CN110006792A - A kind of experimental system and method for droplet-particle collision coalescence test - Google Patents
A kind of experimental system and method for droplet-particle collision coalescence test Download PDFInfo
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- CN110006792A CN110006792A CN201910184391.XA CN201910184391A CN110006792A CN 110006792 A CN110006792 A CN 110006792A CN 201910184391 A CN201910184391 A CN 201910184391A CN 110006792 A CN110006792 A CN 110006792A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Abstract
The invention discloses a kind of experimental systems and method for droplet-particle collision coalescence test, the system mainly includes particle feed apparatus, dropproducing devices, particle reclamation device, image variants system, particle feed apparatus realizes the supply of different angle and friction speed particle, dropproducing devices realize drop microfeed and different height adds, particle reclamation device realizes particle and the drop recycling of whereabouts, image variants system realizes particle motion trajectory, the instantaneous of absorption coalescence process after drop deformation and particle and drop meet captures and image analysis.Operation of the present invention is convenient, at low cost, parameters when can accurately control particle and droplet collision, precisely capture particle-droplet collision process, process is sprawled in deformation when record drop absorption captures particle, the collision coalescence research etc. of wet type desulfurizing when suitable for the relevant depositing dust capture of such as wet dust removal, thermal power generation.
Description
Technical field
The present invention relates to granule fluid mechanics fields, are related to a kind of experimental provision, and in particular to one kind is used for droplet-particle
Collide the experimental system and method for coalescence test.
Background technique
With the development in an all-round way of social economy and industrial technology, to further increase production efficiency and quality, for particle
The particle and drop that research with droplet collision obtains more and more concerns, especially microscopic dimensions free movement state touch
It hits droplet in the research of absorption cohesive process, such as research spray for dust suppression and improves dedusting effect in conjunction with the collision of dust particles
Rate.The research of solid particle and drop relates generally to atomizing de-dusting, wet type flotation coal process, spray drying etc..It needs to study solid
Body particle and drop move in space meet after drop to the capture-process of particle；Study under friction speed and size
The change of grain and motion profile after droplet collision；Study deformation process after drop bumps against with particle；Study mechanism of reducing dust by spray.For
Further investigation atomizing de-dusting coalescence mechanism needs to study solid particle and droplet collision cohesive process by experimental observation.
And the experiment porch of existing drop and particles collision, it is most of to concentrate on drop and plane collision, such as invention is specially
Sharp CN104019991A discloses " drop and solid panel angular impact experimental rig ", although the deformation of droplet collision can be observed,
But it is confined to the collision of drop and fixed plate.And the experiment porch of drop and particles collision focuses mostly in the liquid freely dripped
The collision to fixed particle is dripped, and common configuration is complicated, cost of implementation is higher, and precision of research is not high, such as patent of invention
CN108225987A discloses " solving the System and method for that micron order drop hits spherical surface freezing coating " although can be real
Existing drop and solid particle ball hits, but solid particle is in and is fixed state, cannot achieve the free movement of solid particle.
Rarely has the experiment test system of the particle and droplet collision for free movement in the sky at present.
Summary of the invention
The object of the present invention is to provide it is a kind of for droplet-particle collision coalescence test experimental system, build conveniently, at
This is low, can be used for the research of the particle and droplet collision of free movement under different condition.
It is a further object of the present invention to provide the experiment sides that droplet-particle collision coalescence test is carried out based on above system
Method, it is easy to operate.
To achieve the above object, The technical solution adopted by the invention is as follows: it is a kind of for droplet-particle collision coalescence test
Experimental system, mainly include particle feed apparatus, dropproducing devices, particle reclamation device, image variants system,
The particle feed apparatus and dropproducing devices are rack-mount, the bracket include base track, pedestal A, pedestal B,
Fluctuating orbit A, fluctuating orbit B, the pedestal A, pedestal B are respectively arranged in the base track and can move along base track or so
Dynamic, the fluctuating orbit A is vertical on pedestal A, and the fluctuating orbit B is vertical on pedestal B, fluctuating orbit A and lifting
Track B is oppositely arranged,
The particle feed apparatus includes feed hopper, charging slideway, taper storage bin, particle outlet and track deck A, institute
It states feed hopper and is fixed on the top fluctuating orbit A, the lower section of feed hopper is equipped with guide pipe, and the track deck A is set to fluctuating orbit A
It can move up and down above and along fluctuating orbit A, the right upper portion of the track deck A is equipped with one section of groove, and the charging slideway is set
It sets below feed hopper, one end bottom for feeding slideway is equipped with idler wheel, and the roller shaft of idler wheel is stuck in groove, on track deck A
Equipped with charging ramp angle regulating device, the charging ramp angle regulating device includes knob A, one big pulley, two small
Pulley and belt, big pulley are located in the shaft of knob A, and two truckles are located at big pulley two sides, and big pulley and two
A truckle is connected by belt, makes big pulley rotation by rotating knob A, to drive big pulley by the rotation of belt
It is rotated synchronously with two truckles, belt drives idler wheel rotation, and the charging slideway is slidably connected by idler wheel and groove, vertically
Track deck A is equipped with a support plate, and the other end for feeding slideway leans against the upper right side of support plate and protrudes into the taper storing
In storehouse, rotary shaft is equipped on the right side of support plate, the open end of the taper storage bin is fixed on the rotary shaft by bayonet, rotary shaft
One end is fixedly connected with a knob B, and the particle outlet is linked together and communicates with the bottom of taper discharging bin,
The dropproducing devices include syringe needle, needle tubing, needle tubing propulsion tube, rotatable propeller, HeiFin track, track
Deck B, horizontal rail pedestal and WidFin device, the track deck B are set on fluctuating orbit B and can be along fluctuating orbit B
It moves up and down, the horizontal rail pedestal vertical track deck B setting, the WidFin device is set on horizontal rail pedestal
And can be moved left and right along horizontal rail pedestal, left side and the HeiFin track of WidFin device are slidably connected, WidFin
Device is equipped with knob C, and the rotatable propeller, needle tubing propulsion tube, needle tubing, syringe needle are sequentially connected from top to bottom, and rotation promotes
Device and needle tubing propulsion tube are separately fixed on the left of HeiFin track, and the particle reclamation device includes particle-drop recycling ware,
The particle-drop recycling ware is placed in the base track, the underface of collision area,
Described image acquisition and processing system include lighting device, high-speed camera and computer, the lighting device packet
Key lighting lamp A, key lighting lamp B, the key lighting lamp A are included set on the lower part fluctuating orbit A and can be moved up and down along fluctuating orbit A,
The key lighting lamp B is set to the lower part fluctuating orbit B and can move up and down along fluctuating orbit B, and the high-speed camera is set to bracket
Front, the computer are connected with the port of high-speed camera.
Further, the lighting device further includes assist illuminator, and assist illuminator is fixed on the support frame, for mending
Light.
Further, the high-speed camera is supported by tripod.
Further, the edge of the HeiFin track is carved with scale.
The present invention also provides the experimental methods that droplet-particle collision coalescence test is carried out based on above system, including with
Lower step:
(1) particle tested will be needed to pour into feed hopper, particle enters charging slideway by the guide pipe of feed hopper, uniformly
Taper storage bin is fallen into, is dropped out by particle outlet, charging ramp angle is changed by adjusting knob A, passes through adjustable track card
The upper and lower displacement of seat A and knob B change the height and angle of particle outlet, are overregulated particle slide-off angle, enter particle
Specified collision area adjusts to suspend to feed hopper 6 after good position and angle and pours into particle, etc. in tapers storage bin particle it is all sliding
Fall behind and carries out in next step；
(2) appropriate droplet solution to be measured is drawn with needle tubing, installs needle tubing, syringe needle and needle tubing propulsion tube, it is solid by buckling
It is scheduled on the left of HeiFin track, so that needle liquid in pipe is formed drop by syringe needle by rotation rotatable propeller and drips, lead to
The horizontal displacement for overregulating fluctuating orbit B enables drop to instill specified collision area, passes through the upper and lower displacement of adjustable track deck B
Change the speed that drop enters specified collision area；
(3) particle is poured into feed hopper, while rotating rotatable propeller, so that particle and drop are fallen simultaneously, then
By rotating WidFin knob, syringe needle horizontal position is finely tuned, enables and falls drop and particle meets in collision area
Collision, at the same open key lighting lamp A32, key lighting lamp B33 and adjust to collision area isometry position, utilize high-speed camera
The entire collision process that meets of shooting, then by computer software post-processing editor, collision cohesive process is picked out in acquisition
Image forms particle-droplet collision coalescence process.
Compared with prior art, the invention has the following beneficial effects:
(1) experimental method and system of the droplet-particle collision coalescence test designed through the invention, can obtain in weight
Particle-droplet collision behavior under power and air drag effect.
(2) particle device can add not in the experimental method and system of the test of droplet-particle of the invention collision coalescence
Same material, different shape, different sized particles, adjust particle friction speed, different angle, and the adjustable particle units time produces
Raw quantity,
(3) dropproducing devices can add in the experimental method and system of the test of droplet-particle of the invention collision coalescence
The solution for adding different solvents and solute, different ratio, can produce different sizes, the drop of unit time different number, can be with
It generates and enters collision area friction speed, the drop of different location.
(4) the image variants system that experimental system uses in the present invention, the dynamic of available particle and drop
Process obtains the motion profile of particle and drop, can completely capture particle-droplet collision cohesive process, and pass through software
The correlated results such as track change, drop deformation process after obtaining particle-droplet collision speed, collision are post-processed, to collide coalescence
Mechanism study provides sufficiently effective data supporting.
Detailed description of the invention
Fig. 1 is the experimental system schematic diagram that the present invention collides coalescence test for droplet-particle；
Fig. 2 is particulate charge schematic device；
Fig. 3 is charging slideway top view；
Fig. 4 is drop generating device schematic diagram；
Fig. 5 is that particle-droplet collision coalescence process shoots photo；
In figure, 1- base track, 2- pedestal A, 3- pedestal B, 4- fluctuating orbit A, 5- fluctuating orbit B, 6- feed hopper, 7- into
Expect slideway, 8- taper storage bin, 9- particle outlet, 10- track deck A, 11- guide pipe, 12- groove, 13- idler wheel, 14- knob
A, the big pulley of 15.1-, 15.2- truckle, 16- belt, 17- support plate, 18- rotary shaft, 19- knob B, 20- syringe needle, 21- needle
Pipe, 22- needle tubing propulsion tube, 23- rotatable propeller, 24- HeiFin track, 25- track deck B, 26- horizontal rail pedestal,
27- WidFin device, 28- knob C, 29- scale, 30- collision area, 31- particle-drop recycle ware, 32- key lighting lamp
A, 33- key lighting lamp B, 34- computer, 35- high-speed camera, 36- tripod, 37- assist illuminator, 38- support frame, 39-
Buckle.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.For convenience of description, in Fig. 1
Left side is a left side, and the right side in Fig. 1 is the right side, the benchmark as left and right directions judgement.
As shown in Figure 1, a kind of experimental system for droplet-particle collision coalescence test of the invention, main includes
Grain feedway, dropproducing devices, particle reclamation device, image variants system, the particle feed apparatus and liquid
Drop generation device is rack-mount, and the bracket includes base track 1, pedestal A2, pedestal B3, fluctuating orbit A4, lift rail
Road B5, the pedestal A2, pedestal B3 are respectively arranged in the base track 1 and can move left and right along base track 1, the lifting
Track A4 is vertical on pedestal A2, and the fluctuating orbit B5 is vertical on pedestal B3, fluctuating orbit A4 and fluctuating orbit B5
It is oppositely arranged.
As shown in Figure 1, Figure 2, Figure 3 shows, the particle feed apparatus include feed hopper 6, charging slideway 7, taper storage bin 8,
Particle outlet 9 and track deck A10, the feed hopper 6 are fixed on the top fluctuating orbit A4, and the lower section of feed hopper 6 is equipped with guiding
Pipe 11, the track deck A10 are set on fluctuating orbit A4 and can move up and down along fluctuating orbit A4, the track deck A10
Right upper portion be equipped with one section of groove 12, the charging slideway 7 is arranged below feed hopper 6, and one end bottom for feeding slideway 7 is set
There is idler wheel 13, the roller shaft of idler wheel 13 is stuck in groove 12, and track deck A10 is equipped with charging ramp angle regulating device, institute
Stating charging ramp angle regulating device includes knob A14, one big 15.1, two truckles 15.2 of pulley and belt 16, is slided greatly
Wheel 15.1 is located in the shaft of knob A14, and two truckles 15.2 are located at big 15.1 two sides of pulley, and big pulley 15.1 with
Two truckles 15.2 are connected by belt 16, rotate big pulley 15.1 by rotating knob A14, to pass through belt 16
Rotation drives big pulley 15.1 and two truckles 15.2 to rotate synchronously, and belt 16 drives idler wheel 13 to rotate, the charging slideway
6 are slidably connected by idler wheel 13 with groove 12, and vertical track deck A10 is equipped with a support plate 17, and the other end for feeding slideway 7 is oblique
It leans against the upper right side of support plate 17 and protrudes into the taper storage bin 8, rotary shaft 18, the taper are equipped on the right side of support plate 17
The open end of storage bin 8 is fixed in rotary shaft 18 by bayonet, and 18 one end of rotary shaft is fixedly connected with a knob B19, described
Particle outlet 9 is linked together and communicates with the bottom of taper discharging bin 8.The particle tested will be needed to pour into feed hopper by small spoon
6, for particle diameter within the scope of 0.5~5mm, particle enters charging slideway 7 by the guide pipe 11 of feed hopper 6, uniformly falls into
Taper storage bin 8 is dropped out by particle outlet 9, and particle is sent into specified collision area 30.By changing different feed hoppers 6
Spout of funnel size change the unit time in enter charging slideway 7 amounts of particles, pass through adjusting knob A16 change charging slideway
7 angle, and then change the amounts of particles for entering collision area 30 in the unit time.It can change by adjusting knob B19
The height and angle of grain outlet 9, and then velocity magnitude and direction when the homeposition of change particle, arrival collision area 30.
As Figure 1 and Figure 4, the dropproducing devices include syringe needle 20, needle tubing 21, needle tubing propulsion tube 22, rotation propulsion
Device 23, HeiFin track 24, track deck B25, horizontal rail pedestal 26 and WidFin device 27, the track deck
B25 is set on fluctuating orbit B5 and can move up and down along fluctuating orbit B5, the 26 vertical track deck B25 of horizontal rail pedestal
Setting, the WidFin device 27 are set on horizontal rail pedestal 26 and can move left and right along horizontal rail pedestal 26, horizontal
Micromatic setting 27 is equipped with knob C28, and left side and the HeiFin track 24 of WidFin device 27 are slidably connected, the rotation
Propeller 23, needle tubing propulsion tube 22, needle tubing 21, syringe needle 20 are sequentially connected from top to bottom, rotatable propeller 23 and needle tubing propulsion tube
22 are fixed on 24 left side of HeiFin track by buckle 39 respectively, and the edge of HeiFin track 24 is carved with scale 29.It will
Testing liquid inspiration needle tubing 21 installs needle tubing 21, syringe needle 20 and needle tubing propulsion tube 22.By the level for adjusting fluctuating orbit B5
The upper and lower displacement of displacement and track deck B25, is adjusted to suitable height for syringe needle 20, makes needle by rotating rotatable propeller 23
Liquid forms drop by syringe needle 20 and drips in pipe 21.It can produce various sizes of drop, drop by replacing syringe needle 20
Diameter is within the scope of 0.5~3mm；It can change the speed of the drop into collision area 30 by adjusting 21 height of needle tubing；
Speed by changing piston rod of syringe 23 can change the amount of droplets into collision area 30；It can by adjusting knob C28
To realize the fine tuning of 21 horizontal direction of needle tubing.
As shown in Figure 1, the particle reclamation device includes particle-drop recycling ware 31, the particle-drop recycles ware 31
It is placed in the base track 1, the underface of collision area 30, for recycling the particle and drop that fall.
Described image acquisition and processing system include lighting device, high-speed camera and computer, the lighting device packet
Key lighting lamp A32, key lighting lamp B33 are included, the key lighting lamp A32 is set to the lower part fluctuating orbit A4 and can be along fluctuating orbit A4
Lower movement, the key lighting lamp B33 is set to the lower part fluctuating orbit B5 and can move up and down along fluctuating orbit B5, by adjusting main photograph
The holder angle of the height and headlamp of bright lamp A32 and key lighting lamp B33 adjusts light source；The lighting device further includes auxiliary
Headlamp 37 is helped, assist illuminator 37 is fixed on support frame 38, is used for light filling.Before the high-speed camera 35 is set to bracket
Side, the computer 34 are connected with the port of high-speed camera 35, and wherein high-speed camera 35 is propped up with dedicated tripod 36
Support is used for Image Acquisition, and computer 34 is for controlling high-speed camera 35 and experimental data post-processing.By special on computer 34
Determine software to be configured take pictures frequency, number of taking pictures, the start and end time of taking pictures of high-speed camera 35, so that shooting obtains
Required picture.
Specific operating process is as follows:
(1) particle tested will be needed to pour into feed hopper 6 by small spoon, particle is entered by the guide pipe 11 of feed hopper 6
Slideway 7 is fed, taper storage bin 8 is uniformly fallen into, is dropped out by particle outlet 9, charging slideway 7 is changed by adjusting knob A16
Angle changes the height and angle of particle outlet 9 by the upper and lower displacement of adjustable track deck A10 and knob B19, through overregulating
Particle slide-off angle makes particle enter specified collision area 30, adjusts to suspend after good position and angle and pour into feed hopper 6
Grain, etc. carry out in next step after particle all slides in tapers storage bin 8；
(2) appropriate droplet solution to be measured is drawn with needle tubing 20, installs needle tubing 21, syringe needle 20 and needle tubing propulsion tube 22, led to
It crosses buckle 39 and is fixed on 24 left side of HeiFin track, so that liquid in needle tubing 21 is passed through syringe needle 20 by rotating rotatable propeller 23
It forms drop and drips, the horizontal displacement by adjusting fluctuating orbit B5 enables drop to instill specified collision area 30, passes through tune
The upper and lower displacement for saving track deck B25 changes the speed that drop enters specified collision area 30；
(3) particle is poured into feed hopper 6, while rotating rotatable propeller 23, so that particle and drop are fallen simultaneously, so
Afterwards by rotation WidFin knob 28,20 horizontal position of syringe needle is finely tuned, enables and falls drop and particle in collision area
It meets in 30 collision, while opening key lighting lamp A32, key lighting lamp B33 and adjusting and arriving and 30 isometry position of collision area, utilize
High-speed camera 35 shoots the collision process that entirely meets, and then by 34 software post-processing editor of computer, acquisition is picked out
The image (as shown in Figure 5) of cohesive process is collided, particle-droplet collision coalescence process is formed.
Particle and liquid drop speed for entering collision area 30 are being collided in 35 lens direction of face high-speed camera
Vertical scale ruler is placed in region 30, passes through the particle or drop position scale phase on 2~5 photograph frame of high-speed camera
Subtract, obtain distance L, time interval t between every frame picture is then obtained by high-speed camera operation sequence, it is assumed that calculates n frame
Scale between photo.The speed v of so particle or drop may be calculated: v=L/ (nt).
Claims (5)
1. a kind of experimental system for droplet-particle collision coalescence test, which is characterized in that mainly include particle supply dress
It sets, dropproducing devices, particle reclamation device, image variants system, the particle feed apparatus and drop generate dress
Set rack-mount, the bracket includes base track (1), pedestal A (2), pedestal B (3), fluctuating orbit A (4), lift rail
Road B (5), the pedestal A (2), pedestal B (3) are respectively arranged on the base track (1) and can move along base track (1) left and right
Dynamic, the fluctuating orbit A (4) is vertical on pedestal A (2), and the fluctuating orbit B (5) is vertical on pedestal B (3), lifting
Track A (4) and fluctuating orbit B (5) are oppositely arranged；
The particle feed apparatus includes feed hopper (6), charging slideway (7), taper storage bin (8), particle outlet (9) and track
Deck A (10), the feed hopper (6) are fixed on fluctuating orbit A (4) top, and the lower section of feed hopper (6) is equipped with guide pipe (11),
The track deck A (10) is set on fluctuating orbit A (4) and can move up and down along fluctuating orbit A (4), the track deck A
(10) right upper portion is equipped with one section of groove (12), and charging slideway (7) setting is fed slideway (7) below feed hopper (6)
One end bottom be equipped with idler wheel (13), idler wheel (13 roller shaft be stuck in groove (in 12, track deck A (10) be equipped with charging slide
Road angle adjustment device, the charging ramp angle regulating device includes knob A (14), one big pulley (15.1), two small
Pulley (15.2) and belt (16), big pulley (15.1) are located in the shaft of (14) knob A, two truckles (15.2) difference positions
In big pulley (15.1) two sides, and (15.2 are connect big pulley (15.1) by belt (16), are revolved by rotation with two truckles
Button A (14) rotates big pulley (15.1), to pass through the rotation of belt (16), drives big pulley (15.1) and two truckles
(15.2) it rotates synchronously, belt (16) drives idler wheel (13) rotation, and the charging slideway (6) passes through idler wheel (13) and groove (12)
It is slidably connected, vertical track deck A (10) is equipped with a support plate (17), and the other end of charging slideway (7) leans against support plate
(17) upper right side simultaneously protrudes into the taper storage bin (8), is equipped with rotary shaft (18) on the right side of support plate (17), the taper storage
The open end of feed bin (8) is fixed on rotary shaft (18) by bayonet, and rotary shaft (18) one end is fixedly connected with a knob B
(19), the particle outlet (9) is linked together and communicates with the bottom of taper discharging bin (8)；
The dropproducing devices include syringe needle (20), needle tubing (21), needle tubing propulsion tube (22), rotatable propeller (23), vertical
Finely tune track (24), track deck B (25), horizontal rail pedestal (26) and WidFin device (27), the track deck B
(25) it is set on fluctuating orbit B (5) and can be moved up and down along fluctuating orbit B (5), horizontal rail pedestal (26) vertical track
Deck B (25) setting, the WidFin device (27) are set on horizontal rail pedestal (26) and can be along horizontal rail pedestals
(26) it moves left and right, WidFin device (27) is equipped with knob C (28), the left side of WidFin device (27) and HeiFin
Track (24) is slidably connected, and the rotatable propeller (23), needle tubing propulsion tube (22), needle tubing (21), syringe needle (20) are from top to bottom
It is sequentially connected, rotatable propeller (23) and needle tubing propulsion tube (22) are separately fixed on the left of HeiFin track (24)；
The particle reclamation device includes particle-drop recycling ware (31), and the particle-drop recycling ware (31) is placed on described
In base track (1), the underface of collision area (30)；
Described image acquisition and processing system include lighting device, high-speed camera and computer, and the lighting device includes master
Headlamp A (32), key lighting lamp B (33), the key lighting lamp A (32) are set to (4) lower part fluctuating orbit A and can be along fluctuating orbits
A (4) is moved up and down, and the key lighting lamp B (33) is set to (5) lower part fluctuating orbit B and can move up and down along fluctuating orbit B (5),
The high-speed camera (35) is set in front of bracket, and the computer (34) connects with the port of high-speed camera (35).
2. a kind of experimental system for droplet-particle collision coalescence test according to claim 1, which is characterized in that
The lighting device further includes assist illuminator (37), and assist illuminator is fixed on support frame (38).
3. a kind of experimental system for droplet-particle collision coalescence test according to claim 1, which is characterized in that
The high-speed camera (35) is supported by tripod (36).
4. a kind of experimental system for droplet-particle collision coalescence test according to claim 1, which is characterized in that
It is carved with scale (29) in the edge of the HeiFin track (24).
5. a kind of side for carrying out droplet-particle collision coalescence test based on the described in any item experimental systems of Claims 1-4
Method, which comprises the following steps:
(1) particle tested will be needed to pour into feed hopper (6) by small spoon, particle pass through the guide pipe (11) of feed hopper (6) into
Enter to feed slideway (7), uniformly fall into taper storage bin (8), dropped out by particle outlet (9), is changed by adjusting knob A (14)
Slideway (7) angle is fed, changes the height of particle outlet (9) by the upper and lower displacement of adjustable track deck A (10) and knob B (19)
Degree and angle, are overregulated particle slide-off angle, enter particle specified collision area (30), after adjusting good position and angle temporarily
Stop pouring into particle to feed hopper (6), etc. carry out in next step after particle all slides in tapers storage bin (8)；
(2) appropriate droplet solution to be measured is drawn with needle tubing (20), installs needle tubing (21), syringe needle (20) and needle tubing propulsion tube
(22), it is fixed on the left of HeiFin track (24) by buckle (39), makes needle tubing (21) by rotating rotatable propeller (23)
Interior liquid forms drop by syringe needle (20) and drips, and so that drop is instilled by the horizontal displacement of adjusting fluctuating orbit B (5) and refers to
Determine collision area (30), drop is changed by the upper and lower displacement of adjustable track deck B (25) and enters specified collision area (30)
Speed；
(3) particle is poured into in feed hopper (6), while rotates rotatable propeller (23), so that particle and drop are fallen simultaneously, so
Afterwards by rotation WidFin knob (28), syringe needle (20) horizontal position is finely tuned, is enabled and is fallen drop and particle and colliding
It meets in region (30) collision, while opening key lighting lamp A (32), key lighting lamp B (33) and adjusting and arriving and collision area (30)
Isometry position shoots the collision process that entirely meets using high-speed camera (35), then by computer (34) the software later period
The image of collision cohesive process is picked out in reason editor, acquisition, forms particle-droplet collision coalescence process.
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| CN201910184391.XA CN110006792B (en) | 2019-03-12 | 2019-03-12 | Experiment system and method for liquid drop-particle collision coalescence test |
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| CN201910184391.XA CN110006792B (en) | 2019-03-12 | 2019-03-12 | Experiment system and method for liquid drop-particle collision coalescence test |
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| CN110006792B CN110006792B (en) | 2020-04-14 |
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| CN111413336A (en) * | 2020-03-13 | 2020-07-14 | 安阳工学院 | Drop bounce test device and test method thereof |
| CN111504598A (en) * | 2020-04-10 | 2020-08-07 | 电子科技大学 | Experimental device for promoting liquid drop impact splashing and application thereof |
| CN113740212A (en) * | 2021-08-26 | 2021-12-03 | 西南交通大学 | Apparatus, system and method for studying nucleation and growth of particles in wet granulation |
| CN114279907A (en) * | 2021-12-14 | 2022-04-05 | 中国科学院地质与地球物理研究所 | Nondestructive screening system and method for lunar dust particle sample |
| CN114397231A (en) * | 2022-01-21 | 2022-04-26 | 中国矿业大学 | Visual test device and method for adhesion and desorption of wet particles in gas-solid two-phase flow |
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