EP0469268B2 - Connection between the outlet of a metallurgical vessel and a protective tube or immersion nozzle - Google Patents
Connection between the outlet of a metallurgical vessel and a protective tube or immersion nozzle Download PDFInfo
- Publication number
- EP0469268B2 EP0469268B2 EP91109446A EP91109446A EP0469268B2 EP 0469268 B2 EP0469268 B2 EP 0469268B2 EP 91109446 A EP91109446 A EP 91109446A EP 91109446 A EP91109446 A EP 91109446A EP 0469268 B2 EP0469268 B2 EP 0469268B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- protective tube
- immersion nozzle
- outlet
- annular space
- 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
Links
- 238000007654 immersion Methods 0.000 title claims abstract description 39
- 230000001681 protective effect Effects 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000011261 inert gas Substances 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000011449 brick Substances 0.000 claims 3
- 239000004575 stone Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000002657 fibrous material Substances 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/502—Connection arrangements; Sealing means therefor
Definitions
- the invention relates to a connection between the outlet stone a metallurgical vessel and an adjoining one Protection tube or immersion spout.
- From DE-B-3 226 047 (corresponding to US Re-33 036) is a tapered fit between a pouring stone and one Immersion spout provided. Although there can also be a Inert gas in a provided in the area of the conical seat Annulus are introduced. The desired gas tightness is however not guaranteed. Even smaller particles in the Fitting fits significantly affect gas tightness. In addition, the fit means that the protective tube or Immersion spout sticks when removing from the outlet cone and at greater force breaks.
- Fig. 3 is a connection between the outlet stone metallurgical vessel and a protective tube excluding it known or immersion spout, which with a a conical seat provided with a seal connected to each other are, in which over an annulus and open Grooves a protective gas to equalize pressure in the pouring tube to be introduced. With reasonable amounts of shielding gas however, this is not possible, so that a seal against Air access to the jet is not reached.
- DE-B-3 620 413 is used as a joint material for pouring closures and gas inlets on metallurgical vessels Expanded fiber mushroom proposed.
- the object of the invention is to connect the the type mentioned at the beginning to seal against air ingress into the protective tube or immersion spout simplify and improve as well as tightness monitoring to reach. According to the invention, this task is for a connection of the type mentioned at the beginning with the characteristics as of claim 1 solved. (Continued with column 1, line 35 of EP 0 469 268 B1)
- the sealing rings ensure the necessary tightness of the Fit even when between the spout and the protective tube or immersion spout.
- In cooperation with the prevailing gas pressure of the inert gas in the annulus Seals ensure that the leaking molten metal is not included Air comes into contact and therefore does not oxidize.
- the gas pressure in the annulus is determined by the Display device monitors. If either the upper sealing ring or if the lower sealing ring should leak, one is carried out Display. As long as only one of the sealing rings leaks, there is not yet the danger that the molten metal with air in Touch comes. An advertisement is therefore made before one Condition in which both sealing rings are leaking and therefore Atmospheric oxygen from the leaking melt through the seat is sucked in.
- the compressible sealing rings preferably consist of ceramic fiber material. They are particularly by the Spacers bridging the annular space are connected to one another. This makes it possible to assemble both rings as a structural unit. This can be done before attaching the protective tube or Immersion spout on the outlet on this or on the protective tube or the immersion nozzle. In the design of the Invention forms a one-piece ring member both rings and if necessary, the spacers.
- the two sealing rings can be attached to the protective tube or immersion spout on the outlet on this or on the Protective tube or the immersion spout must be attached.
- the lower sealing ring is preferably located at a step of the Protective tube or immersion spout. It is the one correct position of the sealing rings during assembly to reach.
- the sealing rings have a certain one Gas permeability. Because of the prevailing in the annulus However, excess gas pressure of the inert gas does not lead to the fact that Air is sucked in by the melt. In the design of the Invention arises from a different gas permeability a directional gas flow for the compressible sealing rings, preferably in the protective tube or immersion nozzle.
- the Sealing rings (5, 6) are compressible and consist of ceramic Fiber material.
- a radial channel (9) opens into the annular space (7) Immersion spout (3).
- the two sealing rings (5, 6) are over spacers (12) connected with each other. These extend through the annulus (7) without locking it off.
- the two sealing rings (5, 6) and the spacers (12) are made as a one-piece component from the ceramic fiber material.
- the lower sealing ring (6) sits on a step formed in the immersion nozzle (3) (13).
- the assembly of the immersion nozzle (3) on the outlet stone (2) is done approximately as follows: The assembly consisting of the upper and lower sealing ring (5, 6) and the spacers (12) is pushed into the immersion nozzle (3) until the lower sealing ring (6) stands on the step (13). The spacer webs (12) then lie in the area of the step (8) widening the annular space (7).
- the immersion nozzle (3) is placed on the outlet stone (2) pushed and in this position in a manner known per se attached.
- the fiber material of the sealing rings (5, 6) is thereby compressed.
- the gas line (10) can be connected.
- the annular space (7) is operated with inert gas acted upon.
- the gas permeability of the Sealing rings (5, 6) the pressing of the sealing rings (5, 6) and the one prevailing when pouring in the immersion nozzle (3)
- Negative pressure arises on the display device (11) formed by a pressure gauge is a certain overpressure.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
- Furnace Charging Or Discharging (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Sealing Devices (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Cable Accessories (AREA)
- Measuring Fluid Pressure (AREA)
- Discharge Heating (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Verbindung zwischen dem Auslaufstein eines metallurgischen Gefäßes und einem daran anschließenden Schutzrohr oder Eintauchausguß.The invention relates to a connection between the outlet stone a metallurgical vessel and an adjoining one Protection tube or immersion spout.
Eine derartige Verbindung ist aus der EP-A-0 072 041 bekannt. Bei dieser verhältnismäßig aufwendigen Konstruktion befinden sich die Dichtringe zwischen einem gesonderten Hülsenkörper für die Gaszufuhr und zwei Stützringen für den Ausgußstein und den Eintauchausguß. In dem stufenförmigen Sitz zwischen Ausgußstein und Eintauchausguß befindet sich keine Dichtung. Auch ist der Luftzutritt zu diesem Sitz nicht zuverlässig verhindert. Hierbei wird zwar der flüssige Stahl beim Guß mit Hilfe des Eintauchausgusses gegen freien Luftzutritt geschützt, durch während des Gießens entstehenden Unterdruck in dem Eintauchausguß wird jedoch Luft in den Spalt zwischen Ausgußstein und Eintauchausguß gesaugt. Nachteilige Oxidation und Aufstickung des Stahls sind die Folge.Such a connection is known from EP-A-0 072 041. In this relatively complex construction the sealing rings between a separate sleeve body for the gas supply and two support rings for the pouring stone and the immersion nozzle. In the stepped seat between No pouring stone and immersion nozzle. Air access to this seat is also not reliable prevented. Here, the liquid steel is included in the casting Protected by the immersion spout against free air access, due to negative pressure created during casting however, the immersion nozzle will have air in the gap between Pouring stone and immersion spout sucked. Adverse oxidation and steel embroidery is the result.
Bei der Ausgußanordnung nach der DE-A-3 612 403 sind ebenfalls Dichtungen lediglich zwischen dem unteren Rand einer oberen Stahlglocke und dem oberen Rand einer unteren Stahlglocke einerseits sowie zwischen dem unteren Rand der unteren Stahlglocke und einem Lagerring für den Eintauchausguß andererseits vorgesehen. Der Auslaufstein sitzt stirnseitig über einen Auslaufsteinhalter mit einer verhältnismäßig kurzen Ringfläche auf dem Eintauchausguß. Eine hinreichende Abdichtung gegen Lufteintritt, beispielsweise in den Ringspalt zwischen Auslaufstein und einer Schieberverbindungsabstützung, ist nicht vorgesehen. Infolgedessen kann ein Luftzutritt nicht wirksam verhindert werden und die Messung des Druckes in dem von den Stahlglocken umgebenen Ringraum gibt keinen Aufschluß über die Zuverlässigkeit des Systems. Darüber hinaus ist diese bekannte Ausgußanordnung aufgrund der Notwendigkeit vieler Teile sehr kompliziert.In the pouring arrangement according to DE-A-3 612 403 are also Seals only between the bottom of an upper one Steel bell and the top of a lower steel bell on the one hand and between the bottom of the bottom Steel bell and a bearing ring for the immersion spout otherwise provided. The outlet stone sits on the front via a discharge stone holder with a relatively short Ring surface on the immersion nozzle. Adequate sealing against air entry, for example in the annular gap between outlet stone and a slide connection support, is not scheduled. As a result, access to air cannot can be effectively prevented and the measurement of the pressure in the the annular space surrounded by the steel bells gives no information about the reliability of the system. In addition, this is known spout arrangement due to the need for many Parts very complicated.
Aus der EP-A-0 369 147 (Fig. 5) ist es bekannt, im Stoßfugenbereich zweier Gießrohrabschnitte eine zusätzliche äußere Hülse mit Spielpassung vorzusehen, in welche die Bohrung eines Fluidanschlusses führt. Im horizontalen Stoßfugenbereich zwischen den beiden Rohrabschnitten ist eine Dichtung vorgesehen. Der Spielpassungsbereich, welcher die Stoßfuge umgibt und in welchen die Bohrung mündet, ist beidseits der Einmündung mittels Federringen abgedichtet, um einem Eindringen von Luft in den Schmelzestrom vorzubeugen. Trotz der aufwendigen Konstruktion ist die Abdichtung des Ringraumes, da es an der erforderlichen Flächenpressung fehlt, problematisch. Aus der EP-A-0 369 147 (Fig. 6) ist es ferner bekannt, eine Dichtung an der Konusverbindung zwischen einer Unterplatte eines Schieberverschlusses und einem Ausgußrohr vorzusehen. Im Konusbereich ist ebenfalls ein Federring zur Abdichtung vorgesehen. Auch hier ist die Abdichtung verbesserungswürdig, weil ein Luftzutritt in des Ausgußrohr nicht verhindert ist.From EP-A-0 369 147 (Fig. 5) it is known in the butt joint area two pouring tube sections an additional outer Provide sleeve with clearance, in which the bore of a Fluid connection leads. In the horizontal butt joint area there is a seal between the two pipe sections intended. The play fit area, which is the butt joint surrounds and in which the bore opens, is on both sides of the Mouth sealed with spring washers to prevent penetration prevent air from flowing into the melt. Despite the complex construction is the sealing of the annulus, problematic because it lacks the required surface pressure. From EP-A-0 369 147 (Fig. 6) it is also known a seal on the cone connection between a lower plate a slide closure and a pouring spout to provide. There is also a spring ring in the cone area Sealing provided. Here too, the seal is in need of improvement, because there is no air in the pouring spout is prevented.
Aus der DE-B-3 226 047 (entsprechend der US-Re-33 036) ist ein konischer Paßsitz zwischen einem Ausgußstein und einem Eintauchausguß vorgesehen. Zwar kann dort ebenfalls ein Inertgas in einen im Bereich des konischen Sitzes vorgesehenen Ringraum eingeführt werden. Die gewünschte Gasdichtigkeit ist jedoch nicht zu gewährleisten. Schon kleinere Partikel im Paßsitz beeinträchtigen die Gasdichtigkeit beträchtlich. Außerdem führt der Paßsitz dazu, daß das Schutzrohr bzw. der Eintauchausguß beim Abnehmen vom Auslaufkonus klemmt und bei größerer Krafteinwirkung bricht.From DE-B-3 226 047 (corresponding to US Re-33 036) is a tapered fit between a pouring stone and one Immersion spout provided. Although there can also be a Inert gas in a provided in the area of the conical seat Annulus are introduced. The desired gas tightness is however not guaranteed. Even smaller particles in the Fitting fits significantly affect gas tightness. In addition, the fit means that the protective tube or Immersion spout sticks when removing from the outlet cone and at greater force breaks.
Aus G.J. Roberts et al.: "Refractory systems to improve concast steel quality", Metals and Materials, Mai 1985, Fig. 3 ist eine Verbindung zwischen dem Auslaufstein eines metallurgischen Gefäßes und einem deren auschließenden Schutzrohr oder Eintauchausguß bekannt, welche über einen mit eines Dichtung versehenen konischen sitz miteinander verbunden sind, bei welchem über einen Ringraum und offene Rillen ein Schutzgas zum Druckausgleich in das gießrohr eingeführt werden soll. Mit vertretbaren Schutzgasmengen ist dies jedoch nicht möglich, so daß eine Abdichtung gegen Luftzutritt zum Größstrahl nicht erreicht wird. From G.J. Roberts et al .: "Refractory systems to improve concast steel quality ", Metals and Materials, May 1985, Fig. 3 is a connection between the outlet stone metallurgical vessel and a protective tube excluding it known or immersion spout, which with a a conical seat provided with a seal connected to each other are, in which over an annulus and open Grooves a protective gas to equalize pressure in the pouring tube to be introduced. With reasonable amounts of shielding gas however, this is not possible, so that a seal against Air access to the jet is not reached.
In der DE-B-3 620 413 ist als Fugenwerkstoff für Ausgußverschlüsse und Gaseinführungen an metallurgischen Gefäßen ein Blähfaserpfilz vorgeschlagen.DE-B-3 620 413 is used as a joint material for pouring closures and gas inlets on metallurgical vessels Expanded fiber mushroom proposed.
Aufgabe der Erfindung ist es, bei einer Verbindung der der eingangs genannten Art die Abdichtung gegen Luftzutritt in das Schutzrohr bzw. den Eintauchausguß zu vereinfachen und zu verbessern sowie eine Dichtigkeitsüberwachung zu erreichen. Erfindungsgemäß ist diese Aufgabe bei einer Verbindung des eingangs genannten Art mit den Merkmalen als des Anspruchs 1 gelöst. (Fortsetzung mit Spalte 1, Zeile 35 der EP 0 469 268 B1) The object of the invention is to connect the the type mentioned at the beginning to seal against air ingress into the protective tube or immersion spout simplify and improve as well as tightness monitoring to reach. According to the invention, this task is for a connection of the type mentioned at the beginning with the characteristics as of claim 1 solved. (Continued with column 1, line 35 of EP 0 469 268 B1)
Die Dichtringe gewährleisten die notwendige Dichtigkeit des Sitzes auch dann, wenn zwischen dem Auslauf ud dem Schutzrohr bzw. Eintauchausguß Unebenheiten bestehen. Im Zusammenwirken mit dem im Ringraum herrschenden Gasdruck des Inertgases stellen die Dichtringe sicher, daß die auslaufende Metallschmelze nicht mit Luft in Berührung kommt und also nicht oxidiert.The sealing rings ensure the necessary tightness of the Fit even when between the spout and the protective tube or immersion spout. In cooperation with the prevailing gas pressure of the inert gas in the annulus Seals ensure that the leaking molten metal is not included Air comes into contact and therefore does not oxidize.
Der im Ringraum anstehende Gasdruck wird durch die Anzeigeeinrichtung überwacht. Wenn entweder der obere Dichtring oder der untere Dichtring undicht werden sollten, erfolgt eine Anzeige. Solange nur einer der Dichtringe undicht wird, besteht noch nicht die Gefahr, daß die Metallschmelze mit Luft in Berührung kommt. Eine Anzeige erfolgt also schon vor einem Zustand, in dem beide Dichtringe undicht sind und damit Luftsauerstoff von der auslaufenden Schmelze durch den Sitz angesaugt wird.The gas pressure in the annulus is determined by the Display device monitors. If either the upper sealing ring or if the lower sealing ring should leak, one is carried out Display. As long as only one of the sealing rings leaks, there is not yet the danger that the molten metal with air in Touch comes. An advertisement is therefore made before one Condition in which both sealing rings are leaking and therefore Atmospheric oxygen from the leaking melt through the seat is sucked in.
Vorzugsweise bestehen die kompressiblen Dichtringe aus keramischem Fasermaterial. Sie sind insbesondere durch den Ringraum überbrückende Distanzstege miteinander verbunden. Dadurch ist es möglich, beide Ringe als Baueinheit zu montieren. Diese können vor dem Ansetzen des Schutzrohrs bzw. Eintauchausgusses an dem Auslauf an diesem oder an dem Schutzrohr bzw. dem Eintauchausguß befestigt sein. In Ausgestaltung der Erfindung bildet ein einstückiges Ringbauteil beide Ringe und gegebenenfalls die Distanzstege.The compressible sealing rings preferably consist of ceramic fiber material. They are particularly by the Spacers bridging the annular space are connected to one another. This makes it possible to assemble both rings as a structural unit. This can be done before attaching the protective tube or Immersion spout on the outlet on this or on the protective tube or the immersion nozzle. In the design of the Invention forms a one-piece ring member both rings and if necessary, the spacers.
Die beiden Dichtringe können vor dem Ansetzen des Schutzrohres bzw. Eintauchausgusses an den Auslauf an diesem oder an dem Schutzrohr bzw. dem Eintauchausguß befestigt sein.The two sealing rings can be attached to the protective tube or immersion spout on the outlet on this or on the Protective tube or the immersion spout must be attached.
Vorzugsweise liegt der untere Dichtring an einer Stufe des Schutzrohrs bzw. Eintauchausgusses an. Es ist dadurch die richtige Lage der Dichtringe bei der Montage einfach zu erreichen.The lower sealing ring is preferably located at a step of the Protective tube or immersion spout. It is the one correct position of the sealing rings during assembly to reach.
Die Dichtringe weisen in der Praxis eine gewisse Gasdurchlässigkeit auf. Wegen des im Ringraum herrschenden Gas-Überdrucks des Inertgases führt dies jedoch nicht dazu, daß Luft von der Schmelze angesaugt wird. In Ausgestaltung der Erfindung entsteht durch eine unterschiedliche Gasdurchlässigkeit der kompressiblen Dichtringe ein gerichteter Gasstrom, vorzugsweise in das Schutzrohr bzw. den Eintauchausguß.In practice, the sealing rings have a certain one Gas permeability. Because of the prevailing in the annulus However, excess gas pressure of the inert gas does not lead to the fact that Air is sucked in by the melt. In the design of the Invention arises from a different gas permeability a directional gas flow for the compressible sealing rings, preferably in the protective tube or immersion nozzle.
Ein Ausführungsbeispiel der Erfindung ergibt sich aus der folgenden Beschreibung. In der Zeichnung zeigen:
- Figur 1
- einen Längsschnitt einer Verbindung zwischen einem Auslaufstein und einem Eintauchausguß im Längsschnitt und
Figur 2- einen Schnitt der Dichtringe längs der Linie II-II nach Figur 1.
- Figure 1
- a longitudinal section of a connection between an outlet stone and an immersion nozzle in longitudinal section and
- Figure 2
- a section of the sealing rings along the line II-II of Figure 1.
Am Boden (1) eines metallurgischen Gefäßes ist ein konischer Auslaufstein (2) befestigt. Über diesen ist ein Eintauchausguß (3) mit seinem sich entsprechend der Konizität des Auslaufsteins (2) erweiternden oberen Ende (4) geschoben.At the bottom (1) of a metallurgical vessel is a conical one Outlet stone (2) attached. Over this is an immersion spout (3) with its corresponding to the taper of the discharge stone (2) extended top end (4).
Zwischen dem Eintauchausguß (3) und dem Auslaufstein (2) sitzen ein oberer Dichtring (5) und ein unterer Dichtring (6). Die Dichtringe (5, 6) sind kompressibel und bestehen aus keramischem Fasermaterial.Sit between the immersion nozzle (3) and the outlet stone (2) an upper sealing ring (5) and a lower sealing ring (6). The Sealing rings (5, 6) are compressible and consist of ceramic Fiber material.
Zwischen den Dichtringen (5, 6) besteht ein Ringraum (7), der durch eine Stufung (8) des Eintauchausgusses (3) erweitert ist. There is an annular space (7) between the sealing rings (5, 6) is expanded by a step (8) of the immersion spout (3).
In den Ringraum (7) mündet ein radialer Kanal (9) des Eintauchausgusses (3). An diesen ist eine Gasleitung (10) für Inertgas angeschlossen. In der Gasleitung (10) liegt eine Anzeigeeinrichtung (11) für den im Ringraum (7) herrschenden Gasdruck.A radial channel (9) opens into the annular space (7) Immersion spout (3). There is a gas line (10) for this Inert gas connected. There is one in the gas line (10) Display device (11) for the prevailing in the annular space (7) Gas pressure.
Die beiden Dichtringe (5, 6) sind über Distanzstege (12) miteinander verbunden. Diese erstrecken sich durch den Ringraum (7), ohne diesen abzusperren. Die beiden Dichtringe (5, 6) und die Distanzstege (12) sind als einstückiges Bauteil aus dem keramischen Fasermaterial hergestellt. Der untere Dichtring (6) sitzt auf einer in dem Eintauchausguß (3) ausgebildeten Stufe (13) auf.The two sealing rings (5, 6) are over spacers (12) connected with each other. These extend through the annulus (7) without locking it off. The two sealing rings (5, 6) and the spacers (12) are made as a one-piece component from the ceramic fiber material. The lower sealing ring (6) sits on a step formed in the immersion nozzle (3) (13).
Die Montage des Eintauchausgusses (3) an dem Auslaufstein (2)
geschieht etwa folgendermaßen:
In den Eintauchausguß (3) wird die Baueinheit, bestehend aus
oberem und unterem Dichtring (5, 6) und den Distanzstegen (12),
eingeschoben, bis der untere Dichtring (6) auf der Stufe (13)
aufsteht. Die Distanzstege (12) liegen dann im Bereich der den
Ringraum (7) erweiternden Stufung (8).The assembly of the immersion nozzle (3) on the outlet stone (2) is done approximately as follows:
The assembly consisting of the upper and lower sealing ring (5, 6) and the spacers (12) is pushed into the immersion nozzle (3) until the lower sealing ring (6) stands on the step (13). The spacer webs (12) then lie in the area of the step (8) widening the annular space (7).
Anschließend wird der Eintauchausguß (3) auf den Auslaufstein (2) geschoben und in dieser Stellung in an sich bekannter Weise befestigt. Das Fasermaterial der Dichtringe (5, 6) wird dabei komprimiert. Danach läßt sich die Gasleitung (10) anschließen. Then the immersion nozzle (3) is placed on the outlet stone (2) pushed and in this position in a manner known per se attached. The fiber material of the sealing rings (5, 6) is thereby compressed. Then the gas line (10) can be connected.
Im Betrieb wird der Ringraum (7) mit Inertgas beaufschlagt. Je nach der Gasdurchlässigkeit der Dichtringe (5, 6), der Pressung der Dichtringe (5, 6) und dem beim Gießen im Eintauchausguß (3) herrschenden Unterdruck stellt sich an der Anzeigeeinrichtung (11), die von einem Druckmesser gebildet ist, ein bestimmter Überdruck ein.The annular space (7) is operated with inert gas acted upon. Depending on the gas permeability of the Sealing rings (5, 6), the pressing of the sealing rings (5, 6) and the one prevailing when pouring in the immersion nozzle (3) Negative pressure arises on the display device (11) formed by a pressure gauge is a certain overpressure.
Tritt am Dichtring (5) oder am Dichtinrg (6) eine Undichtigkeit auf, dann sinkt der Gasdruck ab und die Anzeigeeinrichtung (11) gibt ein Alarmsignal ab.Occurs on the sealing ring (5) or on the sealing ring (6) a leak, then the gas pressure drops and the display device (11) gives an alarm signal from.
Claims (8)
- Connection between the outlet brick (2) of a metalurgical vessel and a protective tube or an immersion nozzle (3) connected thereto, whereby the outlet brick (2) and the protective tube or the immersion nozzle (3), respectively, are connected together by means of a seat and an annular space (7) having a supply line (10) for an inert gas, the annular space (7) being arranged concentrically to the seat as well as being limited above and below by compressible, gas permeable sealing rings (5, 6), wherein the seat between the outlet brick (2) and the protective tube or the immersion nozzle (3), respectively, is conical, wherein the annular space (7) with the sealing rings (5, 6) by which it is limited is provided in the region of the conical sealing seat and wherein in the supply line (10) for the inert gas there is an indicating device (11) for a gas pressure prevailing in the annular space (7).
- Connection as claimed in Claim 1, characterised in that the compressible sealing rings (5, 6) comprise ceramic fibre material.
- Connection as claimed in Claim 1 or 2, characterized in that the upper and the lower sealing ring (5, 6) are connected together by spacer webs (12) which bridge the annular space (7).
- Connection as claimed in one of the preceding claims, characterised in that before the connection of the outlet (2) and the protective tube or the immersion nozzle (3) the compressible rings (5, 6) are secured to the outlet (2).
- Connection as claimed in one of the preceding claims 1 to 3, characterised in that before the connection of the outlet (2) and the protective tube or immersion nozzle (3) the compressible rings (5, 6) are secured in the protective tube or immersion nozzle (3).
- Connection as claimed in one of the preceding claims, characterised in that the lower sealing ring (6) engages a step (13) on the protective tube or immersion nozzle (3).
- Connection as claimed in one of the preceding claims, characterised in that a directed gas flow, preferably into the protective tube or into the immersion nozzle (3), occurs due to different gas permeability of the compressible sealing rings (5, 6).
- Connection as claimed in one of the preceding claims, characterised in that an integral annular unit affords the two sealing rings (5, 6) and optionally the spacer webs (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4024520A DE4024520A1 (en) | 1990-08-02 | 1990-08-02 | CONNECTION BETWEEN THE OUTLET OF A METALLURGICAL VESSEL AND A PROTECTIVE PIPE OR DIP SPOUT |
| DE4024520 | 1990-08-02 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0469268A2 EP0469268A2 (en) | 1992-02-05 |
| EP0469268A3 EP0469268A3 (en) | 1992-12-09 |
| EP0469268B1 EP0469268B1 (en) | 1995-04-26 |
| EP0469268B2 true EP0469268B2 (en) | 2000-05-31 |
Family
ID=6411495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91109446A Expired - Lifetime EP0469268B2 (en) | 1990-08-02 | 1991-06-08 | Connection between the outlet of a metallurgical vessel and a protective tube or immersion nozzle |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5173242A (en) |
| EP (1) | EP0469268B2 (en) |
| JP (1) | JP2961458B2 (en) |
| KR (1) | KR970001554B1 (en) |
| CN (1) | CN1025826C (en) |
| AT (1) | ATE121651T1 (en) |
| BR (1) | BR9103303A (en) |
| CA (1) | CA2047021C (en) |
| DE (2) | DE4024520A1 (en) |
| ES (1) | ES2072482T5 (en) |
| FI (1) | FI94846C (en) |
| RU (1) | RU2013732C1 (en) |
| ZA (1) | ZA914390B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4320723A1 (en) * | 1993-06-23 | 1995-01-05 | Didier Werke Ag | Immersion spout |
| DE19523715C1 (en) * | 1995-06-22 | 1996-10-10 | Mannesmann Ag | Horizontal continuous casting plant giving improved level measurement |
| US6059318A (en) * | 1996-04-30 | 2000-05-09 | E. I. Du Pont De Nemours And Company | Lateral entry remotely operated coupling system |
| FR2763012A1 (en) * | 1997-05-07 | 1998-11-13 | Vesuvius France Sa | Refractory component, e.g. casting nozzle or casting tube, for the casting of liquid steel |
| GB9914170D0 (en) * | 1999-06-18 | 1999-08-18 | Foseco Int | Continuous casting of molten metal |
| AR028542A1 (en) * | 2000-04-28 | 2003-05-14 | Vesuvius Crucible Co | REFRACTORY COMPONENT AND ASSEMBLY WITH HERMETIC OBTURATION FOR INJECTION OF AN INERT GAS |
| US6660220B2 (en) | 2001-12-21 | 2003-12-09 | Isg Technologies Inc. | Apparatus and method for delivering an inert gas to prevent plugging in a slide gate |
| KR20040043374A (en) * | 2002-11-18 | 2004-05-24 | 주식회사 포스코 | Apparatus for sealing nozzle matching part in continuous casting |
| DE102004057381A1 (en) * | 2004-11-26 | 2006-06-01 | Heraeus Electro-Nite International N.V. | Method for controlling the flow and bottom outlet for a metallurgical vessel |
| PL1757386T3 (en) * | 2005-08-27 | 2009-01-30 | Refractory Intellectual Property Gmbh & Co Kg | A refractory pouring tube with porous insert |
| RU2331031C2 (en) * | 2006-03-01 | 2008-08-10 | Техком Импорт Экспорт Гмбх | Furnace for production of melted metal |
| JP5047854B2 (en) * | 2008-03-27 | 2012-10-10 | 黒崎播磨株式会社 | Immersion nozzle for continuous casting |
| EP2792433A1 (en) | 2013-04-16 | 2014-10-22 | Refractory Intellectual Property GmbH & Co. KG | A sealing system preferably in a slide gate on the spout of a metallurgical vessel and a spout casing |
| EP2878861A1 (en) | 2013-11-28 | 2015-06-03 | Refractory Intellectual Property GmbH & Co. KG | A gasket arrangement between two refractory sleeves on the spout of a metallurgical vessel |
| CN104117667B (en) * | 2014-08-01 | 2016-01-20 | 莱芜钢铁集团有限公司 | The device and method that continuous casting intermediate inlet is protected with sealed argon-blowing |
| CN104358879A (en) * | 2014-11-04 | 2015-02-18 | 西宁特殊钢股份有限公司 | Runner brick sealing washer |
| CN108127110B (en) * | 2017-02-28 | 2023-06-09 | 安徽工业大学 | A molten steel transfer device capable of protecting tapping and an electric furnace steelmaking system capable of protecting tapping |
| WO2019065247A1 (en) * | 2017-09-28 | 2019-04-04 | 黒崎播磨株式会社 | HOUSING STRUCTURE OF GAS INTRODUCING HOLE |
| UA126958U (en) * | 2018-02-12 | 2018-07-10 | Товариство З Обмеженою Відповідальністю "Шеффілд Рефракторіс Україна" | DEVICES FOR METAL PROTECTION FROM INTERACTION WITH THE ENVIRONMENTAL ATMOSPHERE |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3651998A (en) * | 1970-09-23 | 1972-03-28 | Metallurg Exoproducts Corp | Nozzle for a pouring ladle |
| NL185612C (en) * | 1981-06-05 | 1990-06-01 | Hoogovens Groep Bv | DEVICE FOR ATTACHING A SUBMERSION PIPE. |
| DE3226047C2 (en) * | 1982-07-12 | 1985-11-28 | Didier-Werke Ag, 6200 Wiesbaden | Connection between the outlet cone of the closure of a casting vessel for molten metal and the protective tube connected to it |
| DE3612403A1 (en) * | 1986-04-12 | 1987-10-15 | Hoesch Stahl Ag | Device for sealing the region between lower slide plate and long tube connection in concealed casting of steel melts in long tube technology |
| DE3620413A1 (en) * | 1986-06-18 | 1987-12-23 | Didier Werke Ag | Refractory jointing materials, in particular for discharge closures on metallurgical vessels |
| JPH0688127B2 (en) * | 1988-03-09 | 1994-11-09 | 川崎製鉄株式会社 | Slag outflow detection method |
| DE3838903A1 (en) * | 1988-11-17 | 1990-05-23 | Didier Werke Ag | GASKET FOR FIRE-RESISTANT, METAL MELTING LEADING COMPONENTS |
-
1990
- 1990-08-02 DE DE4024520A patent/DE4024520A1/en active Granted
-
1991
- 1991-06-07 ZA ZA914390A patent/ZA914390B/en unknown
- 1991-06-08 ES ES91109446T patent/ES2072482T5/en not_active Expired - Lifetime
- 1991-06-08 DE DE59105298T patent/DE59105298D1/en not_active Expired - Fee Related
- 1991-06-08 AT AT91109446T patent/ATE121651T1/en not_active IP Right Cessation
- 1991-06-08 EP EP91109446A patent/EP0469268B2/en not_active Expired - Lifetime
- 1991-07-02 KR KR1019910011165A patent/KR970001554B1/en not_active Expired - Fee Related
- 1991-07-04 RU SU915001078A patent/RU2013732C1/en active
- 1991-07-15 CA CA002047021A patent/CA2047021C/en not_active Expired - Fee Related
- 1991-07-18 JP JP3268139A patent/JP2961458B2/en not_active Expired - Lifetime
- 1991-07-25 FI FI913570A patent/FI94846C/en not_active IP Right Cessation
- 1991-07-30 US US07/738,141 patent/US5173242A/en not_active Expired - Lifetime
- 1991-07-31 CN CN91105237A patent/CN1025826C/en not_active Expired - Fee Related
- 1991-08-01 BR BR919103303A patent/BR9103303A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI94846C (en) | 1995-11-10 |
| RU2013732C1 (en) | 1994-05-30 |
| DE59105298D1 (en) | 1995-06-01 |
| EP0469268A3 (en) | 1992-12-09 |
| DE4024520C2 (en) | 1992-09-10 |
| JP2961458B2 (en) | 1999-10-12 |
| CA2047021C (en) | 2001-10-02 |
| ES2072482T3 (en) | 1995-07-16 |
| US5173242A (en) | 1992-12-22 |
| CA2047021A1 (en) | 1992-02-03 |
| CN1058555A (en) | 1992-02-12 |
| ATE121651T1 (en) | 1995-05-15 |
| EP0469268B1 (en) | 1995-04-26 |
| FI913570L (en) | 1992-02-03 |
| CN1025826C (en) | 1994-09-07 |
| BR9103303A (en) | 1992-05-26 |
| EP0469268A2 (en) | 1992-02-05 |
| JPH0584566A (en) | 1993-04-06 |
| DE4024520A1 (en) | 1992-02-06 |
| ES2072482T5 (en) | 2000-10-16 |
| FI913570A0 (en) | 1991-07-25 |
| FI94846B (en) | 1995-07-31 |
| KR970001554B1 (en) | 1997-02-11 |
| ZA914390B (en) | 1992-04-29 |
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