Wind gathering structure of wind power generation device and wind power generation device
By designing adaptive adjustment of the guide channel and return air damper in the wind-gathering structure, the problem of strong dependence on wind direction in traditional wind power generation devices is solved, realizing the efficient utilization and conversion of wind energy, especially the conversion of horizontal wind into vertical wind, which improves the efficiency of wind power generation.
Patent Information
- Application Number
- CN202520263199.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Traditional wind power generation devices are highly dependent on wind direction and have difficulty effectively capturing changing wind directions, resulting in low wind energy utilization efficiency.
Design a wind-gathering structure, including a wind-gathering body and a return air baffle. Through the cooperation of the guide channel and the tail fin, the rotation angle of the return air baffle is adaptively adjusted so that the incoming wind direction is always aligned with the air outlet, thereby realizing the effective conversion and utilization of wind energy.
It improves the efficiency of wind energy utilization, adapts to different wind direction changes, and enhances the wind-catching ability of wind power generation devices. In particular, it improves wind speed and wind energy conversion efficiency by converting horizontal wind into vertical wind.
Smart Images
Figure CN223923179U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of wind power generation technology, and particularly relates to a wind-gathering structure and a wind power generation device. Background Technology
[0002] With the increasing global demand for renewable energy, wind power, as a clean and efficient energy source, plays an important role in optimizing the energy structure. However, traditional wind power generation devices are highly dependent on wind direction in practical applications, making it difficult to effectively capture changing wind directions, resulting in low wind energy utilization efficiency. Utility Model Content
[0003] This application aims to address the technical problem that existing wind power generation devices are highly dependent on wind direction in practical applications, making it difficult to effectively capture changing wind directions and resulting in low wind energy utilization efficiency.
[0004] This application provides a wind-collecting structure for a wind power generation device, comprising:
[0005] The wind collector has an internal wind-gathering cavity, and an air outlet is provided at one end of the wind-gathering cavity in a first direction. The wind collector is provided with a plurality of guide parts at intervals along the first direction. The plurality of guide parts are arranged around the wind-gathering cavity, and a guide channel connecting the outside and the wind-gathering cavity is formed between every two adjacent guide parts. The guide channel guides the air entering from the outside into the wind-gathering cavity and flows out from the air outlet in the first direction.
[0006] A return air baffle is rotatably disposed on one side of the air collector. The return air baffle blocks a portion of the circumferential direction of the air guide channel from the outside. A tail fin is connected to the side of the return air baffle away from the air collector, and the tail fin extends in a direction away from the air collector.
[0007] According to one embodiment of this application, the sum of the external air inlet areas of the guide channel is greater than the cross-sectional area of the air outlet cut off by the plane perpendicular to the first direction.
[0008] According to one embodiment of this application, the return air baffle is connected to a first air-gathering plate and a second air-gathering plate on its two edges parallel to the first direction; an air-gathering channel communicating with the guide channel is formed between the first air-gathering plate and the second air-gathering plate, and the width of the air-gathering channel decreases in the direction toward the guide channel.
[0009] According to one embodiment of this application, the projected area of the air outlet on a first reference plane perpendicular to the first direction is defined as A1;
[0010] The projected area of the end of the air-gathering channel away from the guide channel on the second reference plane perpendicular to the second direction is defined as A2;
[0011] Wherein, the projected area A1 is smaller than the projected area A2, and the first direction is perpendicular to the second direction.
[0012] According to one embodiment of this application, the cross-section obtained by cutting the guide portion through the third reference surface in the first direction is an arc or a reverse parabola.
[0013] According to one embodiment of this application, the spacing between any two adjacent air guides in the first direction increases sequentially from the direction closer to the air outlet to the direction farther from the air outlet, or the spacing between any two adjacent air guides in the first direction is equal.
[0014] According to one embodiment of this application, the flow guide is an annular closed structure surrounding the air-gathering cavity, and is cut by a plane perpendicular to the first direction to obtain a cross-section in the shape of a circular ring or a polygonal ring.
[0015] According to one embodiment of this application, the wind concentrator includes a plurality of support columns, which are disposed in the plurality of flow guides parallel to the first direction.
[0016] Secondly, this application provides a wind power generation device, which includes: a wind turbine generator and a wind gathering structure as described in any of the above embodiments; the wind turbine generator is disposed in the wind gathering cavity and connected to the wind gathering structure along the first direction.
[0017] According to one embodiment of this application, the wind turbine is a horizontal axis wind turbine.
[0018] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects:
[0019] The tail fin of the return air damper in this application adaptively adjusts the rotation angle of the return air damper according to the wind direction, so that the opening is always aligned with the direction of the incoming wind, and the wind gatherer converts the horizontal incoming wind into the vertical direction and outputs it from the air outlet, which greatly improves the wind energy utilization efficiency.
[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0022] Figure 1 This is a schematic diagram of the wind-gathering structure of the wind power generation device provided in the embodiments of this application;
[0023] Figure 2 yes Figure 1 A magnified view of part A in the middle;
[0024] Figure 3 This is a schematic diagram of the return air damper of the wind power generation device provided in the embodiments of this application;
[0025] Figure 4 This is a schematic diagram of the return air damper and wind collector of the wind power generation device provided in the embodiments of this application;
[0026] Figure 5 This is a cross-sectional view of the return air damper and wind collector of the wind power generation device provided in the embodiments of this application;
[0027] Figure 6 This is a schematic diagram of the structure of the wind power generation device provided in the embodiments of this application.
[0028] Figure label:
[0029] 10. Wind-gathering structure;
[0030] 100. Wind-gathering body;
[0031] 110. Air gathering chamber; 111. Air outlet; 120. Air guide section; 121. Air guide channel; 130. Support column; 210. Return air baffle; 211. Opening; 220. Tail fin; 230. First air gathering plate; 240. Second air gathering plate; 250. Air gathering channel;
[0032] 20. Wind turbine generator. Detailed Implementation
[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0034] The following is for reference. Figures 1-6 The wind-gathering structure 10 and the wind power generation device according to embodiments of this application are described.
[0035] like Figures 1-3 As shown, the wind-gathering structure 10 of the wind power generation device includes: a wind-gathering body 100 and a return air damper 210.
[0036] The air-gathering body 100 is provided with an air-gathering cavity 110, and an air outlet 111 is provided at one end of the air-gathering cavity 110 in a first direction (shown as the top in the figure). The air-gathering body 100 is also provided with a plurality of guide sections 120 at intervals along the first direction, and the plurality of guide sections 120 are arranged around the air-gathering cavity 110. A guide channel 121 is formed between every two adjacent guide sections 120, connecting the outside to the air-gathering cavity 110. The guide channel 121 transforms the air entering from the outside in a second direction into air entering the air-gathering cavity 110 in the first direction and flowing out from the air outlet 111. The first direction can be a vertical direction or other possible directions, and the second direction is perpendicular to the first direction.
[0037] In some embodiments, the guide portion 120 is an annular closed structure formed by a curved panel surrounding the air-gathering cavity 110, and its cross-section is obtained by a plane perpendicular to the first direction, resulting in a circular or polygonal annular shape. A plane in the first direction is defined as a reference plane, and the cross-section obtained by the reference plane of the guide portion 120 is two symmetrical circular arcs or a reverse parabola (see...). Figure 5 A parabola in reverse can be the symmetrical figure of a parabola in the second direction.
[0038] In a specific implementation, if the guide section 120 is cut into an annular cross-section by a plane perpendicular to the first direction, the return air baffle 210 can rotate relative to the air collector 100 and is located on one side of the air collector 100. Specifically, the return air baffle 210 can be freely rotatably mounted on the outside of the air collector 100 via bearings or a slewing bearing mechanism, and the rotation axis of the return air baffle 210 coincides with the central axis of the air collector 100. If the guide section 120 is cut into a polygonal annular cross-section (such as hexagonal or octagonal) by a plane perpendicular to the first direction, the return air baffle 210 can be fixedly connected to the air collector 100, and the air collector structure 10 as a whole can rotate around its central axis. Specifically, the air collector structure 10 can be mounted on a base (not shown) via bearings or a slewing bearing mechanism.
[0039] In other embodiments, the spacing between any two adjacent air guides 120 in the first direction increases sequentially from the direction closer to the air outlet 111 to the direction farther from the air outlet 111, or the spacing between any two adjacent air guides 120 in the first direction is equal.
[0040] Each of the aforementioned guide channels 121 is connected to the air-gathering cavity 110, so that when air flows in from the second direction, it is guided through the guide channels 121 to the air-gathering cavity 110 until it flows out from the air outlet 111.
[0041] One side of the return air baffle 210 has an opening 211 communicating with the plurality of guide channels 121. The side of the return air baffle 210 facing away from the wind collector 100 has a tail fin 220 extending away from the opening 211. Since the guide section 120 is arranged circumferentially around the wind collector 110, air entering the wind collector from one side of the guide channel 121 may flow out from the other side. Therefore, a return air baffle 210 is provided on one side of the guide channel 121 to prevent internal air from flowing outward from that side of the guide channel 121. That is, the return air baffle 210 closes a portion of the circumferential direction of the guide channel 121 from the outside, so that the air in the wind collector 110, after reaching the return air baffle 210 via the guide section 120, is stopped by the return air baffle 210 and returns to the wind collector 110, achieving a better wind collection effect.
[0042] The following example uses the first direction as the vertical direction and the second direction as the horizontal direction to illustrate this embodiment.
[0043] When the wind direction changes, the tail fin 220 is deflected by the wind force, which drives the return air baffle 210 to rotate, so that the opening 211 is always aligned with the direction of the incoming wind. The wind flows from the opening 211 through the guide channel 121 to the wind gathering chamber 110. In this process, part of the wind is guided along the guide channel 121 that extends towards the air outlet 111 and becomes vertical wind. The other part of the wind continues to flow horizontally until it is blocked by the inner wall of the return air baffle 210 and flows back. Then it is guided through the guide channel 121 to the air outlet 111 and becomes vertical wind.
[0044] In summary, the tail fin 220 of the return air damper 210 in this embodiment adaptively adjusts the rotation angle of the return air damper 210 according to the wind direction, so that the opening 211 is always aligned with the direction of the incoming wind, and the wind concentrator 100 converts the horizontal incoming wind into a vertical direction and outputs it from the air outlet 111, which greatly improves the wind energy utilization efficiency.
[0045] like Figure 4 As shown, in some embodiments, the wind concentrator 100 includes a plurality of support columns 130, each support column 130 being disposed in the plurality of guide sections 120 along a direction parallel to the first direction.
[0046] In this embodiment, multiple guide sections 120 are arranged in layers along a first direction (e.g., vertical direction) and fixed by support columns 130. This modular design enhances the flexibility of the structure and makes it easy to apply in wind power generation devices of different heights and sizes.
[0047] like Figure 4 and Figure 5As shown, in some embodiments, the sum of the external air inlet areas of the guide channel 121 is greater than the cross-sectional area of the air outlet 111 taken by the plane perpendicular to the first direction. Specifically, the return air baffle 210 is also provided with a first air concentrator 230 and a second air concentrator 240, and an air concentrator duct 250 is formed between the first air concentrator 230 and the second air concentrator 240. The air concentrator duct 250 communicates with the opening 211, and the width of the air concentrator duct 250 decreases in the direction towards the opening 211.
[0048] In this embodiment, according to the continuity equation in fluid mechanics, the fluid flow rate remains constant during the flow process. As the width of the air-gathering duct 250 gradually decreases, the horizontal air velocity must increase in order to maintain a constant flow rate. Therefore, the design of the air-gathering duct 250 having a reduced width towards the opening 211 allows it to be captured more efficiently by the air-gathering body 100.
[0049] In some embodiments, the air outlet 111 has a first reference surface perpendicular to the first direction, and the projected area of the air outlet 111 along the first direction on the second reference surface is defined as A1;
[0050] The end of the air-gathering duct 250 away from the opening 211 has a second reference surface perpendicular to the second direction, and the projected area of the air-gathering duct 250 along the second direction on the second reference surface is defined as A2.
[0051] The projected area A1 is smaller than the projected area A2, and the first direction is perpendicular to the second direction.
[0052] In this embodiment, according to the continuity equation in fluid mechanics, the projected area A1 is smaller than the projected area A2. In order to ensure that the flow rate remains constant, the wind speed at the outlet 111 must be greater than the wind speed at the opening 211, resulting in a wind-gathering effect. That is, the larger the height-to-diameter ratio of the wind-gathering body 100 and the larger the first wind-gathering plate 230 and the second wind-gathering plate 240, the more obvious the wind-gathering effect.
[0053] In actual operation, the tail fin 220 is positioned between the first wind-gathering plate 230 and the second wind-gathering plate 240, and the tail fin 220 is perpendicular to the return air baffle 210. This design ensures that the tail fin 220 can quickly sense the wind direction and adjust the position of the entire return air baffle 210, so that the opening 211 is always aligned with the direction of the incoming wind, thereby improving the wind gathering efficiency.
[0054] like Figure 6 As shown, this application also proposes a wind power generation device, including: a wind turbine generator 20 and a wind gathering structure 10 as described in any of the above embodiments.
[0055] The wind turbine generator 20 is disposed within the wind-gathering cavity 110 and connected to the wind-gathering structure 10 along the first direction. In this embodiment, the wind power generation end of the wind turbine generator 20 is positioned close to the air outlet 111, directly utilizing the high-speed airflow accelerated by the wind-gathering cavity 110 to more efficiently convert wind energy into electrical energy.
[0056] It should be noted that vertical axis wind turbines have advantages such as strong self-starting capability, simple structure for easy maintenance, strong adaptability, and no need for yaw devices, making them increasingly popular among researchers. However, the power generation efficiency of vertical axis wind turbines has always been lower than that of horizontal axis wind turbines.
[0057] The wind power generation device of this application adopts a horizontal axis wind turbine 20, which is then verticalized. Horizontal wind is converted into vertical wind through a wind collector 100, and the wind speed is increased due to the larger height-to-diameter ratio of the wind collector 100. This application retains the high efficiency of the horizontal axis wind turbine while making the structure relatively simple and easy to maintain. The tail fin 220 adaptively adjusts the rotation angle of the return air baffle 210 according to the wind direction, so that the opening 211 is always aligned with the incoming wind direction. Therefore, it does not have high requirements for wind direction, and the wind speed for vertical work is greater than the wind speed flowing in from the horizontal direction. It is suitable for widespread use in wind power generation under both weak and strong wind conditions.
[0058] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0059] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0060] In the description of this application, "first feature" and "second feature" may include one or more of the features.
[0061] In the description of this application, "multiple" means two or more.
[0062] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.
[0063] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.
[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A wind concentrating structure of a wind power generator, characterized by comprising: Comprising: A wind gathering body, the wind gathering body is internally provided with a wind gathering cavity, one end of the wind gathering cavity in a first direction is provided with an air outlet; a plurality of flow guide portions are arranged at intervals along the first direction of the wind gathering body, the plurality of flow guide portions are arranged around the wind gathering cavity, and a flow guide channel is formed between every two adjacent flow guide portions, the flow guide channel guides the wind from the outside into the wind gathering cavity and flows out from the air outlet along the first direction; A return air baffle is rotatably arranged on one side of the wind gathering body, the return air baffle stops a part of the circumference of the flow guide channel from the outside, and a tail plate is connected to the side of the return air baffle away from the wind gathering body, the tail plate extends in the direction away from the wind gathering body.
2. The wind concentrating structure according to claim 1, wherein The sum of the external air inlet areas of the flow guide channels is greater than the cross-sectional area of the air outlet taken by a plane perpendicular to the first direction.
3. The wind concentrating structure according to claim 1, wherein The two edges of the return air baffle parallel to the first direction are respectively connected with a first wind gathering plate and a second wind gathering plate; a wind gathering channel is formed between the first wind gathering plate and the second wind gathering plate, and the width of the wind gathering channel decreases towards the direction of the flow guide channel.
4. The wind gathering structure according to claim 3, wherein: The projection area of the air outlet on a first reference plane perpendicular to the first direction is defined as A1; The projection area of the end of the wind gathering channel away from the flow guide channel on a second reference plane perpendicular to the second direction is defined as A2; Wherein, the projection area A1 is less than the projection area A2, and the first direction is perpendicular to the second direction.
5. The wind gathering structure according to claim 1, wherein: The cross section of the flow guide portion taken by a third reference plane passing through the first direction is in the shape of a circular arc or an inverted parabola.
6. The wind concentrating structure according to claim 1, wherein The spacing between every two adjacent flow guide portions in the first direction increases successively from the direction close to the air outlet to the direction away from the air outlet, or the spacing between every two adjacent flow guide portions in the first direction is equal.
7. The wind concentrating structure of claim 1, wherein The flow guide portion is a ring-shaped closed structure around the wind gathering cavity, and the cross section taken by a plane perpendicular to the first direction is in the shape of a circular ring or a polygonal ring.
8. The wind gathering structure according to any one of claims 1-7, wherein: The wind gathering body comprises a plurality of support columns, the support columns are arranged through the plurality of flow guide portions along a direction parallel to the first direction.
9. A wind power plant, characterized in that Comprising: A wind turbine and a wind gathering structure according to any one of claims 1-8; the wind turbine is arranged in the wind gathering cavity and connected with the wind gathering structure along the first direction.
10. The wind power plant according to claim 9, characterized in that The wind turbine is a horizontal axis wind turbine.