EP1718560A1 - System for connecting the ends of fluid conduits - Google Patents

System for connecting the ends of fluid conduits

Info

Publication number
EP1718560A1
EP1718560A1 EP04816531A EP04816531A EP1718560A1 EP 1718560 A1 EP1718560 A1 EP 1718560A1 EP 04816531 A EP04816531 A EP 04816531A EP 04816531 A EP04816531 A EP 04816531A EP 1718560 A1 EP1718560 A1 EP 1718560A1
Authority
EP
European Patent Office
Prior art keywords
male
female
female part
male part
tubular guide
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Withdrawn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
EP04816531A
Other languages
German (de)
French (fr)
Inventor
Laurent Allidieres
Eric Faure
Alain Ravex
Florent Janin
Gérard Marot
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance 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 a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1718560A1 publication Critical patent/EP1718560A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06Details or accessories
    • B67D7/42Filling nozzles
    • B67D7/44Filling nozzles automatically closing
    • B67D7/52Filling nozzles automatically closing and provided with additional flow-controlling valve means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06Details or accessories
    • B67D7/42Filling nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/28Couplings of the quick-acting type with fluid cut-off means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/28Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0376Dispensing pistols
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/32Hydrogen storage

Definitions

  • the present invention relates to connection systems for fluid line ends, in particular cryogenic, in particular for liquid fuels, typically liquid hydrogen or liquefied natural gas, for motor vehicles.
  • Fluid line end connection systems, in particular cryogenic fluid for motor vehicles have hitherto been of complex and delicate configurations for ensuring the required tightness, in particular using coupled rotary ball valves.
  • the object of the present invention is to provide a connection system, particularly suitable for filling tanks with liquid hydrogen or liquefied natural gas, of simple and efficient structure, effectively ensuring cold and hot seals by implementing a single axial translation operation facilitating manual implementation and / or easy automation.
  • the system for connecting the ends of fluid lines comprises a female part intended to receive a portion of male part, the male parts and female each comprising a valve for closing the fluid line, normally closed and movable in the open position in the connected configuration of the system, the male and female parts each further comprising an isolation valve normally closed and movable in the open position during the introduction of the male part into the female part.
  • the female part comprises a tubular guide with which the male part cooperates in sealed sliding, typically via a sliding joint at the end of the male part;
  • the male part comprises a central mandrel comprising the valve for closing the fluid supply pipe and sliding to penetrate the tubular guide of the female part;
  • the male part comprises, behind the sliding joint at least, a first pivoting flap, forming an isolation valve, cooperating with the end of the tubular guide during the introduction of the male part into the female part;
  • the tubular guide of the female part comprises a second pivoting flap, forming an isolation valve, cooperating with the end of the central mandrel of the male part when the latter is introduced into the female part;
  • the male part is advantageously configured in the form of a gun which can be actuated manually and the female part is advantageously fitted in the body of a motor vehicle of which at least part of the mechanical and / or electrical power is supplied by liquid hydrogen or liquefied natural gas.
  • FIGS. 1 is a schematic perspective view of 'a connection system according to the invention before interconnection of the male and female parts
  • - Figure 2 is a view similar to Figure 1, but in longitudinal section
  • - Figure 3 is a view similar to Figure 2 showing the male and female parts at the start of interpenetration
  • - Figure 4 is a view similar to Figures 2 and 3 showing the connection system of the invention in connected configuration.
  • FIGS. 1 is a schematic perspective view of 'a connection system according to the invention before interconnection of the male and female parts
  • - Figure 2 is a view similar to Figure 1, but in longitudinal section
  • - Figure 3 is a view similar to Figure 2 showing the male and female parts at the start of interpenetration
  • - Figure 4 is a view similar to Figures 2 and 3 showing the connection system of the invention in connected configuration.
  • the main elements of the connection system according to the invention are recognized, namely a male part M configured in the shape of a gun with a manual actuating stock 50 and a trigger 51 for actuating a valve. filling, and a female part F, advantageously housed in an element 52 of a vehicle body and comprising a cylindrical cover 1 defining an interior volume 2 intended to receive the male part M.
  • the female part comprises, mounted in cantilever on a bottom plate 3 closing the cover 2 towards the rear, a tubular guide 4 comprising an annular end piece 5 and housing a coaxial tubular element 6 internally defining a fluid conduit 7 connected, via an outlet pipe 8, to a tank of liquid vehicle fuel (not represented).
  • the duct 7 is normally closed at its front end by a valve 9 urged axially by a spring against a seat formed by an annular part 60 at the front end of the tubular element 6.
  • the male part M comprises a external tubular part 10 extended by a tubular end portion 11 and enclosing a tubular mandrel 12 defining a downstream portion 13 of a filling circuit connecting, via an upstream pipe 14, to a circuit for supplying pressurized liquid fuel (not shown) of the filling station which includes the gun 50, M.
  • the duct portion 13 is normally closed downstream by a valve 15 axially elastically pressed against a seat formed by an annular piece 16 at the end of the mandrel 12.
  • the annular end piece 5 of the tubular element 4 of the female part F comprises at least one, typically two pivoting valves in the form of a half-disc 17, opening inwards, behind an axial annular sliding surface 18 intended to receive the mandrel 12 of the male part M.
  • the annular end part 11 of the latter also comprises at least one flap 19, pivoting inwards, advantageously two flaps or half-discs, in front of a sliding O-ring 20 of metal or PTFE type elastomer intended to cooperate in axial sliding with the periphery of the tubular guide 4 of the female part F.
  • One of the isolation valves 9,15 in this case the valve of the male part 4 of the part m âle M in the embodiment shown, comprises a rod 21 extending forwardly beyond the annular end piece 16.
  • the arrangement according to the invention allows easy and safe handling, easily robotized, the hot and cold seals being made in a single translational operation.
  • the cold parts remain isolated from ambient humidity thanks to the flaps 17 and 19, thus avoiding the formation of frost on the cold parts, and can be purged by a neutral gas, typically helium, admitted via a circuit 70 ( Figure 2), with compression / expansion cycles carried out before the cryogenic fluid passes, for example also under control of the trigger 51.
  • the system according to the invention prevents any leakage of cryogenic liquid to the outside, enables fast cold thanks to the little massive constituent elements, limiting the thermal loss on line, authorizes the immediate disconnection, even when the parts are cold and allows an immediate reuse also, if necessary, after disconnection.
  • the female part F which is the on-board part, has the simplest possible configuration, and therefore inexpensive.
  • the hot seal 20 is located on the male part M, on the filling station side therefore, which allows safer maintenance of this part.
  • the various structural elements of the male and female parts, as well as the flaps 17 and 19, are advantageously made of stainless steel.
  • the end of the tubular guide 4 of the female part F is advantageously closed, in non-connection condition, by a clip-on or screw-on plug 30, made of plastic material, to prevent the penetration of dust. in the sliding surface 18 of the female part F.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The female part (F) receiving the male part (M) comprises internally a tubular guide (4) with which the male part cooperates in a tight sealing manner (joint 20); the male and female parts respectively comprise at the input thereof a pivoting insulation flap (19; 17) which can open in a sequence when the male part penetrates the female part prior to the opening of the flap valves (15; 9) of the portions of the fluid circuit (13,7). The invention can be used to fill tanks of automobiles with cryogenic fluid, particularly liquid hydrogen.

Description

Système de connexion d'extrémités de conduites de fluide La présente invention concerne les systèmes de connexion d'extrémités de conduites de fluide, en particulier cryogéniques, notamment de combustibles liquides, typiquement d'hydrogène liquide ou de gaz naturel liquéfié, pour véhicules automobiles. Les systèmes de connexion d'extrémités de conduites de fluide, notamment de fluide cryogénique pour véhicule automobile, sont jusqu'à présent de configurations complexe et délicate pour assurer les étanchéités requises, mettant notamment en œuvre des vannes à boisseaux rotatifs couplés. La présente invention a pour objet de proposer un système de connexion, convenant en particulier pour le remplissage de réservoirs d'hydrogène liquide ou de gaz naturel liquéfié, de structure simple et efficace, assurant efficacement les étanchéités froides et chaudes en mettant en œuvre une seule opération de translation axiale facilitant la mise en œuvre manuelle et/ou une automatisation aisée. Pour ce faire, selon une caractéristique de l'invention, le système de connexion d'extrémités de conduites de fluide, en particulier de combustible liquide pour véhicule automobile, comprend une partie femelle destinée à recevoir une portion de partie mâle, les parties mâle et femelle comprenant chacune un clapet de fermeture de conduite de fluide, normalement fermé et déplaçable en position d'ouverture en configuration connectée du système, les parties mâle et femelle comportant en outre chacune un clapet d'isolation normalement fermé et déplaçable en position d'ouverture lors de l'introduction de la partie mâle dans la partie femelle. Selon d'autres caractéristiques de l'invention : - la partie femelle comporte un guide tubulaire avec lequel coopère en coulissement étanche la partie mâle, typiquement via un joint coulissant à l'extrémité de la partie mâle ; - la partie mâle comporte un mandrin central comportant le clapet de fermeture de la conduite d'alimentation de fluide et pénétrant à coulissement dans le guide tubulaire de la partie femelle ; - la partie mâle comporte, en arrière du joint coulissant au moins, un premier volet pivotant, formant clapet d'isolation, coopérant avec l'extrémité du guide tubulaire lors de l'introduction de la partie mâle dans la partie femelle ; - le guide tubulaire de la partie femelle comporte un deuxième volet pivotant, formant clapet d'isolation, coopérant avec l'extrémité du mandrin central de la partie mâle lors de l'introduction de cette dernière dans la partie femelle ; - la partie mâle est avantageusement configurée en forme de pistolet actionnable manuellement et la partie femelle est avantageusement aménagée dans la carrosserie d'un véhicule automobile dont au moins une partie de la puissance mécanique et/ou électrique est fournie par de l'hydrogène liquide ou du gaz naturel liquéfié. D'autres caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation, donnée à titre illustratif mais nullement limitatif, faite en relation avec les dessins annexés, sur lesquels : - la figure 1 est une vue schématique en perspective d'un système de connexion selon l'invention avant interconnexion des parties mâle et femelle ; - la figure 2 est une vue analogue à la figure 1 , mais en coupe longitudinale ; - la figure 3 est une vue analogue à la figure 2 montrant les parties mâle et femelle en début d'interpénétration ; et - la figure 4 est une vue analogue aux figures 2 et 3 montrant le système de connexion de l'invention en configuration connectée. Sur les figures 1 et 2, on reconnaît les éléments principaux du système de connexion selon l'invention, à savoir une partie mâle M configurée en forme de pistolet avec une crosse d'actionnement manuelle 50 et une gâchette 51 d'actionnement de valve de remplissage, et une partie femelle F, logée avantageusement dans un élément 52 d'une carrosserie de véhicule et comprenant un capotage cylindrique 1 délimitant un volume intérieur 2 destiné à recevoir la partie mâle M. Comme on le voit mieux sur la figure 2, la partie femelle comprend, monté en porte-à-faux sur une platine de fond 3 fermant le capotage 2 vers l'arrière, un guide tubulaire 4 comportant une pièce d'extrémité annulaire 5 et abritant un élément tubulaire coaxial 6 définissant intérieurement un conduit de fluide 7 relié, via une tubulure de sortie 8, à un réservoir de combustible liquide de véhicule (non représenté). Le conduit 7 est normalement fermé à son extrémité avant par un clapet 9 sollicité axialement par un ressort contre un siège formé par une pièce annulaire 60 à l'extrémité avant de l'élément tubulaire 6. Pour sa part, la partie mâle M comprend une pièce tubulaire externe 10 prolongée par une partie tubulaire d'extrémité 11 et renfermant un mandrin tubulaire 12 définissant une portion aval 13 d'un circuit de remplissage se raccordant, via une canalisation amont 14, à un circuit de fourniture de combustible liquide sous pression (non représenté) de la station de remplissage dont fait partie le pistolet 50,M. La portion de conduit 13 est normalement fermée en aval par un clapet 15 plaqué axialement élastiquement contre un siège formé par une pièce annulaire 16 à l'extrémité du mandrin 12. Selon un aspect de l'invention, la pièce annulaire d'extrémité 5 de l'élément tubulaire 4 de la partie femelle F comporte au moins un, typiquement deux clapets pivotants en forme de demi-disque 17, ouvrant vers l'intérieur, en arrière d'une surface annulaire axiale de coulissement 18 destinée à recevoir le mandrin 12 de la partie mâle M. La partie d'extrémité annulaire 11 de cette dernière comporte également au moins un volet 19, pivotant vers l'intérieur, avantageusement deux volets ou demi-disques, en avant d'un joint torique coulissant 20 en métal ou élastomère de type PTFE destiné à coopérer en coulissement axial avec la périphérie du guide tubulaire 4 de la partie femelle F. L'un des clapets d'isolation 9,15, en l'occurrence le clapet de la partie mâle 4 de la partie mâle M dans le mode de réalisation représenté, comporte une tige 21 s'étendant vers l'avant au-delà de la pièce d'extrémité annulaire 16. La procédure de connexion du système selon l'invention va maintenant être décrite en relation avec les figures 3 et 4. Comme on le voit sur la figure 3, l'extrémité annulaire 11 de la partie mâleThe present invention relates to connection systems for fluid line ends, in particular cryogenic, in particular for liquid fuels, typically liquid hydrogen or liquefied natural gas, for motor vehicles. Fluid line end connection systems, in particular cryogenic fluid for motor vehicles, have hitherto been of complex and delicate configurations for ensuring the required tightness, in particular using coupled rotary ball valves. The object of the present invention is to provide a connection system, particularly suitable for filling tanks with liquid hydrogen or liquefied natural gas, of simple and efficient structure, effectively ensuring cold and hot seals by implementing a single axial translation operation facilitating manual implementation and / or easy automation. To do this, according to a characteristic of the invention, the system for connecting the ends of fluid lines, in particular liquid fuel for motor vehicles, comprises a female part intended to receive a portion of male part, the male parts and female each comprising a valve for closing the fluid line, normally closed and movable in the open position in the connected configuration of the system, the male and female parts each further comprising an isolation valve normally closed and movable in the open position during the introduction of the male part into the female part. According to other characteristics of the invention: - the female part comprises a tubular guide with which the male part cooperates in sealed sliding, typically via a sliding joint at the end of the male part; - The male part comprises a central mandrel comprising the valve for closing the fluid supply pipe and sliding to penetrate the tubular guide of the female part; - The male part comprises, behind the sliding joint at least, a first pivoting flap, forming an isolation valve, cooperating with the end of the tubular guide during the introduction of the male part into the female part; - The tubular guide of the female part comprises a second pivoting flap, forming an isolation valve, cooperating with the end of the central mandrel of the male part when the latter is introduced into the female part; the male part is advantageously configured in the form of a gun which can be actuated manually and the female part is advantageously fitted in the body of a motor vehicle of which at least part of the mechanical and / or electrical power is supplied by liquid hydrogen or liquefied natural gas. Other characteristics and advantages of the present invention will emerge from the following description of embodiments, given by way of illustration but in no way limiting, made in relation to the appended drawings, in which: - Figure 1 is a schematic perspective view of 'a connection system according to the invention before interconnection of the male and female parts; - Figure 2 is a view similar to Figure 1, but in longitudinal section; - Figure 3 is a view similar to Figure 2 showing the male and female parts at the start of interpenetration; and - Figure 4 is a view similar to Figures 2 and 3 showing the connection system of the invention in connected configuration. In FIGS. 1 and 2, the main elements of the connection system according to the invention are recognized, namely a male part M configured in the shape of a gun with a manual actuating stock 50 and a trigger 51 for actuating a valve. filling, and a female part F, advantageously housed in an element 52 of a vehicle body and comprising a cylindrical cover 1 defining an interior volume 2 intended to receive the male part M. As can be seen better in FIG. 2, the female part comprises, mounted in cantilever on a bottom plate 3 closing the cover 2 towards the rear, a tubular guide 4 comprising an annular end piece 5 and housing a coaxial tubular element 6 internally defining a fluid conduit 7 connected, via an outlet pipe 8, to a tank of liquid vehicle fuel (not represented). The duct 7 is normally closed at its front end by a valve 9 urged axially by a spring against a seat formed by an annular part 60 at the front end of the tubular element 6. For its part, the male part M comprises a external tubular part 10 extended by a tubular end portion 11 and enclosing a tubular mandrel 12 defining a downstream portion 13 of a filling circuit connecting, via an upstream pipe 14, to a circuit for supplying pressurized liquid fuel ( not shown) of the filling station which includes the gun 50, M. The duct portion 13 is normally closed downstream by a valve 15 axially elastically pressed against a seat formed by an annular piece 16 at the end of the mandrel 12. According to one aspect of the invention, the annular end piece 5 of the tubular element 4 of the female part F comprises at least one, typically two pivoting valves in the form of a half-disc 17, opening inwards, behind an axial annular sliding surface 18 intended to receive the mandrel 12 of the male part M. The annular end part 11 of the latter also comprises at least one flap 19, pivoting inwards, advantageously two flaps or half-discs, in front of a sliding O-ring 20 of metal or PTFE type elastomer intended to cooperate in axial sliding with the periphery of the tubular guide 4 of the female part F. One of the isolation valves 9,15, in this case the valve of the male part 4 of the part m âle M in the embodiment shown, comprises a rod 21 extending forwardly beyond the annular end piece 16. The connection procedure of the system according to the invention will now be described in relation to the Figures 3 and 4. As seen in Figure 3, the annular end 11 of the male part
M est tout d'abord introduite dans la partie femelle F en prenant appui coulissant sur le guide tubulaire 4 avec lequel le joint annulaire coulissant 20 forme immédiatement étanchéité « chaude », c'est-à-dire isolant les volumes intérieurs de la partie M et du guide tubulaire de l'atmosphère environnante. Dans la configuration initiale de la figure 3, les volets 17 et 19 demeurent fermés. En faisant pénétrer plus avant la partie mâle M dans la partie femelle F, la pièce d'extrémité annulaire 5 vient porter axialement contre le volet 19 de la partie mâle couvrant celui-ci et permettant la pénétration dans le guide tubulaire 4 du mandrin 12, lequel vient à son tour porter contre le volet 17 de la partie femelle F pour l'ouvrir. La pénétration linéaire continue de la partie mâle M dans la partie femelle F, avec le joint 20 coulissant sur la périphérie du guide tubulaire 4 et le mandrin 12 coulissant dans la portée 18, amène les faces axiales d'extrémités des pièces d'extrémité 16 et 60 en contact l'une avec l'autre, limitant ainsi la pénétration de la partie mâle M dans la partie femelle F mais avec l'extrémité libre de la tige 21 venant porter contre le clapet 9 et provoquer l'ouverture du clapet de remplissage 15, l'admission du combustible liquide sous pression par actionnement de la gâchette 51 dans la portion de conduite 10 jusqu'à la face avant du clapet intérieur 9 provoquant ensuite l'ouverture de ce dernier permettant le passage du combustible liquide de la conduite de remplissage 13 dans la conduite 8 jusqu'au réservoir récepteur du véhicule. On voit donc qu'avec le système selon l'invention, par un mouvement de translation unique, l'étanchéité « chaude » est assurée dès le début de connexion par le joint torique 20, ensuite les clapets d'isolation 19 et 17, protégeant normalement, en position de repos, les volumes intérieurs de la partie mâle M et de la partie femelle F, respectivement, sont ouverts, mettant ainsi en communication les zones « froides » intérieures des parties mâle et femelle avant que les clapets 15 et 9 ne viennent autoriser la circulation du fluide cryogénique sous pression, les séquences d'ouverture des volets et clapets étant assurés automatiquement par la simple pénétration progressive de la partie mâle dans la partie femelle. La procédure de déconnexion s'effectue exactement à l'inverse de celle décrite ci-dessus pour la procédure de connexion. L'agencement selon l'invention permet une manipulation aisée et sûre, aisément robotisable, les étanchéités chaudes puis froides se faisant en une seule opération de translation. Les parties froides demeurent isolées de l'humidité ambiante grâce aux volets 17 et 19, en évitant ainsi la formation de givre sur les parties froides, et peuvent être purgées par un gaz neutre, typiquement de l'hélium, admis via un circuit 70 (Figure 2), avec des cycles de compression/détente effectués avant le passage du fluide cryogénique, par exemple sous contrôle également de la gâchette 51. Le système selon l'invention évite toute fuite de liquide cryogénique vers l'extérieur, permet une mise en froid rapide grâce à des éléments constitutifs peu massifs, limitant la perte thermique en ligne, autorise la déconnexion immédiate, même lorsque les pièces sont froides et permet une réutilisation également immédiate, si nécessaire, après déconnexion. La partie femelle F, qui est la partie embarquée, a une configuration la plus simple possible, et donc peu onéreuse. En particulier, le joint chaud 20 est situé sur la pièce mâle M, côté station de remplissage donc, ce qui permet une maintenance plus sûre de cette pièce. Les différents éléments structurels des parties mâle et femelle, ainsi que les volets 17 et 19, sont avantageusement réalisés en acier inoxydable. Comme représenté sur les figures 1 et 2, l'extrémité du guide tubulaire 4 de la partie femelle F est avantageusement fermée, en condition de non- connexion, par un bouchon 30 clipsable ou vissable, en matériau plastique, pour éviter la pénétration de poussières dans la portée de coulissement 18 de la partie femelle F. Quoique l'invention ait été décrite avec un mode de réalisation particulier, elle ne s'en trouve pas limitée mais est susceptible de modifications et de variantes qui apparaîtront à l'homme du métier dans le cadre des revendications ci-après. M is first introduced into the female part F by slidingly resting on the tubular guide 4 with which the sliding annular seal 20 immediately forms a “hot” seal, that is to say isolating the interior volumes of the part M and the tubular guide of the surrounding atmosphere. In the initial configuration of FIG. 3, the flaps 17 and 19 remain closed. By making the male part M penetrate further into the female part F, the annular end piece 5 comes to bear axially against the flap 19 of the male part covering the latter and allowing penetration into the tubular guide 4 of the mandrel 12, which in turn bears against the flap 17 of the female part F to open it. The continuous linear penetration of the male part M into the female part F, with the seal 20 sliding on the periphery of the tubular guide 4 and the mandrel 12 sliding in the seat 18, brings the axial faces of the ends of the end pieces 16 and 60 in contact with each other, thus limiting the penetration of the male part M into the female part F but with the free end of the rod 21 coming to bear against the valve 9 and causing the valve to open. filling 15, the admission of the liquid fuel under pressure by actuation of the trigger 51 in the pipe portion 10 to the front face of the internal valve 9 then causing the opening of the latter allowing the passage of the liquid fuel from the pipe filling 13 in line 8 to the receiving tank of the vehicle. It can therefore be seen that with the system according to the invention, by a single translational movement, the “hot” seal is ensured from the start of connection by the O-ring 20, then the isolation valves 19 and 17, protecting normally, in the rest position, the internal volumes of the male part M and of the female part F, respectively, are open, thus bringing the internal "cold" zones of the male and female parts into communication before the valves 15 and 9 do not allow the circulation of the cryogenic fluid under pressure, the opening sequences of the flaps and valves being automatically ensured by the simple progressive penetration of the male part into the female part. The disconnection procedure is performed exactly the opposite of that described above for the connection procedure. The arrangement according to the invention allows easy and safe handling, easily robotized, the hot and cold seals being made in a single translational operation. The cold parts remain isolated from ambient humidity thanks to the flaps 17 and 19, thus avoiding the formation of frost on the cold parts, and can be purged by a neutral gas, typically helium, admitted via a circuit 70 ( Figure 2), with compression / expansion cycles carried out before the cryogenic fluid passes, for example also under control of the trigger 51. The system according to the invention prevents any leakage of cryogenic liquid to the outside, enables fast cold thanks to the little massive constituent elements, limiting the thermal loss on line, authorizes the immediate disconnection, even when the parts are cold and allows an immediate reuse also, if necessary, after disconnection. The female part F, which is the on-board part, has the simplest possible configuration, and therefore inexpensive. In particular, the hot seal 20 is located on the male part M, on the filling station side therefore, which allows safer maintenance of this part. The various structural elements of the male and female parts, as well as the flaps 17 and 19, are advantageously made of stainless steel. As shown in FIGS. 1 and 2, the end of the tubular guide 4 of the female part F is advantageously closed, in non-connection condition, by a clip-on or screw-on plug 30, made of plastic material, to prevent the penetration of dust. in the sliding surface 18 of the female part F. Although the invention has been described with a particular embodiment, it is not limited thereto but is susceptible to modifications and variants which will appear to a person skilled in the art in the context of the claims below.

Claims

REVENDICATIONS
1. Système de connexion d'extrémités de conduites de fluide, comprenant une partie femelle (F) destinée à recevoir une portion d'une partie mâle (M), les parties mâle et femelle comprenant chacune un clapet (15 ; 9) de fermeture de conduites de fluide, normalement fermé et déplacé en position d'ouverture en configuration connectée du système, les parties mâle et femelle comportant en outre chacune un clapet (19 ; 17) d'isolation normalement fermé et déplacé en position d'ouverture lors de l'introduction de la partie mâle dans la partie femelle. 1. Connection system for the ends of fluid conduits, comprising a female part (F) intended to receive a portion of a male part (M), the male and female parts each comprising a closing valve (15; 9) of fluid lines, normally closed and moved to the open position in the connected configuration of the system, the male and female parts each further comprising a normally closed isolation valve (19; 17) and moved to the open position when the introduction of the male part into the female part.
2. Système selon la revendication 1, caractérisé en ce que la partie femelle (F) comporte un guide tubulaire (4) avec lequel coopère en coulissement étanche la partie mâle (M). 2. System according to claim 1, characterized in that the female part (F) comprises a tubular guide (4) with which the male part (M) cooperates in sealed sliding.
3. Système selon la revendication 2, caractérisé en ce que l'extrémité3. System according to claim 2, characterized in that the end
(11 ) de la partie mâle (M) comporte un joint coulissant (20) coopérant avec le guide tubulaire (4) de la partie femelle (F). (11) of the male part (M) comprises a sliding seal (20) cooperating with the tubular guide (4) of the female part (F).
4. Système selon l'une des revendications 2 et 3, caractérisé en ce que la partie mâle (M) comporte un mandrin central (12) comportant le clapet (15) de fermeture de la conduite d'alimentation de fluide (13) et pénétrant à coulissement dans le guide tubulaire (4) de la partie femelle (F). 4. System according to one of claims 2 and 3, characterized in that the male part (M) comprises a central mandrel (12) comprising the valve (15) for closing the fluid supply line (13) and sliding into the tubular guide (4) of the female part (F).
5. Système selon l'une des revendications 2 à 4, caractérisé en ce que la partie mâle (M) comporte, en arrière du joint coulissant (20), au moins un premier volet pivotant (19) susceptible de coopérer avec l'extrémité (5) du guide tubulaire (4) de la partie femelle (F) lors de l'introduction de la partie mâle dans la partie femelle. 5. System according to one of claims 2 to 4, characterized in that the male part (M) comprises, behind the sliding joint (20), at least one first pivoting flap (19) capable of cooperating with the end (5) of the tubular guide (4) of the female part (F) during the introduction of the male part into the female part.
6. Système selon l'une des revendications 4 et 5, caractérisé en ce que le guide tubulaire (4) de la partie femelle (F) comporte un deuxième volet pivotant (17) susceptible de coopérer avec l'extrémité du mandrin central (12) de la partie mâle (M) lors de l'introduction de cette dernière dans la partie femelle (F). 6. System according to one of claims 4 and 5, characterized in that the tubular guide (4) of the female part (F) comprises a second pivoting flap (17) capable of cooperating with the end of the central mandrel (12 ) of the male part (M) during the introduction of the latter into the female part (F).
7. Système selon la revendication 6, caractérisé en ce que le guide tubulaire (4) de la partie femelle (F) comporte, en avant du deuxième volet (17), une partie annulaire (5) coopérant à coulissement avec la périphérie du mandrin central (12) de la partie mâle (M). 7. System according to claim 6, characterized in that the tubular guide (4) of the female part (F) comprises, in front of the second flap (17), an annular part (5) cooperating slidingly with the periphery of the central mandrel (12) of the male part (M).
8. Système selon l'une des revendications 2 à 7, caractérisé en ce que la partie femelle (F) comprend, dans le fond du guide tubulaire (4), un élément tubulaire central (6) comportant le clapet (9) de fermeture de la conduite (7) de réception du fluide et formant butée axiale pour la partie mâle. 8. System according to one of claims 2 to 7, characterized in that the female part (F) comprises, in the bottom of the tubular guide (4), a central tubular element (6) comprising the closure valve (9) of the pipe (7) for receiving the fluid and forming an axial stop for the male part.
9. Système selon la revendication 8 dans son rattachement à l'une des revendications 4 à 7, caractérisé en ce que l'un des clapets de fermeture (15 ; 9) est solidaire d'une tige (21) coopérant en butée axiale avec l'autre clapet de fermeture en configuration de connexion du système. 9. System according to claim 8 in its attachment to one of claims 4 to 7, characterized in that one of the closing valves (15; 9) is integral with a rod (21) cooperating in axial abutment with the other closing valve in system connection configuration.
10. Système selon l'une des revendications 2 à 9, caractérisé en ce que l'extrémité du guide tubulaire (4) de la partie femelle (F) est obturable, au repos, par un bouchon amovible (30). 10. System according to one of claims 2 to 9, characterized in that the end of the tubular guide (4) of the female part (F) is closable, at rest, by a removable plug (30).
11. Système selon l'une des revendications précédentes, caractérisé en ce que la partie mâle (M) est configurée en forme de pistolet actionnable manuellement (50). 11. System according to one of the preceding claims, characterized in that the male part (M) is configured in the form of a manually actuated gun (50).
12. Système selon l'une des revendications précédentes, caractérisé en ce que la partie femelle (F) est aménagée dans la carrosserie (52) d'un véhicule automobile. 12. System according to one of the preceding claims, characterized in that the female part (F) is arranged in the bodywork (52) of a motor vehicle.
13. Système selon l'une des revendications précédentes, caractérisé en ce que le fluide est l'hydrogène liquide ou le gaz naturel liquéfié. 13. System according to one of the preceding claims, characterized in that the fluid is liquid hydrogen or liquefied natural gas.
EP04816531A 2004-01-19 2004-12-10 System for connecting the ends of fluid conduits Withdrawn EP1718560A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450095A FR2865260B1 (en) 2004-01-19 2004-01-19 SYSTEM FOR CONNECTING END OF FLUID CONDUIT
PCT/FR2004/050677 WO2005077812A1 (en) 2004-01-19 2004-12-10 System for connecting the ends of fluid conduits

Publications (1)

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EP1718560A1 true EP1718560A1 (en) 2006-11-08

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EP04816531A Withdrawn EP1718560A1 (en) 2004-01-19 2004-12-10 System for connecting the ends of fluid conduits

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US (1) US20070155224A1 (en)
EP (1) EP1718560A1 (en)
JP (1) JP2007523296A (en)
KR (1) KR20060126722A (en)
CN (1) CN1902124A (en)
CA (1) CA2551435A1 (en)
FR (1) FR2865260B1 (en)
WO (1) WO2005077812A1 (en)

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Also Published As

Publication number Publication date
FR2865260B1 (en) 2006-02-17
CA2551435A1 (en) 2005-08-25
US20070155224A1 (en) 2007-07-05
CN1902124A (en) 2007-01-24
KR20060126722A (en) 2006-12-08
FR2865260A1 (en) 2005-07-22
JP2007523296A (en) 2007-08-16
WO2005077812A1 (en) 2005-08-25

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