A vertical axis wind turbine configured with a flow guiding frame

Abstract

The utility model relates to fan power generation technical field, especially the vertical axis wind power generation device of configuration guide frame is provided, including support frame and vertical axis wind wheel subassembly, the support frame includes guide frame and the two groups of annular frame of symmetrical setting up, each group annular frame includes concentric setting's inner ring and outer ring, the guide frame includes several guide plates, several guide plates are annularly arranged between the two groups of annular frame, and the circular ring space formed by several guide plates is used for installing vertical axis wind wheel subassembly. The utility model discloses an integrated structure by utilizing guide plate and annular frame, and guide plate plays the role of guiding and supporting simultaneously, and guide plate bears wind wheel subassembly as the supporting structure, reduces the material cost of support frame, and guide plate is gathered again to the wind wheel area by the annular distribution of guiding airflow, and guide plate directional guiding improves the wind energy utilization rate, especially suitable for low wind speed environment.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine power generation technology, and in particular to a vertical axis wind power generation device with a flow guide frame. Background Technology

[0002] With the increasing global demand for clean energy, wind power, as an important renewable energy source, has received widespread attention and development. Vertical axis wind turbines, with their unique advantages such as eliminating the need for wind-steering devices, simple structure, and easy maintenance, have secured a certain market share in the wind power sector.

[0003] However, existing vertical axis wind turbines still face many challenges in practical applications. Traditional vertical axis wind turbines often have separate designs for the deflector and support frame. The deflector and support frame are obviously insufficient in terms of structural stability. When the wind force is high, the deflector and support frame are prone to deformation, which cannot provide stable and reliable support for the wind turbine. This affects the normal operation of the entire wind turbine, reduces power generation efficiency, and may even cause safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a vertical axis wind power generation device with a flow guide frame, which can improve structural stability while enhancing the flow guide effect, thereby overcoming the problems existing in the prior art.

[0005] To achieve the purpose of this utility model, the following technical solution is adopted:

[0006] A vertical axis wind power generation device with a flow guide frame includes a support frame and a vertical axis wind turbine assembly. The support frame includes a flow guide frame and two sets of annular frames arranged symmetrically at the top and bottom. Each set of annular frames includes an inner ring and an outer ring arranged concentrically. The flow guide frame includes several flow guide plates, which are evenly distributed circumferentially between the two sets of annular frames. One end of the top surface of each flow guide plate is fixedly connected to the upper inner ring, and the other end of the top surface of each flow guide plate is fixedly connected to the upper outer ring. One end of the bottom surface of each flow guide plate is fixedly connected to the lower inner ring, and the other end of the bottom surface of each flow guide plate is fixedly connected to the lower outer ring. The annular space formed by the several flow guide plates is used to install the vertical axis wind turbine assembly.

[0007] A further improvement is that the upper and lower ends of two adjacent guide plates are fixedly connected by an iron sheet.

[0008] A further improvement is that both the inner and outer rings are formed by bending and welding galvanized square tubing.

[0009] A further improvement is that, among the plurality of said guide vanes, some of the outer ends of the guide vanes extend outward to form an extension plate, wherein the guide vanes with extension plates and the guide vanes without extension plates are arranged alternately in the circumferential direction.

[0010] A further improvement is that the guide plate is angled, and the extension plate is perpendicular to the center line of the annular space.

[0011] A further improvement is that multiple fixed brackets are evenly provided on the outer side of the outer ring along the circumference of the outer ring. The number of fixed brackets is the same as the number of guide plates with expansion plates. The fixed brackets are used to be fixedly connected to the expansion plates one by one.

[0012] A further improvement is that it also includes an upper isolation cover and a lower isolation cover, wherein the upper isolation cover is installed on the upper end face of the upper annular frame; and the lower isolation cover is installed on the lower end face of the lower annular frame.

[0013] A further improvement is that a first bridge is formed on both the upper and lower inner rings by a series of square tubes arranged in a crisscross pattern, and a bearing seat is installed at the center of the first bridge; the vertical axis impeller assembly includes a shaft and fan blades, the fan blades are mounted on the shaft, and the shaft is rotatably mounted between the upper and lower bearing seats.

[0014] A further improvement is that it also includes a motor support frame, which is installed at the bottom of the support frame for mounting the generator. The output end of the shaft is connected to the rotating shaft of the generator, and the fan blades are used to drive the shaft and the rotating shaft to rotate, thereby generating electricity.

[0015] A further improvement is that the motor support frame includes a small ring and a large ring arranged concentrically. The small ring and the large ring are fixedly connected by a second bridge formed by several square tubes arranged horizontally and vertically. A motor mounting base is installed at the center of the second bridge. Several support rods are vertically installed on the top surface of the large ring, and the other end of the support rods is fixedly connected to the bottom surface of the outer ring below. Several support rods are vertically installed on the top surface of the small ring, and the other end of the support rods is fixedly connected to the bottom surface of the inner ring below.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention uses two symmetrical sets of annular frames as a foundation, with several guide plates evenly fixed circumferentially between the two sets of annular frames. The guide plates connect both the inner and outer annular rings, forming an integrated structure. The enclosed annular space is used to install the vertical axis wind turbine assembly. By utilizing the integrated structure of the guide plates and annular frames, this invention allows the guide plates to simultaneously guide airflow and provide support. The guide plates, acting as a support structure, bear the wind turbine assembly, reducing the material cost of the support frame. Furthermore, the circumferential distribution of the guide plates guides airflow towards the wind turbine area, improving wind energy utilization, making it particularly suitable for low-wind-speed environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a vertical axis wind power generation device with a flow guide frame according to the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of a vertical axis wind power generation device with a flow guide frame according to the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of a vertical axis wind power generation device with a flow guide frame according to the present invention after removing the upper isolation cover;

[0021] Figure 4 This is a schematic diagram of the structure of a vertical axis wind power generation device with a flow guide frame according to the present invention after removing the motor support frame;

[0022] Figure 5 This is a schematic diagram of the structure of the motor support frame of this utility model;

[0023] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Inner ring; 2. Outer ring; 3. Guide plate; 4. Wind turbine assembly; 5. Iron sheet; 6. Extension plate; 7. Fixed bracket; 8. Upper isolation cover; 9. Lower isolation cover; 10. First bridge frame; 11. Bearing seat; 12. Motor support frame; 13. Generator; 14. Small ring; 15. Large ring; 16. Second bridge frame; 17. Support rod; 71. Bending horizontal tube; 72. Vertical tube; 73. Reinforcing rib. Detailed Implementation

[0026] 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, not all, of the embodiments of this utility model. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model; therefore, the drawings only show the components relevant to this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] It should be noted that when a component is said to be "mounted" on another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms “and” and “and” as used herein include any and all combinations of one or more of the associated listed items.

[0029] Please refer to the attached document. Figure 1 -Appendix Figure 6 This utility model embodiment proposes a vertical axis wind power generation device with a flow guide frame, including a support frame and a vertical axis wind turbine assembly 4. The support frame includes a flow guide frame and two sets of annular frames arranged symmetrically at the top and bottom. Each set of annular frames includes an inner ring 1 and an outer ring 2 arranged concentrically. The flow guide frame includes several flow guide plates 3, which are evenly distributed circumferentially between the two sets of annular frames. One end of the top surface of the flow guide plate 3 is fixedly connected to the upper inner ring 1, and the other end of the top surface of the flow guide plate 3 is fixedly connected to the upper outer ring 2. One end of the lower surface of the flow guide plate 3 is fixedly connected to the lower inner ring 1, and the other end of the lower surface of the flow guide plate 3 is fixedly connected to the lower outer ring 2. The annular space formed by the several flow guide plates 3 is used to install the vertical axis wind turbine assembly 4.

[0030] Specifically, the guide plate 3 can be fixed to the inner ring 1 and the outer ring 2 by welding, locking, bolting or other methods.

[0031] Understandably, this invention uses two symmetrical sets of annular frames as a foundation, and evenly fixes several guide plates 3 circumferentially between the two sets of annular frames. The guide plates 3 simultaneously connect the inner ring 1 and the outer ring 2, forming an integrated structure. The enclosed annular space is used to install the vertical axis wind turbine assembly 4. This invention utilizes the integrated structure formed by the guide plates 3 and the annular frames. The guide plates 3 simultaneously function as guides and supports, supporting the wind turbine assembly 4 and reducing the material cost of the support frame. Furthermore, the circumferential distribution of the guide plates 3 guides airflow towards the wind turbine area, thus improving wind energy utilization, making it particularly suitable for low-wind-speed environments.

[0032] In a preferred embodiment, the upper and lower ends of two adjacent guide plates 3 are fixedly connected by an iron sheet 5. The iron sheet 5 and the guide plate 3 can be fixed by welding or by bolts.

[0033] It is understandable that the rigid connection of the iron plate 5 enhances the cooperative force-bearing capacity between the deflector plates 3, preventing individual deflector plates 3 from bending or shifting under strong winds, and significantly improving the overall deformation resistance of the frame.

[0034] In a preferred embodiment, both the inner ring 1 and the outer ring 2 are formed by bending and welding galvanized square tubing.

[0035] Understandably, galvanized square tubes are low-cost, easy to process, and have simple bending and welding processes, making them suitable for mass production. The galvanized layer effectively resists outdoor wind and rain corrosion, extending the service life of the rings. The square tube structure provides stable support, ensuring that the ring frame does not deform under wind.

[0036] In a preferred embodiment, among the plurality of guide plates 3, some of the outer ends of the guide plates 3 extend outward to form an extension plate 6, wherein the guide plates 3 with extension plates 6 and the guide plates 3 without extension plates 6 are arranged alternately in the circumferential direction.

[0037] Specifically, in this embodiment, the number of guide plates 3 is 16, of which 8 guide plates 3 have outward extension plates 6 at their outer ends, i.e., the number of extension plates 6 is 8. An air-gathering channel is formed between two adjacent extension plates 6, and a flow-guiding channel is formed between two adjacent guide plates 3. Each air-gathering channel is connected to two flow-guiding channels.

[0038] It is understandable that by extending the outer end of part of the guide plate 3 to form the expansion plate 6, and by alternating between guide plates 3 with and without the expansion plate 6, the local windward area is increased by the expansion plate 6, guiding more airflow to converge towards the impeller area and enhancing the airflow capture capability at low wind speeds.

[0039] In this embodiment, the guide plate 3 is obliquely arranged (that is, the guide plate 3 is inclined at a preset angle relative to the radial direction of the annular space), and the extension plate 6 is perpendicular to the center line of the annular space.

[0040] It is understood that the tilt angle of the guide vane 3 can be set according to actual needs, and this embodiment does not impose specific limitations, as long as it is reasonable. The tilting setting of the guide vane 3 ensures that when the airflow leaves the guide vane 3, it can impact the wind turbine blades of the vertical axis wind turbine assembly 4 with the best tangential angle of attack, generating the maximum rotational torque, while minimizing the impact resistance on the back of the blades.

[0041] In a preferred embodiment, a plurality of fixed brackets 7 are uniformly provided on the outer side of the outer ring 2 along the circumference of the outer ring 2. The number of fixed brackets 7 is the same as the number of guide plates 3 with expansion plates 6 (8). The fixed brackets 7 are used to be fixedly connected to the expansion plates 6 one by one.

[0042] Specifically, the top surface of the upper fixed bracket 7 is flush with the top surface of the upper outer ring 2, and the bottom surface of the lower fixed bracket 7 is flush with the bottom surface of the lower outer ring 2.

[0043] Specifically, the fixed bracket 7 includes a curved horizontal tube 71 and a vertical tube 72. The curvature of the curved horizontal tube 71 is adapted to the curvature of the outer side surface of the outer ring 2. The curved horizontal tube 71 is fitted and fixed to the outer side surface of the outer ring 2. One end of the vertical tube 72 is vertically fixed to the middle of the curved horizontal tube 71. The vertical tube 72 is fixedly connected to the top / bottom surface of the extension plate 6. Reinforcing ribs 73 are respectively connected between the two ends of the curved horizontal tube 71 and the tube body of the vertical tube 72.

[0044] Understandably, the fixed bracket 7 can reinforce the connection between the extension plate 6 and the outer ring 2, ensuring that the extension plate 6 does not loosen or deform under strong winds; the load is evenly transferred to the ring frame, improving the overall structural reliability.

[0045] In this embodiment, an upper isolation cover 8 and a lower isolation cover 9 are also included. The upper isolation cover 8 is installed on the upper end face of the upper annular frame, and the lower isolation cover 9 is installed on the lower end face of the lower annular frame. The projected surfaces of the upper isolation cover 8 and the lower isolation cover 9 are octagonal.

[0046] Understandably, the upper isolation cover 8 and the lower isolation cover 9 cover the end face of the ring frame, forming a closed space to block the airflow from escaping from the upper and lower ends of the frame, reduce airflow energy loss, improve airflow efficiency, and at the same time physically isolate foreign objects such as leaves and dust from the outside.

[0047] In a preferred embodiment, a first bridge frame 10 is formed on each of the upper and lower inner rings 1 by a plurality of square tubes arranged in a crisscross pattern. The first bridge frame 10 is generally cross-shaped, and a bearing seat 11 is installed at the center of the first bridge frame 10. The vertical axis wind turbine assembly 4 includes a shaft and a fan blade. The fan blade is installed on the shaft, and the shaft is rotatably installed between the upper and lower bearing seats 11.

[0048] Understandably, the inner ring 1 is formed by several square tubes crisscrossing to form the first bridge frame 10. The rigid structure of the first bridge frame 10 is used to install the bearing seat 11 at the center, so that the shaft passes through the bearing seat 11, thereby achieving stable rotational support for the wind turbine assembly 4.

[0049] In a preferred embodiment, the device further includes a motor support frame 12, which is installed at the bottom of the support frame for mounting the generator 13. The output end of the shaft is connected to the rotating shaft of the generator 13, and the fan blades are used to drive the shaft and rotating shaft to rotate, thereby generating electricity from the generator 13.

[0050] The motor support frame 12 includes a small ring 14 and a large ring 15 arranged concentrically. The small ring 14 and the large ring 15 are fixedly connected by a second bridge 16 formed by several square tubes arranged horizontally and vertically. The second bridge 16 is cross-shaped in general. A motor mounting seat is installed at the center of the second bridge 16. Several support rods 17 are vertically installed on the top surface of the large ring 15. The other end of the support rods 17 is fixedly connected to the bottom surface of the outer ring 2 below. Several support rods 17 are vertically installed on the top surface of the small ring 14. The other end of the support rods 17 is fixedly connected to the bottom surface of the inner ring 1 below.

[0051] Specifically, the number of holes on the upper part of the large ring 15 is 16, and the number of holes on the upper part of the small ring 14 is 8.

[0052] Understandably, the motor support frame 12 fixes the generator 13, and the wind turbine blades drive the shaft to rotate. Through the connection between the shaft and the generator 13's rotating shaft, wind energy is converted into mechanical energy, which is then converted into electrical energy by the generator 13, forming a complete energy conversion chain. The motor support frame 12 forms a stable structure through the small ring 14, the large ring 15, and the second bridge frame 16, and the overall structural stability is enhanced through the support rod 17 and the inner ring 1 and outer ring 2.

[0053] Alternatively, an identical vertical axis wind power generation unit can be stacked on top of the existing vertical axis wind power unit.

[0054] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered as within the scope of this specification. The above embodiments only illustrate specific implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A vertical axis wind power generation device with a flow guide frame, characterized in that, The device includes a support frame and a vertical axis impeller assembly. The support frame includes a flow guide frame and two sets of annular frames arranged symmetrically. Each set of annular frames includes a concentric inner ring and an outer ring. The flow guide frame includes several flow guide plates, which are evenly distributed circumferentially between the two sets of annular frames. One end of the top surface of each flow guide plate is fixedly connected to the upper inner ring, and the other end is fixedly connected to the upper outer ring. One end of the bottom surface of each flow guide plate is fixedly connected to the lower inner ring, and the other end is fixedly connected to the lower outer ring. The annular space formed by the several flow guide plates is used to install the vertical axis impeller assembly.

2. A vertical axis wind power generation device with a flow guide frame according to claim 1, characterized in that, The upper and lower ends of two adjacent guide plates are fixedly connected by an iron sheet.

3. A vertical axis wind power generation device with a flow guide frame according to claim 1, characterized in that, Both the inner and outer rings are formed by bending and welding galvanized square tubing.

4. A vertical axis wind power generation device with a flow guide frame according to claim 1, characterized in that, In a plurality of the aforementioned guide vanes, some of the outer ends of the guide vanes extend outward to form an extension plate, wherein guide vanes with extension plates and guide vanes without extension plates are arranged alternately in the circumferential direction.

5. A vertical axis wind power generation device with a flow guide frame according to claim 4, characterized in that, The guide plate is angled, and the extension plate is perpendicular to the center line of the annular space.

6. A vertical axis wind power generation device with a flow guide frame according to claim 4, characterized in that, The outer surface of the outer ring is provided with a plurality of fixed brackets evenly distributed along the circumference of the outer ring. The number of fixed brackets is the same as the number of guide plates with expansion plates. The fixed brackets are used to be fixedly connected to the expansion plates one by one.

7. A vertical axis wind power generation device with a flow guide frame according to claim 1, characterized in that, It also includes an upper isolation cover and a lower isolation cover, wherein the upper isolation cover is installed on the upper end face of the upper annular frame; and the lower isolation cover is installed on the lower end face of the lower annular frame.

8. A vertical axis wind power generation device with a flow guide frame according to claim 1, characterized in that, The upper and lower inner rings are each formed by a first bridge frame through a series of square tubes arranged in a crisscross pattern. A bearing seat is installed at the center of the first bridge frame. The vertical axis wind turbine assembly includes a shaft and a fan blade. The fan blade is mounted on the shaft, and the shaft is rotatably mounted between the upper and lower bearing seats.

9. A vertical axis wind power generation device with a flow guide frame according to claim 8, characterized in that, It also includes a motor support frame, which is installed at the bottom of the support frame for mounting the generator. The output end of the shaft is connected to the rotating shaft of the generator, and the fan blades are used to drive the shaft and the rotating shaft to rotate, thereby generating electricity.

10. A vertical axis wind power generation device with a flow guide frame according to claim 9, characterized in that, The motor support frame includes a small ring and a large ring arranged concentrically. The small ring and the large ring are fixedly connected by a second bridge formed by several square tubes arranged horizontally and vertically. A motor mounting base is installed at the center of the second bridge. Several support rods are vertically installed on the top surface of the large ring. The other end of the support rods is fixedly connected to the bottom surface of the outer ring below. Several support rods are vertically installed on the top surface of the small ring. The other end of the support rods is fixedly connected to the bottom surface of the inner ring below.

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