CN103831271A - Ultrasonic cavitation cloud control device and ultrasonic cavitation cloud control method - Google Patents
Ultrasonic cavitation cloud control device and ultrasonic cavitation cloud control method Download PDFInfo
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- CN103831271A CN103831271A CN201410103330.3A CN201410103330A CN103831271A CN 103831271 A CN103831271 A CN 103831271A CN 201410103330 A CN201410103330 A CN 201410103330A CN 103831271 A CN103831271 A CN 103831271A
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- cavitation cloud
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
Abstract
The invention relates to an ultrasonic cavitation cloud control device and an ultrasonic cavitation cloud control method. The ultrasonic cavitation cloud control device comprises an energy converter, a diverter, a regulating valve, a branch pipe and a nozzle. The energy converter is used for converting electric energy into ultrasonic waves, and a sound field is formed through the ultrasonic waves via the radiant surface of the energy converter. The diverter is used for diverting the received water flow comprising gas nuclei. The regulating valve is communicated with the diverter and used for adjusting the flow rate of the water flow diverted by the diverter. The branch pipe is communicated with the regulating valve and used for conveying the water flow. The nozzle is communicated with the branch pipe and used for spraying the water flow to the radiant surface. Cavitation bubbles are formed by the gas nuclei in the water flow under the action of the sound field, and cavitation cloud is formed through cavitation bubble gathering. The nozzle is used for controlling the shape of the calvitation cloud by adjusting the flow rate and direction of the water flow sprayed to the radiant surface. The ultrasonic cavitation cloud control device and the ultrasonic cavitation cloud control method can precisely control the ultrasonic cavitation cloud easily and conveniently.
Description
Technical field
The present invention relates to acoustic cavitation technical field, be specifically related to a kind of ultrasonic cavitation cloud control device and method.
Background technology
Hyperacoustic cavitation effect refers in the time that ultrasonic wave is propagated in fluid, under periodic acoustic pressure effect, occurs that a large amount of small cavitys are along with acoustic pressure constantly periodically expand and the crumble and fall phenomenon of motion in fluid.The process time that cavity expands-crumbles and fall extremely short (in several nanoseconds between microsecond), can produce TRANSIENT HIGH TEMPERATURE, high pressure cavity is inner when cavity is crumbled and fall, and make the medium cracking at bubble core liquid interface.This characteristic of ultrasonic cavitation provides unique environment for some chemical reactions, the chemical reaction that makes some be difficult at normal temperatures and pressures occur is occurred, and this sonochemical effect of ultrasonic cavitation has many potential application in the energy, chemical industry, medicine and other fields.
As everyone knows, cavitation effect is to have an effect by the HTHP producing of crumbling and fall of cavity one by one, but these cavitys are inhomogeneous in the distribution in space, they can form certain cavitation structure, these structures and sound field are closely related, but the mode being difficult to by changing sound field control effectively to cavitation cloud.
Along with going deep into of the research to cavitation and application, all there is at ultrasonic cleaning harmony chemical field the demand that cavitation cloud is control effectively.The benefit of controlling cavitation cloud is a lot, such as avoiding transducer radiating surface generation cavitation corrosion.The chip producing due to transducer radiating surface cavitation corrosion may pollute processed liquid, has limited thus acoustochemical large-scale industrial application.In addition, control cavitation cloud can be realized the location of cavitation cloud and clean, the place that concentration of energy is being needed most.Just need a kind of shape and the position that can realize cavitation cloud to carry out the apparatus and method of accurately controlling for this reason.
Summary of the invention
The object of this invention is to provide a kind of ultrasonic cavitation cloud control device and method, the shape to cavitation cloud and position are accurately controlled simply and easily.
For achieving the above object, the invention provides a kind of ultrasonic cavitation cloud control device, comprising:
Transducer, for converting electric energy to ultrasonic wave, described ultrasonic wave forms sound field by the radiating surface of described transducer;
Current divider, for the current that receive are shunted, has gas core in described current;
Control valve, is conducted with described current divider, the flow rate of water flow of described control valve for regulating described current divider to distribute;
Arm, is conducted with described control valve, and described arm is for delivery of described current;
Nozzle, is conducted with described arm, and for spraying described current to described radiating surface, described gas core forms cavity under the effect of described sound field in described current, and described cavity is assembled formation cavitation cloud;
Thereby the flow velocity of the described current that described nozzle sprays to described radiating surface by adjusting and direction are controlled the shape of described cavitation cloud.Preferably, described nozzle is multiple, thereby the flow velocity of the described current that multiple described nozzle sprays to described radiating surface by adjusting and direction are controlled the shape of described cavitation cloud.
Preferably, the quantity of described nozzle is multiple.
Preferably, the surface of described radiating surface is smooth surface.
Preferably, described device also comprises water pump, is conducted, for current being conveyed into described current divider with described current divider.
Preferably, described device also comprises support, and described nozzle support is on described support.
Preferably, the operating frequency of described transducer is 10kHz-100kHz.
Preferably, the average radiation sound intensity of described transducer is 2-6W/cm2.
The present invention also provides a kind of ultrasonic cavitation cloud control method, said method comprising the steps of:
Control valve shunted current flow to by current divider;
Described control valve carries out flowing to arm after velocity of flow adjust to described current;
Described current are flowed to nozzle by described arm;
Described nozzle sprays described current to the radiating surface of transducer;
Thereby control to flow velocity and the direction of the described current of described radiating surface injection the shape that described cavitation cloud forms by regulating described nozzle.
Preferably, described cavitation cloud forms specifically and comprises:
Described transducer converts electric energy to ultrasonic wave;
Described ultrasonic wave forms sound field by the radiating surface of described transducer;
Gas core in described current forms cavity under described sound field reflecting, and described cavity is assembled formation cavitation cloud.
The present invention has realized the accurate control to ultrasonic cavitation cloud.In near sound field transducer radiating surface, arrange multiple nozzles, the current that nozzle ejection goes out form cavitation cloud at the radiating surface front end of transducer.Thereby by regulating position, direction and the flow rate of water flow of nozzle to reach the object of accurate control cavitation cloud shape and position, meet demand cavitation cloud being control effectively at ultrasonic cleaning harmony chemical field.
Accompanying drawing explanation
The schematic diagram of a kind of ultrasonic cavitation cloud control device that Fig. 1 provides for the embodiment of the present invention;
The transducer of a kind of ultrasonic cavitation cloud control device that Fig. 2 provides for the embodiment of the present invention and the side view of support;
Nozzle location direction schematic diagram when cavitation cloud letter I that a kind of ultrasonic cavitation cloud of application control device that Fig. 3 provides for the embodiment of the present invention forms;
The cavitation cloud letter schematic diagram that a kind of ultrasonic cavitation cloud of application control device that Fig. 4 provides for the embodiment of the present invention forms;
The flow chart of a kind of ultrasonic cavitation cloud control method that Fig. 5 provides for the embodiment of the present invention.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below by drawings and Examples, technical scheme of the present invention is described in further detail.
It is that industrial circle is difficult to one of cavitation application the bottleneck of breaking through that position to cavitation cloud in ultrasonic field and form control effectively always.We find that in experiment jet flow cavitation structure (Jet-induced bubble structures, JBS) cavitation cloud has good controllability.On the basis supersonic frequency, power, radiation areas, jet direction, flow velocity, nozzle diameter, water quality are studied, we have progressively set up a kind of apparatus and method of controlling cavitation cloud as described in the present invention, and can utilize this apparatus and method to form cavitation cloud letter, show that this apparatus and method distribute and have good control void space in other words cavitation cloud.
JBS structure be a kind of in strong sound field, occur grow core cavitation cloud structure, cavitation structure must have stable gas core source, otherwise cavitation structure cannot sustainable existence.Its gas core source is at transducer near zone injection current, flood the gas core that current carry and form cavity under ultrasonication, in the time of sound field compressional wave except minority air pocket, most of cavity is all crumbled and fall, these cavitys of crumbling and fall are grown up resilience in the time of sound field diastolic wave, and again crumble and fall in the time of next compressional wave, so go round and begin again.Certainly except the impact of jet, the direction of JBS is also subject to the impact of sound field power and acoustic streaming.The control of JBS can be controlled by the mode of controlling current, and controllability is relatively good, can form cavitation cloud letter.
The schematic diagram of a kind of ultrasonic cavitation cloud control device that Fig. 1 provides for the embodiment of the present invention.The transducer of a kind of ultrasonic cavitation cloud control device that Fig. 2 provides for the embodiment of the present invention and the side view of support.
As shown in the figure, a kind of ultrasonic cavitation cloud control device comprises: transducer 1, nozzle 5.
Transducer 1 converts electric energy to ultrasonic wave, and transducer 1 comprises radiating surface 2, and ultrasonic wave radiate by radiating surface 2, and near radiating surface 2 so form sound field, the surperficial light requirement of radiating surface 2 is sliding, there is no obvious flaw, should not adhere to the cavitation cloud of other types when work on radiating surface 2.Radiating surface 2 is surfaces that transducer 1 contacts with water, and it is actually the front shroud of transducer, and ultrasonic vibration is passed to current by it.Near radiating surface 2, arrange multiple nozzles 5, nozzle 5 is arranged on support 3 by fixing button 4, and the position of nozzle 5, direction and number can be adjusted.
Water pump 9 and current divider 8 are conducted, and current divider 8 is conducted with one end of control valve 7, and control valve 7 other ends and arm 6 are conducted, and arm 6 is conducted with nozzle 5.In the time that ultrasonic cavitation cloud control device is worked, water is conveyed into water pump 9, current are conveyed into current divider 8 by water pump 9, current divider 8 is shunted the current that receive, further be divided into multipath stream current, multipath stream current enters multiple nozzles 5 by control valve 7 and arm 6 separately again, control valve 7 can control to adjust the flow rate of water flow of the nozzle 5 of flowing through, then nozzle 5 is near sound field injection water radiating surface, carry gas core because of in the current that eject, under the sound field reflecting that gas core forms at ultrasonic wave, form cavity, a large amount of cavitys are constantly assembled, finally form cavitation cloud 11 at the front end of transducer radiating surface.
Concrete, the gas core carrying in current is not deliberately to add, even because very clean fluid, inside is also contained stingy core or solid impurity unavoidably, and there is small crack on solid impurity surface, keeps gas core in crack.In addition the effect of entrainmenting of jet also may be injected the gas core in other regions of fluid in the strong sound field of transducer front end with jet.Therefore generally without deliberately adding gas core can realize easily jet flow cavitation cloud.Can certainly add according to actual needs the gas core of suitable diameter to strengthen cavitation effect.
Nozzle location direction schematic diagram when cavitation cloud letter I that a kind of ultrasonic cavitation cloud of application control device that Fig. 3 provides for the embodiment of the present invention forms; The cavitation cloud letter schematic diagram that a kind of ultrasonic cavitation cloud of application control device that Fig. 4 provides for the embodiment of the present invention forms.
As shown in Figure 3, in the present embodiment, near radiating surface 2, arrange 3, nozzle, wherein two nozzle horizontal positioned keeping parallelism, jet hole is towards the right side, another nozzle is vertically placed, jet hole towards under.In the time that ultrasonic cavitation cloud control device is worked, water is conveyed into water pump 9, current are conveyed into current divider 8 by water pump 9, current divider 8 is shunted the current that receive, further be divided into 3 road current, 3 road current enter respectively 3 nozzles 5 by control valve 7 and arm 6 separately again, flow rate of water flow nozzle 5 being ejected by control valve 7 is adjusted into 3m/s, then nozzle 5 is to radiating surface 2 injection waters, under the sound field reflecting that current form at ultrasonic wave, form cavitation cloud letter I at the front end of radiating surface 2.In addition, as shown in Figure 4, also can form cavitation cloud letter O and A by adjusting position, direction and the flow rate of water flow of multiple nozzles 5.
Concrete, in the current that eject because of nozzle 5, carry gas core, submerged jets form gas core source, and gas core source and radiating surface 2 spacing are about 1-10cm.
Concrete, transducer 1 is immersed in water completely, and transducer 1 is outer guard shield (not shown), for the protection of transducer, and prevents electric leakage.
Preferably, transducer 1 operating frequency is 10kHz-100kHz.
Preferably, the average radiation sound intensity of transducer 1 is 2-6W/cm
2.
In the time of ultrasonic cavitation cloud control device work provided by the invention, need first transducer to be immersed in water completely, and then start transducer, to avoid transducer because zero load is burnt.
According to embodiments of the invention, a kind of ultrasonic cavitation cloud control method is provided, the flow chart of a kind of ultrasonic cavitation cloud control method that Fig. 5 provides for the embodiment of the present invention, as shown in Figure 5, comprises the steps: according to the ultrasonic cavitation cloud control method of the embodiment of the present invention
Concrete, cavitation cloud forms specifically and comprises: transducer converts electric energy to ultrasonic wave; Ultrasonic wave forms sound field by the radiating surface of described transducer; Gas core in current forms cavity under sound field reflecting, and a large amount of cavitys are assembled formation cavitation cloud.
A kind of ultrasonic cavitation cloud control device provided by the invention and method, by arranging multiple nozzles near sound field transducer radiating surface, by regulating position, the direction of nozzle and the flow rate of water flow ejecting, can form shape, the controlled cavitation cloud in position at transducer radiating surface front end.Simply and easily the shaped position of ultrasonic cavitation cloud is accurately controlled thereby realized, met demand cavitation cloud being control effectively at ultrasonic cleaning harmony chemical field.
The above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a ultrasonic cavitation cloud control device, is characterized in that, described device comprises:
Transducer, for converting electric energy to ultrasonic wave, described ultrasonic wave forms sound field by the radiating surface of described transducer;
Current divider, for the current that receive are shunted, has gas core in described current;
Control valve, is conducted with described current divider, the flow rate of water flow of described control valve for regulating described current divider to distribute;
Arm, is conducted with described control valve, and described arm is for delivery of described current;
Nozzle, is conducted with described arm, and for spraying described current to described radiating surface, described gas core forms cavity under the effect of described sound field in described current, and described cavity is assembled formation cavitation cloud;
Thereby the flow velocity of the described current that described nozzle sprays to described radiating surface by adjusting and direction are controlled the shape of described cavitation cloud.
2. ultrasonic cavitation cloud control device according to claim 1, is characterized in that, the quantity of described nozzle is multiple.
3. ultrasonic cavitation cloud control device according to claim 1, is characterized in that, the surface of described radiating surface is smooth surface.
4. ultrasonic cavitation cloud control device according to claim 1, is characterized in that, described device also comprises water pump, is conducted, for current being conveyed into described current divider with described current divider.
5. ultrasonic cavitation cloud control device according to claim 1, is characterized in that, described device also comprises support, and described nozzle support is on described support.
6. ultrasonic cavitation cloud control device according to claim 1, is characterized in that, the operating frequency of described transducer is 10kHz-100kHz.
7. ultrasonic cavitation cloud control device according to claim 1, is characterized in that, the average radiation sound intensity of described transducer is 2-6W/cm
2.
8. a ultrasonic cavitation cloud control method, is characterized in that, said method comprising the steps of:
Control valve shunted current flow to by current divider;
Described control valve carries out flowing to arm after velocity of flow adjust to described current;
Described current are flowed to nozzle by described arm;
Described nozzle sprays described current to the radiating surface of transducer;
Thereby control to flow velocity and the direction of the described current of described radiating surface injection the shape that described cavitation cloud forms by regulating described nozzle.
9. ultrasonic cavitation cloud control method according to claim 8, is characterized in that, described cavitation cloud forms specifically and comprises:
Described transducer converts electric energy to ultrasonic wave;
Described ultrasonic wave forms sound field by the radiating surface of described transducer;
Gas core in described current forms cavity under described sound field reflecting, and described cavity is assembled formation cavitation cloud.
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| CN201410103330.3A CN103831271A (en) | 2014-03-19 | 2014-03-19 | Ultrasonic cavitation cloud control device and ultrasonic cavitation cloud control method |
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Cited By (5)
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|---|---|---|---|---|
| CN104128328A (en) * | 2014-07-24 | 2014-11-05 | 中国科学院声学研究所 | Jetting and nucleus supplementing ultrasonic cavitation device and method |
| CN110802522A (en) * | 2019-09-23 | 2020-02-18 | 中国科学院宁波材料技术与工程研究所 | Ultrasonic cavitation shot blasting device and using method thereof |
| CN113102328A (en) * | 2021-03-26 | 2021-07-13 | 哈尔滨工程大学 | Net cleaning system and method for aquaculture net cage |
| CN114585452A (en) * | 2019-09-25 | 2022-06-03 | 里尔大学 | Device for cleaning a liquid-coated carrier element |
| CN115090596A (en) * | 2022-07-12 | 2022-09-23 | 江苏芯梦半导体设备有限公司 | Wafer cleaning equipment and cleaning method based on megasonic technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128328A (en) * | 2014-07-24 | 2014-11-05 | 中国科学院声学研究所 | Jetting and nucleus supplementing ultrasonic cavitation device and method |
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| CN114585452A (en) * | 2019-09-25 | 2022-06-03 | 里尔大学 | Device for cleaning a liquid-coated carrier element |
| CN114585452B (en) * | 2019-09-25 | 2023-10-24 | 里尔大学 | Device for cleaning a liquid-covered carrier element |
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| CN113102328B (en) * | 2021-03-26 | 2021-10-22 | 哈尔滨工程大学 | Net cleaning system and method for aquaculture net cage |
| CN115090596A (en) * | 2022-07-12 | 2022-09-23 | 江苏芯梦半导体设备有限公司 | Wafer cleaning equipment and cleaning method based on megasonic technology |
| CN115090596B (en) * | 2022-07-12 | 2023-09-05 | 江苏芯梦半导体设备有限公司 | Wafer cleaning equipment and method based on megasonic technology |
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Application publication date: 20140604 |