Small vertical axis wind gathering power generation equipment used in multiple scenes

Abstract

The invention relates to the technical field of vertical wind power generation, and discloses small vertical axis wind gathering power generation equipment used in multiple scenes, which comprises a power generation unit, an air inlet flow guide unit and an air outlet flow guide unit, the air inlet flow guide unit comprises a bottom supporting plate and a plurality of coaxially-arranged flow guide plates, an air inlet channel is formed between every two adjacent flow guide plates, each flow guide plate is in a downward flaring fan-shaped horn shape, a bottom opening of each flow guide plate is a first air inlet, and a top opening of each flow guide plate is a second air inlet. The second air inlets of the guide plates are gradually increased from bottom to top and are combined to form an inverted-cone-shaped air inlet area, and the air inlet channel is communicated with the air inlet area; the air outlet flow guide unit comprises an air outlet flow guide cover which is of a horn-shaped structure flared upwards, the bottom of the air outlet flow guide cover is connected with the flow guide plate located on the top, and the power generation unit is located in the connecting area of the air outlet flow guide cover and the flow guide plate. According to the invention, efficient, flexible and low-cost wind power generation is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical wind power generation, and in particular to a small vertical axis wind-collecting power generation device for use in multiple scenarios. Background Art

[0002] Driven by the transformation of the global ecological and energy structure, clean energy development has attracted much attention. As a clean and renewable energy source, wind energy is becoming increasingly important. According to data from the International Energy Agency, wind power accounted for 4% of global electricity supply in 2020, and is expected to rise to 18% by 2050.

[0003] There are two main types of wind power generators: horizontal axis and vertical axis. Horizontal axis generators are mature in technology and have high power generation efficiency. They are mostly installed in areas with strong winds and open terrain such as Northeast China, North China, Northwest China and coastal areas, and can meet their requirements for wind speed. However, in other areas with low wind speeds and complex terrain, horizontal axis generators are difficult to operate effectively, resulting in a waste of wind energy.

[0004] To solve the limitation of horizontal axis generator application, vertical axis generator was born. It is small in size and compact in structure. The blades are arranged around the vertical axis. It can receive wind energy from all directions and is suitable for low wind speed and variable wind direction environment. For example, the universal wind gathering wind power generation device with publication number CN110863943A gathers wind energy through the wind induction unit, increases wind energy density, reduces starting wind speed, and improves wind energy utilization efficiency.

[0005] However, during the actual operation, the device exposed a series of problems that needed to be solved:

[0006] 1. Turbulence problem at the air inlet: At the air inlet of the wind turbine, the airflow is easily affected by the air inlet structure and the surrounding complex environment, which can easily form turbulent flow. This turbulence will destroy the stability of the airflow, making it impossible for the wind energy entering the power generation device to act on the blades in a concentrated and orderly manner, resulting in a large amount of wind loss and affecting the power generation efficiency.

[0007] 2. Energy loss of the guide plate: When the wind enters the air inlet channel, it will strongly collide with the guide plate. This collision will not only cause part of the wind energy to be lost in the form of heat energy, but also change the direction and speed of the airflow, causing the flow of the airflow in the channel to become unstable. From the perspective of energy conversion, this energy loss causes the wind energy that could have been used for power generation to be consumed unnecessarily, reducing the energy conversion efficiency of the entire power generation device.

[0008] 3. Conversion efficiency and power generation bottlenecks: Although the device can theoretically improve the efficiency of wind energy utilization, in actual applications, the incremental conversion efficiency of its power generation device is extremely limited, and the increase in power generation is not obvious, making it difficult to meet the growing energy demand and market expectations for high-efficiency wind power generation equipment.

[0009] In response to the above problems, the applicant has innovatively designed a small vertical axis wind power generation equipment for use in multiple scenarios after a long period of in-depth research, repeated experiments and a large amount of data accumulation. The equipment aims to overcome the shortcomings of existing technologies and achieve efficient, flexible and low-cost wind power generation to meet the diverse wind energy utilization needs in different scenarios. Summary of the invention

[0010] The present invention is intended to provide a small vertical axis wind power generation equipment for use in multiple scenarios, so as to achieve efficient, flexible and low-cost wind power generation and meet the diverse wind energy utilization needs in different scenarios.

[0011] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a small-scale vertical axis wind concentrating power generation equipment for use in multiple scenarios, including a power generation unit, and also including an air inlet guide unit and an air outlet guide unit; the air inlet guide unit includes a bottom support plate and a plurality of coaxially arranged guide plates, an air inlet channel is formed between two adjacent guide plates, each guide plate is in the shape of a fan-shaped trumpet with a downward expansion, the bottom opening of each guide plate is a first air inlet, and the top opening is a second air inlet, the second air inlet of each guide plate gradually increases from bottom to top and is combined to form an inverted cone-shaped air inlet area, and the air inlet channel is connected to the air inlet area; the air outlet guide unit includes an air outlet guide cover, the air outlet guide cover is in the shape of a trumpet with a downward expansion, the bottom of the air outlet guide cover is connected to the guide plate located at the top, and the power generation unit is located in the connection area between the two.

[0012] This solution has the following beneficial effects:

[0013] 1. Universal wind gathering, low wind speed power generation, high wind energy utilization rate: In this scheme, an air inlet channel is formed between adjacent guide plates in the air inlet guide unit. Each guide plate is in the shape of a trumpet with a downward expansion. The air inlet gradually increases from bottom to top, and the internal combination forms an inverted cone-shaped air inlet area. The annular air inlet channel can guide the airflow in all directions to enter the air inlet area. The air inlet area gathers and speeds up the wind in any direction, and then flows to the power generation blades to generate electricity. Regardless of how the wind direction changes, this power generation equipment can collect wind energy to the greatest extent and realize universal wind gathering.

[0014] In low wind speed environments, traditional power generation equipment is difficult to start or has low power generation efficiency because it cannot obtain enough wind energy. The design of the wind inlet guide unit of this equipment effectively reduces the starting wind speed. Since the wind inlet channel is connected to the wind inlet area, the wind energy forms an acceleration effect in the wind inlet area, which increases the wind energy density reaching the power generation blades. The power generation blades fully receive the converged wind energy and efficiently convert the wind energy into mechanical energy, which in turn drives the engine to generate electricity. Compared with traditional devices, this power generation equipment can operate more stably at low wind speeds, greatly improves the power generation efficiency, and makes full use of the low wind speed wind energy resources that were previously wasted.

[0015] At present, most small vertical axis wind turbines on the market are difficult to start at a wind speed of 2m / s. Generally, they need a wind speed of more than 3m / s to start generating electricity, and the full-power wind speed is usually above 8m / s. After a lot of research and experiments, it was found that the power generation equipment of this scheme can be started and generated at a wind speed of 2m / s, and the power generation equipment can achieve full power generation at a wind speed of 3-4m / s, with a high wind energy utilization rate.

[0016] 2. Small airflow loss and high power generation efficiency: In the existing vertical axis power generation equipment, there are a series of potential problems in the structural design of the air inlet pipe. From the perspective of geometric analysis, the change in the diameter of the air inlet area of ​​the air inlet pipe shows a special trend. The closer to the air inlet, the smaller the diameter. The original intention of this design of diameter contraction is to converge the airflow, but it is counterproductive in actual operation. When airflows from different directions converge to the air inlet, the narrow channel limits the airflow space. The airflows interact with each other in a limited space, resulting in complex fluid mechanics phenomena, such as mutual collision and interference between airflows, which in turn trigger the formation of turbulence. The emergence of turbulence not only increases the degree of airflow turbulence, resulting in a large amount of wind energy being lost in the form of heat energy, but also makes the wind direction and wind speed of the airflow extremely unstable, which makes it difficult for the power generation blades to capture wind energy stably, ultimately resulting in a significant reduction in power generation efficiency and wind energy conversion efficiency.

[0017] In this solution, the air inlets of each guide plate in the air inlet guide unit gradually increase from bottom to top, and together form an inverted cone-shaped air inlet area. From the perspective of fluid dynamics, when the airflow passes through this gradually expanding channel, the flow rate will gradually decrease and the pressure will gradually increase. In this process, the kinetic energy of the airflow is gradually converted into pressure energy, thereby achieving a smooth transition of the airflow. The originally chaotic small airflows are effectively integrated in the air inlet area, and the flow rate and direction are reasonably regulated, which greatly reduces the turbulence caused by the turbulence of the airflow. In this way, the airflow can act on the power generation blades more concentratedly and orderly, effectively improving the power generation efficiency.

[0018] In addition, the inverted cone design of the wind inlet area provides a larger rotational sweep area for the power generation blades, which increases the rotation radius of the power generation blades. During the rotation process, the overall swept area of ​​the power generation blades increases significantly, which can capture more wind energy and increase the power generation. The increase in power generation directly reflects the improvement in power generation efficiency. This design optimizes power generation efficiency from multiple dimensions, fully tapping the potential of wind energy while ensuring the stability of airflow, and achieving a significant increase in power generation efficiency.

[0019] 3. Small size, wide range of use, high space utilization: The traditional horizontal axis wind power generation concept is that the higher the position, the stronger the wind captured and the more energy generated, so the wind turbines are getting bigger and bigger, and the installation site requirements are strict; while the overall structure of the power generation equipment in this scheme is compact, with a small footprint, and can be used in multiple scenarios. For example: in an urban environment, it can be easily installed on the roofs of various buildings to generate electricity, reducing dependence on traditional power grids; in small industrial parks, the equipment can be flexibly arranged in various corners of the park to meet part of the electricity needs of enterprises in the park, improve energy utilization efficiency, and reduce production costs; in remote mountainous areas, according to the terrain characteristics and wind direction of the mountainous areas, the installation location can be flexibly selected, such as valleys, hillsides, etc., to make full use of the wind energy resources in the mountainous areas, provide a stable power supply for remote areas, and promote local economic development and improvement of life; for special areas such as islands, due to inconvenient transportation and difficult energy supply, the transportation and installation costs of traditional large-scale power generation equipment are extremely high. This power generation equipment is small in size, light in weight, easy to transport and install, and can be installed in places with abundant wind energy such as the seaside and mountain tops to provide electricity for island residents and island facilities, solving the long-standing energy shortage problem on islands.

[0020] Moreover, due to the compact design of the power generation equipment, multiple vertical axis power generation equipment can be efficiently arranged in the same area, effectively improving space utilization and increasing the power generation efficiency per unit area. The power generation equipment of this solution can also be combined with solar power generation equipment for power generation, without interference between the two, and maximizing space utilization and clean energy output.

[0021] 4. Low manufacturing cost, short cost recovery period, and high economic benefits: From the perspective of equipment manufacturing, the power generation equipment of this solution has a relatively simple structure, a small number of parts, and a relatively easy manufacturing process, which effectively reduces the cost of raw materials and manufacturing. The air inlet and outlet guide units are made of more common materials, and the shape design is easy to process and form, which further reduces the cost. In terms of installation and maintenance, the small size and modular design of the equipment make the installation process simple and quick, reducing the manpower and time costs required for installation. The modular design also facilitates later maintenance and parts replacement, reducing maintenance costs.

[0022] Secondly, this power generation equipment has high power generation efficiency and can generate more electricity in a shorter time, thereby increasing power generation revenue and effectively shortening the cost recovery period. The cost recovery period of traditional horizontal axis wind turbines is 7-12 years, while the cost recovery period of this solution is about 3 years. It has high economic benefits and meets the growing energy demand and market expectations for high-efficiency wind power generation equipment.

[0023] 5. Modular design and easy installation: This solution adopts a modular design. The air inlet guide unit, air outlet guide unit and power generation unit are all independent modules, and the modules are assembled through simple connection methods. The guide plates of the air inlet guide unit can be pre-made and quickly spliced ​​at the installation site. The modular design simplifies the installation process. No professional large-scale installation equipment is required, and ordinary technicians can complete the installation work. Moreover, in different application scenarios, the combination and installation position of the modules can be flexibly adjusted according to actual needs. Even in areas with complex terrain and inconvenient transportation, the equipment can be installed quickly, which improves the implementation efficiency of the project and reduces the installation cost and time cost.

[0024] 6. Beautiful appearance and high degree of environmental integration: Traditional large-scale wind power generation equipment is usually huge in size and has a relatively simple appearance. In some areas with high landscape requirements, it may cause a visual impact on the surrounding environment. The design of this small vertical axis wind power generation equipment fully considers the factors of beautiful appearance and environmental integration. The unique trumpet-shaped structure of the air inlet and outlet guide units makes the appearance design of the entire equipment simple and elegant, which can be well integrated with the surrounding natural environment and architectural style. Whether it is installed on the roof of a building in the city or in a natural scenic area, it will not appear abrupt. This high degree of environmental integration ensures that the equipment will not have a negative impact on the surrounding environment while realizing the power generation function, but will enhance the overall beauty of the environment.

[0025] 7. Low noise and environmentally friendly: Compared with the traditional horizontal axis wind turbines, which have extremely high noise, the vertical axis wind turbines of this scheme generate very little noise during operation. It has been found in practice that the noise level is only 40 decibels at a wind speed of 6 meters per second. This feature makes the power generation equipment very suitable for use in densely populated areas such as cities and residential areas. It will not interfere with the lives of residents and will also reduce noise pollution to the environment. Moreover, compared with horizontal axis wind turbines, this power generation equipment is small in size, has a low blade speed, and poses a reduced threat to flying birds. The circularly distributed blades have a better visual warning effect on flying birds, making it easier for birds to detect and avoid the equipment.

[0026] Furthermore, among two adjacent guide plates, the second air inlet of the guide plate located at the bottom is flush with the first air inlet of the other guide plate.

[0027] Beneficial effects: The above-mentioned arrangement constructs a relatively regular air inlet channel and maximizes the space of the air inlet channel. When the airflow enters such a channel, the cross-sectional area of ​​the channel changes evenly, the airflow is minimally disturbed, and a relatively stable laminar state can be maintained. During the diffusion and convergence of the airflow, since the bottom and top of the two adjacent guide plates are flush, the flow path of the airflow in the channel is more regular, avoiding sudden changes and turbulence in the local airflow. In a complex airflow environment with frequent changes in wind speed, the regular air inlet channel can accurately guide the airflow, allowing the airflow to converge smoothly to the power generation blades, preventing the airflow from colliding with the guide plates, reducing the loss of wind energy during transmission, and more efficiently converting wind energy into mechanical energy, thereby driving the engine to generate electricity, effectively improving the power generation efficiency.

[0028] On the other hand, the flush design makes the installation process more convenient, allowing workers to assemble more quickly and accurately, reducing errors and adjustment time during the installation process, further improving the overall installation efficiency of the equipment, shortening the project construction period, and enabling the equipment to be put into use faster.

[0029] Furthermore, the cross-sectional shape of each guide plate is curved, including a plurality of smoothly connected streamline segments, and the curvature radius of the streamline segments ranges from 1000 mm to 3500 mm.

[0030] Beneficial effects: The curved structure can minimize the resistance of the airflow. When the airflow flows through the guide plate, the smoothly connected streamline segments allow the airflow to flow naturally and smoothly along the surface of the guide plate, greatly reducing the separation and turbulence of the airflow. In a complex and changeable airflow environment, the airflow that may have been locally turbulent can flow to the power generation blades stably and concentratedly under the guidance of the curved guide plate; at the same time, the amplitude and frequency of pressure fluctuations are reduced, reducing noise.

[0031] Secondly, the curved structure can evenly disperse the wind force over the entire guide plate, improving the structural strength and stability of the guide plate. This not only helps to ensure the normal operation of the equipment in harsh environments, but also further extends the service life of the equipment and reduces the maintenance and replacement costs caused by structural damage. This is consistent with the improvement goals of improving equipment stability and reducing maintenance costs, and together provides guarantees for the long-term stable operation of the equipment.

[0032] The cross-sectional curvature radius of the guide plate is in the range of 1000mm-3500mm, and this curvature radius range can realize efficient regulation of airflows at different wind speeds. When the curvature radius is at a smaller value of about 1000mm, the streamline segment has a stronger restraining effect on the airflow. In the case of high wind speed, it can effectively reduce the diffusion angle of the airflow, so that the airflow acts more concentratedly on the power generation blades, avoiding energy loss caused by excessive dispersion of high-speed airflow. For example, in a strong wind environment with a wind speed of more than 15m / s, a smaller curvature radius can converge the airflow into a stable beam to ensure the stability of power generation efficiency. When the curvature radius is a larger value of about 3500mm, the streamline segment has a higher tolerance for airflow and is suitable for use at low wind speeds. In an environment with a wind speed of less than 5m / s, a larger curvature radius can expand the convergence range of the airflow, effectively gather the dispersed wind energy, and accelerate the flow of the airflow, thereby giving full play to the advantages of high sensitivity and low starting torque of the power generation equipment at low wind speeds and improving power generation efficiency.

[0033] When the wind direction changes frequently, a smaller radius of curvature is used so that the deflector can quickly change the direction of the airflow and capture wind energy from different directions; under relatively stable wind direction conditions, a larger radius of curvature is selected to improve the efficiency of wind energy convergence. In mountainous areas with complex terrain, by conducting field surveys of the airflow characteristics of different terrains and combining the curvature radius range, the most suitable deflector design can be customized to ensure that the equipment can operate efficiently in complex environments.

[0034] Furthermore, the cross-sectional shape of each guide plate is arc-shaped, and the curvature radius of the cross-section of each guide plate is the same, and the range of the curvature radius is 1500mm-3000mm; the central angle corresponding to the arc-shaped cross-section ranges from 29.71° to 45.84°.

[0035] Beneficial effect: Although the guide plate is designed with a curved cross-section, it can effectively guide the airflow, but due to the diversity of streamline segments, there are slight differences in the airflow guidance effect under different working conditions. After the cross-section shape is improved to an arc shape with the same curvature radius, the airflow guidance is more accurate and uniform.

[0036] According to the boundary layer theory of fluid mechanics, the arc-shaped cross-section can keep the airflow in a more stable flow state within the boundary layer. When the airflow flows through each intermediate guide plate, due to the consistent radius of curvature, the airflow is subjected to uniform force and the flow characteristics are highly similar. Under different wind speed and wind direction conditions, the airflow can flow smoothly along the surface of the guide plate in the same pattern, avoiding airflow turbulence caused by differences in the guide plate cross-section. This makes the wind gathering effect more stable and reliable, the power generation blades can continuously and efficiently obtain wind energy, the power generation efficiency fluctuations are reduced, and the stability and reliability of power generation are further improved. In an environment with gradually changing wind speeds, the equipment can always maintain efficient power generation and reduce the decline in power generation efficiency due to unstable airflow.

[0037] Secondly, the cross-sectional shape of the guide plate is unified into an arc shape with the same radius of curvature, which simplifies the manufacturing process. During the production process, there is no need to design complex and diverse molds for different streamline segments. Only one set of molds suitable for the arc-shaped cross-section is required. This not only reduces the mold development cost and manufacturing time, but also reduces the difficulty of quality control during the production process. The production efficiency is greatly improved, the defective rate is reduced, thereby effectively reducing the overall production cost of the equipment, and facilitating standardized design and installation. Furthermore, the arc-shaped cross-sectional design of the same radius of curvature of each intermediate guide plate makes the structure of the entire air inlet guide unit more consistent. Under the action of wind, the force distribution pattern of each guide plate is similar, and their ability to work together is enhanced. Under extreme working conditions such as strong winds, they can better bear the wind load together, avoid the overall structural imbalance caused by abnormal force on individual guide plates, further improve the overall stability of the equipment, ensure the long-term stable operation of the equipment in harsh environments, reduce the number of failures and repairs caused by structural problems, and reduce the full life cycle cost of the equipment.

[0038] The above-mentioned central angle range design is designed from the perspective of different wind speeds. In a low wind speed environment, a larger central angle makes the guide plate have a larger convergence area for the airflow, and can collect the scattered airflow in a wider area. According to the principles of fluid mechanics, when the airflow passes through the guide plate, it will accelerate along the arc surface. The larger central angle provides a longer acceleration path for the airflow, so that the airflow is faster and more energy-concentrated when it reaches the power generation blades, effectively ensuring the power generation efficiency at low wind speeds. When in a high wind speed environment, the smaller central angle has a stronger constraint on the high-speed airflow, which can tightly converge the high-speed airflow within a smaller range to avoid excessive diffusion of the airflow. At high wind speeds, the kinetic energy of the airflow is large. If it cannot be effectively constrained, it is easy to cause energy dispersion and waste.

[0039] The center angle range also shows good adaptability in different wind directions. No matter which direction the airflow blows from, the guide plate can use its special arc shape and appropriate center angle to guide the airflow to the power generation blades. When the wind direction changes, the arc surface of the guide plate can naturally change the direction of the airflow, so that the airflow converges smoothly on the power generation blades without airflow escape.

[0040] Furthermore, the outer contour of the air inlet guide unit is an inverted cone or a cylinder; when the outer contour is a cylinder, the diameters of the first air inlets of each guide plate are equal; when the outer contour is an inverted cone, the first air inlets of each guide plate gradually increase from bottom to top.

[0041] Beneficial effect: When the outer contour is cylindrical, the diameter of the first air inlet of each guide plate is equal, so that the airflow has a more uniform velocity distribution when entering the air inlet channel. In areas where the airflow is relatively stable and the wind speed and wind direction change less, the cylindrical outer contour can ensure that the airflow enters smoothly, reduce the disturbance of the airflow at the entrance, maintain a stable boundary layer state, and further reduce airflow turbulence, so that the power generation blades can capture wind energy more stably and improve the stability of power generation efficiency. In some inland plain areas, the wind speed and wind direction are relatively stable, and the air inlet guide unit with a cylindrical outer contour can give full play to its advantages and ensure efficient power generation of the equipment.

[0042] The cylindrical profile design is highly symmetrical and the forces in all directions are relatively balanced, which can effectively reduce the shaking and vibration of the equipment, reduce the risk of structural fatigue and damage caused by uneven forces, and extend the service life of the equipment. Secondly, the diameters of the first air inlet of each guide plate are equal, which can achieve a higher degree of standardization in the mold design and manufacturing process, reducing the types and costs of molds. At the same time, standardized guide plates also facilitate quality control in the production process, improve production efficiency, and reduce the defective rate.

[0043] When the outer contour is an inverted cone, the first air inlet of each guide plate gradually increases from bottom to top. In an environment with variable wind speed and complex wind direction, the inverted cone outer contour can act like a funnel to more effectively gather wind energy from different directions. As the airflow flows upward, the gradually increasing air inlet can guide the airflow to accelerate, increase the wind energy density, and make the wind energy reaching the power generation blades stronger and more concentrated. This not only enhances the wind gathering effect, but also improves the power generation efficiency by accelerating the airflow under low wind speed conditions, meeting the power generation needs in complex environments. For example, in coastal areas, which are often affected by the alternation of sea breeze and land breeze, the air inlet guide unit with an inverted cone outer contour can better adapt to this complex airflow condition and ensure the stable operation of the equipment.

[0044] The inverted cone outer contour enhances the wind resistance of the equipment and can better disperse the pressure generated by the wind to the entire air inlet and guide unit to avoid local stress concentration. In extreme weather conditions such as strong winds, the inverted cone outer contour can be like a solid fortress, stably bearing the wind load and ensuring the safe operation of the equipment.

[0045] Furthermore, the longitudinal distance between two adjacent middle guide plates and the longitudinal distance between the uppermost middle guide plate and the top guide plate are the same.

[0046] Beneficial effect: When the air flows in the air inlet channel, the equally spaced deflector layout creates a uniform and stable flow environment for the airflow. According to the principles of fluid mechanics, uniform channel spacing helps maintain a constant flow velocity and pressure distribution of the airflow, avoiding sudden changes in airflow velocity and pressure fluctuations caused by changes in channel spacing.

[0047] In the air inlet guide unit with a cylindrical outer contour, the equally spaced guide plates allow the airflow to enter evenly at a stable flow rate, further enhancing the stability of the boundary layer, making the efficiency of the power generation blades in capturing wind energy more stable and the power generation efficiency fluctuating less. In the inverted cone outer contour, the equally spaced guide plates combined with the gradually increasing air inlet can keep the airflow stable during the acceleration process, and the wind energy convergence effect is better. The power generation blades can continuously and efficiently obtain strong and concentrated wind energy, thereby steadily improving the power generation efficiency and meeting the power generation needs in different environments.

[0048] The equidistant deflector layout enhances the overall structural stability of the air inlet guide unit. The uniform spacing distribution allows each deflector to be more evenly stressed when bearing wind loads, reducing the risk of structural deformation and damage caused by local uneven stress. In the cylindrical outer contour, the equidistant deflectors enhance the stability of its symmetrical structure, further reducing the shaking and vibration amplitude of the equipment under the action of wind, and ensuring the long-term stable operation of the equipment. For the inverted cone outer contour, the equidistant deflectors help to better disperse the pressure generated by the wind, so that the entire unit can still withstand the wind as stably as a solid whole under severe weather conditions such as strong winds, avoiding structural damage caused by local stress concentration, effectively extending the service life of the equipment, and reducing the cost of the equipment throughout its life cycle.

[0049] Furthermore, the air inlet guide unit also includes a supporting structure, which is connected to and fixes each guide plate of the bottom support plate; the supporting structure includes a plurality of support plates, which are evenly distributed in a ring around the support axis.

[0050] Beneficial effects: Multiple support plates are evenly distributed in a ring around the support shaft, which evenly disperses the force of wind on the guide plate, greatly enhancing the stability of the structure. Under extreme working conditions such as strong winds, the evenly distributed support plates can effectively resist wind impact and prevent the guide plate from being deformed, displaced or even damaged due to uneven force, ensuring that the equipment can still operate stably in harsh environments, further extending the service life of the equipment and reducing the maintenance cost of the equipment throughout its life cycle.

[0051] The evenly distributed support plates in an annular shape stabilize the guide plates while also rectifying the airflow to a certain extent. Since the support plates are evenly distributed, the airflow is more evenly and stably disturbed when passing through the channels between the guide plates, thus avoiding airflow turbulence caused by unreasonable local support structures. This further enhances the stability of the airflow boundary layer in the air inlet guide unit with a cylindrical outer contour, makes the efficiency of the power generation blades in capturing wind energy more stable, and further reduces the fluctuation of power generation efficiency; in the inverted cone outer contour, the airflow can maintain a more stable state during the accelerated convergence process, and the power generation blades can more efficiently obtain strong and concentrated wind energy, continuously and steadily improve the power generation efficiency, and meet the power generation needs in different complex environments.

[0052] Furthermore, the guide plate at the top includes an inclined plate structure and a vertical plate structure, and the vertical plate structure is upwardly connected to the air outlet guide cover; the bottom support plate includes a trumpet-shaped structure and a circular structure, and is connected and fixed to the external fixed structure through the circular structure.

[0053] Beneficial effects: The top guide plate adopts a design that combines an inclined plate structure and a vertical plate structure, which can guide the airflow more accurately. The inclined plate structure can effectively change the direction of the airflow, and guide the airflow gathered from the air inlet area to the vertical plate structure at a suitable angle, and then smoothly transport it to the air outlet guide cover. In this process, the kinetic energy loss of the airflow is further reduced, and more wind energy can be retained and used for power generation. In addition, the vertical plate structure is easy to install and position during assembly, so as to achieve fast and accurate installation.

[0054] The trumpet-shaped and circular structure designs of the bottom support plate not only enhance its own stability, but also optimize the connection between the entire device and the external fixed structure. The trumpet-shaped structure helps to further gather the airflow from below, and cooperates with the overall wind gathering function of the air inlet guide unit to improve the efficiency of wind energy utilization. The circular structure provides a larger contact area, allowing the device to be more firmly connected to the external fixed structure, effectively reducing the shaking and displacement of the equipment in complex environments such as strong winds and vibrations, and ensuring the stable operation of the equipment. This structural design enables the equipment to work reliably in various harsh environmental conditions, extending the service life of the equipment and reducing maintenance costs.

[0055] Furthermore, the air outlet guide cover includes an upwardly flared conical guide cover and a first cylindrical guide cover and a second cylindrical guide cover respectively located on the conical guide cover; a protective cover is provided on the outer side of the air outlet guide cover which gradually expands outward vertically downward, and the protective cover is connected to the bottom of the first circular guide cover.

[0056] Beneficial effects: The conical air guide can diffuse the airflow smoothly after the power generation blades have done work, avoiding energy loss and turbulence caused by sudden expansion of the airflow. The first cylindrical air guide and the second cylindrical air guide further stabilize the airflow, ensuring that the airflow is discharged at a uniform speed and direction. This combined design optimizes the airflow circulation of the entire power generation system, reduces the impact of back pressure on the power generation blades, and enables the power generation blades to operate more smoothly, thereby improving power generation efficiency. Under different wind speeds and power generation conditions, this refined airflow control can ensure that the equipment is always in an efficient operating state.

[0057] A protective cover that gradually expands vertically downward is added to the outside of the air outlet shroud, and the protective cover is connected to the bottom of the first circular shroud, which greatly enhances the protection capability of the equipment. The protective cover can effectively block external debris, such as branches, flying birds, sand and dust, from entering the interior of the air outlet shroud, preventing these debris from damaging the power generation unit and the shroud structure. In harsh natural environments, such as windy and sandy areas or areas where birds are active, the protective cover can provide reliable protection for the equipment. At the same time, the outward expansion design can also guide rainwater to slide down quickly, reduce the accumulation of rainwater on the surface of the equipment, and reduce the risk of equipment damage due to corrosion. This series of protective measures effectively extends the service life of the equipment, reduces the frequency of maintenance and replacement of parts, and reduces the full life cycle cost of the equipment.

[0058] Furthermore, the bottom support plate, each guide plate and the air outlet guide cover of the air inlet guide unit are made of metal material or composite material.

[0059] Beneficial effects: Metal materials have high strength, high hardness and good toughness, and can withstand greater wind loads and physical impacts. In strong wind environments, the metal guide unit is not easily deformed, which effectively ensures the accuracy and stability of airflow guidance, and continuously provides stable mechanical energy input for the permanent magnet generator to ensure that the power generation efficiency is not affected. Composite materials have the advantages of light weight, high strength and corrosion resistance. While reducing the overall weight of the equipment, they also improve the fatigue resistance of the components. For example, carbon fiber reinforced composite materials are several times stronger than ordinary metals, but lighter in weight, which makes the equipment more flexible and stable during operation, and can effectively resist corrosion factors in the natural environment, extend the service life of the equipment, and reduce long-term maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 The overall structure of the cylindrical power generation device of Example 1 of the present invention is shown in FIG. Figure 1 .

[0061] Figure 2 This is a cross-sectional view of a cylindrical power generation device according to Example 1 of the present invention.

[0062] Figure 3 The overall structure of the cylindrical power generation device of Example 1 of the present invention is shown in FIG. Figure 2 .

[0063] Figure 4 It is a front view of a cylindrical power generation device according to embodiment 1 of the present invention.

[0064] Figure 5 The overall structure of the inverted cone-shaped power generation device of Example 3 of the present invention is shown in FIG. Figure 1 .

[0065] Figure 6It is a cross-sectional view of an inverted cone-shaped power generation device according to embodiment 3 of the present invention.

[0066] Figure 7 The overall structure of the inverted cone-shaped power generation device of Example 3 of the present invention is shown in FIG. Figure 2 .

[0067] Figure 8 It is a front view of the inverted cone-shaped power generation device according to embodiment 3 of the present invention.

[0068] Fig. 9 Schematic diagram of wind flow guidance of the power generation equipment of the present invention Figure 1 .

[0069] Fig.10 Schematic diagram of wind flow guidance of the power generation equipment of the present invention Figure 2 . DETAILED DESCRIPTION

[0070] The following is further described in detail through specific implementation methods:

[0071] The figure marks in the drawings of the specification include: an air inlet guide unit 1, a bottom support plate 11, an intermediate guide plate 12, a top guide plate 13, an air outlet guide unit 2, an air outlet guide cover 21, a conical guide cover 211, a first cylindrical guide cover 212, a second cylindrical guide cover 213, a power generation unit 3, power generation blades 31, an engine 32, a first air inlet 4, a second air inlet 5, an air inlet channel 6, an air inlet area 7, a support shaft 8, a support plate 9, and a protective cover 10.

[0072] Example 1

[0073] Basically as attached Figure 1-Figure 4As shown: a small vertical axis wind concentrating power generation equipment for use in multiple scenarios, including an air inlet guide unit 1, an air outlet guide unit 2 and a power generation unit 3; the air inlet guide unit 1 includes a bottom support plate 11 and multiple coaxially arranged guide plates, the guide plate includes a top guide plate 13 located at the top and multiple intermediate guide plates 12, an air inlet channel 6 is formed between two adjacent guide plates, the intermediate guide plates 12 and the bottom support plate 11, each guide plate is in the shape of a fan-shaped trumpet with a downward expansion, and the fan-shaped trumpet shape means that the larger end of the guide plate expands downward along an arc line, the bottom opening of each guide plate is set as a first air inlet 4, and the top opening is set as a second air inlet 5, the second air inlet 5 of each guide plate gradually increases from bottom to top, and a fan-shaped inverted cone-shaped air inlet area 7 is formed inside the air inlet guide unit 1, and the air inlet channel 6 is connected to the air inlet area 7. The power generation unit 3 includes power generation blades 31 and an engine 32. The power generation blades 31 are evenly distributed in an annular shape and connected to the engine 32. A support shaft 8 is provided at the bottom of the engine 32 and connected to the bottom support plate 11. The air outlet guide unit 2 includes an air outlet guide cover 21. The air outlet guide cover 21 is a trumpet-shaped structure with an upward expansion. The bottom of the air outlet guide cover 21 is connected to the top guide plate 13. The power generation unit 3 is located in the connection area between the two.

[0074] Through the above arrangement, the annular air inlet channel 6 can guide the airflow in all directions to enter the air inlet area 7. The air inlet area 7 gathers and speeds up the wind from any direction. The wind energy forms an acceleration effect in the air inlet area 7, thereby increasing the wind energy density reaching the power generation blades 31. The power generation blades 31 fully receive the gathered wind energy, efficiently convert the wind energy into mechanical energy, and then drive the engine 32 to generate electricity. Compared with traditional devices, this power generation equipment can operate more stably at low wind speeds, greatly improves the power generation efficiency, and makes full use of the low wind speed wind energy resources that were previously wasted. Moreover, the power generation equipment of this scheme can start to generate electricity at a wind speed of 2m / s, and the power generation equipment can achieve full power generation at a wind speed of 3-4m / s, with a high wind energy utilization rate.

[0075] Secondly, the air inlet area 7 of this scheme is an inverted cone, which gradually expands from bottom to top. When the airflow passes through this gradually expanding channel, the flow rate will gradually decrease and the pressure will gradually increase. The originally disorderly small airflow is effectively integrated in the air inlet area 7, and the flow rate and direction are reasonably regulated, which greatly reduces the turbulence caused by the turbulent airflow. The airflow acts on the power generation blades 31 more concentratedly and orderly, effectively improving the power generation efficiency. In addition, the inverted cone design of the air inlet area 7 provides a larger rotation sweeping area for the power generation blades 31, so that the rotation radius of the power generation blades 31 can be increased. During the rotation process of the power generation blades 31, the overall swept area is significantly increased, which can capture more wind energy, thereby increasing the power generation. After actual application, the wind power generation equipment of this scheme can generate an annual power generation of 3000 kWh at an average wind speed of 6 meters per second, 5100 kWh at an average wind speed of 8 meters per second, and 6100 kWh at an average wind speed of 10 meters per second, which has significant economic benefits.

[0076] Combination Figure 2 , Figure 3 As shown, in the two adjacent guide plates, the second air inlet 5 of the lower guide plate is flush with the first air inlet 4 of the other guide plate. In this way, a relatively regular air inlet channel 6 is constructed, and the space of the air inlet channel 6 is maximized. When the airflow enters such a channel, the cross-sectional area of ​​the channel changes evenly, the airflow is minimally disturbed, and a relatively stable laminar state can be maintained. In the process of airflow diffusion and convergence, since the bottom and top of the two adjacent guide plates are flush, the flow path of the airflow in the channel is more regular, avoiding sudden changes and turbulence in the local airflow, reducing the loss of wind energy during transmission, and more efficiently converting wind energy into mechanical energy.

[0077] The longitudinal distance between two adjacent middle guide plates 12 and the longitudinal distance between the top middle guide plate 12 and the top guide plate 13 are the same. This arrangement forms an equidistant guide plate layout, creating a uniform and stable flow environment for the airflow, helping to maintain a constant flow velocity and pressure distribution of the airflow, and avoiding sudden changes in airflow velocity and pressure fluctuations caused by changes in channel spacing. The wind energy convergence effect is better, and the power generation blades 31 can continuously and efficiently obtain strong and concentrated wind energy, thereby steadily improving the power generation efficiency.

[0078] The cross-sectional shape of the middle guide plate 12 is a curve type, including a number of smoothly connected streamline segments, each streamline segment has a certain curvature, and the curvature radius of the streamline segment ranges from 1000mm to 3500mm. When the curvature radius is at a smaller value of about 1000mm, the streamline segment has a stronger restraining effect on the airflow. In the case of high wind speed, it can effectively reduce the diffusion angle of the airflow, so that the airflow acts more concentratedly on the power generation blades, avoiding energy loss caused by excessive dispersion of high-speed airflow. For example, in a strong wind environment with a wind speed of more than 15m / s, a smaller curvature radius can converge the airflow into a stable beam to ensure the stability of power generation efficiency. When the curvature radius is a larger value of about 3500mm, the streamline segment has a higher tolerance for airflow and is suitable for use at low wind speeds. In an environment with a wind speed of less than 5m / s, a larger curvature radius can expand the convergence range of the airflow, effectively gather the dispersed wind energy, and accelerate the flow of the airflow, thereby giving full play to the advantages of high sensitivity and low starting torque of the power generation equipment at low wind speeds and improving power generation efficiency.

[0079] The top guide plate 13 includes an inclined plate structure and a vertical plate structure, and the vertical plate structure is upwardly connected to the air outlet guide cover 21; the bottom support plate 11 includes a trumpet-shaped structure and a circular structure, and is connected and fixed to an external fixed structure through the circular structure, and the external fixed structure is a fixed platform or a fixed frame.

[0080] Combination Figure 2 As shown, the air outlet shroud 21 includes an upwardly flared conical shroud 211 and a second cylindrical shroud 213 located at the bottom of the conical shroud 211; a protective shroud 10 is provided on the outside of the air outlet shroud 21, and the protective shroud 10 can effectively block external debris, protect the power generation unit 3 and the shroud junction, and guide rain and snow to slide down quickly, reduce accumulation on the surface of the equipment, and extend the service life of the equipment.

[0081] The outer contour of the air inlet guide unit 1 is cylindrical, and the diameters of the first air inlet 4 of each guide plate are equal; the protective cover 10 is cylindrical, and the maximum expansion diameter of the conical guide cover 211 in the air outlet guide cover 21 and the diameter of the protective cover 10 are equal to the diameter of the first air inlet 4 of the guide plate, and the overall contour of the power generation equipment is also cylindrical.

[0082] The cylindrical profile design makes the flow velocity distribution more uniform when the airflow enters the air inlet channel 6, reduces the disturbance of the airflow at the inlet, maintains a stable boundary layer state, further reduces the airflow turbulence, enables the power generation blades 31 to capture wind energy more stably, and improves the stability of power generation efficiency. The cylindrical profile design is also highly symmetrical, and the forces in all directions are relatively balanced, which can effectively reduce the shaking and vibration of the equipment, reduce the risk of structural fatigue and damage caused by uneven forces, and extend the service life of the equipment.

[0083] The air inlet guide unit 1 also includes a supporting structure, which is connected to and fixed to the bottom support plate 11, the middle guide plate 12 and the top guide plate 13; the supporting structure includes a plurality of support plates 9, and the support plates 9 are evenly distributed in a ring around the support shaft 8. In this embodiment, the number of support plates 9 is three, and the three support plates 9 form a triangular support structure to ensure the stability of the entire equipment and avoid obstruction of air intake due to excessive number of support plates 9.

[0084] The outer shell of the engine 32 is designed to be spherical, and the spherical shell includes an upper hemispherical shell and a lower hemispherical shell. The lower hemispherical shell is fixed to the bottom support plate 11 through the support shaft 8. The power generation blades 31 are fixed to the upper hemispherical shell and are driven by the airflow to rotate and drive the engine 32 to generate electricity. The above-mentioned spherical shell design makes the outer lines of the engine 32 smooth, makes the airflow flow smoothly, and reduces airflow turbulence.

[0085] In this embodiment, the engine 32 is a permanent magnet engine 32. The permanent magnet engine 32 does not require external excitation current, which reduces excitation loss and makes the energy conversion process more efficient. In a low wind speed environment, the high sensitivity and low starting torque characteristics of the permanent magnet generator enable it to respond quickly to wind energy changes and start generating electricity. At high wind speeds, its efficient energy conversion mechanism can ensure stable operation of the generator, make full use of wind energy resources, increase the overall power generation of the power generation equipment, and meet electricity demand in more scenarios.

[0086] The permanent magnet generator has a relatively simple structure, and there are no complex brushes, slip rings and other components inside, which reduces the risk of failures caused by component wear, poor contact and other problems. The overall structure of the power generation equipment is more stable and reliable, and it can maintain a good working condition during long-term operation. The lightweight and miniaturized structure of the permanent magnet generator is more in line with the miniaturized design concept of this small vertical axis wind power generation equipment, and can be flexibly installed in a limited space.

[0087] The power generation equipment of this solution has a compact overall structure and occupies a small area. It can be used in multiple scenarios, such as the roofs of urban buildings, small industrial parks, hillsides and valleys in remote mountainous areas, and special areas such as islands with inconvenient transportation and difficult energy supply; it can be used in multiple scenarios. Moreover, due to its compact design, multiple vertical axis power generation equipment can be efficiently arranged in the same area, effectively improving space utilization and increasing the power generation efficiency per unit area. The power generation equipment of this solution can also be combined with solar power generation equipment for power generation, without interference between the two, and maximizing space utilization and clean energy output.

[0088] The overall structure of this power generation equipment is simple and the manufacturing process is relatively easy, which effectively reduces the cost of raw materials and manufacturing, and can generate more electricity in a shorter time, increase power generation revenue, and effectively shorten the cost recovery period. The cost recovery period of traditional horizontal axis wind turbines is 7-12 years, and the cost recovery period of this solution is about 3 years. It has high economic benefits and meets the growing energy demand and market expectations for high-efficiency wind power generation equipment.

[0089] Example 2

[0090] Compared with Example 1, the cross-sectional shape of the middle guide plate 12 in this embodiment is an arc-shaped, and the curvature radius of the cross-section of each middle guide plate 12 is the same, and the curvature radius ranges from 1500mm to 3000mm; the arc-shaped cross-section can keep the airflow in a more stable flow state in the boundary layer. When the airflow flows through each middle guide plate, due to the consistent curvature radius, the airflow is subjected to uniform force and the flow characteristics are highly similar. Under different wind speed and wind direction conditions, the airflow can flow smoothly along the surface of the guide plate in the same pattern, avoiding airflow turbulence caused by differences in the cross-sectional area of ​​the guide plate. This makes the wind gathering effect more stable and reliable, the power generation blades can continuously and efficiently obtain wind energy, the power generation efficiency fluctuations are reduced, and the stability and reliability of power generation are further improved. In an environment with gradually changing wind speeds, the equipment can always maintain efficient power generation and reduce the decrease in power generation efficiency due to unstable airflow.

[0091] The central angle corresponding to the arc-shaped cross-section has an angle range of 29.71°-45.84°; from the perspective of different wind speeds, in a low wind speed environment, a larger central angle makes the guide plate have a larger convergence area for the airflow, and can collect scattered airflow in a wider area. According to the principles of fluid mechanics, when the airflow passes through the guide plate, it will accelerate along the arc surface. The larger central angle provides a longer acceleration path for the airflow, so that the airflow is faster and more energy-concentrated when it reaches the power generation blades, effectively ensuring the power generation efficiency at low wind speeds. When in a high wind speed environment, the smaller central angle has a stronger constraint on the high-speed airflow, which can tightly converge the high-speed airflow within a smaller range to avoid excessive diffusion of the airflow. At high wind speeds, the kinetic energy of the airflow is large. If it cannot be effectively constrained, it is easy to cause energy dispersion and waste.

[0092] The center angle range also shows good adaptability in different wind directions. No matter which direction the airflow blows from, the guide plate can use its special arc shape and appropriate center angle to guide the airflow to the power generation blades. When the wind direction changes, the arc surface of the guide plate can naturally change the direction of the airflow, so that the airflow converges smoothly on the power generation blades without airflow escape.

[0093] Example 3

[0094] Compared with Example 1, Figure 5-Figure 8 As shown, the outer contour of the air inlet guide unit 1 in this embodiment is an inverted cone. At this time, the first air inlet 4 of each guide plate gradually increases from bottom to top, and the bottom of the top guide plate 13 is provided with an annular inwardly bent edge.

[0095] The air outlet deflector 21 includes an upwardly flared conical deflector 211 and a first cylindrical deflector 212 and a second cylindrical deflector 213 respectively located on the conical deflector 211; the outer side of the air outlet deflector 21 is provided with a protective cover 10 which gradually expands vertically downward, and the protective cover 10 is connected to the bottom of the first circular deflector. The trumpet-shaped structure of the protective cover 10 can guide the falling snow in heavy snow weather, effectively prevent the falling snow from accumulating on the power generation device, reduce the bearing pressure of the deflector plate, and extend the service life of the device. A connecting plate is also provided between the protective cover 10 and the conical deflector 211, and the three enclose a closed structure with a hollow interior, which reduces the weight of the device.

[0096] With the above configuration, in an environment with variable wind speed and complex wind direction, the inverted cone outer contour can act like a funnel to more effectively gather wind energy from different directions, such as Fig. 9 , Fig.10 As shown. As the air flows upward, the gradually enlarged air inlet can guide the airflow to accelerate, increase the wind energy density, and make the wind energy reaching the power generation blades 31 stronger and more concentrated. This not only enhances the wind gathering effect, but also improves the power generation efficiency by accelerating the airflow under low wind speed conditions, and meets the power generation needs in complex environments. For example, in coastal areas, which are often affected by the alternating sea breeze and land breeze, the air inlet guide unit 1 with an inverted cone outer contour can better adapt to this complex airflow condition and ensure the stable operation of the equipment.

[0097] The inverted conical outer contour enhances the wind resistance of the equipment and can better disperse the pressure generated by the wind to the entire air inlet guide unit 1 to avoid local stress concentration. In extreme weather conditions such as strong winds, the inverted conical outer contour can stably withstand wind loads and ensure the safe operation of the equipment.

[0098] Example 4

[0099] The bottom support plate 11 of the air inlet guide unit 1 and each guide plate and the air outlet guide cover 21 are made of metal materials or composite materials, such as aluminum alloy, glass fiber, carbon fiber and other materials. Metal materials have high strength, high hardness and good toughness, and can withstand greater wind loads and physical impacts. In addition, compared with metal materials such as aluminum alloy, glass fiber and carbon fiber materials have the characteristics of high strength, low density and corrosion resistance, which can eliminate the weak links that may exist in the traditional splicing process, so that the overall structural strength of the guide plate and the guide cover is greatly improved, and under severe working conditions such as strong winds, it can better withstand wind loads and reduce the risk of deformation and damage. At the same time, compared with traditional materials and manufacturing processes, components made of glass fiber and carbon fiber are lighter, which reduces the overall weight of the equipment, reduces the burden on the supporting structure, and helps to improve the stability of the equipment, especially in scenes where it is installed at high places or has strict requirements on weight. The advantages of lightweight are more obvious, which can further expand the scope of application of the equipment. On the other hand, good corrosion resistance enables power generation equipment to adapt to a variety of harsh environments, such as high-salinity air at the seaside, industrial pollution areas, etc. Glass fiber components can maintain good performance and effectively extend the service life of the equipment. During long-term operation, there is no need to frequently replace guide plates and guide covers, which reduces the cost and time of maintenance and replacement of parts and improves the reliability and economy of the equipment.

[0100] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A small vertical axis wind power generation device for use in multiple scenarios, comprising a power generation unit, characterized in that: It also includes an air inlet guide unit and an air outlet guide unit; the air inlet guide unit includes a bottom support plate and a plurality of coaxially arranged guide plates, an air inlet channel is formed between two adjacent guide plates, each guide plate is in a fan-shaped trumpet shape that flares downward, the bottom opening of each guide plate is a first air inlet, and the top opening is a second air inlet, the second air inlet of each guide plate gradually increases from bottom to top and is combined to form an inverted cone-shaped air inlet area, and the air inlet channel is connected to the air inlet area; the air outlet guide unit includes an air outlet guide cover, the air outlet guide cover is in a trumpet-shaped structure that flares upward, the bottom of the air outlet guide cover is connected to the guide plate located at the top, and the power generation unit is located in the connection area between the two.

2. According to the small-scale vertical axis wind power generation equipment used in multiple scenarios as described in claim 1, it is characterized by: Among two adjacent guide plates, the second air inlet of the guide plate located at the bottom is flush with the first air inlet of the other guide plate.

3. According to the small-scale vertical axis wind power generation equipment used in multiple scenarios as described in claim 1, it is characterized by: The cross-sectional shape of each guide plate is a curve type, including a plurality of smoothly connected streamline segments, and the curvature radius of the streamline segments ranges from 1000 mm to 3500 mm.

4. According to the small-scale vertical axis wind power generation equipment used in multiple scenarios as claimed in claim 3, it is characterized by: The cross-sectional shape of each guide plate is arc-shaped, and the curvature radius of the cross-section of each guide plate is the same, and the range of the curvature radius is 1500mm-3000mm; the central angle corresponding to the arc-shaped cross-section ranges from 29.71° to 45.84°.

5. A small vertical axis wind power generation device for use in multiple scenarios according to any one of claims 1 to 4, characterized in that: The outer contour of the air inlet guide unit is an inverted cone or a cylinder; when the outer contour is a cylinder, the diameters of the first air inlets of each guide plate are equal; when the outer contour is an inverted cone, the first air inlets of each guide plate gradually increase from bottom to top.

6. According to a small-scale vertical axis wind power generation device for use in multiple scenarios as claimed in claim 2, it is characterized by: The longitudinal distances between two adjacent guide plates are the same.

7. According to the small-scale vertical axis wind power generation equipment used in multiple scenarios as claimed in claim 1, it is characterized by: The air inlet guide unit also includes a supporting structure, which is connected to the bottom support plate and each guide plate and fixes them; the supporting structure includes a plurality of support plates, which are evenly distributed in a ring around the support shaft.

8. According to the small-scale vertical axis wind power generation equipment used in multiple scenarios as claimed in claim 1, it is characterized by: The guide plate at the top includes an inclined plate structure and a vertical plate structure, and the vertical plate structure is upwardly connected to the air outlet guide cover; the bottom support plate includes a trumpet-shaped structure and a circular structure, and is connected and fixed to the external fixed structure through the circular structure.

9. According to the small-scale vertical axis wind power generation equipment used in multiple scenarios as claimed in claim 1, it is characterized by: The air outlet guide cover includes an upwardly flared conical guide cover and a first cylindrical guide cover and a second cylindrical guide cover respectively located on the conical guide cover; a protective cover is provided on the outer side of the air outlet guide cover and gradually expands vertically downward, and the protective cover is connected to the bottom of the first circular guide cover.

10. The small vertical axis wind power generation equipment for multiple scenarios according to claim 5, characterized in that: The bottom support plate, each guide plate and the air outlet guide cover of the air inlet guide unit are made of metal material or composite material.

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