CN101528323A - Fluid storage and dispensing system - Google Patents
Fluid storage and dispensing system Download PDFInfo
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- CN101528323A CN101528323A CNA2007800190131A CN200780019013A CN101528323A CN 101528323 A CN101528323 A CN 101528323A CN A2007800190131 A CNA2007800190131 A CN A2007800190131A CN 200780019013 A CN200780019013 A CN 200780019013A CN 101528323 A CN101528323 A CN 101528323A
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Abstract
Fluid storage and dispensing system comprises a pressure vessel having a moveable partition member dividing the interior into first and second variable volumes. The first variable volume has a first passage adapted for the inflow and outflow of a product fluid and the second variable volume has a second passage adapted for the inflow and outflow of a compensating gas. The system includes (1) a compensating gas line for providing compensating gas, (2) a first orifice that is installed in the compensating gas line and has an upstream side and a downstream side, (3) a compensating gas vent line connected to the compensating gas line between the second passage and the downstream side of the first orifice, and (4) a second orifice installed in the compensating gas vent line, wherein the cross-sectional flow area of the second orifice is smaller than the cross-sectional flow area of the first orifice.
Description
The cross reference of related application
The application requires the 60/808th, No. 508 of submitting on May 25th, 2006 and No. 11748778 U.S. Provisional Application No. of submitting on May 16th, 2007.
Background technology
The fluid of integrated products system or the generation of gas products and distribution are widely used in the commercial and industrial application, and in these were used, the traffic demand of fluid product was variable or interrupted.In order to satisfy the changeable flow demand, the integrated products system typically comprises product flow storage tank or surge tank, exceeds the high product traffic demand that fluid or gas produce the equipment capacity so that satisfy.An example of this application is by pressure swing adsorption system or membrane system nitrogen to be separated in air, and wherein, nitrogen is used to clean, deactivation, inflation and relevant application.The nitrogen that is generated typically is stored in the surge tank with suitable pressure, exceeds the maximum flow demand of adsorption system or membrane system capacity with supply.
In many these were used, the maximum stream flow demand needed big surge tank, and this can take sizable ground space and restriction produces and the portability of distribution system.The space of planes demand minimizes owing to usually be necessary to make systematically, and system is moved near operating position, thereby needs the fluid of improvement to produce and distribution system, and it has the permission system and is easy to portable littler storage tank.Embodiments of the invention have solved this needs, and it has obtained hereinafter describing and has been limited by subsequently claim.
Summary of the invention
Embodiments of the invention relate to fluid storage and distribution system, and this system comprises:
(a) pressure vessel, its have inner surface, inside, outside and inside and outside between rigid walls;
(b) place the movably separator of pressure vessel inside, wherein, this separator is divided into first variable-volume and second variable-volume with inside, and wherein first variable-volume does not flow with second variable-volume and is communicated with;
(c) pass the rigid walls of pressure vessel and enter the first passage of first variable-volume, wherein, this first passage is suitable for product fluid being introduced first variable-volume and product fluid being fetched from first variable-volume; And
(d) pass the rigid walls of pressure vessel and enter the second channel of second variable-volume, wherein, second channel is suitable for complemental air being introduced second variable-volume and complemental air being fetched from second variable-volume.
This system also comprises the complemental air supply system, and this supply system comprises
(1) complemental air pipeline, it places second channel and compensation current to flow and is communicated with;
(2) first holes, it is placed in the complemental air pipeline and has upstream side and downstream;
(3) complemental air air pipeline, it flows with the position of complemental air pipeline between the downstream in the second channel and first hole and is communicated with, and wherein, the complemental air air pipeline is suitable for complemental air self compensation air pipe is discharged in the atmosphere; And
(4) second holes, it is placed in the complemental air air pipeline, and wherein, the cross section flow area in second hole is less than the cross section flow area in first hole.
Another embodiment comprises fluid storage and distribution system, and this system comprises:
(a) pressure vessel, its have inner surface, inside, outside and inside and outside between rigid walls;
(b) place the flexible fluid container of pressure vessel inside, wherein, the opening that the rigid walls that this flexible fluid container has inside, outer surface and passes pressure vessel couples together internal tank and first passage;
(c) first variable-volume that limits by the inside of flexible fluid container, wherein, first passage flows with product fluid supply line and product fluid distribution circuit and is communicated with, and is suitable for product fluid being introduced first variable-volume and product fluid being fetched from first variable-volume;
(d) second variable-volume that limits by the outer surface of the inner surface of pressure vessel and flexible fluid container, wherein, second variable-volume flows with second channel and is communicated with, and second channel is suitable for complemental air being introduced second variable-volume and complemental air being fetched from second variable-volume; And
(e) complemental air supply system, this supply system comprises:
(1) complemental air pipeline, it places second channel and compensation current to flow and is communicated with;
(2) first holes, it is placed in the complemental air pipeline and has upstream side and downstream;
(3) complemental air air pipeline, it flows with the position of complemental air pipeline between the downstream in the second channel and first hole and is communicated with, and wherein, the complemental air air pipeline is suitable for complemental air self compensation air pipe is discharged in the atmosphere; And
(4) second holes, it is placed in the complemental air air pipeline, and wherein, the cross section flow area in second hole is less than the cross section flow area in first hole.
Relevant embodiment comprises the method for storage and distributing fluids, and this method comprises:
(a) provide fluid storage and distribution system, this system comprises:
(1) pressure vessel, its have inner surface, inside, outside and inside and outside between rigid walls;
(2) place the flexible fluid container of pressure vessel inside, wherein, the opening that the rigid walls that this flexible fluid container has inside, outer surface and passes pressure vessel couples together internal tank and first passage;
(3) first variable-volume that limits by the inside of flexible fluid container, wherein, first passage flows with product fluid supply line and product fluid distribution circuit and is communicated with, and is suitable for product fluid being introduced first variable-volume and product fluid being fetched from first variable-volume;
(4) second variable-volume that limits by the outer surface of the inner surface of pressure vessel and flexible fluid container, wherein, second variable-volume flows with second channel and is communicated with, and second channel is suitable for complemental air being introduced second variable-volume and complemental air being fetched from second variable-volume; And
(5) complemental air supply system, this supply system comprises:
(i) complemental air pipeline, it places second channel and compensation current to flow and is communicated with;
(ii) first hole, it is placed in the complemental air pipeline and has upstream side and downstream;
(iii) complemental air air pipeline, itself and the connection that becomes to flow of the position of complemental air pipeline between the downstream in the second channel and first hole, wherein, the complemental air air pipeline is suitable for complemental air self compensation air pipe is discharged in the atmosphere; And
(iv) second hole, it is placed in the complemental air air pipeline, and wherein, the cross section flow area in second hole is less than the cross section flow area in first hole;
(b) in the interim very first time, product fluid is fetched from first variable-volume, with its with mix from the product fluid of product fluid supply line so that the product mix fluid to be provided, the product mix fluid is incorporated into the product fluid distribution circuit, and complemental air is incorporated into second variable-volume by first hole and complemental air pipeline; And
(c) during second time interval, to be incorporated into the product fluid distribution circuit from the first of the product fluid on product fluid supply tube road, to be incorporated into first variable-volume from the second portion of the product fluid on product fluid supply tube road, and will fetch from second variable-volume by second hole and complemental air air pipeline from the complemental air of second variable-volume.
Another relevant embodiment relates to gas generation, storage and distribution system, and this system comprises:
(a) pressure vessel, its have inner surface, inside, outside and inside and outside between rigid walls;
(b) place the flexible gas container of pressure vessel inside, wherein, the opening that the rigid walls that this flexible gas container has inside, outer surface and passes pressure vessel couples together internal tank and first passage;
(c) first variable-volume that limits by the inside of flexible gas container, wherein, first passage becomes the connection of directly flowing with the product gas supply line with the product gas distribution circuit, and is suitable for product gas being introduced first variable-volume and product gas being fetched from first variable-volume;
(d) second variable-volume that limits by the outer surface of the inner surface of pressure vessel and flexible fluid container, wherein, the connection that becomes to flow of second variable-volume and second channel, second channel is suitable for complemental air being introduced second variable-volume and complemental air being fetched from second variable-volume; And
(e) pressure swing adsorption system, this system comprises at least one container that comprises sorbing material, this sorbing material is suitable for preferentially adsorbing stronger adsorbable component from admixture of gas, this admixture of gas comprises stronger adsorbable component and time strong adsorbable component, so that the discharge gas of enriching to be provided in inferior strong adsorbable component, wherein, this pressure swing adsorption system comprises outlet conduit, and this outlet conduit is suitable for discharge gas is directly offered first variable-volume by product gas supply line and first passage.
Another embodiment comprise be used for producing, the method for storage and distribution of gas, this method comprises:
(a) provide atmosphere storage and distribution system, this system comprises:
(1) pressure vessel, its have inner surface, inside, outside and inside and outside between rigid walls;
(2) place the flexible gas container of pressure vessel inside, wherein, the opening that the rigid walls that this flexible gas container has inside, outer surface and passes pressure vessel couples together internal tank and first passage;
(3) first variable-volume that limits by the inside of flexible gas container, wherein, first passage becomes the connection of directly flowing with the product gas supply line with the product gas distribution circuit, and is suitable for product gas being introduced first variable-volume and product gas being fetched from first variable-volume;
(4) second variable-volume that limits by the outer surface of the inner surface of pressure vessel and flexible fluid container, wherein, the connection that becomes to flow of second variable-volume and second channel, second channel are suitable for complemental air is introduced second variable-volume and by the complemental air pipeline complemental air being fetched from second variable-volume by the complemental air pipeline; And
(b) material gas mixture is incorporated into the contactor that comprises sorbent material, this material gas mixture comprises stronger adsorbable component and time strong adsorbable component, preferentially on sorbent material, adsorb the part in the stronger adsorbable component, the discharge gas of fetching enriching in inferior strong adsorbable component from the absorption container to be providing product gas, and product gas is introduced directly into the product gas supply line.
The concise and to the point description of some views of accompanying drawing
Fig. 1 is the indicative flowchart of the general embodiment of the present invention;
Fig. 2 is the sectional view that is used for the cryptomere type storage tank of the embodiment of the invention;
Fig. 3 is used for the schematic pipeline of the specific embodiment of the invention and the schematic diagram of instrument, and this embodiment uses the pressure swing adsorption system that is integrated with cryptomere type storage tank;
These figures show embodiments of the invention, and the definite relation and the size of parts shown in the hint, and also may not be shown to scale, and do not mean that these embodiment are limited to any feature shown in this article.
The detailed description of the embodiment of the invention
Embodiments of the invention provide and have been used for the system and method for in following application supplied with pressurised fluid, in these are used, are variable and/or interrupted to the traffic demand of pressure fluid.Embodiment has used fluid storage system or the atmosphere storage system that comprises pressure vessel, and this pressure vessel has the rigid walls between inner surface, inside, outside and inside and the outside.Movably separator places the inside of pressure vessel, and this separator becomes first variable-volume and second variable-volume with internal separation.First variable-volume does not flow with second variable-volume and is communicated with, and this separator is isolated first variable-volume and second variable-volume.The cumulative volume of first variable-volume and second variable-volume typically can be constant basically.The first passage that passes the rigid walls of pressure vessel leads to first variable-volume, and first passage is suitable for product fluid being introduced first variable-volume and product fluid being fetched from first variable-volume.The second channel that passes the pressure vessel rigid walls leads to second variable-volume, and second channel is suitable for complemental air is introduced second variable-volume and fetched complemental air from second variable-volume.The fluid container that complemental air allows product fluid to introduce flexible fluid container or own elasticity with the constant basically pressure that equals the required supply pressure of product fluid is fetched.
System's using compensation gas supply system, this supply system comprises (1) complemental air pipeline, it places second channel and compensation current to flow and is communicated with; (2) first holes, it is placed in the complemental air pipeline and has upstream side and downstream; (3) complemental air air pipeline, its position between the downstream in the second channel and first hole flow with the complemental air pipeline and are communicated with, and wherein, the complemental air air pipeline is suitable for complemental air self compensation air pipe is discharged in the atmosphere; (4) second holes, it is placed in the complemental air air pipeline, and wherein, the cross section flow area in second hole is less than the cross section flow area in first hole.
Complemental air is defined as a kind of gas of being introduced in second variable-volume or fetching from second variable-volume during contraction or expansion respectively when first variable-volume.Complemental air is kept the pressure in second variable-volume, and this pressure equals the pressure in first variable-volume substantially.
First variable-volume within the inside of pressure vessel and second variable-volume can be limited by some types movably separator.In one embodiment, can use capsular bag, wherein the bag wall is separator movably, and first variable-volume is limited by the inside of capsular bag, and second variable-volume is limited by the inner surface of pressure vessel and the outer surface of capsular bag.In another embodiment, can use telescopic tube assembly, wherein flexible tube wall is separator movably, and first variable-volume is limited by the inside of the tube wall that stretches, and second variable-volume is limited by the inner surface of pressure vessel and the outer surface of flexible tube wall.
In an alternative, can use flexible diaphragm assembly, wherein, the periphery of barrier film is to the inner wall sealing of pressure vessel, and barrier film is a separator movably.Barrier film is formed by flexible and/or flexible material.First variable-volume limits by a side of barrier film with at the inner surface of the pressure vessel of this side of barrier film, and second variable-volume limits by the opposite side of barrier film with at the inner surface of the pressure vessel of the opposite side of barrier film.
In another alternative, can be with piston as separator movably to form slidable sealing to the pressure vessel inner surface.First variable-volume limits by a side of piston with at the inner surface of the pressure vessel of this side of piston, and second variable-volume limits by the opposite side of piston with at the inner surface of the pressure vessel of the opposite side of piston.
Can optionally use the movably separator and the pressure vessel of any other type, so that the function of first variable volume and second variable-volume as defined above to be provided.
Some embodiment of the present invention has utilized fluid or the atmosphere storage system that comprises flexible fluid container, this fluid container places the inside of the pressure vessel with complemental air, and this complemental air is controlled the interior pressure of volume between flexible fluid container outer surface and the pressure vessel inner surface.It for example is capsular bag or telescopic tube assembly as described above that this flexible fluid container can be.Fetch the inside that complemental air allows product fluid to be incorporated into the fluid container of the inside of flexible fluid container or own elasticity with the constant basically pressure that equals the required supply pressure of product fluid.Flexible fluid container can be integrated with the separative element that produces product gas, and wherein, when making the integrated system minimized in size, integrated fluid container and separative element provide required high product flow rate.
One exemplary embodiment of the present invention as shown in Figure 1, it is used for nitrogen is reclaimed from air, and gives the user with the nitrogen that reclaims with required pressure and required product flowrate range assignment.In this diagram, supply atmosphere with the pressure between about 110psig (pound/square inch) and the about 160psig by pipeline 1, and first wherein flows to air-seperation system 5 by pipeline 3.Air separation can be influenced by any known mode, for example transformation adsorbing separation or membrane separation.This piece-rate system provides pressurization nitrogen product gas with the flow rate until the design flow rate of system with the purity that is equal to or higher than appointment by product fluid supply line 7.Be equal to or less than the deisgn product flow rate, be lower than raw gas pressure in the pipeline 1 and environment temperature under the condition between 50-90 slightly, product gas typically comprises the nitrogen of at least 95% volume.The waste gas that exhausts in nitrogen is discharged by air pipeline 9.If air-seperation system moves on the deisgn product flow rate, product purity will be lower than the nitrogen of 95% volume.
The nitrogen product gas by product fluid distribution circuit 11 with the time proposed for variable flow rate be transported to the terminal use, some gases wherein can surpass the product capacity of air-seperation system 5.Alternatively or additionally, the terminal use may be interrupted to the demand of nitrogen.Unstripped gas in the pipeline 1 is to be enough to satisfy the pressure supply of the gas pressure demand in the product fluid distribution circuit 11.In order to satisfy variable and/or interrupted product gas demand, the part of the nitrogen that is produced can be by pipeline 13 guiding variable-volume atmosphere storage systems 15, and this storage system 15 comprises flexible fluid container or the flexible gas container 17 that places rigid walls pressure vessel 19 inside.This system has formed first variable-volume that the inside 21 by elastic container 17 limits, and is formed on second variable-volume 23 between the inner surface of the outer surface of elastic container 17 and pressure vessel 19.
The complemental air loop is designed to when the product air-flow goes out elastic container 17 complemental air is fed to second variable-volume 23, and fetches complemental air from second variable-volume 23 when product gas flows into elastic container 17.Each hole typically is included in the annular opening of holing on the choke block, as fluid flow technique field is known.When fetching product gas from elastic container 17, it is second variable-volume 23 gas that affords redress that the cross section flow area in hole 43 and hole 49 and diameter are selected to required pressure and flow rate.When discharging in not having product gas own elasticity container 17, hole 43 is sized to produce back pressure in pipeline 35 and pipeline 45, and this back pressure approximates required product gas supply pressure greatly.When comprising triple valve 39 and flow orifice 53, when elastic container 17 was full of nitrogen product gas, complemental air was discharged by hole 53 and hole 49.Triple valve 39 cuts off compensation currents by pipeline 37, thereby when product-free gas during from elastic container 17 discharges, complemental air is preserved.
Be applied to first and second zones term " with ... flow to be communicated with ", its meaning is that fluid can flow to second area from the first area by connecting pipe and/or zone line, and/or flows to the first area from second area.Be applied to the term " being connected to ... " in first and second zones, its meaning is that fluid can flow directly to second area or flow to second area by connecting pipe from the first area.The term that is applied to streaming flow " directly flows and is communicated with " and term " directly " or " directly ", its meaning is meant that fluid can flow to second area from the first area, and/or flow to second area from second area, wherein interregional flow channel does not flow with any container, storage tank or treatment facility and is communicated with, except fluid flowing passage can comprise pipeline and/or be selected from the hole and one or more flow control apparatus of valve.Term " enriching " refers to liquid or gas products or the by-product stream fetched from separation process, and wherein the concentration of the composition in product or the by-product stream is greater than the concentration of the composition that is supplied to separation process.
General term used herein " transformation absorption " (PSA) is applied to the adsorption separation system that all move between minimum and maximum pressure.Maximum pressure is typically greater than atmospheric pressure, and minimum pressure may be greater than atmospheric pressure, equal atmospheric pressure or less than atmospheric pressure.
When being applied to any feature of specification and the described embodiments of the invention of claim, the employed indefinite article of this paper " " and " one " refer to one or more.Use " one " and " one " to be not limited to the meaning of single feature, unless specifically stated this qualification.Be used for the preceding definite article of singular noun or plural noun or plural noun phrase and " be somebody's turn to do ", expression is feature or a plurality of special specifically feature especially specifically, and has single or multiple implications according to the context of its use.One of adjective " any " expression, some or nondistinctive any amount.Place term between first entity and second entity " and/or ", its meaning is one of following: (1) first entity; (2) second entities; And (3) first entity and second entity.
The employed fluid of this paper can be liquid, gas or supercritical fluid, and can comprise one or more compositions.
Refer again to Fig. 1, the complemental air loop provides minimum back pressure by variable-volume atmosphere storage system 15 on air-seperation system 5, thereby by this air-seperation system maximum pressure drop is set.For example, the complemental air loop can be designed to be used at the air pressure that maintains about 130psig of the inside 21 of elastic container 17, this so that make the product fluid in the supply line 7 maintain about 130psig.The unstripped gas approximately typical pressure of 140psig is supplied by pipeline 1, has therefore limited pressure drop by air-seperation system 5, and then has limited the flow rate by system.This is used for keeping the minimum nitrogen product purity, for example the nitrogen of 95% volume.Air-seperation system 5 can be known transformation absorption (PSA) or a membrane permeate system of any prior art.In the operation of current available PSA and film nitrogenous generator, terminal use's high flow capacity demand can cause reducing from the blowdown presssure of nitrogenous generator, thereby increased pressure drop by nitrogenous generator, and then reduced the holdup time in the nitrogen separator and caused low nitrogen product purity.
According to timing, duration and the terminal use flow rate by pipeline 11 desired product gas, the system among Fig. 1 can be used to move under the arbitrary patterns in five patterns as described below, and these five patterns are:
1) first or standby mode in, do not have user's request, elastic container 17 is filled and occupies the whole inside of pressure vessel 19, and the complemental air volume in second variable-volume 23 of variable-volume atmosphere storage system 15 is substantially zero.Air-seperation system 5 is in standby.In this pattern, do not have complemental air to flow into second variable-volume 23, and in pipeline 35, keep in the suitable back pressure, discharge by hole 49 by the complemental air that hole 43 provides.If use optional threeway two-position valve 39 and hole 53, this valve cuts out pipeline 37 and opens between pipeline 41 and 51, thereby by hole 53 the complemental air loop is placed to atmosphere opening.In this selection, in any pipeline, all there is not air-flow.
2) in second operator scheme, the demand by 11 pairs of product gas of product fluid distribution circuit has surpassed the enabled production gas flow in the product fluid supply line 7, and elastic container 17 has comprised the product gas of storage.(a) may take place after system is in standby mode in this under the following situation, when the user at first requires air, and air-seperation system needs a bit of time when reaching steady-state operation, and/or (b) when user's request during greater than the capacity of air-seperation system on design purity.Under these situations of this operator scheme, product in shortage by providing by pipeline 13 own elasticity containers 17 effluent airs.When product gas when elastic container 17 flows out, complemental air flows into second variable-volume 23 by pipeline 35 with molar flow rate and the pressure approximately the same with product gas.
3) in the 3rd operator scheme, the demand by 11 pairs of product gas of product fluid distribution circuit is less than the product throughput in the product fluid supply line 7, and elastic container 17 is not full of product gas.In this case, product gas flows into elastic container 17 by pipeline 13, and product gas flows to the user by product fluid distribution circuit 11 simultaneously.When product gas flows into elastic container 17, from the complemental air of second variable-volume 23 by pipeline 35 with molar flow rate approximately the same and pressure inflow elastic container 17 with product gas.Excessive complemental air is discharged by pipeline 47 and hole 49.If use optional triple valve 39 and hole 53, extra complemental air is discharged by pipeline 51 and hole 53, and the compensation current in the pipeline 37 is cut off.
4) in the 4th operator scheme, elastic container 17 has been full of product gas, and consumer products gas demand is equal to or less than the capacity of the air-seperation system 5 under the design purity.In this pattern, do not have complemental air to flow into second variable-volume 23, and discharge by hole 49 by the complemental air that hole 43 provides, keep suitable back pressure in the pipeline 35 simultaneously.If use optional triple valve 39 and hole 53, and the product gas flow in the pipeline 11 less than predetermined value (for example, (1.2SCFM scfm)), extra complemental air is discharged by pipeline 51 and hole 53, compensation current in the pipeline 37 is cut off, and the pressure in the pipeline 35 transfers atmospheric pressure to.(for example, 1.2SCFM), optionally triple valve 39 can be activated and allow to be transported to 33 from the complemental air of pipeline 37 if the product flow in the pipeline 11 is equal to or greater than predetermined value.
5) in the 5th operator scheme, the demand by 11 pairs of product gas of product fluid distribution circuit has surpassed the capacity of air-seperation system 5 under the design purity, and elastic container 17 is empty.This pattern is rare, if but taken place really, air-seperation system 5 provides higher product flow with the product purity that lowers.In this pattern,, thereby there is not complemental air to inject because second variable-volume 23 is full.Discharge by hole 49 by the complemental air that hole 43 provides, in the pipeline 35 and second variable-volume 23, keep suitable back pressure simultaneously.
Employed in the above description complemental air is used for keeping pressure in second variable-volume 23 according to definition, and this pressure is substantially equal to the pressure in the elastic container 17.The meaning that " is substantially equal to " is meant that the pressure differential of the gas between second variable-volume 23 and first variable-volume 21 is usually negligible or is zero, but the also beginning of described certain operator scheme in the above or slightly change when finishing.
The complemental air that flows into second variable-volume 23 is replaced the volume of the product gas of fetching from elastic container 17.Between second variable-volume 23 and elastic container 17, do not force the pressure differential of the essence of gas own elasticity container 17 discharges, and second variable-volume 23 can not drive to the terminal use as the product gas of gas compressor own elasticity container in future 17.On the contrary, when the product gas of respective amount flowed into elastic container 17, complemental air flowed out from second variable-volume 23.Between the elastic container 17 and second variable-volume 23, do not have the pressure differential of essence that gas is pressed into elastic container 17, and second variable-volume 23 does not play a part gas is pressed into elastic container 17.The pressure of the product gas in the elastic container 17 is maintained by the product gas pressure from air-seperation system 5, and is provided by the product gas pressure from air-seperation system 5 by the product gas pressure of product fluid distribution circuit 11 to the terminal use.
Fig. 2 A and 2B show the exemplary embodiment of variable-volume atmosphere storage system 15.In this embodiment, to serve as reasons for example be the capsular bag that the polymeric material of butyl rubber is made to the variable-volume 21 of Fig. 1.The fluid compatible that this polymeric material should hold with capsular bag.In Fig. 2 A, capsular bag 17 is installed in the pressure vessel 203, makes that the wall of capsular bag contacts with the inwall of container when capsular bag is filled with the pressure that is essentially product gas pressure.Variable-volume atmosphere storage system 15 can advantageously design, and make the profile of in this pattern capsular bag adapt to or meet the inner surface of pressure vessel 203, and second variable-volume 219 is substantially zero.In this pattern, the polymeric material of capsular bag may be in unstretched condition, and wherein polymeric material can be ignored or be substantially zero in the tensile atrain that is parallel to substantially on the capsular bag outer surface direction.Alternatively, the polymeric material of the capsular bag in this pattern can be in extended state, and wherein polymeric material is being parallel to tensile atrain on the capsular bag outer surface direction substantially for just.
The outlet/inlet passage 205 of capsular bag 17 passes the neck 207 with the pressure vessel 203 of passage 25 appearance similars, and is sealably remained on by flange part 209 in the outlet of opening, and this flange part 209 contacts with the surface of container flange 211.Pairing edge (not shown) is sealed in flange part 209 on the surface of container flange 211.Also can imagine with the exit seal of capsular bag 17 other method to the outlet of pressure vessel 203 these method energy minimizations or eliminate the possibility of the unexpected stretching of capsular bag wall.Pressure vessel 203 has the wall of the rigidity of being essentially, and can be made by sufficiently rigid any material on the operating pressure scope.This material typically is carbon steel or other steel alloy, but also may be other known nonmetallic materials of fiber reinforced polymeric material or pressure vessel prior art field.Pressure vessel 203 comprises that complemental air inlet/outlet 213 is connected 215 with optionally ventilating.
The structure of capsular bag 201 when Fig. 2 B shows variable-volume atmosphere storage system 15 and is in following pattern, this moment, gas was fetched from the inside of capsular bag 17, being fed to the terminal use greater than the product gas flow rate of the nitrogen production capacity in the air-seperation system 5.In this pattern, when internal volume 21 minimizings and variable-volume 219 increases, bag shrinks also folding as shown in the figure.When capsular bag is shunk, wall bending, the inner structure part restriction of container 203 because bag is not stressed with minimum bend stress.When complemental air flowed into inlet/outlet 213 with molar flow rate substantially the same with the product gas of fetching by opening 205 and substantially the same pressure, the minimizing of internal volume 21 was corresponding to the increase of second variable-volume 219.
The combination of the complemental air controller of variable-volume atmosphere storage system 15 and Fig. 1 has at least two operation functions: when (1) surpasses the product capacity of air-seperation system 5 when terminal use's demand, provide product gas; (2) back pressure on the control air-seperation system 5, thus product purity kept.When air-seperation system 5 for when not having product to produce the PSA system of circular flow in period, variable-volume atmosphere storage system has the 3rd function.The 3rd function provides buffer volumes, so that can not provide product to the terminal use during PSA has generation period.For example, in individual layer PSA system or the two-layer system with the operation of interlayer gas transfer step, this nothing can take place produce period.
Fig. 3 shows the schematic pipe-line system of a non-limiting example of the present invention and uses the schematic diagram of instrument, and this embodiment has utilized and has been integrated with cryptomere type storage tank and thinks that the terminal use provides the pressure swing adsorption system of nitrogen product.In the present embodiment, the pressurization unstripped gas provides to the pressure of 160psig with 110psig by pipeline 301, selectively filters in filter 303, and flows through check valve 305.Should be filtered with this dry pressurization unstripped gas to be provided by terminal use or separation of air compressibility (not shown).The first of unstripped gas flows by pipeline 307 and the second portion of unstripped gas flows by pipeline 309, thinks that the valve operation provides pilot air, as following the description.Portion of air in the pipeline 307 flows by pipeline 313 and thinks the double-deck PSA system gas of supplying raw materials, and the second portion air flows complemental air is provided to capsular bag, as following the description by pipeline 313.
Pressure swing adsorption system 315 comprises two absorbent containers 317,319, and this absorbent container comprises the oxygen selected adsorbent, for example carbon molecule screen material.The PSA system is included in the flow control valve 321 of container inlet end, at the flow control valve 323 and the flow control valve between the container products end 325 of container products end.These flow control valves move the circulation step that influences psa process as described below with steering current circularly.These valves can be the known pneumatic operated valve of rotary valve, solenoid operated valve or prior art of any kind.In this embodiment, valve can be the pneumatic coil casing valve with solenoid-actuated pilot air control.The pilot air that enters these valves provides by pipeline 327,329 and 331.
Pilot air flows to the solenoid in flow control valve 321,323 and 325, and these valves are controlled by PSA logic controller 333 by holding wire 335,337 and 339 respectively.PSA logic controller 333 receives control signals by holding wire 341 from logic controller 343, and the step that circulates by holding wire 335,337 and 339 control PSA when turn round in the PSA system.Logic controller 343 is based on pressure-activated in terminal use's gas flow, gas pressure in the cryptomere jar and complemental air pipeline and stop the running of PSA system, as following the description.Alternatively, logic controller 333 and 343 can make up in independent logic controller.
In this embodiment, two contactors 317 and 319 separately by pipeline 345 and 347 in inlet end and 321 mobile connections of flow control valve.The pressurization unstripped gas is fed to control valve 321 by pipeline 311.PSA waste gas from flow control valve 321 flows to muffler 353 by pipeline 349,351 and 352, and this waste gas 355 is discharged into atmosphere by the road.Contactor 317 and 319 product end separately by pipeline 357 and 359 with 323 mobile connections of control valve.The product end of contactor by the road 361, hole 363 and control valve 325 and flowing be communicated with.Control valve 323 by the road 365 and hole 367 and check valve 369 flow and be communicated with, and product nitrogen provides by product fluid supply line 371.
The PSA system can be according to by the following exemplary cycle step operation of logic controller 333 and control valve 321,323 and 325 controls:
1) the pressurization unstripped gas is by the inlet end of valve 321 and pipeline 345 inflow contactors 317, and container is pressurized to operating pressure by unstripped gas, and oxygen is selectively absorbed therein, and product nitrogen is retrieved by pipeline 357 and valve 323.During this pressurization/step that manufactures a product of contactor 317, contactor 319 is with regeneration or the operation of blowdown step, wherein the oxygen of previous absorption is disengaged, and mobile by pipeline 347, valve 321, pipeline 349, pipeline 351, pipeline 352 and silencer 353 with void space gas, and waste gas is discharged in the atmosphere by pipeline 355.
2) the product end of contactor 317 is placed in the product end of contactor 319 is mobile and is communicated with, this contactor 319 is just finished its blowdown or regeneration step, and gas-pressurized flows to contactor 319 from contactor 317, thereby makes the pressure in the container be increased to intermediate level.During this step, system produces no nitrogen product gas.
3) contactor 317 is with blowdown or regeneration step operation, wherein, the oxygen of previous absorption is disengaged, and flows by pipeline 345, valve 321, pipeline 349, pipeline 351, pipeline 352 and silencer 353 with void space gas, and waste gas is discharged in the atmosphere by pipeline 355.In the meantime, unstripped gas flow into the feed end of contactor 319 by valve 321 and pipeline 347, and in this contactor 319, oxygen is selectively adsorbed, and product nitrogen is retrieved by pipeline 359 and valve 323.
4) the product end of contactor 317 is placed in the product end of contactor 319 is mobile and is communicated with, this contactor 319 is just finished its pressurization/regeneration step, and repressurize gas flows to contactor 317 from contactor 319, thereby makes the pressure in the container be pressurized to intermediate level.During this step, system produces no nitrogen product gas.
Step (1) repeats in a looping fashion to (4).Between each step, can insert of short duration non-current period, to reserve the time that valve 321,323 and 325 is changed to the next position.In one exemplary embodiment, the duration of each step may be as follows: (1) supercharging/step that manufactures a product, 55.5 seconds; (2) by the step-down of container to the transmission of container gas, 4.5 seconds; (3) the of short duration non-current period of blowdown or regeneration, 55.5 seconds; (4) by the supercharging of container to the transmission of container gas, 4.5 seconds; And the of short duration non-current cycle between each step is about 0.5 second.The total duration of a circulation in this example is 122 seconds.
If desired, can use the contactor and other the PSA circulation of other number.For example, can use single containment system, but since product-free gas generation during blowdown/regeneration step, the variable-volume atmosphere storage system that needs are bigger.Alternatively, can use plural contactor, this will make unbroken product carry becomes possibility, but required pipe-line system and valve system will be more complicated.
PSA described above system can think the product air-flow that the terminal use provides to be needed with the variable-volume atmosphere storage system and the complemental air system integration.Refer again to Fig. 3, the major part of the pressurization unstripped gas in the pipeline 313 is 371 flow valves 373 by the road, and its less important part by the road 375 for the operation valve 373 pilot air is provided.According to transmitting the signal of coming from logic controller 343 through holding wire 377, valve 373 is with a kind of mode operation in two kinds of patterns: in first pattern, air 379 is supplied to complemental air by the road, and in second pattern, when the remaining make-up air in the make-up air loop by valve 373, hole 381, pipeline 383, air pipeline 351 and 352, when silencer 353 is drawn back, be cut off from the air stream of pipeline 371.
When valve 373 moved under first pattern, make-up air by the road 379, hole 385 and pipeline 387 flow to second variable-volume 23 of variable-volume atmosphere storage system 15.When the product fluid distribution circuit 11 of product gas demand pass through to(for) the user surpassed the capacity of PSA system 315, this air-flow compensation was from the product nitrogen gas of capsular bag or elastic container 17 outflows.The part of the gas of tap hole 385 389 flows to hole 391 by the road, and by the road 392,352, silencer 353 and pipeline 355 discharge therefrom.The flow cross section area in hole is chosen to make (1) complemental air to the molar flow rate adequate remedy of second variable-volume 23 13 molar flow rates that flow out the product gas of the capsular bag or first variable-volume 21 by the road; And (2) pressure in the pipeline 387 and second variable-volume 23 is substantially equal to the pressure in the capsular bag or first variable-volume 21.
When valve 373 moves under second pattern, be cut off from the air stream of pipeline 371, and the remaining complemental air in the complemental air loop by valve 373, hole 381, pipeline 383, air pipeline 351 and 352 and silencer 353 flow back to.In addition, complemental air flows back to by pipeline 389, hole 391, pipeline 392, pipeline 352, silencer 353 and air pipeline 355.Ventilating gas enters the product gas of the capsular bag or first variable-volume 21 by pipeline 13 compensation.When capsular bag or first variable-volume 21 were full of, all complemental airs all were discharged from, and the pressure in the complemental air pipeline is near atmospheric pressure.
Flow detection switch 393 detects flows, and when the flow rate product fluid distribution circuit 11 in when being scheduled to flow rate, pass the signal along to logic controller 343 by holding wire 394.When being lower than predetermined flow rate, flow detection switch 393 is often opened, and when being equal to or higher than this flow rate, flow detection switch 393 cuts out.
The pressure that pressure detection switch 395 detects in the complemental air pipeline 387, and when the pressure in the pipeline 387 surpasses first predetermined pressure, signal is passed to logic controller 343 by holding wire 396.When being lower than first predetermined pressure, pressure detection switch 395 is opened, and when being equal to or higher than this pressure, pressure detection switch 395 is closed.
Pressure in pressure detection switch 397 signal pipings 13 (being substantially equal to the pressure in the capsular bag or first variable-volume 17), and when the pressure in the pipeline 13 surpasses second predetermined pressure, signal is passed to logic controller 343 by holding wire 398.When being lower than second predetermined pressure, pressure detection switch 397 is closed, and when being equal to or higher than this pressure, pressure detection switch 395 is opened.
Can be described with the explanation embodiments of the invention typical operating sequence.This order is since first pattern, system in this pattern among Fig. 3 is in standby, not by the flow of terminal use by 11 requirements of product fluid distribution circuit, under the required normal pressure of terminal use, the capsular bag or first variable-volume 21 are full, and PSA system 315 inertias.In this first pattern, flow switch 393 is opened, and pressure detection switch 395 is opened, and pressure detection switch 397 is closed.Logic controller 343 remains on primary importance with valve 373, and wherein the compensation current by pipeline 371 is cut off, and the complemental air air pipeline is communicated with Atmospheric Flow by pipeline 352, silencer 353 and air pipeline 355.Logic controller 343 also indicates PSA logic controller 33 to stop valve 321,323 and 325 activities.
When the terminal use requires product by product fluid distribution circuit 11, begin second operational mode.Air-flow to the terminal use is provided by pipeline 13 by the capsular bag or first variable-volume 21 immediately, and flow detection switch 393 cuts out rapidly, and passes to logic controller 343 from the signal of switch through holding wire 394.This logic controller sends signal by holding wire 377, this signal activation valve 373, will sending into second variable-volume 23 by pipeline 379, hole 385 and pipeline 387 from the complemental air of pipeline 371, thus the product gas that compensation is fetched from capsular bag or first variable-volume 21.With previously described the same, be substantially equal to product gas pressure in the capsular bag or first variable-volume 21 in order to keep demand pressures in second variable-volume 23, some compensation currents are discharged by hole 391.
When pressure inductor 395 is closed, and after being delivered to logic controller 343 from the signal of switch by holding wire 396, the 3rd operational mode will begin in a minute.Logic controller is delivered to PSA logic controller 333 by holding wire 341 with signal, and this logic controller activates the operation of PSA system 315.Product nitrogen from the PSA system begins to flow by pipeline 365, flow control hole 367, check valve 369 and pipeline 371.When terminal use's product demand is less than design when output of PSA system, flow to the terminal use from the part of the product gas of pipeline 371 by pipeline 11, and its remainder flows to refill the capsular bag or first variable-volume 21 by pipeline 13.Till this process lasts till that capsular bag is full of.When terminal use's product demand was exported greater than the design of PSA system, all product gas from pipeline 371 flow to the terminal use by pipeline 11, and provide surplus products gas by the capsular bag or first variable-volume 21 by pipeline 13.This process may last till that capsular bag becomes till the sky, and the volume of the capacity of PSA system 315 and capsular bag or first variable-volume 21 is enough to satisfy maximum terminal use's product demand but integrated system typically is designed to.
When terminal use's product demand stops, begin the 4th operational mode.Flow switch 393 is opened, and passes to logic controller 343 from the signal of switch by holding wire 394.This logic controller sends by holding wire 377 and makes valve 373 inactivated signals, and this cuts off the complemental air from pipeline 371.The interior maintenance activity of section at the fixed time of this PSA system, and if necessary, during the initial part of this time period, operation is to fill up the capsular bag or first variable-volume 21.For the remainder of this time period, the PSA system keeps activating, and makes and crosses pipeline 365 even without air communication, and valve 321,323 and 325 still continues operation.At this predetermined amount of time (for example may be about 5 minutes) end, system return to as described above first pattern and valve 321,323 and 325 out of service.
The run time that product gas is just flowing into the capsular bag or first variable-volume 21 arbitrary, molar flow rate and complemental air the average absolute value by the difference molar flow rate in hole 391 between of complemental air by hole 385 is substantially equal to the product gas molar flow rate in the product fluid supply line 371 and the average absolute value of the difference between the product gas molar flow rate in the product gas distribution circuit 11.Similarly, the run time that product gas flows out the capsular bag or first variable-volume 21 arbitrary, molar flow rate and complemental air the average absolute value by the difference molar flow rate in hole 391 between of complemental air by hole 385 is substantially equal to the product gas molar flow rate in the product fluid supply line 371 and the average absolute value of the difference between the product gas molar flow rate in the product gas distribution circuit 11.
Although provide fluid generation, storage and the distribution system of nitrogen product to do to illustrate to being used in the above, this system can be used to provide any gas, supercritical fluid or the liquid compatible with the material of PSA system, capsular bag, pipeline and instrument component.
Example
System in the service chart 3 is used for tyre bead driving fit (beadseating) so that nitrogen product is supplied with, tire is installed and the doughnut service system of tire aeration step.By product fluid distribution circuit 11,, supply the nitrogen of 99.5% bulk purity with discharge pressure and the ambient temperature that is about 140psig.Flow rate and reaches the maximum flow rate of 25SCFM usually between 0 to 8SCFM (scfm) once in a while during tyre bead driving fit step.The gas products demand changes randomly, and depends on tire installation system operator's activity.
As described above, PSA system 315 utilizes absorbent container, and this absorbent container has 5.9 inches interior diameter, 39 inches length, and each container comprises 26.5 pounds carbon molecule filter screen.This PSA system is according to the periodic duty to continue 122 seconds described above, and is designed to provide during up to 4SCFM at throughput rate the product purity of at least 99% volume.When product flowrate surpassed 4SCFM, product purity reduced, and when throughput rate is 7SCFM, reduces to the purity of 96% volume.
End user device is by the pressure supply air of pipeline 301 with 150psig.Product gas pressure in PSA product pressure in the pipeline 371, capsular bag or first variable-volume 21 and the complemental air pressure average out to 140psig in second variable-volume 23.The capsular bag or first variable-volume 21 are made by butyl rubber, and when it is filled and contacts with the inner surface of pressure vessel 19, have 4.7 cubic feet volume.
Flow detection switch 393 is often opened under 1.2SCFM, and closes when being equal to or greater than this flow rate.Pressure detection switch 395 is often opened under 80psig, and closes when being equal to or greater than this pressure.Pressure detection switch 397 is often opened under 95psig, and closes when being equal to or greater than this pressure.Bore dia is as follows: 363,0.100 inches; 367,0.100 inches; 381,0.021 inches; 385,0.050 inches; 391,0.018 inches.
The embodiment of storage described above and distribution system can be used to provide gas-pressurized for the application of any kind with variable and interrupted flow.Some representational application include but not limited to: inertia jar and inert containers, the packing of product, pipeline clean and at the operating equipment in doughnut shop.In the application of the operating equipment in doughnut shop, for example, gas can be used for tire installation and removal machinery, tire inflation, impact wrench and other pneumatic tool.
Claims (25)
1. fluid storage and distribution system comprise:
(a) pressure vessel, it has the rigid walls between inner surface, inside, outside and described inside and the described outside;
(b) separator movably, it places the inside of described pressure vessel, and wherein, described separator is divided into first variable-volume and second variable-volume with described inside, and wherein said first variable-volume does not flow with described second variable-volume and is communicated with;
(c) first passage, it passes the described rigid walls of described pressure vessel and enters described first variable-volume, and wherein, described first passage is suitable for product fluid being introduced described first variable-volume and described product fluid being fetched from second variable-volume;
(d) second channel, it passes the described rigid walls of described pressure vessel and enters described second variable-volume, and wherein, described second channel is suitable for complemental air being introduced described second variable-volume and described complemental air being fetched from the one the second variable-volumes; And
(e) complemental air supply system, it comprises:
(1) complemental air pipeline, it places described second channel with compensation current is mobile and is communicated with;
(2) first holes, it is placed in the described complemental air pipeline and has upstream side and downstream;
(3) complemental air air pipeline, itself and the connection that becomes to flow of the position of described complemental air pipeline between the downstream in described second channel and described first hole, wherein, described complemental air air pipeline is suitable for complemental air self compensation air pipe is discharged in the atmosphere; And
(4) second holes, it is placed in the described complemental air air pipeline, and wherein, the cross section flow area in described second hole is less than the cross section flow area in described first hole.
2. the system as claimed in claim 1, it is characterized in that, described first variable-volume of the inside of described pressure vessel and described second variable-volume are limited by separator movably, and described movably separator is selected from the group that comprises following parts: capsular bag, telescoping tube, elastic diaphragm and form the piston of slidable sealing with the inner surface of described pressure vessel.
3. fluid storage and distribution system comprise:
(a) pressure vessel, it has the rigid walls between inner surface, inside, outside and described inside and the described outside;
(b) place the flexible fluid container of the inside of described pressure vessel, wherein, the opening that the described rigid walls that described flexible fluid container has inside, outer surface and passes described pressure vessel couples together the inside and the first passage of this container;
(c) first variable-volume that limits by the inside of described flexible fluid container, wherein, described first passage flows with product fluid supply line and product fluid distribution circuit and is communicated with, and is suitable for product fluid being introduced described first variable-volume and described product fluid being fetched from described first variable-volume;
(d) second variable-volume that limits by the outer surface of the inner surface of described pressure vessel and described flexible fluid container, wherein, described second variable-volume flows with second channel and is communicated with, and described second channel is suitable for complemental air being introduced second variable-volume and described complemental air being fetched from described second variable-volume; And
(e) complemental air supply system, it comprises:
(1) complemental air pipeline, it places described second channel and compensation current to flow and is communicated with;
(2) first holes, it is placed in the complemental air pipeline and has upstream side and downstream;
(3) complemental air air pipeline, itself and the connection that becomes to flow of the position of described complemental air pipeline between the downstream in described second channel and described first hole, wherein, described complemental air air pipeline is suitable for complemental air is put in the atmosphere from described complemental air tubes rows; And
(4) second holes, it is placed in the described complemental air air pipeline, and wherein, the cross section flow area in described second hole is less than the cross section flow area in described first hole.
4. system as claimed in claim 3 is characterized in that, described product fluid is a nitrogen.
5. system as claimed in claim 3 is characterized in that, described complemental air is an air.
6. system as claimed in claim 3 is characterized in that, the capsular bag of described flexible fluid container for being made by polymeric material.
7. system as claimed in claim 6 is characterized in that, when the outer surface of described capsular bag contacts with the inner surface of rigid pressure container, make described second variable-volume be substantially zero, and the polymeric material of described capsular bag is in unstretched condition.
8. system as claimed in claim 4 is characterized in that described system comprises the pressure adsorption system, and described pressure adsorption system is suitable for retrieving the nitrogen of self-pressurization air feed stream.
9. system as claimed in claim 4 is characterized in that described system comprises the membrane separation system, and described membrane separation system is suitable for retrieving the nitrogen of self-pressurization air feed stream.
10. system as claimed in claim 3, described system comprises triple valve, described triple valve has first port, second port and the 3rd port, wherein, described first port is connected to compensation current, described second port is connected to the described complemental air pipeline of the upstream side in described first hole, described the 3rd port is connected to additional air pipeline, and the 3rd hole in additional air pipeline, it is characterized in that, described triple valve is suitable in primary importance and second place operation, and this primary importance places the compensation current and the described complemental air pipeline of the upstream side in described first hole to flow and is communicated with, and closes described additional air pipeline simultaneously; This second place places the 3rd air pipeline and the described complemental air pipeline of the upstream side in described first hole to flow and is communicated with, and closes compensation current simultaneously.
11. the method for storage and distributing fluids comprises:
(a) provide fluid storage and distribution system, this system comprises:
(1) pressure vessel, it has the rigid walls between inner surface, inside, outside and described inside and the described outside;
(2) place the flexible fluid container of the inside of described pressure vessel, wherein, the opening that the rigid walls that described flexible fluid container has inside, outer surface and passes described pressure vessel couples together the inside and the first passage of container;
(3) first variable-volume that limits by the inside of described flexible fluid container, wherein, described first passage flows with product fluid supply line and product fluid distribution circuit and is communicated with, and is suitable for product fluid being introduced described first variable-volume and described product fluid being fetched from described first variable-volume;
(4) second variable-volume that limits by the outer surface of the inner surface of described pressure vessel and described flexible fluid container, wherein, described second variable-volume flows with second channel and is communicated with, and described second channel is suitable for complemental air being introduced described second variable-volume and described complemental air being fetched from described second variable-volume; And
(5) complemental air supply system, it comprises:
(i) complemental air pipeline, it places described second channel and compensation current to flow and is communicated with;
(ii) first hole, it is placed in the described complemental air pipeline and has upstream side and downstream;
(iii) complemental air air pipeline, itself and the connection that becomes to flow of the position of described complemental air pipeline between the downstream in described second channel and described first hole, wherein, described complemental air air pipeline is used for complemental air is put into atmosphere from described complemental air tubes rows; And
(iv) second hole, it is placed in the described complemental air air pipeline, and wherein, the cross section flow area in described second hole is less than the cross section flow area in described first hole;
(b) in the interim very first time, product fluid is fetched from described first variable-volume, with described product fluid with mix from the product fluid of product fluid supply line so that the product mix fluid to be provided, described product mix fluid is incorporated into the product fluid distribution circuit, and complemental air is incorporated into described second variable-volume by described first hole and described complemental air pipeline; And
(c) during second time interval, to be incorporated into the product fluid distribution circuit from the first of the described product fluid on product fluid supply tube road, to be incorporated into described first variable-volume from the second portion of the described product fluid on product fluid supply tube road, and will fetch from described second variable-volume by described second hole and described complemental air air pipeline from the complemental air of described second variable-volume.
12. method as claimed in claim 11, it is characterized in that, during the 3rd time interval, be introduced in the product fluid distribution circuit from all product fluid of product fluid supply line, and do not have complemental air to be introduced in described second variable-volume or fetch from described second variable-volume.
13. method as claimed in claim 11 is characterized in that, described product fluid is a nitrogen, and described complemental air is an air.
14. a gas generation, storage and distribution system comprise:
(a) pressure vessel, it has the rigid walls between inner surface, inside, outside and described inside and the described outside;
(b) place the flexible gas container of the inside of described pressure vessel, wherein, the opening that the rigid walls that described flexible gas container has inside, outer surface and passes described pressure vessel couples together the inside and the first passage of container;
(c) first variable-volume that limits by the inside of described flexible gas container, wherein, described first passage becomes the connection of directly flowing with the product gas supply line with the product gas distribution circuit, and is suitable for product gas being introduced described first variable-volume and product gas being fetched from described first variable-volume;
(d) second variable-volume that limits by the outer surface of the inner surface of described pressure vessel and described flexible fluid container, wherein, the connection that becomes to flow of described second variable-volume and second channel, described second channel is suitable for complemental air being introduced described second variable-volume and described complemental air being fetched from described second variable-volume; And
(e) pressure swing adsorption system, it comprises at least one container that comprises sorbing material, described sorbing material is suitable for preferentially adsorbing stronger adsorbable component from admixture of gas, described admixture of gas comprises stronger adsorbable component and time strong adsorbable component, so that the discharge gas of enriching to be provided in described strong adsorbable component, wherein, described pressure swing adsorption system comprises outlet conduit, and described outlet conduit is suitable for discharge gas is directly offered described first variable-volume by product gas supply line and described first passage.
15. system as claimed in claim 14 is characterized in that, the capsular bag of described flexible fluid container for being made by polymeric material.
16. system as claimed in claim 15 is characterized in that, when the outer surface of described capsular bag contacts with the inner surface of rigid pressure container, make described second variable-volume be substantially zero, and the polymeric material of described capsular bag is in unstretched condition.
17. the method for a generation, storage and distribution of gas comprises:
(a) provide atmosphere storage and distribution system, it comprises:
(1) pressure vessel, it has the rigid walls between inner surface, inside, outside and described inside and the described outside;
(2) place the flexible gas container of the inside of described pressure vessel, wherein, the opening that the rigid walls that described flexible gas container has inside, outer surface and passes described pressure vessel couples together the inside and the first passage of container;
(3) first variable-volume that limits by the inside of described flexible gas container, wherein, described first passage becomes the connection of directly flowing with the product gas supply line with the product gas distribution circuit, and is suitable for product gas being introduced first variable-volume and described product gas being fetched from described first variable-volume;
(4) second variable-volume that limits by the outer surface of the inner surface of described pressure vessel and described flexible fluid container, wherein, the connection that becomes to flow of described second variable-volume and second channel, described second channel is suitable for complemental air is introduced described second variable-volume and by the complemental air pipeline described complemental air being fetched from described second variable-volume by the complemental air pipeline; And
(b) material gas mixture is incorporated into the contactor that comprises sorbent material, described material gas mixture comprises stronger adsorbable component and time strong adsorbable component, preferentially on sorbent material, adsorb the part in the described stronger adsorbable component, the discharge gas of fetching enriching in described time strong adsorbable component from described contactor to be providing product gas, and described product gas is directly introduced the product gas supply line.
18. want 17 described methods as right, it is characterized in that:
(c) in the interim very first time, product gas is fetched from described first variable-volume, with described product gas with from the combination of the product gas of product gas supply line so that product mix gas to be provided, described product mix gas is incorporated into the product gas distribution circuit, and complemental air is incorporated into described second variable-volume by first hole and described complemental air pipeline; And
(d) during second time interval, to be incorporated into the product gas distribution circuit from the first of the product gas of product gas supply pipeline, to be incorporated into described first variable-volume from the second portion of the product gas of product gas supply pipeline, and will fetch from described second variable-volume by second hole and complemental air air pipeline from the complemental air of described second variable-volume.
19. method as claimed in claim 18, it is characterized in that, at described very first time interval or during described second time interval, molar flow rate and described complemental air the average absolute value by the difference molar flow rate in described second hole between of described complemental air by described first hole is substantially equal to the average absolute value of the difference between the molar flow rate of the molar flow rate of the described product gas in the product fluid supply line and the described product gas in the product gas distribution circuit.
20. method as claimed in claim 17 is characterized in that, described material gas mixture is an air, and described strong adsorption component is nitrogen.
21. method as claimed in claim 20 is characterized in that, described complemental air is an air.
22. method as claimed in claim 21 is characterized in that, described material gas mixture and described complemental air are provided by common forced air source of supply.
23. method as claimed in claim 17, it is characterized in that described method comprises product gas pressure, the complemental air pressure in described second variable-volume of detection and the product gas flow rate in the testing product gas service pipes road that detects in described first variable-volume.
24. method as claimed in claim 23, it is characterized in that, when the described complemental air pressure in described second variable-volume during greater than first specified pressure, when the described product gas pressure in described first variable-volume during less than second specified pressure, and when the described product gas flow rate in the described product gas distribution circuit when specifying flow rate, (i) material gas mixture stream is incorporated in the contactor, product gas stream is fetched from adsorbing in the container, and described product gas is introduced directly in the product gas supply line; And (ii) compensation current is incorporated into described second variable-volume or compensation current is fetched from described second variable-volume.
25. method as claimed in claim 24, it is characterized in that, when the described complemental air pressure in described second variable-volume during less than first specified pressure, when the described product gas pressure in described first variable-volume during less than second specified pressure, and when the described product gas flow rate in the described product gas distribution circuit when specifying flow rate, (i) termination enters the material gas mixture stream of contactor, the product gas stream that termination is fetched from contactor, and (ii) stop entering the compensation current of described second variable-volume or the compensation current that termination is fetched from described second variable-volume.
Applications Claiming Priority (3)
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|---|---|---|---|
| US80850806P | 2006-05-25 | 2006-05-25 | |
| US60/808,508 | 2006-05-25 | ||
| US11/748,778 | 2007-05-15 |
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| CN101528323A true CN101528323A (en) | 2009-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007800190131A Pending CN101528323A (en) | 2006-05-25 | 2007-05-23 | Fluid storage and dispensing system |
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| WO2023077810A1 (en) * | 2021-11-08 | 2023-05-11 | 青岛海尔空调电子有限公司 | Gas supply system for suspension bearing and refrigerating system |
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