A straight-angle transmission ducted multi-blade coaxial wind turbine

Abstract

The present application belongs to the field of wind power generation equipment, especially a straight-angle transmission duct type multi-blade coaxial wind turbine, aiming at the defects of the existing complex structure, low transmission efficiency, insufficient wind resistance and other defects, it is difficult to meet the application requirements of distributed power generation and low wind speed scene, the following scheme is proposed, which includes: multi-blade coaxial impeller system, containing at least two groups of coaxial impellers, each group of impellers is composed of 5 or more inner blades, the outer part of the inner blade is provided with an annular duct; The straight-angle transmission system includes a bevel gear set, which realizes 90° conversion of the power transmission direction by using the bevel gear set, and the bevel gear set includes a driving bevel gear and a driven bevel gear; Modular truss type rack, supporting the impeller and the straight-angle transmission system, the annular duct is located inside the modular truss type rack; Power generation and control system, realize energy conversion and intelligent regulation and control, the wind energy utilization rate of the present application is improved, the structural stability is enhanced, the maintenance convenience is improved, and the environmental adaptability is strong.

Description

Technical Field

[0001] This invention relates to the field of wind power generation equipment technology, and in particular to a right-angle drive ducted multi-bladed coaxial wind turbine. Background Technology

[0002] Traditional horizontal axis wind turbines have the following technical drawbacks in practical applications: 1. Low wind energy capture efficiency: The single set of blades has limited ability to capture wind energy, making it difficult to start up and generate enough power under low wind speed conditions, making it difficult to fully utilize distributed low wind speed wind energy resources.

[0003] 2. Poor structural stability: The blades are directly exposed to the airflow and are susceptible to turbulence and gusts, which can lead to structural fatigue and noise problems, limiting their application in typhoon-prone areas.

[0004] 3. Unreasonable transmission layout: Traditional coaxial direct drive transmission systems have limited space layout, with the generator and impeller arranged on the same axis, making inspection and maintenance difficult and increasing operation and maintenance costs.

[0005] 4. Lack of guiding structure: The lack of an efficient guiding structure makes it easy for airflow to experience turbulence loss before entering the blades, making it difficult to further improve wind energy utilization and energy density.

[0006] While existing technologies include ducted or multi-blade wind turbine solutions, they generally suffer from drawbacks such as complex structure, low transmission efficiency, and insufficient wind resistance, making it difficult to meet the application requirements of distributed generation and low-wind-speed scenarios. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of the prior art by proposing a right-angle drive ducted multi-bladed coaxial wind turbine.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A right-angle driven ducted multi-bladed coaxial wind turbine generator includes: A multi-bladed coaxial impeller system includes at least two sets of coaxially arranged impellers, each set of impellers consisting of 5 or more inner blades, with an annular duct provided outside the inner blades; A right-angle transmission system, including a bevel gear set, is used to achieve a 90° change in the direction of power transmission. The bevel gear set includes a driving bevel gear and a driven bevel gear. A modular truss frame supports the impeller and right-angle drive system, with the annular duct located inside the modular truss frame; Power generation and control systems enable energy conversion and intelligent regulation.

[0009] Preferably, the inner blades adopt an airfoil design, and a hub is provided in the modular truss frame. The inner blades are evenly distributed along the circumference of the hub, and the blade material is basalt fiber composite material or high-strength aluminum alloy.

[0010] Preferably, the inner wall of the annular duct is streamlined, which can contract and accelerate the incoming flow, thereby increasing the airflow velocity at the blades.

[0011] Preferably, the bevel gear set of the right-angle transmission system is carburized and quenched, and the transmission efficiency is ≥98%.

[0012] Preferably, the modular truss frame is made of basalt fiber composite material or high-strength steel, which has excellent typhoon resistance and impact resistance.

[0013] Preferably, the power generation and control system integrates intelligent pitch and yaw functions, which can automatically adjust the operating status according to wind speed and wind direction.

[0014] Preferably, the top of the modular truss frame is equipped with a flow guide shroud, which can guide the airflow evenly into the annular duct and reduce turbulence loss.

[0015] Preferably, the modular truss frame is equipped with adjustable legs at the bottom to adapt to different terrains and installation scenarios.

[0016] Preferably, a first mounting bracket is fixedly installed inside the modular truss frame, a motor is mounted on the first mounting bracket, an elastic coupling is mounted on the output shaft of the motor, the top end of the elastic coupling is connected to the driven bevel gear, and the driven bevel gear meshes with the driving bevel gear.

[0017] Preferably, a second mounting bracket is fixedly installed inside the modular truss frame, and a main shaft is rotatably mounted on the second mounting bracket. The main shaft is connected to a wheel hub. A support frame is fixedly installed inside the modular truss frame, and a bearing is installed on the top of the support frame. One end of the main shaft is connected to the inner ring of the bearing. A sealing shell is installed on the top of the second mounting bracket, and the driven bevel gear and the driving bevel gear are located inside the sealing shell.

[0018] The beneficial effects of the right-angle drive ducted multi-bladed coaxial wind turbine generator described in this invention are as follows: 1. Improved wind energy utilization: The multi-stage coaxial impeller and ducted flow guide structure work together to achieve efficient start-up and power generation at low wind speeds, and the wind energy capture efficiency is improved by more than 30% compared with traditional models; 2. Enhanced structural stability: The right-angle transmission layout and modular frame design effectively reduce the vibration and fatigue of the transmission system, and the typhoon resistance level can reach level 12 or above; 3. Improved ease of maintenance: The generator and transmission system are arranged separately, providing ample space for maintenance and reducing maintenance costs by more than 40%; 4. Strong environmental adaptability: It can adapt to various scenarios such as mountains, coastal areas, and distributed power stations, and is especially suitable for applications in areas with low wind speeds and frequent typhoons. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a right-angle drive ducted multi-bladed coaxial wind turbine proposed in this invention; Figure 2 This is a three-dimensional structural diagram of a right-angle drive ducted multi-bladed coaxial wind turbine proposed in this invention. In the diagram: 1. Modular truss frame; 2. Second mounting frame; 3. First mounting frame; 4. Motor; 5. Flexible coupling; 6. Sealing shell; 7. Main shaft; 8. Annular duct; 9. Inner blade; 10. Hub; 11. Support frame. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figures 1-2 A right-angle driven ducted multi-bladed coaxial wind turbine generator, comprising: A multi-bladed coaxial impeller system includes at least two sets of coaxially arranged impellers, each set of impellers consisting of 5 or more inner blades 9, and an annular duct 8 is provided outside the inner blades 9; A right-angle transmission system, including a bevel gear set, is used to achieve a 90° change in the direction of power transmission. The bevel gear set includes a driving bevel gear and a driven bevel gear. Modular truss frame 1 supports the impeller and right-angle transmission system, and annular duct 8 is located inside the modular truss frame 1; Power generation and control systems enable energy conversion and intelligent regulation.

[0022] An annular duct is set on the outside of the impeller. The inner wall of the duct is streamlined, which can contract and accelerate the incoming flow, increase the airflow speed at the blades, and protect the blades from the impact of foreign objects. Adjacent impellers are connected coaxially to form a multi-stage wind energy capture structure, enabling tiered utilization of airflow and improving wind energy capture efficiency.

[0023] A bevel gear set is used to achieve a 90° change in the power transmission direction, converting the horizontal rotational motion of the impeller into vertical rotational motion; The right-angle drive system is integrated inside the modular truss frame 1, and the sealed structure achieves dust and water resistance, reducing the frequency of maintenance. The right-angle drive layout allows the motor to be placed below or to the side of the modular truss frame 1, optimizing the overall space utilization and facilitating inspection and maintenance.

[0024] Frame and support structure The modular truss frame 1 is made of high-strength steel or basalt fiber composite material, welded / bolted together, and has excellent typhoon and impact resistance. The modular truss frame 1 is equipped with a flow guide at the top, which can guide the airflow into the duct evenly and reduce turbulence loss; The bottom is equipped with adjustable support legs, which can adapt to different terrains and installation scenarios, improving the overall stability of the machine.

[0025] Power generation and control systems The motor uses a permanent magnet synchronous generator, which is connected to the output shaft of the right-angle transmission system via a coupling to achieve efficient energy conversion; Equipped with an intelligent pitch and yaw control system, it can automatically adjust the blade angle and overall orientation according to wind speed and direction to maximize power generation efficiency; It integrates fault diagnosis and remote monitoring modules to monitor equipment operating status in real time and improve operation and maintenance efficiency.

[0026] In this embodiment, the inner blade 9 adopts an airfoil design, and the modular truss frame 1 is provided with a hub 10. The inner blade 9 is evenly distributed around the hub 10, and the blade material is basalt fiber composite material or high-strength aluminum alloy.

[0027] In this embodiment, the inner wall of the annular duct 8 is streamlined, which can contract and accelerate the incoming flow, thereby increasing the airflow speed at the blades.

[0028] In this embodiment, the bevel gear set of the right-angle transmission system is carburized and quenched, and the transmission efficiency is ≥98%.

[0029] In this embodiment, the modular truss frame 1 is made of basalt fiber composite material or high-strength steel, which has excellent typhoon resistance and impact resistance.

[0030] In this embodiment, the power generation and control system integrates intelligent pitch and yaw functions, which can automatically adjust the operating status according to wind speed and wind direction.

[0031] In this embodiment, a flow guide is provided on the top of the modular truss frame 1, which can guide the airflow into the annular duct 8 evenly and reduce turbulence loss.

[0032] In this embodiment, the modular truss frame 1 is equipped with adjustable legs at the bottom, which can adapt to different terrains and installation scenarios.

[0033] In this embodiment, a first mounting frame 3 is fixedly installed inside the modular truss frame 1. A motor 4 is installed on the first mounting frame 3. An elastic coupling 5 is installed on the output shaft of the motor 4. The top end of the elastic coupling 5 is connected to the driven bevel gear, and the driven bevel gear meshes with the driving bevel gear.

[0034] In this embodiment, a second mounting bracket 2 is fixedly installed inside the modular truss frame 1. A main shaft 7 is rotatably mounted on the second mounting bracket 2. The main shaft 7 is connected to the hub 10. A support frame 11 is fixedly installed inside the modular truss frame 1. A bearing is installed on the top of the support frame 11. One end of the main shaft 7 is connected to the inner ring of the bearing. A sealing shell is installed on the top of the second mounting bracket 2. The driven bevel gear and the driving bevel gear are located inside the sealing shell.

[0035] Impeller and annular duct installation Five inner blades 9 are fixed to the hub 10 with bolts to form a single impeller; At least two sets of impellers are coaxially mounted on the main shaft 7, and a streamlined annular duct 8 is externally fitted. The annular duct 8 is connected to the modular truss frame 1 via a flange. Adjust the blade installation angle to the optimal angle of attack to ensure maximum lift at rated wind speed.

[0036] Right-angle transmission system assembly A drive bevel gear is installed at the end of the main shaft 7, which meshes with the driven bevel gear in the modular truss frame 1 to achieve 90° transmission. The driven bevel gear shaft is connected to the input shaft of motor 4 via a flexible coupling to ensure smooth transmission; Lubricate the transmission system with grease and seal it to prevent dust and rainwater from entering.

[0037] Rack and overall machine commissioning Assemble the modular truss frame 1, install the adjustable legs and level it; Connect the power generation and control system to perform no-load and load commissioning; Test the pitch and yaw functions to ensure stable operation under different wind speeds and wind directions.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A right-angle driven ducted multi-bladed coaxial wind turbine generator, characterized in that, include: A multi-bladed coaxial impeller system includes at least two sets of coaxially arranged impellers, each set of impellers consisting of 5 or more inner blades (9), and an annular duct (8) is provided outside the inner blades (9). A right-angle transmission system, including a bevel gear set, is used to achieve a 90° change in the direction of power transmission. The bevel gear set includes a driving bevel gear and a driven bevel gear. A modular truss frame (1) supports the impeller and the right-angle transmission system, and an annular duct (8) is located inside the modular truss frame (1); Power generation and control systems enable energy conversion and intelligent regulation.

2. The right-angle drive ducted multi-blade coaxial wind turbine generator according to claim 1, characterized in that, The inner blade (9) adopts an airfoil design. The modular truss frame (1) is equipped with a hub (10). The inner blade (9) is evenly distributed around the hub (10). The blade material is basalt fiber composite material or high-strength aluminum alloy.

3. A right-angle drive ducted multi-blade coaxial wind turbine generator according to claim 2, characterized in that, The inner wall of the annular duct (8) is streamlined, which can contract and accelerate the incoming flow and increase the airflow speed at the blades.

4. A right-angle drive ducted multi-blade coaxial wind turbine generator according to claim 3, characterized in that, The bevel gear set of the right-angle transmission system is carburized and quenched, and the transmission efficiency is ≥98%.

5. A right-angle drive ducted multi-bladed coaxial wind turbine generator according to claim 4, characterized in that, The modular truss frame (1) is made of basalt fiber composite material or high-strength steel, and has excellent typhoon resistance and impact resistance.

6. A right-angle drive ducted multi-bladed coaxial wind turbine generator according to claim 5, characterized in that, The power generation and control system integrates intelligent pitch and yaw functions, which can automatically adjust the operating status according to wind speed and wind direction.

7. A right-angle drive ducted multi-bladed coaxial wind turbine generator according to claim 6, characterized in that, The modular truss frame (1) is equipped with a flow guide shroud on top, which can guide the airflow into the annular duct (8) evenly and reduce turbulence loss.

8. A right-angle drive ducted multi-bladed coaxial wind turbine generator according to claim 7, characterized in that, The modular truss frame (1) is equipped with adjustable legs at the bottom, which can adapt to different terrains and installation scenarios.

9. A right-angle drive ducted multi-bladed coaxial wind turbine generator according to claim 8, characterized in that, The modular truss frame (1) has a first mounting bracket (3) fixedly installed inside. A motor (4) is installed on the first mounting bracket (3). An elastic coupling (5) is installed on the output shaft of the motor (4). The top of the elastic coupling (5) is connected to the driven bevel gear, and the driven bevel gear meshes with the driving bevel gear.

10. A right-angle drive ducted multi-bladed coaxial wind turbine generator according to claim 9, characterized in that, The modular truss frame (1) has a second mounting bracket (2) fixedly installed inside. A main shaft (7) is rotatably mounted on the second mounting bracket (2). The main shaft (7) is connected to the hub (10). A support frame (11) is fixedly installed inside the modular truss frame (1). A bearing is installed on the top of the support frame (11). One end of the main shaft (7) is connected to the inner ring of the bearing. A sealing shell (6) is installed on the top of the second mounting bracket (2). The driven bevel gear and the driving bevel gear are located inside the sealing shell (6).

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