WO2008068430A1 - Pneumatic sectioning component with hysteresis<0} - Google Patents

Pneumatic sectioning component with hysteresis<0} Download PDF

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Publication number
WO2008068430A1
WO2008068430A1 PCT/FR2007/001899 FR2007001899W WO2008068430A1 WO 2008068430 A1 WO2008068430 A1 WO 2008068430A1 FR 2007001899 W FR2007001899 W FR 2007001899W WO 2008068430 A1 WO2008068430 A1 WO 2008068430A1
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WO
WIPO (PCT)
Prior art keywords
shutter
chamber
component according
pneumatic component
gas
Prior art date
Application number
PCT/FR2007/001899
Other languages
French (fr)
Inventor
Jean-Luc Mussot
Original Assignee
Ad-Venta Sarl
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Publication date
Application filed by Ad-Venta Sarl filed Critical Ad-Venta Sarl
Publication of WO2008068430A1 publication Critical patent/WO2008068430A1/en

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Classifications

    • 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
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/103—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger the sensing element placed between the inlet and outlet
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0651—One-way valve the fluid passing through the solenoid coil

Definitions

  • the present invention relates to a pneumatic component intended to be installed in a gaseous fluid circuit and allowing the opening of this circuit at a given downstream pressure lower than the closing set point for this same downstream pressure;
  • gas will be used to refer to any composition, mixture or single-component gas.
  • the technical field of the invention is that of distribution and gas mixtures.
  • the installations often comprise apparatus or devices capable of providing, from several constituents, a mixture of pre-defined constitution, which will be called in the present description under the sole designation "gas mixer".
  • a gas mixer is generally provided with an outlet buffer tank. And between the buffer reservoir placed at the outlet and the mixer assembly there is often a device comprising a downstream pressure detector with two thresholds and a solenoid valve. This device makes it possible to stop the mixer when the downstream pressure reaches a threshold that is too high to guarantee the accuracy of mixing and to put it into operation when the downstream pressure has dropped to a level below the closure threshold.
  • This known device has the disadvantage of being composed of disparate parts and connected together by rigid or flexible pipes, sources of leaks and more complex to implement and often require a power supply.
  • patent application FR 2019284 by the company Drager discloses mixing devices that use movable valves pushed by the armature attracted by the magnetic force of a magnet.
  • application FR 2138742 of the company AIRCO which describes a device, using a frame acting on a membrane; which armature alternately undergoes the influence of two magnets, which each determine two extreme positions.
  • the object of the invention is to find an alternative solution simpler and does not have the same disadvantages.
  • the problem posed is therefore to be able to produce, at the outlet of an existing mixer, a device permitting the opening of this circuit at a given downstream pressure which is lower than the closing set point value for this same pressure, preferably entirely pneumatic. device to be the simplest possible to achieve, requiring fewer parts than known devices and easy to implement.
  • a solution to the problem posed is a pneumatic component intended to be installed in a circuit of gas, in or out of a gas mixer and allowing the opening of this circuit at a downstream pressure lower than the closing setpoint value for this same downstream pressure, which comprises: a hollow body whose inner part comprises at least one room,
  • a movable and leakproof shutter on a seat situated at the inlet of said chamber, said shutter forming a stop means, sensitive to the pressure difference prevailing between each face of the shutter,
  • This means is provided by the magnetic attraction induced by at least one permanent magnet which keeps said shutter in the closed position on its seat.
  • the invention thus provides a new fully pneumatic component, simple to perform and which performs the function of opening and closing the circuit with a hysteresis by the magnetic force of a magnet. Indeed a magnetic force is induced in the valve of a shutter valve by a permanent magnet. This valve is subjected to the resultant between the magnetic attraction force and a force due to the pressure difference between each side of the valve. The attraction force is strongly dependent on the distance between the magnet and the valve. When the pressure difference is sufficient to overcome this magnetization force (which is at its maximum), the valve opens and allows the gas to pass. The attractive force then decreases sharply as the valve moves away.
  • This valve will not close when the pressure difference will decrease to a level below the magnetic force (which is at its minimum). It follows that, the upstream pressure being kept constant, the downstream pressure must go up to a level higher than that of the opening to be able to close the valve. As soon as this one goes down to its low threshold, a new cycle of opening / closing restarts.
  • the result is a new opening / closing device, very simple and arranged to be mounted directly at the outlet of a gas mixture assembly; this new device is very simple to manufacture and manufacture in large series to reduce manufacturing costs compared to current systems that use different specific components prohibiting economic solutions; the present invention makes it possible to position oneself on the existing markets with a competitive advantage, by proposing a component presenting in a unitary, compact and ergonomic form and requiring the implementation of only a minimum of parts.
  • FIG. 1 is an axial and lateral sectional view of a pneumatic component according to an embodiment of the invention and ready to be installed in series with an existing and known gas mixer.
  • the pneumatic component according to the invention comprises a hollow body 100 substantially tubular and made of compatible material and gas-tight used: its inner portion comprises at least one chamber 101 closed by a shutter 110, sealed on the seat 111 forming the inlet of bedroom.
  • a suitable means 131 such as a flexible O-ring seals the valve.
  • An inlet port 102 and an outlet port 103 make it possible to connect this component to the gas circuit concerned.
  • the shutter 110 is a movable valve freely sliding along a longitudinal axis in the chamber 101. This valve moving longitudinally just close or open the orifice located at the the inlet of the chamber 101.
  • This valve 110 is subjected on the one hand to a force due to the pressure difference between the pressure P1 prevailing upstream of the valve and the pressure P2 prevailing downstream in the This pressure force, variable and which depends essentially on the downstream pressure P2 when the upstream pressure P1 is kept constant, tends to open the valve 110.
  • a permanent magnet 113 is placed at the inlet of the chamber 101 so as to such as to subject the movable valve 110 provided with a metal piece 112 to a magnetic force which tends to press it in the closed position on its seat 111.
  • a spring 120 also comes to bear longitudinally on the valve 110 so as to keep it in closed position on its seat 111.
  • This spring comprises any adjusting means 121 for moving longitudinally such that a thread and maintain it in its adjustment position. Thanks to the magnet 113 there is a simple way to define a pressure offset between the pressure P2 min necessary to open the valve 110 and the pressure P2 max necessary to close the valve. At rest, when the pressures P1 and P2 are almost identical, the movable valve closes the seat 111; there is no gas flow. When the downstream pressure P2 drops (following use of the downstream gas) the force due to the pressure difference P1-P2 which applies to the valve section becomes greater than the magnetic attraction forces of the magnet and recall of the spring which maintain this valve in the closed position. As a result, the valve 110 moves and controls the opening and passage of gas through the component to output.
  • the valve then closes and is again subject to the maximum magnetic attraction of the magnet 113 which keeps it closed.
  • the pressure P2 falls again as a result of downstream gas consumption, the open / close cycle occurs again.
  • the skilled person can thus define the characteristics of embodiment of the pneumatic component according to the invention, such as the implantation of the magnet, the spring force and the dimensions of the valve, so to obtain the desired opening / closing thresholds.

Abstract

Pneumatic component to be installed in a gas circuit, in or at the output of a gas mixer and allowing opening of the circuit with a P2 min downstream pressure lower than the closing set-point of P2 max for the same downstream pressure, characterized in that it comprises: a hollow body (100), the interior part of which comprises at least a chamber (101), an input opening (102) and an output opening (103), a mobile and airtight cut-off (110) on a seat (111) provided at the inlet of the said chamber (101), which is sensitive to the existing pressure P1-P2 between the two faces of the cut-off, and subjected to the magnetic attraction of a magnet (113) placed at the inlet of the chamber (101).

Description

COMPOSANT PNEUMATIQUE de sectionnement, avec hystérésis PNEUMATIC COMPONENT for sectioning, with hysteresis
La présente invention a pour objet un composant pneumatique destiné à être installé dans un circuit de fluide gazeux et permettant l'ouverture de ce circuit à une pression aval donnée inférieure à la valeur de consigne de fermeture pour cette même pression aval; on appellera dans la présente description sous la seule dénomination « gaz » toute composition, mélange ou gaz mono composant.The present invention relates to a pneumatic component intended to be installed in a gaseous fluid circuit and allowing the opening of this circuit at a given downstream pressure lower than the closing set point for this same downstream pressure; In the present description, the term "gas" will be used to refer to any composition, mixture or single-component gas.
Le domaine technique de l'invention est celui de la distribution et des mélanges de gaz.The technical field of the invention is that of distribution and gas mixtures.
Dans ce domaine les installations comportent souvent des appareils ou dispositifs propres à fournir, à partir de plusieurs constituants, un mélange de constitution pré-définie, qu'on appellera dans la présente description sous la seule dénomination « mélangeur de gaz ».In this field, the installations often comprise apparatus or devices capable of providing, from several constituents, a mixture of pre-defined constitution, which will be called in the present description under the sole designation "gas mixer".
De façon classique, un mélangeur de gaz est généralement muni d'un réservoir tampon en sortie. Et entre le réservoir tampon placé en sortie et l'ensemble mélangeur on trouve souvent un dispositif comportant un détecteur de pression aval à deux seuils et une électrovanne. Ce dispositif permet d'arrêter le mélangeur lorsque la pression aval atteint un seuil trop élevé pour garantir la précision du mélange et de le mettre en marche lorsque la pression aval a chuté à un niveau inférieur au seuil de fermeture.In a conventional manner, a gas mixer is generally provided with an outlet buffer tank. And between the buffer reservoir placed at the outlet and the mixer assembly there is often a device comprising a downstream pressure detector with two thresholds and a solenoid valve. This device makes it possible to stop the mixer when the downstream pressure reaches a threshold that is too high to guarantee the accuracy of mixing and to put it into operation when the downstream pressure has dropped to a level below the closure threshold.
Ce dispositif connu présente l'inconvénient d'être constitué de pièces disparates et raccordées entre elles par des canalisations rigides ou souples, sources de fuites et plus complexes à mettre en œuvre et de nécessiter souvent une alimentation électrique.This known device has the disadvantage of being composed of disparate parts and connected together by rigid or flexible pipes, sources of leaks and more complex to implement and often require a power supply.
De nombreux dispositifs ont été inventés pour réaliser des mélangeurs de gaz intégrant ce type de dispositif.Many devices have been invented to produce gas mixers incorporating this type of device.
On peut citer par exemple la demande de brevet FR 2019284 de la société DRAGER qui décrit des dispositifs de mélange qui utilisent des clapets mobiles poussés par l'armature attirée par la force magnétique d'un aimant. De même on connaît la demande FR 2138742 de la société AIRCO qui décrit un dispositif, utilisant une armature agissant sur une membrane ; laquelle armature subit alternativement l'influence de deux aimants, qui déterminent chacun deux positions extrêmes. On pourrait citer de nombreux autres dispositifs de même type, mais soient ils ne répondent pas pour certains, comme ci-dessus, à la problématique de pouvoir ouvrir/fermer le circuit de sortie entre deux pressions, soit sont tous assez complexes de réalisation. Le but de l'invention est de trouver une solution alternative plus simple et ne présentant pas les mêmes inconvénients .For example, patent application FR 2019284 by the company Drager discloses mixing devices that use movable valves pushed by the armature attracted by the magnetic force of a magnet. Similarly is known the application FR 2138742 of the company AIRCO which describes a device, using a frame acting on a membrane; which armature alternately undergoes the influence of two magnets, which each determine two extreme positions. One could cite many other devices of the same type, but they do not answer for some, as above, the problem of being able to open / close the output circuit between two pressures, or are all quite complex. The object of the invention is to find an alternative solution simpler and does not have the same disadvantages.
Le problème posé est donc de pouvoir réaliser, en sortie d'un mélangeur existant, un dispositif permettant l'ouverture de ce circuit à une pression aval donnée inférieure à la valeur de consigne de fermeture pour cette même pression, de préférence entièrement pneumatique, le dispositif devant être le plus simple possible à réaliser, nécessitant moins de pièces que les dispositifs connus et facile à mettre en place.The problem posed is therefore to be able to produce, at the outlet of an existing mixer, a device permitting the opening of this circuit at a given downstream pressure which is lower than the closing set point value for this same pressure, preferably entirely pneumatic. device to be the simplest possible to achieve, requiring fewer parts than known devices and easy to implement.
Une solution au problème posé est un composant pneumatique destiné à être installé dans un circuit de gaz, dans ou en sortie d'un mélangeur de gaz et permettant l'ouverture de ce circuit à une pression aval inférieure à la valeur de consigne de fermeture pour cette même pression aval, qui comprend : - un corps creux dont la partie intérieure comporte au moins une chambre,A solution to the problem posed is a pneumatic component intended to be installed in a circuit of gas, in or out of a gas mixer and allowing the opening of this circuit at a downstream pressure lower than the closing setpoint value for this same downstream pressure, which comprises: a hollow body whose inner part comprises at least one room,
- au moins un orifice d'entrée percé dans le corps, et apte à assurer le passage du gaz vers la chambre,at least one inlet orifice pierced in the body, and capable of ensuring the passage of the gas towards the chamber,
- au moins un orifice de sortie percé dans le corps, et apte à assurer le passage du gaz de la chambre vers l'extérieur du composant,at least one outlet orifice pierced in the body and capable of ensuring the passage of the gas from the chamber towards the outside of the component,
- un obturateur mobile et étanche sur un siège situé en entrée de ladite chambre, ledit obturateur formant moyen d'arrêt, sensible à la différence de pression régnant entre chaque face de l'obturateur,a movable and leakproof shutter on a seat situated at the inlet of said chamber, said shutter forming a stop means, sensitive to the pressure difference prevailing between each face of the shutter,
- un moyen de sollicitation dudit obturateur pour lui appliquer une force de maintien déterminée et différente en fonction de ses positions d'ouverture et de fermeture, et apte à assurer un décalage entre la pression d'ouverture et de fermeture.a means for biasing said shutter to apply to it a holding force that is determined and different as a function of its open and closed positions, and capable of ensuring a shift between the opening and closing pressure.
Ce moyen est assuré par l'attraction magnétique induite par au moins un aimant permanent qui maintient ledit obturateur en position fermée sur son siège. L'invention permet ainsi de disposer d'un nouveau composant entièrement pneumatique, simple à réaliser et qui réalise la fonction d'ouverture et de fermeture du circuit avec une hystérésis grâce à la force magnétique d'un aimant. En effet une force magnétique est induite dans le clapet d'une vanne d'obturation par un aimant permanent. Ce clapet est soumis à la résultante entre la force d'attraction magnétique et une force due à la différence de pression entre chaque côté du clapet. La force d'attraction est fortement dépendante de la distance entre l'aimant et le clapet. Lorsque la différence de pression est suffisante pour vaincre cette force d'aimantation (qui est à son maximum), le clapet s'ouvre et laisse passer le gaz. La force d'attraction diminue alors fortement au fur et à mesure de l' éloignement du clapet. Ce clapet ne se fermera alors que lorsque la différence de pression va diminuer à un niveau inférieur à la force magnétique (qui est à son minimum) . Il s'ensuit que, la pression amont étant maintenue constante, la pression aval doit remonter à un niveau supérieur à celui de l'ouverture pour pouvoir refermer le clapet. Dès que celle-ci redescend à son seuil bas, un nouveau cycle d'ouverture/fermeture redémarre.This means is provided by the magnetic attraction induced by at least one permanent magnet which keeps said shutter in the closed position on its seat. The invention thus provides a new fully pneumatic component, simple to perform and which performs the function of opening and closing the circuit with a hysteresis by the magnetic force of a magnet. Indeed a magnetic force is induced in the valve of a shutter valve by a permanent magnet. This valve is subjected to the resultant between the magnetic attraction force and a force due to the pressure difference between each side of the valve. The attraction force is strongly dependent on the distance between the magnet and the valve. When the pressure difference is sufficient to overcome this magnetization force (which is at its maximum), the valve opens and allows the gas to pass. The attractive force then decreases sharply as the valve moves away. This valve will not close when the pressure difference will decrease to a level below the magnetic force (which is at its minimum). It follows that, the upstream pressure being kept constant, the downstream pressure must go up to a level higher than that of the opening to be able to close the valve. As soon as this one goes down to its low threshold, a new cycle of opening / closing restarts.
Le résultat est un nouveau dispositif d'ouverture/fermeture, très simple et agencé pour être monté directement en sortie d'un ensemble de mélange de gaz; ce nouveau dispositif est très simple à réaliser et à fabriquer en grande série permettant de réduire les coûts de fabrication par rapport aux systèmes actuels qui font appel à différents composants spécifiques interdisant des solutions économiques; la présente invention permet de se positionner sur les marchés existants avec un avantage concurrentiel, en proposant un composant se présentant sous une forme unitaire, compacte et ergonomique et ne nécessitant la mise en œuvre que d'un minimum de pièces.The result is a new opening / closing device, very simple and arranged to be mounted directly at the outlet of a gas mixture assembly; this new device is very simple to manufacture and manufacture in large series to reduce manufacturing costs compared to current systems that use different specific components prohibiting economic solutions; the present invention makes it possible to position oneself on the existing markets with a competitive advantage, by proposing a component presenting in a unitary, compact and ergonomic form and requiring the implementation of only a minimum of parts.
Un tel composant pneumatique permet d'assurer le fonctionnement automatique d'un mélangeur de gaz préexistant dans une plage de pression contrôlée, et cela de façon entièrement pneumatique. On pourrait citer d'autres avantages de la présente invention mais ceux cités ci-dessus en montrent déjà suffisamment pour en prouver la nouveauté et l' intérêt . La description ci-après et le dessin joint unique représentent un exemple de la réalisation de l'invention, mais n'ont aucun caractère limitatif : d'autres réalisations sont possibles dans le cadre de la portée et de l'étendue de cette invention. La figure 1 est une vue en coupe axiale et latérale d'un composant pneumatique suivant un exemple de réalisation de l' invention et prêt à être installé en série avec un mélangeur de gaz existant et connu.Such a pneumatic component makes it possible to ensure the automatic operation of a pre-existing gas mixer within a controlled pressure range, and this entirely pneumatically. Other advantages of the present invention could be mentioned, but those mentioned above already show enough to prove novelty and interest. The following description and the single attached drawing are an example of the embodiment of the invention, but are not limiting in nature: other embodiments are possible within the scope and scope of this invention. Figure 1 is an axial and lateral sectional view of a pneumatic component according to an embodiment of the invention and ready to be installed in series with an existing and known gas mixer.
Le composant pneumatique suivant l'invention comprend un corps 100 creux sensiblement tubulaire et réalisé en matériau compatible et étanche aux gaz utilisés : sa partie intérieure comporte au moins une chambre 101 fermée par un obturateur 110, étanche sur le siège 111 formant l'entrée de la chambre. Un moyen adéquat 131 tel qu'un joint torique souple assure l'étanchéité du clapet. Un orifice d'entrée 102 et un orifice de sortie 103 permettent de raccorder ce composant au circuit de gaz concerné. Suivant le mode de réalisation représenté sur la figure jointe, l'obturateur 110 est un clapet mobile coulissant librement le long d'un axe longitudinal dans la chambre 101. Ce clapet en se déplaçant longitudinalement vient fermer ou ouvrir l'orifice situé à l'entrée de la chambre 101. Ce clapet 110 est soumis d'une part à une force due à la différence de pression entre la pression Pl régnant en amont du clapet et la pression P2 régnant en aval dans la chambre 101. Cette force de pression, variable et qui dépend essentiellement de la pression aval P2 lorsque la pression amont Pl est maintenue constante, tend à ouvrir le clapet 110. Un aiment permanent 113 est placé à l'entrée de la chambre 101 de façon telle à soumettre le clapet mobile 110 muni d'une pièce métallique 112 à une force magnétique qui tend à le plaquer en position fermée sur son siège 111. Dans le mode de réalisation représenté, un ressort 120 vient lui aussi appuyer longitudinalement sur le clapet 110 de façon à le maintenir en position fermée sur son siège 111. Ce ressort comprend tout moyen de réglage 121 permettant de le déplacer longitudinalement tel qu'un pas de vis et de le maintenir dans sa position de réglage. Grâce à l'aimant 113 on dispose d'un moyen simple de définir un décalage de pression entre la pression P2 min nécessaire pour ouvrir le clapet 110 et la pression P2 max nécessaire pour refermer ce clapet. Au repos, lorsque les pressions Pl et P2 sont quasi identiques, le clapet mobile ferme le siège 111 ; il n'y a pas de débit de gaz. Lorsque la pression aval P2 chute (suite à une utilisation du gaz en aval) la force due à la différence de pression P1-P2 qui s'applique sur la section du clapet devient supérieure aux forces d'attraction magnétique de l'aimant et de rappel du ressort qui maintiennent ce clapet en position fermée. De ce fait le clapet 110 se déplace et commande l'ouverture et le passage de gaz au travers du composant jusqu'en sortie.The pneumatic component according to the invention comprises a hollow body 100 substantially tubular and made of compatible material and gas-tight used: its inner portion comprises at least one chamber 101 closed by a shutter 110, sealed on the seat 111 forming the inlet of bedroom. A suitable means 131 such as a flexible O-ring seals the valve. An inlet port 102 and an outlet port 103 make it possible to connect this component to the gas circuit concerned. According to the embodiment shown in the attached figure, the shutter 110 is a movable valve freely sliding along a longitudinal axis in the chamber 101. This valve moving longitudinally just close or open the orifice located at the the inlet of the chamber 101. This valve 110 is subjected on the one hand to a force due to the pressure difference between the pressure P1 prevailing upstream of the valve and the pressure P2 prevailing downstream in the This pressure force, variable and which depends essentially on the downstream pressure P2 when the upstream pressure P1 is kept constant, tends to open the valve 110. A permanent magnet 113 is placed at the inlet of the chamber 101 so as to such as to subject the movable valve 110 provided with a metal piece 112 to a magnetic force which tends to press it in the closed position on its seat 111. In the embodiment shown, a spring 120 also comes to bear longitudinally on the valve 110 so as to keep it in closed position on its seat 111. This spring comprises any adjusting means 121 for moving longitudinally such that a thread and maintain it in its adjustment position. Thanks to the magnet 113 there is a simple way to define a pressure offset between the pressure P2 min necessary to open the valve 110 and the pressure P2 max necessary to close the valve. At rest, when the pressures P1 and P2 are almost identical, the movable valve closes the seat 111; there is no gas flow. When the downstream pressure P2 drops (following use of the downstream gas) the force due to the pressure difference P1-P2 which applies to the valve section becomes greater than the magnetic attraction forces of the magnet and recall of the spring which maintain this valve in the closed position. As a result, the valve 110 moves and controls the opening and passage of gas through the component to output.
L'attraction magnétique étant fortement dépendante de 1' éloignement du clapet, elle s'amenuise fortement en position ouverte. Il s'ensuit que pour refermer le clapet sur son siège 111 il est nécessaire que la différence de pression P1-P2 diminue plus que sa valeur initiale et donc que la pression P2 remonte à un seuil supérieur au seuil d'ouverture pour refermer ce clapet.Since the magnetic attraction is highly dependent on the distance of the valve, it diminishes greatly in open position. It follows that to close the valve on its seat 111 it is necessary that the pressure difference P1-P2 decreases more than its initial value and therefore that the pressure P2 rises to a threshold above the opening threshold to close the valve .
Le clapet se referme alors et est de nouveau soumis à l'attraction magnétique maximum de l'aimant 113 qui le maintient fermé. Lorsque la pression P2 chute de nouveau suite à la consommation de gaz en aval, le cycle d'ouverture/fermeture se produit de nouveau.The valve then closes and is again subject to the maximum magnetic attraction of the magnet 113 which keeps it closed. When the pressure P2 falls again as a result of downstream gas consumption, the open / close cycle occurs again.
Connaissant les caractéristiques de débit/pression nécessaires, l'homme du métier peut ainsi définir les caractéristiques de réalisation du composant pneumatique suivant l'invention, telles que l'implantation de l'aimant, la force du ressort et les dimensions du clapet, afin d'obtenir les seuils d'ouverture/fermeture désirés .Knowing the characteristics of flow / pressure required, the skilled person can thus define the characteristics of embodiment of the pneumatic component according to the invention, such as the implantation of the magnet, the spring force and the dimensions of the valve, so to obtain the desired opening / closing thresholds.
Bien que l'invention ait été décrite en liaison avec un exemple particulier de réalisation, il est évident qu'elle n'y est nullement limitée mais au contraire susceptible de modifications et de variantes qui apparaîtront à l'homme de l'art et qu'elle comprend tous les éléments techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention. Although the invention has been described in connection with a particular embodiment, it is obvious that it is in no way limited but on the contrary susceptible to modifications and variations that will occur to those skilled in the art and that it includes all the technical elements of the means described and their combinations if they fall within the scope of the invention.

Claims

REVENDICATIONS
1. Composant pneumatique destiné à être installé dans un circuit de gaz, dans ou en sortie d'un mélangeur de gaz et permettant l'ouverture de ce circuit à une pression aval P2 min inférieure à la valeur de consigne de fermeture P2 max pour cette même pression aval, caractérisé en ce qu' il comprend : un corps (100) creux dont la partie intérieure comporte au moins une chambre (101), au moins un orifice d'entrée (102) percé dans le corps (100), et apte à assurer le passage du gaz vers la chambre, au moins un orifice de sortie (103) percé dans le corps (100), et apte à assurer le passage du gaz de la chambre (101) vers l'extérieur du composant,1. Pneumatic component intended to be installed in a gas circuit, in or out of a gas mixer and allowing the opening of this circuit to a downstream pressure P2 min less than the closing setpoint value P2 max for this same downstream pressure, characterized in that it comprises: a hollow body (100) whose inner part comprises at least one chamber (101), at least one inlet orifice (102) pierced in the body (100), and adapted to ensure the passage of gas to the chamber, at least one outlet orifice (103) pierced in the body (100), and adapted to ensure the passage of the gas from the chamber (101) towards the outside of the component,
- un obturateur (110) mobile et étanche sur un siège (111) situé en entrée de ladite chambre (101), ledit obturateur formant moyen d'arrêt, sensible à la différence de pression P1-P2 régnant entre chaque face de 1' obturateur,- A shutter (110) movable and sealed on a seat (111) located at the inlet of said chamber (101), said shutter forming a stop means, responsive to the pressure difference P1-P2 between each face of the shutter 1 ,
- un moyen de sollicitation dudit obturateur pour lui appliquer une force de maintien déterminée et différente en fonction de ses positions d'ouverture et de fermeture, et apte à assurer un décalage entre la pression d'ouverture et de fermeture.a means for biasing said shutter to apply to it a holding force that is determined and different as a function of its open and closed positions, and capable of ensuring a shift between the opening and closing pressure.
2. Composant pneumatique suivant la revendication 1, caractérisé en ce que le moyen de sollicitation de l'obturateur (110) comprend au moins un aimant permanent (113) qui maintient ledit obturateur en position fermée sur son siège (111). 2. Pneumatic component according to claim 1, characterized in that the means for biasing the shutter (110) comprises at least one permanent magnet (113) which holds said shutter in the closed position on its seat (111).
3. Composant pneumatique suivant la revendication 2, caractérisé en ce que l'obturateur (110) est muni d'une pièce métallique (112) soumise à l'attraction d'au moins un aimant permanent ( 113) placé à l'entrée de la chambre (101) .3. Pneumatic component according to claim 2, characterized in that the shutter (110) is provided with a metal part (112) subjected to the attraction of at least one permanent magnet (113) placed at the inlet of the room (101).
4. Composant pneumatique suivant la revendication 2, caractérisé en ce que l'obturateur (110) est muni d'un aimant permanent qui est attiré par au moins une pièce métallique placée à l'entrée de la chambre (101) .4. Pneumatic component according to claim 2, characterized in that the shutter (110) is provided with a permanent magnet which is attracted by at least one metal piece placed at the entrance of the chamber (101).
5. Composant pneumatique suivant la revendication 2, caractérisé en ce que l'obturateur (110) est muni d'un aimant permanent soumis à l'attraction magnétique d'un autre aimant permanent (113) fixé à l'entrée de la chambre (101) .5. Pneumatic component according to claim 2, characterized in that the shutter (110) is provided with a permanent magnet subjected to the magnetic attraction of another permanent magnet (113) fixed to the entrance of the chamber ( 101).
6. Composant pneumatique suivant l'une quelconque des revendications précédentes, caractérisé en ce que la chambre (101) comprend un moyen élastique appuyant sur l'obturateur mobile (110) pour le maintenir en position fermée .6. Pneumatic component according to any one of the preceding claims, characterized in that the chamber (101) comprises an elastic means pressing the movable shutter (110) to keep it in closed position.
7. Composant pneumatique suivant la revendication précédente, caractérisé en ce que le moyen élastique est constitué d'au moins un ressort (120) situé le long de l'axe central de la chambre et appuyant sur l'obturateur mobile (110) .7. Pneumatic component according to the preceding claim, characterized in that the elastic means consists of at least one spring (120) located along the central axis of the chamber and pressing the movable shutter (110).
8. Composant pneumatique selon la revendication précédente, caractérisé en ce qu'il comprend un moyen de réglage (121) de la force dudit ressort.8. Pneumatic component according to the preceding claim, characterized in that it comprises a means (121) for adjusting the force of said spring.
9. Mélangeur de gaz à plusieurs constituants, caractérisé en ce qu'il dispose en sortie d'un composant pneumatique d'ouverture/fermeture conforme à l'une quelconque des revendications précédentes. 9. Multi-component gas mixer, characterized in that it has at the output of a pneumatic opening / closing component according to any one of the preceding claims.
PCT/FR2007/001899 2006-11-21 2007-11-20 Pneumatic sectioning component with hysteresis<0} WO2008068430A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0610169 2006-11-21
FR0610169A FR2908855B1 (en) 2006-11-21 2006-11-21 PNEUMATIC OPENING AND CLOSING COMPONENT WITH HYSTERESIS

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WO2008068430A1 true WO2008068430A1 (en) 2008-06-12

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FR (1) FR2908855B1 (en)
WO (1) WO2008068430A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105247435A (en) * 2013-03-25 2016-01-13 Ad文塔公司 Compact inverted pressure regulator for dispensing gas
CN107456936A (en) * 2017-08-28 2017-12-12 江苏合海集团股份有限公司 A kind of reactor with filler device
CN109716001A (en) * 2016-07-21 2019-05-03 文迪克公司 Pressure relief valve
FR3077861A1 (en) * 2018-02-09 2019-08-16 Ea Technique PRESSURE LIMITATION DEVICE FOR AIRCRAFT, SYSTEM AND ASSOCIATED AIRCRAFT

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* Cited by examiner, † Cited by third party
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CN113797798B (en) * 2021-11-17 2022-03-11 江苏华光新材料科技有限公司 Super weather-resistant powder storage device based on earth temperature storage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270763A (en) * 1963-09-25 1966-09-06 Kiefer Heinz Pressure responsive valve
US3396741A (en) * 1963-12-17 1968-08-13 Teves Kg Alfred Switching valve for fluid system
FR2138742A1 (en) * 1971-05-20 1973-01-05 Airco Inc
FR2348418A1 (en) * 1976-04-14 1977-11-10 Citroen Sa HYDRAULIC CIRCUIT BREAKER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270763A (en) * 1963-09-25 1966-09-06 Kiefer Heinz Pressure responsive valve
US3396741A (en) * 1963-12-17 1968-08-13 Teves Kg Alfred Switching valve for fluid system
FR2138742A1 (en) * 1971-05-20 1973-01-05 Airco Inc
FR2348418A1 (en) * 1976-04-14 1977-11-10 Citroen Sa HYDRAULIC CIRCUIT BREAKER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105247435A (en) * 2013-03-25 2016-01-13 Ad文塔公司 Compact inverted pressure regulator for dispensing gas
CN109716001A (en) * 2016-07-21 2019-05-03 文迪克公司 Pressure relief valve
CN109716001B (en) * 2016-07-21 2021-02-05 文迪克公司 Pressure relief valve
CN107456936A (en) * 2017-08-28 2017-12-12 江苏合海集团股份有限公司 A kind of reactor with filler device
FR3077861A1 (en) * 2018-02-09 2019-08-16 Ea Technique PRESSURE LIMITATION DEVICE FOR AIRCRAFT, SYSTEM AND ASSOCIATED AIRCRAFT

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FR2908855B1 (en) 2009-01-16

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