CN104792492A - Size controllable low-voltage bubble generation experimental set - Google Patents
Size controllable low-voltage bubble generation experimental set Download PDFInfo
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Abstract
The invention relates to a size controllable low-voltage bubble generation experimental set which is safe and reliable and which is based on a common AC power supply. The size controllable low-voltage bubble generation experimental set comprises a low-voltage bubble generator, a high-speed motion analysis system and a bubble generation observation assist system. An input terminal of an AC-DC power supply U of the low-voltage bubble generator is connected to an AC circuit; an output terminal thereof is serially connected with a protective resistor R, a charge capacitor C and a first AC contactor KM1, forming a charge circuit; the charge capacitor C1 is serially connected with a discharge output terminal and a second AC contactor KM2, forming a discharge circuit; the first AC contactor KM1 is serially connected with a first charge switch k1 and a first charge indicator light L1 of a control panel, to an AC circuit. The size controllable low-voltage bubble generation experimental set is capable of generating controllable diameter bubbles at a specific position in the safe low-voltage environment and allows the generation to collapse process of the bubbles to be observed and analyzed.
Description
Technical field
What the present invention relates to is a kind of low-voltage bubble generation experimental provision controlled based on the safe and reliable size of conventional AC power.
Background technology
The dynamic perfromance of underwater bubble is the important foundation sex chromosome mosaicism that each research field of modern science is concerned about always, has the investigation and application about bubble in every field such as boats and ships, ocean, medical treatment, industry.But the bubble scale that underwater blast produces is huge, is difficult to study in laboratory environment.The high expense of each underwater blast experiment also limit carrying out its research, and explosion test is difficult to repeat.In order to research bubble dynamic perfromance under water that can be economic, safe, repeatable in laboratory environments, lot of domestic and international laboratory generates bubble all in the sink.But a lot of device circuit is complicated, and complex operation, has very high technical requirement to experimenter.Meanwhile, a lot of bubble generator can only for a kind of or a few experiment condition design, and cost high pass is poor by property, extensively can not adapt to different bubble experiment demands.Therefore, the adjustable low-voltage bubble designing a set of integration occurs and image pickup method, by control circuit is packaged into integration apparatus, provides guidance panel intuitively, directly use switch control rule charging voltage and trigger instants by experimenter, greatly can simplify the difficulty of bubble experimental implementation.Experimental trough, by the guide rail of level and vertical sliding motion and electrode accurately can controlling bubble and produce position, improves experimental precision.The method that this type of bubble experimental study is traditional at present carries out charge detonation experiment, and apparatus of the present invention have the advantages such as cost is low, experimental situation is loose, experimental period is short, simple to operate, safe and reliable relative to charge detonation experiment, utilize guidance panel safety, regulate charging voltage intuitively, the bubble of different size can being generated, to studying bubble dynamic perfromance under water, there is very high practical value.
Document related to the present invention and patent have: 1, corona discharge pulse plasma characteristics and bubble motion in water, " High-Voltage Technology "; 2, laser steeps the testing and analyzing of most bulla radius, " hydrodynamics research and advances (A collects) ".Its Literature 1: adopt corona discharge pulse experiment in Large space water, charge voltage range is 2.5-10KV, different from the experimental technique that the employing conventional AC power of this patent generates bubble.Operability of the present invention, repeatability, security are that it does not possess.Document 2: the motion adopting high-speed camera record gas bubble in underwater explosion.The method experimental cost is high, and complicated operation is long for experimental period, and is difficult to repeat.The present invention well solves the difficult problem that the method faces, and has very high practical value.
In sum, the document published and the present invention all have bigger difference, and there is no related application.The present invention occurs than bubble in the past and technique for taking all has huge advantage on operability, repeatability, security, experimental period, experimental cost.
Summary of the invention
The object of the present invention is to provide a kind of be applied to bubble under water generation, observation, research and utilization guidance panel safety, regulate charging voltage intuitively, with the low-voltage bubble generation experimental provision that the size meeting different experiment demands is controlled.
The object of the present invention is achieved like this:
The low-voltage bubble generation experimental provision that size is controlled, comprises the observation backup system of low-voltage bubble generator, rockslide avalanches, bubble formation:
In the input terminal incoming transport circuit of low-voltage bubble generator circulation direct supply U, lead-out terminal is connected with protective resistance R, charging capacitor C, the first A.C. contactor KM1, form charging circuit, charging capacitor C and electric discharge lead-out terminal, the second A.C. contactor KM2 discharge circuit in series simultaneously, the first A.C. contactor KM1 connects with the first charge switch K1, the first charging indicator light L1 of control panel and accesses in alternating circuit; Second A.C. contactor KM2 connects with the second charge switch K2, the second charging indicator light L2 of control panel and accesses in alternating circuit; The voltage table V of control panel is in parallel with charging capacitor C, the folding that control circuit directly controls charging circuit and discharge circuit is formed by the element of the first A.C. contactor, the second A.C. contactor and control panel, because charging circuit and discharge circuit are all in parallel with charging capacitor C, synchronization only allows a circuit communication;
Rockslide avalanches comprises high-speed camera Phantom V12.1 and processes bubble radius, movement locus and speed experiments data in image, specifies frame number to export AVI video file simultaneously;
The observation backup system of bubble formation comprises continuous light source, experimental trough and rail plate, continuous light source adopts rated power to be the soft light of 2000W, experimental trough design size is 1200mm × 1200mm × 1200mm, each all adopts thickness to be the high light transmittance acrylic material of 15mm, adopts the metal framework that 5 bugle steel are integrally welded outside tank; Rail plate, has X-direction and Y direction degree of freedom in the horizontal direction; Simultaneously in order to control the height of bubble apart from free face, guide rail top electrode also has the degree of freedom in vertical Z direction.
Beneficial effect of the present invention is: this invention can generate the controlled bubble of diameter at assigned address under the security context of low-voltage, and can carry out observation and analysis to bubble from being generated to the process crumbled and fall.
Accompanying drawing explanation
The low-voltage bubble generation experimental provision that Fig. 1 size is controlled and professional measuring system schematic diagram thereof;
The low-voltage bubble generation experimental provision circuit diagram that Fig. 2 size is controlled;
Fig. 3 rail plate schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
The invention provides the bubble formation under water of a set of maturation, shooting, analytical technology, can the underwater dynamic process of simulated bubble in the lab.This covering device comprises low-voltage bubble generator, high-speed camera, computing machine, continuous soft light source, guide rail, copper wire, electrode and tank.The copper wire 8 be wrapped on electrode 7 produces the bubble of different-diameter under difference requires under the effect of low-voltage bubble generator 2.The guide rail 3 be fixed on tank 4 can control the position that bubble occurs.Being convenient to make the bubble generated observe, coordinating with the soft light source 1 of continuous print.After bubble formation, high-speed camera 6 can catch it, and the image caught is transmitted to computing machine 5 so that the analysis of software.
The data acquisition treatment method of the low-voltage bubble generation experimental provision that the size of set of system is controlled and specialty, can the underwater dynamic process of simulated bubble in the lab.This device comprises the observation backup system of low-voltage bubble generator, rockslide avalanches, bubble formation:
(1) the low-voltage bubble generation experimental provision that size is controlled
The controlled low-voltage bubble generation experimental provision of size is the design of rectangular parallelepiped box, and its internal connection circuit figure as shown in Figure 2.In the input terminal incoming transport circuit of AC/DC power U, lead-out terminal is connected with protective resistance R, charging capacitor C, A.C. contactor KM1, forms charging circuit.Charging capacitor C and electric discharge lead-out terminal, A.C. contactor KM2 discharge circuit in series simultaneously.A.C. contactor KM1 connects with charge switch K1, the charging indicator light L1 of control panel and accesses in alternating circuit; A.C. contactor KM2 connects with charge switch K2, the charging indicator light L2 of control panel and accesses in alternating circuit; The voltage table V of control panel is in parallel with charging capacitor C.Form by the element of KM1, KM2 and control panel the folding that control circuit directly controls charging circuit and discharge circuit, because charging circuit and discharge circuit are all in parallel with charging capacitor C, synchronization only allows a circuit communication.Finally can realize the acquisition of the DC voltage of 0-200V, to reach the different object generating the bubble of different size.
(2) rockslide avalanches
Rockslide avalanches is made up of high-speed camera Phantom V12.1 and supporting analysis software Phantom.This high-speed camera ultimate resolution is the HD video image of 1280 × 800, and capture rate is 6242 frames/s; Maximum shooting speed is 650000 frames/s, can record the high-speed image of 256 × 16 resolution.By supporting Phantom analysis software, can process experimental datas such as bubble radius, movement locus and speed in image, frame number can be specified simultaneously to export AVI video file.
(3) the observation backup system of bubble formation
The backup system of bubble formation comprises continuous light source, experimental trough and rail plate.
The soft light of to be rated power the be 2000W that continuous light source adopts, the light-inletting quantity Reasonable adjustment light-source brightness that should need according to high-speed camera during use, obtain high-quality shooting picture, avoids because under-exposed or overexposure causes picture detail to lose.
Experimental trough design size is 1200mm × 1200mm × 1200mm, and each all adopts thickness to be the high light transmittance acrylic material of 15mm, adapt to different experiments requirement.In order to ensure the watertightness that tank is good, ensure tank intensity, outside this tank, adopt the metal framework that 5 bugle steel are integrally welded.
Rail plate, has X-direction and Y direction degree of freedom in the horizontal direction; Simultaneously in order to control the height of bubble apart from free face, guide rail top electrode also has the degree of freedom in vertical Z direction, as shown in Figure 3.
As Fig. 1 size can control shown in low-voltage bubble generation experimental provision and professional measuring system schematic diagram thereof: electrode 7 is placed in the tank 4 filling water, tank is fixed with rail plate 3.The side of tank is soft light source 1, and opposite side is used to the video camera 6 taking bubble, and video camera connects computer 5, to analyze.The controlled low-voltage bubble generator 2 of size is connected with electrode, electrode is wrapped copper wire 8.According to the requirement generating different size bubble, bubble generator 2 can load the voltage of different size on electrode 7, and the copper wire 8 be wrapped on electrode will generate the bubble of different size.And rail plate on tank 4 can the position of traveling electrode and copper wire, the position gassing so just can wanted.Under the effect of soft light source 1, the photo that high-speed camera 6 is taken can be more clear, and the image of acquisition can be analyzed in computer 5.
This experimental provision provides the data acquisition treatment method of the controlled low-voltage bubble generation experimental provision of a whole set of size and specialty.All appts is powered by conventional AC power, requires loose to experimental situation.The adjustable design of low pressure of the low-voltage bubble generation experimental provision original creation that size is controlled, charging capacitor design can stored voltage scope be 0-200V, by the charging voltage table accurate surveying capacitor charging situation of guidance panel, and quarter, closed charge switch made capacitance voltage meet requirement of experiment when appropriate.By this equipment, can repeat the bubbles of electric spark generating same scale, record bubble produces the physical process crumbled and fall, and gathers the experimental datas such as bubble radius, speed, movement locus.Also can generate different scale bubble at assigned address, inquire into the Similarity Transformation problem of bubble scale effect and bubbles of electric spark and gas bubble in underwater explosion.In addition, the present invention devises a series of safety practice, guarantees the safe and reliable of experiment.
(1) size controlled low-voltage bubble generation experimental provision
Size controlled low-voltage bubble generation experimental provision can generate the bubble of different scale.
The design concept of generating means adopts electric spark be different from and use laser to occur.Avoid the method experimental cost high, complicated operation is long for experimental period, and is difficult to the shortcoming that repeats.
This equipment has the adjustable design of output voltage, accurately can export the size that 0 ~ 200V stable DC voltage can control to generate bubble, meet different experiment demands.
Employing conventional AC power is powered, and versatility is good; Adopt corona discharge pulse experiment in Large space water, charge voltage range is 2.5-10KV, and by comparison, this device possesses appreciable security.
The control system of this device employs simple and clear control panel intuitively, and all devices function and operating condition, all by guidance panel reaction, only need easily realize given voltage electric discharge by two switches, easy and simple to handle; And can select identical voltage repeat experiment, possess good repeatability.
(2) rockslide avalanches
Rockslide avalanches is made up of high-speed camera Phantom V12.1 and supporting analysis software Phantom.This high-speed camera function is the HD video image of 1280 × 800 in the speed shooting resolution of 6242 frames/s, also can take the high-speed image up to 650000 frames/s under the resolution of 256 × 16, guarantee to record all physical processes of bubbles of electric spark dynamic perfromance under water.By supporting Phantom analysis software, collection analysis can be carried out to experimental datas such as bubble radius, movement locus and speed in image, export AVI video file at a slow speed.
(3) bubble formation and observation backup system
Bubble formation comprises continuous light source, experimental trough and rail plate without observation backup system.The soft light of to be rated power the be 2000W that continuous light source adopts, answers Reasonable adjustment light-source brightness, makes high-speed camera can obtain enough light when taking, but can not lose picture detail because of overexposure during use.In order to accurately control the position that bubble produces in the sink, water tank devises can the guide rail of horizontal slip, and this guide rail can slide along X-axis and Y-axis in the horizontal direction; In order to control the distance of bubble from free face, guide rail top electrode also has the degree of freedom of vertical direction.End, near copper wire place, is provided with the Vertical surveyors' staff for proofreading engineer's scale under the electrodes simultaneously.
As shown in Fig. 1 Fig. 2: electrode 7 is placed in the tank 4 filling water, tank is fixed with rail plate 3.The side of tank is soft light source 1, and opposite side is used to the video camera 6 taking bubble, and video camera connects computer 5, to analyze.The controlled low-voltage bubble generator 2 of size is connected with electrode, electrode is wrapped copper wire 8.The voltage of low-voltage bubble generator 2 input that size is controlled is 220V alternating current, and be connected in power supply slot by 220V alternating current by power lead, device brings into operation.Closed charge switch K1, A.C. contactor KM1, the bright L1 of charging indicator light, starts as electric capacity C charges, the voltage at voltage table instruction electric capacity two ends, and the reading of voltage table can between 0 ~ 220V; When the reading of voltage table arrives requirement of experiment, charge closing K switch 1, A.C. contactor KM1, charging instruction L1 lamp goes out; Closed discharge switch K2, A.C. contactor KM1, the bright L2 of discharge indicating lamp, circuit discharging, the copper wire 8 be wrapped on electrode will generate the bubble of controlled dimensions according to specific voltage.And rail plate on tank 4 can the position of traveling electrode and copper wire, the position gassing so just can wanted.Under the effect of soft light source 1, the photo that high-speed camera 6 is taken can be more clear, and the image of acquisition can be analyzed in computer 5.
Claims (1)
1. the low-voltage bubble generation experimental provision that size is controlled, comprises the observation backup system of low-voltage bubble generator, rockslide avalanches, bubble formation, it is characterized in that:
In the input terminal incoming transport circuit of low-voltage bubble generator circulation direct supply U, lead-out terminal is connected with protective resistance R, charging capacitor C, the first A.C. contactor KM1, form charging circuit, charging capacitor C and electric discharge lead-out terminal, the second A.C. contactor KM2 discharge circuit in series simultaneously, the first A.C. contactor KM1 connects with the first charge switch K1, the first charging indicator light L1 of control panel and accesses in alternating circuit; Second A.C. contactor KM2 connects with the second charge switch K2, the second charging indicator light L2 of control panel and accesses in alternating circuit; The voltage table V of control panel is in parallel with charging capacitor C, the folding that control circuit directly controls charging circuit and discharge circuit is formed by the element of the first A.C. contactor, the second A.C. contactor and control panel, because charging circuit and discharge circuit are all in parallel with charging capacitor C, synchronization only allows a circuit communication;
Rockslide avalanches comprises high-speed camera Phantom V12.1 and processes bubble radius, movement locus and speed experiments data in image, specifies frame number to export AVI video file simultaneously;
The observation backup system of bubble formation comprises continuous light source, experimental trough and rail plate, continuous light source adopts rated power to be the soft light of 2000W, experimental trough design size is 1200mm × 1200mm × 1200mm, each all adopts thickness to be the high light transmittance acrylic material of 15mm, adopts the metal framework that 5 bugle steel are integrally welded outside tank; Rail plate, has X-direction and Y direction degree of freedom in the horizontal direction; Simultaneously in order to control the height of bubble apart from free face, guide rail top electrode also has the degree of freedom in vertical Z direction.
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| CN107202791A (en) * | 2017-06-16 | 2017-09-26 | 西安交通大学 | A kind of apparatus and method by chopping the light control optoelectronic pole blibbing behavior |
| CN108007669A (en) * | 2017-11-10 | 2018-05-08 | 哈尔滨工程大学 | A kind of device of real-time tracing ascending gas bubbles dynamic characteristic and Field Characteristics |
| CN108257486A (en) * | 2018-03-14 | 2018-07-06 | 北京理工大学 | A kind of underwater more bubble formation experimental rigs of accurate control |
| CN108572233A (en) * | 2018-04-12 | 2018-09-25 | 西安交通大学 | A kind of apparatus and method regulating and controlling bubbling behaviour by a variety of external disturbance modes |
| CN108896106A (en) * | 2018-03-30 | 2018-11-27 | 北京理工大学 | A kind of list bubble collapse and more field measurement platforms of material boundary coupled characteristic |
| CN109058563A (en) * | 2018-10-08 | 2018-12-21 | 哈尔滨工程大学 | High pressure bubble source under a kind of Pneumatic water |
| CN110346113A (en) * | 2019-08-15 | 2019-10-18 | 清华大学 | Low pressure electric spark cavitation experimental provision |
| CN112665822A (en) * | 2021-01-05 | 2021-04-16 | 西安交通大学 | Method for determining bubble kinetic parameters under motion condition |
| CN113324731A (en) * | 2021-05-17 | 2021-08-31 | 哈尔滨工程大学 | Experimental device for be used for research of underwater shear flow field electric spark bubble |
| CN114184351A (en) * | 2021-11-26 | 2022-03-15 | 哈尔滨工程大学 | Conveniently-adjusted electric spark bubble generation device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202791A (en) * | 2017-06-16 | 2017-09-26 | 西安交通大学 | A kind of apparatus and method by chopping the light control optoelectronic pole blibbing behavior |
| CN107202791B (en) * | 2017-06-16 | 2019-11-08 | 西安交通大学 | A kind of apparatus and method controlling the behavior of optoelectronic pole blibbing by chopping the light |
| CN108007669B (en) * | 2017-11-10 | 2023-10-27 | 哈尔滨工程大学 | Device for tracking dynamic characteristics and flow field characteristics of floating bubbles in real time |
| CN108007669A (en) * | 2017-11-10 | 2018-05-08 | 哈尔滨工程大学 | A kind of device of real-time tracing ascending gas bubbles dynamic characteristic and Field Characteristics |
| CN108257486A (en) * | 2018-03-14 | 2018-07-06 | 北京理工大学 | A kind of underwater more bubble formation experimental rigs of accurate control |
| CN108896106A (en) * | 2018-03-30 | 2018-11-27 | 北京理工大学 | A kind of list bubble collapse and more field measurement platforms of material boundary coupled characteristic |
| CN108572233A (en) * | 2018-04-12 | 2018-09-25 | 西安交通大学 | A kind of apparatus and method regulating and controlling bubbling behaviour by a variety of external disturbance modes |
| CN109058563A (en) * | 2018-10-08 | 2018-12-21 | 哈尔滨工程大学 | High pressure bubble source under a kind of Pneumatic water |
| CN109058563B (en) * | 2018-10-08 | 2023-12-12 | 哈尔滨工程大学 | Pneumatic type underwater high-pressure bubble source |
| CN110346113A (en) * | 2019-08-15 | 2019-10-18 | 清华大学 | Low pressure electric spark cavitation experimental provision |
| CN112665822B (en) * | 2021-01-05 | 2022-12-09 | 西安交通大学 | Bubble kinetic parameter determination method under motion condition |
| CN112665822A (en) * | 2021-01-05 | 2021-04-16 | 西安交通大学 | Method for determining bubble kinetic parameters under motion condition |
| CN113324731A (en) * | 2021-05-17 | 2021-08-31 | 哈尔滨工程大学 | Experimental device for be used for research of underwater shear flow field electric spark bubble |
| CN114184351A (en) * | 2021-11-26 | 2022-03-15 | 哈尔滨工程大学 | Conveniently-adjusted electric spark bubble generation device |
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Application publication date: 20150722 |