CN110530603A - Low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability are observed and hit wall pilot system and method - Google Patents
Low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability are observed and hit wall pilot system and method Download PDFInfo
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Abstract
The present invention discloses a kind of low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability observation and hits wall pilot system and method, including sealing drop generating means, cooling device, pressure control device, Information Collecting & Processing device, pass through piping connection between each device；The liquid form of low boiling point high volatile medium is maintained by the low temperature environment of the Platform Designing, and single drop is generated under atmospheric pressure environment, the operating environment in the misting coolings modes such as practical laser operation misting cooling is simulated to the utmost, is more in line with actual conditions；Can under normal temperature and pressure environment to this class I liquid I list drips during evaporation characteristic study, to better grasp the drippage characteristic of practical drop, provide reference data for the numerical simulation of misting cooling；The kinetic characteristics that this class I liquid I list drop hits solid plate can be accurately analyzed, the shock mechanism that the cooling drop of this kind of liquid spray hits heating surface is more in depth understood.
Description
Technical field
The invention belongs to the vapo(u)rability observation in drop formation, drip process and hit wall pilot system field, and in particular to
A kind of low boiling point high volatile medium drop formation, vapo(u)rability observation and hits wall pilot system and method under atmospheric pressure environment.
Background technique
It evaporation in spray droplet flight course and hits wall phenomenon and is widely present in spray burning, misting cooling, spraying dry
The technical fields such as dry and inkjet printing.Wherein, misting cooling refers to continuous liquid working medium, by high pressure gas or pressure itself
After nozzle atomization is at fine drop, it is ejected into heating part surface, the cold of heat is taken away by single-phase or two-phase heat transfer mechanism
But mode has the spies such as heat-sinking capability is strong, heat transfer temperature difference is small, working medium circulation amount is small, no boil hysteresis quality, cooling uniformity are good
Point is the effective means for solving high heat flux density heat dissipation problem, cooling in electronic component, laser surgey misting cooling etc.
Application become increasingly conspicuous, the exchange capability of heat and heat exchange efficiency for how improving misting cooling are a current research hotspots.Low boiling
Point high volatile medium misting cooling is a sufficiently complex physical process, comprising flash atomization, the breakup of drop, evaporation, is gathered
Many processes such as conjunction, collision are related to the multi-crossed disciplines such as unequilibrium thermodynamics, droplet dynamics, heat and mass, multiphase flow hardly possible
Point problem.Although having obtained Preliminary Applications in practical applications, correlation theory research is still immature, also fails to from theory
The essence of upper announcement process can not meet the needs of commercial plant exploitation and design well.Due to spray droplet group motion power
It learns and the complexity and particularity of thermodynamic behavior, dynamics and heating power scholarship and moral conduct of the researcher generally directed to single drop in spraying
To conduct a research.Single behavioral trait and kinetics mechanism drop evaporation and hit wall is grasped, can be the evaporation of spray droplet group
Characteristic is to provide basic physics model and data with wallflow is hit, and has important research meaning.
In fact, low boiling point high volatile medium misting cooling is in laser skin medical skin cooling protection and high-power core
Piece efficient cryogenic field of radiating has important practical application.By taking dermatosis trea as an example, pulse laser treats nevus flammeus
The purpose of (port wine stain, PWS) is so that the thermal damage in target blood is reached maximum, and avoid injuring thereon just
Normal epidermis.But for most of lesion, the threshold value laser dosage of epidermis injury is likely lower than to reach dispels PWS lesion completely
Dosage.Meanwhile in laser lipolysis therapeutic process, buries deeper or bigger volume cellulite and need higher laser energy
Amount is to melt, but excessively high energy may result in the thermal damage of the normal skin tissues such as epidermis.Since laser energy is limited
System, need to carry out longer operation time.Meanwhile epidermis and dermal temperature are not to be exceeded 47 DEG C, otherwise will lead to skin and burn
The complication such as wound or bubble.It can effectively be solved the above problems using the cooling of low boiling point refrigerant Dynamic spraying, in laser hand
Cold protection is carried out to epidermis and corium in art therapeutic process, reduces the irreversible thermal damage of skin and blood vessel.Laser surgey at present
The low boiling points high volatile liquid such as R134a is often used in misting cooling, this class I liquid I is stored up in laboratory with normal temperature high voltage
It is stored in refrigerant cylinder of steel, if directly opening high pressure valve, highly pressurised liquid is directly entered atmospheric pressure environment, in biggish differential pressure action
It is lower to be formed by spraying, single drop can not be generated；
In order to generate single drop of low boiling point high volatile medium, a kind of method is that highly pressurised liquid is allowed to enter and storage pressure
Similar high back pressure closed environment adjusts the pressure of the two, so that highly pressurised liquid is under small pressure difference into high-pressure sealed
Cavity generates single drop.But this method for generating single drop using high back pressure airtight cavity, it is more demanding to equipment pressure resistance,
On the one hand drop formation visual inspection difficult to realize sets system if opening up visualization window in high back pressure airtight cavity
Meter, processing and manufacturing become sufficiently complex, and another aspect high-pressure gas container opens up visualization window, and huge peace can be brought to operation
Full hidden danger, once visualization glass rupture can set off an explosion.Simultaneously because high-pressure sealed cavity size limitation, to its small single liquid
Drop generate with hit wall surface observation is very limited, cannot realize to drop vapo(u)rability it is continuous it is real-time observation with greatly apart from liquid
Drip higher-speed impacts wall surface dynamics research；Meanwhile the volatilization of drop is influenced under hyperbaric environment, it is practical normal to be unfavorable for later period simulation
The dissipation during drips and volatilization situation on a solid surface are probed under pressure ring border.In view of existing single liquid
It drips the drawbacks of testing and its is difficult to generate single drop under atmospheric pressure environment, so as to liquid evaporation and power under its atmospheric pressure environment
Research is learned to become difficult.
Summary of the invention
The purpose of the present invention is to provide a kind of low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rabilities to observe
With hit wall pilot system and method, it is volatile under atmospheric pressure environment for solving low boiling point high volatile liquid, under hyperbaric environment
Equipment requirement is high, it is difficult to realize to low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability observation and hit wall and grind
Study carefully.
To achieve the goals above, the present invention adopts the following technical scheme:
Low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability observation are tested with wall is hit, including sealing drop
Generating means, cooling device, pressure control device and Information Collecting & Processing device；
Sealing drop generating means includes sealing flow container, and sealing flow container top is equipped with refrigerant cut-in valve, micro-air tune
Valve, cooling tube access port and cooling tube exit are saved, refrigerant cut-in valve seals flow container by the first piping connection refrigerant tank
Lower part is equipped with pressure sensor, temperature sensor and syringe needle, and vacuum tank is equipped with outside sealing flow container, and vacuum tank is equipped with vacuum tank
Extraction valve；
Cooling device includes cryostat and cooling tube, and cryostat is equipped with inlet valve and liquid outlet valve；It is cold
But pipe is located inside sealing flow container；One end of one end connection cooling tube access port of cooling tube, the other end connection of cooling tube are cold
But one end of pipe exit；Inlet valve is connected outside sealing flow container with the other end of cooling tube access port by third pipeline
It connects；Liquid outlet valve is connect outside sealing flow container with the other end of cooling tube exit by the 4th pipeline；Cooling tube and low temperature
Insulating box constitutes the circulatory system；
Pressure control device includes micro syringe and outside air balanced valve, and syringe passes through the second pipeline and micro sky
The connection of gas regulating valve, outside air balanced valve are set on vacuum tank, are passed through inside sealing flow container；
Information Collecting & Processing device includes movable high-speed camera, fixation high-speed camera, movable lighting system, consolidates
Determine lighting system, photoelectric sensor and the surface of solids, photoelectric sensor and the surface of solids are set in turn in below syringe needle.
Further improve is that syringe needle is mounted at sealing flow container lower part, and syringe needle is equipped with valve.
Further improve be, sealing flow container is cylindrical enclosure cylinder of steel, operating temperature range: -100 DEG C~100 DEG C,
Pressure-resistant range: 0MPa~10Mpa.
Further improve is that pressure control device further includes syringe rack and syringe pump, and syringe is installed on note
On emitter rack；The syringe pump is for driving syringe.
Further improve is that Information Collecting & Processing device further includes camera system movable support, lighting system activity
The mobile bracket of bracket, surface of solids electric three-dimensional and computer；The movable high-speed camera and fixed high-speed camera installation
In on camera system movable support, being placed in surface of solids side, movable high-speed camera can be by camera system movable support
Regulation moves up and down；The movable lighting system and fixed light system are installed on lighting system movable support, and
Be placed in the surface of solids other side, movable lighting system can with the regulation of lighting system movable support movable high-speed camera
It moves up and down；Before the surface of solids progress up and down that it is installed above is adjusted in the mobile bracket of the surface of solids electric three-dimensional
After move left and right, adjust the drippage distance and dripping position of drop；The computer is taken the photograph with photoelectric sensor, movable high speed respectively
Camera is connected with fixed high-speed camera, and is controlled by the input signal of photoelectric sensor the unlatching of high-speed camera.
Further improve be, the surface of solids is equipped with square bulge-structure, pyramidal structure, fin-shaped micro-channel structure, more
One of structure that microcellular structure and micropore are combined with fin structure is a variety of.
Further improve is, equipped in refrigerant R134a, R404A, R407C, R410A and R32 in refrigerant tank
It is a kind of.
Further improve is, heat insulating coat is coated with outside vacuum tank；Outside first pipeline, third pipeline and the 4th pipeline
Portion is enclosed with thermal insulation material.
Low boiling point high volatile medium normal pressure drop formation and hit wall test method, comprising the following steps:
When beginning, cryogen cut-in valve, micro-air regulating valve, outside air balanced valve, vacuum tank extraction valve, feed liquor are kept
Mouth valve and liquid outlet valve are in off state, and will first seal flow container and vacuum tank passes through outside air balanced valve respectively and vacuum tank is taken out
Air valve vacuumizes, and is then shut off outside air balanced valve and vacuum tank extraction valve, opens refrigerant cut-in valve, refrigerant is passed through
To inside sealing flow container, refrigerant cut-in valve is closed；Cooling device outside starting absorbs cryostat by cooling tube
Seal the heat inside flow container；Outside air balanced valve is opened, detects sealing fluid pot bottom meter pressure using pressure sensor, when
When base pressure and external air pressure maintain an equal level, outside air balanced valve is closed, micro-air regulating valve is opened, uses micro note
It penetrates pump control syringe and injects air into sealing flow container；Sealing flow container internal pressure is adjusted, makes to seal flow container inside and extraneous shape
After micro pressure difference, syringe needle is opened, drop is extruded from syringe needle using sealing flow container internal and external pressure difference, is realized under atmospheric pressure environment
Single drop formation of low boiling point high volatile liquid；
When drop is from syringe needle, by triggering photoelectric sensor when photoelectric sensor, photoelectric sensor believes drips
Computer number is passed to, computer controls fixed high-speed camera shooting and generates the initial configuration of drop, while controlling movable high speed
Video camera shoots the droplet morphology in drip process；Movable high-speed camera is adjusted by camera system movable support
It moves up and down, shoots the evaporation situation of different location in same droplet drip process, while drop hits the drop of the surface of solids
Dynamic behavior is shot.
Compared with the existing technology, the invention has the following advantages:
1, its liquid form is maintained by the low temperature environment of the Platform Designing, and generates single drop, pole under atmospheric pressure environment
Operating environment in the misting coolings modes such as limits simulation practical laser operation misting cooling, is more in line with practical feelings
Condition can accurately analyze the kinetic characteristics that this class I liquid I list drop hits solid plate, more in depth understand this class I liquid I
Misting cooling drop hits the shock mechanism of heating surface, for this kind of theory nature using low boiling point high volatile nanospray experiment
It all has a very important significance with radiating efficiency promotion, is provided more for the commercial plant research and development of this kind of research and software design
Actual reference；
2, syringe needle is detachably connected sealing flow container, obtains the drop of adjustable size by replacement syringe needle, sets on syringe needle
There is valve to control the start and stop of drop generation；
3, it is all around moved up and down by adjusting bracket, preferably controls the drop point site and dropleting speed of drop；
4, the Information Collecting & Processing device that the present invention utilizes, passes through photoelectric sensor, computer and high-speed motion picture camera three's phase
Connection, using photoelectric sensor by the control program in the drippage signal feedback to the computer of drop, and it is real-time to pass through control program
The start and stop of high-speed motion picture camera are controlled, it is simple and convenient, improve the efficiency of photo finishing；
5, when adjusting drippage of the surface of solids upper and lower position to control drop by the mobile bracket of surface of solids electric three-dimensional
Between and distance, the droplet morphology of different location during drips is shot by adjusting movable high-speed camera, thus solely
The evaporation characteristic under normal pressure and temperature environment during low boiling point high volatile list drips is obtained invasively.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of low boiling point high volatile medium atmospheric pressure environment drop formation of the present invention, vapo(u)rability observation and hits wall examination
The structure chart of check system；
Fig. 2 is sealing drop generating means sectional view；
Wherein: 1 sealing flow container, 2 vacuum tanks, 3 refrigerant cut-in valves, 4 micro-air regulating valves, 5 outside air balanced valves,
6 cooling tube access ports, 7 cooling tube exits, 8 pressure sensors, 9 temperature sensors, 10 syringe needles, 11 refrigerant tanks, 12 solids
Surface electric three-dimensional moves bracket, 13 micro-injection pumps, 14 syringe racks, 15 syringes, 16 cryostats, 17 coolings
Pipe, 18 inlet valves, 19 liquid outlet valves, 20 movable high-speed cameras, 21 photoelectric sensors, 22 camera system movable supports,
23 surfaces of solids, 24 computers, 25 vacuum tank extraction valves, 26 fixed light systems, 27 fixed high-speed cameras, 28 camera systems are living
Dynamic bracket, 29 movable high-speed cameras, the first pipeline of a, the second pipeline of b, c third pipeline, the 4th pipeline of d.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
Following detailed description is exemplary explanation, it is intended to provide further be described in detail to the present invention.Unless another
It indicates, all technical terms of the present invention contain with the normally understood of the application one of ordinary skill in the art
Justice is identical.Term used in the present invention is merely to describe specific embodiment, and be not intended to limit according to the present invention
Illustrative embodiments.
It please refers to shown in Fig. 1, Fig. 2, the present invention provides a kind of low boiling point high volatile medium atmospheric pressure environment drop formation, steams
Hair property is observed and is hit at wall pilot system, including sealing drop generating means, cooling device, pressure control device and information collection
Manage device；
Sealing drop generating means includes sealing flow container 1, and sealing 1 top of flow container is equipped with refrigerant cut-in valve 3, micro-air
Regulating valve 4, cooling tube access port 6 and cooling tube exit 7, refrigerant cut-in valve 3 pass through the first pipeline a connection refrigerant tank
11, sealing 1 lower part of flow container is equipped with pressure sensor 8, temperature sensor 9 and syringe needle 10, seals and is equipped with vacuum tank 2 outside flow container 1,
Vacuum tank 2 is equipped with vacuum tank extraction valve 25；
Cooling device includes cryostat 16 and cooling tube 17, and cryostat 16 is equipped with inlet valve 18 and out liquid
Mouth valve 19, cooling tube 17 are linked into inside sealing flow container by cooling tube access port 6 and cooling tube exit 7, inlet valve 18
With liquid outlet valve 19 respectively by third pipeline c and the 4th pipeline d seal flow container outside with cooling tube access port 6 and cooling tube
Exit 7 connects, and cooling tube 17 and cryostat 16 is made to constitute the circulatory system；
Pressure control device includes micro-injection pump 13, syringe 15 and outside air balanced valve 5, and syringe 15 passes through the
Two pipeline b are connect with micro-air regulating valve 4, and outside air balanced valve 5 is set on vacuum tank 2；
Information Collecting & Processing device includes movable high-speed camera, fixation high-speed camera, movable lighting system, consolidates
It is electronic to determine lighting system, photoelectric sensor, the surface of solids, lighting system movable support, camera system movable support, the surface of solids
The mobile bracket of three-dimensional and computer, photoelectric sensor and the surface of solids are set in turn in below syringe needle, and computer is taken the photograph with movable high speed
Camera, fixed high-speed camera are connected with photoelectric sensor.
A kind of low boiling point high volatile medium atmospheric pressure environment drop formation of the present invention, vapo(u)rability are observed and hit wall pilot system
Test method it is as follows:
When on-test, each valve is kept to be in off state, will first seal flow container 1 and vacuum tank 2 respectively by external empty
Gas balanced valve 5 and vacuum tank extraction valve 25 vacuumize, and are then shut off outside air balanced valve 5 and vacuum tank extraction valve 25, open
Appropriate refrigerant is passed into inside sealing flow container 1, closes refrigerant cut-in valve 3 by refrigerant cut-in valve 3；It is cold outside starting
But device makes cryostat 16 absorb the heat inside sealing flow container by cooling tube 17, uses the temperature of sealing fluid pot bottom
It spends sensor 9 and detects its internal temperature variations, reaching reduction sealing flow container internal temperature makes refrigerant liquefaction and reduction
Seal the purpose of flow container air pressure inside；Outside air balanced valve 5 is opened, is detected using the pressure sensor 8 of sealing fluid pot bottom
Sealing fluid pot bottom meter pressure closes outside air balanced valve 5 when base pressure and fair external air pressure, opens micro-
Air control valve 4 is measured, syringe 15 is controlled using micro-injection pump 13 and injects air into sealing flow container, trace regulation seals flow container
1 internal pressure makes to seal inside flow container and after the extraneous micro pressure difference of formation, opens syringe needle 10, utilize external pressure in sealing flow container 1
Power difference extrudes drop from syringe needle 10, realizes single drop formation of low boiling point high volatile liquid under atmospheric pressure environment.
A kind of low boiling point high volatile medium atmospheric pressure environment drop formation of the present invention, vapo(u)rability observation are with wall test is hit
System, research object are the low boiling point working medium that saturation temperature is lower than room temperature environment under normal pressure, and low boiling point high volatile medium is refrigeration
One of agent R134a, R404A, R407C, R410A and R32.
In conjunction with following drawings, the present invention is further illustrated by example.
It please refers to shown in Fig. 1 and Fig. 2, a kind of low boiling point high volatile medium atmospheric pressure environment drop formation of the present invention, evaporation
Property observation with hit wall pilot system, which includes sealing drop generating means, and cooling device, pressure control device, information adopts
Collect processing unit, the convenient life of single drop of low boiling point high volatile liquid medium under atmospheric pressure environment is realized in each cooperative system operation
At being studied with wall dynamic behavior is hit the evaporation characteristic in such medium list drop at normal temperatures and pressures drip process.
Specifically, by the first pipeline a and sealing 1 top of flow container by refrigerant tank 11 in sealing drop generating means
Refrigerant cut-in valve 3 is connected, and the gap sealed between 1 inside of flow container and vacuum tank 2 and sealing flow container 1 is passed through external sky respectively
After gas balanced valve 5 and vacuum tank extraction valve 25 vacuumize, low boiling point high volatile refrigerant is injected inside flow container 1 to sealing, and
The injection rate of refrigerant is controlled by the refrigerant cut-in valve 3 at top；By 1 internal temperature of cooling device coolant seal flow container, wherein
Cryostat 16 is connected by cooling tube access port 6 and cooling tube exit 7 with sealing flow container；It is controlled by pressure control device
1 internal pressure of flow container is sealed, wherein pressure control device passes through micro-air regulating valve 4 and outside air balanced valve 5 and sealing
Flow container 1 is connected；By the pressure inside the pressure sensor 8 and the monitoring sealing flow container of temperature sensor 9 of the installation of 1 bottom of sealing flow container
And temperature change；The generation that drop can be carried out by the syringe needle 10 that 1 bottom of sealing flow container connects, by the syringe needle for replacing different bores
The drop of adjustable size is obtained, the start and stop of drop generation are controlled by the valve on syringe needle；The surface of solids is fixed on
It, can be by adjusting the mobile bracket 12 of surface of solids electric three-dimensional all around come real on the mobile bracket 12 of body surface face electric three-dimensional
Existing drips position determines, realizes control droplet falls free distance by the mobile bracket 12 of up and down adjustment electric three-dimensional, into
And control the initial velocity that drop hits plate
Specifically, including cryostat 16, cooling tube 17, inlet valve 18 in cooling device employed in the present invention
With liquid outlet valve 19.Wherein cryostat 16 includes PID controller and work nest, which is provided with inlet valve 18 and liquid outlet
Valve 19；Cooling tube 17 is connect by third pipeline c with the 4th pipeline d with inlet valve 18 and liquid outlet valve 19, third pipeline c and
It is wrapped with one layer of heat preservation material outside 4th pipeline d, and then constitutes the circulatory system with cryostat 16, reduces in droplet generator
The refrigerant temperature in portion reaches two purposes: 1. making refrigerant liquefaction, maintains liquid condition；2. reducing inside droplet generator
Pressure makes it maintain an equal level with external atmospheric pressure or slightly less than external atmosphere pressure.
Pressure control device of the present invention includes micro-injection pump 13, syringe rack 14, syringe 15 and outside
Air balance valve 5.When pressure sensor measures droplet generator internal pressure due to low temperature when lower than external atmosphere pressure, first beat
Opening external-air valve 5 makes to seal 1 air pressure inside of flow container and ambient pressure balance, then turns off external-air valve 5；It opens micro
Syringe pump 13, control syringe 15 inject air into sealing flow container 1 by the second pipeline b being connected with micro-air regulating valve 4
In, by the cooperation with pressure sensor 8, realizes and the pressure inside sealing flow container 1 is adjusted, be allowed to be formed with external atmosphere pressure
Micro pressure difference oozes refrigerant drop from the syringe needle 10 of sealing 1 bottom of flow container.
Information Collecting & Processing device of the present invention include fixed high-speed camera 27, movable high-speed camera 29,
Movable lighting system 20, photoelectric sensor 21, the surface of solids 23, lighting system movable support 22, is taken the photograph fixed light system 26
As system activity bracket 28, the mobile bracket 12 of surface of solids electric three-dimensional and computer 24.Wherein, the surface of solids 23 mainly has square
The classes such as bulge-structure, pyramidal structure, fin-shaped micro-channel structure, the composite structure of multi-cellular structure and micropore and fin structure
Type；When passing through photoelectric sensor 21 when drop drips after the generation of syringe needle 10, photoelectric sensor 21 is triggered, drips are believed
The control program in computer 24 number is passed to, then shape when by the fixed high-speed camera 27 of control process control to drop formation
State is shot, while being controlled movable high-speed camera 29 and being shot to the form during drips, and camera shooting is passed through
System activity bracket 28 adjusts movable high-speed camera 29 and the vertical relative position at Needle outlet, can get drips
Droplet morphology at different relative altitudes in the process, to study such low boiling point high volatile list drop medium in normal temperature and pressure
Evaporation characteristic when being dripped under environment.The position of movable high-speed camera 29 is also adjusted to low boiling point high volatile list simultaneously
Drop carries out precisely efficiently shooting in the droplet dynamics behavior that friction speed hits different solid surface 23.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability are observed and hit wall pilot system, which is characterized in that
Including atmospheric pressure environment drop formation device, cooling device, pressure control device and Information Collecting & Processing device；
Sealing drop generating means includes sealing flow container (1), and sealing flow container (1) top is equipped with refrigerant cut-in valve (3), micro sky
Gas regulating valve (4), cooling tube access port (6) and cooling tube exit (7), refrigerant cut-in valve (3) are connected by the first pipeline (a)
It connects refrigerant tank (11), sealing flow container (1) lower part is equipped with pressure sensor (8), temperature sensor (9) and syringe needle (10), sealing
Vacuum tank (2) are equipped with outside flow container (1), vacuum tank (2) is equipped with vacuum tank extraction valve (25)；
Cooling device includes cryostat (16) and cooling tube (17), cryostat (16) be equipped with inlet valve (18) and
Liquid outlet valve (19)；It is internal that cooling tube (17) is located at sealing flow container (1)；One end of cooling tube (17) connects cooling tube access port
(6) one end, one end of other end connection cooling tube exit (7) of cooling tube (17)；Inlet valve (18) passes through third pipe
Road (c) is connect in sealing flow container (1) outside with the other end of cooling tube access port (6)；Liquid outlet valve (19) passes through the 4th pipeline
(d) it is connect in sealing flow container (1) outside with the other end of cooling tube exit (7)；Cooling tube (17) and cryostat (16)
Constitute the circulatory system；
Pressure control device includes micro syringe (15) and outside air balanced valve (5), and syringe (15) passes through the second pipeline
(b) it is connect with micro-air regulating valve (4), outside air balanced valve (5) is set on vacuum tank (2)；
Information Collecting & Processing device includes movable high-speed camera (29), fixed high-speed camera (27), movable light system
System (20), fixed light system (26), photoelectric sensor (21) and the surface of solids (23), photoelectric sensor (21) and the surface of solids
(23) it is set in turn in below syringe needle (10).
2. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that syringe needle (10) is mounted at sealing flow container (1) lower part, and syringe needle (10) is equipped with valve.
3. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that sealing flow container (1) is cylindrical enclosure cylinder of steel, operating temperature range: -100 DEG C~100 DEG C, resistance to
Press range: 0MPa~10Mpa.
4. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that pressure control device further includes syringe rack (14) and syringe pump (13), syringe (15) peace
Loaded on syringe rack (14)；The syringe pump (13) is for driving syringe (15).
5. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that Information Collecting & Processing device further includes lighting system movable support (22), camera system activity branch
Frame (28), surface of solids electric three-dimensional mobile bracket (12) and computer (24)；The movable lighting system (20) and fixed light
Photosystem (26) is installed on lighting system movable support (22), the surface of solids (23) side is placed in, wherein movable light
System (20), which is able to carry out, to be moved up and down, and fixed light system (26) is fixed on lighting system movable support (22) top；It is described
Movable high-speed camera (29) and fixed high-speed camera (27) are installed on camera system movable support (28), are placed in solid
Body surface face (23) other side, wherein movable high-speed camera (29) is able to carry out and moves up and down, fixed high-speed camera (27)
It is fixed on camera system movable support (28) top；The surface of solids (23) is installed on the mobile bracket of surface of solids electric three-dimensional
(12) it on, and is able to carry out and all around moves up and down；Computer (24) respectively with photoelectric sensor (21), movable high-speed camera
Machine (29) and fixed high-speed camera (27) connection.
6. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that the surface of solids (23) is equipped with square bulge-structure, pyramidal structure, fin-shaped micro-channel structure, mostly micro-
One of structure that pore structure and micropore are combined with fin structure is a variety of.
7. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that equipped in refrigerant R134a, R404A, R407C, R410A and R32 in refrigerant tank (11)
It is a kind of.
8. low boiling point high volatile medium atmospheric pressure environment drop formation according to claim 1, vapo(u)rability are observed and hit wall
Pilot system, which is characterized in that be coated with heat insulating coat outside vacuum tank (2)；First pipeline (a), third pipeline (c) and the 4th pipe
Thermal insulation material is enclosed with outside road (d).
9. low boiling point high volatile medium atmospheric pressure environment drop formation, vapo(u)rability are observed and hit wall test method, which is characterized in that
Based on low boiling point high volatile medium atmospheric pressure environment drop formation described in any item of the claim 1 to 8, vapo(u)rability observation with
Hit wall pilot system, comprising the following steps:
When beginning, refrigerant cut-in valve (3), micro-air regulating valve (4), outside air balanced valve (5), vacuum tank pumping are kept
Valve (25), inlet valve (18) and liquid outlet valve (19) are in off state, and will first seal flow container (1) and vacuum tank (2) leads to respectively
It crosses outside air balanced valve (5) and vacuum tank extraction valve (25) vacuumizes, be then shut off outside air balanced valve (5) and vacuum tank
Extraction valve (25) is opened refrigerant cut-in valve (3), and refrigerant is passed into sealing flow container (1) inside, closes refrigerant cut-in valve
(3)；Cooling device outside starting makes cryostat (16) to absorb the internal heat of sealing flow container (1) by cooling tube (17)
Amount；It opens outside air balanced valve (5), detects sealing flow container (1) bottom meter pressure using pressure sensor (8), when bottom is pressed
It when power and external air pressure maintain an equal level, closes outside air balanced valve (5), opens micro-air regulating valve (4), use micro note
It penetrates pump (13) control syringe (15) and injects air into sealing flow container；Sealing flow container (1) internal pressure is adjusted, makes to seal flow container
(1) it is internal with it is extraneous form micro pressure difference after, open syringe needle (10), using sealing flow container (1) internal and external pressure difference by drop from
Syringe needle (10) extrudes, and realizes single drop formation of low boiling point high volatile liquid under atmospheric pressure environment；
When drop starts to drip from syringe needle (10) mouth, by triggering photoelectric sensor (21) when photoelectric sensor (21), photoelectricity
Sensor (21) passes to drips signal computer (24), and computer (24) controls fixed high-speed camera (27) to generation liquid
The initial size of drop is shot, meanwhile, during computer (24) controls movable high-speed camera (29) to drips
Liquid-drop diameter is observed, and by adjusting the relative position up and down of movable high-speed camera (29), can be dripped to entire drop
The evaporation characteristic fallen is observed.
10. according to the method described in claim 9, it is characterized in that, by mobile movable high-speed camera (29) to drop
The droplet dynamics behavior for hitting the surface of solids (23) is shot；Alternatively, adjusting the mobile bracket of surface of solids electric three-dimensional
(12) it moves the surface of solids (23) all around up and down, the drippage distance and dripping position of drop is adjusted, to observe
Drop hits the dynamic behavior of the surface of solids (23) under friction speed.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006971A (en) * | 2019-12-26 | 2020-04-14 | 中南大学 | Test device and method for researching contact collision behavior of liquid drops and mine dust surface |
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| CN112033990A (en) * | 2020-08-21 | 2020-12-04 | 大连理工大学 | Experimental device supporting pool boiling and liquid drop wall collision with replaceable surface and using method thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1245396A3 (en) * | 2001-03-28 | 2004-02-04 | Canon Kabushiki Kaisha | Process for forming image with liquid droplets, image forming apparatus utilizing such process and process for ejecting and projecting liquid droplets |
| US8241562B1 (en) * | 2006-02-13 | 2012-08-14 | Sandia Corporation | Enhanced toxic cloud knockdown spray system for decontamination applications |
| CN104089972A (en) * | 2014-07-18 | 2014-10-08 | 大连理工常州研究院有限公司 | Method for determining condensate depression of metal micro-drops during rapid solidification process and device used by method |
| CN104525033A (en) * | 2015-01-06 | 2015-04-22 | 北京理工大学 | Liquid cavitation homogenizer-mixer |
| CN105277469A (en) * | 2015-09-24 | 2016-01-27 | 华北电力大学 | Solid surface lower boiling working medium wettability testing apparatus and method thereof |
| CN106989933A (en) * | 2017-06-02 | 2017-07-28 | 北京理工大学 | A kind of rebuffed experimental provision of drop and method |
| CN107152873A (en) * | 2017-06-01 | 2017-09-12 | 无锡市必盛水处理剂有限公司 | One kind production sodium metasilicate cooling conveying device |
| CN109253947A (en) * | 2018-10-19 | 2019-01-22 | 西北工业大学 | High-temperature molten metal drop is rebuffed experimental provision and method under a kind of subnormal ambient |
| CN109668714A (en) * | 2019-01-16 | 2019-04-23 | 南京航空航天大学 | Low temperature drop hits rigid plane experimental provision and method |
| CN109682412A (en) * | 2019-01-16 | 2019-04-26 | 南京航空航天大学 | Cold nebulization cooling experiment device and method |
| CN107035676B (en) * | 2017-05-26 | 2019-08-13 | 南京工业大学 | The controllable cryogenic pump external characteristics experimental rig of medium phase transformation inducement and test method |
-
2019
- 2019-07-09 CN CN201910614530.8A patent/CN110530603B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1245396A3 (en) * | 2001-03-28 | 2004-02-04 | Canon Kabushiki Kaisha | Process for forming image with liquid droplets, image forming apparatus utilizing such process and process for ejecting and projecting liquid droplets |
| US8241562B1 (en) * | 2006-02-13 | 2012-08-14 | Sandia Corporation | Enhanced toxic cloud knockdown spray system for decontamination applications |
| CN104089972A (en) * | 2014-07-18 | 2014-10-08 | 大连理工常州研究院有限公司 | Method for determining condensate depression of metal micro-drops during rapid solidification process and device used by method |
| CN104525033A (en) * | 2015-01-06 | 2015-04-22 | 北京理工大学 | Liquid cavitation homogenizer-mixer |
| CN105277469A (en) * | 2015-09-24 | 2016-01-27 | 华北电力大学 | Solid surface lower boiling working medium wettability testing apparatus and method thereof |
| CN107035676B (en) * | 2017-05-26 | 2019-08-13 | 南京工业大学 | The controllable cryogenic pump external characteristics experimental rig of medium phase transformation inducement and test method |
| CN107152873A (en) * | 2017-06-01 | 2017-09-12 | 无锡市必盛水处理剂有限公司 | One kind production sodium metasilicate cooling conveying device |
| CN106989933A (en) * | 2017-06-02 | 2017-07-28 | 北京理工大学 | A kind of rebuffed experimental provision of drop and method |
| CN109253947A (en) * | 2018-10-19 | 2019-01-22 | 西北工业大学 | High-temperature molten metal drop is rebuffed experimental provision and method under a kind of subnormal ambient |
| CN109668714A (en) * | 2019-01-16 | 2019-04-23 | 南京航空航天大学 | Low temperature drop hits rigid plane experimental provision and method |
| CN109682412A (en) * | 2019-01-16 | 2019-04-26 | 南京航空航天大学 | Cold nebulization cooling experiment device and method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006971A (en) * | 2019-12-26 | 2020-04-14 | 中南大学 | Test device and method for researching contact collision behavior of liquid drops and mine dust surface |
| CN111693796A (en) * | 2020-04-30 | 2020-09-22 | 惠州市德赛西威汽车电子股份有限公司 | Touch screen durability testing method and device, terminal and storage medium |
| CN112033990A (en) * | 2020-08-21 | 2020-12-04 | 大连理工大学 | Experimental device supporting pool boiling and liquid drop wall collision with replaceable surface and using method thereof |
| CN112710692A (en) * | 2020-12-22 | 2021-04-27 | 西安交通大学 | Method and device for generating high-temperature and high-pressure micro-droplets and testing evaporation characteristics |
| CN112933623A (en) * | 2021-02-05 | 2021-06-11 | 西南石油大学 | Experimental device for low-temperature dangerous medium droplet generation and droplet group evaporation simulation |
| CN113648902A (en) * | 2021-07-14 | 2021-11-16 | 南京航空航天大学 | Device and method for preparing pentafluoropropane nanofluid |
| CN113648902B (en) * | 2021-07-14 | 2022-05-03 | 南京航空航天大学 | Device and method for preparing pentafluoropropane nanofluid |
| CN114460125A (en) * | 2022-01-21 | 2022-05-10 | 西安航空学院 | Experimental device and method for metal surface supercooling liquid drop solidification |
| CN114460125B (en) * | 2022-01-21 | 2023-11-03 | 西安航空学院 | Experimental device and method for solidifying supercooled liquid drops on metal surface |
| CN114459763A (en) * | 2022-02-21 | 2022-05-10 | 北京航空航天大学 | Height-adjustable vacuum chamber and system thereof |
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