CN105846721A - Asymmetric elastic beam used for water energy harvesting - Google Patents
Asymmetric elastic beam used for water energy harvesting Download PDFInfo
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- CN105846721A CN105846721A CN201610328602.9A CN201610328602A CN105846721A CN 105846721 A CN105846721 A CN 105846721A CN 201610328602 A CN201610328602 A CN 201610328602A CN 105846721 A CN105846721 A CN 105846721A
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- permanent magnet
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- vertical bar
- construction section
- elasticity beam
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000003306 harvesting Methods 0.000 title abstract 3
- 238000010276 construction Methods 0.000 claims description 48
- 239000012528 membrane Substances 0.000 claims description 23
- 238000003491 array Methods 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 6
- 230000005415 magnetization Effects 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 101100537937 Caenorhabditis elegans arc-1 gene Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
Classifications
-
- 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
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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
- F03B17/00—Other machines or engines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/04—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving coil systems and stationary magnets
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Percussion Or Vibration Massage (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention provides an asymmetric elastic beam used for water energy harvesting. The asymmetric elastic beam is characterized in that the asymmetric elastic beam is made of an elastic sheet material; and the asymmetric elastic beam structure is composed of an arcuate segment, a straight bar segment and an installation segment. The asymmetric elastic beam used for water energy harvesting is simple in structure, and is suitable for high speed and low speed water flow.
Description
Technical field
The present invention relates to a kind of flowing water energy harvester, particularly relate to a kind of Asymmetric Elasticity beam gathered for flowing water energy.
Background technology
Along with radio sensing network and low power dissipation electron product are at multi-field be used widely (such as environment and monitoring structural health conditions), the development of associated energy resource supply technology but relatively lags behind；There is the shortcomings such as the life-span is short, maintenance cost is high, pollution environment in conventional batteries, causes its application in some microelectronic product to be restricted；For the radio sensing network developed rapidly at present, for meeting the self energizing demand of each sensing node, energy acquisition technology has become forward position, world focus；Environment generally exists such as natural energy resources such as solar energy, heat energy, vibrational energy, wind energy, water energy, especially water sports contains huge renewable mechanical energy, water sports generally exists with forms such as river, tide, wave and water droplets, therefore, the most effectively gather the water generally existed in these environment and and electric energy can be converted into, obtained paying close attention to widely and studying.
At present water energy harvester is broadly divided into two classes: Rotary Water energy harvester and vortex energy collecting device (Rotary Water energy harvester as disclosed in Chinese invention patent CN102003213A, CN104696153A and CN103775272A)；Rotary Water energy harvester is generally with impeller, wheel disc or other gyro black assemblies, and actuating unit volume is big, the most not enough in terms of miniaturization and lightweight, and mechanical loss is relatively big, and energy conversion efficiency is relatively low, and output power density is less；It addition, Rotary Water energy harvester needs certain start velocity that rotary components just can be made to work, under the conditions of therefore can only being suitable to high flow velocities, it is impossible to effectively utilize low-speed flow physical ability.Can gather for realizing low flow velocity water, Chinese invention patent CN103762896A discloses a kind of serial arrangement twin columns body vortex and collects the device of low-speed flow kinetic energy, this device uses the twin columns body of serial arrangement, utilize upstream cylinder vibrational system increase downstream cylinder-piezoelectric vibration system carrys out intensity of flow, promote that downstream turns theme generation vortex, the elastic piezoelectric plate output electric energy that downstream cylinder body rear deforms upon, but this device needs extra upstream cylinder body as bluff body, adds somewhat to the complexity of structure；What is more important, this device cannot respond the current of high flow velocities effectively.
Summary of the invention
For the problem in background technology, the present invention proposes a kind of Asymmetric Elasticity beam gathered for flowing water energy, and its innovation is: described Asymmetric Elasticity beam uses flaky elastic material to make；The structure of Asymmetric Elasticity beam is made up of segmental arc, vertical bar section and construction section；The inner of described vertical bar section is connected with the inner of construction section, and the angle between vertical bar section and construction section is right angle, and the axial length of vertical bar section is more than the axial length of construction section, the structure bodily form such as L-shaped that vertical bar section and construction section are formed；One end of described segmental arc is connected with the outer end of vertical bar section, and the other end of segmental arc is connected with the outer end of construction section, the structure bodily form such as D-shaped that described segmental arc, vertical bar section and construction section are surrounded.
nullThe operation principle of the Asymmetric Elasticity beam of the present invention is: by the lateral surface of construction section by fixing for Asymmetric Elasticity beam on a support and be arranged in water body，The medial surface of construction section towards water body come to，That end relative with construction section on Asymmetric Elasticity beam is designated as free end，As shown in Figure 1，According to hydrodynamics，When current flow through from the free end of Asymmetric Elasticity beam，Just have eddy current produce in the both sides of Asymmetric Elasticity beam and rear and vortex-shedding occurs，Now，Asymmetry due to Asymmetric Elasticity girder construction，It is poor that Asymmetric Elasticity beam both sides are more readily formed dynamic pressure，Constant flow due to current，The both sides of Asymmetric Elasticity beam will form periodically excitation，Make Asymmetric Elasticity beam sustained vibration，We have only to arrange corresponding vibrational energy on Asymmetric Elasticity beam and gather structure，Can be achieved with being converted into water the purpose of electric energy.
Preferably, the lateral surface of described construction section forms the fixing connection of installed surface, installed surface and a pedestal.
Preferably, on the medial surface of described segmental arc, the position of close construction section is pasted with the first piezoelectric membrane.When vibration under Asymmetric Elasticity beam is in periodic excitation, Asymmetric Elasticity beam inherently can persistently deform upon, and according to piezoelectric effect, the first piezoelectric membrane persistently produces electricity output；
On the basis of the scheme of aforementioned first piezoelectric membrane, also can simultaneously on the medial surface of vertical bar section position near construction section paste the second piezoelectric membrane.The operation principle of the second piezoelectric membrane is identical with the first piezoelectric membrane, arranges the first piezoelectric membrane simultaneously and the second piezoelectric membrane can be effectively improved the collecting efficiency of energy.
Similarly, the second piezoelectric membrane also can be separately provided in the plan of establishment with the first piezoelectric membrane, and the most preferably, on the medial surface of described vertical bar section, the position near construction section is pasted with the second piezoelectric membrane.
In addition to aforesaid stickup piezoelectric membrane scheme, vibrational energy gathers structure also can use following scheme: the both sides of described Asymmetric Elasticity beam are each provided with a permanent magnet array, two permanent magnet array positions align, and the relative position between permanent magnet array with construction section keeps fixing；Formation field regions, region between two permanent magnet arrays；It is provided with transducer mount, during Asymmetric Elasticity beam vibration, in the range of the movement locus of transducer mount is positioned at field regions on the medial surface of described vertical bar section outer end；Described transducer mount uses lamellar composite magneto-electric transducer or the iron core of coiling.The iron core of lamellar composite magneto-electric transducer and coiling is magnetoelectricity transducer mount common in the art and electromagnet transduction device respectively, after they are combined with the present invention, transducer mount just can be under the drive of Asymmetric Elasticity beam, sustained vibration in magnetic field, thus produces electricity output；
Preferably, the structure of described permanent magnet array is the arcuate structure body that polylith permanent magnet is spliced, and the region that arcuate structure body covers is corresponding with the wobble area of transducer mount.When being embodied as, the permanent magnet that cross section can be used to be isosceles trapezoid is to be spliced into permanent magnet array.
Preferably, the arc-shaped transition section of indent it is provided with construction section at the root position described segmental arc being connected.Arc-shaped transition section can be effectively increased the deformation motility of Asymmetric Elasticity beam.
Preferably, on same permanent magnet array, the adjacent two pieces of permanent magnet magnetizations in position are in opposite direction；On two permanent magnet arrays, relative two pieces of permanent magnet magnetization directions, position are identical.
The method have the benefit that: propose a kind of Asymmetric Elasticity beam gathered for flowing water energy, this Asymmetric Elasticity girder construction is simple, all can be suitable for for high-velocity flow and low speed water.
Accompanying drawing explanation
Fig. 1, the structure of the present invention and principle schematic；
Fig. 2, the Asymmetric Elasticity girder construction schematic diagram of band piezoelectric membrane；
Fig. 3, the Asymmetric Elasticity girder construction schematic diagram of band stratiform compound magnetoelectric transducer；
Fig. 4, the Asymmetric Elasticity girder construction schematic diagram of band electromagnetic transducer；
Fig. 5, permanent magnet array magnetic pole schematic diagram；
In figure, the title corresponding to each labelling is respectively as follows: segmental arc 1, arc-shaped transition section 1-1, vertical bar section 2, construction section 3, pedestal the 4, first piezoelectric membrane the 5, second piezoelectric membrane 6, permanent magnet array 7, permanent magnet 7-1, lamellar composite magneto-electric transducer 8, the iron core 9 of coiling.
Detailed description of the invention
A kind of Asymmetric Elasticity beam gathered for flowing water energy, its innovation is: described Asymmetric Elasticity beam uses flaky elastic material to make；The structure of Asymmetric Elasticity beam is made up of segmental arc 1, vertical bar section 2 and construction section 3；The inner of described vertical bar section 2 is connected with the inner of construction section 3, and the angle between vertical bar section 2 and construction section 3 is right angle, and the axial length of vertical bar section 2 is more than the axial length of construction section 3, the structure bodily form such as L-shaped that vertical bar section 2 and construction section 3 are formed；One end of described segmental arc 1 is connected with the outer end of vertical bar section 2, and the other end of segmental arc 1 is connected with the outer end of construction section (3), the structure bodily form such as D-shaped that described segmental arc 1, vertical bar section 2 and construction section 3 are surrounded.
Further, the lateral surface of described construction section 3 forms installed surface, installed surface and a fixing connection of pedestal 4.
Further, on the medial surface of described segmental arc 1, the position of close construction section 3 is pasted with the first piezoelectric membrane 5.
Further, on the basis of being provided with the first piezoelectric membrane 5, on the medial surface of described vertical bar section 2, the position near construction section 3 is pasted with the second piezoelectric membrane 6.
Further, when being separately provided the second piezoelectric membrane 6, the second piezoelectric membrane 6 is pasted on the medial surface of described vertical bar section 2 position near construction section 3.
Further, the both sides of described Asymmetric Elasticity beam are each provided with a permanent magnet array 7, and two permanent magnet array 7 positions align, and the relative position between permanent magnet array 7 with construction section 3 keeps fixing；Formation field regions, region between two permanent magnet arrays 7；It is provided with transducer mount, during Asymmetric Elasticity beam vibration, in the range of the movement locus of transducer mount is positioned at field regions on the medial surface of described vertical bar section 2 outer end；Described transducer mount uses lamellar composite magneto-electric transducer 8 or the iron core 9 of coiling.
Further, the structure of described permanent magnet array 7 is the arcuate structure body that polylith permanent magnet 7-1 is spliced, and the region that arcuate structure body covers is corresponding with the wobble area of transducer mount.
Further, arc-shaped transition section 1-1 of indent it is provided with construction section 3 at the root position described segmental arc 1 being connected.
Further, on same permanent magnet array 7, the adjacent two pieces of permanent magnet 7-1 direction of magnetizations in position are contrary；On two permanent magnet arrays 7, the relative two pieces of permanent magnet 7-1 direction of magnetizations in position are identical.
Claims (9)
1. the Asymmetric Elasticity beam gathered for flowing water energy, it is characterised in that: described Asymmetric Elasticity beam uses flaky elastic material to make；The structure of Asymmetric Elasticity beam is made up of segmental arc (1), vertical bar section (2) and construction section (3)；The inner of described vertical bar section (2) is connected with the inner of construction section (3), angle between vertical bar section (2) and construction section (3) is right angle, the axial length of vertical bar section (2) is more than the axial length of construction section (3), the structure bodily form such as L-shaped that vertical bar section (2) and construction section (3) are formed；One end of described segmental arc (1) is connected with the outer end of vertical bar section (2), and the other end of segmental arc (1) is connected with the outer end of construction section (3), the structure bodily form such as D-shaped that described segmental arc (1), vertical bar section (2) and construction section (3) are surrounded.
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 1, it is characterised in that: the lateral surface of described construction section (3) forms the fixing connection of installed surface, installed surface and a pedestal (4).
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 1, it is characterised in that: on the medial surface of described segmental arc (1), the position near construction section (3) is pasted with the first piezoelectric membrane (5).
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 3, it is characterised in that: on the medial surface of described vertical bar section (2), the position near construction section (3) is pasted with the second piezoelectric membrane (6).
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 1, it is characterised in that: on the medial surface of described vertical bar section (2), the position near construction section (3) is pasted with the second piezoelectric membrane (6).
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 1, it is characterized in that: the both sides of described Asymmetric Elasticity beam are each provided with a permanent magnet array (7), two permanent magnet array (7) positions align, and the relative position between permanent magnet array (7) with construction section (3) keeps fixing；Formation field regions, region between two permanent magnet arrays (7)；It is provided with transducer mount, during Asymmetric Elasticity beam vibration, in the range of the movement locus of transducer mount is positioned at field regions on the medial surface of described vertical bar section (2) outer end；Described transducer mount uses lamellar composite magneto-electric transducer (8) or the iron core (9) of coiling.
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 6, it is characterized in that: the structure of described permanent magnet array (7) is the arcuate structure body that polylith permanent magnet (7-1) is spliced, the region that arcuate structure body covers is corresponding with the wobble area of transducer mount.
8. according to the Asymmetric Elasticity beam gathered for flowing water energy described in claim 1,2,3,4,5,6 or 7, it is characterised in that: it is provided with the arc-shaped transition section (1-1) of indent at the upper root position being connected with construction section (3) of described segmental arc (1).
The Asymmetric Elasticity beam gathered for flowing water energy the most according to claim 7, it is characterised in that: on same permanent magnet array (7), adjacent two pieces of permanent magnet (7-1) direction of magnetizations in position are contrary；On two permanent magnet arrays (7), relative two pieces of permanent magnet (7-1) direction of magnetizations in position are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328602.9A CN105846721B (en) | 2016-05-18 | 2016-05-18 | The Asymmetric Elasticity beam gathered for flowing water energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328602.9A CN105846721B (en) | 2016-05-18 | 2016-05-18 | The Asymmetric Elasticity beam gathered for flowing water energy |
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| Publication Number | Publication Date |
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| CN105846721A true CN105846721A (en) | 2016-08-10 |
| CN105846721B CN105846721B (en) | 2017-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108566117B (en) * | 2018-02-08 | 2019-06-04 | 中山大学 | A kind of differential piezoelectric generating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601180A (en) * | 2006-12-01 | 2009-12-09 | 哈姆丁格风能有限责任公司 | Utilize the generator of the vibration that fluid causes |
| KR20130010258A (en) * | 2011-07-18 | 2013-01-28 | 유재인 | Ocean stream powered device using piezoelectric element |
| US20150198139A1 (en) * | 2011-03-08 | 2015-07-16 | Sigma Design Company | Adaptive hydrokinetic energy harvesting system |
-
2016
- 2016-05-18 CN CN201610328602.9A patent/CN105846721B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601180A (en) * | 2006-12-01 | 2009-12-09 | 哈姆丁格风能有限责任公司 | Utilize the generator of the vibration that fluid causes |
| US20150198139A1 (en) * | 2011-03-08 | 2015-07-16 | Sigma Design Company | Adaptive hydrokinetic energy harvesting system |
| KR20130010258A (en) * | 2011-07-18 | 2013-01-28 | 유재인 | Ocean stream powered device using piezoelectric element |
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| CN105846721B (en) | 2017-10-27 |
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