CN103115860A - System and method for observing micro-nano bubbles in porous medium - Google Patents
System and method for observing micro-nano bubbles in porous medium Download PDFInfo
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Abstract
The invention provides a system and method for observing micro-nano bubbles in a porous medium. The system comprises a model box, a laser, a camera, a lens and an image acquiring and processing module, wherein a spherical transparent resin material for simulating the porous medium is filled in the model box, the model box is provided with a water filling port for filling and containing a water body which is used for simulating underground water and is rich in micro-nano bubbles, and the surfaces of the model box are different in material and color so as to improve the imaging definition of the micro-nano bubbles in pore water of the porous medium to the maximum extent; the laser is positioned on the top of the model box and used for providing a light sheet required for observation; the camera and the lens are positioned on one side of the model box and used for observing the micro-nano bubbles in the porous medium; and the image acquiring and processing module is connected with the camera and used for acquiring and processing images. The system has the advantages of easiness, practicability, high simulation degree and high observation precision.
Description
Technical field
The invention belongs to Hydraulic and Hydro-Power Engineering and field of environmental engineering, be specifically related to micro-nano air-bubble observation system and method in a kind of porous medium.
Background technology
Underground water is the water that retains in the hole of the soil body (porous medium).Groundwater resource are important component parts of global water resources, and under the condition of China's surface water severe contamination, groundwater resource have extremely important effect for economy and social development.The many regional underground water of China suffer the pollution of toxic organics in various degree.Country " 12 " planning proposes and will " strengthen the environment protection ", solves " the outstanding environmental problem of the infringement such as soil pollution health of the masses ", " descending intentinonally water prevention and cure of pollution ".Issue " national pollution prevention plan (2011-the year two thousand twenty) " pointed out and will " tentatively be contained the quality of groundwater degradating trend " in October, 2011, " strengthen the supervision of priority industry industry groundwater environment ", " in a planned way accelerating to advance the groundwater contamination reparation ".The development and application of the polluted underground water innovation recovery technique of environmental friendliness and efficient energy-saving is the important channel of Chinese national economy and social sustainable development.
Natural Attenuation method and biological the ventilation are the routine techniquess that organic contamination underground water original position is repaired.The Natural Attenuation method is biology, chemistry and the physical process of utilizing nature to exist under suitable condition, reduces pollutant load in soil and groundwater, toxicity, movability.Place natural degradation ability relies on environmental baseline strongly, and because oxygen supply condition is relatively poor, the electron accepter of existence often can't satisfy the requirement of microbial degradation reaction, and the aerobic degradation effect is suppressed, and reaction rate is slow.The biological ventilation carried out aeration by vacuum or pressurization to contaminated soil, and the oxygen concentration in soil is increased, thereby promoted the activity of sample microorganism, improves the degradation efficiency of pollutant in soil.Yet generally with the separated foam form motion of microchannel or millimeter-centimetre-sized particle diameter, coverage is less in underground water for biological ventilation process Air, and the oxygen supply effect is relatively poor, and the aerobic degradation ability is not fully exerted, thereby repair is limited.
Micro-nano bubble refers in liquid the general designation of micron and nanometer scale bubble, and its diameter is generally less than 60 μ m, and the micron bubble diameter is between 1-60 μ m, and the diameter of nano bubble is below 1 μ m.In water body, micro-nano bubble formation technology is full-fledged at present.Millimeter-centimetre-sized macroscopic view bubble will rise rapidly under buoyancy in water body, and break at the water surface place; Because diameter is less, the residence time is longer in water body for micro-nano bubble.Therefore micro-nano bubble can be with underground water sport, and the migration coverage is much larger than common blister.Due to the effect of water air interface tension force, bubble inner pressure is larger, and its high-solvency can be the dissolved oxygen DO that water body provides high-load.Simultaneously, micro-nano bubble liquid-gas interface is electronegative, can interact with specific pollutant, and the free radical and the vibration wave that produce when micro-nano bubble breaks also can promote removal of pollutants.
Micro-nano bubble oxygen supply is effective, longer duration, coverage are large, can make up the limitation of conventional based technique for in-situ remediation, promotes microbiological deterioration, and organic contamination underground water is repaired, and has huge application prospect.Therefore probe into the movement mechanism of micro-nano bubble in porous medium and have Important Academic value and engineering practical value.But there is no relevant observational record technological means in prior art.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or provides at least a kind of useful business to select.For this reason, one object of the present invention be to propose a kind of have simple and feasible, the emulation degree is high, micro-nano air-bubble observation system in the medium of accuracy of observation much higher hole.Another object of the present invention be to propose a kind of have simple and feasible, the emulation degree is high, micro-nano air-bubble observation method in the medium of accuracy of observation much higher hole.
Micro-nano air-bubble observation system in porous medium according to the embodiment of the present invention, comprise following part: model casing, be filled with the spherical transparent resin material of simulation porous medium in described model casing, described model casing has water filling port, be used for injecting and holding the water body that is rich in micro-nano bubble of simulated groundwater, and each face of model casing uses different material and color, improves to greatest extent the imaging definition of micro-nano bubble in the porous medium pore water; Laser instrument, described laser instrument is positioned at the top of described model casing, the light source that needs when being used for providing observation; Camera and camera lens, described camera and camera lens are positioned at a side of described model casing, are used for the micro-nano bubble of observation porous medium; Picture collection and processing module, described picture collection and processing module are connected with described camera, carry out the acquisition and processing of picture.
Alternatively, also comprise: laser stent, described laser stent is used for the described laser instrument of fixed support; And three-dimensional adjustable support, described three-dimensional adjustable support is used for the described camera of fixed support and camera lens.
Alternatively, the index matching of described spherical transparent resin material and water.
Alternatively, described spherical transparent resin material mean grain size is 0.6-1.0mm, interfacial charge character and soil particle coupling.
Alternatively, described model casing is rectangular parallelepiped, definition is inspection surface near described camera and camera lens, other faces are defined as respectively background surfaces, left side wall, right side wall, bottom surface, wherein said inspection surface uses ultra-clear glasses, other face uses organic glass, and described background surfaces is smeared into black, and white is smeared in described left side wall, right side wall and bottom surface.
Alternatively, described laser instrument also comprises: laser lens, the light that described laser lens sends described laser instrument are proofreaied and correct and are sheet, and the laser linewidth of described laser instrument is less than the depth of field of described camera.
Alternatively, described camera is the CCD camera of ISO, and the illumination of described camera imaging is more than or equal to 0.00002Lux; Described camera lens is industrial Zoom lens, can be to the bubble imaging between 900 nanometers to 60 micron.
Alternatively, described picture collection and processing module adopt software, by observe bubble on porosint adsorption rate, life period and whether have definite Adsorption law such as adsorption/desorption phenomenon; Analyze by pixel size and gray-scale value to the bubble diagram picture, determine the particle diameter of bubble in image; By many images of continuous shooting, the movement velocity of different bubbles in computed image.
Micro-nano air-bubble observation method in porous medium according to the embodiment of the present invention, adopt in the porous medium that the present invention proposes micro-nano air-bubble observation system, comprise the following steps: S1. loads spherical transparent resin material in described model casing, injects the water body that is rich in micro-nano bubble; S2. adopting described laser instrument is described water body illumination, adopts the micro-nano bubble in the described porous medium pore water of described camera and camera lens observation; And S3. picture collection and processing module are controlled camera and camera lens gathers image and carries out analyzing and processing, and the characterization of adsorption, the particle diameter that obtain micro-nano bubble distribute and movement locus.
The invention provides grain diameter measurement and the motion recording geometry of micro-nano bubble in a kind of porous medium, by model casing, laser instrument, CCD camera, camera lens, three-dimensional adjustable support and image processing software realization, particle diameter, absorption and the kinetic characteristic of micro-nano bubble in porous medium are measured.In porous medium of the present invention, micro-nano air-bubble observation system and method has following advantage at least:
1, use the thought of the spherical transparent resin material simulation soil body.The refractive index of this material and water is basically identical, therefore is convenient to directly observe the adsorption effect of micro-nano bubble and this spheroidal material by optical observation system.This material mean grain size is 0.84mm, and interfacial charge character and soil particle are similar, therefore can simulate actual soil particle in nature.
2, the glass molds molding box of use particular design carries out the thought of micro-nano air-bubble observation in porous medium.The inspection surface of glass molds molding box uses the good ultra-clear glasses of light transmission to make, and makes camera imaging clear.Other all uses the organic glass material.Background surfaces is smeared into black, strengthens the contrast effect of bubble and background.Other organic glass face is all smeared into white, strengthens the diffuse effect of micro-nano bubble in the porous medium of hole, improves micro-nano bubble brightness.The selection of material and color has increased the imaging definition of micro-nano bubble to greatest extent.
3, use laser instrument that high-power sheet light source is provided, to illuminate the thought of micro-nano bubble in porous medium.Use peak power to be the LASER Light Source of the 532nm of 2W, and use eyeglass that its light is proofreaied and correct at laser exit to be sheet, to illuminate a certain plane in porous medium, concentrated laser energy and avoided the appearance of bubble ghost phenomena.In addition, control the live width of sheet laser below 1mm, make live width less than the camera depth of field, avoid the outer bubble of the camera depth of field to be illuminated to cause on the CCD camera and become the virtual image.
4, use CCD camera and the industrial Zoom lens of ISO, the thought of the bubble in porous medium being carried out imaging.Micro-nano bubble diameter is little, to the reflection of light weak effect, therefore except the brightness that improves bubble, also needs the CCD camera of high photosensitivity.Institute's use camera is minimum can carry out imaging to object when illumination 0.00002Lux.Being used in conjunction with Zoom lens can realize the bubble imaging between 900 nanometers to 60 micron.
5, use three-dimensional adjustable support to put the thought of camera.By three-dimensional adjustable support, can realize continuous, the fine adjustment to observation position, and accurate adjustment is carried out in focusing.
6, pass through the image that obtains micro-nano bubble is carried out the thought that characterization of adsorption is analyzed.By observe bubble on porosint adsorption rate, life period and whether have definite Adsorption law such as adsorption/desorption phenomenon.
7, use image processing software that bubble diagram is looked like to analyze, with the particle diameter of acquisition bubble and the thought of movement velocity.Analyze by pixel size and gray-scale value to the bubble diagram picture, can determine the particle diameter of bubble in image.By many images of continuous shooting, can computed image in the movement velocity of different bubbles.
In sum, in porous medium of the present invention micro-nano air-bubble observation system and method have simple and feasible, the advantage that the emulation degree is high, accuracy of observation is high.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic diagram of micro-nano air-bubble observation system in the porous medium of the embodiment of the present invention;
Fig. 2 is the schematic diagram of the spherical transparent resin material of a specific embodiment of the present invention;
Fig. 3 is the process flow diagram of micro-nano air-bubble observation method in the porous medium of the embodiment of the present invention;
Fig. 4 is the front schematic view of the model casing of a specific embodiment of the present invention;
Fig. 5 is the schematic perspective view of the model casing of a specific embodiment of the present invention.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, be intended to for explanation the present invention, and can not be interpreted as limitation of the present invention.
in description of the invention, it will be appreciated that, term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is separately arranged.
In the present invention, unless clear and definite regulation and restriction are separately arranged, broad understanding should be done in the terms such as term " installation ", " being connected ", " connection ", " fixing ", for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless clear and definite regulation and restriction are separately arranged, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, can comprise that also the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that the First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that the First Characteristic level height is less than Second Characteristic.
The present invention relates to a kind of system for the micro-nano air-bubble observation of porous medium, can carry out the measurement of particle diameter, absorption and kinetic characteristic to the bubble of 900 nanometers to 60 in water micron.By model casing, laser instrument, CCD camera, camera lens, three-dimensional adjustable support and image processing software realization, particle diameter, absorption and the kinetic characteristic of micro-nano bubble in porous medium are measured.This system will promote China's water pollution control for the research of the micro-nano bubble property of porous medium, for related science research provides experimental data.
As shown in Figure 1, micro-nano air-bubble observation system in porous medium according to the embodiment of the present invention, comprise following part: model casing 1, model casing 1 is filled with spherical transparent resin material (as shown in Figure 2) with simulation porous medium (being the soil body), and model casing 1 has water filling port, be used for injecting and holding the water body that is rich in micro-nano bubble of simulated groundwater, and model casing 1 different material and the colors of each face use, improve to greatest extent the imaging definition of micro-nano bubble in water body; Laser instrument 2, laser instrument 2 is positioned at the top of model casing 1, the light source that needs when being used for providing observation; Camera 4 and camera lens 5, camera 4 and camera lens 5 are positioned at a side of model casing 1, are used for the micro-nano bubble of observation porous medium; Picture collection and processing module 7, picture collection and processing module 7 are connected with camera 4, carry out the acquisition and processing of picture.
Alternatively, also comprise: laser stent 3, laser stent 3 is used for fixed support laser instrument 2; And three-dimensional adjustable support 6, three-dimensional adjustable support 6 is used for fixed support camera 4 and camera lens 5.Camera 4 and camera lens 5 are placed on three-dimensional adjustable support 6, can realize continuous, the fine adjustment to observation position and focal length.
Alternatively, the refractive index of this spherical transparent resin material and water is basically identical, is convenient to directly observe the adsorption effect of micro-nano bubble and this spheroidal material by optical observation system.This spherical transparent resin material mean grain size is 0.6-1.0mm, is preferably 0.84mm, and interfacial charge character and soil particle are similar, therefore can simulate actual soil particle in nature.
Alternatively, model casing 1 is rectangular parallelepiped, as shown in Figure 4 and Figure 5, in model casing bottom and sidewall, inlet is arranged respectively, diameter 4mm, and the position of inlet is as shown in the figure.Model casing 1 has five faces, the definition wherein near camera 4 and camera lens 5 be inspection surface 8, other faces are defined as respectively background surfaces 9, left side wall 10, right side wall 11, bottom surface 12.Wherein inspection surface 8 uses ultra-clear glasses, and other face uses organic glass.Background surfaces 9 is smeared into black, and white is smeared in left side wall 10, right side wall 11 and bottom surface 12.Background surfaces 9 is smeared into black, strengthens the contrast effect of bubble and background.Other organic glass face is all smeared into white, strengthens the diffuse effect of micro-nano bubble in porous medium, improves micro-nano bubble brightness.The material of model casing 1 and the selection of color have increased the imaging definition of micro-nano bubble in the porous medium to greatest extent.
Alternatively, laser instrument 2 also comprises: laser lens, the light that laser lens sends laser instrument 1 are proofreaied and correct and are sheet, and the laser linewidth of laser instrument 1 is less than the depth of field of camera.In one embodiment of the invention, use peak power to be the laser instrument 1 of the 532nm of 2W, and use eyeglass that its light correction is sheet at laser exit, illuminate a certain plane in water body, rather than whole water body, concentrate laser energy and avoided the appearance of bubble ghost phenomena.In addition, control the live width of sheet laser below 1mm, make live width less than the camera depth of field, avoid the outer bubble of the camera depth of field to be illuminated to cause and become the virtual image on camera.
Alternatively, camera be the CCD camera of ISO, the minimal illumination of camera imaging is less than or equal to 0.00002Lux.Use the CCD camera (but still imaging of minimal illumination 0.00002Lux) of ISO to coordinate industrial Zoom lens, to observe the bubble between 900 nanometers to 60 micron.
Picture collection and processing module 7 are generally the example, in hardware such as workstation, computer and occur, and it can use the picture of taking image processing software to carry out the computing of particle diameter, absorption and kinetic characteristic.Particularly, analyze by pixel size and gray-scale value to the bubble diagram picture, can determine the particle diameter of bubble in image.By many images of continuous shooting, can computed image in the movement velocity of different bubbles.In addition, can also by observe bubble on porosint adsorption rate, life period and whether have definite Adsorption law such as adsorption/desorption phenomenon.
As shown in Figure 3, micro-nano air-bubble observation method in porous medium according to the embodiment of the present invention, adopt in the porous medium that the present invention proposes micro-nano air-bubble observation system, comprise the following steps: S1. loads spherical transparent resin material in model casing, the water body of micro-nano bubble is rich in injection, with the underground water in the simulation soil body; S2. adopting laser instrument is the water body illumination, adopts the micro-nano bubble in camera and camera lens observation porous medium pore water; And S3. picture collection and processing module are controlled camera and camera lens gathers image and carries out analyzing and processing, and the characterization of adsorption, the particle diameter that obtain micro-nano bubble distribute and movement locus.
To sum up, in porous medium of the present invention, the core concept of micro-nano air-bubble observation system and method is: use the glass molds molding box to inject micro-nano air-bubble, wherein the inspection surface of glass molds molding box uses the good ultra-clear glasses of light transmission to make, and other all uses organic glass.Background surfaces is smeared into black, and other organic glass face is all smeared into white, strengthens the diffuse effect of micro-nano bubble in porous medium.Use laser instrument that high power sheet light source is provided, illuminate the micro-nano bubble in water body, use the CCD camera of ISO to coordinate industrial Zoom lens, to observe the bubble between 900 nanometers to 60 micron.Camera and camera lens are placed on three-dimensional adjustable support, realize the adjustment of observation position and focal length.Use image processing software to carry out the computing of particle diameter, absorption and kinetic characteristic in the picture of taking.
In porous medium of the present invention, micro-nano air-bubble observation system and method has following advantage at least:
1, use the thought of the spherical transparent resin material simulation soil body.The refractive index of this material and water is basically identical, therefore is convenient to directly observe the adsorption effect of micro-nano bubble and this spheroidal material by optical observation system.This material mean grain size is 0.84mm, and interfacial charge character and soil particle are similar, therefore can simulate actual soil particle in nature.
2, the glass molds molding box of use particular design carries out the thought of micro-nano air-bubble observation in porous medium.The inspection surface of glass molds molding box uses the good ultra-clear glasses of light transmission to make, and makes camera imaging clear.Other all uses the organic glass material.Background surfaces is smeared into black, strengthens the contrast effect of bubble and background.Other organic glass face is all smeared into white, strengthens the diffuse effect of micro-nano bubble in the porous medium of hole, improves micro-nano bubble brightness.The selection of material and color has increased the imaging definition of micro-nano bubble to greatest extent.
3, use laser instrument that high-power sheet light source is provided, to illuminate the thought of micro-nano bubble in porous medium.Use peak power to be the LASER Light Source of the 532nm of 2W, and use eyeglass that its light is proofreaied and correct at laser exit to be sheet, to illuminate a certain plane in porous medium, concentrated laser energy and avoided the appearance of bubble ghost phenomena.In addition, control the live width of sheet laser below 1mm, make live width less than the camera depth of field, avoid the outer bubble of the camera depth of field to be illuminated to cause on the CCD camera and become the virtual image.
4, use CCD camera and the industrial Zoom lens of ISO, the thought of the bubble in porous medium being carried out imaging.Micro-nano bubble diameter is little, to the reflection of light weak effect, therefore except the brightness that improves bubble, also needs the CCD camera of high photosensitivity.Institute's use camera is minimum can carry out imaging to object when illumination 0.00002Lux.Being used in conjunction with Zoom lens can realize the bubble imaging between 900 nanometers to 60 micron.
5, use three-dimensional adjustable support to put the thought of camera.By three-dimensional adjustable support, can realize continuous, the fine adjustment to observation position, and accurate adjustment is carried out in focusing.
6, pass through the image that obtains micro-nano bubble is carried out the thought that characterization of adsorption is analyzed.By observe bubble on porosint adsorption rate, life period and whether have definite Adsorption law such as adsorption/desorption phenomenon.
7, use image processing software that bubble diagram is looked like to analyze, with the particle diameter of acquisition bubble and the thought of movement velocity.Analyze by pixel size and gray-scale value to the bubble diagram picture, can determine the particle diameter of bubble in image.By many images of continuous shooting, can computed image in the movement velocity of different bubbles.
In sum, in porous medium of the present invention micro-nano air-bubble observation system and method have simple and feasible, the advantage that the emulation degree is high, accuracy of observation is high.
need to prove, describe and to be understood in process flow diagram or in this any process of otherwise describing or method, expression comprises the module of code of the executable instruction of the step that one or more is used to realize specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by opposite order, carry out function, this should be understood by the embodiments of the invention person of ordinary skill in the field.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although the above has illustrated and has described embodiments of the invention, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art is not in the situation that break away from principle of the present invention and aim can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (9)
1. micro-nano air-bubble observation system in a porous medium, is characterized in that, comprises following part:
Model casing, be filled with the spherical transparent resin material of simulation porous medium in described model casing, described model casing has water filling port, be used for injecting and holding the water body that is rich in micro-nano bubble of simulated groundwater, and each face of model casing uses different material and color, improves to greatest extent the imaging definition of micro-nano bubble in the porous medium pore water;
Laser instrument, described laser instrument is positioned at the top of described model casing, the light source that needs when being used for providing observation;
Camera and camera lens, described camera and camera lens are positioned at a side of described model casing, are used for the micro-nano bubble of observation porous medium;
Picture collection and processing module, described picture collection and processing module are connected with described camera, carry out the acquisition and processing of picture.
2. micro-nano air-bubble observation system in porous medium as claimed in claim 1, is characterized in that, also comprises:
Laser stent, described laser stent is used for the described laser instrument of fixed support; And
Three-dimensional adjustable support, described three-dimensional adjustable support is used for the described camera of fixed support and camera lens.
3. micro-nano air-bubble observation system in porous medium as claimed in claim 1, is characterized in that the index matching of described spherical transparent resin material and water.
4. micro-nano air-bubble observation system in porous medium as claimed in claim 1, is characterized in that, described spherical transparent resin material mean grain size is 0.6-1.0mm, interfacial charge character and soil particle coupling.
5. micro-nano air-bubble observation system in porous medium as claimed in claim 1, it is characterized in that, described model casing is rectangular parallelepiped, definition is inspection surface near described camera and camera lens, other faces are defined as respectively background surfaces, left side wall, right side wall, bottom surface, and wherein said inspection surface uses ultra-clear glasses, and other face uses organic glass, described background surfaces is smeared into black, and white is smeared in described left side wall, right side wall and bottom surface.
6. micro-nano air-bubble observation system in porous medium as claimed in claim 1, it is characterized in that, described laser instrument also comprises: laser lens, the light that described laser lens sends described laser instrument are proofreaied and correct and are sheet, and the laser linewidth of described laser instrument is less than the depth of field of described camera.
7. micro-nano air-bubble observation system in porous medium as claimed in claim 1, is characterized in that, described camera is the CCD camera of ISO, and the illumination of described camera imaging is more than or equal to 0.00002Lux; Described camera lens is industrial Zoom lens, can be to the bubble imaging between 900 nanometers to 60 micron.
8. micro-nano air-bubble observation system in porous medium as claimed in claim 1, it is characterized in that, described picture collection and processing module adopt software, by observe bubble on porosint adsorption rate, life period and whether have definite Adsorption law such as adsorption/desorption phenomenon; Analyze by pixel size and gray-scale value to the bubble diagram picture, determine the particle diameter of bubble in image; By many images of continuous shooting, the movement velocity of different bubbles in computed image.
9. micro-nano air-bubble observation method in a porous medium, is characterized in that, adopts as micro-nano air-bubble observation system in the described porous medium of claim 1-8 any one, comprises the following steps:
S1. the spherical transparent resin material of filling in described model casing, inject the water body that is rich in micro-nano bubble;
S2. adopting described laser instrument is described water body illumination, adopts the micro-nano bubble in the described porous medium pore water of described camera and camera lens observation; And
S3. picture collection and processing module are controlled camera and camera lens collection image and are carried out analyzing and processing, and the characterization of adsorption, the particle diameter that obtain micro-nano bubble distribute and movement locus.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572020A (en) * | 2016-01-19 | 2016-05-11 | 西南交通大学 | Nano particle counting method |
| CN107505240A (en) * | 2017-10-11 | 2017-12-22 | 华能澜沧江水电股份有限公司 | Under hypobaric in water body gas core NATURAL DISTRIBUTION observation device and method |
| CN108680477A (en) * | 2018-01-12 | 2018-10-19 | 浙江大学 | Based on laser measurement technology and the visual piping experimental rig of transparent soil and method |
| CN108984980A (en) * | 2018-09-03 | 2018-12-11 | 中建材蚌埠玻璃工业设计研究院有限公司 | The calculation method of bubble rising velocity during a kind of glass clarifying |
| CN110260945A (en) * | 2019-07-09 | 2019-09-20 | 北京大学 | Total-reflection type gas-liquid interface Method of flow visualization and gas-liquid interface location recognition method |
| CN112345412A (en) * | 2020-10-23 | 2021-02-09 | 大连理工大学 | Nano bubble diffusion coefficient in-situ measurement method |
| CN113358527A (en) * | 2021-05-31 | 2021-09-07 | 北京石油化工学院 | System and method for measuring particle size of micro-bubbles in gas-liquid two-phase flow |
| CN113884275A (en) * | 2021-09-13 | 2022-01-04 | 浙江大学 | Device and method for observing vortex structure in porous medium transition flow |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267782A (en) * | 2000-04-14 | 2000-09-27 | 石油大学(北京) | Physical logging simulator |
| CN102004070A (en) * | 2009-09-01 | 2011-04-06 | 杭州绿洁水务科技有限公司 | Detection system of particles in liquid |
| CN102109453A (en) * | 2009-12-29 | 2011-06-29 | 涂婉 | Micro-bubble property microscopic test and measurement integrated device |
| JP2011247748A (en) * | 2010-05-27 | 2011-12-08 | Nikuni Corp | Bubble observation method and device thereof |
| US8264683B2 (en) * | 2005-09-14 | 2012-09-11 | University Of Washington | Dynamic characterization of particles with flow cytometry |
| CN203231958U (en) * | 2013-02-06 | 2013-10-09 | 清华大学 | Micro-nano air bubble observation system in porous medium |
-
2013
- 2013-02-06 CN CN201310048560.XA patent/CN103115860B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267782A (en) * | 2000-04-14 | 2000-09-27 | 石油大学(北京) | Physical logging simulator |
| US8264683B2 (en) * | 2005-09-14 | 2012-09-11 | University Of Washington | Dynamic characterization of particles with flow cytometry |
| CN102004070A (en) * | 2009-09-01 | 2011-04-06 | 杭州绿洁水务科技有限公司 | Detection system of particles in liquid |
| CN102109453A (en) * | 2009-12-29 | 2011-06-29 | 涂婉 | Micro-bubble property microscopic test and measurement integrated device |
| JP2011247748A (en) * | 2010-05-27 | 2011-12-08 | Nikuni Corp | Bubble observation method and device thereof |
| CN203231958U (en) * | 2013-02-06 | 2013-10-09 | 清华大学 | Micro-nano air bubble observation system in porous medium |
Non-Patent Citations (1)
| Title |
|---|
| 段改丽: "《舰船尾流成像法检测的实验研究》", 《万方学位论文》, 6 November 2008 (2008-11-06) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572020B (en) * | 2016-01-19 | 2018-05-22 | 西南交通大学 | A kind of nano-particle method of counting |
| CN105572020A (en) * | 2016-01-19 | 2016-05-11 | 西南交通大学 | Nano particle counting method |
| CN107505240B (en) * | 2017-10-11 | 2019-10-29 | 华能澜沧江水电股份有限公司 | Under hypobaric in water body gas core NATURAL DISTRIBUTION observation device and method |
| CN107505240A (en) * | 2017-10-11 | 2017-12-22 | 华能澜沧江水电股份有限公司 | Under hypobaric in water body gas core NATURAL DISTRIBUTION observation device and method |
| CN108680477A (en) * | 2018-01-12 | 2018-10-19 | 浙江大学 | Based on laser measurement technology and the visual piping experimental rig of transparent soil and method |
| CN108680477B (en) * | 2018-01-12 | 2024-04-12 | 浙江大学 | Piping test device and method based on laser test technology and transparent soil visualization |
| CN108984980A (en) * | 2018-09-03 | 2018-12-11 | 中建材蚌埠玻璃工业设计研究院有限公司 | The calculation method of bubble rising velocity during a kind of glass clarifying |
| CN110260945A (en) * | 2019-07-09 | 2019-09-20 | 北京大学 | Total-reflection type gas-liquid interface Method of flow visualization and gas-liquid interface location recognition method |
| CN110260945B (en) * | 2019-07-09 | 2020-11-03 | 北京大学 | Total reflection type gas-liquid interface flow display method and gas-liquid interface position identification method |
| CN112345412A (en) * | 2020-10-23 | 2021-02-09 | 大连理工大学 | Nano bubble diffusion coefficient in-situ measurement method |
| CN113358527A (en) * | 2021-05-31 | 2021-09-07 | 北京石油化工学院 | System and method for measuring particle size of micro-bubbles in gas-liquid two-phase flow |
| CN113884275A (en) * | 2021-09-13 | 2022-01-04 | 浙江大学 | Device and method for observing vortex structure in porous medium transition flow |
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