EP0552440B1 - Blowing lances suspension with integrated material supply - Google Patents

Blowing lances suspension with integrated material supply Download PDF

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Publication number
EP0552440B1
EP0552440B1 EP92119975A EP92119975A EP0552440B1 EP 0552440 B1 EP0552440 B1 EP 0552440B1 EP 92119975 A EP92119975 A EP 92119975A EP 92119975 A EP92119975 A EP 92119975A EP 0552440 B1 EP0552440 B1 EP 0552440B1
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EP
European Patent Office
Prior art keywords
lance
blowing
medium
connection face
suspension according
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
EP92119975A
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German (de)
French (fr)
Other versions
EP0552440A3 (en
EP0552440A2 (en
Inventor
Hubert Stomp
André Kremer
Daniel Fries
Marc Reichert
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Paul Wurth SA
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Paul Wurth SA
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Publication date
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Publication of EP0552440A2 publication Critical patent/EP0552440A2/en
Publication of EP0552440A3 publication Critical patent/EP0552440A3/xx
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    • 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
    • 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
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • F27D2003/169—Construction of the lance, e.g. lances for injecting particles

Definitions

  • the invention relates to a blow lance suspension with integrated media supply for metallurgical blow lances with a blow lance and a spear carriage, wherein the lance is to be attached to the spear carriage and the connection surfaces between the blow lance upper part and the spear carriage are essentially horizontal.
  • Blow lance suspensions with integrated media supply and horizontal connection surfaces between the lance and media feed device are known per se. It is characteristic of these known designs (see, for example, the patent specifications LU-69 797 and LU-86 985) that the primary connection surface points downwards and the secondary connection surface, ie the connection surface assigned to the lance, points upwards.
  • the lance must therefore be lifted up from a lifting device to the primary connection surface and then firmly coupled to the media supply device by means of a coupling device. The two processes are therefore unfavorably counter to gravity.
  • the coupling device, with its associated drive mechanism is still quite complex in an improved version (see the LU-88 017 patent).
  • the invention has for its object to simplify a blow lance suspension of the type mentioned.
  • a fork-shaped support arm for the lance is designed as a media collector box on the lance carrier slide and has an upper plate with a first, essentially horizontal, connection surface with first media openings arranged therein, and that a lance carrier plate is attached to the lance upper part perpendicular to the longitudinal axis of the lance, the underside of which forms a second, essentially horizontal, connection surface with second media openings suitably arranged therein, the second connection surface resting flush on the first connection surface by placing the lance on the support arm and media collector.
  • the advantages achieved by the invention consist, in particular, in that, compared to the prior art, the effect of gravity is used both when the lance is mounted on the lance carrier slide and when the connecting surfaces are pressed flush.
  • the lifting device on the lance slide is thus superfluous and the coupling device for the lance has a much simpler structure.
  • the transport bracket for the lance can be omitted, which results in significant space savings in the lance feeder corridor and the handling of the lances during transport is considerably simplified.
  • a holding and pressing device for the lance is attached between the lance carrier slide and the upper part of the lance in such a way that the lance can be pressed against the second connecting surface with this device with the first connection surface and at the same time through this device of the lance shaft can be rigidly connected to the lance slide.
  • This holding and pressing device thus advantageously strengthens the effect of gravity and improves the tightness between the two connection surfaces by a larger contact pressure.
  • the rigid connection of the lance body to the lance slide substantially maintains the stability of the lance suspension and shock vibrations are intercepted directly on the lance slide.
  • the holding and pressing device on the lance slide comprises a clamping device with a fork-shaped cantilever arm which is vertically displaceable on the lance carrier slide and can be hooked into two pins on the lance shaft from above.
  • This cantilever arm can be firmly pressed onto the lance pins by a vertical drive.
  • the holding and pressing device on the lance slide comprises a pair of swivel hooks which can be engaged in two pins on the lance shaft and can be pressed against the two pins on the lance shaft in the direction of gravity by means of associated drives.
  • the blowing lance suspension comprises coupling guides on the top plate and corresponding coupling guides on the lance supporting plate, which ensure that the media openings in the two plates are brought together in an exactly aligned manner.
  • lateral line connections for a gaseous fresh medium and a supply and return line of a liquid coolant of the lance which open into the corresponding first media openings of the first connection surface from below.
  • corresponding connecting lines between the lance and the second media openings in the second connection surface which of open into the corresponding second media openings above.
  • Corresponding connecting elements for electrical lines can also be provided in the first and second connection surfaces, if required.
  • a transport eyelet for the lance is advantageously attached directly to the upper part of the lance in a direct extension of the longitudinal axis of the lance and advantageously replaces the lance transport bracket.
  • FIG. 1 shows the upper part of a lance 10, which is coupled to a lance carrier slide 12 and its media connection device 14.
  • This Device 14 is attached to a fork-shaped, preferably console-like bracket 16 of the slide 12, which at the same time serves as a bearing for the upper part 18 of the lance.
  • the boom 16 is thus designed as a media feed device and is also referred to in the following for the sake of simplicity also as a media collector or media collector box 16.
  • the latter comprises connection pipe sockets 22, 24, 26 for connecting media lines (not shown), in the example shown the socket 22 for an oxygen supply, the socket 26 for a coolant flow and the socket 24 for the coolant return.
  • opening 30 is the oxygen supply opening
  • opening 32 is the inlet opening for the cooling medium
  • opening 34 is the outlet opening for the cooling medium.
  • the upper part of the lance essentially consists of a media feed housing 20 with media lines 41 (FIG. 8) running therein for the blowing process media and cooling media.
  • a support plate 36 is attached to the upper end of the lance 10 perpendicular to the longitudinal axis of the lance 10 (see FIGS. 1 and 8). After the lance 10 has been set down, the latter rests on the lance carrier slide 12 on the top plate 28 of the media collector box 16, so that the lance 10 is carried by the top plate 28 of the media collector.
  • openings 30 ', 32', 34 '(FIG. 8) matching the openings 30, 32, 34 are provided, with suitable peripheral sealing elements of course being assigned to these different pairs of openings (not explicitly shown).
  • the support plate 36 is covered by the media feed housing 20, from which the oxygen line 38 (see FIG. 8) protrudes in the example shown.
  • a lance 10 is withdrawn from a lance reserve (not shown) through a lance delivery corridor (not shown), e.g. from the right, in front of the lance carrier carriage 12 into a ready-for-assembly position. This happens e.g. with the help of a trolley with a crane hook (not shown), the crane hook being latched directly onto a transport eye 40 of the lance 10. It is advantageous here that, according to the invention, a transport bracket, as mentioned above, is no longer required, since the transport eyelet 40 can be attached directly to the upper part of the lance in the extension of the longitudinal axis of the lance 10.
  • the lance 10 is inserted by means of the eyelet 40 into the incision 42 in the media collector 10 and lowered with its support plate 36 onto the top plate 28 of the media collector, guide pins 74, 76, 78 (FIGS. 5 and 6) of the top plate 28 with corresponding guide bores in the Support plate 36 (not shown) intermesh, so that the corresponding media openings in the two plates are brought together in an exactly aligned manner.
  • the coupling is advantageously carried out by a firm, further sealing Pressing the two contact surfaces of the plates 36 and 28 together is completed.
  • a vertically displaceable sliding block device 44 or roller device 44 (FIG. 4)
  • a fork-shaped arm 46 which has pins 48 arranged on both sides of the shaft of the lance 10, 50 can be engaged from above. If the jib 46 is moved downwards with the aid of the device 44, this not only achieves the desired contact pressure between the plates 28 and 36, but also supports the lance in the area of the jib 46 on the lance carriage 12. After completion of this process, the lance is immovably attached to the slide 12.
  • the essential details of the drive device for the boom 46 can be seen from FIG.
  • the sliding block 52 is connected here via a spindle system 54 to a drive motor 56, which converts the rotary movement of the drive motor 56 into the required linear movement.
  • FIG. 9 shows a second variant in order to generate the desired contact pressure between the plates 28 'and 36' and to additionally rigidly connect the lance 10 'to the lance carrier slide 12'.
  • This system works on the basis of a swivel hook arrangement 60, such as is described in principle, for example, in the patent specification LU-87 761, with the fundamental difference that the hooks serve essentially only for fixing the lance at a first position of the slide, while the clutch contact pressure is generated by a second swivel hook arrangement.
  • the swivel hook arrangement 60 not only ensures that the lance 10 ′ is fixed at a first or second point of the carriage 12 ', but also the pressing together of the two plates 36' and 28 '.
  • the hook system must be designed such that it pulls the lance 10 'down when its drives (the linear motors 62, 62' in FIG. 9) are actuated.
  • the principle of operation of such a swivel hook device can be found in the patent LU-87 761.
  • pressure limiters e.g. in the form of load cells are provided, which switch off the respective pressing system when a predetermined coupling pressure between the plates 28 and 36, or 28 'and 36' is reached.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Nozzles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention relates to a blowing lance suspension with integrated medium supply. In accordance with this invention, a U-shaped medium collector box having a horizontal top plate as carrier arm and a first connection surface is provided on the lance carriage. The medium connection pipes lead into this first connection surface. A lance carrier plate is provided, at right angles to the longitudinal axis of the lance, on the top part of the lance. The underside of the lance carrier plate forms a second connection surface into which the medium distributor pipes of the lance lead fittingly. After the lance has been laid down on the carrier arm of the lance carriage, the lance carrier plate is carried by the horizontal top plate, so that between the first and second connection surfaces, the connection of the medium pipes is made through the action of gravity.

Description

Die Erfindung betrifft eine Blaslanzenaufhängung mit integrierter Medienversorgung für metallurgische Blaslanzen mit einer Blaslanze und einem hanzenträgerschlitten wobei die Lanze an dem Lanzenträgerschlitten anzubringen ist und die Anschlussflächen zwischen dem Blaslanzenoberteil und dem Lanzenträgerschlitten im wesentlichen horizontal liegen.The invention relates to a blow lance suspension with integrated media supply for metallurgical blow lances with a blow lance and a spear carriage, wherein the lance is to be attached to the spear carriage and the connection surfaces between the blow lance upper part and the spear carriage are essentially horizontal.

Blaslanzenaufhängungen mit integrierter Medienversorgung und horizontalen Anschlussflächen zwischen Lanze und Medienzufuhrvorrichtung sind an sich bekannt. Kennzeichnend bei diesen bekannten Ausführungen (siehe z.B. die Patentschriften LU-69 797 und LU-86 985) ist, dass die Primäranschlussfläche nach unten zeigt und die Sekundäranschlussfläche, d.h. die der Lanze zugeordnete Anschlussfläche, nach oben zeigt. Zum dichten und festen Ankuppeln der Lanze an die Medienzufuhrvorrichtung muss deshalb die Lanze von einer Hubvorrichtung bis zur Primäranschlussfläche hochgehoben und sodann mittels einer Kuppelvorrichtung fest an die Medienzufuhrvorrichtung angekuppelt werden. Die beiden Vorgänge erfolgen somit natürlich ungünstigerweise entgegen die Schwerkraft. Ausserdem ist die Kuppelvorrichtung mit ihrem zugeordneten Antriebmechanismus auch in einer verbesserten Ausführung (siehe hierzu die Patentschrift LU-88 017) noch recht aufwendig. Ein weiterer Nachteil der in dieser Patenschrift vorgeschlagenen Vorrichtung besteht darin, dass zwischen dem Kranhaken und dem Lanzenoberteil für den Transport der Lanze ein Transportbügel vorgesehen sein muss, um den Lanzenoberteil unter die Medienzufuhrvorrichtung einzuführen, wobei das Entfernen dieses Bügels nach dem Einbringen der Lanze, sowie das Anbringen desselben für das Herausführen des Lanzenoberteils mit umständlichen Manipulationen verbunden ist. Auch muss, bedingt durch die Mindesweite dieses Bügels, welche durch die Breite der Medienzufuhrvorrichtung bestimmt wird, der Lanzenzubringkorridor eine grössere Breite als normal aufweisen.Blow lance suspensions with integrated media supply and horizontal connection surfaces between the lance and media feed device are known per se. It is characteristic of these known designs (see, for example, the patent specifications LU-69 797 and LU-86 985) that the primary connection surface points downwards and the secondary connection surface, ie the connection surface assigned to the lance, points upwards. For the tight and firm coupling of the lance to the media supply device, the lance must therefore be lifted up from a lifting device to the primary connection surface and then firmly coupled to the media supply device by means of a coupling device. The two processes are therefore unfavorably counter to gravity. In addition, the coupling device, with its associated drive mechanism, is still quite complex in an improved version (see the LU-88 017 patent). Another disadvantage of the device proposed in this patent is that a transport bracket must be provided between the crane hook and the lance upper part for the transport of the lance in order to insert the lance upper part under the media feed device, the removal of this bracket after the insertion of the lance, as well attaching the same for the removal of the lance upper part is associated with cumbersome manipulations. Also, due to the minimum width of this bracket, which is determined by the width of the media feed device, the Lance feed corridor is wider than normal.

Der Erfindung liegt die Aufgabe zugrunde, eine Blaslanzeaufhängung der eingangs genannten Art zu vereinfachen.The invention has for its object to simplify a blow lance suspension of the type mentioned.

Diese Aufgabe wird erfüllt dadurch, dass am Lanzenträgerschlitten ein gabelförmiger Tragausleger für die Lanze als Medienkollektorkasten ausgebildet ist und eine Oberplatte mit einer ersten, im wesentlichen horizontalen, Anschlussfläche mit darin angeordneten ersten Medienöffnungen aufweist, und dass am Lanzenoberteil eine Lanzentragplatte senkrecht zur Lanzenlängsachse angebracht ist, deren Unterseite eine zweite, im wesentlichen horizontale, Anschlussfläche mit darin passend angeordneten zweiten Medienöffnungen ausbildet, wobei durch Absetzen der Lanze auf dem Tragausleger und Medienkollektor die zweite Anschlussfläche auf der ersten Anschlussfläche bündig aufliegt.This object is achieved in that a fork-shaped support arm for the lance is designed as a media collector box on the lance carrier slide and has an upper plate with a first, essentially horizontal, connection surface with first media openings arranged therein, and that a lance carrier plate is attached to the lance upper part perpendicular to the longitudinal axis of the lance, the underside of which forms a second, essentially horizontal, connection surface with second media openings suitably arranged therein, the second connection surface resting flush on the first connection surface by placing the lance on the support arm and media collector.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass im Vergleich zum Stand der Technik sowohl bei der Lanzenmontage am Lanzenträgerschlitten, als auch beim bündigen Anpressen der Anschlussflächen die Wirkung der Schwerkraft ausgenützt wird. Somit wird die Hubvorrichtung am Lanzenschlitten überflüssig und die Kuppelvorrichtung für die Lanze erhält einen wesentlich einfacheren Aufbau. Weiterhin kann der Transportbügel für die Lanze entfallen, was wesentliche Platzersparnisse im Lanzenzubringerkorridor zur Folge hat, sowie die Handhabung der Lanzen beim Transport wesentlich vereinfacht.The advantages achieved by the invention consist, in particular, in that, compared to the prior art, the effect of gravity is used both when the lance is mounted on the lance carrier slide and when the connecting surfaces are pressed flush. The lifting device on the lance slide is thus superfluous and the coupling device for the lance has a much simpler structure. Furthermore, the transport bracket for the lance can be omitted, which results in significant space savings in the lance feeder corridor and the handling of the lances during transport is considerably simplified.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben. In einer ersten vorteilhaften Ausgestaltung ist zwischen dem Lanzenträgerschlitten und dem Lanzenoberteil eine Festhalte- und Anpressvorrichtung für die Lanze derart angebracht, dass die Lanze durch diese Vorrichtung mit der ersten Anschlussfläche an die zweite Anschlussfläche anpressbar ist und dass gleichzeitig durch diese Vorrichtung der Lanzenschaft mit dem Lanzenschlitten starr verbindbar ist. Diese Festhalte- und Anpressvorrichtung verstärkt also vorteilhaft die Wirkung der Schwerkraft und verbessert durch einen grösseren Anpressdruck die Dichtheit zwischen den zwei Anschlussflächen. Durch die starre Verbindung des Lanzenkörpers mit dem Lanzenschlitten wird die Stabilität der Lanzenaufhängung wesentlich erhält und Stosschwingungen werden direkt am Lanzenschlitten abgefangen.Advantageous embodiments of the invention are specified in the subclaims. In a first advantageous embodiment, a holding and pressing device for the lance is attached between the lance carrier slide and the upper part of the lance in such a way that the lance can be pressed against the second connecting surface with this device with the first connection surface and at the same time through this device of the lance shaft can be rigidly connected to the lance slide. This holding and pressing device thus advantageously strengthens the effect of gravity and improves the tightness between the two connection surfaces by a larger contact pressure. The rigid connection of the lance body to the lance slide substantially maintains the stability of the lance suspension and shock vibrations are intercepted directly on the lance slide.

In einer ersten Ausgestaltung umfasst die Festhalte- und Anpressvorrichtung an dem Lanzenschlitten eine Klemmvorrichtung mit einem gabelförmigen Auslegerarm, welcher am Lanzenträgerschlitten vertikal verschiebbar ist und in zwei Zapfen am Lanzenschaft von oben einhakbar ist. Dieser Auslegerarm ist durch einen vertikalen Antrieb fest an die Zapfen der Lanze anpressbar.In a first embodiment, the holding and pressing device on the lance slide comprises a clamping device with a fork-shaped cantilever arm which is vertically displaceable on the lance carrier slide and can be hooked into two pins on the lance shaft from above. This cantilever arm can be firmly pressed onto the lance pins by a vertical drive.

In einer zweiten Ausgestaltung umfasst die Festhalte- und Anpressvorrichtung an dem Lanzenschlitten ein Paar Schwenkhaken, welche in zwei Zapfen am Lanzenschaft eingreifbar sind und mit Hilfe von zugeordneten Antrieben in Richtung der Schwerkraft an die zwei Zapfen am Lanzenschaft anpressbar sind.In a second embodiment, the holding and pressing device on the lance slide comprises a pair of swivel hooks which can be engaged in two pins on the lance shaft and can be pressed against the two pins on the lance shaft in the direction of gravity by means of associated drives.

In einer weiteren vorteilhaften Ausgestaltung umfasst die Blaslanzenaufhängung Kupplungsführungen an der Oberplatte und korrespondierende Kupplungsführungen an der Lanzentragplatte, welche gewährleisten, dass die Medienöffnungen in den beiden Platten genau fluchtend zusammengeführt werden.In a further advantageous embodiment, the blowing lance suspension comprises coupling guides on the top plate and corresponding coupling guides on the lance supporting plate, which ensure that the media openings in the two plates are brought together in an exactly aligned manner.

Am Medienkollektor befinden sich vorzugsweise seitliche Leitungsanschlüsse für ein gasförmiges Frischemedium und eine Vor- und Rücklaufleitung eines flüssigen Kühlmittels der Lanze, welche von unten in die entsprechenden ersten Medienöffnungen der ersten Anschlussfläche einmünden. In dem Lanzenoberteil befinden sich entsprechende Verbindungsleitungen zwischen der Lanze und den zweiten Medienöffnungen in der zweiten Anschlussfläche, welche von oben in die entsprechenden zweiten Medienöffnungen einmünden.At the media collector there are preferably lateral line connections for a gaseous fresh medium and a supply and return line of a liquid coolant of the lance, which open into the corresponding first media openings of the first connection surface from below. In the upper part of the lance there are corresponding connecting lines between the lance and the second media openings in the second connection surface, which of open into the corresponding second media openings above.

In der ersten und zweiten Anschlussfläche können bei Bedarf auch entsprechende Verbindungselemente für elektrische Leitungen vorgesehen werden.Corresponding connecting elements for electrical lines can also be provided in the first and second connection surfaces, if required.

Eine Transportöse für die Lanze ist vorteilhaft direkt am Lanzenoberteil in direkter Verlängerung der Längsachse der Lanze befestigt und ersetzt vorteilhaft den Lanzentransportbügel.A transport eyelet for the lance is advantageously attached directly to the upper part of the lance in a direct extension of the longitudinal axis of the lance and advantageously replaces the lance transport bracket.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Es zeigen:

  • Figur 1, eine Vorderansicht der erfindungsgemässen Aufhängung einer Blaslanze an einem Lanzenträgerschlitten;
  • Figur 2, eine Seitenansicht der Vorrichtung nach Figur 1;
  • Figur 3, eine perspektivische Darstellung der Vorrichtung nach Figur 1;
  • Figur 4, eine rückwärtige, perspektivische Darstellung der Vorrichtung nach Figur 3;
  • Figur 5, eine Seitenansicht eines als Medienkollektorkasten ausgebildeten Tragauslegers für die Lanze;
  • Figur 6, eine Draufsicht auf die Vorrichtung nach Figur 5;
  • Figur 7, einen Schnitt A-A durch die Vorrichtung nach Figur 5;
  • Figur 8, eine perspektivische Darstellung einer von vielen Möglichkeiten der Medienleitungsführung zwischen Lanzenoberteil und Lanzentragplatte;
  • Figur 9, eine Variante der Festhalte- und Anpressvorrichtung zwischen Lanzenträgerschlitten und Lanzenoberteil.
Embodiments of the invention are shown in the drawings and are described in more detail below. Show it:
  • FIG. 1 shows a front view of the suspension of a blowing lance according to the invention on a lance carrier slide;
  • Figure 2 is a side view of the device of Figure 1;
  • Figure 3 is a perspective view of the device of Figure 1;
  • Figure 4 is a rear perspective view of the device of Figure 3;
  • FIG. 5 shows a side view of a support arm for the lance designed as a media collector box;
  • Figure 6 is a plan view of the device of Figure 5;
  • Figure 7 shows a section AA through the device of Figure 5;
  • FIG. 8 shows a perspective illustration of one of many possibilities for the media line routing between the upper part of the lance and the lance supporting plate;
  • Figure 9, a variant of the holding and pressing device between the lance carrier slide and the upper part of the lance.

Figur 1 zeigt den Oberteil einer Lanze 10, welche an einen Lanzenträgerschlitten 12 und dessen Medienanschlussvorrichtung 14 angekuppelt ist. Diese Vorrichtung 14 ist an einem gabelförmigen, vorzugsweise konsolenartig abgestützten Ausleger 16 des Schlittens 12 angebracht, welcher gleichzeitig als Auflagelager für das Lanzenoberteil 18 dient. Der Ausleger 16 ist also als Medienzufuhreinrichtung ausgebildet und wird im folgenden einfachheitshalber auch als Medienkollektor oder Medienkollektorkasten 16 bezeichnet. Letzterer umfasst Anschluss-Rohrstutzen 22, 24, 26 zum Anschliessen von Medienleitungen (nicht gezeigt), wobei im dargestellten Beispiel der Stutzen 22 für eine Sauerstoffzufuhr, der Stutzen 26 für einen Kühlflüssigkeitsvorlauf und der Stutzen 24 der Kühlflüssigkeitsrücklauf vorgesehen ist. Diese verschiedenen Rohrstutzen 22, 24, 26 sind im Innern des Medienkollektors 16 als Medienleitungen ausgebildet, welche senkrecht nach oben in entsprechende Medienöffnungen in einer horizontalen Oberplatte 28 ausmünden (siehe Figuren 6 und 7). In Figur 6 ist die Öffnung 30 die Sauerstoffzufuhröffnung, die Öffnung 32 die Eintrittsöffnung für das Kühlmedium und die Öffnung 34 die Austrittsöffnung für das Kühlmedium.FIG. 1 shows the upper part of a lance 10, which is coupled to a lance carrier slide 12 and its media connection device 14. This Device 14 is attached to a fork-shaped, preferably console-like bracket 16 of the slide 12, which at the same time serves as a bearing for the upper part 18 of the lance. The boom 16 is thus designed as a media feed device and is also referred to in the following for the sake of simplicity also as a media collector or media collector box 16. The latter comprises connection pipe sockets 22, 24, 26 for connecting media lines (not shown), in the example shown the socket 22 for an oxygen supply, the socket 26 for a coolant flow and the socket 24 for the coolant return. These various pipe sockets 22, 24, 26 are formed in the interior of the media collector 16 as media lines which open vertically upward into corresponding media openings in a horizontal top plate 28 (see FIGS. 6 and 7). In FIG. 6, opening 30 is the oxygen supply opening, opening 32 is the inlet opening for the cooling medium and opening 34 is the outlet opening for the cooling medium.

Es versteht sich von selbst, dass, falls erforderlich, am Medienkollektor 16 noch weitere Medienzufuhrmöglichkeiten geschaffen werden können, wie z.B. für zusätzliche metallurgische Gase oder auch für eine Stromzufuhr zum Antreiben von, im Lanzenblaskopf vorgesehenen, elektrischen Vorrichtungen. Verbindungselemente für Messleitungen können ebenfalls vorgesehen werden.It goes without saying that, if necessary, further media supply options can be created on the media collector 16, e.g. for additional metallurgical gases or also for a power supply for driving electrical devices provided in the lance blow head. Connecting elements for measuring lines can also be provided.

Das Lanzenoberteil besteht im wesentlichen aus einem Medienzufuhrgehäuse 20 mit darin verlaufenden Medienleitungen 41 (Figur 8) für die Blasprozessmedien und Kühlmedien. Am oberen Ende der Lanze 10 ist dabei senkrecht zur Längsachse der Lanze 10 eine Tragplatte 36 angebracht (siehe Figuren 1 und 8). Letztere liegt nach dem Absetzen der Lanze 10 am Lanzenträgerschlitten 12 auf der Oberplatte 28 des Medienkollektorkastens 16 auf, so dass die Lanze 10 von der Oberplatte 28 des Medienkollektors getragen wird. In dieser Tragplatte 36 der Lanze sind, zu den Öffnungen 30, 32, 34, passende Öffnungen 30', 32', 34' (Figur 8) vorgesehen, wobei natürlich geeignete periphere Abdichtelemente diesen verschiedenen Öffnungspaarungen zugeordnet sind (nicht explizit gezeigt). Die Tragplatte 36 wird vom Medienzufuhrgehäuse 20 überdeckt, aus dem im dargestellten Beispiel die Sauerstoffleitung 38 (siehe Figur 8) hervorragt.The upper part of the lance essentially consists of a media feed housing 20 with media lines 41 (FIG. 8) running therein for the blowing process media and cooling media. A support plate 36 is attached to the upper end of the lance 10 perpendicular to the longitudinal axis of the lance 10 (see FIGS. 1 and 8). After the lance 10 has been set down, the latter rests on the lance carrier slide 12 on the top plate 28 of the media collector box 16, so that the lance 10 is carried by the top plate 28 of the media collector. In this support plate 36 of the lance, openings 30 ', 32', 34 '(FIG. 8) matching the openings 30, 32, 34 are provided, with suitable peripheral sealing elements of course being assigned to these different pairs of openings (not explicitly shown). The support plate 36 is covered by the media feed housing 20, from which the oxygen line 38 (see FIG. 8) protrudes in the example shown.

Der Kupplungsvorgang zum Verbinden von Lanze 10 und Lanzenträgerschlitten 12 lässt sich anhand der Figur 3 erläutern.The coupling process for connecting the lance 10 and the lance carrier slide 12 can be explained with reference to FIG. 3.

Eine Lanze 10 wird aus einem (nicht gezeigten) Lanzenreservestand durch einen (nicht gezeigten) Lanzenzubringkorridor, z.B. von rechts her, vor dem Lanzenträgerschlitten 12 in eine Montagebereitschaftsstellung gebracht. Dies geschieht z.B. mit Hilfe einer Laufkatze mit Kranhaken (nicht gezeigt), wobei der Kranhaken direkt an einer Transportöse 40 der Lanze 10 eingeklinkt ist. Günstig hierbei ist, dass erfindungsgemäss kein Transportbügel, wie er weiter oben erwähnt wird, mehr benötigt wird, da die Transportöse 40 direkt an dem Lanzenoberteil in der Verlängerung der Längsachse der Lanze 10 angebracht werden kann.A lance 10 is withdrawn from a lance reserve (not shown) through a lance delivery corridor (not shown), e.g. from the right, in front of the lance carrier carriage 12 into a ready-for-assembly position. This happens e.g. with the help of a trolley with a crane hook (not shown), the crane hook being latched directly onto a transport eye 40 of the lance 10. It is advantageous here that, according to the invention, a transport bracket, as mentioned above, is no longer required, since the transport eyelet 40 can be attached directly to the upper part of the lance in the extension of the longitudinal axis of the lance 10.

Nunmehr wird die Lanze 10 mittels der Öse 40 in den Einschnitt 42 im Medienkollektor 10 hineingeführt und mit ihrer Tragplatte 36 auf die Oberplatte 28 des Medienkollektors herabgelassen, wobei Führungszapfen 74, 76, 78 (Figuren 5 und 6) der Oberplatte 28 mit entsprechende Führungsbohrungen der Tragplatte 36 (nicht gezeigt) ineinandergreifen, so dass die korrespondierenden Medienöffnungen in den beiden Platten genau fluchtend zusammengeführt werden.Now the lance 10 is inserted by means of the eyelet 40 into the incision 42 in the media collector 10 and lowered with its support plate 36 onto the top plate 28 of the media collector, guide pins 74, 76, 78 (FIGS. 5 and 6) of the top plate 28 with corresponding guide bores in the Support plate 36 (not shown) intermesh, so that the corresponding media openings in the two plates are brought together in an exactly aligned manner.

Nachdem die Lanze 10 auf der Oberplatte 28 abgesetzt ist, von dieser also getragen wird, wird das Ankuppeln vorteilhaft durch ein festes, weiter abdichtendes Aneinanderpressen der beiden Kontaktflächen der Platten 36 und 28 abgeschlossen. Dies geschieht in der Ausgestaltung nach den Figuren 3 und 4 mit Hilfe einer senkrecht verschiebbaren Kulissenschiebervorrichtung 44 (bzw. Rollenvorrichtung 44) (Figur 4), an welcher ein gabelförmiger Ausleger 46 vorgesehen ist, welcher mit beidseitig am Schaft der Lanze 10 angeordneten Zapfen 48, 50 von oben eingreifbar ist. Wird der Ausleger 46 mit Hilfe der Vorrichtung 44 nach unten verschoben, so wird dadurch nicht nur die gewünschte Anpresskraft zwischen den Platten 28 und 36 erzielt, sondern auch die Lanze im Bereich des Auslegers 46 durch diesen zusätzlich am Lanzenschlitten 12 abgestützt. Nach Beendigung dieses Vorgangs ist die Lanze also unverrückbar am Schlitten 12 festgelegt.After the lance 10 is set down on the top plate 28, that is to say carried by it, the coupling is advantageously carried out by a firm, further sealing Pressing the two contact surfaces of the plates 36 and 28 together is completed. This is done in the embodiment according to FIGS. 3 and 4 with the aid of a vertically displaceable sliding block device 44 (or roller device 44) (FIG. 4), on which a fork-shaped arm 46 is provided, which has pins 48 arranged on both sides of the shaft of the lance 10, 50 can be engaged from above. If the jib 46 is moved downwards with the aid of the device 44, this not only achieves the desired contact pressure between the plates 28 and 36, but also supports the lance in the area of the jib 46 on the lance carriage 12. After completion of this process, the lance is immovably attached to the slide 12.

Aus Figur 4 sind die wesentlichen Details der Antriebsvorrichtung für den Ausleger 46 zu ersehen. Der Kulissenschieber 52 wird hier über ein Spindelsystem 54 mit einem Antriebsmotor 56 verbunden, welches die Drehbewegung des Antriebsmotors 56 in die benötigte Linearbewegung umwandelt.The essential details of the drive device for the boom 46 can be seen from FIG. The sliding block 52 is connected here via a spindle system 54 to a drive motor 56, which converts the rotary movement of the drive motor 56 into the required linear movement.

Selbstverständlich bietet der Stand der Technik mannigfache andere Möglichkeiten, um einem Ausleger 46, oder dergleichen, eine Hubbewegung zu vermitteln.Of course, the prior art offers numerous other possibilities for imparting a lifting movement to a boom 46 or the like.

Figur 9 zeigt eine zweite Variante, um die gewünschte Anpresskraft zwischen den Platten 28' und 36' zu erzeugen und die Lanze 10' zusätzlich mit dem Lanzenträgerschlitten 12' starr zu verbinden. Dieses System funktioniert auf der Basis einer Schwenkhakenanordnung 60, wie eine solche prinzipiell z.B. in der Patentschrift LU-87 761 beschrieben wird, mit dem grundlegenden Unterschied, dass dort die Haken im wesentlichen nur zum Festlegen der Lanze an einer ersten Stelle des Schlittens dienen, während die Kupplungsanpresskraft von einer zweiten Schwenkhakenanordnung erzeugt wird. Abweichend hiervon besorgt die Schwenkhakenanordnung 60 nicht nur das Festlegen der Lanze 10' an einem ersten, bzw. zweiten Punkt des Schlittens 12', sondern auch das Gegeneinanderpressen der beiden Platten 36' und 28'. Zu diesem Zweck muss das Hakensystem solcherart ausgelegt sein, dass es beim Betätigen seiner Antriebe (in Figur 9 den Linearmotoren 62, 62') die Lanze 10' nach unten zieht. Die prinzipielle Funktionsweise einer derartigen Schwenkhakenvorrichtung ist dabei aus der Patentschrift LU-87 761 zu entnehmen.FIG. 9 shows a second variant in order to generate the desired contact pressure between the plates 28 'and 36' and to additionally rigidly connect the lance 10 'to the lance carrier slide 12'. This system works on the basis of a swivel hook arrangement 60, such as is described in principle, for example, in the patent specification LU-87 761, with the fundamental difference that the hooks serve essentially only for fixing the lance at a first position of the slide, while the clutch contact pressure is generated by a second swivel hook arrangement. In a departure from this, the swivel hook arrangement 60 not only ensures that the lance 10 ′ is fixed at a first or second point of the carriage 12 ', but also the pressing together of the two plates 36' and 28 '. For this purpose, the hook system must be designed such that it pulls the lance 10 'down when its drives (the linear motors 62, 62' in FIG. 9) are actuated. The principle of operation of such a swivel hook device can be found in the patent LU-87 761.

Es versteht sich von selbst, dass sowohl bei der Ausführung nach den Figuren 3 und 4 als auch bei derjenigen nach Figur 9 Druckbegrenzer, z.B. in Form von Kraftmessdosen, vorgesehen sind, die das jeweilige Anpressystem beim Erreichen eines vorbestimmten Kupplungsdruckes zwischen den Platten 28 und 36, bzw. 28' und 36', abschalten.It goes without saying that both in the embodiment according to FIGS. 3 and 4 and in the embodiment according to FIG. 9, pressure limiters, e.g. in the form of load cells are provided, which switch off the respective pressing system when a predetermined coupling pressure between the plates 28 and 36, or 28 'and 36' is reached.

Claims (9)

  1. Blowing lance suspension with integrated medium supply for metallurgical blowing lances with a blowing lance and a lance carrier slide, the lance being mounted on the lance carrier slide and the connection faces between the upper part of the blowing lance and the lance carrier slide being essentially horizontal, characterised in that a forked supporting arm for the lance (10) is designed as a medium collector tank (16) on the lance carrier slide (12, 12') and has a top plate (28) with a first, essentially horizontal connection face (29) with first medium openings (30, 32, 34) arranged therein, and that a lance supporting plate (36) is mounted on the upper part of the lance at right angles to the longitudinal axis of the lance, its underside forming a second essentially horizontal connection face (37) with second medium openings (30', 32', 34') suitably arranged therein, the second connection face (37) lying flush on the first connection face (29) when the lance (10, 10') is lowered on to the supporting arm and medium collector (16).
  2. Blowing lance suspension according to claim 1, characterised in that a securing and pressure device for the lance (10) is mounted between the lance carrier slide (12) and the upper part of the lance in such a way that the lance (10) with the first connection face (29) can be additionally pressed against the second connection face (37) by this device and that at the same time the lance shank can be rigidly connected by this device to the lance carrier slide.
  3. Blowing lance suspension according to claim 2, characterised in that the securing and pressure device on the lance slide (12) comprises a clamp (44) with a forked arm (46), which can be moved vertically on the lance carrier slide and can be hooked from above into two journals (48, 50) on the lance shank.
  4. Blowing lance suspension according to claim 3, characterised in that the arm (46) can be pressed firmly against the journals (48, 50) by a vertical drive (46, 54).
  5. Blowing lance suspension according to claim 2, characterised in that the securing and pressure device on the lance slide (12) has a pair of swivelling hooks (61, 61'), which can engage in two journals (48, 50) on the lance shank, and can be pressed against the two journals (48, 50) on the lance shank with the aid of assigned drives (62, 62') in the direction of gravity.
  6. Blowing lance suspension according to one of claims 1 to 5, characterised by lateral pipe connections (22, 24, 26) on the medium collector (16) for a gaseous blowing medium and a supply and return pipe for a liquid coolant for the lance (10), the pipe connections terminating below in the corresponding first medium openings (30, 32, 34) of the first connection face (29).
  7. Blowing lance suspension according to claim 6, characterised by connecting pipes between the lance (10) and the second medium openings (30', 32', 34') in the second connection face (37), the connecting pipes terminating from above in the corresponding second medium openings (30', 32', 34') of the second connection face (37).
  8. Blowing lance suspension according to one of claims 1 to 7, characterised by suitable connection elements for electrical leads in the first and second connection face (29, 37).
  9. Blowing lance suspension according to one of claims 1 to 8, characterised by a transport eyebolt (40, 40') on the upper part of the lance as a direct extension of the longitudinal axis of the lance (10).
EP92119975A 1992-01-24 1992-11-21 Blowing lances suspension with integrated material supply Expired - Lifetime EP0552440B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU88057 1992-01-24
LU88057A LU88057A1 (en) 1992-01-24 1992-01-24 BLOWING HANGING WITH COMBINED MEDIA SUPPLY

Publications (3)

Publication Number Publication Date
EP0552440A2 EP0552440A2 (en) 1993-07-28
EP0552440A3 EP0552440A3 (en) 1994-01-05
EP0552440B1 true EP0552440B1 (en) 1997-10-01

Family

ID=19731335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119975A Expired - Lifetime EP0552440B1 (en) 1992-01-24 1992-11-21 Blowing lances suspension with integrated material supply

Country Status (15)

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US (1) US5301928A (en)
EP (1) EP0552440B1 (en)
JP (1) JPH05345909A (en)
KR (1) KR100219380B1 (en)
CN (1) CN1033918C (en)
AT (1) ATE158820T1 (en)
AU (1) AU650378B2 (en)
BR (1) BR9300085A (en)
CA (1) CA2086702C (en)
CZ (1) CZ284582B6 (en)
DE (1) DE59208947D1 (en)
LU (1) LU88057A1 (en)
SK (1) SK391192A3 (en)
TW (1) TW223662B (en)
ZA (1) ZA929692B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88808A1 (en) * 1996-08-28 1998-03-02 Wurth Paul Sa Device for coupling a blowing lance to a manifold
TWI373529B (en) * 2004-07-27 2012-10-01 Tech Resources Pty Ltd Smelting apparatus
EP3726123B1 (en) * 2018-02-05 2024-01-10 Tatsuno Corporation Nozzle hanger

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6601189U (en) * 1968-03-29 1969-02-27 Demag Ag BLOW LANCE DEVICE FOR METALLURGICAL OVENS IN PARTICULAR FOR STEELWORKS CONVERTER
LU69797A1 (en) * 1974-04-05 1974-11-21
SU574474A1 (en) * 1975-03-07 1977-09-30 Ждановский Ордена Ленина Завод Тяжелого Машиностроения Им. 50-Летия Великой Октябрьской Социалистической Революции Device for mounting tuyere flexible hoses
DE2609564A1 (en) * 1976-03-08 1977-09-15 Siemens Ag PROCESS FOR SEPARATING ELEMENTAL SILICON FROM THE GAS PHASE
LU86985A1 (en) * 1987-09-07 1989-04-06 Wurth Paul Sa AUTOMATIC LANCES CHANGER
EP0441767B1 (en) * 1990-02-01 1995-01-11 Voest-Alpine Industrieanlagenbau Gmbh An arrangement for supplying media to a blowing lance
LU87761A1 (en) * 1990-07-04 1992-03-11 Wurth Paul Sa DEVICE FOR AUTOMATICALLY COUPLING AN INSUFFLATION LANCE TO A CONNECTING HEAD

Also Published As

Publication number Publication date
TW223662B (en) 1994-05-11
AU650378B2 (en) 1994-06-16
KR930016549A (en) 1993-08-26
CN1074943A (en) 1993-08-04
EP0552440A3 (en) 1994-01-05
US5301928A (en) 1994-04-12
SK391192A3 (en) 1996-06-05
AU3014892A (en) 1993-07-29
BR9300085A (en) 1993-07-27
JPH05345909A (en) 1993-12-27
ATE158820T1 (en) 1997-10-15
ZA929692B (en) 1993-06-09
CZ284582B6 (en) 1999-01-13
CA2086702A1 (en) 1993-07-25
CZ391192A3 (en) 1993-08-11
EP0552440A2 (en) 1993-07-28
CA2086702C (en) 2003-12-30
KR100219380B1 (en) 1999-09-01
CN1033918C (en) 1997-01-29
DE59208947D1 (en) 1997-11-06
LU88057A1 (en) 1993-08-17

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