EP1342140A2 - Expansion valve assembly for fluid having pre-adjusted and non-user-modifiable fixed pressure - Google Patents

Expansion valve assembly for fluid having pre-adjusted and non-user-modifiable fixed pressure

Info

Publication number
EP1342140A2
EP1342140A2 EP01998155A EP01998155A EP1342140A2 EP 1342140 A2 EP1342140 A2 EP 1342140A2 EP 01998155 A EP01998155 A EP 01998155A EP 01998155 A EP01998155 A EP 01998155A EP 1342140 A2 EP1342140 A2 EP 1342140A2
Authority
EP
European Patent Office
Prior art keywords
fluid
valve
outlet
expansion
socket
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Withdrawn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
EP01998155A
Other languages
German (de)
French (fr)
Inventor
Marco Arzenton
Etienne Gounot
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.)
FRO SpA
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
FRO Srl
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, FRO Srl filed Critical Air Liquide SA
Publication of EP1342140A2 publication Critical patent/EP1342140A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0663—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using a spring-loaded membrane with a spring-loaded slideable obturator

Definitions

  • Fluid valve-regulator with fixed pressure preset and not modifiable by the user
  • the invention relates to a non-adjustable, economical, robust and easy-to-use pressure-reducing valve with pressure relief valve for gas cylinders, in particular intended for gas cylinders usable in the field of welding, in laboratories or the like.
  • valve regulator assemblies such as that described in document EP-A-747796, usually have at least one device for interrupting the outlet of high pressure gas, a pressure regulator, a flow and pressure adjustment system, and a connector for the gas outlet to which the user can connect.
  • the device for interrupting the high-pressure gas outlet consists mainly of either the valve of the regulator when the valve-regulator assembly has only one valve, or of a valve separate from the expansion valve, when the assembly valve-regulator comprises several valves, in general two valves.
  • valve-regulator assembly can generate:
  • valve-regulator assembly comprising all the aforementioned devices and components has a high manufacturing cost which penalizes and slows down the large-scale distribution of this type of valve-regulator assembly, although it is recognized that the concept of valve-regulator greatly contributes to improving the safety and simplicity of the use of conditioned gas.
  • the aim of the present invention is then to solve the above problems by proposing a valve-regulator assembly that is easier to use than conventional valve-regulator assemblies, even for users who have no particular technical knowledge, thanks to a reduction in the number of operations to be carried out when the gas is drawn off by the user and which, moreover, has a significantly lower manufacturing cost than a valve-regulator assembly of the prior art.
  • valve-pressure reducing valve assembly with preset expansion comprising:
  • a main body within which at least a first internal fluid passage is arranged between at least one fluid inlet orifice at a first pressure value and at least one fluid outlet orifice at the desired fixed pressure value
  • fluid expansion means arranged in or on at least part of said internal fluid passage, between said inlet and outlet orifice, the fluid expansion means being adapted to ensure expansion of the fluid from said first value of pressure up to the preset pressure value, said fluid expansion means comprising a relief valve (19) positioned in a fixed expansion position and not modifiable by the user corresponding to said preset pressure value, and - a outlet fitting capable of delivering said fluid after expansion to the preset fixed pressure value,
  • the outlet fitting comprising, arranged on said first internal fluid passage, at least one movable connection valve in translation in said first internal passage.
  • the preset regulating fluid valve-regulator assembly includes the following characteristics:
  • Said fluid expansion means make it possible to provide expansion of the fluid to a prefixed pressure value of between 3 bars and 12 bars, more preferably between 4 bars and 10 bars;
  • the connector valve moves in translation in the outlet connector, when connecting to said connector a user outlet socket comprising actuating means of the connector valve which cooperate with said valve so as to obtain said displacement;
  • the outlet fitting comprises, on its external peripheral wall, at least one recess and / or at least one wall projecting with respect to at least part of the external surface of said fitting, preferably at least one recess capable of cooperating with a guidance and locking system arranged in the user outlet socket; the positioning of the expansion valve in said fixed expansion position which cannot be modified by the user is done by means of an adjustment system of the desired expansion value comprising at least one cooperating adjustment screw / nut system with a pressure fixing spring capable of exerting a pushing force on a flexible membrane carrying a valve pusher cooperating with the expansion valve, preferably said system for adjusting the desired expansion value is at least partially arranged in the body of the valve-regulator assembly not accessible to the user;
  • the outlet connector has several positions having different external diameters and further comprises a valve spring means cooperating with the connector valve, and at least one gasket and a seat making it possible to obtain a fluid tightness of the fluid outlet port carried by the fitting; the fluid expansion means are adapted and / or the dimensions of at least
  • the body also comprises a filling valve comprising a second internal fluid passage connected to said first internal fluid passage,
  • the body further comprises a connection endpiece capable of ensuring a fixing of the body on a source of pressurized fluid, said connection endpiece carrying the fluid inlet orifice at the first pressure value.
  • the body also comprises a safety system provided with a rupture disc fitted in a sealed manner on a third internal passage of fluid connecting the first internal passage to the ambient atmosphere, said rupture disc being capable of rupturing when the pressure of the fluid exerted in contact with said rupture disc and in the internal passage reaches a predetermined maximum pressure value so as to release the fluid to the atmosphere.
  • the invention also relates to a method of connecting a user outlet socket to an assembly in which the following successive steps are carried out: a) positioning the user outlet socket on the outlet connector by plugging in translation of the socket on said fitting by a user, b) continue the insertion of the socket on the fitting so as to obtain a progressive fluid tightness thanks to cooperation by means of a leaktight fitting arranged in the socket and the external wall from the cylindrical outlet end of the connector, c) after obtaining the fluid tightness, progressive opening of the plug valves and of the connector, respectively, said valves cooperating with each other by repelling each other and the other in translational movements of opposite directions along the axis of the connector and of the socket, d) integral locking of the locking system of the socket on the fitting, and e) circulation of the fluid at the preset expansion pressure from the fitting to the outlet.
  • To disconnect the plug from the fitting proceed in reverse, as explained below.
  • the invention also relates to a fluid transfer system comprising:
  • a fluid valve-regulator assembly according to the invention
  • a fluid outlet socket comprising a body in which is fitted an internal guidance and locking system used to receive and guide the end of the outlet connector of the valve-regulator assembly and, moreover, to prevent the disconnection of the socket from said fitting by cooperating with a recess formed in the external peripheral wall of the fitting, said socket further comprising a tap valve coming normally lean against a valve seat and movable in translation along the longitudinal axis of the socket.
  • the invention also relates to a container of pressurized fluid, in particular a gas cylinder, equipped with a valve-regulator assembly according to the invention, preferably said assembly is inserted into and protected by a protective cover mounted on the container. .
  • FIG. 1 represents a view in longitudinal section of a valve-regulator assembly according to the invention according to a first angle of view
  • FIG. 2 represents a view in longitudinal section of the valve-regulator assembly of FIG. 1 according to a second viewing angle offset by approximately 90 ° from the first viewing angle.
  • valve-regulator assembly according to the invention, the body 1 of which contains a part acting as a regulator preset at a given pressure, for example 8 bars, which cannot be modified by the user.
  • the part of the body 1 acting as a pressure reducer comprises several components cooperating with each other to allow the fixing of the desired fixed pressure, namely in particular a screw / nut adjustment system 4, a part 6 serving as thrust spring, a spring 7 for fixing the pressure, and a flexible membrane 8 carrying a valve pusher 3, a relief valve 19, a valve seat 20 and a valve spring 22.
  • the pressure relief valve 19 tends to be pushed against the valve seat 20 by means of a valve spring 22, pushing from left to right in FIG. 2, so as to cause a closure. of the expansion orifice 21.
  • the body 1 is also equipped with an anti-pressurization system comprising a rupture disc 11 held by a fixing nut 10, which rupture disc 11 has the function of rupturing if the fluid pressure becomes too high , for example if the pressure reaches a value fixed between 170 bars and 200 bars, which then allows the gas to escape to the atmosphere through the passage 18 and the windows of the passage 23, and avoids the risk of deterioration of the cylinder or the high pressure part of the valve-regulator assembly.
  • an anti-pressurization system comprising a rupture disc 11 held by a fixing nut 10, which rupture disc 11 has the function of rupturing if the fluid pressure becomes too high , for example if the pressure reaches a value fixed between 170 bars and 200 bars, which then allows the gas to escape to the atmosphere through the passage 18 and the windows of the passage 23, and avoids the risk of deterioration of the cylinder or the high pressure part of the valve-regulator assembly.
  • the body 1 further comprises a plug or connector 12 for closing the gas outlet allowing an easy and rapid connection and disconnection of the user to this valve-regulator assembly so as to be able to recover and then use the expanded gas. at said predetermined pressure in said regulator part.
  • the opening of the gas passing through the body 1 of the valve-regulator assembly is controlled downstream of the regulator part and is synchronized with the connection of the outlet socket by the user to the outlet connector 12 of gas as detailed below and illustrated in Figures 3 to 5.
  • connection of this socket to the gas outlet connection makes it possible to obtain, in addition to the actual connection, a seal followed by a release of the gas at the desired pressure.
  • valve-regulator assembly can be done without dismantling the assembly, and this, simply by supplying the filling valve 13 with pressurized gas, which then travels to through the body 1, by means of the internal passage 50 connecting said filling valve 13 to the connection nozzle 15 making it possible to fix the valve-regulator assembly on the neck of a gas bottle, by means of the internal gas passage 51 passing axially through the connection endpiece 15.
  • the body 1 of the valve-regulator assembly is fixed to the bottle in general by screwing the end piece 15 onto the neck of said bottle by means of a thread 16 carried on the external wall of the end piece 15 of connection and a reciprocal tapping arranged on the internal wall of the neck of the bottle.
  • valve-regulator assembly Thanks to this type of valve-regulator assembly, the implementation of gas is reduced to a single simple and rapid operation, against two or three operations with conventional valve-regulator assemblies.
  • valve-regulator assembly If the connection on the user side supplying the user's gas circuit is also of the shutter type, the use of a valve-regulator assembly according to the invention also ensures the preservation of the quality of the gas in the user circuit.
  • Figures 3 and 4 show a longitudinal sectional view of the outlet connector 12 of the valve-regulator assembly of the invention to which is connected the socket 100 user which can take different embodiments, such as a socket 100 with fixing ring or ring 64 as shown in FIG. 3 or a socket 100 with control button 74 illustrated in FIG. 4.
  • the user outlet 100 is plugged onto the outlet connector 12 via its fixing end 101 which includes a housing 102 intended to receive the projecting end of the connector. 12.
  • the housing 102 of the socket 100 includes an internal guidance and locking system 65 serving, on the one hand, to receive and guide the end 35 of the connector 12 and, on the other hand, to prevent the disconnection of the socket.
  • 100 of the connector 12 coming to cooperate with a recess or a groove 36 located peripherally on the connector 12 which has a generally cylindrical shape and or, as the case may be, with a wall 37 projecting from the surface of the connector 12.
  • the outlet 100 user also comprises a valve 79 of outlet provided with a projecting portion 60 normally coming to bear against a seat 63 of valve so as to close the passage of fluid from the outlet to means of the projecting portion 60 carried by the valve 79.
  • An elastic means such as a spring 61, exerts a pushing force on the rear part of the valve 79 tending to push it back towards its seat 63.
  • a gasket 62 makes it possible to obtain a seal between the connector 12 and the socket 100, when they are connected to each other.
  • the fixing ring 64 arranged on the periphery of the body of the socket 100, cooperates in particular with a second spring 78 or elastic means which exerts a thrust on the guide and locking system 65, so as to be able to dissociate the socket 100 of the fitting 12 by releasing the locking system 65 from the groove 36.
  • a second spring 78 or elastic means which exerts a thrust on the guide and locking system 65, so as to be able to dissociate the socket 100 of the fitting 12 by releasing the locking system 65 from the groove 36.
  • the locking system 65 comprises, for example , one or more rollers.
  • the connector 12 also includes a connector valve 30 and a valve spring 33, as well as a gasket 31 sealing the fluid outlet orifice at a surface 32.
  • the operation of the socket 100 / fitting 12 assembly is as follows. The positioning of the socket 100 on the connector 12 and the polarization linked to the specific profile of the assembly are carried out by plugging in translation of the socket 100 user on the outlet connector 12 of the valve-regulator assembly.
  • the seal is obtained gradually by continuing the insertion of the socket 100 by means of the lining 62 of the socket on the end 35 of the cylindrical outlet of the connector 12.
  • the seal is achieved, there is a gradual opening of the valves 79 and 30 of the socket 100 and of the connector 12, respectively, said valves 79 and 30 cooperating with each other by repelling each other and the other synchronously or, as the case may be, successively one after the other.
  • the locking system 65 comes to play its role so as to allow an integral fixing of the socket 100 on the connector 12. Consequently, the valves 30 and 79 being detached from their respective seats, the expansion cycle under pressure desired prefixed (for example 8 bars) can then start and the regulating fluid then travels from the valve-regulator assembly to the user outlet 100 and is then conveyed, via suitable means, in particular pipes, flexible or the like, to the gas use site.
  • suitable means in particular pipes, flexible or the like
  • disconnection can be achieved by proceeding in reverse, that is to say by starting by unlocking the locking means 65 as explained above.
  • FIG. 4 shows, for its part, a second possible embodiment of the user socket 100, differentiating on the other hand, by a button system
  • Figure 5 shows schematically the outlet 100 of Figure 4 shown in the coupled position to the connector 12 of the pressure reducing valve.
  • the user outlet 100 includes a mobile device 70, such as a valve, preventing the return or backflow of fluid from the outlet 100 to the valve-regulator assembly.
  • a mobile device 70 such as a valve
  • FIG. 6 shows a side view of the connector 12 provided with one or more recesses 34 carried by its external peripheral wall and making it possible to avoid the fitting of the connector 12 by an unauthorized person.
  • the valve-pressure reducing valve assembly with preset expansion therefore does not include an operating member which can be manipulated by the user and which makes it possible to modify the level of gas pressure delivered by this assembly; the pressure delivered by this assembly is therefore fixed and approximately constant.

Abstract

The invention concerns an expansion valve assembly for a fluid with pre-adjusted expansion comprising a main body (1), fluid expansion means adapted to provide a fluid expansion from a first pressure value to a prefixed pressure value, and an outlet connection (12) for delivering said fluid after expansion at the pre-adjusted fixed pressure value and comprising, arranged on said internal fluid passage, at least a coupling valve (30) mobile in translation in said first internal passage. The invention also concerns a method for connecting a user take-off point (100) to such an assembly and a fluid transfer system comprising a user take-off point (100) and such an assembly.

Description

Ensemble robinet-détendeur de fluide à pression fixe préréglée et non modifiable par l'utilisateur Fluid valve-regulator with fixed pressure preset and not modifiable by the user
L'invention concerne un robinet-détendeur à pression de détente non- réglable, économique, robuste et d'usage aisé pour bouteilles de gaz, en particulier destiné aux bouteilles de gaz utilisables dans le domaine du soudage, dans les laboratoires ou analogues.The invention relates to a non-adjustable, economical, robust and easy-to-use pressure-reducing valve with pressure relief valve for gas cylinders, in particular intended for gas cylinders usable in the field of welding, in laboratories or the like.
Les ensembles robinets de gaz à détendeurs intégrés existants, encore appelés ensembles robinets-détendeurs, tel celui décrit par le document EP-A- 747796, disposent habituellement au moins d'un dispositif d'interruption de la sortie de gaz haute pression, d'un détendeur, d'un système de réglage de débit et de pression, et d'un raccord pour la sortie de gaz auquel peut se raccorder l'utilisateur.Existing integrated valve gas valve assemblies, also called valve regulator assemblies, such as that described in document EP-A-747796, usually have at least one device for interrupting the outlet of high pressure gas, a pressure regulator, a flow and pressure adjustment system, and a connector for the gas outlet to which the user can connect.
Le dispositif d'interruption de la sortie de gaz haute pression se compose principalement soit du clapet du détendeur lorsque l'ensemble robinet- détendeur ne comporte qu'un seul clapet, soit d'un clapet distinct du clapet de détente, lorsque l'ensemble robinet-détendeur comporte plusieurs clapets, en général deux clapets.The device for interrupting the high-pressure gas outlet consists mainly of either the valve of the regulator when the valve-regulator assembly has only one valve, or of a valve separate from the expansion valve, when the assembly valve-regulator comprises several valves, in general two valves.
Lorsque l'opérateur souhaite obtenir du gaz, il doit alors obligatoirement réaliser deux, voire trois, manipulations successives, à savoir le branchement d'un raccord de sortie de gaz au corps de l'ensemble robinet-détendeur, l'ouverture du gaz par manipulation d'un robinet ou d'un levier de commande de la sortie de gaz et éventuellement un réglage du débit et/ou de la pression du gaz jusqu'à la valeur souhaitée.When the operator wishes to obtain gas, he must then perform two or even three successive manipulations, namely the connection of a gas outlet connection to the body of the valve-regulator assembly, the opening of the gas by handling a tap or a control lever the gas outlet and possibly an adjustment of the gas flow and / or pressure to the desired value.
Or, pour un certain nombre d'utilisations ou d'applications, ces manipulations ou opérations successives de l'ensemble robinet-détendeur par l'opérateur peuvent engendrer :However, for a certain number of uses or applications, these manipulations or successive operations of the valve-regulator assembly by the operator can generate:
- un risque d'erreur donnant lieu à des dysfonctionnements, notamment de la part d'utilisateurs n'ayant pas ou peu de connaissances techniques, ce qui est le cas, en particulier, dans l'application au soutirage de CO2 puisque les utilisateurs de CO2 sous forme conditionné sont notamment des propriétaires ou gérants de débits de boissons, telle la bière ou les autres boissons pétillantes servies à la pression dans ce type d'établissements, et- a risk of error giving rise to malfunctions, in particular on the part of users having little or no technical knowledge, which is the case, in particular, in the application to the withdrawal of CO 2 since the users CO 2 in conditioned form are notably owners or managers of drinking establishments, such as beer or other sparkling drinks served on tap in this type of establishment, and
- un temps de mise en œuvre significatif du gaz qui peut parfois s'avérer assez long jusqu'à obtenir le résultat souhaité.- a significant implementation time for the gas which can sometimes be quite long until the desired result is obtained.
Par ailleurs, un ensemble robinet-détendeur comprenant tous les dispositifs et éléments constitutifs susmentionnés a un coût de fabrication élevé qui pénalise et ralentit la diffusion à grande échelle de ce type d'ensemble robinet-détendeur et ce, bien qu'il soit reconnu que le concept d'ensemble robinet-détendeur contribue fortement à améliorer la sécurité et la simplicité de la mise en œuvre du gaz conditionné. Le but de la présente invention est alors de résoudre les problèmes ci- dessus en proposant un ensemble robinet-détendeur plus simple d'utilisation que les ensembles robinets-détendeurs classiques, même pour les utilisateurs n'ayant pas de connaissance technique particulière, grâce à une diminution du nombre d'opérations à réaliser lors du soutirage du gaz par l'utilisateur et qui soit, en outre, de coût de fabrication nettement moindre qu'un ensemble robinet-détendeur de l'art antérieur.Furthermore, a valve-regulator assembly comprising all the aforementioned devices and components has a high manufacturing cost which penalizes and slows down the large-scale distribution of this type of valve-regulator assembly, although it is recognized that the concept of valve-regulator greatly contributes to improving the safety and simplicity of the use of conditioned gas. The aim of the present invention is then to solve the above problems by proposing a valve-regulator assembly that is easier to use than conventional valve-regulator assemblies, even for users who have no particular technical knowledge, thanks to a reduction in the number of operations to be carried out when the gas is drawn off by the user and which, moreover, has a significantly lower manufacturing cost than a valve-regulator assembly of the prior art.
La solution à ce problème consiste alors en un ensemble robinet- détendeur de fluide à détente préréglée comprenant :The solution to this problem then consists of a valve-pressure reducing valve assembly with preset expansion comprising:
- un corps principal au sein duquel est aménagé au moins un premier passage interne de fluide entre au moins un orifice d'entrée de fluide à une première valeur de pression et au moins un orifice de sortie de fluide à la valeur de pression fixe souhaitée,a main body within which at least a first internal fluid passage is arranged between at least one fluid inlet orifice at a first pressure value and at least one fluid outlet orifice at the desired fixed pressure value,
- des moyens de détente de fluide agencés dans ou sur au moins une partie dudit passage interne de fluide, entre lesdits orifice d'entrée et orifice de sortie, les moyens de détente de fluide étant adaptés pour assurer une détente du fluide depuis ladite première valeur de pression jusqu'à la valeur de pression préfixée, lesdits moyens de détente de fluide comprenant un clapet (19) de détente positionné dans une position de détente fixe et non modifiable par l'utilisateur correspondant à ladite valeur de pression préfixée, et - un raccord de sortie apte à délivrer ledit fluide après détente à la valeur de pression fixe préréglée,- fluid expansion means arranged in or on at least part of said internal fluid passage, between said inlet and outlet orifice, the fluid expansion means being adapted to ensure expansion of the fluid from said first value of pressure up to the preset pressure value, said fluid expansion means comprising a relief valve (19) positioned in a fixed expansion position and not modifiable by the user corresponding to said preset pressure value, and - a outlet fitting capable of delivering said fluid after expansion to the preset fixed pressure value,
- et selon lequel le premier passage interne de fluide débouchant à l'extrémité de sortie du raccord portant l'orifice de sortie de fluide détendu, et- And according to which the first internal passage of fluid emerging at the outlet end of the connector carrying the expanded fluid outlet orifice, and
- le raccord de sortie comprenant, aménagé sur ledit premier passage interne de fluide, au moins un clapet de raccord mobile en translation dans ledit premier passage interne.- The outlet fitting comprising, arranged on said first internal fluid passage, at least one movable connection valve in translation in said first internal passage.
Selon le cas, l'ensemble robinet-détendeur de fluide à détente préréglée comprend les caractéristiques suivantes :Depending on the case, the preset regulating fluid valve-regulator assembly includes the following characteristics:
- lesdits moyens de détente de fluide permettent d'assurer une détente du fluide jusqu'à une valeur de pression préfixée comprise entre 3 bars et 12 bars, de préférence encore entre 4 bars et 10 bars ;- Said fluid expansion means make it possible to provide expansion of the fluid to a prefixed pressure value of between 3 bars and 12 bars, more preferably between 4 bars and 10 bars;
- le clapet de raccord se déplace en translation dans le raccord de sortie, lorsqu'on connecte audit raccord une prise de sortie utilisateur comprenant des moyens d'actionnement du clapet de raccord qui coopèrent avec ledit clapet de manière à obtenir ledit déplacement ;- The connector valve moves in translation in the outlet connector, when connecting to said connector a user outlet socket comprising actuating means of the connector valve which cooperate with said valve so as to obtain said displacement;
- le raccord de sortie comprend, sur sa paroi périphérique externe, au moins un évidement et/ou au moins une paroi faisant saillie par rapport à au moins une partie de la surface externe dudit raccord, de préférence au moins un évidement susceptible de coopérer avec un système de guidage et verrouillage aménagé dans la prise de sortie utilisateur ; - le positionnement du clapet de détente dans ladite position de détente fixe et non modifiable par l'utilisateur se fait par l'intermédiaire d'un système d'ajustage de la valeur de détente souhaitée comprenant au moins un système vis/écrou de réglage coopérant avec un ressort de fixation de la pression apte à exercer une force de poussée sur une membrane souple portant un pousse- clapet coopérant avec le clapet de détente, de préférence ledit système d'ajustage de la valeur de détente souhaitée est au moins partiellement aménagé dans le corps de l'ensemble robinet-détendeur de manière non accessible à l'utilisateur ; - le raccord de sortie comporte plusieurs positions présentant des diamètres externes différents et comprend, par ailleurs, un moyen à ressort de clapet coopérant avec le clapet de raccord, et au moins une garniture et une portée permettant d'obtenir une étanchéité fluidique de l'orifice de sortie de fluide porté par le raccord ; - les moyens de détente de fluide sont adaptés et/ou les dimensions d'au moins une partie du premier passage interne de fluide et/ou de l'orifice de sortie de fluide sont choisis de manière à assurer une sortie de fluide après détente à un débit fixe prédéterminé ;- The outlet fitting comprises, on its external peripheral wall, at least one recess and / or at least one wall projecting with respect to at least part of the external surface of said fitting, preferably at least one recess capable of cooperating with a guidance and locking system arranged in the user outlet socket; the positioning of the expansion valve in said fixed expansion position which cannot be modified by the user is done by means of an adjustment system of the desired expansion value comprising at least one cooperating adjustment screw / nut system with a pressure fixing spring capable of exerting a pushing force on a flexible membrane carrying a valve pusher cooperating with the expansion valve, preferably said system for adjusting the desired expansion value is at least partially arranged in the body of the valve-regulator assembly not accessible to the user; - The outlet connector has several positions having different external diameters and further comprises a valve spring means cooperating with the connector valve, and at least one gasket and a seat making it possible to obtain a fluid tightness of the fluid outlet port carried by the fitting; the fluid expansion means are adapted and / or the dimensions of at least part of the first internal fluid passage and / or of the fluid outlet orifice are chosen so as to ensure fluid outlet after expansion at a predetermined fixed flow;
- le corps comporte, par ailleurs, une valve de remplissage comportant un deuxième passage interne de fluide relié audit premier passage interne de fluide,the body also comprises a filling valve comprising a second internal fluid passage connected to said first internal fluid passage,
- le corps comporte en outre un embout de connexion apte à assurer une fixation du corps sur une source de fluide sous pression, ledit embout de connexion portant l'orifice d'entrée de fluide à la première valeur de pression. - le corps comporte, par ailleurs, un système de sécurité muni d'un disque de rupture aménagé de façon étanche sur un troisième passage interne de fluide reliant le premier passage interne à l'atmosphère ambiant, ledit disque de rupture étant apte à se rompre lorsque la pression du fluide s'exerçant au contact dudit disque de rupture et dans le passage interne atteint une valeur de pression maximale prédéterminée de manière à libérer le fluide à l'atmosphère. L'invention concerne aussi un procédé de raccordement d'une prise de sortie utilisateur à un ensemble dans lequel on procède selon les étapes successives suivantes : a) mise en position de la prise de sortie utilisateur sur le raccord de sortie par enfichage en translation de la prise sur ledit raccord par un utilisateur, b) continuer l'insertion de la prise sur le raccord de manière à obtenir une étanchéité fluidique progressive grâce à une coopération par l'intermédiaire d'une garniture étanche aménagée dans la prise et la paroi externe de l'extrémité de sortie cylindrique du raccord, c) après obtention de l'étanchéité fluidique, ouverture progressive des clapets de la prise et du raccord, respectivement, lesdits clapets coopérant l'un avec l'autre en se repoussant mutuellement l'un et l'autre selon des mouvements de translation de directions opposées selon l'axe du raccord et de la prise, d) verrouillage solidaire du système de verrouillage de la prise sur le raccord, et e) circulation du fluide à la pression de détente préréglée du raccord vers la prise de sortie. Pour déconnecter la prise du raccord, on procède de façon inverse, comme expliqué ci-après.- The body further comprises a connection endpiece capable of ensuring a fixing of the body on a source of pressurized fluid, said connection endpiece carrying the fluid inlet orifice at the first pressure value. - The body also comprises a safety system provided with a rupture disc fitted in a sealed manner on a third internal passage of fluid connecting the first internal passage to the ambient atmosphere, said rupture disc being capable of rupturing when the pressure of the fluid exerted in contact with said rupture disc and in the internal passage reaches a predetermined maximum pressure value so as to release the fluid to the atmosphere. The invention also relates to a method of connecting a user outlet socket to an assembly in which the following successive steps are carried out: a) positioning the user outlet socket on the outlet connector by plugging in translation of the socket on said fitting by a user, b) continue the insertion of the socket on the fitting so as to obtain a progressive fluid tightness thanks to cooperation by means of a leaktight fitting arranged in the socket and the external wall from the cylindrical outlet end of the connector, c) after obtaining the fluid tightness, progressive opening of the plug valves and of the connector, respectively, said valves cooperating with each other by repelling each other and the other in translational movements of opposite directions along the axis of the connector and of the socket, d) integral locking of the locking system of the socket on the fitting, and e) circulation of the fluid at the preset expansion pressure from the fitting to the outlet. To disconnect the plug from the fitting, proceed in reverse, as explained below.
Selon un autre aspect, l'invention porte aussi sur un système de transfert de fluide comprenant :According to another aspect, the invention also relates to a fluid transfer system comprising:
- un ensemble robinet-détendeur de fluide selon l'invention, et - une prise de sortie de fluide comportant un corps dans lequel est aménage un système de guidage et de verrouillage interne servant à recevoir et guider l'extrémité du raccord de sortie de l'ensemble robinet-détendeur et, en outre, à empêcher la déconnexion de la prise dudit raccord en venant coopérer avec un évidement ménagé dans la paroi périphérique externe du raccord, ladite prise comprenant, par ailleurs, un clapet de prise venant normalement prendre appui contre un siège de clapet et déplaçable en translation selon l'axe longitudinal de la prise.- a fluid valve-regulator assembly according to the invention, and - a fluid outlet socket comprising a body in which is fitted an internal guidance and locking system used to receive and guide the end of the outlet connector of the valve-regulator assembly and, moreover, to prevent the disconnection of the socket from said fitting by cooperating with a recess formed in the external peripheral wall of the fitting, said socket further comprising a tap valve coming normally lean against a valve seat and movable in translation along the longitudinal axis of the socket.
L'invention concerne aussi un récipient de fluide sous pression, en particulier une bouteille de gaz, équipée d'un ensemble robinet-détendeur selon l'invention, de préférence ledit ensemble est inséré dans et protégé par un capotage de protection monté sur le récipient.The invention also relates to a container of pressurized fluid, in particular a gas cylinder, equipped with a valve-regulator assembly according to the invention, preferably said assembly is inserted into and protected by a protective cover mounted on the container. .
La présente invention va maintenant être mieux comprise grâce à la description détaillée qui suit, donnée en références aux figures annexées. La figure 1 représente une vue en coupe longitudinale d'un ensemble robinet- détendeur selon l'invention selon un premier angle de vue, et la figure 2 représente une vue en coupe longitudinale de l'ensemble robinet-détendeur de la figure 1 selon un deuxième angle de vue décalé d'environ 90° du premier angle de vue.The present invention will now be better understood thanks to the detailed description which follows, given with reference to the appended figures. FIG. 1 represents a view in longitudinal section of a valve-regulator assembly according to the invention according to a first angle of view, and FIG. 2 represents a view in longitudinal section of the valve-regulator assembly of FIG. 1 according to a second viewing angle offset by approximately 90 ° from the first viewing angle.
Sur ces figures, on voit un ensemble robinet-détendeur selon l'invention dont le corps 1 renferme une partie faisant office de détendeur préréglé à une pression donnée, par exemple 8 bars, non modifiable par l'utilisateur.In these figures, we can see a valve-regulator assembly according to the invention, the body 1 of which contains a part acting as a regulator preset at a given pressure, for example 8 bars, which cannot be modified by the user.
Plus précisément, la partie du corps 1 faisant office de détendeur comporte plusieurs composantes coopérant les unes avec les autres pour permettre la fixation de la pression fixe désirée, à savoir notamment un système vis/écrou 4 de réglage, une pièce 6 servant de poussée de ressort, un ressort 7 de fixation de la pression, et une membrane souple 8 portant un pousse-clapet 3, un clapet 19 de détente, un siège de clapet 20 et un ressort 22 de clapet.More specifically, the part of the body 1 acting as a pressure reducer comprises several components cooperating with each other to allow the fixing of the desired fixed pressure, namely in particular a screw / nut adjustment system 4, a part 6 serving as thrust spring, a spring 7 for fixing the pressure, and a flexible membrane 8 carrying a valve pusher 3, a relief valve 19, a valve seat 20 and a valve spring 22.
Le réglage de Impression à sa valeur fixe souhaitée, par exemple 8 bars,Setting Print to its desired fixed value, for example 8 bars,
"*§& Mtâ*ne fois pour toute grâce au système vis/écrou 4 de réglage est mobile *» translation et qui, sous l'effet d'un vissage vient appuyer et donc exercer une (de la- droite vers la gauche sur la figure 2) sur la pièce 6 servant de poussée de ressort qui transmet alors cette force de poussée au ressort 7 de fixation de la pression, lequel ressort 7 coopère avec la membrane 8 souple en jr e rçant, à son tour, une force de poussée tendant à déformer cette membrane 8, ce qui conduit à un déplacement du pousse-clapet 3 (de la droite vers la gauche sur la figure 2) lequel va alors exercer une pression sur le clapet 19 de détente dans le sens tendant à l'éloigner de son siège de clapet 20 et permettre ainsi au fluide sous pression de passer au travers de l'orifice 21 de détente en y subissant une détente plus ou moins importante, c'est-à-dire une détente à la valeur de pression préfixée mais non modifiable par l'utilisateur. Dit autrement, l'utilisateur ne peut ajuster la pression délivrée par l'ensemble robinet-détendeur de l'invention ; cette pression est fixée une fois pour toute et le gaz délivré est donc toujours délivré à la même pression, typiquement de 4 à 12 bars."* § & Mtâ * not once and for all thanks to the screw / nut system 4 of adjustment is mobile *" translation and which, under the effect of a screwing comes to press and therefore exert a (from the right to the left in FIG. 2) on the part 6 serving as a spring push which then transmits this push force to the pressure fixing spring 7, which spring 7 cooperates with the flexible membrane 8 in jr e grooving, in turn, a pushing force tending to deform this membrane 8, which leads to a displacement of the valve valve 3 (from right to left in Figure 2) which will then exert pressure on the valve 19 of relaxation in the direction tending to move it away from its valve seat 20 and thus allow the fluid under pressure to pass through the orifice 21 of relaxation by undergoing a more or less significant relaxation, that is to say - say a trigger to the pressure value prefixed but not modifiable by the user. In other words, the user cannot adjust the pressure delivered by the valve-regulator assembly of the invention; this pressure is fixed once and for all and the gas delivered is therefore always delivered at the same pressure, typically from 4 to 12 bars.
Normalement, le clapet 19 de détende tend à être repoussé contre le siège 20 de clapet par l'intermédiaire d'un ressort 22 de clapet, exerçant une poussée allant de la gauche vers la droite sur la figure 2, de manière à engendrer une obturation de l'orifice de détente 21.Normally, the pressure relief valve 19 tends to be pushed against the valve seat 20 by means of a valve spring 22, pushing from left to right in FIG. 2, so as to cause a closure. of the expansion orifice 21.
Une autre force agissant sur le clapet 19 de gauche à droite est générée par le gaz à haute pression dans la chambre 24, ladite force étant proportionnelle à la section de l'orifice de détente 21.Another force acting on the valve 19 from left to right is generated by the high pressure gas in the chamber 24, said force being proportional to the section of the expansion orifice 21.
Encore une autre force poussant la membrane 8 de gauche à droite résulte de la pression du gaz dans la chambre basse pression 25 ; cette force est proportionnelle à la pression de gaz dans la chambre et au diamètre de la membrane 8. Si la pression dans la chambre basse pression 25 dépasse une valeur donnée, l'effet global de toutes les forces mentionnées ci-dessus est de fermer le clapet 19 qui devient étanche sur son siège 20.Yet another force pushing the membrane 8 from left to right results from the pressure of the gas in the low pressure chamber 25; this force is proportional to the gas pressure in the chamber and to the diameter of the membrane 8. If the pressure in the low pressure chamber 25 exceeds a given value, the overall effect of all the forces mentioned above is to close the valve 19 which becomes waterproof on its seat 20.
Lorsque la pression dans la chambre basse pression 25 diminue jusqu'à une valeur préfixée, normalement sous l'effet du débit de gaz vers l'aval de l'appareil, l'effet global de toutes les forces mentionnées ci-dessus est d'ouvrir le clapet 19, le gaz passe alors de la chambre à haute pression 24 à celle à basse pression 25. La pression dans la chambre 25 à basse pression va alors augmenter jusqu'à dépasser à nouveau la valeur donnée susmentionnée et le cycle va alors se répéter. Par ailleurs, afin d'empêcher toute mauvaise manipulation de l'utilisateur ou toute modification éventuelle de la pression de détente, l'accès au système vis/écrou 4 est normalement caché ou obturé par un moyen de protection 5, tel un bouchon protecteur ou analogue.When the pressure in the low pressure chamber 25 decreases to a preset value, normally under the effect of the gas flow downstream of the device, the overall effect of all the forces mentioned above is open the valve 19, the gas then passes from the high pressure chamber 24 to the low pressure chamber 25. The pressure in the low pressure chamber 25 will then increase until it again exceeds the given value given above and the cycle will then to repeat. Furthermore, in order to prevent any improper handling by the user or any possible modification of the trigger pressure, access to the system screw / nut 4 is normally hidden or closed by a protective means 5, such as a protective cap or the like.
Dans un souci de sécurité, le corps 1 est aussi équipé d'un système antisurpression comprenant un disque de rupture 11 maintenu par un écrou de fixation 10, lequel disque 11 de rupture à pour fonction de se rompre si la pression de fluide devient trop importante, par exemple si la pression atteint une valeur fixée entre 170 bars et 200 bars, ce qui permet alors au gaz de s'échapper à l'atmosphère par le passage 18 et les fenêtres du passage 23, et évite le risque de détérioration de la bouteille ou de la partie haute pression de l'ensemble robinet-détendeur.For safety reasons, the body 1 is also equipped with an anti-pressurization system comprising a rupture disc 11 held by a fixing nut 10, which rupture disc 11 has the function of rupturing if the fluid pressure becomes too high , for example if the pressure reaches a value fixed between 170 bars and 200 bars, which then allows the gas to escape to the atmosphere through the passage 18 and the windows of the passage 23, and avoids the risk of deterioration of the cylinder or the high pressure part of the valve-regulator assembly.
Le corps 1 comprend, par ailleurs, une prise ou un raccord 12 de sortie de gaz à obturation permettant une connection et une déconnexion facile et rapide de l'utilisateur à cet ensemble robinet-détendeur de manière à pouvoir récupérer et utiliser ensuite le gaz détendu à ladite pression prédéterminée dans ladite partie détendeur.The body 1 further comprises a plug or connector 12 for closing the gas outlet allowing an easy and rapid connection and disconnection of the user to this valve-regulator assembly so as to be able to recover and then use the expanded gas. at said predetermined pressure in said regulator part.
Dit autrement, l'ouverture du gaz cheminant dans le corps 1 de l'ensemble robinet-détendeur est commandée en aval de la partie détendeur et est synchronisée avec le branchement de la prise de sortie par l'utilisateur sur le raccord 12 de sortie de gaz comme détaillé ci-après et illustré sur les figures 3 à 5.In other words, the opening of the gas passing through the body 1 of the valve-regulator assembly is controlled downstream of the regulator part and is synchronized with the connection of the outlet socket by the user to the outlet connector 12 of gas as detailed below and illustrated in Figures 3 to 5.
La connexion de cette prise au raccord de sortie de gaz permet d'obtenir, outre le branchement proprement-dit, une étanchéité suivie d'une libération du gaz à la pression voulue.The connection of this socket to the gas outlet connection makes it possible to obtain, in addition to the actual connection, a seal followed by a release of the gas at the desired pressure.
Par ailleurs, le remplissage d'une bouteille de gaz équipée de ce type d'ensemble robinet-détendeur peut se faire sans démonter l'ensemble et ce, simplement en alimentant la valve de remplissage 13 avec du gaz sous pression, lequel chemine alors à travers le corps 1 , par l'intermédiaire du passage interne 50 reliant ladite valve 13 de remplissage à l'embout 15 de connexion permettant de fixer l'ensemble robinet-détendeur sur le col d'une bouteille de gaz, par l'intermédiaire du passage interne 51 de gaz traversant axialement l'embout 15 de connection. La fixation du corps 1 de l'ensemble robinet-détendeur sur la bouteille se fait en général par vissage de l'embout 15 sur le col de ladite bouteille au moyen d'un filetage 16 porté sur la paroi externe de l'embout 15 de connection et d'un taraudage réciproque aménagé sur la paroi interne du col de la bouteille.Furthermore, the filling of a gas cylinder equipped with this type of valve-regulator assembly can be done without dismantling the assembly, and this, simply by supplying the filling valve 13 with pressurized gas, which then travels to through the body 1, by means of the internal passage 50 connecting said filling valve 13 to the connection nozzle 15 making it possible to fix the valve-regulator assembly on the neck of a gas bottle, by means of the internal gas passage 51 passing axially through the connection endpiece 15. The body 1 of the valve-regulator assembly is fixed to the bottle in general by screwing the end piece 15 onto the neck of said bottle by means of a thread 16 carried on the external wall of the end piece 15 of connection and a reciprocal tapping arranged on the internal wall of the neck of the bottle.
Grâce à ce type d'ensemble robinet-détendeur, la mise en œuvre du gaz est réduite à une seule opération simple et rapide, contre deux ou trois opérations avec les ensembles robinets-détendeurs classiques.Thanks to this type of valve-regulator assembly, the implementation of gas is reduced to a single simple and rapid operation, against two or three operations with conventional valve-regulator assemblies.
Si le raccord côté utilisateur alimentant le circuit de gaz de l'utilisateur est aussi du type à obturation, l'utilisation d'un ensemble robinet-détendeur selon l'invention assure aussi la conservation de la qualité du gaz dans le circuit utilisateur.If the connection on the user side supplying the user's gas circuit is also of the shutter type, the use of a valve-regulator assembly according to the invention also ensures the preservation of the quality of the gas in the user circuit.
Les figures 3 et 4 représentent une vue en coupe longitudinale du raccord 12 de sortie de l'ensemble robinet-détendeur de l'invention sur lequel vient se connecter la prise 100 utilisateur qui peut revêtir des formes de réalisation différentes, telle qu'une prise 100 avec bague ou anneau 64 de fixation comme montré sur la figure 3 ou une prise 100 avec bouton 74 de commande illustrée sur la figure 4.Figures 3 and 4 show a longitudinal sectional view of the outlet connector 12 of the valve-regulator assembly of the invention to which is connected the socket 100 user which can take different embodiments, such as a socket 100 with fixing ring or ring 64 as shown in FIG. 3 or a socket 100 with control button 74 illustrated in FIG. 4.
Plus précisément, sur la figure 3, on voit que la prise 100 utilisateur vient s'enficher sur le raccord 12 de sortie par l'intermédiaire de son extrémité de fixation 101 qui comporte un logement 102 destiné à recevoir l'extrémité en saillie du raccord 12. Le logement 102 de la prise 100 comprend un système de guidage et verrouillage 65 interne servant, d'une part, à recevoir et guider l'extrémité 35 du raccord 12 et, d'autre part, à empêcher la déconnexion de la prise 100 du raccord 12 en venant coopérer avec un évidement ou une gorge 36 situé périphériquement sur le raccord 12 qui a une forme générale cylindrique et ou, selon le cas, avec une paroi 37 faisant saillie par rapport à la surface du raccord 12.More specifically, in FIG. 3, it can be seen that the user outlet 100 is plugged onto the outlet connector 12 via its fixing end 101 which includes a housing 102 intended to receive the projecting end of the connector. 12. The housing 102 of the socket 100 includes an internal guidance and locking system 65 serving, on the one hand, to receive and guide the end 35 of the connector 12 and, on the other hand, to prevent the disconnection of the socket. 100 of the connector 12 coming to cooperate with a recess or a groove 36 located peripherally on the connector 12 which has a generally cylindrical shape and or, as the case may be, with a wall 37 projecting from the surface of the connector 12.
Par ailleurs, la prise 100 utilisateur comprend aussi un clapet 79 de prise muni d'une portion 60 en saillie venant normalement prendre appui contre un siège 63 de clapet de manière à obturer le passage de fluide de la prise au moyen de la portion 60 en saillie portée par le clapet 79. Un moyen élastique, tel un ressort 61 , exerce une force de poussée sur la partie arrière du clapet 79 tendant à le repousser vers son siège 63. Lorsque le clapet 79 est décollé de son siège 63, le fluide peut circuler dans la prise 100 depuis son extrémité d'entrée 101 , à travers le passage de fluide duquel est alors extraite la portion en saillie 60 du clapet 79, et est évacué via le passage 73 de la prise 100.Furthermore, the outlet 100 user also comprises a valve 79 of outlet provided with a projecting portion 60 normally coming to bear against a seat 63 of valve so as to close the passage of fluid from the outlet to means of the projecting portion 60 carried by the valve 79. An elastic means, such as a spring 61, exerts a pushing force on the rear part of the valve 79 tending to push it back towards its seat 63. When the valve 79 is detached from its seat 63, the fluid can circulate in the outlet 100 from its inlet end 101, through the fluid passage from which the protruding portion 60 is then extracted from the valve 79, and is evacuated via the passage 73 of the outlet 100 .
Une garniture 62 permet d'obtenir une étanchéité entre le raccord 12 et la prise 100, lorsqu'ils sont connectés l'un à l'autre.A gasket 62 makes it possible to obtain a seal between the connector 12 and the socket 100, when they are connected to each other.
En outre, la bague 64 de fixation, aménagée en périphérie du corps de la prise 100, coopère notamment avec un second ressort 78 ou moyen élastique qui exerce une poussée sur le système de guidage et de verrouillage 65, de manière à pouvoir dissocier la prise 100 du raccord 12 en libérant le système de verrouillage 65 de la gorge 36. En effet, lorsque l'utilisateur actionne en translation la bague 64 (de la droite vers la gauche sur la figure 3), celle-ci va exercer une force de poussée (en 77) sur le deuxième ressort 78 laquelle, tend à s'opposer à celle dudit ressort 78 provoquant ainsi sa compression, laquelle permet la libération du système de verrouillage 65 de la gorge 36. Le système de verrouillage 65 comprend, par exemple, un ou plusieurs rouleaux. Par ailleurs, le raccord 12 comprend, quant à lui, aussi un clapet de raccord 30 et un ressort 33 de clapet, ainsi qu'une garniture 31 venant étancher l'orifice de sortie du fluide au niveau d'une portée 32.In addition, the fixing ring 64, arranged on the periphery of the body of the socket 100, cooperates in particular with a second spring 78 or elastic means which exerts a thrust on the guide and locking system 65, so as to be able to dissociate the socket 100 of the fitting 12 by releasing the locking system 65 from the groove 36. In fact, when the user actuates the ring 64 in translation (from right to left in FIG. 3), the latter will exert a force of thrust (at 77) on the second spring 78 which tends to oppose that of said spring 78 thereby causing its compression, which allows the release of the locking system 65 from the groove 36. The locking system 65 comprises, for example , one or more rollers. Furthermore, the connector 12 also includes a connector valve 30 and a valve spring 33, as well as a gasket 31 sealing the fluid outlet orifice at a surface 32.
Le fonctionnement de l'ensemble prise 100/raccord 12 est le suivant. La mise en position de la prise 100 sur le raccord 12 et le détrompage lié au profil spécifique de l'ensemble sont réalisés par enfichage en translation de la prise 100 utilisateur sur le raccord 12 de sortie de l'ensemble robinet- détendeur.The operation of the socket 100 / fitting 12 assembly is as follows. The positioning of the socket 100 on the connector 12 and the polarization linked to the specific profile of the assembly are carried out by plugging in translation of the socket 100 user on the outlet connector 12 of the valve-regulator assembly.
Ensuite, l'étanchéité est obtenue progressivement en continuant l'insertion de la prise 100 par l'intermédiaire de la garniture 62 de la prise sur l'extrémité 35 de sortie cylindrique du raccord 12. Lorsque l'étanchéité est réalisée, il s'opère une ouverture progressive des clapets 79 et 30 de la prise 100 et du raccord 12, respectivement, lesdits clapets 79 et 30 coopérant l'un avec l'autre en se repoussant mutuellement l'un et l'autre de manière synchronisée ou, selon le cas, successivement l'un après l'autre.Then, the seal is obtained gradually by continuing the insertion of the socket 100 by means of the lining 62 of the socket on the end 35 of the cylindrical outlet of the connector 12. When the seal is achieved, there is a gradual opening of the valves 79 and 30 of the socket 100 and of the connector 12, respectively, said valves 79 and 30 cooperating with each other by repelling each other and the other synchronously or, as the case may be, successively one after the other.
Par ailleurs, le système de verrouillage 65 vient jouer son rôle de manière à permettre une fixation solidaire de la prise 100 sur le raccord 12. Dès lors, les clapets 30 et 79 étant décollés de leurs sièges respectifs, le cycle de détente à la pression souhaitée préfixée (par exemple 8 bars) peut alors commencer et le fluide détendeur chemine alors de l'ensemble robinet- détendeur vers la prise 100 utilisateur et est ensuite acheminé, via des moyens adaptés, notamment des canalisations, flexibles ou analogues, jusqu'au site d'utilisation du gaz.Furthermore, the locking system 65 comes to play its role so as to allow an integral fixing of the socket 100 on the connector 12. Consequently, the valves 30 and 79 being detached from their respective seats, the expansion cycle under pressure desired prefixed (for example 8 bars) can then start and the regulating fluid then travels from the valve-regulator assembly to the user outlet 100 and is then conveyed, via suitable means, in particular pipes, flexible or the like, to the gas use site.
A l'inverse la déconnexion peut être réalisée en procédant de manière inversée, c'est-à-dire en commençant par déverrouiller les moyens de verrouillage 65 comme expliqué ci-avant.Conversely, the disconnection can be achieved by proceeding in reverse, that is to say by starting by unlocking the locking means 65 as explained above.
Lors de la déconnexion, la pression du gaz et les forces exercées par les ressorts de clapets s'additionnent pour permettre une fermeture rapide des clapets et éviter ainsi les pertes de gaz et ce, avant toute rupture d'étanchéité et avant déconnexion proprement dite.During disconnection, the gas pressure and the forces exerted by the valve springs add up to allow rapid closure of the valves and thus avoid gas losses, before any seal break and before actual disconnection.
La figure 4 montre, quant à elle, un second mode de réalisation possible de la prise 100 utilisateur se différenciant d'une par, par un système à boutonFIG. 4 shows, for its part, a second possible embodiment of the user socket 100, differentiating on the other hand, by a button system
45 en lieu et place de la bague 64 de la figure 3 et, d'autre part, par la présence d'une pièce à crochet 46 de verrouillage en lieu et place du système à rouleaux 45 de la figure 3. Pour obtenir la fixation de la prise 100 sur le raccord 12, dans ce cas, la pièce 46 à crochet vient s'accrocher dans la gorge 36 du raccord 12. A l'inverse, la libération par l'opérateur de la pièce 46 à crochet se fait en appuyant sur le système à bouton 45 qui coopère avec ladite pièce à crochet45 in place of the ring 64 of FIG. 3 and, on the other hand, by the presence of a hook piece 46 for locking in place of the roller system 45 of FIG. 3. To obtain the fixing from the socket 100 on the connector 12, in this case, the hook piece 46 hooks into the groove 36 of the connector 12. Conversely, the operator releases the hook piece 46 by pressing the button system 45 which cooperates with said hook piece
46 en exerçant sur celle-ci une force radiale dirigée vers l'extérieur de la prise 100 de manière à obtenir son désengagement de la gorge 36. Par ailleurs, la figure 5 schématise la prise 100 de la figure 4 représentée en position accouplée au raccord 12 du robinet-détendeur.46 by exerting on the latter a radial force directed towards the outside of the grip 100 so as to obtain its disengagement from the groove 36. Furthermore, Figure 5 shows schematically the outlet 100 of Figure 4 shown in the coupled position to the connector 12 of the pressure reducing valve.
Sur les figures 4 et 5, on voit également que la prise 100 utilisateur comporte un dispositif mobile 70, telle une valve, empêchant le retour ou le reflux de fluide de la prise 100 vers l'ensemble robinet-détendeur.In FIGS. 4 and 5, it can also be seen that the user outlet 100 includes a mobile device 70, such as a valve, preventing the return or backflow of fluid from the outlet 100 to the valve-regulator assembly.
La figure 6 montre une vue de côté du raccord 12 munie d'un ou plusieurs évidements 34 portés par sa paroi périphérique externe et permettant d'éviter le montage du raccord 12 par une personne non habilitée.FIG. 6 shows a side view of the connector 12 provided with one or more recesses 34 carried by its external peripheral wall and making it possible to avoid the fitting of the connector 12 by an unauthorized person.
Selon l'Invention, l'ensemble robinet-détendeur de fluide à détente préréglée ne comporte donc pas d'organe de manœuvre manipulable par l'utilisateur et permettant de modifier le niveau de pression de gaz délivrée par cet ensemble ; la pression délivrée par cet ensemble est donc fixe et approximativement constante. According to the invention, the valve-pressure reducing valve assembly with preset expansion therefore does not include an operating member which can be manipulated by the user and which makes it possible to modify the level of gas pressure delivered by this assembly; the pressure delivered by this assembly is therefore fixed and approximately constant.

Claims

REVENDICATIONS
1. Ensemble robinet-détendeur de fluide à détente préréglée comprenant : - un corps principal au sein duquel est aménagé au moins un premier passage interne de fluide entre au moins un orifice d'entrée de fluide à une première valeur de pression et au moins un orifice de sortie de fluide à la valeur de pression fixe souhaitée,1. Preset pressure-reducing fluid valve-regulator assembly comprising: - a main body within which at least one first internal fluid passage is arranged between at least one fluid inlet orifice at a first pressure value and at least one fluid outlet port at the desired fixed pressure value,
- des moyens de détente de fluide agencés dans ou sur au moins une partie dudit passage interne de fluide, entre lesdits orifice d'entrée et orifice de sortie, les moyens de détente de fluide étant adaptés pour assurer une détente du fluide depuis ladite première valeur de pression jusqu'à la valeur de pression préfixée, lesdits moyens de détente de fluide comprenant un clapet (19) de détente positionné dans une position de détente fixe et non modifiable par l'utilisateur correspondant à ladite valeur de pression préfixée, et- fluid expansion means arranged in or on at least part of said internal fluid passage, between said inlet and outlet orifice, the fluid expansion means being adapted to ensure expansion of the fluid from said first value of pressure up to the preset pressure value, said fluid expansion means comprising a relief valve (19) positioned in a fixed expansion position and not modifiable by the user corresponding to said preset pressure value, and
- un raccord de sortie (12) apte à délivrer ledit fluide après détente à la valeur de pression fixe préréglée,- an outlet fitting (12) capable of delivering said fluid after expansion to the preset fixed pressure value,
- et selon lequel le premier passage interne de fluide débouchant à l'extrémité (35) de sortie du raccord (12) portant l'orifice de sortie de fluide détendu, et- And according to which the first internal fluid passage opening at the outlet end (35) of the connector (12) carrying the expanded fluid outlet orifice, and
- le raccord de sortie (12) comprenant, aménagé sur ledit premier passage interne de fluide, au moins un clapet (30) de raccord mobile en translation dans ledit premier passage interne.- The outlet connector (12) comprising, arranged on said first internal fluid passage, at least one valve (30) of connector movable in translation in said first internal passage.
2. Ensemble selon la revendication 1 , caractérisé en ce que lesdits moyens de détente de fluide permettent d'assurer une détente du fluide jusqu'à une valeur de pression préfixée comprise entre 3 bars et 12 bars.2. An assembly according to claim 1, characterized in that said fluid expansion means ensure expansion of the fluid to a preset pressure value between 3 bars and 12 bars.
3. Ensemble selon l'une des revendications 1 ou 2, caractérisé en ce que le clapet (30) de raccord se déplace en translation dans le raccord (12) de sortie lorsqu'on connecte audit raccord (12) une prise (100) de sortie utilisateur comprenant des moyens d'actionnement (79) du clapet (30) de raccord qui coopèrent avec ledit clapet (30) de manière à obtenir ledit déplacement. 3. Assembly according to one of claims 1 or 2, characterized in that the fitting valve (30) moves in translation in the outlet fitting (12) when a plug (100) is connected to said fitting (12) user outlet comprising actuating means (79) of the valve (30) which cooperate with said valve (30) so as to obtain said displacement.
4. Ensemble selon l'une des revendications 1 à 3, caractérisé en ce que le raccord (12) de sortie comprend, sur sa paroi périphérique externe, au moins un évidement (36) et/ou au moins une expansion (37) faisant saillie par rapport à au moins une partie de la surface externe dudit raccord (12), de préférence au moins un évidement (36) susceptible de coopérer avec un système de guidage et verrouillage (65) aménagé dans la prise (100) de sortie utilisateur.4. Assembly according to one of claims 1 to 3, characterized in that the outlet connector (12) comprises, on its external peripheral wall, at least one recess (36) and / or at least one expansion (37) making projection relative to at least part of the external surface of said fitting (12), preferably at least one recess (36) capable of cooperating with a guidance and locking system (65) arranged in the user outlet socket (100) .
5. Ensemble selon les revendications 1 à 4, caractérisé en ce que le positionnement du clapet (19) de détente dans ladite position de détente fixe et non modifiable par l'utilisateur se fait par l'intermédiaire d'un système d'ajustage de la valeur de détente souhaitée comprenant au moins un système vis/écrou (4) de réglage coopérant avec un ressort (7) de fixation de la pression apte à exercer une force de poussée sur une membrane souple (8) portant un pousse-clapet (3) coopérant avec le clapet (19) de détente, de préférence ledit système d'ajustage de la valeur de détente souhaitée est au moins partiellement aménagé dans le corps (1) de l'ensemble robinet-détendeur de manière non accessible à l'utilisateur.5. Assembly according to claims 1 to 4, characterized in that the positioning of the expansion valve (19) in said fixed expansion position and not modifiable by the user is done by means of an adjustment system of the desired relaxation value comprising at least one adjustment screw / nut system (4) cooperating with a pressure fixing spring (7) capable of exerting a pushing force on a flexible membrane (8) carrying a valve pusher ( 3) cooperating with the expansion valve (19), preferably said adjustment system of the desired expansion value is at least partially arranged in the body (1) of the valve-regulator assembly in a manner that is not accessible to the user.
6. Ensemble selon les revendications 1 à 5, caractérisé en ce que le raccord (12) de sortie comporte plusieurs portions présentant des diamètres externes différents et comprend, par ailleurs, un moyen à ressort (33) de clapet coopérant avec le clapet (30) de raccord, et au moins une garniture (31) et une portée (32) permettant d'obtenir une étanchéité fluidique de l'orifice de sortie de fluide porté par le raccord (12).6. An assembly according to claims 1 to 5, characterized in that the outlet connector (12) comprises several portions having different external diameters and further comprises a spring means (33) of a valve cooperating with the valve (30 ) of connection, and at least one lining (31) and a bearing surface (32) making it possible to obtain a fluid tightness of the fluid outlet orifice carried by the connection (12).
7. Ensemble selon l'une des revendications 1 à 6, caractérisé en ce que les moyens de détente de fluide sont adaptés et/ou les dimensions d'au moins une partie du premier passage interne (51) de fluide et/ou de l'orifice de sortie de fluide sont choisies de manière à assurer une sortie de fluide après détente à un débit fixe prédéterminé.7. Assembly according to one of claims 1 to 6, characterized in that the fluid expansion means are adapted and / or the dimensions of at least part of the first internal passage (51) of fluid and / or of the 'fluid outlet orifice are chosen so as to ensure a fluid outlet after expansion at a predetermined fixed flow.
8. Ensemble selon l'une des revendications 1 à 7, caractérisé en ce que le corps (1) comporte, par ailleurs, une valve de remplissage (13) comportant un deuxième passage interne (50) de fluide relié audit premier passage interne (51) de fluide, et/ou en ce que le corps (1) comporte, en outre : - un embout de connexion (15) apte à assurer une fixation du corps (1) sur une source de fluide sous pression, ledit embout de connexion (15) portant l'orifice d'entrée de fluide à la première valeur de pression.8. Assembly according to one of claims 1 to 7, characterized in that the body (1) comprises, moreover, a filling valve (13) comprising a second internal passage (50) of fluid connected to said first internal passage ( 51) of fluid, and / or in that the body (1) further comprises: - A connection end piece (15) capable of ensuring a fixing of the body (1) on a source of pressurized fluid, said connection end piece (15) carrying the fluid entry orifice at the first pressure value.
9. Ensemble selon l'une des revendications 1 à 8, caractérisé en ce que le corps (1) comporte, par ailleurs, un système de sécurité muni d'un disque9. Assembly according to one of claims 1 to 8, characterized in that the body (1) comprises, moreover, a security system provided with a disc
(11) de rupture aménagé de façon étanche sur un troisième passage interne (18) de fluide reliant le premier passage interne (51) à l'atmosphère ambiant, ledit disque (11) de rupture étant apte à se rompre lorsque la pression du fluide s'exerçant au contact dudit disque (11) de rupture et dans le passage interne (18) atteint une valeur de pression maximale prédéterminée de manière à libérer le fluide à l'atmosphère.(11) rupture arranged in a sealed manner on a third internal passage (18) of fluid connecting the first internal passage (51) to the ambient atmosphere, said rupture disc (11) being capable of rupturing when the pressure of the fluid acting in contact with said rupture disc (11) and in the internal passage (18) reaches a predetermined maximum pressure value so as to release the fluid to the atmosphere.
10. Récipient de fluide sous pression, en particulier une bouteille de gaz, équipé d'un ensemble robinet-détendeur selon l'une des revendications 1 à 9, de préférence l'ensemble est inséré dans et est protégé par un capotage de protection monté sur le récipient.10. Container of pressurized fluid, in particular a gas cylinder, equipped with a valve-regulator assembly according to one of claims 1 to 9, preferably the assembly is inserted into and is protected by a protective cover mounted on the container.
1 1. Procédé de raccordement d'une prise (100) de sortie utilisateur à un ensemble selon l'une des revendications 1 à 9, dans lequel on procède selon les étapes successives suivantes : a) mise en position de la prise (100) de sortie utilisateur sur le raccord (12) de sortie par enfichage en translation de la prise (100) sur ledit raccord par un utilisateur, b) continuer l'insertion de la prise (100) sur le raccord (12) de manière à obtenir une étanchéité fluidique progressive grâce à une coopération par l'intermédiaire d'une garniture (62) étanche aménagée dans la prise (100) et la paroi externe de l'extrémité (35) de sortie cylindrique du raccord (12), c) après obtention de l'étanchéité fluidique, ouverture progressive des clapets (79, 30) de la prise (100) et du raccord (12), respectivement, lesdits clapets (79,30) coopérant l'un avec l'autre en se repoussant mutuellement l'un et l'autre selon des mouvements de translation de directions opposées selon l'axe du raccord (12) et de la prise (100), d) verrouillage solidaire du système de verrouillage (65) de la prise (100) sur le raccord (12), et e) circulation du fluide à la pression de détente préréglée du raccord (12) vers la prise (100) de sortie. 1 1. Method for connecting a user outlet socket (100) to an assembly according to one of claims 1 to 9, in which the following successive steps are carried out: a) positioning the socket (100) user outlet on the connector (12) outlet by translation translation of the plug (100) on said connector by a user, b) continue inserting the plug (100) on the connector (12) so as to obtain a progressive fluid tightness thanks to a cooperation by means of a tight packing (62) arranged in the socket (100) and the external wall of the end (35) of cylindrical outlet of the fitting (12), c) after obtaining fluid tightness, progressive opening of the valves (79, 30) of the socket (100) and of the fitting (12), respectively, said valves (79.30) cooperating with each other by repelling each other both in translational movements of opposite directions along the axis the fitting (12) and the socket (100), d) integral locking of the locking system (65) of the socket (100) on the fitting (12), and e) circulation of the fluid at the preset expansion pressure of the fitting (12) towards the outlet socket (100).
12. Système de transfert de fluide comprenant :12. Fluid transfer system comprising:
- un ensemble robinet-détendeur de fluide selon l'une des revendications 1 à 9, et- a fluid valve-regulator assembly according to one of claims 1 to 9, and
- une prise (100) de sortie de fluide comportant un corps dans lequel est aménagé un système (65) de guidage et de verrouillage interne servant à recevoir et guider l'extrémité (35) du raccord (12) de sortie de l'ensemble robinet-détendeur et, en outre, à empêcher la déconnexion de la prise (100) dudit raccord (12) en venant coopérer avec un évidement ménagé (36) dans la paroi périphérique externe du raccord (12), ladite prise (100) comprenant, par ailleurs, un clapet (79) de prise venant normalement prendre appui contre un siège (63) de clapet et deplaçable en translation selon l'axe longitudinal de la prise (100). - a fluid outlet outlet (100) comprising a body in which is fitted an internal guidance and locking system (65) used to receive and guide the end (35) of the outlet connector (12) of the assembly pressure-reducing valve and, moreover, preventing disconnection of the socket (100) from said fitting (12) by cooperating with a recess (36) in the external peripheral wall of the fitting (12), said socket (100) comprising , moreover, a plug valve (79) normally coming to bear against a valve seat (63) and displaceable in translation along the longitudinal axis of the plug (100).
EP01998155A 2000-11-29 2001-11-21 Expansion valve assembly for fluid having pre-adjusted and non-user-modifiable fixed pressure Withdrawn EP1342140A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0015410A FR2817359B1 (en) 2000-11-29 2000-11-29 FLUID VALVE-REGULATOR ASSEMBLY WITH PRESET FIXED PRESSURE AND NON-MODIFIABLE BY THE USER
FR0015410 2000-11-29
PCT/FR2001/003661 WO2002044824A2 (en) 2000-11-29 2001-11-21 Expansion valve assembly for fluid having pre-adjusted and non-user-modifiable fixed pressure

Publications (1)

Publication Number Publication Date
EP1342140A2 true EP1342140A2 (en) 2003-09-10

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ID=8857002

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EP01998155A Withdrawn EP1342140A2 (en) 2000-11-29 2001-11-21 Expansion valve assembly for fluid having pre-adjusted and non-user-modifiable fixed pressure

Country Status (6)

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EP (1) EP1342140A2 (en)
JP (1) JP3999125B2 (en)
AU (1) AU2002252776A1 (en)
CA (1) CA2429148A1 (en)
FR (1) FR2817359B1 (en)
WO (1) WO2002044824A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1750049A1 (en) 2005-08-02 2007-02-07 FRO S.p.A. Coupling with integrated check valve
FR2927397A1 (en) * 2008-02-13 2009-08-14 Yuan Mei Corp Connecting device for reducing water pressure, has mobile element automatically sliding back and forth according to change of water pressure to change space to regulate quantity of water flow for reducing or stabilizing water pressure
FR2983938A1 (en) * 2011-12-07 2013-06-14 Schrader Device for providing connection between two parts of gas circuit, has shutter units closed and opened at biased mating with connector through fixed or axially movable element, and comprising shutter mechanism or support device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE542454A (en) * 1954-11-08 1900-01-01
FR1200023A (en) * 1956-01-25 1959-12-17 Advanced fitting with automatic snap-in and automatic release
FR2440579A1 (en) * 1978-11-02 1980-05-30 Applic Gaz Sa Safety feature for gas reducing valve - has main valve reducing stage controlled by diaphragm with safety stage in output line
US4949745A (en) * 1988-12-27 1990-08-21 Air-Lock, Incorporated Clean air connector
FR2735209B1 (en) * 1995-06-08 1997-07-25 Air Liquide TAP / REGULATOR ASSEMBLY FOR GAS BOTTLE AND GAS BOTTLE PROVIDED WITH SUCH A SET

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0244824A3 *

Also Published As

Publication number Publication date
FR2817359B1 (en) 2003-09-26
FR2817359A1 (en) 2002-05-31
JP3999125B2 (en) 2007-10-31
JP2004514999A (en) 2004-05-20
WO2002044824A2 (en) 2002-06-06
AU2002252776A1 (en) 2002-06-11
WO2002044824A3 (en) 2002-10-31
CA2429148A1 (en) 2002-06-06

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