EP0233118A1 - Multipurpose blow-off cock - Google Patents

Multipurpose blow-off cock Download PDF

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Publication number
EP0233118A1
EP0233118A1 EP87400253A EP87400253A EP0233118A1 EP 0233118 A1 EP0233118 A1 EP 0233118A1 EP 87400253 A EP87400253 A EP 87400253A EP 87400253 A EP87400253 A EP 87400253A EP 0233118 A1 EP0233118 A1 EP 0233118A1
Authority
EP
European Patent Office
Prior art keywords
valve
seat
circuit
control means
sealing
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.)
Granted
Application number
EP87400253A
Other languages
German (de)
French (fr)
Other versions
EP0233118B1 (en
Inventor
Charles Christiany
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.)
Sollac SA
Original Assignee
Lorraine de Laminage Continu SA SOLLAC
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Filing date
Publication date
Application filed by Lorraine de Laminage Continu SA SOLLAC filed Critical Lorraine de Laminage Continu SA SOLLAC
Publication of EP0233118A1 publication Critical patent/EP0233118A1/en
Application granted granted Critical
Publication of EP0233118B1 publication Critical patent/EP0233118B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/002—Evacuating and treating of exhaust gases
    • C21B7/005—Bleeder valves or slides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4259—With separate material addition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6579—Circulating fluid in heat exchange relationship
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87981—Common actuator
    • Y10T137/87997—Alternately seating

Definitions

  • the object of the present invention is a valve device of the purge and controlled discharge valve type for gaseous fluid circuits.
  • valves for gaseous fluid circuits which, depending on the model, have different functions.
  • these valves have a common characteristic which is to ensure, in one of their positions, the tightness of the circuit on which they are installed, and in another position the more or less controlled and more or less automatic communication of said circuit with the ambient environment or another circuit of different characteristics, in particular of different pressure.
  • valves There are in fact several types of valves that can be grouped according to the relative position of the valve relative to its seat, according to the direction and the trajectory of the valve when the latter opens and also according to the control means.
  • a first group of valves is of the type with internal reach, in which the valve is located inside the circuit with respect to its seat, and opens by moving towards the interior of the circuit.
  • a second group is of the type with external reach, in which the valve is located outside the circuit with respect to its seat, and opens by moving towards the outside.
  • valves An important drawback of these valves is that the flow of gaseous fluid, when said valves open, is mainly limited by the dimension of the passage existing between the seat of the valve and the valve itself, or between the surfaces used for sealing when the valve is closed.
  • valve Another type of valve is distinguished by the fact that the movement of the valve is not straight along the axis of the device, but that the valve is raised by pivoting so as to completely clear the passage of the fluid. This is an improvement in the case of purge operation, but does not solve the problem of limiting the flow of fluid through the sealing surfaces during operation in regulated discharge, the control of the discharge being always ensured by the adjustment of the spacing of the valve and seat sealing surfaces.
  • valve device of the present invention is to reduce or even eliminate the aforementioned drawbacks, and additionally offers advantages which will be described in detail below.
  • a valve device comprises a valve, movable along the axis of the device inside a valve body having a sealing seat on which can bear a bearing of said valve so as to separate sealingly an area located downstream of the device from an area located upstream of said device; it also includes valve control means intended to move and maintain said valve in a determined position.
  • said device also comprises a second seat placed opposite the sealing seat, and the valve is selectively controlled by said control means so that, in addition to the position in which the range of said valve is supported on the sealing seat to seal the device and the circuit on which said device is installed, the valve can be placed in the middle position between the two seats to provide a maximum passage section between the valve and the valve body to purge the circuit, and that in intermediate positions, another bearing of said valve acts in collaboration with the second seat, said valve being held in a position chosen between said middle position and a support position on the second seat, to limit the passage section between the valve and the second seat to regulate the discharge of the circuit.
  • the device can have a vertical axis and the sealing seat can be located on the side of the device furthest from the circuit and be called the upper seat.
  • the second seat is then located on the side of the device closest to the circuit and is called the lower seat.
  • the valve can also be controlled to come to bear on said lower seat, and thus to isolate from the circuit said upper seat.
  • Said valve also has a fourth position called “safety" when it is supported on the lower seat.
  • this valve having a double bearing is intended to separate the various functions which the valve device must fulfill. Indeed, the upper part of the valve and the upper seat are intended only to seal, when the valve is in abutment on said upper seat, and no longer have any functional utility when the valve is in the purge position. or regulated discharge.
  • the cross section of the gaseous fluid is determined by the spacing existing between the lower seat and the valve.
  • the valve being located between its middle position, which leaves an approximately identical passage section at the level of the lower seat and at the level of the upper seat, and its support position on the lower seat, the passage section between the valve and the upper seat is larger than the passage section between the valve and the lower seat.
  • the valve In the purge position, the valve is in the middle position, approximately equidistant from the lower and upper seats, so that the passage section between the valve body and the valve itself is maximum, and the minimum pressure drop during of the gas flow.
  • the so-called "safety" position of the valve that is to say when said valve is in abutment on the lower seat, is not intended to ensure perfect sealing of the circuit, but mainly to allow intervene on the sealing surfaces of the upper seat and the valve, in particular to replace seals, without the maintenance personnel responsible for this intervention being inconvenienced by gas fumes from the circuit.
  • the safety position of the valve is not intended to ensure perfect sealing of the circuit, but mainly to allow intervene on the sealing surfaces of the upper seat and the valve, in particular to replace seals, without the maintenance personnel responsible for this intervention being inconvenienced by gas fumes from the circuit.
  • it can be canceled by the constitution of a water seal at the valve junction -seat.
  • the valve device shown in FIG. 1 comprises a bicone valve 2 comprising two inverted male frustoconical parts 21, 22 and connected at their largest diameters, said valve 2 being movable along the axis of the device between an upper seat 11 and a lower seat 12 of a valve body 1.
  • Said seats 11, 12 are also frustoconical, of conicity substantially identical to the conicity of the corresponding frustoconical parts 21, 22 of the valve 2, and also connected at their largest diameter.
  • the frustoconical parts 21, 22 of the valve 2 are, in the device shown in Figure 1, connected by a cylindrical part; similarly the frustoconical seats 11, 12 are connected by a cylindrical part.
  • the dimensions and shapes of the various constituent parts of the valve 2 and of the valve body 1 are determined so as to ensure a sufficient passage cross-section, with regard to the circuit where the device is installed, between the valve body 1 and the valve 2 when it is in the purge position.
  • This passage section is preferably at least equal to the connection section of the valve device on the circuit, so as not to create a limitation of the flow in the body of the device.
  • valve body 1 and of the bicone valve 2 are determined so as to present the lowest possible pressure drops to facilitate the ejection of the gaseous fluid to be discharged.
  • the valve body 1 is made in two parts.
  • the part closest to the circuit where the valve device is installed is connected to said circuit by connecting means ensuring sealing, for example by flange and seals.
  • This part consists mainly of the lower seat 12 and the cylindrical part of the valve body 1.
  • the second part consists of the upper seat 11 which is tightly connected by a flange 3 to the valve body 1 whose internal dimensions at the level of this flange 3 are such that they allow the passage of the valve 2 during its installation or its removal.
  • the valve device also comprises control means intended to ensure the translation along the axis of the device and the positioning of the valve 2.
  • Said control means consist of a fixed part connected to the valve body 1 by a support 8, and another movable part along the axis of the device and connected to the valve 2.
  • Said control means can be of various natures, and moved by various energies.
  • a particular embodiment consists in using a hydroelectric group 4, which is supported by a tripod bracket 5 rigidly fixed to the valve body 1.
  • a particularly advantageous embodiment consists in that the connections of the control group 4 with the support 8 on the one hand, and with the valve 2 on the other hand are articulated and arranged so that their axes of articulation are orthogonal to each other and to the axis of the device.
  • This arrangement gives a certain freedom of movement of the valve relative to the axis of the device and allows its self-centering on the lower and upper seats 11, 12, thus improving the contact and therefore the sealing between the valve 2 and said seats 11, 12.
  • the valve 2 In order to guide the flow of gaseous fluid when the valve 2 is in the regulated purge or discharge position, and also to protect the control means, it is provided on the valve 2 and on the support 8 of the deflector skirts 6, 7.
  • One of these deflector skirts 7 is fixed on the valve 2 ; the other skirt 6 is fixed on the tripod bracket 5, and is constituted so as to slide in the skirt 7 fixed on the valve 2 when said valve is operated by the control means 4.
  • the set of deflector skirts is made of so that, whatever the position of the valve 2, there is always at least one protective wall of said skirts between the control means and the fluid.
  • said skirts so as to be able to ventilate and cool the space located inside the valve 2 and said skirts by means of forced ventilation. This ventilation reinforces the thermal protection of the control group.
  • the upper seat 11 may be provided with protective means.
  • An embodiment of an upper seat is shown in section in FIG. 2.
  • the seat of the upper seat 11 is provided with two seals 15 held in annular grooves 14 produced in the bearing surface of said upper seat 11. It is also possible to have one or more seals in this way.
  • the annular grooves 14 have a cross section such that the seals 15 which are placed in said grooves are firmly held and that these seals 15 protrude sufficiently from the bearing surface of the upper seat 11 to receive the support of the frustoconical part 21 of the valve 2 in sealing position.
  • annular cooled chamber 17 is provided at its periphery, of which the bearing face of the upper seat 11 constitutes a wall, and in which a cooling fluid can circulate.
  • the upper seat also comprises, at the periphery of the cooled chamber 17, another annular chamber called the injection chamber 18.
  • This injection chamber 18 is connected, by injection nozzles 13, to the range of the upper seat 11 and to an ejection chamber 16.
  • This ejection chamber 16 consists of an annular recess provided at the level of the internal circumference of the joint plane between the valve body 1 and the flange 3.
  • the injection nozzles 13 consist of portions of tubes sealingly passing through the cooled chamber 17 and are distributed over the entire periphery of the upper seat 11.
  • Cleaning plugs 20 are provided, in accordance with the position of the injection nozzles 13 in order to allow access to the interior of said nozzles for cleaning and possibly unblocking their orifice opening onto the seat of the upper seat 11 or in the ejection chamber 16.
  • the set of injection means comprising the injection chamber 18, the injection nozzles 13 and the ejection chamber 16 serves to inject an ejector fluid, for example air or vapor or nitrogen, as soon as the valve s' away from the upper seat.
  • an ejector fluid for example air or vapor or nitrogen
  • ejector fluid is intended, in collaboration with the shapes of the upper seat 11 to avoid fouling of the surfaces and wear by abrasion and to protect the seals. Indeed, the ejector fluid will on the one hand clean the scope of any deposits that may be deposited there, and on the other hand, create, thanks to the ejection chamber 16, a clean "fluid” mattress “ “preventing the gaseous fluid passing through the valve device from coming into contact with the seat of the upper seat 11.
  • valve device which is the subject of the invention has numerous advantages, both in terms of operation and of its production.
  • the separation of the sealing and regulated discharge functions is a important factor in the longevity of the device and better sealing performance.
  • the replacement of the seals can be done under undeniable safety conditions when the valve is in the "safety" position. This intervention is possible even if the circuit is under pressure, thanks to the possibility of constituting a water seal, and by performing an appropriate setting of the valve.
  • valve device with easily removable modular elements, makes its realization and installation easy and low cost.
  • size perpendicular to the axis of the device can be practically reduced to the circumference of the valve body, without elements extending beyond this circumference.
  • the adaptation of various control means is particularly simple, as is the adaptation of the device to various applications according to the characteristics of the fluid circuit.
  • the constituent materials of the body 1, of the bicone valve 2, of the upper sealing seat 11, of the skirts 6, 7 can be of various natures such as: welded steel, cast steel, cast iron, alloys, composite materials or other materials.
  • the cooling of the valve and of the upper seat as well as the protection by ejector fluid can be adapted to different uses by those skilled in the art while remaining within the scope of the invention.
  • the valve device can find numerous applications in all industries using gaseous fluid circuits such as gas networks, steam, etc.

Abstract

Le corps de clapet (1) posséde un premier siège d'étanchéité (11) et un second siège (12) placé en regard du siège d'étanchéité (11), ledit chapet (2) étant commandé sélectivement de façon que, outre la position dans laquelle la portée (21) dudit chapet (2) est en appui sur le siège (11) pour assurer l'étanchéité du dispositif et du circuit sur lequel ledit dispositif est installé, le clapet (2) puisse être placé en position médiane entre les deux sièges (11,12) pour ménager une section de passage maximale entre le clapet (2) et le corps de clapet (1) pour purger le circuit, et que dans des positions intermédiaires, une autre portée (22) dudit clapet (2) agisse en collaboration avec le second siège (12), ledit clapet (2) étant maintenu dans une position choisie entre ladite position médiane et une position d'appui sur le second siège (12), pour limiter la section de passage entre le clapet (2) et le second siège (12) pour réguler la décharge du circuit.The valve body (1) has a first sealing seat (11) and a second seat (12) placed opposite the sealing seat (11), said cap (2) being selectively controlled so that, in addition to the position in which the bearing surface (21) of said cap (2) is supported on the seat (11) to seal the device and the circuit on which said device is installed, the valve (2) can be placed in the middle position between the two seats (11,12) to provide a maximum passage section between the valve (2) and the valve body (1) to purge the circuit, and that in intermediate positions, another bearing (22) of said valve (2) acts in collaboration with the second seat (12), said valve (2) being held in a position chosen between said middle position and a support position on the second seat (12), to limit the passage section between the valve (2) and the second seat (12) to regulate the discharge of the circuit.

Description

L'objet de la présente invention est un dispositif à clapet du type clapet de purge et de décharge contrôlée pour circuits de fluides gazeux.The object of the present invention is a valve device of the purge and controlled discharge valve type for gaseous fluid circuits.

On connaît différents types de clapets pour circuits de fluides gazeux assurant selon les modèles, différentes fonctions. Cependant, ces clapets ont une caractéristique commune qui est d'assurer, dans une de leurs positions, l'étanchéité du circuit sur lequel ils sont installés, et dans une autre position la communication plus ou moins contrôlée et plus ou moins automatique dudit circuit avec le milieu ambiant ou un autre circuit de caractéristiques différentes, en particulier de pression différente.Different types of valves are known for gaseous fluid circuits which, depending on the model, have different functions. However, these valves have a common characteristic which is to ensure, in one of their positions, the tightness of the circuit on which they are installed, and in another position the more or less controlled and more or less automatic communication of said circuit with the ambient environment or another circuit of different characteristics, in particular of different pressure.

Il existe en fait plusieurs types de clapets que l'on peut regrouper suivant la position relative du clapet par rapport à son siège, selon le sens et la trajectoire du clapet lorsque celui-ci s'ouvre et aussi selon les moyens de commande.There are in fact several types of valves that can be grouped according to the relative position of the valve relative to its seat, according to the direction and the trajectory of the valve when the latter opens and also according to the control means.

Un premier groupe de clapets est du type à portée intérieure, dans lequel le clapet est situé à l'intérieur du circuit par rapport à son siège, et s'ouvre en se déplaçant vers l'intérieur du circuit.A first group of valves is of the type with internal reach, in which the valve is located inside the circuit with respect to its seat, and opens by moving towards the interior of the circuit.

Un second groupe est du type à portée extérieure, dans lequel le clapet est situé à l'extérieur du circuit par rapport à son siège, et s'ouvre en se déplaçant vers l'extérieur.A second group is of the type with external reach, in which the valve is located outside the circuit with respect to its seat, and opens by moving towards the outside.

Un inconvénient important de ces clapets est que le flux de fluide gazeux, lorsque lesdits clapets s'ouvrent, est principalement limité par la dimension du passage existant entre le siège du clapet et le clapet proprement dit, soit entre les surfaces utilisées pour l'étanchéité lorsque le clapet est fermé.An important drawback of these valves is that the flow of gaseous fluid, when said valves open, is mainly limited by the dimension of the passage existing between the seat of the valve and the valve itself, or between the surfaces used for sealing when the valve is closed.

Il en résulte une détérioration relativement rapide desdites surfaces par la nature même du fluide gazeux, par sa température, par les particules solides qu'il peut contenir et entrainer, ou simplement par les conditions de l'écoulement qui peuvent provoquer des problèmes de turbulences.This results in a relatively rapid deterioration of said surfaces by the very nature of the gaseous fluid, by its temperature, by the solid particles which it can contain and entrain, or simply by the flow conditions which can cause turbulence problems.

Un autre type de clapet se distingue par le fait que le mouvement du clapet n'est pas rectiligne suivant l'axe du dispositif, mais que le clapet se soulève en pivotant de façon à dégager totalement le passage du fluide. Ceci est une amélioration dans le cas de fonctionnement en purge, mais ne résoud pas le problème de la limitation du flux de fluide par les portées d'étanchéité lors d'un fonctionnement en décharge régulée, le contrôle de la décharge étant toujours assuré par le réglage de l'écartement des surfaces d'étanchéité du clapet et du siège.Another type of valve is distinguished by the fact that the movement of the valve is not straight along the axis of the device, but that the valve is raised by pivoting so as to completely clear the passage of the fluid. This is an improvement in the case of purge operation, but does not solve the problem of limiting the flow of fluid through the sealing surfaces during operation in regulated discharge, the control of the discharge being always ensured by the adjustment of the spacing of the valve and seat sealing surfaces.

Par ailleurs, et quel que soit le type de clapet, il peut être nécessaire de changer périodiquement les éléments d'étanchéité ou les joints destinés à assurer l'étanchéité du clapet. Dans les clapets précédemment décrits, cette opération de maintenance est malaisée et peut même étre dangereuse, car il est nécessaire d'intervenir en position clapet ouvert, et donc en contact éventuellement avec les gaz du circuit concerné.Furthermore, and whatever the type of valve, it may be necessary to periodically change the sealing elements or the seals intended to seal the valve. In the valves described above, this maintenance operation is difficult and can even be dangerous, because it is necessary to intervene in the open valve position, and therefore possibly in contact with the gases in the circuit concerned.

Le dispositif à clapet objet de la présente invention a pour but de réduire voire supprimer les inconvénients précités, et offre de plus des avantages qui seront décrits en détail ci-après.The purpose of the valve device of the present invention is to reduce or even eliminate the aforementioned drawbacks, and additionally offers advantages which will be described in detail below.

Un dispositif à clapet conforme à l'invention comporte un clapet, mobile suivant l'axe du dispositif à l'intérieur d'un corps de clapet possédant un siège d'étanchéité sur lequel peut venir en appui une portée dudit clapet de façon à séparer de façon étanche une zone située en aval du dispositif d'une zone située en amont dudit dispositif; celui-ci comprend également des moyens de commande du clapet destinés à déplacer et à maintenir dans une position déterminée ledit clapet.A valve device according to the invention comprises a valve, movable along the axis of the device inside a valve body having a sealing seat on which can bear a bearing of said valve so as to separate sealingly an area located downstream of the device from an area located upstream of said device; it also includes valve control means intended to move and maintain said valve in a determined position.

Selon l'invention, ledit dispositif comporte aussi un second siège placé en regard du siège d'étanchéité, et le clapet est commandé sélectivement par lesdits moyens de commande de façon que, outre la position dans laquelle la portée dudit clapet est en appui sur le siège d'étanchéité pour assurer l'étanchéité du dispositif et du circuit sur lequel ledit dispositif est installé, le clapet puisse être placé en position médiane entre les deux sièges pour ménager une section de passage maximale entre le clapet et le corps de clapet pour purger le circuit, et que dans des positions intermédiaires, une autre portée dudit clapet agisse en collaboration avec le second siège, ledit clapet étant maintenu dans une position choisie entre ladite position médiane et une position d'appui sur le second siège, pour limiter la section de passage entre le clapet et le second siège pour réguler la décharge du circuit.According to the invention, said device also comprises a second seat placed opposite the sealing seat, and the valve is selectively controlled by said control means so that, in addition to the position in which the range of said valve is supported on the sealing seat to seal the device and the circuit on which said device is installed, the valve can be placed in the middle position between the two seats to provide a maximum passage section between the valve and the valve body to purge the circuit, and that in intermediate positions, another bearing of said valve acts in collaboration with the second seat, said valve being held in a position chosen between said middle position and a support position on the second seat, to limit the passage section between the valve and the second seat to regulate the discharge of the circuit.

En particulier, le dispositif peut avoir un axe vertical et le siège d'étanchéité être situé du côté du dispositif le plus éloigné du circuit et être appelé siège supérieur. Le second siège est alors situé du côté du dispositif le plus proche du circuit et est appelé siège inférieur. Le clapet peut aussi être commandé pour venir en appui sur ledit siège inférieur, et ainsi pour isoler du circuit ledit siège supérieur.In particular, the device can have a vertical axis and the sealing seat can be located on the side of the device furthest from the circuit and be called the upper seat. The second seat is then located on the side of the device closest to the circuit and is called the lower seat. The valve can also be controlled to come to bear on said lower seat, and thus to isolate from the circuit said upper seat.

En fait le dispositif à clapet objet de l'invention a plusieurs fonctions, chaque position du clapet entre les deux sièges déterminant une fonction particulière:

  • a) d'étanchéité, lorsque le clapet est en position d'appui sur le siège supérieur
  • b) de purge, lorsque ledit clapet se trouve en position médiane entre le deux sièges inférieur et supérieur
  • c) de décharge régulée, lorsque ledit clapet est maintenu par un moyen de commande à une distance contrôlée du siège inférieur.
In fact, the valve device which is the subject of the invention has several functions, each position of the valve between the two seats determining a particular function:
  • a) sealing, when the valve is in the support position on the upper seat
  • b) purge, when said valve is in the middle position between the two lower and upper seats
  • c) regulated discharge, when said valve is maintained by a control means at a controlled distance from the lower seat.

Ledit clapet a de plus une quatrième position dite de "sécurité" lorsqu'il est en appui sur le siège inférieur.Said valve also has a fourth position called "safety" when it is supported on the lower seat.

La constitution de ce clapet comportant une double portée est destinée à séparer les diverses fonctions que doit remplir le dispositif à clapet. En effet, la partie supérieure du clapet et le siège supérieur sont destinés uniquement à assurer l'étanchéité, lorsque le clapet se trouve en appui sur ledit siège supérieur, et n'ont plus d'utilité fonctionnelle lorsque le clapet est en position de purge ou de décharge régulée.The constitution of this valve having a double bearing is intended to separate the various functions which the valve device must fulfill. Indeed, the upper part of the valve and the upper seat are intended only to seal, when the valve is in abutment on said upper seat, and no longer have any functional utility when the valve is in the purge position. or regulated discharge.

En particulier, dans cette dernière position de décharge régulée, la section de passage du fluide gazeux est déterminée par l'écartement existant entre le siège inférieur et le clapet.In particular, in this latter regulated discharge position, the cross section of the gaseous fluid is determined by the spacing existing between the lower seat and the valve.

En effet, le clapet étant situé entre sa position médiane, qui laisse une section de passage approximativement identique au niveau du siège inférieur et au niveau du siège supérieur, et sa position d'appui sur le siège inférieur, la section de passage entre le clapet et le siège supérieur est plus importante que la section de passage entre le clapet et le siège inférieur.Indeed, the valve being located between its middle position, which leaves an approximately identical passage section at the level of the lower seat and at the level of the upper seat, and its support position on the lower seat, the passage section between the valve and the upper seat is larger than the passage section between the valve and the lower seat.

Dans cette dernière position de décharge régulée, le flux de fluide gazeux est limité par la plus petite section de passage, donc la section de passage entre clapet et siège inférieur, et c'est dans cette zone d'écoulement rapide et de pression que les phénomènes de détérioration, dus entre autre à l'abrasion ou à la température, seront les plus manifestes, alors que la zone du siège supérieur sera soumise à un écoulement plus calme, et les portées assurant l'étanchéité seront ainsi protégées et auront une durée de vie allongée.In this latter regulated discharge position, the flow of gaseous fluid is limited by the smallest passage section, therefore the passage section between valve and lower seat, and it is in this zone of rapid flow and pressure that the phenomena of deterioration, due inter alia to abrasion or temperature, will be the most obvious, while the area of the upper seat will be subjected to a calmer flow, and the spans ensuring the seal will be thus protected and will have a duration of extended life.

Dans la position de purge, le clapet se trouve en position médiane, approximativement équidistant des sièges inférieur et supérieur, de façon que la section de passage entre le corps de clapet et le clapet lui-même soit maximale, et la perte de charge minimale lors de l'écoulement des gaz.In the purge position, the valve is in the middle position, approximately equidistant from the lower and upper seats, so that the passage section between the valve body and the valve itself is maximum, and the minimum pressure drop during of the gas flow.

Enfin, la position dite "de sécurité" du clapet, c'est-à-­dire lorsque ledit clapet se trouve en appui sur le siège inférieur, n'est pas destinée à assurer une étanchéité parfaite du circuit, mais principalement à permettre d'intervenir sur les surfaces d'étanchéité du siège supérieur et du clapet, en particulier pour remplacer des joints d'étanchéité, sans que le personnel de maintenance chargé de cette intervention soit incommodé par des émanations de gaz du circuit. Afin d'améliorer encore les conditions lors de ces opérations de maintenance, et s'il subsiste une légère fuite entre clapet et siège inférieur, on peut annuler celle-ci par la constitution d'un joint d'eau au niveau de la jonction clapet-siège.Finally, the so-called "safety" position of the valve, that is to say when said valve is in abutment on the lower seat, is not intended to ensure perfect sealing of the circuit, but mainly to allow intervene on the sealing surfaces of the upper seat and the valve, in particular to replace seals, without the maintenance personnel responsible for this intervention being inconvenienced by gas fumes from the circuit. In order to further improve the conditions during these maintenance operations, and if there is a slight leak between valve and lower seat, it can be canceled by the constitution of a water seal at the valve junction -seat.

D'autres caractéristiques et avantages apparaitront ci-­après lors de la description d'un dispositif à clapet conforme à l'invention, en relation avec les dessins annexés dans lesquels :

  • - la figure 1 représente une vue schématique en coupe axiale d'un dispositif à clapet selon l'invention ;
  • - la figure 2 représente une coupe axiale partielle du dispositif montrant plus précisément les détails de réalisation du siège supérieur ;
  • - la figure 3 représente schématiquement les diverses positions fonctionnelles du clapet :
    • . 3a : position étanchéité
    • . 3b : position purge
    • . 3c : position décharge régulée
    • . 3d : position dite "de sécurité".
Other characteristics and advantages will appear below when describing a valve device according to the invention, in relation to the appended drawings in which:
  • - Figure 1 shows a schematic view in axial section of a valve device according to the invention;
  • - Figure 2 shows a partial axial section of the device showing more precisely the details of the upper seat;
  • - Figure 3 shows schematically the various functional positions of the valve:
    • . 3a: sealing position
    • . 3b: purge position
    • . 3c: regulated discharge position
    • . 3d: so-called "safety" position.

Le dispositif à clapet représenté sur la figure 1 comprend un clapet bicone 2 comportant deux parties tronconiques mâles 21, 22 inversées et reliées au niveau de leurs plus grands diamètres, ledit clapet 2 étant mobile suivant l'axe du dispositif entre un siège supérieur 11 et un siège inférieur 12 d'un corps de clapet 1. Lesdits sièges 11, 12 sont également tronconiques, de conicité sensiblement identique à la conicité des parties tronconiques 21, 22 correspondantes du clapet 2, et également reliés au niveau de leur plus grand diamètre.The valve device shown in FIG. 1 comprises a bicone valve 2 comprising two inverted male frustoconical parts 21, 22 and connected at their largest diameters, said valve 2 being movable along the axis of the device between an upper seat 11 and a lower seat 12 of a valve body 1. Said seats 11, 12 are also frustoconical, of conicity substantially identical to the conicity of the corresponding frustoconical parts 21, 22 of the valve 2, and also connected at their largest diameter.

Les parties tronconiques 21, 22 du clapet 2 sont, dans le dispositif représenté figure 1, reliées par une partie cylindrique; de même les sièges tronconiques 11, 12 sont reliés par une partie cylindrique. Les dimensions et les formes des différentes parties constitutives du clapet 2 et du corps de clapet 1 sont déterminées de façon à assurer une section de passage suffisante, au regard du circuit où est installé le dispositif, entre le corps de clapet 1 et le clapet 2 lorsque celui-ci se trouve en position de purge. Cette section de passage est de préférence au moins égale à la section de raccordement du dispositif à clapet sur le circuit, de façon à ne pas créer une limitation du flux dans le corps du dispositif.The frustoconical parts 21, 22 of the valve 2 are, in the device shown in Figure 1, connected by a cylindrical part; similarly the frustoconical seats 11, 12 are connected by a cylindrical part. The dimensions and shapes of the various constituent parts of the valve 2 and of the valve body 1 are determined so as to ensure a sufficient passage cross-section, with regard to the circuit where the device is installed, between the valve body 1 and the valve 2 when it is in the purge position. This passage section is preferably at least equal to the connection section of the valve device on the circuit, so as not to create a limitation of the flow in the body of the device.

Par ailleurs, les formes du corps de clapet 1 et du clapet bicone 2 sont déterminées de manière à présenter les pertes de charges les plus faibles possibles pour faciliter l'éjection du fluide gazeux à évacuer. Dans ce but, il peut être avantageux de placer en partie basse du clapet 2, une partie conique 23 reliée au plus petit diamètre de la partie tronconique 22 du clapet 2, la pointe du cone étant dirigée vers l'intérieur du circuit de fluide.Furthermore, the shapes of the valve body 1 and of the bicone valve 2 are determined so as to present the lowest possible pressure drops to facilitate the ejection of the gaseous fluid to be discharged. For this purpose, it may be advantageous to place in the lower part of the valve 2, a conical part 23 connected to the smaller diameter of the frustoconical part 22 of the valve 2, the tip of the cone being directed towards the inside of the fluid circuit.

Afin de permettre la mise en place ou la dépose du clapet 2, le corps de clapet 1 est réalisé en deux parties. La partie la plus proche du circuit où est installé le dispositif à clapet est reliée audit circuit par des moyens de liaison assurant l'étanchéité, par exemple par bride et joints. Cette partie est constituée principalement par le siège inférieur 12 et la partie cylindrique du corps de clapet 1. La seconde partie est constituée par le siège supérieur 11 qui est relié de façon étanche par une bride 3 au corps de clapet 1 dont les dimensions internes au niveau de cette bride 3 sont telles qu'elles autorisent le passage du clapet 2 lors de sa mise en place ou de sa dépose.In order to allow the installation or removal of the valve 2, the valve body 1 is made in two parts. The part closest to the circuit where the valve device is installed is connected to said circuit by connecting means ensuring sealing, for example by flange and seals. This part consists mainly of the lower seat 12 and the cylindrical part of the valve body 1. The second part consists of the upper seat 11 which is tightly connected by a flange 3 to the valve body 1 whose internal dimensions at the level of this flange 3 are such that they allow the passage of the valve 2 during its installation or its removal.

Le dispositif à clapet comprend également des moyens de commande destinés à assurer la translation suivant l'axe du dispositif et le positionnement du clapet 2. Lesdits moyens de commande sont constitués d'une partie fixe reliée au corps de clapet 1 par un support 8, et d'une autre partie mobile suivant l'axe du dispositif et reliée au clapet 2. Lesdits moyens de commande peuvent être de diverses natures, et mus par diverses énergies. Une réalisation particulière consiste à utiliser un groupe hydroélectrique 4, lequel est supporté par une potence tripode 5 fixée rigidement au corps de clapet 1.The valve device also comprises control means intended to ensure the translation along the axis of the device and the positioning of the valve 2. Said control means consist of a fixed part connected to the valve body 1 by a support 8, and another movable part along the axis of the device and connected to the valve 2. Said control means can be of various natures, and moved by various energies. A particular embodiment consists in using a hydroelectric group 4, which is supported by a tripod bracket 5 rigidly fixed to the valve body 1.

Une réalisation particulièrement avantageuse consiste en ce que les liaisons du groupe de commande 4 avec le support 8 d'une part, et avec le clapet 2 d'autre part sont articulées et disposées de façon que leurs axes d'articulation soient orthogonaux entre eux et à l'axe du dispositif. Cette disposition donne une certaine liberté de mouvement du clapet par rapport à l'axe du dispositif et autorise son autocentrage sur les sièges inférieur et supérieur 11, 12, améliorant ainsi le contact et donc l'étanchéité entre le clapet 2 et lesdits sièges 11, 12.A particularly advantageous embodiment consists in that the connections of the control group 4 with the support 8 on the one hand, and with the valve 2 on the other hand are articulated and arranged so that their axes of articulation are orthogonal to each other and to the axis of the device. This arrangement gives a certain freedom of movement of the valve relative to the axis of the device and allows its self-centering on the lower and upper seats 11, 12, thus improving the contact and therefore the sealing between the valve 2 and said seats 11, 12.

Afin de guider le flux de fluide gazeux lorsque le clapet 2 est en position de purge ou de décharge régulée, et aussi pour protéger les moyens de commande, il est prévu sur le clapet 2 et sur le support 8 des jupes déflectrices 6, 7. Une de ces jupes déflectrices 7 est fixée sur le clapet 2 ; l'autre jupe 6 est fixée sur la potence tripode 5, et est constituée de façon à couliser dans la jupe 7 fixée sur le clapet 2 lorsque ledit clapet est manoeuvré par les moyens de commande 4. L'ensemble des jupes déflectrices est réalisé de façon que, quelle que soit la position du clapet 2, il y ait toujours au moins une paroi protectrice desdites jupes entre les moyens de commande et le fluide.In order to guide the flow of gaseous fluid when the valve 2 is in the regulated purge or discharge position, and also to protect the control means, it is provided on the valve 2 and on the support 8 of the deflector skirts 6, 7. One of these deflector skirts 7 is fixed on the valve 2 ; the other skirt 6 is fixed on the tripod bracket 5, and is constituted so as to slide in the skirt 7 fixed on the valve 2 when said valve is operated by the control means 4. The set of deflector skirts is made of so that, whatever the position of the valve 2, there is always at least one protective wall of said skirts between the control means and the fluid.

De plus, il peut être avantageux de réaliser lesdites jupes de façon à pouvoir réaliser l'aération et le refroidissement de l'espace situé à l'intérieur du clapet 2 et desdites jupes par des moyens de ventilation forcée. Cette ventilation renforce la protection thermique du groupe de commande.In addition, it may be advantageous to produce said skirts so as to be able to ventilate and cool the space located inside the valve 2 and said skirts by means of forced ventilation. This ventilation reinforces the thermal protection of the control group.

Toujours pour assurer la protection des zones du dispositif à clapet qui risquent une détérioration plus rapide, le siège supérieur 11 peut être pourvu de moyens de protection. Une réalisation d'un siège supérieur est représentée en coupe à la figure 2. Selon cette réalisation, la portée du siège supérieur 11 est pourvue de deux joints d'étanchéité 15 maintenus dans des gorges annulaires 14 réalisées dans la surface de portée dudit siège supérieur 11. Il est également possible de disposer ainsi un seul ou plusieurs joints d'étanchéité. Les gorges annulaires 14 ont une section transversale telle que les joints 15 qui sont placés dans lesdites gorges soient fermement maintenus et que ces joints 15 dépassent suffisamment de la surface de portée du siège supérieur 11 pour recevoir l'appui de la partie tronconique 21 du clapet 2 en position d'étanchéité.Still to ensure the protection of the areas of the valve device which risk more rapid deterioration, the upper seat 11 may be provided with protective means. An embodiment of an upper seat is shown in section in FIG. 2. According to this embodiment, the seat of the upper seat 11 is provided with two seals 15 held in annular grooves 14 produced in the bearing surface of said upper seat 11. It is also possible to have one or more seals in this way. The annular grooves 14 have a cross section such that the seals 15 which are placed in said grooves are firmly held and that these seals 15 protrude sufficiently from the bearing surface of the upper seat 11 to receive the support of the frustoconical part 21 of the valve 2 in sealing position.

Il est également prévu au niveau de la bride 3, un léger débord vers l'intérieur, par rapport à la surface de portée du siège supérieur 11 de façon à ménager entre ce débord et la partie tronconique 21 du clapet 2 une zone de décompression 19.It is also provided at the level of the flange 3, a slight inward projection, relative to the bearing surface of the upper seat 11 so as to provide between this projection and the frustoconical part 21 of the valve 2 a decompression zone 19 .

Pour assurer le refroidissement du siège supérieur 11, il est prévu à sa périphérie une chambre refroidie 17 annulaire, dont la face de portée du siège supérieur 11 constitue une paroi, et dans laquelle peut circuler un fluide réfrigérant.To cool the upper seat 11, an annular cooled chamber 17 is provided at its periphery, of which the bearing face of the upper seat 11 constitutes a wall, and in which a cooling fluid can circulate.

Le siège supérieur comporte encore à la périphérie de la chambre refroidie 17, une autre chambre annulaire appelée chambre d'injection 18. Cette chambre d'injection 18 est reliée, par des busettes d'injection 13, à la portée du siège supérieur 11 et à une chambre d'éjection 16. Cette chambre d'éjection 16 est constituée d'un évidement annulaire prévu au niveau de la circonférence intérieure du plan de joint entre le corps de clapet 1 et la bride 3.The upper seat also comprises, at the periphery of the cooled chamber 17, another annular chamber called the injection chamber 18. This injection chamber 18 is connected, by injection nozzles 13, to the range of the upper seat 11 and to an ejection chamber 16. This ejection chamber 16 consists of an annular recess provided at the level of the internal circumference of the joint plane between the valve body 1 and the flange 3.

Les busettes d'injection 13 sont constituées de portions de tubes traversant de façon étanche la chambre refroidie 17 et sont réparties sur tout le pourtour du siège supérieur 11.The injection nozzles 13 consist of portions of tubes sealingly passing through the cooled chamber 17 and are distributed over the entire periphery of the upper seat 11.

Des bouchons de nettoyage 20 sont prévus, en concordance avec la position des busettes d'injection 13 afin de permettre d'accéder à l'intérieur desdites busettes pour les nettoyer et éventuellement désobstruer leur orifice débouchant sur la portée du siège supérieur 11 ou dans la chambre d'éjection 16.Cleaning plugs 20 are provided, in accordance with the position of the injection nozzles 13 in order to allow access to the interior of said nozzles for cleaning and possibly unblocking their orifice opening onto the seat of the upper seat 11 or in the ejection chamber 16.

L'ensemble des moyens d'injection comprenant la chambre d'injection 18, les busettes d'injection 13 et la chambre d'éjection 16 sert à insuffler un fluide éjecteur, par exemple air ou vapeur ou azote, dès que le clapet s'écarte du siège supérieur.The set of injection means comprising the injection chamber 18, the injection nozzles 13 and the ejection chamber 16 serves to inject an ejector fluid, for example air or vapor or nitrogen, as soon as the valve s' away from the upper seat.

L'insufflation de fluide éjecteur est destinée, en collaboration avec les formes du siège supérieur 11 à éviter l'encrassement des portées et l'usure par abrasion et à protéger les joints d'étanchéité. En effet, le fluide éjecteur va d'une part nettoyer la portée des éventuels dépôts qui peuvent s'y être déposés, et d'autre part, créer, grâce à la chambre d'éjection 16, un "matelas" de fluide "propre" empêchant le fluide gazeux traversant le dispositif à clapet de venir en contact avec la portée du siège supérieur 11.The blowing of ejector fluid is intended, in collaboration with the shapes of the upper seat 11 to avoid fouling of the surfaces and wear by abrasion and to protect the seals. Indeed, the ejector fluid will on the one hand clean the scope of any deposits that may be deposited there, and on the other hand, create, thanks to the ejection chamber 16, a clean "fluid" mattress " "preventing the gaseous fluid passing through the valve device from coming into contact with the seat of the upper seat 11.

De l'ensemble de la description qui précède, il ressort que le dispositif à clapet objet de l'invention présente de nombreux avantages, tant au plan du fonctionnement que de sa réalisation. La dissociation des fonctions étanchéité et décharge régulée est un facteur important de longévité du dispositif et de meilleure tenue de l'étanchéité. Le remplacement des joints d'étanchéité peut se faire dans des conditions de sécurité indéniable lorsque le clapet est dans la position "sécurité". Cette intervention est possible même si le circuit est sous pression, grâce à la possibilité de constituer un joint d'eau, et en effectuant un calage approprié du clapet.From all of the foregoing description, it appears that the valve device which is the subject of the invention has numerous advantages, both in terms of operation and of its production. The separation of the sealing and regulated discharge functions is a important factor in the longevity of the device and better sealing performance. The replacement of the seals can be done under undeniable safety conditions when the valve is in the "safety" position. This intervention is possible even if the circuit is under pressure, thanks to the possibility of constituting a water seal, and by performing an appropriate setting of the valve.

La conception simple du dispositif à clapet, avec des éléments modulaires facilement démontables, en rend la réalisation et l'installation aisée et d'un faible coût. De plus l'encombrement perpendiculairement à l'axe du dispositif peut être pratiquement réduit à la circonférence du corps de clapet, sans éléments débordant de cette circonférence.The simple design of the valve device, with easily removable modular elements, makes its realization and installation easy and low cost. In addition, the size perpendicular to the axis of the device can be practically reduced to the circumference of the valve body, without elements extending beyond this circumference.

L'adaptation de divers moyens de commande est particulièrement simple, de même que l'adaptation du dispositif à des applications diverses selon les caractéristiques du circuit du fluide. En particulier, les matériaux constitutifs du corps 1, du clapet bicone 2, du siège supérieur d'étanchéité 11, des jupes 6, 7 peuvent être de natures diverses telles que : acier mécano-soudé, acier coulé, fonte, alliages, matériaux composites ou autres matériaux. Le refroidissement du clapet et du siège supérieur ainsi que la protection par fluide éjecteur peuvent être adaptés à différentes utilisations par l'homme de l'art tout en restant dans le cadre de l'invention.The adaptation of various control means is particularly simple, as is the adaptation of the device to various applications according to the characteristics of the fluid circuit. In particular, the constituent materials of the body 1, of the bicone valve 2, of the upper sealing seat 11, of the skirts 6, 7 can be of various natures such as: welded steel, cast steel, cast iron, alloys, composite materials or other materials. The cooling of the valve and of the upper seat as well as the protection by ejector fluid can be adapted to different uses by those skilled in the art while remaining within the scope of the invention.

Le dispositif à clapet peut trouver de nombreuses applications dans toutes les industries utilisant des circuits fluides gazeux tels que réseaux de gaz, vapeur, etc.The valve device can find numerous applications in all industries using gaseous fluid circuits such as gas networks, steam, etc.

En sidérurgie, il trouve une application particulière dans la mise à l'atmosphère des gueulards de haut-fourneaux, lors d'arrêts programmés.In the steel industry, it finds a particular application in the venting of blast furnace mouths, during scheduled shutdowns.

Claims (12)

1. Dispositif à clapet pour l'étanchéité, la purge ou la décharge régulée d'un circuit de fluide gazeux comprenant un clapet (2) mobile suivant un axe à l'intérieur d'un corps de clapet (1), ledit corps de clapet (1) possédant un siège d'étanchéité (11) sur lequel peut venir en appui une portée (21) dudit clapet (2) de façon à séparer de façon étanche une zone située en aval du dispositif d'une zone située en amont dudit dispositif, comprenant également des moyens de commande du clapet (2) destinés à déplacer et à maintenir dans une position déterminée ledit clapet (2), caractérisé en ce que ledit corps de clapet (1) comporte également un second siège (12) placé en regard du siège d'étanchéité (11), et en ce que ledit clapet (2) est commandé sélectivement par lesdits moyens de commande de façon que, outre la position dans laquelle la portée (21) dudit clapet (2) est en appui sur le siège d'étanchéité (11) pour assurer l'étanchéité du dispositif et du circuit sur lequel ledit dispositif est installé, le clapet (2) puisse être placé en position médiane entre les deux sièges (11, 12) pour ménager une section de passage maximale entre le clapet (2) et le corps de clapet (1) pour purger le circuit, et que dans des positions intermédiaires, une autre portée (22) dudit clapet (2) agisse en collaboration avec le second siège (12), ledit clapet (2) étant maintenu dans une position choisie entre ladite position médiane et une position d'appui sur le second siège (12), pour limiter la section de passage entre le clapet (2) et le second siège (12) pour réguler la décharge du circuit.1. Valve device for sealing, purging or regulated discharge of a gaseous fluid circuit comprising a valve (2) movable along an axis inside a valve body (1), said valve body valve (1) having a sealing seat (11) on which a bearing surface (21) of said valve (2) can come to bear so as to sealingly separate an area located downstream of the device from an area located upstream of said device, also comprising valve control means (2) intended to move and maintain in a determined position said valve (2), characterized in that said valve body (1) also comprises a second seat (12) placed opposite the sealing seat (11), and in that said valve (2) is selectively controlled by said control means so that, in addition to the position in which the bearing surface (21) of said valve (2) is supported on the sealing seat (11) to seal the device and the circuit on which said device is installed, the valve (2) can be placed in the middle position between the two seats (11, 12) to provide a maximum passage section between the valve (2) and the valve body (1) to purge the circuit, and that in intermediate positions, another bearing (22) of said valve (2) acts in collaboration with the second seat (12), said valve (2) being held in a position chosen between said middle position and a support position on the second seat (12), to limit the passage section between the valve (2) and the second seat (12) to regulate the discharge of the circuit. 2. Dispositif selon la revendication 1, caractérisé en ce que le siège d'étanchéité (11) est situé du côté du dispositif le plus éloigné du circuit, en ce que le second siège (12) est situé du côté du dispositif le plus proche du circuit, et en ce que le clapet (2) peut être commandé pour venir en appui sur ledit second siège (12) pour isoler du circuit ledit premier siège (11).2. Device according to claim 1, characterized in that the sealing seat (11) is located on the side of the device furthest from the circuit, in that the second seat (12) is located on the side of the closest device of the circuit, and in that the valve (2) can be controlled to come to bear on said second seat (12) to isolate from the circuit said first seat (11). 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le clapet (2) comporte deux parties tronconiques males (21, 22) inversées et reliées au niveau de leurs plus grands diamètres, et en ce que les sièges (11, 12) du corps (1) de clapet sont également tronconiques, de conicité sensiblement identique à la conicité des parties tronconiques (21, 22) correspondantes du clapet (2), et également reliées au niveau de leurs plus grands diamètres de façon à assurer une section de passage suffisante, au regard du circuit où est installé le dispositif, entre le corps (1) de clapet et le clapet (2) lorsque celui-ci se trouve en position médiane entre les deux sièges (11, 12).3. Device according to claim 1 or 2, characterized in that the valve (2) comprises two male frustoconical parts (21, 22) reversed and connected at their largest diameters, and in that the seats (11, 12) of the valve body (1) are also frustoconical, of conicity substantially identical to the conicity of the corresponding frustoconical parts (21, 22) of the valve (2), and also connected at the level of their largest diameters so as to ensure a sufficient passage section, with regard to the circuit where the device is installed, between the valve body (1) and the valve (2) when the latter is in the middle position between the two seats (11, 12). 4. Dispositif selon la revendication 3, caractérisé en ce que le premier siége (11) est relié de façon étanche par une bride (3) au corps (1) dont les dimensions internes au niveau de cette bride (3) sont telles qu'elles autorisent le passage du clapet (2) lors de la mise en place dudit clapet (2) dans le dispositif, ou lors de sa dépose.4. Device according to claim 3, characterized in that the first seat (11) is tightly connected by a flange (3) to the body (1) whose internal dimensions at the level of this flange (3) are such that they allow the passage of the valve (2) during the installation of said valve (2) in the device, or during its removal. 5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend un moyen de commande destiné à assurer la translation et le positionnement du clapet (2), ledit moyen de commande étant constitué d'une partie fixe reliée au corps (1) de clapet par un support (8), et d'une autre partie, mobile suivant l'axe du dispositif et reliée au clapet (2) les liaisons du clapet avec le moyen de commande d'une part, et du moyen de commande avec le support (8) d'autre part, étant articulées et disposées de façon que leurs axes d'articulation soient orthogonaux entre eux et à l'axe du dispositif.5. Device according to one of claims 1 to 4, characterized in that it comprises a control means intended to ensure the translation and the positioning of the valve (2), said control means consisting of a fixed part connected to the body (1) of the valve by a support (8), and from another part, movable along the axis of the device and connected to the valve (2), the connections of the valve with the control means on the one hand, and control means with the support (8) on the other hand, being articulated and arranged so that their axes of articulation are orthogonal to each other and to the axis of the device. 6. Dispositif selon la revendication 5, caractérisé en ce que ledit moyen de commande est constitué d'un groupe hydroélectrique (4), supporté par une potence tripode (5) fixée rigidement au corps (1) de clapet.6. Device according to claim 5, characterized in that said control means consists of a hydroelectric group (4), supported by a tripod bracket (5) rigidly fixed to the body (1) of valve. 7. Dispositif selon l'une des revendications 5 ou 6, caractérisé en ce qu'il comporte des jupes déflectrices (6, 7) disposées de façon à guider le flux de fluide gazeux lorsque le clapet (2) est en position de purge ou de décharge régulée, et à protéger les moyens de commande, lesdites jupes déflectrices (6, 7) étant fixées respectivement sur le clapet (2) et sur le support (8) et pouvant coulisser l'une dans l'autre lors du déplacement du clapet (2).7. Device according to one of claims 5 or 6, characterized in that it comprises deflector skirts (6, 7) arranged so as to guide the flow of gaseous fluid when the valve (2) is in the bleed position or of regulated discharge, and to protect the control means, said deflector skirts (6, 7) being fixed respectively on the valve (2) and on the support (8) and being able to slide one inside the other during the movement of the valve (2). 8. Dispositif selon la revendication 3, caractérisé en ce que le premier siège (11) est pourvu de joints d'étanchéité (15) maintenus dans des gorges annulaires (14) réalisées dans la surface de portée dudit premier siège (11).8. Device according to claim 3, characterized in that the first seat (11) is provided with seals (15) held in annular grooves (14) formed in the bearing surface of said first seat (11). 9. Dispositif selon la revendication 4, caractérisé en ce que le premier siège (11) est muni sur sa périphérie d'une chambre refroidie (17) annulaire dans laquelle peut circuler un fluide réfrigérant.9. Device according to claim 4, characterized in that the first seat (11) is provided on its periphery with a cooled annular chamber (17) in which a cooling fluid can circulate. 10. Dispositif selon la revendication 9, caractérisé en ce que le premier siège (11) comporte dans moyens d'insufflation d'un fluide protecteur au niveau de la portée dudit premier siège (11) répartis sur la circonférence dudit siège (11).10. Device according to claim 9, characterized in that the first seat (11) comprises in means for blowing a protective fluid at the level of the range of said first seat (11) distributed over the circumference of said seat (11). 11. Dispositif selon la revendication 10, caractérisé en ce que lesdits moyens d'insufflation d'un fluide protecteur comprennent une chambre d'injection (18) annulaire située à la périphérie de la chambre refroidie (17), reliée par des busettes d'injection (13) d'une part à la portée du premier siège (11) et d'autre part à une chambre d'éjection (16) constituée d'un évidement annulaire prévu au niveau de la circonférence intérieure du plan de joint entre le corps de clapet (1) et la bride (3).11. Device according to claim 10, characterized in that said means for blowing a protective fluid comprises an annular injection chamber (18) located at the periphery of the cooled chamber (17), connected by nozzles injection (13) on the one hand within reach of the first seat (11) and on the other hand to an ejection chamber (16) constituted by an annular recess provided at the level of the internal circumference of the plane of joint between the valve body (1) and the flange (3). 12. Dispositif selon la revendication 7, caractérisé en ce qu'il comporte des moyens de ventilation forcée de l'intérieur des jupes déflectrices (6, 7).12. Device according to claim 7, characterized in that it comprises means of forced ventilation from the inside of the deflector skirts (6, 7).
EP87400253A 1986-02-07 1987-02-04 Multipurpose blow-off cock Expired - Lifetime EP0233118B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8601725 1986-02-07
FR8601725A FR2594203B1 (en) 1986-02-07 1986-02-07 MULTIFUNCTIONAL PURGE VALVE

Publications (2)

Publication Number Publication Date
EP0233118A1 true EP0233118A1 (en) 1987-08-19
EP0233118B1 EP0233118B1 (en) 1991-07-03

Family

ID=9331933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400253A Expired - Lifetime EP0233118B1 (en) 1986-02-07 1987-02-04 Multipurpose blow-off cock

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US (1) US4796665A (en)
EP (1) EP0233118B1 (en)
JP (1) JPS62184279A (en)
DE (1) DE3771084D1 (en)
ES (1) ES2024527B3 (en)
FR (1) FR2594203B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9657854B2 (en) 2015-01-28 2017-05-23 Green Drain, Inc. Sliding skirt valve
CN106931176B (en) * 2017-02-28 2022-11-22 中冶华天南京工程技术有限公司 Expansion opening blow-off valve for blast furnace

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB436684A (en) * 1934-08-01 1935-10-16 Cockburns Ltd Improvements in stop valves
US2195866A (en) * 1939-07-26 1940-04-02 Clarick Mike Le Blast furnace
FR917467A (en) * 1944-11-16 1947-01-08 Usines De Louis De Roll S A So Annular drawer
CH516758A (en) * 1971-01-18 1971-12-15 Rickenbach Hugo Quick-closing valve
DE3102784A1 (en) * 1981-01-28 1982-08-26 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Valve for hot-gas pipes

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US1835020A (en) * 1930-05-27 1931-12-08 Forest George W De Gauge valve
US2111858A (en) * 1936-04-20 1938-03-22 Oluf F Jensen Automatic oiler
US3090593A (en) * 1958-12-18 1963-05-21 Air Placement Equipment Compan Shut-off valve for cementitious pressure vessels
CH389994A (en) * 1962-01-29 1965-03-31 Saurer Ag Adolph Speed regulation for gas turbine systems operated with liquid fuel
GB1594820A (en) * 1976-12-20 1981-08-05 Mittelmann Gmbh & Co Kg Sealable container for a flowablematerial
DE2916311C2 (en) * 1979-04-23 1981-04-23 Beth GmbH, 2400 Lübeck Disk valve, in particular for installation in pipeline systems of dust extraction systems
DE3238059A1 (en) * 1982-10-14 1984-04-19 Claudius Peters Ag, 2000 Hamburg SHUT-OFF ARRANGEMENT FOR A CONVEYOR PIPE FOR LUBRICATING, SOLIDS CONTAINING SOLIDS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB436684A (en) * 1934-08-01 1935-10-16 Cockburns Ltd Improvements in stop valves
US2195866A (en) * 1939-07-26 1940-04-02 Clarick Mike Le Blast furnace
FR917467A (en) * 1944-11-16 1947-01-08 Usines De Louis De Roll S A So Annular drawer
CH516758A (en) * 1971-01-18 1971-12-15 Rickenbach Hugo Quick-closing valve
DE3102784A1 (en) * 1981-01-28 1982-08-26 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Valve for hot-gas pipes

Also Published As

Publication number Publication date
ES2024527B3 (en) 1992-03-01
JPS62184279A (en) 1987-08-12
EP0233118B1 (en) 1991-07-03
FR2594203A1 (en) 1987-08-14
DE3771084D1 (en) 1991-08-08
FR2594203B1 (en) 1988-06-03
US4796665A (en) 1989-01-10

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