NO20220105A1 - Flow stabilizing gas regulator - Google Patents
Flow stabilizing gas regulator Download PDFInfo
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- NO20220105A1 NO20220105A1 NO20220105A NO20220105A NO20220105A1 NO 20220105 A1 NO20220105 A1 NO 20220105A1 NO 20220105 A NO20220105 A NO 20220105A NO 20220105 A NO20220105 A NO 20220105A NO 20220105 A1 NO20220105 A1 NO 20220105A1
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- Prior art keywords
- gas
- seat
- chamber
- pressure
- piston
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- 230000000087 stabilizing effect Effects 0.000 title 1
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 24
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/023—Special adaptations of indicating, measuring, or monitoring equipment having the mass as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/01—Control of flow without auxiliary power
- G05D7/0106—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
- G05D7/012—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule the sensing element being deformable and acting as a valve
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/01—Control of flow without auxiliary power
- G05D7/0173—Control of flow without auxiliary power using pivoting sensing element acting as a valve mounted within the flow-path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0338—Pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0382—Constructional details of valves, regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0388—Arrangement of valves, regulators, filters
- F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/036—Very high pressure (>80 bar)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/05—Improving chemical properties
- F17C2260/056—Improving fluid characteristics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0324—With control of flow by a condition or characteristic of a fluid
- Y10T137/0368—By speed of fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
Description
Beskrivelse Description
Oppfinnelsen angår en strømningsstabiliserende gassregulator som konstruert for å kunne koples opp mot høytrykks gasstanker med formål å tømme disse med en høy og mest mulig stabil strømningsrate. Regulatoren omfatter et hus med et innløp for mottak av gass, et utløp for avgivelse av tilført gass til omgivende atmosfære, og en ventilinnretning som regulerer strømningstverrsnittet gjennom huset slik at en forinnstilt strømningsrate kan opprettholdes mest mulig stabilt etter hvert som tanktrykket faller. En regulator ifølge oppfinnelsen er spesielt innrettet til tømming av hydrogentanker, men virkemåten gjør den relevant for de fleste gasstyper. The invention relates to a flow-stabilizing gas regulator designed to be connected to high-pressure gas tanks with the aim of emptying these with a high and most stable flow rate. The regulator comprises a housing with an inlet for receiving gas, an outlet for releasing added gas to the surrounding atmosphere, and a valve device that regulates the flow cross-section through the housing so that a preset flow rate can be maintained as stable as possible as the tank pressure falls. A regulator according to the invention is specially designed for emptying hydrogen tanks, but the way it works makes it relevant for most types of gas.
Ved tømming av trykktanker er det i dag vanlig å benytte dyser eller innsnevringer som begrenser massestrømmen ut av angjeldende tanker til et sikkerhetsmessig forsvarlig nivå. Strømningsraten for gass avgis gjennom en fast dyse vil grovt sett avta lineært med trykket oppstrøms dysen. Følgelig vil strømningsraten avta med anslagsvis faktor 10 fra tømming iverksettes og fram til tanktrykket har falt til en tiendedel. For ulike applikasjoner vil sikkerhetsmessige aspekter tilsi ulik dimensjoneringen av dysen, men det vil normalt anses som fordelaktig å kunne opprettholde massestrømmen mest mulig stabilt på et valgt maksimalnivå under hele tømmeprosessen. Dette krever at strømningstverrsnittet for gassen må kunne økes i samsvar med fallende gasstrykk. When emptying pressure tanks, it is common today to use nozzles or constrictions that limit the mass flow out of the tanks in question to a level that is acceptable from a safety point of view. The flow rate of gas emitted through a fixed nozzle will roughly decrease linearly with the pressure upstream of the nozzle. Consequently, the flow rate will decrease by an estimated factor of 10 from the time emptying is initiated until the tank pressure has dropped to one-tenth. For different applications, safety aspects will require different dimensions of the nozzle, but it will normally be considered advantageous to be able to maintain the mass flow as stable as possible at a selected maximum level during the entire emptying process. This requires that the flow cross-section for the gas must be able to be increased in accordance with falling gas pressure.
En gassregulator ifølge oppfinnelsen har en virkemåte som minimerer fare for kritisk funksjonssvikt. Den er innrettet til at gassens strømningstverrsnitt ligger på forstilt minstenivå idet tømmeprosessen igangsettes, og sikrer derved at strømningsraten uansett ikke vil være mindre enn det som oppnås ved bruk av fast dyse. Den innebygde ventilinnretningen er gjerne dimensjonert slik at strømningstverrsnittet kan økes med en faktor 10 i forhold til det forstilte minstenivå. A gas regulator according to the invention has a mode of operation that minimizes the risk of critical malfunction. It is arranged so that the gas flow cross-section is at a pre-set minimum level when the emptying process is initiated, thereby ensuring that the flow rate will not be less than that achieved when using a fixed nozzle. The built-in valve device is usually dimensioned so that the flow cross-section can be increased by a factor of 10 in relation to the preset minimum level.
Kjent teknikk Known technique
En regulator ifølge oppfinnelsen er innrettet for å kunne forestå tømming av tanker som kan være trykksatt til 350 bar og høyere. Den er basert på en ventilinnretning som utnytter trykket på tilført gass til å etablere et meget presist samvirke mellom et pilotlegeme og et vesentlig større ventillegeme som styrer strømningstverrsnittet gjennom huset. Vi er ikke kjent med at det finnes tilsvarende teknologi for denne type formål A regulator according to the invention is designed to be able to manage the emptying of tanks which can be pressurized to 350 bar and higher. It is based on a valve device that utilizes the pressure of supplied gas to establish a very precise interaction between a pilot body and a significantly larger valve body that controls the flow cross-section through the housing. We are not aware of similar technology for this type of purpose
Beskrivelse av oppfinnelsen Description of the invention
Virkemåten for oppfinnelsen vil i det følgende bli forklart med henvisning til fig.1 og fig.2. der The operation of the invention will be explained in the following with reference to fig.1 and fig.2. there
- Fig 1 A og Fig 1B viser to utførelser av komplett reguleringsventil ifølge oppfinnelsen - med to ulike utførelser av et ekspanderbart kammer i huset - Fig 1 A and Fig 1B show two versions of the complete control valve according to the invention - with two different versions of an expandable chamber in the housing
- Fig 2A og 2B viser en overføringsmekanisme i to posisjoner. - Figs 2A and 2B show a transmission mechanism in two positions.
Regulatoren omfatter i foretrukket utførelse et sylinderformet hus 22) med en sentralt anordnet innløp 1) for mottak av komprimert gass, og med et utløp 18) som har tre eller flere porter. Nedstrøms av innløpet er det en sentralt anordnet kanal 25 som på oppstrøms side har et ringformet sete 5) som samvirker med et aksialt forskyvbart ventillegeme 4) slik at strømningstverrsnittet gjennom denne kanalen kan reguleres innenfor definerte verdier ved å endre avstanden mellom dette ventillegemet og setet 5). In a preferred embodiment, the regulator comprises a cylindrical housing 22) with a centrally arranged inlet 1) for receiving compressed gas, and with an outlet 18) which has three or more ports. Downstream of the inlet there is a centrally arranged channel 25 which on the upstream side has an annular seat 5) which cooperates with an axially displaceable valve body 4) so that the flow cross-section through this channel can be regulated within defined values by changing the distance between this valve body and the seat 5 ).
Strømningstverrsnittet gjennom ventilen skal ha en gitt minsteverdi. Dette besørges fortrinnsvis ved at det anordnes en eller flere boringer 23) som tillater gassen å passere utenom kanalen 25). En alternativ løsning på dette er å anordne en stopper som hindrer ventillegemet 4) i å komme helt ned til setet 5). The flow cross-section through the valve must have a given minimum value. This is preferably achieved by arranging one or more bores 23) which allow the gas to pass outside the channel 25). An alternative solution to this is to arrange a stop which prevents the valve body 4) from coming all the way down to the seat 5).
På nedstrømsside av kanalen 25) blir gassen ført radielt ut fra senter av huset via et antall boringer 21), videre ut i en ringformet kanal 20) og derfra til omgivende atmosfære via en innsnevring 19) som er anordnet oppstrøms av utløpet. On the downstream side of the channel 25), the gas is led radially out from the center of the housing via a number of bores 21), further into an annular channel 20) and from there to the surrounding atmosphere via a constriction 19) which is arranged upstream of the outlet.
Gassen som strømmer gjennom huset vil generere et visst trykk på oppstrøms side av innsnevringen 19). Det vil ikke nødvendigvis være en lineær sammenheng mellom dette trykket og massestrømmen av gassen, men det er uvesentlig ettersom ventilinnretningen 2-16) har til oppgave å etablere en mest mulig statisk strømningssituasjon. The gas flowing through the housing will generate a certain pressure on the upstream side of the constriction 19). There will not necessarily be a linear relationship between this pressure and the mass flow of the gas, but that is immaterial as the valve device 2-16) has the task of establishing the most static flow situation possible.
Massestrømmen kan anses for å være konstant så lenge trykket oppstrøms innsnevringen 19) ligger på et konstant nivå i forhold til omgivende atmosfæretrykk. Ventilinnretningen (2-16) vil således ha til oppgave å styre strømningstverrsnittet gjennom kanalen 25) slik at trykknivået oppstrøms innsnevringen 19) holdes mest mulig stabilt på et nivå som samsvarer med ønsket strømningsrate. Innsnevringen 19) kan typisk bli valgt slik at dette nivået ligger på 8–10 bar. The mass flow can be considered to be constant as long as the pressure upstream of the constriction 19) is at a constant level in relation to ambient atmospheric pressure. The valve device (2-16) will thus have the task of controlling the flow cross-section through the channel 25) so that the pressure level upstream of the constriction 19) is kept as stable as possible at a level that corresponds to the desired flow rate. The constriction 19) can typically be chosen so that this level is 8–10 bar.
Reguleringen av strømningstverrsnitt for gassen er basert på at man utnytter trykkenergien i tilført gass til å frembringe kreftene som trengs til for at ventillegemet 4) til enhver tid blir posisjoneres slik at ønsket strømningsrate opprettholdes. Dette oppnås ved hjelp av et kammer III som er innrettet til å endre volum ved lekkasjefri forskyvning av et element 9). Dette elementet er mekanisk koplet til ventillegemet 4), og ved å øke kammerets trykk vil ventillegemet (4) kunne løftes opp fra setet 5) slik at strømningstverrsnittet gjennom huset 1) økes. The regulation of the flow cross-section for the gas is based on utilizing the pressure energy in supplied gas to generate the forces needed for the valve body 4) to be positioned at all times so that the desired flow rate is maintained. This is achieved by means of a chamber III which is designed to change volume by leak-free displacement of an element 9). This element is mechanically connected to the valve body 4), and by increasing the chamber's pressure, the valve body (4) can be lifted up from the seat 5) so that the flow cross-section through the housing 1) is increased.
Ventilinnretningen omfatter et aksialt anordnet stempel (15) som avføler trykkforskjellen mellom oppstrømssiden av innsnevringen (19) og omgivende trykk, og en overføringsmekanisme (13) som sørger for at det vil være en entydig sammenheng mellom en aksial forskyvning av stempelet (15) og en resulterende forskyvning av et pilotlegeme (2). Dette pilotlegemet (2) har en manøverstang 7) som er ført i en kanal (6) som løper aksialt gjennom ventillegemet (4), videre gjennom kammeret III, og via en trang føring (11) fram til et kammer I hvor manøverstangen får kontakt med nevnte overføringsmekanisme 13). The valve device comprises an axially arranged piston (15) which senses the pressure difference between the upstream side of the constriction (19) and ambient pressure, and a transfer mechanism (13) which ensures that there will be a clear connection between an axial displacement of the piston (15) and a resulting displacement of a pilot body (2). This pilot body (2) has a maneuvering rod 7) which is guided in a channel (6) which runs axially through the valve body (4), further through chamber III, and via a narrow guide (11) to a chamber I where the maneuvering rod makes contact with said transfer mechanism 13).
Pilotlegemet (2) er innrettet til å kunne tette mot et ringformet sete (3) som er sentralt anordnet i ventillegemet (4). Når pilotlegemet presses ut fra dette setet strømmer komprimert gass inn i kammer III. Dette frembringer en trykkøkning i dette kammeret, og det genereres krefter som forskyver ventillegemet 4) ut fra setet 5). Ved denne forskyvningen reduseres klaringen mellom setet 3) og pilotlegemet, med den følge at gasstrømmen inn i kammer III reduseres. Dette samvirket mellom pilotlegemet 2) og setet 3) innebærer at ventillegemet 4) slavestyres til å forskyves i samsvar med pilotlegemets forskyvning. Det skyldes at ventillegemet 4) vil posisjoneres slik at det til enhver tid er balanse mellom gasstilførselen til kammer III og gassavgivelse fra kammer II til kammer I via passasjen mellom manøverstangen 7) og føringen 11). The pilot body (2) is arranged to be able to seal against an annular seat (3) which is centrally arranged in the valve body (4). When the pilot body is pushed out from this seat, compressed gas flows into chamber III. This produces an increase in pressure in this chamber, and forces are generated which displace the valve body 4) out from the seat 5). With this displacement, the clearance between the seat 3) and the pilot body is reduced, with the result that the gas flow into chamber III is reduced. This cooperation between the pilot body 2) and the seat 3) means that the valve body 4) is slave controlled to be displaced in accordance with the displacement of the pilot body. This is because the valve body 4) will be positioned so that there is at all times a balance between the gas supply to chamber III and gas release from chamber II to chamber I via the passage between the operating rod 7) and the guide 11).
Figurene 1A og 1B viser to alternative utførelser av kammeret III. Figures 1A and 1B show two alternative designs of chamber III.
I fig.1A er dette kammeret anordnet mellom et sylindrisk bolt 10) og et forskyvbart element 9) med en hettelignende form. I fig 1B er kammer III etablert mellom et fastmontert element 10) i form av en hylse og et forskyvbart element 9) i form av et stempel med tverrsnitt A. In fig.1A, this chamber is arranged between a cylindrical bolt 10) and a displaceable element 9) with a cap-like shape. In Fig 1B, chamber III is established between a fixed element 10) in the form of a sleeve and a displaceable element 9) in the form of a piston with cross-section A.
Trykket som etableres i kammer III vil påvirke trykkflaten A. Denne trykkflaten vil typisk bli valgt til å være 4 ganger større enn tverrsnittet på det ringformede setet 5). I en driftsituasjon vil følgelig trykket i kammer III måtte være omtrentlig en fjerdedel av innløpstrykket for at presset mot elementet 9) skal være tilstrekkelig stort til at ventillegemet 4) kan bli presset ut fra setet 5). The pressure established in chamber III will affect the pressure surface A. This pressure surface will typically be chosen to be 4 times larger than the cross-section of the annular seat 5). In an operating situation, the pressure in chamber III will therefore have to be approximately a quarter of the inlet pressure in order for the pressure against the element 9) to be sufficiently great for the valve body 4) to be pushed out from the seat 5).
Setet 3) kan typisk ha en innvendig diameter på anslagsvis 3 mm, og klaringen mellom manøverstangen (7) og føringen (11) kan typisk være 0,02 mm. Ved slik dimensjonering vil gapet mellom pilotlegemet (2) og setet (3) normalt være mindre enn 1/10 mm når det oppnås likevekt mellom tilførsel og avgivelse av gass fra kammer III. Uansett hvilken retning pilotlegemet forskyves vil ventillegemet 4) bli tvunget til å følge etter uten at det oppstår noen signifikant endring av dette gapet før innløpstrykket er for lavt til massestrømmen kan opprettholdes på ønsket nivå. The seat 3) can typically have an internal diameter of approximately 3 mm, and the clearance between the maneuvering rod (7) and the guide (11) can typically be 0.02 mm. With such dimensioning, the gap between the pilot body (2) and the seat (3) will normally be less than 1/10 mm when equilibrium is achieved between the supply and release of gas from chamber III. In whatever direction the pilot body is displaced, the valve body 4) will be forced to follow without any significant change of this gap occurring before the inlet pressure is too low for the mass flow to be maintained at the desired level.
Stemplet 15) påvirkes i retning mot innløpet av kraften fra en forspent fjær 16). Denne forspenningen velges slik at kraften mot stempelet 15) balanserer ut de motsatt rettede trykkreftene som frembringes når trykkforskjellen mellom omgivende trykk og trykket oppstrøms innsnevringen 19) er på valgt nivå (som fortrinnsvis kan være 8 – 10 bar). Trykket oppstrøms innsnevringen 19) avføles i kammer I via en kanal 14), og omgivende trykk avføles via en kanal 17). The piston 15) is influenced in the direction towards the inlet by the force from a pre-tensioned spring 16). This bias is chosen so that the force against the piston 15) balances out the oppositely directed pressure forces which are produced when the pressure difference between the ambient pressure and the pressure upstream of the constriction 19) is at the selected level (which can preferably be 8 - 10 bar). The pressure upstream of the constriction 19) is sensed in chamber I via a channel 14), and the ambient pressure is sensed via a channel 17).
Ved dette oppsettet vil pilotlegemet 2, og dermed ventilelementet 4), til en hver tid bli forskjøvet skyves mot posisjonen der trykket oppstrøms innsnevringen i størst mulig grad opprettholdes på ønsket nivå. With this set-up, the pilot body 2, and thus the valve element 4), will be pushed towards the position where the pressure upstream of the constriction is maintained at the desired level to the greatest extent possible until it is displaced.
Fig.1 A illustrerer en situasjon der ventillegemet 4) er forskjøvet nesten maksimalt vekk fra setet 5), men slik at klaringen mellom pilotlegemet 2) og sete 3) fortsatt er på anslagsvis 1/10 mm. Fig.1 B illustrerer situasjonen at ønsket strømningsnivå oppnås uten at det har vært nødvendig å åpne for gasstrøm via ventillegemet 4). Fig.1 A illustrates a situation where the valve body 4) is displaced almost maximally away from the seat 5), but so that the clearance between the pilot body 2) and seat 3) is still approximately 1/10 mm. Fig.1 B illustrates the situation where the desired flow level is achieved without it having been necessary to open the gas flow via the valve body 4).
Figuren 2A og 2 B viser et forstørret riss av overføringsmekanismen 13) i to posisjoner, Denne overføringsmekanismen er omfatter en festeplate 32) som på den ene siden har feste til en aksling 26) som samvirker med den ene enden av en roterbar første arm 27), og som på den motsatte side har feste til en aksling 30) som samvirker med den ene enden av enden av en roterbar andre arm 31). På den andre enden av armen 31) er det anordnet en første rulle 28) som samvirker med den andre enden av armen 27) som i sitt midtparti har kontakt med manøverstangen 7). Denne mekanismen bevirker at overføringen av kraft fra stempelet 15) til manøverstangen er tilnærmet friksjonsfri. Ved å endre avstanden mellom de to rullene 28) og 29) kan man enkelt endre forholdet mellom stempelets forskyvning og den resulterende forskyvning av manøverstangen. Figures 2A and 2B show an enlarged view of the transmission mechanism 13) in two positions. This transmission mechanism comprises a fastening plate 32) which on one side has attachment to a shaft 26) which cooperates with one end of a rotatable first arm 27) , and which on the opposite side has attachment to a shaft 30) which cooperates with one end of the end of a rotatable second arm 31). On the other end of the arm 31) there is arranged a first roller 28) which cooperates with the other end of the arm 27) which in its middle part is in contact with the maneuvering rod 7). This mechanism means that the transfer of power from the piston 15) to the operating rod is almost friction-free. By changing the distance between the two rollers 28) and 29), one can easily change the relationship between the displacement of the piston and the resulting displacement of the operating rod.
Dette forholdet kan typisk velges å være rundt 4:1. This ratio can typically be chosen to be around 4:1.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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NO20220105A NO20220105A1 (en) | 2022-01-21 | 2022-01-21 | Flow stabilizing gas regulator |
PCT/NO2023/050015 WO2023140742A1 (en) | 2022-01-21 | 2023-01-23 | Flow stabilizing gas regulator |
Applications Claiming Priority (1)
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NO20220105A NO20220105A1 (en) | 2022-01-21 | 2022-01-21 | Flow stabilizing gas regulator |
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NO20220105A1 true NO20220105A1 (en) | 2023-07-24 |
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NO20220105A NO20220105A1 (en) | 2022-01-21 | 2022-01-21 | Flow stabilizing gas regulator |
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WO (1) | WO2023140742A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183932A (en) * | 1961-07-13 | 1965-05-18 | Pneumo Dynamics Corp | Regulator valve |
US9870007B2 (en) * | 2012-05-24 | 2018-01-16 | Air Products And Chemicals, Inc. | Method of, and apparatus for, providing a gas mixture |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4031917A (en) * | 1974-04-08 | 1977-06-28 | John Charles R De | Constant flow gas regulator |
US5520214A (en) * | 1994-09-12 | 1996-05-28 | Western/Scott Fetzer Company | Regulator and fill valve |
JP4506496B2 (en) * | 2004-11-12 | 2010-07-21 | 株式会社ジェイテクト | Pressure reducing valve |
LU92963B1 (en) * | 2016-01-28 | 2017-08-07 | Luxembourg Patent Co | Pressure reducer device with stepper motor for adjusting the flow rate |
-
2022
- 2022-01-21 NO NO20220105A patent/NO20220105A1/en unknown
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2023
- 2023-01-23 WO PCT/NO2023/050015 patent/WO2023140742A1/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183932A (en) * | 1961-07-13 | 1965-05-18 | Pneumo Dynamics Corp | Regulator valve |
US9870007B2 (en) * | 2012-05-24 | 2018-01-16 | Air Products And Chemicals, Inc. | Method of, and apparatus for, providing a gas mixture |
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