Vertical axis wind power device

Abstract

The utility model relates to wind power generation technical field discloses vertical axis wind power generation device, including support tower pole, round tub box, wind wheel subassembly, generator and speed increaser, support tower pole extends along the vertical direction, round tub box and support tower pole coaxial arrangement are set up in the top of support tower pole, and inside is equipped with installation space, wind wheel subassembly and support tower pole coaxial arrangement are set up in the top of round tub box, generator sets up in the installation space, with support tower pole coaxial arrangement, fixed mounting is in the top of support tower pole, speed increaser sets up in the installation space, with support tower pole coaxial arrangement, both ends are connected with wind wheel subassembly and generator's input shaft transmission respectively, the utility model discloses through setting up speed increaser between wind wheel subassembly and generator's input shaft, the relatively lower rotational speed of wind wheel subassembly is promoted and then is delivered to generator, improves the rotational speed of generator rotor, and improves its power generation efficiency and power generation capacity.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically to a vertical axis wind power generation device. Background Technology

[0002] In current wind power technology, most vertical axis wind turbines adopt a direct-drive design where the turbine assembly is directly connected to the generator rotor. This makes the turbine assembly's rotational speed exactly the same as the rotor's speed. However, under normal operating conditions, the rated speed of a vertical axis turbine assembly is typically maintained at only about 200 rpm. When using a direct-drive design, because the generator rotor is directly connected to the turbine assembly and operates at the same speed, the generator rotor can only maintain the same low rotational speed as the turbine assembly. This lower rotor speed leads to insufficient magnetic field cutting speed inside the generator, resulting in low power generation efficiency. Utility Model Content

[0003] In view of this, the present invention provides a vertical axis wind power generation device to solve the problem of low power generation efficiency of vertical axis wind turbines.

[0004] This utility model provides a vertical axis wind power generation device, including a support tower, a cylindrical housing, a wind turbine assembly, a generator, and a speed increaser. The support tower extends vertically. The cylindrical housing is coaxially arranged with the support tower and is located at the top of the support tower, with an internal installation space. The wind turbine assembly is coaxially arranged with the support tower and is located at the top of the cylindrical housing. The generator is located within the installation space, coaxially arranged with the support tower, and fixedly installed at the top of the support tower. The speed increaser is located within the installation space, coaxially arranged with the support tower, and its two ends are respectively connected to the input shafts of the wind turbine assembly and the generator.

[0005] Beneficial effects: By installing a speed increaser between the wind turbine assembly and the generator's input shaft, the relatively low rotational speed of the wind turbine assembly is increased before being transmitted to the generator, thereby increasing the generator rotor speed and improving its power generation efficiency and output. Furthermore, since the support tower, generator, speed increaser, and wind turbine assembly are coaxially arranged, compared to horizontally mounted wind turbines, no angle conversion is required during transmission, shortening the transmission length and reducing frictional losses during mechanical transmission. This allows mechanical energy to be transferred more directly and efficiently between the wind turbine assembly and the generator, maximizing the energy conversion efficiency. Moreover, since both the generator and speed increaser are housed within the cylindrical housing, a favorable operating environment is provided for them, reducing the erosion and corrosion caused by external environmental factors such as wind, rain, and dust. This reduces mechanical wear, maintains the long-term stability of transmission and generator efficiency, and minimizes efficiency losses due to maintenance or component performance degradation. Through the combined effect of these structures, energy losses throughout the entire process from wind energy capture to energy conversion are reduced, improving overall power generation efficiency.

[0006] In one optional embodiment, a first transmission component is further included, which is disposed within the installation space and coaxially arranged with the support tower; wherein the speed increaser is connected to the wind turbine assembly through the first transmission component.

[0007] Beneficial effects: Since the first transmission component is coaxially set with the supporting tower, the first transmission component, speed increaser and wind turbine assembly are all coaxially set, which ensures that the high-speed rotational power can be transmitted with minimal angular deviation or axial offset. This effectively avoids additional friction loss and parasitic power consumption caused by transmission misalignment, flexural deformation or vibration, and ensures the accuracy, coaxiality and stability of power transmission, thereby maximizing the preservation of the high-speed kinetic energy output by the speed increaser.

[0008] In one alternative implementation, the first transmission component is a coupling.

[0009] Beneficial effects: Setting the first transmission component as a coupling allows for precise and stable connection between the speed increaser and the wind turbine assembly, ensuring efficient and stable power transmission during the transmission process. This significantly reduces power loss and transmission failures caused by loose connections or misalignments, improving the reliability and stability of the entire transmission system. Simultaneously, the coupling also possesses excellent buffering and shock absorption capabilities. During the operation of the vertical axis wind turbine, it effectively absorbs and mitigates energy generated by instantaneous impacts or vibrations, reducing damage to the speed increaser and wind turbine assembly and extending the service life of the vertical axis wind turbine. Furthermore, the coupling's relatively simple structure facilitates installation and maintenance, saving significant time and labor costs and ensuring the stable and efficient operation of the vertical axis wind turbine.

[0010] In one optional embodiment, a second transmission component is further included, which is disposed within the installation space and coaxially arranged with the support tower; wherein the speed increaser is connected to the input shaft of the generator through the second transmission component.

[0011] Beneficial effects: Since the second transmission component is coaxially set with the support tower, the input shafts of the second transmission component, the speed increaser, and the generator are all coaxially set, ensuring that high-speed rotational power can be transmitted with minimal angular deviation or axial offset. This effectively avoids additional friction loss and parasitic power consumption caused by transmission misalignment, flexural deformation, or vibration, ensuring the accuracy, coaxiality, and stability of power transmission, thereby maximizing the preservation of the high-speed kinetic energy output by the speed increaser.

[0012] In one alternative embodiment, the second transmission component is a coupling.

[0013] Beneficial effects: Setting the second transmission component as a coupling allows for precise and secure connection between the speed increaser and the generator's input shaft, ensuring efficient and stable power transmission during operation. This significantly reduces power loss and transmission failures caused by loose connections or misalignments, improving the reliability and stability of the entire transmission system. Simultaneously, the coupling provides excellent buffering and shock absorption capabilities, effectively absorbing and mitigating energy generated by instantaneous impacts or vibrations during the operation of the vertical axis wind turbine, reducing damage to the speed increaser and generator's input shafts and extending the service life of the vertical axis wind turbine. Furthermore, the coupling's relatively simple structure and convenient installation and maintenance save considerable time and labor costs, ensuring the stable and efficient operation of the vertical axis wind turbine.

[0014] In one optional embodiment, the wind turbine assembly includes a main shaft and an impeller; the main shaft is coaxially arranged with the supporting tower and its bottom end is connected to the first transmission component; the impeller is connected to the main shaft.

[0015] Beneficial effects: By coaxially aligning the main shaft with the supporting tower, the wind turbine assembly experiences more balanced forces during operation, significantly enhancing the overall structural stability. This effectively reduces additional stress and vibration caused by eccentric rotation, thereby lowering the probability of wear and failure and extending the service life of the wind turbine assembly. The bottom of the main shaft is tightly connected to the first transmission component, ensuring that the wind energy captured by the wind turbine assembly is efficiently and smoothly transferred to the subsequent transmission system, reducing energy loss during transmission and improving wind energy conversion efficiency. The impeller, connected to the main shaft, can fully capture wind forces of different directions and intensities, converting wind energy into mechanical energy to drive the main shaft's rotation. This ensures stable and reliable operation of the wind turbine assembly under various wind conditions, guaranteeing a continuous and stable output of electrical energy for the entire vertical axis wind power generation system.

[0016] In one optional embodiment, the top end wall of the cylindrical housing has a mounting hole; the bottom end of the main shaft is located within the mounting space and is connected to the first transmission component; the top end of the main shaft extends through the mounting hole to the outside of the cylindrical housing and is connected to the impeller.

[0017] Beneficial effects: By opening mounting holes on the top end wall of the cylindrical housing, a precise and reasonable passage is provided for the main shaft, ensuring that the bottom end of the main shaft is located within the installation space and connected to the first transmission component; the top end of the main shaft extends through the mounting holes to the outside of the cylindrical housing and connects to the impeller, allowing the impeller to be fully exposed to the external space, maximizing the capture of power sources such as wind energy, and ensuring high efficiency in energy acquisition; the mounting holes reduce unnecessary connection links and energy losses, improving the energy conversion efficiency of the entire device.

[0018] In one alternative implementation, the supporting tower is a cement pole.

[0019] Beneficial Effects: Using cement poles as support towers for vertical axis wind turbines offers high structural strength and stability. They can withstand the enormous loads generated by the wind turbine components, generators, and other equipment during operation, as well as the complex and ever-changing forces of the natural environment. This provides a reliable support foundation for the entire vertical axis wind turbine, ensuring its safety and stability during long-term operation and reducing the risk of damage or even safety accidents caused by support structure failure. Furthermore, cement poles possess excellent durability and corrosion resistance. Their material properties allow them to resist erosion from harsh environmental factors such as rain, humidity, and salt spray, reducing the need for frequent maintenance and replacement, thereby lowering maintenance and operating costs throughout the entire lifecycle.

[0020] In one alternative implementation, the generator is a permanent magnet generator.

[0021] Beneficial Effects: By configuring the generator as a permanent magnet generator, which utilizes permanent magnets to generate a magnetic field, no additional excitation device is required. This not only simplifies the generator's structure and reduces potential failure points but also significantly improves its reliability and stability. This allows for continuous and stable operation in various complex and harsh environments, effectively reducing downtime and maintenance costs caused by equipment failures. In terms of efficiency, by eliminating the excitation current and reducing energy loss, permanent magnet generators have higher energy conversion efficiency, converting more mechanical energy, such as wind energy, into electrical energy, thereby increasing power generation and providing strong support for efficient energy utilization. Furthermore, permanent magnet generators have a fast response speed, quickly adjusting output power to adapt to rapid changes in external conditions such as wind speed, better adapting to the large fluctuations in wind energy and enhancing the power generation system's ability to capture and utilize wind energy resources. In addition, permanent magnet generators are small in size and light in weight, facilitating installation and transportation, reducing the difficulty and cost of engineering construction.

[0022] In one alternative embodiment, the cylindrical box body is a cylindrical structure or a frustum-shaped structure.

[0023] Beneficial effects: Designing the cylindrical box body as a cylindrical or frustum-shaped structure with a smooth and aesthetically pleasing surface and no sharp edges and corners can effectively reduce wind and water resistance when facing natural external forces such as wind and rain, reduce structural damage caused by external impacts, and improve the stability and durability of the cylindrical box body in complex environments. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a front view of a vertical axis wind power generation device according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the connection between the support tower and the cylindrical box body in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Support tower; 2. Cylindrical housing; 21. Installation space; 3. Wind turbine assembly; 31. Main shaft; 32. Impeller; 4. Generator; 5. Speed ​​increaser; 6. First transmission component; 7. Second transmission component. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0031] According to an embodiment of this utility model, a vertical axis wind power generation device is provided, including a support tower 1, a cylindrical housing 2, a wind turbine assembly 3, a generator 4, and a speed increaser 5; the support tower 1 extends vertically; the cylindrical housing 2 is coaxially arranged with the support tower 1, located at the top of the support tower 1, and has an internal installation space 21; the wind turbine assembly 3 is coaxially arranged with the support tower 1, located at the top of the cylindrical housing 2; the generator 4 is located within the installation space 21, coaxially arranged with the support tower 1, and fixedly installed at the top of the support tower 1; the speed increaser 5 is located within the installation space 21, coaxially arranged with the support tower 1, and its two ends are respectively connected to the input shafts of the wind turbine assembly 3 and the generator 4 for transmission.

[0032] In the above embodiment, by setting a speed increaser 5 between the input shaft of the wind turbine assembly 3 and the generator 4, the relatively low rotational speed of the wind turbine assembly 3 is increased before being transmitted to the generator 4, thereby increasing the rotor speed of the generator 4 and improving its power generation efficiency and output. Furthermore, since the supporting tower 1, generator 4, speed increaser 5, and wind turbine assembly 3 are coaxially arranged, compared to a horizontally arranged wind turbine, no angle conversion is required during transmission, shortening the transmission length and reducing frictional losses during mechanical transmission. This allows mechanical energy to be transmitted more directly and efficiently between the wind turbine assembly 3 and the generator 4, maximizing the power conversion efficiency. Moreover, since both the generator 4 and the speed increaser 5 are located within the installation space 21 inside the cylindrical housing 2, a good operating environment is provided for them, reducing the erosion and corrosion caused by external environmental factors such as wind, rain, and dust, reducing mechanical wear, maintaining the long-term stability of transmission efficiency and generator 4 efficiency, and reducing efficiency losses due to maintenance or component performance degradation. Through the combined effect of the above structures, energy losses throughout the entire process from wind energy capture to power conversion are reduced, improving overall power generation efficiency.

[0033] In a specific embodiment, the cylindrical box 2 includes a first part and a second part arranged in sequence. The first part is fitted around the outer periphery of the support tower 1, and the second part extends away from the support tower 1. The inner wall of the second part and the top of the support tower 1 together form an installation space 21.

[0034] In a specific implementation, by adding a speed increaser 5 mechanism, the rotational kinetic energy of the wind turbine assembly 3 is transmitted to the input shaft of the generator 4. Depending on the design and selection of different types of speed increasers 5, such as planetary gears or hybrid transmissions, the speed of the generator 4 input shaft relative to the speed of the wind turbine assembly 3 can be increased in a ratio of not less than 4:1 to 16:1, thereby driving the rotor of the generator 4 into the high-efficiency operating speed range and improving power generation efficiency and single-unit power generation.

[0035] In one embodiment, a first transmission component 6 is further included, which is disposed within the installation space 21 and coaxially arranged with the support tower 1; wherein, the speed increaser 5 is connected to the wind turbine assembly 3 through the first transmission component 6.

[0036] In the above embodiment, since the first transmission component 6 is coaxially arranged with the support tower 1, the first transmission component 6, the speed increaser 5 and the wind turbine assembly 3 are all coaxially arranged, which ensures that the high-speed rotational power can be transmitted with minimal angular deviation or axial offset. This effectively avoids additional friction loss and power consumption caused by transmission misalignment, flexural deformation or vibration, and ensures the accuracy, coaxiality and stability of power transmission, thereby maximizing the preservation of the high-speed kinetic energy output by the speed increaser 5.

[0037] In one embodiment, the first transmission component 6 is a coupling.

[0038] In the above embodiments, the first transmission component 6 is configured as a coupling, which can accurately and securely connect the speed increaser 5 and the wind turbine assembly 3, ensuring efficient and stable power transmission during the transmission process. This greatly reduces power loss and transmission failures caused by loose connections or deviations, improving the reliability and stability of the entire transmission system. Simultaneously, the coupling also has good buffering and shock absorption capabilities. During the operation of the vertical axis wind power generation device, it can effectively absorb and mitigate energy generated by instantaneous impacts or vibrations, reducing damage to the speed increaser 5 and the wind turbine assembly 3, and extending the service life of the vertical axis wind power generation device. Furthermore, the coupling has a relatively simple structure, is easy to install and maintain, and can save significant time and labor costs, ensuring the stable and efficient operation of the vertical axis wind power generation device.

[0039] In one embodiment, a second transmission component 7 is further included, which is disposed within the installation space 21 and coaxially arranged with the support tower 1; wherein the speed increaser 5 is connected to the input shaft of the generator 4 through the second transmission component 7.

[0040] In the above embodiment, since the second transmission component 7 is coaxially arranged with the support tower 1, the input shafts of the second transmission component 7, the speed increaser 5 and the generator 4 are all coaxially arranged, which ensures that the high-speed rotational power can be transmitted with minimal angular deviation or axial offset. This effectively avoids additional friction loss and parasitic power consumption caused by transmission misalignment, flexural deformation or vibration, and ensures the accuracy, coaxiality and stability of power transmission, thereby maximizing the preservation of the high-speed kinetic energy output by the speed increaser 5.

[0041] In one embodiment, the second transmission component 7 is a coupling.

[0042] In the above embodiment, the second transmission component 7 is configured as a coupling, which can accurately and securely connect the input shafts of the speed increaser 5 and the generator 4, ensuring efficient and stable power transmission during the transmission process. This greatly reduces power loss and transmission failures caused by loose connections or deviations, improving the reliability and stability of the entire transmission system. Simultaneously, the coupling also has good buffering and shock absorption capabilities. During the operation of the vertical axis wind power generator, it can effectively absorb and mitigate energy generated by instantaneous impacts or vibrations, reducing damage to the input shafts of the speed increaser 5 and the generator 4, and extending the service life of the vertical axis wind power generator. Furthermore, the coupling has a relatively simple structure, is easy to install and maintain, saving significant time and labor costs, and ensuring the stable and efficient operation of the vertical axis wind power generator.

[0043] In one embodiment, the wind turbine assembly 3 includes a main shaft 31 and an impeller 32; the main shaft 31 is coaxially arranged with the support tower 1 and its bottom end is connected to the first transmission member 6; the impeller 32 is connected to the main shaft 31.

[0044] In the above embodiments, by coaxially arranging the main shaft 31 with the supporting tower 1, the wind turbine assembly 3 experiences more balanced forces during operation, greatly enhancing the stability of the overall structure. This effectively reduces additional stress and vibration caused by eccentric rotation, thereby reducing the probability of wear and failure and extending the service life of the wind turbine assembly 3. The bottom end of the main shaft 31 is tightly connected to the first transmission component 6, ensuring that the wind energy captured by the wind turbine assembly 3 can be efficiently and smoothly transmitted to the subsequent transmission system, reducing energy loss in the transmission process and improving wind energy conversion efficiency. The impeller 32, connected to the main shaft 31, can fully capture wind forces of different directions and intensities, converting wind energy into mechanical energy that drives the main shaft 31 to rotate. This ensures that the wind turbine assembly 3 can operate stably and reliably under different wind conditions, guaranteeing the continuous and stable output of electrical energy from the entire vertical axis wind power generation device.

[0045] In one embodiment, the top end wall of the cylindrical housing 2 is provided with a mounting hole; the bottom end of the main shaft 31 is located in the mounting space 21 and is connected to the first transmission member 6; the top end of the main shaft 31 extends through the mounting hole to the outside of the cylindrical housing 2 and is connected to the impeller 32.

[0046] In the above embodiment, by opening a mounting hole on the top end wall of the cylindrical housing 2, a precise and reasonable passage is provided for the main shaft 31, ensuring that the bottom end of the main shaft 31 is located within the mounting space 21 and connected to the first transmission component 6; the top end of the main shaft 31 extends through the mounting hole to the outside of the cylindrical housing 2 and is connected to the impeller 32, so that the impeller 32 can be fully exposed to the external space, maximizing the capture of power sources such as wind energy, and ensuring the high efficiency of energy acquisition; the setting of the mounting hole reduces unnecessary connection links and energy loss, and improves the energy conversion efficiency of the entire device.

[0047] In one embodiment, the supporting tower 1 is a cement pole.

[0048] In the above embodiments, cement poles are used as the support tower 1 of the vertical axis wind power generation device. These poles possess high structural strength and good stability, capable of withstanding the enormous loads generated by the wind turbine assembly 3, generator 4, and other equipment during operation, as well as the complex and variable forces of the natural environment. This provides a reliable support foundation for the entire vertical axis wind power generation device, ensuring its safety and stability during long-term operation and reducing the risk of damage or even safety accidents caused by support structure failure. Furthermore, cement poles have excellent durability and corrosion resistance. Their material properties allow them to resist erosion from harsh environmental factors such as rainwater, humidity, and salt spray, making them less prone to rust and rot. This reduces the need for frequent maintenance and replacement, thereby lowering maintenance and operating costs throughout the entire lifecycle.

[0049] In specific implementations, the supporting tower 1 includes, but is not limited to, cement poles, metal poles, etc.

[0050] Preferably, the supporting tower 1 is an ultra-high performance concrete (UHPC) cement pole. Compared with ordinary concrete cement poles, its compressive strength reaches 100MPa-200MPa, its tensile strength is greater than or equal to 3.5MPa, and its bending strength is greater than or equal to 22MPa. Through steel fiber or hybrid fiber toughening, its impact resistance and fatigue resistance are enhanced. Compared with traditional concrete cement poles, the wall thickness is reduced by 50% and the weight is reduced by 40% to 50%.

[0051] In one embodiment, the generator 4 is a permanent magnet generator 4.

[0052] In the above embodiments, by setting the generator 4 as a permanent magnet generator 4, which utilizes permanent magnets to generate a magnetic field, no additional excitation device is required. This not only simplifies the structure of the generator 4 and reduces equipment failure points, but also greatly improves the reliability and stability of the generator 4, enabling it to operate continuously and stably in various complex and harsh environments, effectively reducing downtime and maintenance costs caused by equipment failure. In terms of efficiency, by eliminating the excitation current and reducing energy loss, the permanent magnet generator 4 has a higher energy conversion efficiency, capable of converting more mechanical energy such as wind energy into electrical energy, thereby increasing power generation and providing a strong guarantee for the efficient use of energy. Moreover, the permanent magnet generator 4 has a fast response speed, and can quickly adjust its output power when external conditions such as wind speed change rapidly, better adapting to the characteristics of large wind energy fluctuations, and enhancing the power generation system's ability to capture and utilize wind energy resources. In addition, the permanent magnet generator 4 is small in size and light in weight, making it easy to install and transport, reducing the difficulty and cost of engineering construction.

[0053] In one embodiment, the cylindrical box 2 is a cylindrical structure or a frustum-shaped structure.

[0054] In the above embodiments, the cylindrical box 2 is designed as a cylindrical structure or a frustum structure with a smooth and flowing surface, an aesthetically pleasing appearance, and no sharp edges or corners. When faced with natural external forces such as wind and rain, it can effectively reduce wind resistance and water resistance, reduce structural damage caused by external impacts, and improve the stability and durability of the cylindrical box 2 in complex environments.

[0055] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A vertical axis wind power generation device, characterized in that, include: Support tower (1), extending vertically; A cylindrical box (2) is coaxially arranged with the support tower (1), located on the top of the support tower (1), and has an installation space (21) inside; The wind turbine assembly (3) is coaxially arranged with the support tower (1) and is located at the top of the cylindrical box (2); The generator (4) is installed in the installation space (21), coaxially with the support tower (1), and fixedly installed on the top of the support tower (1); The speed increaser (5) is installed in the installation space (21) and is coaxially arranged with the support tower (1). Its two ends are respectively connected to the input shafts of the wind turbine assembly (3) and the generator (4).

2. The vertical axis wind power generation device according to claim 1, characterized in that, It also includes a first transmission component (6), which is disposed in the installation space (21) and coaxially disposed with the support tower (1); The speed increaser (5) is connected to the wind turbine assembly (3) via the first transmission component (6).

3. The vertical axis wind power generation device according to claim 2, characterized in that, The first transmission component (6) is a coupling.

4. The vertical axis wind power generation device according to claim 1, characterized in that, It also includes a second transmission component (7), which is disposed in the installation space (21) and coaxially disposed with the support tower (1); The speed increaser (5) is connected to the input shaft of the generator (4) via the second transmission component (7).

5. The vertical axis wind power generation device according to claim 4, characterized in that, The second transmission component (7) is a coupling.

6. The vertical axis wind power generation device according to claim 2, characterized in that, The wind turbine assembly (3) includes: The main shaft (31) is coaxially arranged with the support tower (1), and its bottom end is connected to the first transmission component (6); An impeller (32) is connected to the main shaft (31).

7. The vertical axis wind power generation device according to claim 6, characterized in that, The top end wall of the cylindrical box (2) is provided with an installation hole; the bottom end of the main shaft (31) is located in the installation space (21) and is connected to the first transmission member (6); the top end of the main shaft (31) extends through the installation hole to the outside of the cylindrical box (2) and is connected to the impeller (32).

8. The vertical axis wind power generation device according to any one of claims 1 to 7, characterized in that, The supporting tower (1) is a cement tower.

9. The vertical axis wind power generation device according to any one of claims 1 to 7, characterized in that, The generator (4) is a permanent magnet generator (4).

10. The vertical axis wind power generation device according to any one of claims 1 to 7, characterized in that, The cylindrical box (2) has a cylindrical or frustum-shaped structure.

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