Duct multi-stage turbocharged windmill power generation device and application

Abstract

The invention relates to the technical field of wind power generation, and particularly discloses a ducted multi-stage turbo-charging type windmill power generation device and application of the ducted multi-stage turbo-charging type windmill power generation device. The turbine at least comprises two stages of turbines; the rotary supporting mechanism is used for supporting the ducted windmill and achieving rotation of the ducted windmill and comprises a base, a rotating piece, a supporting piece, a radial shrinkage assembly, a damping assembly and a first driving assembly. The rotating piece is circumferentially and slidably arranged at the top of the base, and a gap is formed between the bottom of the rotating piece and the top of the base; the top of the supporting piece is connected with the ducted windmill, and the bottom is connected with the rotating piece. The radial contraction assembly is used for driving the damping assembly to insert into or move out of the gap; the first driving assembly is used for driving the rotating part to slide. The ducted windmill can rotate by any angle within 360 degrees in the horizontal direction through sliding of the rotating piece so as to adapt to different wind directions, and meanwhile damping is achieved.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a ducted multi-stage turbocharged wind turbine power generation device and its application. Background Technology

[0002] With the development of inland waterway and ocean shipping, a large number of ships, such as floating vessels in the open sea and mobile ocean vessels, are exposed to open water environments for extended periods when berthed at docks or in a state of unpowered navigation. Through long-term observation, the inventors discovered that under these conditions, there is usually a continuous and stable natural wind flow around the ship's hull, with wind speeds exceeding 30 km / h in most cases, exhibiting high wind energy density.

[0003] However, existing ships do not effectively recover and utilize the aforementioned wind energy in this state, resulting in a waste of energy resources. Existing wind power generation devices are mostly designed for fixed land or large-scale wind power generation scenarios, and have problems such as large size, strong dependence on wind direction, difficulty in adapting to limited space on ships, significant vibration, and variable wind direction, making them difficult to directly apply to ship docking or unpowered navigation conditions.

[0004] For example, the CN120946510B-ducted twin-turbocharged wind turbine improves the wind energy utilization rate by using a blade-type rotating structure and duct to drive the rear turbine to rotate. However, it is not suitable for inland waterway shipping and floating ships and ocean-going vessels with variable wind directions. It can only utilize wind flow in one direction. When the wind flow changes, it cannot be effectively utilized, thus failing to make full use of the variable wind flow in the aquatic environment.

[0005] For example, CN121408140A-A ducted airflow coupling wind energy recovery power generation system and method based on train onboard system, which connects multiple ducted wind turbines in series on a train, and the ducted wind turbines can turn around quickly based on different travel directions, so as to make full use of the wind energy during the train braking process.

[0006] However, existing technologies cannot adjust the direction of the inlet of a ducted twin-turbocharged wind turbine to adapt to varying wind directions, and in aquatic environments, installation stability and vibration reduction issues also need to be considered. Therefore, there is an urgent need for a power generation device that is suitable for ship docking or unpowered navigation conditions, can efficiently recover ambient wind energy, has a compact structure, and operates stably. Summary of the Invention

[0007] The purpose of this invention is to provide a ducted multi-stage turbocharged wind turbine power generation device and its application, which enables the ducted wind turbine to rotate at any angle within 360° in the horizontal direction to adapt to different wind directions, while also achieving vibration reduction.

[0008] This invention is achieved through the following technical solution: A ducted multi-stage turbocharged wind turbine power generation unit includes: Ducted wind turbine; which includes at least two turbine stages; A rotary support mechanism is used to support and rotate a ducted wind turbine. It includes a base, a rotating component, a support component, a radial contraction assembly, a shock-absorbing assembly, and a first drive assembly. The rotating component is circumferentially slidable on the top of the base, with a gap between the bottom of the rotating component and the top of the base. The sliding of the rotating component allows the ducted wind turbine to rotate at any angle within a 360° horizontal direction. The top of the support component is connected to the ducted wind turbine, and the bottom is connected to the rotating component. The radial contraction assembly drives the shock-absorbing assembly to insert into or move out of the gap. The first drive assembly drives the rotating component to slide. The radial shrinkage assembly includes a cam disk and a second drive assembly that drives the cam disk to rotate. The cam disk is provided with multiple guide grooves, which are arc-shaped and have two ends that are not in the same circumferential direction. The shock absorption assembly includes a guide rod slidably disposed in a guide groove. The top of the guide rod is connected to a bottom elastic clip via a connector. A limiting rod is provided on the guide rod and is radially slidably disposed on the base. The limiting rod is used to limit the circumferential displacement of the guide rod so that it can only perform radial displacement. The bottom elastic clip is driven to insert into or move out of the gap by a radial contraction assembly.

[0009] The ducted wind turbine of this invention is equipped with multiple turbine stages, which can improve power generation efficiency compared to a single-stage turbine.

[0010] The rotary support mechanism of the present invention uses a rotating component and a support component to support the ducted wind turbine. The rotating component is not fixed, but is circumferentially slidable on the top of the base. Under the action of the first drive component, the rotating component can rotate 360° around its own axis, thereby enabling the ducted wind turbine to rotate at any angle within 360° in the horizontal direction. The horizontal direction of the present invention specifically refers to the axis of the ducted wind turbine.

[0011] In this invention, to facilitate the rotation of the ducted wind turbine at any angle within 360° in the horizontal direction, a gap is provided between the bottom of the rotating component and the top of the base. This gap reduces the friction between the rotating component and the base during rotation, making the rotation operation easier. However, when there is a gap between the bottom of the rotating component and the top of the base, the stability of the ducted wind turbine is relatively poor when it needs to be fixed, especially when the environment in which the ducted wind turbine is located has a large airflow. Therefore, based on this, this invention provides a shock-absorbing component that enables radial displacement. When the ducted wind turbine needs to be rotated, the shock-absorbing component moves out of the gap, allowing the ducted wind turbine to rotate. After rotating to the designated position, the shock-absorbing component can be inserted into the gap. The bottom elastic clip is inserted into the gap to achieve shock absorption of the rotating component. That is, the shock-absorbing component designed in this invention can both absorb and support the rotating component without affecting the rotation of the ducted wind turbine. To accommodate the radial displacement of the shock absorber assembly, this invention designs a radial contraction assembly for driving the shock absorber assembly to perform radial displacement. The radial contraction assembly utilizes a guide groove on a cam disk to achieve radial linear displacement of the shock absorber assembly when the radial contraction assembly rotates.

[0012] In summary, this invention enables ducted wind turbines to rotate at any angle within 360° in the horizontal direction to adapt to different wind directions, while also achieving vibration reduction.

[0013] In a preferred embodiment, the rotary support mechanism further includes a support column; the support column is located at the center of the circular sliding track of the rotating component, with its top connected to the ducted windmill and its bottom rotatably connected to the base.

[0014] When the rotating component drives the ducted wind turbine to rotate, the support column rotates around its own axis, which can both support the ducted wind turbine and not affect its rotation. That is, by setting the support component and the support column to support the ducted wind turbine at the same time, the present invention can improve the stability of the support for the ducted wind turbine.

[0015] Preferably, at least two support members are symmetrically arranged around the support column. In this case, the two support members and the support column are arranged on the same straight line, preferably on the axial direction of the ducted wind turbine, which further improves the support stability of the ducted wind turbine.

[0016] In a preferred embodiment, the ducted multi-stage turbocharged wind turbine generator also includes: The wind direction detection module has multiple units arranged circumferentially along the circular sliding trajectory of the rotating component, which are used to detect wind direction; The rotation angle calculation module calculates the rotation angle of the ducted wind turbine based on the wind direction collected by the wind direction detection module. The controller receives the calculation results from the rotation angle calculation module and controls the first drive component to drive the rotating part to slide.

[0017] The wind direction detection module, rotation angle calculation module and controller of the present invention constitute a control system. Through this control system, the ducted wind turbine can automatically rotate as the direction changes to adapt to the wind direction change, so as to better adapt to the environment with variable wind direction. That is, the present invention can make full use of the wind energy of the water environment.

[0018] In a preferred embodiment, a first annular positioning element is coaxially arranged on the outer side of the support column, and multiple wind direction detection modules are evenly arranged on the outer wall of the first annular positioning element. The first annular positioning element is fixed and does not rotate with the support column, so as to ensure that the position of the multiple wind direction detection modules remains unchanged and the wind direction can be tested based on the wind direction detection modules.

[0019] Specifically, the first annular positioning member can be connected to the base via a support rod. Preferably, the position of the first annular positioning member is lower than the lowest position of the ducted wind turbine.

[0020] In a preferred embodiment, the shock-absorbing assembly further includes a top elastic member arranged parallel to the bottom elastic member. When the bottom elastic member is inserted into the gap, the top elastic member is positioned on top of the rotating member and in contact with the rotating member.

[0021] The shock-absorbing component described above can support and dampen the rotating component by inserting the bottom elastic clip into the gap. On the other hand, the top elastic clip can further dampen the component, and the impact fluctuations received by the bottom elastic clip can be transmitted to the top elastic clip for release and damping.

[0022] In a preferred embodiment, the damping assembly further includes an elastomer positioned between a top elastic member and a bottom elastic member, wherein the elastomer contacts the outer wall of the rotating member after the bottom elastic member is inserted into the gap.

[0023] The elastic body provided in this invention can further achieve shock absorption. On the one hand, the impact fluctuations received by the bottom elastic clip can be transmitted to the top elastic clip for release through the elastic body. On the other hand, the elastic clip can also absorb the vibration of the rotating part. The elastic body, the top elastic clip and the bottom elastic clip wrap the rotating part inside, which has a better shock absorption effect.

[0024] In a preferred embodiment, the bottom elastic clip and / or the top elastic clip are arc-shaped, adapting to the shape of the rotating component and the base.

[0025] In a preferred embodiment, the radial shrinkage assembly includes a second annular positioning member, a cam disk coaxially disposed with the second annular positioning member, and the bottom of the cam disk slidably connected to the top of the second annular positioning member.

[0026] The second annular positioning element of the present invention provides sliding support for the rotation of the cam disk, which can improve the stability of the radial contraction assembly.

[0027] In a preferred embodiment, the second drive assembly is mounted on the second annular positioning member, which is fixed to the outer wall of the base, and the bottom of the second annular positioning member is flush with the bottom of the base.

[0028] Since this invention requires the radial displacement of the shock-absorbing component to support and dampen the rotating component, and the position of the rotating component is adjusted relative to changes in wind direction, when the rotating component rotates to the point where the bottom slider and the bottom elastic clip are in the same radial direction, it will affect the radial displacement of the bottom elastic clip. Therefore, this invention can achieve the rotation of the shock-absorbing component to make the bottom elastic clip and the slider misaligned and not in the same radial direction, so as to ensure the normal radial displacement of the shock-absorbing component.

[0029] In one alternative embodiment, an infrared sensor is installed on the shock-absorbing assembly. The infrared sensor detects whether the support or slider is in the radial movement direction of the shock-absorbing assembly and transmits the collected signal to a controller. The controller then determines whether to activate the first drive assembly to rotate the rotating component by a certain angle so that the support or slider is offset from the radial movement direction of the shock-absorbing assembly. Preferably, the slider and the support can be positioned in the same circumferential direction, i.e., the slider is positioned directly below the support.

[0030] In another alternative approach, pressure sensors can be installed on the inner ends of the bottom elastic clip and the top elastic clip. When the shock absorber assembly moves radially, the pressure sensors generate pressure changes, indicating that the radial movement of the bottom elastic clip and the top elastic clip is resisted and requires rotation to offset the radial movement direction of the support, slider and shock absorber assembly.

[0031] In a preferred embodiment, the second drive component is a telescopic member, the telescopic end of which is hinged to the cam disk; or the second drive component is a second motor, which is connected to the cam disk via a gear pair.

[0032] In a preferred embodiment, the rotating component is a ring with a ring-shaped rack. The first driving assembly drives the ring-shaped rack to rotate the rotating component. Preferably, the rotating component adopts a ring structure, which has better structural stability; multiple sliders are provided at the bottom of the ring.

[0033] The above-described configuration of the present invention enables the rotating component to be driven to rotate by the first driving component, and also has good structural stability. The first driving component does not directly act as a force-bearing component, but provides the force required for the rotating component to rotate through a gear structure.

[0034] In a preferred embodiment, multiple sliders are evenly arranged circumferentially along the circular sliding path of the rotating component; the rotating component is slidably connected to the base via the sliders.

[0035] In a preferred embodiment, the annular rack is disposed on the inner wall of the ring, and the first drive assembly is disposed on the inner side of the ring, which can make full use of the internal space of the base and avoid the rotating support mechanism occupying too much space.

[0036] In a preferred embodiment, the first drive component is a first motor.

[0037] In a preferred embodiment, the base includes an annular support and a disc disposed inside the annular support, the top of the disc being lower than the top of the annular support, a first drive assembly mounted on the disc, and the bottom of a rotating component slidably connected to the top of the annular support.

[0038] The above-described configuration of the present invention enables the formation of an installation space above the disc for installing other components of the rotary support mechanism, which helps to save space and allows the rotary support mechanism to be installed at its fixed position via the disc.

[0039] In a preferred embodiment, the ducted wind turbine includes a duct and a shaft, the shaft being rotatably mounted on the central axis of the duct via an airfoil support; the tail end of the shaft is connected to a generator via a gearbox; a first-stage turbine and a second-stage turbine are sequentially mounted on the shaft along the airflow direction.

[0040] The ducted wind turbine of the present invention not only utilizes a first-stage turbine and a second-stage turbine to improve wind energy utilization, but also reduces the resistance of airflow in the duct by fixing the rotating shaft with an airfoil-shaped bracket, which is conducive to improving wind energy utilization.

[0041] In a preferred embodiment, multiple short-bladed turbines are arranged on the shaft between the first-stage turbine and the second-stage turbine. The blades of the short-bladed turbines are shorter than those of the first-stage and second-stage turbines to further improve wind energy utilization.

[0042] In a preferred embodiment, a first annular guide block is provided on the inner wall of the duct at the front end of the first-stage turbine. The radial thickness of the first annular guide block gradually increases from the airflow direction, and the maximum thickness of the first annular guide block is greater than the gap between the blade of the first annular guide block and the inner wall of the duct.

[0043] In a preferred embodiment, a second annular guide block is provided on the inner wall of the duct at the front end of the second-stage turbine. The radial thickness of the second annular guide block gradually increases from the airflow direction, and the maximum thickness of the second annular guide block is greater than the gap between the blade of the second annular guide block and the inner wall of the duct.

[0044] The arrangement of the first and second annular guide blocks in this invention can reduce the gap between the airflow entering the inner wall of the duct and the turbine blades, allowing for an appropriate increase in the gap between the turbine and the inner wall of the duct, thereby reducing the requirements for machining accuracy and manufacturing costs.

[0045] Furthermore, the first annular guide block of the present invention can guide the airflow smoothly into the contraction section, reducing turbulence caused by the inner diameter.

[0046] In a preferred embodiment, the duct includes, in sequence along the airflow direction, an inlet section, a rectifying section, a contraction section, and a diffuser section. The inner diameter of the rectifying section is larger than that of the diffuser section. A first-stage turbine is located in the rectifying section, and a second-stage turbine is located at the front end of the diffuser section.

[0047] This invention improves wind energy utilization by setting the culvert to a variable diameter structure, which facilitates the acceleration of airflow within the culvert.

[0048] In a preferred embodiment, the sidewall of the diffuser section is provided with a pressure relief hole.

[0049] The pressure relief hole in this invention can accelerate the airflow out of the diffuser section and reduce noise.

[0050] In a preferred embodiment, a flow-guiding protective shell is provided on the outside of the gearbox on the rotating shaft, and the outer wall of the flow-guiding protective shell is a smooth curved surface.

[0051] The airflow-guiding protective shell of this invention can protect the gearbox, reduce wind resistance, and guide the airflow from the duct outlet, thereby quickly expelling the airflow from the duct outlet and reducing noise.

[0052] The ducted multi-stage turbocharged wind turbine power generation device of the present invention is particularly suitable for scenarios with variable wind direction. Therefore, the application of the ducted multi-stage turbocharged wind turbine power generation device of the present invention includes generating electricity using wind energy from land or water. When generating electricity using wind energy from land, the ducted multi-stage turbocharged wind turbine power generation device is installed on the roof of a building or on the ground. When generating electricity using wind energy from water, the ducted multi-stage turbocharged wind turbine power generation device is installed on a mobile offshore device, a deep-sea drilling platform, a marine ranch, or an offshore island.

[0053] When generating electricity using onshore wind energy, the ducted multi-stage turbocharged wind turbine generator is installed on the roof; offshore mobile units include offshore floating vessels and mobile vessels.

[0054] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The rotary support mechanism of the present invention not only enables the ducted wind turbine to rotate at any angle within 360° in the horizontal direction, but also uses a radial contraction component to drive the shock-absorbing component to insert or move out of the gap between the bottom of the rotating part and the top of the base. When the ducted wind turbine needs to be rotated, the shock-absorbing component is moved out of the gap to enable the ducted wind turbine to rotate. When it is rotated to the designated position, the shock-absorbing component can be inserted into the gap. By inserting the bottom elastic clip into the gap, the shock of the rotating part is damped, avoiding the airflow effect that causes the rotating part to slide and thus cause greater friction between the rotating part and the top of the base.

[0055] 2. The present invention, through the wind direction detection module, rotation angle calculation module and controller, can adjust the direction of the air inlet of the ducted twin-turbocharged wind turbine according to the real-time wind direction, so as to make full use of the wind energy of the aquatic environment. Attached Figure Description

[0056] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the ducted multi-stage turbocharged wind turbine power generation device of the present invention; Figure 2 This is a partial cross-sectional view of the ducted multi-stage turbocharged wind turbine power generation device of the present invention; Figure 3 Top view of the rotary support mechanism of the present invention Figure 1 ; Figure 4 Top view of the rotary support mechanism of the present invention Figure 2 ; Figure 5 This is a schematic diagram of the rotary support mechanism of the present invention in a rotating state; Figure 6 This is a schematic diagram of the rotary support mechanism of the present invention in a supported state; Figure 7 This is a top view of the support column of the present invention; Figure 8 This is a schematic diagram of the ducted wind turbine of the present invention.

[0057] The attached diagram shows the markings and corresponding component names: 1- Ducted wind turbine; 2- Rotary support mechanism; 3- Wind direction detection module; 4- Support frame; 5- Gearbox; 6- Generator; 11-Ductwork; 12-Shaft; 13-First stage turbine; 14-Second stage turbine; 15-First annular guide vane; 16-Second annular guide vane; 17-Short-blade turbine; 111 - Air inlet section; 112 - Rectifier section; 113 - Contraction section; 114 - Diffusion section; 121-Airfoil-shaped support; 122-Airflow-guided protective shell; 21-Base; 22-Rotating component; 23-Support component; 24-Support column; 25-Radial contraction assembly; 26-Shock absorption assembly; 27-First motor; 28-Gap; 29-Support rod; 211- Annular support; 212- Disk; 221-Ring rack; 222-Slider; 241 - First annular positioning component; 251 - Second annular positioning element; 252 - Cam disk; 2511 - Convex plate; 2512 - Telescopic component; 2521 - Guide groove; 261-Connector; 262-Guide rod; 263-Bottom elastic clip; 264-Top elastic element; 265-Elastic body; 266-Limiting rod; 100 - Wind direction detection module A; 200 - Wind direction detection module B; 300 - Wind direction detection module C; 400 - Wind direction detection module D; 500 - Wind direction detection module E; 600 - Wind direction detection module F. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. The embodiments described below are some, but not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0059] In the following description, numerous specific details are set forth to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, materials, or methods are not specifically described to avoid obscuring the invention. Unless otherwise specified, the materials, instruments, and reagents used in the following embodiments are commercially available. Unless otherwise specified, the techniques used in the embodiments are conventional methods well known to those skilled in the art.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0061] Example 1: like Figures 1-8 As shown, the ducted multi-stage turbocharged wind turbine power generation unit includes: A ducted wind turbine 1 includes at least two turbine stages. The ducted wind turbine 1 can employ any existing technology. In this embodiment, the ducted wind turbine 1 includes a duct 11 and a rotating shaft 12. The rotating shaft 12 is rotatably mounted on the central axis of the duct 11 via an airfoil-shaped support 121. The tail end of the rotating shaft 12 is connected to a generator 6 via a gearbox 5. In this embodiment, the generator 6 is coaxially mounted with the rotating shaft 12 within the duct 11. The generator 6 can be fixed by a support frame 4, the shape of which can be airfoil-shaped or other structures. A first-stage turbine 13 and a second-stage turbine 14 are sequentially arranged on the rotating shaft 12 along the wind flow direction. Preferably, to further improve wind energy utilization, multiple short-blade turbines 17 are arranged on the rotating shaft 12 between the first-stage turbine 13 and the second-stage turbine 14. The blades of the short-blade turbines 17 are shorter than the blades of the first-stage turbine 13 and the second-stage turbine 14. The duct 11 includes, sequentially along the airflow direction, an inlet section 111, a rectifying section 112, a contraction section 113, and a diffuser section 114. The inner diameter of the rectifying section 112 is larger than the inner diameter of the diffuser section 114. The gearbox 5 and the generator 6 are located in the diffuser section 114. The inner diameters of both the inlet section 111 and the contraction section 113 gradually decrease along the airflow direction. That is, in this embodiment, the inlet section 111 and the contraction section 113 form a hyperbolic guide wall, which enables secondary acceleration of the airflow within the duct 11. The power generation process in this embodiment is as follows: When the airflow enters the duct 11, it first enters the first-stage turbine 13 for initial acceleration and then enters the rectifier section 112, causing the first-stage turbine 13 to rotate. The rotation of the first-stage turbine 13 drives the shaft 12 to rotate, and the rotation of the shaft 12 drives the second-stage turbine 14 to rotate. At the same time, the airflow passes through the contraction section 113 for secondary acceleration and then enters the diffusion section 114, causing the second-stage turbine 14 to accelerate. That is, the second-stage turbine 14 rotates under the action of the shaft 12 and the airflow. The rotation of the shaft 12 is accelerated by the joint rotation of the first-stage turbine 13 and the second-stage turbine 14, which converts the wind energy in the duct into mechanical energy as much as possible. Then, the mechanical energy is converted into electrical energy by the generator 6.

[0062] In this embodiment, an airfoil bracket 121 is used to install the rotating shaft 12 inside the duct 11. The airfoil bracket 121 is designed with reference to the shape of an aircraft wing and has low wind resistance. Specifically, in this embodiment, a bearing is set on the rotating shaft 12, and an airfoil fixing plate is set on both sides of the rotating shaft 12 on the outer wall of the bearing. One end of the airfoil fixing plate is connected to the bearing, and the other end is connected to the inner wall of the duct 11. Preferably, the airfoil bracket 121 is installed at the rear end of the first-stage turbine 13. Preferably, airfoil brackets 121 are set at the rear ends of both the first-stage turbine 13 and the second-stage turbine 14.

[0063] A rotary support mechanism 2 is used to support the ducted wind turbine 1 and enable the ducted wind turbine 1 to rotate. It includes a base 21, a rotating component 22, a support component 23, a radial contraction assembly 25, a shock-absorbing assembly 26, and a first drive assembly. The rotating component 22 is circumferentially slidably disposed on the top of the base 21, and there is a gap 28 between the bottom of the rotating component 22 and the top of the base 21 to facilitate the sliding of the rotating component 22. The ducted wind turbine 1 can rotate at any angle within 360° in the horizontal direction by sliding the rotating component 22. The top of the support component 23 is connected to the ducted wind turbine 1, and the bottom is connected to the rotating component 22. The radial contraction assembly 25 is used to drive the shock-absorbing assembly 26 to insert or move out of the gap 28. The first drive assembly is used to drive the rotating component 22 to slide.

[0064] In this embodiment, two support members 23 are provided. The two support members 23 are located at both ends of the same diameter on the circular sliding trajectory of the rotating member 22. The support member 23 includes an arc-shaped support plate that cooperates with the outer wall of the duct 11 and a vertical support member. The arc-shaped support plate can be connected to the outer wall of the duct 11 by bolts. The top of the vertical support member is connected to the arc-shaped support plate, and the bottom is connected to the rotating member 22. The arc-shaped support plate is coaxially arranged with the duct 11.

[0065] In this embodiment, the rotating component 22 is a ring, and a ring rack 221 is provided on the ring. The first driving component is a first motor 27, and a drive gear is provided on the power output shaft of the first motor 27. The drive gear meshes with the ring rack 221, and the rotating component 22 rotates through the transmission between the drive gear and the ring rack 221. Multiple sliders 222 are provided at the bottom of the ring to achieve a gap 28 between the ring and the top of the annular support 211. Preferably, the ring rack 221 is provided on the inner wall of the ring, and the first driving component is provided on the inner side of the ring.

[0066] In this embodiment, to facilitate the fixing of the rotary support mechanism 2 and the installation of components such as the first motor 27, a preferred structure of the base 21 is as follows: The base 21 includes an annular support 211 and a disc 212 placed inside the annular support 211. The top of the disc 212 is lower than the top of the annular support 211. A first drive assembly is mounted on the disc 212. The bottom of the rotating member 22 is slidably connected to the top of the annular support 211, specifically through a slider 222 at the bottom of the rotating member 22 and an annular groove at the top of the annular support 211. The disc 212 can be fixed to the ground or other locations where power generation devices are installed by bolts.

[0067] In a preferred embodiment, to improve the support stability of the rotary support mechanism 2, the rotary support mechanism 2 further includes a support column 24; the support column 24 is located at the center of the circular sliding track of the rotating component 22, the top of the support column 24 is connected to the ducted windmill 1, and the bottom is rotatably connected to the base 21.

[0068] The radial shrinkage assembly 25 includes a cam disk 252 and a second drive assembly for driving the cam disk 252 to rotate. The cam disk 252 is provided with a plurality of guide grooves 2521. The guide grooves 2521 are arc-shaped grooves and their two ends are not in the same circumferential direction. The radial shrinkage assembly 25 is any existing technology that can realize the rotation of the cam disk 252.

[0069] In this embodiment, the inner wall of the cam disk 252 is slidably connected to the outer wall of the annular support 211, and an outer rack is provided on the outer wall of the cam disk 252. The second drive component is a second motor, which drives the outer rack to rotate, thereby realizing the rotation of the cam disk 252.

[0070] The shock-absorbing assembly 26 includes a guide rod 262 slidably disposed in the guide groove 2521. The top of the guide rod 262 is connected to a bottom elastic clip 263 via a connector 261. A limiting rod radially slidably disposed on the base 21 is provided on the guide rod 262. For example... Figures 3-6 As shown, a radial groove is provided on the side wall of the annular support 211 to allow the limiting rod 266 to move radially. The limiting rod 266 is slidably disposed in the radial groove and is used to limit the circumferential displacement of the guide rod 262. In conjunction with the guide groove 2521, when the cam disk 252 rotates, the guide rod 262 can only move radially, thereby driving the bottom elastic clip 263 to move radially, allowing the bottom elastic clip 263 to insert into or move out of the gap 28. The bottom elastic clip 263 can be any elastic pad with shock absorption effect, specifically a plastic pad, etc. The specific shape of the bottom elastic clip 263 can be an arc shape. The number of damping components 26 is at least two. When the number of damping components 26 is less, the circumferential width of the bottom elastic clip 263 is designed to be relatively wider to ensure that there is not too large a gap between two adjacent bottom elastic clips 263 after the bottom elastic clip 263 is inserted into the gap 28, thereby ensuring the damping effect of the damping components 26. When the number of damping components 26 is relatively more, the circumferential width of a single bottom elastic clip 263 can be reduced, which is more conducive to the radial displacement of the damping components 26 and ensures that the bottom elastic clip 263 can be smoothly inserted into the gap 28.

[0071] In a specific case, such as Figure 3 As shown, six shock-absorbing components 26 are arranged circumferentially along the circular sliding trajectory of the rotating component 22, and the gap between two adjacent bottom elastic clips 263 is greater than the width of the slider 222.

[0072] In a preferred embodiment, the shock-absorbing assembly 26 further includes a top elastic member 264 arranged parallel to the bottom elastic member 263. When the bottom elastic member 263 is inserted into the gap 28, the top elastic member 264 is positioned on top of the rotating member 22 and in contact with the rotating member 22.

[0073] In a preferred embodiment, the damping assembly 26 further includes an elastic body 265, which is positioned between the top elastic member 264 and the bottom elastic member 263. When the bottom elastic member 263 is inserted into the gap 28, the elastic body 265 contacts the outer wall of the rotating member 22. Preferably, the bottom elastic member 263 and the top elastic member 264 are arc-shaped.

[0074] The rotary support mechanism 2 of this embodiment can not only enable the ducted wind turbine to rotate at any angle within 360° in the horizontal direction, but also use the radial contraction component 25 to drive the shock absorption component 26 to insert or move out of the gap 28 between the bottom of the rotating component 22 and the top of the base 21. When it is necessary to rotate the ducted wind turbine, the shock absorption component 26 is moved out of the gap 28 to enable the ducted wind turbine to rotate. When it is rotated to the designated position, the shock absorption component 26 can be inserted into the gap 28. Through the bottom elastic clip 263 inserted into the gap 28, the shock absorption of the rotating component 22 is achieved, avoiding the airflow effect from causing the rotating component 22 to slide and thus causing greater friction between the rotating component 22 and the top of the base 21.

[0075] The ducted multi-stage turbocharged wind turbine power generation device of this embodiment is particularly suitable for scenarios with variable wind direction. Its applications include generating electricity using wind energy from land or water. When generating electricity using wind energy from land, the ducted multi-stage turbocharged wind turbine power generation device is installed on the roof of a building or on the ground. When generating electricity using wind energy from water, the ducted multi-stage turbocharged wind turbine power generation device is installed on offshore mobile devices, deep-sea drilling platforms, marine ranches, or outlying islands.

[0076] Specifically, when generating electricity using onshore wind energy, the ducted multi-stage turbocharged wind turbine generator is installed on the roof; offshore mobile devices include offshore floating vessels and ocean-going mobile vessels.

[0077] Example 2: This embodiment is based on Embodiment 1, and the difference between it and Embodiment 1 is as follows: The rotation of the cam disk 252 is different from that of the second drive component.

[0078] In this embodiment, the radial contraction assembly 25 includes a second annular positioning member 251, a cam disk 252 coaxially disposed with the second annular positioning member 251, and the bottom of the cam disk 252 slidably connected to the top of the second annular positioning member 251. A second drive assembly is mounted on the second annular positioning member 251. The second drive assembly is a telescopic member 2512, the telescopic end of which is hinged to the cam disk 252; or, the second drive assembly is a second motor, which is connected to the cam disk 252 via a gear pair. Specifically, a protruding plate 2511 is provided on the outer wall of the second annular positioning member 251, and the telescopic member 2512 is mounted on the protruding plate 2511.

[0079] This embodiment achieves better stability by setting a second annular positioning element 251 to slide and support the cam disk 252 compared to embodiment 1.

[0080] Example 3: This embodiment is based on Embodiment 1 or Embodiment 2. In this embodiment, in order to enable the ducted wind turbine 1 to automatically rotate and adjust its direction based on the current wind direction, the ducted multi-stage turbocharged wind turbine power generation device further includes: The wind direction detection module 3, having multiple modules arranged circumferentially along the circular sliding trajectory of the rotating component 22, is used to detect wind direction. Specifically, to achieve better wind direction detection, the rotary support mechanism 2 also includes a first annular positioning component 241 located at the center of the circular sliding trajectory of the rotating component 22. The first annular positioning component 241 is connected to the base 21 via a support rod 29. Multiple wind direction detection modules 3 are evenly arranged on the outer wall of the first annular positioning component 241. Preferably, the first annular positioning component 241 is coaxially positioned on the outside of the support column 24 and does not affect the rotation of the support column 24. In a specific example, such as... Figure 7 As shown, six wind direction detection modules 3 are evenly arranged on the outer wall of the first annular positioning component 241. The wind direction detection module 3 is existing technology and can specifically be a sensor for collecting wind speed.

[0081] The rotation angle calculation module calculates the rotation angle of the ducted wind turbine 1 based on the wind direction collected by the wind direction detection module 3. The controller receives the calculation results from the rotation angle calculation module and controls the first drive component to drive the rotating part 22 to slide.

[0082] The working process of this embodiment is as follows: One of the multiple wind direction detection modules 3 is defined as the reference wind flow position. The angles between the other wind direction detection modules 3 and the wind direction detection module 3 corresponding to the reference wind flow position are marked in a clockwise or counterclockwise manner. When the axis of the ducted wind turbine 1 is parallel to the reference wind flow position, the corresponding first motor 27 is set as the initial state. The controller determines the rotation angle of the ducted wind turbine 1 based on the detection results of the wind direction detection module 3, and then controls the first motor 27 to rotate by the corresponding angle so that the ducted wind turbine 1 rotates to make its axis located in the detected wind flow direction.

[0083] In a specific case, such as Figure 7 As shown, the six wind direction detection modules 3 are wind direction detection module A 100, wind direction detection module B 200, wind direction detection module C 300, wind direction detection module D 400, wind direction detection module E 500, and wind direction detection module F 600. Wind direction detection module A 100 is defined as the reference wind flow position. Assuming that the initial wind flow direction is the reference wind flow position, the axis of the ducted wind turbine 1 is parallel to the straight line between wind direction detection modules A 100 and D 400. When the detected wind flow direction corresponds to the direction of wind direction detection module B 200, the ducted wind turbine 1 needs to rotate 60°. At this time, the output of the rotation angle calculation module is 60°, and the controller controls the first motor 27 to drive the rotating component 22 to rotate 60°. In this embodiment, the rotation angle calculation module stores the numbers of multiple wind direction detection modules 3, and sets one of them as the reference wind flow position. It also stores the angle between each wind direction detection module 3 and the wind direction detection module 3 corresponding to the reference wind flow position. Furthermore, it can compare the wind speeds collected by multiple wind direction detection modules 3, select the wind direction detection module 3 with the current wind speed as the current wind flow, and then determine the angle between the wind direction detection module 3 with the current wind speed and the wind direction detection module 3 corresponding to the reference wind flow position as the output.

[0084] Example 4: This embodiment is based on any one of Embodiments 1-3. In this embodiment, considering that the present invention needs to achieve support and shock absorption for the rotating member 22 through the radial displacement of the shock-absorbing component 26, and that the position of the rotating member 22 is adjusted relative to the change of wind direction, when the rotating member 22 rotates to the point where the bottom slider 222 and the bottom elastic clip 263 are in the same radial direction, it will affect the radial displacement of the bottom elastic clip 263. Therefore, this embodiment achieves the rotation of the shock-absorbing component 26 by setting the bottom elastic clip 263 and the slider 222 to be staggered and not in the same radial direction, so as to ensure the normal radial displacement of the shock-absorbing component 26.

[0085] Specifically, in order to detect whether the slider 222 at the bottom of the rotating component 22 and the bottom elastic clip 263 are in the same radial direction, that is, whether the slider 222 will block the bottom elastic clip 263 from entering the gap 28.

[0086] In one alternative embodiment, an infrared sensor is installed on the inner wall of the bottom elastic clip 263. The infrared sensor is used to detect whether the slider 222 is in the radial movement direction of the shock-absorbing component 26. The collected signal is transmitted to the controller, which determines whether to start the first motor 27 to rotate the rotating component 22 by a certain angle so that the bottom elastic clip 263 and the slider 222 are misaligned in the radial movement direction. When there are a large number of bottom elastic clips 263, only a small angle of rotation of the rotating component 22 is needed to achieve misalignment, so as not to cause the ducted wind turbine 1 to deviate from the wind direction. In order not to affect the wind energy utilization of the ducted wind turbine 1 when it rotates by a certain angle, this embodiment sets more than 12 shock-absorbing components 26, and the circumferential width of the bottom elastic clip 263 is slightly larger than the circumferential width of the slider 222, which facilitates the radial movement of the bottom elastic clip 263.

[0087] In another alternative case, pressure sensors are installed on the inner ends of the bottom elastic clip 263 and the top elastic clip 264. When the shock absorber 26 moves radially, when the pressure signal detected by the pressure sensor reaches the set value (the pressure generated by the normal movement of the bottom elastic clip 263 is less than the pressure generated by the obstruction during its radial movement, because the magnitude of the pressure can be used to determine whether there is obstruction), it indicates that the radial movement of the bottom elastic clip 263 and the top elastic clip 264 is resisted, and it is necessary to rotate the angle so that the radial movement direction of the support 23, the slider 222 and the shock absorber 26 is offset.

[0088] The working process of this embodiment is as follows: The controller drives the second motor to rotate the cam disk 252 counterclockwise, causing the bottom elastic clip 263 to move out of the gap 28. The controller then drives the first motor to rotate the ducted wind turbine 1 to a designated position. An infrared sensor collects signals to determine if the slider 222 and support 23 are on the radial movement path of the bottom elastic clip 263 and the top elastic clip 264. If not, the controller directly drives the second motor to rotate the cam disk 252 clockwise, causing the bottom elastic clip 263 to insert into the gap 28. The top elastic element 264 is located on top of the rotating element 22. If the judgment result is that the slider 222 and the support 23 are on the radial movement path of the bottom elastic clip 263 and the top elastic element 264, the controller drives the first motor to work, so that the rotating element 22 rotates by a small angle, so that the slider 222 and the support 23 are not on the radial movement path of the bottom elastic clip 263 and the top elastic element 264. Then the controller drives the second motor to work, so that the cam disk 252 rotates clockwise, so that the bottom elastic clip 263 is inserted into the gap 28.

[0089] Alternatively, once the ducted wind turbine 1 has rotated to the designated position, the controller directly drives the second motor to rotate the cam disk 252 clockwise, causing the bottom elastic clip 263 to move towards the gap 28. When the pressure sensor generates pressure during the movement, the controller drives the second motor to rotate the cam disk 252 counterclockwise, causing the bottom elastic clip 263 to return to the outer position. The controller then drives the first motor to rotate the rotating component 22 by a small angle. The controller then drives the second motor to rotate the cam disk 252 clockwise, causing the bottom elastic clip 263 to move towards the gap 28 until the pressure sensor generates no pressure during the movement. At this point, the bottom elastic clip 263 is inserted into the gap 28.

[0090] Example 5: This embodiment is based on any one of embodiments 1-4. A first annular guide block 15 is provided on the inner wall of the duct 11 at the front end of the first-stage turbine 13. The radial thickness of the first annular guide block 15 gradually increases from the airflow direction, and the maximum thickness of the first annular guide block 15 is greater than the gap between the blade of the first annular guide block 15 and the inner wall of the duct 11. A second annular guide block 16 is provided on the inner wall of the duct 11 at the front end of the second-stage turbine 14. The radial thickness of the second annular guide block 16 gradually increases from the airflow direction, and the maximum thickness of the second annular guide block 16 is greater than the gap between the blade of the second annular guide block 16 and the inner wall of the duct 11.

[0091] In this embodiment, the arrangement of the first annular guide block 15 and the second annular guide block 16 can reduce the gap between the airflow entering the inner wall of the duct 11 and the turbine blades, allowing for an appropriate increase in the gap between the turbine and the inner wall of the duct 11, thereby reducing the processing accuracy requirements and manufacturing costs.

[0092] Furthermore, the first annular guide block 15 in this embodiment can guide the airflow smoothly into the contraction section 113, reducing turbulence caused by the inner diameter.

[0093] Example 6: This embodiment is based on any one of embodiments 1-4. A flow-guiding protective shell 122 is provided on the outside of the gearbox 5 on the rotating shaft 12. The outer wall of the flow-guiding protective shell 122 is a smooth curved surface.

[0094] Preferably, the sidewall of the diffuser section 114 is provided with a pressure relief hole.

[0095] The airflow-guiding protective shell 122 in this embodiment not only protects the gearbox 5, but also guides airflow to reduce wind noise, and the designed pressure relief hole can further reduce wind noise.

[0096] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0097] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

Claims

1. A ducted multi-stage turbocharged wind turbine power generation device, characterized in that, include: Ducted windmill (1); It includes at least two turbine stages; A rotating support mechanism (2) is used to support the ducted wind turbine (1) and enable the ducted wind turbine (1) to rotate. It includes a base (21), a rotating component (22), a support component (23), a radial shrinkage assembly (25), a shock absorption assembly (26), and a first drive assembly. The rotating component (22) is slidably disposed on the top of the base (21) along a circumferential trajectory, and there is a gap (28) between the bottom of the rotating component (22) and the top of the base (21). The ducted wind turbine (1) can rotate at any angle within 360° in the horizontal direction by sliding the rotating component (22). The top of the support component (23) is connected to the ducted wind turbine (1), and the bottom is connected to the rotating component (22). The first drive assembly is used to drive the rotating component (22) to slide. The radial shrinkage assembly (25) includes a cam disk (252) and a second drive assembly for driving the cam disk (252) to rotate. The cam disk (252) is provided with a plurality of guide grooves (2521). The guide grooves (2521) are arc-shaped and their two ends are not in the same circumferential direction. The shock-absorbing component (26) includes a guide rod (262) slidably disposed in the guide groove (2521), a bottom elastic clip (263) connected to the top of the guide rod (262), and a limiting rod (266) radially slidably disposed on the base (21) on the guide rod (262); the bottom elastic clip (263) is driven to insert into or move out of the gap (28) by the radial contraction component (25).

2. The ducted multi-stage turbocharged wind turbine power generation device according to claim 1, characterized in that, The rotary support mechanism (2) also includes a support column (24); the support column (24) is located at the center of the circular sliding track of the rotating part (22), the top of the support column (24) is connected to the ducted wind turbine (1), and the bottom is rotatably connected to the base (21).

3. The ducted multi-stage turbocharged wind turbine power generation device according to claim 2, characterized in that, Also includes: Wind direction detection module (3), which has multiple units arranged circumferentially along the circular sliding trajectory of the rotating part (22), is used to detect wind direction; The rotation angle calculation module calculates the rotation angle of the ducted wind turbine (1) based on the wind direction collected by the wind direction detection module (3); The controller unit is used to receive the calculation results of the rotation angle calculation module and control the first drive component to drive the rotating part (22) to slide.

4. The ducted multi-stage turbocharged wind turbine power generation device according to claim 3, characterized in that, It also includes a first annular positioning component (241) located at the center of the circular sliding trajectory of the rotating component (22). The first annular positioning component (241) is connected to the base (21) through a support rod (29). Multiple wind direction detection modules (3) are evenly arranged on the outer wall of the first annular positioning component (241).

5. The ducted multi-stage turbocharged wind turbine power generation device according to claim 4, characterized in that, When a support column (24) is provided at the center of the circular sliding trajectory of the rotating component (22), the first annular positioning component (241) is coaxially disposed on the outside of the support column (24).

6. The ducted multi-stage turbocharged wind turbine power generation device according to claim 1, characterized in that, The shock-absorbing component (26) also includes a top elastic member (264) arranged parallel to the bottom elastic member (263). When the bottom elastic member (263) is inserted into the gap (28), the top elastic member (264) is placed on top of the rotating member (22) and in contact with the rotating member (22).

7. The ducted multi-stage turbocharged wind turbine power generation device according to claim 6, characterized in that, The shock-absorbing component (26) also includes an elastomer (265), which is placed between the top elastic member (264) and the bottom elastic member (263). When the bottom elastic member (263) is inserted into the gap (28), the elastomer (265) contacts the outer wall of the rotating member (22).

8. The ducted multi-stage turbocharged wind turbine power generation device according to claim 6, characterized in that, The bottom elastic clip (263) and / or the top elastic clip (264) are arc-shaped and adapted to the rotating part (22).

9. The ducted multi-stage turbocharged wind turbine power generation device according to claim 1, characterized in that, The radial shrinkage assembly (25) includes a second annular positioning member (251), the cam disk (252) is coaxially arranged with the second annular positioning member (251), and the bottom of the cam disk (252) is slidably connected to the top of the second annular positioning member (251).

10. The ducted multi-stage turbocharged wind turbine power generation device according to claim 9, characterized in that, The second drive assembly is mounted on the second annular positioning member (251), and the second annular positioning member (251) is fixed to the outer wall of the base (21).

11. The ducted multi-stage turbocharged wind turbine power generation device according to claim 10, characterized in that, An infrared sensor or a pressure sensor is provided on the shock-absorbing component (26). The infrared sensor or the pressure sensor is used to detect whether the slider (222) at the bottom of the support (23) and the rotating component (22) is in the radial movement direction of the shock-absorbing component (26). The collected signal is transmitted to the controller, which determines whether to start the first drive component to rotate the rotating component (22) by a certain angle so that the slider (222) at the bottom of the rotating component (22) and the support (23) are offset from the radial movement direction of the shock-absorbing component (26).

12. The ducted multi-stage turbocharged wind turbine power generation device according to claim 1, characterized in that, The second drive component is a telescopic member (2512), the telescopic end of which is hinged to the cam disk (252); or the second drive component is a second motor, which is connected to the cam disk (252) via a gear pair.

13. The ducted multi-stage turbocharged wind turbine power generation device according to claim 1, characterized in that, The rotating component (22) is a ring, and a ring rack (221) is provided on the ring. The first driving component drives the ring rack (221) to rotate the rotating component (22). Multiple sliders (222) are provided at the bottom of the ring.

14. The ducted multi-stage turbocharged wind turbine power generation device according to claim 13, characterized in that, Multiple sliders (222) are evenly arranged in the circumferential direction of the circular sliding trajectory of the rotating component (22); the rotating component (22) is slidably connected to the base (21) through the sliders (222).

15. The ducted multi-stage turbocharged wind turbine power generation device according to claim 13, characterized in that, The annular rack (221) is disposed on the inner wall of the ring, and the first driving component is disposed on the inner side of the ring.

16. The ducted multi-stage turbocharged wind turbine power generation device according to any one of claims 1-15, characterized in that, The base (21) includes an annular support (211) and a disc (212) placed inside the annular support (211). The top of the disc (212) is lower than the top of the annular support (211). The first drive assembly is mounted on the disc (212). The bottom of the rotating member (22) is slidably connected to the top of the annular support (211).

17. The ducted multi-stage turbocharged wind turbine power generation device according to any one of claims 1-15, characterized in that, The ducted wind turbine (1) includes a duct (11) and a rotating shaft (12). The rotating shaft (12) is rotatably mounted on the central axis of the duct (11) via an airfoil bracket (121). The tail end of the rotating shaft (12) is connected to a generator (6) via a gearbox (5). A first-stage turbine (13) and a second-stage turbine (14) are sequentially mounted on the rotating shaft (12) along the airflow direction.

18. The ducted multi-stage turbocharged wind turbine power generation device according to claim 17, characterized in that, A plurality of short-bladed turbines (17) are provided on the shaft (12) between the first-stage turbine (13) and the second-stage turbine (14), and the blades of the short-bladed turbines (17) are shorter than the blades of the first-stage turbine (13) and the second-stage turbine (14).

19. The ducted multi-stage turbocharged wind turbine power generation device according to claim 17, characterized in that, The inner wall of the duct (11) is provided with a first annular guide block (15) at the front end of the first stage turbine (13). The radial thickness of the first annular guide block (15) gradually increases from the wind direction, and the maximum thickness of the first annular guide block (15) is greater than the gap between the blade of the first annular guide block (15) and the inner wall of the duct (11).

20. The ducted multi-stage turbocharged wind turbine power generation device according to claim 17, characterized in that, The inner wall of the duct (11) is provided with a second annular guide block (16) at the front end of the second stage turbine (14). The radial thickness of the second annular guide block (16) gradually increases from the wind direction, and the maximum thickness of the second annular guide block (16) is greater than the gap between the blade of the second annular guide block (16) and the inner wall of the duct (11).

21. The ducted multi-stage turbocharged wind turbine power generation device according to claim 18, characterized in that, The duct (11) includes, in sequence along the airflow direction, an air intake section (111), a rectifier section (112), a converging section (113), and a diffuser section (114). The inner diameter of the rectifier section (112) is larger than the inner diameter of the diffuser section (114). The first-stage turbine (13) is located in the rectifier section (112), and the second-stage turbine (14) is located at the front end of the diffuser section (114).

22. The ducted multi-stage turbocharged wind turbine power generation device according to claim 21, characterized in that, The diffuser section (114) has pressure relief holes on its sidewalls.

23. The ducted multi-stage turbocharged wind turbine power generation device according to claim 17, characterized in that, A flow-guiding protective shell (122) is provided on the outside of the gearbox (5) on the rotating shaft (12), and the outer wall of the flow-guiding protective shell (122) is a smooth curved surface.

24. The application of the ducted multi-stage turbocharged wind turbine power generation device as described in any one of claims 1-23, characterized in that, The applications include generating electricity using wind energy from land or water; when generating electricity using wind energy from land, the ducted multi-stage turbocharged wind turbine generator is installed on the roof of a building or on the ground; when generating electricity using wind energy from water, the ducted multi-stage turbocharged wind turbine generator is installed on a mobile offshore device, a deep-sea drilling platform, a marine ranch, or an offshore island.

25. The application according to claim 24, characterized in that, When generating electricity using onshore wind energy, the ducted multi-stage turbocharged wind turbine generator is installed on the roof; the offshore mobile device includes a ship.

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