Wave energy collector based on friction power generation and gyroscopic effect

Abstract

The invention discloses a wave energy collector based on friction power generation and a gyroscopic effect. Comprising a copper electrode plate, a polytetrafluoroethylene (PTFE) film, a ratchet wheel, a bevel gear, a friction disc gasket, a rabbit hair plate, an acrylic plate, a flywheel pendulum and a lower circular plate. The flywheel pendulum at the top sensitively receives excitation of low-frequency waves in all directions of the outside, changes of the gravity center are converted into rotating motion of double shafts, the gyroscopic effect generated by rotation of flywheels can supplement precession rotation of the flywheels, the rabbit hair plate is further driven to rotate at the same frequency, and friction is generated between the rabbit hair plate and the stator PTFE. The mirror image ratchet mechanism enables the swing rod to drive the flywheel on the swing rod to rotate in the same direction in a self-adaptive mode no matter the swing rod rotates clockwise or anticlockwise, and therefore kinetic energy loss caused by direction changes is reduced. The system can effectively collect low-frequency wave vibration to provide electric energy for an existing low-power-consumption sensor in the ocean.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of marine renewable energy, and particularly relates to a wave energy collection device combining gyroscopic effect and friction nanometer power generation technology, which is suitable for providing a self-power supply solution for marine monitoring equipment. BACKGROUND

[0002] The application belongs to the technical field of marine renewable energy, and particularly relates to a wave energy collection device combining gyroscopic effect and friction nanometer power generation technology, which is suitable for providing a self-power supply solution for marine monitoring equipment. SUMMARY

[0003] The application aims to provide a wave energy collector based on friction power generation and gyroscopic effect, which adopts a rotating structure, utilizes a top gravity pendulum to sensitively receive low-frequency wave excitation in each direction of the external environment, converts the change of the center of gravity into a rotating motion of a double shaft, and drives the operation of the whole device. Compared with other wave energy collectors based on friction power generation and gyroscopic effect, the gyroscopic effect generated by the rotation of the flywheel of the device can supplement the swing torque of the flywheel pendulum. The mirror image ratchet mechanism can drive the flywheel on the pendulum rod to rotate counterclockwise regardless of the clockwise or counterclockwise rotation of the pendulum rod, thereby reducing the kinetic energy loss caused by the change of direction. The TENG part uses rabbit hair and a thin film for soft contact friction, which improves the durability and output performance of the friction part; and a multi-layer phase difference is used for superimposed output, which reduces the peak ratio of the output waveform.

[0004] To achieve the application, the technical scheme adopted is as follows: a wave energy collector based on friction power generation and gyroscopic effect, comprising: A wave energy collector based on friction power generation and gyroscopic effect, comprising a double shaft connecting piece, a shaft, a bearing stop ring, a horizontal shaft, a flywheel, a flange, a pawl, a pawl shaft coupling, a ceramic bearing, an umbrella ratchet, a large ratchet, a disc coupling, an M2 screw, a vertical shaft, a gasket, a copper electrode plate and a PTFE plate, a rabbit hair plate, a large ratchet support, an acrylic disc, a flange, and a flywheel pendulum.

[0005] The pawl is installed in the interior of the umbrella ratchet through the pawl shaft coupling, controls the rotation and stop of the umbrella ratchet, the mirror image umbrella ratchet and flywheel are fixed on the horizontal shaft through the pawl shaft coupling and the flange respectively to form a flywheel pendulum, the flywheel pendulum is connected to the vertical shaft through the double shaft connecting piece and the disc coupling to drive the rotation of the whole device.

[0006] The copper electrode plate and the PTFE plate are formed by processing two pieces of copper into a grid shape through a PCB process, then horizontally stacking and covering with a PTFE film to form a stator fixed with a device shell; rabbit hair is trimmed into a grid shape by using scissors and other construction tools, and is pasted onto a support plate to form a grid-shaped rabbit hair plate, the rabbit hair plate is connected with a flywheel pendulum through a screw, the flywheel pendulum drives the rabbit hair plate to rub against the PTFE, and the difference in electron gain and loss capacity causes the rabbit hair to carry a positive charge; due to the electrostatic induction effect, the rotation of the rabbit hair induces alternating charges on the copper electrode, generating alternating current.

[0007] When the flywheel pendulum drives the three-layer rabbit hair plate to rotate, the three-layer copper electrode plate and the PTFE plate are connected with the shell and do not rotate. The large ratchet wheel is fixedly connected with the acrylonitrile lower disc through a large ratchet wheel support and a gasket, and the large ratchet wheel and the mirror image umbrella ratchet wheel are meshed together. The bearing is placed in the double shaft connecting piece through a bearing stop ring. The large ratchet wheel support connects the acrylonitrile lower disc to support the upper and lower structures and the rotating structure.

[0008] Compared with the prior art, the present application has the following advantages and beneficial effects: 1. The mirror image ratchet mechanism has reversibility, which can realize clockwise rotation and counterclockwise rotation of the gravity pendulum, improving the flexibility and wave adaptability of the device; 2. The flywheel pendulum has the function of generating gyro effect on the basis of being a weight, reducing the space occupation, and the gyro effect accelerates the swing of the pendulum rod, so that the friction power generation frequency is accelerated; 3. The friction nanogenerator (TENG) part uses rabbit hair and film for soft contact friction, improving the durability and output performance of the friction part; 4. The horizontal shaft is made of carbon fiber material, and increasing the mass of the flywheel pendulum can increase the moment of inertia of the horizontal shaft.

[0009] 5. The design of a phase difference of 60° in each of the three friction power generation devices, combined with separate rectification output, can effectively reduce the peak-to-peak ratio and improve the stability and energy conversion efficiency of the output signal. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the installation schematic diagram of the present application; Figure 2 is a side view of the present application; Figure 3 is a copper electrode plate and a PTFE plate of the present application; Wherein: 1: double shaft connecting piece; 2: bearing; 3: bearing stop ring; 4: horizontal shaft; 5: flywheel; 6: flange plate; 7: pawl; 8: pawl coupling; 9 ceramic bearing; 10: umbrella ratchet; 11: large ratchet; 12: disc coupling; 13: M2 screw; 14: vertical shaft; 15: washer; 16: copper electrode plate and PTFE plate; 17: rabbit hair plate; 18: large ratchet support; 19: acrylic lower disc; 20: flange plate; 21: flywheel swing. DETAILED DESCRIPTION

[0011] A wave energy collector based on friction power generation and gyro effect, comprising a double shaft connecting piece (1), a bearing (2), a bearing stop ring (3), a horizontal shaft (4), a flywheel (5), a flange plate (6), a pawl (7), a pawl coupling (8), a ceramic bearing (9), an umbrella ratchet (10), a large ratchet (11), a disc coupling (12), an M2 screw (13), a vertical shaft (14), a washer (15), a copper electrode plate and PTFE plate (16), a rabbit hair plate (17), a large ratchet support (18), an acrylic lower disc (19), a flange plate (20), and a flywheel swing (21).

[0012] Its characterized in that the pawl (7) is installed inside the umbrella ratchet (10) through the pawl coupling (8), controls the rotation and stop of the umbrella ratchet (10), and the mirror image umbrella ratchet (10) and flywheel (5) are respectively fixed on the horizontal shaft (4) through the pawl coupling (8) and the flange plate (6) to form the flywheel swing (21), and the flywheel swing (21) is connected to the vertical shaft (14) through the double shaft connecting piece (1) and the disc coupling (12) to drive the whole device to rotate.

[0013] The copper electrode plate and PTFE plate (16) are formed by horizontally stacking two copper plates processed into a grid shape and covering them with a PTFE film through the PCB process, and are fixed to the device shell as a stator; the rabbit hair is trimmed into a grid shape using scissors and other construction tools, and is pasted onto a support plate to form a grid-shaped rabbit hair plate (17), the rabbit hair plate (17) is connected to the flywheel swing (21) through a screw, the flywheel swing (21) drives the rabbit hair plate (17) to rub against the PTFE, and a positive charge is generated on the rabbit hair due to the difference in electron gain and loss ability; due to the electrostatic induction effect, the rotation of the rabbit hair induces alternating charges on the copper electrode, generating alternating current.

[0014] When the flywheel pendulum (21) drives the three-layer rabbit hair plate to rotate, the three-layer copper electrode plate and PTFE plate (16) are connected with the shell and do not rotate. The large ratchet wheel (11) is fixedly connected with the acryl lower disc (19) through the large ratchet wheel support (18) and the gasket (15), and the large ratchet wheel (11) and the mirror image umbrella ratchet wheel (10) are meshed together. The bearing is placed in the double shaft connecting piece (1) through the bearing stop ring (3). The large ratchet wheel support (18) connects the acryl lower disc (19) to support the upper and lower structures and the rotating structure.

[0015] Working principle: when the energy collector is subjected to low-frequency wave energy, the flywheel pendulum (21) starts to swing in all directions under the influence of gravity, thereby driving the three-layer rabbit hair plate (17) to rotate, and the rabbit hair rubs against the copper electrode plate and PTFE plate (16) fixed on the insulating material plate to generate electricity. Then, due to the relative rotation of the rabbit hair and the PTFE, free electrons are induced to transfer between the two copper electrodes, generating displacement current and realizing friction power generation.

[0016] Preferably, the mirror image umbrella ratchet wheel (10) mechanism has reversibility, and can realize self-adaptive clutching of the umbrella ratchet wheel (10) when the flywheel pendulum (21) rod is excited in any direction, thereby driving the flywheel (5) to rotate in the same direction, and improving the flexibility and wave adaptability of the device.

[0017] Preferably, the three-layer rabbit hair plate (17) is designed with a phase difference of 60° for each piece, and combined with separate rectification output, which can effectively reduce the wave crest ratio and improve the stability of the output signal and the energy conversion efficiency.

[0018] Preferably, the transverse shaft (4) is made of carbon fiber material, and increasing the mass of the flywheel pendulum (21) can increase the rotational inertia of the transverse shaft (4).

[0019] Preferably, increasing the gear ratio of the large ratchet wheel (11) and the mirror image umbrella ratchet wheel (10) can increase the rotation frequency of the rabbit hair plate (17) and increase the collected energy.

[0020] It should be noted that the above technical features continue to be combined to form various embodiments not listed above, which are considered to be within the scope of the present application. Furthermore, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall fall within the scope of the appended claims of the present application.

Claims

1. A wave energy harvester based on frictional electricity generation and gyroscopic effect, characterized in that, It comprises: The shell comprises an acrylic lower round plate, a large ratchet wheel, and a large ratchet wheel support. The acrylic lower round plate is horizontally placed with the large ratchet wheel support as the spacing. The large ratchet wheel support is perpendicular between the lower round plate and the large ratchet wheel, and the round plate is fixedly connected with the large ratchet wheel. The flywheel pendulum comprises a flywheel, an umbrella ratchet wheel, a horizontal shaft, a bearing, and a double-shaft connecting piece. The flywheel is connected with the horizontal shaft through a flange plate, and the umbrella ratchet wheel is installed at both ends of the horizontal shaft. The horizontal shaft is installed on the double-shaft connecting piece through the bearing. The friction nanogenerator device comprises an electron loss material plate, an insulating material plate, and a copper electrode plate. The insulating material plate, the copper electrode plate, and the large gear support and the acrylic lower round plate are fixedly connected. The electron loss material plate is fixedly connected with the flywheel pendulum and rotates with the vertical shaft. When the energy collector is subjected to low-frequency wave energy, the flywheel pendulum drives the three-layer rabbit hair plate to rotate through the rotating shaft body. The rabbit hair is rubbed to be electrified with the PTFE plate fixed on the insulating material plate. Then, due to the relative rotation of the hair and the PTFE, free electrons are induced to transfer between the two Cu electrodes, generating displacement current and realizing friction power generation. At the same time, the flywheel mass block composed of the fixed disc and the rotating disc also rotates and rubs under the movement of the gravity pendulum, realizing friction power generation.

2. The wave energy harvester based on frictional electricity generation and gyroscopic effect as claimed in claim 1, wherein, The mirror image ratchet wheel is centrally mirror-symmetrically connected with the horizontal shaft at both ends. Under the driving of the flywheel mass block, the device can feel wave energy in any direction through the one-way intermittent motion characteristics of the ratchet wheel, realizing flexible conversion of the clockwise or counterclockwise rotation of the gravity pendulum.

3. The wave energy harvester based on frictional electricity generation and gyroscopic effect as claimed in claim 1, wherein, The electron loss material plate is rabbit hair, and the insulating material plate is a polytetrafluoroethylene (PTFE) film. Two pieces of copper are processed into a grid shape through the PCB process, then stacked horizontally, and then the PTFE film of the same shape is covered on the copper electrode as the stator.

4. The wave energy harvester based on frictional electricity generation and gyroscopic effect as claimed in claim 1, wherein, In order to generate a voltage with a smaller wave peak ratio when the friction power generation disc is rectified and output in series, the phase difference of each layer of the three-layer friction power generation disc is 60°.

5. The wave energy harvester based on frictional electricity generation and gyroscopic effect as claimed in claim 1, wherein, The flywheel mass block is connected to the horizontal shaft through a fixing fitting. After two bearings are fixed in the appropriate positions on the horizontal shaft and the vertical shaft through a bearing stop ring, the double shafts are assembled together through a double-shaft connecting piece, so that the horizontal shaft and the vertical shaft can rotate simultaneously.

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