Co-rotating wind turbine assembly and wind turbine equipment
By adopting the design of collector and double impeller co-rotation in the wind turbine, a local high-speed area is formed, which solves the problem of low wind energy utilization and achieves improvements in wind energy utilization and wind turbine performance.
Patent Information
- Application Number
- CN202423056789.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-10
AI Technical Summary
The wind energy utilization rate of wind turbines is low.
A co-rotating wind turbine assembly is adopted, including a collector and a double impeller design. The inner diameter of the collector first decreases and then expands in the axial direction. The front impeller is coaxially arranged with the collector, and the rear impeller rotates coaxially with the front impeller. Both of them supply air toward the rear side, forming a local high-speed area to improve the utilization rate of wind energy.
The design of the collector and double impeller significantly improves the wind energy utilization rate and the performance of the wind turbine.
Smart Images

Figure CN223424153U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind turbines, in particular to a co-rotating wind turbine component and wind turbine equipment. Background Art
[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which then drives the rotor to rotate and ultimately outputs alternating current. However, in related technologies, wind turbines have a low wind energy utilization rate. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a co-rotating wind turbine assembly, which aims to improve the utilization rate of wind energy.
[0004] The utility model also provides a wind turbine device.
[0005] According to the first embodiment of the present invention, the co-rotating wind turbine assembly comprises:
[0006] A current collector, wherein the current collector is annularly arranged to form an installation space, wherein the current collector has a front side and a rear side in the axial direction, and an inner diameter of the current collector first decreases and then increases in the axial direction of the current collector;
[0007] a front impeller, the front impeller being disposed in the installation space, the front impeller being coaxially arranged with the collector, the blade tip of the front impeller being adjacent to the inner wall of the collector, so as to form a local high-speed zone between the blade tip of the front impeller and the inner wall of the collector;
[0008] The rear impeller is arranged on the rear side of the front impeller, the rear impeller is coaxially arranged with the collector, the rear impeller rotates coaxially with the front impeller, and the front impeller and the rear impeller both supply air toward the rear side.
[0009] According to the co-rotating wind turbine assembly of the embodiment of the present invention, the performance of the wind turbine can be greatly improved by adding a collector and adopting a dual-impeller co-rotating design. The front impeller is set in the installation space of the collector. Since the inner diameter of the collector first decreases and then expands in the axial direction of the collector, the inner wall of the collector is adjacent to the tip of the front impeller, thereby forming a local high-speed area between the two. When the front impeller rotates, the wind speed here is higher, which is conducive to improving the utilization rate of wind energy. At the same time, the rear impeller is set on the rear side of the front impeller, and the rear impeller and the front impeller adopt a co-rotating design. The wind passes through the front impeller and then the rear impeller. The front impeller and the rear impeller both send air toward the rear side to improve the utilization rate of wind energy.
[0010] According to one embodiment of the present invention, the minimum inner diameter position of the collector is defined as point A, the tip position of the front impeller is defined as point B, the axial projection length of the collector is defined as L1, and the axial projection distance between points A and B is defined as L2. When point B is in front of point A, L2 is a negative value, wherein the value range of L2 / L1 is -0.2 to 0.25.
[0011] According to one embodiment of the present invention, the value range of L2 / L1 is -0.20 to 0.20.
[0012] According to an embodiment of the present invention, the projection distance between the blades of the front impeller and the blades of the rear impeller in the axial direction is defined as L3, and the value range of L3 / L1 is 0.4 to 1.6.
[0013] According to an embodiment of the present invention, the value range of L3 / L1 is 0.4 to 1.2.
[0014] According to one embodiment of the present invention, the front impeller is provided with a plurality of front blades at intervals in the circumferential direction, and the rear impeller is provided with a plurality of rear blades at intervals in the circumferential direction, the front blades include a first leading edge and a first trailing edge arranged in sequence in a first direction, and the rear blades include a second leading edge and a second trailing edge arranged in sequence in the first direction, the first direction is clockwise or counterclockwise, defined on adjacent front blades and rear blades, the angle formed by the first leading edge and the second leading edge is the circumferential deflection angle, and the value range of the circumferential deflection angle is 5° to 40°.
[0015] According to an embodiment of the present invention, the circumferential deflection angle ranges from 10° to 30°.
[0016] According to one embodiment of the present invention, the current collector includes:
[0017] a body, the body being annularly arranged to form the installation space, the body having a front side and a rear side in the axial direction, and an inner diameter of the body first decreasing and then increasing in the axial direction of the body;
[0018] A flange is connected to the rear side of the body and extends in a direction away from the installation space.
[0019] According to an embodiment of the present invention, the flange is arranged to be inclined toward the front side of the body.
[0020] The wind turbine device according to the embodiment of the second aspect of the present invention includes a machine body and the above-mentioned counter-rotating wind turbine assembly, wherein the counter-rotating wind turbine assembly is arranged on the machine body.
[0021] The wind turbine device according to the embodiment of the present invention includes the above-mentioned co-rotating wind turbine assembly, and therefore has all the technical effects of the above-mentioned co-rotating wind turbine assembly, which will not be described in detail here.
[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 It is a structural schematic diagram of a co-rotating wind turbine assembly provided by an embodiment of the present utility model.
[0025] Figure 2 It is a side structural schematic diagram of a co-rotating wind turbine assembly provided by an embodiment of the present utility model.
[0026] Figure 3 It is a schematic structural diagram of the front impeller and the rear impeller provided in an embodiment of the present utility model.
[0027] Figure 4 This is one of the side structural schematic diagrams of the co-rotating wind turbine component part provided by the embodiment of the present utility model.
[0028] Figure 5 This is the second side structural schematic diagram of the co-rotating wind turbine component part provided by the embodiment of the present utility model.
[0029] Figure 6 It is a front view structural schematic diagram of a co-rotating wind turbine assembly provided by an embodiment of the present utility model.
[0030] Figure 7 This is the third side structural schematic diagram of the co-rotating wind turbine component part provided by the embodiment of the present utility model.
[0031] Figure 8 It is a schematic top view of the front impeller and the rear impeller provided in an embodiment of the utility model.
[0032] Figure 9 This is a schematic diagram of the effect of the co-rotating wind turbine assembly L2 / L1 on torque provided by an embodiment of the present invention.
[0033] Figure 10This is a schematic diagram of the effect of the co-rotating wind turbine assembly L3 / L1 on torque provided by an embodiment of the present invention.
[0034] Figure 11 This is a schematic diagram of the effect of the circumferential deflection angle of a co-rotating wind turbine assembly on torque provided by an embodiment of the present invention.
[0035] Reference numerals:
[0036] 1. Collector; 11. Main body; 12. Flange; 111. Installation space; 2. Front impeller; 21. First leading edge; 22. First trailing edge; 3. Rear impeller; 31. Second leading edge; 32. Second trailing edge; 4. Local high-speed area. DETAILED DESCRIPTION
[0037] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.
[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.
[0040] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.
[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0042] A wind turbine is an electrical device that converts wind energy into mechanical work, which then drives the rotor to rotate, ultimately outputting alternating current. A wind turbine generally includes components such as a rotor, a generator (including its components), a stabiliser (tail), a tower, a speed limiter, and an energy storage device. In related technologies, wind turbines are not equipped with a current collector, resulting in low wind energy utilization.
[0043] In response to the above problems, the present application proposes a co-rotating wind turbine assembly.
[0044] Please refer to Figures 1 to 4 as well as Figure 7 According to the embodiment of the first aspect of the present invention, the co-rotating wind turbine assembly includes a collector 1, a front impeller 2 and a rear impeller 3. The collector 1 is formed in a ring with an installation space 111, and the collector 1 is defined to have a front side and a rear side in the axial direction. The inner diameter of the collector 1 first decreases and then expands in the axial direction of the collector 1; the front impeller 2 is arranged in the installation space 111, the front impeller 2 is coaxially arranged with the collector 1, and the tip of the front impeller 2 is adjacent to the inner wall of the collector 1 to form a local high-speed zone 4 between the tip of the front impeller 2 and the inner wall of the collector 1; the rear impeller 3 is arranged on the rear side of the front impeller 2, the rear impeller 3 is coaxially arranged with the collector 1, and the rear impeller 3 rotates coaxially with the front impeller 2, and both the front impeller 2 and the rear impeller 3 supply air toward the rear side.
[0045] According to the co-rotating wind turbine assembly of the embodiment of the present invention, the performance of the wind turbine can be greatly improved by adding a collector 1 and adopting a dual-impeller co-rotating design. The front impeller 2 is arranged in the installation space 111 of the collector 1. Since the inner diameter of the collector 1 first decreases and then expands in the axial direction of the collector 1, the inner wall of the collector 1 is adjacent to the tip of the front impeller 2, thereby forming a local high-speed area 4 between the two. When the front impeller 2 rotates, the wind speed here is higher, which is conducive to improving the utilization rate of wind energy. At the same time, the rear impeller 3 is arranged on the rear side of the front impeller 2, and the rear impeller 3 and the front impeller 2 adopt a co-rotating design. The wind passes through the front impeller 2 and then passes through the rear impeller 3. The front impeller 2 and the rear impeller 3 both send wind toward the rear side to improve the utilization rate of wind energy.
[0046] It can be understood that the collector 1 has a circular ring structure so as to collect the wind in the installation space 111, which can effectively improve the utilization rate of wind energy. It should be noted that the axial direction of the collector 1 is parallel to the central axis of the collector 1. The front and rear sides in the axial direction refer to the relative positions of two points, not to a specific position of the collector 1, that is, the front side of the collector 1 is the air inlet side, and the rear side of the collector 1 is the air outlet side. For the two components, it can also be understood that the component upstream of the air flow is the front side, and the component downstream of the air flow is the rear side. By setting the inner diameter of the collector 1 to first decrease and then expand in the axial direction of the collector 1, when the front side of the collector 1 is filled with wind, the air flow is guided to the front impeller 2 along the inner wall of the collector 1, and the wind energy is more easily utilized. The air flow flows along the inner wall of the collector 1, passes through the local high-speed zone 4, and the air flow passes through the co-rotating wind turbine assembly more quickly, so that the wind energy passing through the wind turbine equipment is greatly improved.
[0047] For example, the tip of the front impeller 2 can correspond to the minimum inner diameter of the collector 1, which is conducive to increasing the wind speed in the local high-speed zone 4. The rear impeller 3 can be arranged inside or outside the installation space 111, or part of the rear impeller 3 can be located inside the installation space 111 and the other part can be located outside the installation space 111, without limitation. Optionally, the front impeller 2 and the rear impeller 3 are equal in size.
[0048] In this embodiment, the front impeller 2 and the rear impeller 3 are coaxially arranged and rotate coaxially. They can be connected to the same rotating shaft to rotate synchronously. For example, the front impeller 2 and the rear impeller 3 can both rotate clockwise or counterclockwise. This co-rotating design provides a simple structure and facilitates installation. It should be noted that the front impeller 2 and the rear impeller 3 rotate coaxially, and both deliver air toward the rear.
[0049] like Figure 5 and Figure 9As shown, according to one embodiment of the present invention, the minimum inner diameter position of the collector 1 is defined as point A, the tip position of the front impeller 2 is defined as point B, the axial projection length of the collector 1 is L1, and the axial projection distance between points A and B is L2. When point B is in front of point A, L2 is a negative value, wherein the value range of L2 / L1 is -0.2 to 0.25.
[0050] As can be understood, the collector 1 has a front end face and a rear end face facing each other, and the axial distance between the front end face and the rear end face is L1, which is the length of the collector 1. The length of the collector 1 affects the installation of the front impeller 2 and the rear impeller 3. When the collector 1 is longer, that is, L1 is longer, its installation space 111 is larger, and the front impeller 2 and the rear impeller 3 can both be installed in the installation space 111. By setting the length of L1, after the front impeller 2 and the rear impeller 3 are installed, the tip of the front impeller 2 can correspond to the minimum inner diameter position of the collector 1, that is, point B can correspond to point A, so that the tip of the front impeller 2 is closer to the inner wall of the collector 1, which is conducive to increasing the wind speed in the local high-speed zone 4. Of course, within a certain installation error, or for ease of installation, point B can correspond to the vicinity of point A, so that the value range of L2 / L1 is -0.2 to 0.25, which has little effect on the wind speed in the local high-speed zone 4. When point B is directly opposite point A, L2 is equal to 0, and the value of L2 / L1 is 0. When point B is located in front of point A, L2 is a negative value, and the value of L2 / L1 is also a negative value, such as -0.2. When point B is located behind point A, the opposite is true, and the value of L2 / L1 is a positive value, such as 0.25. The specific adjustment is based on the length of the collector 1 and the installation position of the front impeller 2.
[0051] According to one embodiment of the present invention, the value range of L2 / L1 is -0.20 to 0.20. For example, if point B is located in front of point A and L2 is equal to 0.2L1, the value of L2 / L1 is -0.2, and the front impeller 2 is installed closer to the front side of the collector 1. On the contrary, if point B is located behind point A and L2 is equal to 0.2L1, the value of L2 / L1 is 0.2, and the front impeller 2 is installed closer to the rear side of the collector 1 compared with the former. The installation position of the front impeller 2 can be adjusted along the axial direction of the collector 1 within this area to ensure the formation of the local high-speed zone 4, improve the wind energy utilization rate, and have little impact on wind energy utilization.
[0052] like Figure 5 and Figure 10 As shown, according to one embodiment of the present invention, the projection distance between the blades of the front impeller 2 and the blades of the rear impeller 3 in the axial direction is defined as L3, and the value range of L3 / L1 is 0.4 to 1.6.
[0053] It can be understood that L3 is the installation distance between the rear impeller 3 and the front impeller 2. The farther the two are installed, the longer L3 is, and vice versa. If the front impeller 2 and the rear impeller 3 rotate synchronously, they will be relatively still when they rotate synchronously. When the airflow passes through the front impeller 2, Figure 7 As shown, under the action of potential flow, the front impeller 2 produces interference effect on the rear impeller 3. On the contrary, as shown in Figure 8 As shown, the rear impeller 3 also has a blocking effect on the front impeller 2, that is, the front impeller 2 and the rear impeller 3 affect each other. To this end, by setting the value of L3 / L1 to reduce the mutual influence between the front impeller 2 and the rear impeller 3, the loss of the front impeller 2 is reduced, and the work capacity of the rear impeller 3 can be effectively improved. For example, the installation distance between the rear impeller 3 and the front impeller 2 can be controlled according to the length of L1 to adjust the value of L3 / L1, reduce the mutual influence between the front impeller 2 and the rear impeller 3, and improve the torque of the wind turbine assembly.
[0054] According to one embodiment of the present invention, the value range of L3 / L1 is 0.4 to 1.2. Figure 10 As shown, in this embodiment, when the value of L3 / L1 is 0.6, the torque of the wind turbine component is the largest, and between 0.4 and 1.2, the torque is maintained at a high level.
[0055] like Figure 6 As shown, according to one embodiment of the present invention, the front impeller 2 is provided with a plurality of front blades at intervals in the circumferential direction, and the rear impeller 3 is provided with a plurality of rear blades at intervals in the circumferential direction, the front blades include a first leading edge 21 and a first trailing edge 22 arranged in sequence in the first direction, and the rear blades include a second leading edge 31 and a second trailing edge 32 arranged in sequence in the first direction, the first direction is clockwise or counterclockwise, defined on adjacent front blades and rear blades, the angle formed by the first leading edge 21 and the second leading edge 31 is the circumferential deflection angle, and the value range of the circumferential deflection angle is 5° to 40°.
[0056] It is understandable that after the front impeller 2 and the rear impeller 3 are fixedly installed, the angle formed by the front blades and the rear blades is a fixed value. For example, the front impeller 2 is provided with three front blades and the rear impeller 3 is provided with three rear blades. When the front blades and the rear blades overlap front to back, the circumferential deflection angle is 0°. Taking the example of the front impeller 2 and the rear impeller 3 both having three blades, when the front blade is located in the middle of the two rear blades, the angle formed by the front blade and the rear blade is 60°. It should be noted that the angle formed by the front blade and the rear blade is the angle formed by the corresponding positions of the two. For example, the angle formed by the first leading edge 21 of the front blade and the second leading edge 31 of the rear blade is the circumferential deflection angle, and is not the angle formed by the first leading edge 21 of the front blade and the second trailing edge 32 of the rear blade. It can be understood that the airflow passing through the front impeller 2 and the rear impeller 3 will form corresponding low-speed areas. Controlling the circumferential deflection angle within 5° to 40° can effectively stagger the mutual influence of the low-speed areas of the front impeller 2 and the rear impeller 3, thereby reducing the mutual influence of the front impeller 2 and the rear impeller 3 and improving the torque of the wind turbine assembly.
[0057] According to one embodiment of the present invention, the circumferential deflection angle ranges from 10° to 30°. Figure 11 As shown, the circumferential deflection angle is represented by TH. When the circumferential deflection angle is 20°, the torque of the wind turbine component is the largest. Between 10° and 30°, the torque remains at a high level.
[0058] Please refer to Figure 4 and Figure 7 According to one embodiment of the present invention, the collector 1 includes a body 11 and a flange 12. The body 11 is provided with an installation space 111. The body 11 has a front side and a rear side in the axial direction. The inner diameter of the body 11 first decreases and then expands in the axial direction of the body 11; the flange 12 is provided on the rear side of the body 11 and extends in a direction away from the installation space 111.
[0059] As can be understood, the body 11 is annular and is used to form an installation space 111. The flange 12 is arranged around the rear side of the body 11. When the airflow flows out from the rear side of the collector 1, the flange 12 acts as a baffle, forming a vortex at the flange 12, thereby forming a low-pressure area. The flange 12 extends in a direction away from the installation space 111, so that the low-pressure area has a suction effect on the airflow discharged from the rear side of the collector 1, thereby improving the utilization rate of wind energy. The body 11 and the flange 12 can be an integrally formed structure, or they can be connected by welding, bonding, clamping, or threaded connection, etc., which is not limited here.
[0060] According to one embodiment of the present invention, the flange 12 is tilted toward the front side of the body 11. This expands the low-pressure area, facilitates the suction of strong radial cross-flow, and further improves the utilization rate of wind energy.
[0061] The wind turbine equipment according to the embodiment of the second aspect of the present utility model includes a machine body and the above-mentioned counter-rotating wind turbine assembly, and the counter-rotating wind turbine assembly is arranged on the machine body.
[0062] The wind turbine device according to the embodiment of the present invention includes the above-mentioned co-rotating wind turbine assembly, and therefore has all the technical effects of the above-mentioned co-rotating wind turbine assembly, which will not be described in detail here.
[0063] Finally, it should be noted that the above embodiments are intended only to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.
Claims
1. A co-rotating wind turbine assembly, characterized in that: include: A current collector, wherein the current collector is annularly arranged to form an installation space, wherein the current collector has a front side and a rear side in the axial direction, and an inner diameter of the current collector first decreases and then increases in the axial direction of the current collector; a front impeller, the front impeller being disposed in the installation space, the front impeller being coaxially arranged with the collector, the blade tip of the front impeller being adjacent to the inner wall of the collector, so as to form a local high-speed zone between the blade tip of the front impeller and the inner wall of the collector; A rear impeller is provided on the rear side of the front impeller, the rear impeller is coaxially arranged with the collector, the rear impeller rotates coaxially with the front impeller, and both the front impeller and the rear impeller supply air toward the rear side.
2. The co-rotating wind turbine assembly according to claim 1, characterized in that: The minimum inner diameter position of the collector is defined as point A, the tip position of the front impeller is defined as point B, the axial projection length of the collector is defined as L1, and the axial projection distance between points A and B is defined as L2. When point B is in front of point A, L2 is a negative value, wherein the value range of L2 / L1 is -0.2 to 0.
25.
3. The co-rotating wind turbine assembly according to claim 2, characterized in that: The value range of L2 / L1 is -0.20 to 0.
20.
4. The co-rotating wind turbine assembly according to claim 2, characterized in that: The projection distance between the blades of the front impeller and the blades of the rear impeller in the axial direction is defined as L3, and the value range of L3 / L1 is 0.4 to 1.
6.
5. The co-rotating wind turbine assembly according to claim 4, characterized in that: The value range of L3 / L1 is 0.4 to 1.
2.
6. The co-rotating wind turbine assembly according to any one of claims 1 to 5, characterized in that: The front impeller is provided with a plurality of front blades at intervals in the circumferential direction, and the rear impeller is provided with a plurality of rear blades at intervals in the circumferential direction, the front blades include a first leading edge and a first trailing edge arranged in sequence in a first direction, and the rear blades include a second leading edge and a second trailing edge arranged in sequence in the first direction, the first direction is clockwise or counterclockwise, and is defined on adjacent front blades and rear blades, the angle formed by the first leading edge and the second leading edge is the circumferential deflection angle, and the value range of the circumferential deflection angle is 5° to 40°.
7. The co-rotating wind turbine assembly according to claim 6, characterized in that: The circumferential deflection angle ranges from 10° to 30°.
8. The co-rotating wind turbine assembly according to any one of claims 1 to 5, characterized in that: The current collector comprises: a body, the body being annularly arranged to form the installation space, the body having a front side and a rear side in the axial direction, and an inner diameter of the body first decreasing and then increasing in the axial direction of the body; A flange is connected to the rear side of the body and extends in a direction away from the installation space.
9. The co-rotating wind turbine assembly according to claim 8, characterized in that: The flange is arranged to be inclined toward the front side of the body.
10. A wind turbine device, characterized in that: The wind turbine equipment includes a machine body and a co-rotating wind turbine assembly according to any one of claims 1 to 9, wherein the co-rotating wind turbine assembly is arranged on the machine body.