A flapping-wing hydroelectric power generation device

Abstract

This application discloses a flapping-wing type water flow power generation device, including a housing, a flapping-wing mechanism, an input shaft, a transmission mechanism, an elastic structure, a permanent magnet, and a coil. A portion of the input shaft extends into the housing and is connected to the first elastic structure and the permanent magnet via the transmission mechanism. Along the axial direction of the output shaft of the transmission mechanism, the permanent magnet is located between the elastic structure and the coil and is mounted on the inner wall of the housing. The flapping-wing mechanism is located on the outer side of the housing and connected to the input shaft. The side of the flapping-wing mechanism away from the input shaft oscillates around the axis of the input shaft to drive the input shaft to rotate synchronously. Using the power generation device provided in this application, the flapping-wing mechanism drives the input shaft to rotate, causing the elastic potential energy of the elastic structure to continuously increase. When the elastic potential energy reaches a preset range, the elastic mechanism releases the stored elastic potential energy to drive the permanent magnet to rotate, generating a high-power alternating current signal, thereby improving the power generation device's ability to acquire and convert energy from low-velocity water flow.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a flapping-wing type hydroelectric power generation device. Background Technology

[0002] Water resources are an abundant and stable renewable energy source, and are an irreplaceable basic natural resource for maintaining the balance of the Earth's ecosystem and supporting socio-economic development.

[0003] Hydropower is an effective way to utilize water resources. Currently, most hydropower generation utilizes the kinetic energy generated by the high-speed flow of water from high to low altitudes in rivers and lakes, which is converted into mechanical energy by water turbines to drive power generation equipment. However, when the water flow is at a low velocity, it is difficult for power generation equipment to convert kinetic energy into electrical energy, which leads to the waste of renewable resources.

[0004] Therefore, how to improve the ability of power supply equipment to extract and convert energy from low-velocity water flow in order to improve the utilization rate of water resources has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a flapping-wing hydroelectric power generation device to enhance the ability to extract and convert energy from water flow, thereby effectively improving the utilization rate of water resources.

[0006] This application provides a flapping-wing type water flow power generation device for fluid power generation. The flapping-wing type water flow power generation device includes a housing, a flapping-wing mechanism, an input shaft, a transmission mechanism, a first elastic structure, a permanent magnet, and a coil. The transmission mechanism, the first elastic structure, the permanent magnet, and the coil are located inside the housing. A portion of the input shaft extends into the housing and is connected to the first elastic structure via the transmission mechanism; the first elastic structure is connected to the permanent magnet. Along the axial direction of the output shaft of the transmission mechanism, the permanent magnet is located between the first elastic structure and the coil. The coil is mounted on the inner wall of the housing. The flapping-wing mechanism is located on the outer side of the housing and is connected to the input shaft. The side of the flapping-wing mechanism away from the input shaft oscillates around the axis of the input shaft to drive the input shaft to rotate synchronously. The first elastic structure drives the permanent magnet to rotate around the axis of the output shaft of the transmission mechanism by storing or releasing elastic potential energy.

[0007] Using the flapping-wing type water flow power generation device provided in this application, during the process of the flapping-wing mechanism driving the input shaft to rotate, the first elastic structure is subjected to external force, and its internal elastic potential energy will continuously increase, thereby achieving the storage of elastic potential energy. When the value of the elastic potential energy stored in the first elastic structure reaches a preset range, the first elastic mechanism will release the stored elastic potential energy and drive the permanent magnet to rotate around the axis of the output shaft of the transmission mechanism to quickly cut magnetic field lines and generate a high-power alternating current signal, thereby effectively improving the ability to acquire and convert energy from low-velocity water flow and improving the utilization rate of water resources.

[0008] In one possible implementation of this application, the flapping wing mechanism includes a connecting rod and a flapping wing body, the flapping wing body being connected to an input shaft via the connecting rod; the extended surface of the airfoil of the flapping wing body intersects the axial direction of the input shaft. Along the direction penetrating the airfoil of the flapping wing body, the end of the flapping wing body is rotatably connected to the connecting rod. When the flapping wing body swings from a first state to a second state about the axis of its end, the input shaft rotates in a first direction, a first elastic structure stores elastic potential energy, and the permanent magnet remains stationary relative to the axis of the output shaft of the transmission mechanism. When the flapping wing body swings from a second state to a first state about the axis of its end, the input shaft rotates in a second direction, and the first elastic structure, by storing or releasing elastic potential energy, drives the permanent magnet to rotate about the axis of the output shaft of the transmission mechanism. The first direction is opposite to the second direction.

[0009] The flapping-wing hydroelectric generator provided in this application allows the flapping-wing body to oscillate around its end axis when water impacts the sidewall during operation, thereby driving the input shaft to rotate. By defining the correspondence between the rotation direction of the input shaft and the stored or released elastic potential energy of the first elastic structure, the storage of elastic potential energy in the first elastic structure is maximized. When the first elastic structure releases its elastic potential energy, it drives a permanent magnet to rotate rapidly around the output shaft of the transmission mechanism, generating a high-power alternating current signal. This effectively enhances the ability to acquire and convert energy from low-velocity water flow, and improves water resource utilization.

[0010] In one possible implementation of this application, the flapping wing body includes a wave-like surface located between the axis of the end of the flapping wing body and the input axis. This effectively increases the contact area between the water flow and the wave-like surface, as well as the adaptability of the flapping wing body to water flows of different velocities, and effectively improves the rotational efficiency of the flapping wing body.

[0011] In one possible implementation of this application, the rotation angle of the flapping wing body relative to the connecting rod is α, where α satisfies: -60°≤α≤60°. This is to effectively reduce the risk that the flapping wing body cannot achieve autonomous flapping under the impact force of the water flow during the flapping process.

[0012] In one possible implementation of this application, the connecting rod includes two stops arranged opposite to each other, with at least a portion of the flapping wing body located between the two stops. When the flapping wing body rotates relative to the connecting rod, it engages with the stops. This allows the flapping wing body to engage with the stops while limiting its swing angle relative to the connecting rod, thus simplifying the structure of the flapping wing hydroelectric generator while simultaneously meeting the requirement that the input shaft's rotation direction continuously changes.

[0013] In one possible implementation of this application, the transmission mechanism includes a first transmission part and a second transmission part. An input shaft is connected to an output shaft via the first transmission part; one end of the output shaft is connected to one end of a first elastic structure. The output shaft is rotatably connected to the second transmission part. The input shaft is connected to the other end of the first elastic structure via the second transmission part. When the input shaft rotates in a first direction, the first transmission part moves, causing the output shaft to rotate in a second direction, and the first elastic structure stores elastic potential energy. When the input shaft rotates in the second direction, the second transmission part moves, the output shaft remains stationary, and the first elastic structure stores or releases elastic potential energy. Furthermore, the first and second transmission parts move alternately.

[0014] Using the flapping-wing type water flow power generation device provided in this application, since the first transmission part and the second transmission part move alternately, when the input shaft rotates in the first direction, the first transmission part moves and drives the output shaft to rotate in the second direction. At this time, the output shaft drives the first elastic structure to tighten continuously, and the elastic potential energy of the first elastic structure increases continuously, thereby enabling the first elastic structure to store elastic potential energy.

[0015] Furthermore, when the input shaft rotates in the second direction, the second transmission unit drives the elastic potential energy of the first elastic structure to continue increasing. When the elastic potential energy stored in the first elastic structure reaches a preset range, the first elastic structure is released. In this way, the first elastic structure will drive the permanent magnet to rotate rapidly, thereby generating a high-power alternating current signal, which effectively improves the ability of the flapping-wing hydroelectric power generation device to acquire and convert energy from low-velocity water flow, and improves the utilization rate of water resources.

[0016] In one possible implementation of this application, the first transmission unit includes a driving gear and a first driven gear. An input shaft is inserted into the gear hole of the driving gear, and an output shaft is inserted into the gear hole of the first driven gear; the driving gear and the first driven gear mesh. When the input shaft rotates in a first direction, the first driven gear drives the output shaft to rotate in a second direction. When the input shaft rotates in the first direction, the driving gear drives the first driven gear and the output shaft to rotate in the second direction, thereby improving the transmission stability and structural simplicity of the flapping-wing hydroelectric power generation device while simultaneously enabling the first elastic structure to store elastic potential energy.

[0017] In one possible implementation of this application, the first transmission part further includes a stop structure to restrict the output shaft from rotating in the first direction. This effectively prevents the output shaft from releasing elastic potential energy when it rotates in the second direction, causing the first elastic structure to store elastic potential energy.

[0018] In one possible implementation of this application, the second transmission unit includes an incomplete gear, a second driven gear, and a third driven gear. The second and third driven gears are axially opposite to each other and fixedly connected. An input shaft is inserted into the gear hole of the incomplete gear, and an output shaft is inserted into the gear holes of both the second and third driven gears, and is rotatably connected to both the second and third driven gears. The second driven gear meshes with the teeth of the incomplete gear and is connected to the other end of the first elastic structure.

[0019] When the input shaft drives the incomplete gear to rotate in the second direction, the teeth of the incomplete gear drive the second driven gear and the third driven gear to rotate synchronously in the first direction, so as to drive the other end of the first elastic structure to rotate in the first direction, thereby improving the transmission stability and structural simplicity of the flapping-wing water flow power generation device while realizing the storage of elastic potential energy in the first elastic structure.

[0020] In one possible implementation of this application, the second transmission part further includes a limiting part and an abutting part. The limiting part is connected to the inner sidewall of the housing; and a portion of the limiting part is inserted into the gear groove of the third driven gear to restrict the movement of the third driven gear along the second direction. Along the axial direction of the incomplete gear, the abutting part is disposed on the side of the incomplete gear near the limiting part and protrudes from the smooth surface of the incomplete gear. When the smooth surface of the incomplete gear is opposite to the teeth of the second driven gear, the abutting part abuts against the limiting part, thereby driving a portion of the limiting part to separate from the gear groove of the third driven gear, and the first elastic structure releases elastic potential energy.

[0021] Using the flapping-wing water flow power generation device provided in this application, during the process of the first driven gear driving the first elastic structure to store elastic potential energy, the limiting part can be used to prevent the first elastic structure, which stores a large amount of elastic potential energy, from rotating in the second direction and releasing the elastic potential energy. In addition, when the elastic potential energy stored in the first elastic structure reaches a preset range, the abutting part will drive the limiting part to separate from the gear groove of the third driven gear, thereby causing the first elastic structure to drive the permanent magnet to rotate rapidly to generate a high-power AC signal. This effectively improves the ability of the flapping-wing water flow power generation device to acquire and convert energy from low-velocity water flow, while also improving the transmission stability and structural simplicity of the flapping-wing water flow power generation device.

[0022] In one possible implementation of this application, the flapping wing body includes a shell, a rotating structure, a first fixed part, and a first elastic part. The rotating structure, the first fixed part, and the first elastic part are all located within the shell, and the first fixed part and the first elastic part are connected. The first fixed part is inserted into the inner wall of the shell; the first elastic part is located between the rotating structure and the first fixed part. The rotating structure abuts against the first elastic part and drives the free end of the first elastic part to move toward or away from the first fixed part. When the free end of the first elastic part moves toward or away from the first fixed part, an alternating current signal is generated between the first elastic part and the first fixed part.

[0023] The flapping-wing water flow power generation device provided in this application, by setting a first elastic part and a first fixed part for contact power generation inside the shell of the flapping-wing mechanism, can effectively capture the kinetic energy generated during the swinging of the flapping-wing mechanism relative to the connecting rod, thereby realizing the coordinated collection of kinetic energy of multiple degrees of freedom of the flapping-wing water flow power generation device, which is conducive to further improving the output power capacity of the flapping-wing water flow power generation device.

[0024] In one possible implementation of this application, the flapping wing body further includes a second fixed part and a second elastic part. The second fixed part is connected to the second elastic part and is inserted into the inner wall of the outer shell. A rotating structure is located between the first elastic part and the second elastic part. The rotating structure is used to abut against the second elastic part and drive the free end of the second elastic part to move toward or away from the second fixed part. When the free end of the second elastic part moves toward or away from the second fixed part, an alternating current signal can be generated between the second elastic part and the second fixed part. This is used to further effectively capture the kinetic energy generated during the flapping wing mechanism's swing relative to the connecting rod, thereby achieving the coordinated collection of kinetic energy of multiple degrees of freedom in the flapping wing hydroelectric power generation device, which is beneficial to further improve the power output capability of the flapping wing hydroelectric power generation device.

[0025] In one possible implementation of this application, the flapping wing body further includes a connecting structure disposed between the first elastic part and the second elastic part, and connected to both the first and second elastic parts respectively. Thus, when one elastic part moves towards the opposite fixed part, it can drive the other elastic part away from its corresponding fixed part, thereby effectively reducing the risk that the elastic parts and the fixed part cannot separate properly due to electrostatic adsorption.

[0026] In one possible implementation of this application, the flapping wing body further includes a rotating shaft and a second elastic structure, both located within the outer shell. The rotating shaft is inserted into and rotatably connected to the rotating structure; the rotating shaft is fixedly connected to the outer shell. The second elastic structure is sleeved on the rotating shaft, with one end connected to the rotating structure and the other end connected to the outer shell. The outer shell is mounted on a connecting rod and rotatably connected to the connecting rod along the axial direction of the rotating shaft. Thus, during the oscillation of the rotating structure, the rotating structure can automatically reset and continue oscillating in the direction of the torsional force under the action of the second elastic structure, which helps improve the oscillation stability of the rotating structure and effectively enhances the contact stability between the elastic part and the fixed part. Attached Figure Description

[0027] Figure 1 A schematic diagram of a flapping-wing hydroelectric power generation device provided in this application;

[0028] Figure 2 A schematic diagram of a cross-section of an airfoil;

[0029] Figure 3 for Figure 1 A cross-sectional view of the flapping-wing hydroelectric power generation device provided;

[0030] Figure 4 A schematic diagram of the flapping-wing hydroelectric power generation device provided in this application in its first state;

[0031] Figure 5 A schematic diagram of the flapping-wing hydroelectric power generation device provided in this application in its second state;

[0032] Figure 6 for Figure 3 A partial schematic diagram of the flapping-wing hydroelectric power generation device provided;

[0033] Figure 7 for Figure 1 A partial schematic diagram of the flapping-wing hydroelectric power generation device provided;

[0034] Figure 8 A schematic diagram of a first elastic structure provided in this application;

[0035] Figure 9 A partial schematic diagram of the first transmission unit provided in this application.

[0036] Reference numerals: 1-Box; 2-Flapping wing mechanism; 21-Linking rod; 211-Stop; 22-Flapping wing body; 221-Connecting shaft; 2211-Limiting structure; 222-Wave surface; 223-Outer shell; 224-Rotating structure; 2241-Rotating shaft; 225-First fixing part; 2251-First friction film; 226-First elastic part; 2261-Second friction film; 227-Second fixing part; 228-Second elastic part; 229-Connecting structure; 2201-Second elastic structure; 3-Input shaft; 4-Transmission mechanism; 5-First elastic structure; 6-Permanent magnet; 7-Coil; 8-Output shaft; 01-Leading edge; 02-Rearing edge; 41-First transmission part; 411-Driving gear; 412-First driven gear; 42-Second transmission part; 421 - Incomplete gear; 422 - Second driven gear; 423 - Third driven gear; 424 - Limiting part; 425 - Abutting part; 426 - Spring plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are only for illustrating relative positional relationships and do not represent actual scale.

[0038] It should be noted that specific details are set forth in the following description to facilitate understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] Water resources are an abundant and stable renewable energy source, and are an irreplaceable basic natural resource for maintaining the balance of the Earth's ecosystem and supporting socio-economic development.

[0040] Hydropower is an effective way to utilize water resources. Currently, most hydropower generation utilizes the kinetic energy generated by the high-speed flow of water from high to low altitudes in rivers and lakes, which is converted into mechanical energy by water turbines to drive power generation equipment. However, when the water flow is at a low velocity, it is difficult for power generation equipment to convert kinetic energy into electrical energy, which leads to the waste of renewable resources.

[0041] In view of this, the power supply equipment provided in this application, by setting an elastic structure and having the low-flowing water do work on the elastic structure, causes the elastic potential energy of the elastic structure to continuously increase. When the elastic potential energy reaches a preset range, the elastic structure can be released, causing it to drive the permanent magnet 6 to move rapidly, thereby generating a high-power alternating current signal and realizing the energy acquisition and conversion of the low-flowing water, thus improving the utilization rate of water resources. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] It is understandable that the flapping-wing hydroelectric power generation device provided in this application can also be applied to other scenarios for power generation.

[0043] refer to Figure 1 , Figure 1 This is a schematic diagram of a flapping-wing type water flow power generation device provided in this application. The flapping-wing type water flow power generation device is used for water flow power generation and includes a housing 1, a flapping-wing mechanism 2, an input shaft 3, a transmission mechanism 4, a first elastic structure 5, a permanent magnet 6, and a coil 7. The transmission mechanism 4, the first elastic structure 5, the permanent magnet 6, and the coil 7 are all located inside the housing 1, and a portion of the input shaft 3 extends into the housing 1 and is connected to the first elastic structure 5 through the transmission mechanism 4 to enable the first elastic structure 5 to store or release elastic potential energy.

[0044] In addition, along the axial direction of the output shaft 8 of the transmission mechanism 4, the permanent magnet 6 is located between the first elastic structure 5 and the coil 7, and the coil 7 is installed on the inner side wall of the housing 1. At the same time, the first elastic structure 5 is connected to the permanent magnet 6, so that the first elastic structure 5 can drive the permanent magnet 6 to rotate around the axis of the output shaft 8 of the transmission mechanism 4 by storing or releasing elastic potential energy, thereby generating an alternating current signal.

[0045] It is understandable that input axis 3 and output axis 8 can be configured as follows: Figure 1 The status interval settings shown can also be arranged in other ways according to actual needs.

[0046] Furthermore, using the flapping-wing type water flow power generation device provided in this application, the flapping-wing mechanism 2 can be disposed on the outside of the housing 1, and simultaneously connected to the input shaft 3. During operation of the flapping-wing type water flow power generation device, at least a portion of the flapping-wing mechanism 2 is submerged below the water surface along the axial direction of the input shaft 3. Thus, when the flapping-wing mechanism 2 is impacted by water flow, the side of the flapping-wing mechanism 2 away from the input shaft 3 swings around the axis of the input shaft 3, thereby driving the input shaft 3 to rotate synchronously.

[0047] During the rotation of the input shaft 3 driven by the flapping wing mechanism 2, the first elastic structure 5 is subjected to external force, and its internal elastic potential energy will continuously increase, thereby storing elastic potential energy. When the value of the elastic potential energy stored in the first elastic structure 5 reaches a preset range, the first elastic mechanism will release the stored elastic potential energy and drive the permanent magnet 6 to rotate around the axis of the output shaft 8 of the transmission mechanism 4, so as to quickly cut magnetic field lines and generate a high-power alternating current signal, thereby effectively improving the ability to acquire and convert energy from low-velocity water flow and improving the utilization rate of water resources.

[0048] It should be noted that this application does not limit the specific form of the first elastic structure 5. For example, the first elastic structure 5 can be a coil spring or a torsion spring.

[0049] It is understood that the flapping-wing hydroelectric power generation device is also equipped with external circuits and an energy storage module to convert the aforementioned alternating current into direct current and store it, thereby powering electrical equipment (such as sensors). Furthermore, when the flapping-wing hydroelectric power generation device provided in this application is applied to hydroelectric power generation, it can autonomously collect and convert weak dynamic energy and continuously supply power to electrical equipment. Therefore, it is beneficial to improve the adaptability of the flapping-wing hydroelectric power generation device to different environments and electrical equipment.

[0050] When specifically configuring flapping wing mechanism 2, please refer to... Figure 1 The flapping wing mechanism 2 includes a connecting rod 21 and a flapping wing body 22, which is connected to the input shaft 3 via the connecting rod 21. It should be noted that the flapping wing body 22 has an airfoil, i.e., an infinite-span wing with an unchanged cross-sectional shape. For example... Figure 2 As shown, Figure 2 Used to show the shape of the airfoil, the airfoil includes a leading edge 01 and a trailing edge 02. The edge on the airfoil that is farthest from the trailing edge 02 is called the leading edge 01. The straight line connecting the leading edge 01 and the trailing edge 02 is called the chord, and its length is called the chord length.

[0051] The flapping wing body 22 of the flapping wing hydroelectric power generation device provided in this application can be NACA airfoil or elliptical airfoil.

[0052] Combined Figure 1 and Figure 3 , Figure 3 The flapping wing body 22 is used to show the internal structure after the airfoil is cut. The end of the flapping wing body 22 includes a connecting shaft 221, which is located between the leading edge 01 and the trailing edge 02 and is perpendicular to the airfoil of the flapping wing body 22.

[0053] Furthermore, the extended surface of the airfoil of the flapping wing body 22 intersects the axial direction of the input shaft 3, which can, for example, be parallel to the axial direction of the connecting shaft 221. Along the direction penetrating the airfoil of the flapping wing body 22, the end of the flapping wing body 22 is rotatably connected to the connecting rod 21, that is, the connecting shaft 221 is rotatably connected to the connecting rod 21. The leading edge 01 is located between the trailing edge 02 and the input shaft 3. Thus, when the flapping wing body 22 is impacted by water flow, a pressure difference will be generated between different positions on the outer wall of the flapping wing body 22, causing the flapping wing body 22 to oscillate around the axis of its end.

[0054] In one alternative embodiment, when the axis of the flapping wing body 22 about the end of the flapping wing body 22 (i.e., the axis of the flapping wing body 22 about the connecting shaft 221) is as follows Figure 4 The first state shown swings to as Figure 5 In the second state shown, the input shaft 3 rotates along the first direction, while the first elastic structure 5 stores elastic potential energy, and the permanent magnet 6 remains stationary relative to the axis of the output shaft 8 of the transmission mechanism 4.

[0055] Additionally, when the axis of the flapping wing body 22 around its end (the axis of the flapping wing body 22 around the connecting shaft 221) is as follows Figure 5 The second state shown swings to, as Figure 4 In the first state shown, the input shaft 3 rotates in the second direction, and the first elastic structure 5 drives the permanent magnet 6 to rotate around the axis of the output shaft 8 of the transmission mechanism 4 by storing or releasing elastic potential energy.

[0056] It should be noted that this application will describe in detail the operating status of the flapping-wing hydroelectric power generation device with the first direction being counterclockwise and the second direction being clockwise.

[0057] In addition, the rotation angle α of the flapping wing body 22 relative to the connecting rod 21 can be adjusted according to actual needs. For example, α can satisfy: -60°≤α≤60°, so that after the flapping wing body 22 is subjected to the impact force of the water flow and swings to the first state, the flapping wing body 22 can continue to swing to the second state under the action of the impact force of the water flow, so as to reduce the risk that the flapping wing body 22 cannot achieve autonomous swinging under the impact force of the water flow.

[0058] When α satisfies -60°≤α≤60°, the flapping wing body 22 can swing around the axis of the input shaft 3, and the swing angle β satisfies -120°<β<120°.

[0059] Using the flapping-wing water flow power generation device provided in this application, during the operation of the device, when the water flow impacts the side wall of the flapping-wing body 22, a pressure difference will be generated between different positions on the outer wall of the flapping-wing body 22. This will cause the flapping-wing body 22 to swing around the axis of the connecting shaft 221, thereby driving the input shaft 3 to rotate. By defining the correspondence between the rotation direction of the input shaft 3 and the stored or released elastic potential energy of the first elastic structure 5, the storage of elastic potential energy of the first elastic structure 5 is maximized. When the first elastic structure 5 releases elastic potential energy, it drives the permanent magnet 6 to rotate rapidly around the axis of the output shaft 8 of the transmission mechanism 4, thereby generating a high-power alternating current signal. This effectively improves the ability to acquire and convert energy from low-velocity water flow and enhances the utilization rate of water resources.

[0060] It is worth mentioning that the flapping wing body 22 includes a wave surface 222, which is located between the axis of the end of the flapping wing body 22 and the input shaft 3, that is, the wave surface 222 is located at the leading edge 01 of the flapping wing body 22. Furthermore, during the operation of the flapping wing hydroelectric power generation device, when the line connecting the leading edge 01 and the trailing edge 02 is parallel to the water flow direction, the direction from the leading edge 01 to the trailing edge 02 is the direction of water flow. The wave surface 222 can improve the vortex evolution process around the flapping wing body 22, thereby further enhancing the dynamic performance of the flapping wing body 22 and its adaptability to water flow at different velocities, thus effectively improving the rotational efficiency of the flapping wing body 22.

[0061] When specifically setting up link 21, continue to refer to... Figure 4 The connecting rod 21 includes two stop portions 211, which are arranged opposite to each other, and at least a portion of the flapping wing body 22 is located between the two stop portions 211. Thus, when the flapping wing body 22 rotates relative to the connecting rod 21, it can abut against the stop portions 211 to limit the swing angle of the flapping wing body 22 relative to the connecting rod 21. This simplifies the structure of the flapping wing type hydroelectric power generation device while simultaneously meeting the requirement that the rotation direction of the input shaft 3 driven by the flapping wing body 22 continuously changes.

[0062] It should be noted that this application does not limit the specific structure of the stop 211. For example, the stop 211 can be a protrusion or bend located at the end of the connecting rod 21 away from the input shaft 3, and both the protrusion and bend are along the axial direction of the connecting shaft 221. Furthermore, along the axial direction of the connecting shaft 221, the connecting shaft 221 protrudes from the surface of the connecting rod 21, and along... Figure 5In the extension direction of the connecting rod 21 shown, the connecting shaft 221 is provided with a limiting structure 2211, and the limiting structure 2211 is located between two stop portions 211. In this way, when the connecting shaft 221 rotates, the limiting structure 2211 can abut against the stop portion 211, so as to simplify the structure of the flapping wing body 22 while satisfying the limitation of the swing angle of the flapping wing body 22 relative to the connecting rod 21.

[0063] In a specific embodiment, such as Figure 3 As shown, the flapping wing body 22 also includes a shell 223, a rotating structure 224, a first fixing part 225, and a first elastic part 226. The rotating structure 224, the first fixing part 225, and the first elastic part 226 are all located within the shell 223, and the first fixing part 225 and the first elastic part 226 are connected. Simultaneously, the first fixing part 225 is inserted into the inner wall of the shell 223, and the first elastic part 226 is located between the rotating structure 224 and the first fixing part 225. Figure 1 As shown, the outer casing 223 is mounted on the connecting rod 21 via the connecting shaft 221, and the outer casing 223 rotates relative to the connecting rod 21 about the axis of the connecting shaft 221.

[0064] It should be noted that the connection between the outer casing 223 and the connecting shaft 221 is, for example, a fixed connection, and the outer casing 223 and the connecting shaft 221 rotate synchronously about the axis of the connecting shaft 221 relative to the connecting rod 21.

[0065] When specifically configuring the first fixing part 225 and the first elastic part 226, such as Figure 6 As shown, Figure 6 The structure of the first fixing part 225 and the first elastic part 226 is used to illustrate the structure of the first fixing part 225, wherein the first fixing part 225 includes a substrate, a metal electrode and a first friction film 2251, and the metal electrode is located between the substrate and the friction film, while the metal electrode is located on the surface of the substrate and the friction film is located on the surface of the metal electrode.

[0066] The first elastic portion 226 includes a substrate, a flexible layer, a metal electrode, and a second friction film 2261 arranged sequentially. The first friction film 2251 and the second friction film 2261 are polymer materials with different triboelectric sequence positions. The first friction film 2251 is exemplarily a nylon film, and the second friction film 2261 is exemplarily a fluorinated ethylene propylene film. They are attached to the surface of the metal electrode as the positive and negative electrode friction materials, respectively. The metal electrode can be, for example, copper or aluminum.

[0067] When specifically setting the rotating structure 224, such as Figure 3As shown, the rotating structure 224 is exemplarily an elliptical cylinder. The elliptical cylinder is connected to the bottom of the outer shell 223 along the axial direction through the rotating shaft 2241. The axial direction of the rotating shaft 2241 is parallel to the axial direction of the connecting shaft 221 provided at the end of the flapping wing body 22. At the same time, the elliptical cylinder is rotatably connected to the rotating shaft 2241.

[0068] Thus, when the outer shell 223 of the flapping wing body 22 swings relative to the connecting rod 21 under external force, the rotating structure 224 will also rotate around the axis of the rotating shaft 2241. When the rotating structure 224 moves toward the first elastic part 226, it will compress the first elastic part 226, causing the free end of the first elastic part 226 to move toward the first fixed part 225, thus bringing the first elastic part 226 into contact with the first fixed part 225. When the rotating structure 224 moves away from the first elastic part 226, the free end of the compressed first elastic part 226 separates from the first fixed part 225.

[0069] Since the contact surfaces of the first elastic part 226 and the first fixed part 225 carry opposite charges, charge movement will occur between them during the contact and separation process, thereby generating an alternating current signal. Therefore, by employing the flapping-wing water flow power generation device provided in this application, a contact-type power generation structure is provided within the housing 223 of the flapping-wing mechanism 2 to effectively capture the kinetic energy generated during the swinging of the flapping-wing mechanism 2 relative to the connecting rod 21. This achieves coordinated collection of kinetic energy across multiple degrees of freedom in the flapping-wing water flow power generation device, which is beneficial for further enhancing the output power capacity of the flapping-wing water flow power generation device.

[0070] In addition, such as Figure 3 As shown, the flapping wing body 22 may also include a second fixing part 227 and a second elastic part 228. The second fixing part 227 is connected to the second elastic part 228, and the second fixing part 227 is inserted into the inner side wall of the outer shell 223. The rotating structure 224 is located between the first elastic part 226 and the second elastic part 228.

[0071] It should be noted that the structural form of the second fixing part 227 and the second elastic part 228, as well as their connection relationship, can be referred to the first fixing part 225 and the first elastic part 226 described above, and will not be repeated here.

[0072] Thus, when the outer shell 223 of the flapping wing body 22 swings relative to the connecting rod 21 under external force, regardless of whether the rotating structure 224 moves toward the first elastic part 226 or toward the second elastic part 228, the rotating structure 224 can squeeze the corresponding elastic part so that the free end of the elastic part moves toward the corresponding fixed part, and the free end of the elastic part contacts the fixed part.

[0073] Since the contact surfaces of the second elastic part 228 and the second fixed part 227 also carry opposite charges, charge movement will occur between the two parts during the contact and separation process, thereby generating an alternating current signal. Therefore, by using the power supply device provided in this application, multiple contact-type power generation structures are provided inside the housing 223 of the flapping wing mechanism 2 to further capture the kinetic energy generated during the swinging of the flapping wing mechanism 2 relative to the connecting rod 21, thereby further enhancing the output power capability of the flapping wing type water flow power generation device.

[0074] It is worth mentioning that the flapping wing body 22 also includes a connecting structure 229, which is disposed between the first elastic part 226 and the second elastic part 228, and is connected to the first elastic part 226 and the second elastic part 228 respectively. Thus, when the first elastic part 226 moves towards the first fixed part 225, the first elastic part 226 can drive the second elastic part 228 to move towards the first fixed part 225. This effectively reduces the risk that the second elastic part 228 and the second fixed part 227 may not be able to separate properly due to electrostatic adsorption. It is understandable that when the second elastic part 228 moves towards the second fixed part 227, the second elastic part 228 will also drive the first elastic part 226 to move towards the second fixed part 227. Therefore, this also reduces the risk that the first elastic part 226 and the first fixed part 225 may not be able to separate properly due to electrostatic adsorption.

[0075] Furthermore, the first elastic part 226, the first fixed part 225, the second elastic part 228, the second fixed part 227, and the connecting structure 229 can be configured as two symmetrical sets, and the rotating shaft 2241, which is rotatably connected to the elliptical cylinder along the major axis of the elliptical cylinder, is located between the two sets of structures. In this way, when the elliptical cylinder swings, both ends of the elliptical cylinder along its major axis can be used to apply pressure towards the opposite elastic part, causing the elastic part and the fixed part to contact, which is beneficial for further improving the output power of the flapping-wing hydroelectric power generation device.

[0076] In an optional embodiment, the flapping wing body 22 further includes a second elastic structure 2201, which is sleeved on the rotating shaft 2241. One end of the second elastic structure 2201 is connected to the rotating structure 224, and the other end is connected to the outer shell 223. The second elastic structure 2201 is exemplarily a torsion spring. Thus, during the swinging process of the rotating structure 224, the rotating structure 224 can automatically reset under the torsional force of the torsion spring and continue swinging in the direction of the torsional force. This helps to improve the swinging stability of the rotating structure 224 and effectively improves the contact stability between the elastic part and the fixed part.

[0077] In one specific embodiment, reference Figure 7 , Figure 7 for Figure 1 The provided partial schematic diagram of the flapping-wing hydroelectric power generation device is used to illustrate the transmission mechanism 4. Specifically, the transmission mechanism 4 may include a first transmission part 41 and a second transmission part 42, and the input shaft 3 is connected to the output shaft 8 through the first transmission part 41.

[0078] In addition, the first elastic structure 5 in the flapping-wing hydroelectric power generation device provided in this application will be described in detail using a coil spring as an example.

[0079] like Figure 8 As shown, one end of the output shaft 8 is connected to one end of the first elastic structure 5 (the end of the inner coil of the coil spring), and the output shaft 8 is rotatably connected to the second transmission part 42. At the same time, the input shaft 3 is connected to the other end of the first elastic structure 5 (the end of the outer coil of the coil spring) through the second transmission part 42.

[0080] Using the flapping-wing type water flow power generation device provided in this application, since the first transmission part 41 and the second transmission part 42 move alternately, when the input shaft 3 rotates in the first direction (counterclockwise), the first transmission part 41 moves and drives the output shaft 8 to rotate in the second direction (clockwise). At this time, the output shaft 8 drives the end of the inner ring of the coil spring to rotate, while the end of the second rotating part and the outer ring of the coil spring are stationary. The coil spring is continuously tightened, and the elastic potential energy of the coil spring is continuously increased, thereby storing elastic potential energy in the coil spring.

[0081] Furthermore, when the input shaft 3 rotates in the second direction, the second transmission unit 42 drives the end of the outer coil of the coil spring to rotate counterclockwise, while the output shaft 8 remains stationary, meaning the end of the inner coil of the coil spring is stationary, thus the elastic potential energy of the coil spring continues to increase. When the elastic potential energy stored in the coil spring reaches a preset range, the coil spring is released. Since the end of the outer coil of the coil spring is fixedly connected to the permanent magnet 6, the end of the outer coil of the coil spring will drive the permanent magnet 6 to rotate rapidly in the clockwise direction to generate a high-power alternating current signal, thereby effectively improving the ability of the flapping-wing hydroelectric power generation device to acquire and convert energy from low-velocity water flow, and improving the utilization rate of water resources.

[0082] In one alternative implementation, such as Figure 8 As shown, the first transmission unit 41 includes a driving gear 411 and a first driven gear 412. The input shaft 3 is inserted into the gear hole of the driving gear 411, and the output shaft 8 is inserted into the gear hole of the first driven gear 412. The driving gear 411 and the first driven gear 412 mesh.

[0083] In this way, when the input shaft 3 rotates in the first direction, the driving gear 411 will drive the first driven gear 412 and the output shaft 8 to rotate in the second direction, so as to improve the transmission stability and structural simplicity of the flapping-wing hydroelectric power generation device while realizing the storage of elastic potential energy by the coil spring.

[0084] It is worth mentioning that the first transmission part 41 also includes a stop structure, which is used to restrict the rotation of the output shaft 8 in the first direction. The stop structure can be exemplarily a one-way bearing, and the first transmission part 41 may include multiple one-way bearings. Specifically, in the second direction, the output shaft 8 and the first driven gear 412 are fixedly connected by one-way bearings. Simultaneously, in the first direction, the output shaft 8 is fixedly connected to the inner wall of the housing 1 by one-way bearings. Thus, when the output shaft 8 rotates in the second direction and drives the first elastic structure 5 to store elastic potential energy, the one-way bearing between the output shaft 8 and the inner wall of the housing 1 can restrict the rotation of the output shaft 8 in the first direction, thereby preventing the first elastic structure 5 from releasing its elastic potential energy.

[0085] In one alternative implementation, continue to refer to Figure 7 The second transmission unit 42 includes an incomplete gear 421, a second driven gear 422, and a third driven gear 423. The second driven gear 422 and the third driven gear 423 are arranged opposite each other along the axial direction and are fixedly connected. Meanwhile, the input shaft 3 is inserted into the gear hole of the incomplete gear 421, and the output shaft 8 is inserted into the gear holes of the second driven gear 422 and the third driven gear 423. The output shaft 8 is rotatably connected to both the second driven gear 422 and the third driven gear 423. The second driven gear 422 meshes with the teeth of the incomplete gear 421, and the second driven gear 422 is connected to the other end of the first elastic structure 5 (the end of the outer ring of the coil spring).

[0086] Thus, when the input shaft 3 drives the incomplete gear 421 to rotate in the second direction (clockwise), the teeth of the incomplete gear 421 drive the second driven gear 422 and the third driven gear 423 to rotate synchronously in the first direction, so as to drive the end of the outer ring of the coil spring to rotate in the first direction, thereby improving the transmission stability and structural simplicity of the flapping-wing water flow power generation device while realizing the storage of elastic potential energy in the first elastic structure 5.

[0087] Additionally, the second transmission unit 42 may also include a limiting part 424, which is connected to the inner side wall of the housing 1, and a portion of the limiting part 424 is movable relative to the third driven gear 423. Simultaneously, a portion of the limiting part 424 is inserted into the gear slot of the third driven gear 423 to restrict the movement of the third driven gear 423 in the second direction during the rotation of the third driven gear 423 driven by the input shaft 3. In this way, during the process of the first driven gear 412 driving the coil spring to store elastic potential energy, the coil spring, which stores a large amount of elastic potential energy, can be effectively prevented from rotating in the second direction and releasing its elastic potential energy. This effectively enhances the ability of the flapping-wing hydroelectric power generation device to acquire and convert kinetic energy, so as to generate a high-power AC signal when the coil spring releases its elastic potential energy.

[0088] It is worth mentioning that, please refer to the following: Figure 7 and Figure 9 , Figure 9 A structure for displaying the abutment portion 425, the second transmission portion 42 also includes the abutment portion 425, which is disposed on the side of the incomplete gear 421 near the limiting portion 424 along the axial direction of the incomplete gear 421 and protrudes from the smooth surface of the incomplete gear 421.

[0089] Thus, during the operation of the flapping-wing water flow power generation device, when the smooth surface of the incomplete gear 421 aligns with the teeth of the second driven gear 422, the abutting part 425 abuts against the limiting part 424, causing a portion of the limiting part 424 to separate from the gear groove of the third driven gear 423. Furthermore, since both the second driven gear 422 and the third driven gear 423 are rotatably connected to the output shaft 8, when the limiting part 424 separates from the gear groove of the third driven gear 423, the first elastic structure 5 releases elastic potential energy, thereby driving the second driven gear 422, the third driven gear 423, and the permanent magnet 6 to rotate synchronously and rapidly, generating a high-power alternating current signal. This effectively enhances the flapping-wing water flow power generation device's ability to acquire and convert energy from low-velocity water flow while also improving the device's transmission stability and structural simplicity.

[0090] It should be noted that this application does not limit the specific form of the abutment part 425. The abutment part 425 can be, for example, a separately provided cam, or a protrusion provided on one side of the incomplete gear 421 and protruding from the smooth surface of the incomplete gear 421 along the axial direction of the incomplete gear 421. This is to make the structure of the flapping-wing hydroelectric power generation device simpler while meeting the functional requirements of the abutment part 425.

[0091] In addition, a one-way bearing is also provided between the input shaft 3 and the incomplete gear 421. The direction of this one-way bearing is opposite to that of the one-way bearing between the input shaft 3 and the drive gear 411. This is used to drive the corresponding transmission part to move when the input shaft 3 swings in different directions, thereby realizing the storage or release of elastic potential energy in the first elastic structure 5.

[0092] It should be noted that, when specifically setting the limiting part 424, the limiting part 424 can be exemplarily a pawl or a connecting rod 21 structure, and the end of the pawl or connecting rod 21 is used to insert into the gear groove to limit the rotation direction of the third driven gear 423.

[0093] Additionally, the second transmission unit 42 may include a spring plate 426 for accommodating the spring. The end of the outer ring of the spring is fixedly connected to the side wall of the spring plate 426. Specifically, the spring plate 426 is positioned along the axial direction of the output shaft 8 on the side of the second driven gear 422 opposite to the third driven gear 423, and is fixedly connected to the second driven gear 422 and the permanent magnet 6. Simultaneously, the output shaft 8 passes through the bottom of the spring plate 426 and is fixed to the end of the inner ring of the spring. This improves the stability of the spring when it stores or releases elastic potential energy.

[0094] In summary, using the flapping-wing type water flow power generation device provided in this application, during the rotation of the input shaft 3 driven by the flapping-wing mechanism 2, the first elastic structure 5 is subjected to external force, and its internal elastic potential energy will continuously increase, thereby achieving the storage of elastic potential energy. When the value of the elastic potential energy stored in the first elastic structure 5 reaches a preset range, the first elastic mechanism will release the stored elastic potential energy and drive the permanent magnet 6 to rotate around the axis of the output shaft 8 of the transmission mechanism 4, so as to quickly cut magnetic field lines and generate a high-power alternating current signal, thereby effectively improving the ability to acquire and convert energy from low-velocity water flow and improving the utilization rate of water resources.

[0095] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A flapping wing type water current power generation device for water current power generation, characterized by, The box, flapping mechanism, input shaft, transmission mechanism, first elastic structure, permanent magnet and coil are located inside the box. Part of the input shaft extends into the box and is connected through the transmission mechanism and the first elastic structure; the first elastic structure is connected with the permanent magnet; and along the axial direction of the output shaft of the transmission mechanism, the permanent magnet is located between the first elastic structure and the coil; the coil is installed on the inner side wall of the box. The flapping mechanism is located outside the box and is connected with the input shaft; the side of the flapping mechanism away from the input shaft swings around the axis of the input shaft, for driving the input shaft to rotate synchronously. The first elastic structure drives the permanent magnet to rotate around the axis of the output shaft of the transmission mechanism by storing or releasing elastic potential energy. The transmission mechanism comprises a first transmission part and a second transmission part; the input shaft is connected with the output shaft through the first transmission part; one end of the output shaft is connected with one end of the first elastic structure; the output shaft is rotationally connected with the second transmission part. The input shaft is connected with the other end of the first elastic structure through the second transmission part. When the input shaft rotates in a first direction, the first transmission part moves to drive the output shaft to rotate in a second direction, and the first elastic structure stores elastic potential energy. When the input shaft rotates in the second direction, the second transmission part moves, the output shaft is stationary, and the first elastic structure stores or releases elastic potential energy. The first transmission part and the second transmission part move alternately. The first direction is opposite to the second direction.

2. The flapping hydroelectric generator of claim 1, wherein, The flapping mechanism comprises a connecting rod and a flapping body; the flapping body is connected with the input shaft through the connecting rod; the extension plane of the wing profile of the flapping body intersects with the axial direction of the input shaft. The end of the flapping body is rotationally connected with the connecting rod along the direction of the wing profile of the flapping body. When the flapping body swings around the axis of the end of the flapping body from a first state to a second state, the input shaft rotates in the first direction, the first elastic structure stores elastic potential energy, and the permanent magnet is stationary relative to the axis of the output shaft of the transmission mechanism. When the flapping body swings around the axis of the end of the flapping body from the second state to the first state, the input shaft rotates in the second direction, and the first elastic structure drives the permanent magnet to rotate around the axis of the output shaft of the transmission mechanism by storing or releasing elastic potential energy.

3. The flapping hydroelectric generator of claim 2, wherein, The flapping body comprises a wave surface located between the axis of the end of the flapping body and the input shaft.

4. The flapping hydroelectric generator of claim 2, wherein, The rotation angle of the flapping body relative to the connecting rod is α, and the α satisfies -60°≤α≤60°.

5. The flapping hydroelectric generator of claim 4, wherein, The connecting rod comprises two stop parts, and the flapping body is located between the two stop parts. When the flapping body rotates relative to the connecting rod, the flapping body is used to abut against the stop parts.

6. The flapping hydroelectric apparatus of claim 1, wherein, The first transmission part comprises a driving gear and a first driven gear, the input shaft is inserted into a gear hole of the driving gear, and the output shaft is inserted into a gear hole of the first driven gear; The driving gear and the first driven gear are engaged; When the input shaft rotates in the first direction, the first driven gear drives the output shaft to rotate in a second direction.

7. The flapping hydroelectric power apparatus according to claim 1 or 6, wherein The first transmission part further comprises a stop structure for limiting the rotation of the output shaft in the first direction.

8. The flapping hydroelectric generator of claim 7, wherein, The second transmission part comprises an incomplete gear, a second driven gear and a third driven gear, the second driven gear and the third driven gear are arranged in axial opposition and fixedly connected; The input shaft is inserted into a gear hole of the incomplete gear, the output shaft is inserted into gear holes of the second driven gear and the third driven gear and rotationally connected with the second driven gear and the third driven gear; the second driven gear is engaged with the gear teeth of the incomplete gear and connected with the other end of the first elastic structure.

9. The flapping hydroelectric generator of claim 8, wherein, The second transmission part further comprises a limiting portion and an abutting portion, the limiting portion is connected with the inner side wall of the box body; and part of the limiting portion is inserted into a gear groove of the third driven gear for limiting the movement of the third driven gear in the second direction; Along the axial direction of the incomplete gear, the abutting portion is arranged on the side of the incomplete gear close to the limiting portion and protrudes from the smooth surface of the incomplete gear; When the smooth surface of the incomplete gear is opposite to the gear teeth of the second driven gear, the abutting portion abuts against the limiting portion, for driving part of the limiting portion to separate from the gear groove of the third driven gear, and the first elastic structure releases the elastic potential energy.

10. The flapping hydroelectric generator of any one of claims 2-5, wherein, The flapping wing body comprises an outer shell, a rotating structure, a first fixing portion and a first elastic portion, the rotating structure, the first fixing portion and the first elastic portion are located in the outer shell, and the first fixing portion and the first elastic portion are connected; The first fixing portion is inserted into the inner side wall of the outer shell; the first elastic portion is located between the rotating structure and the first fixing portion; The rotating structure is used for abutting against the first elastic portion and driving the free end of the first elastic portion to move towards or away from the first fixing portion; When the free end of the first elastic portion moves towards or away from the first fixing portion, an alternating current signal is generated between the first elastic portion and the first fixing portion.

11. The flapping hydroelectric power device of claim 10, wherein, The flapping wing body further comprises a second fixing portion and a second elastic portion, the second fixing portion is connected with the second elastic portion, the second fixing portion is inserted into the inner side wall of the outer shell, and the rotating structure is located between the first elastic portion and the second elastic portion; The rotating structure is used for abutting against the second elastic portion and driving the free end of the second elastic portion to move towards or away from the second fixing portion; When the free end of the second elastic portion moves towards or away from the second fixing portion, an alternating current signal can be generated between the second elastic portion and the second fixing portion.

12. The flapping hydroelectric power apparatus of claim 11, wherein, The flapping body further comprises a connecting structure arranged between the first elastic part and the second elastic part and connected with the first elastic part and the second elastic part respectively.

13. The flapping hydroelectric power device of claim 12, wherein, The flapping body further comprises a rotating shaft and a second elastic structure, and the rotating shaft and the second elastic structure are located in the shell. The rotating shaft is inserted into the rotating structure and rotationally connected with the rotating structure; the rotating shaft is fixedly connected with the shell. The second elastic structure is sleeved on the rotating shaft, and one end of the second elastic structure is connected with the rotating structure and the other end is connected with the shell. The shell is mounted on the connecting rod, and the shell is rotationally connected with the connecting rod along the axial direction of the rotating shaft.

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