CN109282963A - Multimedium tracing method based on magnetic fluorescent particles - Google Patents
Multimedium tracing method based on magnetic fluorescent particles Download PDFInfo
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- CN109282963A CN109282963A CN201811110652.5A CN201811110652A CN109282963A CN 109282963 A CN109282963 A CN 109282963A CN 201811110652 A CN201811110652 A CN 201811110652A CN 109282963 A CN109282963 A CN 109282963A
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- fluorescent particles
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- reflected light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The invention discloses a kind of multimedium tracing method based on magnetic fluorescent particles, this method needs preparation with the magnetic fluorescent particles of two or more fluorescent materials first, then magnetic fluorescent particles are pre-filled in the premixed channel of layering, premixed channel corresponds to different fluids, enters test section jointly after magnetic fluorescent particles and fluid premix and forms flow field；Further according to the reflected light wavelength of different fluorescent particles, the filter plate that different-waveband is installed on record video camera is used to receive the reflected light of different magnetic fluorescent particles, to realize the nowed forming in heterogeneous fluid flow field and the simultaneous observation of kinetic characteristic；It is recycled using the magnetism of magnetic fluorescent particles after test.Magnetic fluorescent particles of the invention can be used for multiple times in different experiments, be greatly reduced experimental cost.
Description
Technical field
The present invention relates to a kind of magnetic fluorescent particles, and in particular to a kind of multimedium tracer side based on magnetic fluorescent particles
Method belongs to flow measurement technical field.
Background technique
In the hydromechanical important applied field such as modern Aviation, space flight, ship, submarine, flow measurement technology is flowing
It is of great significance in body experimental study.It is not straight in order to obtain flow field internal motion characteristic etc. in hydromechanical experimental study
The phenomenon that sight, PIV technology flourish and are widely used.Fortune in the available flow field of PIV technology at present
Dynamic characteristic, so that the available more information of fluid experiment, has good development prospect, to fluid Basic Experiment Study means
Play important supplementary function.The measurement of PIV stream field is by recording and analyzing the trace particle dispensed in flow field
What position was realized: the particle in laser light source irradiation flow field in PIV system, the position of matched CCD camera record trace particle
Set and pass through the poster processing soft carry out analysis can obtain the information such as local flow field structure, flow velocity.But PIV technology still has
Significant limitation only can measure the partial region of monophasic fluid by PIV technology at present, for multiphases flow fields such as ventilation cavitations
Kinetic characteristic measurement, need many experiments to complete, this makes experimental measurements lose synchronism.Since fluid properties are widely different
Different, trace particle has different motion states in gas-liquid two-phase fluid, the difference phase when CCD record is with analysis flow field state
Trace particle mutually blends in fluid, so that flow field PIV result is more chaotic, can not observe accurate flow field data.Simultaneously as
Uniform particle needed for PIV has been dispersed in working fluid, is difficult to recycle these particles after the end of the experiment, be made to working fluid
At pollution, it is unfavorable for the recycling of working fluid, also results in waste economically.Therefore, synchronous multiphase flow field PIV is seen
It surveys, and the recycling of observation particle is urgent problem to be solved in fluid experiment, with good application prospect and economic value,
To protection environment, Green experiment has great importance.
Summary of the invention
In view of this, the present invention provides a kind of multimedium tracing method based on magnetic fluorescent particles, can be realized more
The nowed forming in phase fluid flow field and the simultaneous observation of kinetic characteristic.
A kind of the step of multimedium tracing method based on magnetic fluorescent particles, this method is realized, is as follows:
Step 1: the magnetic fluorescent particles with two or more fluorescent materials are prepared；
Step 2: magnetic fluorescent particles are pre-filled in the premixed channel of layering, and premixed channel corresponds to different fluids,
Enter test section jointly after magnetic fluorescent particles and fluid premix and forms flow field；
Step 3: according to the reflected light wavelength of different fluorescent particles, the filtering of different-waveband is installed on record video camera
Piece is used to receive the reflected lights of different magnetic fluorescent particles, to realize the nowed forming and kinetic characteristic in heterogeneous fluid flow field
Simultaneous observation；
Step 4: it is recycled using the magnetism of magnetic fluorescent particles after test.
Further, the magnetic fluorescent particles are made of center magnetic core, polymer, fluorescent material and protective film, described
Polymer is connected by chemical bond with center magnetic core, the fluorescent material of the surface attachment reflection different wave length reflected light of polymer,
The outside of the polymer overall package is realized by protective film；The diameter of the magnetic fluorescent particles is determined by the length of polymer
It is fixed.
Further, the magnetic fluorescent particles diameter control is 5 μm and 50 μm, is respectively used to gas phase and liquid phase flowing.
Further, the fluorescent material is divided into three kinds, and under the irradiation of fixed wave length 532nm incident light, the first is glimmering
The reflected light of stimulative substance reflection 578nm；The reflected light of second of fluorescent material reflection 595nm；The reflection of the third fluorescent material
The reflected light of 620nm.
Further, the first described fluorescent material is phycoerythrin, second of fluorescent material is RB 200,
Three kinds of fluorescent materials are tetramethylisothiocyanate rhodamine.
The utility model has the advantages that
1, the present invention is installed on record video camera by the reflected light wavelength of fluorescent materials different on magnetic fluorescent particles
The filter plate of different-waveband is used to receive the reflected light of different fluorescent materials, realizes nowed forming and fortune to heterogeneous fluid flow field
The simultaneous observation of dynamic characteristic.
2, magnetic fluorescent particles center of the invention is magnetic core, has certain magnetism, is adsorbed after terminating test using magnet
Magnetic fluorescent particles realize the recycling and reusing of trace particle, and magnetic fluorescent particles are used for multiple times in different experiments
In, it has been greatly reduced experimental cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of magnetic fluorescent particles.
Fig. 2 is the particle mixing schematic diagram that heterogeneous fluid tests leading portion.
Wherein, the center 1- magnetic core, 2- polymer, 3- fluorescent material, 4- protective film, 5- magnetic fluorescent particles, 6- premix are logical
Road, 7- conduit.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present invention provides a kind of multimedium tracing method based on magnetic fluorescent particles, this method rely on magnetic fluorescence grain
Son is realized.
As shown in Fig. 1, magnetic fluorescent particles are made of center magnetic core 1, polymer 2, fluorescent material 3 and protective film 4, are gathered
The one end for closing object 2 is connected by the chemical bond after chemically reacting with center magnetic core 1, and the surface attachment of the polymer other end is anti-
Three kinds of fluorescent materials 3 for penetrating different wave length reflected light, under the irradiation of fixed wave length 532nm incident light, the first fluorescent material
The reflected light of phycoerythrin (R-RE) reflection 578nm；Second of fluorescent material RB 200 (RB200) reflects 595nm's
Reflected light；The reflected light of the third fluorescent material tetramethylisothiocyanate rhodamine (TRITC) reflection 620nm.
The outside of polymer 2 overall package is realized by protective film 4；The diameter of magnetic fluorescent particles 5 by polymer 2 length
It determines, 5 diameter control of magnetic fluorescent particles is 5 μm and 50 μm, is respectively used to gas phase and liquid phase flowing.
As shown in Fig. 2, during the test, first by the premixed channel 6 of the merging layering of magnetic fluorescent particles 5, this is pre-
It is three layers that mixed channel 6, which is divided, and every layer is all placed in a certain amount of magnetic fluorescent particles 5, corresponding one and stream at every layer of upstream entrance
The connected conduit 7 of body, the fluid of the conduit access of top layer is air in the embodiment, the second layer accesses kerosene, third layer connects
Enter water；5 μm of magnetic fluorescent particles 5 inject the top layer of premixed channel 6, and 50 μm of magnetic fluorescent particles 5 inject premixed channel 6
Two and three layers.After being sufficiently mixed with fluid in the test section in co-implanted downstream, three kinds of fluids are trying magnetic fluorescent particles 5
It tests in section and mixes to form heterogeneous fluid flow field.
According to the reflected light wavelength of different fluorescent particles, the filter plate of different-waveband is installed on record video camera for connecing
By the reflected light of different magnetic fluorescent particles 5, seen to realize that the nowed forming in heterogeneous fluid flow field is synchronous with kinetic characteristic
It surveys.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. the multimedium tracing method based on magnetic fluorescent particles, which is characterized in that the step of this method is realized is as follows:
Step 1: the magnetic fluorescent particles with two or more fluorescent materials are prepared；
Step 2: magnetic fluorescent particles are pre-filled in the premixed channel of layering, and premixed channel corresponds to different fluids, magnetic
Enter test section jointly after fluorescent particles and fluid premix and forms flow field；
Step 3: according to the reflected light wavelength of different fluorescent particles, the filter plate that different-waveband is installed on record video camera is used
In the reflected light for receiving different magnetic fluorescent particles, to realize that the nowed forming in heterogeneous fluid flow field is synchronous with kinetic characteristic
Observation；
Step 4: it is recycled using the magnetism of magnetic fluorescent particles after test.
2. multimedium tracing method as described in claim 1, which is characterized in that the magnetic fluorescent particles by center magnetic core,
Polymer, fluorescent material and protective film composition, the polymer are connected by chemical bond with center magnetic core, and the surface of polymer is attached
Reflection different wave length reflected light fluorescent material, overall package is realized by protective film in the outside of the polymer；The magnetism
The diameter of fluorescent particles is determined by the length of polymer.
3. multimedium tracing method as claimed in claim 1 or 2, which is characterized in that the magnetic fluorescent particles diameter control
For 5 μm and 50 μm, it is respectively used to gas phase and liquid phase flowing.
4. multimedium tracing method as described in claim 1, which is characterized in that the fluorescent material is divided into three kinds, in fixation
Under the irradiation of wavelength 532nm incident light, the first fluorescent material reflects the reflected light of 578nm；Second of fluorescent material reflection
The reflected light of 595nm；The reflected light of the third fluorescent material reflection 620nm.
5. multimedium tracing method as claimed in claim 4, which is characterized in that the first described fluorescent material is algae red egg
White, second of fluorescent material is RB 200, the third fluorescent material is tetramethylisothiocyanate rhodamine.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100612A (en) * | 2019-12-31 | 2020-05-05 | 苏州星烁纳米科技有限公司 | Oil field tracer, oil field tracing method and proppant composition |
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| CN102235976A (en) * | 2010-04-28 | 2011-11-09 | 索尼公司 | Fluorescence intensity correcting method, fluorescence intensity calculating method, and fluorescence intensity calculating apparatus |
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| US4915975A (en) * | 1987-10-07 | 1990-04-10 | Rolls-Royce Plc | Method of fluid flow visualization |
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| CN102235976A (en) * | 2010-04-28 | 2011-11-09 | 索尼公司 | Fluorescence intensity correcting method, fluorescence intensity calculating method, and fluorescence intensity calculating apparatus |
| CN102313684A (en) * | 2010-07-08 | 2012-01-11 | 中国科学院过程工程研究所 | System and method for real-time measurement of gas-solid two-phase flow field |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100612A (en) * | 2019-12-31 | 2020-05-05 | 苏州星烁纳米科技有限公司 | Oil field tracer, oil field tracing method and proppant composition |
| WO2021135996A1 (en) * | 2019-12-31 | 2021-07-08 | 苏州星烁纳米科技有限公司 | Oil field tracer, method for oil field tracing, and proppant composition |
| CN111100612B (en) * | 2019-12-31 | 2024-01-09 | 苏州星烁纳米科技有限公司 | Oilfield tracers, methods of oilfield tracing, and proppant compositions |
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