Wind power generation device

Abstract

The wind power generation device comprises a support, a rotating shaft and a wind wheel, the wind wheel converts wind energy into rotating mechanical energy of the rotating shaft, the rotating shaft drives a gear disc fixed to the rotating shaft, and the rotating shaft is in transmission connection with a worm and gear reducer and a magnetic suspension generator in sequence through the gear disc to achieve conversion from mechanical energy to electric energy. The rotating speed can be increased by using the worm and gear speed reducer, so that the magnetic suspension generator can work at a more suitable rotating speed, and the power generation efficiency is improved; a wind speed sensor for monitoring wind speed changes in real time is arranged on the wind wheel, movable blades are arranged on the two sides of each fixed wind blade of the wind wheel respectively, and the movable blades can achieve dynamic adjustment of the inclination angles of the movable blades relative to the fixed wind blades under the action of an electric push rod, so that the wind power generation device can work in the optimal state at different wind speeds, and the wind power generation efficiency is improved. The capturing efficiency of wind energy is optimized, the wind energy utilization rate and conversion rate are improved, and the output power of the generator is kept constant in cooperation with a gear disc and a worm and gear speed reducer.

Description

Technical Field

[0001] The present application relates to the technical field of renewable energy power generation equipment, and in particular to a wind power generation device. Background Art

[0002] As energy crisis and environmental pollution become increasingly serious, the urgent demand for renewable, clean, environmentally friendly and carbon-free electricity is increasing. As one of the renewable energy sources, wind energy is very suitable for coastal islands, grassland pastoral areas, mountainous areas and plateau areas to use wind power generation in accordance with local conditions.

[0003] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. Chinese invention patent CN202210273330.2 discloses a wind power generation device, which includes a wind wheel mechanism and a dual-shaft generator. The wind wheel mechanism includes a front wind wheel and a rear wind wheel arranged coaxially; a first rotor and a second rotor are respectively arranged at both ends of the dual-shaft generator, the front wind wheel is connected to the first rotor through a first rotating shaft, and the rear wind wheel is connected to the second rotor through a second rotating shaft, and the front wind wheel and the rear wind wheel can be driven to rotate by wind at the same time. When the front wind wheel rotates, it drives the first rotating shaft connected to it to rotate, driving the first rotor in the dual-shaft generator to rotate to generate electricity, and when the rear wind wheel rotates, it drives the second rotating shaft connected to it to rotate, driving the second rotor in the dual-shaft generator to rotate to generate electricity. Therefore, when the above-mentioned front wind wheel and rear wind wheel rotate at the same time, the first rotor and the second rotor of the dual-shaft generator rotate at the same time to generate electricity, thereby increasing the power generation, and since the front wind wheel and the rear wind wheel can be jointly arranged on the pillar of the same wind power generation device, the number of wind power generation devices can be greatly reduced, so that the area required for wind power generation is reduced. In addition, the solution disclosed in the above patent document also carries out structural design for the front blade: the front blade includes an inner blade span, a middle blade span and an outer blade span which are connected in sequence, and the maximum chord length of the middle blade span is smaller than the maximum chord length of the outer blade span so as to guide the fluid to flow to the rear wind wheel. When the airflow flows through the middle blade span of the front blade, the airflow that is not blocked by the middle blade span of the front blade can continue to flow to the rear wind wheel. The kinetic energy loss of this part of the airflow is small, so it can effectively drive the rear wind wheel to rotate, thereby increasing the rotation speed of the rear wind wheel, thereby improving the overall power generation efficiency of the wind wheel assembly.

[0004] Although the wind power generation device disclosed in the above patent document realizes the flow of air not blocked by the front blades to the rear wind wheel through the structural design of the front blades, and realizes the simultaneous rotation of the front and rear wind wheels to generate electricity, thereby improving the overall power generation efficiency, it still has the following defects: the magnitude of the wind force cannot be accurately controlled over time, the fixed-angle front and rear blades set in the scheme are difficult to adapt to different wind speeds and directions, and the wind energy capture efficiency cannot be optimized under different wind speeds, resulting in low utilization of wind energy and unstable output power of the wind power generation equipment.

[0005] Therefore, it is necessary to propose a new technical solution to solve the problems existing in the prior art. Summary of the invention

[0006] The present application provides a wind power generation device to solve the problem that the existing wind power generation device cannot optimize the wind energy capture efficiency under different wind speeds, resulting in low wind energy utilization and unstable output power of the wind power generation equipment.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] The present application provides a wind power generation device, comprising a vertically arranged bracket, a mounting support is arranged on the top of the bracket, a bottom of the bracket is connected to a mounting base, a bearing mounting seat is arranged on the mounting support, a rotating shaft is horizontally arranged in the bearing mounting seat, a wind wheel is fixed on the rotating shaft, the wind wheel comprises a plurality of fixed wind blades, a wind speed sensor for monitoring wind speed is arranged on the wind wheel, the fixed wind blades are fixedly connected to the rotating shaft through leaf brackets, the length direction of the fixed wind blades is parallel to the length direction of the rotating shaft, movable blades are respectively arranged on both sides of the fixed wind blades along the width direction thereof, the movable blades can rotate relative to the fixed wind blades under the drive of an angle adjustment mechanism, so as to realize the angle adjustment between the movable blades and the fixed blades, the angle adjustment mechanism comprises an electric push rod, the electric push rod is connected to one end of the movable blade, and the other end of the movable blade is rotationally connected to the fixed wind blade;

[0009] A gear plate is fixed on the rotating shaft, the gear plate is drivingly connected to the input end of the worm gear reducer, and the output end of the worm gear reducer is drivingly connected to the rotor of the magnetic levitation generator; a generator seat is arranged on the mounting support, and a mounting frame for fixing the worm gear reducer and the magnetic levitation generator is arranged on the generator seat;

[0010] It also includes a control system, which is connected to the wind speed sensor signal and outputs a control signal to the electric push rod according to the wind speed signal obtained from the wind speed sensor. The electric push rod drives the movable blade to rotate according to the control signal.

[0011] Further in the above technical solution, one or more exhaust vent assemblies are arranged on the working surface or non-working surface of the fixed wind blade, and the exhaust vent assembly includes an exhaust vent arranged on the fixed wind blade, a cover plate adapted to the exhaust vent, and a driver for driving the cover plate to move to open or close the exhaust vent; the output end of the driver is connected to the cover plate, and the cover plate can move along the surface of the fixed wind blade under the drive of the driver to open or close the exhaust vent; or, the cover plate can rotate relative to the surface of the fixed wind blade under the drive of the driver to open or close the exhaust vent.

[0012] Furthermore, the driver is an electric push rod or a ball screw driver, one end of the cover is hinged to the working surface or non-working surface of the fixed wind blade, and the other end of the cover is connected to the output end of the driver. The driver can drive the cover to rotate relative to the working surface or non-working surface of the fixed wind blade to open or close the exhaust port.

[0013] Furthermore, the driver is an electric push rod or a ball screw driver, and the cover plate is slidingly matched with the surface of the fixed wind blade. The driver can drive the cover plate to translate along the working surface or non-working surface of the fixed wind blade to open or close the exhaust port.

[0014] Furthermore, a wind direction sensor is provided on the fixed wind blade, and the control system is connected to the wind direction sensor signal. The control system outputs an opening and closing control signal to the driver according to the wind direction signal obtained from the wind direction sensor to realize opening and closing control of the exhaust outlet; the control system outputs an opening control signal to the driver according to the wind speed signal obtained from the wind speed sensor to realize control of the conduction area of ​​the exhaust outlet.

[0015] Furthermore, the fixed wind blades correspond to the leaf brackets one by one, a plurality of leaf brackets are radially distributed with the rotation axis as the center, a plurality of leaf brackets are located in the same plane, and the angles between any two adjacent leaf brackets are the same.

[0016] Furthermore, the two movable blades are symmetrically arranged on both sides of the fixed wind blade, the two movable blades have the same shape and size, and the fixed wind blade and the movable blade are both long strips with curved cross-sections.

[0017] Furthermore, the curvature of the fixed wind blades is greater than the curvature of the movable blades.

[0018] Furthermore, the outer convex surface of the fixed wind blade is fixedly connected to the blade bracket.

[0019] Furthermore, the wind wheel includes eight fixed wind blades, which are arranged in a clockwise direction. The eight fixed wind blades are respectively recorded as: a first fixed wind blade, a second fixed wind blade, a third fixed wind blade, a fourth fixed wind blade, a fifth fixed wind blade, a sixth fixed wind blade, a seventh fixed wind blade and an eighth fixed wind blade.

[0020] Furthermore, the first fixed wind blade and the fifth fixed wind blade are centrally symmetrical about the center of the rotating shaft, two electric push rods are arranged on the outer convex surface of the first fixed wind blade, and two electric push rods are arranged on the outer convex surface of the fifth fixed wind blade.

[0021] Furthermore, the output ends of the two electric push rods installed on the first fixed wind blade are respectively connected to the two movable blades on the second fixed wind blade, the two movable blades on the second fixed wind blade are respectively connected to the two movable blades on the third fixed wind blade through connecting rods, the two movable blades on the third fixed wind blade are respectively connected to the two movable blades on the fourth fixed wind blade through connecting rods, and the two movable blades on the fourth fixed wind blade are respectively connected to the two movable blades on the fifth fixed wind blade through connecting rods; the two electric push rods installed on the first fixed wind blade can drive the movable blades on the first to fifth fixed wind blades to rotate clockwise in sequence under the driving action of the connecting rod.

[0022] Furthermore, the output ends of the two electric push rods installed on the fifth fixed wind blade are respectively connected to the two movable blades on the sixth fixed wind blade, the two movable blades on the sixth fixed wind blade are respectively connected to the two movable blades on the seventh fixed wind blade through connecting rods, the two movable blades on the seventh fixed wind blade are respectively connected to the two movable blades on the eighth fixed wind blade through connecting rods, and the two movable blades on the eighth fixed wind blade are respectively connected to the two movable blades on the first fixed wind blade through connecting rods; the two electric push rods installed on the fifth fixed wind blade can drive the fifth fixed wind blade to rotate clockwise in sequence to the movable blades on the first fixed wind blade under the driving action of the connecting rod.

[0023] Furthermore, the two electric push rods installed on the first fixed wind blade and the two electric push rods installed on the fifth fixed wind blade are both connected to the control system signal.

[0024] Furthermore, two gear plates are fixed on the rotating shaft, namely the first gear plate and the second gear plate. The two gear plates are arranged in parallel and spaced apart along the length direction of the rotating shaft. The radius of the first gear plate is larger than the radius of the second gear plate. The second gear plate is close to the generator seat. The generator seat is a disc-shaped structural member. The disc surface of the generator seat is parallel to the disc surface of the second gear plate. The first gear plate is transmission-connected to the input end of the first worm gear reducer, and the output end of the first worm gear reducer is transmission-connected to the rotor of the first magnetic levitation generator; the second gear plate is transmission-connected to the input end of the second worm gear reducer, and the output end of the second worm gear reducer is transmission-connected to the rotor of the second magnetic levitation generator; the first worm gear reducer, the first magnetic levitation generator, the second worm gear reducer and the second magnetic levitation generator are all fixedly mounted on the mounting frame of the generator seat.

[0025] Furthermore, a mounting hole is opened in the middle of the generator seat, and the generator seat is fixedly connected to the outer wall of the bearing mounting seat through the mounting hole, and the rotating shaft passes through the mounting hole and is adaptively connected to the bearing mounting seat.

[0026] Furthermore, two groups of bearings are arranged relatively spaced apart in the bearing mounting seat, and the two groups of bearings are rotatably connected to the outer peripheral surface of the rotating shaft; a thrust bearing is also arranged in the bearing mounting seat and is mounted to the end of the rotating shaft.

[0027] Compared with the prior art, this application has at least the following beneficial effects:

[0028] 1. A wind power generation device provided in the present application mainly includes a bracket, a rotating shaft and a wind wheel. The wind wheel converts wind energy into rotational mechanical energy of the rotating shaft. The vertically arranged bracket and the bottom mounting base provide a stable support to ensure the stability of the wind turbine generator set under the action of wind. The design of the bearing mounting seat and the rotating shaft ensures the smooth rotation of the wind wheel and reduces the energy loss caused by vibration; the rotating shaft drives the gear plate fixed thereon, and is sequentially connected with the worm gear reducer and the magnetic levitation generator through the gear plate to realize the conversion of mechanical energy into electrical energy. Among them, the use of the worm gear reducer can increase the rotation speed, so that the magnetic levitation generator can be operated at a higher speed. The wind turbine operates at an appropriate speed to improve power generation efficiency. The contactless structure of the magnetic levitation generator reduces mechanical wear, improves the reliability and life of the generator, and helps maintain the stability of the output power. In the present application, the fixed wind blades on the wind wheel are fixedly connected to the rotating shaft through the blade bracket. The length direction of the fixed wind blades is parallel to the length direction of the rotating shaft. The fixed wind blades are respectively provided with movable blades on both sides along the width direction. The movable blades can rotate relative to the fixed wind blades under the drive of the angle adjustment mechanism, thereby realizing the angle adjustment between the movable blades and the fixed blades. The control system monitors the wind speed changes in real time through the wind speed sensor, and then controls the angle adjustment. The mechanism timely adjusts the angle of the movable blades, so that the device can dynamically adjust the inclination angle of the movable blades according to the change of wind speed, so that the wind power generation device can work in the best state under different wind speeds, optimize the capture efficiency of wind energy, and improve the utilization rate and conversion rate of wind energy; in addition, the arrangement of the fixed wind blades in the present application is different from the arrangement of the wind blades in traditional wind power generation equipment. The length direction of the wind blades in traditional wind power generation equipment is perpendicular to the rotation axis. During the application process, there is a problem of short-term imbalance due to the change of wind direction, and due to the change of wind speed and the twisting of the wind blades during the change of wind direction, the power generation voltage is either high or low and is not stable enough, and it will fail when the wind is too strong. Speed ​​will lose the power generation effect, while in the present application, the length direction of the fixed wind blades is parallel to the rotation axis. This arrangement makes the present application unaffected by the movement of wind direction and can accept wind from any direction. The speed is adjusted by the gear plate and the worm gear reducer to maintain the relatively uniform speed of the generator set and ensure the voltage balance. Therefore, the wind power generation device provided by the present application optimizes the wind energy capture efficiency through the control system, wind speed sensor and movable blades, improves the utilization rate of wind energy, and cooperates with the gear plate and the worm gear reducer to help maintain the constant output power of the generator, thereby improving the overall performance and economy of the wind power generation device.

[0029] 2. The present application provides a wind power generation device in which the working surface or non-working surface of the fixed wind blade is also provided with one or more exhaust vent assemblies. The setting of the exhaust vent assemblies can dynamically adjust the wind resistance under different wind speeds. When the wind acts on the working surface of the fixed wind blade, the exhaust vent is closed, and the fixed wind blade can receive the maximum wind force; when the wind acts on the non-working surface, the exhaust vent is opened to reduce the headwind resistance and the load on the fixed wind blade, thereby reducing energy loss, improving power generation efficiency, and making full use of wind resources to generate the maximum driving force. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 creative work. It should be understood that the specific shapes and structures shown in the drawings should not usually be regarded as limiting conditions for implementing the present application; for example, based on the technical concepts and exemplary drawings disclosed in the present application, those skilled in the art are able to easily make routine adjustments or further optimizations to the increase / decrease / attribution division, specific shapes, positional relationships, connection methods, and dimensional ratios of certain units (components).

[0031] Figure 1 A schematic diagram of the structure of a wind wheel part in a wind power generation device provided by the present application in one embodiment;

[0032] Figure 2 It is a front view structural schematic diagram of a wind wheel part in a wind power generation device provided by the present application in one embodiment;

[0033] Figure 3 The diagram is a top view of the structure of a wind power generation device provided by the present application in one embodiment.

[0034] Description of reference numerals:

[0035] 1. Bracket; 2. Mounting support; 3. Bearing; 4. Thrust bearing; 5. Rotating shaft; 6. Generator base; 7. First gear plate; 8. First worm gear reducer; 9. First magnetic levitation generator; 10. Second gear plate; 11. Second worm gear reducer; 12. Second magnetic levitation generator; 13. Leaf bracket; 14. Fixed fan blade; 15. Movable blade; 16. Angle adjustment mechanism; 17. Exhaust port; 18. Connecting rod. DETAILED DESCRIPTION

[0036] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0037] In the description of this application: unless otherwise specified, "plurality" means two or more. The terms "first", "second", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0038] The terms such as "upper", "lower", "left", "right", "middle", etc. used in this application are usually used to facilitate intuitive understanding by comparing with the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this application, changes in these relative positional relationships should also be regarded as the scope of this application.

[0039] The present application provides a wind power generation device, the functional structure of which is used to realize wind energy harvesting, including: a vertically arranged bracket 1, the bottom of the bracket 1 is connected to the mounting foundation, a mounting support 2 is arranged on the top of the bracket 1, a bearing mounting seat is arranged on the mounting support 2, a rotating shaft 5 is arranged in the bearing mounting seat, the rotating shaft 5 is arranged horizontally, and a wind wheel is fixedly installed at one end of the rotating shaft 5 away from the mounting support 2. The wind wheel includes a plurality of leaf brackets 13, each of which is equipped with a fixed wind blade 14, and the plurality of leaf brackets 13 are evenly distributed on the rotating shaft in a radial shape, and the angles between any two adjacent leaf brackets 13 are the same, and the root of the leaf bracket 13 is fixedly connected to the rotating shaft 5, such as Figure 1 , 3 The wind wheel can rotate with the wind and drive the rotating shaft 5 to rotate. The wind wheel and the rotating shaft 5 are key components for converting wind energy into mechanical energy.

[0040] In the present application, two sets of bearings 3 are arranged at a relative interval in the bearing mounting seat, and the two sets of bearings 3 are adapted to be rotatably connected with the outer peripheral surface of the rotating shaft 5; the bearing mounting seat is also provided with a thrust bearing 4 adapted to be installed with the end of the rotating shaft 5. The arrangement of the two sets of bearings can share the load of the rotating shaft 5, reduce the pressure of a single bearing, and improve the overall load-bearing capacity. The arrangement of the thrust bearing 4 can effectively control the axial displacement, avoid the sliding and instability of the rotating shaft 5, thereby improving the stability and accuracy of the system. At the same time, the arrangement of the two sets of bearings helps to maintain the centering of the rotating shaft 5, reduce the vibration and noise caused by the eccentricity of the shaft, reduce friction, reduce wear, and extend the service life of the device.

[0041] In order to convert the rotational mechanical energy of the rotating shaft 5 and transmit it to the generator to achieve wind power generation, the present application also fixes two gear plates on the rotating shaft 5, namely: a first gear plate 7 and a second gear plate 10. The first gear plate 7 and the second gear plate 10 are relatively spaced apart and arranged on the rotating shaft 5. The radii of the two gear plates are different. The first gear plate 7 is transmission connected to the input end of the first reducer, and the output end of the first reducer is connected to the rotor of the first generator. The second gear plate 10 is transmission connected to the input end of the second reducer, and the output end of the second reducer is connected to the rotor of the second generator. The first generator and the second generator are both arranged on a generator seat 6, and the generator seat 6 is fixed on the mounting support 2 at the top of the bracket. The generator seat 6 is a disc-shaped structure, and its disc surface is parallel to the disc surface of the gear plate.

[0042] The above-mentioned reducer is preferably a worm gear reducer. The use of a worm gear reducer can increase the speed, so that the generator can work at a more suitable speed and improve the power generation efficiency. Of course, the above-mentioned reducer can also be a gear reducer, a planetary reducer, a spiral bevel gear reducer, an eccentric reducer, etc., which can be customized according to the use requirements in specific installation applications.

[0043] The above generator is preferably a magnetic levitation generator. The contactless structure of the magnetic levitation generator reduces mechanical wear, has low maintenance characteristics, improves the reliability and life of the generator, helps maintain the stability of the output power, helps reduce long-term operating costs, and improves the economy of the entire system. Of course, the above generator can also be a permanent magnet generator or an induction generator, etc., which can be customized according to the use requirements in specific installation applications.

[0044] Of course, in other embodiments, the wind power generation device provided in the present application may also retain only one of the first gear plate 7 and the second gear plate 10, and ultimately output electrical energy through one generator.

[0045] Compared with the solution of only providing one gear plate and one set of worm gear reducers and magnetic levitation generators, the solution of providing two gear plates and two sets of worm gear reducers and magnetic levitation generators in the present application has the following advantages:

[0046] 1. Realize multi-stage reduction and power generation: The two worm gear reducers can be designed to handle different speed ranges respectively to improve power generation efficiency. For example, the first worm gear reducer 8 is suitable for high speeds, and the second worm gear reducer 11 is suitable for low speeds, ensuring efficient power generation at various wind speeds.

[0047] 2. Enhance system stability: The separate design of two gear plates and two worm gear reducers helps to balance the load, reduce excessive wear of a single component, and improve the overall stability and durability of the system.

[0048] 3. Optimize energy conversion: The two generators can optimize energy conversion under different wind speeds respectively and maximize the efficiency of converting wind energy into electrical energy. The first magnetic levitation generator 9 and the second magnetic levitation generator 12 can dynamically adjust the working state according to the wind speed and optimize the power output.

[0049] 4. Reduce generator load: Distributing the load to two magnetic levitation generators can reduce the workload of each generator, thereby reducing the heat generation and maintenance requirements of the equipment.

[0050] In order to optimize the wind energy capture efficiency at different wind speeds, the present application also adds movable blades 15 to the blades of the wind rotor. Figure 1 In the present application, the fixed wind blade is fixedly connected to the rotating shaft through a blade bracket, the length direction of the fixed wind blade is parallel to the length direction of the rotating shaft, and movable blades are respectively arranged on both sides of the fixed wind blade along its width direction, and the movable blades can rotate relative to the fixed wind blade under the drive of the angle adjustment mechanism, so as to realize the angle adjustment between the movable blade and the fixed blade. In order to realize the automatic control of the angle adjustment mechanism, the present application also arranges a wind speed sensor for monitoring the wind speed on the wind wheel, and the wind speed sensor is connected to the control system signal. The control system outputs a control signal to the angle adjustment mechanism according to the wind speed signal obtained from the wind speed sensor, and the angle adjustment mechanism drives the movable blade to rotate according to the control signal, so as to optimize the capture efficiency of the device for wind energy at different wind speeds. The present application can monitor the wind speed change in real time through the wind speed sensor, provide accurate data support for the control system, and enable the angle adjustment mechanism 16 to make timely adjustments. In addition, the control system in the present application automatically adjusts the angle of the movable blade 15 according to the signal of the wind speed sensor, reduces the uncertainty of human operation, and improves the automation level of the wind power generation device.

[0051] In a preferred embodiment of the present application, the fixed wind blades and the leaf brackets correspond one to one, a plurality of leaf brackets are radially distributed with the rotating shaft as the center, and a plurality of leaf brackets are arranged at equal intervals in the same plane; two movable blades are symmetrically arranged on both sides of the fixed wind blade, the two movable blades have the same shape and size, and the fixed wind blades and the movable blades are both long strips with curved cross-sections.

[0052] In a preferred embodiment of the present application, the curvature of the fixed wind blade is greater than the curvature of the movable blade. Of course, in other embodiments, the curvature of the fixed wind blade can also be less than or equal to the curvature of the movable blade, which can be set according to the natural wind conditions of the installation environment.

[0053] In a preferred embodiment of the present application, the fixed wind blades and movable blades can be made of parachute materials, such as nylon, polyester fiber, etc. When making fixed wind blades, metal tubes or the like can be used as the installation frame of the fixed wind blades, which are connected to the leaf bracket by welding, bolting or special metal pipe joints, and then nylon cloth is fixed on the metal tube. The nylon cloth can be fixed to the metal tube by sewing, bonding or using a special fixing fixture. If sewing is used, UV-resistant and weather-resistant sutures can be used to ensure reliability under long-term exposure to outdoor environments. If bonding is used, a strong adhesive suitable for nylon materials should be selected. If a special fixing fixture is used, a U-shaped clamp or special fastener can be used to fix the nylon cloth to the metal tube by bolting.

[0054] Similarly, metal tubes and nylon fabrics can also be used to make movable blades. The movable blades can be connected to the fixed wind blades through a connecting shaft, and this connecting shaft can be hollow so that cables and hydraulic pipelines can pass through to achieve blade adjustment. Alternatively, a variable pitch system currently equipped in modern wind turbines can be used. This system can actively adjust the windward angle of the blades to adapt to different wind speed conditions. This system usually includes a servo motor and a transmission mechanism connected to the root of the blade. That is, the present application can also refer to the variable pitch system to connect the movable blades to the fixed wind blades.

[0055] It is worth mentioning that the fixed wind blades and movable blades in this application are made of parachute material, which has the following advantages: 1. Parachute material usually has the characteristics of high strength and light weight, which helps to reduce the overall weight of the wind wheel, thereby reducing the burden on the wind turbine bearings and drive system; 2. Wind blades made of parachute material can show good flexibility under the action of wind, which helps to reduce the impact of wind force and increase the durability and stability of the wind wheel; 3. Wind blades made of parachute material are light in weight, so they are more convenient to assemble and maintain, which can reduce maintenance costs and labor intensity; 4. Parachute material usually has high tensile strength and good weather resistance, which can extend the service life of the wind wheel; 5. Compared with traditional glass fiber or carbon fiber composite materials, parachute material may have a lower cost, which helps to reduce the overall cost of wind power generation equipment.

[0056] In a preferred embodiment of the present application, the outer convex surface of the fixed wind blade is fixedly connected to the blade bracket, and the blade bracket can be connected to any position of the outer convex surface of the fixed wind blade.

[0057] In this embodiment, the angle adjustment mechanism 16 for adjusting the inclination of the movable blade 15 includes an electric push rod, which is connected to one end of the movable blade 15, and the other end of the movable blade 15 is rotatably connected to the surface of the fixed wind blade 14, so the electric push rod can adjust the angle between the movable blade 15 and the fixed wind blade 14. In this application, the use of the electric push rod can make the inclination adjustment of the movable blade 15 more accurate and responsive, which helps the wind power generation device to quickly adapt to changes in wind speed and reduce energy loss; in addition, the precise control of the electric push rod can achieve angle fine adjustment, so that the wind power generation device can maintain a high power generation efficiency at different wind speeds; furthermore, the design of the movable blade 15 and the electric push rod makes the maintenance of the wind power generation device more convenient, and parts can be adjusted and replaced regularly to reduce the failure rate.

[0058] The arrangement of the fixed wind blades in this application is different from that in traditional wind power generation equipment. The length direction of the wind blades in traditional wind power generation equipment is perpendicular to the rotation axis. There is a problem of short-term imbalance due to changes in wind direction during application. The power generation voltage is high or low and unstable due to changes in wind speed and the twisting of the wind blades during wind direction changes. When the wind is too strong, it will stall and lose the power generation effect. However, the length direction of the fixed wind blades in this application is parallel to the rotation axis. This arrangement makes this application unaffected by wind direction movement and can accept wind from any direction. The speed is adjusted by the gear plate and worm gear reducer to maintain the relative uniform speed of the generator set and ensure voltage balance.

[0059] In a specific embodiment, Figure 1 The wind wheel includes eight fixed wind blades, which are arranged in a clockwise direction. The eight fixed wind blades are respectively recorded as: a first fixed wind blade, a second fixed wind blade, a third fixed wind blade, a fourth fixed wind blade, a fifth fixed wind blade, a sixth fixed wind blade, a seventh fixed wind blade and an eighth fixed wind blade, wherein:

[0060] The first fixed wind blade and the fifth fixed wind blade are centrally symmetrical with respect to the center of the rotating shaft. Two electric push rods are arranged on the outer convex surface of the first fixed wind blade, and two electric push rods are arranged on the outer convex surface of the fifth fixed wind blade.

[0061] The output ends of the two electric push rods installed on the first fixed wind blade are respectively connected to the two movable blades on the second fixed wind blade, the two movable blades on the second fixed wind blade are respectively connected to the two movable blades on the third fixed wind blade through the connecting rod 18, the two movable blades on the third fixed wind blade are respectively connected to the two movable blades on the fourth fixed wind blade through the connecting rod, and the two movable blades on the fourth fixed wind blade are respectively connected to the two movable blades on the fifth fixed wind blade through the connecting rod; the two electric push rods installed on the first fixed wind blade can drive the movable blades on the first to fifth fixed wind blades to rotate clockwise in sequence under the driving action of the connecting rod.

[0062] The output ends of the two electric push rods installed on the fifth fixed wind blade are respectively connected to the two movable blades on the sixth fixed wind blade, the two movable blades on the sixth fixed wind blade are respectively connected to the two movable blades on the seventh fixed wind blade through connecting rods, the two movable blades on the seventh fixed wind blade are respectively connected to the two movable blades on the eighth fixed wind blade through connecting rods, and the two movable blades on the eighth fixed wind blade are respectively connected to the two movable blades on the first fixed wind blade through connecting rods; the two electric push rods installed on the fifth fixed wind blade can drive the fifth fixed wind blade to rotate clockwise in sequence to the movable blades on the first fixed wind blade under the driving action of the connecting rod.

[0063] The two electric push rods installed on the first fixed wind blade and the two electric push rods installed on the fifth fixed wind blade are both connected to the control system signal.

[0064] This structural design can achieve driving through the connecting rod, reduce the number of electric push rods designed, reduce device costs, and reduce failure rates.

[0065] In a preferred embodiment of the present application, one or more exhaust vent components may be provided on the working surface or non-working surface of each fixed air blade 14, and the exhaust vent components include exhaust vents 17 provided on the working surface or non-working surface of the fixed air blade 14, a cover plate adapted to the exhaust vent 17, and a driver 18 for driving the cover plate to open or close the exhaust vent. In order to realize the automatic opening and closing of the exhaust vent 17, a wind direction sensor is provided on the fixed air blade 14 in the present application, and the control system is connected to the wind direction sensor signal. The control system outputs an opening and closing control signal to the driver 18 according to the wind direction signal obtained from the wind direction sensor to realize the opening and closing control of the exhaust vent; the control system outputs an opening control signal to the driver 18 according to the wind speed signal obtained from the wind speed sensor to realize the control of the conduction area of ​​the exhaust vent.

[0066] The present application provides the following advantages by arranging an exhaust port assembly on the working surface or non-working surface of the fixed air blade:

[0067] 1. Dynamically adjust wind resistance at different wind speeds: When the wind acts on the working surface of the fixed wind blade, the exhaust port is closed and the fixed wind blade can receive the maximum wind force; when the wind acts on the non-working surface, the exhaust port is opened to reduce headwind resistance and the load on the fixed wind blade, thereby reducing energy loss and improving power generation efficiency.

[0068] 2. Improve the utilization rate of wind energy: By opening and closing the exhaust vents, wind energy can be used more effectively. When the wind speed is high, part of the wind can be discharged through the exhaust vents, reducing the damage to the fixed wind blades caused by excessive force; when the wind speed is low, the exhaust vents are closed to ensure that the fixed wind blades can capture more wind energy and improve the utilization rate of wind energy.

[0069] 3. Enhance the adaptability of wind turbines: The setting of the exhaust vent assembly enables the wind turbine to better adapt to different wind speed and wind direction conditions. This adaptability is crucial to improving the performance of wind turbines under various meteorological conditions.

[0070] 4. Improve power generation efficiency: The design of the exhaust vent helps to improve the overall power generation efficiency of the wind power generation device. When the wind speed changes, by adjusting the exhaust vent, the output power of the wind power generation device can be kept relatively stable, reducing the loss of power generation efficiency caused by wind speed fluctuations.

[0071] 5. Overall structural optimization: The design of the exhaust vent assembly can work together with other components of the wind turbine (such as fixed wind blades, rotating shafts, gear plates, worm gear reducers and magnetic levitation generators, etc.) to form an efficient energy conversion system. This structural optimization helps to improve the overall performance and reliability of the wind turbine.

[0072] In a preferred embodiment of the present application, the driver for driving the cover plate in the exhaust vent assembly is an electric push rod or a ball screw driver, and of course, it can also be other low-cost and high-reliability linear drivers.

[0073] In a specific embodiment, one end of the cover plate is hinged to the working surface or non-working surface of the fixed wind blade, and the other end of the cover plate is connected to the output end of the driver. The driver can drive the cover plate to rotate relative to the working surface or non-working surface of the fixed wind blade to open or close the exhaust port.

[0074] In another specific embodiment, the cover plate is slidably matched with the surface of the fixed wind blade, and the driver can drive the cover plate to translate along the working surface or non-working surface of the fixed wind blade to open or close the exhaust port.

[0075] In summary, the wind power generation device provided by the present application has at least the following advantages compared with traditional wind power generation equipment:

[0076] 1. The present application realizes the conversion of mechanical energy into electrical energy by arranging a gear plate on the rotating shaft, and sequentially connecting the gear plate with the worm gear reducer and the magnetic levitation generator. The use of the worm gear reducer can increase the rotation speed, so that the magnetic levitation generator can operate at a more suitable rotation speed, thereby improving the power generation efficiency.

[0077] 2. In the present application, the fixed wind blades on the wind wheel are fixedly connected to the rotating shaft through leaf brackets, the length direction of the fixed wind blades is parallel to the length direction of the rotating shaft, and movable blades are respectively provided on both sides of the fixed wind blades along the width direction. The movable blades can rotate relative to the fixed wind blades under the drive of the angle adjustment mechanism, thereby realizing the angle adjustment between the movable blades and the fixed blades. The control system monitors the wind speed changes in real time through the wind speed sensor, and then controls the angle adjustment mechanism to timely adjust the angle of the movable blades, so that the device can dynamically adjust the inclination angle of the movable blades according to the change of wind speed, so that the wind power generation device can work in the best state under different wind speeds, optimize the wind energy capture efficiency, and improve the wind energy utilization rate and conversion rate.

[0078] 3. The arrangement of the fixed wind blades in the present application is different from that in the traditional wind power generation equipment. The length direction of the wind blades in the traditional wind power generation equipment is perpendicular to the rotation axis. There is a problem of short-term imbalance due to the change of wind direction during application. In addition, due to the change of wind speed and the twisting of the wind blades during the change of wind direction, the power generation voltage is either high or low and not stable enough. When the wind is too strong, it will stall and lose the power generation effect. However, in the present application, the length direction of the fixed wind blades is parallel to the rotation axis. This arrangement makes the present application not affected by the movement of wind direction and can accept wind from any direction. The speed is adjusted by the gear plate and worm gear reducer to maintain the relative uniform speed of the generator set and ensure voltage balance.

[0079] 4. The present application arranges one or more exhaust vent components on the working surface or non-working surface of the fixed wind blade of the wind power generation device. The setting of the exhaust vent components can dynamically adjust the wind resistance under different wind speeds. When the wind acts on the working surface of the fixed wind blade, the exhaust vent is closed, and the fixed wind blade can receive the maximum wind force; when the wind acts on the non-working surface, the exhaust vent is opened to reduce the headwind resistance and the load on the fixed wind blade, thereby reducing energy loss, improving power generation efficiency, and making full use of wind resources to generate the maximum driving force.

[0080] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0081] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A wind power generation device, comprising a vertically arranged bracket, a mounting support is arranged on the top of the bracket, a bottom of the bracket is connected to a mounting base, a bearing mounting seat is arranged on the mounting support, a rotating shaft is horizontally arranged in the bearing mounting seat, a wind wheel is fixed on the rotating shaft, and the wind wheel includes a plurality of fixed wind blades, characterized in that: The wind wheel is provided with a wind speed sensor for monitoring wind speed, the fixed wind blade is fixedly connected to the rotating shaft through a blade bracket, the length direction of the fixed wind blade is parallel to the length direction of the rotating shaft, and the fixed wind blade is respectively provided with movable blades on both sides along the width direction thereof, and the movable blade can rotate relative to the fixed wind blade under the drive of the angle adjustment mechanism, so as to achieve the angle adjustment between the movable blade and the fixed blade, and the angle adjustment mechanism includes an electric push rod, the electric push rod is connected to one end of the movable blade, and the other end of the movable blade is rotationally connected to the fixed wind blade; A gear plate is fixed on the rotating shaft, the gear plate is drivingly connected to the input end of the worm gear reducer, and the output end of the worm gear reducer is drivingly connected to the rotor of the magnetic levitation generator; a generator seat is arranged on the mounting support, and a mounting frame for fixing the worm gear reducer and the magnetic levitation generator is arranged on the generator seat; It also includes a control system, which is connected to the wind speed sensor signal and outputs a control signal to the electric push rod according to the wind speed signal obtained from the wind speed sensor. The electric push rod drives the movable blade to rotate according to the control signal.

2. The wind power generation device according to claim 1, characterized in that: One or more air outlet assemblies are arranged on the working surface or non-working surface of the fixed air blade, and the air outlet assembly includes an air outlet arranged on the fixed air blade, a cover plate adapted to the air outlet, and a driver for driving the cover plate to open or close the air outlet; The output end of the driver is connected to the cover plate, and the cover plate can move along the surface of the fixed wind blade under the drive of the driver to open or close the exhaust port; Alternatively, the cover plate can be driven by the driver to rotate relative to the surface of the fixed wind blade to open or close the air outlet.

3. The wind power generation device according to claim 2, characterized in that: The driver is an electric push rod or a ball screw driver, one end of the cover plate is hinged to the working surface or non-working surface of the fixed wind blade, and the other end of the cover plate is connected to the output end of the driver. The driver can drive the cover plate to rotate relative to the working surface or non-working surface of the fixed wind blade to open or close the exhaust port.

4. The wind power generation device according to claim 2, characterized in that: The driver is an electric push rod or a ball screw driver, and the cover plate is slidingly matched with the surface of the fixed wind blade. The driver can drive the cover plate to translate along the working surface or non-working surface of the fixed wind blade to open or close the exhaust port.

5. The wind power generation device according to claim 2, characterized in that: A wind direction sensor is provided on the fixed wind blade, and the control system is connected to the wind direction sensor signal. The control system outputs an opening and closing control signal to the driver according to the wind direction signal obtained from the wind direction sensor, so as to realize the opening and closing control of the exhaust port; the control system outputs an opening control signal to the driver according to the wind speed signal obtained from the wind speed sensor, so as to realize the control of the conduction area of ​​the exhaust port.

6. The wind power generation device according to claim 1, characterized in that: The fixed wind blades correspond to the leaf brackets one by one, a plurality of the leaf brackets are radially distributed with the rotation axis as the center, a plurality of the leaf brackets are located in the same plane, and the angles between any two adjacent leaf brackets are the same; The two movable blades are symmetrically arranged on both sides of the fixed wind blade, the two movable blades have the same shape and size, and the fixed wind blade and the movable blade are both long strips with curved cross sections; The curvature of the fixed wind blade is greater than the curvature of the movable blade; The outer convex surface of the fixed wind blade is fixedly connected to the blade bracket.

7. The wind power generation device according to claim 6, characterized in that: The wind wheel comprises eight fixed wind blades, which are arranged in sequence in a clockwise direction, and the eight fixed wind blades are respectively recorded as: a first fixed wind blade, a second fixed wind blade, a third fixed wind blade, a fourth fixed wind blade, a fifth fixed wind blade, a sixth fixed wind blade, a seventh fixed wind blade and an eighth fixed wind blade; The first fixed wind blade and the fifth fixed wind blade are centrally symmetrical about the center of the rotating shaft, two electric push rods are arranged on the outer convex surface of the first fixed wind blade, and two electric push rods are arranged on the outer convex surface of the fifth fixed wind blade; The output ends of the two electric push rods installed on the first fixed wind blade are respectively connected to the two movable blades on the second fixed wind blade, the two movable blades on the second fixed wind blade are respectively connected to the two movable blades on the third fixed wind blade via connecting rods, the two movable blades on the third fixed wind blade are respectively connected to the two movable blades on the fourth fixed wind blade via connecting rods, and the two movable blades on the fourth fixed wind blade are respectively connected to the two movable blades on the fifth fixed wind blade via connecting rods; the two electric push rods installed on the first fixed wind blade can sequentially drive the movable blades on the first fixed wind blade to the fifth fixed wind blade to rotate clockwise under the driving action of the connecting rod; The output ends of the two electric push rods installed on the fifth fixed wind blade are respectively connected to the two movable blades on the sixth fixed wind blade, the two movable blades on the sixth fixed wind blade are respectively connected to the two movable blades on the seventh fixed wind blade via connecting rods, the two movable blades on the seventh fixed wind blade are respectively connected to the two movable blades on the eighth fixed wind blade via connecting rods, and the two movable blades on the eighth fixed wind blade are respectively connected to the two movable blades on the first fixed wind blade via connecting rods; the two electric push rods installed on the fifth fixed wind blade can sequentially drive the movable blades on the fifth fixed wind blade to rotate clockwise under the driving action of the connecting rod; The two electric push rods installed on the first fixed wind blade and the two electric push rods installed on the fifth fixed wind blade are both connected to the control system signal.

8. The wind power generation device according to claim 1, characterized in that: Two gear plates are fixed on the rotating shaft, namely a first gear plate and a second gear plate. The two gear plates are arranged in parallel and spaced apart along the length direction of the rotating shaft. The radius of the first gear plate is greater than the radius of the second gear plate. The second gear plate is close to the generator seat. The generator seat is a disc-shaped structural member. The disc surface of the generator seat is parallel to the disc surface of the second gear plate. The first gear plate is transmission-connected to the input end of the first worm gear reducer, and the output end of the first worm gear reducer is transmission-connected to the rotor of the first magnetic levitation generator; the second gear plate is transmission-connected to the input end of the second worm gear reducer, and the output end of the second worm gear reducer is transmission-connected to the rotor of the second magnetic levitation generator; The first worm gear reducer, the first magnetic levitation generator, the second worm gear reducer and the second magnetic levitation generator are all fixedly mounted on the mounting frame of the generator base.

9. The wind power generation device according to claim 1 or 8, characterized in that: A mounting hole is provided in the middle of the generator seat, and the generator seat is fixedly connected to the outer wall of the bearing mounting seat through the mounting hole, and the rotating shaft passes through the mounting hole and is adaptively connected to the bearing mounting seat.

10. The wind power generation device according to claim 1, characterized in that: Two groups of bearings are arranged relatively spaced apart in the bearing mounting seat, and the two groups of bearings are rotatably connected with the outer peripheral surface of the rotating shaft; a thrust bearing is also arranged in the bearing mounting seat and is mounted in a rotatable manner with the end of the rotating shaft.

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