CN204469285U - A kind of based on screw type gas-liquid separator under the microgravity of porous material - Google Patents
A kind of based on screw type gas-liquid separator under the microgravity of porous material Download PDFInfo
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- CN204469285U CN204469285U CN201520100659.4U CN201520100659U CN204469285U CN 204469285 U CN204469285 U CN 204469285U CN 201520100659 U CN201520100659 U CN 201520100659U CN 204469285 U CN204469285 U CN 204469285U
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Abstract
The utility model discloses a kind of based on screw type gas-liquid separator under the microgravity of porous material, comprise housing, this housing is provided with fluid-mixing import, gas-phase working medium outlet and liquid phase working fluid outlet, is provided with: what be positioned at described housing axle center place hates liquid phase porous material post in described housing; Be positioned at the lyophily phase porous material layer of described inner walls; Hate deflection plate between liquid phase porous material post with lyophily phase porous material layer, that arrange along housing axial screw described in being located at, deflection plate dual-side is fixed with hating liquid phase porous material column outer wall and lyophily phase porous material layer inwall respectively.This shows, what the utility model proposes a kind ofly combines the advantage of static separation device and dynamic separator based on screw type gas-liquid separator under the microgravity of porous material, also overcomes respective weak point simultaneously.The advantages such as it is large that the utility model has gas-liquid separation amount, do not consume energy, and reliability is high, will have extraordinary application prospect under microgravity environment.
Description
Technical field
The utility model relates to a kind of gas-liquid separator, is specifically related to a kind of based on screw type gas-liquid separator under the microgravity of porous material.
Background technology
Since eighties of last century fifties, aerospace industry is flourish, the activity of the mankind in space is more and more frequent, the development level of aerospace industry has become an important indicator of the evaluation one state capacity of scientific research, wherein, fluid management technology under microgravity, as the important component part of space technology, is subject to the most attention of various countries.Microgravity Fluid administrative skill refers to by controlling processes such as the transporting of the fluid in microgravity environment, storages, thus certain system is run and completes required function.From the angle of engineer applied, under microgravity, fluid management technology is mainly used in the following system of spacecraft: 1) propellant management system, propellant control system: the core level fuel of spacecraft generally adopts the low temperature LH of high specific impulse
2, LO
2fuel, fluid management technology is mainly used in the storage of cryogen, transport and filling process in flow control process.In addition, spacecraft in orbit time, the pressure-increasing unit process of cryogenic propellant, the processes such as the control of slosh also need this technology; 2) material regeneration, environmental control and life support system: this system is called for short regeneration ring Ore-controlling Role, this link relates to the inner H of spacecraft
2o, CO
2deng circulation, therefore the temperature and humidity regulation of working environment, and the life security being directly connected to spacefarer are one of key technologies of manned space flight.Spacecraft is as a miniature artificial ecological environment, and the processes such as the collection of the liquid of the process of inner gas temperature field and the distribution in flow field, the control, spacecraft waste water etc. of temperature and humidity and purification, carbon dioxide reduction process, space suit inside and discharge all relate to the fluid management technology under microgravity.3) power supply and control system: fuel cell, owing to having high-energy-density, does not exist the advantages such as overshoot, makes it have extraordinary application prospect at space industry.The electrolysis two-phase flow of water under microgravity, the rule of heat and mass transfer is obviously different from ground, hydrogen and oxygen is realized from the isolation technics of water also unusual complexity at electrode tip, water is as the modal product of fuel cell, and the performance of the water management under microgravity on fuel cell has important impact.4) spacecraft thermal control system: along with progressively going deep into of space research, the caloric value of the electronic equipment of the high-precision end applied is increasing.Because biphase gas and liquid flow has very high heat transfer coefficient, be therefore widely used in the thermal control field of electronic device under microgravity.The control working medium of thermal control system inside being carried out to efficient flow, temperature, component etc. is the important prerequisite that thermal control system plays usefulness.
Gas-liquid separation technology, as an important component part of fluid management, is subject to extensive concern both domestic and external, and gas-liquid separation means common under Chang Chongli have gravity separation, baffling partition method, centrifugal separation and filling partition method etc.These separation methods can be divided into following two large classes according to the principle be separated: 1) utilize the density contrast of component to be separated: the density value of gas phase is generally much smaller than the density of liquid phase value of working medium of the same race, therefore the density contrast of gas phase and liquid phase working fluid can be utilized to realize being separated of gas and liquid, this separation method is the most frequently used, also the simplest.Such as gravity separation, centrifugal separation etc.; 2) the coherent condition difference in fluid-mixing is utilized to be separated: the coherent condition of fluid molecule is different from the coherent condition of gas molecule in space, therefore its coherent condition can be utilized to carry out being separated of liquid and gas, such as pellicle partition method, fill partition method, silk screen partition method, micropore partition method etc.Typically, the separating property of gravity separation is relatively low, when the gas-liquid separation degree required for system requires higher, can select baffling partition method, centrifugal separation, or even silk screen partition method and micropore partition method etc.
Above mentioned gas-liquid separating method can be good at the separation realizing gas-liquid under Chang Chongli, and can not directly utilize under microgravity environment, mainly because have visibly different feature under the Liquid Flow under microgravity environment and Chang Chongli.Under microgravity environment, the impact of the buoyancy caused by gravity on bubble almost disappears, the effect of some surface forces (as surface tension and hot capillary force etc.) significantly strengthens, and the physical phenomenons such as wetting, contact angle hysteresis, the thermocapillary convection that cause thus dominate the whole process of phase-change heat-exchange.But because the order of magnitude of surface force is very little, the bubble therefore produced in phase transition process becomes difficulty from the disengaging of the area of heating surface.Generally speaking, the diameter producing bubble under microgravity in phase transition process is the several times under Chang Chongli equal conditions.Also have same rule for the flow pattern of gas-liquid two-phase flow in microgravity environment, the disappearance of buoyancy makes liquid phase and gas phase mutually mix, and does not occur layering.Therefore the effect of gravity can not be relied under microgravity environment to realize gas-liquid separation, its structure of gas liquid separator must be designed targetedly.
At present, the gas-liquid separating method under microgravity has static separation method and Dynamic Separation method two kinds of methods, and static separation method mainly realizes the gas-liquid separating method under microgravity by capillarity, UF membrane effect etc.Design philosophy based on capillarity separation method is the separation process utilizing the wetting characteristics difference of liquid phase to some special materials to carry out gas-liquid.For the gas-liquid separation process of water, the hydrophobic character of the water absorption character of absorbent material, hydrophobic material is mainly utilized to carry out gas-liquid separation, in gas-liquid separator, this kind of design of material becomes porous channel, better wetting inside water wetted material of the working medium of liquid phase, formation liquid film can be progressively sprawled on its surface, therefore the water wetted material of porous is separated from mixed flow as " passage " of liquid phase working fluid, and its driving force comes from the capillary force that porous hydrophilic material is formed.In like manner, the porous material be made up of hydrophobic material defines " passage " of gas-phase working medium, under the effect of liquid phase " passage " and gas phase " passage ", thus realizes the separation of gas-liquid.For the gas-liquid separator designed based on capillarity separation principle, the pore size of porous material, the selection of water wetted material is larger for the separating property impact of separator.As can be seen here, it is few that static separation method has power consumption, movement-less part, the advantages such as easy care.But the fractional dose in its unit interval is few, separating rate is slow, and water wetted material etc. easily pollute, and during work, disruptive pressure is subject to the selectional restriction of parameter, is therefore generally applied to the subsystem of Temperature and Humidity Control, the recycling assembly etc. of carbon dioxide.Dynamic Separation method mainly utilizes centrifugal force etc. to realize being separated of gas in gas-liquid mixed stream and liquid, due to the density difference in size of gas and liquid, when fluid-mixing rotates with certain angular velocity of rotation, bubble can more be gathered in the less region of radius, the working medium of liquid phase is then gathered in the larger region of radius, thus the structure of the center that formed " gas column " and outside " pendular ring ", then by special gas-liquid separation pipeline, liquid working substance is separated from the outside of cylindrical shell with inside respectively with gas-phase working medium.Dynamic gas liquid separating method under current microgravity has Pitot tubular type gas-liquid separator and drum-type gas-liquid separator.Dynamic Separation method fractional dose is large, and separating rate is fast, and stain resistance is strong, can by realizations such as circuit to its control.But the generation of centrifugal force field mainly utilizes and is realized by the rotation of the rotor of driven by motor, so there is moving component in separator, need during work to coordinate driver part, need consume additional power, also need the dynamic seal (packing) realized between rotor and Membrane Separator Cylinder for CFB Boiler.In addition, in order to control the waves and stability of liquid phase, also needing to be furnished with special checkout equipment etc., being therefore generally applied to the treatment system etc. of the waste water in spacecraft, sanitary water.Static separation method and Dynamic Separation method have respective advantage and application scenario, also have respective inferior position.
Through investigation, existing patent document utilize helical flow to produce centrifugal force field realizes being separated of gas phase and liquid phase.Patent document CN203737048U proposes a kind of industrial gas liquid/gas separator, and gas phase realizes with the helical baffles be separated by being arranged in Membrane Separator Cylinder for CFB Boiler inside of liquid phase, and arranges that in gas outlet silk screen further realizes the separation of gas-liquid.The document improves separating rate to a certain extent, but whole separation effect is poor; This patent document gas-liquid separation process under not being suitable for microgravity simultaneously.Patent document CN104043293A proposes a kind of helix tube type gas-liquid separator, Membrane Separator Cylinder for CFB Boiler internal placement has helical pipe and deflection plate, and all aperture is had on the inner side and deflection plate of helix tube, this hole is used for realizing the separation of liquid phase working fluid from pipe interior, this patent document equally just make use of the effect of centrifugal force in gas-liquid separation process, and there is no the effect of capillary force, the same technical problem that there is overall separation efficiency effectiveness comparison difference, and this patent document is not suitable for the gas-liquid separation process under microgravity yet.Patent document CN2396866Y proposes the rotary two-phase laminated flow device under a kind of microgravity, this device utilizes variable-speed motor rotor driven to move, thus realize being separated of gas-liquid, utilize simultaneously and arrange that the capillarity produced with the internal grid at wall place realizes the collection of liquid phase.Because the liquid phase separation process in this patent document does not utilize the effect of gravity, therefore, it is possible to be well applied to the gas-liquid separation process under microgravity, but the driving mechanisms such as motor are introduced due to patent, device is made to need extra mechanical device, and the sealing problem existed between rotor and cylindrical shell, the capillary force of adding wall internal grid is not enough, and the fractional dose of this separator is also restricted.
Utility model content
Little for overcoming static separation device fractional dose in prior art, the technical problems such as the power consumption of the moving component of driving force deficiency and dynamic separator, the utility model provides a kind of based on screw type gas-liquid separator under the microgravity of porous material, this gas-liquid separator can realize being separated of gas phase and liquid phase smoothly in microgravity environment, fractional dose is large simultaneously, and movement-less part energy consumption.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is as follows respectively:
Based on a screw type gas-liquid separator under the microgravity of porous material, comprise housing, this housing is provided with fluid-mixing import, gas-phase working medium outlet and liquid phase working fluid outlet, is provided with in described housing:
What be positioned at described housing axle center place hates liquid phase porous material post;
Be positioned at the lyophily phase porous material layer of described inner walls;
Hate deflection plate between liquid phase porous material post with lyophily phase porous material layer, that arrange along housing axial screw described in being located at, deflection plate dual-side is fixed with hating liquid phase porous material post and lyophily phase porous material layer respectively.
As preferably, described fluid-mixing import is arranged along housing tangential direction.Housing is generally cylindrical structural, adopts this technical scheme, can make full use of fluid-mixing enter separator after centrifugal action, improve the centrifugal force of fluid-mixing.
As preferably, described fluid-mixing import and the outlet of described gas-phase working medium are located at and are hated above liquid phase porous material post and lyophily phase porous material layer, and described liquid phase working fluid outlet is located at and is hated below liquid phase porous material post and lyophily phase porous material layer.Adopt this technical scheme, further enhancing the centrifugal action of fluid-mixing.Liquid phase working fluid outlet can be arranged in the bottom surface of shell separator, and the side etc. of shell separator, special design can be carried out according to used occasion in concrete position.
As preferably, described lyophily phase porous material layer bottom is closed by lyophily phase porous material base plate; Liquid collecting room is formed between described lyophily phase porous material base plate bottom surface and housing bottom; Described liquid phase working fluid outlet is communicated with described liquid collecting room.The setting of lyophily phase porous material base plate, ensures that the liquid two-phase in fluid-mixing is fully separated, and liquid collecting room act as the liquid phase working fluid collected and collect through lyophily phase porous material, also can regulate corresponding flow during separation working medium simultaneously.
As preferably, in described lyophily phase porous material layer, the pore size of porous material is 0.1 ~ 100 μm, and this aperture of porous material reduces gradually from top to bottom.In lyophily phase porous material layer, porous material is for hating liquid phase material, and its selection is relevant to the selection of liquid phase working fluid.In order to make progressively to increase along the capillary force in the gas-phase working medium direction of motion, the aperture of this porous material progressively diminishes from the bottom up.
As preferably, described in hate the pore size of porous material in liquid phase porous material post to be 0.1 ~ 100 μm, and this aperture of porous material reduces gradually from bottom to top.Hate porous material in liquid phase porous material post to be lyophily phase material, the selection of its material is relevant to the selection of liquid phase working fluid, lyophily phase material can not soak by liquid phase working fluid.In order to make progressively to increase along the capillary force in the liquid phase working fluid direction of motion, the aperture of this porous material progressively diminishes from top to bottom.
As preferably, described gas-phase working medium outlet with hate liquid phase porous material post coaxially to arrange, described case top inwall is provided with and exports with gas-phase working medium the nozzles with injector aligned.In order to the gradient of mineralization pressure on the circulation passage of gas-phase working medium, near the outlet of this gas-phase working medium, be furnished with nozzles with injector, the pressure of the gas-phase working medium after by nozzles with injector is reduced.As preferably, after fluid-mixing is separated, if the flow velocity of gas-phase working medium is less than local velocity of sound, then jet pipe is chosen as towards the jet pipe of hating liquid phase porous material post convergent; If the flow velocity of gas-phase working medium is greater than local velocity of sound, then jet pipe is chosen as towards the jet pipe of hating liquid phase porous material post flaring.
In the utility model, hate liquid phase porous material post to adopt wick structure, described nozzles with injector is positioned at the top of center capillary wick, and the axis of its axis and capillary wick, separator point-blank.The curve form of its pipeline may be selected to be logarithmic curve, parabolic curve, the forms such as hyperbola, can design as requested during concrete use.
As preferably, described in hate the diameter of liquid phase porous material post and the size of housing interior diameter to be 1:8 ~ 1:3.The described thickness of lyophily phase porous material layer and the size of housing interior diameter are 1:8 ~ 1:3.
In the utility model, hating the thickness of the diameter of liquid phase porous material post and lyophily phase porous material layer can select according to service condition, when needing the gas-phase working medium in the fluid-mixing be separated more, the radius of liquid phase material of hating at axis place should be become large; When needing the liquid phase working fluid in the fluid-mixing be separated more, lyophily phase material porous material radius should be become large.As preferably, described in hate the diameter of liquid phase porous material post to be 1:0.05 ~ 1:5. with the ratio of the thickness of lyophily phase porous material layer
In the utility model, described hate liquid phase porous material post that various ways can be adopted to realize with housing fixing, general employing supporting plate structure, adopt the gripper shoe of annular, realize hating fixing of liquid phase porous material post and inner walls, wherein gripper shoe is evenly arranged along the circumference of pipeline, and its quantity can design according to practical application, its material be chosen as with work in the material of fluid compatible.
In order to ensure centrifugal effect when fluid-mixing moves on helical baffles, extend the time of its motion, as preferably, the helical angle of described deflection plate is 10 ~ 40 ° simultaneously.Deflection plate can adopt with the connection hated between liquid phase porous material post and lyophily phase porous material layer modes such as welding, bonding.The Material selec-tion of this deflection plate need with to be separated working medium compatible.Fluid flows along helical baffles in the separator, between the porous material that arrangement of baffles forms in the capillary wick of hating liquid phase porous material to form and lyophily phase material, because working medium can to the strong effect in the junction of helical baffles and porous material in motion process, in order to ensure the intensity of junction, the connection between deflection plate and porous material adopts the modes such as spot welding.
Operation principle based on screw type gas-liquid separator under the microgravity of porous material of the present utility model flows through after fluid-mixing import enters into this gas-liquid separator for: gas-liquid two-phase formed in micro-gravity conditions, due to the weakening of the buoyancy that gravity causes, gas phase and liquid phase are not separated, but " be full of " internal cavity of gas-liquid separator together, after the volume entering the working medium in separator reaches certain value, working medium will do centrifugal motion along helical baffles in gas-liquid separator, because the density of liquid is larger, and the density of gas is less, therefore, liquid is mainly distributed in the larger place of radius under the influence of centrifugal force, gas is then in the less region of radius, namely the distribution of inside " gas column " and outside " pendular ring " is formed.Be positioned at outside liquid phase material owing to can be good at wetting lyophily phase material, therefore will sprawl at this material surface and come, simultaneously, because the aperture of the porous material the closer to liquid phase working fluid exit portion is less, the capillary force produced also progressively becomes large, liquid phase working fluid just moves to liquid collecting room under the effect of this capillary force, and then is separated from liquid-phase outlet.Be positioned at inner gas-phase working medium then to be collected by the porous material at axis place, and it is larger the closer to the capillary force at top, when gas-phase working medium flows out from the top of capillary wick, enter nozzles with injector, the existence of nozzles with injector makes the pressure of gas-phase working medium diminish, and flow velocity increases, and then be separated gas-liquid separator by gas-phase working medium outlet.
The utility model is compared with Dynamic Separation technology with existing static separation technology, has following outstanding advantage, is specifically expressed as follows:
1) static separation device mainly realizes the gas-liquid separation under microgravity by the combination of membrane structure, lyophily phase material etc., its driving force is mainly capillary force, although the separation of gas-liquid therefore can be realized under microgravity environment, but its fractional dose is little, and the concentration, pressure etc. of working medium are limited to some extent, such as when adopting lyophily phase material, pressure reduction before and after working medium is separated must be less than certain value, otherwise porous material will " be punctured " or be produced " blocking " effect that bubble causes, and make separating effect be deteriorated.What the utility model proposed a kind ofly also can be good at realizing the separation of gas-liquid under microgravity based on screw type gas-liquid separator under the microgravity of porous material, because the phase separation of working medium is except adopting the capillary force of lyophily phase material, also use the centrifugal force field produced when fluid-mixing moves on helical baffles, therefore driving force is larger, makes gas-liquid separation amount during this kind of gas-liquid separator work larger.Simultaneously due to the effect of centrifugal force field, make the working medium near lyophily phase material be liquid phase working fluid, and be gas-phase working medium near what hate liquid phase material, therefore substantially improve " puncturing " and " blocking " effect that porous material causes.Therefore, the utility model compares static separation utensil larger motive force, and larger fractional dose, not easily occurs significant advantages such as puncturing.
2) dynamic separator mainly relies on being stirred in gas-liquid separator of moving component (as rotor etc.) to realize centrifugal force field, and the motion of moving component needs to consume extra power, and be arranged in the outside of separator due to general drives structure, therefore also there will be the movable sealing problem between rotor and shell separator.What the utility model proposes is a kind of based on screw type gas-liquid separator under the microgravity of porous material, although there is no moving component, but adopt the unique design of circulation passage, achieve the centrifugal force field of working medium equally, and make working medium being separated in this centrifugal force field.Meanwhile, after being separated by centrifugal force field, utilizing lyophily phase material and hate liquid phase material to carry out collection liquid phase working fluid and gas-phase working medium, combining again the advantage of static separation device.Owing to not using moving component and external drive structure, combine again the advantage of static separation device, therefore the utility model is compared dynamic gas liquid separating apparatus and is had and do not consume energy, the advantages such as reliability is high, simplicity of design simultaneously.
This shows, what the utility model proposes a kind ofly combines the advantage of static separation device and dynamic separator based on screw type gas-liquid separator under the microgravity of porous material, also overcomes respective weak point simultaneously.The advantages such as it is large that the utility model has gas-liquid separation amount, do not consume energy, and reliability is high, will have extraordinary application prospect under microgravity environment.
Accompanying drawing explanation
A kind of internal structure schematic diagram based on screw type gas-liquid separator under the microgravity of porous material that Fig. 1 proposes for the utility model;
Fig. 2 is for separator shown in Fig. 1 is along the top view in A-A face.
In above-mentioned accompanying drawing:
1, fluid-mixing import, 2, lyophily phase porous material layer, 3, housing, 4, gas-phase working medium outlet, 5, nozzles with injector, 6, hate liquid phase porous material post, 7, deflection plate, 8, gripper shoe, 9, liquid collecting room, 10, liquid phase working fluid outlet, 11, lyophily phase porous material base plate.
Detailed description of the invention
As shown in Figures 1 and 2, the utility model proposes a kind of based on gas-liquid spiral under the microgravity of porous material, this separator by the housing 3 of separator, fluid-mixing import 1, gas-phase working medium outlet 4, lyophily phase porous material layer 2, lyophily phase porous material base plate 11, hates liquid phase porous material post 6, nozzles with injector 5, the deflection plate 7 of screw arrangement, gripper shoe 8, liquid collecting room 9 and liquid phase working fluid outlet 10 composition.On the sidewall at fluid-mixing import setting and housing 3 top, its axis is arranged along the tangential direction of shell separator 3, is provided with the lyophily phase porous material layer 2 be made up of lyophily phase porous material circularizing layout at the wall place of shell separator 3.Be furnished with by the capillary wick of hating liquid phase porous material to form at the central axis place of housing 3, namely hate liquid phase porous material post 6, this hates being linked as bonding or welding of liquid phase porous material post 6 and shell separator 3.In order to make fluid-mixing form centrifugal force field in motion process, the deflection plate 7 that spiral declines is arranged in hates between liquid phase porous material post 6, lyophily phase porous material layer 2.
Shell separator 3 top center is located in gas-phase working medium outlet 4; Shell separator 3 bottom centre position is located in liquid phase working fluid outlet 10; Shell separator 3 top inner wall is fixed with in nozzles with injector 5, Fig. 1, and nozzles with injector 5 is that Open Side Down, and is that enlarging is gradually arranged.That hates by gripper shoe 8 and inner walls bottom liquid phase porous material post 6 is fixing; Be provided with lyophily phase porous material base plate 11 bottom lyophily phase porous material layer 2, form overall structure.Liquid collecting room 9 is formed between lyophily phase porous material base plate 11 bottom surface and shell separator 3 bottom interior wall.Wherein the helical angle of deflection plate is 10 ~ 40 °.
When fluid-mixing flows at spiral deflection plate 7, the effect due to centrifugal force achieves being separated of liquid phase and gas-phase working medium, and wherein liquid phase working fluid is gathered in the larger region of radius, and gas-phase working medium is gathered in the less region of radius.Owing to being furnished with lyophily phase porous material near wall place, therefore liquid phase working fluid will be sprawled at this material surface, and then be collected into liquid collecting room, and be separated in the liquid phase working fluid outlet 10 of separator.Gas phase, then by hating the collection of liquid phase porous material, exporting 4 by gas-phase working medium after the step-down of nozzles with injector 5 and isolating this separator.
Further illustrate the embody rule of technique scheme below, technique scheme be described further simultaneously:
Embodiment 1
In order to reduce the pressure of the logistics support in space mission, the CO in spacecraft
2and H
2the disposal and recovery of the materials such as O mainly relies on regeneration annular space and life support system, and gas-liquid separation process is a key link in this system.This example illustrates that the utility model proposes a kind of is regenerating the application in annular space and life support system based on gas-liquid spiral under the microgravity of porous material.Setting the material reclaimed is aqueous water, in this embodiment wall porous material be chosen as water wetted material (as poly-propionitrile material, polysulfone material etc.), and the capillary wick at center is chosen as hydrophobic material (such as polytetrafluoroethylmaterial material etc.).This separator liquid phase outlet 10 is arranged in housing 3 bottom centre, and therefore the density distribution of wall porous material as shown in Figure 1.
Water in spacecraft is collected in " wastewater collection casing " before entering recovery, after the pretreatment systems such as filtration, flow in this gas-liquid separator through fluid-mixing import 1.After gas-liquid mixture fluid enters into gas-liquid separator, download in the effect of helical baffles 7 water forming liquid phase in the larger region of radius, and in the region that radius is less, form the water of gas phase.For lyophily phase porous material layer 2, because the aperture of the porous material exporting 10 places the closer to liquid working substance is less, the capillary force be therefore subject near the liquid phase at liquid-phase outlet place is larger, and hydrophilic porous material now defines the circulation passage of liquid water.And the water of gas phase is collected by the porous material at central axis place, after the step-down of nozzles with injector 5, separated by gaseous phase outlet 4.It should be noted that, this gas-liquid separator is applied to CO
2during the steam separation process for the treatment of system, its course of work and separation principle therewith embodiment are similar.
In order to a kind of advantage based on gas-liquid spiral under the microgravity of porous material that the utility model proposes and practicality are better described, be used for the advantage in the gas-liquid separation process under microgravity below by calculation specifications the utility model.Suppose that the diameter of separator is 30cm, height size is 60cm.Aqueous favoring porous material near wall place is poly-propionitrile material, and the thickness of the lyophily phase porous material layer 2 of its composition is 6cm.Central axis place hates liquid phase porous material to be polytetrafluoroethylmaterial material, and the diameter of liquid phase porous material post 6 of hating of its composition is 6cm.The width of helical baffles 7 is 6cm, and thickness is 2mm, and helical angle is 20 °, and its length is 1.5m.Nozzles with injector 5 is convergent jet pipe upwards.The pore size of hydrophilic porous material and hydrophobic porous material all progressively changes to 10 μm from 50 μm.The temperature at fluid-mixing import 1 place is 25 DEG C, and working medium inlet velocity is 3m/s, and void fraction is 0.5, and water surface tension is at such a temperature 0.072N/m.Because liquid phase working fluid resistance is in the porous material comparatively large, if assuming that when the pressure drop of liquid phase working fluid in lyophily phase material equals the driving force of working medium motion, separator now reaches maximum working medium fractional dose.The performance comparison of the Static Gas liquid/gas separator without helical baffles that the driving force of gas-liquid separator working medium motion now under the microgravity that proposes of this utility model and the flow of working medium and conventional same parameter design is as shown in table 1.
The performance comparison of table 1 the utility model and common static gas-liquid separator
Can find from the comparison process of table 1, the gas-liquid separator based on capillarity design of a kind of driving force based on screw type gas-liquid separator under the microgravity of porous material that the utility model proposes and the maximum separation flow-rate ratio routine of separator is all large.Therefore there is better application prospect.
Embodiment 2
It is a kind of based on the application of screw type gas-liquid separator in steam compression system under the microgravity of porous material that this example illustrates that the utility model proposes.Setting the working medium adopted in this example is R134a, and the porous material in tube wall face is chosen as material that R134a can soak very well and the capillary wick at center is chosen as the material that R134a can not soak very well.This separator liquid phase outlet 10 is arranged in bottom centre, and therefore the density distribution of wall porous material as shown in Figure 1.
When the R134a of gas-liquid two-phase stream mode flows into after this gas-liquid separator through fluid-mixing import 1, motion of spinning in the separator under the effect of helical baffles 7.Due to the difference of the density of the R134a of gas phase and the R134a of liquid phase, under the effect of centrifugal force field, the R134a of gas phase and the R134a of liquid phase is distributed in the less region of radius and the larger region of radius respectively.The porous material of R134a near wall place of liquid phase, and the R134a of gas phase is near the porous material at central axis place.R134a due to liquid phase can be good at the porous material at wetting wall place, progressively will sprawl at this material internal and come, because the aperture near liquid-phase outlet place is less, therefore the capillary force be subject to the closer to the R134a of the liquid phase in liquid phase working fluid exit is larger, and wall porous material now just defines the circulation passage of the R134a of liquid phase.The R134a of gas phase is then collected by the porous material of center, and because the aperture of the capillary wick near jet pipe place is less, therefore the porous material of center defines the circulation passage of the R134a of gas phase.The R134a of gas phase, after nozzles with injector step-down, is separated from gaseous phase outlet.So far, gas-liquid mixture R134a two phase flow is separated into the R134a of independent liquid phase and the R134a of independent gas phase.
In order to the advantage of this patent at separation gas liquid two-phase is better described, be described below by calculating.Suppose that the diameter of separator is 30cm, height size is 60cm.Porous material near wall place is close R134a liquid phase porous material, and the thickness of the lyophily phase porous material layer 2 of its composition is 6cm.Central axis place hates liquid phase porous material for hating R134a liquid phase porous material, and the diameter of liquid phase porous material post 6 of hating of its composition is 5cm.The width of helical baffles 7 is 8cm, and thickness is 2mm, and helical angle is 20 °, and its length is 1.5m.Nozzles with injector 5 is convergent jet pipe upwards.Parent's R134a porous material and hate the pore size of R134a porous material to be all progressively reduced to 10 μm from 50 μm.The temperature at fluid-mixing import 1 place is 25 DEG C, and working medium inlet velocity is 3m/s, and void fraction is 0.5, R134a surface tension is at such a temperature 0.0081N/m.Because liquid phase R134a flow resistance is in the porous material comparatively large, if assuming that when the pressure drop of liquid phase working fluid in lyophily phase material equals the driving force of working medium motion, separator now reaches maximum working medium fractional dose.Under this setting operating mode, the performance comparison of the Static Gas liquid/gas separator without helical baffles that the flow of the driving force that the gas-liquid separator working medium under the microgravity that this utility model proposes is moved and working medium and conventional same parameter design is as shown in table 2.
The performance comparison of table 2 the utility model and common static gas-liquid separator
As can be seen from table 2 equally, when the R134a being applied to gas-liquid two-phase stream mode is separated, the gas-liquid separator based on capillarity design of the maximum separation flow-rate ratio routine of the driving force based on screw type gas-liquid separator under the microgravity of porous material of the present utility model and separator is all large.
Embodiment 3
The oxygen used in current spacecraft is regenerated by brine electrolysis technology.In order to obtain the oxygen of gaseous state and excessive water be reclaimed, H must be carried out
2o-O
2separation process.It is a kind of based on the application of screw type gas-liquid separator in electrolysis oxygen generation system under the microgravity of porous material that the present embodiment explanation the utility model proposes.In this example wall porous material be chosen as water wetted material, and the capillary wick at center is chosen as hydrophobic material.The outlet of this separator liquid phase is arranged in bottom centre, and therefore the density distribution of wall porous material as shown in Figure 2.
Through pretreated H
2o-O
2fluid-mixing tangentially enters into this gas-liquid separator by fluid-mixing import, at the deflection plate through screw arrangement, due to the effect of centrifugal force, the oxygen of gaseous state and oxygen bubbles are distributed in the region of center capillary wick, and the water of liquid state is then mainly distributed in the porous material region at wall place.Under the effect of the capillary force that the water of liquid phase produces at hydrophilic porous material, progressively sprawl to liquid-phase outlet, and then collected by liquid-phase collection room, draw from liquid phase working fluid outlet.And after the capillary wick collection of the oxygen of gaseous state through central axis place, drawn from gaseous phase outlet after the step-down of nozzles with injector.So far, the H under microgravity is achieved
2o-O
2separation process.Because the liquid phase working fluid be separated is water herein, therefore the separating property of this separator is similar to embodiment.Its separating effect can be characterized by maximum working medium flow in separation, because water resistance is in the porous material larger, if assuming that when the pressure drop of water in lyophily phase material equals the driving force of working medium motion, separator now reaches maximum working medium fractional dose.Its result of calculation (wherein Material selec-tion, plant bulk, separation parameter equivalent integers 1) as shown in table 3.
The performance comparison of table 3 the utility model and common static gas-liquid separator
As can be seen from Table 3, H is being applied to
2o-O
2separation time, the gas-liquid separator based on capillarity design of the maximum separation flow-rate ratio routine of the driving force based on screw type gas-liquid separator under the microgravity of porous material of the present utility model and separator is all large.
Claims (10)
1. one kind based on screw type gas-liquid separator under the microgravity of porous material, comprise housing (3), this housing (3) is provided with fluid-mixing import (1), gas-phase working medium outlet (4) and liquid phase working fluid outlet (10), it is characterized in that:
Described housing is provided with in (3):
What be positioned at described housing (3) axle center place hates liquid phase porous material post (6);
Be positioned at the lyophily phase porous material layer (2) of described housing (3) inwall;
Hate deflection plate (7) between liquid phase porous material post (6) with lyophily phase porous material layer (2), that arrange along housing (3) axial screw described in being located at, deflection plate (7) dual-side is fixed with hating liquid phase porous material post (6) and lyophily phase porous material layer (2) respectively.
2. according to claim 1 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: described fluid-mixing import (1) is arranged along housing (3) tangential direction.
3. according to claim 1 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: described fluid-mixing import (1) and described gas-phase working medium outlet (4) are located at and are hated liquid phase porous material post (6) and lyophily phase porous material layer (2) top, described liquid phase working fluid outlet (10) is located at and is hated liquid phase porous material post (6) and lyophily phase porous material layer (2) below.
4. according to claim 3 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: described lyophily phase porous material layer (2) bottom is closed by lyophily phase porous material base plate (11); Liquid collecting room (9) is formed between described lyophily phase porous material base plate (11) bottom surface and housing (3) bottom; Described liquid phase working fluid outlet (10) is communicated with described liquid collecting room (9).
5. according to claim 4 based on screw type gas-liquid separator under the microgravity of porous material, in described lyophily phase porous material layer (2), the pore size of porous material is 0.1 ~ 100 μm, and this aperture of porous material reduces gradually from top to bottom.
6. according to claim 3 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: described in hate the pore size of liquid phase porous material post (6) interior porous material to be 0.1 ~ 100 μm, and this aperture of porous material reduces gradually from bottom to top.
7. according to claim 3 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: the helical angle of described deflection plate (7) is 10 ~ 40 °.
8. according to claim 3 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: described gas-phase working medium outlet (4) with hate liquid phase porous material post (6) coaxially to arrange, described housing (3) top inner wall is provided with the nozzles with injector (5) exporting (4) with gas-phase working medium and align.
9. according to the arbitrary claim of claim 1-8 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: described in hate the size of the diameter of liquid phase porous material post (6) and housing (3) interior diameter to be 1:8 ~ 1:3.
10. according to the arbitrary claim of claim 1-8 based on screw type gas-liquid separator under the microgravity of porous material, it is characterized in that: the thickness of described lyophily phase porous material layer (2) and the size of housing (3) interior diameter are 1:8 ~ 1:3.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667584A (en) * | 2015-02-12 | 2015-06-03 | 浙江大学 | Spiral type gas-liquid separator under micro-gravity based on porous material |
| CN106334346A (en) * | 2016-10-31 | 2017-01-18 | 中冶赛迪工程技术股份有限公司 | Composite pipe for conveying gas-liquid two-phase flow |
| CN113108508A (en) * | 2021-03-18 | 2021-07-13 | 清华大学 | Aerospace heat pump system and micro-gravity gas-liquid separator applied to aerospace heat pump system |
| CN113144676A (en) * | 2021-04-02 | 2021-07-23 | 上海灿越化工科技有限公司 | Novel mixed liquid degasser |
| TWI746317B (en) * | 2020-12-15 | 2021-11-11 | 國家中山科學研究院 | Gas-liquid separation device for electrolyzed water system |
-
2015
- 2015-02-12 CN CN201520100659.4U patent/CN204469285U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667584A (en) * | 2015-02-12 | 2015-06-03 | 浙江大学 | Spiral type gas-liquid separator under micro-gravity based on porous material |
| CN106334346A (en) * | 2016-10-31 | 2017-01-18 | 中冶赛迪工程技术股份有限公司 | Composite pipe for conveying gas-liquid two-phase flow |
| TWI746317B (en) * | 2020-12-15 | 2021-11-11 | 國家中山科學研究院 | Gas-liquid separation device for electrolyzed water system |
| CN113108508A (en) * | 2021-03-18 | 2021-07-13 | 清华大学 | Aerospace heat pump system and micro-gravity gas-liquid separator applied to aerospace heat pump system |
| CN113144676A (en) * | 2021-04-02 | 2021-07-23 | 上海灿越化工科技有限公司 | Novel mixed liquid degasser |
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