CN105866126B - A kind of multiphase flow near-wall effect real-time monitoring device - Google Patents
A kind of multiphase flow near-wall effect real-time monitoring device Download PDFInfo
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- CN105866126B CN105866126B CN201610280331.4A CN201610280331A CN105866126B CN 105866126 B CN105866126 B CN 105866126B CN 201610280331 A CN201610280331 A CN 201610280331A CN 105866126 B CN105866126 B CN 105866126B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
- G01N2021/8578—Gaseous flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
- G01N2021/8592—Grain or other flowing solid samples
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of multiphase flow near-wall effect real-time monitoring devices, including abrasive Flow reserve tank, image particle observation system, observe flow passage device, pressure gauge, flowmeter, ball valve, abrasive grain mixing pump, air pump, gas nozzle, pipeline, abrasive grain mixing pump is connect by pipeline with ball valve sealing, regulation ball valve controls the rate of discharge of the abrasive grain mixing pump, pressure gauge, flowmeter exports and is observed with ball valve respectively flow passage device inlet seal by pipeline and connect, gas nozzle connects air pump outlet, pass through tracheae connecting passage observation device, runner observation device is connect by conduit with abrasive Flow reserve tank inlet seal, the outlet of abrasive Flow reserve tank is connect with abrasive grain mixing pump inlet seal, form circulation in abrasive Flow.By the kinetic characteristic and wall effect of laser emitter and CCD high speed camera shooting runner near-wall region multiphase abrasive Flow in image particle observation system, to intuitively obtain the experimental data of multiphase abrasive Flow stream wall surface cutting scheme.
Description
Technical field
The present invention relates to Ultraprecise polished manufacture fields, more specifically, more particularly to a kind of multiphase flow near-wall effect reality
When monitoring device.
Background technique
In fluid polishing field, traditional liquid is solid, although gas-liquid two-phase flow can add the effective polishing of complex-curved progress
Work, but its polishing efficiency is lower, for realizing that high-volume, large area polishing are difficult to form effective method.More
Mutually stream research process in finds, abrasive Flow under the action of certain extrinsic motivation, inside can generate bubble (cavitation cell), gas
Bubble can also be moved with the movement of fluid, when bubble contact to rigid objects, such as abrasive grain and workpiece wall surface, due to its presence
Steady potential field condition go to pot, to crumble and fall.Energy caused by bubble collapse can increase the dynamic of abrasive grain in flow field
Can, the polishing removal of the treatment of surfaces of components is acted on to increase abrasive grain, improves the efficiency of fluid polishing.Bubble how is controlled to exist
The mode that crumbles and fall of near-wall region forms the characteristics of motion of near-wall region bubble collapse principle and abrasive grain, to greatly improve fluid
The efficiency of polishing is the key that gas-liquid-solid multiphase flow research.Currently, for gas-liquid-solid multiphase abrasive Flow near-wall region kinetic characteristic
Research mainly with emulation based on, lack intuitive, the proficiency data information of authenticity.
How to further appreciate that and explore the characteristics of motion of gas-liquid-solid multiphase abrasive Flow near-wall region is a big difficulty.
In view of presently, there are some problems, design have developed a kind of multiphase flow near-wall effect real-time monitoring device.
Summary of the invention
The object of the invention is that solve the above-mentioned problems and provide one kind can probe into real time gas-liquid-solid multiphase mill
The multiphase flow near-wall effect real-time monitoring device of grain stream flow field near-wall region bubble collapse mechanism and the abrasive Flow characteristics of motion.
The present invention through the following technical solutions to achieve the above objectives: a kind of multiphase flow near-wall effect real-time monitoring device,
Including image particle observation system, pipeline, air pump, gas nozzle；And be sequentially distributed along pipeline abrasive grain mixing pump, ball valve, flow
Table, pressure gauge, observation flow passage device and abrasive Flow reserve tank；The abrasive grain mixing pump is connected by pipeline and the ball valve sealing
It connects, the rate of discharge of the abrasive grain mixing pump is controlled by adjusting the ball valve；The pressure gauge and flowmeter and setting are in institute
The seal for pipe joints connection between abrasive grain mixing pump and the observation flow passage device is stated, the gas nozzle connects the outlet of the air pump simultaneously
The observation flow passage device, the outlet of the abrasive Flow reserve tank and the inlet seal of the abrasive grain mixing pump are connected by tracheae
Connection forms circulation in abrasive Flow.
Further, the observation flow passage device includes that transparency glass plate, mouthpiece, micro-nano air plug are connected with tracheae
Part, the transparency glass plate are equipped with two panels, the groove profile runner of sealed set are equipped between two panels transparency glass plate, and mouthpiece is equipped with
Two and the entrance as the groove profile runner and the transparency glass plate are tightly connected, wherein the slot of a piece of transparency glass plate
It is provided with seven through-holes on type runner, micro-nano air plug is mounted in each through-hole, tracheae connector is mounted on the micro-nano
On rice air plug, the tracheae connector connects one end of the tracheae, and the gas in air pump passes sequentially through gas nozzle, tracheae, gas
Enter in the groove profile runner after pipe connections and micro-nano air plug.
Further, described image particle observation system include laser emitter, computer, synchronous data sampling device and
CCD high speed camera, the computer connect the synchronous data sampling device, and the synchronous data sampling device connects the CCD high
The frequency of CCD high speed camera and laser emitter described in fast camera and laser emitter and synchronously control, the laser emitter
The high intensity laser beam vertical irradiation of sending observes stream described in the camera head face of CCD high speed camera to the near wall of observation runner
The groove profile runner of road device, for acquiring the near-wall effect of abrasive Flow in coplanar laser illumination in the observation flow passage device in real time,
The image of acquisition is sent in computer after synchronous data sampling device integration and handles, and forms the multiphase mill of a circulation
Grain flows nearly wall characteristics observation system.
Further, the micron order through-hole arranged in a ring is provided in the micro-nano air plug, micron order through-hole will
The gas being passed through in groove profile runner is divided into micron order cavitation bubble.
Further, the groove profile runner is in turning one's coat Z-type, for observe multiphase abrasive Flow direct current to runner bending part
Nearly wall characteristics.
Technical concept of the invention are as follows: multiphase flow near-wall effect real-time monitoring device is by abrasive Flow reserve tank, image particle
Observation system, observation flow passage device, pressure gauge, flowmeter, ball valve, abrasive grain mixing pump, air pump, gas nozzle, pipeline composition, pass through mill
Grain mixing pump and abrasive Flow reserve tank form circulation in abrasive Flow, are advantageously implemented the long-term real-time sight to the nearly wall characteristics of multiphase flow
It surveys.The multiphase flow flow velocity in flow field is controlled by ball valve, fluid field pressure and flow velocity are gone out by pressure gauge and flowmeter real-time measurement
Equal boundary conditions are injected abrasive Flow in observation runner by pipeline, and the gas in air pump is divided by micro-nano air plug
Micron order cavitation bubble forms gas-liquid-solid multiphase abrasive Flow in the near-wall region of the groove profile runner for Z-type of turning one's coat；Laser emitter hair
High intensity laser beam out irradiates this region, and synchronous data sampling device control CCD high speed camera shoots the near-wall region gas-liquid-solid
The nearly wall characteristics such as the formation mechenism of multiphase abrasive Flow and the characteristics of motion, data obtain gas-liquid-solid multiphase through computer high speed processing
The truthful data for flowing near-wall region abrasive grain cutting mechanism becomes multiphase flow bubble collapse theory, optimizes multiphase flow polishing work
The important experimental data of skill parameter.
The beneficial effects of the present invention are: the configuration of the present invention is simple is compact, and experimental implementation is simple, is suitable for most of fluids
Polish the research of nearly wall feature；It is capable of the stream that gas-liquid-solid multiphase abrasive Flow near-wall region is observed by laboratory facilities of intuitive and convenient
Field characteristic obtains under various boundary, the kinetic characteristic in most true multinomial flow field；It and is gas-liquid-solid multiphase abrasive Flow super
Important foundation has been established in the popularization and realization of precise polished manufacture field.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of multiphase flow near-wall effect real-time monitoring device of the present invention.
Fig. 2 is the structural schematic diagram of image particle observation system of the present invention.
Fig. 3 is the diagrammatic cross-section of present invention observation flow passage device.
Fig. 4 is the rearview of present invention observation flow passage device.
In figure, 1-- abrasive Flow reserve tank, 2- image particle observation system, 3- observation flow passage device, 4- pressure gauge, 5- stream
Scale, 6- ball valve, 7- abrasive grain mixing pump, 8- air pump, 9- gas nozzle, 10- pipeline, 21- laser emitter, 22- computer, 23- number
Connect according to synchronous acquisition device, 24-CCD high speed camera, 31- transparency glass plate, 32- mouthpiece, the micro-nano air plug of 33-, 34- tracheae
Fitting.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in figures 1-4, a kind of multiphase flow near-wall effect real-time monitoring device, including image particle observation system 2, pipe
Road 10, air pump 8, gas nozzle 9；And be sequentially distributed along pipeline 10 abrasive grain mixing pump 7, ball valve 6, flowmeter 5, pressure gauge 4, observation
Flow passage device 3 and abrasive Flow reserve tank 1.
Abrasive grain mixing pump 7 is tightly connected by pipeline 10 and the ball valve 6, controls the mill by adjusting the ball valve 6
The rate of discharge of grain mixing pump 7；The pressure gauge 4 and flowmeter 5 and setting are in the abrasive grain mixing pump 7 and the observation runner
Pipeline 10 between device 3 is tightly connected, and the gas nozzle 9 connects the outlet of the air pump 8 and connects the observation by tracheae
The outlet of flow passage device, the abrasive Flow reserve tank 1 is connect with the inlet seal of the abrasive grain mixing pump 7, is formed in abrasive Flow
Circulation.
It observes flow passage device 3 and includes transparency glass plate 31, mouthpiece 32, the gentle pipe connections 34 of micro-nano air plug 33,
The transparency glass plate 31 is equipped with two panels, and the groove profile runner of sealed set, mouthpiece 32 are equipped between two panels transparency glass plate 31
If being tightly connected there are two and as the entrance of the groove profile runner with the transparency glass plate 31, wherein a piece of transparent glass
It is provided with seven through-holes on the groove profile runner of plate 31, micro-nano air plug 33 is mounted in each through-hole, tracheae connector 34 is pacified
On the micro-nano air plug 33, the tracheae connector 34 connects one end of the tracheae, and the gas in air pump 8 is successively
By entering in the groove profile runner after gas nozzle 9, tracheae, tracheae connector 34 and micro-nano air plug 33.
The micron order through-hole arranged in a ring is provided in the micro-nano air plug 33, micron order through-hole will be passed through groove profile
Gas in runner is divided into micron order cavitation bubble.
The groove profile runner is special to wall close with runner bending part in direct current for observing multiphase abrasive Flow in Z-type of turning one's coat
Property.Wherein there are two the runner bending parts that Z-type groove profile runner of turning one's coat is arranged in seven through-holes.
Image particle observation system 2 includes laser emitter 21, computer 22, synchronous data sampling device 23 and CCD high speed
Camera 24, the computer 22 connect the synchronous data sampling device 23, and the synchronous data sampling device 23 connects the CCD high
The frequency of CCD high speed camera 24 and laser emitter 21 described in fast camera 24 and laser emitter 21 and synchronously control, it is described to swash
The high intensity laser beam vertical irradiation that optical transmitting set 21 issues is to the near wall of observation runner, and the camera head of CCD high speed camera 24 is just
To the groove profile runner of the observation flow passage device 3, for acquiring in the observation flow passage device 3 abrasive grain in coplanar laser illumination in real time
The near-wall effect of stream, the image of acquisition is sent in computer 22 after the synchronous data sampling device 23 integration to be handled, shape
The nearly wall characteristics observation system of multiphase abrasive Flow recycled at one.
Above-described embodiment is presently preferred embodiments of the present invention, is not a limitation on the technical scheme of the present invention, as long as
Without the technical solution that creative work can be realized on the basis of the above embodiments, it is regarded as falling into the invention patent
Rights protection scope in.
Claims (4)
1. a kind of multiphase flow near-wall effect real-time monitoring device, it is characterised in that: including image particle observation system (2), pipeline
(10), air pump (8), gas nozzle (9)；And be sequentially distributed along pipeline (10) abrasive grain mixing pump (7), ball valve (6), flowmeter (5),
Pressure gauge (4), observation flow passage device (3) and abrasive Flow reserve tank (1)；The abrasive grain mixing pump (7) passes through pipeline (10) and institute
Ball valve (6) sealed connection is stated, the rate of discharge of the abrasive grain mixing pump (7) is controlled by adjusting the ball valve (6)；The pressure
The pipeline (10) of table (4) and flowmeter (5) and setting between the abrasive grain mixing pump (7) and observation flow passage device (3)
It is tightly connected, the gas nozzle (9) connects the outlet of the air pump (8) and connects the observation flow passage device by tracheae, described
The outlet of abrasive Flow reserve tank (1) is connect with the inlet seal of the abrasive grain mixing pump (7), forms circulation in abrasive Flow；
The observation flow passage device (3) includes that transparency glass plate (31), mouthpiece (32), micro-nano air plug (33) and tracheae connect
Fitting (34), the transparency glass plate (31) are equipped with two panels, the groove profile of sealed set are equipped between two panels transparency glass plate (31)
Runner, mouthpiece (32) set there are two and the entrance as the groove profile runner and the transparency glass plate (31) sealing connect
It connects, wherein being provided with seven through-holes on the groove profile runner of a piece of transparency glass plate (31), is mounted on micro-nano gas in each through-hole
Stopple (33), tracheae connector (34) are mounted on the micro-nano air plug (33), and the tracheae connector (34) connects institute
One end of tracheae is stated, the gas in air pump (8) passes sequentially through gas nozzle (9), tracheae, tracheae connector (34) and micro-nano air plug
(33) enter in the groove profile runner afterwards.
2. multiphase flow near-wall effect real-time monitoring device according to claim 1, it is characterised in that: described image particle is seen
Examining system (2) includes laser emitter (21), computer (22), synchronous data sampling device (23) and CCD high speed camera (24), institute
It states computer (22) and connects the synchronous data sampling device (23), the synchronous data sampling device (23) connects the CCD high speed
The frequency of CCD high speed camera (24) and laser emitter (21) described in camera (24) and laser emitter (21) and synchronously control,
Near wall of the high intensity laser beam vertical irradiation that the laser emitter (21) issues to observation runner, CCD high speed camera (24)
Camera head face described in observe the groove profile runner of flow passage device (3), it is sharp for acquiring in the observation flow passage device (3) in real time
The image of the near-wall effect of abrasive Flow in photoirradiated surface, acquisition is sent to meter after the synchronous data sampling device (23) integration
Processing in calculation machine (22), forms the nearly wall characteristics observation system of multiphase abrasive Flow of a circulation.
3. multiphase flow near-wall effect real-time monitoring device according to claim 2, it is characterised in that: the micro-nano stomata
It is provided with the micron order through-hole arranged in a ring in plug (33), the gas being passed through in groove profile runner is divided into micro- by micron order through-hole
Meter level cavitation bubble.
4. multiphase flow near-wall effect real-time monitoring device according to claim 2, it is characterised in that: the groove profile runner is in
It turns one's coat Z-type, for observing multiphase abrasive Flow in direct current to wall characteristics close with runner bending part.
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| CN201610280331.4A CN105866126B (en) | 2016-04-28 | 2016-04-28 | A kind of multiphase flow near-wall effect real-time monitoring device |
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| CN201610280331.4A CN105866126B (en) | 2016-04-28 | 2016-04-28 | A kind of multiphase flow near-wall effect real-time monitoring device |
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| CN105866126B true CN105866126B (en) | 2019-02-22 |
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| CN107561077A (en) * | 2017-09-30 | 2018-01-09 | 中交天津港航勘察设计研究院有限公司 | A kind of adjustable tilt pipe angle Solid-fluid Two-phase Flow test system |
| CN108509724B (en) * | 2018-04-03 | 2021-12-07 | 嘉兴学院 | Method for multi-scale simulation of characteristics of nanoparticle multiphase fluid |
| CN110261642B (en) * | 2019-07-09 | 2020-11-03 | 北京大学 | Three-dimensional particle image velocity measurement method suitable for gas-liquid interface |
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| CN205844205U (en) * | 2016-04-28 | 2016-12-28 | 浙江工业大学 | A kind of multiphase flow near-wall effect real-time monitoring device |
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| FR2810098B1 (en) * | 2000-06-13 | 2004-04-23 | Inst Francais Du Petrole | VISUALIZATION DEVICE ADAPTABLE TO A PIPELINE OR FLUID LOADED WITH SOLID PARTICLES |
| CN102183522B (en) * | 2011-03-04 | 2012-07-25 | 浙江工业大学 | Device for observing distribution of flexible abrasive flow and wear particle groups |
| US9395306B2 (en) * | 2011-08-05 | 2016-07-19 | Halliburton Energy Services, Inc. | Methods for monitoring fluids within or produced from a subterranean formation during acidizing operations using opticoanalytical devices |
| CN102680203A (en) * | 2012-05-09 | 2012-09-19 | 浙江大学 | Micro-channel gas-liquid two-phase flow voidage measuring device and method |
| CN102830121A (en) * | 2012-08-17 | 2012-12-19 | 浙江工业大学 | Real-time detection method of soft abrasive flow abrasive group |
| CN105784707A (en) * | 2014-12-24 | 2016-07-20 | 西安远景动力模拟技术有限公司 | Gas-liquid two-phase flow measurement method based on high-speed photography technology and device thereof |
| CN104786154B (en) * | 2015-02-03 | 2017-07-07 | 浙江工业大学 | A kind of ultrasonic cavitation bubble aids in fluid polishing processing method and device |
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