Flow guide enhanced multi-module cooperative wind power generation system

Abstract

The invention discloses a diversion enhanced multi-module collaborative wind power generation system, and belongs to the technical field of wind power generation. The system comprises a wind passing channel formed by a shell, a fairing and a partition plate, and at least two groups of power generation module arrays which are distributed up and down. Each power generation module is composed of a long-barrel-shaped wind roller and a power generator, and at least six circumferentially-inclined blades are arranged on the surface of each wind roller. Airflow is divided into three paths by the guide plates; the airflow in the central duct forms a low-pressure area; the upper airflow and the lower airflow push the power generation modules to rotate correspondingly and interact with the rotating modules in the ducts to generate additional thrust. The flow guide body is arranged according to the channel width to maintain structural stability. According to the invention, wind energy conversion is realized through collaborative design of a modular array and airflow.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation, and particularly relates to a wind power generation system with enhanced flow guiding and multi-module cooperation. Background Art

[0002] Traditional horizontal-axis wind turbines are the most widely used wind power generation devices at present, but they have the following main disadvantages: 1. Poor low-wind-speed performance: A relatively high starting wind speed (usually above 3 - 5 m / s) is required, and the power generation efficiency is significantly reduced under low-wind-speed conditions; 2. High wind-direction dependence: A complex yaw system must be equipped to track wind-direction changes, increasing the system complexity and maintenance cost; 3. Large size limitations: As the power increases, the blade length increases sharply, resulting in a soaring material cost and difficulties in transportation and installation; 4. Prominent environmental problems: The high-speed rotating blades generate relatively large noise and pose a threat to wild animals such as birds; 5. Strong turbulence sensitivity: In complex terrains such as cities, turbulence will significantly reduce the power generation efficiency and increase the mechanical load.

[0003] Although vertical-axis wind turbines have a relatively simple structure, they also have obvious deficiencies: 1. Lower efficiency: The wind energy conversion efficiency is generally 10 - 15 percentage points lower than that of horizontal-axis wind turbines; 2. Difficult self-starting: Most vertical-axis wind turbines require external auxiliary starting, especially under low-wind-speed conditions; 3. Structural vibration problems: The periodic load changes during rotation are likely to cause fatigue damage to the support structure; 4. Large rotational speed limitations: It is difficult to reach a relatively high rotational speed, affecting the direct drive efficiency of the generator; 5. High maintenance cost: The key components are located at the bottom of the tower, and the overall shutdown is required during maintenance.

[0004] These two types of traditional wind power generation technologies also have the following common problems: 1. Poor modular scalability: It is difficult to increase the total installed capacity by simply increasing the number of power generation units; 2. Weak adaptability to wide channels: Lack of optimized design for changes in the width of the wind passage, prone to air flow separation and structural deformation; 3. Insufficient low-wind-speed performance: Poor economy in areas with a relatively low annual average wind speed; 4. Low installation flexibility: High requirements for site conditions and infrastructure; The present invention precisely aims at these technical defects and proposes a wind power generation solution with enhanced flow guiding and multi-module cooperation. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a wind power generation system with enhanced flow guiding and modular cooperation through enhanced flow guiding and modular collaborative design.

[0006] Specifically, a wind power generation system with enhanced flow guiding and modular cooperation includes a flow guiding plate, a wind roller, a generator, a fairing, a partition, a housing, and a flow guiding body.

[0007] The present invention realizes the optimized distribution of air flow through the collaborative design of the flow guiding plate, the central duct, and the upper and lower ducts, and utilizes the Magnus effect to increase the rotation speed of the power generation module, thereby improving the power generation efficiency. The introduction of the flow guiding body solves the deformation problem of the rotating body under the wide channel structure. It is suitable for more scenarios, especially for the utilization of wind energy in narrow spaces or turbulent environments.

[0008] Its core includes: 1. Three-way air flow distribution design (central duct + upper and lower ducts); 2. A power generation module with inclined blades that generates additional thrust through the interaction between rotation and air flow; 3. An expandable modular array layout; 4. A flow guiding body structure to ensure the stability of the wide channel.

[0009] The present invention has achieved the following technical effects compared with the prior art: 1. Adopting a multi-module collaborative design, the air flow is divided into three paths through the flow guiding plate, improving the wind energy capture efficiency at low wind speeds. The blades of the wind roller are designed with a circumferential inclination (an included angle of 30° - 60°) and can be started at low wind speeds. The low-pressure area formed by the air flow in the central duct can enhance the air flow speed in the upper and lower ducts. Compared with traditional wind turbines, the starting wind speed is reduced, and the power generation efficiency is improved at the same wind speed. 2. Standardized power generation module design (wind roller + generator unit), supporting horizontal array expansion, and the number of modules can be flexibly increased according to site conditions. Compared with traditional wind turbines, the installed capacity can be linearly expanded, and the maximum capacity of a single site can be expanded to several times that of traditional wind turbines. 3. Innovative flow guiding body design with adjustable spacing. The pier-type structure effectively suppresses the structural deformation under the wide channel; the spacing between the fairing and the housing is adjustable to adapt to different channel widths. Compared with traditional wind turbines, this design can be applied to more diverse scenarios with different widths, and the structural stability is improved. 4. Closed air flow channel design, reducing noise and significantly reducing the risk of bird strikes; there are no exposed high-speed moving parts, improving safety. Compared with traditional wind turbines, this design can better meet the installation requirements in urban environments and is more beneficial to ecological environmental protection. 5. The three-way air flow distribution design automatically balances the influence of turbulence, and the modular layout disperses mechanical loads. Such a design enables more stable power generation in complex terrains compared to traditional wind turbines, extends the equipment lifespan, and the modular design supports factory prefabrication, shortening the on-site assembly time and the replacement time for individual modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in this specification and form a part of this specification.

[0011] Figure 1 It is a schematic diagram of the structure of the power generation system of the present invention, showing the layout of the housing, the deflector, the power generation module array, and the fluid guide. Figure 2 It is a cross-sectional view of the air passage of the present invention, showing the cooperation relationship between the upper and lower power generation module arrays and the duct. Figure 3 It is a detailed view of the power generation module of the present invention, marking the blade distribution of the wind roller and the connection method of the generator and the partition. Figure 4 It is an example of the style of the wind roller of the present invention.

[0012] Description of the Reference Numerals: 1 - Deflector; 2 - Wind roller; 3 - Generator; 4 - Fairing; 5 - Partition; 6 - Central duct; 7 - Upper duct; 8 - Lower duct; 9 - Inlet; 10 - Outlet; 11 - Housing; 12 - Fluid guide. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The core components of this system include: Generator: Composed of a rotor, a stator, and a housing. The rotor generates a magnetic field, the stator generates an induced current, and the housing provides protection and support. The rotor rotates within the stator to generate electrical energy through the principle of electromagnetic induction.

[0014] Wind roller: Defined as a long cylindrical structure with at least 6 blades evenly distributed circumferentially on its surface, and the blade length is equal to the cylinder diameter.

[0015] Power generation module: Defined as being composed of a wind roller 2 connected by a connecting shaft to 1 - 2 generators 3.

[0016] Power generation module array: Defined as being formed by arranging multiple power generation modules horizontally or horizontally decreasing (increasing), and the system is provided with at least two sets of upper and lower power generation module arrays.

[0017] 1, as Figure 1 , Figure 2As shown, the system working process is as follows: (1) Airflow guidance: The external airflow enters from the inlet 9, and is guided by the guide plate 1 to flow in a specific direction, so that the airflow enters the central duct 6 more concentratedly and smoothly, and then is divided into three paths: the first path is directly discharged through the tail outlet 10 of the central duct 6; the second path pushes the upper wind roller 2 to rotate along the upper fairing 4 and then enters the upper duct 7. The rotating wind roller 2 interacts with the airflow to generate additional thrust, and is discharged from the tail outlet 10 of the upper duct 7 after accelerating the rotation; the third path pushes the lower wind roller 2 to rotate along the lower fairing 4 and then enters the lower duct 8. The rotating wind roller 2 interacts with the airflow to generate additional thrust, and is discharged from the tail outlet 10 of the lower duct 8 after accelerating the rotation; (2) Energy conversion: The upper wind roller 2 and the lower wind roller 2 rotate under the drive of the airflow, and drive the inner rotor of the generator 3 to rotate through the rotating connecting shaft, thereby converting mechanical energy into electrical energy.

[0018] Modular assembly: A single power generation module consists of a wind roller 2 connected to a shaft and 1-2 generators 3. The generator 3 is fixed to the inside of the partition 5 and the outer shell 11 through grooves, and each wind roller 2 has 1-5 blades extending into the central duct 6 area; multiple modules are arranged horizontally or in decreasing (increasing) order, and the spacing is set according to 1.2-1.5 times the diameter of the wind roller. The blades are installed at an angle of 30°-60° to the axis to form an array.

[0019] The flow guide is configured as follows: a group of flow guides 12 is arranged between every two lateral power generation modules, and the specific number of the flow guides 12 is the lateral number of power generation modules minus one, and the width of the flow guides 12 is greater than the lateral width of the two generators 3 . Scope of application

[0020] Typical application scenarios of the present invention include: Building ancillary spaces: gaps between buildings, gaps between photovoltaic panels and roofs, and vents for underground facilities; Transportation infrastructure: wind tunnel areas of viaducts, tunnels, and culverts; Natural environment: wind acceleration areas such as valleys and canyons; Movable platform: fluid power recovery system for vehicles, ships and other transportation vehicles.

[0021] The above contents are the basic principles, main features and some examples of practical application scope of the present invention. Professional and technical personnel can understand its principles. The present invention is not limited by the above examples of application scope. The above examples of application scope and the description in the specification are only to explain and supplement the principles of the present invention. Without departing from the principle and scope of the present invention, the present invention will have various changes and improvements for different application environments. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the invention is defined by the above content and the attached claims and their equivalents.

Claims

1. A wind power generation system with enhanced diversion and multi-module coordination, characterized in that: include: The outer shell, fairing and baffle together form an air passage; a guide plate is provided at the entrance, and the guide plate extends to the central duct area; the airflow of the central duct is discharged at high speed, forming a low-pressure area at the tail outlet; the airflow is divided into three paths at the central duct: The first route is discharged directly through the central duct; the second route enters the upper duct after the upper fairing pushes the wind roller in the upper power generation module array to rotate, and the rotating wind roller interacts with the airflow to generate additional thrust, and is discharged from the tail outlet of the upper duct after accelerated rotation; the third route enters the lower duct after the lower fairing pushes the wind roller in the lower power generation module array to rotate, and the rotating wind roller interacts with the airflow to generate additional thrust, and is discharged from the tail outlet of the lower duct after accelerated rotation; the power generation module includes a wind roller and 1-2 generators, the wind roller is a long cylindrical structure, and at least 6 blades are arranged on its surface along the circumferential direction, and the blades form an angle of 30°-60° with the axis; multiple power generation modules are arranged horizontally or horizontally decreasing (increasing) to form a power generation module array, and at least two upper and lower power generation module arrays are arranged in the wind passage; the guide body is arranged in the wind passage to prevent the wind roller in the power generation module from being deformed due to the excessive width of the passage, and its number is adjusted according to the array scale and the passage width.

2. The wind power generation system according to claim 1, characterized in that: The extension angle of the guide plate is adjustable to optimize airflow distribution.

3. The wind power generation system according to claim 1, characterized in that: The blade surface of the wind roller is provided with grooves or airfoil structures to enhance the aerodynamic effect.

4. The wind power generation system according to claim 1, characterized in that: The distance between the fairing and the outer shell is adjustable to adapt to different wind speed conditions.

5. The wind power generation system according to claim 1, characterized in that: The guide body is a pier-type structure, distributed between the upper and lower fairings in the central duct, and the spacing between them matches the layout of the power generation module array.

6. The wind power generation system according to claim 1, characterized in that: The wind roller is fixed inside the fairing through a bearing, and each wind roller has 1-5 blades extending into the central duct area, and the extended blades form an angle of attack of 15°-75° with the airflow in the central duct.

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