CN102794145A - Acoustic cavitation device - Google Patents
Acoustic cavitation device Download PDFInfo
- Publication number
- CN102794145A CN102794145A CN2012102446094A CN201210244609A CN102794145A CN 102794145 A CN102794145 A CN 102794145A CN 2012102446094 A CN2012102446094 A CN 2012102446094A CN 201210244609 A CN201210244609 A CN 201210244609A CN 102794145 A CN102794145 A CN 102794145A
- Authority
- CN
- China
- Prior art keywords
- sound source
- cavitation
- sound
- pzt
- piezoelectric transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Abstract
The embodiment of the invention provides an acoustic cavitation device. The device comprises a container used for holding liquid; two piezoelectric transducer sound sources oppositely arranged on one straight line in the axial direction; and a sound source generator used for adjusting the frequency, position and one or a plurality of parameters in the phase of the sound source. The embodiment of the invention generates strong cavitation in the extensive region away from the surface of the sound source and generates no cavitation in the region of the surface of the sound source so as to realize the control on the acoustic cavitation spatial distribution. The invention solves the problem that the current acoustic cavitation is mainly generated on the surface of the sound source and cannot be generated in mass scale liquid.
Description
Technical field
The present invention relates to the acoustic cavitation field, particularly a kind of acoustic cavitation device.
Background technology
Chemists find under study for action, when the solution that produces chemical reaction is applied sound field, can measure the increase of the speed of chemical reaction, the increasing of chemical product output, and the reduction of chemical reaction condition, even can obtain new chemical product.Just because of ultrasonic processing at liquid, in a very big field, under lab show out of the ordinary, to such an extent as to a prosperous subject branch independently is called phonochemistry.Phonochemistry and sonication occupy an important position in ultrasonics, up to now, have been applied to considerable field, and for example food, nano material are synthetic, pharmacy, chemistry etc.
But the thousands of scientific achievement that phonochemistry or sonication obtain in the laboratory seldom is converted into productivity, and the sonication in the liquid does not receive due attention in real life.Ying Chongfu carried out practicability work and points out to cause the reason of this phenomenon in part because do not produce acoustic cavitation on a large scale in 2005.
Fig. 1 is diameter 120mm, the asynchronous taper cavitation bubble of frequency 20.7kHz horn input sound intensity sketch map.(a) sound intensity 1.8W/cm wherein
2, (b) sound intensity 3.5W/cm
2, (c) sound intensity 5.3W/cm
2, (d) sound intensity 8.2W/cm
2The ultrasonic amplitude transformer power sound intensity is added to 8W/cm
2After, form the cavitation bubble of taper on the water-immersed top of horn, after this, along with the increase of the horn sound intensity, bubble mainly be formed on the horn top near, form so-called " cavitation shielding " at last.At this moment the acoustic energy that increases can not be imported effectively in the liquid and in the wide of liquid and produce cavitation.
Therefore, merely add high-powerly, " amplification " existing acoustic processing device and acoustical power thereof may not necessarily obtain desired result simply.In addition, the input of very big acoustical power and very powerful electroacoustic transduction equipment cost are high, maintenance is difficult, it is energy-conservation to be unfavorable for.
Summary of the invention
In order to address the above problem, the embodiment of the invention proposes the acoustic cavitation device.Said device comprises: a container is used for holding liquid; Two PZT (piezoelectric transducer) sound sources of axially point-blank placing relatively; A sound source generator is used for adjusting frequency, the position of sound source, one or more parameters of phase place.Described sound source generator links to each other with said PZT (piezoelectric transducer) sound source.
The embodiment of the invention produces strong cavitation in away from the vast zone on sound source surface, in the zone on sound source surface, do not produce strong cavitation, realizes the control for the acoustic cavitation spatial distribution.Solved existing acoustic cavitation and mainly be created in the sound source surface, the problem that can not in mass liquid, produce.
Description of drawings
Fig. 1 is diameter 120mm of the prior art, the asynchronous taper cavitation bubble of frequency 20.7kHz horn input sound intensity sketch map;
Fig. 2 is the acoustic cavitation device sketch map of the embodiment of the invention;
Fig. 3 makes minimum pressure values that the time spent hydrophone measures for the single, double source of the embodiment of the invention and apart from the relation curve contrast sketch map of d;
Fig. 4 does the time spent for single double source of the embodiment of the invention, iodine method for releasing and hydrophone method measurement result contrast sketch map;
Fig. 5 is that diameter 5cm aluminium foil five percent weight loss and position under the sound field effect of single, double source concern sketch map.
The specific embodiment
In breadboard test, in small-scale test, people obtain apparent in view sonication effect with the acoustic cavitation enough amounts, that be fit to kind that sound wave can produce in liquid.But when testing on a large scale, used sound source mode when people often continue to use on a small scale strengthens acoustical power merely, strengthens fluid flow, the final discovery: the way of this simple amplification acoustical power, can not play the cavitation effect of proportional amplification.
Receive in this thinking under the prerequisite of existing acoustic technique restriction, this programme is considered another approach, promptly starts with from the mechanism of sonication and solves this problem.Sonication in the liquid, in the ordinary course of things, sound is not the main direct mechanism of action, be indirect means, and acoustic cavitation is only the mechanism of sonication.So should with might " ingeniously " guarantee the direct mechanism of action with sound field characteristic and other means---the efficient performance of acoustic cavitation, rather than only amplify acoustical power, the i.e. optimal control of acoustic cavitation spatial distribution simply.
Below in conjunction with accompanying drawing and specific embodiment the present invention is carried out detailed explanation.
Fig. 2 is a kind of acoustic cavitation device sketch map of the embodiment of the invention.As shown in Figure 2, said acoustic cavitation device comprises: a container is used for holding liquid; Two PZT (piezoelectric transducer) sound source T1, T2 that axially point-blank place relatively; A sound source generator is used for adjusting one or more parameters of frequency, position and the phase place of sound source.Described sound source generator links to each other with said PZT (piezoelectric transducer) sound source.Wherein, fundamental frequency mainly is to confirm during through the sound source initial design, and the adjustment of the frequency on the fundamental frequency basis is to realize through the swept signal source in the sound source.The adjustment of sound source position realizes through coordinatograph or guide rail.The adjustment of phase place is to realize through the design of the signal delay in the sound source circuit.
Be noted that to carrying out acoustic cavitation smoothly the amount of said liquid should at least can be with said sound source T1, the whole submergences of T2.
Preferably, a said container is used for holding liquid, specifically comprises: a container is used to fill with liquid.
Preferably, said container is a rectangular vessel.Certainly, said container also can be other shapes of containers, such as hydrostatic column, conical vessel etc., does not do qualification at this.
Preferably, said PZT (piezoelectric transducer) sound source is a cylindrical piezoelectric transducing device sound source.Certainly, the shape of said PZT (piezoelectric transducer) sound source also can be other shape, such as taper, cube shaped, cuboid etc., does not do qualification at this.
Fig. 3 makes minimum pressure values that the time spent hydrophone measures for the single, double source of the embodiment of the invention and apart from the relation curve contrast sketch map of d.As shown in Figure 3, move the measurement of carrying out sound field from T1 to the T2 direction along the axial direction of T1, T2 with hydrophone, the distance of hydrophone centre-to-centre spacing T1 is d, d is more than or equal to 1cm, smaller or equal to 7cm.The spacing that moves is 1cm.The gross electric capacity of power supply input is identical when working together with T1, T2 when T1 works independently.The acoustic pressure minimum of a value (peak suction) of getting the hydrophone measurement is as the experimental data of measuring.
During single transducer work, along with the increase of hydrophone to transducer T1 distance, the sound pressure signal min amplitude (absolute value) that records reduces, and this point is more obvious when input electric power is big.Near idle T2 the time, the acoustic pressure amplitude that records slightly increases, and this maybe be owing to the T2 reflection causes.
During two transducer work; Hydrophone is lower in the sound pressure signal min amplitude (absolute value) that the near surface of transducer T1 and T2 records; Sound pressure signal amplitude in that the zone line of transducer T1 and T2 records is higher, and this point also is that the gross electric capacity in the sound source input is more obvious when big.From Fig. 3, can find out when two transducers are worked simultaneously, more even when acoustic pressure distribution is spatially worked than single transducer.The measurement data of Fig. 3 is the mean value of calculating after twice of the hydrophone duplicate measurements.
Fig. 4 does the time spent for single double source of the embodiment of the invention, iodine method for releasing and hydrophone method measurement result contrast sketch map.As can beappreciated from fig. 4; When the measurement result of iodine method for releasing and hydrophone method have uniformity, single transducer work on trend; Near the burst size of iodine many (cavitation is strong) this transducer is along with the burst size of the increase iodine that leaves the transducer distance reduces (cavitation weakens rapidly) rapidly; And when two transducers are worked simultaneously, the burst size of iodine few (cavitation weak) in the vicinity of two transducers, in the zone of the centre of two transducers, (cavitation is strong) obviously strengthened in the release two of iodine.See from this point, realized the experiment expection of this programme.
Fig. 5 is that diameter 5cm aluminium foil five percent weight loss and position under the sound field effect of single, double source concern sketch map; Also be that Fig. 5 has showed five result of experiment of diameter 5cm aluminium foil.As can be seen from Figure 5, do the time spent at simple sund source, aluminium foil near work sound source near the time aluminium foil the weight that loses big, along with aluminium foil away from sound source, percent weight loss reduces rapidly; Do the time spent simultaneously in double sound source, the percent weight loss of aluminium foil is lower than the percent weight loss of two sound source zone lines near two sound sources.This has also realized " optimization of cavitation spatial distribution ".
The embodiment of the invention produces strong cavitation in away from the vast zone on sound source surface, in the zone on sound source surface, do not produce strong cavitation, has realized the control for the acoustic cavitation spatial distribution.Solved existing acoustic cavitation and mainly be created in the sound source surface, the problem that can not in mass liquid, produce.
The above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely the specific embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. an acoustic cavitation device is characterized in that, said device comprises:
A container is used for holding liquid;
Two PZT (piezoelectric transducer) sound sources of axially point-blank placing relatively;
A sound source generator is used for adjusting one or more parameters of frequency, position and the phase place of sound source;
Described sound source generator links to each other with said PZT (piezoelectric transducer) sound source.
2. device as claimed in claim 1 is characterized in that, a said container is used for holding liquid, specifically comprises: a container is used to fill with liquid.
3. according to claim 1 or claim 2 device is characterized in that said container is rectangular vessel, hydrostatic column or conical vessel.
4. like the described device of one of claim 1-3, it is characterized in that said PZT (piezoelectric transducer) sound source is cylindrical piezoelectric transducing device sound source, taper PZT (piezoelectric transducer) sound source, cube shaped PZT (piezoelectric transducer) sound source or cuboid PZT (piezoelectric transducer) sound source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102446094A CN102794145A (en) | 2012-07-13 | 2012-07-13 | Acoustic cavitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102446094A CN102794145A (en) | 2012-07-13 | 2012-07-13 | Acoustic cavitation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102794145A true CN102794145A (en) | 2012-11-28 |
Family
ID=47193597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102446094A Pending CN102794145A (en) | 2012-07-13 | 2012-07-13 | Acoustic cavitation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102794145A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831271A (en) * | 2014-03-19 | 2014-06-04 | 中国科学院声学研究所 | Ultrasonic cavitation cloud control device and ultrasonic cavitation cloud control method |
| CN104751835A (en) * | 2015-03-31 | 2015-07-01 | 中国飞机强度研究所 | Rotary sound source generating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201264929Y (en) * | 2008-06-27 | 2009-07-01 | 合肥工业大学 | Dot matrix type ultrasonic field strengthened inorganic diaphragm separator |
| CN101811751A (en) * | 2010-04-15 | 2010-08-25 | 南京航空航天大学 | Traveling wave type ultrasound reaction vessel |
| CN201842670U (en) * | 2010-10-18 | 2011-05-25 | 四平市铁东区庆升热工设备有限公司 | Flow type ultrasonic cavitation and degradation high-concentration printing sewage reactor |
-
2012
- 2012-07-13 CN CN2012102446094A patent/CN102794145A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201264929Y (en) * | 2008-06-27 | 2009-07-01 | 合肥工业大学 | Dot matrix type ultrasonic field strengthened inorganic diaphragm separator |
| CN101811751A (en) * | 2010-04-15 | 2010-08-25 | 南京航空航天大学 | Traveling wave type ultrasound reaction vessel |
| CN201842670U (en) * | 2010-10-18 | 2011-05-25 | 四平市铁东区庆升热工设备有限公司 | Flow type ultrasonic cavitation and degradation high-concentration printing sewage reactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831271A (en) * | 2014-03-19 | 2014-06-04 | 中国科学院声学研究所 | Ultrasonic cavitation cloud control device and ultrasonic cavitation cloud control method |
| CN104751835A (en) * | 2015-03-31 | 2015-07-01 | 中国飞机强度研究所 | Rotary sound source generating device |
| CN104751835B (en) * | 2015-03-31 | 2018-11-13 | 中国飞机强度研究所 | A kind of rotation sound source generating means |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yao et al. | Power ultrasound and its applications: A state-of-the-art review | |
| Mohsin et al. | Oil–water de-emulsification using ultrasonic technology | |
| Gallego-Juárez et al. | Power ultrasonic transducers with extensive radiators for industrial processing | |
| CN101811751B (en) | Traveling wave type ultrasound reaction vessel | |
| Blake et al. | Bubble Dynamics and Interface Phenomena: Proceedings of an IUTAM Symposium held in Birmingham, UK, 6–9 September 1993 | |
| Silva et al. | Designing single-beam multitrapping acoustical tweezers | |
| CN109261472A (en) | A kind of generation device and method of space-focusing vortex sound field | |
| Lu et al. | A new topological structure for the Langevin-type ultrasonic transducer | |
| JP2017071860A (en) | Method and system, which locally control residual stress of metallic component | |
| RU2014122485A (en) | SONOTROD AND DEVICE FOR REDUCING AND ELIMINATING FOAM FORMATION IN LIQUID PRODUCTS | |
| Wang et al. | Realization of cavitation fields based on the acoustic resonance modes in an immersion-type sonochemical reactor | |
| Tiong et al. | A computational and experimental study on acoustic pressure for ultrasonically formed oil-in-water emulsion | |
| Nomura et al. | Streaming induced by ultrasonic vibration in a water vessel | |
| CN102794145A (en) | Acoustic cavitation device | |
| Zhang et al. | Influence of sound directions on acoustic field characteristics within a rectangle-shaped sonoreactor: Numerical simulation and experimental study | |
| Bai et al. | Effect of different standoff distance and driving current on transducer during ultrasonic cavitation peening | |
| Li et al. | Alternative designs of acoustic lenses based on nonlinear solitary waves | |
| Mustonen et al. | FEM-based time-reversal enhanced ultrasonic cleaning | |
| CN104645916B (en) | A kind of near sound field ultrasound reactor | |
| Feng et al. | Acoustic field switching of piezoelectric device for microsphere diameter sorting | |
| Stolarski et al. | Use of near-field acoustic levitation in experimental sliding contact | |
| He ZhenBin et al. | Effects of ultrasound on wood vacuum drying characteristics. | |
| CN107899526A (en) | A kind of sonochemical process device for weakening standing wave effect based on reflecting plate topological structure | |
| Poesio et al. | Influence of high-frequency acoustic waves on the flow of a liquid through porous material: experimental and theoretical investigation | |
| Son et al. | Analysis of the ultrasonic cavitation energy in a pilot-scale sonoreactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121128 |