CN109001083B - Roller type non-uniform bed-load particle sorting test device and test method thereof - Google Patents
Roller type non-uniform bed-load particle sorting test device and test method thereof Download PDFInfo
- Publication number
- CN109001083B CN109001083B CN201810584169.4A CN201810584169A CN109001083B CN 109001083 B CN109001083 B CN 109001083B CN 201810584169 A CN201810584169 A CN 201810584169A CN 109001083 B CN109001083 B CN 109001083B
- Authority
- CN
- China
- Prior art keywords
- laser
- transparent cylinder
- speed camera
- transparent
- cylinder
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 239000002245 particle Substances 0.000 title claims abstract description 59
- 238000010998 test method Methods 0.000 title description 6
- 239000011521 glass Substances 0.000 claims abstract description 31
- 239000011324 bead Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 239000001022 rhodamine dye Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 abstract description 9
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
-
- 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
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0053—Investigating dispersion of solids in liquids, e.g. trouble
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The roller type non-uniform bed load particle sorting test device is characterized in that a transparent cylinder is used for accommodating spherical glass beads with different particle sizes required by a test, one side of the transparent cylinder is restrained from axial displacement by a thrust bearing, and a protective cover is arranged at the top of the transparent cylinder; the driving motor is arranged on the upper side of the transparent cylinder and drives the transparent cylinder to rotate through gear transmission; the laser beam emitted by the laser passes through the circular section of the transparent cylinder in the form of a laser surface, and the illuminated section of the laser beam in the cylindrical cylinder is a shooting area of the high-speed camera; the high-speed camera is used for shooting the displacement characteristics of the spherical glass beads of the laser irradiation section, and is connected with the computer through the data wire to store the shot images. And provides a roller type non-uniform bed-load particle sorting test device. The invention simplifies the physical process of non-uniform bed load diffusion and separation, reduces the influence of other interference items except the particle size in the test process, and thus obtains more regular test data for supporting theoretical research.
Description
Technical Field
The invention relates to the field of bed-load movement, in particular to a roller type non-uniform bed-load particle sorting test device and a test method thereof, which are used for simulating the diffusion characteristics of non-uniform bed-load particles and sorting rules of bed-loads with different particle diameters.
Background
The diffusion and separation characteristics of the bed material have an important influence on the deposition and formation of the bed Sha Po at the estuary. The surface layer of the river bed is usually a roughened layer, and fine particle bed load is usually deposited to the bottom of the river bed, but people have limited knowledge of the general regular formation mechanism in nature.
In order to understand the formation mechanism of the natural characteristic, researchers establish a physical model test with similar proportion, and the non-uniform bed-load in the nature is simulated by adopting particles with different particle sizes. Experiments show that the particle size of the bed load has important influence on the deposition process and the sorting characteristics of the vertical section. Therefore, the sorting rule of the bed load with different particle sizes is further searched through a simplified physical model test, and a theoretical model is searched for the sorting rule, so that the sorting rule is a necessary direction of future research.
The current conventional bed load particle sorting test device is generally to establish an indoor long and slow slope water tank to simulate a river bed in nature, determine the particle size of bed load according to a similar theory, and simulate the movement of the bed load at the bottom of a river by injecting water and supplying the bed load particles at the upstream side of the water tank for a long time. In the scheme, when water is injected, the bed charge particles are continuously fed into the upstream side, and after the bed charge particles enter the water tank from the upstream side, one part of the bed charge particles are carried by water flow to flow out of the tail end of the water tank, and the other part of the bed charge particles are deposited on the bottom of the water tank. The problem of this solution is that the random process of movement of the bed load in the water tank results in insufficient simplification of the test data obtained by the solution, whereas the theoretical research is usually a simplified model, which is difficult to provide support for the theoretical research; 2. the operational range of the corresponding relation regulation of the flow rate of water and the corresponding bed load supply rate is too large, so that the universality of test research is reduced to a certain extent. 3. Errors in the process of feeding the bed load cannot be avoided, and the sand conveying amount is difficult to control accurately. 4. The indoor long water tank usually occupies too large space for ensuring the test scale; 5. real-time monitoring is difficult and cannot be replicated at every time point.
The invention discloses a device for testing a bed load vertical section sorting model and a using method thereof (patent number: CN 105841920A), and discloses a solution for replacing a long water tank by installing and conveying belt at the bottom of a closed water tank. The scheme solves the problem that the indoor long water tank occupies too large space, realizes real-time display of the process of sorting and diffusing the bed-load particles, but theoretical analysis of test data is still not simple and effective enough, and is difficult to summarize the general rule of the bed-load particles.
Therefore, the test device for simplifying the conventional water tank design is provided for supporting theoretical research, is the direction of effort pursued by scientific researchers and engineering technicians, and is a necessary condition for carrying out deep theoretical research on non-uniform bed-load diffusion and sorting.
Disclosure of Invention
In order to overcome the defects of complex physical process and poor effectiveness of non-uniform bed-load diffusion and separation in the prior art, the invention provides a roller type non-uniform bed-load particle separation test device and a test method thereof, and the test device is designed aiming at bed-load separation with different particle sizes, so that the physical process of non-uniform bed-load diffusion and separation is simplified, the influence of other interference items except the particle sizes in the test process is reduced, and more regular test data are obtained for supporting theoretical research.
The technical scheme adopted for solving the technical problems is as follows:
A drum-type non-uniform bed load particle sorting test device comprises a support, a transparent cylinder, a driving motor, laser equipment, an optical lens and a high-speed camera, wherein the transparent cylinder, the driving motor, the laser equipment, the optical lens and the high-speed camera are arranged on the support; the driving motor is a variable-frequency speed-regulating motor and is arranged on the upper side of the transparent cylinder, and the transparent cylinder is driven to rotate through gear transmission; the laser device and the optical lens comprise a laser, the laser beam emitted by the laser passes through the circular section of the transparent cylinder in the form of a laser surface through the focusing lens, the reflecting lens and the pyramid, and the illuminated section of the laser beam in the cylindrical cylinder is a shooting area of the high-speed camera; the high-speed camera is used for shooting the displacement characteristics of the spherical glass beads of the laser irradiation section, and is connected with the computer through a data line to store the shot images.
Preferably, the transparent cylinder is made of transparent organic glass material, the diameter of the cylinder is 30 cm-60 cm, the length of the cylinder is 40 cm-70 cm, and the wall thickness of the cylinder is 1.5 cm-2.5 cm.
The protective cover is made of organic plastic material, the thickness of the protective cover is 2 cm-4 cm, the protective cover is connected to the support through the arc-shaped fixing strip, and the protective cover can prevent the transparent cylinder from sliding down in the experimental process so as to increase the safety of the device.
The driving motor can rotate at a constant speed after being powered on, the adjustable range of the rotating speed is 0.1 r/s-5 r/s, a gear is arranged at the head of a motor rotating shaft, the diameter is 10 cm-30 cm, the driving motor is arranged above the transparent cylinder and used for driving the transparent cylinder to rotate, the gear is arranged at the contact part of the transparent cylinder and the driving motor, and the other parts are smooth surfaces.
The high-speed camera is a black-and-white camera or a color camera and is used for shooting the inside of the transparent cylinder, the highest shooting frequency under the pixel number of 600 x 800 is not lower than 30fps, the high-speed camera is positioned right in front of the side face of the cylinder and is fixed on the tripod, the height and the position of the tripod are adjusted, so that the shooting window of the tripod can cover the whole section, and the high-speed camera is connected with the computer through a data line.
The wavelength of the laser emitted by the laser is 532nm, the power is 3 KW-8 KW, the laser is fixed on a bracket above the test device, and the light beam emitted by the laser passes through the circular section of the transparent cylinder through the adjustment of the light path by the condenser, the reflector and the pyramid.
The support be aluminum alloy material, pass through welding and screw fixation between the support, the support includes one-level support and second grade support, one-level support is 5cm 10 cm's rectangle side pipe, second grade support is 5 cm's rectangle side pipe.
A drum-type non-uniform bed charge particle sorting test method comprises the following steps:
(1) Manufacturing a bracket;
(2) 2-3 transparent glass beads with different particle sizes are selected and placed in a processed transparent cylinder according to a required proportion, so that the transparent glass beads fill the whole transparent cylinder;
(3) Adding clear water into the transparent cylinder, adding 0.1-0.5 g rhodamine dye into the clear water, and sealing the cylinder;
(4) The transparent cylinder is arranged on 4 pulleys, one side of the transparent cylinder is restrained to axially displace through a thrust bearing, a protective cover is arranged on the outer side of the transparent cylinder and fixed on a bracket, and then a driving motor is arranged and is linked with the transparent cylinder;
(5) Fixing a laser on a bracket, sequentially installing a condensing lens, a reflecting mirror and a pyramid, and adjusting the position of a test lens to enable a laser beam to just pass through the center of the lens, so that the irradiation range of the laser beam can cover the circular section of the whole transparent cylinder;
(6) The high-speed camera is installed and connected with the computer through a data line, the high-speed camera is installed on the side opposite to the side protection cover, the lens of the high-speed camera is perpendicular to the laser irradiation surface, and the height and the position of the tripod are adjusted, so that the shooting window of the high-speed camera covers the whole circular section of the transparent cylinder;
(7) The driving motor is powered on to rotate at a constant speed, and the rotating speed of the driving motor is adjusted according to the test requirement; opening a high-speed camera, and setting the shooting frame number per second and the total shooting time length of the high-speed camera; all light sources around the experimental equipment are closed, a laser is turned on, and the laser intensity is adjusted according to the effect of a display window of a camera;
(8) After the test is finished, storing video shot by the high-speed camera, and storing the video in a video format or a picture format; closing the laser, the high-speed camera and the driving motor;
(9) Based on the shot image information, the displacement characteristics of the transparent glass beads are obtained by utilizing an image processing technology.
Preferably, in the step (1), the bracket is welded by a rectangular aluminum alloy square tube, and the pulley and the backing plate are installed.
In the step (4), a gear is arranged at the contact part of the transparent cylinder and the driving motor, and the two gears are meshed.
In the invention, the bed charge particles with different particle sizes are placed in the transparent cylinder, the cylinder is driven by external force to rotate continuously, and the bed charge with different particle sizes can be sorted in the rotating process. The test device has the characteristics that large-particle-size particles diffuse to the periphery and small-particle-size particles diffuse to the axle center, and the characteristics that the small-particle-size particles of a river bed are deposited downwards in nature and the large-particle-size particles are usually deposited on the surface layer of the river bed correspond to each other. In addition, the transparent cylinder section is irradiated by the laser beam, and the round section of the cylinder type test device is observed by a high-speed camera to obtain the real-time distribution characteristics of particles with different particle diameters, so that the dynamic process of particle sorting can be obtained. The device has no limitation of factors such as water flow, sand conveying amount and the like, can simply and effectively study the motion mechanism of the sorting process, and provides possibility for corresponding theoretical study.
The device is characterized in that particles with different particle diameters are placed in a transparent cylinder, and the transparent cylinder is continuously rotated to realize displacement transition of the particles with different particle diameters inside. The displacement transition characteristics of large-particle-size particles diffusing to the periphery and small-particle-size particles diffusing to the axis are researched to be used as simplified physical model tests for sorting non-uniform particles of bed load. The method not only simplifies the conventional physical model of bed-load separation and diffusion, avoids interference factors such as water velocity, boundary effect and the like in the conventional test, can obtain displacement data of two particle sizes with simple, effective and obvious regularity, but also can monitor the displacement characteristics of the particles in real time and obtain a large amount of experimental data, so that the displacement rule is summarized more simply and conveniently, and a reliable simplified model is provided for theoretical research of bed-load separation.
The beneficial effects of the invention are mainly shown in the following steps: the device adopts the transparent cylinder as a test device, and through researching the speed and displacement characteristics of the large-grain-size grains moving to the periphery and the small-grain-size grains moving to the axis in the rotation process of the transparent cylinder, the conventional physical model for separating and diffusing the bed-load is simplified, the interference factors such as water speed, boundary effect and the like in the conventional test are avoided, the displacement data of the two grain-size grains with simple, effective and obvious regularity can be obtained, the displacement characteristics are monitored in real time, and a simplified model and reliable test basis are provided for theoretical research of bed-load separation.
Drawings
FIG. 1 is a front view of a test device of the present invention;
FIG. 2 is a side view of the test device of the present invention;
FIG. 3 is a detail view of the junction of the roller and cylinder of the test device of the present invention;
The laser device comprises a wiring line 1, a laser device 2, a first laser focusing lens 3, a lens fixing shaft 4, a reflecting lens 5, a second laser focusing lens 6, a pyramid 7, a protective cover 8, a high-speed camera irradiation range 9, a high-speed camera 10, a data line 11, a computer 12, a tripod 13, a primary support 14, a support base 15, a secondary support 16, a backing plate 17, a driving motor 18, a thrust bearing 19, spherical glass beads 20, pulleys 21, arc-shaped fixing strips 22, a transparent cylinder 23, laser rays 24, a cylindrical gear 25 and a driving motor gear 26.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 3, a drum-type non-uniform bed load particle sorting test device comprises a bracket, a transparent cylinder, a driving motor, a laser device, an optical lens and a high-speed camera, wherein the transparent cylinder, the driving motor, the laser device, the optical lens and the high-speed camera are arranged on the bracket; the driving motor is a variable-frequency speed-regulating motor and is arranged on the upper side of the transparent cylinder, and the transparent cylinder is driven to rotate through gear transmission; the laser device and the optical lens comprise a laser, the laser beam emitted by the laser passes through the circular section of the transparent cylinder in the form of a laser surface through the focusing lens, the reflecting lens and the pyramid, and the illuminated section of the laser beam in the cylindrical cylinder is a shooting area of the high-speed camera; the high-speed camera is used for shooting the displacement characteristics of the spherical glass beads of the laser irradiation section, and is connected with the computer through a data line to store the shot images.
Preferably, the transparent cylinder is made of transparent organic glass material, the diameter of the cylinder is 30 cm-60 cm, the length of the cylinder is 40 cm-70 cm, and the wall thickness of the cylinder is 1.5 cm-2.5 cm.
The protective cover is made of organic plastic material, the thickness of the protective cover is 2 cm-4 cm, the protective cover is connected to the support through the arc-shaped fixing strip, and the protective cover can prevent the transparent cylinder from sliding down in the experimental process so as to increase the safety of the device.
The driving motor can rotate at a constant speed after being powered on, the adjustable range of the rotating speed is 0.1 r/s-5 r/s, a gear is arranged at the head of a motor rotating shaft, the diameter is 10 cm-30 cm, the driving motor is arranged above the transparent cylinder and used for driving the transparent cylinder to rotate, the gear is arranged at the contact part of the transparent cylinder and the driving motor, and the other parts are smooth surfaces.
The high-speed camera is a black-and-white camera or a color camera and is used for shooting the inside of the transparent cylinder, the highest shooting frequency under the pixel number of 600 x 800 is not lower than 30fps, the high-speed camera is positioned right in front of the side face of the cylinder and is fixed on the tripod, the height and the position of the tripod are adjusted, so that the shooting window of the tripod can cover the whole section, and the high-speed camera is connected with the computer through a data line.
The wavelength of the laser emitted by the laser is 532nm, the power is 3 KW-8 KW, the laser is fixed on a bracket above the test device, and the light beam emitted by the laser passes through the circular section of the transparent cylinder through the adjustment of the light path by the condenser, the reflector and the pyramid.
The support be aluminum alloy material, pass through welding and screw fixation between the support, the support includes one-level support and second grade support, one-level support is 5cm 10 cm's rectangle side pipe, second grade support is 5 cm's rectangle side pipe.
In this embodiment, the device is composed of a wiring line 1, a laser 2, a first laser focusing lens 3, a lens fixing shaft 4, a reflecting lens 5, a second laser focusing lens 6, a pyramid 7, a protective cover 8, a high-speed camera 10, a data line 11, a computer 12, a tripod 13, a primary support 14, a support base 15, a secondary support 16, a backing plate 17, a driving motor 18, a thrust bearing 19, a spherical glass bead 20, a pulley 21, an arc-shaped fixing bar 22, a transparent cylinder 23, a cylinder gear 25, and a driving motor gear 26.
The device adopts the transparent cylinder as a test device, and through researching the speed and displacement characteristics of the large-grain-size grains moving to the periphery and the small-grain-size grains moving to the center of a circle in the rotation process of the transparent cylinder, the conventional physical model for separating and diffusing the bed-load is simplified, the interference factors such as water speed and boundary effect in the conventional test are avoided, the displacement data of the two grain-size grains with simple, effective and obvious regularity can be obtained, the displacement characteristics are monitored in real time, and a simplified model and reliable test basis are provided for theoretical research of bed-load separation.
A drum-type non-uniform bed charge particle sorting test method comprises the following steps:
(1) Manufacturing a bracket;
(2) 2-3 transparent glass beads with different particle sizes are selected and placed in a processed transparent cylinder according to a required proportion, so that the transparent glass beads fill the whole transparent cylinder;
(3) Adding clear water into the transparent cylinder, adding 0.1-0.5 g rhodamine dye into the clear water, and sealing the cylinder;
(4) The transparent cylinder is arranged on 4 pulleys, one side of the transparent cylinder is restrained to axially displace through a thrust bearing, a protective cover is arranged on the outer side of the transparent cylinder and fixed on a bracket, and then a driving motor is arranged and is linked with the transparent cylinder;
(5) Fixing a laser on a bracket, sequentially installing a condensing lens, a reflecting mirror and a pyramid, and adjusting the position of a test lens to enable a laser beam to just pass through the center of the lens, so that the irradiation range of the laser beam can cover the circular section of the whole transparent cylinder;
(6) The high-speed camera is installed and connected with the computer through a data line, the high-speed camera is installed on the side opposite to the side protection cover, the lens of the high-speed camera is perpendicular to the laser irradiation surface, and the height and the position of the tripod are adjusted, so that the shooting window of the high-speed camera covers the whole circular section of the transparent cylinder;
(7) The driving motor is powered on to rotate at a constant speed, and the rotating speed of the driving motor is adjusted according to the test requirement; opening a high-speed camera, and setting the shooting frame number per second and the total shooting time length of the high-speed camera; all light sources around the experimental equipment are closed, a laser is turned on, and the laser intensity is adjusted according to the effect of a display window of a camera;
(8) After the test is finished, storing video shot by the high-speed camera, and storing the video in a video format or a picture format; closing the laser, the high-speed camera and the driving motor;
(9) Based on the shot image information, the displacement characteristics of the transparent glass beads are obtained by utilizing an image processing technology.
Preferably, in the step (1), the bracket is welded by a rectangular aluminum alloy square tube, and the pulley and the backing plate are installed.
In the step (4), a gear is arranged at the contact part of the transparent cylinder and the driving motor, and the two gears are meshed.
Example 1: impact test of particle size ratio in bed load sorting
A transparent cylinder 23 of prefabricated organic glass material, 40cm in diameter and 60cm in length, with a wall thickness of 1.5cm. The black protective cover 8 made of organic plastic material is prefabricated, and the thickness is 3cm. A plurality of rectangular square tubes made of aluminum alloy materials and a plurality of screws are prepared, the primary support 14 needs to be a rectangular square tube with the length of 5cm x 10cm, and the secondary support 16 needs to be a rectangular square tube with the length of 5cm x 5cm. The prefabricated protective cover 8 is fixed on the primary support 14 by an arc-shaped fixing strip 22 around the outer side of the transparent cylinder 23. A drive motor 18 having a maximum rotation speed of 5r/s and a diameter of 10cm was purchased and mounted on the bracket 14, and a gear 26 was mounted on the head of the rotation shaft so as to be engaged with a gear 25 on the outer side of the transparent cylinder 23. The black-and-white high-speed camera 10 is mounted on a tripod 13, and the height and position of the tripod 13 are adjusted so that the irradiation range 9 thereof should cover the entire cylindrical cross section, and a computer 12 is connected via a data line 11, and the photographing frequency thereof is set to 10fps. A laser 2 having a wavelength of 532nm and a power of 3KW was mounted and fixed on a secondary support 16 above the test apparatus, and a condenser lens 3, a mirror 5 and a pyramid 7 were mounted, and the optical lens position was adjusted so that a laser beam 24 could pass through the center position thereof and illuminate the cross section of the entire transparent cylinder.
The specific operations of the test are divided into three groups:
A first set of tests, selected a diameter ratio of 1:2, the diameter of the small transparent glass beads is 1cm, the diameter of the large transparent glass beads is 2cm, and the two transparent glass beads are 1:1 is placed in the transparent cylinder 23 such that the transparent glass beads 20 fill the entire transparent cylinder 23. Clear water was filled in the transparent cylinder 23, then 0.5g of rhodamine dye was added to the clear water, and the transparent cylinder 23 was closed. The transparent cylinder 23 is placed on 4 pulleys 21 and restrained from axial displacement on one side by a thrust bearing 19, the protective cover 8 is mounted and fixed to the bracket 14 by an arc-shaped fixing bar 22, and then the driving motor 18 is mounted. The drive motor 18 is connected with the electric wire 1 to rotate at uniform speed, and the rotating speed is adjusted according to the test requirement. The high-speed camera 10 is turned on, and the number of photographing frames per second and the total photographing time period of the high-speed camera 10 are set. All light sources around the experimental equipment are turned off, the laser 2 is turned on, and the laser intensity is adjusted according to the effect of a display window of the camera. After the test is finished, storing the video shot by the high-speed camera, and storing the video in a video format or a picture format. The laser 2, the high speed camera 10 and the drive motor 18 are turned off. Based on the captured image information, the displacement characteristics of the transparent glass beads 20 and the velocity field of the fluid within the cross section are obtained using image processing techniques.
A second set of tests, selected a diameter ratio of 1:3, the diameter of the small transparent glass beads is 1cm, the diameter of the large transparent glass beads is 3cm, and the two transparent glass beads are 1: the mass ratio of 1 was placed in the transparent cylinder 23, otherwise the same as in the first set of tests.
In a third set of tests, a diameter ratio of 1:4, the diameter of the small transparent glass beads is 1cm, the diameter of the large transparent glass beads is 4cm, and the two transparent glass beads are 1: the mass ratio of 1 was placed in a transparent cylinder 23, otherwise identical to the first set of tests.
Claims (9)
1. The roller type non-uniform bed load particle sorting test device is characterized by comprising a bracket, a transparent cylinder, a driving motor, laser equipment, an optical lens and a high-speed camera, wherein the transparent cylinder, the driving motor, the laser equipment, the optical lens and the high-speed camera are arranged on the bracket; the driving motor is a variable-frequency speed-regulating motor and is arranged on the upper side of the transparent cylinder, the transparent cylinder is driven to rotate through gear transmission, a gear is arranged at the contact part of the transparent cylinder and the driving motor, and the other parts are smooth surfaces; the laser device and the optical lens comprise a laser, the laser beam emitted by the laser passes through the circular section of the transparent cylinder in the form of a laser surface through the focusing lens, the reflecting lens and the pyramid, and the illuminated section of the laser beam in the cylindrical cylinder is a shooting area of the high-speed camera; the high-speed camera is used for shooting the displacement characteristics of the spherical glass beads of the laser irradiation section, and is connected with the computer through a data line to store the shot images; the wavelength of the laser emitted by the laser is 532nm, the power is 3 KW-8 KW, the laser is fixed on a bracket above the test device, and the light beam emitted by the laser passes through the circular section of the transparent cylinder through the adjustment of the light path by the condenser, the reflector and the pyramid.
2. The drum-type non-uniform bed charge particle sorting test device according to claim 1, wherein the transparent drum is made of transparent organic glass material, the diameter of the drum is 30 cm-60 cm, the length of the drum is 40 cm-70 cm, and the wall thickness of the drum is 1.5 cm-2.5 cm.
3. The drum-type non-uniform bed load particle sorting test device according to claim 1 or 2, wherein the protective cover is made of organic plastic material and has a thickness of 2 cm-4 cm, and is connected to the bracket through an arc-shaped fixing strip.
4. The drum-type non-uniform bed load particle sorting test device according to claim 1 or 2, wherein the rotating speed of the driving motor can be adjusted within the range of 0.1 r/s-5 r/s, and the diameter of the motor rotating shaft is 10 cm-30 cm by installing a gear at the head of the motor rotating shaft.
5. The device for sorting and testing the non-uniform bed-load particles according to claim 1 or 2, wherein the high-speed camera is a black-and-white camera or a color camera, is used for shooting the inside of the transparent cylinder, the highest shooting frequency under 600 x 800 pixels is not lower than 30fps, the high-speed camera is positioned right in front of the side surface of the cylinder, is fixed on a tripod, and adjusts the height and the position of the tripod so that the shooting window of the tripod covers the whole section, and is connected with a computer through a data line.
6. The drum-type non-uniform bed load particle sorting test device according to claim 1 or 2, wherein the supports are made of aluminum alloy, the supports are fixed by welding and screws, the supports comprise a primary support and a secondary support, the primary support is a rectangular square tube with the length of 5cm multiplied by 10cm, and the secondary support is a rectangular square tube with the length of 5cm multiplied by 5 cm.
7. A method for implementing the drum-type non-uniform bed charge particle sorting test apparatus according to claim 1, wherein the method comprises the steps of:
(1) Manufacturing a bracket;
(2) 2-3 transparent glass beads with different particle sizes are selected and placed in a processed transparent cylinder according to a required proportion, so that the transparent glass beads fill the whole transparent cylinder;
(3) Adding clear water into the transparent cylinder, adding 0.1-0.5 g rhodamine dye into the clear water, and sealing the cylinder;
(4) The transparent cylinder is arranged on 4 pulleys, one side of the transparent cylinder is restrained to axially displace through a thrust bearing, a protective cover is arranged on the outer side of the transparent cylinder and fixed on a bracket, and then a driving motor is arranged and is linked with the transparent cylinder;
(5) Fixing a laser on a bracket, sequentially installing a condensing lens, a reflecting mirror and a pyramid, and adjusting the position of a test lens to enable a laser beam to just pass through the center of the lens, so that the irradiation range of the laser beam can cover the circular section of the whole transparent cylinder;
(6) The high-speed camera is installed and connected with the computer through a data line, the high-speed camera is installed on the side opposite to the side protection cover, the lens of the high-speed camera is perpendicular to the laser irradiation surface, and the height and the position of the tripod are adjusted, so that the shooting window of the high-speed camera covers the whole circular section of the transparent cylinder;
(7) The driving motor is powered on to rotate at a constant speed, and the rotating speed of the driving motor is adjusted according to the test requirement; opening a high-speed camera, and setting the shooting frame number per second and the total shooting time length of the high-speed camera; all light sources around the experimental equipment are closed, a laser is turned on, and the laser intensity is adjusted according to the effect of a display window of a camera;
(8) After the test is finished, storing video shot by the high-speed camera, and storing the video in a video format or a picture format; closing the laser, the high-speed camera and the driving motor;
(9) Based on the shot image information, the displacement characteristics of the transparent glass beads are obtained by utilizing an image processing technology.
8. The method of claim 7, wherein: in the step (1), a rectangular aluminum alloy square tube is used for welding a bracket, and a pulley and a backing plate are installed.
9. The method of claim 7 or 8, wherein: in the step (4), a gear is arranged at the contact part of the transparent cylinder and the driving motor, and the two gears are meshed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810584169.4A CN109001083B (en) | 2018-06-08 | 2018-06-08 | Roller type non-uniform bed-load particle sorting test device and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810584169.4A CN109001083B (en) | 2018-06-08 | 2018-06-08 | Roller type non-uniform bed-load particle sorting test device and test method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109001083A CN109001083A (en) | 2018-12-14 |
| CN109001083B true CN109001083B (en) | 2024-05-10 |
Family
ID=64600949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810584169.4A Active CN109001083B (en) | 2018-06-08 | 2018-06-08 | Roller type non-uniform bed-load particle sorting test device and test method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109001083B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447399A (en) * | 2021-06-23 | 2021-09-28 | 淄博清大粉体材料工程有限公司 | Rolling type powder flowability measuring device based on image processing |
| CN113556452B (en) * | 2021-07-19 | 2022-06-17 | 柴勇 | Photographing device and photographing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3015843U (en) * | 1995-03-15 | 1995-09-12 | 株式会社クワバラ解体 | Debris sorting device |
| GB201415419D0 (en) * | 2014-09-01 | 2014-10-15 | Univ Lancaster | Tracer |
| CN105841920A (en) * | 2016-03-23 | 2016-08-10 | 河海大学 | Riverbed bed load vertical section separating model test device and use method thereof |
| CN105841919A (en) * | 2016-03-23 | 2016-08-10 | 河海大学 | Device for testing movement of solid matter in viscous non-Newtonian fluid and use method thereof |
| CN105928684A (en) * | 2016-04-18 | 2016-09-07 | 河海大学 | Deposition rule testing device of debris flow meeting with barrier, and application method of deposition rule testing device |
| CN208383654U (en) * | 2018-06-08 | 2019-01-15 | 浙江工业大学 | A kind of drum-type nonuniform scanning grain sorting experimental rig |
-
2018
- 2018-06-08 CN CN201810584169.4A patent/CN109001083B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3015843U (en) * | 1995-03-15 | 1995-09-12 | 株式会社クワバラ解体 | Debris sorting device |
| GB201415419D0 (en) * | 2014-09-01 | 2014-10-15 | Univ Lancaster | Tracer |
| CN105841920A (en) * | 2016-03-23 | 2016-08-10 | 河海大学 | Riverbed bed load vertical section separating model test device and use method thereof |
| CN105841919A (en) * | 2016-03-23 | 2016-08-10 | 河海大学 | Device for testing movement of solid matter in viscous non-Newtonian fluid and use method thereof |
| CN105928684A (en) * | 2016-04-18 | 2016-09-07 | 河海大学 | Deposition rule testing device of debris flow meeting with barrier, and application method of deposition rule testing device |
| CN208383654U (en) * | 2018-06-08 | 2019-01-15 | 浙江工业大学 | A kind of drum-type nonuniform scanning grain sorting experimental rig |
Non-Patent Citations (1)
| Title |
|---|
| 非均匀推移质颗粒的扩散与分选试验研究;谢玉姝;范念念;刘兴年;;四川大学学报(工程科学版)(05);第58-65页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109001083A (en) | 2018-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109001083B (en) | Roller type non-uniform bed-load particle sorting test device and test method thereof | |
| US8909035B2 (en) | Photography stand | |
| CN1281998C (en) | Projection type figure displayer and optical deflevtor therein | |
| CN212163541U (en) | Shooting distance adjustable three-dimensional photographing device | |
| CN111804601B (en) | Full-automatic machine part vision flaw detection equipment and method | |
| CN104338693B (en) | A kind of shell case detection means | |
| CN105500331A (en) | Multipurpose intelligent camera robot | |
| CN105841920A (en) | Riverbed bed load vertical section separating model test device and use method thereof | |
| CN107186690A (en) | A kind of intelligent robot detected applied to bridge inspection and maintenance | |
| CN116256373A (en) | Perovskite battery film surface defect detection method | |
| CN208383654U (en) | A kind of drum-type nonuniform scanning grain sorting experimental rig | |
| CN209745229U (en) | Plant three-dimensional phenotype measuring device | |
| CN108489874B (en) | Roller type irregular-shaped sediment sorting three-dimensional test device and test method thereof | |
| CN208270377U (en) | A kind of drum-type irregular shape sediment sorting three dimensional taest device | |
| KR20200088594A (en) | Photographing apparatus for 3d image generation | |
| CN86106760A (en) | The projector equipment of the dribbling shaped screen that advertisement is used | |
| CN1048602A (en) | Reflector | |
| CN105021612B (en) | Circuit board double-side detection equipment | |
| CN111986593B (en) | Three-dimensional model-based 3D holographic projection equipment for interactive culture propagation display | |
| US1292149A (en) | Means for producing animated cartoons. | |
| CN211979973U (en) | Swing motion demonstration device | |
| CN113560212A (en) | Online image detection equipment for outer wall of commutator | |
| CN108106724A (en) | A kind of device of simulated solar light source | |
| CN107917916B (en) | Detection method for detecting ellipsoidal glass shell by using two-degree-of-freedom guide rail | |
| CN218511999U (en) | High definition electronic police's light filling lamp performance detection device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |