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EP0430731B1 - Vessel for cryogenic liquid - Google Patents

Vessel for cryogenic liquid Download PDF

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Publication number
EP0430731B1
EP0430731B1 EP90403080A EP90403080A EP0430731B1 EP 0430731 B1 EP0430731 B1 EP 0430731B1 EP 90403080 A EP90403080 A EP 90403080A EP 90403080 A EP90403080 A EP 90403080A EP 0430731 B1 EP0430731 B1 EP 0430731B1
Authority
EP
European Patent Office
Prior art keywords
tank according
internal
external
turn
shell
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.)
Expired - Lifetime
Application number
EP90403080A
Other languages
German (de)
French (fr)
Other versions
EP0430731A1 (en
Inventor
Cornelis Klok
Daniel Delatte
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0430731A1 publication Critical patent/EP0430731A1/en
Application granted granted Critical
Publication of EP0430731B1 publication Critical patent/EP0430731B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • F17C2201/0119—Shape cylindrical with flat 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/014—Suspension means
    • F17C2203/018—Suspension means by attachment at the neck
    • 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • 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
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • 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
    • F17C2260/01—Improving mechanical properties or manufacturing

Definitions

  • the present invention relates to tanks for cryogenic liquids, of the type comprising an internal envelope and an external envelope defining between them an intermediate volume of insulation, and a tubing for sampling cryogenic liquid in the internal envelope comprising a first part extending in the intermediate volume between a lower part of the internal envelope and an upper part of the external envelope (as known, for example, from EP-A-0 098 030), and in particular the distribution tanks, in particular of liquid nitrogen, self-pressurizable by means of said sampling tube.
  • the first part, or internal part, of the tubing comprises a section in heat exchange contact with the external envelope to at least partially vaporize the liquid sampled in the internal envelope.
  • the joining, by brazing, welding or gluing between the section and the external envelope presents a certain number of problems, in particular of deformation of the external envelope, and strike of significantly manufacturing costs.
  • the object of the present invention is to provide a reservoir for cryogenic liquid with a robust and simplified structure, with reduced manufacturing costs and allowing a wide range of choice of materials for the constituent elements according to needs and uses.
  • the first part of the tubing comprises a section maintained elastically in contact against the internal wall of the external envelope.
  • this section comprises at least one turn, elastic means cooperating with the turn to tend to cause the radial opening of the latter and therefore to keep it applied against the outer casing.
  • the sampling tube is made of light alloy, for example aluminum, care must be taken, with such materials which are good conductors of heat, to limit heat loss by direct conductivity between the internal envelope and the external envelope.
  • the first part of the sampling tube is connected to an end portion by a section made of less heat-conducting material, for example plastic material.
  • FIG. 1 shows a cryogenic tank 1 of the self-pressurizable type for the distribution of liquid nitrogen, conventionally comprising an internal envelope 2 forming a reservoir for the cryogenic liquid, and an external envelope 3 spaced from the internal envelope 2 to provide an intermediate space 4 allowing the establishment of a multilayer insulation 5 applied to the internal envelope 2, the intermediate space 4 being vacuum-pumped through a closable connection 6.
  • An absorbent product 7 is advantageously placed in the intermediate space 4 to trap any residual gases.
  • the inner 2 and outer 3 envelopes are both made of aluminum from a ferrule 11, 12 and a bottom reported by welding 13, 14, respectively.
  • the ferrule 12 of the external envelope 3 advantageously has stiffening waves 15a, 15b, 15c.
  • the reservoir comprises a neck 21, typically formed of a tubular piece of epoxy resin reinforced with glass fibers, which is glued in neck portions with reduced diameter of the envelopes 2 and 3 and secured at the end, by example by gluing, to a massive piece of aluminum 22 having an upper face support for a sealing plug and a radial passage 24 forming the downstream end of a pressurization circuit 25 comprising an external tube 26 fitted with a valve 27 extending between the passage 24 and a crossing end piece 28 of the external casing 3.
  • the pressurization circuit has an internal part 29, extending in the intermediate space 4 from the connector 28 to the lower zone of the reservoir, firstly along, at 30, a generator internal of the external envelope 3 and forming, in the vicinity of the bottom of the tank, at least two turns 31, 32 advantageously received in one of the waves (15a) of the external envelope and which are kept permanently resiliently pressed against the internal face of the external envelope as will be seen later.
  • the tubing 29 is made of a material which is good at conducting heat, in particular aluminum
  • the lower end of the part of tubing 29 is connected to a tubular section 33, made of material which is poorly conductive of heat , for example in plastic material such as an epoxy resin reinforced with glass fibers, the two ends of which are secured respectively to a nozzle 36 for connection to the tube 29 and to a nozzle 37 for connection to a curved end section 38 even connected to a nozzle 39 integral with the bottom 13 of the internal envelope 2.
  • each turn 31, 32 against the inner face of the outer casing 3 is provided by at least one tension spring 41, 42, acting between opposite portions of the turn so as to tend to cause a radial opening of the latter, the anchoring of the ends of a spring on a turn being ensured by self-locking plates 43, 44.
  • a withdrawal device 52 comprising a dip tube 53 extending to in the vicinity of the bottom of the internal envelope 2 and which gives off the radial passage 24 towards the gaseous sky of the internal envelope 2.
  • the withdrawal device 52 further comprises a valve 54 for withdrawal of the cryogenic liquid from the internal envelope 2 via the dip tube 53.
  • the outer casing 3, the inner casing 2 and the tubing part 29 and the final section 38 are made of aluminum, the tubing portions being tightly connected to the end pieces, 28, 36 and 37 by collage.
  • the tubing part 29 can be made of stainless steel, in which case the tubular section made of insulating material 33 can be omitted, the stainless steel tube being fixed to the end pieces 28 and 39 by gluing or brazing.
  • the tubing part 29 made of aluminum it is also possible to use a part of copper tubing, which also requires the use of the insulating section 33.
  • at least the internal envelope, as well as advantageously the sampling tubing can be made of stainless steel.
  • the reservoir according to the invention makes it possible to produce the internal and external envelopes as well as the sampling tubing in plastic material, for example in epoxy resin reinforced with glass fibers or in polycarbonate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)

Description

La présente invention concerne les réservoirs pour liquides cryogéniques, du type comprenant une enveloppe interne et une enveloppe externe définissant entre elles un volume intercalaire d'isolation, et une tubulure de prélèvement de liquide cryogénique dans l'enveloppe interne comportant une première partie s'étendant dans le volume intercalaire entre une partie inférieure de l'enveloppe interne et une partie supérieure de l'enveloppe externe (comme connu, par example, du EP-A- 0 098 030), et notamment les réservoirs de distribution, en particulier d'azote liquide, auto-pressurisables au moyen de ladite tubulure de prélèvement.The present invention relates to tanks for cryogenic liquids, of the type comprising an internal envelope and an external envelope defining between them an intermediate volume of insulation, and a tubing for sampling cryogenic liquid in the internal envelope comprising a first part extending in the intermediate volume between a lower part of the internal envelope and an upper part of the external envelope (as known, for example, from EP-A-0 098 030), and in particular the distribution tanks, in particular of liquid nitrogen, self-pressurizable by means of said sampling tube.

Pour obtenir en sortie de la tubulure de prélèvement de liquide cryogénique une phase gazeuse, la première partie, ou partie interne, de la tubulure comporte un tronçon en contact d'échange thermique avec l'enveloppe externe pour vaporiser au moins partiellement le liquide prélevé dans l'enveloppe interne. Selon les matériaux constitutifs de l'enveloppe externe et de la tubulure, la solidarisation, par brasage, soudage ou collage entre le tronçon et l'enveloppe externe présente un certain nombre de problèmes, notamment de déformation de l'enveloppe externe, et grève de façon significative les coûts de fabrication.To obtain a gaseous phase at the outlet of the cryogenic liquid sampling tubing, the first part, or internal part, of the tubing comprises a section in heat exchange contact with the external envelope to at least partially vaporize the liquid sampled in the internal envelope. According to the constituent materials of the external envelope and the tubing, the joining, by brazing, welding or gluing between the section and the external envelope presents a certain number of problems, in particular of deformation of the external envelope, and strike of significantly manufacturing costs.

La présente invention a pour objet de proposer un réservoir pour liquide cryogénique de structure robuste et simplifiée, de coûts de fabrication réduits et permettant une large gamme de choix des matériaux des éléments constitutifs selon les besoins et les utilisations.The object of the present invention is to provide a reservoir for cryogenic liquid with a robust and simplified structure, with reduced manufacturing costs and allowing a wide range of choice of materials for the constituent elements according to needs and uses.

Pour ce faire, selon une caractéristique de l'invention, la première partie de la tubulure comporte un tronçon maintenu élastiquement en contact contre la paroi interne de l'enveloppe externe. Typiquement, ce tronçon comprend au moins une spire, des moyens élastiques coopérant avec la spire pour tendre à provoquer l'ouverture radiale de cette dernière et donc à la maintenir appliquée contre l'enveloppe externe.To do this, according to a characteristic of the invention, the first part of the tubing comprises a section maintained elastically in contact against the internal wall of the external envelope. Typically, this section comprises at least one turn, elastic means cooperating with the turn to tend to cause the radial opening of the latter and therefore to keep it applied against the outer casing.

Avec un tel agencement, le contact d'échange thermique est assuré quels que soient les matériaux constitutifs de la tubulure et de l'enveloppe externe et cet agencement permet de limiter grandement la transmission de chocs ou de vibrations entre l'enveloppe externe et l'enveloppe interne, et donc d'assurer une durée de vie accrue au réservoir.With such an arrangement, the heat exchange contact is ensured whatever the materials constituting the tubing and the external envelope and this arrangement makes it possible to greatly limit the transmission of shocks or vibrations between the external envelope and the inner casing, and therefore ensuring an increased service life of the tank.

Selon une autre caractéristique de l'invention, si par exemple pour des considérations de poids global, la tubulure de prélèvement est réalisée en alliage léger, par exemple en aluminium, il faut veiller, avec de tels matériaux bons conducteurs de la chaleur, à limiter la déperdition thermique par conductibilité directe entre l'enveloppe interne et l'enveloppe externe.According to another characteristic of the invention, if for example for considerations of overall weight, the sampling tube is made of light alloy, for example aluminum, care must be taken, with such materials which are good conductors of heat, to limit heat loss by direct conductivity between the internal envelope and the external envelope.

A cet effet, selon une autre caractéristique de l'invention, la première partie de la tubulure de prélèvement est raccordée à une portion d'extrémité par un tronçon en matériau moins bon conducteur de la chaleur, par exemple en matériau plastique.To this end, according to another characteristic of the invention, the first part of the sampling tube is connected to an end portion by a section made of less heat-conducting material, for example plastic material.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description suivante d'un mode de réalisation, donné à titre illustratif mais nullement limitatif, fait en relation avec les dessins annexés sur lesquels :

  • la figure 1 est une vue schématique en demi-coupe longitudinale d'un réservoir cryogénique auto-pressurisable selon l'invention ;
  • la figure 2 en perspective du tronçon de contact de la première partie de la tubulure de prélèvement du réservoir de la figure 1.
Other characteristics and advantages of the present invention will emerge from the following description of an embodiment, given by way of illustration but in no way limiting, made in relation to the appended drawings in which:
  • Figure 1 is a schematic view in longitudinal half-section of a self-pressurizable cryogenic tank according to the invention;
  • FIG. 2 in perspective of the contact section of the first part of the sampling tube of the reservoir of FIG. 1.

On a représenté sur la figure 1 un réservoir cryogénique 1 du type auto-pressurisable pour la distribution d'azote liquide, comprenant classiquement une enveloppe interne 2 formant un réservoir pour le liquide cryogénique, et une enveloppe externe 3 espacée de l'enveloppe interne 2 pour ménager un espace intercalaire 4 permettant la mise en place d'une isolation multicouches 5 appliquée sur l'enveloppe interne 2, l'espace intercalaire 4 étant mis sous-vide par pompage au travers d'un raccord obturable 6. Un produit absorbant 7 est avantageusement placé dans l'espace intercalaire 4 pour piéger d'éventuels gaz résiduels.FIG. 1 shows a cryogenic tank 1 of the self-pressurizable type for the distribution of liquid nitrogen, conventionally comprising an internal envelope 2 forming a reservoir for the cryogenic liquid, and an external envelope 3 spaced from the internal envelope 2 to provide an intermediate space 4 allowing the establishment of a multilayer insulation 5 applied to the internal envelope 2, the intermediate space 4 being vacuum-pumped through a closable connection 6. An absorbent product 7 is advantageously placed in the intermediate space 4 to trap any residual gases.

Dans le mode de réalisation représenté sur la figure 1, les enveloppes interne 2 et externe 3 sont toutes deux réalisées en aluminium à partir d'une virole 11, 12 et d'un fond rapporté par soudage 13, 14, respectivement. La virole 12 de l'enveloppe externe 3 présente avantageusement des ondes de rigidification 15a, 15b, 15c.In the embodiment shown in Figure 1, the inner 2 and outer 3 envelopes are both made of aluminum from a ferrule 11, 12 and a bottom reported by welding 13, 14, respectively. The ferrule 12 of the external envelope 3 advantageously has stiffening waves 15a, 15b, 15c.

De façon également classique, le réservoir comporte un col 21, formé typiquement d'une pièce tubulaire en résine époxy armée de fibres de verre, qui est collée dans des parties de col à diamètre réduit des enveloppes 2 et 3 et solidarisée en bout, par exemple par collage, à une pièce massive en aluminium 22 présentant une face supérieure d'appui pour un bouchon d'obturation et un passage radial 24 formant l'extrémité aval d'un circuit de pressurisation 25 comprenant une tubulure externe 26 équipée d'une vanne 27 s'étendant entre le passage 24 et un embout de traversée 28 de l'enveloppe externe 3. Le circuit de pressurisation comporte une partie interne 29, s'étendant dans l'espace intercalaire 4 depuis le raccord 28 jusqu'à la zone inférieure du réservoir en longeant tout d'abord, en 30, une génératrice interne de l'enveloppe externe 3 et formant, au voisinage du fond du réservoir, au moins deux spires 31, 32 avantageusement reçues dans une des ondes (15a) de l'enveloppe externe et qui sont maintenues plaquées élastiquement en permanence sur la face interne de l'enveloppe externe comme on le verra plus loin. Si, comme dans l'exemple représenté, la tubulure 29 est en matériau bon conducteur de la chaleur, notamment en aluminium, l'extrémité inférieure de la partie de tubulure 29 est raccordée à un tronçon tubulaire 33, en matériau faiblement conducteur de la chaleur, par exemple en matériau plastique tel qu'une résine epoxy armée de fibres de verre, dont les deux extrémités sont solidarisées respectivement à un embout 36 de raccordement à la tubulure 29 et à un embout 37 de raccordement à un tronçon terminal recourbé 38, lui-même raccordé à un embout 39 solidaire du fond 13 de l'enveloppe interne 2.Also in a conventional manner, the reservoir comprises a neck 21, typically formed of a tubular piece of epoxy resin reinforced with glass fibers, which is glued in neck portions with reduced diameter of the envelopes 2 and 3 and secured at the end, by example by gluing, to a massive piece of aluminum 22 having an upper face support for a sealing plug and a radial passage 24 forming the downstream end of a pressurization circuit 25 comprising an external tube 26 fitted with a valve 27 extending between the passage 24 and a crossing end piece 28 of the external casing 3. The pressurization circuit has an internal part 29, extending in the intermediate space 4 from the connector 28 to the lower zone of the reservoir, firstly along, at 30, a generator internal of the external envelope 3 and forming, in the vicinity of the bottom of the tank, at least two turns 31, 32 advantageously received in one of the waves (15a) of the external envelope and which are kept permanently resiliently pressed against the internal face of the external envelope as will be seen later. If, as in the example shown, the tubing 29 is made of a material which is good at conducting heat, in particular aluminum, the lower end of the part of tubing 29 is connected to a tubular section 33, made of material which is poorly conductive of heat , for example in plastic material such as an epoxy resin reinforced with glass fibers, the two ends of which are secured respectively to a nozzle 36 for connection to the tube 29 and to a nozzle 37 for connection to a curved end section 38 even connected to a nozzle 39 integral with the bottom 13 of the internal envelope 2.

Comme on le voit mieux sur la figure 2, l'application sous pression de chaque spire 31, 32 contre la face interne de l'enveloppe externe 3 est assurée par au moins un ressort de tension 41, 42, agissant entre des portions opposées de la spire de façon à tendre à provoquer une ouverture radiale de cette dernière, l'ancrage des extrémités d'un ressort sur une spire étant assuré par des plaquettes auto-bloquantes 43, 44.As best seen in Figure 2, the application under pressure of each turn 31, 32 against the inner face of the outer casing 3 is provided by at least one tension spring 41, 42, acting between opposite portions of the turn so as to tend to cause a radial opening of the latter, the anchoring of the ends of a spring on a turn being ensured by self-locking plates 43, 44.

Pour l'utilisation du réservoir cryogénique qui vient d'être décrit, on installe, à la place du bouchon servant à l'obturation pendant le transport et le stockage, un dispositif de soutirage 52 comportant un tube plongeur 53 s'étendant jusqu'au voisinage du fond de l'enveloppe interne 2 et qui dégage le passage radial 24 vers le ciel gazeux de l'enveloppe interne 2. Pour obtenir la pressurisation du réservoir, il suffit alors d'ouvrir la vanne 27, ce qui permet d'injecter du gaz sous pression soutiré par le circuit 25 dans le ciel gazeux du réservoir, le liquide cryogénique soutiré se vaporisant au contact de l'enveloppe externe 3 au niveau des spires 31 et 32. Le dispositif de soutirage 52 comporte en outre une vanne 54 de soutirage du liquide cryogénique dans l'enveloppe interne 2 via le tube plongeur 53.For the use of the cryogenic tank which has just been described, there is installed, in place of the plug used for closing during transport and storage, a withdrawal device 52 comprising a dip tube 53 extending to in the vicinity of the bottom of the internal envelope 2 and which gives off the radial passage 24 towards the gaseous sky of the internal envelope 2. To obtain pressurization of the reservoir, it is then sufficient to open the valve 27, which makes it possible to inject pressurized gas withdrawn through the circuit 25 into the gas overhead of the reservoir, the withdrawn cryogenic liquid vaporizing on contact with the external envelope 3 at the turns 31 and 32. The withdrawal device 52 further comprises a valve 54 for withdrawal of the cryogenic liquid from the internal envelope 2 via the dip tube 53.

Dans le mode de réalisation représenté sur la figure 1, l'enveloppe externe 3, l'enveloppe interne 2 et la partie de tubulure 29 et le tronçon final 38 sont réalisés en aluminium, les portions de tubulures étant reliées de façon étanches aux embouts, 28, 36 et 37 par collage. En variante, la partie de tubulure 29 peut être réalisée en acier inoxydable, auquel cas on peut supprimer le tronçon tubulaire en matériau isolant 33, le tube en acier inoxydable étant fixé aux embouts 28 et 39 par collage ou brasage. En place et lieu de la partie de tubulure 29 en aluminium, on peut également utiliser une partie de tubulure en cuivre, qui impose également l'utilisation du tronçon isolant 33. Egalement en variante, au moins l'enveloppe interne, ainsi qu'avantageusement la tubulure de prélèvement peuvent être réalisées en acier inoxydable. Enfin, le réservoir selon l'invention permet de réaliser les enveloppes interne et externe ainsi que la tubulure de prélèvement en matériau plastique, par exemple en résine epoxy armée de fibres de verre ou en polycarbonate.In the embodiment shown in FIG. 1, the outer casing 3, the inner casing 2 and the tubing part 29 and the final section 38 are made of aluminum, the tubing portions being tightly connected to the end pieces, 28, 36 and 37 by collage. Alternatively, the tubing part 29 can be made of stainless steel, in which case the tubular section made of insulating material 33 can be omitted, the stainless steel tube being fixed to the end pieces 28 and 39 by gluing or brazing. In place of the tubing part 29 made of aluminum, it is also possible to use a part of copper tubing, which also requires the use of the insulating section 33. Also alternatively, at least the internal envelope, as well as advantageously the sampling tubing can be made of stainless steel. Finally, the reservoir according to the invention makes it possible to produce the internal and external envelopes as well as the sampling tubing in plastic material, for example in epoxy resin reinforced with glass fibers or in polycarbonate.

Claims (12)

  1. Tank for cryogenic liquid, comprising an internal shell (2) and an external shell (3), defining between them an intermediate volume (4), and a cryogenic liquid withdrawal pipe including a first part (29) extending into the intermediate volume (4) between a lower part (39) of the internal shell (2) and an upper part (29) of the external shell (3), characterized in that the pipe (29) includes a segment (31, 32) held elastically in contact with the internal wall of the external shell (3)
  2. Tank according to Claim 1, characterized in that the pipe segment comprises at least one turn (31, 32) and elastic means (41, 42) interacting with the turn such as to tend to cause radial opening of the turn.
  3. Tank according to Claim 2, characterized in that the elastic means comprise at least one spring (41; 42) stretched between opposite portions of the turn (31, 32).
  4. Tank according to Claim 3, characterized in that the spring (41; 42) is solidly attached to the turn (31, 32) by self-locking platelets (43, 44).
  5. Tank according to one of Claims 2 to 4, characterized in that at least one turn (31, 32) is at least partially accommodated in a rigidifying corrugation (15a) of the external shell (3).
  6. Tank according to one of Claims 1 to 5, characterized in that the internal (2) and external (3) shells are made of the same material.
  7. Tank according to one of Claims 1 to 5, characterized in that the internal (2) and external (3) shells are made of different materials.
  8. Tank according to Claim 6, characterized in that the first pipe part (29) is made of the same material as the internal (2) and external (3) shells.
  9. Tank according to Claim 7, characterized in that the first pipe part (29) is made of a different material from the second material of the external shell (3).
  10. Tank according to one of Claims 7 to 9, characterized in that at least the external shell (3) is made of a light alloy.
  11. Tank according to one of the preceding Claims, characterized in that the first pipe part (29) is made of a material which is a good conductor of heat and is joined to an upstream end portion (38) by a segment (33) made of a material which is a less good conductor of heat.
  12. Tank according to one of the preceding claims, characterized in that the withdrawal pipe includes a second part (26) connected to the neck (21) of the internal shell (2) to form a pressurization circuit for the tank.
EP90403080A 1989-12-01 1990-10-31 Vessel for cryogenic liquid Expired - Lifetime EP0430731B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915843A FR2655407B1 (en) 1989-12-01 1989-12-01 TANK FOR CRYOENIC LIQUID.
FR8915843 1989-12-01

Publications (2)

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EP0430731A1 EP0430731A1 (en) 1991-06-05
EP0430731B1 true EP0430731B1 (en) 1994-04-06

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EP90403080A Expired - Lifetime EP0430731B1 (en) 1989-12-01 1990-10-31 Vessel for cryogenic liquid

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US (1) US5111666A (en)
EP (1) EP0430731B1 (en)
JP (1) JP3213615B2 (en)
BR (1) BR9006055A (en)
CZ (1) CZ283232B6 (en)
DE (1) DE69007942T2 (en)
FR (1) FR2655407B1 (en)
RU (1) RU1838715C (en)
SK (1) SK280707B6 (en)

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JP3129658B2 (en) * 1996-04-26 2001-01-31 本田技研工業株式会社 Pressurized fuel pipe structure for automobile and pipe leak inspection method
DE10024909A1 (en) * 2000-05-19 2001-12-06 Messer Griesheim Gmbh Device for transfer compressed gas generation in containers for cryogenic liquids
US6505469B1 (en) 2001-10-15 2003-01-14 Chart Inc. Gas dispensing system for cryogenic liquid vessels
FR2987425B1 (en) * 2012-02-24 2014-03-28 Air Liquide CRYOGENIC FLUID RESERVOIR AND METHOD OF MANUFACTURE
CN104154413A (en) * 2014-08-12 2014-11-19 山东义升环保设备有限公司 Double-heat-insulation large joint pipe device in LNG horizontal tank interlayer
DE102014219425A1 (en) * 2014-09-25 2016-03-31 Bayerische Motoren Werke Aktiengesellschaft Container for the cryogenic storage of fuel
US12484588B2 (en) 2018-09-14 2025-12-02 One Way Plastics B.V. Partially transparent disposable piping bag
US20210372566A1 (en) * 2020-05-26 2021-12-02 Jason Clarke Cryogenic nitrogen sourced gas-driven pneumatic devices
NO20201155A1 (en) * 2020-10-23 2022-04-25 Ic Tech As Improved cryogenic storage tank
CN113418134B (en) * 2021-05-21 2022-11-11 长沙中益气体有限公司 Liquid nitrogen storage jar with vapour-pressure type safety protection function

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Also Published As

Publication number Publication date
SK570490A3 (en) 2000-06-12
JP3213615B2 (en) 2001-10-02
CZ570490A3 (en) 1997-10-15
CZ283232B6 (en) 1998-02-18
FR2655407B1 (en) 1993-10-29
JPH03198385A (en) 1991-08-29
SK280707B6 (en) 2000-06-12
US5111666A (en) 1992-05-12
DE69007942T2 (en) 1994-07-21
EP0430731A1 (en) 1991-06-05
FR2655407A1 (en) 1991-06-07
RU1838715C (en) 1993-08-30
BR9006055A (en) 1991-09-24
DE69007942D1 (en) 1994-05-11

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