Wind power generation equipment

Abstract

The utility model relates to the technical field of power generation equipment, and provides wind power generation equipment which comprises a wind power generator, a wind collecting mechanism and a wind guide barrel, and the wind collecting mechanism and the wind guide barrel are sequentially arranged in the vertical direction. An air channel penetrating in the vertical direction is formed in the air guide barrel, the wind driven generator is arranged in the air channel, and the wind collecting mechanism is rotatably arranged at the upper end of the air guide barrel and comprises a first flow guide plate, a second flow guide plate and a shielding part connected to the lower end of the first flow guide plate and the lower end of the second flow guide plate. The shielding part shields a part of an upper port of the air duct, the part, not shielded by the shielding part, of the upper port of the air duct is an air inlet, the lower port of the air duct is an air outlet, and the area of the part, shielded by the shielding part, of the upper port of the air duct is larger than that of the part, not shielded by the shielding part, of the upper port of the air duct. The wind power generation equipment can solve the technical problem of low wind energy utilization rate of wind power generation equipment in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of power generation equipment, and more specifically, to a wind power generation equipment. Background Art

[0002] As people's demand for green energy increases, various new energy utilization equipment is increasing, among which wind power generation equipment has the most rapid development momentum. However, the current wind power generation equipment has high requirements for wind speed, and the general rated wind speed is between 12m / s and 15m / s, which leads to the general installation of wind power generation equipment in relatively open areas. In addition, the current horizontal axis wind turbine has a single appearance and lacks aesthetics, which is not suitable for use in urban areas. At present, researchers at home and abroad have adopted wind collection channels to utilize low wind speed power generation devices, but the existing devices all adopt L-shaped layout, which reduces the utilization rate of wind energy from the perspective of fluid dynamics, and the wind collection part adopts a fixed form, and the air escape rate is high, which further reduces the utilization rate of wind energy. Utility Model Content

[0003] In view of this, the present application provides a wind power generation equipment to solve the technical problem of low wind energy utilization rate of wind power generation equipment in the prior art.

[0004] The present application provides a wind power generation device, comprising a wind power generator, a wind collecting mechanism and a wind guide tube sequentially arranged in a vertical direction;

[0005] An air duct which passes through in a vertical direction is formed in the air guide tube, the wind generator is arranged in the air duct, and the air collecting mechanism is rotatably arranged at the upper end of the air guide tube, the air collecting mechanism includes a first guide plate, a second guide plate and a shielding portion connected to the lower ends of the first guide plate and the second guide plate, the shielding portion shields a part of the upper port of the air duct, the part of the upper port of the air duct not shielded by the shielding portion is an air inlet, and the lower port of the air duct is an air outlet, and the area of ​​the part of the upper port of the air duct blocked by the shielding portion is larger than the area of ​​the part not blocked by the shielding portion.

[0006] Furthermore, the wind collecting mechanism includes a paddle disposed above the shielding portion, the first guide plate, the paddle and the second guide plate are arranged in sequence at angular intervals around the rotation axis of the wind collecting mechanism, and the shielding portion extends from the first guide plate through the paddle to the second guide plate.

[0007] Further, the angle between the side of the first guide plate facing away from the blade and the side of the second guide plate facing away from the blade is 90°, the angle between the blade and the first guide plate is 135°, and the angle between the blade and the second guide plate is 135°.

[0008] Furthermore, the wind collecting mechanism includes a central rotating shaft, the first guide plate, the paddles and the second guide plate are all connected to the side of the central rotating shaft, and the shielding portion is connected to the lower end of the central rotating shaft.

[0009] Furthermore, the cross section of the central rotating shaft gradually expands upward along the vertical direction.

[0010] Furthermore, the wind power generation equipment includes a top plate arranged at the upper end of the central rotating shaft, and the upper surface of the top plate is an arc surface convex upward.

[0011] Furthermore, a limiting groove is provided on the upper edge of the air guide cylinder, and the outer edge of the shielding portion can be rotatably limited in the limiting groove.

[0012] Furthermore, a sliding block is connected to the outer edge of the shielding portion, and the sliding block is in slidable contact with the limiting groove.

[0013] Furthermore, the shielding portion is a fan-shaped plate.

[0014] Furthermore, the air duct gradually expands from the waist of the air guide tube toward both ends of the air guide tube in the vertical direction, and the wind turbine is arranged in the air duct corresponding to the waist of the air guide tube.

[0015] The beneficial effects of the wind power generation equipment provided by the present application are:

[0016] In the wind power generation equipment provided by the utility model, since the wind collecting mechanism is provided with a shielding portion, the shielding portion shields a part of the upper port of the air duct, and the part of the upper port of the air duct not shielded by the shielding portion is the air inlet, and the area of ​​the part of the upper port of the air duct shielded by the shielding portion is larger than the area of ​​the part not shielded by the shielding portion (equivalent to the air inlet). Therefore, when ensuring that the external wind enters the air guide tube from the air inlet, it can be blocked by the shielding portion from escaping from the upper port of the air duct, thereby reducing the escape rate of air entering the air guide tube and improving the wind energy utilization rate of the wind power generation equipment. In addition, a wind duct that passes through the air guide tube in a vertical direction is formed in the air guide tube, which improves the wind energy utilization rate from the perspective of fluid dynamics and is also convenient for arrangement in more scenes and locations (both open areas and areas with limited space).

[0017] In a further solution, the wind collecting mechanism includes a paddle arranged above the shielding portion, and the paddle can be used to rotate and adjust the direction of the wind collecting mechanism according to the wind direction to ensure that the air inlet always faces the wind direction, that is, to ensure that the air inlet direction is always the direction with the strongest wind force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A three-dimensional diagram of a wind power generation device provided for one embodiment of the present application;

[0020] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 A cross-sectional view of a wind power generation device provided for one embodiment of the present application;

[0022] Figure 4 A partial cross-sectional view of the upper edge of an air guide cylinder in a wind power generation device provided in one embodiment of the present application.

[0023] The reference numerals in the above drawings are as follows:

[0024] 1-first threaded fastener; 2-slider; 3-second threaded fastener; 4-bracket; 11-wind turbine; 100-wind collecting mechanism; 101-first guide plate; 102-second guide plate; 103-shielding portion; 104-blade; 105-center shaft; 106-top plate; 200-air guide tube; 201-air duct; 202-upper port; 203-air inlet; 204-lower port; 205-limiting groove; 206-upper sealing plate; 207-first side; 208-second side; 209-waist. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0030] See also Figures 1 to 3 , the embodiment of the utility model provides a wind power generation device, which is particularly suitable for low wind speed power generation (or breeze power generation), including a wind generator 11, a wind collecting mechanism 100 and a wind guide cylinder 200 arranged in sequence along the vertical direction;

[0031] An air duct 201 penetrating in a vertical direction is formed in the air guide tube 200, a wind turbine 11 is arranged in the air duct 201, and an air collecting mechanism 100 is rotatably arranged at the upper end of the air guide tube 200, the air collecting mechanism 100 comprises a first guide plate 101, a second guide plate 102 and a shielding portion 103 connected to the lower ends of the first guide plate 101 and the second guide plate 102, the shielding portion 103 shields a portion of an upper port 202 of the air duct 201, a portion of the upper port 202 of the air duct 201 not shielded by the shielding portion 103 is an air inlet 203, a lower port 204 of the air duct 201 is an air outlet, and an area of ​​a portion of the upper port 202 of the air duct 201 shielded by the shielding portion 103 is larger than an area of ​​a portion not shielded by the shielding portion 103.

[0032] In the wind power generation device provided by the utility model, since the wind collecting mechanism 100 has a shielding portion 103, the shielding portion 103 shields a portion of the upper port 202 of the wind duct 201, and the portion of the upper port 202 of the wind duct 201 not shielded by the shielding portion 103 is the air inlet 203, and the area of ​​the portion of the upper port 202 of the wind duct 201 shielded by the shielding portion 103 is larger than the area of ​​the portion not shielded by the shielding portion 103 (equivalent to the air inlet 203), so while ensuring the outside When the wind enters the air guide 200 from the air inlet 203, it can be blocked by the shielding portion 103 and escape from the upper port 202 of the air duct 201, thereby reducing the escape rate of air entering the air guide 200 and improving the wind energy utilization rate of the wind power generation equipment. In addition, a wind duct 201 that runs through the air guide 200 in a vertical direction is formed in the air guide 200, which improves the wind energy utilization rate from the perspective of fluid dynamics and is also convenient for deployment in more scenarios and locations (either open areas or areas with limited space).

[0033] Specifically, the shielding portion 103 may be a fan-shaped plate or other suitable shapes.

[0034] See also Figure 1 According to an embodiment of the utility model, the wind collecting mechanism 100 includes a paddle 104 arranged above the shielding portion 103, and the first guide plate 101, the paddle 104 and the second guide plate 102 are arranged in sequence at angular intervals around the rotation axis of the wind collecting mechanism 100. The shielding portion 103 extends from the first guide plate 101 through the paddle 104 to the second guide plate. The paddle 104 can be used to enable the wind collecting mechanism 100 to rotate and adjust its direction according to the wind direction to ensure that the air inlet 203 always faces the wind direction, that is, to ensure that the air inlet direction is always the direction with the greatest wind force. It can be understood that as the wind collecting mechanism 100 rotates, the position of the air inlet 203 can change in real time.

[0035] According to a specific embodiment of the present invention, the angle between the side of the first guide plate 101 away from the blade 104 and the side of the second guide plate 102 away from the blade 104 is 90°, which is equivalent to the angle between the two side edges of the air inlet 203 being 90°, the angle between the blade 104 and the first guide plate 101 is 135°, and the angle between the blade 104 and the second guide plate is 135°. It has been demonstrated by known experiments that such a parameter arrangement makes the wind collecting mechanism 100 have the highest wind collecting efficiency. Of course, the position angle distribution of the first guide plate 101, the second guide plate 102 and the blade 104 in the present invention is not limited to the detailed design in this embodiment.

[0036] See also Figure 1 and Figure 3According to one embodiment of the utility model, the wind collecting mechanism 100 includes a central rotating shaft 105, a first guide plate 101, a paddle 104 and a second guide plate 102 are all connected to the side of the central rotating shaft 105, and a shielding portion 103 is connected to the lower end of the central rotating shaft 105.

[0037] See also Figure 1 and Figure 3 Preferably, the cross section of the central shaft 105 gradually expands upward in the vertical direction, so as to facilitate the introduction of external wind into the air inlet 203 and improve the utilization rate of wind energy.

[0038] According to an embodiment of the present invention, the wind power generation equipment includes a top plate 106 disposed at the upper end of the central rotating shaft 105, and the upper surface of the top plate 106 is an arc surface convex upward to prevent accumulation of rainwater, snow or other objects.

[0039] See also Figure 4 According to a specific embodiment of the utility model, a limiting groove 205 is provided at the upper edge of the air guide tube 200, and the outer edge of the shielding portion 103 can be rotatably limited in the limiting groove 205. The limiting groove 205 can be specifically formed by detachably installing a surrounding upper sealing plate 206 on the upper edge of the air guide tube 200 through a first threaded fastener 1.

[0040] See also Figure 4 According to a specific embodiment of the utility model, the outer edge of the shielding portion 103 is connected to a slider 2, and the slider 2 is slidably in contact with the limiting groove 205. The slider 2 can be made of materials such as graphite, which can reduce the friction resistance when the shielding portion 103 is rotatably limited in the limiting groove 205. Specifically, the upper edge of the air guide tube 200 sequentially forms a first side 207 extending outward in the horizontal direction and a second side 208 extending upward in the vertical direction. The upper end of the second side 208 is detachably connected to the upper sealing plate 206 through a first threaded fastener 1. The upper sealing plate 206, the second side 208 and the first side 207 jointly define the limiting groove 205. The lower part of the outer edge of the shielding portion 103 can be detachably connected to the slider 2 through a second threaded fastener 3. The lower surface of the slider 2 is in sliding contact with the upper surface of the first side 207. The first threaded fastener 1 and the second threaded fastener 3 can specifically be bolts, screws, etc.

[0041] See also Figure 1 and Figure 3According to an embodiment of the utility model, the wind duct 201 gradually expands from the waist 209 of the wind guide tube 200 toward the two ends of the wind guide tube 200 in the vertical direction. The wind turbine 11 is arranged in the wind duct 201 corresponding to the waist 209 of the wind guide tube 200. This embodiment utilizes the Venturi effect to gather the wind entering from the air inlet 203, thereby increasing the wind speed. Therefore, the wind turbine 11 is arranged at the narrowest part of the wind channel. The airflow entering the wind duct 201 from the air inlet 203 passes through here to blow the blades of the wind turbine 11 to rotate, thereby performing wind power generation operation. The airflow finally flows out from the air outlet, and the air outlet also becomes an outward-expanding trumpet mouth to reduce the wind speed at the air outlet, which does not affect the surrounding environment. Overall, the utilization rate of wind energy is improved, and low wind speed can be used to generate electricity.

[0042] According to a preferred embodiment of the utility model, through fluid mechanics simulation, in order to improve the utilization rate of wind energy, the number of wind generators 11 is preferably three, which are arranged in the wind duct 201 corresponding to the waist 209 of the air guide tube 200 in a vertical direction and spaced apart from each other. Of course, the number of wind generators 11 is not limited to three.

[0043] See also Figure 1 and Figure 3 In addition, the embodiment of the utility model provides a wind power generation equipment which also includes a bracket 4 arranged on the outside of the wind guide tube 200, and the bracket 4 supports the wind guide tube 200 and arranges the lower port 204 of the wind guide tube 200 off the ground. Specifically, the bracket 4 can be in the form of a cylindrical steel pipe, the upper end of which is connected to the outer side of the upper end of the wind guide tube 200, and the lower end of which is connected to the foundation. The upper and lower ends of the bracket 4 are offset by 90° in the top view direction to form a spiral shape to support the overall weight of the wind power generation equipment and enhance the overall aesthetics.

[0044] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A wind power generation device, characterized in that: It includes a wind turbine, a wind collecting mechanism and a wind guide tube which are arranged in sequence along the vertical direction; An air duct which passes through in a vertical direction is formed in the air guide tube, the wind generator is arranged in the air duct, and the air collecting mechanism is rotatably arranged at the upper end of the air guide tube, the air collecting mechanism includes a first guide plate, a second guide plate and a shielding portion connected to the lower ends of the first guide plate and the second guide plate, the shielding portion shields a part of the upper port of the air duct, the part of the upper port of the air duct not shielded by the shielding portion is an air inlet, and the lower port of the air duct is an air outlet, and the area of ​​the part of the upper port of the air duct blocked by the shielding portion is larger than the area of ​​the part not blocked by the shielding portion.

2. The wind power generation equipment according to claim 1, characterized in that: The wind collecting mechanism includes a paddle disposed above the shielding portion, the first guide plate, the paddle and the second guide plate are arranged in sequence at angular intervals around the rotation axis of the wind collecting mechanism, and the shielding portion extends from the first guide plate through the paddle to the second guide plate.

3. The wind power generation equipment according to claim 2, characterized in that: The angle between the side of the first guide plate facing away from the blade and the side of the second guide plate facing away from the blade is 90°, the angle between the blade and the first guide plate is 135°, and the angle between the blade and the second guide plate is 135°.

4. The wind power generation equipment according to claim 2, characterized in that: The wind collecting mechanism comprises a central rotating shaft, the first guide plate, the paddles and the second guide plate are all connected to the side of the central rotating shaft, and the shielding portion is connected to the lower end of the central rotating shaft.

5. The wind power generation equipment according to claim 4, characterized in that: The cross section of the central rotating shaft gradually expands upward along the vertical direction.

6. The wind power generation equipment according to claim 4, characterized in that: The wind power generation equipment comprises a top plate arranged at the upper end of the central rotating shaft, and the upper surface of the top plate is an arc surface convex upward.

7. The wind power generation device according to any one of claims 1 to 6, characterized in that: The upper edge of the air guide cylinder is provided with a limiting groove, and the outer edge of the shielding portion can be rotatably limited in the limiting groove.

8. The wind power generation equipment according to claim 7, characterized in that: The outer edge of the shielding portion is connected with a sliding block, and the sliding block is in slidable contact with the limiting groove.

9. The wind power generation device according to any one of claims 1 to 6, characterized in that: The shielding portion is a fan-shaped plate.

10. The wind power generation device according to any one of claims 1 to 6, characterized in that: The air duct gradually expands from the waist of the air guide tube toward both ends of the air guide tube in a vertical direction, and the wind turbine is arranged in the air duct corresponding to the waist of the air guide tube.

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