Vertical shaft barrel type wind power generation device

Abstract

The invention relates to the technical field of wind power generation, in particular to a vertical shaft barrel type wind power generation device. Comprising a generator, an input shaft of the generator is connected with a rotating shaft, a plurality of barrels of hollow structures are arranged outside the rotating shaft in the height direction, a plurality of ventilation holes penetrate through the side walls of the barrels, the barrels are fixed to the rotating shaft, and the rotating shaft is located on the central axis of the barrels; and the generator is connected with the support frame. The ventilation holes are formed in the side wall of the barrel body of the hollow structure, when external air flow acts on the barrel body, air enters the barrel body or flows out of the barrel body through the ventilation holes, so that pressure difference is formed inside and outside the barrel body, rotating driving force is generated, the driving force enables the barrel body to drive the rotating shaft to rotate, and then the generator is driven to output electric energy; the device has the advantages of simple structure, low manufacturing cost, high adaptability and the like; and the designed barrel body structure has a relatively low starting wind speed requirement due to a relatively large wind receiving area and an internal pressure difference mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a vertical axis barrel type wind power generation device. Background Art

[0002] With the rapid development of renewable energy, wind power generation, as a clean and efficient way of energy conversion, has been widely used in distributed energy systems in cities, rural areas and remote areas. Traditional wind power generation devices mostly use horizontal axis wind turbines, which have large blades, high requirements on wind direction, high installation and maintenance costs, and are not suitable for places where wind direction changes frequently or space is limited. In contrast, vertical axis wind power generation devices have the advantages of being independent of wind direction, compact structure, high safety, and strong adaptability. They are suitable for a variety of scenarios such as roofs, road edges, islands and reefs, and deserts. Common structures of existing vertical axis wind turbines include Savonius type and Darrieus type. Although they have certain self-starting capabilities and operating efficiency, there is still room for improvement in starting sensitivity, energy conversion efficiency and structural adaptability in low wind speed areas. Existing vertical axis wind turbines mainly have the following disadvantages:

[0003] 1. Poor starting performance and low wind energy utilization: Common vertical axis wind turbines are difficult to start under low wind speed or variable wind direction conditions, and the rotational torque is insufficient, resulting in low wind energy utilization, which limits their application in areas with unstable wind speeds.

[0004] 2. Unreasonable aerodynamic design: Traditional barrel-type or blade-type structures fail to fully optimize the wind flow path, fail to form an effective fluid induction structure, and make it difficult to achieve sustained and efficient aerodynamic thrust output.

[0005] 3. Structural vibration and yaw problems: Unreasonable or asymmetric blade arrangement can easily cause vibration and deviation during rotation, affecting the stability of the device and long-term operational reliability.

[0006] The present invention is proposed in view of the above technical deficiencies. Summary of the Invention

[0007] The purpose of the present invention is to provide a vertical axis barrel type wind power generation device, which can realize wind energy driven rotation without a complex blade structure and efficiently convert it into electrical energy, with a compact structure, sensitive start-up and efficient operation.

[0008] The present invention provides a vertical axis barrel-type wind power generation device, including a generator, the input shaft of the generator is connected to a rotating shaft arranged in a vertical direction, a plurality of hollow barrel bodies are provided on the outside of the rotating shaft along the height direction, a plurality of ventilation holes are penetrated through the side wall of the barrel body, the barrel body is fixedly connected to the rotating shaft, and the rotating shaft is located on the central axis of the barrel body; and a support frame is also included, and the generator is connected to the support frame.

[0009] Furthermore, the shape of the ventilation hole is one or more of circular, elliptical or elongated.

[0010] Furthermore, the ventilation holes are arranged at an angle, and the ventilation holes are inclined by 15-45 degrees relative to the radial direction of the barrel body.

[0011] Furthermore, the plurality of ventilation holes are arranged on the side wall of the barrel body in one or more of the following ways: circumferentially symmetrical arrangement, asymmetrically offset arrangement, longitudinally spiral arrangement, and strip area concentrated arrangement.

[0012] Furthermore, the top end of the barrel body is an open end, and a plurality of connecting pieces are provided inside the barrel body along the axial direction, and the connecting pieces are fixedly connected to the rotating shaft.

[0013] Furthermore, the connecting member includes a fixing ring, which is fixedly connected to the rotating shaft. A plurality of connecting rods are provided on the outer peripheral wall of the fixing ring, and the connecting rods are fixedly connected to the inner wall of the barrel body.

[0014] Furthermore, a guide plate is provided on the inner wall of the ventilation hole.

[0015] Furthermore, a barrel body is provided outside the rotating shaft along the height direction, and an air guide cover is provided above the barrel body.

[0016] Furthermore, the air guide cover is conical in shape.

[0017] Furthermore, a flexible thin-film photovoltaic component is provided on the outer surface of the air guide cover; and the material of the air guide cover is a non-light-transmitting material.

[0018] In summary, the present invention has the following advantages:

[0019] The technical solution of the present invention is to set ventilation holes on the side wall of the barrel body with a hollow structure. When the external wind flow acts on the barrel body, the air enters the barrel body or flows out of the barrel body through the ventilation holes, thereby forming a pressure difference between the inside and outside of the barrel body, generating a rotational driving force. This driving force causes the barrel body to drive the rotating shaft to rotate, thereby driving the generator to realize electrical energy output.

[0020] The wind power generation device provided by the present invention is provided with a hollow barrel body and reasonably arranged ventilation holes, which can realize wind energy-driven rotation without a complex blade structure, and efficiently convert it into electrical energy through a rotating shaft. It has the advantages of simple structure, low manufacturing cost, and strong adaptability. The designed barrel body structure has a lower starting wind speed requirement due to its large wind-receiving area and internal pressure difference mechanism, and is more suitable for areas with frequent wind speed fluctuations or medium and low density of wind energy resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a single-barrel wind power generation device in Example 1 of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a wind power generation device using another type of support frame in Example 1 of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a double-barrel wind power generation device in Example 1 of the present invention;

[0025] Figure 4 This is a schematic structural diagram of a three-barrel wind power generation device in Example 1 of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the connection between the barrel and the rotating shaft in Example 1 of the present invention;

[0027] Figure 6 This is a schematic diagram of the barrel structure with elliptical ventilation holes in Example 1 of the present invention;

[0028] Figure 7 This is a schematic diagram of the barrel structure in which the ventilation holes are long strips in Example 1 of the present invention;

[0029] Figure 8 This is a schematic diagram of the barrel structure with symmetrical circumferential arrangement of ventilation holes in Example 2 of the present invention;

[0030] Figure 9 This is a schematic diagram of the barrel structure with ventilation holes arranged in a longitudinal spiral in Example 2 of the present invention;

[0031] Figure 10 This is a schematic diagram of the barrel structure in which the ventilation holes are concentratedly arranged along the annular strip area in Example 2 of the present invention;

[0032] Figure 11 This is a cross-sectional view of the barrel body with symmetrical circumferential arrangement of ventilation holes in Example 2 of the present invention;

[0033] Figure 12 Schematic diagram of the structure of a wind power generation device in Example 3 of the present invention;

[0034] Figure 13 This is a top view of the guide cover with rudder blades in Example 3 of the present invention.

[0035] Explanation of the reference numerals: 1-barrel body; 101-ventilation hole; 1011-guide vane; 102-fixing ring; 103-connecting rod; 2-generator; 3-rotating shaft; 4-support frame; 401-support plate; 402-support rod; 5-air guide cover; 501-rudder blade. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the 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 the specific circumstances.

[0039] Example 1

[0040] A vertical axis barrel type wind power generation device, such as Figure 1 and Figure 2 As shown, it includes a barrel body 1 with a hollow structure, and a plurality of ventilation holes 101 are provided on the side wall of the barrel body 1; a generator 2 is provided under the barrel body 1, and the input shaft of the generator 2 is connected to a rotating shaft 3 set in a vertical direction, and the rotating shaft 3 is fixedly connected to the barrel body 1, and the rotating shaft 3 is located on the central axis of the barrel body 1.

[0041] A plurality of barrels can also be arranged outside the rotating shaft 3 along the height direction, such as Figure 3 The double barrel and Figure 4 The three-barrel body is set in the middle.

[0042] The shape of the ventilation hole 101 is circular, oval (such as Figure 6 as shown) or long strips (as Figure 7 As shown), a combination of various shapes can also be used as needed. The size of the ventilation hole 101 is 3-15cm to ensure the introduction of a moderate amount of airflow. The distribution of the ventilation holes 101: multiple rows are arranged at equal intervals along the circumference of the barrel body 1, preferably 3-6 rows, and each row is longitudinally spaced 0.2-0.4m. The ventilation holes 101 are set at an angle, that is, the center of the ventilation hole 101 close to the outside of the barrel body 1 and the center of the circle close to the inside of the barrel body 1 are not on the same straight line, and the inclination angle is 15-45° relative to the radial direction of the barrel body 1, so that the incoming airflow forms a biased thrust. The edges of the ventilation holes 101 are wrapped with rubber or polyurethane to reduce wind dryness and wear.

[0043] Structural design and principle analysis of ventilation hole 101

[0044] 1. The circular hole has symmetrical and stable flow field characteristics in fluid mechanics. When the wind flows vertically or obliquely into the circular hole, local jet flows can be formed inside and outside, thereby generating dynamic pressure difference and induced vortex on both sides of the barrel, driving the barrel to rotate.

[0045] Advantages: easy to manufacture, suitable for stamping / laser cutting; small stress concentration on the edge, not easy for cracks to propagate; high tolerance to airflow direction, strong resistance to wind direction changes.

[0046] Disadvantages: The ventilation efficiency is medium, and the air volume per unit hole area is not large; the air flow deflection ability is weak, and it is difficult to guide strong tangential thrust.

[0047] Applicable scenarios: Suitable for areas with medium to low wind speeds and frequent wind direction fluctuations, where stability is a priority.

[0048] 2. Due to the large windward area in the long axis direction and the concentrated exhaust direction of the elliptical hole, an elongated flow field structure can be formed, which produces a stronger pressure difference area and directional airflow, thereby enhancing the tangential thrust and rotational torque.

[0049] Advantages: The aerodynamic thrust in the direction of rotation can be enhanced by adjusting the direction of the long axis; a stronger stable vortex can be formed to enhance the initial starting force of rotation; changing the hole inclination angle can optimize the fluid deflection path.

[0050] Disadvantages: The processing is relatively complicated; if the long axis is not arranged properly, it may cause vibration or yaw of the barrel.

[0051] Applicable scenarios: Suitable for scenarios with stable wind speed and high power generation efficiency requirements, such as seaside and plateau wind outlets.

[0052] 3. The long strip holes can form a high-throughput, highly directional wind channel on the surface of the barrel. By controlling the direction and opening of the holes, a large amount of airflow can penetrate the barrel in a certain direction, forming a strong directional shear flow, which significantly increases the rotational driving force.

[0053] Advantages: It can significantly enhance the aerodynamic effect per unit area of a single hole; the airflow shearing effect is stronger and the rotational torque is large; it can be combined with the guide vane to form a jet effect.

[0054] Disadvantages: High requirements for structural integrity, need to strengthen peripheral support; easy to produce structural imbalance, need precise symmetrical design.

[0055] Applicable scenarios: Suitable for use in systems with high wind speeds or large barrel sizes, pursuing maximum output power.

[0056] The top of the barrel body 1 is an open end (it can also be designed that both the top and the bottom are open ends), the rotating shaft 3 passes through the bottom wall of the barrel body 1 and is connected to the generator 2, and a number of connecting parts are provided inside the barrel body 1 along the axial direction (the number of connecting parts can be designed according to the specific height of the barrel body 1); Figure 5 As shown, the connecting part includes a fixed ring 102, which is fixedly connected to the rotating shaft 3. A plurality of connecting rods 103 are provided on the outer peripheral wall of the fixed ring 102. The plurality of connecting rods 103 are evenly distributed along the fixed ring 102, and the other end of the connecting rod 103 is fixedly connected to the inner wall of the barrel body 1. The barrel body 1 can be designed to be cylindrical or drum-shaped, and the material can be aluminum alloy or FRP (glass fiber reinforced plastic). The structural parameters can be designed according to the wind speed and power generation requirements. The recommended dimensions are as follows: height of 1.0-3.0m, diameter of 0.8-2.0m, and wall thickness of 2-20mm. Reinforcement ribs or an inner frame can also be provided inside the barrel body 1 to improve the overall rigidity and deformation resistance. In order to reduce the weight, a honeycomb structure reinforcement rib plate can be used.

[0057] The generator 2 is fixedly connected to the support frame 4. The support frame 4 can be Figure 1 It is composed of four supporting legs with a central tilt setting, and can also be composed of Figure 2 The structural composition shown. Figure 2The support frame 4 includes a support plate 401, to which the generator 2 is fixed. Three L-shaped support rods 402 are evenly distributed on the top of the support plate 401. The vertical sections of the three support rods 402 are fixed to the support plate 401, and the horizontal sections of the three support rods 402 are fixed to the connecting ring. The connecting ring is equipped with a bearing inside. The bottom of the rotating shaft 3 passes through the bearing and connects to the generator 2. The bearing can be a rolling bearing or a sliding bearing to ensure smooth rotation. The support frame 4 is made of corrosion-resistant steel and is anchored to the foundation concrete platform with embedded bolts at the bottom.

[0058] The bottom end of shaft 3 is connected to the generator rotor via a coupling, transmitting rotational torque. This coupling utilizes an elastic coupling or a gear coupling to absorb minor misalignments and impacts during operation. Shaft 3 is constructed of 45# steel or stainless steel. Generator 2 can also be equipped with a brake system for emergency stopping, such as a limit plate or electromagnetic brake. The brake system is connected to the generator using existing technology.

[0059] A monitoring system can also be configured by installing an anemometer, a speed sensor, and a voltage / current detector on the above-mentioned power generation device, and uploading the data to the host computer system in conjunction with a wireless module.

[0060] The operating method of the wind power generation device provided in this embodiment is as follows: wind enters the barrel body 1 and acts on the barrel wall and the ventilation hole 101. The barrel body 1 generates a rotational torque due to the pressure difference and asymmetric airflow. The barrel body 1 drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the connected generator 2 rotor to rotate. The generator 2 outputs electrical energy to the energy storage or transmission system, and can detect the wind speed, voltage, and current through the monitoring system to adjust the operating status.

[0061] Example 2

[0062] A vertical axis barrel type wind turbine generator device. The technical solution in this embodiment is basically the same as that in embodiment 1, except that the arrangement of the ventilation holes 101 is optimized in this embodiment.

[0063] The plurality of ventilation holes 101 can be arranged on the side wall of the barrel body 1 in one or more of the following ways: circumferential symmetrical arrangement, asymmetrical offset arrangement, longitudinal spiral arrangement, and strip area concentrated arrangement, as follows:

[0064] 1. Circumferentially symmetrical arrangement

[0065] The plurality of ventilation holes 101 are evenly distributed around the barrel 1, for example, one row is set every 120 degrees, for a total of 3 rows. Figure 8 shown.

[0066] Principle: Under different wind directions, a part of the holes are on the main windward side, which enhances the adaptability to wind direction; the symmetrical arrangement maintains the structural balance and reduces the shaking of the barrel.

[0067] Features: high stability, low starting threshold, slow rotation but good continuity.

[0068] 2. Asymmetric bias arrangement

[0069] The ventilation holes 101 are mainly arranged on one side of the barrel 1 (e.g. within a 180° range), and no holes or very few holes are provided on the other side. Figure 6 shown.

[0070] Principle: It creates obvious fluid deflection difference and force imbalance, thereby enhancing the initial rotation torque and enabling the barrel to start rotating even without a guide wind device.

[0071] Features: strong starting ability and large initial torque, but may cause vibration problems due to imbalance.

[0072] 3. Spiral longitudinal arrangement

[0073] The ventilation holes 101 are arranged in a spiral shape along the height direction of the barrel body 1, and each row of holes is rotated by a certain angle (such as 15-30 degrees) relative to the previous row along the barrel body 1. Figure 9 shown.

[0074] Principle: Simulating the propeller effect, the air flows through the hole to form a tangential component force superimposed on the rotation torque, which can effectively guide the conversion of wind energy into rotation torque.

[0075] Features: Strong rotation continuity, conducive to high-speed operation, suitable for double-barrel structure or multi-barrel structure.

[0076] 4. Strip area centralized layout

[0077] All ventilation holes 101 are concentrated in a certain annular strip area in the middle or upper part of the barrel body 1 to form a "high-efficiency action area", such as Figure 10 shown.

[0078] Principle: This area is where wind pressure is most concentrated. Concentrated holes can strengthen the shear force in a single area, enhance controllability, and facilitate structural design and strength optimization.

[0079] Features: Easy to modularize, highly compatible with rib design, suitable for unified control in multi-barrel systems.

[0080] The ventilation hole 101 can also be optimized, and a guide plate 1011 can be added inside the ventilation hole 101 (such as Figure 11 The guide vanes 1011 can be micro-adjustable wind rudders, such as those using MEMS motorized control or wind pressure sensors, to automatically adjust the direction and size of the opening, improving wind energy responsiveness. In high wind speeds, some vents can be automatically closed to prevent damage to the structure due to excessive speed.

[0081] Optimization suggestions and combination strategies:

[0082] In high wind speed areas, elliptical holes + spiral arrangement is recommended to enhance aerodynamic efficiency; when high starting capability is required at low wind speeds, circular holes + offset arrangement or centralized arrangement is adopted; when maximizing power output, long strip holes + spiral arrangement is adopted, supplemented by a guide vane structure.

[0083] Example 3

[0084] A vertical axis barrel type wind power generation device, such as Figure 12 As shown, the technical solution in this embodiment is basically the same as that in Example 1 or Example 2, except that: a barrel body is provided in this embodiment, and an air guide cover 5 is provided above the barrel body 1.

[0085] The air guide cover 5 is conical in shape, with a groove at the top of the rotating shaft 3. An electrically operated telescopic rod is positioned within the groove. The inner axis of the air guide cover 5 is fixedly connected to the telescopic end of the electrically operated telescopic rod via the connector described in Example 1, similar to an umbrella-like structure. The electrically operated telescopic rod allows the air guide cover 5 to move up and down. The bottom diameter of the air guide cover 5 is greater than or equal to the outer diameter of the barrel 1. The air guide cover 5 is made of a corrosion-resistant alloy.

[0086] The air guide cover 5 has multiple scientific and reasonable functions and advantages, as follows:

[0087] 1. Effect on aerodynamics

[0088] 1. Enhance the air inlet diversion effect

[0089] The air guide cover 5 can change the streamline direction of the wind when it passes over the barrel body 1, guiding part of the wind to the outside of the barrel body 1 and the hole area, thereby increasing the pressure difference between the inside and outside of the barrel body 1, inducing more air to perforate to form rotational thrust, and improving the system's startup sensitivity and rotation efficiency.

[0090] 2. Reduce top reflux disturbance

[0091] When wind blows over the top of the barrel 1, a vortex recirculation zone is easily formed, causing negative pressure disturbance and weakening the rotational torque. The wind guide cover 5 can block some of the turbulent recirculation, stabilize the wind field flow, and help improve the overall rotation stability.

[0092] 2. Effect on structural protection

[0093] 1. The electric telescopic rod can drive the air guide cover 5 to move up and down, so that there is no distance between the air guide cover 5 and the barrel body 1, preventing rain, snow, dust and sand from entering the barrel body 1. The top opening design of the barrel body 1 is prone to water accumulation or dust ingress. The air guide cover 5 structure can play a good shielding role, which is particularly suitable for rainy or windy weather, plateaus, deserts and other harsh environments.

[0094] 2. Protect bearings and motor transmission components. Bearings or connecting mechanisms are prone to rust and erosion if exposed for a long time. The air guide cover 5 can prevent the intrusion of water vapor and particulate matter, thereby extending the service life of the components.

[0095] The air guide cover 5 can also be optimized, for example:

[0096] 1. Integrate wind rudders or streamlines on the side wall of the wind guide cover 5. Add several directional rudders 501 (such as Figure 13 As shown in the figure, it further guides the incoming wind direction, which is conducive to forming a fixed offset aerodynamic path and improving the rotation consistency.

[0097] 2. Flexible thin-film photovoltaic modules can be integrated. The wind guide cover 5 is made of non-transparent material, and flexible thin-film photovoltaic modules are attached to its outer surface to form a wind-solar synergistic system and realize energy reuse in the top space.

[0098] The wind power generation device provided in this embodiment is based on the following key aerodynamic and energy conversion principles:

[0099] 1. Principle of pressure difference driven rotation

[0100] When wind flows through a hollow barrel with ventilation holes, uneven pressure distribution occurs inside and outside the barrel due to the airflow speed and direction at different locations within the barrel, as well as the design of the ventilation holes. According to Bernoulli's principle, areas with higher wind speeds correspond to lower pressure, while areas with lower wind speeds correspond to higher pressure, creating a pressure differential within the barrel. This pressure differential exerts a resulting torque on the barrel, causing it to rotate the shaft, generating mechanical kinetic energy that can be used to generate electricity.

[0101] 2. Principle of Asymmetric Airflow Induced Torque

[0102] By rationally designing the distribution and inclination of the ventilation holes, the airflow entering the barrel is deflected in a directional manner, creating differences in aerodynamic torque on different sides of the barrel. This asymmetry generates a continuous rotational torque on the barrel, similar to the operating principle of a "Savonius wind turbine," but with a simpler and lower-cost design.

[0103] 3. The principle of converting kinetic energy into electrical energy

[0104] The barrel is fixed to a vertical shaft. When the barrel rotates, it drives the shaft to rotate synchronously. The shaft is connected to the generator below, which converts wind energy into electrical energy through a mechanical-electromagnetic energy conversion process, thus generating electricity.

[0105] 4. Eddy Current Induction and Enhanced Rotational Stability

[0106] The presence of the vents not only creates a pressure difference but also induces a certain internal vortex structure. These vortices further enhance the stability and continuity of the barrel's rotation, thereby improving the system's power generation efficiency and operational reliability.

[0107] 5. Low starting wind speed characteristics

[0108] Compared with traditional horizontal axis wind turbines that have higher wind speed requirements, the barrel-type structure of the present invention has a lower starting wind speed requirement due to its larger wind receiving area and internal pressure difference mechanism, and is more suitable for areas with frequent wind speed fluctuations or low-to-medium density of wind energy resources.

[0109] The vertical axis barrel type wind power generation device provided by the present invention has the following beneficial effects:

[0110] 1. Improved the starting performance and wind energy utilization efficiency of wind power generation equipment

[0111] The present invention evenly opens multiple inclined ventilation holes on the side wall of the barrel body, and each ventilation hole has an inclination angle of 15-45 degrees relative to the tangent direction. It can drive the barrel body to start rotating under low wind speed conditions of 2.0-3.0m / s, which is significantly lower than the starting wind speed of more than 4.0m / s of traditional vertical axis wind power devices. The starting point of wind energy capture is advanced, and the scope of wind energy utilization is wider.

[0112] 2. Improve aerodynamic characteristics and enhance rotational stability

[0113] The arrangement of the inclined ventilation holes matches the direction of the barrel's rotation, creating a continuous, directional internal vortex that enhances the driving torque output. CFD (computational fluid dynamics) simulations show that at a typical wind speed of 6.0 m / s, the barrel can achieve a stable torque output of ≥50 N·m, with an operating deviation of less than ±5%, demonstrating excellent dynamic stability and responsiveness.

[0114] 3. Enhance safety and adaptability in high wind speed environments

[0115] The air guide cover installed on the top of the barrel has a flow resistance adjustment function, which can effectively reduce the air intake of the ventilation holes by 15-25% when the wind speed exceeds 10.0m / s, thereby controlling the maximum speed of the system to within 110% of the rated value, preventing mechanical wear or failure caused by overspeed rotation, and improving the overall wind resistance level to meet the use requirements of wind zone level 6 and above.

[0116] 4. Improve protection performance and adapt to various climate environments

[0117] The air guide cover can be made of corrosion-resistant alloy material, with a 10-year or greater outdoor weather resistance. Its waterproof seal effectively blocks foreign matter such as wind, sand, and rain from entering the cylinder. Dustproof boots can be installed on shafts and bearings, increasing the mean time between failures (MTBF) of key components to 30,000 hours or greater, significantly extending maintenance cycles.

[0118] 5. Reasonable structural design, low manufacturing and maintenance costs

[0119] The overall device consists of five modules (barrel, ventilation holes, rotating shaft, generator, and wind guide cover), which can be mass-produced in a standardized manner. It is suitable for micro-power systems in remote areas or energy replenishment scenarios on building roofs. Compared with traditional propeller or multi-blade vertical axis fans, the material and manufacturing costs can be reduced by about 10-30%.

[0120] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical axis barrel type wind power generation device, characterized in that: The invention comprises a generator (2), wherein the input shaft of the generator (2) is connected to a rotating shaft (3) arranged in a vertical direction, a plurality of hollow barrel bodies (1) are arranged on the outside of the rotating shaft (3) along the height direction, a plurality of ventilation holes (101) are penetrated through the side wall of the barrel body (1), the barrel body (1) is fixedly connected to the rotating shaft (3), and the rotating shaft (3) is located on the central axis of the barrel body (1); and further comprises a support frame (4), and the generator (2) is connected to the support frame (4).

2. The vertical axis barrel type wind power generation device according to claim 1, characterized in that: The ventilation hole (101) is in the shape of one or more of a circle, an ellipse or a strip.

3. The vertical axis barrel type wind power generation device according to claim 1, characterized in that: The ventilation hole (101) is arranged tilted, and the ventilation hole (101) is tilted 15-45 degrees radially relative to the barrel body (1).

4. The vertical axis barrel type wind power generation device according to claim 1, characterized in that: The plurality of ventilation holes (101) are arranged on the side wall of the barrel body (1) in one or more of the following ways: circumferential symmetrical arrangement, asymmetrical offset arrangement, longitudinal spiral arrangement, and strip area concentrated arrangement.

5. The vertical axis barrel type wind power generation device according to claim 1, characterized in that: The top of the barrel body (1) is an open end, and a plurality of connecting pieces are provided inside the barrel body (1) along the axial direction, and the connecting pieces are fixedly connected to the rotating shaft (3).

6. The vertical axis barrel type wind power generation device according to claim 5, characterized in that: The connecting member comprises a fixing ring (102), the fixing ring (102) being fixedly connected to the rotating shaft (3), a plurality of connecting rods (103) being provided on the outer peripheral wall of the fixing ring (102), and the connecting rods (103) being fixedly connected to the inner wall of the barrel body (1).

7. The vertical axis barrel type wind power generation device according to claim 1, characterized in that: A guide plate (1011) is provided on the inner wall of the ventilation hole (101).

8. The vertical axis barrel type wind power generation device according to claim 1, characterized in that: The barrel body (1) is provided outside the rotating shaft (3) along the height direction, and an air guide cover (5) is provided above the barrel body (1).

9. The vertical axis barrel type wind power generation device according to claim 8, characterized in that: The air guide cover (5) is conical in shape.

10. The vertical axis barrel type wind power generation device according to claim 8, characterized in that: The outer surface of the wind guide cover (5) is provided with a flexible thin-film photovoltaic assembly; the material of the wind guide cover (5) is a non-light-transmitting material.

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