Wind gathering structure of wind power generation device and wind power generation device
By designing a wind-gathering structure of a wind power generation device that includes a wind-gathering body, a return air baffle and a tail plate, the problem of strong dependence on wind direction in traditional wind power generation devices is solved, and more efficient wind energy utilization is achieved.
Patent Information
- Application Number
- CN202510179000.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-05-02
AI Technical Summary
Traditional wind power generation devices are highly dependent on wind directions, making it difficult to effectively capture changing wind directions, resulting in low wind energy utilization efficiency.
A wind-gathering structure of a wind power generation device is designed, including a wind-gathering body, a return air baffle and a tail panel. The air-collecting body converts the horizontal wind into a vertical direction through the flow guide and the flow guide. The return air baffle and the tail plate are adaptively adjusted to align the openings in the incoming wind direction, improving the wind energy utilization efficiency.
The wind collecting body converts the incoming wind in the horizontal direction into the vertical direction, and adaptively adjusts the rotation angle of the return air baffle, which significantly improves the wind energy utilization efficiency and reduces the dependence on the wind direction.
Smart Images
Figure CN119914455A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of wind power generation, and in particular relates to a wind gathering structure of a wind power generation device and a wind power generation device. Background Art
[0002] As the global demand for renewable energy continues to grow, wind power generation, as a clean and efficient form of energy, plays an important role in optimizing the energy structure. However, in practical applications, traditional wind power generation devices are highly dependent on wind direction and are difficult to effectively capture changing wind directions, resulting in low wind energy utilization efficiency. Summary of the invention
[0003] The present application aims to solve the technical problem in the prior art that 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.
[0004] The present application provides a wind gathering structure of a wind power generation device, comprising:
[0005] An air concentrator, wherein an air concentrator cavity is provided inside the air concentrator, and an air outlet is provided at one end of the air concentrator cavity in the first direction; the air concentrator is provided with a plurality of guide portions at intervals along the first direction, the plurality of guide portions are arranged around the air concentrator cavity, and a guide channel connecting the outside with the air concentrator cavity is formed between every two adjacent guide portions, the guide channel guides the wind entering from the outside into the air concentrator cavity and flows out from the air outlet along the first direction;
[0006] A return air baffle is rotatably disposed on one side of the air concentrator, the return air baffle blocks a circumferential portion of the guide channel from the outside, and a tail wing plate is connected to the side of the return air baffle away from the air concentrator, and the tail wing plate extends in a direction away from the air concentrator.
[0007] According to one embodiment of the present 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 by a plane perpendicular to the first direction.
[0008] According to one embodiment of the present application, the two edges of the return air baffle parallel to the first direction are respectively connected to a first wind collecting plate and a second wind collecting plate; an wind collecting duct connected to the guide duct is formed between the first wind collecting plate and the second wind collecting plate, and the width of the wind collecting duct decreases toward the direction of the guide duct.
[0009] According to one embodiment of the present application, a projection area of the air outlet on a first reference plane perpendicular to the first direction is defined as A1;
[0010] A projection area of one end of the air concentrating channel away from the flow guiding channel on a second reference plane perpendicular to the second direction is defined as A2;
[0011] The projection area A1 is smaller than the projection area A2, and the first direction is perpendicular to the second direction.
[0012] According to an embodiment of the present application, a cross section of the guide portion obtained by intercepting the guide portion through a third reference plane in the first direction is in the shape of an arc or an inverted parabola.
[0013] According to one embodiment of the present application, the distance between every two adjacent guide portions in the first direction increases gradually from the direction close to the air outlet to the direction away from the air outlet, or the distance between every two adjacent guide portions in the first direction is equal.
[0014] According to one embodiment of the present application, the air guide portion is an annular closed structure surrounding the wind collecting chamber, and the cross-section obtained by being cut by a plane perpendicular to the first direction is in the shape of a circular ring or a polygonal ring.
[0015] According to an embodiment of the present application, the wind concentrating body includes a plurality of support columns, and the support columns are penetrated through the plurality of guide portions in a direction parallel to the first direction.
[0016] In a second aspect, the present application provides a wind power generation device, which includes: a wind generator and a wind gathering structure as described in any one of the above embodiments; the wind generator is arranged in the wind gathering cavity and is connected to the wind gathering structure along the first direction.
[0017] According to one embodiment of the present application, the wind turbine is a horizontal-axis wind turbine.
[0018] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
[0019] The tail wing plate of the return air baffle of the present application adaptively adjusts the rotation angle of the return air baffle according to the wind direction, so that the opening is always aligned with the incoming wind direction, and the horizontal incoming wind is converted into a vertical direction through the wind gathering body and output from the air outlet, which greatly improves the wind energy utilization efficiency.
[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0022] Figure 1 is a structural schematic diagram of a wind gathering structure of a wind power generation device provided in an embodiment of the present application;
[0023] Figure 2 yes Figure 1 A partial enlarged view of part A;
[0024] Figure 3 is a schematic structural diagram of a return air baffle of a wind power generation device provided in an embodiment of the present application;
[0025] Figure 4 It is a schematic structural diagram of a return air baffle and a wind concentrator of a wind power generation device provided in an embodiment of the present application;
[0026] Figure 5 is a cross-sectional view of a return air baffle and a wind gathering body of a wind power generation device provided in an embodiment of the present application;
[0027] Figure 6 It is a schematic structural diagram of a wind power generation device provided in an embodiment of the present application.
[0028] Reference numerals:
[0029] 10. Wind gathering structure;
[0030] 100. Wind-gathering body;
[0031] 110, air collecting chamber; 111, air outlet; 120, air guide; 121, air guide channel; 130, support column; 210, return air baffle; 211, open; 220, tail wing plate; 230, first air collecting plate; 240, second air collecting plate; 250, air collecting channel;
[0032] 20. Wind turbine. DETAILED DESCRIPTION
[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0034] Reference below Figure 1-Figure 6 A wind gathering structure 10 of a wind power generation device and a wind power generation device according to an embodiment of the present application are described.
[0035] like Figure 1-Figure 3 As shown, the wind gathering structure 10 of the wind power generation device includes: a wind gathering body 100 and a return air baffle 210 .
[0036] The wind concentrating body 100 is provided with a wind concentrating chamber 110, and the wind concentrating chamber 110 is provided with an air outlet 111 at one end (the top in the figure) in the first direction. The wind concentrating body 100 is also provided with a plurality of guide portions 120 spaced apart along the first direction, and the plurality of guide portions 120 are arranged around the wind concentrating chamber 110. A guide channel 121 connecting the outside with the wind concentrating chamber 110 is formed between each two adjacent guide portions 120, and the guide channel 121 converts the wind entering from the outside along the second direction into the wind entering the wind concentrating chamber 110 along the first direction and flows out from the air outlet 111. The first direction may be a vertical direction or other possible directions, and the second direction is perpendicular to the first direction.
[0037] In some embodiments, the air guide 120 is an annular closed structure formed by a curved plate surrounding the air collection chamber 110, and the cross section obtained by being cut by a plane perpendicular to the first direction is in the shape of a circular ring or a polygonal ring. A plane in the first direction is defined as a reference plane, and the cross section obtained by cutting the air guide 120 by the reference plane is in the shape of two symmetrical circular arcs or an inverted parabola (see Figure 5 ); The inverted parabola can be a symmetrical figure of the parabola in the second direction.
[0038] In a specific implementation, if the guide portion 120 is cut by a plane perpendicular to the first direction to obtain a circular ring-shaped cross section, the return air baffle 210 can be rotatable relative to the wind concentrator 100 and is arranged on one side of the wind concentrator 100. The specific return air baffle 210 can be freely rotatably installed on the outside of the wind concentrator 100 through a bearing or a swivel support mechanism, and the rotation axis of the return air baffle 210 coincides with the central axis of the wind concentrator 100. If the guide portion 120 is cut by a plane perpendicular to the first direction to obtain a polygonal ring-shaped cross section (such as a hexagon or octagon), the return air baffle 210 can be fixedly connected to the wind concentrator 100, and the wind concentrating structure 10 as a whole can rotate around its central axis. The specific wind concentrating structure 10 can be installed on a base (not shown) through a bearing or a swivel support mechanism.
[0039] In other embodiments, the distance between every two adjacent guide portions 120 in the first direction increases gradually from a direction close to the air outlet 111 to a direction away from the air outlet 111, or the distance between every two adjacent guide portions 120 in the first direction is equal.
[0040] Each of the guide channels 121 is connected to the wind collecting chamber 110 , so that when wind flows in from the second direction, it is guided to the wind collecting chamber 110 through the guide channels 121 until it flows out from the air outlet 111 .
[0041] An opening 211 connected to the plurality of guide channels 121 is provided on one side of the return air baffle 210, and a tail wing plate 220 is provided on the side of the return air baffle 210 away from the wind collecting body 100, and the tail wing plate 220 extends in a direction away from the opening 211. Since the guide portion 120 is arranged circumferentially around the wind collecting chamber 110, the wind entering the wind collecting chamber from one side of the guide channel 121 may flow out from the other side of the guide channel. Therefore, the return air baffle 210 is arranged on one side of the guide channel 121 to stop the internal wind from flowing out of the guide channel 121 on that side. That is, the return air baffle 210 closes a circumferential part of the guide channel 121 from the outside, so that the wind in the wind collecting chamber 110 will be stopped by the return air baffle 210 and return to the wind collecting chamber 110 after reaching the return air baffle 210 via the guide portion 120, thereby achieving a better wind collecting effect.
[0042] The present embodiment is described below by taking the first direction as the vertical direction and the second direction as the horizontal direction as an example.
[0043] When the wind direction changes, the tail wing plate 220 is affected by the wind and deflects, thereby driving the return air baffle 210 to rotate so that the opening 211 is always aligned with the incoming wind direction, and the wind is guided from the opening 211 to the wind collecting chamber 110 through the guide channel 121. In this process, a part of the wind is guided to the air outlet 111 along the guide channel 121 extending to the air outlet 111 and is converted into vertical wind, and the other part of the wind continues to flow in the horizontal direction until it is blocked by the inner wall of the return air baffle 210 and then converted into vertical wind through the guide channel 121 to the air outlet 111.
[0044] To sum up, the tail wing plate 220 of the return air baffle 210 in the embodiment of the present application 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, and the horizontal incoming wind is converted into a vertical direction through the wind concentrating body 100 and output from the air outlet 111, which greatly improves the wind energy utilization efficiency.
[0045] like Figure 4 As shown, in some embodiments, the air concentrator 100 includes a plurality of support columns 130 , and each support column 130 is disposed through the plurality of air guides 120 in a direction parallel to the first direction.
[0046] In this embodiment, a plurality of guide portions 120 are arranged in layers along a first direction (eg, vertical direction) and are penetrated and fixed by support columns 130. This modular design enhances the flexibility of the structure and facilitates its application in wind turbines 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 intercepted by a plane perpendicular to the first direction. Specifically, the return air baffle 210 is further provided with a first air collecting plate 230 and a second air collecting plate 240, and an air collecting channel 250 is formed between the first air collecting plate 230 and the second air collecting plate 240, and the air collecting channel 250 is connected to the opening 211, and the width of the air collecting channel 250 decreases toward 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. When the width of the air collecting channel 250 gradually decreases, in order to keep the flow rate constant, the wind speed in the horizontal direction must increase. Therefore, the design of the air collecting channel 250 decreasing in width toward the opening 211 can be more efficiently captured by the air collecting body 100.
[0049] In some embodiments, the air outlet 111 has a first reference plane perpendicular to the first direction, and a projection area of the air outlet 111 along the first direction on the second reference plane is defined as A1;
[0050] One end of the air concentrating duct 250 away from the opening 211 has a second reference surface perpendicular to the second direction, and a projection area of the air concentrating duct 250 on the second reference surface along the second direction is defined as A2;
[0051] The projection area A1 is smaller than the projection 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 unchanged, the wind speed of the air outlet 111 must be greater than the wind speed of the open opening 211, thereby generating a wind gathering effect. That is, the greater the height-to-diameter ratio of the wind gathering body 100, 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 implementation, the tail wing plate 220 is located between the first wind collecting plate 230 and the second wind collecting plate 240, and the tail wing plate 220 is perpendicular to the return air baffle 210. This design ensures that the tail wing plate 220 can quickly sense the wind direction and drive the entire return air baffle 210 to adjust its position, so that the opening 211 is always aligned with the incoming wind direction, thereby improving the wind collecting efficiency.
[0054] like Figure 6 As shown, the present application also proposes a wind power generation device, including: a wind turbine 20 and a wind gathering structure 10 as described in any of the above embodiments.
[0055] The wind turbine 20 is disposed in the wind collecting cavity 110 and connected to the wind collecting structure 10 along the first direction. In this embodiment, the wind power generation end of the wind turbine 20 is disposed near the air outlet 111, and directly utilizes the high-speed wind flow accelerated by the wind collecting cavity 110, so that it can more efficiently convert wind energy into electrical energy.
[0056] It should be noted that vertical axis wind turbines have the advantages of strong self-starting ability, simple structure, easy maintenance, strong adaptability and no need for yaw devices, and are becoming more and more popular among researchers. However, the power generation efficiency of vertical axis wind turbines is always lower than that of horizontal axis wind turbines.
[0057] The wind power generation device of the present application adopts a horizontal axis wind turbine 20, which is vertically axisized. The horizontal wind is converted into vertical wind through the wind concentrator 100, and the wind speed is increased due to the larger height-to-diameter ratio of the wind concentrator 100. The present application not only retains the high efficiency of the horizontal axis wind turbine, but also makes the structure relatively simple and easy to maintain; the tail wing plate 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, so there is no high requirement for the wind direction, and the wind speed doing work in the vertical direction is numerically greater than the wind speed flowing in the horizontal direction, and is suitable for promotion and use in wind power generation occasions under weak and strong wind conditions.
[0058] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0060] In the description of this application, "first feature" or "second feature" may include one or more of the features.
[0061] In the description of the present application, “plurality” means two or more.
[0062] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.
[0063] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 present application. 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 may be combined in any one or more embodiments or examples in a suitable manner.
[0065] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. A wind gathering structure of a wind power generation device, characterized in that: include: An air concentrator, wherein an air concentrator cavity is provided inside the air concentrator, and an air outlet is provided at one end of the air concentrator cavity in the first direction; the air concentrator is provided with a plurality of guide portions at intervals along the first direction, the plurality of guide portions are arranged around the air concentrator cavity, and a guide channel connecting the outside with the air concentrator cavity is formed between every two adjacent guide portions, the guide channel guides the wind entering from the outside into the air concentrator cavity and flows out from the air outlet along the first direction; A return air baffle is rotatably disposed on one side of the air concentrator, the return air baffle blocks a circumferential portion of the guide channel from the outside, and a tail wing plate is connected to the side of the return air baffle away from the air concentrator, and the tail wing plate extends in a direction away from the air concentrator.
2. The wind gathering structure according to claim 1, characterized in that: The sum of the external air inlet areas of the guide channel is greater than the cross-sectional area of the air outlet taken by a plane perpendicular to the first direction.
3. The wind gathering structure according to claim 1, characterized in that: The two edges of the return air baffle plate parallel to the first direction are respectively connected with the first air gathering plate and the second air gathering plate; an air gathering duct connected with the guide duct is formed between the first air gathering plate and the second air gathering plate, and the width of the air gathering duct decreases toward the direction of the guide duct.
4. The wind gathering structure according to claim 3, characterized in that: The projection area of the air outlet on a first reference plane perpendicular to the first direction is defined as A1; A projection area of one end of the air concentrating channel away from the flow guiding channel on a second reference plane perpendicular to the second direction is defined as A2; The projection area A1 is smaller than the projection area A2, and the first direction is perpendicular to the second direction.
5. The wind gathering structure according to claim 1, characterized in that: A cross section of the guide portion intercepted by a third reference plane passing through the first direction is in the shape of an arc or an inverted parabola.
6. The wind gathering structure according to claim 1, characterized in that: The distance between every two adjacent air guide portions in the first direction increases gradually from a direction close to the air outlet to a direction away from the air outlet, or the distance between every two adjacent air guide portions in the first direction is equal.
7. The wind gathering structure according to claim 1, characterized in that: The air guide portion is an annular closed structure surrounding the wind collecting cavity, and the cross section obtained by cutting the air guide portion along 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 to 7, characterized in that: The wind concentrating body includes a plurality of support columns, and the support columns are arranged through the plurality of air guide portions in a direction parallel to the first direction.
9. A wind power generation device, characterized in that: include: A wind generator and a wind gathering structure as described in any one of claims 1 to 8; the wind generator is arranged in the wind gathering cavity and is connected to the wind gathering structure along the first direction.
10. The wind power generation device according to claim 9, characterized in that: The wind turbine is a horizontal axis wind turbine.