CN112855416B - Wave energy power generation facility based on piezoelectric material - Google Patents

Wave energy power generation facility based on piezoelectric material Download PDF

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Publication number
CN112855416B
CN112855416B CN202110148086.2A CN202110148086A CN112855416B CN 112855416 B CN112855416 B CN 112855416B CN 202110148086 A CN202110148086 A CN 202110148086A CN 112855416 B CN112855416 B CN 112855416B
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China
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track groove
power generation
piezoelectric material
wave energy
generation device
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CN202110148086.2A
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CN112855416A (en
Inventor
王立国
武世轩
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Sun Yat Sen University
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Sun Yat Sen University
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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
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • 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
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention discloses a wave energy power generation device based on piezoelectric materials, which comprises a shell, the piezoelectric materials and balls; a closed track groove is formed in the shell, the piezoelectric material is laid on the surface of the track groove, the ball is placed in the track groove, and the rolling of the ball on the piezoelectric material is used for triggering the piezoelectric material to generate electricity; when the wave energy power generation device is applied, the wave energy power generation device can be installed in ocean detection equipment, and the ocean detection equipment can run in the sea, so that in the process that waves drive the wave energy power generation device to move, the ball rolls on the track groove piezoelectric material to generate electric energy.

Description

Wave energy power generation facility based on piezoelectric material
Technical Field
The invention relates to the technical field of power generation devices, in particular to a wave energy power generation device based on piezoelectric materials.
Background
The ocean occupies more than 70% of the earth's surface and has abundant resources inside. Scientific researchers in various countries always carry out observation and detection activities of marine resources by means of marine detection equipment (such as an AUV), and one of the main problems in the detection process of the marine resources is the long-term power supply problem of the equipment such as the AUV. At present, most of the applied AUVs can only realize short-term marine observation, and the carried energy is difficult to meet the requirement of long-term marine observation activities; equipment used in ocean and deep sea activities, such as aircraft, also faces long term power supply difficulties. Aiming at the problems, how to realize nearby energy taking and power supply for marine equipment has urgent practical significance.
Wave energy is considered as one of energy sources with higher development value in ocean resources, and is one of hot spots of current coastal national and regional research. Shore-based fixed and offshore floating wave power generation technologies are becoming more mature, for example, oscillating water column type wave power generation devices convert wave energy into kinetic energy of gas turbines, drive motors to convert the kinetic energy into electric energy, and other types of wave power generation devices, such as pendulum wave power generation devices, raft wave power generation devices and direct drive wave power generation devices, are available.
Wind power generation belongs to the technology developed more maturely at present, and developed and developing countries all use wind energy as one of available renewable energy sources. The wind energy generating device converts wind energy into kinetic energy of the fan, and then pushes the generator to convert the kinetic energy into electric energy. The marine environment has wind energy resources far higher than the land, and can realize the energy supply of marine equipment by using wind energy.
The solar power generation device directly converts solar energy into electric energy by using a device having a photo-electrochemical reaction. The solar energy comes from the sun, belongs to renewable energy, has large energy reserve, and the solar power generation device has low manufacturing cost, and is proved to be feasible by supplying energy to ocean equipment by means of the solar energy.
In addition, the energy forms which can be utilized in the marine environment also include forms of tidal energy, salt energy, temperature difference energy and the like, but the development values of the energy forms are smaller than those of wind energy and wave energy, so that the energy forms are not research hotspots at present.
However, the conventional wave energy and wind energy power generation device has a complex structure and high manufacturing cost, needs a mooring system for positioning during working, cannot work in extremely severe marine environments (such as typhoons), and is more difficult to meet the requirement of supplying energy to mobile marine equipment. Although the solar power generation device is simple in manufacturing cost compared with a wind energy and wave energy power generation device, the solar power generation device is low in power density and influenced by factors such as sunlight intensity and sunlight time, has no power generation effect in environments such as night, rainy days and non-surface seawater, and is difficult to meet the requirement of long-term energy supply for ocean observation equipment.
Disclosure of Invention
The invention aims to provide a wave energy power generation device based on a piezoelectric material, and the wave energy power generation device is used for solving the problem that the conventional ocean exploration equipment is short in endurance time.
In order to solve the technical problem, the invention provides a wave energy power generation device based on piezoelectric materials, which comprises a shell, the piezoelectric materials and balls; the piezoelectric power generation device is characterized in that a closed track groove is formed in the shell, the piezoelectric material is laid on the surface of the track groove, the ball is placed in the track groove, and the rolling of the ball on the piezoelectric material is used for triggering the piezoelectric material to generate power.
It is characterized in that the shell is circular, and the track groove is arc-shaped.
The piezoelectric actuator is characterized in that the track grooves are arranged in a ring shape along the shape track of the shell, and the piezoelectric material and the balls are arranged in the track grooves.
The piezoelectric material is characterized in that the cross section of the track groove is circular, and a circle of piezoelectric material is laid on the inner wall of the track groove in the circumferential direction.
The casing comprises a first casing and a second casing, and the first casing and the second casing are spliced to enclose the track groove; the piezoelectric material comprises a first piezoelectric layer and a second piezoelectric layer, the first piezoelectric layer is arranged in a position where the first shell is used for enclosing the track groove, and the second piezoelectric layer is arranged in a position where the second shell is used for enclosing the track groove.
The ball bearing is characterized in that cushion pads are arranged at the end parts of the track grooves and are used for being elastically abutted against the balls.
The ball bearing is characterized in that a spring is arranged at the end part of the track groove and is used for elastically abutting against the ball bearing.
The invention has the following beneficial effects:
when the wave energy power generation device is applied, the wave energy power generation device can be installed in ocean detection equipment, the ocean detection equipment can move in the sea, and the ball is placed in the track groove, and the rolling of the ball on the piezoelectric material is used for triggering the piezoelectric material to generate power, so that the ball can roll on the piezoelectric material to generate electric energy in the process that the wave energy power generation device is driven by waves to move.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram provided by an embodiment of the wave energy power generation device of the invention;
FIG. 2 is a schematic disassembled view of FIG. 1;
fig. 3 is a schematic view of a second housing assembly structure of fig. 1.
The reference numbers are as follows:
10. a housing; 11. a first housing; 12. a second housing;
20. a piezoelectric material; 21. a first piezoelectric layer; 22. a second piezoelectric layer;
30. a ball bearing;
40. a track groove; 41. and an end portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a wave energy power generation device based on piezoelectric materials, which is shown in figures 1 to 3 and comprises a housing 10, piezoelectric materials 20 and balls 30; the shell 10 is internally provided with a closed track groove 40, the piezoelectric material 20 is laid on the surface of the track groove 40, the ball 30 is placed in the track groove 40, and the rolling of the ball 30 on the piezoelectric material 20 is used for triggering the piezoelectric material 20 to generate electricity.
When the wave energy power generation device is applied, the wave energy power generation device can be installed in ocean detection equipment, and the ocean detection equipment can move in the sea, so that the wave energy power generation device can be driven by waves to move, the balls 30 roll on the piezoelectric materials 20, and the compressed piezoelectric materials 20 generate electric energy.
As shown in fig. 1 and 2, the housing 10 has an annular shape, and the track groove 40 has an arc shape.
After the housing 10 is set to be in a circular ring structure, the track grooves 40 can be arranged in a circular ring track, that is, on the basis that the track grooves 40 are set to have the same length, the structure can reduce the occupied space of the wave energy power generation device, and is more convenient for the balls 30 to move back and forth in the track grooves 40, so that the generation efficiency of electric energy is improved.
As shown in fig. 1 and 2, the track groove 40 is formed in a plurality, the plurality of track grooves 40 are arranged in a ring shape along the locus of the shape of the housing 10, and the piezoelectric material 20 and the balls 30 are disposed in each of the plurality of track grooves 40.
For example, in this embodiment, the four track grooves 40 are four, the four track grooves 40 are all arc-shaped, the four track grooves 40 are arranged in a circular track at equal intervals, and the four track grooves 40 are independent from each other, so that when the four balls 30 move in the four track grooves 40, the synchronous power generation of the plurality of piezoelectric materials 20 is realized, and since the four track grooves 40 are arranged at different positions, the balls 30 are ensured to be in rolling contact with the piezoelectric materials 20 under various conditions, the continuous power generation is realized, and the power generation efficiency is greatly improved.
As shown in fig. 1 and 2, the track groove 40 has a circular cross section, and the piezoelectric material 20 is circumferentially laid on the inner wall of the track groove 40.
After the track groove 40 is set to be circular in cross section, the shape of the track groove 40 can be matched with that of the ball 30, so that the ball 30 can roll smoothly in the track groove 40, the piezoelectric material 20 is laid in the circumferential direction of the track groove 40, the overall coverage of the piezoelectric material 20 on the inner part of the track groove 40 is ensured, and the ball 30 can be in contact with the piezoelectric material 20 in any motion state, so that the power generation efficiency is further improved.
As shown in fig. 1 and 2, the housing 10 includes a first housing 11 and a second housing 12, the first housing 11 and the second housing 12 are spliced to form a track groove 40; the piezoelectric material 20 includes a first piezoelectric layer 21 and a second piezoelectric layer 22, the first piezoelectric layer 21 is disposed in a portion of the first housing 11 for enclosing the rail groove 40, and the second piezoelectric layer 22 is disposed in a portion of the second housing 12 for enclosing the rail groove 40.
In the direction shown in the figure, the first casing 11 and the second casing 12 are arranged oppositely, the lower surface of the first casing 11 is recessed upwards to form an annular groove, and the upper surface of the second casing 12 is also recessed downwards to form an annular groove, so that after the first casing 11 and the second casing 12 are spliced and fixed by using a screw bolt, the two annular grooves are spliced to form the track groove 40; this embodiment, after arranging the piezoelectric material 20 as the first piezoelectric layer 21 and the second piezoelectric layer 22, facilitates the installation of the piezoelectric material 20 in the rail groove 40.
As shown in fig. 2, a buffer pad (not shown) may be disposed at each end 41 of the track groove 40, and the buffer pad is configured to elastically abut against the ball 30, and after the arrangement, the buffer pad can reduce the impact generated by the ball 30 during rolling, so as to provide better protection for the wave energy power generation device; similarly, a spring (not shown) may be disposed at the end 41 of the track groove 40, and the spring is used for elastically abutting against the ball 30, so that the spring not only can reduce the buffer generated when the ball 30 rolls, but also can push the ball 30 to roll reversely, thereby improving the rolling efficiency of the ball 30 and further improving the power generation efficiency.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (5)

1. A wave energy power generation device based on piezoelectric materials is characterized by comprising a shell, the piezoelectric materials and balls; a closed track groove is formed in the shell, the piezoelectric material is laid on the surface of the track groove, the ball is placed in the track groove, and the rolling of the ball on the piezoelectric material is used for triggering the piezoelectric material to generate power;
the section of the track groove is circular, and a circle of piezoelectric material is paved on the inner wall of the track groove in the circumferential direction;
the shell comprises a first shell and a second shell, and the first shell and the second shell are spliced and enclosed to form the track groove;
the piezoelectric material comprises a first piezoelectric layer and a second piezoelectric layer, the first piezoelectric layer is arranged in a position where the first shell is used for enclosing the track groove, and the second piezoelectric layer is arranged in a position where the second shell is used for enclosing the track groove.
2. The wave energy power generation device of claim 1, wherein the housing is annular and the track groove is arcuate.
3. The wave energy power generation device of claim 2, wherein the track groove is a plurality of track grooves, the plurality of track grooves are arranged in a ring shape along the shape track of the housing, and the piezoelectric material and the ball are disposed in each of the plurality of track grooves.
4. The wave energy generation device of claim 1, wherein the ends of the track groove are each provided with a cushion pad for resilient abutment with the ball.
5. The wave energy generation device of claim 1, wherein a spring is provided at an end of the track groove for resilient abutment with the ball.
CN202110148086.2A 2021-02-03 2021-02-03 Wave energy power generation facility based on piezoelectric material Active CN112855416B (en)

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CN112855416B true CN112855416B (en) 2022-01-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002262584A (en) * 2001-03-01 2002-09-13 Leben Co Ltd Generator using piezoelectric element, and generator using water power and wind power
CN202978758U (en) * 2012-12-14 2013-06-05 南京航空航天大学 Frequency-controllable piezoelectric power generator
CN103312216A (en) * 2013-06-06 2013-09-18 中山大学 Fluid piezoelectric power generation assembly and assembly set
CN204553073U (en) * 2015-01-22 2015-08-12 河海大学 A kind of ball type piezoelectric constant wave-type electric generator
CN108322083A (en) * 2018-03-30 2018-07-24 大连海事大学 Wave energy efficient generating apparatus based on friction nanometer power generator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5133106B2 (en) * 2008-03-26 2013-01-30 国立大学法人埼玉大学 Power generation device and light emitting buoy
CN202978756U (en) * 2012-11-21 2013-06-05 南京航空航天大学 Voltage-adjustable piezoelectric power generation device
CN204061540U (en) * 2014-05-28 2014-12-31 浙江师范大学 A kind of high-speed ball bearing with integrated monitoring device
US10069441B2 (en) * 2015-10-21 2018-09-04 Analog Devices, Inc. Electric energy scavenger device
CN106394744B (en) * 2016-06-15 2021-10-01 浙江师范大学 Bicycle warning lamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002262584A (en) * 2001-03-01 2002-09-13 Leben Co Ltd Generator using piezoelectric element, and generator using water power and wind power
CN202978758U (en) * 2012-12-14 2013-06-05 南京航空航天大学 Frequency-controllable piezoelectric power generator
CN103312216A (en) * 2013-06-06 2013-09-18 中山大学 Fluid piezoelectric power generation assembly and assembly set
CN204553073U (en) * 2015-01-22 2015-08-12 河海大学 A kind of ball type piezoelectric constant wave-type electric generator
CN108322083A (en) * 2018-03-30 2018-07-24 大连海事大学 Wave energy efficient generating apparatus based on friction nanometer power generator

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