Wind collecting and flow guiding structure of wind power generation device

Abstract

The utility model discloses a wind collecting and flow guiding structure of a wind power generation device. The wind collecting and flow guiding structure comprises a flow guiding combined structure, a conical ring composite body, a supporting structure and an impeller structure. The flow guide combined structure comprises flow guide blades, a rotating shaft and an arc-shaped guide column; the guide vanes are trapezoidal structures, and the heights of the guide vanes are gradually reduced towards the impeller structure; the rotating shaft is positioned between the guide vanes; the arc-shaped guide columns are located above and below the guide vanes, and the angle of the arc-shaped guide columns is automatically adjusted along the arc-shaped guide grooves in the conical ring composite body under the action of wind pressure. The conical ring composite bodies are located on the upper portion and the lower portion of the flow guide composite structure and comprise an upper conical ring, a lower conical ring, a dustproof flow guide structure and an adjustable telescopic structure. The upper conical ring comprises an upper conical ring body and an arc-shaped guide groove; the lower conical ring comprises a lower conical ring body and an arc-shaped guide groove, and a rotating shaft fixing device is mounted on the upper conical ring body and the lower conical ring body; the dustproof diversion structure is located at the top of the upper conical ring; the adjustable telescopic structure is located between the upper conical ring and the dustproof flow guide structure.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation, and specifically discloses a wind collection and guiding structure for a vertical wind power generation device. Background Technology

[0002] Vertical axis wind turbines have gained significant attention in distributed energy applications due to their wind direction independence, compact structure, and low noise characteristics, making them more adaptable to urban environments than horizontal axis turbines. However, insufficient starting torque under low wind speed conditions (less than 3 m / s) severely restricts their large-scale promotion and application.

[0003] Existing wind-gathering and airflow guiding structures, such as patent JP2012154332A, use a semi-enclosed static airflow guide. Although this can reduce the cut-in wind speed to 2 m / s, its fixed design leads to an increase in the intensity of crosswind turbulence, and dust accumulation causes the surface roughness (Ra) of the airflow guide to increase year by year, resulting in a decrease in aerodynamic efficiency.

[0004] Patent US20180128241A1 further proposes a conical diffuser to accelerate airflow, but its carbon fiber material results in a high cost ratio, and the problem of excessive local flow velocity loss caused by sand accumulation in environments with high wind and sand content also restricts the adaptability and application of the product structure.

[0005] The aforementioned technical deficiencies indicate that the existing flow guide structure of vertical axis wind turbines has significant contradictions in terms of low wind speed start-up enhancement, dynamic environment adaptation, and operation and maintenance cost control. Therefore, there is an urgent need in the existing technology for a flow guide scheme that combines high-efficiency start-up torque, self-cleaning capability, and lightweight characteristics to overcome the technical bottleneck of vertical axis wind turbines in complex environments. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model discloses a wind collection and guiding structure for a vertical wind power generation device. The technical problem it aims to solve is: by providing a wind collection and guiding structure for a vertical wind power generation device, it addresses the problem of insufficient starting torque and inadequate utilization of wind resources in wind power generation devices under low wind speed conditions under existing technologies. At the same time, it adopts a ring-shaped rotating vibration structure for the guiding blades to suppress dust accumulation and solve the problem of dirt accumulation during operation.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A wind-collecting and guiding structure for a vertical wind power generation device includes a guiding assembly structure, a cone-ring composite, a support structure, and an impeller structure.

[0009] The flow guiding assembly includes flow guiding blades, a rotating shaft, and an arc-shaped guide post. The flow guiding blades are trapezoidal in shape, with their height gradually decreasing towards the impeller structure. The rotating shaft is located in the middle of the flow guiding blades and is fixed by welding or bolting. The arc-shaped guide post is located above and below the flow guiding blades and automatically adjusts its angle along the arc-shaped guide groove on the conical ring composite under wind pressure.

[0010] The conical ring composite is located in the upper and lower parts of the flow guiding assembly structure, including an upper conical ring, a lower conical ring, a dustproof flow guiding structure, and an adjustable telescopic structure; the upper conical ring includes an upper conical ring body and an arc-shaped guide groove; the lower conical ring includes a lower conical ring body and an arc-shaped guide groove, and a rotating shaft fixing device is installed on the upper and lower conical ring bodies; the dustproof flow guiding structure is located at the top of the upper conical ring; the adjustable telescopic structure is located in the middle position between the upper conical ring and the dustproof flow guiding structure.

[0011] The supporting structure is located at the bottom of the lower conical ring and is a circular cone structure, which serves as a structural support.

[0012] The impeller structure is located at the center of the flow guide assembly and the cone-ring composite. The impeller blades are arc-shaped with an arc angle ranging from 30 to 45°.

[0013] The guide vanes are made of glass fiber composite material with epoxy resin as the base material and a thickness of not less than 2 mm. The direction of the guide vanes is tangent to the impeller structure fan blades, with the tangent located at the outer 1 / 3 position of the fan blades and the tangent angle ranging from 30 to 45°. Multiple sets of guide vanes are evenly distributed in the middle position between the upper and lower conical rings.

[0014] During the airflow guiding process of the aforementioned airflow guiding assembly structure, the airflow guiding blades, through the combined action of the rotating shaft and the arc-shaped guide column, provide the airflow guiding blades with a rotation angle and vibration force in the horizontal direction, with a rotation angle range of 0-15°.

[0015] The dustproof and airflow guiding structure is a circular integrated structure made of glass fiber composite material with epoxy resin as the base material and a thickness of not less than 1mm.

[0016] The adjustable telescopic structure can be manually or automatically adjusted in height according to changes in the outdoor environment. The height adjustment range is 5-30mm, and the thickness is not less than 1mm.

[0017] Both the upper and lower conical ring bodies have a fully enclosed structure, are made of glass fiber composite material, have an epoxy resin base material, and a thickness of not less than 1 mm.

[0018] The impeller structure rotates in a circular motion in a counter-clockwise direction.

[0019] The wind collection and guiding structure for a vertical wind power generation device provided by this utility model has the following advantages compared with the prior art:

[0020] This invention solves the problem of insufficient starting torque of wind turbine generators under low wind speed conditions. Simultaneously, it utilizes the vibration effect of the guide vanes during the wind collection and guidance process to provide a real-time self-cleaning function.

[0021] This equipment uses a glass fiber composite material with epoxy resin as the base material as the wind collection and guiding carrier, ensuring structural strength while reducing overall weight, providing a lightweight solution for vertical wind power generation devices. It also offers significant advantages in operation and maintenance costs compared to carbon fiber composite materials. Therefore, this invention simultaneously possesses high-efficiency starting torque, self-cleaning capability, and lightweight characteristics, effectively overcoming the current technical bottlenecks of vertical axis wind turbines in complex environments, and providing a feasible technical solution for large-scale promotion and application. Attached Figure Description

[0022] Figure 1 : Schematic diagram of the overall structure of this utility model;

[0023] Figure 2 : A schematic diagram of the elevation and cross-sectional structure of this utility model;

[0024] Figure 3 : Schematic diagram of the horizontal cross-sectional structure of this utility model;

[0025] Figure 4 : Figure 1 Enlarged schematic diagram of the structure of region A in the middle;

[0026] In the figure: 1. Guide assembly structure, 11. Guide vane, 12. Rotating shaft, 13. Arc-shaped guide post, 14. Outer adjusting arc groove, 15. Inner adjusting arc groove, 2. Cone ring composite, 21. Upper cone ring, 22. Lower cone ring, 23. Dustproof guide structure, 24. Adjustable telescopic structure, 3. Support structure, 4. Impeller structure. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," "rotation," and "support" should be interpreted broadly. For example, they can refer to pipe connections, fitting connections, or equipment connections; they can be split connections or integral connections; they can be direct connections or indirect connections through an intermediate medium; they can be connections within two components or connections outside two components; they can be direct contact or indirect contact; they can be contact between moving parts or contact between fixed parts; they can be fixing between two components or fixing between devices; they can be rotation between two components or rotation of a single component; they can be support in the horizontal direction or support in the vertical direction. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example 1: As shown in the attached document Figure 1 As shown in the attached figure, the overall structure of the wind collection and guiding structure of the vertical wind power generation device is illustrated, including a guiding assembly structure 1, a rotating shaft 12, an arc-shaped guide column 13, a conical ring composite 2, an upper conical ring 21, a lower conical ring 22, and an impeller structure 4. The impeller structure 4 rotates in a ring shape in a counterclockwise direction.

[0030] As attached Figure 2 As shown in the attached figure, an exemplary cross-sectional view of the wind collection and guiding structure of the vertical wind power generation device is shown, including a dustproof guiding structure 23, an adjustable telescopic structure 24, and a support structure 3.

[0031] As attached Figure 3 As shown in the attached figure, the horizontal cross-sectional view of the wind collection and guiding structure of the vertical wind power generation device is shown by way of example, including the guide blades 11.

[0032] In an embodiment of the present invention, the specific structure of the flow guiding assembly structure 1 is as follows: it includes a flow guiding blade 11, which is a sheet metal structure and is evenly distributed in the conical ring composite body; the rotating shaft 12 is a smooth round shaft structure, which is installed in the middle position of the flow guiding blade 11 and is connected by welding or snap-fit; the arc-shaped guide post 13 is a cylindrical structure, located on the top and bottom sides of the flow guiding blade 11 and is fixed by welding.

[0033] like Figure 1 , 4As shown, the cone-ring composite 2 includes an upper cone ring 21 and a lower cone body 22. Both the upper cone ring 21 and the lower cone ring 22 have a fully enclosed structure. Both the upper cone ring 21 and the lower cone body 22 have several arc-shaped guide grooves corresponding to their top and bottom. Each guide vane 11 has two arc-shaped guide posts 13 corresponding to two arc-shaped guide grooves at its top and bottom. Taking the upper cone ring 21 as an example, the two arc-shaped guide grooves are an outer adjusting arc groove 14 and an inner adjusting arc groove 15. Figure 4 As shown, the upper cone ring 21 and the lower cone 22 are both cone structures. The swing angle is automatically adjusted by the outer adjustment arc groove 14 and the inner adjustment arc groove 15 under different wind pressure and wind direction.

[0034] The dustproof and airflow guiding structure 23 is located at the top of the upper conical ring 21 and is a circular integrated structure. It serves to reduce dust accumulation and minimize damage to the fan blades and airflow guiding structure caused by wind and sand. The adjustable telescopic structure 24 is located between the upper conical ring 21 and the dustproof and airflow guiding structure 23. Through vertical adjustment, the setting height of the dustproof and airflow guiding structure 23 can be flexibly adjusted according to environmental changes. In this embodiment, the adjustable telescopic structure 24 can be two L-plates that are arranged in a matching manner. Each L-plate is provided with a vertical elongated groove. The two L-plates are fixed to the upper conical ring 21 and the dustproof and airflow guiding structure 23, respectively. The setting height of the dustproof and airflow guiding structure 23 is adjusted by adjusting the overlap length of the vertical elongated grooves. The height adjustment range is 5-30mm, thereby adjusting the airflow gap between the upper conical ring 21 and the dustproof and airflow guiding structure 23.

[0035] The support structure 3 is located at the bottom of the lower conical ring 22 and is a circular tube conical ring support structure. By supporting the lower conical ring 22, it improves the static support effect of the overall structure in the vertical direction.

[0036] The impeller structure 4 is located at the center of the flow guide assembly structure 1 and the cone-ring composite 2. Under the action of the flow guide blades 11 in the flow guide assembly structure 1, the air intake volume is controlled, thereby increasing the circumferential rotation speed of the fan blades in the impeller structure 4.

[0037] In this embodiment, the guide vane 11 is made of glass fiber composite material, with epoxy resin as the substrate and a thickness of not less than 2 mm. The direction of the guide vane 11 is tangent to the fan blade of the impeller structure 4, with the tangent located at the outer 1 / 3 position of the fan blade and the tangent angle ranging from 30 to 45°. Multiple sets of guide vanes are evenly distributed in the middle position between the upper conical ring 21 and the lower conical ring 22.

[0038] During the air collection and guidance process, the guide vane 11, through the combined action of the rotating shaft 12 and the arc-shaped guide post 13, provides the guide vane 11 with rotation angle and vibration force in the horizontal direction.

[0039] The dustproof and flow-guiding structure 23 is a circular integrated structure made of glass fiber composite material and epoxy resin as the base material.

[0040] Example 2: In another embodiment of this utility model, as shown in the appendix Figure 3 As shown, under different wind speed conditions, the low wind speed (less than 3 m / s) in the external environment gradually increases within the gradually narrowing conical flow channel composed of the guide vanes 11, upper conical ring 21, and lower conical ring 22, utilizing the Venturi flow effect to increase the wind speed and thus indirectly improve the power generation capacity. Simultaneously, when the wind power in the impeller structure 4 is released, the wind speed gradually decreases within the gradually widening conical flow channel composed of the guide vanes 11, upper conical ring 21, and lower conical ring 22, reducing the wind impact on the overall structure. Furthermore, the multiple sets of guide vanes 11 are evenly distributed and form a complete enclosure, tangential to the blades in the impeller structure 4, increasing the cross-sectional area of ​​the blades during rotation and further enhancing the overall rotation speed of the impeller structure 4.

[0041] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" or "a plurality of groups" means two or more.

Claims

1. A wind collection and guiding structure for a vertical wind power generation device, characterized in that: This includes the flow guide assembly structure, the cone-ring composite, the support structure, and the impeller structure; The flow guiding assembly includes flow guiding blades, a rotating shaft, and arc-shaped guide posts. The flow guiding blades are trapezoidal in shape, with their height gradually decreasing towards the impeller structure. The rotating shaft is located in the middle of the flow guiding blades. The arc-shaped guide posts are located above and below the flow guiding blades, and their angle automatically adjusts along the arc-shaped guide grooves on the conical ring composite under wind pressure. The conical ring composite is located in the upper and lower parts of the flow guiding assembly structure, including an upper conical ring, a lower conical ring, a dustproof flow guiding structure, and an adjustable telescopic structure; the upper conical ring includes an upper conical ring body and an arc-shaped guide groove; the lower conical ring includes a lower conical ring body and an arc-shaped guide groove, and a rotating shaft fixing device is installed on the upper and lower conical ring bodies; the dustproof flow guiding structure is located at the top of the upper conical ring; the adjustable telescopic structure is located in the middle position between the upper conical ring and the dustproof flow guiding structure.

2. The wind collection and guiding structure for a vertical wind power generation device according to claim 1, characterized in that: The supporting structure is located at the bottom of the lower conical ring and is a circular conical structure.

3. The wind collection and guiding structure for a vertical wind power generation device according to claim 1, characterized in that: The direction of the guide vanes is tangent to the impeller structure fan blades, with the tangent position located at the outer 1 / 3 position of the fan blades and the tangent angle ranging from 30 to 45°. Multiple sets are evenly distributed in the middle position between the upper and lower conical rings.

4. The wind collection and guiding structure for a vertical wind power generation device according to claim 1, characterized in that: The adjustable telescopic structure consists of two L-plates that work together. Each L-plate has a vertical groove. The two L-plates are fixed to the upper conical ring and the dustproof and flow-guiding structure, respectively. The height of the dustproof and flow-guiding structure can be adjusted by adjusting the overlap length of the vertical grooves.

5. The wind collection and guiding structure for a vertical wind power generation device according to claim 1, characterized in that: Both the upper conical ring body and the lower conical ring body have a fully enclosed structure, are made of glass fiber composite material, have an epoxy resin base material, and have a thickness of not less than 1 mm.

6. The wind collection and guiding structure for a vertical wind power generation device according to claim 1, characterized in that: The impeller structure rotates in a circular motion in a counter-clockwise direction.

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