Wind power generation device

Abstract

The utility model provides a wind power generation device. The wind power generation device comprises a tower body; the at least two wind driven generators are arranged on the tower body and are stacked in the extending direction of the tower body; a rotating shaft of each wind driven generator is parallel to the extending direction, and the bottom of each wind driven generator is connected with a first connecting piece; wherein the two first connecting pieces at the bottoms of the two adjacent wind driven generators are connected through at least two second connecting pieces, and the arrangement direction of the second connecting pieces is different from that of the first connecting pieces. According to the wind power generation device, the power generation efficiency of the wind power generation device can be improved, meanwhile, the occupied area of the wind power generation device is reduced, and the stability of the wind power generation device is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of renewable energy power generation, and in particular to a wind power generation device. Background Art

[0002] In the relevant technology, wind turbines are primarily categorized into horizontal-axis wind turbines and vertical-axis wind turbines based on their structural form. Vertical-axis wind turbines occupy a smaller footprint and generate less noise. However, currently, vertical-axis wind turbines are primarily small, with power ratings ranging from 1W to 100kW. Furthermore, according to wind tunnel tests conducted by the China Aerodynamics Research and Development Center, the wind energy utilization rate of vertical-axis wind turbines generally ranges from 23% to 30%, lower than the approximately 45% wind energy utilization efficiency of large horizontal-axis wind turbines. Consequently, single vertical-axis wind turbines suffer from low power generation and yield. Utility Model Content

[0003] In order to overcome the problems in the related art, the present disclosure provides a wind power generation device, which can improve the power generation efficiency of the wind power generation device while reducing the footprint of the wind power generation device and improving the stability of the wind power generation device.

[0004] According to an embodiment of the present disclosure, there is provided a wind power generation device, comprising:

[0005] tower body;

[0006] At least two wind turbines are arranged on the tower body and stacked along the extension direction of the tower body;

[0007] The rotation axis of each wind turbine is parallel to the extension direction of the tower body, and the bottom of each wind turbine is connected to a first connecting member;

[0008] The two first connecting members at the bottoms of two adjacent wind turbines are connected via at least two second connecting members, and the arrangement direction of the second connecting members is different from that of the first connecting members.

[0009] In some embodiments, the two adjacent wind turbines include a first wind turbine and a second wind turbine stacked on the first wind turbine;

[0010] At least two second connecting members are arranged at intervals between the first connecting member at the bottom of the first wind turbine and the first connecting member at the bottom of the second wind turbine, and surround the first wind turbine.

[0011] In some embodiments, the wind power generation device further comprises:

[0012] The third connecting member is connected between the top of the first wind turbine and the first connecting member at the bottom of the second wind turbine.

[0013] In some embodiments, the third connector includes:

[0014] a first bearing connected to the top of the first wind turbine;

[0015] a connecting rod connected to the first connecting piece at the bottom of the second wind turbine;

[0016] The first rotating body is arranged between the first bearing and the connecting rod, and is connected to the first bearing and the connecting rod respectively.

[0017] In some embodiments, the first connecting member is arranged in a direction perpendicular to the extension direction of the tower body; and / or,

[0018] The second connecting member is arranged in a direction parallel to the extension direction of the tower body.

[0019] In some embodiments, the first connecting member includes a connecting disk, a connecting plate, or a connecting rod;

[0020] The second connecting member includes a connecting column or a connecting rod.

[0021] In some embodiments, the first connecting member is detachably connected to the second connecting member.

[0022] In some embodiments, the number of second connecting members between two first connecting members at the bottoms of two adjacent wind turbines is positively correlated with the number of wind turbines.

[0023] In some embodiments, the first connecting member at the bottom of the wind turbine generator on the first floor is connected to the top of the tower.

[0024] In some embodiments, the stator coils of the respective wind turbines are connected to external circuits respectively.

[0025] In some embodiments, a wind turbine includes:

[0026] wind wheel;

[0027] A power generation module connected to the wind wheel, the power generation module being configured to generate electricity under the drive of the wind wheel;

[0028] The second rotating body is arranged between the power generation module and the first connecting member at the bottom of the wind turbine generator, and the second rotating body is connected to the first connecting member and the second rotating body respectively.

[0029] In some embodiments, a wind turbine includes:

[0030] The wind wheel comprises a rotating shaft and at least two blades; a first support disk and a second support disk are formed at both ends of the rotating shaft, and each blade is connected to the first support disk and the second support disk;

[0031] a power generation module connected to the rotating shaft, wherein the power generation module is configured to generate electricity when driven by the rotating shaft;

[0032] The second rotating body is arranged between the power generation module and the first connecting member at the bottom of the wind turbine generator, and the second rotating body is connected to the first connecting member and the power generation module respectively.

[0033] In some embodiments, the power generation module comprises:

[0034] A housing is provided between the wind wheel and the second rotating body, the housing is connected to the second rotating body, and is provided with a through hole;

[0035] The stator coil is arranged in the housing and connected to the housing;

[0036] The magnetic component is arranged in the shell and is connected to the rotating shaft with the through hole through the second bearing. Under the drive of the rotating shaft, the magnetic component can rotate relative to the stator coil.

[0037] In the disclosed embodiments, by stacking at least two wind turbines along the extension direction of the tower, the at least two wind turbines can share a single tower while generating electricity. This improves the power generation efficiency of the wind turbine while reducing the footprint of the at least two wind turbines and lowering the installation cost of the wind turbine.

[0038] On the other hand, by providing a first connector at the bottom of each wind turbine and at least two second connectors between two adjacent first connectors, two adjacent wind turbines located above the first connectors can be securely connected. This improves the stability of the connection between the wind turbines and, in turn, the stability of the wind turbine generator system.

[0039] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0041] Figure 1 Schematic diagram of a wind power generation device provided in an embodiment of the present disclosure.

[0042] Figure 2 Schematic diagram of a wind power generation device provided in an embodiment of the present disclosure.

[0043] Figure 3 Schematic diagram of a wind power generation device provided in an embodiment of the present disclosure.

[0044] Figure 4 Schematic diagram of a wind power generation device provided in an embodiment of the present disclosure.

[0045] Figure 5 Schematic diagram of a wind power generation device provided in an embodiment of the present disclosure.

[0046] Figure 6 Schematic diagram of a wind power generation device provided in an embodiment of the present disclosure.

[0047] Figure 7 Schematic diagram of a blade in a wind power generation device provided in an embodiment of the present disclosure.

[0048] Figure 8 Schematic diagram of a wind wheel in a wind power generation device provided in an embodiment of the present disclosure.

[0049] Figure 9 Schematic diagram of a power generation module in a wind power generation device provided in an embodiment of the present disclosure.

[0050] Figure 10 Schematic diagram of a wind turbine in a wind power generation device according to an embodiment of the present disclosure.

[0051] Reference numerals:

[0052] Tower body 1; wind turbine 2; wind rotor 21; rotating shaft 211; blades 212; first support member 213; second support member 214; first support plate 215; first bolt 216; second support plate 217; power generation module 22; end cover 221; housing 222; second bearing 223; stator coil 224; magnetic assembly 225; third bearing 226; bearing retaining ring 227; second bolt 228; second swivel 23; first connecting member 3; second connecting member 4; third connecting member 5; fourth connecting member 6; fifth connecting member 7; sixth connecting member 8; seventh connecting member 9; first angle a; second angle b. DETAILED DESCRIPTION

[0053] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0054] In the related art, wind turbines are mainly divided into horizontal-axis wind turbines and vertical-axis wind turbines according to their different structural forms. Among them, the rotation axis of the wind rotor of a horizontal-axis wind turbine is parallel to the wind direction, while the rotation axis of the wind rotor of a vertical-axis wind turbine is perpendicular to the ground or the direction of the airflow.

[0055] Moreover, vertical axis wind turbines have the characteristic of low starting wind speed. For vertical axis wind turbines with H-shaped wind rotors, a starting wind speed of 2m / s can be achieved through reasonable airfoil and installation angle design, which is better than the starting wind speed of 3m / s of most current horizontal axis wind turbines. In addition, the tip speed ratio of the vertical axis wind rotor of a vertical axis wind turbine (referring to the ratio of the linear velocity of the blade tip of the wind turbine to the wind speed) is generally greater than 1.5, and the tip speed ratio of the vertical axis wind rotor is generally less than 2. The tip speed ratio of the horizontal axis wind rotor in a horizontal axis wind turbine is generally greater than 5, and the tip speed ratio of the horizontal axis wind rotor is less than 7. Since a high tip speed ratio is more likely to generate greater aerodynamic noise, the noise generated by a vertical axis wind turbine will be much smaller than that of a horizontal axis wind turbine. In other words, vertical axis wind turbines are more flexible in application and are suitable for application scenarios such as cities and residential areas.

[0056] However, in the prior art, vertical-axis wind turbines are primarily small, and these single units suffer from issues such as low power generation and low energy yield. For wind farms with high power requirements, increasing the number of vertical-axis wind turbines is a common solution, but this also increases the floor space, tower steel usage, and costs.

[0057] Based on this, see Figure 1 , Figure 1 FIG. 1 is a structural diagram of a wind power generation device according to an exemplary embodiment. Figure 1 and Figure 2 As shown, the device includes:

[0058] Tower body 1;

[0059] At least two wind turbines 2 are arranged on the tower body 1 and stacked along the extension direction of the tower body 1;

[0060] The rotation axis 211 of each wind turbine 2 is parallel to the extension direction of the tower body 1, and the bottom of each wind turbine 2 is connected to a first connecting member 3;

[0061] The two first connectors 3 at the bottom of two adjacent wind turbines 2 are connected by at least two second connectors 4 , and the arrangement direction of the second connectors 4 is different from that of the first connectors 3 .

[0062] It should be noted that, here, the rotation axis 211 of each wind turbine 2 is parallel to the extension direction of the tower body 1 , which may mean that the installation direction of the rotation axis 211 of each wind turbine 2 is parallel to the extension direction of the tower body 1 .

[0063] For example, the angle between the extension direction of the tower body 1 and the ground can be greater than or equal to a first preset angle. In this case, since the setting direction of the rotation axis 211 is parallel to the extension direction of the tower body 1, and the angle between the extension direction of the tower body 1 and the ground can be greater than or equal to the first preset angle, the angle between the setting direction of the rotation axis 211 and the ground can be greater than or equal to the first preset angle.

[0064] For example, the angle between the extension direction of the tower body 1 and the ground can be 90°. In this case, the angle between the setting direction of the rotation axis 211 and the ground can also be 90°. In other words, the rotation axis of the wind turbine can be set perpendicular to the ground, and the wind turbine can be understood as a vertical axis wind turbine.

[0065] In some embodiments, the tower body 1 may be a tower pole, a tower tube, or a tower column. Here, there is no limitation on the shape of the tower body 1, as long as the tower body 1 can be used to support at least two wind turbines 2 stacked along the extension direction of the tower body 1.

[0066] In some embodiments, each wind turbine 2 may be connected to the tower body 1. Alternatively, the wind turbine 2 located on the first floor of at least two wind turbines 2 may be connected to the tower body 1, while the remaining wind turbines 2 may not be connected to the tower body 1. In other words, at least two wind turbines 2 may be stacked above the tower body 1.

[0067] In some embodiments, the bottom of each wind turbine 2 can be fixedly connected to the tower body 1. For example, the bottom of each wind turbine 2 can be welded to the tower body 1. In this way, the stability of the connection between each wind turbine 2 and the tower body 1 can be enhanced.

[0068] In other embodiments, the bottom of each wind turbine 2 can be detachably connected to the tower body 1. For example, the bottom of each wind turbine 2 can be threadedly connected to the tower body 1. In this way, when each wind turbine 2 needs maintenance, it can be removed from the tower body 1 and maintained.

[0069] In some embodiments, the bottoms of some of the at least two wind turbines 2 may be fixedly connected to the tower body 1 , and the bottoms of the remaining wind turbines 2 may be detachably connected to the tower body 1 .

[0070] For example, the bottom of the wind turbine 2 on the first floor can be fixedly connected to the tower body 1, and / or the bottom of the wind turbine 2 on the top floor can be detachably connected to the tower body 1. In this way, when the wind turbine 2 on the first floor is relatively low and convenient for maintenance, the stability of the wind turbine 2 can be improved, and the wind turbine 2 on the upper floor can be disassembled to facilitate maintenance of the wind turbine 2 on the top floor.

[0071] In some embodiments, the bottom of each wind turbine 2 can be fixedly connected to the first connecting member 3. For example, the bottom of each wind turbine 2 can be welded to the first connecting member 3. In this way, the stability of the connection between each wind turbine 2 and the first connecting member 3 can be enhanced.

[0072] In other embodiments, the bottom of each wind turbine 2 may be detachably connected to the first connecting member 3. For example, the bottom of each wind turbine 2 may be threadedly connected to the first connecting member 3. In this way, when each wind turbine 2 needs maintenance, it can be removed from the first connecting member 3 for maintenance.

[0073] In some embodiments, the bottoms of some of the at least two wind turbines 2 may be fixedly connected to the first connecting member 3 , and the bottoms of the remaining wind turbines 2 may be detachably connected to the first connecting member 3 .

[0074] For example, the bottom of the wind turbine 2 on the first floor can be fixedly connected to the first connecting member 3, and / or the bottom of the wind turbine 2 on the top floor can be detachably connected to the first connecting member 3. In this way, when the wind turbine 2 on the first floor is relatively low and convenient for maintenance, the stability of the wind turbine 2 can be improved, and the wind turbine 2 on the upper floor can be disassembled to facilitate maintenance of the wind turbine 2 on the top floor.

[0075] In some embodiments, the first angle a between the setting direction of the first connecting member 3 and the setting direction of the second connecting member 4 may be greater than or equal to the second preset angle. Figure 2 As shown, the second preset angle may be 90°, and the first angle a between the arrangement direction of the first connecting member 3 and the arrangement direction of the second connecting member 4 may be 90°.

[0076] In some embodiments, the first angle a between the arrangement direction of the first connector 3 and the arrangement direction of the second connector 4 may not be 90°. In other words, an oblique support structure may be formed between the first connector 3 and the second connector 4. For example, see Figure 1, the angle a between the setting direction of the first connecting member 3 and the setting direction of the second connecting member 4 can be less than 90°.

[0077] In some embodiments, two adjacent wind turbines 2 may include a first wind turbine and a second wind turbine stacked on the first wind turbine. Here, the two first connectors 3 at the bottom of the two adjacent wind turbines 2 are connected by at least two second connectors 4, which may mean that the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine are connected by at least two second connectors 4.

[0078] In some embodiments, between two adjacent wind turbines 2, the volume of the first wind turbine can be larger than that of the second wind turbine. And / or, the volume of the first connector 3 at the bottom of the first wind turbine can be larger than that of the first connector 3 at the bottom of the second wind turbine. In this way, the structure of the at least two stacked wind turbines 2 approaches a triangular structure, thereby improving the connection stability between the at least two wind turbines 2.

[0079] In some embodiments, in two adjacent wind turbines 2 , the volume of the first wind turbine may be the same as the volume of the second wind turbine.

[0080] In the embodiment of the present disclosure, on the one hand, by stacking at least two wind turbines 2 along the extension direction of the tower body 1, it is possible to enable at least two wind turbines 2 to share a single tower body 1 while generating electricity based on the at least two wind turbines 2. In this way, the power generation efficiency of the wind turbine generator can be improved while reducing the footprint of the at least two wind turbines 2 and lowering the installation cost of the wind turbine generator. On the other hand, by providing a first connector 3 at the bottom of each wind turbine generator 2 and providing at least two second connectors 4 between two adjacent first connectors 3, two adjacent wind turbines 2 provided above the first connectors 3 can be securely connected. In this way, the stability of the connection between the wind turbines 2 can be improved, thereby improving the stability of the wind turbine generator.

[0081] It is understood that in the disclosed embodiments, by sharing a tower body and stacking at least two wind turbines above the tower body, a steamer-type wind turbine structure sharing a tower body can be formed. Here, when the rotation axis of the wind turbine is parallel to the extension direction of the tower body, that is, when the wind turbine is a vertical-axis wind turbine, the steamer-type wind turbine structure sharing a tower body can be understood as a steamer-type vertical-axis wind turbine generator set.

[0082] Compared to the related art method of using a single vertical-axis wind turbine to generate electricity, which results in low power generation, the steamer-type vertical-axis wind turbine provided in the embodiments of the present disclosure has a higher power generation capacity. Compared to the related art method of requiring the construction of multiple towers to generate electricity using multiple vertical wind turbines mounted on the towers, which results in a large amount of tower steel, a large floor area, and high construction costs, the steamer-type vertical-axis wind turbine provided in the embodiments of the present disclosure uses a single tower, thereby reducing the amount of tower steel used, the floor area occupied, and the cost of constructing the steamer-type vertical-axis wind turbine.

[0083] In some embodiments, see Figure 1 , two adjacent wind turbines 2 include a first wind turbine and a second wind turbine stacked on the first wind turbine;

[0084] At least two second connecting members 4 are spaced apart between the first connecting member 3 at the bottom of the first wind turbine and the first connecting member 3 at the bottom of the second wind turbine, and surround the first wind turbine.

[0085] In some embodiments, the number of the second connectors 4 between the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine may be a first predetermined number. For example, the predetermined number may be three.

[0086] In some embodiments, the spacing between two adjacent second connectors 4 between the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine is greater than a predetermined distance. This allows sufficient clearance between two adjacent second connectors 4 for wind flow to pass through, thereby providing wind energy for the first wind turbine to generate electricity.

[0087] In some embodiments, the spacing between two adjacent second connectors 4 between the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine is the same. Thus, the at least two second connectors 4 between the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine can be evenly distributed around the first wind turbine. In this case, each second connector 4 is evenly stressed when supporting the first connector 3, thereby increasing the service life of each second connector 4.

[0088] In the disclosed embodiment, at least two second connectors 4 are spaced apart between the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine, and the at least two second connectors 4 surround the first wind turbine. This provides support from multiple directions, thereby firmly connecting the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine. This improves the stability of the connection between the first connector 3 at the bottom of the first wind turbine and the first connector 3 at the bottom of the second wind turbine.

[0089] In some embodiments, see Figure 3 , the wind power generation device further comprises:

[0090] The third connecting member 5 is connected between the top of the first wind turbine and the first connecting member 3 at the bottom of the second wind turbine.

[0091] In some embodiments, the third connecting member 5 may include a connecting plate, a connecting rod, or a connecting column.

[0092] In some embodiments, the wind turbine generator includes a third wind turbine generator, which is the wind turbine generator 2 located at the top of the at least two wind turbine generators 2 arranged in a stacked manner. That is, the third wind turbine generator is the wind turbine generator 2 located at the topmost layer of the at least two wind turbine generators 2 arranged in a stacked manner.

[0093] In some embodiments, see Figure 4 , a fourth connecting member 6 may be provided at the top of the third wind turbine. The fourth connecting member 6 at the top of the third wind turbine and the first connecting member 3 at the bottom of the third wind turbine may be connected by at least two fifth connecting members 7. The setting direction of the fourth connecting member 6 may be different from the setting direction of the fifth connecting member 7. Here, at least two fifth connecting members 7 may be provided between the first connecting member 3 provided at the bottom of the third wind turbine and the fourth connecting member 6 provided at the top of the third wind turbine, and the first connecting member 3 provided at the bottom of the third wind turbine may be firmly connected to the first connecting member 3 at the bottom of other wind turbines located at the bottom of the third wind turbine. In this way, the third wind turbine stacked on the top layer and the other wind turbines located below the third wind turbine may be firmly connected, thereby enhancing the connection stability between the wind turbines.

[0094] In some embodiments, the arrangement direction of the fourth connection member 6 may be the same as the arrangement direction of the first connection member 3 , and the arrangement direction of the fifth connection member 7 may be the same as the arrangement direction of the second connection member 4 .

[0095] In some embodiments, the fourth connector 6 may include a connecting disc, a connecting plate, or a connecting rod. The structure of the fourth connector 6 may be the same as that of the first connector 3. The fifth connector 7 may include a connecting rod or a connecting column. The structure of the fifth connector 7 may be the same as that of the second connector 4.

[0096] In some embodiments, at least two fifth connecting members are spaced apart between the first connecting member 3 at the bottom of the third wind turbine and the fourth connecting member at the top of the third wind turbine, and surround the third wind turbine.

[0097] In some embodiments, the distance between two adjacent fifth connectors is greater than a predetermined distance, so that a sufficient gap can be reserved between two adjacent fifth connectors 7 for wind flow to pass through, thereby providing wind energy that can be used for power generation to the third wind turbine.

[0098] In some embodiments, the spacing between two adjacent fifth connectors is the same. Thus, at least two fifth connectors 7 can be evenly distributed around the third wind turbine. In this case, when the fifth connectors 7 support the fourth connector located at the top of the third wind turbine, the forces acting on each fifth connector 7 are evenly distributed, thereby improving stability and extending the service life of each fifth connector 7.

[0099] In some embodiments, see Figure 5 A sixth connecting member 8 may be provided on top of the third wind turbine, and a fourth connecting member 6 may be provided above the sixth connecting member 8 and connected to the fourth connecting member 6. The sixth connecting member 8 may include a connecting plate, a connecting rod, or a connecting column. The structure of the sixth connecting member 8 may be the same as that of the third connecting member 5.

[0100] In the embodiment of the present disclosure, the third connecting member 5 is provided between the first connecting member 3 at the top of the first wind turbine and the bottom of the second wind turbine, thereby improving the stability of the first wind turbine.

[0101] In some embodiments, the third connecting member 5 includes:

[0102] a first bearing connected to the top of the first wind turbine;

[0103] A connecting rod connected to the first connecting member 3 at the bottom of the second wind turbine;

[0104] The first rotating body is arranged between the first bearing and the connecting rod, and is connected to the first bearing and the connecting rod respectively.

[0105] In some embodiments, the connecting rod can be detachably connected to the first connecting member 3 at the bottom of the second wind turbine. For example, the connecting rod can be threadedly connected to the first connecting member 3 at the bottom of the second wind turbine. Alternatively, the connecting rod can be fixedly connected to the first connecting member 3 at the bottom of the second wind turbine.

[0106] In some embodiments, the first rotator may be fixedly connected to the first bearing and the connecting rod, respectively. Alternatively, the first rotator may be detachably connected to the first bearing and the connecting rod, respectively.

[0107] In some embodiments, the sixth connector 8 may include: a fourth bearing connected to the fourth connector 6; a connecting rod connected to the first connector 3 at the bottom of the third wind turbine; and a third rotator disposed between the connecting rod and the fourth bearing, connected to the fourth bearing and the connecting rod, respectively. It should be noted that, for ease of distinction, the connecting rod included in the third connector 5 may be referred to as the first connecting rod, and the connecting rod in the sixth connector 8 may be referred to as the second connecting rod.

[0108] In the embodiment of the present disclosure, the first connecting member 3 at the top of the first wind turbine and the first connecting member 3 at the bottom of the second wind turbine can be fastened together by means of the first bearing, the connecting rod and the first rotating body.

[0109] In some embodiments, see Figure 2 The first connecting member 3 is arranged in a direction perpendicular to the extension direction of the tower body 1; and / or the second connecting member 4 is arranged in a direction parallel to the extension direction of the tower body 1.

[0110] In some embodiments, the first connecting member 3 may be arranged in a direction perpendicular to the extension direction of the tower body 1 , and the second connecting member 4 may be arranged in any direction different from the direction perpendicular to the extension direction of the tower body 1 .

[0111] It should be noted that the second connector 4 can be arranged in a direction different from the perpendicular direction of the extension direction of the tower body 1, and the second connector 4 can be arranged in a direction different from the parallel direction of the extension direction of the tower body 1. In this case, the first connector 3 and the second connector 4 can be non-perpendicular to each other, and the second connector 4 can support the two first connectors 3 provided at the bottom of two adjacent wind turbines 2 by providing oblique support.

[0112] In some embodiments, the second connecting member 4 can be arranged in a direction parallel to the extension direction of the tower body 1 , and the arrangement direction of the first connecting member 3 can be any direction different from the direction parallel to the extension direction of the tower body 1 .

[0113] It should be noted that the installation direction of the first connector 3 can be different from the parallel direction of the extension direction of the tower body 1, and the installation direction of the first connector 3 can be different from the perpendicular direction of the extension direction of the tower body 1. In this case, the first connector 3 and the second connector 4 do not need to be perpendicular to each other, and the second connector 4 can support the two first connectors 3 installed at the bottom of two adjacent wind turbines 2 by providing oblique support.

[0114] In some embodiments, the first connecting member 3 may be disposed in a direction perpendicular to the extension direction of the tower body 1 , and the second connecting member 4 may be disposed in a direction parallel to the extension direction of the tower body 1 .

[0115] It should be noted that, here, since the first connecting member 3 is arranged in a direction perpendicular to the extension direction of the tower body 1, and the second connecting member 4 is arranged in a direction parallel to the extension direction of the tower body 1, the arrangement direction of the first connecting member 3 is perpendicular to the arrangement direction of the second connecting member 4. In other words, the first connecting member 3 and the second connecting member 4 are perpendicular to each other.

[0116] In the disclosed embodiment, by disposing the first connector 3 in a direction perpendicular to the extension direction of the tower body 1, a balancing force in the direction perpendicular to the extension direction can be provided for the wind turbines 2 stacked along the extension direction of the tower body 1; and / or, by disposing the second connector 4 in a direction parallel to the extension direction of the tower body 1, a supporting force in the extension direction of the tower body 1 can be provided for the wind turbines 2 stacked along the extension direction of the tower body 1. In this way, the connection stability between the wind turbines 2 can be enhanced.

[0117] In some embodiments, the first connecting member 3 includes a connecting disk, a connecting plate, or a connecting rod;

[0118] The second connecting member 4 includes a connecting column or a connecting rod.

[0119] In some embodiments, the first connector 3 may include at least two first connecting rods, which may be cross-arranged at the bottom of the wind turbine 2, and the contact portion between the at least two first connecting rods may be detachably connected. The bottom of the wind turbine 2 may be connected to the contact area between the at least two first connecting rods.

[0120] It should be noted that the above is only an illustrative example of the structure of the first connector 3 and the second connector 4. The specific structure of the first connector 3 and the second connector 4 may not be limited to the types shown above as examples. The structure of the first connector 3 and / or the second connector 4 may be set according to actual application requirements.

[0121] In some embodiments, the first connecting member 3 is detachably connected to the second connecting member 4 .

[0122] It should be noted that the manner of detachable connection between the first connector 3 and the second connector 4 is not limited. For example, the first connector 3 can be threadedly connected to the second connector 4. For example, the first connector 3 and the second connector 4 can be connected by a preset number of fastening screws. For example, the first connector 3 and the second connector 4 can also be connected by a snap connection, a hinge connection, or a rivet connection.

[0123] In the embodiment of the present disclosure, since the first connecting member 3 is detachably connected to the second connecting member 4, when maintenance of the wind turbine 2 is required, the first connecting member 3 at the bottom of the wind turbine 2 and the second connecting member 4 between two adjacent first connecting members 3 can be flexibly removed to facilitate maintenance of the wind turbine 2. This improves the flexibility of maintenance of the wind turbine 2.

[0124] In some embodiments, the number of the second connecting members 4 between the two first connecting members 3 at the bottoms of two adjacent wind turbines 2 is positively correlated with the number of the wind turbines 2 .

[0125] In some embodiments, the number of wind turbines 2 arranged in a stacked manner may be a second predetermined number. For example, the second predetermined number may be 3. The specific number of wind turbines 2 arranged in a stacked manner is not limited here, and the number of wind turbines 2 arranged in a stacked manner may be increased or decreased according to actual needs.

[0126] In some embodiments, two adjacent wind turbines 2 may include a first wind turbine and a second wind turbine stacked on the first wind turbine, and the number of second connectors 4 disposed between the first wind turbine and the second wind turbine is positively correlated with the total number of wind turbines 2. For example, if the total number of wind turbines 2 is two, the number of second connectors 4 disposed between the two first connectors 3 at the bottom of the two adjacent wind turbines 2 may be two. If the total number of wind turbines 2 is five, the number of second connectors 4 disposed between the two first connectors 3 at the bottom of the two adjacent wind turbines 2 may be three.

[0127] In some embodiments, the number of the second connecting members 4 provided between the first wind turbine and the second wind turbine may be the same as the total number of the wind turbines 2 .

[0128] For example, if the total number of wind turbines 2 is 2, the number of second connecting members 4 between the two first connecting members 3 at the bottom of two adjacent wind turbines 2 may be 2. If the total number of wind turbines 2 is 5, the number of second connecting members 4 between the two first connecting members 3 at the bottom of two adjacent wind turbines 2 may be 5.

[0129] In some embodiments, the first connector 3 has a first dimension in a direction parallel to the extension direction of the tower body 1, and the first dimension may be positively correlated with the number of wind turbines 2 arranged in a stacked manner. And / or, the second connector 4 has a second dimension in a direction parallel to the extension direction of the tower body 1, and the second dimension may be positively correlated with the number of wind turbines 2 arranged in a stacked manner. And / or, the tower body 1 has a third dimension in a direction parallel to the extension direction of the tower body 1. The third dimension may be positively correlated with the number of wind turbines 2 arranged in a stacked manner. Here, when the number of wind turbines 2 increases, the mechanical strength of the tower body 1 or the connector can be enhanced by increasing at least one of the first dimension, the second dimension, and the third dimension, thereby increasing the stability of the connection between the wind turbines 2.

[0130] In the embodiment of the present disclosure, since the number of second connectors 4 between the two first connectors 3 at the bottoms of two adjacent wind turbines 2 is positively correlated with the number of wind turbines 2, as the number of wind turbines 2 increases, the connection stability between the two adjacent wind turbines 2 can be increased by the number of second connectors 4. In this way, when the number of wind turbines 2 is large, the connection stability between the large number of wind turbines 2 can be improved.

[0131] In some embodiments, see Figure 6 The first connecting member 3 at the bottom of the wind turbine 2 on the first floor is connected to the top of the tower body 1.

[0132] In some embodiments, the first connector 3 at the bottom of the wind turbine 2 on the first floor can be fixedly connected to the top of the tower body 1. Alternatively, the first connector 3 at the bottom of the wind turbine 2 on the first floor can be detachably connected to the top of the tower body 1. For example, the first connector 3 at the bottom of the wind turbine 2 on the first floor and the top of the tower body 1 can be connected using fastening screws.

[0133] In some embodiments, see Figure 6 The first connector 3 located at the bottom of the wind turbine 2 on the first floor is connected to the top of the tower body 1 through the seventh connector 9. The setting direction of the first connector 3 may be different from the setting direction of the seventh connector 9, and the setting direction of the seventh connector 9 may be different from the extension direction of the tower body 1. Exemplarily, the second angle b between the setting direction of the first connector 3 and the setting direction of the seventh connector 9 may be an acute angle, and the third angle between the setting direction of the seventh connector 9 and the extension direction of the tower body 1 may be an acute angle. That is to say, through the seventh connector 9, an oblique support structure can be formed between the first connector 3 and the tower body 1. In this way, the first connector 3 and the tower body 1 can be firmly connected through the seventh connector 9 to improve the connection stability between the wind turbine 2 on the first floor and the tower body.

[0134] In the embodiment of the present disclosure, the tower body 1 can provide support force for the first connecting member 3 at the bottom of the wind turbine 2 located on the first layer, so that the wind turbine 2 on the first layer and the wind turbine 2 stacked above the wind turbine 2 on the first layer can be firmly connected.

[0135] In some embodiments, the stator coil 224 of each wind turbine 2 is connected to an external circuit respectively.

[0136] It should be noted that each wind turbine 2 is provided with a rotor 21, a stator coil 224, and a rotor connected to the rotor 21. The rotor may be a magnetic component. When the rotor 21 of the wind turbine 2 rotates, the rotor 21 can drive the rotor to rotate relative to the stator coil 224. At this time, the stator coil 224 can generate current based on magnetic induction and output the generated current to an external circuit connected to the stator coil 224.

[0137] In the disclosed embodiment, since the stator coils 224 of each wind turbine 2 are separately connected to an external circuit, each wind turbine 2 can independently transmit electrical energy to the external circuit connected to the stator coils 224 through its own stator coils 224. This improves the independence of each wind turbine 2 during power generation, reduces interference between wind turbines 2 during power generation, and thus improves the reliability of each wind turbine 2 during power generation.

[0138] In some embodiments, see Figure 7 and Figure 8 , wind turbines include:

[0139] The wind wheel 21 includes a rotating shaft 211 and at least two blades 212; a first support plate 215 and a second support plate 217 are formed at both ends of the rotating shaft 211, and each blade 212 is connected to the first support plate 215 and the second support plate 217;

[0140] The power generation module 22 is connected to the rotating shaft 211 and is configured to generate electricity when driven by the wind wheel 21;

[0141] The second rotating body 23 is disposed between the power generation module 22 and the first connecting member 3 at the bottom of the wind turbine. The second rotating body 23 is connected to the first connecting member 3 and the power generation module 22 respectively.

[0142] In some embodiments, the first connector 3 may include a first flange, the second rotator 23 may include a second flange, and the first flange and the second flange may be connected by threads. In this case, the second rotator 23 may be understood as a flange rotating body.

[0143] In some embodiments, see Figure 7and Figure 8 Each blade 212 is connected to the first support plate 215 through the first support member 213 and is connected to the second support plate 217 through the second support member 214.

[0144] In some embodiments, the arrangement direction of the blades 212 may be parallel to the extension direction of the tower body 1. For example, the extension direction of the tower body 1 may be perpendicular to the ground, and in this case, the arrangement direction of the blades 212 may also be perpendicular to the ground.

[0145] In some embodiments, the first end of the rotating shaft 211 can be fixedly connected to the first support plate 215, or the first end of the rotating shaft 211 can be detachably connected to the first support plate 215. The second end of the rotating shaft 211 can be fixedly connected to the second support plate 217, or the second end of the rotating shaft 211 can be detachably connected to the second support plate 217.

[0146] In some embodiments, each blade 212 is detachably connected to the first support plate 215 via the first support member 213, and is detachably connected to the second support plate 217 via the second support member 214. Alternatively, each blade 212 is fixedly connected to the first support plate 215 via the first support member 213, and is fixedly connected to the second support plate 217 via the second support member 214.

[0147] In some embodiments, the first support member 213 can be connected by a first bolt 216 (eg Figure 8 As shown) and the first support plate 215 are detachably connected. And / or, the second support member 214 can be detachably connected to the second support plate 217 by a first bolt 216.

[0148] In some embodiments, the first support plate 215 is located above the second support plate 217. The third connector 5 can be disposed between the first support plate 215 of the first wind turbine and the first connector 3 at the bottom of the second wind turbine, and is respectively connected to the first support plate 215 and the first connector 3. The sixth connector 8 can be disposed between the first support plate 215 and the fourth connector 6 of the third wind turbine, and is respectively connected to the first support plate 215 and the fourth connector 6.

[0149] In the embodiment of the present disclosure, each blade 212 can be firmly mounted on the rotating shaft 211 by a fastening connection between the blade 212 and a first support disk 215 provided on the first end of the rotating shaft 211, and a fastening connection between the blade 212 and a second support disk 217 provided on the second end of the rotating shaft 211, thereby improving the reliability of the blades 212 in the wind wheel 21 during rotation.

[0150] In some embodiments, see Figure 9 , the power generation module 22 includes:

[0151] The housing 222 is provided between the wind wheel 21 and the second rotating body 23. The housing 222 is connected to the second rotating body 23 and is provided with a through hole.

[0152] The stator coil 224 is disposed in the housing 222 and connected to the housing 222;

[0153] The magnetic assembly 225 is disposed in the housing 222 and is connected to the rotating shaft 211 having a through hole therethrough via the second bearing 223 . Driven by the rotating shaft 211 , the magnetic assembly 225 can rotate relative to the stator coil 224 .

[0154] In some embodiments, see Figure 9 The power generation module 22 further includes an end cover 221, which covers the housing 222 and is provided with a through hole for the rotation shaft 211 to pass through. The end cover 221 is connected to the housing 222. For example, the end cover 221 and the housing 222 can be connected by threads. For example, Figure 9 As shown, the end cover 221 and the housing 222 may be connected by a second bolt 228 .

[0155] In some embodiments, the magnetic assembly 225 includes a first magnetic member disposed on a first side of the stator coil 224 and a second magnetic member disposed on a second side of the stator coil 224. The magnetic properties of the first magnetic member and the second magnetic member may be different. For example, the first magnetic member and the second magnetic member may both be magnetic steel.

[0156] In some embodiments, see Figure 9 and Figure 10 The wind power generation device further includes: a third bearing 226, which is arranged between the shell 222 of the power generation module 22 and the second rotor 23, and the third bearing 226 is respectively connected to the shell 222 of the power generation module 22 and the second rotor 23.

[0157] In some embodiments, see Figure 9 and Figure 10 The wind turbine generator further includes a bearing retaining ring 227 disposed between the third bearing 226 and the second rotator 23 and connected to the third bearing 226 and the second rotator 23, respectively. The bearing retaining ring 227 can reduce friction between the third bearing 226 and the second rotator 23, thereby reducing wear on the third bearing 226 and the second rotator 23.

[0158] In the embodiment of the present disclosure, the stator coil 224 is disposed in the housing 222 and the magnetic assembly 225 rotatable relative to the stator coil 224 , so that the stator coil 224 can be triggered to perform magnetic induction and generate current, thereby realizing wind power generation.

[0159] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0160] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A wind power generation device, characterized in that: include: tower body; At least two wind turbines are arranged on the tower body and stacked along the extension direction of the tower body; The rotation axis of each wind turbine is parallel to the extension direction, and the bottom of each wind turbine is connected to a first connecting member; Wherein, the two first connecting members at the bottoms of two adjacent wind turbines are connected by at least two second connecting members, and the setting direction of the second connecting members is different from the setting direction of the first connecting members; The bottom of the wind turbine located on the first floor among the at least two wind turbines is fixedly connected to the tower body and at least one of the first connecting members; the bottom of the wind turbine located on the top floor among the at least two wind turbines is detachably connected to the tower body and at least one of the first connecting members.

2. The wind power generation device according to claim 1, characterized in that: The two adjacent wind turbines include a first wind turbine and a second wind turbine stacked on the first wind turbine; At least two second connecting members are arranged at intervals between the first connecting member at the bottom of the first wind turbine and the first connecting member at the bottom of the second wind turbine, and surround the first wind turbine.

3. The wind power generation device according to claim 2, characterized in that: The wind power generation device further comprises: The third connecting member is connected between the top of the first wind turbine and the first connecting member at the bottom of the second wind turbine.

4. The wind power generation device according to claim 3, characterized in that: The third connecting member includes: a first bearing connected to the top of the first wind turbine; a connecting rod connected to the first connecting member at the bottom of the second wind turbine; The first rotating body is arranged between the first bearing and the connecting rod, and is connected to the first bearing and the connecting rod respectively.

5. The wind power generation device according to any one of claims 1 to 4, characterized in that: The first connecting member is arranged in a direction perpendicular to the extending direction; and / or, The second connecting member is arranged in a direction parallel to the extending direction.

6. The wind power generation device according to any one of claims 1 to 4, characterized in that: The first connecting member includes a connecting disk, a connecting plate or a connecting rod; The second connecting member includes a connecting column or a connecting rod.

7. The wind power generation device according to any one of claims 1 to 4, characterized in that: The first connecting member is detachably connected to the second connecting member.

8. The wind power generation device according to any one of claims 1 to 4, characterized in that: The number of the second connecting members between the two first connecting members at the bottoms of two adjacent wind turbines is positively correlated with the number of the wind turbines.

9. The wind power generation device according to any one of claims 1 to 4, characterized in that: The first connecting member located at the bottom of the wind turbine on the first floor is connected to the top of the tower body.

10. The wind power generation device according to any one of claims 1 to 4, characterized in that: The stator coils of the wind turbines are connected to external circuits respectively.

11. The wind power generation device according to any one of claims 1 to 4, characterized in that: The wind turbine generator comprises: The wind wheel comprises the rotating shaft and at least two blades; a first support disk and a second support disk are formed at both ends of the rotating shaft, and each of the blades is connected to the first support disk and the second support disk; a power generation module connected to the rotating shaft, wherein the power generation module is configured to generate electricity under the drive of the rotating shaft; The second rotating body is arranged between the power generation module and the first connecting member at the bottom of the wind turbine, and the second rotating body is connected to the first connecting member and the power generation module respectively.

12. The wind power generation device according to claim 11, characterized in that: The power generation module comprises: a housing, disposed between the wind wheel and the second rotor, the housing being connected to the second rotor and having a through hole; a stator coil, disposed in the housing and connected to the housing; The magnetic component is arranged in the shell and is connected to the rotating shaft passing through the through hole through a second bearing. Under the drive of the rotating shaft, the magnetic component can rotate relative to the stator coil.

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