EP0388332A1 - Device for pressurised injection of large quantities of gas into a closed receptacle and recovery of the gas - Google Patents

Device for pressurised injection of large quantities of gas into a closed receptacle and recovery of the gas Download PDF

Info

Publication number
EP0388332A1
EP0388332A1 EP90420135A EP90420135A EP0388332A1 EP 0388332 A1 EP0388332 A1 EP 0388332A1 EP 90420135 A EP90420135 A EP 90420135A EP 90420135 A EP90420135 A EP 90420135A EP 0388332 A1 EP0388332 A1 EP 0388332A1
Authority
EP
European Patent Office
Prior art keywords
valve
gas
pipe
treatment
deformable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90420135A
Other languages
German (de)
French (fr)
Inventor
Laurent Pelissier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Etudes et Constructions Mecaniques SA
Original Assignee
Etudes et Constructions Mecaniques SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etudes et Constructions Mecaniques SA filed Critical Etudes et Constructions Mecaniques SA
Publication of EP0388332A1 publication Critical patent/EP0388332A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/068—Special properties of materials for vessel walls
    • F17C2203/0685—Special properties of materials for vessel walls flexible
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0176—Details of mounting arrangements with ventilation
    • 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
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F17C2221/017—Helium
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0114—Propulsion of the fluid with vacuum injectors, e.g. venturi
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86187—Plural tanks or compartments connected for serial flow

Definitions

  • Certain heat treatments are carried out by placing the parts to be treated in an enclosure and by injecting gas into this enclosure.
  • quenching operations are carried out by introducing nitrogen under overpressure and then by expelling this gas in the open air at the end of each cycle.
  • the present invention provides a device making it possible to fill a treatment enclosure with a pressurized gas, to evacuate the gas present in the treatment enclosure and to store it, comprising a gas storage tank, composed of a rigid reservoir and a deformable reservoir disposed inside the rigid reservoir; a first pipe connecting the deformable reservoir to the treatment enclosure, the first pipe comprising a first valve; a second pipe connecting the deformable tank to the treatment enclosure, the second pipe comprising a pumping means for pumping the gas from the treatment enclosure to the deformable tank; pressurized air supply means for filling pressurized air with the space between the deformable tank and the rigid tank; and a second valve allowing venting of the space located between the deformable tank and the rigid tank.
  • the filling of the treatment chamber is obtained by introducing pressurized air into the space between the deformable tank and the rigid tank, then by opening the first valve.
  • the treatment enclosure is emptied by opening the first and second valves, then closing the first valve and discharging, using the pumping means, to the deformable reservoir the residual gas present in the containment treatment.
  • the treatment enclosure 1 is a rigid waterproof enclosure which can open so as to allow the introduction of parts to be treated, and then close to effect the processing operation.
  • the treatment enclosure 1 is a rigid waterproof enclosure which can open so as to allow the introduction of parts to be treated, and then close to effect the processing operation.
  • one begins by carrying out the vacuum in the treatment enclosure 1, then one injects into this enclosure, as quickly as possible, treatment gas which is brought to a certain pressure which can be relatively high.
  • the storage tank 2 consists of a rigid tank 3 and a deformable tank 4 disposed inside the rigid tank.
  • the deformable reservoir 4 constitutes a sealed enclosure with variable volume which is, for example, delimited by a flexible wall made of a deformable material, of the elastomer type, or else by a structure with telescopic bellows.
  • this deformable tank 4 will be called a balloon.
  • a first pipe 5 provided with a piloted valve 6 connects the interior of the balloon 4 to the interior of the treatment enclosure 1.
  • a piloted valve 10 is interposed in the pipe 8.
  • a second pipe 11 connects the balloon 4 to the treatment chamber 1 and comprises a pumping means 12 intended to pump the gas from the treatment chamber 1 to the balloon 4.
  • a valve 13 allows space 7 to be vented to the open air.
  • the filling of the treatment enclosure 1 is obtained by introducing air under pressure, using the pressurized air supply means 9, in the space 7 located between the rigid tank 3 and the balloon 4, then by opening the first valve 6; and the emptying of the treatment chamber 1 is obtained, firstly, by opening the valves 6 and 13, then by closing the valve 6 and by evacuating towards the bladder 4 the residual gas present in the treatment chamber 1 , using the pumping means 12.
  • the pressurized gas present in the enclosure 1 passes alone into the bladder 4 until its pressure in the milking enclosure ment 1 again becomes close to atmospheric pressure. If, initially, the gas present in the treatment enclosure 1 was at a pressure of 5 105 Pa, it is understood that most of the gas is thus evacuated automatically in the bladder 4, without requiring pumping means. To finish evacuating the gas from the treatment enclosure 1, that is to say to effect the vacuum in this enclosure, it then suffices to close the valve 6 and to start the pumping means 12.
  • the pumping means 12 is in fact made up of a vacuum pump, the pumping rate of which need not be very large, since most of the gas has been transferred beforehand.
  • the device according to the invention further comprises a means for initially bringing the gas into the bladder 4, this means (not shown) bringing this gas through a pipe 15 and a valve 16 in the pipe 5 located between the bladder 4 and the valve 6.
  • a valve 19 and a valve 20 In the pipe 11, upstream and downstream of the pump 12, are arranged respectively a valve 19 and a valve 20
  • the initial quantity of helium contained in the balloon 4 can be reconstituted by additions using the valve 16.

Abstract

The present invention relates to a device enabling a treatment receptacle (1) to be filled with a pressurized gas, and the gas present in the treatment receptacle to be removed and stored. This device comprises; a storage reservoir (2) for the gas, composed of a rigid reservoir (3) and a deformable reservoir (4); a pipe (5) with a valve (6) connecting the reservoir (4) to the receptacle (1); a pipe (11) connecting the reservoir (4) to the treatment receptacle, the second pipe comprising a pumping means (12); a means (9) for supplying pressurised air in order to fill the space (7) situated between the rigid and deformable reservoirs with pressurised air; and a second valve (13) enabling the space (7) to be connected to the open air. <IMAGE>

Description

La présente invention concerne un dispositif permettant de remplir de gaz et de vider une enceinte de traitement. L'invention concerne plus précisément un dispositif permettant de remplir une enceinte de traitement avec un gaz sous pression, d'évacuer le gaz présent dans l'enceinte de traitement et de le stocker afin de la réintroduire dans l'enceinte de traitement au cours du cycle suivant.The present invention relates to a device for filling with gas and emptying a treatment enclosure. The invention relates more precisely to a device making it possible to fill a treatment enclosure with a gas under pressure, to evacuate the gas present in the treatment enclosure and to store it in order to reintroduce it into the treatment enclosure during the next cycle.

Certains traitements thermiques sont réalisés en dispo­sant des pièces à traiter dans une enceinte et en injectant du gaz dans cette enceinte. Par exemple, on effectue des opérations de trempe en introduisant de l'azote en surpression puis en expulsant ce gaz à l'air libre à la fin de chaque cycle.Certain heat treatments are carried out by placing the parts to be treated in an enclosure and by injecting gas into this enclosure. For example, quenching operations are carried out by introducing nitrogen under overpressure and then by expelling this gas in the open air at the end of each cycle.

Dans certaines opérations de trempe, on est amené à utiliser des gaz plus précieux tels que l'hélium qui permet d'obtenir des vitesses de refroidissement supérieures à celles obtenues avec l'azote. Dans ce cas, mais aussi dans beaucoup d'autres cas de traitement de pièces utilisant un gaz présent dans une enceinte de traitement, on est amené à récupérer le gaz extrait de l'enceinte de traitement, pour le réutiliser lors du cycle de traitement suivant. On récupère le gaz de traitement par mesure d'économie si la production de ce gaz est onéreuse, ou par mesure de sécurité si ce gaz est toxique ou dangereux.In certain quenching operations, it is necessary to use more precious gases such as helium which makes it possible to obtain cooling rates greater than those obtained with nitrogen. In this case, but also in many other cases of treatment of parts using a gas present in a treatment chamber, it is necessary to recover the gas extracted from the treatment chamber, to reuse it during the following treatment cycle. . The process gas is recovered as a cost-saving measure if the production of this gas is expensive, or as a safety measure if this gas is toxic or dangerous.

Lorsque l'on doit injecter dans une enceinte de traite­ment du gaz sous une pression relativement élevée, on est amené à utiliser un moyen de pompage relativement important afin de pomper le gaz depuis un réservoir de stockage vers l'enceinte de traitement, puis d'utiliser ce même moyen de pompage ou un autre moyen de pompage important afin de pomper ensuite le gaz depuis l'enceinte de traitement vers le réservoir de stockage.When a gas treatment chamber has to be injected under a relatively high pressure, it is necessary to use a relatively large pumping means in order to pump the gas from a storage tank to the treatment chamber, then to use this same pumping means or another important pumping means in order to then pump the gas from the treatment enclosure to the storage tank.

Dans certaines applications, il est souhaitable que le temps de remplissage de l'enceinte de traitement ainsi que le temps nécessaire à sa vidange soient relativement courts. Dans ce cas, le ou les moyens de pompage utilisés (des compresseurs) doi­vent pouvoir transférer de très gros débits de gaz et les amener à une pression relativement élevée. Par ailleurs, les gaz utili­sés peuvent être d'une nature telle que leur pompage présente certains difficultés, par exemple si ces gaz sont corrosifs.In certain applications, it is desirable that the filling time of the treatment enclosure as well as the time necessary for its emptying are relatively short. In this case, the pumping means or means used (compressors) must be able to transfer very large gas flow rates and bring them to a relatively high pressure. Furthermore, the gases used can be of such a nature that their pumping presents certain difficulties, for example if these gases are corrosive.

La présente invention concerne donc un dispositif permettant de transférer du gaz entre un réservoir de stockage et une enceinte de traitement, ce dispositif utilisant, à titre auxiliaire seulement, un moyen de pompage de gaz qui ne nécessite qu'une capacité de pompage relativement faible.The present invention therefore relates to a device for transferring gas between a storage tank and a processing enclosure, this device using, as an auxiliary only, a gas pumping means which requires only a relatively low pumping capacity.

Plus particulièrement, la présente invention prévoit un dispositif permettant de remplir une enceinte de traitement avec un gaz sous pression, d'évacuer le gaz présent dans l'enceinte de traitement et de le stocker, comprenant un réservoir de stockage du gaz, composé d'un réservoir rigide et d'un réservoir déforma­ble disposé à l'intérieur du réservoir rigide ; une première canalisation reliant le réservoir déformable à l'enceinte de traitement, la première canalisation comprenant une première vanne ; une deuxième canalisation reliant le réservoir déformable à l'enceinte de traitement, la deuxième canalisation comprenant un moyen de pompage pour pomper le gaz depuis l'enceinte de traitement vers le réservoir déformable ; un moyen d'amenée d'air sous pression pour remplir d'air sous pression l'espace situé entre le réservoir déformable et le réservoir rigide ; et une deuxième vanne permettant une mise à l'air libre de l'espace situé entre le réservoir déformable et le réservoir rigide. Le remplissage de l'enceinte de traitement est obtenu en intro­duisant de l'air sous pression dans l'espace situé entre le réservoir déformable et le réservoir rigide, puis en ouvrant la première vanne. Le vidage de l'enceinte de traitement est obtenu en ouvrant les première et deuxième vannes, puis en fermant la première vanne et en évacuant, à l'aide du moyen de pompage, vers le réservoir déformable le gaz résiduel présent dans l'enceinte de traitement.More particularly, the present invention provides a device making it possible to fill a treatment enclosure with a pressurized gas, to evacuate the gas present in the treatment enclosure and to store it, comprising a gas storage tank, composed of a rigid reservoir and a deformable reservoir disposed inside the rigid reservoir; a first pipe connecting the deformable reservoir to the treatment enclosure, the first pipe comprising a first valve; a second pipe connecting the deformable tank to the treatment enclosure, the second pipe comprising a pumping means for pumping the gas from the treatment enclosure to the deformable tank; pressurized air supply means for filling pressurized air with the space between the deformable tank and the rigid tank; and a second valve allowing venting of the space located between the deformable tank and the rigid tank. The filling of the treatment chamber is obtained by introducing pressurized air into the space between the deformable tank and the rigid tank, then by opening the first valve. The treatment enclosure is emptied by opening the first and second valves, then closing the first valve and discharging, using the pumping means, to the deformable reservoir the residual gas present in the containment treatment.

Ces objets, caractéristiques et avantages, ainsi que d'autres de la présente invention seront exposés plus en détail dans la description suivante d'un mode de réalisation particu­lier, faite en relation avec la figure unique jointe qui repré­sente très schématiquement un dispositif selon la présente invention.These objects, characteristics and advantages, as well as others of the present invention will be explained in more detail in the following description of a particular embodiment, made in relation to the single attached figure which very schematically represents a device according to the present invention.

Dans cette figure, on distingue une enceinte de traite­ment 1 et un réservoir de stockage 2. L'enceinte de traitement 1 est une enceinte rigide étanche pouvant s'ouvrir de façon à permettre l'introduction de pièces à traiter, puis se refermer pour effectuer l'opération de traitement. Généralement, on commence par effectuer le vide dans l'enceinte de traitement 1, puis on injecte dans cet enceinte, le plus rapidement possible, du gaz de traitement que l'on amène à une certaine pression pou­vant être relativement élevée. Dans le cas d'une trempe, on peut être amené à introduire dans l'enceinte de traitement 1 de l'hélium, par exemple sous 5 10⁵ Pa.In this figure, there is a treatment enclosure 1 and a storage tank 2. The treatment enclosure 1 is a rigid waterproof enclosure which can open so as to allow the introduction of parts to be treated, and then close to effect the processing operation. Generally, one begins by carrying out the vacuum in the treatment enclosure 1, then one injects into this enclosure, as quickly as possible, treatment gas which is brought to a certain pressure which can be relatively high. In the case of quenching, it may be necessary to introduce helium into the treatment enclosure 1, for example under 5 10⁵ Pa.

Le réservoir de stockage 2 est constitué d'un réservoir rigide 3 et d'un réservoir déformable 4 disposé à l'intérieur du réservoir rigide. Le réservoir déformable 4 constitue une en­ceinte étanche à volume variable qui est, par exemple, délimitée par une paroi souple réalisée en un matériau déformable, du genre élastomère, ou bien par une structure à soufflets télescopiques. Ci-après, ce réservoir déformable 4 sera appelé une baudruche.The storage tank 2 consists of a rigid tank 3 and a deformable tank 4 disposed inside the rigid tank. The deformable reservoir 4 constitutes a sealed enclosure with variable volume which is, for example, delimited by a flexible wall made of a deformable material, of the elastomer type, or else by a structure with telescopic bellows. Hereinafter, this deformable tank 4 will be called a balloon.

Une première canalisation 5 munie d'une vanne pilotée 6 relie l'intérieur de la baudruche 4 à l'intérieur de l'enceinte de traitement 1.A first pipe 5 provided with a piloted valve 6 connects the interior of the balloon 4 to the interior of the treatment enclosure 1.

L'espace 7 situé entre le réservoir rigide 3 et la bau­druche 4 communique par une canalisation 8 avec un moyen d'amenée d'air sous pression 9. Dans la canalisation 8, est interposée une vanne pilotée 10.The space 7 located between the rigid tank 3 and the balloon 4 communicates by a pipe 8 with a means for supplying air under pressure 9. In the pipe 8, a piloted valve 10 is interposed.

Une deuxième canalisation 11 relie la baudruche 4 à l'enceinte de traitement 1 et comprend un moyen de pompage 12 destiné à pomper le gaz depuis l'enceinte de traitement 1 vers la baudruche 4.A second pipe 11 connects the balloon 4 to the treatment chamber 1 and comprises a pumping means 12 intended to pump the gas from the treatment chamber 1 to the balloon 4.

Une vanne 13 permet une mise à l'air libre de l'espace 7.A valve 13 allows space 7 to be vented to the open air.

En se limitant aux éléments qui viennent d'être dé­crits, on peut expliquer, de façon générale, le fonctionnement du dispositif de la manière suivante : le remplissage de l'enceinte de traitement 1 s'obtient en introduisant de l'air sous pression, à l'aide du moyen d'amenée d'air sous pression 9, dans l'espace 7 situé entre le réservoir rigide 3 et la baudruche 4, puis en ouvrant la première vanne 6 ; et le vidage de l'enceinte de trai­tement 1 est obtenu, dans un premier temps, en ouvrant les vannes 6 et 13, puis en fermant la vanne 6 et en évacuant vers la bau­druche 4 le gaz résiduel présent dans l'enceinte de traitement 1, à l'aide du moyen de pompage 12.By limiting oneself to the elements which have just been described, one can explain, in a general way, the operation of the device in the following way: the filling of the treatment enclosure 1 is obtained by introducing air under pressure, using the pressurized air supply means 9, in the space 7 located between the rigid tank 3 and the balloon 4, then by opening the first valve 6; and the emptying of the treatment chamber 1 is obtained, firstly, by opening the valves 6 and 13, then by closing the valve 6 and by evacuating towards the bladder 4 the residual gas present in the treatment chamber 1 , using the pumping means 12.

Pour injecter, par exemple, du gaz dans l'enceinte de traitement 1 à une pression de 5 10⁵ Pa, on voit qu'il suffit de brancher sur la canalisation 8 un moyen d'amenée d'air sous pres­sion, par exemple en provenance d'un réseau d'air comprimé, à une pression supérieure à 5 10⁵ Pa déterminée en fonction des volumes relatifs du réservoir 2 et de l'enceinte 1, et d'ouvrir la vanne 6. Le transfert du gaz depuis la baudruche 4 vers l'enceinte de traitement 1 s'effectue alors de façon naturelle et rapide, sans utiliser de moyen de pompage.To inject, for example, gas into the treatment enclosure 1 at a pressure of 5 10⁵ Pa, we see that it suffices to connect to the pipe 8 a means of supplying pressurized air, for example from of a compressed air network, at a pressure greater than 5 10⁵ Pa determined as a function of the relative volumes of the reservoir 2 and of the enclosure 1, and of opening the valve 6. The transfer of the gas from the bladder 4 to the treatment enclosure 1 then takes place naturally and quickly, without using any pumping means.

Pour vider l'enceinte de traitement 1, il suffit de mettre à l'air libre l'espace 7, en ouvrant la vanne 13, et d'ouvrir la vanne 6. Dans ces conditions, le gaz sous pression présent dans l'enceinte de traitement 1 passe tout seul dans la baudruche 4 jusqu'à ce que sa pression dans l'enceinte de traite­ ment 1 redevienne voisine de la pression atmosphérique. Si, ini­tialement, le gaz présent dans l'enceinte de traitement 1 était à une pression de 5 10⁵ Pa, on comprend que la plus grande partie du gaz est ainsi évacué automatiquement dans la baudruche 4, sans nécessiter de moyens de pompage. Pour finir d'évacuer le gaz de l'enceinte de traitement 1, c'est-à-dire pour effectuer le vide dans cette enceinte, il suffit alors de fermer la vanne 6 et de mettre en marche le moyen de pompage 12. Le moyen de pompage 12 est en fait constitué d'une pompe à vide dont le débit de pompage n'a pas besoin d'être très important, puisque la plus grande partie du gaz a été préalablement transférée.To empty the treatment enclosure 1, it is sufficient to vent the space 7, by opening the valve 13, and to open the valve 6. Under these conditions, the pressurized gas present in the enclosure 1 passes alone into the bladder 4 until its pressure in the milking enclosure ment 1 again becomes close to atmospheric pressure. If, initially, the gas present in the treatment enclosure 1 was at a pressure of 5 10⁵ Pa, it is understood that most of the gas is thus evacuated automatically in the bladder 4, without requiring pumping means. To finish evacuating the gas from the treatment enclosure 1, that is to say to effect the vacuum in this enclosure, it then suffices to close the valve 6 and to start the pumping means 12. The pumping means 12 is in fact made up of a vacuum pump, the pumping rate of which need not be very large, since most of the gas has been transferred beforehand.

Le dispositif selon l'invention comprend en outre un moyen pour amener initialement le gaz dans la baudruche 4, ce moyen (non représenté) amenant ce gaz par une canalisation 15 et une vanne 16 dans la canalisation 5 située entre la baudruche 4 et la vanne 6. Il est prévu en outre une canalisation de faible diamètre 17 en dérivation de la vanne 6, comprenant une vanne 18. Dans la canalisation 11, en amont et en aval de la pompe 12, sont disposées respectivement une vanne 19 et une vanne 20. Il est prévu également une évacuation 22 dans la canalisation 11, en sortie de la pompe 12, pouvant être fermée par une vanne 23.The device according to the invention further comprises a means for initially bringing the gas into the bladder 4, this means (not shown) bringing this gas through a pipe 15 and a valve 16 in the pipe 5 located between the bladder 4 and the valve 6. There is further provided a small diameter pipe 17 bypassing the valve 6, comprising a valve 18. In the pipe 11, upstream and downstream of the pump 12, are arranged respectively a valve 19 and a valve 20 There is also an outlet 22 in the pipe 11, at the outlet of the pump 12, which can be closed by a valve 23.

En considérant maintenant l'intégralité des éléments qui viennent d'être décrits, on peut expliciter le fonctionnement de l'ensemble du dispositif de la manière suivante :

  • 1°) on commence par fermer les vannes 10, 16, 18 et 20 et ouvrir les vannes 6, 13, 19, et 23. On vide la baudruche 4 et l'enceinte de traitement 1 à l'aide de la pompe à vide 12.
  • 2°) on ouvre la vanne 16 et on ferme la vanne 6, afin de remplir la baudruche 4 de gaz à une pression légèrement supé­rieure à la pression atmosphérique, la baudruche 4 occupant alors l'espace du réservoir rigide 3.
  • 3°) on ferme les vannes 13, 16, 19, et 23 et on ouvre la vanne 10, puis, à l'aide d'un compresseur ou d'un réservoir de gaz ou d'air comprimé 9, ou à partir d'un réseau extérieur d'air comprimé, on envoie de l'air sous pression dans l'espace 7 pour comprimer la baudruche 4 pour amener le gaz contenu dans la baudruche à une pression suffisamment supérieure à celle que l'on souhaite obtenir dans l'enceinte de traitement 1. La différence de pression à appliquer détermine la vitesse de remplissage de l'enceinte 1, de sorte qu'en fin de vidange de la baudruche 4 dans l'enceinte 1, par ouverture de la vanne 6, la pression dans le réservoir 3 soit au moins égale à la pression désirée dans l'enceinte 1. On pourra d'ailleurs déterminer en fin de remplis­sage, une pression dans le réservoir 3 supérieure à celle que l'on veut obtenir dans l'enceiente 1 et prévoir une réserve de gaz dans la baudruche 4 ; le remplissage de l'enceinte 1 est alors interrompu à la pression requise par la fermeture de la vanne 6. Dans ce cas, des appoints de gaz en cours d'utilisation peuvent être réalisés en fermant la vanne 6 et en ouvrant la vanne 18 laissant passer du gaz dans la canalisation 17 de faible diamè­tre, la vanne 18 étant commandée par un moyen de mesure de pression.
  • 4)° Les vannes 6, 10 et 18 étant fermées, on peut effectuer le traitement dans l'enceinte de traitement 1.
  • 5°) Lorsque le traitement est terminé, pour vider l'enceinte de traitement 1, on ouvre la vanne 13 de mise à l'air libre, puis la vanne 6. Le gaz qui est à une pression supérieure à la pression atmosphérique retourne dans la baudruche 4 et revient à une pression voisine de la pression atmosphérique.
  • 6°) On ferme ensuite la vanne 6 et on ouvre les vannes 19 et 20 puis on finit de vider l'enceinte de traitement 1 dans la baudruche 4 à l'aide de la pompe à vide 12.
  • 7°) Lorsque ce cycle est terminé, on ferme les vannes 13, 19, et 20 et l'on est ainsi prêt à effectuer un nouveau cycle tel que décrit à partir du paragraphe 3°).
Now considering all of the elements which have just been described, the operation of the entire device can be explained in the following manner:
  • 1 °) we start by closing the valves 10, 16, 18 and 20 and open the valves 6, 13, 19, and 23. We empty the balloon 4 and the treatment chamber 1 using the vacuum pump 12.
  • 2) the valve 16 is opened and the valve 6 is closed, in order to fill the bladder 4 with gas at a pressure slightly higher than atmospheric pressure, the bladder 4 then occupying the space of the rigid tank 3.
  • 3) the valves 13, 16, 19, and 23 are closed and the valve 10 is opened, then, using a compressor or a gas or compressed air tank 9, or from '' an external compressed air network, pressurized air is sent into space 7 to compress the bladder 4 to bring the gas contained in the bladder to a pressure sufficiently higher than that which one wishes to obtain in the treatment chamber 1. The pressure difference to be applied determines the filling speed of the chamber 1, so that at the end of the emptying of the bladder 4 in the enclosure 1, by opening the valve 6, the pressure in the tank 3 is at least equal to the desired pressure in the enclosure 1. We can moreover determine at the end of filling, a pressure in the reservoir 3 greater than that which one wishes to obtain in the enclosure 1 and provide a reserve of gas in the bladder 4; the filling of the enclosure 1 is then interrupted at the pressure required by the closure of the valve 6. In this case, additional gas during use can be produced by closing the valve 6 and by opening the valve 18 leaving pass gas through the small diameter pipe 17, the valve 18 being controlled by a pressure measurement means.
  • 4) ° The valves 6, 10 and 18 being closed, the treatment can be carried out in the treatment enclosure 1.
  • 5 °) When the treatment is finished, to empty the treatment enclosure 1, the valve 13 for venting is opened, then the valve 6. The gas which is at a pressure higher than atmospheric pressure returns to the balloon 4 and returns to a pressure close to atmospheric pressure.
  • 6 °) The valve 6 is then closed and the valves 19 and 20 are opened, then the treatment chamber 1 is emptied into the balloon 4 using the vacuum pump 12.
  • 7 °) When this cycle is finished, the valves 13, 19 and 20 are closed and one is thus ready to carry out a new cycle as described from paragraph 3).

A tout moment, la quantité initiale d'hélium contenue dans la baudruche 4 peut être reconstituée par des appoints à l'aide de la vanne 16.At any time, the initial quantity of helium contained in the balloon 4 can be reconstituted by additions using the valve 16.

Claims (4)

1. Dispositif permettant de remplir une enceinte de traitement (1) avec un gaz sous pression, d'évacuer le gaz présent dans l'enceinte de traitement et de le stocker, caracté­risé en ce qu'il comprend :
- un réservoir de stockage (2) du gaz, composé d'un réservoir rigide (3) et d'un réservoir déformable (4) disposé à l'intérieur du réservoir rigide ;
- une première canalisation (5) reliant le réservoir déformable (4) à l'enceinte de traitement, la première canalisa­tion comprenant une première vanne (6) ;
- une deuxième canalisation (11) reliant le réservoir déformable à l'enceinte de traitement, la deuxième canalisation comprenant un moyen de pompage (12) pour pomper le gaz depuis l'enceinte de traitement vers le réservoir déformable ;
- un moyen d'amenée d'air sous pression (9) pour remplir d'air sous pression l'espace (7) situé entre le réservoir déformable (4) et le réservoir rigide (3) ; et
- une deuxième vanne (13) permettant une mise à l'air libre dudit espace (7);
le remplissage de l'enceinte de traitement (1) étant obtenu en introduisant de l'air sous pression dans ledit espace (7), puis en ouvrant la première vanne (6) ; et le vidage de l'enceinte de traitement étant obtenu en ouvrant les première et deuxième vannes, puis en fermant la première vanne (6) et en évacuant, à l'aide du moyen de pompage (12), vers le réservoir déformable (4) le gaz résiduel présent dans l'enceinte de traitement (1).1. Device making it possible to fill a treatment enclosure (1) with a gas under pressure, to evacuate the gas present in the treatment enclosure and to store it, characterized in that it comprises:
- a gas storage tank (2), composed of a rigid tank (3) and a deformable tank (4) disposed inside the rigid tank;
- a first pipe (5) connecting the deformable reservoir (4) to the treatment enclosure, the first pipe comprising a first valve (6);
- a second pipe (11) connecting the deformable tank to the treatment enclosure, the second pipe comprising a pumping means (12) for pumping gas from the treatment enclosure to the deformable tank;
- a means for supplying pressurized air (9) for filling the pressurized air with the space (7) located between the deformable tank (4) and the rigid tank (3); and
- a second valve (13) allowing venting of said space (7);
the filling of the treatment chamber (1) being obtained by introducing pressurized air into said space (7), then by opening the first valve (6); and the emptying of the treatment chamber being obtained by opening the first and second valves, then closing the first valve (6) and evacuating, using the pumping means (12), to the deformable reservoir (4 ) the residual gas present in the treatment enclosure (1). 2. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend en outre une troisième vanne (19) disposée dans la deuxième canalisation (11), en aval du moyen de pompage (12) et une quatrième vanne (20) disposée dans la deuxième canalisa­tion en amont du moyen de pompage (12) et un conduit d'évacuation à l'air libre (22) disposé sur la deuxième canalisation en amont du moyen de pompage (12) et en aval de la quatrième vanne (20), muni d'une cinquième vanne (23), permettant ainsi de faire le vide dans le réservoir déformable (4) et l'enceinte de traitement (1) à l'aide du moyen de pompage (12), en ouvrant la première vanne (6), la troisième vanne (19) et la cinquième vanne (23) et en fermant la quatrième vanne (20).2. Device according to claim 1, characterized in that it further comprises a third valve (19) disposed in the second pipe (11), downstream of the pumping means (12) and a fourth valve (20) disposed in the second pipe upstream of the pumping means (12) and an open air discharge pipe (22) disposed on the second pipe upstream of the pumping means (12) and downstream of the fourth valve (20) , provided with a fifth valve (23), thus making it possible to create a vacuum in the deformable reservoir (4) and the treatment enclosure (1) using the pumping means (12), by opening the first valve (6), the third valve (19) and the fifth valve (23) and by closing the fourth valve (20). 3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'il comprend en outre un moyen pour fournir le gaz dans le réservoir déformable (4), en amenant ce gaz par une troisième canalisation (15) comprenant une sixième vanne (16) débouchant dans la première canalisation (5), entre le réservoir déformable (4) et la première vanne (6).3. Device according to one of claims 1 or 2, characterized in that it further comprises a means for supplying the gas into the deformable reservoir (4), by bringing this gas through a third pipe (15) comprising a sixth valve (16) opening into the first pipe (5), between the deformable reservoir (4) and the first valve (6). 4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il comprend en outre un moyen de mesure de la pression dans l'enceinte de traitement (1), une quatrième canalisation (17) à faible débit, en dérivation de la première vanne (6), et comprenant une septième vanne (18) comman­dée par le moyen de mesure de pression, de sorte que, lorsque la première vanne (6) est fermée, pendant l'opération de traitement s'effectuant dans l'enceinte de traitement (1), le moyen de mesure de pression commande l'ouverture de la septième vanne (18) si la pression régnant dans l'enceinte de traitement (1) est inférieure à une pression prédéterminée et commande la fermeture de la septième vanne (18) dans le cas contraire.4. Device according to any one of claims 1 to 3, characterized in that it further comprises a means for measuring the pressure in the treatment enclosure (1), a fourth pipe (17) at low flow rate, bypassing the first valve (6), and comprising a seventh valve (18) controlled by the pressure measuring means, so that, when the first valve (6) is closed, during the processing operation taking place in the treatment chamber (1), the pressure measuring means controls the opening of the seventh valve (18) if the pressure prevailing in the treatment chamber (1) is less than a predetermined pressure and controls the closing of the seventh valve (18) otherwise.
EP90420135A 1989-03-17 1990-03-13 Device for pressurised injection of large quantities of gas into a closed receptacle and recovery of the gas Withdrawn EP0388332A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903795A FR2644557A1 (en) 1989-03-17 1989-03-17 DEVICE FOR THE INJECTION OF PRESSURIZED GASES AND HIGH FLOW RATES IN A SEALED HOUSING WITH GAS RECOVERY
FR8903795 1989-03-17

Publications (1)

Publication Number Publication Date
EP0388332A1 true EP0388332A1 (en) 1990-09-19

Family

ID=9379975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420135A Withdrawn EP0388332A1 (en) 1989-03-17 1990-03-13 Device for pressurised injection of large quantities of gas into a closed receptacle and recovery of the gas

Country Status (6)

Country Link
US (1) US5018551A (en)
EP (1) EP0388332A1 (en)
JP (1) JP2982074B2 (en)
KR (1) KR900014606A (en)
CA (1) CA2012269A1 (en)
FR (1) FR2644557A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756036A1 (en) * 1996-11-20 1998-05-22 Dehon Sa Anciens Etablissement PROCESS FOR RE-PROOFING A PACKAGING FILLED WITH AN ACTIVE FLUID AND A PROPELLER AND APPARATUS FOR IMPLEMENTING THE PROCESS
FR2835907A1 (en) * 2002-02-12 2003-08-15 Air Liquide GAS QUENCHING PLANT AND CORRESPONDING QUENCHING METHOD
FR2858983A1 (en) * 2003-08-21 2005-02-25 Air Liquide Method of quenching in gas where the gas is recycled by passage through a compression/supression group to a balancing capacity feeding the quenching cell
CN102658938A (en) * 2012-05-18 2012-09-12 昆山市恒安工业气体有限公司 Intelligent waste gas recovery device for tank truck
CN102661481A (en) * 2012-05-04 2012-09-12 昆山市恒安工业气体有限公司 Waste gas recovery unit for tank car
CN104534275A (en) * 2015-01-19 2015-04-22 西南交通大学 Special cabinet of helium gas recycling device
CN108980600A (en) * 2018-07-27 2018-12-11 清华大学 A kind of underground constant-pressure gas storage device
CN111365608A (en) * 2020-04-23 2020-07-03 蓝箭航天空间科技股份有限公司 Method for filling and recovering high-pressure gas

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368067A (en) * 1993-03-23 1994-11-29 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Gas storage and recovery system
DE4326888C2 (en) * 1993-08-11 1996-05-15 Hoechst Ag Restraint system and method for preventing substances from escaping into the environment
FR2725438A1 (en) * 1994-10-11 1996-04-12 Aerospatiale HYDRAULIC EQUIPMENT DRAIN Bench
US5803137A (en) * 1995-07-24 1998-09-08 Beldex Corporation Liquid crystal delivering apparatus
US6079459A (en) * 1998-02-11 2000-06-27 Welding Company Of America Controller for tank-filling system
US6152192A (en) * 1998-02-11 2000-11-28 Welding Company Of America Controller for system for filling gas cylinders with single gas or gas mixture
DE19916385C2 (en) * 1999-03-31 2001-02-08 Mannesmann Ag Vehicle with compressed gas tank as a vehicle tank
FR2807423B1 (en) * 2000-04-05 2002-10-31 Eastman Kodak Co INSTALLATION FOR TREATING WASHING WATER PROVIDED WITH AN INDEPENDENT RECYCLING DEVICE.
WO2002031253A2 (en) * 2000-10-13 2002-04-18 Micell Technologies, Inc. Device and process for dry-cleaning process using carbon dioxide and a divided pressure vessel
DE10113725A1 (en) * 2001-03-21 2002-09-26 Linde Ag Gas storage container, for helium under pressure for quenching systems, has an inner flexible container of a gas-permeable material within an outer container filled with an inert gas
KR20020046237A (en) * 2002-04-04 2002-06-20 최수혜 The method & equipment for recycling butane from scraped car.
JP2004036169A (en) * 2002-07-02 2004-02-05 Komatsu Ltd Working vehicle
EP1650270A4 (en) * 2003-07-23 2006-08-16 Toagosei Co Ltd Aqueous ink
ES2893101T3 (en) 2015-11-25 2022-02-08 Isocurrent Energy Incorporated Variable pressure vessel
CN113137567B (en) * 2020-01-16 2022-07-19 蔡孟学 Residual gas recovery method for high-purity inorganic compound dichlorosilane subpackaging storage container
CN113137563B (en) * 2020-01-16 2022-07-19 蔡孟学 Filling method of high-purity inorganic compound dichlorosilane subpackaging storage container
CN112984372A (en) * 2021-02-07 2021-06-18 中国空气动力研究与发展中心超高速空气动力研究所 Diaphragm type wind tunnel special gas inflation method utilizing compressed air power

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB868246A (en) * 1958-05-29 1961-05-17 Degussa Process for accelerating the cooling of materials treated in vacuum furnaces
CH425852A (en) * 1964-06-19 1966-12-15 Max Planck Gesellschaft Helium recovery device
NL8205061A (en) * 1981-12-30 1983-07-18 Siemerink Bv Rigid holder, e.g. for fermentation gas - having flexible partition sepg. gas space from space connected to air compressor
FR2634866A1 (en) * 1988-07-26 1990-02-02 Thierry Dimier Traitements The Method and device for recovering a fluid for the purpose of reusing it

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE493278A (en) *
FR1435773A (en) * 1964-06-01 1966-04-22 Technigaz Method and device for self-regulating the pressure of a confined fluid and their various applications
CH561564A5 (en) * 1972-09-22 1975-05-15 Aswag Ag
NL7509293A (en) * 1975-08-05 1977-02-08 Stamicarbon DEVICE FOR PREPARING POLYMERS WITH A WIDE MOLECULAR WEIGHT DISTRIBUTION.
DE2734323A1 (en) * 1977-07-29 1979-02-08 Agfa Gevaert Ag METHOD FOR GENERATING OR RELEASE OF GAS PRESSURE IN OR FROM THE IMAGE CHAMBER OF AN ELECTRON RADIOGRAPHIC IMAGING SYSTEM
US4333503A (en) * 1980-01-30 1982-06-08 John Stefiuk System and methods with scavenging capabilities for simultaneously filling and evacuating a plurality of separate pressure vessels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB868246A (en) * 1958-05-29 1961-05-17 Degussa Process for accelerating the cooling of materials treated in vacuum furnaces
CH425852A (en) * 1964-06-19 1966-12-15 Max Planck Gesellschaft Helium recovery device
NL8205061A (en) * 1981-12-30 1983-07-18 Siemerink Bv Rigid holder, e.g. for fermentation gas - having flexible partition sepg. gas space from space connected to air compressor
FR2634866A1 (en) * 1988-07-26 1990-02-02 Thierry Dimier Traitements The Method and device for recovering a fluid for the purpose of reusing it

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756036A1 (en) * 1996-11-20 1998-05-22 Dehon Sa Anciens Etablissement PROCESS FOR RE-PROOFING A PACKAGING FILLED WITH AN ACTIVE FLUID AND A PROPELLER AND APPARATUS FOR IMPLEMENTING THE PROCESS
EP0844430A1 (en) * 1996-11-20 1998-05-27 Dehon S.A. Process and installation for testing a package filled with a workingfluid and a propellant
FR2835907A1 (en) * 2002-02-12 2003-08-15 Air Liquide GAS QUENCHING PLANT AND CORRESPONDING QUENCHING METHOD
WO2003068998A1 (en) * 2002-02-12 2003-08-21 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas quenching installation and the corresponding quenching method
US7632453B2 (en) 2003-08-21 2009-12-15 L'air Liquide-Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas quenching method using a recycling facility
WO2005021805A1 (en) * 2003-08-21 2005-03-10 L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas quenching method using a recycling facility
FR2858983A1 (en) * 2003-08-21 2005-02-25 Air Liquide Method of quenching in gas where the gas is recycled by passage through a compression/supression group to a balancing capacity feeding the quenching cell
CN102661481A (en) * 2012-05-04 2012-09-12 昆山市恒安工业气体有限公司 Waste gas recovery unit for tank car
CN102658938A (en) * 2012-05-18 2012-09-12 昆山市恒安工业气体有限公司 Intelligent waste gas recovery device for tank truck
CN104534275A (en) * 2015-01-19 2015-04-22 西南交通大学 Special cabinet of helium gas recycling device
CN104534275B (en) * 2015-01-19 2016-04-20 西南交通大学 A kind of special machine cabinet of helium recovery recycling device
CN108980600A (en) * 2018-07-27 2018-12-11 清华大学 A kind of underground constant-pressure gas storage device
CN111365608A (en) * 2020-04-23 2020-07-03 蓝箭航天空间科技股份有限公司 Method for filling and recovering high-pressure gas
CN111365608B (en) * 2020-04-23 2021-03-26 蓝箭航天空间科技股份有限公司 Method for filling and recovering high-pressure gas

Also Published As

Publication number Publication date
KR900014606A (en) 1990-10-24
JP2982074B2 (en) 1999-11-22
JPH039199A (en) 1991-01-17
US5018551A (en) 1991-05-28
CA2012269A1 (en) 1990-09-17
FR2644557A1 (en) 1990-09-21

Similar Documents

Publication Publication Date Title
EP0388332A1 (en) Device for pressurised injection of large quantities of gas into a closed receptacle and recovery of the gas
EP2313319B1 (en) Method for conditioning a fluid product in a dispenser
LU83701A1 (en) DEVICE FOR CONTROLLING THE CONTENT AND FILLING OF A POWDER MATERIALS DISPENSING TANK
EP0727557A1 (en) Process and installation for charging a filling gas into an enclosure
US2335192A (en) Packaging process
FR2485502A1 (en) PROCESS AND APPARATUS FOR FILLING CONTAINERS WITH A LIQUID, IN PARTICULAR BEVERAGES, WITH INERT GAS RECOVERY
EP1974357B1 (en) Method and device for closing in a water-filled pool a loaded case with irradiated nuclear fuel
CH370914A (en) Process for the distribution of granular materials and device for carrying out this process
EP0968387B1 (en) Method and installation for filling a tank under pressure
EP3488139B1 (en) Module and system for depressurising a cryogenic tank
FR2909480A1 (en) Irradiated nuclear fuel case transferring device for e.g. shipping container, has slide and circular O-ring joints sealing passage for transferring case between container and storage device and between transferring and storage devices
CH621954A5 (en)
FR2527565A1 (en) IMPROVED TANK FOR STORING LIQUIDS AT TEMPERATURES DIFFERENT FROM ATMOSPHERIC TEMPERATURE
EP0949448A1 (en) Installation and method for filling bottles
EP0192566B1 (en) Process and device for ensuring the transfer of a fluid containing an explosive component
BE897840A (en) PROCESS AND DEVICE FOR PUSHING GRANULAR MOLDING MATERIALS
EP0323459A1 (en) A method of emptying gas containers and means therefor
WO2015118261A1 (en) Method for supplying a hydrogen gas distribution station at constant pressure, and associated station
FR2555553A1 (en) FLEXIBLE CONTAINER FOR TRANSPORTING FLUIDS
FR2877403A1 (en) DEVICE FOR SUPPLYING A FUEL ENGINE WITH FUEL AND FUEL
FR2720193A1 (en) Method of introducing an electrolyte into an accumulator element casing and installation for its implementation.
BE1002543A6 (en) Sanitary apparatus
FR2499641A1 (en) Pipe stress limiting hydraulic accumulator - uses pressurised gas to stabilise fluid pressure in casing surrounding pipe
EP0275753B1 (en) System for charging munitions with a molten explosive
EP0104994A1 (en) Secondary thermal carrier circuit for a liquid metal-cooled nuclear reactor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19901214

17Q First examination report despatched

Effective date: 19920904

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930315