A flexible low wind speed vertical axis wind power generation device

Abstract

This invention relates to the field of wind power generation technology and discloses a flexible low-wind-speed vertical axis wind power generation device, including a support column and a generator. A rotating rod is installed at the input end of the generator. A turntable is fixedly connected to both the top and bottom ends of the rotating rod. A support frame is fixedly connected to the outer side of the turntable. Five shaping frames are fixedly connected to the outer sides of the two support frames. Main blades are fixedly connected to the outer sides of the shaping frames. An auxiliary power generation component is disposed on the outer side of the rotating rod. The auxiliary power generation component includes two semi-cylinders. The inner sides of the semi-cylinders are fitted to the outer side of the rotating rod, and locking blocks are fixedly connected to the inner sides of the semi-cylinders. In this invention, the generator and flange are detachably connected using bolts. The mounting post at the bottom of the flange precisely matches the mounting groove at the top of the support column, forming a quick-locking structure with the help of a connecting rod, locking cap, and spring assembly. Compared with traditional non-detachable welding or multi-bolt assembly methods, this significantly shortens the assembly time.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a flexible low-wind-speed vertical axis wind power generation device. Background Technology

[0002] With the global energy structure shifting towards cleaner and renewable energy, wind power, as a mature renewable energy source, is seeing its application scenarios continuously expand. Compared to high-wind-speed areas, low-wind-speed areas (such as urban suburbs, plains and farmland, and coastal low-wind zones) are more widely distributed and cover a larger population, making the demand for suitable wind power equipment increasingly urgent. Vertical axis wind power equipment has become an important choice for wind power generation in low-wind-speed areas due to its strong adaptability to wind direction, low noise, and small installation space requirements. With technological advancements, the market is increasingly demanding greater flexibility, efficiency, and ease of maintenance for vertical axis wind power equipment, especially in terms of ease of installation, stability of power generation efficiency at low wind speeds, and adaptability to harsh winter environments, requiring further breakthroughs to meet practical application needs.

[0003] Existing low-wind-speed vertical axis wind power generation equipment typically employs a fixed support structure and power generation component design in terms of mechanical technology and structural principles. The overall installation of the equipment largely relies on welding or multiple bolt connections. Welding requires high-temperature on-site work, while bolt connections require tightening multiple bolts one by one to ensure structural stability. The blades of the power generation mechanism are mostly made of rigid materials, and the force exerted by the blades drives the rotor to rotate, which in turn drives the generator to produce electricity. Although some equipment includes auxiliary power generation components, these are mostly fixed installations, making it difficult to flexibly adjust according to actual airflow conditions. In terms of de-icing design, traditional equipment relies on manual de-icing or electric heating de-icing methods. Manual de-icing requires high-altitude work, which is unsafe and inefficient. Electric heating de-icing requires laying complex heating circuits, resulting in high energy consumption and insufficient protection for the circuits, making them prone to failures due to circuit wear.

[0004] However, existing technologies have many problems in practical applications, making it difficult to meet the demands for efficient, convenient, and stable power generation. In equipment installation scenarios, traditional welding fixation methods prevent disassembly, requiring destructive disassembly for later maintenance or repositioning. Multi-bolt connections require significant time for bolt assembly and calibration, especially in remote, low-wind-speed areas, where installers must carry numerous tools and perform repeated operations, significantly increasing installation and time costs. This is due to the lack of flexible, rapid locking mechanisms in the installation structure design, resulting in over-reliance on rigid connections. In alternating low-wind-speed and no-wind scenarios, traditional rigid blades have poor wind capture capabilities, making it difficult to drive stable equipment rotation. They cannot flexibly activate or deactivate based on updraft and downdraft conditions, leading to a significant drop in power generation capacity during windless periods. The root cause lies in the blade materials and structural design not being adequately adapted to low-wind-speed aerodynamic requirements, and the lack of modular, detachable design for auxiliary components. In low-temperature winter scenarios, high-altitude blades are prone to icing. Traditional manual de-icing is inefficient and unsafe, while electric heating de-icing is energy-intensive and lacks adequate circuit protection, often leading to malfunctions due to circuit wear. This causes a sharp drop in the equipment's power generation efficiency in winter because the de-icing mechanism does not take into account the equipment's own power generation resources, and the design of the circuit fixing and protection structure is unreasonable, failing to balance de-icing effectiveness with safety and energy efficiency. Therefore, this invention provides a flexible low-wind-speed vertical axis wind power generation device to address the shortcomings of existing technologies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a flexible low-wind-speed vertical axis wind power generation device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A flexible low-wind-speed vertical axis wind power generation device, comprising a support column and a generator. A rotating rod is installed at the input end of the generator. A turntable is fixedly connected to both the top and bottom ends of the rotating rod. A support frame is fixedly connected to the outer side of the turntable. Five shaping frames are fixedly connected to the outer sides of the two support frames. Main blades are fixedly connected to the outer sides of the shaping frames. An auxiliary power generation component is disposed on the outer side of the rotating rod. Five de-icing mechanisms are disposed on the outer side of the support frames. Each de-icing mechanism includes two housings and a vibration motor. The housings are fitted over the support frames. The vibration motor is installed on one side of the main blade. A wire is fixedly connected to the input end of the vibration motor. One end of the wire is electrically connected to the inside of the generator. An inner groove is formed on the inner side of the housing. The outer side of the wire simultaneously contacts the inner side of the support frame and the inner side of the inner groove. Two binding grooves are formed on the outer side of the housing. A [missing information - likely a design feature] is formed at the top of the support column. The assembly slot has two through-holes in its inner wall. A flange is bolted to the bottom of the generator, and an assembly column is fixedly connected to the bottom of the flange. The assembly column has a through-hole inside, and its outer side is slidably connected to the inner side of the assembly slot. The through-hole communicates with the two connection holes. A connecting rod is slidably connected inside the assembly column, and its outer side is slidably connected to the through-hole and the inner sides of the two connection holes. One end of the connecting rod is fixedly connected to an end seat, and a spring is sleeved on the outside of the connecting rod. One end of the spring contacts the outer side of the support column, and the other end of the spring is fixedly connected to a sliding ring. An L-shaped groove is formed at the other end of the connecting rod, and a locking groove is formed on the inner side of the L-shaped groove. A locking cap is sleeved on the other end of the connecting rod, and a combination groove is formed on one side of the locking cap. The other end of the connecting rod engages with the inner side of the combination groove. A protruding post is fixedly connected to the inner side of the combination groove, and its outer side is slidably connected to the inner side of the L-shaped groove.

[0007] Preferably, the auxiliary power generation component includes two semi-cylinders, the inner side of the semi-cylinders is attached to the outer side of the rotating rod, a locking block is fixedly connected to the inner side of the semi-cylinders, and two grooves are formed on the outer side of the rotating rod, with the outer side of the locking block engaging inside the grooves.

[0008] Preferably, a plurality of secondary blades are fixedly connected to the outer side of the semi-cylinder, and two ear plates are fixedly connected to the top and bottom of each secondary blade, with plate holes opened inside the ear plates.

[0009] This invention provides a flexible, low-wind-speed vertical-axis wind power generation device. It has the following beneficial effects:

[0010] 1. The equipment of this invention is easy and flexible to install, and has strong stability. The bottom of the support column is fixed to the external support column by welding, ensuring the overall installation stability. The generator and the flange are detachably connected by bolts. The mounting column at the bottom of the flange and the mounting groove at the top of the support column are precisely matched. With the help of connecting rods, locking caps and spring assemblies, a quick locking structure is formed. Compared with the traditional non-detachable welding or multi-bolt assembly method, the assembly time is greatly shortened. At the same time, the disassembly and assembly process is more flexible, which facilitates the later maintenance or equipment position adjustment, and effectively improves the convenience of equipment installation and operation and maintenance.

[0011] 2. The device of this invention has wide adaptability and high efficiency in power generation. The main blade adopts flexible composite material and arc design, which meets the aerodynamic requirements of low wind speed. It can drive the support frame to rotate and drive the generator to generate electricity under weak wind. The auxiliary blade of the auxiliary power generation mechanism has a streamlined structure, which can use the airflow to drive the rotating rod to rotate, making up for the power generation gap in windless environment. Moreover, the semi-cylinder where the auxiliary blade is located is detachable and can be flexibly disassembled and assembled according to actual needs, further expanding the applicable scenarios of the device and improving the power generation efficiency in different environments.

[0012] 3. The equipment of this invention has high reliability in winter operation and ensures power generation efficiency. The vibration motor of the de-icing mechanism can obtain generator current through wires and generate a suitable vibration frequency during operation, which breaks the ice layer on the surface of the main blade. The cover is made of shape memory metal material, which can be tightly fastened to the outside of the support frame to fix the wires. The fixing effect can also be enhanced by bundling to avoid wire wear. At the same time, the vibration motor can be automatically started and stopped by the controller, which effectively solves the problem of kinetic energy loss caused by icing of the main blades in winter and ensures stable operation and power generation efficiency of the equipment in winter. Attached Figure Description

[0013] Figure 1 This is a front perspective view of the present invention;

[0014] Figure 2 This is a top perspective view of the present invention;

[0015] Figure 3 This is a schematic diagram of the auxiliary power generation component of the present invention;

[0016] Figure 4 This is a schematic diagram of the de-icing mechanism of the present invention;

[0017] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0018] Figure 6 This is a schematic diagram of the locking cap of the present invention;

[0019] Figure 7 This is a schematic diagram of the connecting rod of the present invention;

[0020] Figure 8 This is a schematic diagram of the protruding post of the present invention.

[0021] Among them, 1. Support column; 2. Generator; 3. Rotating rod; 4. Turntable; 5. Support frame; 6. Shaping frame; 7. Main blade; 8. Auxiliary power generation component; 801. Semi-cylinder; 802. Secondary blade; 803. Ear plate; 804. Plate hole; 805. Locking block; 9. De-icing mechanism; 901. Vibration motor; 902. Wire; 903. Cover; 904. Inner groove; 905. Bundling groove; 10. Connecting hole; 11. Assembly groove; 12. Flange; 13. Assembly column; 14. Perforation; 15. Connecting rod; 16. End seat; 17. Spring; 18. Sliding ring; 19. L-shaped groove; 20. Locking groove; 21. Locking cap; 22. Combination groove; 23. Protruding column. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a flexible low-wind-speed vertical axis wind power generation device, including a support column 1 and a generator 2. A rotating rod 3 is installed at the input end of the generator 2. A turntable 4 is fixedly connected to the top and bottom ends of the rotating rod 3. A support frame 5 is fixedly connected to the outside of the turntable 4. Five shaping frames 6 are fixedly connected to the outside of the two support frames 5. A main blade 7 is fixedly connected to the outside of the shaping frames 6. An auxiliary power generation component 8 is provided on the outside of the rotating rod 3. The auxiliary power generation component 8 includes two semi-cylinders 801. The inner side of the semi-cylinders 801 is attached to the outside of the rotating rod 3. A locking block 805 is fixedly connected to the inner side of the semi-cylinders 801. Two grooves are opened on the outside of the rotating rod 3. The outside of the locking block 805 is engaged with the inside of the grooves. Multiple secondary blades 802 are fixedly connected to the outside of the semi-cylinders 801. Two ear plates 803 are fixedly connected to the top and bottom of the secondary blades 802. Plate holes 804 are opened inside the ear plates 803. Five de-icing mechanisms 9 are provided on the outside of the support frame 5.

[0024] The de-icing mechanism 9 includes two housings 903 and a vibration motor 901. The housings 903 are fitted over the outside of the support frame 5. The vibration motor 901 is installed on one side of the main blade 7. The input end of the vibration motor 901 is fixedly connected to a wire 902. One end of the wire 902 is electrically connected to the inside of the generator 2. The inner side of the housing 903 is provided with an inner groove 904. The outer side of the wire 902 is in contact with both the support frame 5 and the inner side of the inner groove 904. The outer side of the housing 903 is provided with two binding grooves 905.

[0025] The top of the support column 1 has an assembly groove 11, and the inner wall of the assembly groove 11 has two connecting holes 10. The bottom of the generator 2 is bolted to a flange 12, and the bottom of the flange 12 is fixedly connected to an assembly column 13. The assembly column 13 has a through hole 14 inside, and the outer side of the assembly column 13 is slidably connected to the inner side of the assembly groove 11. The through hole 14 communicates with the two connecting holes 10. A connecting rod 15 is slidably connected inside the assembly column 13. The outer side of the connecting rod 15 is slidably connected to the through hole 14 and the inner side of the two connecting holes 10. One end of the connecting rod 15 is fixedly connected to... The connecting rod 15 is fitted with an end seat 16. A spring 17 is sleeved on the outside of the connecting rod 15. One end of the spring 17 is in contact with the outside of the support column 1. A sliding ring 18 is fixedly connected to the other end of the spring 17. An L-shaped groove 19 is opened on the other end of the connecting rod 15. A slot 20 is opened on the inner side of the L-shaped groove 19. A locking cap 21 is sleeved on the other end of the connecting rod 15. A combination groove 22 is opened on one side of the locking cap 21. The other end of the connecting rod 15 is engaged with the inner side of the combination groove 22. A protruding post 23 is fixedly connected to the inner side of the combination groove 22. The outer side of the protruding post 23 is slidably connected to the inner side of the L-shaped groove 19.

[0026] Specifically, firstly, during the overall equipment installation phase, the bottom of the support column 1 is fixed to the external support column by welding to ensure the installation height and stability of the equipment; the bottom of the generator 2 is bolted to the flange 12, specifically using at least four M12 bolts for detachable fixing. The mounting column 13 at the bottom of the flange 12 and the mounting groove 11 at the top of the support column 1 have a clearance fit. After the mounting column 13 is inserted into the mounting groove 11, it must be ensured that the through hole 14 inside it is completely aligned with the two connecting holes 10 on the inner wall of the mounting groove 11. Then, the connecting rod 15 is inserted from one side of the connecting hole 10, passing through the through hole 14 and the other side of the connecting hole 10 in sequence. The diameter of the end seat 16 at one end of the connecting rod 15 is larger than the inner diameter of the connecting hole 10 to prevent... When the spring 17 is initially pre-compressed, one end of the spring 17 is in contact with the outer end face of the support column 1, and the other end is fixed to the sliding ring 18 by welding. The sliding ring 18 and the connecting rod 15 are in sliding fit. When the locking cap 21 is put on the other end of the connecting rod 15, the protrusion 23 on the inner side of the combination groove 22 needs to slide into the vertical section of the L-shaped groove 19 first. Rotate the locking cap 21 to make the protrusion 23 enter the horizontal section of the L-shaped groove 19. At this time, the rebound force of the spring 17 pushes the sliding ring 18, thereby driving the locking cap 21 to move towards the support column 1, so that the protrusion 23 is stably locked into the slot 20, realizing the quick locking of the assembly column 13 and the support column 1. Compared with the traditional welding or multi-bolt connection, this connection method can reduce the assembly time.

[0027] In the power generation mechanism, the rotating rod 3 is keyed to the input end of the generator 2. The top and bottom of the rotating rod 3 are fixed by welding. The support frame 5 on the outside of the rotating plate 4 is fixed to the rotating plate 4 by bolts. The five fixed frames 6 on the outside of the two support frames 5 are arc-shaped steel structures, which are fully welded to the support frames 5. The main blades 7 on the outside of the fixed frames 6 are made of flexible composite materials (such as glass fiber reinforced resin) and are bonded to the fixed frames 6 by epoxy resin adhesive. The curved design of the main blades 7 meets the aerodynamic requirements of low wind speed, ensuring that the support frames 5 can be rotated at low wind speeds, thereby driving the generator 2 to generate electricity through the rotating rod 3.

[0028] The locking blocks 805 on the inner side of the two semi-cylinders 801 of the auxiliary power generation component 8 are interference-fitted with the groove on the outer side of the rotating rod 3 to achieve circumferential positioning of the semi-cylinders 801 and the rotating rod 3. Multiple auxiliary blades 802 on the outer side of the semi-cylinders 801 are connected to the semi-cylinders 801 by an integral molding process. The ear plates 803 at the top and bottom of the auxiliary blades 802 are fixed by welding. When the two semi-cylinders 801 are connected, they need to be fastened by bolts passing through the plate holes 804 of the ear plates 803 on both sides. The auxiliary blades 802 have a streamlined structure and can drive the semi-cylinders 801 and the rotating rod 3 to rotate under the action of the airflow (such as the rising of hot air), which improves the power generation capacity of the equipment in windless environments. The detachable design of the semi-cylinders 801 makes it easy to disassemble and assemble flexibly according to seasonal needs.

[0029] Regarding the de-icing mechanism 9, the vibratory motor 901 is bolted to the non-windward side of the main blade 7. One end of the wire 902 at the input end of the vibratory motor 901 is connected to the generator 2. The arrangement of the wire 902 needs to be close to the surface of the support frame 5 and embedded in the inner groove 904 inside the cover 903. The cover 903 is made of shape memory metal material (such as nickel-titanium alloy) and can be tightly fastened to the outside of the support frame 5. The inner wall of the inner groove 904 is provided with a rubber buffer layer to prevent the wire 902 from being worn. At the same time, the wire 902 can be fixed in the inner groove 904 by wire clamps. The two binding slots 905 on the outside of the cover 903 can be bound with stainless steel cable ties to further enhance the fixing effect between the cover 903 and the support frame 5. When ice forms in winter, the current generated by the generator 2 is transmitted to the vibratory motor 901 through the wire 902. When the vibratory motor 901 is working, it generates a vibration frequency of 50-100Hz, which forces the ice layer on the surface of the main blade 7 to vibrate and break, effectively ensuring the power generation efficiency in winter.

[0030] Working principle: First, weld the bottom of the support column 1 to other columns to ensure the height of the equipment. Then, use bolts to install the flange 12 on the bottom of the generator 2. Next, insert the assembly column 13 into the assembly groove 11. Then, pass the connecting rod 15 through the connecting hole 10 and the through hole 14. Then, put the locking cap 21 on one end of the connecting rod 15 so that the protruding column 23 slides into the L-shaped groove 19. Rotate the locking cap 21, and then the thrust of the spring 17 will cause the sliding ring 18 to push the locking cap 21 back, and the protruding column 23 will be stably locked into the slot 20. In this way, the entire equipment is installed. Compared with the traditional welding fixation that is not detachable or multiple bolt assembly, it is more flexible and convenient.

[0031] The five main blades 7 can handle wind from any direction, and the curved design of the main blades 7 can be driven by a small breeze to rotate the support frame 5, thereby enabling the generator 2 to generate electricity. In the absence of wind, if there is an up-and-down airflow, the auxiliary blades 802 can rotate, thereby causing the rotating rod 3 to rotate. The two semi-cylinders 801 are assembled and connected by bolts passing through the plate holes 804, and can also be disassembled when not in use, allowing for flexible application according to needs.

[0032] In winter, the main blade 7 at high altitude is prone to icing due to cold air, which can damage its kinetic energy and affect power generation efficiency. Therefore, the current generated in the generator 2 can be supplied to five vibration motors 901 through five wires 902, which in turn causes the main blade 7 to vibrate, causing the ice attached to the surface of the main blade 7 to break and achieve the de-icing effect. The cover 903 has a certain memory capacity and can be fastened to the outside of the support frame 5 to fix the wires 902. It can also tie ropes at the binding groove 905 to further strengthen the fixing effect.

Claims

1. A flexible low-wind-speed vertical axis wind power plant comprising a support column (1) and a generator (2), characterized in that, The input end of the generator (2) is equipped with a rotating rod (3). A turntable (4) is fixedly connected to both the top and bottom ends of the rotating rod (3). A support frame (5) is fixedly connected to the outer side of the turntable (4). Five shaping frames (6) are fixedly connected to the outer sides of the two support frames (5). A main blade (7) is fixedly connected to the outer side of the shaping frame (6). An auxiliary power generation component (8) is provided on the outer side of the rotating rod (3). Five de-icing mechanisms (9) are provided on the outer side of the support frames (5). Each de-icing mechanism (9) includes two housings (903) and a vibration motor (901). The housings (903) are fitted onto the support frames (5). Externally, the vibration motor (901) is installed on one side of the main blade (7). The input end of the vibration motor (901) is fixedly connected to a wire (902). One end of the wire (902) is electrically connected to the inside of the generator (2). An inner groove (904) is provided on the inner side of the cover (903). The outer side of the wire (902) is in contact with both the support frame (5) and the inner side of the inner groove (904). Two binding grooves (905) are provided on the outer side of the cover (903). An assembly groove (11) is provided on the top of the support column (1). Two connecting holes (10) are provided through the inner wall of the assembly groove (11). The generator (2) The bottom of the assembly column (11) is bolted to a flange (12). The bottom of the flange (12) is fixedly connected to an assembly column (13). The assembly column (13) has a through hole (14) inside. The outer side of the assembly column (13) is slidably connected to the inner side of the assembly groove (11). The through hole (14) is connected to two connecting holes (10). The inside of the assembly column (13) is slidably connected to a connecting rod (15). The outer side of the connecting rod (15) is slidably connected to the through hole (14) and the inner side of the two connecting holes (10). One end of the connecting rod (15) is fixedly connected to an end seat (16). A spring (1) is sleeved on the outside of the connecting rod (15). 7) One end of the spring (17) is in contact with the outside of the support column (1), and the other end of the spring (17) is fixedly connected to a sliding ring (18). The other end of the connecting rod (15) is provided with an L-shaped groove (19), and the inner side of the L-shaped groove (19) is provided with a slot (20). The other end of the connecting rod (15) is fitted with a locking cap (21), and one side of the locking cap (21) is provided with a combination groove (22). The other end of the connecting rod (15) is engaged with the inner side of the combination groove (22). The inner side of the combination groove (22) is fixedly connected to a protruding post (23), and the outer side of the protruding post (23) is slidably connected to the inner side of the L-shaped groove (19).

2. A flexible low wind speed vertical axis wind turbine as claimed in claim 1 wherein, The auxiliary power generation component (8) includes two semi-cylinders (801). The inner side of the semi-cylinders (801) is attached to the outer side of the rotating rod (3). A locking block (805) is fixedly connected to the inner side of the semi-cylinders (801). Two grooves are opened on the outer side of the rotating rod (3). The outer side of the locking block (805) is engaged with the inside of the groove.

3. A flexible low wind speed vertical axis wind turbine as claimed in claim 2, wherein, Multiple secondary blades (802) are fixedly connected to the outer side of the semi-cylinder (801). Two ear plates (803) are fixedly connected to the top and bottom of the secondary blades (802). The ear plates (803) have plate holes (804) inside.

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