CN110553952A - Free liquid drop multi-parameter measuring device and method based on rainbow imaging principle - Google Patents
Free liquid drop multi-parameter measuring device and method based on rainbow imaging principle Download PDFInfo
- Publication number
- CN110553952A CN110553952A CN201910971611.3A CN201910971611A CN110553952A CN 110553952 A CN110553952 A CN 110553952A CN 201910971611 A CN201910971611 A CN 201910971611A CN 110553952 A CN110553952 A CN 110553952A
- Authority
- CN
- China
- Prior art keywords
- light source
- free
- liquid drop
- test cavity
- rainbow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 232
- 238000003384 imaging method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 164
- 238000010438 heat treatment Methods 0.000 claims abstract description 102
- 230000003287 optical effect Effects 0.000 claims abstract description 62
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000005070 sampling Methods 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 48
- 238000011049 filling Methods 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 description 5
- 230000001427 coherent effect Effects 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005305 interferometry Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/006—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of the effect of a material on microwaves or longer electromagnetic waves, e.g. measuring temperature via microwaves emitted by the object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Electromagnetism (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a free liquid drop multi-parameter measuring device and method based on a rainbow imaging principle. The measuring device comprises a testing cavity, a heating system, a liquid drop sampling system, an air inlet and exhaust system, a signal acquisition system and a computer control system; the signal acquisition system comprises a light source incidence system, two camera shooting systems and a photoelectric sensor detection system. The measuring device utilizes the transverse long and narrow windows arranged on the side surface of the testing cavity and the side surface of the heating device, so that the camera shooting system can capture optical signals in all directions around the liquid drop to fully acquire interference fringe information and rainbow fringe information generated after a light source passes through the liquid drop, and the measurement of multiple parameters of the free liquid drop in a high-temperature and high-pressure environment based on the rainbow imaging principle is realized.
Description
Technical Field
The invention belongs to the fields of energy, power engineering, chemical engineering and materials, and particularly relates to a free liquid drop multi-parameter measuring device and method based on a rainbow imaging principle; and more particularly, to a device and a method for measuring free liquid drop multi-parameters in a high-temperature and high-pressure environment based on a rainbow imaging principle.
Technical Field
At present, the spraying technology is widely applied to a series of industrial fields, and particularly the spraying technology in high-temperature and high-pressure environments becomes a key technology in the fields of engines, drying, thermal decomposition of synthetic materials and the like. By introducing fluid such as liquid fuel, solution, suspension, emulsion and the like into the atomization device and utilizing a series of atomization methods such as pressure atomization, pneumatic atomization, ultrasonic atomization and the like, the separation of continuous fluid can be realized, and spray consisting of a plurality of micro liquid drops is formed, so that the requirement of industrial application is met. At present, the development of the spraying technology needs to carry out deep research on the evaporation, heat transfer and mass transfer processes of liquid drops in a high-temperature and high-pressure environment, and multi-parameter information such as the size, the temperature and the concentration of the liquid drops is required to be obtained. Existing droplet preparation methods include the hanging method and the free droplet method. The suspension method uses solid supports such as metal wires and cross-shaped supports to suspend liquid drops in an experimental device for measurement. Depending on the solid support, the suspension method cannot avoid the influence of the liquid-solid heat transfer problem, and also brings about changes and limitations to the liquid drop shape. The free droplet method generates droplets by using a droplet generating device, gives an initial velocity of movement to the droplets, forms free droplets in space, and performs measurement. However, free droplet methods are often applied in open space due to the large field of view required.
Existing measurement methods include direct imaging, scattering, interferometry, and extinction methods. The rainbow imaging method involves scattering and interference of light, and obtains information such as a droplet size and a refractive index by using rainbow fringes formed by light passing through droplets and being refracted and then interfering with each other. Through the fitting analysis of rainbow stripes at different angles, parameters such as the size, the temperature, the concentration and the like of the liquid drop can be finally given by the rainbow imaging method, so that the method has the advantage of being capable of measuring various parameters compared with other liquid drop measuring methods. However, the rainbow imaging method requires a detection device such as a CCD camera to be used in a wide field of view, and the pressure vessel and the heating device used in the conventional optical measurement of droplets in a high-temperature and high-pressure environment rely on a narrow optical window. The application of the rainbow imaging method focuses on the open space condition of normal temperature and normal pressure environment for a long time, and at present, the research of rainbow imaging measurement in high-temperature and high-pressure environment is not carried out, and related devices and platforms are not provided.
How to measure multiple parameters of free liquid drops by utilizing the rainbow imaging principle in a high-temperature and high-pressure environment is an unsolved problem in the field.
disclosure of Invention
the invention aims to provide a device and a method for measuring multiple parameters of free liquid drops by utilizing a rainbow imaging principle in a high-temperature and high-pressure environment, so as to solve the technical and scientific problems in the field of high-temperature and high-pressure spraying.
The invention provides a free liquid drop multi-parameter measuring device based on a rainbow imaging principle, which comprises a testing cavity, a heating system, a liquid drop sampling system, an air inlet and exhaust system, a signal acquisition system and a computer control system, wherein the testing cavity is provided with a plurality of liquid drop sampling channels; wherein,
The test cavity is a closed cavity; four first transverse long and narrow windows are arranged on the side surface of the test cavity; the first transverse long and narrow window is used for transmitting light; a guide rail is arranged between the upper end surface and the lower end surface of the test cavity;
The heating system comprises a heating device; the heating device is positioned in the testing cavity and is fixed on the guide rail between the upper end surface and the lower end surface of the testing cavity; the heating device is a perforated cavity; four second transverse long and narrow windows are arranged on the side surface of the heating device; the second transverse long and narrow window is used for transmitting light; the positions of the four second transverse long and narrow viewing windows correspond to the positions of the four first transverse long and narrow viewing windows one by one; the upper end surface and the lower end surface of the heating device are respectively provided with a small hole so as to facilitate the liquid drops to enter and exit the heating device;
The liquid drop sampling system is positioned right below or above the heating device; the liquid drop sample injection system comprises a liquid drop sample injector and a liquid drop generator; the liquid drop injector is connected with the liquid drop generator through a liquid injection passage; the liquid drop sample injector is positioned outside the test cavity and is responsible for filling liquid into the liquid drop generator through the liquid sample injection passage; the droplet generator is positioned outside the heating device; the position of a liquid drop outlet of the liquid drop generator corresponds to the position of a small hole arranged on the heating device, and the liquid drop generator is responsible for generating liquid drops from liquid filled in the liquid drop injector and providing certain initial speed for the generated liquid drops so that the liquid drops can enter the heating device through the small hole;
The air intake and exhaust system comprises an exhaust system, an air intake system and a pressure detection system; the exhaust system, the air inlet system and the pressure detection system are all positioned outside the test cavity and are respectively connected with the test cavity;
the signal acquisition system comprises a light source incidence system, two camera shooting systems and a photoelectric sensor detection system; the light source incidence system, the camera shooting system and the photoelectric sensor detection system are all positioned outside the test cavity and are correspondingly arranged on two or more windows in the first transverse long and narrow window; the incident path of the light source in the light source incident system corresponds to the detection path of the photoelectric sensor detection system and is in a straight line with the position of the liquid drop; the distribution of the two camera photographing systems is set such that an angle between a photographing path of one of the camera photographing systems and an incident path of the light source is between 1 and 89 degrees and an angle between a photographing path of the other camera photographing system and an incident path of the light source is between 91 and 179 degrees; the camera shooting system and the photoelectric sensor detection system are used for acquiring optical signal information generated by a light source through free liquid drops in the test cavity;
And the computer control system is used for controlling the operation of each system in the measuring device, converting the optical signal information acquired by the signal acquisition system into multi-parameter information of the liquid drops and outputting the multi-parameter information.
In one embodiment, the multi-parameter information of the droplet includes a motion parameter of the droplet or a size, a temperature, a concentration, and the like of the droplet.
In one embodiment, the optical signal information generated by the light source through the free liquid droplets in the test cavity includes optical signal information generated by the light source through one or more of scattering, transmission, refraction, diffraction, interference and the like of the free liquid droplets in the test cavity.
In one embodiment, the camera shooting system is used for acquiring optical signal information generated by a light source passing through free liquid drops in the test cavity; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises interference fringe information and rainbow fringe information generated by the light source through the free liquid drops in the test cavity.
In one embodiment, one of the camera shooting systems is used for acquiring optical signal information generated by a light source passing through a free liquid drop in the test cavity; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises interference fringe information generated by the light source through the free liquid drops in the test cavity; the other camera shooting system is used for acquiring optical signal information generated by the light source through the free liquid drops in the test cavity; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises rainbow stripe information generated by the light source through the free liquid drops in the test cavity.
In one embodiment, the interference fringe information generated by the light source passing through the free liquid droplet in the test chamber is converted into the size of the liquid droplet by the computer control system.
In one embodiment, rainbow fringe information generated by the light source passing through the free liquid droplets in the test chamber is converted into parameters such as temperature and concentration of the liquid droplets through a computer control system.
In one embodiment, the testing chamber is a square body having an upper end surface, a lower end surface and four side surfaces.
In an embodiment, the testing chamber is a square, and the four first transverse long and narrow windows are respectively disposed on four side surfaces of the testing chamber.
In one embodiment, the heating device is a square body having an upper end surface, a lower end surface and four side surfaces.
In one embodiment, the heating device is a square body, and the four second transverse long and narrow windows are respectively arranged on four side surfaces of the heating device.
In one embodiment, the first transverse long and narrow window arranged on the side surface of the test cavity is fixed with the test cavity through a flange.
in one embodiment, the second transverse long and narrow window arranged on the side surface of the heating device is fixed with the test cavity through a flange.
In one embodiment, the four first transverse long and narrow windows are arranged on the same horizontal plane of the side surface of the test cavity.
In one embodiment, the four second transverse long and narrow windows are arranged on the same horizontal plane of the side surface of the heating device.
In one embodiment, the aspect ratio of the first transverse elongated window is greater than 5.
In one embodiment, the aspect ratio of the second transverse elongated window is greater than 5.
In one embodiment, the heating system comprises a heating device and a temperature control device; the temperature control device is located outside the testing cavity and connected with the heating device.
In one embodiment, the heating device is an electric heating device.
In one embodiment, the heating device comprises a heating wire and a heating furnace.
In one embodiment, the temperature control device is used for controlling the temperature of the heating device.
In one embodiment, the heating device and the temperature control device are connected with a thermocouple through a temperature signal line.
In one embodiment, the heating system further comprises a heating power supply.
In one embodiment, the droplet sampling system is fixed on the upper end surface or the lower end surface of the test cavity.
In one embodiment, the droplet sampling system is positioned right below the heating device; and the liquid drop sampling system is fixed on the lower end face of the testing cavity.
In one embodiment, the droplet sampling system is positioned right above the heating device; and the liquid drop sampling system is fixed on the upper end face of the testing cavity.
in one embodiment, the droplet sampling system is fixed to the lower end surface of the test chamber through a flange.
In one embodiment, the droplet sampling system is fixed on the upper end surface of the test cavity through a flange.
In one embodiment, a lifting rod is further arranged between the liquid drop injector and the liquid drop generator.
In one embodiment, the exhaust system is configured to evacuate gas from the test chamber.
In one embodiment, the exhaust system comprises an exhaust and a second gas line; and the exhaust device is connected with the test cavity through a second gas pipeline.
in one embodiment, a second gas valve is disposed on the second gas pipeline.
In one embodiment, the exhaust device is a vacuum pump.
In one embodiment, the air intake system comprises an air intake device and a first gas pipeline; the gas inlet device is connected with the testing cavity through a first gas pipeline.
in one embodiment, a first gas valve is disposed on the first gas pipeline.
In one embodiment, the gas inlet device is used for filling gas into the test cavity.
In one embodiment, the gas inlet device is a high-pressure gas cylinder.
In one embodiment, the pressure detection system comprises a pressure detection device and a pressure signal line; the pressure detection device is connected with the test cavity through a pressure signal line.
In one embodiment, the pressure detection device is used for detecting the gas pressure inside the test chamber and determining whether to fill the test chamber with gas.
In an embodiment, the light source incidence system and the photoelectric sensor detection system are respectively disposed in two opposite windows of the first transverse long and narrow window.
In one embodiment, the two camera shooting systems are distributed so that an angle between a shooting path of one camera shooting system and an incident path of the light source and an angle between a shooting path of the other camera shooting system and the incident path of the light source can be adjusted in the measurement process, so that the two camera shooting systems can maximally acquire the information of the light signal generated by the light source through the free liquid drops in the test cavity.
in one embodiment, the light source incidence system includes a coherent light source and an optical assembly.
In one embodiment, the coherent light source and the optical assembly are connected by an optical signal line.
In one embodiment, the light source incidence system is used for providing a light source.
in one embodiment, the photosensor detection system is used to monitor movement information of free droplets within the heating device.
In one embodiment, the computer control system is further configured to control the droplet generator to provide parameters such as an initial temperature and/or an initial velocity for the generated droplets.
The second aspect of the invention provides a free liquid drop multi-parameter measuring method based on the rainbow imaging principle, which utilizes the free liquid drop multi-parameter measuring device based on the rainbow imaging principle of the first aspect of the invention; and the method comprises the steps of:
Step 1: turning on power supplies of the heating system, the liquid drop sampling system, the air inlet and exhaust system, the signal acquisition system and the computer control system;
step 2: starting a temperature control device, and heating the heating device to a specified temperature;
and step 3: opening an exhaust system, pumping gas in the test cavity to vacuum, and closing the exhaust system; then opening an air inlet system, and filling air into the test cavity to a specified pressure;
And 4, step 4: starting the liquid drop injector, and filling liquid into the liquid drop generator through the liquid drop injector; then a string of free liquid drops is generated by a liquid drop generator; providing initial speed for the generated free liquid drops through a computer control system, and enabling the free liquid drops to enter the heating device through the small holes in the heating device; recording the initial speed data in a computer control system;
And 5: starting a light source incidence system to provide a light source for the test cavity; starting a photoelectric sensor detection system, controlling the photoelectric sensor detection system through a computer control system to acquire optical signal information generated by a light source through free liquid drops in a test cavity, converting the optical signal information into motion information of the free liquid drops through the computer control system, determining the free liquid drops suitable for measurement, and recording the motion information data of the free liquid drops in the computer control system;
step 6: starting two camera shooting systems; controlling a camera shooting system to acquire optical signal information generated by a light source through free liquid drops in a test cavity through a computer control system; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises interference fringe information generated by the light source through the free liquid drops in the test cavity; controlling another camera shooting system to acquire optical signal information generated by the light source through the free liquid drops in the test cavity; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises rainbow stripe information generated by the light source through the free liquid drops in the test cavity; converting the interference fringe information and the rainbow fringe information into multi-parameter data of the liquid drop through a computer control system, thereby realizing multi-parameter measurement of the free liquid drop; and recording multi-parameter data of the free liquid drops in a computer control system;
And 7: after all experiments are finished, the temperature control device and the air inlet system are closed; starting an exhaust system, and vacuumizing the test cavity; then closing the exhaust system, opening the air inlet system, and closing the air inlet system after filling inert gas into the test cavity;
And 8: and outputting each data, and closing the power supplies of the heating system, the liquid drop sampling system, the air inlet and exhaust system, the signal acquisition system and the computer control system.
in one embodiment, after the measurement in step 6 is finished, the steps 2-6 are repeated, and the multi-parameter data of the free liquid drops in the test cavity under different temperature and pressure conditions are measured.
in an embodiment, in step 4, the following steps may be further included: starting the liquid drop injector, and filling liquid into the liquid drop generator through the liquid drop injector; then a string of free liquid drops is generated by a liquid drop generator; and providing initial speed and initial temperature for the generated free liquid drops through a computer control system, enabling the free liquid drops to enter the heating device through the small holes on the heating device, and recording the initial speed and initial temperature data in the computer control system.
In one embodiment, in step 6, the interference fringe information is converted into the size of the droplet by a computer control system.
In one embodiment, in step 6, the rainbow stripe information is converted into parameters such as temperature and concentration of the liquid droplets by a computer control system.
The advantages of the invention mainly include:
The invention provides a device and a method for measuring multiple parameters of free liquid drops by utilizing a rainbow imaging principle in a high-temperature high-pressure environment, and solves the technical and scientific problems in the field of high-temperature high-pressure spraying.
The measuring device provided by the invention has the advantages that the transverse long and narrow windows arranged on the side surface of the testing cavity and the side surface of the heating device are utilized, so that the camera shooting system can capture optical signals in all directions around the liquid drop to fully acquire interference fringe information and rainbow fringe information generated after an incident light source passes through the liquid drop, and the multi-parameter measurement of the free liquid drop under the high-temperature and high-pressure environment based on the rainbow imaging principle is realized.
It is to be understood that within the scope of the present invention, the above-described features of the present invention and those specifically described below (e.g., in the examples) may be combined with each other to form new or preferred embodiments. Not to be reiterated herein, but to the extent of space.
drawings
FIG. 1 is a schematic view of a preferred apparatus of the present invention.
FIG. 2 is a schematic top view of the distribution of the incident path of the light source in the light source camera system, the detection path of the photosensor detection system, and the camera system in a preferred embodiment of the present invention.
Description of reference numerals:
1: a test chamber; 121. 122, 123, 124: a first transverse elongate viewing window;
21: an air intake device; 211: a first gas line; 212: a first gas valve;
22: an exhaust device; 221: a second gas line; 222: a second gas valve;
23: a pressure detection device; 231: a pressure signal line;
41: a heating device; 42: a temperature control device; 43: a temperature signal line; 441. 442: a second transverse elongate viewing window; 45: a small hole;
51: a liquid drop injector; 511: a liquid sample introduction pipeline; 52: a droplet generator; 53: a lifting rod;
61: a coherent light source; 611: an optical component; 621: a first order signal camera; 622: a second order signal camera; 63: a photodiode; 64: an optical signal line;
7: a computer control system; 71: and a control signal line.
Detailed Description
the inventor finds that the premise of realizing rainbow imaging measurement in a high-temperature and high-pressure environment is to solve the problem of a large field range required by rainbow imaging based on a great amount of principle thinking and technical research, and in the existing liquid drop research, a high-temperature and high-pressure device generally utilizes a circular flange or an opening to provide a narrow optical window, so that although the problems of pressure resistance and heat resistance under high pressure are solved, a limited visual angle can be reserved for a signal acquisition system, and the application of a measurement method requiring a large field range, such as a rainbow imaging method, is limited.
after intensive research and practice, the inventor provides a free liquid drop multi-parameter measuring device and a method, and realizes measurement of multi-parameters (such as size, temperature, concentration and other parameters) of free liquid drops under high-temperature and high-pressure environment based on the rainbow imaging principle.
in the invention, the high-temperature environment refers to an environment with the temperature higher than 500K.
In the present invention, the high pressure environment refers to an environment with a pressure higher than 2 atmospheres.
In the present invention, the term "free liquid droplet" refers to a liquid droplet which can move freely in the cavity, and the liquid droplet is not suspended on any supporting member.
In the invention, the "interference fringe information" can refer to optical signal information generated after a light source scatters through free liquid drops in a test cavity.
In the invention, the rainbow fringe information can refer to optical signal information generated after a light source passes through the secondary refraction of free liquid drops in the test cavity.
In the present invention, the "first transverse elongated window" or "second transverse elongated window" refers to a window having a length to width ratio exceeding 5.
The apparatus and method of the present invention will be further described with reference to the accompanying drawings. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
For the purposes of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail herein to avoid unnecessarily obscuring the description of the embodiments.
unless otherwise indicated, the terms "include" and variations thereof, such as "comprises" and "comprising," are to be understood in an open, inclusive sense, i.e., to be construed as "including, but not limited to.
Reference herein to "one embodiment" or "another embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in another embodiment" in this document are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the content clearly dictates otherwise.
The invention relates to a free liquid drop multi-parameter measuring device based on a rainbow imaging principle, which comprises a testing cavity 1, a heating system, a liquid drop sampling system, an air inlet and exhaust system, a signal acquisition system and a computer control system 7. Each system will now be described in detail with reference to fig. 1 and 2.
The test cavity 1 is a closed cavity. The test cavity 1 can resist high pressure and high temperature. The test chamber 1 may be made of stainless steel.
Four first transverse elongated windows 121, 122, 123, 124 are arranged on the side of the test chamber 1 (e.g. in the same horizontal plane, such as in the center position in the vertical direction). The first transverse elongated viewing windows 121, 122, 123, 124 are flange-mounted to the sides of the test chamber. The first lateral elongated windows 121, 122, 123, 124 are used for transmitting light to enable free-drop multiparameter measurement based on the rainbow imaging principle.
The first transverse long and narrow windows 121, 122, 123, 124 are all designed by adopting an original double-sided protection self-sealing design so as to realize pressure resistance and sealing under a high-pressure condition.
of the four first transverse elongated windows 121, 122, 123, 124, one window (e.g., the first transverse elongated window 121) serves as a light source incident window, and a light source incident system is installed outside the light source incident window for an incident light source (e.g., laser light) to pass through the window and enter the test chamber 1. A window (e.g., the first transverse long and narrow window 122) opposite to the window is used as a photoelectric sensor detection window, and a photoelectric sensor detection system (e.g., the photodiode 63) is installed outside the photoelectric sensor detection window and is used for acquiring optical signal information generated by the light source through the free liquid drops in the test cavity 1 (e.g., optical signal information generated by the light source through transmission, scattering and other phenomena of the free liquid drops in the test cavity 1, such as light brightness and darkness and other information), so as to acquire motion information of the free liquid drops passing through an optical field, such as a frequency of passing the liquid drops, a time difference between two liquid drops in front and at back, a speed of the liquid drops, and the like.
Any two of the four first transverse elongated viewing windows 121, 122, 123, 124 can be used as camera shooting windows respectively. When any two windows are taken as camera shooting windows, cameras for acquiring optical signal information generated by a light source through free liquid drops in the test cavity 1 are respectively installed outside the two camera shooting windows; for example, a camera for obtaining interference fringe information generated by the light source passing through the free liquid droplets in the test chamber 1 is installed outside the window, such as the first-order signal camera 621; and a camera for acquiring rainbow fringe information generated by the light source through free liquid drops in the test cavity 1, such as a second-order signal camera 622, is arranged outside the other window.
preferably, the central position of the light source incidence window and the central position of the photosensor detection window are opposite and the central positions of the two are in line with the center of the test cavity 1.
And the flange on the upper end surface or the lower end surface of the test cavity 1 is used for connecting a liquid drop sampling system. The installation of the liquid drop sampling system can supplement liquid drops into the cavity under the condition that the test cavity 1 is not disassembled so as to improve the experimental efficiency.
And a guide rail is arranged between the upper end surface and the lower end surface of the test cavity 1 and is used for fixedly or non-fixedly installing a heating device 41 in a heating system.
In one embodiment, the main structure of the testing chamber 1 is a square, such as a rectangular parallelepiped or a square.
In an embodiment, the main structure of the testing chamber 1 may also be a cylinder.
In one embodiment, the test chamber 1 has six faces, including an upper face, a lower face, and four side faces.
The heating system comprises a heating device 41. The heating device 41 is located inside the testing cavity 1 and fixed on the guide rail between the upper end face and the lower end face of the testing cavity 1. The heating device 41 is used for forming a high-temperature environment in the test chamber 1. Four second transverse elongated windows (windows 441, 442, the remaining two windows not being shown) are also provided on the side of the heating device 41 (for example, on the same horizontal plane, such as the center position in the vertical direction); the positions of the four second transverse long and narrow viewing windows on the heating device 41 correspond to the positions of the four first transverse long and narrow viewing windows on the testing cavity 1 one by one, so that accurate light transmission and uniform temperature fields are ensured, and free liquid drop multi-parameter measurement based on a rainbow imaging principle is realized. The heating device 41 is an open cavity. The upper end face and the lower end face of the heating device 41 are both provided with small holes 45, and the diameter of each small hole 45 is larger than that of each liquid drop so as to facilitate the free liquid drops to enter and exit. Preferably, the small holes 45 are arranged in the center positions of the upper end surface and the lower end surface.
The heating device 41 includes a heating wire (not shown) and a heating furnace. The heating furnace is made of ceramic plates and refractory bricks. The heating furnace is wound with an electric heating wire and is heated by the electric heating wire.
in one embodiment, the main body of the heating device 41 is a square, such as a rectangular parallelepiped or a square.
In an embodiment, the main structure of the heating device 41 may also be a cylinder.
The heating system further comprises a temperature control device 42 (or referred to as a temperature controller). The temperature control device 42 is located outside the testing chamber 1 and is connected to the heating device 41 through a thermocouple (not shown) and a temperature signal line 43. The temperature control device 42 is used for controlling the temperature of the heating device 41.
The heating system also includes a heating power supply (not shown).
The heating device 41 is dimensioned such that the inner space of the heating device 41 is large enough to maximize the measurement space.
The droplet sampling system is located right below or above the heating device 41. The liquid drop sampling system can be fixed on the upper end surface or the lower end surface of the testing cavity 1. The droplet injection system comprises a droplet injector 51 and a droplet generator 52. The droplet injector 51 is located outside the testing chamber 1 and is responsible for filling the droplet generator 52 with liquid through the liquid injection line 511. The drop generator 52 is located outside the heating device 41 (preferably inside the test chamber). The droplet generator 52 has a droplet outlet position corresponding to the position of the small hole 45 provided in the heating device 41, and is responsible for generating the liquid droplets from the liquid filled in the droplet injector 51 by using the vibration principle and providing a certain initial velocity to the generated liquid droplets so that the liquid droplets can enter the heating device 41.
In one embodiment, when the droplet sampling system is located right below the heating system, the flange on the lower end surface of the testing chamber 1 is used for fixing the droplet sampling system.
In one embodiment, when the droplet sampling system is located right above the heating system, the flange on the upper end surface of the testing chamber 1 is used for fixing the droplet sampling system.
a lifting rod 53 is further provided between the droplet injector 51 and the droplet generator 52. The lifting rod 53 is used for adjusting the height of the generated liquid drop so as to obtain the liquid drop suitable for measurement.
The air intake and exhaust system comprises an exhaust system, an air intake system and a pressure detection system. And the air intake and exhaust system is used for filling fresh gas and pumping out waste gas after an experiment. The exhaust system, the air inlet system and the pressure detection system are positioned outside the test cavity 1; and are respectively connected with the test cavity 1.
The exhaust system is connected with the test chamber 1. The exhaust system includes an exhaust 22 (e.g., a vacuum pump) and a second gas line 221. The exhaust system is used for pumping out gas (such as waste gas after reaction) in the test cavity 1. The exhaust device 22 is connected to the test chamber 1 through a second gas line 221. A second gas valve 222 is disposed on the second gas pipeline 221.
In one embodiment, the exhaust gas from the test chamber 1 may be pumped out by a vacuum pump to prevent residual gas from interfering with the measurement.
The pressure detection system is connected with the test cavity 1. The pressure detection system comprises a pressure detection device 23 (or called as a pressure gauge) and a pressure signal line 231; the pressure detection device 23 is connected with the test chamber 1 through a pressure signal line 231. The pressure control device is used for detecting the pressure in the testing cavity 1 and determining whether gas needs to be filled into the testing cavity 1.
The air inlet system is connected with the testing cavity 1. The gas inlet system includes a gas inlet device 21 (e.g., a high pressure gas cylinder) and a first gas line 211. The gas inlet device 21 is connected with the test chamber 1 through a first gas pipeline 211. A first gas valve 212 is disposed on the first gas pipeline 211. The gas inlet means 21 is used to introduce a gas (e.g. fresh inert gas or air) into the test chamber 1.
The signal acquisition system comprises a light source incidence system, two camera shooting systems and a photoelectric sensor detection system. The various systems or components in the signal acquisition system are connected by optical signal lines 64.
The light source incidence system, the shooting system and the photoelectric sensor detection system are all located outside the testing cavity 1.
The incident path of the light source in the light source incident system corresponds to the detection path of the photoelectric sensor detection system and is in a straight line with the position of the liquid drop.
The light source incidence system and the photoelectric sensor detection system are respectively and correspondingly arranged on two opposite windows of the first transverse long and narrow windows 121, 122, 123 and 124. Such as a first transverse elongate viewing window 121 and a first transverse elongate viewing window 122 (as shown, for example, in fig. 2); or a first lateral elongated viewing window 123 and a first lateral elongated viewing window 124.
The light source incidence system is arranged at the light source incidence window. The light source entry system includes a light source (e.g., coherent light source 61) and an optical assembly 611. The coherent light source 61 and the optical component 611 are connected by an optical signal line 64.
the photosensor detection system is arranged at the photosensor detection window for monitoring movement information of the free droplet within the heating device 41, such as the time interval between two droplets and the velocity of the droplet.
It should be noted that the two camera shooting systems are distributed so that the angle between the shooting path of one camera shooting system and the incident path of the light source and the angle between the shooting path of the other camera shooting system and the incident path of the light source can be adjusted in the measurement process, so that the two camera shooting systems can maximally acquire the optical signal information generated by the light source through the free liquid drops in the test cavity 1.
in one embodiment, the two camera capture systems are distributed such that the angle between the capture path of one camera capture system (e.g., second order signal camera 622) and the incident path of the light source is between 1 and 89 degrees and the angle between the capture path of the other camera capture system (e.g., first order signal camera 621) and the incident path of the light source is between 91 and 179 degrees.
the two camera shooting systems can be respectively arranged at any two windows. For example, one camera shooting system is arranged at the light source entrance window, and the other camera shooting system is arranged at the photosensor detection window. For another example, one camera photographing system is disposed at the light source entrance window, and the other camera photographing system is disposed at any one of the viewing windows other than the light source entrance window and the photosensor detection window. For another example, one camera photographing system is disposed at the photosensor detection window, and the other camera photographing system is disposed at any one of the viewing windows other than the light source incidence window and the photosensor detection window. For another example, two camera shooting systems are respectively arranged at two viewing windows outside the light source incidence window and the photosensor detection window (for example, as shown in fig. 2).
The two camera shooting systems are used for acquiring optical signal information generated by the light source through free liquid drops in the test cavity 1. The system comprises a test cavity 1, a camera shooting system, a detection system and a control system, wherein the camera shooting system is used for acquiring interference fringe information generated by a light source passing through free liquid drops in the test cavity 1; another camera captures rainbow fringe information generated by the light source passing through the free liquid droplets in the test chamber 1. The camera shooting system is a high-speed CCD camera.
it should be noted that after the two camera shooting systems are arranged outside the shooting window, the shooting angles of the camera shooting systems can be adjusted, so that the two camera shooting systems can maximally acquire the optical signal information generated by the light source passing through the free liquid drops in the test cavity 1.
and the computer control system 7 is used for controlling the operation of each system in the measuring device, converting the optical signal information acquired by the signal acquisition system into multi-parameter information of the liquid drops and outputting the multi-parameter information.
The computer control system 7 is also arranged to control the droplet generator to provide parameters such as initial temperature and/or initial velocity for the droplets generated.
The computer control system 7 is connected to the various systems via control signal lines 71.
In the invention, the design of the transverse long and narrow window enables a camera shooting system to capture optical signals in all directions around the liquid drop so as to fully acquire interference fringe information and rainbow fringe information generated after an incident light source passes through the liquid drop, thereby realizing free liquid drop multi-parameter measurement based on a rainbow imaging principle.
The invention also provides a method for measuring the free liquid drop multi-parameter by using the rainbow imaging method in a high-temperature and high-pressure environment.
The method utilizes the measuring device of the invention; and comprises the following steps:
Step 1: turning on power supplies of the heating system, the liquid drop sampling system, the air inlet and exhaust system, the signal acquisition system and the computer control system 7;
step 2: starting the temperature control device 42 to heat the heating device 41 to a specified temperature (for example, 500K, 800K, 1000K, etc.);
And step 3: opening a second gas valve 222 of the exhaust system, and closing the second gas valve 222 of the exhaust system after pumping the gas in the test chamber 1 to vacuum; then, a first gas valve 212 of the gas inlet system is opened, and gas is filled into the test cavity 1 to a specified pressure (for example, 2 atmospheres, 5 atmospheres, 10 atmospheres and the like) through the gas inlet system and the pressure detection device 23;
And 4, step 4: starting the liquid drop injector 51, and filling the liquid into the liquid drop generator 52 through the liquid injection pipeline 511 by the liquid drop injector 51; then a string of free droplets is generated by the droplet generator 52 using the vibration principle;
Providing, by the computer control system, an initial temperature (the initial temperature may not be provided) and/or an initial velocity for the resulting stream of free droplets, such that the free droplets enter the heating device 41 through the small holes 45 in the heating device 41; recording initial temperature (initial temperature may not be recorded) and/or initial speed data in the computer control system;
And 5: starting a light source incidence system to provide a light source for the test cavity 1; starting a photoelectric sensor detection system, controlling the photoelectric sensor detection system to acquire optical signal information of a light source passing through free liquid drops in a test cavity 1 through a computer control system, converting the optical signal information into motion information of the free liquid drops through the computer control system, determining the free liquid drops suitable for measurement, and recording the motion information data of the free liquid drops in the computer control system;
Step 6: starting two camera shooting systems; controlling a camera shooting system to acquire optical signal information generated by a light source through free liquid drops in the test cavity 1 through a computer control system; the optical signal information generated by the light source through the free liquid drops in the test cavity 1 comprises interference fringe information generated by the light source through the free liquid drops in the test cavity 1; controlling another camera shooting system to acquire optical signal information generated by the light source through free liquid drops in the test cavity 1; the optical signal information generated by the light source through the free liquid drops in the test cavity 1 comprises rainbow stripe information generated by the light source through the free liquid drops in the test cavity 1; the rainbow fringe information is converted into multi-parameter data of the liquid drop through the interference fringe and the rainbow fringe information of a computer control system, so that the multi-parameter measurement of the free liquid drop measured by a rainbow imaging method is realized; recording multi-parameter data of the free liquid drops in a computer control system;
And 7: after all experiments are completed, the temperature control device 42 and the air inlet system are closed; starting an exhaust system, and vacuumizing the test cavity 1; then closing the exhaust system, opening the air inlet system, filling inert gas into the test cavity 1, and then closing the air inlet system;
And 8: and (4) exporting the experimental results, and closing the power supplies of the heating system, the liquid drop sample introduction system, the air intake and exhaust system, the signal acquisition system and the computer control system.
In one embodiment, if in step 5, the motion state of the free liquid droplet in the testing chamber 1 is found to be unsuitable for measurement, the computer control system may return to step 4 to adjust the initial temperature (the initial temperature may not be provided) and/or the initial velocity of the generated string of free liquid droplets.
in one embodiment, after the measurement in step 6 is finished, the steps 2-6 are repeated, and the multi-parameter data of the free liquid drops in the test cavity 1 under different temperature and pressure conditions are measured.
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are intended to be illustrative rather than restrictive, and many modifications may be made by those skilled in the art without departing from the spirit of the present invention within the scope of the appended claims.
Claims (10)
1. A free liquid drop multi-parameter measuring device based on a rainbow imaging principle is characterized by comprising a testing cavity, a heating system, a liquid drop sampling system, an air inlet and exhaust system, a signal acquisition system and a computer control system; wherein,
the test cavity is a closed cavity; four first transverse long and narrow windows are arranged on the side surface of the test cavity; the first transverse long and narrow window is used for transmitting light; a guide rail is arranged between the upper end surface and the lower end surface of the test cavity;
the heating system comprises a heating device; the heating device is positioned in the testing cavity and is fixed on the guide rail between the upper end surface and the lower end surface of the testing cavity; the heating device is a perforated cavity; four second transverse long and narrow windows are arranged on the side surface of the heating device; the second transverse long and narrow window is used for transmitting light; the positions of the four second transverse long and narrow viewing windows correspond to the positions of the four first transverse long and narrow viewing windows one by one; the upper end surface and the lower end surface of the heating device are respectively provided with a small hole so as to facilitate the liquid drops to enter and exit the heating device;
The liquid drop sampling system is positioned right below or above the heating device; the liquid drop sample injection system comprises a liquid drop sample injector and a liquid drop generator; the liquid drop injector is connected with the liquid drop generator through a liquid injection passage; the liquid drop sample injector is positioned outside the test cavity and is responsible for filling liquid into the liquid drop generator through the liquid sample injection passage; the droplet generator is positioned outside the heating device; the position of a liquid drop outlet of the liquid drop generator corresponds to the position of a small hole arranged on the heating device, and the liquid drop generator is responsible for generating liquid drops from liquid filled in the liquid drop injector and providing certain initial speed for the generated liquid drops so that the liquid drops can enter the heating device through the small hole;
the air intake and exhaust system comprises an exhaust system, an air intake system and a pressure detection system; the exhaust system, the air inlet system and the pressure detection system are all positioned outside the test cavity and are respectively connected with the test cavity;
The signal acquisition system comprises a light source incidence system, two camera shooting systems and a photoelectric sensor detection system; the light source incidence system, the camera shooting system and the photoelectric sensor detection system are all positioned outside the test cavity and are correspondingly arranged on two or more windows in the first transverse long and narrow window; the incident path of the light source in the light source incident system is opposite to the detection path of the photoelectric sensor detection system and is in line with the position of the liquid drop; the two camera photographing systems are distributed so that the angle between the photographing path of one of the camera photographing systems and the incident path of the light source is between 1 and 89 degrees and the angle between the photographing path of the other camera photographing system and the incident path of the light source is between 91 and 179 degrees; the camera shooting system and the photoelectric sensor detection system are used for acquiring optical signal information generated by a light source through free liquid drops in the test cavity;
and the computer control system is used for controlling the operation of each system in the measuring device, converting the optical signal information acquired by the signal acquisition system into multi-parameter information of the liquid drops and outputting the multi-parameter information.
2. the free-droplet multiparameter measuring device based on the rainbow imaging principle of claim 1, wherein the camera photographing system is configured to acquire optical signal information generated by a light source passing through a free droplet in the test chamber; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises interference fringe information and rainbow fringe information generated by the light source through the free liquid drops in the test cavity.
3. The free-droplet multiparameter measuring device based on the rainbow imaging principle of claim 1, wherein one of the camera photographing systems is used for acquiring optical signal information generated by a light source passing through a free droplet in the test chamber; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises interference fringe information generated by the light source through the free liquid drops in the test cavity; the other camera shooting system is used for acquiring optical signal information generated by the light source through the free liquid drops in the test cavity; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises rainbow stripe information generated by the light source through the free liquid drops in the test cavity.
4. A free-drop multiparameter measuring device based on the rainbow imaging principle as claimed in claim 1, wherein said heating system comprises a heating device and a temperature control device; the temperature control device is located outside the testing cavity and connected with the heating device.
5. the free-droplet multiparameter measuring device based on the rainbow imaging principle of claim 1, wherein the droplet sampling system is fixed to an upper end surface or a lower end surface of the test chamber.
6. the free-drop multi-parameter measurement device based on rainbow imaging principle as claimed in claim 1, wherein a lifter is further provided between the drop injector and the drop generator.
7. The free-droplet multiparameter measuring device based on the rainbow imaging principle of claim 1, wherein the light source incidence system and the photosensor detection system are respectively disposed in two opposite windows of the first transverse elongated window.
8. The apparatus according to claim 1, wherein the two camera imaging systems are distributed such that the angle between the imaging path of one camera imaging system and the incident path of the light source and the angle between the imaging path of the other camera imaging system and the incident path of the light source can be adjusted during the measurement process, so that the two camera imaging systems can maximally obtain the optical signal information generated by the light source through the free liquid droplets in the test chamber.
9. a free liquid drop multi-parameter measuring method based on rainbow imaging principle, characterized in that the method utilizes the free liquid drop multi-parameter measuring device based on rainbow imaging principle of claim 1; and the method comprises the steps of:
Step 1: turning on power supplies of the heating system, the liquid drop sampling system, the air inlet and exhaust system, the signal acquisition system and the computer control system;
step 2: starting a temperature control device, and heating the heating device to a specified temperature;
And step 3: opening an exhaust system, pumping gas in the test cavity to vacuum, and closing the exhaust system; then opening an air inlet system, and filling air into the test cavity to a specified pressure;
and 4, step 4: starting the liquid drop injector, and filling liquid into the liquid drop generator through the liquid drop injector; then a string of free liquid drops is generated by a liquid drop generator; providing initial speed for the generated free liquid drops through a computer control system, and enabling the free liquid drops to enter the heating device through the small holes in the heating device; recording the initial speed data in a computer control system;
And 5: starting a light source incidence system to provide a light source for the test cavity; starting a photoelectric sensor detection system, controlling the photoelectric sensor detection system through a computer control system to acquire optical signal information generated by a light source through free liquid drops in a test cavity, converting the optical signal information into motion information of the free liquid drops through the computer control system, determining the free liquid drops suitable for measurement, and recording the motion information data of the free liquid drops in the computer control system;
step 6: starting two camera shooting systems; controlling a camera shooting system to acquire optical signal information generated by a light source through free liquid drops in a test cavity through a computer control system; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises interference fringe information generated by the light source through the free liquid drops in the test cavity; controlling another camera shooting system to acquire optical signal information generated by the light source through the free liquid drops in the test cavity; the optical signal information generated by the light source through the free liquid drops in the test cavity comprises rainbow stripe information generated by the light source through the free liquid drops in the test cavity; converting the interference fringe information and the rainbow fringe information into multi-parameter data of the liquid drop through a computer control system, thereby realizing multi-parameter measurement of the free liquid drop; and recording multi-parameter data of the free liquid drops in a computer control system;
And 7: after all experiments are finished, the temperature control device and the air inlet system are closed; starting an exhaust system, and vacuumizing the test cavity; then closing the exhaust system, opening the air inlet system, and closing the air inlet system after filling inert gas into the test cavity;
And 8: and outputting each data, and closing the power supplies of the heating system, the liquid drop sampling system, the air inlet and exhaust system, the signal acquisition system and the computer control system.
10. The rainbow imaging principle-based free-droplet multiparameter measurement method according to claim 9, wherein after the measurement in step 6 is completed, steps 2-6 are repeated to measure multiparameter data of free droplets inside the test chamber under different temperature and pressure conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910971611.3A CN110553952A (en) | 2019-10-14 | 2019-10-14 | Free liquid drop multi-parameter measuring device and method based on rainbow imaging principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910971611.3A CN110553952A (en) | 2019-10-14 | 2019-10-14 | Free liquid drop multi-parameter measuring device and method based on rainbow imaging principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110553952A true CN110553952A (en) | 2019-12-10 |
Family
ID=68742684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910971611.3A Pending CN110553952A (en) | 2019-10-14 | 2019-10-14 | Free liquid drop multi-parameter measuring device and method based on rainbow imaging principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110553952A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916814A (en) * | 2019-03-18 | 2019-06-21 | 上海交通大学 | For solid particle ermal physics/chemistry visualization and spectral measurement device and method |
| CN111337439A (en) * | 2020-04-20 | 2020-06-26 | 厦门汇美集智科技有限公司 | Multi-mode spectrum testing device |
| FR3124589A1 (en) * | 2021-06-28 | 2022-12-30 | Exel Industries | DROP ANALYSIS SYSTEM AND COATING INSTALLATION COMPRISING SUCH SYSTEM |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020018204A1 (en) * | 2000-07-28 | 2002-02-14 | Bernd Sachweh | Method and apparatus for determining physical collective parameters of particles of gases |
| US20070023037A1 (en) * | 2005-07-27 | 2007-02-01 | The Curators Of The University Of Missouri | Focused droplet nebulizer for evaporative light scattering detector |
| CN102003936A (en) * | 2010-09-14 | 2011-04-06 | 浙江大学 | Method and device for simultaneously measuring droplet position, particle sizes and complex refractive index |
| CN103698130A (en) * | 2013-12-23 | 2014-04-02 | 上海交通大学 | Optical window for visualized high-temperature high-pressure container |
| CN103698256A (en) * | 2013-12-25 | 2014-04-02 | 浙江大学 | Method and device for on-line measurement of liquid spraying through full-field rainbow |
| CN103842797A (en) * | 2013-05-10 | 2014-06-04 | 浙江大学 | One-dimensional full-field rainbow measurement device and measurement method |
| CN103926196A (en) * | 2014-04-29 | 2014-07-16 | 平湖瓦爱乐发动机测试技术有限公司 | Spherical multifunctional constant volume bomb |
| CN108444877A (en) * | 2018-06-11 | 2018-08-24 | 浙江大学 | A kind of phase particle interference imaging method and device for measuring drop |
| CN108507912A (en) * | 2018-06-11 | 2018-09-07 | 浙江大学 | Phase rainbow measurement method and device for dynamic drop physical parameters measurement |
| CN109916814A (en) * | 2019-03-18 | 2019-06-21 | 上海交通大学 | For solid particle ermal physics/chemistry visualization and spectral measurement device and method |
-
2019
- 2019-10-14 CN CN201910971611.3A patent/CN110553952A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020018204A1 (en) * | 2000-07-28 | 2002-02-14 | Bernd Sachweh | Method and apparatus for determining physical collective parameters of particles of gases |
| US20070023037A1 (en) * | 2005-07-27 | 2007-02-01 | The Curators Of The University Of Missouri | Focused droplet nebulizer for evaporative light scattering detector |
| CN102003936A (en) * | 2010-09-14 | 2011-04-06 | 浙江大学 | Method and device for simultaneously measuring droplet position, particle sizes and complex refractive index |
| CN103842797A (en) * | 2013-05-10 | 2014-06-04 | 浙江大学 | One-dimensional full-field rainbow measurement device and measurement method |
| CN103698130A (en) * | 2013-12-23 | 2014-04-02 | 上海交通大学 | Optical window for visualized high-temperature high-pressure container |
| CN103698256A (en) * | 2013-12-25 | 2014-04-02 | 浙江大学 | Method and device for on-line measurement of liquid spraying through full-field rainbow |
| CN103926196A (en) * | 2014-04-29 | 2014-07-16 | 平湖瓦爱乐发动机测试技术有限公司 | Spherical multifunctional constant volume bomb |
| CN108444877A (en) * | 2018-06-11 | 2018-08-24 | 浙江大学 | A kind of phase particle interference imaging method and device for measuring drop |
| CN108507912A (en) * | 2018-06-11 | 2018-09-07 | 浙江大学 | Phase rainbow measurement method and device for dynamic drop physical parameters measurement |
| CN109916814A (en) * | 2019-03-18 | 2019-06-21 | 上海交通大学 | For solid particle ermal physics/chemistry visualization and spectral measurement device and method |
Non-Patent Citations (1)
| Title |
|---|
| ROTH, N.等: "Simultaneous Measurement of Temperature and Size of Droplets in the Micrometer Range", 《JOURNAL OF LASER APPLICATIONS》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916814A (en) * | 2019-03-18 | 2019-06-21 | 上海交通大学 | For solid particle ermal physics/chemistry visualization and spectral measurement device and method |
| CN111337439A (en) * | 2020-04-20 | 2020-06-26 | 厦门汇美集智科技有限公司 | Multi-mode spectrum testing device |
| FR3124589A1 (en) * | 2021-06-28 | 2022-12-30 | Exel Industries | DROP ANALYSIS SYSTEM AND COATING INSTALLATION COMPRISING SUCH SYSTEM |
| EP4112183A1 (en) * | 2021-06-28 | 2023-01-04 | Exel Industries | System for analysing drops and coating facility comprising such a system |
| US11896985B2 (en) | 2021-06-28 | 2024-02-13 | Exel Industries | System for analysing drops and coating installation comprising such a system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110553952A (en) | Free liquid drop multi-parameter measuring device and method based on rainbow imaging principle | |
| Iritani et al. | Heat transfer mechanism and associated turbulence structure in the near-wall region of a turbulent boundary layer | |
| US5341676A (en) | Surface pressure measurement by oxygen quenching of luminescence | |
| US5326969A (en) | System for characterizing flow pattern and pressure of a fluid | |
| Ni et al. | Lagrangian acceleration measurements in convective thermal turbulence | |
| CN109163982A (en) | A kind of thermal environment bilateral loading equipment and test method | |
| CN110346285A (en) | Mechanical characteristic detection device and force detection system | |
| CN103698256A (en) | Method and device for on-line measurement of liquid spraying through full-field rainbow | |
| Zare-Behtash et al. | Pressure sensitive paint measurements at high Mach numbers | |
| CN108507912A (en) | Phase rainbow measurement method and device for dynamic drop physical parameters measurement | |
| CN107014445A (en) | A kind of gas jet characteristic comprehensive measurement device and method | |
| CN107271188B (en) | A kind of constant volume combustion bomb of analog vortex and tumble motion | |
| CN108519226B (en) | Nozzle coking visualization test device with adjustable electric field | |
| US5249864A (en) | System for characterizing temperature of fluids | |
| CN109596647A (en) | A method of for neutron scattering experiment | |
| US5272333A (en) | System for characterizing pressure, movement, and temperature of fluids | |
| CN2697613Y (en) | Color and near-infrared based double-CCD image temp. detection probe | |
| CN109916814B (en) | Device and method for solid particle thermophysical/chemical visualization and spectral measurement | |
| CN209416532U (en) | Detection device for thermally stimulated current method | |
| Han et al. | Research on optical air chamber of infrared gas sensor | |
| CN209387555U (en) | A kind of device for neutron scattering experiment | |
| CN113281051A (en) | Engine infrared heat flow three-dimensional visual air passage flow stabilization experiment table and test method | |
| CN109932305B (en) | Experimental device and method for testing inter-particle contact angle of unsaturated particulate material | |
| CN200986504Y (en) | Microwave chemical sample preparation instrument configuring with camera and display apparatus | |
| Falcone et al. | Identifying uncertainties in diesel spray rate-of-momentum transients under elevated back pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |