CN110011567A - Energy collecting device based on coupling of gas-sound-solid multi-physical field - Google Patents
Energy collecting device based on coupling of gas-sound-solid multi-physical field Download PDFInfo
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- CN110011567A CN110011567A CN201910401824.2A CN201910401824A CN110011567A CN 110011567 A CN110011567 A CN 110011567A CN 201910401824 A CN201910401824 A CN 201910401824A CN 110011567 A CN110011567 A CN 110011567A
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- 230000008878 coupling Effects 0.000 title claims abstract description 9
- 238000010168 coupling process Methods 0.000 title claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 9
- 239000007787 solid Substances 0.000 title abstract 2
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000026683 transduction Effects 0.000 abstract 1
- 238000010361 transduction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002463 transducing effect 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
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
-
- 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
- H02N2/188—Vibration harvesters adapted for resonant operation
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention belongs to the technical field of airflow piezoelectric transduction, and relates to an energy collecting device based on air-sound-solid multi-physical-field coupling. The airflow excitation system comprises a nozzle and a resonant cavity; the nozzle is a cuboid, a variable-section wedge-shaped hole structure is arranged in the nozzle, and the area of an inlet of the nozzle is larger than that of an outlet of the nozzle. The resonant cavity is a semi-closed square cylinder, the upper end of the top of the square cylinder is in a wedge shape, and the bottom of the square cylinder is in a closed structure. At least two piezoelectric transducers are vertically fixed on the central line of the inner lower surface of the resonant cavity in a cantilever beam form to form array distribution. The energy storage control circuit is fixed at the outer side of the bottom of the resonant cavity; the piezoelectric transducer is connected with the energy storage control circuit through a lead. The piezoelectric wind energy collector is simple in structure, can be miniaturized, and is easy to integrate with the piezoelectric wind energy collector. In addition, the device has the characteristics of strong flow rate adaptability and high energy collection power density.
Description
Technical field
The invention belongs to air-flow piezoelectricity energy-conversion technique fields, Gu it is related to a kind of based on gas-sound-multiple physical field coupling energy
Collection device.
Background technique
Environmental energy collection technique continuously can convert electric energy for energy various forms of in environment, have body
The remarkable advantages such as product small, the service life is long, energy density height, have potential application prospect in terms of wireless sensing node self-powered.
Wind-force, air-flow are widely present in the work environment, such as the windstream of the flowing of natural wind, gas in pipelines, moving object.It leans on
Wind or air-flow push directly on turbo blade driving rotary type electromagnetic energy collector exist structure is complicated, processing and installation more
The problems such as difficult, it is difficult to realize microminaturization, cannot be widely implemented and apply so far.Vibrational energy is converted by airflow kinetic energy,
And vibration piezoelectric energy collection technique is combined to realize power generation, it will be a kind of new method.
Existing flow-induced vibration piezoelectric generating device is all based on caused by the power effect of air-flow and structure from exciting
It is dynamic, there are problems that energy harvester power density is low and flow velocity bad adaptability.
Summary of the invention
Gu the invention provides a kind of energy collecting device coupled based on gas-sound-multiple physical field, realizes and passed to wireless
Feel the confession electricity demanding of node.
Technical scheme is as follows:
Gu a kind of based on gas-sound-multiple physical field coupling energy collecting device, including flow-induced vibration system and transducing system
System.
The flow-induced vibration system is based on fluid dynamic sound source structure, including nozzle and resonant cavity；The nozzle is
Cuboid, internal is the wedge-shaped pore structure of variable cross-section, and nozzle entrance area is greater than discharge area, is conducive to improve jet velocity
Degree.The resonant cavity is semi-enclosed square tube, and the top upper end of square tube is wedgelike, and the bottom of square tube is closed knot
Structure.The connecting plate is L shaped plate, and the exit lower end of nozzle and one end of connecting plate connect, the other end and resonant cavity of connecting plate
Top lower end connects, at the wedge of jet expansion face resonant cavity.
The energy converting system includes PZT (piezoelectric transducer) and energy storage control circuit；At least two PZT (piezoelectric transducer)s are with cantilever beam shape
Formula is vertically fixed on the center line of resonant cavity bottom inner surface, forms array distribution.Energy storage control circuit is fixed on resonant cavity
Bottom outside；The PZT (piezoelectric transducer) is attached through conducting wire and energy storage control circuit.
The PZT (piezoelectric transducer) is made of PZT-5H piezoelectric patches and metal substrate.The energy storage control circuit is by rectified current
Road, capacitor and constant pressure chip MAX1615 composition；Input interface is connected with the conducting wire in PZT (piezoelectric transducer), and PZT-5H is pressed
The alternating voltage that electric piece generates is converted to constant DC voltage 5V/3.3V.
Its working principles are as follows:
Ambient windstream forms jet stream after nozzle sprays, when passing through in (resonant cavity front end) static air in cavity,
Contact on boundary because of high velocity stream with quiescent atmosphere, constantly generation vortex push forward and continue to develop broadening.Jet impulse point
It is separated after splitting, forms Vortex Shedding and generate edge tones (sound source of the dipole).Sound wave is propagated in resonant cavity, and in bottom
(rigid bottom) reflects, and exists simultaneously positive and negative to sound wave, and the air for triggering inside cavity enters resonant state, and formation is stayed
Wave resonance.It generates and stablizes sound source and amplified, frequency is captured, and is determined by structure of resonant cavity size.At this point, jet stream exists
Wedge nearby periodically vibrates, to maintain the standing wave resonance in edge tones and resonant cavity.
Under the influence of standing wave resonance, resonance chamber air will make periodically expansion and compression movement, drive beam type
PZT (piezoelectric transducer) swings, and forms vibration, to generate strain, causes charge to be assembled in piezoelectric patches upper and lower surface, and pressing
The thickness direction of electric material forms voltage, through energy storage control circuit, realizes energy stores and power supply.According to resonance principle, work as pressure
When the intrinsic frequency of electric transducer is identical as excitation force frequency, system is in resonance state, and the amplitude of PZT (piezoelectric transducer) vibration reaches
Electricity to maximum value, piezoelectric material excitation will be more, so that the output electric energy of PZT (piezoelectric transducer) is maximum.
Beneficial effects of the present invention:
The configuration of the present invention is simple, can microminaturization, be easy to integrated with piezoelectricity wind energy collector.In addition, the device has stream
The fast adaptable and high feature of collection of energy power density.
Detailed description of the invention
Gu Fig. 1 is based on gas-sound-multiple physical field coupling piezoelectric energy collection scheme schematic diagram.
The sectional arrangement drawing of Fig. 2 mechanical structure portion.
Fig. 3 is nozzle cross-sectional view.
Fig. 4 is nozzle-connecting plate-resonant cavity location diagram.
Fig. 5 is resonant cavity cross-sectional view.
Fig. 6 resonant cavity-PZT (piezoelectric transducer) location diagram.
Fig. 7 is connecting plate schematic diagram.
Fig. 8 is PZT (piezoelectric transducer) schematic diagram.
Fig. 9 is energy storage control circuit.
In figure: 1 nozzle；2 resonant cavities；3 conducting wires；4 PZT (piezoelectric transducer)s；5 energy storage control circuits；6 cover boards；7 metal substrates；8
Connecting plate.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
Fig. 2 show the sectional arrangement drawing of mechanical structure portion, and the mechanical part of the device is by nozzle 1, resonant cavity 2, company
Fishplate bar 8 and PZT (piezoelectric transducer) 4 are formed.Nozzle 1 faces resonant cavity 2, and is attached by connecting plate 8 and fixes them
Relative position；In addition, PZT (piezoelectric transducer) 4 is vertically arranged on the center line of 2 bottom of resonant cavity, and form a line.
Fig. 3 show the cross-sectional view of 1 structure of nozzle, and structure is the wedged hole of variable cross-section.1 inlet area of nozzle is larger,
Discharge area is smaller, is conducive to improve effluxvelocity in this way.Nozzle 1 exports at the wedge for facing resonant cavity 2, and passes through connection
Plate 8 determines its position, as shown in Figure 4.
Fig. 5 show the cross-sectional view of 2 structure of resonant cavity, is semi-enclosed structure.Open end upper surface is in wedgelike, and with
Nozzle 1 faces.The lower end of open end is connect by connecting plate with nozzle 1, determines their positional relationship, as shown in Figure 4.Altogether
2 plane perpendicular of chamber that shakes installs PZT (piezoelectric transducer) 4, and forms a column, as shown in Figure 6.
Fig. 7 show 8 structure of connecting plate, and the upper surface of connecting plate 8 is connected with nozzle 1, and right side is connected with resonant cavity 2
It connects, so that it is determined that the relative position of nozzle 1 and resonant cavity 2, as shown in Figure 4.
Fig. 8 show 4 structure of PZT (piezoelectric transducer), is made of PZT-5H piezoelectric patches and metal substrate 7.PZT (piezoelectric transducer) 4
It is vertically mounted on the inner chamber bottom surface of resonant cavity 2, and forms a column, as shown in Figure 6.In addition, PZT (piezoelectric transducer) 4 is through conducting wire 3 and storage
It can control circuit 5 to be attached.
Fig. 9 show energy storage control circuit.It is made of rectification circuit, capacitor and constant pressure chip MAX1615.Input connects
Mouth is connected with the conducting wire 3 in PZT (piezoelectric transducer) 4, the alternating voltage that piezoelectric patches generates can be converted to constant DC voltage 5V/
3.3V。
Claims (3)
1. Gu a kind of based on gas-sound-multiple physical field coupling energy collecting device, which is characterized in that including flow-induced vibration system
And energy converting system；
The flow-induced vibration system is based on fluid dynamic sound source structure, including nozzle (1) and resonant cavity (2)；The nozzle
It (1) is cuboid, internal is the wedge-shaped pore structure of variable cross-section, and nozzle entrance area is greater than discharge area, is conducive to improve and penetrate
Flow velocity degree；The resonant cavity (2) is semi-enclosed square tube, and the top upper end of square tube is wedgelike, the bottom of square tube
For closed structure；Connecting plate (8) is L shaped plate, and the exit lower end of nozzle (1) is connect with one end of connecting plate (8), connecting plate (8)
The other end and resonant cavity (2) at the top of lower end connect, at the wedge of nozzle (1) outlet face resonant cavity (2)；
The energy converting system includes PZT (piezoelectric transducer) (4) and energy storage control circuit (5)；At least two PZT (piezoelectric transducer)s (4) are with outstanding
Arm beam form is vertically fixed on the center line of resonant cavity (2) bottom inner surface, forms array distribution；Energy storage control circuit (5)
It is fixed on resonant cavity (2) bottom outside；The PZT (piezoelectric transducer) (4) is attached through conducting wire (3) and energy storage control circuit (5).
2. Gu as described in claim 1 based on gas-sound-multiple physical field coupling energy collecting device, which is characterized in that described
PZT (piezoelectric transducer) (4) is made of PZT-5H piezoelectric patches and metal substrate (7).
3. Gu as claimed in claim 1 or 2 based on gas-sound-multiple physical field coupling energy collecting device, which is characterized in that
The energy storage control circuit is made of rectification circuit, capacitor and constant pressure chip MAX1615；Input interface and PZT (piezoelectric transducer)
(4) conducting wire (3) in is connected, and the alternating voltage that PZT-5H piezoelectric patches generates is converted to constant DC voltage 5V/3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910401824.2A CN110011567B (en) | 2019-05-15 | 2019-05-15 | Energy collection device based on gas-sound-solid multiple physical field coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910401824.2A CN110011567B (en) | 2019-05-15 | 2019-05-15 | Energy collection device based on gas-sound-solid multiple physical field coupling |
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| Publication Number | Publication Date |
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| CN110011567A true CN110011567A (en) | 2019-07-12 |
| CN110011567B CN110011567B (en) | 2024-07-16 |
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| CN201910401824.2A Active CN110011567B (en) | 2019-05-15 | 2019-05-15 | Energy collection device based on gas-sound-solid multiple physical field coupling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985322A (en) * | 2020-01-02 | 2020-04-10 | 广州大学 | Wake flow galloping power generation device |
| CN111884540A (en) * | 2020-07-31 | 2020-11-03 | 林一平 | PVDF piezoelectric film-based noise reduction device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405068Y (en) * | 2000-01-31 | 2000-11-08 | 王法源 | Comprehensive device for vibration damping and noise reducing in sound field |
| US6152158A (en) * | 1999-03-26 | 2000-11-28 | Hu; Zhimin | Gaseous wave pressure regulator and its energy recovery system |
| US20130221141A1 (en) * | 2010-09-29 | 2013-08-29 | Xiaoding Zhang | Fluid shockwave reactor |
| CN105391345A (en) * | 2015-12-30 | 2016-03-09 | 南京理工大学 | Fluid power sound source excitation method of piezoelectric generator |
| CN108322092A (en) * | 2018-03-12 | 2018-07-24 | 常州机电职业技术学院 | Enhanced airflow sound-induced vibration excitation device and enhanced airflow sound-induced vibration excitation method |
| CN207819795U (en) * | 2018-01-31 | 2018-09-04 | 南京邮电大学 | A kind of all-bottom sound energy recycle device |
| CN108644810A (en) * | 2018-06-07 | 2018-10-12 | 南京航空航天大学 | A kind of double pre- membrane type ultrasonic nozzles |
| CN210167982U (en) * | 2019-05-15 | 2020-03-20 | 常州机电职业技术学院 | Energy collecting device based on coupling of gas-sound-solid multi-physical field |
-
2019
- 2019-05-15 CN CN201910401824.2A patent/CN110011567B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6152158A (en) * | 1999-03-26 | 2000-11-28 | Hu; Zhimin | Gaseous wave pressure regulator and its energy recovery system |
| CN2405068Y (en) * | 2000-01-31 | 2000-11-08 | 王法源 | Comprehensive device for vibration damping and noise reducing in sound field |
| US20130221141A1 (en) * | 2010-09-29 | 2013-08-29 | Xiaoding Zhang | Fluid shockwave reactor |
| CN105391345A (en) * | 2015-12-30 | 2016-03-09 | 南京理工大学 | Fluid power sound source excitation method of piezoelectric generator |
| CN207819795U (en) * | 2018-01-31 | 2018-09-04 | 南京邮电大学 | A kind of all-bottom sound energy recycle device |
| CN108322092A (en) * | 2018-03-12 | 2018-07-24 | 常州机电职业技术学院 | Enhanced airflow sound-induced vibration excitation device and enhanced airflow sound-induced vibration excitation method |
| CN108644810A (en) * | 2018-06-07 | 2018-10-12 | 南京航空航天大学 | A kind of double pre- membrane type ultrasonic nozzles |
| CN210167982U (en) * | 2019-05-15 | 2020-03-20 | 常州机电职业技术学院 | Energy collecting device based on coupling of gas-sound-solid multi-physical field |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985322A (en) * | 2020-01-02 | 2020-04-10 | 广州大学 | Wake flow galloping power generation device |
| CN111884540A (en) * | 2020-07-31 | 2020-11-03 | 林一平 | PVDF piezoelectric film-based noise reduction device |
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| CN110011567B (en) | 2024-07-16 |
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