A wind power plant

Abstract

This application discloses a wind power generation device, comprising: a hollow tower base vertically installed on the ground, the horizontal cross-section of which gradually decreases from bottom to top; a rotating shaft disposed on the vertical axis of the tower base; a speed regulating device connected to the lower end of the rotating shaft, and a generator set connected to the lower end of the speed regulating device; a rotating module installed at the upper end of the tower base, and a top rod coaxial with the tower base installed at the upper end of the rotating module; the rotating module includes a hub, multiple spoke shafts extending radially outward from the hub in the same horizontal plane, an angle adjustment module and blades disposed on each spoke shaft, and each spoke shaft being connected to the top of the top rod via at least one cable. This wind power generation device has good stability, uses less material, has low starting torque, low cost, simple structure, and is easy to install.

Description

Technical Field

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

[0002] The blades of existing wind turbines generally rotate in a vertical plane perpendicular to the horizontal plane. The plane formed by the rotation of the blades is parallel to the tower base (a vertical rod installed on the ground) that supports the blades. This design flaw requires an external starting mechanism, and the initial wind force is relatively large. Moreover, it cannot work under strong winds and has to shut down and abandon the wind, resulting in low wind energy utilization efficiency. At the same time, since the tower base is generally a uniformly round rod, the center of gravity of the entire wind turbine is relatively high, resulting in poor stability. Summary of the Invention

[0003] This application discloses a wind power generation device, which aims to solve the problems of existing wind power generation devices being prone to collapse due to their high center of gravity and the low efficiency of wind energy utilization.

[0004] The technical solution of this application is as follows:

[0005] A wind power generation device includes: a hollow tower base vertically installed on the ground, the horizontal cross-section of the tower base gradually decreasing from bottom to top, a rotating shaft arranged on the vertical axis of the tower base; a speed regulating device connected to the lower end of the rotating shaft, and a generator set connected to the lower end of the speed regulating device; a rotating module installed at the upper end of the tower base, and a top rod coaxial with the tower base installed at the upper end of the rotating module;

[0006] The rotating module includes a hub, a plurality of spoke shafts extending outward from the hub in a radial pattern on the same horizontal plane, an angle adjustment module and blades set on each spoke shaft, and each spoke shaft is connected to the top of the top rod by at least one cable to reduce the bending strength of the hub.

[0007] The rotating module adjusts the wind energy to a constant speed through the speed regulating device and transmits it to the power generation system to output electrical energy.

[0008] In some embodiments, the rotating module further includes a gear assembly built into the hub, the gear assembly being a structure composed of a worm gear and a worm shaft capable of driving each spoke shaft to rotate; when the spoke shaft rotates, it drives the blades to rotate, thereby controlling the windward angle of the blades and changing the force-bearing area of ​​the blades, thus enabling operation at different wind speeds.

[0009] In some embodiments, the rotating module further includes a frame-shaped bracket through which each of the spoke shafts passes; the blades are divided into two parts with unequal upper and lower areas by the spoke shafts. When wind blows over the blades, the blades on the reverse torque plane rotate around the spoke shaft in a horizontal direction without generating force, while the blades on the forward torque plane rotate around the spoke shaft in a vertical direction, thereby generating torque and causing the rotating module to rotate.

[0010] In some embodiments, the wind power generation device further includes sensors and a controller built into the tower base, the sensors being used to sense the wind speed level and send it to the controller, which controls the rotation of the spoke shaft.

[0011] In some embodiments, the cross-section of the tower base is an annular cross-section that gradually decreases from bottom to top.

[0012] Technical effects of this application:

[0013] 1. The cross-section of the wind power generation tower base gradually increases from bottom to top, which lowers the center of gravity of the tower base. At the same time, the speed control device and generator set are set at the lower end of the inner side of the tower base, making the center of gravity of the entire wind power generation device even lower, enhancing stability, preventing tower collapse and reducing losses.

[0014] 2. By installing at least one cable on the support of the blade assembly, the weight of the blade is distributed, reducing the bending strength of the hub bearing;

[0015] 3. The blades can intelligently adjust their angle of attack as the wind direction changes, ensuring stable power output.

[0016] 4. The blade assembly has a simple structure and uses lightweight materials, making it easy to assemble. The modular design reduces transportation difficulties and facilitates on-site construction. Attached Figure Description

[0017] Figure 1 This is the front view of the wind power generation device;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 This is a perspective view of the wind power generation device;

[0020] Figure 4 for Figure 2 Enlarged view of point A in the image;

[0021] Figure 5 for Figure 3 Enlarged view of point B in the image;

[0022] Figure 6 for Figure 3Enlarged view of point C. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] refer to Figures 1 to 6 A wind power generation device includes: a hollow tower base 10 vertically installed on the ground, the horizontal cross-section of which gradually decreases from bottom to top; a rotating shaft 11 disposed on the vertical axis of the tower base; a speed regulating device 12 connected to the lower end of the rotating shaft; a generator set 13 connected to the lower end of the speed regulating device 12; a rotating module installed at the upper end of the tower base; and a top rod 40 coaxial with the tower base installed at the upper end of the rotating module. The purpose of designing the horizontal cross-section of the tower base 10 to gradually decrease from bottom to top is to lower the center of gravity of the tower base 10, increasing its stability. Furthermore, the location of the speed regulating device 12 and the generator set 13 at the bottom inner side of the tower base 10 also lowers the center of gravity of the entire wind power generation device as much as possible, making it less prone to overturning and improving stability.

[0026] The rotating module includes a hub 20, a plurality of spoke shafts 32 extending outward from the hub in a radial pattern on the same horizontal plane, an angle adjustment module (not shown) and a blade 31 set on each spoke shaft, and each spoke shaft is connected to the top of the top rod 40 by at least one cable 41 to reduce the bending strength of the hub 20.

[0027] The rotating module adjusts the wind energy to a constant speed through the speed regulating device and transmits it to the power generation system to output electrical energy.

[0028] The rotating module also includes a gear assembly (not shown) built into the hub. The gear assembly is a structure composed of a worm gear and a worm shaft that can drive each spoke shaft to rotate. When the spoke shaft 32 rotates, it drives the blade 31 to rotate, thereby controlling the windward angle of the blade and changing the force-bearing area of ​​the blade, so as to achieve operation under different wind speeds.

[0029] In some embodiments, the rotating module further includes a frame-shaped bracket 33 through which each spoke shaft 32 passes; the blade 31 is divided into two parts with unequal upper and lower areas by the spoke shaft. When the wind blows over the blade, the blade 31 on the reverse torque plane rotates around the spoke shaft 32 in a horizontal direction without generating force, while the blade on the forward torque plane rotates around the spoke shaft 32 in a vertical direction, thereby generating torque and causing the rotating module to rotate.

[0030] In some embodiments, the wind power generation device further includes a sensor (not shown) and a controller (not shown) built into the tower base. The sensor is used to sense the wind force level and send it to the controller, which controls the rotation of the spoke shaft 32.

[0031] The working principle of this application is the same as that of wind power generation, but compared with traditional wind power generation, this wind power generation device has the following advantages:

[0032] 1. The cross-section of the wind power generation tower base gradually increases from bottom to top, which lowers the center of gravity of the tower base. At the same time, the speed control device and generator set are set at the lower end of the inner side of the tower base, making the center of gravity of the entire wind power generation device even lower, enhancing stability, preventing tower collapse and reducing losses.

[0033] 2. By installing at least one cable on the support of the blade assembly, the weight of the blade is distributed, reducing the bending strength of the hub bearing;

[0034] 3. The blades can intelligently adjust their angle of attack as the wind direction changes, ensuring stable power output.

[0035] 4. The blade assembly has a simple structure and uses lightweight materials, making it easy to assemble. The modular design reduces transportation difficulties and facilitates on-site construction.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind power plant, characterized in that include: A hollow tower base is vertically installed on the ground. The horizontal cross-section of the tower base gradually decreases from bottom to top. A rotating shaft is set on the vertical axis of the tower base. A speed regulating device is connected to the lower end of the rotating shaft, and a generator set is connected to the lower end of the speed regulating device. A rotating module is installed at the upper end of the tower base, and a top rod coaxial with the tower base is installed at the upper end of the rotating module. The rotating module includes a hub, a plurality of spoke shafts extending outward from the hub in a radial pattern on the same horizontal plane, an angle adjustment module and blades set on each spoke shaft, and each spoke shaft is connected to the top of the top rod through at least one cable to reduce the bending strength of the hub. The rotating module adjusts the wind energy to a constant speed through the speed regulating device and transmits it to the power generation system to output electrical energy.

2. The wind power plant according to claim 1, characterized in that The rotating module also includes a gear assembly built into the hub. The gear assembly is a structure composed of a worm gear and a worm shaft that can drive each spoke shaft to rotate. When the spoke shaft rotates, it drives the blade to rotate. The angle adjustment module controls the windward angle of the blade to change the force-bearing area of ​​the blade, thereby enabling it to operate at different wind speeds.

3. The wind power plant according to claim 2, wherein The rotating module also includes a frame-shaped bracket through which each spoke shaft passes; the blade is divided into two parts with unequal upper and lower areas by the spoke shaft. When the wind blows over the blade, the blade on the reverse torque plane rotates around the spoke shaft in a horizontal direction without generating force, while the blade on the forward torque plane rotates around the spoke shaft in a vertical direction, thereby generating torque and causing the rotating module to rotate.

4. The wind power plant according to claim 2, wherein The wind power generation device also includes sensors and a controller built into the tower base. The sensors are used to sense the wind speed and send the data to the controller, which controls the rotation of the spoke shaft.

5. The wind power plant according to claim 1, wherein The cross-section of the tower base is an annular section that gradually decreases from bottom to top.

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