EP0056942A2 - Installation de fixation et de changement des lances immergées - Google Patents

Installation de fixation et de changement des lances immergées Download PDF

Info

Publication number
EP0056942A2
EP0056942A2 EP82100132A EP82100132A EP0056942A2 EP 0056942 A2 EP0056942 A2 EP 0056942A2 EP 82100132 A EP82100132 A EP 82100132A EP 82100132 A EP82100132 A EP 82100132A EP 0056942 A2 EP0056942 A2 EP 0056942A2
Authority
EP
European Patent Office
Prior art keywords
lance
linkage
diving
gripper
changing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82100132A
Other languages
German (de)
English (en)
Other versions
EP0056942A3 (en
EP0056942B1 (fr
Inventor
Léon Ulveling
Pierre Mailliet
Gilbert Bernard
Nico Reiffers
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
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT82100132T priority Critical patent/ATE16024T1/de
Publication of EP0056942A2 publication Critical patent/EP0056942A2/fr
Publication of EP0056942A3 publication Critical patent/EP0056942A3/de
Application granted granted Critical
Publication of EP0056942B1 publication Critical patent/EP0056942B1/fr
Expired legal-status Critical Current

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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
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material

Definitions

  • the invention relates to a device for holding and changing lances, in particular immersion lances, via which powdered or granular substances are introduced into the molten steel with the aid of a carrier gas.
  • T he powdered or granular products are introduced in metered quantities by means of an immersion lance and carrier gas, preferably argon into the melt.
  • the object of the present invention is to propose a device which is able to hold a diving lance in a simple manner and to prevent it from falling out, and which, if appropriate, allows an automatic change.
  • the device according to the invention is characterized by a pivotable gripper arm connected via a linkage to a drive, and a plug-in and sealing device loaded by springs, the gripper arm, the linkage and the drive, as well as the plug-in and sealing device on a common one Base plate are attached.
  • the drive consists of a hydraulically operated cylinder.
  • the linkage itself is designed to describe curves that cross an imaginary line during the dipping lance insertion or sealing process, whereby the diving lance is automatically locked by the spring assembly, even if the hydraulic pressure fails.
  • Another unit of the device according to the invention consists of a diving lance holder which is adapted to the holding device and which allows the diving lance to be changed without any problems and without manual intervention.
  • the immersion lance quiver comprises a quiver which is arranged centrally on a turntable and has the required holders for the immersion lances.
  • the quiver itself can be removed as a complete unit together with the diving lances attached to it with a crane and exchanged for another.
  • the rotary table has an upward-tapering royal column, which ensures that the quiver is automatically centered on the rotary table.
  • FIG. 1 shows an immersion lance 1 which, at its upper end, comprises a tube (2) which, at a certain distance from one another, has a pair of nozzles 3 and 4 offset by 180 °.
  • the nozzles 3 and 4 are preferably formed by round rods or thick-walled tubes, and are connected to the tube 2 in solidarity.
  • the tube 2 can be connected to the immersion lance 1 in various ways, for example by screwing or flange.
  • a seal 5 which in the preferred embodiment consists of soft material, for example an O-ring made of Viton.
  • an arm 6 of a lance quiver are clearly displayed, wherein the immersion lance 2 receives via the two to 180 0 staggered nozzles. 4
  • a holder 7 is attached which is connected to a guide device which e.g. in the aforementioned Patent 33090 of January 26, 1981.
  • a gripper 8 is rotatably mounted on the holder 7 via an axis 9.
  • the gripper 8 is moved about the axis 9 via a linkage 10 and 11 and a hydraulic cylinder 12.
  • the cylinder 12 and the linkage 10 and 11 are rotatably mounted on the bracket 7 via axes 13 and 14, respectively.
  • the linkage 10 and 11 is connected to one another via a further axis 15, the rod 11 being opposite to the axis 15 on its side set end is connected via an axis of rotation 17 to the piston rod of the cylinder 12 and the rod 10 is connected at its end opposite the axis 15 via a further axis 16 to the gripper 8.
  • the rod 11 can preferably also be designed as a triangle, as can be seen in FIGS. 1 a, 1 b, 1 c.
  • a sealing device 18 is attached to the holder 7, which essentially comprises a pneumatic delivery line 19 fastened by screwing, a collecting funnel 20 provided for the tube 2, a spring assembly 21, and a spherical support surface 22 of the tube 2.
  • FIGS. 1b and 1c The mode of operation of the device according to the invention can be seen from FIGS. 1b and 1c.
  • the piston rod of the cylinder (12) is extended. This movement is passed on to the gripper 8 via the linkage 10 and 11 and via the axes of rotation 14, 15, 16 and 17.
  • the gripper 8 turns about its axis 9 and engaged with the tube 2 via the two to 180 0 offset connector 3 in contact and lifts the tube 2 with the immersion lance 1 of the immersion lance support 6.
  • the tube 2 is on the seal 5 in contact with the support surface 22.
  • Another essential feature of the device according to the invention is that when the cylinder 12 is extended, the axis 15 crosses the imaginary line between the axes 14 and 16. This ensures that the dead center of the system is overcut, ie automatic self-locking of the gripper 8 is ensured.
  • the self-locking system can only be unlocked via the cylinder 12. This is of great advantage, since the cylinder 12 is only required for moving the gripper 8 and the sealing is carried out by the system as described above during the operation of the immersion lance 1.
  • the embodiment according to the invention is particularly advantageous if the cylinder 12 fails during blowing.
  • the gripper 8 on the other hand the supports 3 and 4 and the immersion lance holder 6 are designed in such a way that when the gripper 8 is open (FIG. 1 a) the immersion lance holder 6 rotates and when the gripper 8 is closed (FIG. 1 c) Moving the entire sealing device 18 with the immersion lance 1 is guaranteed.
  • FIG. 2 shows the side view of a preferred embodiment of a submersible lance quiver on a centrally arranged rotary table 23 which is rotated via an electric motor 24 and a gear 25.
  • the turntable 23 comprises a vertical, upwardly conical king column 26 for receiving the diving lance quiver.
  • the submersible lance holder mainly consists of a central tree 27 which understands a certain number of lance holders 6a, 6b, into which submersible lances la, lb are suspended via the connecting pieces 4a, 4b.
  • An eyelet 28 is also provided for receiving a crane hook (see FIG. 3). So that the diving lances la, lb remain in a vertical position during transportation, holders 29a, 29b are provided, into which the diving lances la, lb are inserted at their lower end.
  • the central tree 27 has a conical attachment 30, which automatically ensures centering together with the royal column 26.
  • the diving lance holder is rotated so that the diving lances la, lb are always brought into a certain position. In a preferred embodiment this can be done e.g. Limit switches can be reached. Furthermore, the rotation of the plate 23 can be achieved with the aid of a cylinder.
  • Figure 3 shows the entire immersion lance holder in the removed position, e.g. to replace used diving lances at a point away from the desulfurization system.
  • FIG 4 a plan view is schematically shown during the diving lance change. It can be seen here that the immersion lance holder 7, arranged rotatably on a bracket 33 via a holding arm 31, is moved in or out tangentially into the immersion lance holder 27. Furthermore, among other things, the steel pan 34 and the rigid piping 32 with swivel joints of the pneumatic transport can be seen.
  • a sliding quiver can also be used in which the lances are hung in rows next to each other.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Adornments (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Details (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
EP82100132A 1981-01-26 1982-01-11 Installation de fixation et de changement des lances immergées Expired EP0056942B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100132T ATE16024T1 (de) 1981-01-26 1982-01-11 Vorrichtung zur halterung und zum wechseln von tauchlanzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83089 1981-01-26
LU83089A LU83089A1 (de) 1981-01-26 1981-01-26 Vorrichtung und halterung zum wechseln von tauchlanzen

Publications (3)

Publication Number Publication Date
EP0056942A2 true EP0056942A2 (fr) 1982-08-04
EP0056942A3 EP0056942A3 (en) 1982-08-11
EP0056942B1 EP0056942B1 (fr) 1985-10-09

Family

ID=19729572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100132A Expired EP0056942B1 (fr) 1981-01-26 1982-01-11 Installation de fixation et de changement des lances immergées

Country Status (5)

Country Link
EP (1) EP0056942B1 (fr)
AT (1) ATE16024T1 (fr)
AU (1) AU546473B2 (fr)
DE (1) DE3266719D1 (fr)
LU (1) LU83089A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112540A1 (fr) * 1982-12-21 1984-07-04 Paul Wurth S.A. Installation pour le guidage et le changement des lances immergées
EP0223769A1 (fr) * 1985-11-21 1987-05-27 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Poste de poche pour le traitement du métal en fusion
FR2623892A1 (fr) * 1987-09-07 1989-06-02 Wurth Paul Sa Dispositif automatique d'echange de lances
WO1990005790A1 (fr) * 1988-11-16 1990-05-31 Paul Wurth S.A. Dispositif automatique d'echange de lance
EP0501172A1 (fr) * 1991-03-01 1992-09-02 Paul Wurth S.A. Mécanisme de commande pour un dispositif automatique d'échange de lance
AT404025B (de) * 1991-10-14 1998-07-27 Wurth Paul Sa Vorrichtung zum tragen und ankuppeln von lanzen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543836A1 (de) * 1985-12-12 1987-06-19 Clemens Karl Heinz Zwillingsblaslanzenanlage fuer metallurgische behandlungen mit integrierter messlanzenanlage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292691B (de) * 1960-08-31 1969-04-17 Salzgitter Huettenwerk Ag Einrichtung zum Auf- oder Einblasen von Gasen, vornehmlich von Sauerstoff, sowie vonGas-Feststoff-Gemischen auf oder in Metall-, insbesondere Eisenbaeder
US3664827A (en) * 1968-04-24 1972-05-23 Nippon Kokan Kk Method for refining molten iron or molten iron alloys
US3968956A (en) * 1974-11-14 1976-07-13 Mitsubishi Kinzoku Kogyo Kabushiki Kaisha Lancing apparatus with means for ready replacement or renewal of lances for top blown metallurgical furnaces
DE2454776B2 (de) * 1974-11-15 1976-09-02 Mannesmann AG, 4000 Düsseldorf Anlage zum einbringen von behandlungsmitteln in metallschmelzen
DE2738291A1 (de) * 1977-08-25 1979-03-08 Krupp Gmbh Einrichtung zum zufuehren von stoffen mittels einer oder mehrerer lanzen in elektrooefen
GB2021242A (en) * 1977-12-10 1979-11-28 Duport Steels Ltd Blowing Lance for Solid Materials
LU80692A1 (de) * 1978-12-21 1980-07-21 Arbed Verfahren und vorrichtung zum entschwefeln von eisenschmelzen

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112540A1 (fr) * 1982-12-21 1984-07-04 Paul Wurth S.A. Installation pour le guidage et le changement des lances immergées
EP0223769A1 (fr) * 1985-11-21 1987-05-27 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Poste de poche pour le traitement du métal en fusion
FR2623892A1 (fr) * 1987-09-07 1989-06-02 Wurth Paul Sa Dispositif automatique d'echange de lances
US4893791A (en) * 1987-09-07 1990-01-16 Paul Wurth S.A. Automatic lance changeover device
AU600855B2 (en) * 1987-09-07 1990-08-23 Paul Wurth S.A. Automatic lance changeover device
BE1002463A4 (fr) * 1987-09-07 1991-02-19 Wurth Paul Sa Dispositif automatique d'echange de lances.
AT399345B (de) * 1987-09-07 1995-04-25 Wurth Paul Sa Automatische lanzenwechselvorrichtung
WO1990005790A1 (fr) * 1988-11-16 1990-05-31 Paul Wurth S.A. Dispositif automatique d'echange de lance
AU614451B2 (en) * 1988-11-16 1991-08-29 Paul Wurth S.A. Automatic lance-exchanging device
EP0501172A1 (fr) * 1991-03-01 1992-09-02 Paul Wurth S.A. Mécanisme de commande pour un dispositif automatique d'échange de lance
AT404025B (de) * 1991-10-14 1998-07-27 Wurth Paul Sa Vorrichtung zum tragen und ankuppeln von lanzen

Also Published As

Publication number Publication date
ATE16024T1 (de) 1985-10-15
EP0056942A3 (en) 1982-08-11
LU83089A1 (de) 1981-06-04
DE3266719D1 (en) 1985-11-14
EP0056942B1 (fr) 1985-10-09
AU7929182A (en) 1982-08-05
AU546473B2 (en) 1985-09-05

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