EP0552440B1 - Blaslanzenaufhängung mit integrierter Medienversorgung - Google Patents

Blaslanzenaufhängung mit integrierter Medienversorgung 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
Authority
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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0552440A3 (cs
EP0552440A2 (de
Inventor
Hubert Stomp
André Kremer
Daniel Fries
Marc Reichert
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
Publication of EP0552440A2 publication Critical patent/EP0552440A2/de
Publication of EP0552440A3 publication Critical patent/EP0552440A3/xx
Application granted granted Critical
Publication of EP0552440B1 publication Critical patent/EP0552440B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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.

Landscapes

  • 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)
  • Nozzles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
EP92119975A 1992-01-24 1992-11-21 Blaslanzenaufhängung mit integrierter Medienversorgung Expired - Lifetime EP0552440B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU88057 1992-01-24
LU88057A LU88057A1 (de) 1992-01-24 1992-01-24 Blaslanzenaufhaengung mit kombinierter medienversorgung

Publications (3)

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

Family

ID=19731335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119975A Expired - Lifetime EP0552440B1 (de) 1992-01-24 1992-11-21 Blaslanzenaufhängung mit integrierter Medienversorgung

Country Status (15)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88808A1 (fr) * 1996-08-28 1998-03-02 Wurth Paul Sa Dispositif d'accouplement d'une lance de soufflage à un collecteur
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 (de) * 1968-03-29 1969-02-27 Demag Ag Blaslanzenvorrichtung fuer metallurgische oefen insbesondere fuer stahlwerkskonverter
LU69797A1 (cs) * 1974-04-05 1974-11-21
SU574474A1 (ru) * 1975-03-07 1977-09-30 Ждановский Ордена Ленина Завод Тяжелого Машиностроения Им. 50-Летия Великой Октябрьской Социалистической Революции Устройство дл установки гибких рукавов фурмы
DE2609564A1 (de) * 1976-03-08 1977-09-15 Siemens Ag Verfahren zum abscheiden von elementarem silicium aus der gasphase
LU86985A1 (de) * 1987-09-07 1989-04-06 Wurth Paul Sa Automatische lanzenwechselvorrichtung
DE59104180D1 (de) * 1990-02-01 1995-03-02 Voest Alpine Ind Anlagen Einrichtung zur Medienversorgung an einer Blaslanze.
LU87761A1 (fr) * 1990-07-04 1992-03-11 Wurth Paul Sa Dispositif d'accouplement automatique d'une lance d'insufflation a une tete de raccord

Also Published As

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

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