CN106382191A - Wind-induced vibration piezoelectric energy collecting device - Google Patents
Wind-induced vibration piezoelectric energy collecting device Download PDFInfo
- Publication number
- CN106382191A CN106382191A CN201611058600.9A CN201611058600A CN106382191A CN 106382191 A CN106382191 A CN 106382191A CN 201611058600 A CN201611058600 A CN 201611058600A CN 106382191 A CN106382191 A CN 106382191A
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- China
- Prior art keywords
- wind
- slider part
- energy collecting
- collecting device
- sliding block
- Prior art date
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- 238000005452 bending Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 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
- H02N2/186—Vibration harvesters
-
- 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
- F05B2220/709—Piezoelectric means
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a wind-induced vibration piezoelectric energy collecting device. The wind-induced vibration piezoelectric energy collecting device comprises a left fixing part, a first sliding block component, flow preventing cylinders, a windward thin plate, a bent beam, a piezoelectric cantilever beam component, bolts, a right fixing part, supporting rods, a second sliding block component and a pre-press spring. The ends of the four supporting rods are fixedly arranged on the four corners of the left fixing part and the four corners of the right fixing part through the bolts respectively, the windward thin plate is fixed between the first sliding block component and the second sliding block component, and the flow preventing cylinders are fixedly arranged at the two ends of the windward thin plate respectively. Notches are formed in the middle of the second sliding block component and the middle of the right fixing part respectively, and the two ends of the bent beam are fixedly arranged in the notches of the second sliding block component and the right fixing part respectively. The prepress spring is installed between the first sliding block component and the left fixing part. The piezoelectric cantilever beam component is fixed to one or two sides of the middle of the bent beam. Even when the wind-induced vibration piezoelectric energy collecting device is located on an occasion with the low wind speed, the piezoelectric component can also generate large vibration, a large amount of electric energy can be outputted, and the wind energy collecting efficiency is effectively improved.
Description
Technical field
The present invention relates to piezoelectric energy assembling sphere is and in particular to a kind of wind-induced vibration piezoelectric energy collecting device.
Background technology
With scientific and technical development, many fields all apply wireless sensor network, but how to be wireless senser
Network node energy supply is a difficult problem needing to solve.There is limited energy, replacing maintenance cost height etc. using battery-powered to ask
Topic, finding wireless sensor network node energy supply new method becomes the focus of attention of researcher.
A kind of effective solution is directly to collect energy from environment for sensor energy supply, and this scheme can promote
Exploitation to clean energy resource, and the pollution for environment can be reduced.Wind energy is a kind of renewable sources of energy of cleaning, and amount of storage
Huge.Collect wind energy generating electricity in addition to using traditional large-scale wind driven generator, can also by the method for wind-induced vibration Lai
Carry out wind energy collecting.
At present, in order to effectively collect wind energy, Chinese scholars propose the solution of respective various kinds.Such as, Clair
D S et al. proposes a piezoelectricity wind-energy collecting device, and Piezoelectric Cantilever Beams are embedded in the vibration cavity of a similar mouth organ,
When the air pressure change in cavity, cause piezoelectric cantilever to vibrate back and forth, and produce electric energy.But its whole device volume is larger,
Generating efficiency is not high（A scalable concept for micropower generation using flow-induced
Self-excited oscillations, Applied Physics Letters）.Patent CN103973161A proposes one kind
Rotary piezoelectric collection device, when its rotor rotates, the contrary magnet steel of stator and rotor upper magnetic pole produces reaction force, extrudes piezo stack
Heap is thus produce electric energy.The version variation of current piezoelectricity wind-energy collecting device, is paid close attention to by numerous researchers.But still
There is the deficiencies such as energy conversion efficiency is low, device volume is big, complicated various, the startup work wind speed height of parts, and this also hinders
The development of piezoelectricity wind-energy collecting device and application.
Content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of wind-induced vibration piezoelectric energy collecting device, its
Can apply and have in the middle of the environment of wind, efficiently by wind energy transformation electric energy in environment, and be microelectronic device energy supply.
For achieving the above object, the present invention employs the following technical solutions：
A kind of wind-induced vibration piezoelectric energy collecting device, including left fixture, the first slider part, choked flow cylinder, windward thin plate,
Bent beam, piezoelectric cantilever element, bolt, right fixture, pole, the second slider part, pre-compressed spring；The two ends of four poles
It is separately fixed on left fixture and the corner of right fixture by bolt, constitute the housing of wind-induced vibration energy collecting device
Frame；Described thin plate windward is fixed between the first slider part and the second slider part, and the two ends of thin plate fix one respectively windward
Individual choked flow cylinder, constitutes a total slider part, and this total slider part can slidably reciprocate along pole；Described second slide section
The middle part of part and right fixture has a grooving, and the two ends of described bent beam are fixed on the second slider part and right fixture
Grooving in, between described first slider part and left fixture, pre-compressed spring is installed, its be total slider part provide precompressed
Power, and so that bending beam stress is bent；The middle one or both sides of described bent beam are fixed with piezoelectric cantilever element.
The principle of the present invention is as follows：
During the assembling of wind-induced vibration piezoelectric energy collecting device, pre-compressed spring compressive deformation is so that total slider part is applied to bent beam
Plus precompression, bent beam is in case of bending.By adjusting the size of precompression so that bent beam is exactly in Critical Buckling shape
State.Under Critical Buckling state, though bent beam simply small increase loaded also result in structure and produce larger sound
Should.
When total slider part be subject to wind action when, distinguished and admirable can produce vortex street effect through choked flow cylinder, cause thin plate windward
Upper and lower surface be subject to alternate wind active force, thus driving total slider part of reciprocating vibration along pole, and make to be in critical bending
Bent beam institute under curved state is loaded to produce fluctuation, finally causes bent beam to produce larger vibration response, and drives piezoelectricity unit
Part produces violent vibration, thus producing more electric energy.
Bent beam is in unstable Critical Buckling state, even if causing external forces increment very little, also can make curved
Curved beam and piezoelectric cantilever element produce larger vibratory response.
Compared with prior art, the present invention has the substantive distinguishing features projecting as follows and significant advantage：
Even if wind-induced vibration piezoelectric energy collecting device of the present invention is in the not high occasion of wind speed, piezoelectric element also can be made to produce larger
Vibration, the more electric energy of output, be effectively improved the efficiency of wind energy collecting.
Brief description
Fig. 1 is the three dimensional structure diagram of wind-induced vibration piezoelectric energy collecting device.
Fig. 2 is the schematic diagram of wind-energy collecting device wind-induced vibration.
Specific embodiment
Hereinafter the specific embodiment of the present invention is elaborated.The description below is only example, rather than in order to limit
The scope of the present invention and its application.
As shown in figure 1, a kind of wind-induced vibration piezoelectric energy collecting device, including left fixture 1, the first slider part 2, resistance
Stream cylinder 3, windward thin plate 4, bent beam 5, piezoelectric cantilever element 6, bolt 7, right fixture 8, pole 9, the second slider part
10th, pre-compressed spring 11；The two ends of four poles 9 are separately fixed on left fixture 1 and the corner of right fixture 8 by bolt 7,
Constitute the outside framework of wind-induced vibration energy collecting device；Described thin plate windward 4 is fixed on the first slider part 2 and the second slide section
Between part 10, a choked flow cylinder 3 is fixed at the two ends of thin plate 4 respectively windward, constitutes a total slider part, this total slider part
Can slidably reciprocate along pole 9；The middle part of described second slider part 10 and right fixture 8 has a grooving, described
The two ends of bent beam 5 are fixed in the second slider part 10 and the grooving of right fixture 8, and described first slider part 2 and a left side are solid
Determine, between part 1, pre-compressed spring 11 is installed, it provides precompression for total slider part, and so that bent beam 5 stress is bent；Described curved
The middle one or both sides of curved beam 5 are fixed with piezoelectric cantilever element 6.
Described piezoelectric cantilever element 6 can be piezoelectric ceramic metal piece or polyvinylidene fluoride（PVDF）.
During the assembling of wind-induced vibration piezoelectric energy collecting device, pre-compressed spring 11 compressive deformation is so that total slider part is to curved
Curved beam 5 applies precompression, and bent beam 5 is in case of bending.Now need adjust precompression size so that bent beam 5 just
It is in Critical Buckling state.Under Critical Buckling state, though bent beam 5 simply small increase loaded also result in knot
Structure produces larger response.
As shown in Fig. 2 the thin arrow of in figure show the direction of wind, block arrow show total slider part side of reciprocating vibration
To.When the total slider part assembling is subject to right side wind action, because wind is affected by choked flow cylinder 3, it flows through choked flow
Vortex street effect being produced after cylinder 3, causing the upper and lower surface of thin plate 4 to be windward subject to alternate wind active force, thus drive always sliding
Block part is of reciprocating vibration along pole 9, and direction of vibration is as shown in block arrow in Fig. 2, and makes the bending being under Critical Buckling state
Beam 5 institute is loaded to produce fluctuation, finally causes bent beam 5 to produce larger vibration response, and drives piezoelectric cantilever element 6 to produce
Violent vibration, thus produce electric energy.Accordingly even when being in the not high occasion of wind speed, piezoelectric cantilever element 6 also can be made to produce
The more electric energy of larger vibration, output, is effectively improved the efficiency of wind energy collecting.Because total slider part is symmetrical
Structure, when the wind being blown by left side, the operation principle of wind energy collecting device is identical.
Claims (1)
1. a kind of wind-induced vibration piezoelectric energy collecting device is it is characterised in that include left fixture（1）, the first slider part
（2）, choked flow cylinder（3）, thin plate windward（4）, bent beam（5）, piezoelectric cantilever element（6）, bolt（7）, right fixture（8）、
Pole（9）, the second slider part（10）, pre-compressed spring（11）；Four poles（9）Two ends pass through bolt（7）It is separately fixed at
Left fixture（1）With right fixture（8）Corner on, constitute wind-induced vibration energy collecting device outside framework；Described thin windward
Plate（4）It is fixed on the first slider part（2）With the second slider part（10）Between, thin plate windward（4）Two ends fix one respectively
Individual choked flow cylinder（3）, constitute a total slider part, this total slider part can be along pole（9）Slidably reciprocate；Described second
Slider part（10）With right fixture（8）Middle part have a grooving, described bent beam（5）To be fixed on second sliding at two ends
Block part（10）With right fixture（8）Grooving in, described first slider part（2）With left fixture（1）Between be provided with pre-
Pressing spring（11）, it provides precompression for total slider part, and makes bent beam（5）Stress bends；Described bent beam（5）Centre
One or both sides are fixed with piezoelectric cantilever element（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058600.9A CN106382191B (en) | 2016-11-28 | 2016-11-28 | A kind of wind-induced vibration piezoelectric energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058600.9A CN106382191B (en) | 2016-11-28 | 2016-11-28 | A kind of wind-induced vibration piezoelectric energy collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106382191A true CN106382191A (en) | 2017-02-08 |
| CN106382191B CN106382191B (en) | 2018-10-23 |
Family
ID=57959291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611058600.9A Active CN106382191B (en) | 2016-11-28 | 2016-11-28 | A kind of wind-induced vibration piezoelectric energy collecting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317517A (en) * | 2017-08-17 | 2017-11-03 | 浙江师范大学 | A kind of blade of wind-driven generator monitoring system self powered supply |
| CN107688100A (en) * | 2017-09-22 | 2018-02-13 | 上海交通大学 | A kind of pipeline stream flow monitoring self-powered sensor based on vortex-induced vibration |
| CN110048640A (en) * | 2019-04-17 | 2019-07-23 | 上海大学 | A kind of piezoelectric energy collector for collecting body kinetic energy |
| CN110261663A (en) * | 2019-07-02 | 2019-09-20 | 上海交通大学 | String stagger arrangement pressure energy harvester test device and test method based on wind-induced vibration |
| CN112879836A (en) * | 2021-02-11 | 2021-06-01 | 胡炜 | Outdoor LED spotlight |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226221A (en) * | 2005-02-18 | 2006-08-31 | Univ Nagoya | Power generating device |
| CN203702474U (en) * | 2013-12-27 | 2014-07-09 | 上海工程技术大学 | Damping power generation structure for automobile |
| CN104113232A (en) * | 2014-07-11 | 2014-10-22 | 西安电子科技大学 | Wind-induced vibration piezoelectric generator |
| EP2953259A1 (en) * | 2014-06-05 | 2015-12-09 | StronGER S.r.l. | Device made of piezoelectric material having a fin for harvesting energy from air flows |
-
2016
- 2016-11-28 CN CN201611058600.9A patent/CN106382191B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226221A (en) * | 2005-02-18 | 2006-08-31 | Univ Nagoya | Power generating device |
| CN203702474U (en) * | 2013-12-27 | 2014-07-09 | 上海工程技术大学 | Damping power generation structure for automobile |
| EP2953259A1 (en) * | 2014-06-05 | 2015-12-09 | StronGER S.r.l. | Device made of piezoelectric material having a fin for harvesting energy from air flows |
| CN104113232A (en) * | 2014-07-11 | 2014-10-22 | 西安电子科技大学 | Wind-induced vibration piezoelectric generator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317517A (en) * | 2017-08-17 | 2017-11-03 | 浙江师范大学 | A kind of blade of wind-driven generator monitoring system self powered supply |
| CN107317517B (en) * | 2017-08-17 | 2023-03-21 | 浙江师范大学 | Self-powered power supply for wind driven generator blade monitoring system |
| CN107688100A (en) * | 2017-09-22 | 2018-02-13 | 上海交通大学 | A kind of pipeline stream flow monitoring self-powered sensor based on vortex-induced vibration |
| CN110048640A (en) * | 2019-04-17 | 2019-07-23 | 上海大学 | A kind of piezoelectric energy collector for collecting body kinetic energy |
| CN110261663A (en) * | 2019-07-02 | 2019-09-20 | 上海交通大学 | String stagger arrangement pressure energy harvester test device and test method based on wind-induced vibration |
| CN110261663B (en) * | 2019-07-02 | 2020-07-14 | 上海交通大学 | Test device and test method for series-staggered piezoelectric energy collector based on wind-induced vibration |
| CN112879836A (en) * | 2021-02-11 | 2021-06-01 | 胡炜 | Outdoor LED spotlight |
| CN112879836B (en) * | 2021-02-11 | 2022-12-20 | 深圳市安泽通科技发展有限公司 | Outdoor LED spotlight |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106382191B (en) | 2018-10-23 |
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