CN111980845A - Wave energy conversion device and conversion method - Google Patents
Wave energy conversion device and conversion method Download PDFInfo
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- CN111980845A CN111980845A CN202010804843.2A CN202010804843A CN111980845A CN 111980845 A CN111980845 A CN 111980845A CN 202010804843 A CN202010804843 A CN 202010804843A CN 111980845 A CN111980845 A CN 111980845A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention belongs to the technical field of wave vibration power generation devices, and particularly relates to a wave energy conversion device which comprises a transmission swing rod, a fixed seat, a transmission mechanism and an energy collection mechanism, wherein the transmission mechanism and the energy collection mechanism are arranged on the fixed seat; the transmission mechanism comprises a transmission shaft, an excitation shaft and an excitation swing rod, the excitation swing rod is fixed on the excitation shaft, the transmission swing rod is fixed on the transmission shaft, and the transmission shaft is in rotating fit with the excitation shaft through a gear; when waves drive the transmission swing rod to swing, the transmission swing rod drives the transmission shaft to move and is linked with the excitation shaft to rotate, so that the excitation swing rod presses the magnetostrictive sheet to cause the magnetostrictive sheet to generate strain, the stress changes to cause the magnetic induction intensity to change under the action of a magnetic field, and the induction coil generates electromotive force to realize energy conversion.
Description
Technical Field
The invention belongs to the technical field of wave vibration power generation devices, and particularly relates to a wave energy conversion device and a conversion method.
Background
In the world, as nonrenewable traditional energy sources such as fossil energy are continuously exploited and utilized, energy sources become more and more scarce, so that development of new energy sources becomes extremely important, but at present, novel energy sources such as solar energy and wind energy are easily limited by various aspects such as environment, weather and regions. Wave energy is used as a green renewable energy widely existing in ocean, river and river domains, has large reserves and wide distribution, and is not limited by natural conditions. In the ocean, river and river areas, waves can be generated by blowing of natural wind, and the passing passenger ships, cargo ships, ferries and the like can also cause the waves, so that the frequency of the waves can be increased, and the wave energy is a novel energy with great potential.
At present, with the increasing development of wireless sensor technology, the application of wireless sensors in oceans and river basins is on an increasing trend, and the traditional power supply of the wireless sensors is mainly a storage battery, so that the problems of large battery size, environmental pollution, short continuous power supply time and the like exist. Therefore, the problem that the energy supply of the wireless sensor becomes the important problem of the popularization and application of the sensor on the ocean and the river is solved, and the effective mode for replacing the traditional power supply mode is realized by collecting the energy in the surrounding environment and converting the energy into the electric energy.
In the prior art, the wave vibration energy collection technology can be divided into electromagnetic type, piezoelectric type, mechanical type and magnetostriction type. For example, patent application No. 202010047356.6 discloses an omnidirectional piezoelectric electromagnetic composite wave energy collecting device, in which a coil is placed on the bottom surface of an internal structure, a surrounding vertical piezoelectric plate is installed around the coil, and a pendulum bob freely swings in all directions to serve as an excitation mode. However, the electromagnetic collecting structure in the device is large, the output voltage is not high, the piezoelectric plate is brittle, the swinging amplitude of the pendulum bob is not limited, strong impact is often generated on the device, the adaptability in a complex environment of the sea level is poor, and the service life of the device is seriously influenced.
For example, patent application No. 201520838551.5 discloses a near-shore mechanical wave energy collection device, in which a floating device is matched with a gear, a ratchet wheel and other transmission mechanisms to drive a generator to generate power, so that the device has good environmental adaptive energy.
Magnetostriction is realized based on the performance of a magnetostrictive material, that is, under the condition that the magnetostrictive material is stressed or generates strain, the magnetic flux density in the material is correspondingly changed, and current is induced in a coil, so that mechanical energy is firstly converted into magnetic energy, and then the magnetic energy is converted into electric energy. Most magnetostrictive materials adopt piezoelectric materials, Terfenol-D and the like, but the materials are expensive and have poor tensile strength, and common piezoelectric materials have hard brittleness or low energy conversion rate. If the magnetostrictive material Galfenol is adopted to convert wave energy into electric energy through the energy collecting device, the problems of difficulty in remote energy supply, high cost and the like of a sensor and an indicator light can be solved, energy can be saved, and the method belongs to the new application field of energy collecting technology.
Disclosure of Invention
Based on the above-mentioned shortcomings and drawbacks of the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems of the prior art, in other words, to provide a solution to one or more of the above-mentioned needs.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wave energy conversion device comprises a transmission swing rod, a fixed seat, a transmission mechanism and an energy collection mechanism, wherein the transmission mechanism and the energy collection mechanism are arranged on the fixed seat; the magnetostrictive sheet is fixedly connected with a linear spring, and the linear spring is fixed on the fixed seat; the transmission mechanism comprises a transmission shaft, an excitation shaft and an excitation swing rod, the excitation swing rod is fixed on the excitation shaft, the transmission swing rod is fixed on the transmission shaft, and the transmission shaft is in rotating fit with the excitation shaft through a gear; when waves drive the transmission swing rod to swing, the transmission swing rod drives the transmission shaft to move and is linked with the excitation shaft to rotate, so that the excitation swing rod presses the magnetostrictive sheet to cause the magnetostrictive sheet to generate strain, the stress changes to cause the magnetic induction intensity to change under the action of a magnetic field, and the induction coil generates electromotive force to realize energy conversion.
Preferably, one end of the magnetostrictive sheet is fixed on the side wall of the fixed seat, and the other end of the magnetostrictive sheet protrudes out of the magnetic conduction shell to form a cantilever beam.
As a preferred scheme, a first bracket, a second bracket and a third bracket are fixedly arranged on the fixed seat, and the transmission shaft is arranged on the first bracket and is in running fit with the first bracket; the excitation shaft is arranged on the second bracket and is in running fit with the second bracket; the magnetic conduction shell is fixed on the third support, and the end part of the magnetic conduction shell is fixedly connected with the side wall of the fixing seat.
As a preferred scheme, one end of the transmission shaft is connected with the transmission swing rod, the other end of the transmission shaft is connected with the complete gear through a flat key, the excitation shaft is connected with the incomplete gear through a flat key, and the incomplete gear and the complete gear are meshed with each other; when the excitation swing rod exceeds a preset swing interval, the complete gear and the incomplete gear enter a non-meshing area so as to correspond to the allowable swing interval of the excitation swing rod.
As a preferred scheme, one end of the excitation swing rod is fixedly connected with the excitation shaft, the other end of the excitation swing rod is fixedly connected with the steel ball, and the steel ball is in contact fit with the magnetostrictive sheet.
As preferred scheme, the lateral wall and the diapire of fixing base are equipped with the recess, and the cooperation sealed shell is pegged graft in the recess to the installation sealing strip seals up.
Preferably, the transmission shaft protrudes out of the sealing shell, the transmission shaft is fixedly connected with the sealing shell through a bearing, and a sealing ring is arranged for sealing.
Preferably, the magnetostrictive sheet is a Galfenol sheet, a beryllium bronze sheet is coated on the bottom surface of the Galfenol sheet, and the Galfenol sheet is connected with the Galfenol sheet through epoxy resin.
Preferably, the side wall of the fixing seat is fixedly connected with the support.
A method of converting wave energy conversion apparatus according to any of the preceding claims, comprising the steps of:
s1, the transmission swing rod is driven by waves to move, the transmission swing rod drives the transmission shaft to move and is linked with the excitation shaft to rotate, and the excitation shaft is linked with the excitation swing rod to swing, so that the excitation swing rod presses the magnetostrictive sheet to cause the magnetostrictive sheet to deform, and the linear spring is compressed;
s2, under the action of the restoring force of the linear spring, the magnetostrictive sheet restores to the original state, stress and strain are generated inside the magnetostrictive sheet, and the direction of an internal magnetic domain deflects;
s3, providing a bias magnetic field for the energy collecting mechanism by the permanent magnet, enabling the magnetic domain direction to be turned to the direction consistent with the bias magnetic field under the combined action of the bias magnetic field and stress, enabling the magnetic domain shape in the magnetostrictive sheet to change due to the change of the internal magnetic domain direction, and changing the magnetic induction intensity of the induction coil;
s4, generating induced electromotive force in the induction coil by the changed magnetic induction intensity;
and S5, transmitting the electric energy to the electric equipment through a lead.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention converts the kinetic energy and the potential energy in the wave energy into mechanical energy, converts the mechanical energy into electric energy and stores the electric energy to supply energy to the shore hydrological detection sensor and the indicator lamp, thus saving the supply of an external power supply and becoming a new energy source with energy saving and environmental protection.
2. The invention limits the maximum swing amplitude of the excitation swing rod by adopting the incomplete gear, and avoids strong impact of the excitation swing rod on the energy collecting mechanism caused by too large waves.
3. The invention has good stability and strong environment adaptability, can normally work in severe environments such as rainy days and the like by adopting a sealing mode, and can be installed at the bank side to avoid the corrosion of seawater.
4. The invention has high reliability, long service life and high energy conversion efficiency, and has better pressure resistance and fatigue resistance and high electromechanical coupling coefficient compared with piezoelectric type and electromagnetic type based on magnetostrictive energy collection technology.
5. The invention has simple structure, easy processing, convenient installation and recovery and wide application range.
Drawings
FIG. 1 is a schematic view of the internal assembly of a wave converting apparatus according to a first embodiment of the present invention;
fig. 2 is a schematic view of an overall installation structure of a wave converting apparatus according to a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the energy harvesting mechanism of a wave conversion device according to a first embodiment of the invention;
fig. 4 is a schematic view of the installation of the wave conversion device and the support according to the second embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
The first embodiment is as follows:
as shown in fig. 1 to 3, the present embodiment provides a wave energy conversion device, which includes a transmission swing rod 3, a fixed seat 1, and a transmission mechanism and an energy collecting mechanism 2 fixedly mounted on the fixed seat 1.
The energy collecting mechanism 2 comprises a magnetostrictive sheet, an induction coil 2-3, a permanent magnet 2-4 and a magnetic conduction shell 2-5, wherein the magnetostrictive sheet is a Galfenol sheet 2-1, the bottom surface of the Galfenol sheet 2-1 is coated with a beryllium bronze sheet 2-2, one end of the magnetostrictive sheet is fixed on the side wall of the fixed seat 1, and the other end of the magnetostrictive sheet protrudes out of the magnetic conduction shell 2-5 to form a cantilever beam. The Galfenol sheet 2-1 and the beryllium bronze sheet 2-2 are bonded and connected through epoxy resin, so that the magnetostrictive sheet cantilever beam can bear large bending amplitude. The induction coil 2-3 is wound on the magnetostrictive sheet, and the permanent magnet 2-4 is arranged on two sides of the induction coil 2-3 and fixed in the magnetic conduction shell 2-5. The induction coil 2-3 is directly wound on the magnetostrictive sheet cantilever beam, so that the gap between the magnetostrictive sheet cantilever beam and the induction coil 2-3 can be reduced, and the energy loss is reduced; the permanent magnets 2-4 are fixed on the upper top surface and the lower top surface of the magnetic conduction shell 2-5 in a magnetic bonding mode, and the bias magnetic field adopts a mode that the permanent magnets 2-4 are placed up and down.
The transmission mechanism comprises a transmission shaft 4, an excitation shaft 5 and an excitation swing rod 6, the excitation swing rod 6 is fixed on the excitation shaft 5, the transmission swing rod 3 is fixed on the transmission shaft 4, and the transmission shaft 4 is in rotating fit with the excitation shaft 5 through a gear. Two ends of the transmission shaft 4 are respectively and fixedly connected with the transmission swing rod 3 and the complete gear 41, the excitation shaft 5 is fixedly connected with the incomplete gear 51, and the incomplete gear 51 is connected with the excitation shaft 5 through a flat key; the complete gear 41 is connected with the transmission shaft 4 through a flat key. The incomplete gear 51 and the complete gear 41 are engaged with each other. When the wind waves are too large and exceed the allowed swing range of the excitation swing rod 6, the complete gear 41 of the transmission shaft 4 and the incomplete gear 51 of the excitation shaft 5 enter a non-meshing area, and the excitation shaft 5 and the transmission shaft 4 slip to correspond to the allowed swing range of the excitation swing rod 6. The maximum swing amplitude of the excitation swing rod 6 is limited through the incomplete gear 51, and strong impact of the excitation swing rod 6 on the energy collecting mechanism caused by too large waves is avoided.
A first bracket 11, a second bracket 12 and a third bracket 13 are fixedly arranged on the fixed seat 1, the transmission shaft 4 is arranged on the first bracket 11, and the first bracket is fixedly connected with the lower end surface of the fixed seat 1 through threads; the transmission shaft 4 and the first bracket are fixedly connected through a bearing. The excitation shaft 5 is arranged on the second bracket 12 and is in rotating fit with the second bracket 12; the second bracket is connected and fixed with the fixed seat 1 in a threaded manner; the excitation shaft 5 and the second bracket 12 are fixedly connected through a bearing. The magnetic conduction shell 2-5 is fixed on the third bracket 13, and the end part of the magnetic conduction shell 2-5 is fixedly connected with the side wall of the fixed seat 1. The upper surface of the third support 13 is fixed with the lower surface of the magnetic conduction shell 2-5 in a welding mode, and the lower end of the third support 13 is fixedly connected with the lower end face of the fixed seat 1 through threads.
The magnetostrictive sheet is fixedly connected with a linear spring 14, and the linear spring 14 is fixed on the fixed seat 1. Fixing the magnetostrictive sheet cantilever beam wound with the induction coils 2-3 on the side wall of the fixed seat 1 in a threaded connection mode; the magnetic conduction shell 2-5 penetrates through the magnetostrictive sheet cantilever beam and is installed in the square groove in the side wall of the fixed seat 1, so that the device is convenient to disassemble. The lower end of the linear spring 14 and the lower end face of the fixed seat 1 are screwed in and fixed through the groove hole, and the upper end of the linear spring 14 and the magnetostrictive sheet cantilever beam are fixed in a line binding mode, so that unpredictable impact can be avoided.
One end of the excitation swing rod 6 is fixedly connected with the excitation shaft 5, the other end of the excitation swing rod is fixedly connected with the steel ball 61, and the steel ball 61 is in contact fit with the magnetostrictive sheet. The excitation swing rod 6 and the steel ball 61 are fixedly connected in a welding mode; the excitation swing rod 6 is fixedly connected with the excitation shaft 5 through bolts and nuts.
The lateral wall and the diapire of fixing base 1 are equipped with the recess, and the cooperation seal shell 7 is pegged graft in the recess to the installation sealing strip seals up. The transmission shaft 4 protrudes out of the sealing shell 7, the transmission shaft 4 is fixedly connected with the sealing shell 7 through a bearing, and a sealing ring is arranged for sealing. The right end face of the sealing shell 7 is fixed with the transmission shaft 4 through a rolling bearing, and a rolling bearing sealing ring is used for sealing; the transmission swing rod 3 and the transmission shaft 4 are connected and fixed through bolts and nuts.
The energy collecting mechanism of the embodiment adopts a magnetostriction type, Galfenol sheets are selected as materials, wave energy on the shore of ocean and river basin is converted and collected, and the collected energy is stored to supply energy to a sensor and an indicator light on the shore.
The Galfenol sheet has more excellent performance, low price, better ductility, high tensile strength and pressure resistance, and good pressure resistance, and can perfectly overcome the defect that PZT is easy to generate stress fatigue. Electromechanical coupling coefficient K of Galfenol sheet material33About 0.5, and the electromechanical coupling coefficient K of the common piezoelectric material PVDF33About 0.1, Galfenol flake material has a higher energy conversion than PVDF material, is also more sensitive than piezoelectric material, and can produce higher voltages for small amplitude vibrations.
The working principle is as follows:
when wind blows on the water surface and a ship passes through the water surface, waves are generated on the water surface, kinetic energy and potential energy in the waves can push a transmission swing rod in a wave energy conversion device to swing, the transmission swing rod can drive a transmission shaft to rotate, so that a complete gear is meshed with an incomplete gear, an excitation swing rod connected to an excitation shaft can swing up and down with a certain amplitude along with the rotation of the excitation shaft through the mutual rotation between the gears, steel balls on the excitation swing rod can hit magnetostrictive sheet cantilever beams in an energy collection mechanism through the up-and-down swing of the excitation swing rod, the damage to the cantilever beams due to the fact that the swing amplitude of the excitation swing rod is too large is avoided, the up-and-down swing amplitude of the excitation swing rod is limited through the incomplete gear, and when the swing amplitude exceeds a limit range, sliding. The magnetostrictive sheet in the energy collecting mechanism is a Galfenol sheet, and a beryllium bronze sheet elastic substrate layer is additionally arranged below the Galfenol sheet, so that the magnetostrictive sheet cantilever beam can bear larger bending deformation, and the energy collecting mechanism can be well protected. When the steel ball on the excitation swing rod strikes the magnetostrictive sheet, the magnetostrictive sheet can be bent and deformed, the linear spring below the cantilever beam is compressed, and when the steel ball is lifted and separated, the magnetostrictive sheet returns to the original shape under the action of the restoring force of the linear spring, and the magnetostrictive sheet is continuously bent and deformed repeatedly. When the water surface is calm and has no waves, the steel ball on the excitation swing rod in the wave energy conversion device can press on the magnetostrictive sheet cantilever beam in the energy collection mechanism, so that the magnetostrictive sheet generates certain bending deformation, stress and strain are generated inside the magnetostrictive sheet, and the direction of an internal magnetic domain deflects. The permanent magnet provides a bias magnetic field for the energy collecting mechanism, the cantilever beam of the magnetostrictive sheet is under the action of the bias magnetic field generated by the permanent magnet in the magnetic conduction shell, when the cantilever beam is subjected to the bending deformation of stress, according to the Villari effect of the magnetostrictive material, the change of the stress state of the material can cause the change of the induction intensity of the material, the bias magnetic field enables the magnetic domain direction to be turned to the direction consistent with the bias magnetic field, the change of the internal magnetic domain direction of the magnetostrictive sheet causes the change of the form of the peripheral magnetic field, at the moment, the magnetic flux in the induction coil wound on the magnetostrictive sheet can be changed, and the magnetic induction intensity of the induction coil is. According to the Faraday's law of electromagnetic induction, the changing magnetic induction intensity can generate induced electromotive force in the induction coil, so that the conversion from wave energy to mechanical energy and then to electric energy is realized. The converted electrical energy may power the wireless sensor or other components.
The wave energy conversion device of the embodiment has a small volume, and can be installed on a buoy on the sea surface in a threaded connection mode for convenient installation.
The present embodiment further provides a conversion method for a wave energy conversion device, including the following steps:
s1, the transmission swing rod is driven by waves to move, the transmission swing rod drives the transmission shaft to move and is linked with the excitation shaft to rotate, and the excitation shaft is linked with the excitation swing rod to swing, so that the excitation swing rod presses the magnetostrictive sheet to cause the magnetostrictive sheet to deform, and the linear spring is compressed;
s2, under the action of the restoring force of the linear spring, the magnetostrictive sheet restores to the original state, stress and strain are generated inside the magnetostrictive sheet, and the direction of an internal magnetic domain deflects;
s3, the permanent magnet provides a bias magnetic field for the energy collecting mechanism, the bias magnetic field and the stress act together to make the magnetic domain direction turn to the direction consistent with the bias magnetic field, the change of the magnetic domain direction in the magnetostrictive sheet causes the change of the peripheral magnetic field form, and the magnetic induction intensity of the induction coil changes;
s4, generating induced electromotive force in the induction coil by the changed magnetic induction intensity;
and S5, transmitting the electric energy to the electric equipment through a lead.
Example two:
the wave energy conversion device provided by the embodiment is different from the first embodiment in that:
as shown in fig. 4, the side wall of the fixing base is fixedly connected with the support 8 in this embodiment. The wave energy conversion structure and the support are connected and fixed through bolts and nuts, and then the wave energy conversion structure is placed at a proper water depth on the bank. The water flow field without the dike wall is convenient for energy conversion and collection, and has convenient installation and wide application range. For a watershed with a dike wall, the wave energy conversion device is fixedly connected with an expansion bolt arranged on the dike wall through a screw hole and a nut, and the installation height can be determined according to the actual environment condition of a river.
Other specific structures and implementation steps can be found in the first embodiment.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. A wave energy conversion device is characterized by comprising a transmission swing rod, a fixed seat, a transmission mechanism and an energy collection mechanism, wherein the transmission mechanism and the energy collection mechanism are arranged on the fixed seat; the magnetostrictive sheet is fixedly connected with a linear spring, and the linear spring is fixed on the fixed seat; the transmission mechanism comprises a transmission shaft, an excitation shaft and an excitation swing rod, the excitation swing rod is fixed on the excitation shaft, the transmission swing rod is fixed on the transmission shaft, and the transmission shaft is in rotating fit with the excitation shaft through a gear; when the wave drives the transmission swing rod to swing, the transmission swing rod drives the transmission shaft to move and is linked with the excitation shaft to rotate, so that the excitation swing rod presses the magnetostrictive sheet to cause the magnetostrictive sheet to generate strain, the stress change causes the change of induction intensity under the action of a magnetic field, and the induction coil generates electromotive force to realize energy conversion.
2. The wave energy conversion device according to claim 1, wherein one end of the magnetostrictive sheet is fixed on the side wall of the fixed seat, and the other end of the magnetostrictive sheet protrudes out of the magnetically conductive housing to form a cantilever beam.
3. The wave energy conversion device according to claim 1, wherein a first bracket, a second bracket and a third bracket are fixedly mounted on the fixed seat, and the transmission shaft is mounted on the first bracket and is in rotating fit with the first bracket; the excitation shaft is arranged on the second bracket and is in running fit with the second bracket; the magnetic conduction shell is fixed on the third support, and the end part of the magnetic conduction shell is fixedly connected with the side wall of the fixing seat.
4. The wave energy conversion device according to claim 1, wherein one end of the transmission shaft is connected with the transmission swing rod, the other end of the transmission shaft is connected with the complete gear through a flat key, the excitation shaft is connected with the incomplete gear through a flat key, and the incomplete gear and the complete gear are meshed with each other; when the excitation swing rod exceeds a preset swing interval, the complete gear and the incomplete gear enter a non-meshing area so as to correspond to the allowable swing interval of the excitation swing rod.
5. The wave energy conversion device according to claim 1, wherein one end of the excitation swing rod is fixedly connected with the excitation shaft, the other end of the excitation swing rod is fixedly connected with the steel ball, and the steel ball is in contact fit with the magnetostrictive sheet.
6. The wave energy conversion device according to claim 1, wherein the side wall and the bottom wall of the fixing seat are provided with grooves, sealing shells are inserted and matched in the grooves, and sealing strips are arranged in the grooves for sealing.
7. The wave energy conversion device according to claim 1, wherein the transmission shaft protrudes out of the sealing shell, the transmission shaft and the sealing shell are fixedly connected through a bearing, and a sealing ring is arranged for sealing.
8. The wave energy conversion device according to claim 1, wherein the magnetostrictive sheet is a Galfenol sheet, the bottom surface of the Galfenol sheet is coated with a beryllium bronze sheet, and the Galfenol sheet is connected with the Galfenol sheet through epoxy resin.
9. The wave energy conversion device of claim 1, wherein the side wall of the anchor block is fixedly connected to the carrier.
10. A method of converting wave energy conversion means according to any of claims 1 to 9, comprising the steps of:
s1, the transmission swing rod is driven by waves to move, the transmission swing rod drives the transmission shaft to move and is linked with the excitation shaft to rotate, and the excitation shaft is linked with the excitation swing rod to swing, so that the excitation swing rod presses the magnetostrictive sheet to cause the magnetostrictive sheet to deform, and the linear spring is compressed;
s2, under the action of the restoring force of the linear spring, the magnetostrictive sheet restores to the original state, stress and strain are generated inside the magnetostrictive sheet, and the direction of an internal magnetic domain deflects;
s3, providing a bias magnetic field for the energy collecting mechanism by the permanent magnet, enabling the magnetic domain direction to be turned to the direction consistent with the bias magnetic field under the combined action of the bias magnetic field and stress, enabling the magnetic domain shape in the magnetostrictive sheet to change due to the change of the internal magnetic domain direction, and changing the magnetic induction intensity of the induction coil;
s4, generating induced electromotive force in the induction coil by the changed magnetic induction intensity;
and S5, transmitting the electric energy to the electric equipment through a lead.
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| CN202010804843.2A CN111980845B (en) | 2020-08-12 | 2020-08-12 | Wave energy conversion device and conversion method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112649281A (en) * | 2020-12-29 | 2021-04-13 | 朗道供应链(苏州)有限公司 | Impact testing machine |
| CN112683376A (en) * | 2021-01-12 | 2021-04-20 | 杭州电子科技大学 | Self-powered dynamic weighing device based on magnetostrictive material and working method |
| CN113864103A (en) * | 2021-09-24 | 2021-12-31 | 广州大学 | Energy acquisition device based on wave energy |
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| CN205677757U (en) * | 2016-03-14 | 2016-11-09 | 河北工业大学 | A kind of imitative key type Wave power generation device |
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| CN112649281A (en) * | 2020-12-29 | 2021-04-13 | 朗道供应链(苏州)有限公司 | Impact testing machine |
| CN112649281B (en) * | 2020-12-29 | 2022-04-05 | 朗道供应链(苏州)有限公司 | Impact testing machine |
| CN112683376A (en) * | 2021-01-12 | 2021-04-20 | 杭州电子科技大学 | Self-powered dynamic weighing device based on magnetostrictive material and working method |
| CN113864103A (en) * | 2021-09-24 | 2021-12-31 | 广州大学 | Energy acquisition device based on wave energy |
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