Horizontal shaft multi-barrel type wind power generation device and using method thereof

Abstract

The invention provides a horizontal-shaft multi-barrel type wind power generation device and a using method thereof.The horizontal-shaft multi-barrel type wind power generation device comprises at least one rotating shaft and a plurality of hollow barrels which are sequentially arranged in the axial direction of the rotating shaft, and a plurality of inclined ventilation holes are formed in the surface of each barrel; positive and negative pressure difference generated by the ventilation holes drives the barrel bodies to rotate around the rotating shaft, the multiple barrel bodies are arranged at intervals to achieve cascade driving of wind energy, the rotating shaft is connected with a power generator, and the power output of the power generator is adjusted through a microprocessor control system. Through the hollow barrels sequentially arranged along the rotating shaft and the vent holes obliquely formed in the barrels, the barrels are driven to rotate through the wind pressure difference, and wind energy is effectively captured. Adjacent barrel bodies are arranged at proper intervals, airflow interference is avoided, and the wind energy conversion efficiency is improved. The rotating shaft is directly connected with the permanent magnet synchronous generator, efficient mechanical energy-to-electric energy conversion is achieved, and the system stability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation equipment, and in particular to a horizontal-axis multi-barrel wind power generation device and a method for using the same. Background Art

[0002] Existing mainstream wind power generation devices mainly adopt a large-scale horizontal-axis three-blade structure. Although it has high power generation efficiency in high wind speed areas, its structure is complex, its volume is large, and it has high requirements for transportation, installation and operation and maintenance conditions, and is not suitable for scenarios where wind energy resources are distributed dispersedly, the terrain is complex or there are restrictions on the equipment size. In contrast, vertical-axis wind power generation devices have certain advantages in low wind speed startup, noise control and maintenance. However, due to insufficient blade aerodynamic performance and significant wake interference, their wind energy conversion efficiency is relatively low, which limits their large-scale promotion in practical engineering.

[0003] In recent years, in order to improve the wind energy utilization efficiency, some studies have begun to try to adopt multi-rotating unit arrangement, aerodynamic air guiding structure and modular combination strategy. However, there are still several problems in the existing technology: First, the structure of traditional horizontal-axis wind power generation devices usually relies on large-sized blades and complex yaw mechanisms, the overall structure is huge, and the manufacturing and maintenance costs are high. Especially in low wind speed or complex wind direction environments, the startup performance is poor and the wind energy utilization rate is low; Second, the wake interference effect often appears in the operation of multi-wind turbine arrays, resulting in the performance attenuation of downstream wind turbines, further affecting the overall power generation efficiency of the system; Third, the response of traditional wind turbines to wind direction changes depends on the electric control steering system or mechanical steering mechanism, which has problems such as response lag, high energy consumption and high failure rate, and is not conducive to efficient operation in areas with frequent wind direction changes; In addition, some devices also have obvious deficiencies in terms of structural integration, component versatility and maintenance convenience, which are not conducive to promotion and application in resource-limited or complex construction condition areas. Summary of the Invention

[0004] The purpose of the present invention is to provide a horizontal-axis multi-barrel wind power generation device and a method for using the same, which are structurally compact, have a low startup wind speed, high energy conversion efficiency, and can adapt to complex wind conditions, and solve the deficiencies of the existing equipment such as large volume, difficult maintenance, serious wake effect and lagging wind direction response.

[0005] According to an object of the present invention, the present invention provides a horizontal-axis multi-barrel wind power generation device, including at least one rotating shaft and a plurality of hollow barrels arranged in sequence along the axial direction of the rotating shaft. Each barrel surface is provided with a plurality of obliquely arranged ventilation holes, and the positive and negative pressure difference generated by the ventilation holes drives the barrel to rotate around the rotating shaft. The plurality of barrels are arranged at intervals to achieve cascaded drive of wind energy. The rotating shaft is connected to a generator, and the generator adjusts the power output through a microprocessor control system.

[0006] Further, a wind guide cover and a rectifying grid structure are provided at the front end of the barrel body located at the air inlet end.

[0007] Further, the surface of each barrel body is provided with 8 to 20 ventilation holes with an inclination angle of 30° to 60°, the aperture range of the ventilation holes is 30 mm to 80 mm, and the arrangement of the ventilation holes is uniformly or non-uniformly distributed.

[0008] Further, the barrel body is made of a lightweight and high-strength synthetic material or a composite material.

[0009] Further, an adjustable air guide vane is provided in each ventilation hole, and the adjustable air guide vane automatically adjusts the opening angle according to the change of the wind speed.

[0010] Further, air guide orientation vanes are provided between multiple barrel bodies, and the air guide orientation vanes achieve micro-angle deflection through elastic connection.

[0011] Further, a generator is provided at one end or both ends of the rotating shaft.

[0012] Further, ball bearings or magnetic levitation bearings are provided at both ends or the middle of the rotating shaft.

[0013] Further, the distance between the barrel bodies is 0.8 to 1.2 times the diameter of the barrel body, and a wind pressure difference enhancement structure is provided inside the barrel body. The wind pressure difference enhancement structure includes a wind guide cabin or an eccentric cavity provided on the inner side of the barrel body.

[0014] Further, the output of the generator is connected to the energy storage module after being regulated by a rectifier inverter and the microprocessor control system. The energy storage module includes a lithium battery pack and a super capacitor, and is used to output stable power.

[0015] According to another object of the present invention, the present invention provides a method for using the above horizontal axis multi-barrel wind power generation device, including the following steps: S1. The air flow enters the wind guide cover and is guided by the rectifying grid into the first barrel body; S2. Driven by the air pressure difference generated by the ventilation holes provided on the surface of the barrel body, the barrel body rotates around the rotating shaft; S3. The air flow acts on multiple barrel bodies in sequence, and gradually converts the wind energy into rotational kinetic energy; S4. The rotating shaft drives the permanent magnet synchronous generator to generate electricity, and the power output is regulated by the energy storage module.

[0016] Further, after the air flow passes through each barrel body, the air guide orientation vane rectifies the air flow, reduces the influence of the wake flow, optimizes the air flow entering the subsequent barrel body, improves the wind energy utilization rate, and adapts to the changes of different wind speeds and wind directions.

[0017] The technical solution of the present invention uses multiple hollow barrels arranged in sequence along the rotation axis and ventilation holes obliquely arranged on the barrels to drive the rotation of the barrels by the wind pressure difference, effectively capturing wind energy. An appropriate spacing is provided between adjacent barrels to avoid air flow interference and improve the wind energy conversion efficiency. The rotation axis is directly connected to a permanent magnet synchronous generator to achieve efficient conversion of mechanical energy into electrical energy, and the system has strong stability. The overall structure is compact, suitable for environments with complex wind conditions and limited space, and has the advantages of low starting wind speed, high energy conversion rate, and strong wind direction adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 is a cross-sectional view of the ventilation hole on the barrel of the embodiment of the present invention; Figure 3 is a schematic structural diagram of Embodiment 3 of the present invention; Figure 4 is a schematic structural diagram of Embodiment 4 of the present invention; Figure 5 is another schematic structural diagram of Embodiment 4 of the present invention; Figure 6 is a schematic structural diagram of Embodiment 5 of the present invention; Figure 7 is a cross-sectional view of the barrel of Embodiment 7 of the present invention; In the figure, 1, rotation axis; 2, barrel; 3, ventilation hole; 4, generator; 5, adjustable air deflector; 6, air deflector and orientation piece; 7, air deflector cover; 8, air deflector cabin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1 As Figure 1 shown, a horizontal-axis multi-barrel wind power generation device includes a rotating shaft 1 and a plurality of hollow barrels 2 arranged in sequence along the axial direction of the rotating shaft 1. Each barrel 2 is provided with a number of ventilation holes 3 arranged obliquely on its surface, and the positive and negative pressure differences formed by the ventilation holes 3 are used to drive the barrel 2 to rotate around the axis.

[0024] An appropriate spacing is reserved between adjacent barrels 2 to enable the smooth transition of air flow, avoid wake interference and energy loss, and achieve cascaded drive of wind energy. The material of the barrel 2 can be a lightweight and high-strength synthetic material or a composite material, which has both corrosion resistance and good dynamic response.

[0025] The rotating shaft 1 is connected to a generator 4. The output of the generator 4 is rectified and inverted and controlled by a microprocessor. The generator 4 is connected to an energy storage module through a microprocessor control system. The energy storage module includes a lithium battery pack and a super capacitor, and cooperates with a DC-DC converter for energy regulation to achieve stable power output. The microprocessor control system integrates a wind speed and rotation speed sensor to adjust the load of the generator 4 in real time and improve the intelligent level of the system.

[0026] The structure of the present invention is compact. It adopts a multi-barrel cascaded pressurization structure, significantly reducing the starting wind speed and improving the wind energy capture efficiency. The direct-drive permanent magnet synchronous generator 4 reduces transmission losses and improves the system stability and reliability, making it suitable for distributed energy systems with complex wind conditions and limited space.

[0027] The horizontal-axis multi-barrel wind power generation device of the present invention is a horizontal-axis multi-barrel wind power generation device with novel structure and efficient energy conversion. By arranging a plurality of barrel body 2 units with ventilation holes 3 on the rotating shaft 1, the barrel body 2 is driven to rotate by the wind pressure difference, thereby realizing the efficient multi-stage utilization of wind energy and stable power generation.

[0028] Embodiment 2 The structure of this embodiment is basically the same as that of Embodiment 1, and the difference lies in: In this embodiment, an adjustable ventilation hole 3 mechanism is provided. The ventilation hole 3 is set as an adjustable angle structure, which automatically adjusts the opening angle based on the wind speed change to achieve an adaptive response to different wind conditions and improve the starting performance at low wind speeds.

[0029] Specifically, as Figure 2 shown, an adjustable air deflector 5 is installed in the ventilation hole 3. The adjustable air deflector 5 dynamically adjusts according to the wind speed and wind direction to generate a directional pressure difference when the air flow passes through the barrel body 2. Through the combination of the adjustable air deflector 5 and the ventilation hole 3, the present invention realizes the multi-stage cascaded conversion of wind energy, improving the overall energy conversion rate and wind direction adaptability.

[0030] In this embodiment, the diameter of the ventilation hole 3 gradually decreases from the inside to the outside. From the cross-section of the ventilation hole 3, the ventilation hole 3 can be designed as a trapezoidal structure with a larger width at the upper end and a smaller width at the bottom, thereby further increasing the positive and negative pressure difference and increasing the starting torque by about 15%.

[0031] Embodiment 3 The structure of this embodiment is basically the same as that of the above embodiments, and the difference lies in: As Figure 3 shown, in this embodiment, a plurality of barrel bodies 2 are arranged coaxially, and a wind guiding and orienting piece 6 is provided between the plurality of barrel bodies 2. The wind guiding and orienting piece 6 realizes a micro-angle deflection through elastic connection to adapt to the wind speed change. The wind guiding and orienting piece 6 is fixed between adjacent barrel bodies 2 and is arranged in a fan shape or airfoil shape for rectifying the disturbed air flow, reducing the wake turbulence, and improving the energy utilization rate of the subsequent barrel body 2. Each group of wind guiding and orienting pieces 6 is fixed on the annular connection frame between two barrel bodies 2; the annular connection frame is connected to the outer shell of the barrel body 2 through bolts / snap-type slide rails, which is convenient for disassembly and replacement; the wind guiding and orienting piece 6 is connected to the annular connection frame through a small shaft + spring or a flexible connecting piece to realize a micro-angle automatic deflection. A deformable and resetting elastic piece can be designed on the back of the wind guiding and orienting piece 6 so that the wind guiding piece can automatically twist to avoid wind when the wind force is too large.

[0032] Specifically, there are three airfoil air guiding and orienting vanes 6 provided between multiple barrel bodies 2. The air guiding and orienting vanes 6 are made of glass fiber reinforced nylon material, evenly distributed, and the angles are finely adjusted to achieve air flow rectification and effectively reduce the influence of wake turbulence.

[0033] Embodiment 4 The structure of this embodiment is basically the same as that of the above embodiment, and the differences are as follows: As Figure 3 、 Figure 4 and Figure 5 shown, the horizontal rotating shaft 1 connects the rotating torques of all barrel bodies 2 through a coupling. One or both ends of the rotating shaft 1 are connected to a permanent magnet synchronous generator 4. The generator 4 is directly driven by the rotor of the rotating shaft 1 in rotation to generate electric energy output, realizing the efficient conversion of mechanical energy into electric energy.

[0034] The rotating shaft 1 is made of high-strength alloy steel or titanium alloy, and high-precision ball bearings or magnetic levitation bearings are provided at both ends and the middle to reduce running friction. The rotating torque of the entire group of barrel bodies 2 is transmitted to the permanent magnet synchronous generator 4 at one or both ends of the rotating shaft 1 through a high-strength titanium alloy hollow shaft. The rotor of the generator 4 is directly installed on the rotating shaft 1 without gear transmission.

[0035] Embodiment 5 The structure of this embodiment is basically the same as that of the above embodiment, and the differences are as follows: As Figure 6 shown, in this embodiment, an air guiding cover 7 and a rectifying grid structure are provided at the air inlet end for concentrating and evenly guiding natural wind into the area of the barrel body 2, reducing the inlet turbulence interference and adapting to the environment with frequent wind direction changes.

[0036] Specifically, a semi-closed arc-shaped air guiding cover 7 is provided at the front end of the barrel body 2 at the air inlet end. The arc-shaped air guiding cover 7 is made of corrosion-resistant anodized aluminum plate, and a rectifying grid is installed inside the arc-shaped air guiding cover 7 to ensure the uniformity of air flow.

[0037] To adapt to complex wind directions, the air guiding cover 7 is equipped with a wind direction adjusting mechanism, which can adjust the orientation of the air guiding cover 7 according to the wind direction change, and the air guiding cover 7 can be automatically rotated by ±15° according to the wind direction to maintain the best air guiding angle.

[0038] The barrel body 2 can be finely adjusted in inclination by ±10° to form a spiral arrangement, improving the utilization rate and rotation efficiency of the overall air flow.

[0039] Embodiment 6 The structure of this embodiment is basically the same as that of the above embodiment, and the differences are as follows: In the above embodiments, the barrel body 2 can be designed to have a hollow cylindrical structure, and a number of inclined ventilation holes 3 are uniformly or non-uniformly formed on the shell of each barrel body 2. The number of ventilation holes 3 is 8 to 20 for each barrel body 2, the aperture range of the ventilation holes 3 is 30 mm to 80 mm, and the inclination angle of the ventilation holes 3 is 30° to 60°.

[0040] Specifically, in this embodiment, six hollow barrel bodies 2 are arranged at equal intervals along the axis of the horizontal rotating shaft 1. Each barrel body 2 is made of carbon fiber reinforced composite material. The outer diameter of the barrel body 2 is 1 meter and the length is 1.2 meters. 10 to 15 ventilation holes 3 with a diameter of 60 mm and an inclination angle of about 45° are arranged on the surface of the barrel body 2, and an ABS + carbon fiber composite air guiding vane is installed in each hole, which can automatically open and close the angle according to the wind speed change to adjust the air flow rate.

[0041] Embodiment 7 The structure of this embodiment is basically the same as that of the above embodiments, and the difference lies in: As Figure 7 shown, in this embodiment, a wind pressure difference enhancement structure is provided inside the barrel body 2. A wind guiding chamber 8 or an eccentric chamber can be arranged on the inner side of the outer shell of the barrel body 2 to enhance the velocity difference of the air flow inside the barrel, thereby increasing the rotational torque.

[0042] Embodiment 8 This embodiment provides a method for using the above horizontal axis multi-barrel wind power generation device. When the device is operating, when natural wind passes through the first barrel body 2, local negative pressure and positive pressure areas are generated in its ventilation holes 3 to form a rotational driving force; then the air flow continues to pass through the second, third, and even more barrel bodies 2, and the wind energy is gradually converted into rotational kinetic energy, and finally the generator 4 is driven by the rotating shaft 1 to generate electricity; this process realizes the continuous capture and multi-stage conversion of wind energy, and has advantages such as lower starting wind speed, higher energy conversion rate, and stronger wind direction adaptability compared with traditional blade-type wind turbines.

[0043] Specifically, it includes the following steps: Receive natural air flow, and centrally and uniformly guide the air flow into the first-stage barrel body 2 through the arc-shaped air guiding cover 7 and the rectifying grid; Utilize the air pressure difference generated by the ventilation holes 3 on the surface of the barrel body 2 to drive the barrel body 2 to rotate around the rotating shaft 1 to form mechanical power; Multiple barrel bodies 2 cascade-convert wind energy to form stable rotation of the rotating shaft 1; use the air guiding and orienting vanes 6 to rectify the air flow after passing through the previous-stage barrel body 2, and automatically adjust the angle of the air guiding vanes according to the real-time wind speed to optimize the air flow guidance and improve the wind energy utilization rate of the subsequent-stage barrel body 2; The rotating shaft 1 drives the permanent magnet synchronous generator 4 to generate electricity, and the electric energy is output as stable power after being regulated by the rectifier-inverter and energy storage system.

[0044] The present invention solves the deficiencies of the existing equipment, such as large volume, difficult maintenance, serious wake effect, and lag in wind direction response. By adopting a multi-barrel cascade structure, the ventilation holes 3 induce a pressure difference to drive rotation, and through multi-stage rectification of the air guide vanes to optimize the air flow, low starting wind speed, high energy conversion rate, and strong wind direction adaptability are achieved.

[0045] Example 9 The overall structure and layout of the above horizontal-axis multi-barrel wind power generation device are described in detail as follows: I. Composition of the main structure Rotating shaft 1: Horizontally arranged, bearing all barrel units 2 and transmitting torque to the generator 4; Barrel unit 2: Comprising a plurality of barrels 2 with a hollow cylindrical structure, and the plurality of barrels 2 are arranged uniformly or regularly along the axial direction of the rotating shaft 1; Ventilation hole 3 structure: Opened on the surface of the barrel 2 shell to form a wind pressure difference to provide the rotating torque of the barrel 2; Air guide device: Arranged at the front end of the entire device and the gap between the barrels 2 for rectification and guiding; Power generation system: A permanent magnet synchronous generator 4 can be adopted, connected to the rotating shaft 1, and equipped with an energy storage unit; Support structure: The frame or column supporting both ends of the rotating shaft 1, with wind resistance stability.

[0046] II. Technical details and material selection of each component 2.1 Rotating shaft 1 Material: High-strength hollow carbon steel / aluminum alloy or carbon fiber tube, taking into account light weight and torsional stiffness; Structural dimensions: Determined according to the number and diameter of the barrels 2, generally with an outer diameter of 30 - 100 mm; Connection method: The barrel 2 and the rotating shaft 1 are connected by a sleeve connection + pin fixing, or a keyway structure to ensure torque transmission.

[0047] 2.2 Barrel unit 2 Shape: Hollow cylinder or ellipsoid cylinder, with a length of 300 - 800 mm and a diameter of 200 - 600 mm; Material: Use glass fiber reinforced plastic (GFRP), carbon fiber composite material (CFRP), or engineering plastic ABS / PC alloy material, with the characteristics of light weight, high strength, corrosion resistance, and low moment of inertia; Arrangement method: The barrels 2 can be arranged coaxially, or the inclination angle can be finely adjusted (±10°) to form a spiral distribution to improve the overall air flow utilization rate.

[0048] 2.3 Ventilation hole 3 structure Hole opening method: There are 8 to 20 ventilation holes 3 evenly / unevenly distributed on each barrel body 2; the aperture of the ventilation holes 3 is recommended to be 30 to 80 mm, which is set according to the size of the barrel body 2 and the wind speed. Design of the hole angle of the ventilation hole 3: The hole position of the ventilation hole 3 forms an inclined angle (30° to 60°) with the tangential direction of the barrel body 2 to guide the air flow to generate a torque for rotating around the barrel.

[0049] Adjustable guide vane: Each ventilation hole 3 is provided with an adjustable guide vane, and the adjustable guide vane can be a micro adjustable wind rudder vane. For example, MEMS electric control or a wind pressure sensing piece is adopted to automatically adjust the opening direction and size to improve the wind energy responsiveness.

[0050] 2.4 Air guide and rectifying device Air guide hood 7: A semi-closed arc-shaped air guide hood is arranged on the air inlet side to focus the incoming wind and introduce it into the ventilation hole 3 area of the barrel body 2 to reduce eddy currents. Rectifying grid: The rectifying grid can be installed between the barrel bodies 2 to reduce air flow disturbance and ensure uniform force on the subsequent barrel bodies 2.

[0051] 2.5 Wind pressure difference enhancement structure Internal air guide cabin 8 / eccentric cavity design: A bias or symmetric sandwich structure is formed in the inner cavity of the barrel body 2 to guide part of the air flow to accelerate and flow around the barrel, enhancing the torque for rotation; simulation shows that properly arranging the ventilation holes 3 eccentrically can form a stronger negative pressure area and improve the starting ability.

[0052] 2.6 Power generation and energy storage system Type of generator 4: A permanent magnet synchronous generator 4 (PMSG) is adopted, which has a small starting torque and high efficiency. Installation position: It is arranged at one end of the rotating shaft 1 or symmetrically installed at both ends to reduce the axial force imbalance. Energy storage method: An integrated lithium battery pack or a super capacitor is used, and stable electrical energy output is carried out through a DC-DC converter. Control system: Microprocessor + wind speed sensor + speed feedback control are used to achieve intelligent operation, status monitoring and output adjustment.

[0053] III. Differential multi-barrel arrangement 3.1 Functional grading design of the barrel body 2 Table 1 Functional characteristic table of the graded barrel body 2

[0054] 3.2 Design of the distance between barrels The spacing is 0.8 - 1.2 times the diameter of the barrel body 2 to avoid air flow interference; micro air guiding and orientation vanes 6 can be arranged between the barrel bodies 2 to improve the air receiving efficiency at the rear. The air guiding and orientation vanes 6 are arranged between two adjacent barrel bodies 2, mainly used to guide the smooth transition of the air flow, reduce the wake interference; rectify the turbulent flow, improve the wind energy utilization rate of the subsequent barrel body 2; provide micro guiding ability under complex wind conditions (such as variable wind direction, gust); slightly adjust the tangential angle of the wind entering the barrel body 2 to enhance the rotation effect.

[0055] 3.3 Structural form of the air guiding and orientation vane 6 Table 2 Advantageous characteristics table of the air guiding and orientation vane 6 type

[0056] 3.4 Arrangement method of the air guiding and orientation vane 6 Circular arrangement: Each group of air guiding and orientation vanes 6 is arranged along the circumference of the outer edge of the barrel body 2, shaped like a "wind rose", with the number of 6 - 12 pieces / group; Inner air guiding structure: The air guiding and orientation vanes 6 are located inside between the barrel bodies 2, distributed close to the axial line, used to protect the streamline in the rotation axis 1 area; Staggered arrangement: Two layers of air guiding and orientation vanes 6 are arranged between two barrel bodies 2, with the angles arranged staggeredly to further improve the air flow rectification ability.

[0057] 3.5 Geometric parameters of the air guiding and orientation vane 6 Table 3 Geometric parameters of the air guiding and orientation vane 6

[0058] 3.6 Material selection suggestions Table 4 Comparison of air guiding and orientation vane 6 material selection

[0059] 3.7 Installation method of the air guiding and orientation vane 6 Each group of air guiding and orientation vanes 6 is fixed on the annular connection frame between two barrel bodies 2; the annular connection frame is connected to the outer shell of the barrel body 2 through bolts / snap - type slide rails, which is convenient for disassembly and replacement; the air guiding and orientation vanes 6 are connected to the annular connection frame through a small shaft + spring or a flexible connection piece to achieve micro - angle automatic deflection.

[0060] 3.8 Adjustable structure scheme of the air guiding and orientation vane 6 A deformable and resetting elastic piece can be designed on the back of the air guiding and orientation vane 6, so that the air guiding vane can automatically twist to avoid wind when the wind force is too large; wind speed - sensitive adjustment can be achieved by combining a piezoelectric regulator or a temperature - controlled material (for experimental high - end designs); a cam structure can also be introduced to link and adjust the inclination angles of all blades for optimizing specific wind condition scenarios.

[0061] 3.9 Function of the air guiding and orientation vane 6 When the present invention is in use, the air guiding and directing vane 6 has the following functions: 1. After the incoming wind enters the front-stage barrel body 2, the air flow still has strong kinetic energy; 2. The air flow passes through the air guiding and directing vane 6 structure between the barrels and is moderately guided to deflect tangentially; 3. After changing the air flow angle, it enters the ventilation hole 3 area of the next-stage barrel body 2; 4. Improve the positive pressure area of the "pressure receiving surface" and the negative pressure difference of the "drainage surface" of the ventilation hole 3 of the rear-stage barrel body 2; 5. The overall effect is to increase the rotational torque of the barrel body 2 and enhance the pneumatic coupling efficiency of the system; 6. It simultaneously has the dual functions of "turbulent flow blocking" and "guiding and efficiency improvement".

[0062] The adjustable structure can cope with complex terrains or areas with frequent wind changes, enhancing the versatility of the device; the elastic deflection or automatic guiding function provides the "wind vane-like" ability with high intelligent potential; the multi-layer staggered arrangement can effectively avoid the efficiency reduction caused by the "wind shadow effect"; the modular design is convenient for maintenance, replacement and future system upgrade.

[0063] IV. Working principle of the device of the present invention When the present invention is in use, it includes the following steps: S1. The wind flow enters the air guiding cover 7 and is centrally guided to the first barrel body 2.

[0064] S2. The ventilation hole 3 guides the air flow to generate a pressure difference around the barrel, forming a rotational driving torque.

[0065] S3. The barrel body 2 rotates around the horizontal axis, driving the rotating shaft 1 to rotate synchronously.

[0066] S4. The continuous wind flow acts on the subsequent barrel bodies 2 in sequence, realizing the cascaded driving and energy accumulation of wind energy.

[0067] S5. Finally, the rotating shaft 1 drives the generator 4 to generate electricity stably, and at the same time, the energy storage system adjusts the output to meet the load requirements.

[0068] The horizontal-axis multi-barrel wind power generation device proposed by the present invention has the core concept that: through a plurality of hollow barrel body 2 units arranged along the horizontal rotating shaft 1, a directional air flow channel is formed under the action of natural wind, and the positive and negative pressure differences caused by the ventilation hole 3 are used to drive the barrel body 2 to rotate around the axis, thereby driving the rotating shaft 1 to drive the generator 4 to output electric energy.

[0069] Specifically, its working principle includes the following aspects: 4.1 Introduction and rectification and guidance of wind energy An arc-shaped air guiding cover 7 or a grid-type rectification structure is provided at the head end of the system, and its main functions include: Airflow concentration: Collect and guide the natural wind to focus on the area of the barrel body 2, improving the entry efficiency; Turbulence attenuation: Eliminate the turbulent disturbances caused by buildings, terrain or wind shear; Flow velocity equilibrium: Make the wind speed distribution as uniform as possible on the windward side of the barrel body 2, enhancing the overall force balance and rotational stability of the system; Wind direction adaptation: A wind direction swing mechanism can be optionally configured on the arc-shaped cover or the guiding structure, suitable for variable wind direction environments (such as by the sea, in the mountains, and in urban wind corridors).

[0070] The guiding wind cover 7 can be composed of ultraviolet-resistant and corrosion-resistant polycarbonate (PC) board, fiberglass-reinforced plastic (FRP) or anodized aluminum board.

[0071] 4.2 Force and rotation process of the barrel body 2 unit Multiple barrel bodies 2 are arranged at equal intervals on the rotating shaft 1. Each barrel body 2 is a hollow cylindrical structure. The structural details of the barrel body 2 are as follows: The barrel body 2 is made of lightweight and high-strength materials (such as carbon fiber-reinforced composite materials, honeycomb aluminum structural plastic composite materials, etc.), taking into account wind pressure resistance, fatigue resistance and low rotational inertia; A number of inclined ventilation holes 3 (the aperture range is generally 5% - 15% of the barrel diameter) are asymmetrically arranged on the surface of the barrel body 2, and the inclination angle is set at 10° - 45°, and the specific angle is adjusted according to the local average wind speed and wind direction; An adjustable wind guiding vane is provided at each ventilation hole 3, which is made of a flexible wind pressure-resistant material (such as ABS plastic + carbon fiber sheet), and can automatically open the angle to increase ventilation when the wind speed is low, and automatically contract to avoid overcurrent when the wind speed is high, similar to the windward adjustment behavior of a "bird wing"; Due to the air pressure difference inside and outside the barrel body 2 generated by the ventilation holes 3, local areas on the surface of the barrel body 2 are subjected to unbalanced forces, and then a driving torque around the rotating shaft 1 is generated, driving the barrel body 2 to rotate self - clockwise.

[0072] The resultant torque generated by each barrel body 2 will be transmitted to the main rotating shaft 1 through a coupling or a bracket structure, thereby driving the entire rotating shaft 1 to rotate stably.

[0073] 4.3 Wind guiding coordination and energy cascade between barrel bodies 2 To avoid the wake disturbance formed after the rotation of the previous - stage barrel body 2 from affecting the efficiency of the next - stage barrel, a wind guiding and directional vane 6 structure is set between two barrel bodies 2. Its structure and functions are as follows: The wind guiding and directional vane 6 is installed between the barrel bodies 2 and around the rotating shaft 1, showing a fan - shaped or airfoil layout; The wind guiding and directional vane 6 is made of glass fiber - reinforced nylon, aviation - grade aluminum alloy or recyclable carbon - plastic composite material; The wind guiding and directional vanes 6 are evenly distributed in a 360° circle around the rotating shaft 1, with 3 - 6 vanes in each group; Function of the air guiding and directing vane 6: 1. Rectify the air flow after passing through the previous-stage barrel body 2 to make its direction and speed more suitable for the energy absorption of the next-stage barrel body 2; 2. Appropriately constrict the air duct after the air flow speed drops to increase the wind pressure; 3. Reduce the turbulence at the tail of the air flow to avoid the influence of "turbulence interference" on the rotation efficiency of the subsequent stage; 4. If an active angle adjustment mechanism is added, the angle of the air guiding vane can be controlled according to the real-time wind conditions to achieve efficient air flow guiding and energy utilization. Since a structure similar to a "cascaded supercharging wind tunnel" is formed between each barrel body 2, the wind energy can be continuously reused twice or three times, greatly improving the wind capture efficiency per unit area.

[0074] 4.4 Rotation shaft 1 drive and generator 4 system The self-rotation driving force formed by multiple barrel bodies 2 is finally converged and transmitted to the rotation shaft 1 through the fixed brackets or couplings connected to the rotation shaft 1. The key design points of the rotation shaft 1 are as follows: The rotation shaft 1 is made of high-strength alloy steel, carbon steel nickel-plated, or titanium alloy hollow shaft, taking into account both weight and torque transmission; Bearings are provided at both ends and the middle section of the rotation shaft 1, such as high-precision ball bearings or magnetic levitation bearings, to reduce friction and improve the operating life; A direct-drive permanent magnet synchronous generator 4 is provided at one end or both ends of the rotation shaft 1. The stator of the generator 4 is fixed to the base, and the rotor is directly driven by the rotation shaft 1 without a gear transmission system, improving efficiency and reliability; Principle of the generator 4 system: During the rotation of the permanent magnet synchronous generator 4, the magnetic poles on the rotor pass through the stator winding to generate an induced voltage; this voltage is converted into direct current through a rectifier circuit and then output as alternating current through an inverter to supply external electrical loads or enter an energy storage device.

[0075] The power generation amount is jointly determined by the rotation speed of the rotation shaft 1 and the motor electromotive force constant. An MPPT control system is provided in the electrical system to achieve maximum power point tracking.

[0076] 4.5 Electrical energy output and energy storage system The power generation end and the energy storage end form a micro electrical energy management system, including: Rectification and inversion module: Control the current output method, and the direct current output or standard AC 220V, AC 380V output can be selected; Energy storage module: Includes lithium iron phosphate batteries and supercapacitor systems, suitable for medium and short-term energy storage and stable and smooth output; According to different application scenarios (independent power supply, microgrid access, grid-connected power generation, etc.), corresponding energy management strategies can be configured.

[0077] 4.6 Summary of the whole process of wind energy conversion Table 5 Summary of wind energy conversion process

[0078] First, the present invention adopts a structure of multiple hollow rotating barrels 2 arranged horizontally, and inclined ventilation holes 3 are provided on the side walls of the barrels 2. After the air flow enters the interior of the barrels 2, a significant pressure difference distribution is formed on both sides of the barrels 2, thereby generating a stable driving torque to achieve bladeless rotational power generation. This positive and negative pressure difference driving method is different from the problem of the relatively high wind speed starting threshold of traditional blade-type wind turbines, and can achieve smooth start under low wind speed conditions (the starting wind speed can be as low as 2.5 m / s), significantly improving the wind energy utilization range.

[0079] Secondly, the barrels 2 are made of lightweight and high-strength composite materials, and the wind energy driving inertia per unit volume is small. Combined with the non-steering structure design, it can effectively adapt to different wind directions (including variable wind directions) scenarios and has good omnidirectional wind direction response ability. Simulation analysis shows that under the condition of arbitrary 360° wind direction change, the average response delay of the system is less than 2 seconds, which is significantly lower than the response delay of traditional yaw blade wind turbines (usually 5 - 8 seconds), and is especially suitable for areas with frequent wind direction changes (such as islands, valleys, and urban fringe areas).

[0080] Thirdly, the device of the present invention forms a modular networking power generation structure through the series arrangement of multiple barrel 2 units. The aerodynamic interference between adjacent barrels 2 is small, and the wake effect is significantly weaker than that of traditional wind turbine devices. The wind tunnel experiment simulation data shows that under the optimal spacing condition (3 times the diameter of the barrel 2) between adjacent barrels 2, the wind speed attenuation amplitude in the wake area of the system is less than 8%, while the wind speed attenuation amplitude in the wake area of conventional wind turbines is generally above 15%, verifying that the structure of the present invention has better array arrangement compatibility and energy utilization synergy.

[0081] In addition, the structure of the present invention is compact. The overall system does not rely on complex precision mechanical structures such as yaw, pitch, and hub, and has low operation and maintenance difficulty. The annual average maintenance cost of the system can be reduced by about 30% or more. At the same time, due to the absence of large high-speed rotating blades, it has higher operation safety and lower noise level (operation noise ≤ 45 dB), and is more suitable for low-interference application scenarios such as near residential areas or ecological protection areas.

[0082] The horizontal-axis multi-barrel wind power generation device proposed by the present invention realizes an efficient, stable, and low-cost wind energy power generation system by cleverly utilizing the pressure difference driving principle caused by the ventilation holes 3, combined with means such as multi-barrel cascade, flow guiding and rectifying, adjustable structure, and modular design. It is especially suitable for application scenarios with complex wind conditions, limited space, or distributed energy, and has broad application prospects and industrialization value.

[0083] In summary, the present invention realizes driving the barrel 2 to rotate around the horizontal axis by using the positive and negative pressure difference to form a stable rotation power source, so as to drive the generator 4 to work, by arranging a plurality of hollow barrel 2 units arranged along the axis and combining the internal inclined ventilation hole 3 structure and the wind guiding device; its innovative structure not only simplifies the system structure, improves the starting sensitivity and the adaptability to different wind directions, but also reduces the maintenance difficulty and cost through modular design, and at the same time has good expandability in side-by-side arrangement, effectively suppressing the influence of wake interference, realizing efficient wind energy capture and multi-stage energy utilization under medium and low wind speed conditions, improving the overall power generation performance and adaptability of the system, and solving the above key technical problems existing in the prior art.

[0084] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A horizontal-axis multi-barrel wind power generation device, characterized in that, It includes at least one rotating shaft and a plurality of hollow barrels arranged axially in sequence along the rotating shaft. A number of inclined ventilation holes are provided on the surface of each barrel. The positive and negative pressure difference generated by the ventilation holes drives the barrel to rotate self - rotatably around the rotating shaft. The plurality of barrels are arranged at intervals to achieve cascaded drive of wind energy. The rotating shaft is connected to a generator, and the generator adjusts the power output through a micro - processor control system.

2. The horizontal-axis multi-barrel wind power generation device according to claim 1, characterized in that, A wind guide hood and a rectifying grid structure are provided at the front end of the barrel located at the air inlet end.

3. The horizontal axis multi-barrel wind power generation device according to claim 1, characterized in that, There are 8 to 20 ventilation holes with an inclination angle of 30° to 60° on the surface of each barrel. The aperture range of the ventilation holes is 30 mm to 80 mm, and the arrangement of the ventilation holes is evenly or unevenly distributed.

4. The horizontal-axis multi-barrel wind power generation device according to claim 1, characterized in that An adjustable air deflector is provided in each ventilation hole, and the adjustable air deflector automatically adjusts the opening angle according to the change of wind speed.

5. The horizontal-axis multi-barrel wind power generation device according to claim 1, characterized in that, There are air - guiding and orienting vanes between the plurality of barrels, and the air - guiding and orienting vanes achieve micro - angle deflection through elastic connection.

6. The horizontal-axis multi-barrel wind power generation device according to claim 1, characterized in that The generator is provided at one end or both ends of the rotating shaft.

7. The horizontal-axis multi-barrel wind power generation device according to claim 1, wherein, Ball bearings or magnetic levitation bearings are provided at both ends or the middle of the rotating shaft.

8. The horizontal-axis multi-barrel wind power generation device according to claim 1, wherein The distance between the barrels is 0.8 to 1.2 times the diameter of the barrel, and a wind pressure difference enhancement structure is provided inside the barrel. The wind pressure difference enhancement structure includes a wind - guiding chamber or an eccentric chamber provided on the inner side of the barrel.

9. The horizontal axis multi-barrel wind power generation device according to claim 1, wherein The output of the generator is connected to an energy storage module after being adjusted by a rectifier - inverter and the micro - processor control system. The energy storage module includes a lithium - battery pack and a supercapacitor, and is used to output stable power.

10. The horizontal axis multi-barrel wind power generation device according to any one of claims 1-9, characterized in that, According to another object of the present invention, the present invention provides a usage method of the above - mentioned horizontal - axis multi - barrel wind power generation device, including the following steps: S1. The air flow enters the first barrel. S2. The air pressure difference generated by the ventilation holes provided on the barrel surface drives the barrel to rotate self - rotatably around the rotating shaft. S3. The air flow acts on a plurality of barrels in sequence, and gradually converts wind energy into rotational kinetic energy. S4. The rotating shaft drives a permanent - magnet synchronous generator to generate electricity, and the power output is adjusted through a micro - processor control system.

Images