (314) are connected to form a hollow structure, and the curvature of the first curved surface (313) is greater than the curvature of the second curved surface (314).

4. The vertical axis wind power generation device according to claim 3, characterized in that: The cross-sectional area of the first spiral segment (311) of the first group of blades (31) is such that the first curved surface (313) is located above the second curved surface (314), and the cross-sectional area of the second spiral segment (312) of the first group of blades (31) is such that the first curved surface (313) is located below the second curved surface (314).

5. The vertical axis wind power generation device according to claim 3, characterized in that: The cross-sectional area of the first spiral segment (311) of the second group of blades (31) is such that the first curved surface (313) is located below the second curved surface (314), and the cross-sectional area of the second spiral segment (312) of the second group of blades (31) is such that the first curved surface (313) is located above the first curved surface (313).

6. The vertical axis wind power generation device according to claim 1, characterized in that: The generator set (20) includes a casing (21), a central shaft (22) and an outer rotor structure (23); the casing (21) includes a casing body (211); the outer rotor structure (23) includes an outer rotor shaft (231); the outer rotor shaft (231) is partially rotatably disposed in the casing body (211); the outer rotor shaft (231) is connected to the wind turbine (30); and the central shaft (22) is rotatably connected to the support column (12).

7. The vertical axis wind power generation device according to claim 6, characterized in that: The casing (21) further comprises a casing upper end cover (212) and a casing lower end cover (213); the central shaft (22) is partially disposed in the casing body (211); the central shaft (22) is rotatably connected to the casing lower end cover (213) via a bearing; the casing upper end cover (212) and the casing lower end cover (213) are respectively connected to two ends of the casing body (211).

8. The vertical axis wind power generation device according to claim 7, characterized in that: The outer rotor structure (23) further comprises an outer rotor upper end cover (232), an outer rotor lower end cover (233) and a winding sleeve (234). The outer rotor upper end cover (232) and the outer rotor lower end cover (233) are both rotatably connected to the central shaft (22) via bearings. The outer rotor shaft (231) is rotatably connected to the casing upper end cover (212) via bearings. The outer rotor shaft (231) is connected to the outer rotor upper end cover (232). The outer rotor upper end cover (232) and the outer rotor lower end cover (233) are respectively connected to two ends of the winding sleeve (234). The outer rotor upper end cover (232), the outer rotor lower end cover (233) and the winding sleeve (234) are all located in the casing body (211). A winding is provided on the winding sleeve (234).

9. The vertical axis wind power generation device according to claim 8, characterized in that: The generator set (20) further includes an inner rotor structure (24), the inner rotor structure (24) including a magnet (241) and a central magnetic steel support frame (242), the magnet (241) being mounted on the central magnetic steel support frame (242), the central magnetic steel support frame (242) being sleeved on the circumferential outer side of the central shaft (22) and engaging with the central shaft (22), the magnet (241) and the central magnetic steel support frame (242) both being located within the winding sleeve (234).

10. The vertical axis wind power generation device according to claim 9, characterized in that: The generator set (20) further includes a collector ring structure (25), the collector ring structure (25) including a collector ring (251) and a carbon brush assembly (252), the collector ring (251) being arranged on the lower end cover (233) of the outer rotor, the carbon brush assembly (252) being mounted on the lower end of the casing body (211), the carbon brush assembly (252) and the collector ring (251) being slidably connected, and the collector ring (251) being connected to the winding via a wire.

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