CN108722213B - Method and device for discharging bubbles by underwater high-voltage pulse - Google Patents
Method and device for discharging bubbles by underwater high-voltage pulse Download PDFInfo
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- CN108722213B CN108722213B CN201810564262.9A CN201810564262A CN108722213B CN 108722213 B CN108722213 B CN 108722213B CN 201810564262 A CN201810564262 A CN 201810564262A CN 108722213 B CN108722213 B CN 108722213B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/238—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using vibrations, electrical or magnetic energy, radiations
Abstract
The invention discloses an underwater high-voltage pulse discharging and electro-foaming method and device, wherein the device comprises an upper computer, a boosting module, an energy storage module, a high-voltage switch and a foaming module; the boosting module comprises a low-voltage power supply, a high-frequency boosting module and a voltage-doubling rectifying circuit, the upper computer is connected with a high-voltage switch through a single chip microcomputer controller, the low-voltage power supply is connected with the high-voltage switch through the high-frequency boosting module and the voltage-doubling rectifying circuit in sequence, and the energy storage module and the foam generation module are connected with the high-voltage switch. The device can adjust the position of cavitation bubbles generated by high-voltage pulse discharge through the discharge electrode, and change the size of the cavitation bubbles by increasing and decreasing the series quantity of the multiple voltage booster circuits, thereby forming the cavitation bubbles with accurate positions and controllable sizes.
Description
Technical Field
The invention relates to an underwater high-voltage pulse discharging bubble generating device and a using method thereof, belonging to the field of physics.
Background
Cavitation is a phenomenon which is common in rotating machinery using liquid as a medium, can cause the damage of a propeller of a ship, and even can damage solid materials such as a ship body and the like to cause serious consequences. With the scientific progress and development, the research on the phenomenon of cavitation is beneficial to reducing the harm of cavitation to underwater and water surface structures. Cavitation can also be used in a plurality of fields such as water treatment, medical cancer treatment, drug delivery in cells, cleaning of surfaces of fruits, vegetables and materials, and the like.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, solve the problems in the prior art and provide an underwater high-voltage pulse bubble discharging device and method, which are used for generating underwater cavitation bubbles.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme: an underwater high-voltage pulse discharging and foaming system comprises an upper computer, a boosting module, an energy storage module, a high-voltage switch and a foaming module;
the voltage boosting module comprises a low-voltage power supply, a high-frequency voltage boosting module and a voltage doubling rectifying circuit, the upper computer is connected with the high-voltage switch, the low-voltage power supply is connected with the high-voltage switch through the high-frequency voltage boosting module and the voltage doubling rectifying circuit in sequence, and the energy storage module and the foam generating module are connected with the high-voltage switch.
The voltage doubling rectifying circuit adopts a Wolton voltage doubling rectifying circuit and comprises a diode and a high-voltage ceramic chip capacitor.
The energy storage module is formed by connecting a plurality of same high-voltage ceramic chip capacitors in series and parallel, the capacitance value of each ceramic chip capacitor is 0.1uF, the withstand voltage value is 2kV, the whole energy storage module is provided with a plurality of branches in parallel, and each branch is formed by connecting a plurality of capacitors in series.
The high-voltage switch comprises a high-voltage switch main body and a control unit of the high-voltage switch;
the high-voltage switch main body comprises a stepping motor, an acrylic cylinder, a coupler and three metal contacts, wherein the stepping motor is connected with the acrylic cylinder through the coupler, one metal contact is installed in the normal direction of the end point of the acrylic cylinder far away from one end of the coupler and serves as a movable contact of the high-voltage switch, two metal contacts are installed on the plane which is in the same plane with the movable contact and perpendicular to a shaft of the stepping motor and serve as static contacts of the high-voltage switch, namely a charging contact and a discharging contact respectively, the charging contact is connected with a charging circuit, the discharging contact is connected with a discharging circuit, and the movable contact is a common contact of two loops; the energy storage module is charged or discharged by controlling the rotation of the stepping motor and further driving the movable contact point on the acrylic cylinder to contact one of the two fixed contacts.
The control unit of the high-voltage switch comprises a single chip microcomputer controller, a motor driver and a Bluetooth module, wherein the Bluetooth module and the motor driver are directly connected with the single chip microcomputer controller, when the switch needs to be actuated, the Bluetooth module at the mobile phone end is connected with the Bluetooth module of the control unit of the high-voltage switch and sends an actuating command of the switch to the Bluetooth module, the Bluetooth module receives the command and then transmits the command to the single chip microcomputer controller, the single chip microcomputer controller identifies the received command and then sends a corresponding pulse signal to the stepping motor driver according to the command, and then the stepping motor is controlled to rotate so that the movable contact is in contact with a corresponding static contact, and program control of opening and closing of the high-voltage switch contact.
The single-chip microcomputer controller is an STC89C52 single-chip microcomputer.
The upper computer is compiled by using a C #, and is communicated with the single chip microcomputer controller through the Bluetooth to control the charging process and the discharging process of the device.
The bubble generating module comprises a discharge electrode and a fixing device thereof, wherein the discharge electrode adopts a polishing tungsten rod as the discharge electrode.
The use method of the underwater high-voltage pulse discharge bubble utilizes the device and comprises the following steps:
the method includes the steps that a switch button of a single chip microcomputer controller is started, initialization work of the single chip microcomputer controller is completed, and wireless Bluetooth connection between the single chip microcomputer controller and an upper computer is established;
secondly, adjusting the foam generating module device and putting the foam generating module device into water at an accurate position;
clicking a rough adjustment and fine adjustment button of a motor in the upper computer to control the high-voltage switch to rotate to an initial position;
turning on a low-voltage power switch and adjusting the input of a low-voltage power supply;
sending a charging command to the control unit of the high-voltage switch through the Bluetooth, and after receiving the command, controlling the charging contact of the high-voltage switch to be closed;
sixthly, waiting for a plurality of times, sending a discharge command to a control unit of the high-voltage switch through Bluetooth, and controlling a discharge contact of the high-voltage switch to be closed after the control unit receives the command;
and ending the bulb causing, and closing the low-voltage power switch and the singlechip controller switch.
The invention has the following beneficial effects:
the invention generates high-voltage pulse in water through the discharge electrode and generates cavitation bubbles in water through pulse discharge. Cavitation bubbles with accurate positions and controllable sizes are generated by adjusting the positions of the discharge electrodes to increase and decrease the number of the series connection of the voltage boosting circuits.
Drawings
FIG. 1 is a block diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a ten-fold voltage module structure of the present invention;
FIG. 3 is a circuit block diagram of the energy storage module of the present invention;
FIG. 4 is an equivalent capacitance of the energy storage module;
FIG. 5 is a structural diagram of the main body of the high-voltage switch of the present invention;
FIG. 6 is a schematic circuit diagram of the high voltage switch control unit of the present invention;
FIG. 7 is a schematic view of the discharge electrode structure of the present invention;
FIG. 8 is a schematic of a host computer of the present invention;
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, an underwater high-voltage pulse discharging and foaming device is characterized by comprising an upper computer, a boosting module, an energy storage module, a high-voltage switch and a foaming module;
the voltage boosting module comprises a low-voltage power supply, a high-frequency voltage boosting module and a voltage doubling rectifying circuit, the upper computer is connected with the high-voltage switch, the low-voltage power supply is connected with the high-voltage switch through the high-frequency voltage boosting module and the voltage doubling rectifying circuit in sequence, and the energy storage module and the foam generating module are connected with the high-voltage switch.
The low-voltage power supply is provided by an adjustable switching power supply, and the adjusting range is DC 5-12V. The high-frequency boosting module is a kilovolt high-frequency high-voltage board CL-1 circuit board, the direct-current low voltage of a low-voltage power supply is used as input, the output frequency is about 47kHz, the voltage range is 1000-2000V alternating-current voltage, the output changes along with the direct-current input change provided by the low-voltage power supply, the output of the CL-1 circuit board is used as the input of a multi-voltage circuit, a voltage doubling circuit in the boosting circuit board adopts a Volteron multi-voltage rectifying circuit and is composed of a diode and a high-voltage ceramic capacitor, as shown in figure 2, terminals a and b are connected with the alternating-current voltage input, terminals e and f output direct-current voltage, and when a plurality of circuits need to be connected in series, the end points a and b of the latter voltage doubling circuit are respectively connected with the end points c and d of the former voltage doubling circuit. From the foregoing circuit analysis, it can be seen that:
where k is a voltage doubling multiple of the circuit, and k is 10 in the above-mentioned voltage doubling circuit. Considering that diodes and capacitors of the multi-voltage circuit are not ideal devices, and loss is generated when the circuit works, so that the voltage of actual output is reduced, the boost circuit is formed by connecting two ten-fold-voltage rectifying circuits in series, and the maximum output voltage can reach 15 kV.
As shown in fig. 3, the energy storage module is formed by connecting 400 identical high-voltage ceramic capacitors in series and parallel, the capacitance value of the ceramic capacitor is 0.1uF, the withstand voltage value is 2kV, 20 branches of the whole energy storage module are connected in parallel, and each branch is formed by connecting 20 capacitors in series.
Let the equivalent capacitance of branch 1 be Ceq1From the capacitance series equation
Since each branch is the same, there are
Ceq1＝Ceq2＝Ceq3＝L＝Ceq20＝0.005uF
Wherein, the withstand voltage value of each branch equivalent capacitor is 20 × 2 kV-40 kV, and the parallel 20 branches can be equivalent to a capacitor CeqFrom the parallel capacitance equation
Ceq＝Ceq1+Ceq2+Ceq3+L+Ceq20＝20Ceq1＝0.1uF
Wherein, the equivalent capacitance CeqThe withstand voltage value of 40kV through the above analysis, it can be known that the whole energy storage module can be equivalent to the capacitor shown in FIG. 4, the capacitance value of the equivalent capacitor is 0.1uF, and the withstand voltage value is 40 kV.
As shown in fig. 5, the high voltage switch includes a high voltage switch main body and a control unit of the high voltage switch. The high-voltage switch main part includes step motor 1, ya keli cylinder 3, shaft coupling 2 and three metal contact, step motor 1 passes through shaft coupling 2 and is connected with ya keli cylinder 3, keep away from the normal direction of shaft coupling one end termination point at ya keli cylinder 3 and install a metal contact as high-voltage switch's movable contact 4, be in with the movable contact coplanar and with step motor shaft vertically plane on install two metal contact as high-voltage switch's stationary contact, be charging contact 5 and discharge contact 6 respectively, wherein, charging contact 5 connects charging circuit, discharge contact 6 connects discharge circuit, the movable contact is the common contact in two return circuits. The stepping motor is controlled to rotate through a program, and then the movable contact on the acrylic cylinder is driven to contact with a certain fixed contact, so that the energy storage module is charged or discharged. The acrylic material has excellent insulating property, and the movable contact is isolated by the acrylic cylinder 3, so that the operation of the stepping motor 1 is not influenced by a high-voltage electric loop.
The control unit of the high-voltage switch comprises a single chip microcomputer controller, a motor drive and a Bluetooth module, wherein the Bluetooth module and the motor drive are directly connected with the single chip microcomputer controller. When the switch needs to be actuated, the Bluetooth module of the high-voltage switch control unit is connected through the Bluetooth of the mobile phone end, then an actuating command of the switch is sent to the Bluetooth module, the Bluetooth module receives the command and then transmits the command to the single chip microcomputer controller, the single chip microcomputer controller identifies the received command and then sends a corresponding pulse signal to the stepping motor to drive the stepping motor according to the command, and then the stepping motor is controlled to rotate to enable the movable contact to be in contact with the corresponding fixed contact, and program control of opening and closing of the high-voltage switch contact is achieved. The singlechip controller is an STC89C52 singlechip.
The hardware design of the high-voltage switch control unit is mainly the design of a high-voltage switch control unit circuit, and comprises an interface design of an STC89C52 single chip microcomputer and a Bluetooth module, an interface design of an STC89C52 single chip microcomputer and a motor drive and a circuit connection diagram thereof, wherein the circuit principle diagram of the high-voltage switch control unit is shown in figure 6. The control circuit is simple, the STC89C52 singlechip can use an STC89C52 singlechip with simple programming, and the STC89C52 singlechip is provided with a full-duplex serial port and can be used for carrying out data transmission with Bluetooth; the Bluetooth module adopts an HC-05 Bluetooth module, the HC05 is a master-slave integrated Bluetooth serial port module, a USB-to-serial port is provided, and the Bluetooth module can be directly used as a serial port to be connected with an STC89C52 single chip microcomputer and is simple to use; the stepper motor drive is a TB6560-V3 drive. The power supply voltage of the STC89C52 single chip microcomputer and the Bluetooth is 5V, and the power supply voltage of the driver is 24V. The STC89C52 single chip microcomputer is connected with the Bluetooth through a serial port, wherein a data receiving pin of the STC89C52 single chip microcomputer is connected with a data sending pin of the serial port of the Bluetooth module, and the data sending pin is connected with a data receiving pin of the serial port of the Bluetooth module. The motor driver adopts a common cathode wiring method, an enabling negative terminal EN-, a direction negative terminal DIR-and a pulse negative terminal PUL-are connected with a low level, an enabling positive terminal EN +, a direction positive terminal DIR + and a pulse positive terminal PUL + are respectively connected with a port P1.0, a port P1.1 and a port P1.2 of an STC89C52 singlechip, the high levels are effective and are respectively used for outputting signals for enabling the motor and controlling the rotation direction and the rotation step number of the motor, and four terminals A +, A-, B-and B-of the driver are interfaces connected with two-phase four-wire stepping motors.
As shown in fig. 7, the bubble generating module includes a discharge electrode 14 and a fixing device thereof, the discharge electrode uses a polished tungsten rod as the discharge electrode, the diameter of the discharge electrode is selectable, and is generally 0.5mm, the fixing device is composed of an insulating outer sleeve 11, a fixing rod 12 and a fixing screw 13, and the discharge distance of the discharge electrode can be changed by adjusting the fixing rod.
As shown in fig. 8, the upper computer is programmed by using a C #, and communicates with the STC89C52 single chip microcomputer controller through bluetooth to control the charging process and the discharging process of the device.
An underwater high-voltage pulse discharge bubble using method comprises the following steps:
the method comprises the steps of starting a switch button of an STC89C52 single chip microcomputer controller, finishing initialization work of the STC89C52 single chip microcomputer controller, and establishing wireless Bluetooth connection between the STC89C52 single chip microcomputer controller and an upper computer;
adjusting a fixing device of the discharging module to enable the discharging electrode to be placed in the water at an accurate position;
clicking a rough adjustment and fine adjustment button of a motor in the upper computer to control the high-voltage switch to rotate to an initial position;
turning on a low-voltage power switch and adjusting the input of a low-voltage power supply;
sending a charging command to the control unit of the high-voltage switch through the Bluetooth, and after receiving the command, controlling the charging contact of the high-voltage switch to be closed;
sixthly, waiting for a plurality of times, sending a discharge command to a control unit of the high-voltage switch through Bluetooth, and controlling a discharge contact of the high-voltage switch to be closed after the control unit receives the command;
and ending the bulb-killing, and closing the low-voltage power switch and the STC89C52 single-chip microcomputer controller switch.
Claims (6)
1. An underwater high-voltage pulse discharging bubble generating device is characterized by comprising an upper computer, a boosting module, an energy storage module, a high-voltage switch and a bubble generating module;
the upper computer is connected with the high-voltage switch, the low-voltage power supply is connected with the high-voltage switch through the high-frequency boosting module and the voltage-doubling rectifying circuit in sequence, and the energy storage module and the foam generation module are connected with the high-voltage switch;
the high-voltage switch comprises a high-voltage switch main body and a control unit of the high-voltage switch;
the high-voltage switch main body comprises a stepping motor, an acrylic cylinder, a coupler and three metal contacts, wherein the stepping motor is connected with the acrylic cylinder through the coupler, one metal contact is installed in the normal direction of the end point of the acrylic cylinder far away from one end of the coupler and serves as a movable contact of the high-voltage switch, two metal contacts are installed on the plane which is in the same plane with the movable contact and perpendicular to a shaft of the stepping motor and serve as static contacts of the high-voltage switch, namely a charging contact and a discharging contact respectively, the charging contact is connected with a charging circuit, the discharging contact is connected with a discharging circuit, and the movable contact is a common contact of two loops; the step motor is controlled to rotate, so that the movable contact point on the acrylic cylinder is driven to contact one of the two fixed contacts to realize the charging or discharging of the energy storage module;
the control unit of the high-voltage switch comprises a single chip microcomputer controller, a motor driver and a Bluetooth module, wherein the Bluetooth module and the motor driver are directly connected with the single chip microcomputer controller, when the switch needs to be actuated, the Bluetooth module at the mobile phone end is connected with the Bluetooth module of the control unit of the high-voltage switch and sends an actuating command of the switch to the Bluetooth module, the Bluetooth module receives the command and then transmits the command to the single chip microcomputer controller, the single chip microcomputer controller identifies the received command and then sends a corresponding pulse signal to the stepping motor driver according to the command, and then the stepping motor is controlled to rotate so that the movable contact is in contact with a corresponding static contact, and program control of opening and closing of the high-voltage switch contact is realized.
2. The underwater high-voltage pulse discharging bubble device according to claim 1, wherein the voltage-doubling rectifying circuit adopts a Wolton voltage-doubling rectifying circuit, and comprises a diode and a high-voltage ceramic capacitor.
3. The underwater high-voltage pulse discharging device of claim 1, wherein the energy storage module is formed by connecting a plurality of identical high-voltage ceramic capacitors in series and in parallel, the ceramic capacitors have a capacitance value of 0.1uF and a withstand voltage of 2kV, the whole energy storage module is provided with a plurality of branches in parallel, and each branch is formed by connecting a plurality of capacitors in series.
4. The underwater high-voltage pulse discharging device of claim 1, wherein the upper computer is programmed by using a computer model C #, and is communicated with the singlechip controller through Bluetooth to control the charging process and the discharging process of the device.
5. The underwater high-voltage pulse discharging bubble device of claim 1, wherein the bubble generating module comprises a discharge electrode and a fixing device thereof, and the discharge electrode adopts a polished tungsten rod as the discharge electrode.
6. An underwater high-voltage pulse discharging method for using the electric bubble, which is characterized in that the device of claim 1 is used, and the steps are as follows:
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810564262.9A CN108722213B (en) | 2018-06-04 | 2018-06-04 | Method and device for discharging bubbles by underwater high-voltage pulse |
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| CN201810564262.9A CN108722213B (en) | 2018-06-04 | 2018-06-04 | Method and device for discharging bubbles by underwater high-voltage pulse |
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| CN108722213B true CN108722213B (en) | 2021-09-07 |
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| CN110733616B (en) * | 2019-10-28 | 2021-09-14 | 河海大学常州校区 | High-voltage pulse discharge hull surface cleaning device and method carried by underwater robot |
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| CN102141523A (en) * | 2010-12-23 | 2011-08-03 | 哈尔滨工程大学 | Experimental device and experimental method for generation of bubbles of electric spark in water |
| CN103528793A (en) * | 2013-10-27 | 2014-01-22 | 广西科技大学 | Underwater high-voltage discharge bubble generation device |
| CN104330049A (en) * | 2014-09-28 | 2015-02-04 | 北京联合大学 | Portable locomotive vehicle wheel pair surface wearing automatic detection device and detection method |
| WO2017149654A1 (en) * | 2016-03-01 | 2017-09-08 | ヒロセ・ユニエンス株式会社 | Gas introducing/retaining device, gas introducing/retaining method, and gas release head |
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- 2018-06-04 CN CN201810564262.9A patent/CN108722213B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141523A (en) * | 2010-12-23 | 2011-08-03 | 哈尔滨工程大学 | Experimental device and experimental method for generation of bubbles of electric spark in water |
| CN103528793A (en) * | 2013-10-27 | 2014-01-22 | 广西科技大学 | Underwater high-voltage discharge bubble generation device |
| CN104330049A (en) * | 2014-09-28 | 2015-02-04 | 北京联合大学 | Portable locomotive vehicle wheel pair surface wearing automatic detection device and detection method |
| WO2017149654A1 (en) * | 2016-03-01 | 2017-09-08 | ヒロセ・ユニエンス株式会社 | Gas introducing/retaining device, gas introducing/retaining method, and gas release head |
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