A wind power generation device

Abstract

This invention discloses a wind power generation device, including a windward upper component, a lower power generation component, and a cylindrical body. The bottom of the cylindrical body is fixed to the lower power generation component, and the top of the cylindrical body is rotatably connected to the windward upper component via a slewing support. The inner cavity of the lower power generation component communicates with the inner cavity of the windward upper component through the cavity of the cylindrical body. When the windward upper component turns with the wind, its front end faces the wind and its windward side is aligned with the wind. The air pressure difference generated inside and outside the windward side draws air in from the opening of the lower power generation component, passes through the cavity of the cylindrical body, and is discharged from the windward side of the windward upper component. The lower power generation component generates electricity using a turbine based on the drawn-in air. This method eliminates the need for any exposed fan blades, high-altitude installation, and maintenance. By utilizing the air pressure difference to draw in air and generate wind to drive the turbine, it can increase wind speed, is safer, more efficient, lower in cost, and easier to install and maintain.

Description

Technical Field

[0001] This invention relates to the field of green energy power generation technology, and in particular to a wind power generation device. Background Technology

[0002] Wind power generation utilizes the kinetic energy of wind to generate electricity. Wind power drives blades (also called fan blades or propellers) to rotate, and a speed increaser further accelerates the rotation, thus powering a generator. Although wind energy is a renewable energy source, the fluctuating wind volume leads to uncertainty in power generation, resulting in unstable power output and low utilization rates. Furthermore, existing wind power generation devices are large and heavy, with blades and generators positioned high in the air, resulting in high investment costs, installation difficulties, and inconvenient maintenance. If wind power plants are built along bird migration routes, the blades may harm birds. Additionally, wind farms generate significant noise, producing infrasound waves that can have a considerable noise impact on residents living nearby.

[0003] Therefore, the existing technology still needs to be improved and enhanced. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a wind power generation device to solve the problems of existing blade-type wind power generation devices being unable to increase wind speed and being inconvenient to install and maintain.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wind power generation device includes a downwind upper component, a power generation lower component, and a cylinder; the bottom of the cylinder is fixed to the power generation lower component, the top of the cylinder is rotatably connected to the downwind upper component through a slewing support, and the inner cavity of the power generation lower component communicates with the inner cavity of the downwind upper component through the cavity of the cylinder.

[0007] When the upper component turns with the wind, the front end faces the wind and the lower component faces the wind. The air pressure difference generated inside and outside the lower component draws air in from the opening of the lower component, and after passing through the cavity of the cylinder, it is discharged from the grid plate of the upper component. The lower component generates electricity by turbine based on the air drawn in.

[0008] In the aforementioned wind power generation device, the windward assembly includes a windward shell, a hollow support column is provided at the bottom opening of the windward shell, and the bottom of the support column is rotatably connected to the top of the cylinder through a slewing support; a permeable grid plate is provided on the windward side of the windward shell.

[0009] In the aforementioned wind power generation device, the front end of the downwind casing is an arc-shaped surface with a first included angle, and the rear end of the downwind casing is an angled surface with a second included angle.

[0010] In the aforementioned wind power generation device, the first included angle ranges from 30° to 150°, and the second included angle ranges from 10° to 120°.

[0011] In the aforementioned wind power generation device, the windward side of the windward casing includes a top surface, a left side, and a right side, with a permeable mesh plate provided on each of the left and right sides.

[0012] In the wind power generation device, a baffle is provided in the middle of the windward shell, which is used to divide the inner cavity of the windward shell into two cavities; a permeable grid plate corresponds to one cavity, and the two correspond one-to-one.

[0013] In the aforementioned wind power generation device, the windward assembly includes a square wind duct, inside which several windward housings are placed. The air inlet of the wind duct is provided with an flared vent, and the bottom opening of the wind duct is provided with a hollow support ring. The bottom of the support ring is rotatably connected to the top of the cylinder through a slewing support member. The support columns of several windward housings are located inside the ring of the support ring, and the inner cavities of several windward housings are connected to the cylinder through the support ring.

[0014] In the aforementioned wind power generation device, the power generation base assembly includes a base with an opening on one side. Inside the base, there is a generator and a wind shroud. The top of the base has an opening for inserting into the bottom of the cylinder. The air inlet of the wind shroud is connected to the bottom of the cylinder. A turbine is provided at the throat of the wind shroud. When the turbine rotates under the action of wind, it drives the generator to rotate to generate electricity.

[0015] Compared to existing technologies, this invention provides a wind power generation device comprising a windward upper component, a lower power generation component, and a cylindrical body. The bottom of the cylindrical body is fixed to the lower power generation component, and the top of the cylindrical body is rotatably connected to the windward upper component via a slewing support. The inner cavity of the lower power generation component communicates with the inner cavity of the windward upper component through the cavity of the cylindrical body. When the windward upper component turns with the wind, its front end faces the wind and its windward side is aligned with the wind. The air pressure difference generated between the inside and outside of the windward side draws air in from the opening of the lower power generation component, passes through the cavity of the cylindrical body, and is discharged from the grid plate on the windward side of the windward upper component. The lower power generation component generates electricity using the inhaled air. This method eliminates the need for any exposed fan blades, high-altitude installation and maintenance, and utilizes the air pressure difference to drive the turbine, increasing wind speed, improving safety, and simplifying installation and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the wind power generation device provided by the present invention.

[0017] Figure 2 An internal perspective view of the wind power generation device provided by the present invention.

[0018] Figure 3 This is a front view of a first embodiment of the wind-fed up-wind component in the wind power generation device provided by the present invention.

[0019] Figure 4 This is an internal schematic diagram of an embodiment of the wind-following component in the wind power generation device provided by the present invention.

[0020] Figure 5 This is a bottom view of a first embodiment of the downwind component in the wind power generation device provided by the present invention.

[0021] Figure 6 A schematic diagram of the wind direction in Embodiment 1 of the wind power generation device provided by the present invention.

[0022] Figure 7 This is a schematic diagram of the structure of the wind-following component in the wind power generation device provided by the present invention, in Embodiment 2.

[0023] Figure 8 This is an internal perspective and wind direction schematic diagram of Embodiment 2 of the wind power generation device provided by the present invention, showing the windward uphill component. Detailed Implementation

[0024] This invention provides a wind power generation device. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] Please also refer to Figure 1 and Figure 2 This invention provides a wind power generation device, including a windward upper component, a lower power generation component, and a cylindrical body 1. The bottom of the cylindrical body 1 is fixed to the lower power generation component, and the top of the cylindrical body 1 is rotatably connected to the windward upper component via a rotating support 2 (a common existing structure that ensures the windward upper component is in the correct position when turning with the wind). (That is, the windward upper component is installed on the top of the cylindrical body 1 and can rotate back and forth). The inner cavity of the lower power generation component communicates with the inner cavity of the windward upper component through the cavity of the cylindrical body 1. When the windward upper component turns with the wind, the front end of the windward upper component faces the wind (i.e., the front is facing the wind) and the windward side is parallel to the wind direction. The air pressure difference generated inside and outside the windward side draws air in from the opening of the lower power generation component, passes through the cavity of the cylindrical body 1, and is discharged from the grid plate of the windward side of the windward upper component. The lower power generation component drives the turbine to generate electricity based on the drawn-in air.

[0026] This embodiment utilizes Bernoulli's principle. When the upper component turns with the wind, its leeward side faces the wind. The air pressure difference between the inside and outside of this leeward side due to airflow creates a pressure difference, resulting in a lower air pressure outside the upper component than inside. Since the entire wind power generation device is interconnected, with the upper component connected to the lower component, air enters through the opening in the lower component, flows through cylinder 1 (effectively generating a vertical upward wind), and exits from the leeward side of the upper component. The lower component drives the turbine to generate electricity based on the wind generated by the intake air. This eliminates the need for any exposed fan blades, high-altitude installation, and maintenance. It utilizes the pressure difference between the inside and outside air to generate electricity (i.e., a turbine is installed inside the lower component, and the wind drives the turbine), making it safer and easier to install and maintain.

[0027] Please refer to the following: Figures 3 to 6 In Embodiment 1, the windward upper component includes a windward housing 3, and a hollow support column 4 (e.g., at the opening at the bottom of the windward housing 3) is provided. Figure 4 As shown, Figure 4 The mesh plate on the windward side has been removed (to facilitate understanding of the internal structure). The bottom of the support column 4 is rotatably connected to the top of the cylinder 1 via the slewing support 2. The front end of the windward shell 3 is an arc-shaped surface with a first included angle α, and the rear end of the windward shell 3 is an angled surface with a second included angle β (e.g., Figure 5 As shown), the windward side of the casing 3 is provided with a permeable mesh plate 5 (e.g., Figure 3 As shown, specifically, a window is opened on the windward side, and a fixed grid plate 5 is installed in the window.

[0028] It should be understood that the windward side is the side with a mesh plate that allows airflow and generates an air pressure difference. In this embodiment, the left side, right side, top side (i.e., the top surface), and bottom side (the bottom surface) of the windward housing 3 can all serve as windward sides. Therefore, the mesh plate 5 can be installed on any one of the four sides of the windward housing 3, or any two sides can be selected to install one mesh plate 5 each (preferably these two sides are opposite, i.e., the left side and the right side, or the top side and the bottom side). The specific side on which the mesh plate is installed can be set according to the requirements.

[0029] In this first embodiment, taking the left and right sides as the windward sides as an example, the preferred angle range of the first included angle α is 30° to 150°, and the preferred angle range of the second included angle β is 10° to 120°; the first included angle α is larger than the second included angle β. The preferred length ratio of the front end, windward side, and tail of the windward shell 3 is L1:L2:L3 = 1:5:3. The support column 4 is aligned with the middle of L2 of the windward side. The windward side has the longest length, and the front end has the shortest length. This streamlined design allows the windward shell 3 to be quickly deflected by the wind when the wind blows on the windward side, always facing the wind from the front end, with the windward side facing the wind (e.g., the windward side is in the wind). Figure 6 The wind direction indicated by the arrow above creates an air pressure difference between the inside and outside of the downwind side, and the wind at the bottom ( Figure 6 (As indicated by the thick arrow) it exits from the side grid plate 5.

[0030] If two grid plates 5 are set on the left and right sides respectively, a baffle 6 needs to be set in the middle of the windward housing 3. The baffle 6 is used to divide the inner cavity of the windward housing 3 into two cavities. In this way, when the air is discharged, it is discharged from the two cavities. The cavities are set one-to-one with the permeable grid plates to ensure that the air flows along the set path and avoids the air taking shortcuts.

[0031] Please continue reading. Figure 1 and Figure 2 The power generation base assembly includes a base 7 with an opening on one side. Inside the base 7, there is a generator 8 and a wind shroud 9. The top of the base 7 has an opening for inserting into the bottom of the cylinder 1. The air inlet of the wind shroud 9 is connected to the bottom of the cylinder 1. A turbine 10 is provided at the throat of the wind shroud 9. When the turbine 10 rotates under the action of wind, it drives the generator 8 to rotate to generate electricity.

[0032] When the natural wind blows horizontally towards the downwind housing 3, the downwind housing 3 swings so that its downwind side is in the wind and its front end faces the wind. Due to the air flow, an air pressure difference is generated between the inside and outside of the downwind side. The air pressure outside is less than the air pressure inside. Based on Bernoulli's principle, the base 7, the cylinder 1 and the inner cavity of the downwind housing 3 are connected. The air at the bottom will enter the wind cover 9 through the opening of the base 7, pass through the cylinder 1 and be discharged from the grid plate 5 of the downwind housing 3.

[0033] Because the wind shroud 9 has a large air inlet and outlet but a small throat, the air is effectively compressed at the throat, resulting in a stronger wind. Utilizing the horizontal wind force to generate an upward vertical wind, the turbine 10 rotates under the influence of this vertical wind, driving the generator 8 to generate electricity. In practice, the generator 8 can be connected to the input of a rectifier circuit, and the output of the rectifier circuit can be connected to a transmission line. The electricity generated by the generator 8 is rectified by the rectifier circuit before being transmitted, which can be used directly to power appliances for independent power supply; alternatively, the generated electricity can be fed into the grid for grid-connected power generation. Even a light breeze of level 1 or higher can generate electricity, improving the utilization rate of wind energy.

[0034] Preferably, the base 7 can be adopted. Figure 1 The structure shown has three perpendicular sides on the base plate of the base 7. The upper part of the sides is joined to a trapezoidal plane, and the top of the base is a square plane. This forms a cavity structure that gradually tapers upwards, which can increase the pressure difference of the wind. In specific implementations, the base 7 can also adopt other shapes, as long as it meets the structural design of the cavity being larger at the bottom and smaller at the top, can support the cylinder and the components facing the wind, and has a stable center of gravity and will not tip over. The shape and material of the base are not limited here.

[0035] In Embodiment 2, the downwind assembly can also be adopted. Figure 7 (A diagram with the top cover removed for easier understanding of the internal structure) and Figure 8 (Internal perspective view, for easy understanding of the positional relationship between the support ring 14 and the support column) The structure shown uses multiple windward housings 3 from Embodiment 1 to increase wind power. The windward upper component includes a square air duct 11, inside which several windward housings 3 are placed. The air inlet 12 of the air duct 11 (the air outlet is opposite to the air inlet, and the air is discharged in the direction indicated by the dotted arrow) is provided with a flared vent 13. A hollow support ring 14 is provided at the opening at the bottom of the air duct 11. The bottom of the support ring 14 is rotatably connected to the top of the cylinder through a slewing support. The support columns 4 of several windward housings 3 are located inside the ring of the support ring 14, so that the inner cavity of several windward housings 3 can be connected to the cylinder through the support ring.

[0036] Because the support ring 14 needs to surround all the support columns of the downwind housing 3, the diameter of the support ring 14 is relatively large. In Embodiment 2, the dimensions of the cylinder and base 7 are adapted to the support ring 14 and are larger than those of the cylinder 1 and base in Embodiment 1. Compared with Embodiment 1, the flared vent 13 at the air inlet 12 makes the cross-sectional area of ​​the air inlet larger, while the cross-sectional area of ​​the intermediate air duct in the air duct 11 is smaller. This increases the wind speed in the intermediate air duct, making it greater than the outside wind speed. Based on this, multiple downwind housings 3 (3 in this embodiment) are set in the air duct 11, dividing the intermediate air duct into multiple smaller air ducts (the air inlet and outlet directions are as follows). Figure 8As shown by the dashed arrow, the windward side of the downwind shell 3 will generate a greater wind pressure difference, resulting in a greater wind speed inside the shell. The wind speed inside the duct is higher than the wind speed of the natural wind outside. This structure can artificially increase the wind speed in a local area, that is, increase the wind speed of the natural wind locally, thereby increasing the power generation and improving the utilization rate of wind power generation.

[0037] In practical implementation, the cross-section of the air duct 11 can be adopted. Figure 7 The square shape shown can also be designed as a circle or other shapes, taking into account factors such as geographical environment, wind strength, wind speed requirements, and cost. The shape of the wind duct is not limited here. The size of the wind power generation device can be set according to requirements, for example... Figure 1 The structure shown can be configured as a small portable wind power generation device with an overall height as small as tens of centimeters; it can also be configured as a medium or large size and fixed at the location where it needs to be installed, with the overall height ranging from several meters to tens of meters. The width (such as the width of the cylinder, the width of the base, etc.) can be scaled proportionally. There is no limitation on the size of the wind power generation device here.

[0038] In summary, the wind power generation device provided by this invention allows the following: When a horizontal natural wind blows towards the windward casing, the casing swings to align its windward side with the wind, with the front end facing the wind. The air pressure difference between the inside and outside of the windward side due to airflow results in a lower air pressure outside compared to the inside. Based on Bernoulli's principle, the base, cylinder, and the inner cavity of the windward casing are interconnected. Air enters from the bottom through the opening in the base, passes through the cylinder, and exits through the mesh plate of the windward casing. Utilizing the horizontal wind force to generate an upward vertical wind, the turbine rotates under the action of the vertical wind, thereby driving the generator to rotate and generate electricity. This design eliminates the need for any exposed fan blades and complex transmission mechanisms, resulting in a simple structure and low cost. The generator, turbine, and other devices are installed close to the ground rather than in the air, eliminating the need for high-altitude operations and allowing for all-terrain installation. Installation is convenient and maintenance is simple. The upward wind speed can be greater than the horizontal natural wind, resulting in high wind power utilization efficiency. Even with relatively weak natural winds, it generates electricity with low noise, making it safe and environmentally friendly. It can supply power independently or be connected to the grid, making it suitable for widespread application.

[0039] The above division of functional modules is only for illustrative purposes. In practical applications, the above functions can be assigned to different functional modules as needed, that is, divided into different functional modules to complete all or part of the functions described above.

[0040] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A wind power generation device, characterized in that, It includes a windward upper component, a power generation lower component, and a cylinder; the bottom of the cylinder is fixed to the power generation lower component, the top of the cylinder is rotatably connected to the windward upper component through a slewing support, and the inner cavity of the power generation lower component communicates with the inner cavity of the windward upper component through the cavity of the cylinder. When the upper component turns with the wind, the front end faces the wind and the lower component faces the wind. The air pressure difference generated inside and outside the lower component draws air in from the opening of the lower component, and after passing through the cavity of the cylinder, it is discharged from the grid plate of the upper component. The lower component generates electricity by turbine based on the air drawn in. The following windward assembly includes a following windward housing, and a hollow support column is provided at the bottom opening of the following windward housing. The bottom of the support column is rotatably connected to the top of the cylinder through a slewing support. The following windward surface of the following windward housing is provided with a permeable mesh plate. The following windward surface is the side with the mesh plate that allows air to pass through and generates an air pressure difference. The front end of the windward shell is an arc-shaped surface with a first included angle, and the rear end of the windward shell is an angled surface with a second included angle; the length ratio of the front end, the windward surface, and the rear end of the windward shell is 1:5:

3.

2. The wind power generation device according to claim 1, characterized in that, The first included angle has an angle range of 30° to 150°, and the second included angle has an angle range of 10° to 120°.

3. The wind power generation device according to claim 1, characterized in that, The windward side of the casing includes a top surface, a left side, and a right side; a permeable mesh plate is provided on each of the left and right sides.

4. The wind power generation device according to claim 3, characterized in that, A baffle is provided in the middle of the windward housing, which is used to divide the inner cavity of the windward housing into two cavities; a ventilated mesh plate corresponds to one cavity, and the two correspond one-to-one.

5. The wind power generation device according to claim 1, characterized in that, The following wind assembly includes a square air duct, inside which several following shells are placed. The air inlet of the air duct is provided with an flared vent, and the bottom opening of the air duct is provided with a hollow support ring. The bottom of the support ring is rotatably connected to the top of the cylinder through a slewing support. The support columns of several following shells are located inside the ring of the support ring, and the inner cavities of several following shells are connected to the cylinder through the support ring.

6. The wind power generation device according to claim 1 or 5, characterized in that, The power generation base assembly includes a base with an opening on at least one side. The base contains a generator and a wind shroud. The top of the base has an opening for inserting into the bottom of the cylinder. The air inlet of the wind shroud is connected to the bottom of the cylinder. A turbine is provided at the throat of the wind shroud. When the turbine rotates under the action of wind, it drives the generator to rotate to generate electricity.

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