CN109550417A - Drop generating device - Google Patents
Drop generating device Download PDFInfo
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- CN109550417A CN109550417A CN201710875508.XA CN201710875508A CN109550417A CN 109550417 A CN109550417 A CN 109550417A CN 201710875508 A CN201710875508 A CN 201710875508A CN 109550417 A CN109550417 A CN 109550417A
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- chamber
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- trunnion
- jet pipe
- ontology
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- 239000012071 phase Substances 0.000 claims abstract description 214
- 239000007791 liquid phase Substances 0.000 claims abstract description 104
- 239000000203 mixture Substances 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims description 16
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 210000000867 larynx Anatomy 0.000 claims description 3
- 239000005297 pyrex Substances 0.000 claims description 3
- 230000005514 two-phase flow Effects 0.000 abstract description 11
- 239000000843 powder Substances 0.000 abstract description 8
- 239000007790 solid phase Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 55
- 238000013461 design Methods 0.000 description 32
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 12
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- 241000220317 Rosa Species 0.000 description 6
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/28—Jet mixers, i.e. mixers using high-speed fluid streams characterised by the specific design of the jet injector
- B01F25/281—Jet mixers, i.e. mixers using high-speed fluid streams characterised by the specific design of the jet injector the jet injector being of the explosive rapid expansion of supercritical solutions [RESS] or fluid injection of molecular spray [FIMS] type, i.e. the liquid is jetted in an environment (gas or liquid) by nozzles, in conditions of significant pressure drop, with the possible generation of shock waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/30—Mixing gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/30—Mixing gases with solids
- B01F23/32—Mixing gases with solids by introducing solids in gas volumes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/27—Mixing by jetting components into a conduit for agitating its contents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a kind of drop generating devices, it include: ontology, liquid phase inlet chamber, gas phase drainage chamber and two-phase mixtures chamber are defined in ontology, liquid phase inlet chamber gentle phase drainage chamber is spaced apart and respectively with two-phase mixtures chamber, and ontology is equipped with liquid phase entrance be connected to liquid phase inlet chamber and drains the gas phase entrance of chamber with gas phase；Jet pipe, jet pipe are located in ontology, and the arrival end of jet pipe is connected to liquid phase inlet chamber, the outlet end of jet pipe and two-phase mixtures chamber, and the radial dimension of outlet end is less than the radial dimension of arrival end；Trunnion is located in ontology, and the input end and two-phase mixtures chamber of trunnion, the ejection end of trunnion is for spraying medium.Drop generating device according to an embodiment of the present invention introduces medium from gas phase drainage chamber, can be adapted for generating powder in generation drop and gas-solid phase in gas-liquid two-phase flow, realize energy-efficient drainage way by reducing the pressure of outlet end position.
Description
Technical field
The present invention relates to biphase gas and liquid flow thermohydraulics to test field, and in particular, to drop in field of industrial production
Generation and spray technique, more particularly, to a kind of drop generating device.
Background technique
In the industries such as electricity power, chemical industry, aerospace, the manufacture of high power component and cooling and new material, usually need
Carry out biphase gas and liquid flow mechanism test research.Such as flow boiling and heat transfer, heat transfer coefficient are usually higher by number than single-phase heat exchange
Ten times, it is the major way of enhanced heat exchange, is of great significance to the production run of every profession and trade.Modern fired power generating unit is to improve hair
Electrical efficiency and constantly to the development of height/ultra-high parameter, as nuclear power technology rapidly develops, operating parameter is continuously improved, for senior staff officer
Number boiler and reactor core, the Research on Heat Transfer Characteristics under high-temperature and high-pressure conditions all have the economy of power plant and safety
There is very important meaning.Wherein drop/steam Two-phase Flow & Thermal Conduction problem is one of Main Topics of boiling heat transfer,
A research topic for this problem, critical issue one of of the critical heat flux density as boiling heat transfer, critical heat flux density
It is the thermal parameter that the heat exchange surface of heat exchange equipment must supervise, for the various heat transfer sheets by control heat flow density operation
Face, when heat flow density is more than critical heat flux density, heat transfer coefficient sharply declines, and wall temperature is sharply ascended to heaven, and is likely to result in equipment
It burns.The mechanism that critical heat flux density occurs not yet is fully apparent from present, and research method is mainly based on experimental study.It is critical
The dominant mechanism model of heat flow density has: liquid film is evaporated mechanism, near wall bubble congestion mechanism, micro- liquid layer and is evaporated mechanism and interface
Separating mechanism.Wherein under the action of liquid film is evaporated mechanism, it is liquid film evaporation, the entrainment of mainstream drop and droplet settling that liquid film, which exhausts,
Synthesis result.The method of measurement air content (void fraction) is mostly used to obtain the content of liquid phase in experimental study greatly at present,
Or the size and speed of drop are measured in test by method for visualizing.Another research topic for this problem,
In Nuclear Safety analysis field, the cross-section study of boiling heat transfer further includes the (design of reactor of reactor large-break LOCA
One of basis accident) in flood phenomenon again.Flooding phenomenon again is that reactor (sprays one of important stage of experience after accident
It puts, pour water again, flooding again and cooling down for a long time).Before being flooded again after spurting, since Core uncovering cannot be adequately cold
But, the release of reactor core decay heat causes fuel element to have the danger of fusing, it is therefore desirable to which core cooling system provides enough cold
But agent enables reactor core to flood again, to export reactor core heat.Therefore flood again is export residual heat of nuclear core, guarantee reactor
The important stage of safety.And flooding again the stage, film boiling heat exchange is the principal mode of pioneer's cooling heat transferring.In film boiling
In the process, liquid film and a large amount of drops are formed in heat exchange surface, it is cooling to provide pioneer for reactor core.At present mainly using test method come
It studies its boiling heat transfer mechanism, obtains the model of various single phenomenons, as wall surface exchanges heat with liquid film, drop and steam is alternate changes
Data and model, the assessment emergency reactor reactor core such as heat, wall surface and drop radiant heat transfer, wall surface droplet settling, drop entrainment are cold
But the exchange capability of heat of system.
However in existing experimental study, the size and speed of the entrained drip that measurement has generated are usually relied on, in conjunction with
The macroparameters such as temperature and heat flow density study drop and steam white heat, since white heat process is complicated and by more
The influence of kind factor, such as droplet size and speed, water and steam flow rate, pressure, the degree of supercooling for entering saliva, wall surface temperature and hot merit
Each parameter such as rate influences, and is difficult to control variable by a large amount of drops newly-generated in test and obtains the machine of single factors effect
System.
Summary of the invention
The present invention is directed to solve one of above-mentioned technical problem at least to a certain extent.
For this purpose, the present invention proposes that a kind of structure is simple and convenient to operate, can be adapted for generating drop in gas-liquid two-phase flow
And the drop generating device of powder is generated in gas-solid phase.
Drop generating device according to an embodiment of the present invention, comprising: ontology defines liquid phase entrance cavity in the ontology
Room, gas phase drain chamber and two-phase mixtures chamber, and the liquid phase inlet chamber and the gas phase drainage lumens interventricular septum are opened and difference
With the two-phase mixtures chamber, the ontology be equipped with the liquid phase entrance that is connected to the liquid phase inlet chamber and with the gas
Mutually drain the gas phase entrance of chamber；Jet pipe, the jet pipe are located in the ontology, the arrival end of the jet pipe with
The liquid phase inlet chamber connection, the outlet end of the jet pipe and the two-phase mixtures chamber, the diameter of the outlet end
It is less than the radial dimension of the arrival end to size；And trunnion, the trunnion are located in the ontology, the import of the trunnion
End and the two-phase mixtures chamber, the ejection end of the trunnion is for spraying medium.
Drop generating device according to an embodiment of the present invention, by defining liquid phase inlet chamber in ontology, gas phase is drawn
Flow chamber and two-phase mixtures chamber, the medium flowed into from liquid phase inlet chamber flow velocity after jet pipe is gradually increased, pressure by
It is decrescence small, the energy-efficient introducing for the medium in gas phase drainage chamber is realized, while also can be suitably used for gas-liquid two-phase flow
Powder is generated in middle generation drop and gas-solid phase.
In addition, drop generating device according to an embodiment of the present invention, can also have the following additional technical features:
According to one embodiment of present invention, the section of the ontology is generally formed into rectangle, the liquid phase inlet chamber
It is located at one end of the ontology and extends along the width direction of the ontology, the jet pipe and the trunnion are respectively along described
The length direction of body extends, and the two-phase mixtures chamber is located between the jet pipe and the trunnion.
According to one embodiment of present invention, the liquid phase entrance and the gas phase entrance are respectively provided at the ontology in length
Spend the opposite sides on direction.
According to one embodiment of present invention, the gas phase drainage chamber is generally formed into column, the gas phase drainage lumens
The closed at one end and other end of room and the two-phase mixtures chamber, the gas phase entrance are located at the gas phase drainage chamber
Side, the jet pipe is plugged in gas phase drainage lumens room and the gas phase drainage chamber is stretched out in the outlet end.
According to one embodiment of present invention, the outlet end point of the other end of the gas phase drainage chamber and the jet pipe
Be not formed as necking, the two-phase mixtures chamber is located at the necking end of gas phase the drainage chamber and the jet pipe.
According to one embodiment of present invention, discharge chamber is defined in the ontology, the ejection end of the trunnion protrudes into institute
State discharge chamber.
According to one embodiment of present invention, the ejection end of the trunnion is formed as open.
According to one embodiment of present invention, the gas phase drainage chamber and the two-phase mixtures chamber are respectively multiple,
Multiple gas phase drainage chambers are distributed along the spaced apart width wise of the ontology, in each gas phase drainage lumens room respectively
Equipped with the jet pipe, the trunnion is multiple and corresponds respectively with the jet pipe.
According to one embodiment of present invention, the drop generating device further include: jet pipe orifice plate, the jet pipe
Orifice plate is located at the liquid phase inlet chamber so that medium to be assigned in multiple jet pipes.
According to one embodiment of present invention, the drop generating device further include: nozzle, the nozzle are located at described
Outlet end and be formed as round, the nozzle be equipped with along its axially through first through hole and multiple second through-holes, described first
Through-hole is located at the center of the nozzle and coaxial with the nozzle, and multiple second through-holes are along the circumferentially spaced of the nozzle
It is located at the periphery of the nozzle.
According to one embodiment of present invention, the drop generating device further include: cowling panel, the cowling panel are located at
In the trunnion and the neighbouring ejection end, the cowling panel are formed as round, the cowling panel be equipped with along its axially through
Multiple third through-holes, multiple third through-hole intervals are provided on the cowling panel.
According to one embodiment of present invention, at least part third through-hole being radially spaced along the cowling panel
Arrangement.
According to one embodiment of present invention, the outlet end of the trunnion is equipped with observation window and level height shooting machine for seeing
Examine and record the form and distribution parameter for generating drop.
According to one embodiment of present invention, the length of the trunnion is 4-7 times of the diameter of the trunnion.
According to one embodiment of present invention, the distance between the nozzle and the trunnion are the diameters of the jet pipe
1.2 times -1.6 times.
According to one embodiment of present invention, the ontology is formed as Pyrex glass workpiece or quartz glass part.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of drop generating device according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the nozzle of drop generating device according to an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the biphase gas and liquid flow cowling panel of drop generating device according to an embodiment of the present invention；
Fig. 4 is the diameter distribution profile for the drop that calculation formula according to an embodiment of the present invention obtains.
Appended drawing reference:
Drop generating device 100；
Ontology 10；Liquid phase inlet chamber 11；Gas phase drains chamber 12；Two-phase mixtures chamber 13；Liquid phase entrance 14；Gas phase enters
Mouth 15；
Jet pipe 20；Arrival end 21；Outlet end 22；
Trunnion 30；Ejection end 31；Input end 32；Throat 33；Third pressure gauge 34；Third flowmeter 35.
Discharge chamber 40；
Diffuser 50；
Jet pipe orifice plate 60；
Nozzle 70；First through hole 71；Second through-hole 72；
Cowling panel 80；Third through-hole 81；
Level height shooting machine 90；
Liquid-supplying system 200；
Centrifugal pump 201；Second pneumatic operated valve 202；Second pressure gauge 203；Second flowmeter 204；
Air supply system 300；
Air compressor 301；Air accumulator 302；First pneumatic operated valve 303；First pressure gauge 304；First flowmeter 305.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise " is side based on the figure
Position or positional relationship, are merely for convenience of description of the present invention and simplification of the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.This
Outside, term " first ", " second ", which are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or imply, refers to
The quantity of bright indicated technical characteristic." first " is defined as a result, the feature of " second " can explicitly or implicitly include
One or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise bright
It is really specific to limit.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
Drop generating device 100 according to an embodiment of the present invention is specifically described with reference to the accompanying drawing.
As shown in Figure 1 to Figure 3, drop generating device 100 according to an embodiment of the present invention include ontology 10, jet pipe 20 with
And trunnion 30.
Specifically, liquid phase inlet chamber 11, gas phase drainage chamber 12 and two-phase mixtures chamber 13 are defined in ontology 10,
The gentle phase of liquid phase inlet chamber 11 drainage chamber 12 is spaced apart and is connected to respectively with two-phase mixtures chamber 13, and ontology 10 is equipped with and liquid
The liquid phase entrance 14 and the gas phase entrance 15 being connected to gas phase drainage chamber 12, jet pipe 20 that phase inlet chamber 11 is connected to are located at this
In body 10, the arrival end 21 of jet pipe 20 is connected to liquid phase inlet chamber 11, the outlet end 22 of jet pipe 20 and two-phase mixtures chamber
Room 13 is connected to, and the radial dimension of outlet end 22 is less than the radial dimension of arrival end 21, and trunnion 30 is located in ontology 10, trunnion 30
Input end is connected to two-phase mixtures chamber 13, and the ejection end of trunnion 30 is for spraying medium.
In other words, drop generating device 100 according to an embodiment of the present invention, mainly by ontology 10, jet pipe 20 and larynx
Pipe 30 forms, and liquid phase inlet chamber 11, gas phase drainage chamber 12 and two-phase mixtures chamber 13 is defined in ontology 10, liquid phase enters
First medium is accommodated in oral chamber 11, ontology 10 is equipped with the liquid phase entrance 14 being connected to liquid phase inlet chamber 11, first medium
Enter liquid phase inlet chamber 11 by liquid phase entrance 14, accommodates second medium in gas phase drainage chamber 12, ontology 10 is additionally provided with
The gas phase entrance 15 being connected to gas phase drainage chamber 12, second medium enter gas phase by gas phase entrance 15 and drain chamber 12.Liquid
The gentle phase of phase inlet chamber 11 drainage chamber 12 is spaced apart and is connected to respectively with two-phase mixtures chamber 13, is additionally provided in ontology 10
The arrival end 21 of jet pipe 20, jet pipe 20 is connected to liquid phase inlet chamber 11, the outlet end 22 of jet pipe 20 and two-phase mixtures
Chamber 13 is connected to, and the radial dimension of outlet end 22 is less than the radial dimension of arrival end 21, and first medium is in the outlet of jet pipe 20
Holding 22 positions, nearby flow velocity gradually increases, pressure gradually decreases, and the pressure reduction of two-phase mixtures chamber 13 plays second medium
To the effect of drainage, since the pressure of the second medium at gas phase entrance 15 is big, then second medium can pass through gas phase drainage lumens
Room 12 is inhaled into two-phase mixtures chamber 13, and first medium and second medium are sufficiently mixed in two-phase mixtures chamber 13,
Form the medium with certain size.
Trunnion 30 is located in ontology 10, and the input end of trunnion 30 is connected to two-phase mixtures chamber 13, the ejection end of trunnion 30
31 for spraying medium.
Drop generating device 100 according to an embodiment of the present invention as a result, passes through liquid phase inlet chamber 11, gas phase drainage lumens
The design of the structure of room 12 and two-phase mixtures chamber 13, is equipped with jet pipe 20, two-phase mixtures chamber 13 in liquid phase inlet chamber 11
It is communicated with trunnion 30, first medium accelerates in 22 position of the outlet end of jet pipe 20, decompression, introduces the from gas phase drainage chamber 12
Second medium, first medium and second medium form the medium with certain size in two-phase mixtures chamber 13, while also realizing
Energy-efficient drainage way.
It should be noted that drop generating device 100 is applicable to generate drop and gas-solid two in gas-liquid two-phase flow
Xiang Liuzhong generates powder, that is to say, that mixed by two-phase when first medium is liquid phase fluid, second medium is gaseous fluid
Chamber 13 and trunnion 30 are closed, the drop with certain size can be formed, is gas phase when first medium is solid phase fluid, second medium
When medium, by two-phase mixtures chamber 13 and trunnion 30, the powder with certain size can be formed, in the present embodiment with gas-
It is illustrated for liquid two-phase.
Specifically, gaseous fluid is in two-phase mixtures in the gentle phase drainage chamber 12 of liquid phase fluid in liquid phase inlet chamber 11
The drop for mixing and being formed in chamber 13 drains the knot of chamber 12 and two-phase mixtures chamber 13 by liquid phase inlet chamber 11, gas phase
Structure design and gas-liquid two-phase mixtures are than control, with jet theory, liquid surface instability theory and breakup of drop principle, in larynx
The ejection end 31 of pipe 30 forms the drop-gas phase Two-Phase Flow Field with special diameter distribution, is biphase gas and liquid flow thermohydraulics
Mechanism study test or other equipments of industrial product provide the drop for meeting diameter Spreading requirements.
According to one embodiment of present invention, the section of ontology 10 can be generally formed into rectangle, be equipped in ontology 10
Liquid phase inlet chamber 11, jet pipe 20 and trunnion 30.
Specifically, liquid phase inlet chamber 11 is located at one end of ontology 10 and extends along the width direction of ontology 10, jet pipe
20 and trunnion 30 extend respectively along the length direction of ontology 10, jet pipe 20 and trunnion 30 have certain length, two-phase mixtures
Chamber 13 is located between jet pipe 20 and trunnion 30.
That is, liquid phase fluid enters liquid phase inlet chamber 11 by liquid phase entrance 14, by with certain length
Flow velocity increases after jet pipe 20, and pressure reduces, and into two-phase mixtures chamber 13, the input end of trunnion 30 forms throat 33, is penetrating
For flow tube 20 between throat 33, the flow velocity of liquid phase fluid reaches highest, and pressure minimizes, according to drop generating device 100
Geometry designs can form vacuum in two-phase mixtures chamber 13, convenient for gaseous fluid is introduced two-phase mixtures chamber 13, drainage side
Formula is energy-efficient.Jet pipe 20 has certain length, is easy to implement liquid phase fluid from when the outflow of the outlet end of jet pipe 20 22
Pressure is small, and drop continues to be crushed after entering trunnion 30 in two-phase mixtures chamber 13, is changed according to dual-phase jet internal flow state and is managed
By since the input end 32 of trunnion 30, sequentially forming two-phase relative motion region, drop in the trunnion 30 of certain length
The Design of length of flow region, foam-like flow region, trunnion 30 is two-phase relative motion region and liquid drip flow region, is passed through
Structure design and gas-liquid two-phase mixtures are than control, with jet theory, liquid surface instability theory, breakup of drop principle,
The ejection end 31 of trunnion 30 can form drop-gas phase Two-Phase Flow Field with special diameter distribution, be biphase gas and liquid flow thermal technology water
Mechanical mechanism development test or other equipments of industrial product provide the drop for meeting diameter Spreading requirements.
Preferably, the length of trunnion 30 is 4-7 times of the diameter of trunnion 30.
It should be noted that third pressure gauge and third flowmeter can be connected at the ejection end 31 of trunnion 30.
Optionally, liquid phase entrance 14 and gas phase entrance 15 can be respectively provided at the opposite sides of ontology 10 in the longitudinal direction,
When being equipped with multiple liquid phase inlet chambers 11, gas phase drainage chamber 12 and two-phase mixtures chamber 13 in ontology 10, by setting respectively
In the liquid phase entrance 14 and gas phase entrance 15 of the opposite sides of ontology 10 in the longitudinal direction, gaseous fluid and liquid phase stream can be made
Body mixes in each two-phase mixtures chamber 13.
It should be noted that liquid-supplying system 200, liquid-supplying system 200 and liquid phase can be equipped in 11 side of liquid phase inlet chamber
Entrance 14 is connected to convey liquid phase fluid to liquid phase inlet chamber 11, can be equipped with air supply system in gas phase drainage 12 side of chamber
300, air supply system 300 is connected to convey gaseous fluid, 14 He of liquid phase entrance into gas phase drainage chamber 12 with gas phase entrance 15
When gas phase entrance 15 is not set to side, convenient for the arrangement of liquid-supplying system 200 and air supply system 300, and convenient for having in ontology 10
There are multiple jet pipes 20.
In certain specific embodiments of the invention, gas phase drainage chamber 12 can be generally formed into column, gas phase drainage
The closed at one end and other end of chamber 12 is connected to two-phase mixtures chamber 13, and gas phase entrance 15 is located at the side of gas phase drainage chamber 12
Portion, jet pipe 20 is plugged in gas phase drainage chamber 12 and gas phase drainage chamber 12 is stretched out in outlet end 22.
Specifically, gas phase drainage chamber 12, can only court by the gaseous fluid that gas phase entrance 15 is passed through due to closed at one end
Another extreme direction being connected to gas phase drainage chamber 12 with two-phase mixtures chamber 13 flows, and accommodates liquid phase stream in jet pipe 20
Body, the outlet end 22 that liquid phase fluid passes through jet pipe 20 are mixed with the gaseous fluid flowed out out of gas phase drainage chamber 12.
Further, the other end of gas phase drainage chamber 12 and the outlet end 22 of jet pipe 20 are respectively formed as necking, and two
Mix the necking end that chamber 13 is located at gas phase drainage chamber 12 and jet pipe 20.
Specifically, the other end of gas phase drainage chamber 12 is formed as necking, convenient for gaseous fluid is introduced into two-phase mixtures
In chamber 13, the outlet end 22 of jet pipe 20 is formed as necking, convenient for increasing the flow velocity of the liquid phase fluid flowed out from outlet end 22
Fastly, pressure reduction, make the gaseous fluid at gas phase entrance 15 pressure be greater than two-phase mixtures chamber 13 in pressure, realize for
The efficient drainage of gaseous fluid.
According to one embodiment of present invention, discharge chamber 40 is defined in ontology 10, the ejection end 31 of trunnion 30 protrudes into spray
Room 40 out, drop are sprayed from discharge chamber 40.
Optionally, the ejection end 31 of trunnion 30 is formed as open.
It should be noted that the ejection end 31 in trunnion 30 is connected with diffuser 50, diffuser 50 can be used for increasing two-phase
To restore fluid field pressure, drop is ejected in biphase gas and liquid flow thermohydraulics experimental rig discharge area from discharge chamber 40.
In some embodiments of the invention, gas phase drainage chamber 12 and two-phase mixtures chamber 13 are respectively multiple.
Specifically, multiple gas phase drainage chambers 12 are distributed along the spaced apart width wise of ontology 10, each gas phase drainage lumens
Jet pipe 20 is respectively equipped in room 12, trunnion 30 is multiple and corresponds respectively with jet pipe 20 that raising forms specific dimensions
Drop efficiency.
Further, drop generating device 100 according to an embodiment of the present invention further include: jet pipe orifice plate 60, jet pipe
Orifice plate 60 is located in liquid phase inlet chamber 11 so that medium to be assigned in multiple jet pipes 20.
According to one embodiment of present invention, drop generating device 100 further include: nozzle 70.
Specifically, nozzle 70 is located at outlet end 22 and is formed as circle, nozzle 70 be equipped with along its axially through first
Through-hole 71 and multiple second through-holes 72, first through hole 71 are located at the center of nozzle 70 and, multiple second through-holes coaxial with nozzle 70
72 pass through nozzle along the circumferentially-spaced periphery for being provided with nozzle 70 of nozzle 70, the drop generating device 100 of the embodiment of the present invention
70, the geometry designs of two-phase mixtures chamber 13 and trunnion 30, it is ensured that gas liquid two-phase flow form is droplet-like flowing, rather than two
Phase shear flow or foam-like flowing, ensure that generated droplet diameter distribution has good dispersibility.
It is designed by structure, can make to minimize in the increase of 70 position water flow velocity of nozzle, pressure, be exported in nozzle 70
The input end 32 of trunnion 30 forms negative pressure, introduces gas from gas phase drainage chamber 12, according to breakup of drop principle, sprays from nozzle 70
The fluid column of injection and occurs that surface is unstable and second-time breakage due to the speed difference of liquid and gas, to form special diameter
The drop of distribution.According to gas-liquid jet stream internal flow state changing rule, formed in the ejection end 31 of trunnion 30 with special diameter point
The drop of cloth-gas phase Two-Phase Flow Field tests mechanism study for biphase gas and liquid flow thermohydraulics or industrial production provides satisfaction directly
The drop of diameter Spreading requirements.
Preferably, the distance between the throat 33 of nozzle 70 and trunnion 30 is 1.2 times -1.6 times of the diameter of jet pipe 20,
If if too long the friction loss of fluid-wall surface it is larger, and thicker shock wave can be formed in two-phase mixtures chamber 13, such as
Fruit distance is too short, and gaseous fluid and liquid phase fluid cannot be sufficiently mixed, according to liquid surface instability theory, fluid column surface shape
At perturbation wave, disturbs wave amplitude and increase, when growth rate reaches maximum value, fluid column is broken into big drop, in gaseous fluid and liquid
When speed difference between phase fluid exists, big drop is deformed and is crushed, big drop from two-phase mixtures chamber 13 into
After entering trunnion 30, continue to be crushed.
In certain specific embodiments of the invention, drop generating device 100 further include: cowling panel 80.
Specifically, cowling panel 80 is located in trunnion 30 and neighbouring ejection end 31, cowling panel 80 are formed as round, cowling panel 80
Equipped with along its axially through multiple third through-holes 81, multiple third through-holes 81 interval is provided on cowling panel 80, can make gas
Phase flow field and drop flow field are more uniform.
Further, at least part third through-hole 81 is radially spaced arrangement along cowling panel 80.
In certain specific embodiments of the invention, the ejection end 31 of trunnion 30 is equipped with observation window and level height shooting machine 90
In the form of for observing and recording generation drop and distribution parameter, the drop parameter actually observed are used for amendment design value,
The quantitative input condition of drop field is provided for biphase gas and liquid flow thermohydraulics experimental rig.
Preferably, ontology 10 is formed as Pyrex glass workpiece or quartz glass part, has high intensity, prolongs the service life.
To sum up, the drop generating device 100 of the embodiment of the present invention is based on jet theory and breakup of drop principle designs,
Principle has universality and replicability, and drop generating device 100 is widely portable to generate drop, gas-in gas-liquid two-phase flow
Powder is generated in fixed double phase flow, applicable field not only includes flow boiling and heat transfer mechanism study, also may extend to industrial life
Production field such as spray burning, sprayed coating, spray drying production powder (such as milk powder).Drop generating device 100 passes through gas phase
The design for draining chamber 12 saves air compressor acting, and structure is simplified, cost reduces, and realizes energy-efficient drainage
Mode.The Combination Design that drop generating device 100 passes through nozzle 70, two-phase mixtures chamber 13 and trunnion 30, it is ensured that gas-liquid two
Phase nowed forming is droplet-like flowing, rather than two-phase shear flow or foam-like flowing, ensure that generated droplet diameter distribution tool
There is good dispersibility, the drop-gas phase Two-Phase Flow Field with special diameter distribution is formed in the ejection end 31 of trunnion 30, for gas
Liquid two-phase thermohydraulics experimental rig or other industrial equipment (such as energy, electric power, chemical industry, the burner hearth in food, combustions
Burn room, flush coater, spray dryer etc.) drop for meeting diameter Spreading requirements for being used for mechanism study is provided.The present invention is implemented
The drop generating device 100 of example can be widely applied to the fields such as the energy, electric power, chemical industry, manufacturing industry, food and pharmacy, Yi Jire
The testing grounds such as work hydraulics biphase gas and liquid flow mechanism test research, have universality and replicability.
The present invention also provides the passes between a kind of structural parameters according to drop generating device 100 and drop parameter designing
System calculates the efficiency of drop generating device 100 and the calculation method of liquid-drop diameter.
According to one embodiment of present invention, air supply system 300 includes air compressor 301, air accumulator 302, the first gas
Dynamic valve 303, first pressure gauge 304 and first flowmeter 305.
Specifically, for providing air-source, air accumulator 302 is connected with air compressor 301 to be used for air compressor 301
Stored air simultaneously provides more stable gas source, and the first pneumatic operated valve 303 is used to adjust the gas phase flow rate Q of air supply systemg, the first pressure
Power table 304 is used to monitor the gas pressure p of the entrance of liquid phase inlet chambergAnd first flowmeter 305 enters for monitoring liquid phase
The gas phase flow rate Q of the entrance of oral chamberg。
According to another embodiment of the invention, liquid-supplying system 200 includes centrifugal pump 201, the second pneumatic operated valve 202, second
Pressure gauge 203 and second flowmeter 204.
Specifically, centrifugal pump 201 is used to provide liquid phase fluid for liquid phase inlet chamber, and the second pneumatic operated valve 202 is for adjusting
The liquid phase flow Q of water systeml, the fluid pressure p of entrance of the second pressure gauge 203 for monitoring liquid phase inlet chamberl, and
Second flowmeter 204 is used to monitor the liquid phase flow Q of the entrance of liquid phase inlet chamberl。
It, can be to the efficiency of drop generating device 100 using calculation method in certain specific embodiments of the invention
It is calculated with liquid-drop diameter.
Specifically, it is calculated and is set it is, for example, possible to use structural parameters of the following methods to drop generating device 100
Meter, calculates the efficiency and liquid-drop diameter of drop generating device 100.
(1) the single hole diameter calculation formula of nozzle 70:
Formula (1-1) is the liquid phase flow equation of the liquid phase fluid in jet pipe 20 and can be derived according to Bernoulli equation；
Formula (1-2) can calculate the diameter of the nozzle 70 by the modified jet pipe 20 of discharge coefficient；
In formula: Ql--- liquid phase flow；Qg--- gas phase flow rate；M --- gas phase mass flow and liquid phase quality flow-rate ratio；
pl--- the pressure of the liquid phase flow in liquid phase inlet chamber；pg--- gas phase drains the gas pressure in chamber；pd--- diffusion
The pressure of two-phase mixture after pipe；α1--- correction factor；μ1--- discharge coefficient.
It should be noted that the pressure of the liquid phase fluid of the outlet end 22 of design jet pipe 20 is equal to going out from diffuser 50
The pressure p of two-phase mixture at mouthfuld；α1=1~1.05, value 1；μ1=0.9~0.95, value 0.9.
(2) the jet rose diameter design of nozzle 70:
d2=(2n+1) d1 (2-1)
In formula: n --- in hole number diametrically；d1--- the single hole diameter of nozzle；d2--- the jet rose of nozzle is straight
Diameter.(3) diameter design of jet pipe 20:
d3=2.5d2 (3-1)
In formula: d2--- the jet rose diameter of nozzle；d3--- the diameter of jet pipe.
(4) the best area ratio calculation formula in the section of trunnion 30 and nozzle 70:
It should be noted that known mass flow ratio, according to Cosline and O ' jet theory of Brien, available formula (4-
1)；
In formula, Ropt--- trunnion and the best area ratio of nozzle；A --- related coefficient；
Wherein C0=0.65~1；The value of a is related to throat with nozzle area ratio.
(5) 30 diameter design calculation formula of trunnion:
In formula, Ropt--- trunnion and the best area ratio of nozzle；d3--- the diameter of jet pipe；d4--- throat pipe diameter.
(6) gas phase drains 12 diameter design of chamber:
d5=4d2 (6-1)
In formula, d3--- the diameter of jet pipe；d5--- gas phase drains chamber diameter.
(7) two-phase mixtures chamber 13 is designed in the ejection end exit diameter of nozzle 70:
In formula, d2--- the jet rose diameter of nozzle；d3--- the diameter of jet pipe；d5--- it is straight that gas phase drains chamber
Diameter；d6--- ejection end exit diameter of the two-phase mixtures chamber in nozzle.
(8) 50 diameter design of diffuser:
d7=1.2d2 (8-1)
In formula, d2--- the jet rose diameter of nozzle；d7--- diffuser pipe diameter.
(9) 11 diameter design of liquid phase inlet chamber:
d8=md5 (9-1)
In formula, the total quantity of m --- jet pipe；d5--- gas phase drains chamber diameter；d8--- liquid phase inlet chamber is straight
Diameter.(10) 20 cone-apex angle of jet pipe designs:
α=20 °~40 ° (10-1)
In formula, α --- jet pipe cone-apex angle；
Preferably, α=30 °.
(11) 13 cone-apex angle of two-phase mixtures chamber designs:
β=α=30 ° (11-1)
In formula, α --- jet pipe cone-apex angle；β --- two-phase mixtures chamber cone-apex angle.
(12) 50 cone-apex angle of diffuser designs:
γ=5 °~8 ° (12-1)
In formula, γ --- jet pipe cone-apex angle；
Preferably, γ=6 °.
(13) 20 Design of length of jet pipe:
Lj=3d3 (13-1)
In formula, d3--- the diameter of jet pipe；Lj--- jet stream length of tube.
(14) 30 Design of length of trunnion:
Lk=(4~7) d4 (14-1)
In formula, d4--- throat pipe diameter；Lk--- length of throat.
Preferably, Lk=6d4 (14-2)
(15) nozzle 70 designs at a distance from throat 33:
Ls=(1.2~1.6) d3 (15-1)
In formula, d3--- the diameter of jet pipe；Ls3--- nozzle is at a distance from throat.
Preferably, Ls=1.5d3 (15-2)
(16) 50 Design of length of diffuser:
Ld=cos γ [(dd-d2)/2] (16-1)
In formula, d2--- the jet rose diameter of the nozzle of jet pipe；γ --- jet pipe cone-apex angle；dd--- diffuser
Length.(17) 11 Design of length of liquid phase inlet chamber:
Lin=4d8 (17-1)
In formula, d8--- liquid phase inlet chamber diameter；Lin--- liquid phase inlet chamber length.
(18) 40 Design of length of discharge chamber:
Lout=1.5dd (18-1)
In formula, dd--- diffusion tube lengths；Lout--- discharge chamber length.
(19) ejection end of nozzle 70 exports liquid velocity calculation formula:
In formula, d1--- the single hole diameter of the nozzle of jet pipe；ul--- the ejection end of nozzle exports liquid velocity；
Ql--- liquid phase flow.
(20) the gas phase velocity calculation formula that two-phase mixtures chamber 13 is exported in nozzle 70:
In formula, d6--- exit diameter of the two-phase mixtures chamber in the ejection end of nozzle；Qg--- gas phase flow rate；
ug--- gas phase velocity of the two-phase mixtures chamber in nozzle exit.
(21) the efficiency calculation formula of drop generating device 100
M0=(5R-0.9445)0.5- 1.75R=is [1.5,3)
N0=2.667-0.0023 (R+26.07)2R=is [1.5,3)
M0=(5R-0.95)0.5- 1.7R=is [3,25)
N0=1.45R-0.892R=[3,25) (21-6)
(22) liquid-drop diameter calculation formula:
γ=R+ δ ' (22-1)
δ '=real [δ0·eikx+(ω-ikU)t] (22-2)
Ur=ul-ug (22-8)
In formula, R --- the cross sectional radius of fluid column when undisturbed, unit m；The wave amplitude of δ ' --- perturbation wave, unit
For m, can be indicated with the real part of perturbation wave；λs--- the wavelength of fastest-rising perturbation wave；Ks --- it is fastest-rising to disturb
The dynamic corresponding dimensionless wave number of wave；The fluid column diameter of h --- jet expansion, unit m；The broken big liquid generated of r --- fluid column
The average diameter of drop；We --- drop We number, for characterizing the ratio between drop resistance and surface tension；d0--- liquid-drop diameter；
Ur--- two-phase relative velocity.
It should be noted that radial dilatation occurs for the fluid column sprayed from nozzle 70, the disturbance wave amplitude on fluid column surface is continuous
Increase, when disturbance wave growth rate reaches maximum value, fluid column is broken to form drop.Based on liquid surface Instability Theory, liquid
The wavelength of surface wave is directly proportional when the size and broken fluid column of the broken drop generated of column.
According to liquid surface Instability Theory, due to the presence of perturbation wave, fluid column surface has lesser disturbance to be displaced, can
Show that fluid column surface equation is (22-1).
According to liquid surface Instability Theory, disturbs wave amplitude and increase, when the growth rate of surface wave reaches maximum value,
Fluid column is broken into big drop, and according to formula (22-1) to (22-4), it is broken that fluid column the broken spherical big drop formed of fluid column: can be obtained
The formula (22-5) of the average diameter of the big drop of broken generation.
According to Hinze research theory, under aerodynamic action, drop deformation depends primarily on drop We with broken
Number, drop We number, according to formula (22-7), can obtain liquid-drop diameter for characterizing the ratio between drop resistance and surface tension.
Further, the We number range for shearing drop is 100≤We < 1000, in the range of 100≤We < 1000, with gas
The increase of the relative velocity of body and drop, drop edge are cut into liquid film, then circumferentially broken along drop, broken control because
Element is air-flow for moving the removing of drop, the drop with acceleration from maximum diameter windward remove, in drop week
It encloses and its tail portion forms a large amount of fine drops.According to nozzle 70 export two-phase relative velocity and liquid phase surface tension it can be concluded that
The liquid-drop diameter range that nozzle 70 exports, the diameter distribution for shearing drop meet normal distribution law.
In certain specific embodiments of the invention, by taking air as an example, liquid phase fluid carries out gaseous fluid by taking water as an example
Explanation.
When liquid phase fluid is water and gaseous fluid is air, chamber is drained by the gentle phase of liquid phase inlet chamber 11 respectively
12 introduce, and form liquid phase jet stream in gaseous fluid, pass through jet theory, liquid surface instability theory, breakup of drop principle
Form the drop of certain size.
Liquid-supplying system 200 includes: centrifugal pump 201, the second pneumatic operated valve 202, second pressure gauge 203 and second flowmeter 204,
Wherein centrifugal pump 201 provides the water of required flow and pressure for drop generating device, and the second pneumatic operated valve 202 is supplied for accurately adjusting
The liquid phase flow Q of water systeml, fluid pressure p of the second pressure gauge 203 for liquid phase entrancel, second flowmeter 204 is for monitoring
The liquid phase flow Q of liquid phase entrancel。
Air supply system includes: air compressor 301；Air accumulator 302；First pneumatic operated valve 303；First pressure gauge 304 and
Flow meters 305, wherein air-source is delivered to air accumulator 302, in large volume for providing air-source by air compressor 301
Air accumulator 302 in store a large amount of air, convenient for providing more stable gas source, the first pneumatic operated valve 303 is for accurately adjusting
The gas phase flow rate Q of air supply systemg, pressure gauge is for monitoring the gas pressure p of gas phase entranceg, first flowmeter 305 is for monitoring
The gas phase flow rate Q of gas phase entranceg。
According to one embodiment of present invention, liquid phase flow QlFor 50m3/ h, gas phase flow rate Qg, gas phase volume flow rate and liquid
Phase volume flow-rate ratio is Q=30, and gas phase mass flow and liquid phase quality flow-rate ratio are M, fluid pressure plFor 0.7MPa, gas phase is drawn
Flow the gas pressure p in chamber 12gFor 0.2MPa, the pressure p of the two-phase mixture after diffuser 50dFor 0.3MPa, rectification
The quantity of third through-hole 81 on plate 80 is 40 and is uniformly distributed.
Specifically, liquid phase inlet connection is equipped at liquid phase entrance 14, water flows into ontology 10 from liquid phase inlet connection,
And entering liquid phase inlet chamber 11, the jet pipe orifice plate 60 by connecting jet pipe 20 is assigned in each jet pipe 20, jet stream
The quantity of pipe 20 is 3, and water reaches nozzle 70 by necking end in jet pipe 20, is sprayed from the hole of nozzle 70, is formed
Jet stream fluid column.Nozzle 70 is equipped with 1 the second through-hole of first through hole 71 and 8 72, and first through hole 71 is located at the center of nozzle 70
And it is coaxial with nozzle 70,8 the second through-holes 72 are located at the periphery of nozzle 70 along the circumferential equal spacings of nozzle 70.Nozzle 70
First through hole 71 and the second through-hole 72 diameter calculation process such as formula (1-2) and (2-1) calculated.Water is transported in jet pipe
The process sprayed to nozzle 70 is moved, flow velocity gradually rises, pressure gradually decreases, and is exported between throat 33 in nozzle 70, liquid phase
Flow velocity reaches highest, and pressure minimizes, according to the geometry designs of drop generating device 100, the shape in two-phase mixtures chamber 13
At vacuum.
The pressure reduction of two-phase mixtures chamber 13 plays the role of drainage to air, due to the gas at gas phase entrance 15
Pressure is greater than 0, then air can drain chamber 12 by gas phase and be inhaled into two-phase mixtures chamber 13, and wherein air and water obtain sufficiently
Mixing.In two-phase mixtures chamber 13, the distance between nozzle 70 and throat 33 are if fluid-wall surface friction if too long
It loses larger, and thicker shock wave can be formed in two-phase mixtures chamber 13；Two-phase cannot be sufficiently mixed if too short, should be away from
It is designed from by calculating process.According to liquid surface instability theory, fluid column surface forms perturbation wave, and disturbance wave amplitude increases,
When growth rate reaches maximum value, fluid column is broken into big drop.When two-phase speed difference exists, big drop deform and
Broken, the broken of big drop is determined by We number.
Big drop continues to be crushed after entering trunnion 30 in two-phase mixtures chamber 13, is become according to dual-phase jet internal flow state
Change it is theoretical, in the trunnion 30 of certain length, since the input end 32 of trunnion 30, sequentially form two-phase relative motion region,
Liquid drip flow region, foam-like flow region.The Design of length of trunnion 30 is two-phase relative motion region and liquid drip flow region.
The design and adjustment gaseous fluid of drop generating device 100 through the embodiment of the present invention and the flow velocity of liquid phase fluid can be adjusted
Whole We number obtains the drop of required diameter distribution.Observation window and level height shooting machine are set in 31 position of ejection end of trunnion 30, used
The form and distribution parameter of drop are generated in observation and record, the drop parameter actually observed is used for amendment design value, for gas
Liquid two-phase thermohydraulics experimental rig provides the quantitative input condition of drop field, the calculating process of droplet distribution parameter such as formula
Shown in (22-1) to (22-7), the diameter distribution profile for the drop for calculating as shown in Figure 4, calculate drop generating device structure
Parameter and drop parametric results are as shown in table 1.
Table 1
To sum up, drop generating device 100 according to an embodiment of the present invention, is drawn by liquid phase inlet chamber 11, gas phase
The structure design for flowing chamber 12 and two-phase mixtures chamber 13, is equipped with jet pipe 20, two-phase mixtures chamber in liquid phase inlet chamber 11
Room 13 is communicated with trunnion 30, and first medium draws in the acceleration of 22 position of the outlet end of jet pipe 20, decompression from gas phase drainage chamber 12
Enter second medium, first medium and second medium and form the medium with certain size in two-phase mixtures chamber 13, simultaneously also
Realize energy-efficient drainage way.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (16)
1. a kind of drop generating device characterized by comprising
Ontology defines liquid phase inlet chamber, gas phase drainage chamber and two-phase mixtures chamber, the liquid phase entrance in the ontology
Chamber and the gas phase drainage lumens interventricular septum open and respectively with the two-phase mixtures chamber, the ontology be equipped with and the liquid
The liquid phase entrance of phase inlet chamber connection and the gas phase entrance that chamber is drained with the gas phase；
Jet pipe, the jet pipe are located in the ontology, and the arrival end of the jet pipe is connected to the liquid phase inlet chamber,
The radial dimension of the outlet end of the jet pipe and the two-phase mixtures chamber, the outlet end is less than the arrival end
Radial dimension；
Trunnion, the trunnion are located in the ontology, the input end of the trunnion and the two-phase mixtures chamber, the larynx
The ejection end of pipe is for spraying medium.
2. drop generating device according to claim 1, which is characterized in that the section of the ontology is generally formed into square
Shape, the liquid phase inlet chamber be located at one end of the ontology and along the width direction of the ontology extend, the jet pipe and
The trunnion extends along the length direction of the ontology respectively, and the two-phase mixtures chamber is located at the jet pipe and the trunnion
Between.
3. drop generating device according to claim 1 or 2, which is characterized in that the liquid phase entrance and the gas phase enter
Mouth is respectively provided at the opposite sides of the ontology in the longitudinal direction.
4. drop generating device according to claim 1 or 2, which is characterized in that the gas phase drainage chamber substantially forms
For column, the closed at one end and other end and the two-phase mixtures chamber of the gas phase drainage chamber, the gas phase entrance
It is located at the side of the gas phase drainage chamber, the jet pipe is plugged in gas phase drainage lumens room and the outlet end is stretched out
The gas phase drains chamber.
5. drop generating device according to claim 4, which is characterized in that the other end of the gas phase drainage chamber and institute
The outlet end for stating jet pipe is respectively formed as necking, and the two-phase mixtures chamber is located at the gas phase drainage chamber and the jet stream
The necking end of pipe.
6. drop generating device according to claim 1, which is characterized in that discharge chamber is defined in the ontology, it is described
The ejection end of trunnion protrudes into the discharge chamber.
7. drop generating device according to claim 1 or 6, which is characterized in that the ejection end of the trunnion is formed as spacious
Mouthful.
8. drop generating device according to claim 1, which is characterized in that the gas phase drainage chamber and the two-phase are mixed
Conjunction chamber is respectively multiple, and multiple gas phases drainage chambers are distributed along the spaced apart width wise of the ontology, each described
The jet pipe is respectively equipped in gas phase drainage lumens room, the trunnion is multiple and corresponds respectively with the jet pipe.
9. drop generating device according to claim 8, which is characterized in that further include: jet pipe orifice plate, the jet pipe
Orifice plate is located at the liquid phase inlet chamber so that medium to be assigned in multiple jet pipes.
10. drop generating device according to claim 1, which is characterized in that further include:
Nozzle, the nozzle are located at the outlet end and are formed as round, the nozzle be equipped with along its axially through it is first logical
Hole and multiple second through-holes, the first through hole are located at the center of the nozzle and coaxial with the nozzle, and multiple described second
Through-hole is along the circumferentially-spaced periphery for being provided with the nozzle of the nozzle.
11. drop generating device according to claim 1, which is characterized in that further include: cowling panel, the cowling panel are set
In the trunnion and the neighbouring ejection end, the cowling panel are formed as round, the cowling panel be equipped with along its axially through
Multiple third through-holes, multiple third through-hole intervals are provided on the cowling panel.
12. drop generating device according to claim 11, which is characterized in that at least part third through-hole is along institute
That states cowling panel is radially spaced arrangement.
13. drop generating device according to claim 1, which is characterized in that the outlet end of the trunnion is equipped with observation window
With level height shooting machine by for observe and record generate drop in the form of and distribution parameter.
14. drop generating device according to claim 1, which is characterized in that the length of the trunnion is the trunnion
4-7 times of diameter.
15. drop generating device according to claim 10, which is characterized in that between the nozzle and the trunnion away from
From 1.2 times -1.6 times of the diameter for being the jet pipe.
16. drop generating device according to claim 1, which is characterized in that the ontology be formed as Pyrex glass workpiece or
Quartz glass part.
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| CN112788918A (en) * | 2020-12-23 | 2021-05-11 | 中车大连机车研究所有限公司 | Turbulent flow jet cooling device for porous medium |
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