CN104667584B - Screw type gas-liquid separator under a kind of microgravity based on porous material - Google Patents
Screw type gas-liquid separator under a kind of microgravity based on porous material Download PDFInfo
- Publication number
- CN104667584B CN104667584B CN201510073875.9A CN201510073875A CN104667584B CN 104667584 B CN104667584 B CN 104667584B CN 201510073875 A CN201510073875 A CN 201510073875A CN 104667584 B CN104667584 B CN 104667584B
- Authority
- CN
- China
- Prior art keywords
- porous material
- phase
- liquid
- gas
- lyophily
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention discloses screw type gas-liquid separator under a kind of microgravity based on porous material, comprise housing, this housing is provided with mixed stream 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; It is positioned at the lyophily phase porous material layer of described inner walls; Hating traverse baffle between liquid phase porous material post with lyophily phase porous material layer, that arrange along housing axial screw described in being located at, traverse baffle dual-side is fixed with hating liquid phase porous material column outer wall and lyophily phase porous material layer inwall respectively. This shows, under a kind of microgravity based on porous material that the present invention proposes, screw type gas-liquid separator combines the advantage of static separation device and dynamic separator, also overcomes respective weak point simultaneously. It is big that the present invention has gas-liquid separation amount, does not consume energy, and the advantages such as reliability height, will have extraordinary application prospect under microgravity environment.
Description
Technical field
The present invention relates to a kind of gas-liquid separator, it is specifically related under a kind of microgravity based on porous material screw type gas-liquid separator.
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 developmental level of space industry becomes the important indicator evaluating state's capacity of scientific research, wherein, fluid management technology under microgravity, as the important component part of spationautics, is subject to the most attention of various countries. Microgravity fluid management technology refers to by the processes such as the transporting of the fluid in microgravity environment, storage being controlled, thus enables certain system run and complete required function. From the angle of engineer applied, under microgravity, fluid administrative skill is mainly used in the following system of space vehicle: 1) Propellant Management system: the core level fuel of spacecraft generally adopts the low temperature LH of high specific impulse2, LO2Fuel, fluid management technology is mainly used in the storage of low temperature fluid, transport and the flow control process in filling 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 spacecraft2O, CO2Deng circulation, therefore the temperature and humidity regulation of Working environment, and be directly connected to the life security of spacefarer is one of the gordian technique of manned space flight. Spacecraft is as a miniature artificial ecological environment, and the processes such as the collection of the liquid of inner gas temperature field and the process of the control of the distribution in flow field, temperature and humidity, spacecraft waste water etc. and purification, carbon dioxide reduction process, space suit inside and discharge all relate to the fluid management technology under microgravity. 3) power supply and Controlling System: fuel cell, owing to having high-energy-density, does not exist the advantages such as overshoot so that it has 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 technique of water also unusual complexity at electrode tip, water is as the most common product of fuel cell, and the performance of fuel cell is had important impact by the water management under microgravity. 4) spacecraft thermal control system: along with progressively going deep into of space research, the thermal value of the electronics of the high-precision end applied is increasing. Owing to biphase gas and liquid flow has very high heat transfer coefficient, the thermal control field being therefore widely used under microgravity electron device. The control that the working medium of thermal control system inside carries out 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 domestic and international extensive concern, and gas-liquid separation means common under Chang Chongli have gravity settling separation method, baffle separation method, centrifugal separation and filling partition method etc. These separation methods can be divided into following two big classes according to the principle of separation: 1) utilizes the density difference 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 difference of gas phase and liquid phase working fluid can be utilized to realize being separated of gas and liquid, this kind of separation method is the most frequently used, also the simplest. Such as gravity settling separation method, centrifugal separation etc.; 2) the state of aggregation difference in mixed stream is utilized to be separated: the state of aggregation of fluid molecule is different from the state of aggregation of gas molecule in space, therefore its state of aggregation can be utilized to carry out being separated of liquid and gas, such as semi-permeable membranes partition method, fill partition method, silk screen partition method, micropore partition method etc. Typically, the separation performance of gravity settling separation method is relatively low, when the gas-liquid separation degree required for system requires higher, it is possible to select baffle separation method, centrifugal separation, or even silk screen partition method and micropore partition method etc.
Above mentioned gas-liquid separating method can be good at realizing the separation of gas-liquid under Chang Chongli, and can not directly utilize under microgravity environment, mainly because microgravity environment under Liquid Flow and Chang Chongli under there is visibly different feature. Under microgravity environment, the impact of bubble is almost disappeared by the buoyancy caused by gravity, the effect of some surface forces (such as surface tension and hot capillary force etc.) significantly strengthens, the whole process of the leading phase-change heat-exchanges of physical phenomenon such as wetting, contact angle hysteresis, the thermocapillary convection thus caused. But owing to the order of magnitude of surface force is very little, the bubble therefore produced in phase transition process becomes difficulty from the disengaging 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 having 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 layering does not occur. Therefore the effect of gravity can not be relied under microgravity environment to realize gas-liquid separation, it is necessary to design its gas-liquid separator structure 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 wicking action, membrane sepn effect etc. Design philosophy based on wicking action separation method utilizes liquid phase that the wetting property difference of some exotic materialss is carried out the sepn process of gas-liquid. For the gas-liquid separation process of water, the water absorption character of water-absorbing material, the hydrophobic character of hydrophobic material is mainly utilized to carry out gas-liquid separation, in gas-liquid separator, this kind of material is designed to porous channel, the working medium of liquid phase inside water wetted material wetting better, can progressively sprawl on its surface and form liquid film, therefore the water wetted material of porous is separated from mixed flow as " passage " of liquid phase working fluid, and its motivating force comes from the capillary force that porous hydrophilic material is formed. With reason, the porous material being 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 wicking action separation principle, the pore size of porous material, the separation performance for separator of selecting of water wetted material affects bigger. It thus is seen that static separation method has power consumption less, movement-less part, the advantages such as easy maintenance. But the fractional dose in its unit time is few, velocity of separation is slow, and water wetted material etc. easily pollutes, and during work, disruptive pressure is subject to the selectional restriction of parameter, is therefore generally applied to the sub-system of Temperature and Humidity Control, the recycling assembly etc. of carbonic acid gas. Dynamic separation method mainly utilizes centrifugal force etc. to realize being separated of the gas in gas-liquid mixed stream and liquid, due to the density difference in size of gas and liquid, when mixed stream 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 bigger region of radius, thus form center " gas post " and the structure of outside " pendular ring ", then by special gas-liquid separation pipeline, liquid working substance is separated from the outside of cylinder with inside respectively with gas-phase working medium. Dynamic gas liquid separating method under current microgravity has Pitot tube formula gas-liquid separator and drum-type gas-liquid separator. Dynamic separation method fractional dose is big, and velocity of separation is fast, and stain resistance is strong, its control can be realized by circuit etc. But the generation of centrifuge field mainly utilizes the rotation by the rotor of driven by motor to realize, so separator exists moving parts, need during work to coordinate drive element, it is necessary to consume additional power, in addition it is also necessary to realize the dynamic seal between rotor and separator cylinder. In addition, in order to control the waves and stability of liquid phase, in addition it is also necessary to be furnished with special test set etc., the waste water that is therefore generally applied in spacecraft, the treatment system etc. of sanitary water. Static separation method and dynamic separation method have respective advantage and application scenario, also have respective inferior position.
Through investigation, existing patent documentation utilize helicoidal flow produce centrifuge field realizes being separated of gas phase and liquid phase. Patent documentation CN203737048U proposes a kind of industrial gas liquid/gas separator, and gas phase realizes with the helical baffles by being arranged in separator inner barrel that is separated of liquid phase, and arranges the separation realizing gas-liquid that silk screen is further in air outlet. The document improves velocity of separation to a certain extent, but whole separation effect is poor; This patent documentation gas-liquid separation process under not being suitable for microgravity simultaneously. Patent documentation CN104043293A proposes a kind of helix tube type gas-liquid separator, separator cylinder internal layout has helical pipe and traverse baffle, and all have aperture on the inner side and traverse baffle of spiral tube, this hole is used for realizing the separation of liquid phase working fluid from pipe interior, this patent documentation 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 the gas-liquid separation process that this patent documentation is not suitable under microgravity yet. Patent documentation CN2396866Y proposes the rotary two-phase laminated flow device under a kind of microgravity, this device utilizes varying-speed motor rotor driven to move, thus realize being separated of gas-liquid, utilize the collection arranging that the wicking action that the internal grid with wall face place produces realizes liquid phase simultaneously. Owing to the gas-liquid phase separation in this patent documentation does not utilize the effect of gravity, therefore, it is possible to the gas-liquid separation process being well applied under microgravity, but the driving mechanisms such as motor are introduced due to patent, device is made to need extra mechanism, and the sealing problem existed between rotor and cylinder, the capillary force adding wall face internal grid is not enough, and the fractional dose of this separator is also restricted.
Summary of the invention
Little for overcoming static separation device fractional dose in prior art, the technical problems such as the power consumption of the moving parts of motivating force deficiency and dynamic separator, the present invention provides screw type gas-liquid separator under a kind of microgravity based on porous material, this gas-liquid separator can realize being separated of gas phase and liquid phase smoothly in microgravity environment, fractional dose is big simultaneously, and movement-less part energy consumption.
For solving the problems of the technologies described above, technical scheme provided by the invention is as follows respectively:
Based on a screw type gas-liquid separator under the microgravity of porous material, comprising housing, this housing is provided with mixed stream 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;
It is positioned at the lyophily phase porous material layer of described inner walls;
Hating traverse baffle between liquid phase porous material post with lyophily phase porous material layer, that arrange along housing axial screw described in being located at, traverse baffle dual-side is fixed with hating liquid phase porous material post and lyophily phase porous material layer respectively.
As preferably, described mixed stream import is arranged along housing tangent line direction. Housing is generally cylindrical structural, adopts this technical scheme, it is possible to make full use of mixed stream enter separator after centrifugation, it is to increase the centrifugal force of mixed stream.
As preferably, described mixed stream 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 the outlet of described liquid phase working fluid 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 centrifugation of mixed stream. Liquid phase working fluid outlet can be arranged in the bottom surface of shell separator, and the side etc. of shell separator, concrete position can carry out special design according to the occasion used.
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; The outlet of described liquid phase working fluid is connected with described liquid collecting room. The setting of lyophily phase porous material base plate, the liquid two-phase ensured in mixed stream is fully separated, and liquid collecting room act as the liquid phase working fluid collected and collect through lyophily phase porous material, can also be regulated by 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 ��m, 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 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 ��m, and this aperture of porous material reduces gradually from bottom to top. Hating 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, and lyophily phase material can not be soaked by liquid phase working fluid. In order to make progressively to increase along the capillary force in 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 exports and hates liquid phase porous material post coaxially to arrange, and described case top inwall is provided with the nozzles with injector exporting with gas-phase working medium and aligning. In order to the gradient of mineralization pressure on the circulation passage of gas-phase working medium, it is furnished with nozzles with injector at this gas-phase working medium near exit so that reduced by the pressure of the gas-phase working medium after nozzles with injector. As preferably, after mixed stream 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 hating liquid phase porous material post gradually to contract; 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 hating liquid phase porous material post gradually to expand.
In the present invention, hating liquid phase porous material post can adopt wick structure, described nozzles with injector is positioned at the top of center capillary wick, and its axis and capillary wick, separator axis point-blank. The curve form of its pipeline may be selected to be logarithmic curve, parabolic curve, the forms such as hyperbolic line, 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 present invention, hate the diameter of liquid phase porous material post and the thickness of lyophily phase porous material layer can select according to service condition, when the gas-phase working medium in the mixed stream needing separation is more, the radius of liquid phase material of hating at axis place should be become big; When the liquid phase working fluid in the mixed stream needing separation is more, lyophily phase material porous material radius should be become big. 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 present invention, described hate liquid phase porous material post to adopt that multiple mode realizes with housing is fixing, generally adopt supporting plate structure, adopt the back up pad of annular, realize hating fixing of liquid phase porous material post and inner walls, wherein back up pad 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 mixed stream moves on helical baffles, extend the time of its motion, as preferably, the helix angle of described traverse baffle is 10��40 �� simultaneously. Connection between liquid phase porous material post and lyophily phase porous material layer can adopt welding, the mode such as bonding to traverse baffle with hating. The Material selec-tion of this traverse baffle need to be separated working medium compatible. Fluid flows along helical baffles in the separator, arrangement of baffles is between the capillary wick hating liquid phase porous material to form and the porous material of lyophily phase material composition, owing to working medium understands the effect that the junction of helical baffles and porous material is strong in moving process, in order to ensure the intensity of junction, the connection between traverse baffle and porous material adopts the modes such as spot welding.
Under the microgravity based on porous material of the present invention, the principle of work of screw type gas-liquid separator is: the gas-liquid two-phase formed in micro-gravity conditions flows through after mixed stream import enters into this gas-liquid separator, due to the weakening of the buoyancy that gravity causes, gas phase and liquid phase are not separated, but " it is full of " internal cavity of gas-liquid separator together, after the volume of the working medium entered in separator reaches certain value, working medium will do centrifugal motion along helical baffles in gas-liquid separator, owing to the density of liquid is bigger, and the density of gas is less, therefore, liquid is mainly distributed in the bigger place of radius under the influence of centrifugal force, gas is then in the less region of radius, namely inside " gas post " and the distribution of outside " pendular ring " is formed. it is 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, owing to the aperture of the porous material the closer to liquid phase working fluid exit portion is more little, the capillary force produced also progressively becomes big, 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. it is positioned at inner gas-phase working medium then to be collected by the porous material at axis place, and it is more big 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 it is separated gas-liquid separator by gas-phase working medium outlet.
The present invention compares 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 motivating 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 of working medium, pressure etc. are limited to some extent, such as when adopting lyophily phase material, pressure reduction before and after working medium separation must be less than certain value, otherwise porous material " will be punctured " or be produced " blocking " effect that bubble causes so that separating effect is deteriorated. Under a kind of microgravity based on porous material proposed by the invention, screw type gas-liquid separator also can be good at realizing the separation of gas-liquid under microgravity, owing to the phase separation of working medium is except adopting the capillary force of lyophily phase material, also use the centrifuge field produced when mixed stream moves on helical baffles, therefore motivating force is bigger so that gas-liquid separation amount when this kind of gas-liquid separator works is bigger. Simultaneously due to the effect of centrifuge field so that the working medium near lyophily phase material is liquid phase working fluid, and it is gas-phase working medium near what hate liquid phase material, therefore substantially improves " puncturing " and " blocking " effect that porous material causes. Therefore, the present invention compares static separation utensil bigger impellent, and significant advantages such as puncturing not easily occurs in bigger fractional dose.
2) dynamic separator mainly rely on moving parts (such as rotor etc.) be stirred in gas-liquid separator to realize centrifuge field, and the motion of moving parts needs to consume extra power, and it is arranged in the outside of separator due to general drives structure, therefore also there will be the dynamic seal problem between rotor and shell separator. Screw type gas-liquid separator under a kind of microgravity based on porous material that the present invention proposes, although not having moving parts, but adopting the unique design of circulation passage, achieving the centrifuge field of working medium equally, and making working medium being separated in this centrifuge field. Meanwhile, after being separated by centrifuge field, utilize lyophily phase material and hate liquid phase material to carry out collecting liquid phase working fluid and gas-phase working medium, combine again the advantage of static separation device. Owing to not using moving parts and external drive structure, combining again the advantage of static separation device, therefore the present invention compares dynamic gas liquid separating apparatus and has and do not consume energy, reliability height, the advantages such as simplicity of design simultaneously.
This shows, under a kind of microgravity based on porous material that the present invention proposes, screw type gas-liquid separator combines the advantage of static separation device and dynamic separator, also overcomes respective weak point simultaneously. It is big that the present invention has gas-liquid separation amount, does not consume energy, and the advantages such as reliability height, will have extraordinary application prospect under microgravity environment.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of screw type gas-liquid separator under a kind of microgravity based on porous material proposed by the invention;
Fig. 2 is that separator shown in Fig. 1 is along the vertical view in A-A face.
In above-mentioned accompanying drawing:
1, mixed stream 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, traverse baffle, 8, back up pad, 9, liquid collecting room, 10, liquid phase working fluid outlet, 11, lyophily phase porous material base plate.
Embodiment
As shown in Figures 1 and 2, the present invention proposes spiral gas-liquid under a kind of microgravity based on porous material, this separator by the housing 3 of separator, mixed stream 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 traverse baffle 7 of screw arrangement, back up pad 8, liquid collecting room 9 and liquid phase working fluid outlet 10 composition. On the sidewall at mixed stream import setting and housing 3 top, its axis is arranged along the tangential direction of shell separator 3, is provided with into the lyophily phase porous material layer 2 being made up of lyophily phase porous material being circular layout at the wall face place of shell separator 3. Being furnished with by the capillary wick hating liquid phase porous material to form at the axis place, center of housing 3, namely hate liquid phase porous material post 6, what this hated liquid phase porous material post 6 and shell separator 3 is linked as bonding or welding. In order to make mixed stream form centrifuge field in moving process, the traverse baffle 7 of spiral decline is arranged in hates between liquid phase porous material post 6, lyophily phase porous material layer 2.
Shell separator 3 top center position 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 gradually is arranged. That hates bottom liquid phase porous material post 6 by back up pad 8 and inner walls is fixing; It is provided with lyophily phase porous material base plate 11 bottom lyophily phase porous material layer 2, forms one-piece construction. 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 helix angle of traverse baffle is 10��40 ��.
When mixed stream flows at the traverse baffle 7 of volution, owing to the effect of centrifugal force achieves being separated of liquid phase and gas-phase working medium, wherein liquid phase working fluid is gathered in the bigger 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 by 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, exports 4 by gas-phase working medium after the step-down of nozzles with injector 5 and isolates this separator.
The embody rule of technique scheme is described below further, technique scheme is described further simultaneously:
Embodiment 1
In order to the pressure that the logistics reduced in space mission ensures, the CO in spacecraft2And H2The 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 in this system a key link. This example illustrates the application in regeneration annular space and life support system of spiral gas-liquid under a kind of microgravity based on porous material that the present invention proposes. The material that setting is reclaimed is liquid water, in this embodiment wall face porous material be chosen as water wetted material (such 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 of wall face porous material distributes as shown in Figure 1.
Water in spacecraft is collected in " sewage collecting box body " before entering recovery, after the pretreatment systems such as filtration, flow in this gas-liquid separator through mixed stream import 1. After gas-liquid mixture fluid enters into gas-liquid separator, the water forming liquid phase in the bigger region of radius is downloaded in the effect at helical baffles 7, and forms the water of gas phase in the region that radius is less. For lyophily phase porous material layer 2, more little owing to exporting the aperture of the porous material at 10 places the closer to liquid working substance, the capillary force being therefore subject near the liquid phase at liquid-phase outlet place is more big, and hydrophilic porous material now defines the circulation passage of liquid water. And the porous material at the axis place, Shui Bei center of gas phase is collected, 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 CO2During the steam sepn process for the treatment of system, its working process is mutually similar with this embodiment with separation principle.
In order to advantage and the practicality of spiral gas-liquid under a kind of microgravity based on porous material proposed by the invention are better described, below by calculate illustrate the present invention be used for microgravity under gas-liquid separation process in advantage. The diameter assuming separator is 30cm, and height size is 60cm. Hydrophilic phase porous material by near wall place is poly-propionitrile material, and the thickness of the lyophily phase porous material layer 2 of its composition is 6cm. Axis place, center hates liquid phase porous material to be polytetrafluoroethylmaterial material, and what it formed hates the diameter of liquid phase porous material post 6 to be 6cm. The width of helical baffles 7 is 6cm, and thickness is 2mm, and helix angle is 20 ��, and its length is 1.5m. Nozzles with injector 5 is gradually contracting jet pipe upwards. Hydrophilic porous material and hate the pore size of water porous material all progressively to change to 10 ��m from 50 ��m. The temperature at mixed stream 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 at such a temperature is 0.072N/m. Owing to liquid phase working fluid resistance in the porous material is bigger, it is assumed that if when the pressure drop of liquid phase working fluid in lyophily phase material equals the motivating force of working medium motion, separator now reaches maximum working medium fractional dose. The motivating force of gas-liquid separator working medium motion and the flow of working medium under the microgravity that now this invention proposes are as shown in table 1 with the performance comparison without the Static Gas liquid/gas separator of helical baffles of conventional same parameter design.
The performance comparison of table 1 the present invention and the static gas-liquid separator of routine
Can finding from the comparison process of table 1, under a kind of microgravity based on porous material proposed by the invention, the gas-liquid separator based on wicking action design of the motivating force of screw type gas-liquid separator and the maximum separation throughput ratio routine of separator is all big. Therefore there is better application prospect.
Embodiment 2
This example illustrates the application in steam compression system of screw type gas-liquid separator under a kind of microgravity based on porous material proposed by the invention. 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 of wall face porous material distributes as shown in Figure 1.
When the R134a of gas-liquid two-phase stream mode flows into after this gas-liquid separator through mixed stream import 1, under the effect of helical baffles 7, do spiral motion in the separator. Due to the difference of the R134a of gas phase and the density of the R134a of liquid phase, under the effect of centrifuge field, the R134a of gas phase and the R134a of liquid phase is distributed in the less region of radius and the bigger region of radius respectively. The R134a of liquid phase is by the porous material near wall place, and the R134a of gas phase is near the porous material at axis place, center. Owing to the R134a of liquid phase can be good at the porous material at wetting wall face place, will progressively sprawl at this material internal and come, owing to the aperture near liquid-phase outlet place is less, therefore the capillary force being subject to the closer to the R134a of the liquid phase in liquid phase working fluid exit is more big, and wall face 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 owing to the aperture of the capillary wick near jet pipe place is more little, 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, it is described below by calculating. The diameter assuming separator is 30cm, and height size is 60cm. Porous material by near wall place is parent's R134a liquid phase porous material, and the thickness of the lyophily phase porous material layer 2 of its composition is 6cm. Axis place, center hates liquid phase porous material for hating R134a liquid phase porous material, and what it formed hates the diameter of liquid phase porous material post 6 to be 5cm. The width of helical baffles 7 is 8cm, and thickness is 2mm, and helix angle is 20 ��, and its length is 1.5m. Nozzles with injector 5 is gradually contracting jet pipe upwards. Parent's R134a porous material and hate the pore size of R134a porous material to be all progressively reduced to 10 ��m from 50 ��m. The temperature at mixed stream import 1 place is 25 DEG C, and working medium inlet velocity is 3m/s, and void fraction is 0.5, R134a surface tension at such a temperature is 0.0081N/m. Owing to liquid phase R134a resistance to flow in the porous material is bigger, it is assumed that if when the pressure drop of liquid phase working fluid in lyophily phase material equals the motivating force of working medium motion, separator now reaches maximum working medium fractional dose. Under this setting operating mode, the motivating force of gas-liquid separator working medium motion and the flow of working medium under the microgravity that this invention proposes are as shown in table 2 with the performance comparison without the Static Gas liquid/gas separator of helical baffles of conventional same parameter design.
The performance comparison of table 2 the present invention and the static gas-liquid separator of routine
As can be seen from table 2 equally, when the R134a being applied to gas-liquid two-phase stream mode is separated, under the microgravity based on porous material of the present invention, the gas-liquid separator based on wicking action design of the motivating force of screw type gas-liquid separator and the maximum separation throughput ratio routine of separator is all big.
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 is reclaimed, it is necessary to carry out H2O-O2Sepn process. The present embodiment illustrates the application in electrolysis oxygen generation system of screw type gas-liquid separator under a kind of microgravity based on porous material that the present invention proposes. In this example wall face 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 of wall face porous material distributes as shown in Figure 2.
Through pretreated H2O-O2Mixed stream tangentially enters into this gas-liquid separator by mixed stream import, at the traverse baffle 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 by near 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 of the oxygen of gaseous state through axis place, center collect, drawn from gaseous phase outlet after the step-down of nozzles with injector. So far, it is achieved that the H under microgravity2O-O2Sepn process. Liquid phase working fluid owing to being separated herein is water, therefore the separation performance of this separator is similar to embodiment. Its separating effect can be characterized by maximum working medium flow in separation, owing to water resistance in the porous material is bigger, if assuming that when the pressure drop of water in lyophily phase material equals the motivating force of working medium motion, separator now reaches maximum working medium fractional dose. Its calculation result (wherein Material selec-tion, device size, separation parameter are equal to embodiment 1) as shown in table 3.
The performance comparison of table 3 the present invention and the static gas-liquid separator of routine
As can be seen from Table 3, it is being applied to H2O-O2Separation time, under the microgravity based on porous material of the present invention, the gas-liquid separator based on wicking action design of the motivating force of screw type gas-liquid separator and the maximum separation throughput ratio routine of separator is all big.
Claims (8)
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 mixed stream import (1), gas-phase working medium outlet (4) and liquid phase working fluid outlet (10), it is characterised 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);
It is positioned at lyophily phase porous material layer (2) of described housing (3) inwall;
Hating traverse baffle (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, traverse baffle (7) dual-side is fixed with hating liquid phase porous material post (6) and lyophily phase porous material layer (2) respectively;
In described lyophily phase porous material layer (2), the pore size of porous material is 0.1��100 ��m, and this aperture of porous material reduces gradually from top to bottom;
The described pore size hating liquid phase porous material post (6) interior porous material is 0.1��100 ��m, and this aperture of porous material reduces gradually from bottom to top.
2. screw type gas-liquid separator under the microgravity based on porous material according to claim 1, it is characterised in that: described mixed stream import (1) is arranged along housing (3) tangent line direction.
3. screw type gas-liquid separator under the microgravity based on porous material according to claim 1, it is characterized in that: described mixed stream 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) lower section.
4. screw type gas-liquid separator under the microgravity based on porous material according to claim 3, it is characterised 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 connected with described liquid collecting room (9).
5. screw type gas-liquid separator under the microgravity based on porous material according to claim 3, it is characterised in that: the helix angle of described traverse baffle (7) is 10��40 ��.
6. screw type gas-liquid separator under the microgravity based on porous material according to claim 3, it is characterized in that: liquid phase porous material post (6) is coaxially arranged described gas-phase working medium outlet (4) with hating, described housing (3) top inner wall is provided with the nozzles with injector (5) exporting (4) and aligning with gas-phase working medium.
7. screw type gas-liquid separator under the microgravity based on porous material according to claim 1-6 any claim, it is characterised in that: described in hate the diameter of liquid phase porous material post (6) and the size of housing (3) interior diameter to be 1:8��1:3.
8. screw type gas-liquid separator under the microgravity based on porous material according to claim 1-6 any claim, it is characterised 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073875.9A CN104667584B (en) | 2015-02-12 | 2015-02-12 | Screw type gas-liquid separator under a kind of microgravity based on porous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073875.9A CN104667584B (en) | 2015-02-12 | 2015-02-12 | Screw type gas-liquid separator under a kind of microgravity based on porous material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104667584A CN104667584A (en) | 2015-06-03 |
| CN104667584B true CN104667584B (en) | 2016-06-08 |
Family
ID=53303493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510073875.9A Active CN104667584B (en) | 2015-02-12 | 2015-02-12 | Screw type gas-liquid separator under a kind of microgravity based on porous material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104667584B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105173462B (en) * | 2015-08-25 | 2018-05-08 | 中国人民解放军国防科学技术大学 | The selection method of hydraulic accumulator and hydraulic accumulator |
| CN105035363B (en) * | 2015-08-25 | 2018-03-02 | 中国人民解放军国防科学技术大学 | The selection method of tank exhaust apparatus and tank exhaust apparatus |
| CN105396412B (en) * | 2015-12-18 | 2018-01-09 | 重庆大学 | A kind of gas-liquid separator being applied under microgravity |
| CN109569029B (en) * | 2016-12-27 | 2020-12-15 | 兰州空间技术物理研究所 | Centrifugal gas-liquid separator test device |
| CN109921062B (en) * | 2017-12-13 | 2021-07-06 | 中国科学院大连化学物理研究所 | Gas-liquid separator for fuel cell |
| CN110567550B (en) * | 2018-06-06 | 2022-10-18 | 佛山市顺德区美的电热电器制造有限公司 | Anti-overflow sensor and cooking utensil |
| CN110426252B (en) * | 2019-07-05 | 2021-09-24 | 北京空间飞行器总体设计部 | Visual microgravity gas trapping test device |
| CN111569581B (en) * | 2020-04-13 | 2021-06-29 | 北京空间飞行器总体设计部 | Gas-liquid separation device and separation method suitable for lunar gravity environment |
| CN113826576B (en) * | 2021-08-31 | 2023-02-28 | 北京航天控制仪器研究所 | Automatic change space fish and cultivate test device |
| CN113842680A (en) * | 2021-10-20 | 2021-12-28 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Tubular gas-liquid separator |
| CN117323739B (en) * | 2023-12-01 | 2024-02-13 | 上海鼎庆电力机械设备有限公司 | Digital on-line oil quality detection and purification integrated device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3715157A1 (en) * | 1987-05-07 | 1988-11-17 | Dornier System Gmbh | Apparatus for separating and removing gas from a gas/liquid mixture |
| CN101997127B (en) * | 2009-08-21 | 2013-01-30 | 中国科学院大连化学物理研究所 | Gas-liquid separator used for directly liquid feeding fuel battery system |
| US9084946B2 (en) * | 2013-04-08 | 2015-07-21 | Hamilton Sundstrand Space Systems International Inc. | Vortex separator and separation method |
| CN204469285U (en) * | 2015-02-12 | 2015-07-15 | 浙江大学 | A kind of based on screw type gas-liquid separator under the microgravity of porous material |
-
2015
- 2015-02-12 CN CN201510073875.9A patent/CN104667584B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104667584A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104667584B (en) | Screw type gas-liquid separator under a kind of microgravity based on porous material | |
| CN204469285U (en) | A kind of based on screw type gas-liquid separator under the microgravity of porous material | |
| EP1745833B1 (en) | Drain separator | |
| CN102489101B (en) | Gas-liquid separator | |
| CN102626560B (en) | Rotational flow air flotation oil-water separation device and air flotation generator | |
| US9744476B2 (en) | 3D printed modular centrifugal contactors and method for separating moieties using 3D printed optimized surfaces | |
| CN111569581B (en) | Gas-liquid separation device and separation method suitable for lunar gravity environment | |
| CN1332748C (en) | Self circulated cascade gas lift type internal-loop reactor system | |
| CN110251981A (en) | A kind of methanol rectifying tower | |
| CN102688631A (en) | Gas and liquid separator | |
| CN101047250A (en) | Fuel cell system | |
| US20220258183A1 (en) | Spiral-shaped separation device for fluid purification device | |
| Fili et al. | Trade-off analysis of phase separation techniques for advanced life support systems in space | |
| CN203564935U (en) | Indoor air purifying device | |
| CN2487427Y (en) | Screw type gas-liquid separator | |
| CN216426817U (en) | Thermal driving solution separation device with progressive constraint under centrifugal force field | |
| CN106698722B (en) | Oil-water separation device and application | |
| CN208026540U (en) | A kind of concentrating instrument | |
| CN210283968U (en) | Medium filter convenient for replacing filter element for electric automobile thermal management system | |
| CN208442029U (en) | Chemical reaction system | |
| CN206597422U (en) | A kind of PP gas-liquid separators | |
| CN220948562U (en) | Composite material storage box for spacecraft | |
| CN215195453U (en) | Film evaporator without rotating shaft | |
| CN213286242U (en) | Tail gas condensation recovery device of lithium battery powder heating coating machine | |
| CN220737605U (en) | Bubble discharge device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |