EP1602423B1 - Raccord pour l'accouplement d'une poche métallurgique aux conduits de gaz de traitement - Google Patents

Raccord pour l'accouplement d'une poche métallurgique aux conduits de gaz de traitement Download PDF

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Publication number
EP1602423B1
EP1602423B1 EP05090028A EP05090028A EP1602423B1 EP 1602423 B1 EP1602423 B1 EP 1602423B1 EP 05090028 A EP05090028 A EP 05090028A EP 05090028 A EP05090028 A EP 05090028A EP 1602423 B1 EP1602423 B1 EP 1602423B1
Authority
EP
European Patent Office
Prior art keywords
coupling
gas
coupling part
gas outlet
closing element
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.)
Not-in-force
Application number
EP05090028A
Other languages
German (de)
English (en)
Other versions
EP1602423A1 (fr
Inventor
Armin Burau
Matthias Dr. Weinberg
Andreas Koschinski
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.)
Vodafone GmbH
Original Assignee
Mannesmannroehren Werke AG
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 Mannesmannroehren Werke AG filed Critical Mannesmannroehren Werke AG
Publication of EP1602423A1 publication Critical patent/EP1602423A1/fr
Application granted granted Critical
Publication of EP1602423B1 publication Critical patent/EP1602423B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • C21C5/48—Bottoms or tuyéres of converters
    • 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

Definitions

  • the invention relates to a coupling for coupling a metallurgical vessel, in particular a steel ladle, to at least two spatially arranged gas purging lines of a ladle purging device according to the preamble of patent claim 1.
  • a coupling with a closing element designed as a spring-actuated valve is known, which allows the simultaneous coupling of the ladle to two different stationary gas flushing lines of a ladle rinsing device.
  • the essentially cylindrical coupling consists of a first (upper) coupling part arranged on the ladle and a second (lower) coupling part connected to the gas flushing lines.
  • the lower coupling part has in the head area a detachable for maintenance and repair purposes coupling head, in which a first central gas outlet is provided for a gas flow.
  • a second gas outlet opens into a plurality of circular outlets distributed around the central outlet.
  • the upper coupling part has complementary to the gas outlets of the lower coupling part formed and connectable thereto gas inlets, being arranged around the contact points between the outputs and inlets a ring seal, which is intended to prevent escape of or mixing of the gas in the coupled state.
  • the gas outlets on the coupling head are connected via gas outlet ducts sealed against each other with gas flushing pipes, which in turn are connected to a gas supply.
  • the mutual sealing of the gas outlet channels is important in order to avoid “short circuits" in the gas flow, which would disturb the rinsing process in the ladle.
  • the valve in the region of the second (lateral) gas outlet, the valve is provided with a plurality of elastic sealing elements for sealing to the central outlet and to the outside.
  • the spring-actuated valve is designed as a tandem valve with a double cone seat for opening or closing the gas supply from the two Gas Jardin effeten in the gas outlets.
  • the valve is designed to simultaneously open the gas outlets through the tandem valve so that the gas can flow under high pressure from the gas purge lines through the gas exhaust ports through the gas outlets of the coupling head in the lower coupling part to the gas inlets of the upper coupling part ,
  • a high gas pressure is required to overcome the ferrostatic pressure of the liquid column in the steel ladle.
  • the object of the invention is to provide a coupling for coupling a metallurgical vessel, in particular a Stahlg screenpfanne, which is simpler and less expensive in construction and less susceptible to wear.
  • At least one closing element in a gas outlet and at least one other closing element outside the second coupling part are arranged in the proposed coupling in the second coupling part at least in the part of the gas supply, which is connected to the permanently open gas outlet or gas outlets.
  • the closing element is advantageously designed as a spring-actuated valve, which is arranged only in the central outlet channel of the lower coupling part, wherein the other outlet channel remains permanently open.
  • the release or blocking of the gas supply to the permanently open outlet channel is regulated by the arrangement of a further closing element outside the lower coupling part in the gas supply to the lower coupling part.
  • a major advantage of this coupling is that now can be dispensed with a laboriously manufactured spring-operated tandem valve with double-cone seat and only for the first central gas outlet a no further seals exhibiting valve is needed.
  • the coupling is thus much simpler and cheaper to build, with a significant increase in the service life is advantageously achieved by reducing the wearing parts in the clutch beyond.
  • the closing element is arranged separately from the clutch only in the gas supply to the lower coupling part, which simultaneously releases or closes the gas flow to the gas flushing lines.
  • the closing element can be arranged both in the gas supply of each gas purging line, but it is also possible with only one closing element in a common gas supply to release all gas purging simultaneously or close.
  • the closing element for the gas supply in the gas supply to the clutch is arranged, so that the time for opening or closing the gas supply in advantageous manner can be chosen freely.
  • the gas flow is released only when the coupling process is completed, ie the sealing contacting of the coupling parts has taken place.
  • a brief opening of the gas supply before coupling for example, always be useful if there is a risk that in the open gas outlet ducts penetrating dirt could lead to blockages. Due to the short-term gas emission, the outlet channels are blown freely, so that a trouble-free gas flow through the coupling into the steel ladle can be ensured.
  • This improved coupling is characterized by a further significant reduction in the number of parts with a corresponding cost reduction compared to the coupling with a closing element in the lower coupling part, whereby by avoiding possible damage from the gas flow prior to contacting the coupling parts, the reliability is simultaneously increased significantly.
  • FIG. 1 shows a detail of a vertical section through an inventive substantially cylindrically shaped coupling for coupling a steel ladle to at least two stationary arranged gas purging a Pfannen Hughes gear, wherein the two coupling parts are shown in a non-coupled position.
  • coupling which has only one valve in the lower coupling part.
  • the lower coupling part 2 is fixedly arranged in the recording device for the ladle, also not shown, that by a vertical lowering movement of the ladle into the receiving device, the coupling parts 1, 2 moved towards each other and can be automatically coupled together in the correct position.
  • the upper coupling part 1 is recessed trough-shaped in the coupling region and the lower coupling part 2 complementary to essentially conical, so that on the resulting positive guidance, the coupling parts 1, 2 automatically align even in inaccurate alignment to the correct position to each other.
  • the upper coupling part 1 has a central gas inlet channel 12 and an annular gas inlet channel 13 arranged around the gas inlet channel 12, which opens into a plurality of partial inlets 16 in the coupling region.
  • the lower coupling part 2 has a complementary to the trough-shaped coupling portion of the upper coupling part 1 substantially conical coupling head 11, with in the coupling region to the gas inlet channels 12, 13 connectable gas outlets 5, 6, sealingly arranged in the coupling region seals 7, 7 'with each other are connected.
  • the coupling head 11 is detachably connected to the lower coupling part 2 for maintenance purposes with screws 17 and seals 8, 8 'provided in the connection area.
  • the central gas outlet 5 is connected via the gas outlet channel 4 with the Gas Jardintechnisch 10 and the partial outlets 6 via the gas outlet channel 4 'with the Gas Meeting effet 10'.
  • the coupling head 11 only has one in the central gas outlet 5 arranged with a spring 9 during the coupling operation to be actuated valve 3, which in the unopened state via a conical seat in the coupling head 11, the central gas outlet 5 to the gas outlet channel 4 and the gas purging 10 seals.
  • the further gas outlet 6 is now permanently open without a valve.
  • the gas outlet channels 4, 4 ' are gas-tightly separated from one another by means of a weld seam 15 via a sealing plug 14 arranged in the former valve region, so that the gas streams are permanently separated from one another.
  • the lower coupling part 2 can be designed with the elimination of a valve from the outset with completely separate gas outlet channels 4, 4 ', whereby the welding of a sealing plug 14 is omitted.
  • the axially movable valve 3 is arranged in the central gas outlet 5 and protrudes in the non-coupled state beyond the contour of the coupling head 11, so that when the axial movement of the coupling parts 1, 2, the valve 3 opens before the sealing contact of the coupling parts 1, 2 ,
  • the purge gas can flow via the gas purge line 10 through the gas outlet channel 4 into the central gas outlet 5.
  • the common gas supply is opened via a further outside the coupling part 2 in the gas supply of the gas flushing lines 4, 4 'arranged closing element, so that the purge gas through the Gas Jardintechnisch 10, 10' through the gas outlet channel 4, 4 'to the central gas outlet. 5 and can flow to the Operaauslässen 6 in the coupling head 11.
  • valve 3 When uncoupling the spring 9 of the valve 3 is relieved again, the valve 3 closes the central gas outlet 5 in the coupling head 11 again, at the same time the gas supply to the gas outlets via the closing element in the gas supply is closed again.
  • FIG 2 a coupling according to the invention is shown, which does not require valve in the lower coupling part and thus very inexpensive to manufacture and also wear and thus low maintenance.
  • the outer structure of the coupling is substantially identical to the representation in Figure 1 , so that a detailed description is omitted.
  • the closing element for the gas flow is now arranged separately from the clutch only in the gas supply to the lower coupling part 2, which simultaneously releases or closes the gas flow to the gas purging 10, 10 '.
  • the closing element can be arranged both in the gas supply of each gas purging line 10, 10 ', but it is also possible with only one closing element in a common gas supply all Gas Skype utilizaten 10, 10' simultaneously release or close.

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)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Lift Valve (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (6)

  1. Raccord pour l'accouplement d'un récipient métallurgique, en particulier d'une poche de fusion d'acier, à au moins deux conduites de lavage au gaz, disposées de façon fixe et raccordées à une arrivée de gaz, d'un dispositif de lavage de poche, comprenant une première partie de raccord fixée sur le récipient métallurgique et conçue en forme de cavité dans la zone d'accouplement avec au moins deux conduits d'entrée de gaz et une seconde partie de raccord raccordée aux conduites de lavage au gaz et réalisée dans la zone d'accouplement de façon complémentaire à la cavité de la première partie de raccord avec au moins deux conduits de sortie de gaz pouvant être raccordés aux conduits d'entrée de gaz de la première partie de raccord et pouvant être rendus étanches l'un par rapport à l'autre, un conduit de sortie de gaz débouchant de façon centrale dans la zone d'accouplement dans un conduit de sortie de gaz et un autre conduit de sortie de gaz débouchant dans des sorties partielles disposées en forme de cercle autour du conduit central et au moins un élément de fermeture, qui régule la libération ou le blocage du flux de gaz, étant disposé dans le dispositif de lavage de poche, caractérisé en ce que dans la seconde partie de raccord (2) est disposé au maximum un élément de fermeture de raccord dans une sortie de gaz (5, 6) et au moins un autre élément de fermeture est disposé à l'extérieur de la partie de raccord (2) au moins dans la partie de l'arrivée de gaz, qui est reliée à la sortie de gaz ouverte en permanence ou aux sorties de gaz.
  2. Raccord selon la revendication 1, caractérisé en ce que seule la sortie de gaz (5) centrale de la seconde partie de raccord (2) est dotée d'un élément de fermeture.
  3. Raccord selon les revendications 1 et 2, caractérisé en ce que l'élément de fermeture est réalisé dans la partie de raccord (2) sous la forme de vanne (3).
  4. Raccord selon la revendication 2, caractérisé en ce que la vanne (3) est conçue comme une vanne sollicitée avec un ressort (9).
  5. Raccord selon la revendication 1, caractérisé en ce que un élément de fermeture est disposé seulement dans l'arrivée de gaz des conduits de lavage de gaz (10, 10') à l'extérieur de la partie de raccord (2).
  6. Procédé pour l'accouplement d'un récipient métallurgique à au moins deux conduites de lavage au gaz disposées de façon fixe avec un raccord selon la revendication 5, la première partie de raccord (1) et la seconde partie de raccord (2) étant déplacées l'une vers l'autre et les transitions entre les conduits de sortie de gaz étant rendues étanches lors de l'assemblage et l'arrivée de gaz de lavage étant libérée par l'actionnement de l'élément de fermeture dans l'état couplé, caractérisé en ce que, avant l'accouplement, les sorties de gaz (5, 6) ouvertes ou les conduits de sortie de gaz (4, 4') sont libérés par soufflage après l'ouverture partielle et de courte durée de l'arrivée de gaz et l'arrivée de gaz de lavage est complètement ouverte après l'accouplement.
EP05090028A 2004-06-02 2005-02-11 Raccord pour l'accouplement d'une poche métallurgique aux conduits de gaz de traitement Not-in-force EP1602423B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004027531 2004-06-02
DE102004027531A DE102004027531B3 (de) 2004-06-02 2004-06-02 Kupplung zum Ankuppeln eines metallurgischen Gefäßes an Gasspülleitungen

Publications (2)

Publication Number Publication Date
EP1602423A1 EP1602423A1 (fr) 2005-12-07
EP1602423B1 true EP1602423B1 (fr) 2007-03-28

Family

ID=34559897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05090028A Not-in-force EP1602423B1 (fr) 2004-06-02 2005-02-11 Raccord pour l'accouplement d'une poche métallurgique aux conduits de gaz de traitement

Country Status (3)

Country Link
EP (1) EP1602423B1 (fr)
AT (1) ATE357984T1 (fr)
DE (2) DE102004027531B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101100727B1 (ko) * 2009-11-30 2011-12-29 주식회사 우진 용선예비처리 설비의 오토 커플러 장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831647C2 (de) * 1978-07-19 1980-02-21 Mannesmann Demag Ag, 4100 Duisburg Kupplung zum Anschließen von Versorgungsgasleitungen an metallurgischen Gefäßen
LU87082A1 (fr) * 1987-12-18 1989-07-07 Wurth Paul Sa Dispositif d'accouplement d'une poche metallurgique a un reseau de gaz
LU87868A1 (fr) * 1990-12-21 1992-08-25 Wurth Paul Sa Raccord rapide double flux pour l'accouplement automatique et simultane d'une poche metallurgique a deux reseaux de gaz differents
LU88595A1 (de) * 1995-03-03 1996-10-04 Wurth Paul Sa Vorrichtung zum automatischen Ankuppeln einer Giesspfanne an eine oder mehrere Gasleitungen
LU88594A1 (de) * 1995-03-03 1996-10-04 Wurth Paul Sa Vorrichtung zum automatischen Ankuppeln einer Giesspfanne an eine oder mehrere Gasleitungen

Also Published As

Publication number Publication date
ATE357984T1 (de) 2007-04-15
DE102004027531B3 (de) 2005-06-09
DE502005000516D1 (de) 2007-05-10
EP1602423A1 (fr) 2005-12-07

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