EP3708900A1 - Connector for pressurised fluid, valve and container comprising such a connector and connection method - Google Patents

Connector for pressurised fluid, valve and container comprising such a connector and connection method Download PDF

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Publication number
EP3708900A1
EP3708900A1 EP20160881.7A EP20160881A EP3708900A1 EP 3708900 A1 EP3708900 A1 EP 3708900A1 EP 20160881 A EP20160881 A EP 20160881A EP 3708900 A1 EP3708900 A1 EP 3708900A1
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EP
European Patent Office
Prior art keywords
valve
circuit
dust
downstream end
upstream
Prior art date
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Granted
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EP20160881.7A
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German (de)
French (fr)
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EP3708900B1 (en
Inventor
Antoine Frenal
Hervé PAOLI
Benjamin Fischer
Morgan Lamiable
Claude Risse
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Publication of EP3708900A1 publication Critical patent/EP3708900A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves

Definitions

  • the invention relates more particularly to a pressurized fluid connection, in particular for storing pressurized gas, the connection being intended to cooperate with an apparatus for filling and / or withdrawing pressurized fluid, the connection comprising a body delimiting a internal circuit for withdrawing and possibly filling fluid, said circuit extending between an upstream end intended to be connected with a pressurized fluid storage volume and a downstream end intended to be connected with a withdrawal device and / or filling with pressurized fluid, the fitting comprising, at the downstream end of the circuit, a dust-proof valve movable relative to the body between a closed position of the downstream end of the circuit and at least one position of opening.
  • An aim of the present invention is to overcome all or part of the drawbacks of the prior art noted above.
  • the valve according to the invention is essentially characterized in that the dust-proof valve is a configured residual pressure valve, when is in the closed position, to maintain a determined minimum pressure in the circuit and allowing gas to be evacuated to the outside in the event of an overpressure in the circuit above a pressure threshold determined relative to the outside.
  • the invention also relates to a valve or a pressurized fluid container, in particular a pressurized gas cylinder or assembly of cylinders, comprising a connector conforming to any one of the characteristics above or below.
  • a pressurized fluid valve comprising a fitting according to any one of the characteristics above or below.
  • the invention also relates to a pressurized fluid container, in particular a pressurized gas cylinder or assembly of cylinders, comprising a connector or a valve conforming to any one of the characteristics above or below.
  • the invention also relates to a method of connecting a withdrawal and / or filling apparatus with the circuit of a connector according to any one of the characteristics above or below, the method using a connected conditioning outlet.
  • the method comprising a step of moving the dust-proof valve upstream to downstream from its closed position to a position opened by the valve pusher, in wherein the valve pusher comprises a seal cooperating with the downstream end of the circuit, and in which, during a first part of the travel stroke of the dust barrier valve towards its open position, the valve actuator and the barrier valve -dust are in sealed contact with the downstream end of the circuit, then, during a second part of the travel stroke of the dust barrier valve towards its open position, the valve pusher remains in sealed contact with the downstream end of the circuit while the dust-proof valve reaches an open position in which the dust-proof valve is no longer in sealed contact with the downstream end of the circuit.
  • the invention may also relate to any alternative device or method comprising any combination of the characteristics above or below within the scope of the claims.
  • the pressurized fluid connection 1 shown in [ Fig. 1 ] is comprising a body 2 delimiting an internal circuit 3 for withdrawing (and possibly filling fluid).
  • This circuit 3 extends between an upstream end 5 intended to be connected with a pressurized fluid storage volume (storage volume of one or more bottles for example) and a downstream end 6 intended to be connected with a apparatus for withdrawing and / or filling pressurized fluid.
  • the connector 1 comprises, at the level of the downstream end 6 of the circuit 3, a dust cover 8 movable relative to the body 2 between a closed position of the downstream end 6 of the circuit 3 and at least one open position (in open position at [ Fig. 1 ]).
  • connection 1 comprises an isolation valve 7 arranged in series with the dust protection valve 8 in the internal circuit 3, the isolation valve 7 being arranged upstream of the dust protection valve 8 (the upstream-val direction is reference to the direction of fluid flow in circuit 3 from the upstream end to the downstream end 6.
  • each valve 8, 7 is biased by a return member such as a respective spring 14, 10 towards a closed position (towards a respective seat for example).
  • the dust cover 8 is in the open position ("O") under the action of a capet pusher pin 23 of a conditioning device or outlet 33.
  • the dust cover 8 is a residual pressure valve configured, when it is in the closed position, to maintain a determined minimum pressure. in circuit 3 (tight closing) and allowing gas to be evacuated to the outside in the event of an overpressure in circuit 3 above a pressure threshold determined with respect to the outside (controlled non-tight closing).
  • the dust cover 8 comprises a deformable seal 28 which, in the closed position of the dust cover 8, is in sealed contact against the body 2 when the pressure differential between the circuit 3 and the outside is lower than the determined pressure threshold (cf. [ Fig. 3 ]). In this closed position, the seal 28 may deform / move and allow fluid to be evacuated to the outside in the event of excess pressure in circuit 3 above the threshold (cf. [ Fig. 4 ]).
  • This pressure threshold determined with respect to the outside may be between 200mbar and 10bar (or more in particular 15, bar, 20bar or more), in particular between 200mbar and six to eight bar, for example at a value between 1 to 6bar .
  • This provides the advantage of maintaining a residual pressure in the connection 1 or valve regardless of the steps of connection to the valve.
  • this makes it possible to perform a residual pressure maintenance function that does not present a hissing problem or risk of non-reclosing by the absence of dynamic sealing with a valve opening member.
  • this allows a self-regulated residual pressure to be maintained, the maximum value of which does not degrade the ergonomics of the connection (residual pressure multiplied by the bearing surface being less than the necessary connection force).
  • An advantage of keeping the residual pressure is to prevent any risk of ingress of pollution coming from the outside in addition to the protection generated by the seal 28 and the dust-proof valve 8 itself.
  • the dust-proof valve 8 may include an annular peripheral seal 28 forming a lip which rests in a sealed manner on the edge of the inlet orifice of the circuit 3. This lip is liable to deform and / or to become distorted. move to break the seal with the body 2 of the valve at the inlet.
  • the seal 28 comprises a first annular end integral with the dust-shielding valve 8 (in a circular groove of the valve) and a second end forming the lip, this second end of the seal 28 being located downstream of the first end of the seal. 28 (cf. for example [ Fig. 3 ]).
  • the seal 28 may be separate from the piston but could of course be overmolded and / or vulcanized on the piston.
  • the downstream end 6 of the circuit 3 opens out at a downstream end of the connector 1 at the level of a cylindrical bore.
  • the dust-proof valve 8 comprising a piston movable in the bore and equipped with a groove accommodating the seal 28. This seal 28 being in sealed contact with the bore when the dust-proof valve 8 is in the closed position (cf. [ Fig. 3 ]).
  • the dust-barrier valve 8 is no longer in sealed contact with the bore of the downstream end of the circuit (cf. [ Fig. 6 ]).
  • the dust-proof valve 8 is in the closed position (storage position for example) in which it is preferably flush with the end surface of the connector 1.
  • the dust-proof valve 8 comprises a peripheral O-ring 28 forming a lip which comes to rest sealingly on the circular edge of the orifice formed in the body 2 of the valve. For example, the lip faces upwards (towards the outlet of tap 2).
  • the contact between the gasket 28 of the dust barrier 8 and the bore delimiting its passage opening provides a gas seal which ensures that the upstream chamber of the dust barrier 8 is not vented.
  • the seal 28 may deform under the effect of the pressure inside (upstream of the dust barrier 8) so as to expel the excess pressure to the outside.
  • the dust-proof valve 8 is in the closed position but ensuring an evacuation of excess gas to the outside of the valve 2 (storage position with pressure evacuation).
  • the end of the seal 28 is pushed back by the excess upstream pressure, the seal is broken to allow only the gas to escape.
  • the seal 28 returns to its sealed closed position previously described.
  • this measured opening is only possible in the direction of discharge and under certain pressure differential conditions between the interior (between the upstream side of the dust barrier 8) and the exterior.
  • the seal 28 is sufficiently elastic to return to its initial position after having released the excess pressure, which makes it possible to recover the gas tightness.
  • the pressure gradient between the gas contained in the chamber and the outside ensures that the volume of the chamber is not contaminated in the ambient air.
  • the dust-proof valve 8 is pushed upstream (towards the inside of the valve 2) by a valve pusher pin 23 which may include a peripheral seal 123 ensuring a seal with the circuit 3 at the level of the 'inlet port.
  • the dust-proof valve 8 can still have a seal with the body 2 of the valve.
  • the gasket 28 of the dust cover 8 can be positioned on the piston such that the contact between the gasket 28 of the dust cover 8 and the bore n 'is broken only after the sealed contact is established between the seal 123 of the axis 23 and the bore of the body 2.
  • the connection of a member 33 carrying the valve pusher 23 on the connector 1 does not reset air the volume of gas in the chamber located upstream of the dust barrier valve 8.
  • a module 33 (valve or other) is connected in a sealed manner at the level of the downstream end 6 and this module 33 is equipped with a residual pressure valve (RPV) function, then there is a positive pressure in the connections. even after purging circuit 3 downstream.
  • RSV residual pressure valve
  • the position of the piston of the dust barrier valve 8, the stroke of the valve pusher 23 present in the valve 2 and the position of the various seals (28 and 123) are preferably such that the seal 28 of the valve 8 protects dust is never in contact with the bore delimiting the orifice or with the valve body. This makes it possible to avoid trapping gas under pressure.
  • the gas When gas is withdrawn (from upstream to downstream) the gas can flow downstream from the dust-barrier valve 8, for example by means of one or more orifices present in or around the valve pusher 23 or any other suitable part.
  • orifices can be provided radially, in particular in the case where the activation of the opening / closing function is done independently.
  • a drilling coaxial with the valve pusher axis 23 may be provided for the transit of gas.
  • the reverse movement occurs in the direction of closure.
  • the seal 28 of the dust shield 8 and the seal 123 of the shaft 23 can be positioned such that the contact between the seal 28 of the dust shield 8 and the bore 2 is established before the sealed contact between the seal 123 of the valve pusher shaft 23 and the bore of the dust cover is not lost. This also makes it possible to avoid contaminating the circuit upstream of the dust-proof valve 8.
  • the residual pressure valve function is therefore present on the first valve 2 thanks to the dust barrier valve 8 as described below. -above.
  • the residual pressure valve function can be performed by another residual pressure valve which is housed in the second valve in fluid connection with the circuit of the first valve. This allows to avoid the resonance of an oscillator in the system.
  • This dust protection valve 8 forming a residual pressure valve can be provided on other fittings or taps and in particular on a fitting or tap 1 comprising three valves in series as illustrated by way of example in [ Fig. 2 ].
  • the connector 1 may comprise, arranged in series from upstream to downstream in the internal circuit 3 between the upstream end 5 and the downstream end 6: an upstream valve 11, the isolation valve 7 and the valve 8 dust cover.
  • the two valves of the embodiment of the [ Fig. 1 ] or the three valves of the embodiment of [ Fig. 2 ] can be chain operated by moving the valve 8 by dust as detailed in the document FR3033386 A1 .
  • the dust-barrier valve 8 can be moved from its downstream closed position to a first determined upstream position called “contactless" opening the downstream end of the circuit 3, in which the upstream end 108 of the dust-barrier valve 8 does not push. the isolation valve 7 (no contact with the isolation valve 7).
  • This position can be obtained for example by connecting to the downstream end of the body 2 of the valve 1 a tool 33 for filling and / or drawing off.
  • the tool 33 includes a member 23 for pushing the movable valve which slightly moves the valve 8 by dust from downstream to upstream.
  • the valve pusher 23 can be moved, for example, via a pivoting lever which can be actuated manually, hydraulically, pneumatically, electrically or by any other suitable actuator.
  • this contactless position has many advantages.
  • this configuration in which only the dust-proof valve 8 is open makes it possible to connect in a sealed manner a filling and / or drawing-off tool to the downstream end of the valve 2 with a constant force whatever the pressure level in upstream of the isolation valve 7.
  • the pressure upstream of the dust-barrier valve 8 may be the same as outside the valve (ambient atmospheric pressure), in particular when the dust-barrier valve 8 closes the downstream end 6 in a non-watertight manner. of circuit 3.
  • this contactless configuration also allows a filling / withdrawing tool to carry out leak tests of the isolation valve 7.
  • the filling / withdrawing tool is connected in a sealed manner to the end 6 of the valve and can be configured to create a vacuum (depression) in the downstream part of the circuit 3 (downstream of the isolation valve 7). This makes it possible to carry out one or more tests to check / qualify the level of tightness of the valve 7 and of the tool, for example before subjecting the mechanism to high pressures.
  • the dust-barrier valve 8 can be moved further upstream in a second determined upstream position called "contact" opening the downstream end 6 of the circuit 3 and in which the upstream end 108 of the dust-barrier valve 8 pushes. a downstream end of the isolation valve 7. The isolation valve 7 is then moved by contact out of its seat 9 to a first upstream opening position of the circuit 3 in which the isolation valve 7 does not push the third upstream valve 11.
  • the valve 1 can include a calibrated orifice 4 defining a determined opening allowing a passage of gas between the upstream and downstream of the upstream valve 11 when the latter is in its position for closing the circuit 3
  • This determined opening of the calibrated orifice 4 is however less than the opening produced when the upstream valve 11 is in its open position of the circuit 3. In this case, in this position, the pressurized fluid can escape. towards the downstream end according to the flow rate imposed by the calibrated orifice 4.
  • the first two valves 8, 7 are opened mechanically while the third upstream valve 11 is in the closed position, but a calibrated flow rate can still escape.
  • This configuration corresponds to a start of withdrawal via a progressive opening of the circuit making it possible to control a progressive rise in pressure downstream.
  • the dust-barrier valve 8 can be moved even further upstream in a third determined upstream position opening the circuit 3.
  • the upstream end 108 of the dust-barrier valve 8 pushes a downstream end of the valve 7 of movable isolation to move by contact the isolation valve 7 out of its seat 9 to a second upstream opening position of the circuit 3.
  • the isolation valve 7 pushes the upstream valve 11 into an open position complete of the upstream end of the circuit 3. That is to say that, in this case, the three valves 8, 7, 11 are completely open allowing maximum circulation of fluid.
  • This configuration corresponds to a state of filling or drawing off of a reservoir 40 through the tap 1.
  • the possible calibrated orifice 4 delimits an opening having a first determined section S1 while the opening produced when the upstream valve 11 is in its open position of the circuit 3 has a second determined section S2 so that the ratio between the first section S1 and the second section S2 is between 1/100 and 1/20 and preferably 1/80 and 1/30.
  • the passage (first opening section S1) of the calibrated orifice can be obtained by altering the sealing line between the upstream valve 11 and its seat 15 by broaching, a saw cut or other tool on the valve or on his seat.
  • the valve 11 may not be perfectly cylindrical (faceted ball, porous ball, or of any other shape to allow gas to pass with a limited flow).
  • Another alternative or cumulative solution is to place a calibrated orifice in parallel with this upstream valve 11, to ensure the limited passage of gas.
  • this calibrated orifice can pass through the body of the upstream valve 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Raccord de fluide sous pression, notamment pour un stockage de gaz sous pression, le raccord (1) étant destiné à coopérer avec un appareil de remplissage et/ou de soutirage de fluide sous pression, le raccord (1) comprenant un corps (2) délimitant un circuit (3) interne de soutirage et éventuellement de remplissage de fluide, ledit circuit (3) s'étendant entre une extrémité amont (5) destinée à être mise en relation avec un volume de stockage de fluide sous pression et une extrémité aval (6) destinée à être reliée avec un appareil de soutirage et/ou de remplissage de fluide sous pression, le raccord (1) comprenant, au niveau de l'extrémité (6) aval du circuit (3), un clapet (8) pare-poussière mobile relativement au corps (2) entre une position de fermeture de l'extrémité (6) aval du circuit (3) et au moins une position d'ouverture, caractérisé en ce que le clapet (8) pare-poussière est un clapet de pression résiduelle configuré, lorsqu'il est en position fermée, pour maintenir une pression minimale déterminée dans le circuit (3) et permettant une évacuation de gaz vers l'extérieur en cas de surpression dans le circuit (3) au-dessus d'un seuil de pression déterminé par rapport à l'extérieur.Pressurized fluid connection, in particular for storing pressurized gas, the connection (1) being intended to cooperate with an apparatus for filling and / or withdrawing pressurized fluid, the connection (1) comprising a body (2) delimiting an internal circuit (3) for withdrawing and possibly filling fluid, said circuit (3) extending between an upstream end (5) intended to be placed in connection with a pressurized fluid storage volume and a downstream end (6) intended to be connected with a device for withdrawing and / or filling pressurized fluid, the connection (1) comprising, at the level of the downstream end (6) of the circuit (3), a valve (8) dust cover movable relative to the body (2) between a closed position of the downstream end (6) of the circuit (3) and at least one open position, characterized in that the dust cover valve (8) is a residual pressure valve configured, when in the closed position, to maintain a pressure minimum pressure determined in the circuit (3) and allowing gas to be evacuated to the outside in the event of an overpressure in the circuit (3) above a pressure threshold determined with respect to the outside.

Description

L'invention concerne plus particulièrement un raccord de fluide sous pression, notamment pour un stockage de gaz sous pression, le raccord étant destiné à coopérer avec un appareil de remplissage et/ou de soutirage de fluide sous pression, le raccord comprenant un corps délimitant un circuit interne de soutirage et éventuellement de remplissage de fluide, ledit circuit s'étendant entre une extrémité amont destinée à être mise en relation avec un volume de stockage de fluide sous pression et une extrémité aval destinée à être reliée avec un appareil de soutirage et/ou de remplissage de fluide sous pression, le raccord comprenant, au niveau de l'extrémité aval du circuit, un clapet pare-poussière mobile relativement au corps entre une position de fermeture de l'extrémité aval du circuit et au moins une position d'ouverture.The invention relates more particularly to a pressurized fluid connection, in particular for storing pressurized gas, the connection being intended to cooperate with an apparatus for filling and / or withdrawing pressurized fluid, the connection comprising a body delimiting a internal circuit for withdrawing and possibly filling fluid, said circuit extending between an upstream end intended to be connected with a pressurized fluid storage volume and a downstream end intended to be connected with a withdrawal device and / or filling with pressurized fluid, the fitting comprising, at the downstream end of the circuit, a dust-proof valve movable relative to the body between a closed position of the downstream end of the circuit and at least one position of opening.

On connait des raccords ou robinets munis d'un clapet-pare poussière. Lorsqu'il est dans sa position fermée, ce type de clapet ferme l'orifice d'accès au circuit interne. Le clapet pare-poussière affleure généralement l'extrémité du raccord pour éviter l'intrusion de poussière. Cf. par exemple FR2311989 A2 . Dans certaines configuration le clapet pare-poussière ne peut empêcher la contamination du circuit interne et du récipient relié au raccord. En effet, en fonction des configurations d'ouverture du clapet pare-poussière et éventuellement d'autres clapets et du différentiel de pression avec l'extérieur un gaz polluant peut venir contaminer le circuit et le récipient relié au raccord. Une solution connue consiste à prévoir un clapet de pression résiduelle en amont dans le raccord (cf. FR3033386 A1 ). Cette solution performante peut augmenter la complexité du raccord.We know of fittings or taps equipped with a dust protection valve. When in its closed position, this type of valve closes the access port to the internal circuit. The dust cover is usually flush with the end of the fitting to prevent dust intrusion. See for example FR2311989 A2 . In some configurations, the dust protection valve cannot prevent contamination of the internal circuit and of the receptacle connected to the fitting. Indeed, depending on the opening configurations of the dust-proof valve and possibly other valves and the pressure differential with the outside, a polluting gas can come and contaminate the circuit and the receptacle connected to the connector. A known solution consists of providing a residual pressure valve upstream in the connection (cf. FR3033386 A1 ). This efficient solution can increase the complexity of the connection.

Un but de la présente invention est de pallier tout ou partie des inconvénients de l'art antérieur relevés ci-dessus.An aim of the present invention is to overcome all or part of the drawbacks of the prior art noted above.

A cette fin, le robinet selon l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisé en ce que le clapet pare-poussière est un clapet de pression résiduelle configuré, lorsqu'il est en position fermée, pour maintenir une pression minimale déterminée dans le circuit et permettant une évacuation de gaz vers l'extérieur en cas de surpression dans le circuit au-dessus d'un seuil de pression déterminé par rapport à l'extérieur.To this end, the valve according to the invention, moreover in accordance with the generic definition given in the preamble above, is essentially characterized in that the dust-proof valve is a configured residual pressure valve, when is in the closed position, to maintain a determined minimum pressure in the circuit and allowing gas to be evacuated to the outside in the event of an overpressure in the circuit above a pressure threshold determined relative to the outside.

Par ailleurs, des modes de réalisation de l'invention peuvent comporter l'une ou plusieurs des caractéristiques suivantes :

  • le raccord comprend un joint déformable situé sur le clapet pare-poussière, en position fermée du clapet pare-poussière, le joint étant en contact étanche contre le corps lorsque le différentiel de pression entre le circuit et l'extérieur est inférieur au seuil de pression, dans cette position, le joint) se déformant et autorisant une évacuation de fluide vers l'extérieur en cas d'excès de pression dans le circuit au-dessus du seuil,
  • le clapet pare-poussière est configuré pour assurer, en position fermée, une évacuation de gaz en ouvrant l'extrémité aval du circuit en cas de surpression dans le circuit au-dessus d'un seuil de pression déterminé par rapport à l'extérieur compris entre 200mbar et 20bar, notamment entre 200mbar et dix bar, par exemple à une valeur comprise entre 1 à 6bar,
  • le clapet pare poussière comprend un joint périphérique formant une lèvre qui vient s'appuyer de façon étanche sur la bordure l'orifice d'entrée, la lèvre étant susceptible de se déformer et/ou se déplacer pour rompre l'étanchéité avec le corps du robinet au niveau de l'entrée,
  • le joint comprend une première extrémité solidaire du clapet pare-poussière et une seconde extrémité formant la lèvre, ladite seconde extrémité du joint étant située en aval de la première extrémité du joint,
  • l'extrémité aval du circuit débouche au niveau d'une extrémité aval du raccord au niveau d'un alésage cylindrique, le clapet pare-poussière comportant un piston mobile dans l'alésage et équipé d'une gorge accueillant le joint, le joint étant en contact étanche avec l'alésage lorsque le clapet pare-poussière est en position fermée,
  • dans une position ouverte déterminée du clapet pare-poussière, le clapet pare-poussière n'est plus en contact étanche avec l'alésage de l'extrémité aval du circuit,
  • le clapet pare-poussière est sollicité vers sa position fermée par un organe de rappel,
  • le raccord comprend un clapet d'isolement disposé en série avec le clapet pare-poussière dans le circuit interne, le clapet d'isolement étant disposé en amont du clapet pare-poussière,
  • le raccord comprend, disposés en série de l'amont vers l'aval dans le circuit interne entre l'extrémité amont et l'extrémité aval: un clapet amont, le clapet d'isolement et le clapet pare-poussière,
  • le raccord ou robinet comprend un orifice calibré définissant une ouverture déterminée autorisant un passage de gaz entre l'amont et l'aval du clapet amont lorsque ce dernier est dans sa position de fermeture du circuit, ladite ouverture déterminée de l'orifice calibré étant inférieure à l'ouverture produite lorsque le clapet amont est dans sa position d'ouverture du circuit,
  • le clapet d'isolement est mobile relativement à un siège entre une position aval de fermeture du circuit et au moins une position amont d'ouverture du circuit, ledit clapet d'isolement étant sollicité vers sa position aval par un organe de rappel, le clapet pare-poussière comprenant une extrémité amont et étant mobile relativement au corps entre une position aval de fermeture de l'extrémité amont du circuit et au moins une position amont d'ouverture de l'extrémité aval du circuit, le clapet amont étant mobile relativement à un siège entre une position aval de fermeture du circuit et au moins une position amont d'ouverture du circuit, le clapet amont étant sollicité vers sa position aval de fermeture par un organe de rappel,
  • le clapet pare-poussière est déplaçable de sa position aval de fermeture vers: une première position amont déterminée dite « sans contact » ouvrant l'extrémité aval du circuit, dans laquelle l'extrémité aval du clapet pare-poussière ne pousse pas le clapet d'isolement, ou, une seconde position amont déterminée dite « de contact » ouvrant l'extrémité aval du circuit, dans laquelle l'extrémité amont du clapet pare-poussière vient pousser une extrémité aval du clapet d'isolement mobile pour déplacer par contact le clapet d'isolement hors de son siège vers une première position amont d'ouverture du circuit dans laquelle le clapet d'isolement ne pousse pas le clapet amont, ou, une troisième position amont déterminée ouvrant l'extrémité aval du circuit, dans laquelle l'extrémité amont du clapet pare-poussière vient pousser une extrémité aval du clapet d'isolement mobile pour déplacer le clapet d'isolement hors de son siège vers une seconde position amont d'ouverture du circuit dans laquelle le clapet d'isolement pousse le clapet amont dans sa position d'ouverture de l'extrémité amont du circuit,
  • l'orifice calibré est délimité au moins en partie par le clapet amont ou un élément de ce dernier,
  • l'orifice calibré est logé dans le clapet amont,
  • l'orifice calibré comprend une obturateur telle qu'une bille poussé vers un siège par un organe de rappel, l'obturateur étant en appui non étanche sur le siège,
  • dans sa position amont dite « de remplissage» le clapet pare-poussière vient pousser une extrémité aval du clapet d'isolement mobile et déplace par contact le clapet d'isolement dans une position déterminée d'ouverture dans laquelle le clapet d'isolement pousse à son tour le clapet amont dans une position d'ouverture de l'extrémité aval du circuit pour autoriser le transfert de fluide d'aval vers l'amont dans le récipient,
  • le clapet pare-poussière est déplacé vers l'amont par une action mécanique d'une extrémité d'un pousse-clapet mobile appartenant à la prise de conditionnement.
Furthermore, embodiments of the invention may include one or more of the following characteristics:
  • the fitting includes a deformable seal located on the dust protection valve, in the closed position of the dust protection valve, the seal being in sealed contact against the body when the pressure differential between the circuit and the outside is below the pressure threshold , in this position, the seal) deforming and allowing fluid to be evacuated to the outside in the event of excess pressure in the circuit above the threshold,
  • the dust-proof valve is configured to ensure, in the closed position, a gas evacuation by opening the downstream end of the circuit in the event of overpressure in the circuit above a pressure threshold determined with respect to the outside included between 200mbar and 20bar, in particular between 200mbar and ten bar, for example at a value between 1 to 6bar,
  • the dust-proof valve comprises a peripheral seal forming a lip which rests in a sealed manner on the border of the inlet orifice, the lip being capable of deforming and / or moving to break the seal with the body of the tap at the entrance,
  • the seal comprises a first end integral with the dust-proof valve and a second end forming the lip, said second end of the seal being located downstream of the first end of the seal,
  • the downstream end of the circuit opens out at a downstream end of the fitting at the level of a cylindrical bore, the dust-proof valve comprising a piston movable in the bore and equipped with a groove accommodating the seal, the seal being in sealed contact with the bore when the dust-proof valve is in the closed position,
  • in a determined open position of the dust barrier valve, the dust barrier valve is no longer in sealed contact with the bore of the downstream end of the circuit,
  • the dust-proof valve is biased towards its closed position by a return member,
  • the connection comprises an isolation valve arranged in series with the dust protection valve in the internal circuit, the isolation valve being arranged upstream of the dust protection valve,
  • the fitting comprises, arranged in series from upstream to downstream in the internal circuit between the upstream end and the downstream end: an upstream valve, the isolation valve and the dust-proof valve,
  • the connection or valve comprises a calibrated orifice defining a determined opening allowing a passage of gas between the upstream and downstream side of the upstream valve when the latter is in its closed position of the circuit, said determined opening of the calibrated orifice being less to the opening produced when the upstream valve is in its circuit opening position,
  • the isolation valve is movable relative to a seat between a downstream closed position of the circuit and at least one upstream open position of the circuit, said isolation valve being biased towards its downstream position by a return member, the valve dust shield comprising an upstream end and being movable relative to the body between a downstream closed position of the upstream end of the circuit and at least one upstream open position of the downstream end of the circuit, the upstream valve being movable relative to a seat between a downstream closed position of the circuit and at least one upstream opening position of the circuit, the upstream valve being urged towards its downstream closed position by a return member,
  • the dust-proof valve can be moved from its downstream closed position to: a first determined upstream position called "contactless" opening the downstream end of the circuit, in which the downstream end of the dust-proof valve does not push the valve d 'isolation, or, a second determined upstream position called "contact" opening the downstream end of the circuit, in which the upstream end of the dust-barrier valve pushes a downstream end of the movable isolation valve to move by contact the isolation valve out of its seat towards a first upstream opening position of the circuit in which the isolation valve does not push the upstream valve, or, a third determined upstream position opening the downstream end of the circuit, in which the 'the upstream end of the dust-proof valve pushes a downstream end of the movable isolation valve to move the isolation valve out of its seat towards a second upstream opening position of the circuit in which the isolation valve pushes the upstream valve into its open position at the upstream end of the circuit,
  • the calibrated orifice is delimited at least in part by the upstream valve or an element of the latter,
  • the calibrated orifice is housed in the upstream valve,
  • the calibrated orifice comprises a shutter such as a ball pushed towards a seat by a return member, the shutter resting non-tightly on the seat,
  • in its so-called “filling” upstream position, the dust-barrier valve pushes a downstream end of the mobile isolation valve and moves the isolation valve by contact in a determined opening position in which the isolation valve in turn pushes the upstream valve into an open position of the downstream end of the circuit to allow the transfer of fluid from downstream to upstream in the container,
  • the dust-proof valve is moved upstream by a mechanical action of one end of a movable valve pusher belonging to the packaging outlet.

L'invention concerne également un robinet ou un récipient de fluide sous pression, en particulier bouteille ou ensemble de bouteilles de gaz sous pression, comprenant un raccord conforme à l'une quelconque des caractéristiques ci-dessus ou ci-dessous. L'invention concerne également un robinet pour fluide sous pression comprenant un raccord selon l'une quelconque des caractéristiques ci-dessus ou ci-dessous.The invention also relates to a valve or a pressurized fluid container, in particular a pressurized gas cylinder or assembly of cylinders, comprising a connector conforming to any one of the characteristics above or below. The invention also relates to a pressurized fluid valve comprising a fitting according to any one of the characteristics above or below.

L'invention concerne également un récipient de fluide sous pression, en particulier bouteille ou ensemble de bouteilles de gaz sous pression, comprenant un raccord ou un robinet conforme à l'une quelconque des caractéristiques ci-dessus ou ci-dessous. L'invention concerne également un procédé de raccordement d'un appareil de soutirage et/ou de remplissage avec le circuit d'un raccord selon l'une quelconque des caractéristiques ci-dessus ou ci-dessous, le procédé utilisant une prise de conditionnement connectée mécaniquement au corps du raccord de façon amovible et possédant un pousse-clapet, le procédé comportant une étape de déplacement du clapet pare-poussière de l'amont vers l'aval de sa position fermée vers une position ouverte par le pousse-clapet, dans lequel le pousse-clapet comprend un joint d'étanchéité coopérant avec l'extrémité aval du circuit, et dans lequel, pendant une première partie de la course de déplacement du clapet pare poussière vers sa position ouverte, le pousse-clapet et le clapet pare-poussière sont en contact étanche avec l'extrémité aval du circuit, puis, pendant une seconde partie de la course de déplacement du clapet pare poussière vers sa position ouverte, le pousse-clapet reste en contact étanche avec l'extrémité aval du circuit tandis que le clapet pare-poussière atteint une position ouverte dans laquelle le clapet pare-poussière n'est plus en contact étanche avec l'extrémité aval du circuit.The invention also relates to a pressurized fluid container, in particular a pressurized gas cylinder or assembly of cylinders, comprising a connector or a valve conforming to any one of the characteristics above or below. The invention also relates to a method of connecting a withdrawal and / or filling apparatus with the circuit of a connector according to any one of the characteristics above or below, the method using a connected conditioning outlet. mechanically to the body of the coupling removably and having a valve pusher, the method comprising a step of moving the dust-proof valve upstream to downstream from its closed position to a position opened by the valve pusher, in wherein the valve pusher comprises a seal cooperating with the downstream end of the circuit, and in which, during a first part of the travel stroke of the dust barrier valve towards its open position, the valve actuator and the barrier valve -dust are in sealed contact with the downstream end of the circuit, then, during a second part of the travel stroke of the dust barrier valve towards its open position, the valve pusher remains in sealed contact with the downstream end of the circuit while the dust-proof valve reaches an open position in which the dust-proof valve is no longer in sealed contact with the downstream end of the circuit.

L'invention peut concerner également tout dispositif ou procédé alternatif comprenant toute combinaison des caractéristiques ci-dessus ou ci-dessous dans le cadre des revendications.The invention may also relate to any alternative device or method comprising any combination of the characteristics above or below within the scope of the claims.

D'autres particularités et avantages apparaîtront à la lecture de la description ci-après, faite en référence aux figures dans lesquelles :

  • [Fig. 1] représente une vue en coupe, schématique et partielle, illustrant la structure d'un raccord ou robinet selon un premier exemple de réalisation de l'invention à deux clapets dans une première configuration (clapet pare-poussière ouvert et clapet d'isolation fermé),
  • [Fig. 2] représente une vue en coupe, schématique et partielle, illustrant la structure d'un raccord ou robinet monté sur un récipient et selon un deuxième exemple de réalisation de l'invention à trois clapets dans une configuration fermée (trois clapets e série fermés),
  • [Fig. 3] représente une vue en coupe, schématique et partielle, d'un détail d'un raccord ou robinet illustrant une réalisation possible d'un clapet pare-poussière dans une première configuration fermée,
  • [Fig. 4] représente une vue similaire à celle de [Fig. 3] dans laquelle le clapet pare-poussière est dans une seconde configuration fermée mais assurant une régulation de pression,
  • [Fig. 5] représente une vue similaire à celle de [Fig. 3] dans laquelle le clapet pare-poussière est déplacé de sa première configuration fermée vers une configuration ouverte via un axe pousse-clapet,
  • [Fig. 6] représente une vue similaire à celle de [Fig. 5] dans laquelle le clapet pare-poussière est dans une configuration ouverte sous l'action de l'axe pousse-clapet,
Other features and advantages will become apparent on reading the description below, given with reference to the figures in which:
  • [ Fig. 1 ] shows a sectional view, schematic and partial, illustrating the structure of a fitting or valve according to a first embodiment of the invention with two valves in a first configuration (dust-proof valve open and isolation valve closed) ,
  • [ Fig. 2 ] shows a sectional view, schematic and partial, illustrating the structure of a connector or valve mounted on a container and according to a second embodiment of the invention with three valves in a closed configuration (three valves e series closed),
  • [ Fig. 3 ] shows a sectional view, schematic and partial, of a detail of a fitting or valve illustrating a possible embodiment of a dust protection valve in a first closed configuration,
  • [ Fig. 4 ] represents a view similar to that of [ Fig. 3 ] in which the dust-proof valve is in a second closed configuration but providing pressure regulation,
  • [ Fig. 5 ] represents a view similar to that of [ Fig. 3 ] in which the dust cover is moved from its first closed configuration to an open configuration via a valve pusher axis,
  • [ Fig. 6 ] represents a view similar to that of [ Fig. 5 ] in which the dust protection valve is in an open configuration under the action of the valve pusher shaft,

Le raccord 1 de fluide sous pression illustré à la [Fig. 1] est comprenant un corps 2 délimitant un circuit 3 interne de soutirage (et éventuellement de remplissage de fluide). Ce circuit 3 s'étend entre une extrémité amont 5 destinée à être mise en relation avec un volume de stockage de fluide sous pression (volume de stockage d'un ou plieurs bouteilles par exemple) et une extrémité aval 6 destinée à être reliée avec un appareil de soutirage et/ou de remplissage de fluide sous pression.The pressurized fluid connection 1 shown in [ Fig. 1 ] is comprising a body 2 delimiting an internal circuit 3 for withdrawing (and possibly filling fluid). This circuit 3 extends between an upstream end 5 intended to be connected with a pressurized fluid storage volume (storage volume of one or more bottles for example) and a downstream end 6 intended to be connected with a apparatus for withdrawing and / or filling pressurized fluid.

Le raccord 1 comprend, au niveau de l'extrémité 6 aval du circuit 3, un clapet 8 pare-poussière mobile relativement au corps 2 entre une position de fermeture de l'extrémité 6 aval du circuit 3 et au moins une position d'ouverture (en position ouverte à la [Fig. 1]).The connector 1 comprises, at the level of the downstream end 6 of the circuit 3, a dust cover 8 movable relative to the body 2 between a closed position of the downstream end 6 of the circuit 3 and at least one open position (in open position at [ Fig. 1 ]).

Dans l'exemple de la [Fig. 1] le raccord 1 comprend un clapet 7 d'isolement disposé en série avec le clapet 8 pare-poussière dans le circuit 3 interne, le clapet 7 d'isolement étant disposé en amont du clapet 8 pare-poussière (la direction amont-val fait référence au sens d'écoulement du fluide dans le circuit 3 de l'extrémité amont vers l'extrémité aval 6.In the example of [ Fig. 1 ] the connection 1 comprises an isolation valve 7 arranged in series with the dust protection valve 8 in the internal circuit 3, the isolation valve 7 being arranged upstream of the dust protection valve 8 (the upstream-val direction is reference to the direction of fluid flow in circuit 3 from the upstream end to the downstream end 6.

Comme illustré, chaque clapet 8, 7 est sollicité par un organe de rappel tel qu'un ressort 14, 10 respectif vers une position fermée (vers un siège respectif par exemple).As illustrated, each valve 8, 7 is biased by a return member such as a respective spring 14, 10 towards a closed position (towards a respective seat for example).

Dans l'exemple de la [Fig. 1] le clapet 8 pare-poussière est en position ouverte (« O ») sous l'action d'un axe pousse-capet 23 d'un appareil ou prise 33 de conditionnement.In the example of [ Fig. 1 ] the dust cover 8 is in the open position ("O") under the action of a capet pusher pin 23 of a conditioning device or outlet 33.

Selon une particularité avantageuse, le clapet 8 pare-poussière est un clapet de pression résiduelle configuré, lorsqu'il est en position fermée, pour maintenir une pression minimale déterminée dans le circuit 3 (fermeture étanche) et permettant une évacuation de gaz vers l'extérieur en cas de surpression dans le circuit 3 au-dessus d'un seuil de pression déterminé par rapport à l'extérieur (fermeture non étanche contrôlée).According to an advantageous feature, the dust cover 8 is a residual pressure valve configured, when it is in the closed position, to maintain a determined minimum pressure. in circuit 3 (tight closing) and allowing gas to be evacuated to the outside in the event of an overpressure in circuit 3 above a pressure threshold determined with respect to the outside (controlled non-tight closing).

Comme illustré aux [Fig. 3], [Fig. 4], [Fig. 5] et [Fig. 6], de préférence, le clapet 8 pare-poussière comprend un joint 28 déformable qui, en position fermée du clapet 8 pare-poussière, est en contact étanche contre le corps 2 lorsque le différentiel de pression entre le circuit 3 et l'extérieur est inférieur au seuil de pression déterminé (cf. [Fig. 3]). Dans cette position fermée, le joint 28 peut se déformer/se déplacer et autorisant une évacuation de fluide vers l'extérieur en cas d'excès de pression dans le circuit 3 au-dessus du seuil (cf. [Fig. 4]).As illustrated in [ Fig. 3], [Fig. 4 ], [ Fig. 5 ] and [ Fig. 6 ], preferably, the dust cover 8 comprises a deformable seal 28 which, in the closed position of the dust cover 8, is in sealed contact against the body 2 when the pressure differential between the circuit 3 and the outside is lower than the determined pressure threshold (cf. [ Fig. 3 ]). In this closed position, the seal 28 may deform / move and allow fluid to be evacuated to the outside in the event of excess pressure in circuit 3 above the threshold (cf. [ Fig. 4 ]).

Ce seuil de pression déterminé par rapport à l'extérieur peut être compris entre 200mbar et 10bar (ou plus notamment 15,bar, 20bar ou plus), notamment entre 200mbar et six à huit bar, par exemple à une valeur comprise entre 1 à 6bar.This pressure threshold determined with respect to the outside may be between 200mbar and 10bar (or more in particular 15, bar, 20bar or more), in particular between 200mbar and six to eight bar, for example at a value between 1 to 6bar .

Ceci procure l'avantage de maintenir une pression résiduelle dans le raccord 1 ou robinet quelle que soit les étapes de connexion au robinet. De plus, ceci permet de réaliser une fonction de maintien de pression résiduelle ne présentant pas de problème de sifflement ou de risque de non refermeture par l'absence d'étanchéité dynamique avec un organe d'ouverture du clapet. En outre, ceci permet le maintien d'une pression résiduelle autorégulée dont la valeur maximale ne dégrade pas l'ergonomie de la connexion (pression résiduelle multipliée par la surface d'appuie étant inférieure à l'effort nécessaire de de connexion).This provides the advantage of maintaining a residual pressure in the connection 1 or valve regardless of the steps of connection to the valve. In addition, this makes it possible to perform a residual pressure maintenance function that does not present a hissing problem or risk of non-reclosing by the absence of dynamic sealing with a valve opening member. In addition, this allows a self-regulated residual pressure to be maintained, the maximum value of which does not degrade the ergonomics of the connection (residual pressure multiplied by the bearing surface being less than the necessary connection force).

Un avantage de garder de la pression résiduelle est d'interdire tout risque de pénétration de pollution venant de l'extérieur en complément de la protection générée par le joint 28 et clapet 8 pare-poussière lui-même.An advantage of keeping the residual pressure is to prevent any risk of ingress of pollution coming from the outside in addition to the protection generated by the seal 28 and the dust-proof valve 8 itself.

Comme illustré, le clapet 8 pare poussière peut comprendre un joint 28 périphérique annulaire formant une lèvre qui vient s'appuyer de façon étanche sur la bordure l'orifice d'entrée du circuit 3. Cette lèvre est susceptible de se déformer et/ou se déplacer pour rompre l'étanchéité avec le corps 2 du robinet au niveau de l'entrée.As illustrated, the dust-proof valve 8 may include an annular peripheral seal 28 forming a lip which rests in a sealed manner on the edge of the inlet orifice of the circuit 3. This lip is liable to deform and / or to become distorted. move to break the seal with the body 2 of the valve at the inlet.

Par exemple, le joint 28 comprend une première extrémité annulaire solidaire du clapet 8 pare-poussière (dans une gorge circulaire du clapet) et une seconde extrémité formant la lèvre, cette seconde extrémité du joint 28 étant située en aval de la première extrémité du joint 28 (cf. par exemple [Fig. 3]). Le joint 28 peut être distinct du piston mais pourrait bien sûr être surmoulé et/ou vulcanisé sur le piston.For example, the seal 28 comprises a first annular end integral with the dust-shielding valve 8 (in a circular groove of the valve) and a second end forming the lip, this second end of the seal 28 being located downstream of the first end of the seal. 28 (cf. for example [ Fig. 3 ]). The seal 28 may be separate from the piston but could of course be overmolded and / or vulcanized on the piston.

Par exemple, l'extrémité aval 6 du circuit 3 débouche au niveau d'une extrémité aval du raccord 1 au niveau d'un alésage cylindrique. Le clapet 8 pare-poussière comportant un piston mobile dans l'alésage et équipé d'une gorge accueillant le joint 28. Ce joint 28 étant en contact étanche avec l'alésage lorsque le clapet 8 pare-poussière est en position fermée (cf. [Fig. 3]).For example, the downstream end 6 of the circuit 3 opens out at a downstream end of the connector 1 at the level of a cylindrical bore. The dust-proof valve 8 comprising a piston movable in the bore and equipped with a groove accommodating the seal 28. This seal 28 being in sealed contact with the bore when the dust-proof valve 8 is in the closed position (cf. [ Fig. 3 ]).

De préférence, dans une position amont ouverte déterminée du clapet 8 pare-poussière, le clapet 8 pare-poussière n'est plus en contact étanche avec l'alésage de l'extrémité aval du circuit (cf. [Fig. 6]).Preferably, in a determined open upstream position of the dust-barrier valve 8, the dust-barrier valve 8 is no longer in sealed contact with the bore of the downstream end of the circuit (cf. [ Fig. 6 ]).

A la [Fig. 3] le clapet 8 pare-poussière est en position fermée (position de stockage par exemple) dans laquelle il affleure de préférence la surface terminale du raccord 1. Le clapet 8 pare poussière comprend un joint 28 torique périphérique formant une lèvre qui vient s'appuyer de façon étanche sur la bordure circulaire de l'orifice formé dans le corps 2 du robinet. Par exemple, la lèvre est orientée vers le haut (vers la sortie du robinet 2).To the [ Fig. 3 ] the dust-proof valve 8 is in the closed position (storage position for example) in which it is preferably flush with the end surface of the connector 1. The dust-proof valve 8 comprises a peripheral O-ring 28 forming a lip which comes to rest sealingly on the circular edge of the orifice formed in the body 2 of the valve. For example, the lip faces upwards (towards the outlet of tap 2).

Dans cette configuration, le contact entre le joint 28 du clapet 8 pare poussière et l'alésage délimitant son orifice de passage permet une étanchéité au gaz qui assure que la chambre amont du pare poussière 8 n'est pas mise à l'air. Le joint 28 peut se déformer sous l'effet de la pression à l'intérieur (en amont du pare poussière 8) de façon à expulser l'excès de pression vers l'extérieur.In this configuration, the contact between the gasket 28 of the dust barrier 8 and the bore delimiting its passage opening provides a gas seal which ensures that the upstream chamber of the dust barrier 8 is not vented. The seal 28 may deform under the effect of the pressure inside (upstream of the dust barrier 8) so as to expel the excess pressure to the outside.

A la [Fig. 4] le clapet 8 pare-poussière est en position fermée mais assurant une évacuation de gaz en excès vers l'extérieur du robinet 2 (position de stockage avec évacuation de pression). L'extrémité du joint 28 est repoussée par l'excès de pression en amont, l'étanchéité est rompue pour permettre uniquement l'évacuation du gaz. Dès que la pression redescend en dessous du seuil d'ouverture, le joint 28 reprend sa position de fermeture étanche précédemment décrite. Ainsi, cette ouverture mesurée n'est possible que dans le sens d'évacuation et sous certaines conditions de différentiel de pression entre l'intérieur (entre amont du pare poussière 8) et l'extérieur. De préférence, le joint 28 est suffisamment élastique pour revenir dans sa position initiale après avoir évacué l'excès de pression, ce qui permet de recouvrer l'étanchéité au gaz. Le gradient de pression entre le gaz contenue dans la chambre et l'extérieur assure que le volume de la chambre n'est pas contaminé dans l'air ambiant.To the [ Fig. 4 ] the dust-proof valve 8 is in the closed position but ensuring an evacuation of excess gas to the outside of the valve 2 (storage position with pressure evacuation). The end of the seal 28 is pushed back by the excess upstream pressure, the seal is broken to allow only the gas to escape. As soon as the pressure drops below the opening threshold, the seal 28 returns to its sealed closed position previously described. Thus, this measured opening is only possible in the direction of discharge and under certain pressure differential conditions between the interior (between the upstream side of the dust barrier 8) and the exterior. Preferably, the seal 28 is sufficiently elastic to return to its initial position after having released the excess pressure, which makes it possible to recover the gas tightness. The pressure gradient between the gas contained in the chamber and the outside ensures that the volume of the chamber is not contaminated in the ambient air.

A la [Fig. 5] le clapet 8 pare-poussière est repoussé vers l'amont (vers l'intérieur du robinet 2) par un axe 23 pousse-clapet qui peut comporter un joint 123 d'étanchéité périphérique assurant une étanchéité avec le circuit 3 au niveau de l'orifice d'entrée. Le clapet 8 pare-poussière peut encore posséder une étanchéité avec le corps 2 du robinet.To the [ Fig. 5 ] the dust-proof valve 8 is pushed upstream (towards the inside of the valve 2) by a valve pusher pin 23 which may include a peripheral seal 123 ensuring a seal with the circuit 3 at the level of the 'inlet port. The dust-proof valve 8 can still have a seal with the body 2 of the valve.

Lors de la connexion complète (déplacement complet du clapet 8 pare-poussière), le joint 28 du clapet 8 pare poussière peut être positionné sur le piston de telle sorte que le contact entre le joint 28 du clapet pare poussière 8 et l'alésage n'est rompu qu'après que le contact étanche ne soit établi entre le joint 123 de l'axe 23 et l'alésage du corps 2. Ainsi, la connexion d'un organe 33 portant le pousse-clapet 23 sur le raccord 1 ne remet pas à l'air le volume de gaz de la chambre située en amont du clapet 8 pare poussière.During the complete connection (complete displacement of the dust cover 8), the gasket 28 of the dust cover 8 can be positioned on the piston such that the contact between the gasket 28 of the dust cover 8 and the bore n 'is broken only after the sealed contact is established between the seal 123 of the axis 23 and the bore of the body 2. Thus, the connection of a member 33 carrying the valve pusher 23 on the connector 1 does not reset air the volume of gas in the chamber located upstream of the dust barrier valve 8.

Si un module 33 (robinet ou autre) se raccorde de façon étanche au niveau de l'extrémité aval 6 et que ce module 33 est doté d'une fonction de clapet de pression résiduelle (RPV) alors il règne une pression positive dans la connectique même après la purge du circuit 3 en aval. Ainsi, la séquence ci-dessus permet garantir une étanchéité simultanée des deux joints (28 et 123. Cette architecture permet de conserver une pression positive dans la chambre en amont du clapet 8 pare-poussière dès la déconnexion du module. Il n'est pas besoin d'attendre une "fuite naturelle" du clapet 7 d'isolation pour profiter de cette originalité.If a module 33 (valve or other) is connected in a sealed manner at the level of the downstream end 6 and this module 33 is equipped with a residual pressure valve (RPV) function, then there is a positive pressure in the connections. even after purging circuit 3 downstream. Thus, the above sequence guarantees simultaneous sealing of the two gaskets (28 and 123. This architecture makes it possible to maintain a positive pressure in the chamber upstream of the dust-proof valve 8 as soon as the module is disconnected. It is not need to wait for a "natural leak" from the isolation valve 7 to take advantage of this originality.

A la [Fig. 6] le clapet 8 pare-poussière est arrivé en position ouverte (étanchéité rompue avec le corps du robinet).To the [ Fig. 6 ] the dust protection valve 8 has reached the open position (seal broken with the valve body).

Dans cette position ouverte, la position du piston du clapet 8 pare poussière, la course du pousse-clapet 23 présent dans le robinet 2 et la position des différents joints (28 et 123) sont de préférence tels que le joint 28 du clapet 8 pare poussière n'est jamais en contact ni avec l'alésage délimitant l'orifice ni avec le corps du robinet. Ceci permet d'éviter d'emprisonner de gaz sous pression.In this open position, the position of the piston of the dust barrier valve 8, the stroke of the valve pusher 23 present in the valve 2 and the position of the various seals (28 and 123) are preferably such that the seal 28 of the valve 8 protects dust is never in contact with the bore delimiting the orifice or with the valve body. This makes it possible to avoid trapping gas under pressure.

Lorsque du gaz est soutiré (de l'amont vers l'aval) le gaz peut s'écouler vers l'aval du clapet 8 pare-poussière au moyen par exemple d'un ou plusieurs orifices présents dans ou autour du pousse clapet 23 ou tout autre pièce appropriée. Par exemple, des orifices peuvent être prévus radialement notamment dans le cas où l'activation de la fonction ouverture/fermeture se fait de façon indépendante. Selon une autre possibilité, un perçage coaxial à l'axe pousse-clapet 23 peut être prévu pour le transit de gaz.When gas is withdrawn (from upstream to downstream) the gas can flow downstream from the dust-barrier valve 8, for example by means of one or more orifices present in or around the valve pusher 23 or any other suitable part. For example, orifices can be provided radially, in particular in the case where the activation of the opening / closing function is done independently. Alternatively, a drilling coaxial with the valve pusher axis 23 may be provided for the transit of gas.

Lors de la déconnexion du l'organe 23 pousse-clapet (et du robinet 33 qui le porte), le déplacement inverse se produit dans le sens de la fermeture. Le joint 28 du clapet 8 pare poussière et le joint 123 de l'axe 23 peuvent être positionnés de telle sorte que le contact entre le joint 28 du clapet 8 pare-poussière et l'alésage 2 s'établit avant que le contact étanche entre le joint 123 de l'axe pousse-clapet 23 et l'alésage du bouchon pare poussière ne soit perdu. Ceci permet encore d'éviter de contaminer le circuit en amont du clapet 8 pare-poussière.When disconnecting the valve pusher 23 (and the valve 33 which carries it), the reverse movement occurs in the direction of closure. The seal 28 of the dust shield 8 and the seal 123 of the shaft 23 can be positioned such that the contact between the seal 28 of the dust shield 8 and the bore 2 is established before the sealed contact between the seal 123 of the valve pusher shaft 23 and the bore of the dust cover is not lost. This also makes it possible to avoid contaminating the circuit upstream of the dust-proof valve 8.

Selon cette solution, les problèmes de sifflements et de non refermeture rencontrés avec des clapets de pression résiduelle connus sont évités. Ceci peut être rendu possible grâce à l'intégration de la fonction anti-retour (NRV) dans la tête (dans un second robinet 33 qui se raccorde de façon amovible sur le robinet 2) et non dans le clapet 8 de pression résiduelle comme cela est usuel. Ceci est obtenu également grâce au pilotage de la position du piston du clapet 8 pare poussière faisant office de clapet de pression résiduelle (RPV) et par les organes extérieurs (axe pousse-clapet 23...). L'absence d'étanchéité dynamique (le joint 123 est de préférence statique) permet également de réduire les problèmes précités (sifflement et/ou frottements).According to this solution, the problems of hissing and non-reclosing encountered with known residual pressure valves are avoided. This can be made possible thanks to the integration of the non-return function (NRV) in the head (in a second valve 33 which is removably connected to the valve 2) and not in the valve 8 of residual pressure like this is usual. This is also obtained thanks to the control of the position of the piston of the dust barrier valve 8 acting as a residual pressure valve (RPV) and by the external members (valve pin 23, etc.). The absence of dynamic sealing (the seal 123 is preferably static) also makes it possible to reduce the aforementioned problems (hissing and / or friction).

Dans le cas où un second robinet 33 vient se raccorder sur le premier robinet 2 pour assurer des soutirages/remplissages de gaz, la fonction de clapet de pression résiduelle est donc présente sur le premier robinet 2 grâce au clapet 8 pare-poussière comme décrit ci-dessus. Lorsque les clapets du premier robinet sont ouverts en vue d'un soutirage, la fonction de clapet de pression résiduelle peut être assurée par un autre clapet de pression résiduelle qui est logé dans le second robinet en relation fluidique avec le circuit du premier robinet. Ceci permet d'éviter la mise en résonnance d'un oscillateur dans le système.In the event that a second valve 33 is connected to the first valve 2 in order to provide gas withdrawals / fillings, the residual pressure valve function is therefore present on the first valve 2 thanks to the dust barrier valve 8 as described below. -above. When the valves of the first valve are opened for withdrawal, the residual pressure valve function can be performed by another residual pressure valve which is housed in the second valve in fluid connection with the circuit of the first valve. This allows to avoid the resonance of an oscillator in the system.

Lors d'un remplissage les deux clapets de pression résiduelle sont neutralisés. En effet, le clapet 8 pare poussière est automatiquement inhibé, ce qui évite d'avoir des problèmes liés aux opérations manuelles (commutations de leviers par exemple).When filling the two residual pressure valves are neutralized. In fact, the dust barrier valve 8 is automatically inhibited, which avoids having problems linked to manual operations (switching of levers for example).

Ce clapet 8 pare-poussière formant clapet de pression résiduelle peut être prévu sur d'autres raccords ou robinets et notamment sur un raccord ou robinet 1 comprenant trois clapets en série tel qu'illustré à titre d'exemple à la [Fig. 2]. Ainsi le raccord 1 peut comporter, disposés en série de l'amont vers l'aval dans le circuit 3 interne entre l'extrémité amont 5 et l'extrémité aval 6: un clapet 11 amont, le clapet 7 d'isolement et le clapet 8 pare-poussière.This dust protection valve 8 forming a residual pressure valve can be provided on other fittings or taps and in particular on a fitting or tap 1 comprising three valves in series as illustrated by way of example in [ Fig. 2 ]. Thus, the connector 1 may comprise, arranged in series from upstream to downstream in the internal circuit 3 between the upstream end 5 and the downstream end 6: an upstream valve 11, the isolation valve 7 and the valve 8 dust cover.

Les deux clapets du mode de réalisation de la [Fig. 1] ou les trois clapets du mode de réalisation de la [Fig. 2] peuvent être actionnés en chaine via le déplacement du clapet 8 par poussière comme détaillé dans le document FR3033386 A1 .The two valves of the embodiment of the [ Fig. 1 ] or the three valves of the embodiment of [ Fig. 2 ] can be chain operated by moving the valve 8 by dust as detailed in the document FR3033386 A1 .

Dans la configuration de la [Fig. 2], en situation de repos (pas de sollicitation externe), les trois clapets 8, 7, 11 sont dans leur position de fermeture du circuit 3.In the configuration of the [ Fig. 2 ], in idle situation (no external stress), the three valves 8, 7, 11 are in their circuit 3 closed position.

Le clapet 8 pare-poussière est déplaçable de sa position aval de fermeture vers une première position amont déterminée dite « sans contact » ouvrant l'extrémité aval du circuit 3, dans laquelle l'extrémité 108 amont du clapet 8 pare-poussière ne pousse pas le clapet 7 d'isolement (pas de contact avec le clapet 7 d'isolement).The dust-barrier valve 8 can be moved from its downstream closed position to a first determined upstream position called "contactless" opening the downstream end of the circuit 3, in which the upstream end 108 of the dust-barrier valve 8 does not push. the isolation valve 7 (no contact with the isolation valve 7).

Cette position peut être obtenue par exemple en raccordant à l'extrémité aval du corps 2 du robinet 1 un outil 33 de remplissage et/ou soutirage. Par exemple, l'outil 33 comporte un organe 23 pousse clapet mobile qui vient légèrement déplacer le clapet 8 par poussière de l'aval vers l'amont. Le pousse-clapet 23 peut être déplace par exemple via un levier pivotant actionnable manuellement, hydrauliquement, pneumatiquement, électriquement ou par tout autre organe d'actionnement approprié.This position can be obtained for example by connecting to the downstream end of the body 2 of the valve 1 a tool 33 for filling and / or drawing off. For example, the tool 33 includes a member 23 for pushing the movable valve which slightly moves the valve 8 by dust from downstream to upstream. The valve pusher 23 can be moved, for example, via a pivoting lever which can be actuated manually, hydraulically, pneumatically, electrically or by any other suitable actuator.

Cette position sans contact présente de nombreux avantages. Ainsi, cette configuration dans laquelle seul le clapet 8 pare-poussière est ouvert permet de raccorder de façon étanche un outil de remplissage et/ou de soutirage à l'extrémité aval du robinet 2 avec un effort constant quel que soit le niveau de pression en amont du clapet 7 d'isolation. En effet, la pression en amont du clapet 8 pare-poussière peut être la même qu'à l'extérieur du robinet (pression atmosphérique ambiante), en particulier lorsque le clapet 8 pare-poussière ferme de façon non étanche l'extrémité aval 6 du circuit 3.This contactless position has many advantages. Thus, this configuration in which only the dust-proof valve 8 is open makes it possible to connect in a sealed manner a filling and / or drawing-off tool to the downstream end of the valve 2 with a constant force whatever the pressure level in upstream of the isolation valve 7. In fact, the pressure upstream of the dust-barrier valve 8 may be the same as outside the valve (ambient atmospheric pressure), in particular when the dust-barrier valve 8 closes the downstream end 6 in a non-watertight manner. of circuit 3.

De plus, cette configuration sans contact permet également à un outil de remplissage/soutirage de réaliser des tests d'étanchéité du clapet 7 d'isolement. L'outil de remplissage/soutirage se raccorde de façon étanche à l'extrémité 6 du robinet et peut être configurée pour réaliser une mise sous vide (dépression) dans la partie aval du circuit 3 (en aval du clapet 7 d'isolation). Ceci permet de réaliser un ou des tests pour vérifier/qualifier le niveau d'étanchéité du clapet 7 et de l'outil, par exemple avant de soumettre le mécanisme à des pressions élevées.In addition, this contactless configuration also allows a filling / withdrawing tool to carry out leak tests of the isolation valve 7. The filling / withdrawing tool is connected in a sealed manner to the end 6 of the valve and can be configured to create a vacuum (depression) in the downstream part of the circuit 3 (downstream of the isolation valve 7). This makes it possible to carry out one or more tests to check / qualify the level of tightness of the valve 7 and of the tool, for example before subjecting the mechanism to high pressures.

Le clapet 8 pare-poussière est déplaçable plus loin vers l'amont dans une seconde position amont déterminée dite « de contact » ouvrant l'extrémité aval 6 du circuit 3 et dans laquelle l'extrémité 108 amont du clapet 8 pare-poussière vient pousser une extrémité aval du clapet 7 d'isolement. Le clapet 7 d'isolement est alors déplacé par contact hors de son siège 9 vers une première position amont d'ouverture du circuit 3 dans laquelle le clapet 7 d'isolement ne pousse pas le troisième clapet 11 amont.The dust-barrier valve 8 can be moved further upstream in a second determined upstream position called "contact" opening the downstream end 6 of the circuit 3 and in which the upstream end 108 of the dust-barrier valve 8 pushes. a downstream end of the isolation valve 7. The isolation valve 7 is then moved by contact out of its seat 9 to a first upstream opening position of the circuit 3 in which the isolation valve 7 does not push the third upstream valve 11.

Avantageusement et comme détaillé ci-après, le robinet 1 peut comprendre un orifice calibré 4 définissant une ouverture déterminée autorisant un passage de gaz entre l'amont et l'aval du clapet 11 amont lorsque ce dernier est dans sa position de fermeture du circuit 3. Cette ouverture déterminée de l'orifice calibré 4 est cependant inférieure à l'ouverture produite lorsque le clapet 11 amont est dans sa position d'ouverture du circuit 3. Dans ce cas, dans cette position, le fluide sous pression peut s'échapper vers l'extrémité aval selon le débit imposé par l'orifice calibré 4.Advantageously and as detailed below, the valve 1 can include a calibrated orifice 4 defining a determined opening allowing a passage of gas between the upstream and downstream of the upstream valve 11 when the latter is in its position for closing the circuit 3 This determined opening of the calibrated orifice 4 is however less than the opening produced when the upstream valve 11 is in its open position of the circuit 3. In this case, in this position, the pressurized fluid can escape. towards the downstream end according to the flow rate imposed by the calibrated orifice 4.

C'est-à-dire que, dans ce cas, les deux premiers clapets 8, 7 sont ouverts mécaniquement tandis que le troisième clapet 11 amont est en positon fermée mais un débit calibré peut tout de même s'échapper.That is to say that, in this case, the first two valves 8, 7 are opened mechanically while the third upstream valve 11 is in the closed position, but a calibrated flow rate can still escape.

Cette configuration correspond à un début de soutirage via une ouverture progressive du circuit permettant de contrôler une montée en pression progressive en aval.This configuration corresponds to a start of withdrawal via a progressive opening of the circuit making it possible to control a progressive rise in pressure downstream.

Le clapet 8 pare-poussière est déplaçable encore plus loin vers l'amont dans une troisième position amont déterminée ouvrant le circuit 3. Dans cette position l'extrémité 108 amont du clapet 8 pare-poussière vient pousser une extrémité aval du clapet 7 d'isolement mobile pour déplacer par contact le clapet 7 d'isolement hors de son siège 9 vers une seconde position amont d'ouverture du circuit 3. Dans cette position, le clapet 7 d'isolement pousse le clapet 11 amont dans une position d'ouverture complète de l'extrémité amont du circuit 3. C'est-à-dire que, dans ce cas, les trois clapets 8, 7, 11 sont complètement ouverts permettant une circulation maximale de fluide.The dust-barrier valve 8 can be moved even further upstream in a third determined upstream position opening the circuit 3. In this position the upstream end 108 of the dust-barrier valve 8 pushes a downstream end of the valve 7 of movable isolation to move by contact the isolation valve 7 out of its seat 9 to a second upstream opening position of the circuit 3. In this position, the isolation valve 7 pushes the upstream valve 11 into an open position complete of the upstream end of the circuit 3. That is to say that, in this case, the three valves 8, 7, 11 are completely open allowing maximum circulation of fluid.

Cette configuration correspond à un état de remplissage ou de soutirage d'un réservoir 40 à travers le robinet 1.This configuration corresponds to a state of filling or drawing off of a reservoir 40 through the tap 1.

De préférence, l'éventuel orifice calibré 4 délimite une ouverture ayant une première section déterminée S1 tandis que l'ouverture produite lorsque le clapet 11 amont est dans sa position d'ouverture du circuit 3 a une seconde section déterminée S2 de sorte que le rapport entre la première section S1 et la seconde section S2 est compris entre 1/100 et 1/20 et de préférence 1/80 et 1/30.Preferably, the possible calibrated orifice 4 delimits an opening having a first determined section S1 while the opening produced when the upstream valve 11 is in its open position of the circuit 3 has a second determined section S2 so that the ratio between the first section S1 and the second section S2 is between 1/100 and 1/20 and preferably 1/80 and 1/30.

Le passage (première section d'ouverture S1) de l'orifice calibré peut être obtenu en altérant la ligne d'étanchéité entre le clapet 11 amont et son siège 15 par un brochage, un trait de scie ou autre outil sur le clapet ou sur son siège. Le clapet 11 peut ne pas être parfaitement cylindrique (boule à facettes, bille poreuse, ou de tout autre forme pour permettre au gaz de passer avec un débit limité).The passage (first opening section S1) of the calibrated orifice can be obtained by altering the sealing line between the upstream valve 11 and its seat 15 by broaching, a saw cut or other tool on the valve or on his seat. The valve 11 may not be perfectly cylindrical (faceted ball, porous ball, or of any other shape to allow gas to pass with a limited flow).

Une autre solution alternative ou cumulative est de placer un orifice calibré en parallèle de ce clapet 11 amont, pour assurer le passage limité du gaz. Alternativement cet orifice calibré peut passer au travers du corps du clapet 11 amont.Another alternative or cumulative solution is to place a calibrated orifice in parallel with this upstream valve 11, to ensure the limited passage of gas. Alternatively, this calibrated orifice can pass through the body of the upstream valve 11.

Claims (13)

Raccord de fluide sous pression, notamment pour un stockage de gaz sous pression, le raccord (1) étant destiné à coopérer avec un appareil de remplissage et/ou de soutirage de fluide sous pression, le raccord (1) comprenant un corps (2) délimitant un circuit (3) interne de soutirage et éventuellement de remplissage de fluide, ledit circuit (3) s'étendant entre une extrémité amont (5) destinée à être mise en relation avec un volume de stockage de fluide sous pression et une extrémité aval (6) destinée à être reliée avec un appareil de soutirage et/ou de remplissage de fluide sous pression, le raccord (1) comprenant, au niveau de l'extrémité (6) aval du circuit (3), un clapet (8) pare-poussière mobile relativement au corps (2) entre une position de fermeture de l'extrémité (6) aval du circuit (3) et au moins une position d'ouverture, caractérisé en ce que le clapet (8) pare-poussière est un clapet de pression résiduelle configuré, lorsqu'il est en position fermée, pour maintenir une pression minimale déterminée dans le circuit (3) et permettant une évacuation de gaz vers l'extérieur en cas de surpression dans le circuit (3) au-dessus d'un seuil de pression déterminé par rapport à l'extérieur.Pressurized fluid connection, in particular for storing pressurized gas, the connection (1) being intended to cooperate with an apparatus for filling and / or withdrawing pressurized fluid, the connection (1) comprising a body (2) delimiting an internal circuit (3) for withdrawing and possibly filling fluid, said circuit (3) extending between an upstream end (5) intended to be placed in connection with a pressurized fluid storage volume and a downstream end (6) intended to be connected with a device for withdrawing and / or filling pressurized fluid, the connection (1) comprising, at the level of the downstream end (6) of the circuit (3), a valve (8) dust cover movable relative to the body (2) between a closed position of the downstream end (6) of the circuit (3) and at least one open position, characterized in that the dust cover valve (8) is a residual pressure valve configured, when in the closed position, to maintain a pressure minimum pressure determined in the circuit (3) and allowing gas to be evacuated to the outside in the event of an overpressure in the circuit (3) above a pressure threshold determined with respect to the outside. Raccord selon la revendications 1, caractérisé en ce qu'il comprend un joint (28) déformable situé sur le clapet (8) pare-poussière, en position fermée du clapet (8) pare-poussière, le joint (28) étant en contact étanche contre le corps (2) lorsque le différentiel de pression entre le circuit (3) et l'extérieur est inférieur au seuil de pression, dans cette position, le joint (28) se déformant et autorisant une évacuation de fluide vers l'extérieur en cas d'excès de pression dans le circuit (3) au-dessus du seuil.Connection according to Claim 1, characterized in that it comprises a deformable seal (28) located on the dust-proof valve (8), in the closed position of the dust-proof valve (8), the gasket (28) being in contact sealed against the body (2) when the pressure differential between the circuit (3) and the outside is less than the pressure threshold, in this position, the seal (28) deforming and allowing fluid to escape to the outside in the event of excess pressure in the circuit (3) above the threshold. Raccord selon la revendications 1 ou 2, caractérisé en ce que le clapet (8) pare-poussière est configuré pour assurer, en position fermée, une évacuation de gaz en ouvrant l'extrémité (6) aval du circuit (3) en cas de surpression dans le circuit (3) au-dessus d'un seuil de pression déterminé par rapport à l'extérieur compris entre 200mbar et 20bar, notamment entre 200mbar et dix bar, par exemple à une valeur comprise entre 1 à 6bar.Connection according to claim 1 or 2, characterized in that the dust protection valve (8) is configured to ensure, in the closed position, a gas discharge by opening the downstream end (6) of the circuit (3) in the event of an overpressure in the circuit (3) above a pressure threshold determined with respect to the outside between 200mbar and 20bar, in particular between 200mbar and ten bar, for example at a value between 1 to 6bar. Raccord selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le clapet (8) pare poussière comprend un joint (28) périphérique formant une lèvre qui vient s'appuyer de façon étanche sur la bordure l'orifice d'entrée, la lèvre étant susceptible de se déformer et/ou se déplacer pour rompre l'étanchéité avec le corps (2) du robinet au niveau de l'entrée.Connection according to any one of Claims 1 to 3, characterized in that the dust-proof valve (8) comprises a peripheral seal (28) forming a lip which comes to rest in a sealed manner on the edge of the inlet orifice , the lip being liable to deform and / or move to break the seal with the body (2) of the valve at the inlet. Raccord selon la revendication 4, caractérisé en ce que le joint (28) comprend une première extrémité solidaire du clapet (8) pare-poussière et une seconde extrémité formant la lèvre, ladite seconde extrémité du joint (28) étant située en aval de la première extrémité du joint (28).Connection according to Claim 4, characterized in that the seal (28) comprises a first end integral with the dust-proof valve (8) and a second end forming the lip, said second end of the seal (28) being located downstream of the first end of the seal (28). Raccord selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'extrémité aval (6) du circuit (3) débouche au niveau d'une extrémité aval du raccord (1) au niveau d'un alésage cylindrique, le clapet (8) pare-poussière comportant un piston mobile dans l'alésage et équipé d'une gorge accueillant le joint (28), le joint (28) étant en contact étanche avec l'alésage lorsque le clapet (8) pare-poussière est en position fermée.Connection according to any one of claims 1 to 5, characterized in that the downstream end (6) of the circuit (3) opens out at a downstream end of the connection (1) at a cylindrical bore, the dust-proof valve (8) comprising a piston movable in the bore and fitted with a groove accommodating the seal (28), the seal (28) being in sealed contact with the bore when the dust-proof valve (8) is in the closed position. Raccord selon la revendications 6, caractérisé en ce que, dans une position ouverte déterminée du clapet (8) pare-poussière, le clapet (8) pare-poussière n'est plus en contact étanche avec l'alésage de l'extrémité aval du circuit (3).Connection according to Claim 6, characterized in that , in a determined open position of the dust-proof valve (8), the dust-proof valve (8) is no longer in sealed contact with the bore of the downstream end of the circuit (3). Raccord selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le clapet (8) pare-poussière est sollicité vers sa position fermée par un organe (14) de rappel.Connection according to any one of Claims 1 to 7, characterized in that the dust-proof valve (8) is urged towards its closed position by a return member (14). Raccord selon l'une quelconque des revendications 1 à 8 caractérisé en ce qu'il comprend un clapet (7) d'isolement disposé en série avec le clapet (8) pare-poussière dans le circuit (3) interne, le clapet (7) d'isolement étant disposé en amont du clapet (8) pare-poussière.Connection according to any one of Claims 1 to 8, characterized in that it comprises an isolation valve (7) arranged in series with the dust-proof valve (8) in the internal circuit (3), the valve (7) ) isolation being disposed upstream of the dust cover valve (8). Raccord selon la revendication 9 caractérisé en ce qu'il comprend, disposés en série de l'amont vers l'aval dans le circuit (3) interne entre l'extrémité amont (5) et l'extrémité aval (6): un clapet (11) amont, le clapet (7) d'isolement et le clapet (8) pare-poussière.Connection according to Claim 9, characterized in that it comprises, arranged in series from upstream to downstream in the internal circuit (3) between the upstream end (5) and the downstream end (6): a valve (11) upstream, the isolation valve (7) and the dust protection valve (8). Robinet pour fluide sous pression comprenant un raccord selon l'une quelconque des revendications 1 à 10.A pressurized fluid valve comprising a fitting according to any one of claims 1 to 10. Récipient de fluide sous pression, en particulier bouteille ou ensemble de bouteilles de gaz sous pression, comprenant un raccord (1) conforme à l'une quelconque des revendications 1 à 9 ou un robinet conforme à la revendication 11.A pressurized fluid container, in particular a pressurized gas cylinder or assembly of cylinders, comprising a connector (1) according to any one of claims 1 to 9 or a valve according to claim 11. Procédé de raccordement d'un appareil de soutirage et/ou de remplissage avec le circuit (3) d'un raccord (1) selon l'une quelconque des revendications 1 à 12, le procédé utilisant une prise de conditionnement connectée mécaniquement au corps (2) du raccord (1) de façon amovible et possédant un pousse-clapet (23), le procédé comportant une étape de déplacement du clapet (8) pare-poussière de l'amont vers l'aval de sa position fermée vers une position ouverte par le pousse-clapet (23), dans lequel le pousse-clapet (23) comprend un joint (123) d'étanchéité coopérant avec l'extrémité aval du circuit (3), et dans lequel, pendant une première partie de la course de déplacement du clapet (8) pare poussière vers sa position ouverte, le pousse-clapet (23) et le clapet (8) pare-poussière sont en contact étanche avec l'extrémité aval du circuit (3), puis, pendant une seconde partie de la course de déplacement du clapet (8) pare poussière vers sa position ouverte, le pousse-clapet (23) reste en contact étanche avec l'extrémité aval du circuit (3) tandis que le clapet (8) pare-poussière atteint une position ouverte dans laquelle le clapet (8) pare-poussière n'est plus en contact étanche avec l'extrémité aval du circuit (3).Method of connecting a drawing-off and / or filling device with the circuit (3) of a connector (1) according to any one of claims 1 to 12, the method using a conditioning socket mechanically connected to the body ( 2) of the connector (1) removably and having a valve pusher (23), the method comprising a step of moving the dust cover valve (8) upstream to downstream from its closed position to a position opened by the valve pusher (23), in which the valve pusher (23) comprises a seal (123) cooperating with the downstream end of the circuit (3), and in which, during a first part of the travel stroke of the dust cover (8) towards its open position, the valve pusher (23) and the dust cover (8) are in sealed contact with the downstream end of the circuit (3), then, during a second part of the displacement stroke of the dust barrier valve (8) towards its open position, the valve pusher (23) remains in sealed contact with the downstream end of the circuit (3) while the dust cover valve (8) reaches an open position in which the dust cover valve (8) is no longer in sealed contact with the downstream end of the circuit (3).
EP20160881.7A 2019-03-12 2020-03-04 Connector for pressurised fluid, valve and container comprising such a connector and connection method Active EP3708900B1 (en)

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FR2962521A1 (en) * 2010-07-09 2012-01-13 Air Liquide FILLING FITTING, CONTAINER AND FILLING METHOD
FR2962519A1 (en) * 2010-07-09 2012-01-13 Air Liquide FILLING FITTING, RECIPIENT AND FILLING METHOD THEREOF
FR2978432A1 (en) * 2011-07-26 2013-02-01 Air Liquide FILLING FITTING, CONTAINER, FILLING METHOD AND PACKAGING
FR3033386A1 (en) 2015-03-04 2016-09-09 Air Liquide TAP, CONTAINER AND METHODS OF FILLING, STRAINING AND VACUUMING

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2311989A2 (en) 1975-05-23 1976-12-17 Utilisation Ration Gaz Pressure vessel safety sealing assembly - has lower plug with guide rods working in upper plug and body
EP1530002A1 (en) * 2003-11-04 2005-05-11 Cavagna Group S.p.A. Valve for containers of pressurized fluids with dirt blocking device
FR2962521A1 (en) * 2010-07-09 2012-01-13 Air Liquide FILLING FITTING, CONTAINER AND FILLING METHOD
FR2962519A1 (en) * 2010-07-09 2012-01-13 Air Liquide FILLING FITTING, RECIPIENT AND FILLING METHOD THEREOF
FR2978432A1 (en) * 2011-07-26 2013-02-01 Air Liquide FILLING FITTING, CONTAINER, FILLING METHOD AND PACKAGING
FR3033386A1 (en) 2015-03-04 2016-09-09 Air Liquide TAP, CONTAINER AND METHODS OF FILLING, STRAINING AND VACUUMING

Also Published As

Publication number Publication date
EP3708900B1 (en) 2021-12-15
FR3093782A1 (en) 2020-09-18
FR3093782B1 (en) 2021-02-12

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