[go: up one dir, main page]

EP0320841B1 - Device for coupling a metallurgical ladle to the gas supply - Google Patents

Device for coupling a metallurgical ladle to the gas supply Download PDF

Info

Publication number
EP0320841B1
EP0320841B1 EP88120707A EP88120707A EP0320841B1 EP 0320841 B1 EP0320841 B1 EP 0320841B1 EP 88120707 A EP88120707 A EP 88120707A EP 88120707 A EP88120707 A EP 88120707A EP 0320841 B1 EP0320841 B1 EP 0320841B1
Authority
EP
European Patent Office
Prior art keywords
ladle
base
male
connection member
action
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.)
Expired - Lifetime
Application number
EP88120707A
Other languages
German (de)
French (fr)
Other versions
EP0320841B2 (en
EP0320841A2 (en
EP0320841A3 (en
Inventor
Hubert Stomp
Jean-Pierre Barthel
Albert Feitler
Fred Parasch
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19730999&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0320841(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT88120707T priority Critical patent/ATE102259T1/en
Publication of EP0320841A2 publication Critical patent/EP0320841A2/en
Publication of EP0320841A3 publication Critical patent/EP0320841A3/en
Publication of EP0320841B1 publication Critical patent/EP0320841B1/en
Application granted granted Critical
Publication of EP0320841B2 publication Critical patent/EP0320841B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor

Definitions

  • Said coupling station comprises a first pneumatic translation cylinder, from which a second pneumatic coupling cylinder is suspended in a pendulum.
  • the latter axially supports a female connection element which is connected to said gas distribution network.
  • This female element can be engaged under the action of the two pneumatic cylinders on a male connection element which is arranged on the metallurgical ladle and connected to a gas pipe installed thereon.
  • the object of the present invention is to provide a device for automatically connecting a metallurgical ladle to a gas network, which comprises a male connection element which can be axially engaged in a female connection element, and which can also be used when the side access to the pocket is difficult, if not impossible.
  • the proposed device therefore allows automatic coupling of the bag to the gas network, without manual intervention and without any other operation than the simple introduction of the bag into the structure receiving the bag.
  • the proposed device uses the movement of the pocket to achieve the junction of the male and female connecting element.
  • the proposed device comprises a base which is carried by the receiving structure so as to be able to slide in two mutually perpendicular directions against the action of springs.
  • the female element is preferably mounted in the foot so as to be able to slide vertically against the action of a spring provided inside the foot.
  • the male connection element has the shape of a cone with a rounded top
  • the female connection element has the shape of a conical cup open in the coupling direction.
  • the bottom of the bowl is rounded to match the curvature of the top of the connection head.
  • the rounded top of the male element is advantageously provided with an O-ring sealing the connection.
  • the male connection element comprises a passage communicating with said gas distribution network and opening axially from the male element at its rounded apex, a valve mounted in this passage so as to cut communication with the gas network under the action of a spring, and a plunger axially slidable in this passage so as to open, by axial penetration in the male element, said valve against the action of its spring.
  • Said plunger opens advantageously with one end of the rounded top, so that its penetration into the male element occurs automatically during the axial engagement of the female element on the male element. In other words, the engagement of the female element on the connection head opens the valve against the action of its spring.
  • the base supporting the male element is provided on the side opposite to the male element with a cavity having the shape of a parallelepiped.
  • the bottom of this cavity defines a sliding plane perpendicular to the connecting axis, which is supported and can slide on a support block secured to the structure receiving the pocket.
  • This block is crossed by two sets of rods superimposed on a cross and sliding in the block. The ends of these rods are provided with pads which are in sliding support along opposite walls of said cavity. The self-centering of the male element in the female element, during the coupling action, is done accordingly by sliding the base on the support block.
  • At least one rod of each set of rods is surrounded by two springs mounted between the outer pads and the support block, to ensure a central position of the base relative to the support block.
  • the base is mounted in a housing in which it can be slid in a first direction defined by guide rods which pass through it and which are fixed in the housing.
  • This housing is slidable in a second direction in a frame secured to the structure receiving the pocket. Said second direction is perpendicular to said first direction and is defined by guide rods fixed in the chassis.
  • the base and its housing are preferably maintained in a central position relative to the chassis under the action of springs mounted between the base and its housing on the one hand, and between the housing and the chassis on the other hand.
  • Figure 1 shows a female connection element telescopically mounted in a foot 12, which is in turn fixed to the lower part of the outer wall of a metallurgical ladle 14 as shown in Figure 2.
  • Element 10 can be pressed a certain distance into the foot 12 against the action of a helical spring 16 disposed around the body 18 of the element 10 and bearing respectively on an internal shoulder of the foot 12 and an external shoulder of the body 18.
  • the element 10 is traversed axially by a passage 20 which communicates with an external pipe 22, connecting the foot 12 to the hollow part of the bottom of the pocket 14.
  • the lower part of the connection element 10 comprises a bowl 24 of shape generally conical, open at the bottom and with a rounded bottom.
  • This bowl 24 is used to receive a male connection head 26 also of conical shape, but at a greater inclination than the conicity of the bowl 24.
  • This connection head 26 has a rounded top conforming to the curvature of the bottom of the bowl 24 of so as to follow the shape of it.
  • An O-ring 28 provided on the top 26a of the head 26 seals when the elements are coupled as shown in FIG. 1.
  • the head 26 is mounted on a base 30 which is carried by the bottom 32 of the support for the bag 14. According to one of the features of the device proposed, the base 30 has two horizontal degrees of freedom relative to the support 32.
  • the base 30 comprises, for this purpose, a lower cavity 34 with an open bottom, of rectangular or square section and with vertical internal walls.
  • the base 30 is engaged by this cavity 34 on a support block 36, integral with the bottom 32 of the support.
  • the upper surface of this block 36 is preferably provided with an upper sliding layer 38 which carries the base 30 while allowing relatively easy sliding thereof on the block 36.
  • a guide system which maintains it relative to the support block 36.
  • a first set of rods 40 is slidably housed in the block 36 and comprises at its opposite ends two pads 42, 44 sliding on the opposite vertical walls of the base 30.
  • the studs 46 and 48 act as a stop, preventing the inadvertent lifting of the base 30.
  • This base can slide in the direction perpendicular to the plane of FIG. 1 by relative movements between the pads 42, 44 and guide surfaces 46, 48 of the base.
  • a second set of rods 50 is arranged perpendicular to the set of rods 40 in the block 36 and also includes, like these, pads not shown, bearing on the vertical walls not visible in the figure of the base 30.
  • the pads of these rods allow a displacement of the base 30 to the left and the right in the figure 1 by sliding the rods 40 in the support block 36.
  • each rod of each set of rods 40 and 50 is surrounded by two helical springs 52, 54 bearing respectively on the block 36 and each of the two outer pads 42, 44.
  • the sliding of the base 30 in the plane of Figure 1 is made against the action of one of the springs 52, 54 while the sliding in the direction perpendicular to the plane of Figure 1 is made against the action of the springs of the set of rods 50.
  • FIG. 2 schematically illustrates these degrees of freedom by arrows defining a rectangle of freedom of movement whose sides are 50 by 100 mm.
  • the base 30 further comprises an internal pipe 56 for the admission of the gases for processing the liquid metal contained in the pocket 14 and which is connected to an articulated or flexible pipe 59 of the gas distribution network.
  • this pipe 59 has rotary connectors 61 to allow the base 30 to move on the bottom 32 of the bag support.
  • the channel 56 opens into a chamber 58 provided in the upper part of the base 30 and in the interior of the connection head 26 and which is extended by an axial passage 60 towards the top 26a of this head.
  • this chamber 58 there is an automatic valve for automatically cutting or establishing communication with the pipe 59 of the gas network.
  • This valve consists of a piston 62 sliding axially in a guide sleeve 64 which is surrounded by a spring 66.
  • This spring 66 applies the piston 62, which is provided with an O-ring 68, against a shoulder defined between the chamber 58 and passage 60 to close the valve.
  • the opening of the valve, against the action of the spring 66 is carried out using a plunger 70 disposed in the passage 60 and resting freely on the piston 62.
  • the plunger 70 has an appropriate section so as not to block. the passage of gas, for example a cross-shaped section as shown in a medallion.
  • the length of the plunger 70 is slightly greater than that of the passage 60 so that its upper end exceeds the top of the head 26 when the valve is closed and that it can be depressed by the installation of the female connection element 10 to open this valve as shown in Figure 1.
  • the proposed device uses the movement of the bag to automatically connect to the gas network.
  • the descent of the foot 12 in the direction of the base 30 ensures, from the penetration of the head 26 in the bowl 24, a self-centering of these connection elements by sliding of the base 30 on its support.
  • the complementary curvatures of the top 26a of the head 26 and of the bottom of the bowl 24 also make it possible to compensate for small misalignments.
  • the automatic valve is opened by depressing the plunger 70 as soon as the latter is actuated by the bottom of the bowl 24.
  • the connection finally ends with a slight penetration of the female connection element 10 in the foot 12 against the action of the spring 16.
  • the coupling elements are the same as those in the embodiment of Figure 1, except that the coil spring 16 has been replaced by a spring discs 80 and that the flat-head piston 62 of the automatic valve has been replaced by a conical piston 82.
  • the mounting of the base 84 of the male connection element 26 to ensure two degrees of freedom from the support is carried by two rods 86, 88 which pass through it and which are integral with a housing 92 surrounding the base 84. This base can slide axially on these rods 86, 88 thanks to the presence of sockets balls 90 around each of these rods 86, 88.
  • the central position of the base 84 in the housing 92 is ensured by springs 94, 96 arranged on either side of the base 84 and bearing on the housing 92.
  • the assembly formed by the base 84 and the housing 92 is carried, in turn, by two superimposed rods 98, 100 passing through this assembly and which are integral with a frame 102 fixed on the floor of the pocket support.
  • This sliding of the base 84 and of the housing 92 to the left and to the right in FIG. 3 is facilitated by ball bushings 104, provided around the rods 98 and 100 at the level of the passage through the housing 92.
  • the central position of the housing 92 compared to chassis 102 is provided by springs 106 provided at least on one of the rods 98 or 100 on either side of the housing 92 and bearing on the chassis 102.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

An apparatus for coupling a metallurgical ladle to a gas supply is presented wherein gas is used for the treatment of molten metal contained in the ladle. The gas is injected through the bottom of the ladle into the liquid metal. The ladle rests on a support located at a treatment station. The apparatus comprises a base mounted on the bottom of the ladle support in a manner as to be slidable in two directions at right angles to one another against the action of springs. The apparatus is provided with a male connection head which has an axial through passage that communicates with the gas supply. This apparatus also includes a foot fixed on the ladle which is provided with a female connection member for engagement on the connection head when the ladle is placed in its support.

Description

La présente invention concerne de façon générale un dispositif de raccordement automatique d'une poche métallurgique à un réseau de gaz. La poche est introduite à cet effet dans une structure de réception et ledit dispositif comprend de façon connue en soi un élément de raccordement mâle engageable axialement dans un élément de raccordement femelle de façon à établir une communication entre le réseau de gaz et une conduite solidaire de la poche.The present invention generally relates to a device for automatically connecting a metallurgical ladle to a gas network. The bag is introduced for this purpose into a receiving structure and said device comprises in a manner known per se a male connection element which can be axially engaged in a female connection element so as to establish communication between the gas network and a pipe integral with the pocket.

Il est par exemple connu de traiter l'acier pour des besoins métallurgiques en injectant un gaz dans les poches contenant le métal liquide. Cette injection est effectuée dans une station de traitement à travers une partie poreuse du fond de la poche, laissant passer le gaz mais retenant le métal liquide. Le raccordement au réseau de gaz est généralement réalisé par voie manuelle. Inutile de dire que, vu l'environnement, ceci est une opération à risque d'accident et constitue, en outre, une perte de temps.It is for example known to treat steel for metallurgical needs by injecting a gas into the pockets containing the liquid metal. This injection is carried out in a treatment station through a porous part of the bottom of the bag, letting pass the gas but retaining the liquid metal. Connection to the gas network is generally carried out manually. Needless to say, considering the environment, this is an accident risk operation and is also a waste of time.

Pour éviter le raccordement manuel, on a déjà proposé un accouplement semi-automatique, dans lequel une tête d'accouplement est raccordée, sous l'action d'un vérin, à l'un des tourillons latéraux de suspension de la poche, ce tourillon étant relié par un passage interne et une conduite externe à la brique poreuse du fond de la poche. Etant donné que le tourillon doit être prévu spécialement pour le raccordement à cette tête d'accouplement, ce système ne peut être adapté à des poches existantes. En outre, selon la conception de la station de traitement, l'accès latéral à la poche peut être difficile, voire impossible.To avoid manual connection, a semi-automatic coupling has already been proposed, in which a coupling head is connected, under the action of a jack, to one of the lateral suspension pins of the pocket, this pin being connected by an internal passage and an external pipe to the porous brick of the bottom of the pocket. Since the pin must be specially designed for connection to this coupling head, this system cannot be adapted to existing pockets. In addition, depending on the design of the processing station, lateral access to the bag may be difficult, if not impossible.

Dans la revue "STAHL und EISEN", vol. 107, No 25-26 du 14 décembre 1987, page 1213, on présente dans un article intitulé "Automatisches Ankuppeln der Spülgasleitung an Giesspfannen" une station d'accouplement permettant d'éviter un raccordement manuel de la poche au réseau de distribution de gaz. Ladite station d'accouplement comprend un premier cylindre pneumatique de translation, auquel est suspendu en balancier un deuxième cylindre pneumatique d'accouplement. Ce dernier supporte axialement un élément de raccordement femelle qui est raccordé audit réseau de distribution de gaz. Cet élément femelle est engageable sous l'action des deux cylindres pneumatiques sur un élément de raccordement mâle qui est aménagé sur la poche métallurgique et raccordé à une conduite de gaz installée sur celle-ci. L'homme de l'art comprendra que cette station d'accouplement, qui est nécessaire au raccordement de l'élément mâle et femelle, est un mécanisme assez encombrant, pour lequel il est en pratique souvent impossible de trouver, sur la structure recevant la poche, la place nécessaire à son installation.In the review "STAHL und EISEN", vol. 107, No 25-26 of December 14, 1987, page 1213, we present in an article entitled "Automatisches Ankuppeln der Spülgasleitung an Giesspfannen" a coupling station allowing to avoid a manual connection of the bag to the gas distribution network. Said coupling station comprises a first pneumatic translation cylinder, from which a second pneumatic coupling cylinder is suspended in a pendulum. The latter axially supports a female connection element which is connected to said gas distribution network. This female element can be engaged under the action of the two pneumatic cylinders on a male connection element which is arranged on the metallurgical ladle and connected to a gas pipe installed thereon. Those skilled in the art will understand that this coupling station, which is necessary for the connection of the male and female element, is a fairly bulky mechanism, for which it is in practice often impossible to find, on the structure receiving the pocket, the space necessary for its installation.

Le but de la présente invention est de proposer un dispositif de raccordement automatique d'une poche métallurgique à un réseau de gaz, qui comprend un élément de raccordement mâle engageable axialement dans un élément de raccordement femelle, et qui peut aussi être utilisé lorsque l'accès latéral à la poche est difficile, voire impossible.The object of the present invention is to provide a device for automatically connecting a metallurgical ladle to a gas network, which comprises a male connection element which can be axially engaged in a female connection element, and which can also be used when the side access to the pocket is difficult, if not impossible.

Ce but est atteint par un dispositif d'accouplement présentant les caractéristiques de la première revendication.This object is achieved by a coupling device having the characteristics of the first claim.

Le dispositif proposé permet, par conséquent, un accouplement automatique de la poche au réseau de gaz, sans intervention manuelle et sans autre opération que la simple introduction de la poche dans la structure recevant la poche. En d'autre termes, le dispositif proposé utilise le mouvement de la poche pour réaliser la jonction de l'élément de raccord mâle et femelle.The proposed device therefore allows automatic coupling of the bag to the gas network, without manual intervention and without any other operation than the simple introduction of the bag into the structure receiving the bag. In other words, the proposed device uses the movement of the pocket to achieve the junction of the male and female connecting element.

Dans un mode de réalisation préféré le dispositif proposé comprend un socle qui est porté par la structure de réception de manière à pouvoir coulisser dans deux directions mutuellement perpendiculaires contre l'action de ressorts.In a preferred embodiment, the proposed device comprises a base which is carried by the receiving structure so as to be able to slide in two mutually perpendicular directions against the action of springs.

L'élément femelle est, de préférence, monté dans le pied de manière à pouvoir coulisser verticalement contre l'action d'un ressort prévu à l'intérieur du pied.The female element is preferably mounted in the foot so as to be able to slide vertically against the action of a spring provided inside the foot.

Selon une exécution préférentielle de l'invention, l'élément de raccordement mâle a la forme d'un cône à sommet arrondi, tandis que l'élément de raccordement femelle a la forme d'une cuvette conique ouverte dans la direction d'accouplement. Le fond de la cuvette est arrondi pour épouser la courbure du sommet de la tête de raccordement. Il sera noté que cette forme particulière des éléments de raccordement favorise un autoalignement et un auto-centrage de l'élément mâle et femelle lors de leur engagement réciproque. Grâce aux deux degrés de liberté de l'élément mâle on arrive ainsi à compenser automatiquement de petits défauts d'alignement.According to a preferred embodiment of the invention, the male connection element has the shape of a cone with a rounded top, while the female connection element has the shape of a conical cup open in the coupling direction. The bottom of the bowl is rounded to match the curvature of the top of the connection head. It will be noted that this particular shape of the connecting elements promotes self-alignment and self-centering of the male and female element during their mutual engagement. Thanks to the two degrees of freedom of the male element, we can thus automatically compensate for small misalignments.

Le sommet arrondi de l'élément mâle est avantageusement pourvu d'un joint torique assurant l'étanchéité du raccord.The rounded top of the male element is advantageously provided with an O-ring sealing the connection.

Dans une exécution préférentielle l'élément de raccordement mâle comporte un passage communiquant avec ledit réseau de distribution de gaz et débouchant axialement de l'élément mâle au niveau de son sommet arrondi, une soupape montée dans ce passage de façon à couper la communication avec le réseau de gaz sous l'action d'un ressort, et un plongeur coulissable axialement dans ce passage de façon à ouvrir, par pénétration axiale dans l'élément mâle, ladite soupape contre l'action de son ressort. Ledit plongeur débouche avantageusement avec une extrémité du sommet arrondi, de façon que sa pénétration dans l'élément mâle se fasse automatiquement lors de l'engagement axial de l'élément femelle sur l'élément mâle. En d'autres mots, l'engagement de l'élément femelle sur la tête de raccordement ouvre la soupape contre l'action de son ressort.In a preferred embodiment, the male connection element comprises a passage communicating with said gas distribution network and opening axially from the male element at its rounded apex, a valve mounted in this passage so as to cut communication with the gas network under the action of a spring, and a plunger axially slidable in this passage so as to open, by axial penetration in the male element, said valve against the action of its spring. Said plunger opens advantageously with one end of the rounded top, so that its penetration into the male element occurs automatically during the axial engagement of the female element on the male element. In other words, the engagement of the female element on the connection head opens the valve against the action of its spring.

Selon un premier mode de réalisation le socle supportant l'élément mâle est muni du côté opposé à l'élément mâle d'une cavité ayant la forme d'un parallélépipède. Le fond de cette cavité définit un plan de glissement perpendiculaire à l'axe de raccordement, qui s'appuie et peut glisser sur un bloc de support solidaire de la structure recevant la poche. Ce bloc est traversé par deux jeux de tiges superposés en croix et coulissables dans le bloc. Les extrémités de ces tiges sont pourvues de patins qui sont en appui glissant le long de parois opposées de ladite cavité. L'auto-centrage de l'élément mâle dans l'élément femelle, lors de l'action d'accouplement, se fait en conséquence par glissement du socle sur le bloc de support.According to a first embodiment, the base supporting the male element is provided on the side opposite to the male element with a cavity having the shape of a parallelepiped. The bottom of this cavity defines a sliding plane perpendicular to the connecting axis, which is supported and can slide on a support block secured to the structure receiving the pocket. This block is crossed by two sets of rods superimposed on a cross and sliding in the block. The ends of these rods are provided with pads which are in sliding support along opposite walls of said cavity. The self-centering of the male element in the female element, during the coupling action, is done accordingly by sliding the base on the support block.

Au moins une tige de chaque jeu de tiges est entourée de deux ressorts montés entre les patins extérieurs et le bloc de support, pour assurer une position centrale du socle par rapport au bloc de support.At least one rod of each set of rods is surrounded by two springs mounted between the outer pads and the support block, to ensure a central position of the base relative to the support block.

Selon un deuxième mode de réalisation le socle est monté dans un logement dans lequel il est coulissable dans une première direction définie par des tiges de guidage qui le traversent et qui sont fixées dans le logement. Ce logement est coulissable suivant une deuxième direction dans un châssis solidaire de la structure recevant la poche. Ladite deuxième direction est perpendiculaire à ladite première direction et est définie par des tiges de guidage fixées dans le châssis. Le socle et son logement sont préférentiellement maintenus dans une position centrale par rapport au châssis sous l'action de ressorts montés entre le socle et son logement d'une part, et entre le logement et le châssis d'autre part.According to a second embodiment, the base is mounted in a housing in which it can be slid in a first direction defined by guide rods which pass through it and which are fixed in the housing. This housing is slidable in a second direction in a frame secured to the structure receiving the pocket. Said second direction is perpendicular to said first direction and is defined by guide rods fixed in the chassis. The base and its housing are preferably maintained in a central position relative to the chassis under the action of springs mounted between the base and its housing on the one hand, and between the housing and the chassis on the other hand.

D'autres particularités et caractéristiques ressortiront de la description détaillée de deux modes de réalisation préférés, présentés ci-dessous à titre d'illustration, en référence aux dessins annexés, dans lesquels:

  • - la Figure 1 présente une vue, partiellement en coupe verticale, d'un premier mode de réalisation d'un dispositif d'accouplement;
  • - la Figure 2 montre une vue partielle en plan de l'agencement de ce dispositif sur une poche de coulée;
  • - la Figure 3 représente une vue, partiellement en coupe verticale, d'un second mode de réalisation; et
  • - la Figure 4 montre une vue partiellement en plan et partiellement en coupe horizontale du mode de réalisation de la Figure 3.
Other particularities and characteristics will emerge from the detailed description of two preferred embodiments, presented below by way of illustration, with reference to the appended drawings, in which:
  • - Figure 1 shows a view, partially in vertical section, of a first embodiment of a coupling device;
  • - Figure 2 shows a partial plan view of the arrangement of this device on a ladle;
  • - Figure 3 shows a view, partially in vertical section, of a second embodiment; and
  • - Figure 4 shows a partially plan view and partially in horizontal section of the embodiment of Figure 3.

La Figure 1 montre un élément de raccordement femelle monté de façon téléscopique dans un pied 12, qui est fixé à son tour sur la partie inférieure de la paroi extérieure d'une poche métallurgique 14 comme représentée sur la Figure 2. L'élément 10 peut être enfoncé d'une certaine distance dans le pied 12 contre l'action d'un ressort hélicoïdal 16 disposé autour du corps 18 de l'élément 10 et prenant appui respectivement sur un épaulement intérieur du pied 12 et un épaulement extérieur du corps 18. L'élément 10 est traverse axialement par un passage 20 qui communique avec une conduite extérieure 22, reliant le pied 12 à la partie creuse du fond de la poche 14. La partie inférieure de l'élément de raccordement 10 comporte une cuvette 24 de forme généralement conique, ouverte vers le bas et dont le fond est arrondi.Figure 1 shows a female connection element telescopically mounted in a foot 12, which is in turn fixed to the lower part of the outer wall of a metallurgical ladle 14 as shown in Figure 2. Element 10 can be pressed a certain distance into the foot 12 against the action of a helical spring 16 disposed around the body 18 of the element 10 and bearing respectively on an internal shoulder of the foot 12 and an external shoulder of the body 18. The element 10 is traversed axially by a passage 20 which communicates with an external pipe 22, connecting the foot 12 to the hollow part of the bottom of the pocket 14. The lower part of the connection element 10 comprises a bowl 24 of shape generally conical, open at the bottom and with a rounded bottom.

Cette cuvette 24 sert à recevoir une tête de raccordement mâle 26 également de forme conique, mais à plus forte inclinaison que la conicité de la cuvette 24. Cette tête de raccordement 26 comporte un sommet arrondi conforme à la courbure du fond de la cuvette 24 de manière à épouser la forme de celle-ci. Un joint torique 28 prévu sur le sommet 26a de la tête 26 assure l'étanchéité lorsque les éléments sont accouplés comme représenté sur la figure 1.This bowl 24 is used to receive a male connection head 26 also of conical shape, but at a greater inclination than the conicity of the bowl 24. This connection head 26 has a rounded top conforming to the curvature of the bottom of the bowl 24 of so as to follow the shape of it. An O-ring 28 provided on the top 26a of the head 26 seals when the elements are coupled as shown in FIG. 1.

La tête 26 est montée sur un socle 30 qui est porté par le fond 32 du support de la poche 14. Selon l'une des particularités du dispositif proposé le socle 30 possède deux degrés de liberté horizontaux par rapport au support 32.The head 26 is mounted on a base 30 which is carried by the bottom 32 of the support for the bag 14. According to one of the features of the device proposed, the base 30 has two horizontal degrees of freedom relative to the support 32.

Dans le premier mode de réalisation selon la figure 1, le socle 30 comporte, à cet effet, une cavité inférieure 34 à fond ouvert, de section rectangulaire ou carrée et à parois intérieures verticales. Le socle 30 est engagé par cette cavité 34 sur un bloc de support 36, solidaire du fond 32 du support. La surface supérieure de ce bloc 36 est, de préférence, pourvu d'une couche supérieure de glissement 38 qui porte le socle 30 tout en permettant un glissement relativement facile de celui-ci sur le bloc 36.In the first embodiment according to FIG. 1, the base 30 comprises, for this purpose, a lower cavity 34 with an open bottom, of rectangular or square section and with vertical internal walls. The base 30 is engaged by this cavity 34 on a support block 36, integral with the bottom 32 of the support. The upper surface of this block 36 is preferably provided with an upper sliding layer 38 which carries the base 30 while allowing relatively easy sliding thereof on the block 36.

Pour assurer la stabilité nécessaire au socle 30, il est prévu dans sa cavité 34 un système de guidage qui le maintient par rapport au bloc de support 36. Un premier jeu de tiges 40 est logé de manière coulissante dans le bloc 36 et comporte à ses extrémités opposées deux patins 42, 44 glissant sur les parois verticales opposées du socle 30. Les plots 46 et 48 jouent le rôle de butée, empêchant le soulèvement intempestif du socle 30. Ce socle peut coulisser dans le sens perpendiculaire au plan de la figure 1 par mouvements relatifs entre les patins 42, 44 et des surfaces de guidage 46, 48 du socle.To provide the necessary stability to the base 30, there is provided in its cavity 34 a guide system which maintains it relative to the support block 36. A first set of rods 40 is slidably housed in the block 36 and comprises at its opposite ends two pads 42, 44 sliding on the opposite vertical walls of the base 30. The studs 46 and 48 act as a stop, preventing the inadvertent lifting of the base 30. This base can slide in the direction perpendicular to the plane of FIG. 1 by relative movements between the pads 42, 44 and guide surfaces 46, 48 of the base.

Un second jeu de tiges 50 est disposé perpendiculairement au jeu de tiges 40 dans le bloc 36 et comporte également, comme celles-ci, des patins non-représentés, prenant appui sur les parois verticales non-visibles sur la figure du socle 30. Les patins de ces tiges permettent un déplacement du socle 30 vers la gauche et la droite sur la figure 1 par coulissement des tiges 40 dans le bloc de support 36.A second set of rods 50 is arranged perpendicular to the set of rods 40 in the block 36 and also includes, like these, pads not shown, bearing on the vertical walls not visible in the figure of the base 30. The pads of these rods allow a displacement of the base 30 to the left and the right in the figure 1 by sliding the rods 40 in the support block 36.

Pour assurer une position centrale du socle 30 au moins une tige de chaque jeu de tiges 40 et 50 est entourée de deux ressorts hélicoïdaux 52, 54 prenant respectivement appui sur le bloc 36 et chacun des deux patins extérieurs 42, 44. Autrement dit, le glissement du socle 30 dans le plan de la figure 1 est réalisé contre l'action d'un des ressorts 52, 54 tandis que le glissement dans la direction perpendiculaire au plan de la figure 1 est réalisé contre l'action des ressorts du jeu de tiges 50.To ensure a central position of the base 30 at least one rod of each set of rods 40 and 50 is surrounded by two helical springs 52, 54 bearing respectively on the block 36 and each of the two outer pads 42, 44. In other words, the sliding of the base 30 in the plane of Figure 1 is made against the action of one of the springs 52, 54 while the sliding in the direction perpendicular to the plane of Figure 1 is made against the action of the springs of the set of rods 50.

La combinaison de ces deux possibilités de mouvement permet au socle 30 d'occuper n'importe quelle position dans un quadrilatère dont la surface est définie par l'amplitude de liberté de mouvement. La figure 2 illustre schématiquement ces degrés de liberté par des flèches définissant un rectangle de liberté de mouvement dont les côtés sont 50 sur 100 mm.The combination of these two possibilities of movement allows the base 30 to occupy any position in a quadrilateral whose surface is defined by the amplitude of freedom of movement. FIG. 2 schematically illustrates these degrees of freedom by arrows defining a rectangle of freedom of movement whose sides are 50 by 100 mm.

Le socle 30 comporte, en outre, une canalisation interne 56 pour l'admission des gaz de traitement du métal liquide contenu dans la poche 14 et qui est raccordée à une conduite articulée ou flexible 59 du réseau de distribution de gaz. Dans le mode de réalisation représenté cette conduite 59 comporte des raccords tournants 61 pour permettre les déplacements du socle 30 sur le fond 32 du support de la pocheThe base 30 further comprises an internal pipe 56 for the admission of the gases for processing the liquid metal contained in the pocket 14 and which is connected to an articulated or flexible pipe 59 of the gas distribution network. In the embodiment shown, this pipe 59 has rotary connectors 61 to allow the base 30 to move on the bottom 32 of the bag support.

Le canal 56 débouche dans une chambre 58 prévue dans la partie supérieure du socle 30 et dans l'intérieur de la tête de raccordement 26 et qui est prolongée par un passage axial 60 vers le sommet 26a de cette tête. Dans cette chambre 58 se trouve une soupape automatique pour couper ou établir automatiquement la communication avec la conduite 59 du réseau de gaz. Cette soupape est constituée d'un piston 62 coulissant axialement dans un manchon de guidage 64 qui est entouré d'un ressort 66. Ce ressort 66 applique le piston 62, qui est pourvu d'un joint torique 68, contre un épaulement défini entre la chambre 58 et le passage 60 pour fermer la soupape. L'ouverture de la soupape, contre l'action du ressort 66 est réalisée à l'aide d'un plongeur 70 disposé dans le passage 60 et reposant librement sur le piston 62. Le plongeur 70 possède une section appropriée afin de ne pas obturer le passage du gaz, par exemple une section en forme de croix comme représenté en médaillon. La longueur du plongeur 70 est légèrement supérieure à celle du passage 60 afin que son extrémité supérieure dépasse le sommet de la tête 26 lorsque la vanne est fermée et qu'il puisse être enfoncé par la mise en place de l'élément de raccordement femelle 10 pour ouvrir cette soupape comme représentée sur la figure 1.The channel 56 opens into a chamber 58 provided in the upper part of the base 30 and in the interior of the connection head 26 and which is extended by an axial passage 60 towards the top 26a of this head. In this chamber 58 there is an automatic valve for automatically cutting or establishing communication with the pipe 59 of the gas network. This valve consists of a piston 62 sliding axially in a guide sleeve 64 which is surrounded by a spring 66. This spring 66 applies the piston 62, which is provided with an O-ring 68, against a shoulder defined between the chamber 58 and passage 60 to close the valve. The opening of the valve, against the action of the spring 66 is carried out using a plunger 70 disposed in the passage 60 and resting freely on the piston 62. The plunger 70 has an appropriate section so as not to block. the passage of gas, for example a cross-shaped section as shown in a medallion. The length of the plunger 70 is slightly greater than that of the passage 60 so that its upper end exceeds the top of the head 26 when the valve is closed and that it can be depressed by the installation of the female connection element 10 to open this valve as shown in Figure 1.

Le dispositif proposé utilise le mouvement de la poche pour réaliser automatiquement le raccordement au réseau de gaz. La descente du pied 12 en direction du socle 30 assure, à partir de la pénétration de la tête 26 dans la cuvette 24 un auto-centrage de ces éléments de raccordement par glissement du socle 30 sur son support. Les courbures complémentaires du sommet 26a de la tête 26 et du fond de la cuvette 24 permettent, en outre, de compenser les petits défauts d'alignement. Avant d'atteindre la position d'accouplement représentée sur la figure 1, la soupape automatique est ouverte par enfoncement du plongeur 70 dès que celui-ci est actionné par le fond de la cuvette 24. Le raccordement se termine finalement par une légère pénétration de l'élément de raccordement femelle 10 dans le pied 12 contre l'action du ressort 16.The proposed device uses the movement of the bag to automatically connect to the gas network. The descent of the foot 12 in the direction of the base 30 ensures, from the penetration of the head 26 in the bowl 24, a self-centering of these connection elements by sliding of the base 30 on its support. The complementary curvatures of the top 26a of the head 26 and of the bottom of the bowl 24 also make it possible to compensate for small misalignments. Before reaching the coupling position shown in FIG. 1, the automatic valve is opened by depressing the plunger 70 as soon as the latter is actuated by the bottom of the bowl 24. The connection finally ends with a slight penetration of the female connection element 10 in the foot 12 against the action of the spring 16.

De manière analogue, lorsque la poche 14 est sortie de son support, le dégagement de l'élément 24 de la tête 26 libère le piston 62 et l'expose à l'action de son ressort 66 pour fermer la vanne et couper automatiquement la communication avec le réseau de gaz.Similarly, when the pocket 14 is removed from its support, the release of the element 24 from the head 26 releases the piston 62 and exposes it to the action of its spring 66 to close the valve and cut off communication automatically with the gas network.

Dans le mode de réalisation représenté par les figures 3 et 4, les éléments d'accouplement sont les mêmes que ceux du mode de réalisation de la figure 1, à l'exception du fait que le ressort hélicoïdal 16 a été remplacé par un ressort à disques 80 et que le piston 62 à tête platte de la soupape automatique a été remplacé par un piston conique 82. Ce qui diffère dans le mode de réalisation des figures 3 et 4 est le montage du socle 84 de l'élément de raccordement mâle 26 afin d'assurer deux degrés de liberté par rapport au support. A cet effet, le socle 84 est porté par deux tiges 86, 88 qui le traversent et qui sont solidaires d'un logement 92 entourant le socle 84. Ce socle peut coulisser axialement sur ces tiges 86, 88 grâce à la présence de douilles à billes 90 autour de chacune de ces tiges 86, 88. La position centrale du socle 84 dans le logement 92 est assurée par des ressorts 94, 96 disposés de part et d'autre du socle 84 et prenant appui sur le logement 92.In the embodiment shown in Figures 3 and 4, the coupling elements are the same as those in the embodiment of Figure 1, except that the coil spring 16 has been replaced by a spring discs 80 and that the flat-head piston 62 of the automatic valve has been replaced by a conical piston 82. What differs in the embodiment of FIGS. 3 and 4 is the mounting of the base 84 of the male connection element 26 to ensure two degrees of freedom from the support. For this purpose, the base 84 is carried by two rods 86, 88 which pass through it and which are integral with a housing 92 surrounding the base 84. This base can slide axially on these rods 86, 88 thanks to the presence of sockets balls 90 around each of these rods 86, 88. The central position of the base 84 in the housing 92 is ensured by springs 94, 96 arranged on either side of the base 84 and bearing on the housing 92.

L'ensemble formé par le socle 84 et le logement 92 est porté, à son tour, par deux tiges superposées 98, 100 traversant cet ensemble et qui sont solidaires d'un châssis 102 fixé sur le plancher du support de la poche. Ce glissement du socle 84 et du logement 92 vers la gauche et vers la droite sur la figure 3 est facilité par des douilles à billes 104, prévus autour des tiges 98 et 100 au niveau du passage à travers le logement 92. La position centrale du logement 92 par rapport au châssis 102 est assurée par des ressorts 106 prévus au moins sur l'une des tiges 98 ou 100 de part et d'autre du logement 92 et prenant appui sur le châssis 102. Le dispositif de montage selon les figures 3 et 4 permet, par conséquent, au socle 84 de glisser dans deux directions perpendiculaires comme dans le mode de réalisation des figures 1 et 2, c'est-à-dire dans une première direction par rapport à son logement 92 et dans une direction perpendiculaire à celle-ci avec son logement par rapport au châssis 102.The assembly formed by the base 84 and the housing 92 is carried, in turn, by two superimposed rods 98, 100 passing through this assembly and which are integral with a frame 102 fixed on the floor of the pocket support. This sliding of the base 84 and of the housing 92 to the left and to the right in FIG. 3 is facilitated by ball bushings 104, provided around the rods 98 and 100 at the level of the passage through the housing 92. The central position of the housing 92 compared to chassis 102 is provided by springs 106 provided at least on one of the rods 98 or 100 on either side of the housing 92 and bearing on the chassis 102. The mounting device according to FIGS. 3 and 4 allows, by Consequently, the base 84 to slide in two perpendicular directions as in the embodiment of Figures 1 and 2, that is to say in a first direction relative to its housing 92 and in a direction perpendicular thereto with its housing relative to the chassis 102.

Claims (10)

1. Device for automatically connecting a metallurgical ladle to a gas supply, the said ladle being placed for this purpose by an insertion movement in a reception structure, and the said device comprising a male connection member which can be engaged axially in a female connection member so as to establish communication between the gas supply and a pipe which is solidly attached to the ladle, characterized
- by a base (30, 84) which is carried by the reception structure so as to have two degrees of freedom in a plane perpendicular to the said insertion movement, the said base being provided with the male connection member (26) passed through by an axial passage (60) communicating with the gas supply (59);
- by a foot (12) solidly attached to the ladle (14) and provided with the female connection member (10) passed through axially by a passage (20) joined to the said pipe (22) which is solidly attached to the ladle;
- the said male connection head (26) and the said female connection member (10) having a position and an orientation which are defined so that the female connection member (10) can engage axially on the male connection member (26) by the single movement of introducing the ladle into the said structure.
2. Device according to Claim 1, characterized in that the base (30, 84) is carried via the said reception structure so as to be able to slide in two mutually perpendicular directions against the action of springs (52, 54), (94, 96, 106).
3. Device according to Claim 1 or 2, characterized in that the female connection member (10) is mounted in the foot (12) to be vertically slidable therein against the action of a spring (16, 80) provided inside the foot (12).
4. Device according to any one of Claims 1 to 3, characterized in that the male connection member has the form of a cone having a rounded vertex (26a), and in that the female member (10) has the shape of a conical bowl (24) which is engageable on this cone and the bottom of which is rounded to match the curvature of the vertex (26a) of the male connection member (26).
5. Device according to Claim 4, characterized in that the vertex (26a) of the male member (26) is provided with an O-ring seal (28).
6. Device according to Claim 4 or 5, characterized in that the male connection member (26) includes an axial passage communicating with the said gas distribution system (59) and emerging axially from the male member (26) at its vertex (26a), a valve mounted in this passage so as to cut the communication with the gas supply (59) under the action of a spring (66), a plunger (70) which can slide axially in this passage so as to open the said valve against the action of its spring (66) by axially penetrating into the male member (26), the said plunger emerging with one end out of the vertex (26a) so that the penetration into the male member (26) takes place by axial engagement of the female member (10) onto the male member (26).
7. Device according to any one of Claims 1 to 6, characterized in that the base (30) is provided, on the side opposite the male member (26) with a cavity (34) of parallelepipedal shape, in that the bottom of this cavity (34) defines a plane surface perpendicular to the connection axis, and in that the base (30) bears slidingly with this plane surface on a support block (36) solidly attached to the structure receiving the ladle, and in that this block (36) is passed through by two sets of crossed superposed rods (40, 50), the said rods being capable of sliding in the block (36) and their ends being provided with shoes (42, 44) bearing and sliding over the opposite side walls of the said cavity (34).
8. Device according to Claim 7, characterized in that at least one rod of each set of rods (40, 50) is surrounded by two springs (52, 54) mounted between the outer shoes (42, 44) and the block (36), in order to ensure central positioning of the base (30) centrally with respect to the block (36).
9. Device according to any one of Claims 1 to 6, characterized in that the base (84) is mounted in a seat (92) in which it can slide in a first direction defined by guide rods (86, 88) which pass through it and which are fixed in the seat (92), and in that the seat (92) can slide in a frame (102), solidly attached to the structure receiving the ladle, in a second direction perpendicular to the said first direction, the said second direction being defined by guide rods (98, 100) fixed in the frame (102).
10. Device according to Claim 9, characterized in that the base and its seat (92) are held in a central position relative to the frame (102) through the action of springs (94, 96, 106) mounted between the base (84) and its seat (92), on the one hand, and between the seat (92) and the frame (102) on the other hand.
EP88120707A 1987-12-18 1988-12-12 Device for coupling a metallurgical ladle to the gas supply Expired - Lifetime EP0320841B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88120707T ATE102259T1 (en) 1987-12-18 1988-12-12 DEVICE FOR COUPLING A METALLURGICAL LADLE TO THE GAS SUPPLY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87082A LU87082A1 (en) 1987-12-18 1987-12-18 DEVICE FOR COUPLING A METALLURGICAL POCKET TO A GAS NETWORK
LU87082 1987-12-18

Publications (4)

Publication Number Publication Date
EP0320841A2 EP0320841A2 (en) 1989-06-21
EP0320841A3 EP0320841A3 (en) 1990-02-28
EP0320841B1 true EP0320841B1 (en) 1994-03-02
EP0320841B2 EP0320841B2 (en) 1998-03-11

Family

ID=19730999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120707A Expired - Lifetime EP0320841B2 (en) 1987-12-18 1988-12-12 Device for coupling a metallurgical ladle to the gas supply

Country Status (10)

Country Link
US (1) US4883259A (en)
EP (1) EP0320841B2 (en)
AT (1) ATE102259T1 (en)
AU (1) AU611238B2 (en)
BR (1) BR8806756A (en)
CA (1) CA1317105C (en)
DE (1) DE3888121T3 (en)
ES (1) ES2050147T5 (en)
LU (1) LU87082A1 (en)
ZA (1) ZA889418B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065986A (en) * 1990-07-30 1991-11-19 Insul Company, Inc. Automatic gas hookup to a ladle
LU88014A1 (en) * 1991-10-09 1993-05-17 Wurth Paul Sa Automatic coupling device between pipes on a treatment station and a metallurgical ladle
FR2694511A1 (en) * 1992-08-05 1994-02-11 Lorraine Laminage Automatic coupling device for fixed feed circuit - for connection to a gaseous fluid circuit on a liquid metal ladle
LU88457A1 (en) * 1994-02-02 1995-09-01 Wurth Paul Sa Device for coupling a metallurgical carriage to a flexible pipe
LU88594A1 (en) * 1995-03-03 1996-10-04 Wurth Paul Sa Device for automatically coupling a ladle to one or more gas lines
LU90181B1 (en) * 1997-12-04 1999-06-07 Wurth Paul Sa Coupling device
DE102004027531B3 (en) * 2004-06-02 2005-06-09 Mannesmannröhren-Werke Ag Coupling for metallurgical vessel, especially a steel casting ladle useful for connecting a metallurgical ladle to a gas scavenging line includes a pan-shaped first and second coupling part with two gas inlet channels and gas exit channels
KR101060726B1 (en) 2009-12-17 2011-08-30 (주)인영 Auto Coupler Connection Structure for Ladle
CN111288242A (en) * 2020-03-30 2020-06-16 无锡巨力重工股份有限公司 Connecting structure of automatic male connector and bearing tank seat

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275557B (en) * 1959-11-25 1968-08-22 Salzgitter Huettenwerk Ag Device for inflating or blowing in gases, primarily oxygen, as well as gas-solid mixtures on or in metal, especially iron, baths
AT339356B (en) * 1975-02-25 1977-10-10 Voest Ag DEVICE FOR REELING STEEL
DE2831647C2 (en) * 1978-07-19 1980-02-21 Mannesmann Demag Ag, 4100 Duisburg Coupling for connecting supply gas lines to metallurgical vessels
US4502670A (en) * 1984-02-02 1985-03-05 Allied Corporation Gas hook-up to a ladle

Also Published As

Publication number Publication date
DE3888121T3 (en) 1998-07-23
ES2050147T3 (en) 1994-05-16
AU611238B2 (en) 1991-06-06
US4883259A (en) 1989-11-28
BR8806756A (en) 1989-08-29
DE3888121D1 (en) 1994-04-07
EP0320841B2 (en) 1998-03-11
LU87082A1 (en) 1989-07-07
CA1317105C (en) 1993-05-04
ES2050147T5 (en) 1998-06-16
ATE102259T1 (en) 1994-03-15
EP0320841A2 (en) 1989-06-21
AU2706388A (en) 1989-06-22
DE3888121T2 (en) 1994-06-09
EP0320841A3 (en) 1990-02-28
ZA889418B (en) 1989-10-25

Similar Documents

Publication Publication Date Title
EP1123780B1 (en) Orientatable vacuum gripping device for the transport or working of an irregularly shaped workpiece
EP0320841B1 (en) Device for coupling a metallurgical ladle to the gas supply
WO2003010439A1 (en) Device for locking two telescopic elongated elements
FR2857400A1 (en) Airplane structures panels connecting lock, has compression link with locking pin contacting with hook surface, situated in front of operating unit, during opening of lock
FR2752712A1 (en) INFUSION APPARATUS
FR2736757A1 (en) ELECTRICAL CONNECTOR WITH AUTOMATIC DISPLAY
CA2743091A1 (en) Casting pipe, device for handling said pipe and valve driving device
FR2506195A1 (en) Articulated mounting pick=up head on assembly tool - uses pair of segmental roller joints or ball joint with fluid entering slip plane on signal
EP2516778B1 (en) Shutter device and corresponding assembly
EP1153563A1 (en) Household appliance for preparing food comprising a locking device with clamps for a lid on a container
CA1087871A (en) Handling apparatus for use in combination with a pressurized fluid sampler cell
FR2655282A1 (en) DEVICE FOR CONNECTING A CASTING TUBE TO THE CASTING NOZZLE OF A CONTAINER CONTAINING MOLTEN METAL.
FR2646654A3 (en) Pumping mechanism intended for distributing lotion from a bottle/container
FR2641266A1 (en) Device for setting posts, pillars or the like vertically straight
EP4563872A1 (en) Tank for storing a liquefied fluid, adjustment device, installation and method for assembling such a tank
FR3123408A1 (en) Extended part support device of complex shape
FR2713335A1 (en) Level detector.
FR2843952A1 (en) Load handling yoke has stop foot to position yoke for reloading when emptied
FR2740992A1 (en) VACUUM CHAMBER
EP0666324B1 (en) Installation for coupling a movable metallurgical vessel to a flexible gas conduit
FR2587645A1 (en) Sectioner for tubes
FR2583728A1 (en) Apparatus for loading bags and bulk materials onto ships
FR2556066A1 (en) Mechanical connection device
FR2471826A1 (en) SHELL MOLDING MACHINE WITH LOW DROP DOWN LATCH HITCH
WO2001079566A1 (en) Connection device for connecting a metallurgical ladle to a supply system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19900601

17Q First examination report despatched

Effective date: 19920605

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 102259

Country of ref document: AT

Date of ref document: 19940315

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940228

REF Corresponds to:

Ref document number: 3888121

Country of ref document: DE

Date of ref document: 19940407

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2050147

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH

Effective date: 19941123

EAL Se: european patent in force in sweden

Ref document number: 88120707.0

NLR1 Nl: opposition has been filed with the epo

Opponent name: VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH.

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19980311

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: MAINTIEN DU BREVET DONT L'ETENDUE A ETE MODIFIEE

NLR2 Nl: decision of opposition
ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Kind code of ref document: T5

Effective date: 19980511

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20011127

Year of fee payment: 14

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20031118

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20031219

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050701

EUG Se: european patent has lapsed
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051212

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20051226

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20071121

Year of fee payment: 20

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20061213

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20071119

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061213

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20071115

Year of fee payment: 20

Ref country code: GB

Payment date: 20071115

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20071115

Year of fee payment: 20

BE20 Be: patent expired

Owner name: S.A. PAUL *WURTH

Effective date: 20081212

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20081211

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20081211

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20071219

Year of fee payment: 20

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20091201