A multi-blade wind power generator

Abstract

The application discloses a kind of multi-blade wind-driven generators, including pedestal, blade assembly and generator, the pedestal top end is equipped with tower pole assembly, the tower pole assembly top end is equipped with rotating seat, the rotating seat rotation is equipped with mounting seat, the mounting seat is equipped with drive assembly, drive itself rotates, the top end of the mounting seat is equipped with gear box, the gear box two ends are equipped with blade assembly and generator respectively, the gear box is located generator outside and is equipped with motor cover, the motor cover is equipped with air inlet and air outlet;The generator includes generator main body, the motor shaft of the generator main body two ends are equipped with first radiating blade and second radiating blade respectively, first radiating blade and second radiating blade are located at the two ends of generator main body respectively, the generator main body is provided with the channel that air current penetrates.This application, heat dissipation efficiency is greatly improved, can effectively avoid generator due to overheating influence operating stability and service life.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically a multi-blade wind turbine. Background Technology

[0002] The principle of wind power generation is to use wind power to drive the wind turbine blades to rotate, and then use a speed increaser to increase the rotation speed to drive the generator to generate electricity. At present, most wind energy conversion systems use horizontal axis wind turbines, which have three blades installed on a horizontal axis. They generate electricity by relying on wind power and the slope of the blades' windward side to generate thrust, which drives the generator to rotate.

[0003] The existing announcement number CN116950847B discloses a multi-bladed wind turbine generator, which relates to the field of wind power generation technology. It includes a base plate, a support mounted on the upper end of the base plate, and a working shell mounted on the upper end of the support. A generator is housed in a working cavity within the working shell. The generator's motor shaft is connected to a rotating shaft via a speed-increasing and heat-dissipating mechanism. The rotating shaft passes through the front end of the working shell and is fixedly connected to a rotating cylinder. The working shell and the rotating cylinder are rotatably connected. The rotating cylinder has an internal cavity containing a motor, which is fixedly mounted therein. The motor is fixedly connected to a bevel gear. Several bevel gears (numbering three) are evenly meshed around the bevel gear in a circumferential direction. Each bevel gear is fixedly connected to a fixed shaft. The fixed shaft passes through the side end of the cavity and is fixedly connected to the blades. The speed-increasing and heat-dissipating mechanism combines speed-increasing and heat-dissipating functions, saving space and simultaneously dissipating heat from the generator while speeding up the motor shaft.

[0004] While existing technologies have achieved some degree of heat dissipation for generators, their effectiveness is limited. The technical problem we need to solve is how to further improve the heat dissipation effect of the equipment without adding additional power-consuming equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-bladed wind turbine generator to solve the problem of limited heat dissipation effect in the prior art, and how to further improve the heat dissipation effect of the equipment without adding additional power-consuming equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-blade wind turbine generator, comprising a base, blade assemblies, and a generator, wherein a tower assembly is mounted on the top of the base, a rotating base is mounted on the top of the tower assembly, a mounting base is rotatably mounted on the rotating base, a drive assembly for driving its own rotation is mounted on the mounting base, a gearbox is mounted on the top of the mounting base, blade assemblies and a generator are respectively mounted on both ends of the gearbox, a motor cover is mounted on the outside of the gearbox, and the motor cover has an air inlet and an air outlet;

[0007] The generator includes a generator body, and a first heat dissipation blade and a second heat dissipation blade are respectively installed at both ends of the motor shaft of the generator body. The first heat dissipation blade and the second heat dissipation blade are respectively located at both ends of the generator body, and the generator body is provided with a channel for airflow.

[0008] Preferably, the motor cover includes a motor cover body, a connecting plate is installed on one side of the motor cover body, the connecting plate is fixed to the gearbox housing, the bottom of the connecting plate is an open structure, the top of the connecting plate is inclined downwards, and a filter screen is installed at the air inlet of the motor cover.

[0009] Preferably, the motor shaft meshes with the gearbox gears via gears, and the first and second heat dissipation blades rotate in the same direction.

[0010] Preferably, the blade assembly includes multiple unit blades, each unit blade having a fixed head at one end and serrations at its tail.

[0011] Preferably, the internal skeleton of the unit blade is a honeycomb structure, the unit blade is made of carbon fiber composite material, and the surface of the unit blade is coated with polytetrafluoroethylene coating.

[0012] Preferably, the top of the rotating seat is provided with a gear disk, and the driving assembly drives a gear that meshes with the gear disk.

[0013] Preferably, the tower assembly consists of multiple first towers and multiple second towers, with the first towers and second towers alternately arranged. The first tower is connected to the base, and the first tower is connected to the rotating base.

[0014] Preferably, the first tower includes a first tower body, with a first flange at both ends of the first tower body, and a first reinforcing frame inside the first tower body, with slots at both ends of the first reinforcing frame; the second tower includes a second tower body, with a second flange at both ends of the second tower body, and a second reinforcing frame inside the second tower body, with plugs at both ends of the second reinforcing frame that mate with the slots; the base is provided with plugs that mate with the slots, and the rotating seat is provided with plugs that mate with the slots.

[0015] Preferably, both the first and second reinforcing frames are cross-shaped.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The generator body has a first cooling fin and a second cooling fin installed at both ends of the motor shaft, and the two fins rotate in the same direction. When the motor shaft rotates, it will synchronously drive the two cooling fins to rotate. At the same time, the generator body has a channel for airflow to pass through, which can guide the airflow to flow efficiently through the generator body and quickly remove heat; the heat dissipation efficiency is greatly improved, which can effectively prevent the generator from being affected by overheating, thus affecting the operational stability and service life.

[0018] 2. The heat dissipation process relies on the rotation of the motor shaft to drive the heat dissipation blades, eliminating the need for additional power-consuming heat dissipation equipment such as fans and water pumps. This reduces energy consumption, aligns with the energy-saving concept, and also reduces maintenance costs and risks associated with equipment failures.

[0019] 3. The tower assembly consists of alternating first and second towers. Both the first reinforcing frame inside the first tower and the second reinforcing frame inside the second tower are cross-shaped, significantly enhancing the structural strength of the tower and resisting the impact of external forces such as wind. The slots of the first tower and the plugs of the second tower precisely mate, and the base and rotating seat are also equipped with plugs compatible with the slots of the first tower. This ensures a tight connection between the tower assembly and the base / rotating seat, as well as between the first and second towers, resulting in a stable overall structure, reducing equipment sway during operation, and improving overall equipment stability.

[0020] 4. The mounting base rotates by meshing the drive assembly with the gear plate of the rotating base. The drive method is simple and the transmission is reliable. It can flexibly adjust the orientation of the mounting base, the gearbox above, the generator, and the blade assembly according to the wind direction, ensuring that the blade assembly can always efficiently capture wind energy. At the same time, this meshing structure also ensures that the mounting base can be stably fixed after the position is adjusted, avoiding positional displacement due to wind force.

[0021] 5. The unit blades are made of carbon fiber composite material, which is lightweight and high-strength. This reduces the load on the equipment due to the weight of the blades themselves, and can withstand strong wind impacts without being easily damaged. The internal skeleton of the blades has a honeycomb structure, which further improves the structural stability and deformation resistance of the blades and extends their service life.

[0022] 6. The blade surface is coated with a polytetrafluoroethylene (PTFE) vinyl ester coating. This coating has excellent wear and corrosion resistance, reducing the erosion of the blades by external environmental factors such as rain and dust, and maintaining the blades' good appearance and aerodynamic performance. In addition, serrations are made at the blade tail to optimize the airflow around the blades, reduce energy loss caused by airflow disturbances, improve the blades' efficiency in capturing wind energy, and thus improve the overall power generation efficiency of the generator.

[0023] 7. The generator cover not only protects the generator from external debris and rainwater, reducing the risk of generator failure, but its air inlet filter also filters dust and impurities from the air, preventing dust from entering the generator and affecting its normal operation. Furthermore, the bottom of the generator cover's connecting plate is open, and the top is angled downwards, ensuring airflow for effective heat dissipation while facilitating future inspection and maintenance of the internal components, thus reducing maintenance difficulty. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the upper part of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the generator cover and gearbox of the present invention;

[0028] Figure 4 This is a schematic diagram of the generator structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the unit blade of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the first tower of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the second tower of the present invention.

[0032] In the diagram: 1. Base; 2. Tower assembly; 3. Blade assembly; 4. Rotary seat; 5. Motor cover; 6. Gear disc; 7. Mounting seat; 8. Drive assembly; 9. Gearbox; 10. Generator; 21. First tower; 22. Second tower; 211. First tower body; 212. First flange; 213. First reinforcing frame; 214. Slot; 221. Second tower body; 222. Second flange; 223. Second reinforcing frame; 224. Plug; 31. Unit blade; 32. Fixing head; 33. Serrated edge; 51. Connecting plate; 52. Motor cover body; 53. Filter screen; 101. Generator body; 102. First heat dissipation blade; 103. Second heat dissipation blade; 104. Motor shaft. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of 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 a part of the embodiments of the present invention, not all of them. 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0034] Please see Figure 1-7 In this embodiment of the invention, a multi-blade wind turbine includes a base 1, a blade assembly 3, and a generator 10. A tower assembly 2 is mounted on the top of the base 1, and a rotating seat 4 is mounted on the top of the tower assembly 2. A mounting base 7 is rotatably mounted on the rotating seat 4. A drive assembly 8 is mounted on the mounting base 7 to drive its own rotation. A gear disk 6 is provided on the top of the rotating seat 4. The drive assembly 8 drives a gear that meshes with the gear disk 6. The drive assembly 8 can drive the mounting base 7 and the gearbox 9, generator 10, and blade assembly 3 above it to rotate through the meshing of the drive gear with the gear disk 6 of the rotating seat 4, thereby adjusting the orientation of the blade assembly to adapt to different wind directions and maximize wind energy capture. A gearbox 9 is mounted on the top of the mounting base 7. The blade assembly 3 and the generator 10 are respectively mounted on both ends of the gearbox 9. A motor cover 5 is mounted on the outside of the generator 10, providing protection for the generator. The motor cover 5 has an air inlet and an air outlet.

[0035] The generator 10 includes a generator body 101. A first heat dissipation blade 102 and a second heat dissipation blade 103 are respectively mounted on both ends of the motor shaft 104 of the generator body 101. The first heat dissipation blade 102 and the second heat dissipation blade 103 are located at both ends of the generator body 101. The generator body 101 is provided with a channel for airflow. The first heat dissipation blade 102 and the second heat dissipation blade 103 rotate in the same direction. The motor shaft 104 meshes with a gearbox 9 via gears. The blade assembly 3 rotates under wind power, transmitting power to the generator 10 through the gearbox 9. The motor shaft 104 drives the motor shaft to rotate, enabling the generator 10 to generate electricity. As the motor shaft 104 rotates, the first heat dissipation blades 102 and the second heat dissipation blades 103 at both ends rotate accordingly, causing airflow to enter from the air inlet of the motor cover 5. After being filtered by the filter screen 53, the airflow passes through the through channel of the generator body 101 and then flows out from the air outlet or the bottom opening of the motor cover connecting plate 51, achieving efficient heat dissipation of the generator. The entire heat dissipation process does not require additional power consumption. By rotating the motor shaft 104 to drive the heat dissipation blades, no additional power consumption is required, and the airflow can pass through the through channel to achieve efficient heat dissipation of the generator body.

[0036] The motor cover 5 includes a motor cover body 52. ​​A connecting plate 51 is installed on one side of the motor cover body 52. ​​The connecting plate 51 is fixed to the housing of the gearbox 9. The bottom of the connecting plate 51 is an open structure, and the top of the connecting plate 51 is inclined downward. A filter screen 53 is installed at the air inlet of the motor cover 5. The filter screen 53 can filter the incoming airflow. The inclined top and open bottom facilitate airflow and, together with the generator cooling blades, improve the heat dissipation effect.

[0037] The blade assembly 3 includes multiple unit blades 31. Each unit blade 31 has a fixed head 32 at one end and serrations 33 at its tail. The internal skeleton of the unit blade 31 is a honeycomb structure. The unit blade 31 is made of carbon fiber composite material and its surface is coated with polytetrafluoroethylene (PTFE). The honeycomb skeleton and carbon fiber composite material make the blade lightweight and strong. The PTFE coating can improve the blade's wear resistance and corrosion resistance. The serrated tail design helps to optimize wind capture and airflow, thereby improving power generation efficiency.

[0038] The tower assembly 2 consists of multiple first towers 21 and multiple second towers 22, with the first towers 21 and second towers 22 arranged alternately. The first towers 21 are connected to the base 1, and the first towers 21 are connected to the rotating seat 4.

[0039] The first tower 21 includes a first tower body 211, with first flanges 212 at both ends of the first tower body 211. A first reinforcing frame 213 is provided inside the first tower body 211, with slots 214 at both ends of the first reinforcing frame 213. The second tower 22 includes a second tower body 221, with second flanges 222 at both ends of the second tower body 221. A second reinforcing frame 223 is provided inside the second tower body 221, with slots 214 at both ends of the second reinforcing frame 223. The plug 224, which mates with the slot 214, ensures a stable connection with the tower assembly. The base 1 and the rotating seat 4 are both equipped with plugs 224 that mate with the slot 214. The first reinforcing frame 213 and the second reinforcing frame 223 are both cross-shaped. The tower assembly is composed of alternating first and second towers. Both the first reinforcing frame inside the first tower and the second reinforcing frame inside the second tower are cross-shaped, significantly enhancing the structural strength of the tower and resisting the impact of external forces such as wind. The slot of the first tower and the plug of the second tower precisely mate, and both the base and the rotating seat are equipped with plugs compatible with the slot of the first tower, ensuring a tight connection between the tower assembly and the base / rotating seat, as well as between the first and second towers. This results in a stable overall structure, reducing shaking during operation and improving the overall stability of the equipment.

[0040] The working principle of this invention is as follows: the blade assembly 3 rotates under the action of wind power, and the power is transmitted to the motor shaft 104 of the generator 10 through the gearbox 9, which drives the motor shaft to rotate, so that the generator 10 generates electricity.

[0041] As the motor shaft 104 rotates, the first heat dissipation blade 102 and the second heat dissipation blade 103 at both ends of the shaft rotate accordingly, causing the airflow to enter from the air inlet of the motor cover 5, pass through the filter screen 53, pass through the through channel of the generator body 101, and then flow out from the air outlet or the bottom opening of the motor cover connecting plate 51, thus achieving efficient heat dissipation of the generator, and the entire heat dissipation process does not require additional power consumption.

[0042] The drive assembly 8 can drive the mounting base 7 and the gearbox 9, generator 10 and blade assembly 3 above it to rotate by meshing the drive gear with the toothed disc 6 of the rotating base 4, thereby adjusting the orientation of the blade assembly to adapt to different wind directions and maximize the capture of wind energy.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-bladed wind turbine generator, comprising a base (1), a blade assembly (3), and a generator (10), characterized in that: The base (1) is equipped with a tower assembly (2) at the top, the tower assembly (2) is equipped with a rotating seat (4) at the top, the rotating seat (4) is rotatably equipped with a mounting seat (7), the mounting seat (7) is equipped with a drive assembly (8) that drives itself to rotate, the mounting seat (7) is equipped with a gearbox (9) at the top, the gearbox (9) is equipped with a blade assembly (3) and a generator (10) at both ends, the gearbox (9) is equipped with a motor cover (5) on the outside of the generator (10), and the motor cover (5) has an air inlet and an air outlet. The generator (10) includes a generator body (101). A first heat dissipation blade (102) and a second heat dissipation blade (103) are respectively installed at both ends of the motor shaft (104) of the generator body (101). The first heat dissipation blade (102) and the second heat dissipation blade (103) are respectively located at both ends of the generator body (101). The generator body (101) is provided with a channel for airflow to pass through. The motor cover (5) includes a motor cover body (52), a connecting plate (51) is installed on one side of the motor cover body (52), the connecting plate (51) is fixed to the housing of the gearbox (9), the bottom of the connecting plate (51) is an open structure, the top of the connecting plate (51) is inclined downward, and a filter screen (53) is installed at the air inlet of the motor cover (5). The motor shaft (104) meshes with the gearbox (9) via gears, and the first heat dissipation blade (102) and the second heat dissipation blade (103) rotate in the same direction. The blade assembly (3) includes multiple unit blades (31), one end of which is provided with a fixing head (32), and the tail of the unit blade (31) is provided with serrations (33). The internal skeleton of the unit blade (31) is a honeycomb structure. The unit blade (31) is made of carbon fiber composite material. The surface of the unit blade (31) is coated with polytetrafluoroethylene coating. The rotating seat (4) is provided with a toothed disc (6) on its top, and the driving assembly (8) drives a gear that meshes with the toothed disc (6); The tower assembly (2) consists of multiple first towers (21) and multiple second towers (22), with the first towers (21) and second towers (22) arranged alternately. The first tower (21) is connected to the base (1), and the first tower (21) is connected to the rotating seat (4). The first tower (21) includes a first tower body (211), with a first flange (212) at both ends of the first tower body (211), and a first reinforcing frame (213) inside the first tower body (211), with slots (214) at both ends of the first reinforcing frame (213); the second tower (22) includes a second tower body (221), with a second flange (222) at both ends of the second tower body (221), and a second reinforcing frame (223) inside the second tower body (221), with plugs (224) at both ends of the second reinforcing frame (223) that mate with the slots (214); the base (1) is provided with plugs (224) that mate with the slots (214), and the rotating seat (4) is provided with plugs (224) that mate with the slots (214); The first reinforcing frame (213) and the second reinforcing frame (223) are both cross-shaped.

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