Efficient high-speed wind power generation system

Abstract

The invention relates to the technical field of wind power generation, in particular to an efficient high-speed wind power generation system which adopts the following steps: S10, establishing a wind gathering venturi tube which is a variable venturi tube, and forming an annular throat part; s20, a wind direction tail vane and a steering damper are installed on the wind gathering venturi tube, and system wind direction tracking is stabilized; s30, a wind energy conversion mechanism is established, specifically, turbines are composed of customized blades, and the turbines and right-angle transmission mechanisms installed on hubs of the two adjacent turbines are arranged on the annular throat portion of the variable Venturi tube to form the efficient wind energy conversion mechanism in a combined mode; s40, mechanical energy of a turbine is efficiently transmitted to an energy storage flywheel through an overrun clutch in the right-angle transmission mechanism; s50, a permanent magnet is installed on the energy storage flywheel, and a rotating magnetic field is formed; the wind power generation device is matched with traditional wind power generation equipment, so that the old wind power generation equipment can be technically innovated and updated; and large-scale seamless joint grid-connected power generation can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a high-efficiency and high-speed wind power generation system. Background Art

[0002] Wind is one of the pollution-free energy sources. Moreover, it is inexhaustible. For coastal islands, grassland pastoral areas, mountainous areas and plateau areas that are short of water, fuel and have inconvenient transportation, it is very suitable and promising to use wind power according to local conditions. Wind power generation refers to the conversion of wind kinetic energy into electrical energy. Wind energy is a clean and pollution-free renewable energy source that has been used by people for a long time, mainly through windmills to pump water and grind flour. People are interested in how to use wind to generate electricity. Using wind power to generate electricity is very environmentally friendly and has huge wind energy reserves.

[0003] Application number: 2024105956674, patent name: A wind power generation system that can be directly connected to the grid. It focuses on solving the problem that the generator, gearbox, and blades of the wind power generation system are installed dozens of meters above the ground, and the center of gravity is unstable. The wind power generation system also has to withstand the lateral thrust during strong winds, so the overall safety factor of the system is not high, and wind power generation system collapse accidents occur from time to time.

[0004] However, the investment in wind power generation is huge, and the applicant's previous patent (application number 2024105956674) is aimed at building a new wind power generation system. In view of the many old power generation equipment across the country, it is impossible to build the above-mentioned wind power generation system on the basis of many old power generation equipment, so in the promotion process, it will also lead to waste of resources. Therefore, how to further integrate the wind power generation system that can be directly connected to the grid previously applied by the applicant with the existing power generation equipment resources is the problem to be solved by this application, so the patent previously applied by the applicant (application number: 2024105956674) needs to be further innovated. Summary of the invention

[0005] The purpose of the present invention is to address the defects and shortcomings of the prior art and provide a high-speed, gearbox-free, and highly efficient wind power generation system that can be directly connected to the grid and has a wind-gathering type and an energy storage device, which can smoothly release the stored energy.

[0006] The high-efficiency and high-speed wind power generation system described in the present invention adopts the following steps: S10: Establish a wind-gathering Venturi tube: It is a modified Venturi tube and forms an annular throat; S20: Install wind direction tail rudder and steering damper on the wind-gathering venturi tube to stabilize the wind direction tracking of the system; S30: Establishing a wind energy conversion mechanism: The turbine is composed of customized blades, and the right-angle transmission mechanism installed on the hubs of two adjacent turbines is placed on the annular throat of the modified venturi tube to form a high-efficiency wind energy conversion mechanism; S40: The overrunning clutch in the right-angle transmission mechanism efficiently transmits the mechanical energy of the turbine to the energy storage flywheel; S50: A permanent magnet is installed on the energy storage flywheel to form a rotating magnetic field; S60: Induction current transmission of electromagnetic coils in a rotating magnetic field arrive High frequency chopper inverter and energy storage battery; S70: High-frequency chopper inverter outputs sine wave AC power directly connected to the grid; S80: The electromagnetic coil is switched in series and parallel according to the wind force to adapt to the working voltage range of the high-frequency chopper inverter; the high-frequency chopper inverter further stabilizes the output voltage of the system through chopping pulse width modulation; S90: Several air valves are evenly arranged around the outer side of the wind hood shell, and an anemometer and a PLC microcontroller are installed at the top of the inner wall of the wind hood shell. The power supply of the PLC microcontroller is supplied by the electric energy generated by the power generation of this design. The air intake volume is tested in real time according to the anemometer. When there is extremely strong wind outside, the extremely strong wind is set to level 10. The PLC microcontroller controls the opening of the air valve, which is beneficial to ensure the safety of the equipment and is also convenient for later maintenance.

[0007] Furthermore, the wind energy conversion mechanism includes a rotating shaft installed in the annular throat area, bearings are installed at both ends of the rotating shaft, two bearings are installed on the two side surfaces of the annular throat area, and at least two layers of turbine blades are installed on the rotating shaft; a right-angle transmission mechanism is installed on the hub of the two layers of turbine blades, and an overrunning clutch is installed in the right-angle transmission mechanism, which drives the vertical rotating shaft to rotate horizontally through the longitudinally rotating turbine blades; the vertical rotating shaft is connected to the flywheel energy storage mechanism.

[0008] Furthermore, the flywheel energy storage mechanism includes an energy storage flywheel installed below the overrunning clutch, and a rotating magnetic field coil is installed between the energy storage flywheels.

[0009] After adopting the above structure, the beneficial effects of the present invention are as follows: the high-efficiency and high-speed wind power generation system described in the present invention utilizes the natural slope and plane of the hillside and the ground as a wind gathering surface to form a variety of wind gathering mechanisms, similar to a large Venturi tube. At the throat of the Venturi tube, multiple layers of turbines and airflow guide impellers are arranged, thereby saving the speed change mechanism in the original wind power system; and traditional wind power generation equipment is coordinated to achieve technical innovation and updating of old wind power generation equipment; it has the advantages of high wind energy utilization rate, low construction cost, precise control, and can be seamlessly connected to the grid for large-scale power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is an enlarged view of the A part of the present invention; Figure 3 It is a schematic diagram of a specific implementation structure of the right-angle transmission mechanism of the present invention; Figure 4 is a schematic diagram of the front structure of the T-shaped wind rudder of the present invention; Figure 5 is a schematic side view of the structure of the T-shaped wind rudder of the present invention; Description of reference numerals: Wind guide housing-1; inverter-2; wind energy conversion mechanism-3; flywheel energy storage mechanism-4; power grid-5; wind valve-6; traditional wind power generation equipment-7. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0013] like Figure 1-Figure 5 As shown, a high-efficiency and high-speed wind power generation system described in this specific implementation mode, S10: establishing a wind-gathering venturi tube: a modified venturi tube, and forming an annular throat; S20: Install wind direction tail rudder and steering damper on the wind-gathering venturi tube to stabilize the wind direction tracking of the system; S30: Establishing a wind energy conversion mechanism: The turbine is composed of customized blades, and the right-angle transmission mechanism installed on the hubs of two adjacent turbines is placed on the annular throat of the modified venturi tube to form a high-efficiency wind energy conversion mechanism; S40: The overrunning clutch in the right-angle transmission mechanism efficiently transmits the mechanical energy of the turbine to the energy storage flywheel; S50: A permanent magnet is installed on the energy storage flywheel to form a rotating magnetic field; S60: Induction current transmission of electromagnetic coils in a rotating magnetic field arrive High frequency chopper inverter and energy storage battery; S70: High-frequency chopper inverter outputs sine wave AC power directly connected to the grid; S80: The electromagnetic coil is switched in series and parallel according to the wind force to adapt to the working voltage range of the high-frequency chopper inverter; the high-frequency chopper inverter further stabilizes the output voltage of the system through chopping pulse width modulation; S90: Several air valves are evenly arranged around the outer side of the wind hood shell, and an anemometer and a PLC microcontroller are installed at the top of the inner wall of the wind hood shell. The power supply of the PLC microcontroller is supplied by the electric energy generated by the power generation of this design. The air intake volume is tested in real time according to the anemometer. When there is extremely strong wind outside, the extremely strong wind is set to level 10. The PLC microcontroller controls the opening of the air valve, which is beneficial to ensure the safety of the equipment and is also convenient for later maintenance.

[0014] Furthermore, the wind energy conversion mechanism 3 includes a rotating shaft 31 installed in the annular throat area 13, bearings are installed at both ends of the rotating shaft 31, two bearings are installed on the two side surfaces of the annular throat area 13, and at least two layers of turbine blades 32 are installed on the rotating shaft 31; a right-angle transmission mechanism 33 is installed between the hubs of the two layers of turbine blades 32, and an overrunning clutch 35 is installed in the right-angle transmission mechanism 33, which converts the vertical rotating shaft 34 into horizontal rotation through the longitudinally rotating turbine blades 32; the vertical rotating shaft 34 is connected to the flywheel energy storage mechanism 4.

[0015] Furthermore, the flywheel energy storage mechanism 4 includes a flywheel 42 installed below the overrunning clutch 4 , and a rotating magnetic field coil 41 is installed between the flywheels 42 .

[0016] In the present design, one side of the air guide housing 1 is a conical cylindrical wind collecting cover 11, and the other side of the air guide housing 1 is a conical cylindrical diffusion cover 12. The wind collecting cover 11 and the diffusion cover 12 form a venturi tube-shaped air guide housing, forming a modified venturi tube; the middle area of ​​the air guide housing is an annular throat 13.

[0017] In this design, a wind energy conversion mechanism 3 is installed in the annular throat 13, and the wind energy conversion mechanism 3 drives the flywheel energy storage mechanism 4 to work through the vertical rotating shaft 34, so as to realize the transfer of mechanical energy in the wind energy conversion mechanism 3 to the energy storage flywheel in the flywheel energy storage mechanism 4, and transmit the energy to the flywheel energy storage mechanism 4 through the induction current of the electromagnetic coil. arrive The high-frequency chopper inverter 2 and the energy storage battery are then connected to the power grid 5 to achieve grid connection.

[0018] In the present design, the wind collecting hood shell 11 comprises a wind collecting hood outer shell 111 and a wind collecting hood inner shell 112 installed at the inner end inside the wind collecting hood outer shell 111; the diffusion hood shell 12 comprises a diffusion hood outer shell 121 and a diffusion hood inner shell 122 installed at the inner end inside the diffusion hood outer shell; the wind collecting hood inner shell 112 and the diffusion hood inner shell 122 form an annular throat 13 in the middle of the air guide outer shell.

[0019] In the present design, the right-angle transmission mechanism 33 can adopt the following specific structure, which is of course only one right-angle transmission structure, and can also be other right-angle transmission mechanisms. An example is as follows: the right-angle transmission mechanism 33 includes a first longitudinal bevel gear 331 installed on the inner side of the turbine blade 32, and two first longitudinal bevel gears 331 are respectively installed on the rotating shaft 31; the two first bevel gears 33 are meshed with the second horizontal bevel gear 332; the second horizontal bevel gear 332 is installed on the second bearing on the bottom surface of the annular throat 13, and the vertical rotating shaft 34 is connected to the second horizontal bevel gear 332.

[0020] In the present design, a number of air valves 6 are evenly arranged around the outer side surface of the wind hood shell 111, and an anemometer and a PLC single-chip microcomputer are installed at the top of the inner wall of the wind hood shell. The power supply of the PLC single-chip microcomputer is supplied by the electric energy generated by the power generation of the present design. The air intake volume is tested in real time according to the anemometer. When there is extremely strong wind outside, the extremely strong wind is set to level 10. The PLC single-chip microcomputer controls the opening of the air valve, which is beneficial to ensure the safety of the equipment and is also convenient for later maintenance.

[0021] The technical solution of the present invention is distinguished from the patent application number: 2024105956674) before the application as follows: In step S30, the guide blades in the original patent application (2024105956674) are removed; the right-angle transmission mechanism on the hub of the two turbines is installed with an overrunning clutch in the right-angle transmission mechanism to form a new technical feature. This simplifies the applicant's previous technical structure and makes it simpler to implement.

[0022] In this design, the flywheel energy storage mechanism 4 is external. It is more convenient to install and connect with traditional wind power equipment, has simple construction, can achieve product upgrade and innovation, and save a lot of costs. The flywheel energy storage mechanism includes a plurality of flywheels 42, and a rotating magnetic field coil 41 is installed between two adjacent flywheels 42. Finally, it is transmitted to the inverter 2 and then to the power grid 5.

[0023] In the present design, the outer shell 111 of the wind condenser hood is shaped like a conical cylinder, and the outer end of the outer shell 111 of the wind condenser hood is a cylinder mouth with a large opening; the inner shell 112 of the wind condenser hood is shaped like a conical cylinder, and the inner end of the inner shell 112 of the wind condenser hood is a cylinder mouth with a large opening.

[0024] In this design, a protective net is installed on the outer port of the air collecting cover shell 111 to prevent birds or other foreign objects from being sucked in.

[0025] In the present design, the outer shell 121 of the diffuser cover is shaped like a conical cylinder, and the outer end of the outer shell 121 of the diffuser cover is a cylinder mouth with a large opening; the inner shell 122 of the diffuser cover is shaped like a conical cylinder, and the inner end of the inner shell 122 of the diffuser cover is a cylinder mouth with a large opening.

[0026] In the present design, a wind direction tail rudder 123 is installed at the tail of the diffusion cover shell 121. The wind direction tail rudder 123 is a T-shaped wind rudder, which controls the wind-collecting power generation system to always be in a windward state.

[0027] In this design, the customized blade adopts a special-shaped turbine blade with patent number 202010841952.1. The special-shaped turbine blade is a blade patent previously applied for by the inventor and is applied to this product.

[0028] The working principle of the present invention is specifically described as follows: This design cooperates with the traditional power generation mechanism and realizes connection with the traditional wind power generation equipment 7 through the vertical rotating shaft 34.

[0029] When in use, when the wind volume enters the air through the wind collecting cover and reaches the throat area, the incoming wind forms a high-speed airflow, which drives the high-speed operation of the turbine, so that a high-speed airflow is formed at the throat of the venturi tube. The middle part of the rotating shaft 31 in this design is equipped with a turbine blade 32; Figure 3 The figure shows two layers of turbines, but in fact they are multi-layered and the blade angles vary incrementally; therefore, multiple layers of turbine blades 32 can be installed on the rotating shaft 31 of the present design; since a right-angle transmission mechanism 33 is installed to guide the flow, the airflow can be utilized to the maximum extent, so the direction of the airflow passing through the turbine can be controlled, thereby utilizing the turbine to convert wind energy into mechanical energy.

[0030] Then, the longitudinally rotating turbine blades 32 are converted into driving the horizontal rotation of the close shaft through the right-angle transmission mechanism 33, thereby driving the flywheel energy storage mechanism 4 to work. Of course, the right-angle transmission mechanism 33 in this design is also applicable to other possible conversions of longitudinal rotation into horizontal rotation, so that the longitudinally rotating turbine blades 32 can drive the horizontally rotating vertical shaft 34 to move.

[0031] The flywheel energy storage mechanism 4 includes a plurality of flywheels 42 mounted below the overrunning clutch 35 on the vertical rotating shaft 34, and a rotating magnetic field coil 41 is mounted between adjacent flywheels 42. The rotating magnetic field coil 41 generates an induced current; the induced current is output to the high-frequency chopper inverter 2, and the inverted sinusoidal AC is connected in parallel with the power grid 5 to form a complete power generation system. It saves the speed change mechanism in the original wind power system, while improving the utilization efficiency of wind energy and reducing a large amount of wind abandonment.

[0032] like Figure 1 As shown, in the present design, a number of air valves 6 are evenly arranged around the outer side of the wind hood shell 111; an anemometer and a PLC single-chip microcomputer are installed at the top of the inner wall of the wind hood shell 111, and the power supply of the PLC single-chip microcomputer is supplied by the electric energy generated by the power generation of the present design. The PLC single-chip microcomputer is connected to the anemometer and the air valve through a cable, and the wiring is close to the wind hood shell 111, and the wire is wrapped with a waterproof and fireproof layer. When in use, the air volume is measured according to the anemometer, so that the PLC controller can be controlled to open the air valve according to different air volumes. The present design can set a maximum air intake setting. When there is an extremely strong wind outside, the air valve is opened, which is beneficial to ensure the equipment. The setting for extremely strong winds is set according to the level of the typhoon.

[0033] The beneficial effects of the present invention are as follows: (1) The present invention is based on the patent application (application number: 2024105956674) previously filed by the original applicant and perfectly upgrades the existing power generation equipment. The traditional wind power generation equipment with a large foundation is integrated with the present invention, thereby greatly reducing waste.

[0034] (1) In the present invention, in order to solve the problem of low wind energy utilization rate in the original wind power system, the design technology adopts a variety of wind gathering mechanisms according to various specific conditions, using the natural slope and ground plane of the hillside and the ground as a wind gathering surface, and other three surfaces can be made of other materials. The above-mentioned wind gathering structure is similar to a large deformed Venturi tube. At the throat of this Venturi tube, there are multiple layers of turbines, and an airflow guide impeller is arranged in the middle of the multiple layers of turbines. Due to the use of the wind gathering mechanism, a high-speed airflow is formed at the throat of the Venturi tube. This high-speed airflow drives the high-speed operation of the turbine, thereby saving the speed change mechanism in the original wind power system, while improving the utilization efficiency of wind energy and reducing a large amount of wind abandonment.

[0035] (2) In the present invention, in order to solve the problem of high construction cost in the original wind power system, the present design installs the new wind power system on the top of the hill, using the hill as the basic platform of the new wind power system, or directly installs the new wind power system on the ground by means of wind gathering and guiding.

[0036] (3) In the present invention, the new wind power system of this design is equipped with a mechanical flywheel (energy storage flywheel) as the energy storage body of the new wind power system. The turbine and the flywheel are coupled through a one-way overrunning clutch. When the wind is strong, the turbine accelerates the flywheel through the one-way overrunning clutch to do work; when the wind is weak, the turbine is equivalent to being separated from the flywheel, so that there is no need for the flywheel to return energy to the turbine.

[0037] In the present invention, in order to avoid the impact of surge current of the generator set on the power grid when the wind is strong, the new wind power system of the present invention adopts the following measures: (A) This design combines the output windings of the generator sets of the new wind power system in series or in parallel to achieve relative stability of the generator output voltage.

[0038] (B) This design adjusts the magnetic flux of the generator set of the new wind power system to further achieve output voltage stability. The above-mentioned use of magnetic flux to achieve output voltage stability can change the magnetic flux in real time through software. This technology is an existing technology, so this design will not be elaborated in detail.

[0039] (C) This design synchronizes and networks the output of the generator set of the new wind power system with a sinusoidal chopper inverter, ultimately outputting balanced and stable high-quality electricity within a relative time period.

[0040] (D) The new wind power system generator set designed in this paper is uniformly regulated based on the big data of the power grid and the size of the local wind.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-efficiency and high-speed wind power generation system, characterized in that: Use the following steps: S10: Establish a wind-gathering Venturi tube: It is a modified Venturi tube and forms an annular throat; S20: Install wind direction tail rudder and steering damper on the wind-gathering venturi tube to stabilize the wind direction tracking of the system; S30: Establishing a wind energy conversion mechanism: The turbine is composed of customized blades, and the right-angle transmission mechanism installed on the hubs of two adjacent turbines is placed on the annular throat of the modified venturi tube to form a high-efficiency wind energy conversion mechanism; S40: The overrunning clutch in the right-angle transmission mechanism efficiently transmits the mechanical energy of the turbine to the energy storage flywheel; S50: A permanent magnet is installed on the energy storage flywheel to form a rotating magnetic field; S60: Induction current transmission of electromagnetic coils in a rotating magnetic field arrive High frequency chopper inverter and energy storage battery; S70: High-frequency chopper inverter outputs sine wave AC power directly connected to the grid; S80: The electromagnetic coil is switched in series and parallel according to the wind force to adapt to the working voltage range of the high-frequency chopper inverter; the high-frequency chopper inverter further stabilizes the output voltage of the system through chopping pulse width modulation; S90: Several air valves are evenly arranged around the outer side of the wind hood shell, and an anemometer and a PLC microcontroller are installed at the top of the inner wall of the wind hood shell. The power supply of the PLC microcontroller is supplied by the electric energy generated by the power generation of this design. The air intake volume is tested in real time according to the anemometer. When there is extremely strong wind outside, the extremely strong wind is set to level 10. The PLC microcontroller controls the opening of the air valve, which is beneficial to ensure the safety of the equipment and is also convenient for later maintenance.

2. A high-efficiency and high-speed wind power generation system according to claim 1, characterized in that: The wind energy conversion mechanism includes a rotating shaft installed in the annular throat area, bearings are installed at both ends of the rotating shaft, two bearings are installed on the two side surfaces of the annular throat area, and at least two layers of turbine blades are installed on the rotating shaft; a right-angle transmission mechanism is installed on the hub of the two layers of turbine blades, and an overrunning clutch is installed in the right-angle transmission mechanism, which drives the vertical rotating shaft to rotate horizontally through the longitudinally rotating turbine blades; the vertical rotating shaft is connected to the flywheel energy storage mechanism.

3. The high-efficiency and high-speed wind power generation system according to claim 1, characterized in that: The flywheel energy storage mechanism comprises an energy storage flywheel installed below the overrunning clutch, and a rotating magnetic field coil is installed between the energy storage flywheels.

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