EP0007038B1 - Dispositif pour l'accouplement de tuyaux d'alimentation de gaz à des récipients métallurgiques - Google Patents

Dispositif pour l'accouplement de tuyaux d'alimentation de gaz à des récipients métallurgiques Download PDF

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Publication number
EP0007038B1
EP0007038B1 EP19790102148 EP79102148A EP0007038B1 EP 0007038 B1 EP0007038 B1 EP 0007038B1 EP 19790102148 EP19790102148 EP 19790102148 EP 79102148 A EP79102148 A EP 79102148A EP 0007038 B1 EP0007038 B1 EP 0007038B1
Authority
EP
European Patent Office
Prior art keywords
coupling
actuator
valve
characteristic feature
gas supply
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
Application number
EP19790102148
Other languages
German (de)
English (en)
Other versions
EP0007038A1 (fr
Inventor
Wilhelm Blum
Heinz Dolge
Hubert Franzkowiak
Herber Meyer
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.)
Mannesmann Demag AG
Original Assignee
Mannesmann Demag 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 Mannesmann Demag AG filed Critical Mannesmann Demag AG
Publication of EP0007038A1 publication Critical patent/EP0007038A1/fr
Application granted granted Critical
Publication of EP0007038B1 publication Critical patent/EP0007038B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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

  • a gas is blown into the metallurgical vessel, such as e.g. B. Argon in the homogenization of the molten steel in steel pans.
  • the couplings that connect the treatment gas supply gas line to the vessel must function quickly and safely.
  • the pan can be placed either in a stationary stand or on a trolley, stored in its cones. Turbulence during the flushing process, loosening of frictional engagement due to vibrations or - in the case of a pan placed on a trolley - due to driving impacts, etc., slight oscillations are possible, which the clutch must compensate for.
  • the position of a coupling connection from pan to pan is also not exact.
  • a coupling for blow lances and the like is known for use in steel aftertreatment in pans or similar metallurgical measures (DE-CZ-25 02 977).
  • a lever is arranged in a frame, the lever having a fork-shaped ball socket at one end and a swivel joint at the other end.
  • the clutch also has a pressure cylinder arranged on the frame, which is connected to the pivot joint of the lever.
  • a connection plate for the blowing lance is also arranged on the frame and has a sealing cone. This cone interacts with the conical sealing head of the blowing lance.
  • the object of the invention is to provide a clutch of the type mentioned, the pressure cylinder of which is driven with the treatment medium, both the clutch or disengagement process and the opening or closing of the gas supply being triggered by a single operation.
  • the coupling according to the invention has the particular advantage that the supplied supply gas simultaneously forms the working medium for the coupling process. Both the activation of the clutch and the opening of the gas duct are achieved by just one actuation process. It is the same when the clutch and gas supply are switched off. Thanks to the quasi-cardanic suspension of the movable coupling part, the coupling can be spatially adapted to the coupling part located on the socket, so that a reliable function of the coupling is ensured.
  • a pressure cylinder 1 is connected to the frame 19 of a ladle truck (or a stationary stand).
  • a movable coupling part 4 is provided which interacts with a corresponding coupling part 5 to be described later.
  • the piston 2, which divides the cylinder space into a drive-side chamber 1 a and an output-side chamber 1 b, the two chambers having variable volumes, is pressed against the cylinder bottom in the starting position of the pressure cylinder 1 by a preloaded coil spring 10.
  • FIG. 1 also shows a control station 14 which is provided behind the inert gas source 6.
  • the steering position can e.g. B. can be combined with a control station for the ladle car.
  • the control station 14 contains a 3/2-way valve 28 which is actuated mechanically against the return spring in the example shown.
  • the valve 28 is the only switching element to be operated for the coupling device and at the same time for opening or turning off the gas supply.
  • the valve is connected via a pipeline 11 to a hose drum 18 with a rotating union.
  • the hose line 11a leads via a quick coupling 16a into a control part 21 which is fixedly arranged on the frame of the carriage.
  • the control part will be explained later in the description of FIG. 3.
  • the line 11b and a branched hose line 12 are led out and connected to the coupling device via quick couplings 16b, specifically the line 11b near the bottom of the pressure cylinder 1 on the drive-side chamber 1a and the line 12 on one in the movable one Coupling part 4 arranged channel 22.
  • the second coupling part 5 is firmly connected to the pan 27.
  • a corresponding channel 24 is arranged in the coupling part 5 and is connected to a sink 26 via a flexible line 25.
  • the channel 22 opens out in the region of a coupling chamber 31 sealed by a sealing ring 23. This area must be kept so large that all position differences for connecting the channel 24 to the coupling part are compensated.
  • FIG. 2 shows how the movable coupling part 4 is articulated on the piston rod is connected, namely via a spherical bearing 7.
  • the coupling part is held in the basic position by means of springs 8 which are supported on a plate 9 which is fixedly connected to the piston rod 3 and is arranged perpendicular to the piston rod.
  • the spring 10 is supported between the inside of the cylinder cover 30 and the piston rear.
  • the pressure cylinder 1 is connected to the frame 19 of a ladle car or a stationary stand via a joint 20.
  • the control part (Fig. 3) is housed in the example shown in a box attached to the frame of the ladle truck.
  • a 3/2-way valve 29 is arranged in the supply gas line 11 and serves as a safety circuit in order to be able to manually switch off the gas supply directly on the car in an emergency.
  • the line branches into the line 11b and the line 12.
  • the line 11b is connected to the drive-side chamber of the cylinder space 1 via a shuttle valve 13.
  • the shuttle valve 13 serves as a quick release valve after the rinsing process has ended - as will be explained in more detail later.
  • a preloaded check valve 15 is installed in the line 12 leading to the movable coupling part 4.
  • the amount of preload is matched to the needs of the washing process and is 6 bar in the example shown.
  • the check valve 15 can also be arranged in the movable coupling part 4.
  • valve 15 opens, and the gas passes through channels 22, 24 and line 25 via the sink 26 into the pan 27.
  • the cylinder 1 must be dimensioned so that both the pressure in the clutch chamber 31 and the pressure caused by the force of the spring 10 are overcome.
  • valve 28 in the control station 14 is switched off.
  • the cylinder 1 and the entire line system are relaxed, and the piston 2 returns to its starting position due to the action of the compression spring 10, displacing the remaining amount of gas from the chamber 1a into the line 11b.
  • the gas is discharged through the shuttle valve 13 functioning as a quick exhaust valve.
  • the 3/2-way valve 28 the line 11, the hose drum 18 and the quick coupling 16a can be omitted.
  • the inert gas source 6 is connected directly to the 3/2-way valve 29 of the control part 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (7)

1. Accouplement pour le raccordement de conduites de gaz d'alimentation à des cuves métallurgiques, en particulier des poches pour acier liquide, avec un élément d'accouplement disposé de façon fixe à la cuve ainsi qu'avec un deuxième élément d'accouplement mobile concourant avec le premier et pouvant être actionné par un vérin actionné par gaz, un espace étanche se présentant entre les deux éléments d'accouplement lorsque l'accouplement est fermé et dans le dit espace débouchent les conduites de gaz disposées dans les deux éléments d'accouplement, caractérisé par ce que, la source de gaz d'alimentation (6) peut d'une part être reliée de façon à pouvoir être enclenchée et déclenchée, d'une part par une conduite (12), par l'intermédiaire d'une soupape d'arrêt précontrainte (15) avec l'élément d'accouplement mobile (4) raccordé à l'extrémité libre de la tige de piston (3) dépassant du vérin actionné par gaz (1) et d'autre part par une deuxième conduite (11 b), par l'intermédiaire d'une vanne d'arrêt (13) avec la chambre (1a) côté entraînement du vérin actionné par gaz (1), le vérin actionné par gaz (1) étant dimensionné de sorte que la pression préindiquée par la précontrainte de la soupape d'arrêt (15) surmonte aussi bien la pression existant dans la chambre d'accouplement (31) lorsque l'accouplement est fermé (4, 5) que la force d'un ressort (10) agissant dans le sens contraire à la course de travail du piston (2).
2. Accouplement suivant revendication 1, caractérisé par ce que, la soupape d'arrêt (15) montée dans la conduite (12) allant de la source d'alimentation (6) à l'élément d'accouplement mobile (4) est un clapet anti-retour précontraint.
3. Accouplement suivant les revendications 1 et 2, caractérisé par ce que, le clapet anti-retour précontraint (15) est disposé dans l'élément d'accouplement mobile.
4. Accouplement suivant les revendications 1 à 3, caractérisé par ce que, la soupape à deux voies (13) raccordée à l'extrémité côté entraînement du vérin actionné par gaz (1) sert de dispositif de relaxation rapide.
5. Accouplement suivant les revendications 1 à 4, caractérisé par ce que, l'élément d'accouplement mobile (4) à la tige de piston (3) est raccordé par l'intermédiaire d'une articulation à rotule (7) et est maintenu en position initiale au moyen de ressorts (8) s'appuyant sur une plaque (9) reliée de façon fixe à la tige de piston (3) et disposée verticalement par rapport à la tige de piston.
6. Accouplement suivant les revendications 1 à 5, caractérisé par ce que, le ressort (10) est supporté entre le couvercle de vérin (30) et le piston (2).
7. Accouplement suivant les revendications 1 à 6, caractérisé par ce que, le vérin actionné par gaz (1) est relié au châssis (19) d'un chariot porte-poches ou d'un support stationnaire par l'intermédiaire d'une articulation (20).
EP19790102148 1978-07-19 1979-06-28 Dispositif pour l'accouplement de tuyaux d'alimentation de gaz à des récipients métallurgiques Expired EP0007038B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2831647 1978-07-19
DE19782831647 DE2831647C2 (de) 1978-07-19 1978-07-19 Kupplung zum Anschließen von Versorgungsgasleitungen an metallurgischen Gefäßen

Publications (2)

Publication Number Publication Date
EP0007038A1 EP0007038A1 (fr) 1980-01-23
EP0007038B1 true EP0007038B1 (fr) 1981-06-10

Family

ID=6044745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790102148 Expired EP0007038B1 (fr) 1978-07-19 1979-06-28 Dispositif pour l'accouplement de tuyaux d'alimentation de gaz à des récipients métallurgiques

Country Status (3)

Country Link
EP (1) EP0007038B1 (fr)
DE (1) DE2831647C2 (fr)
ES (1) ES8100933A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383293B (de) * 1985-07-16 1987-06-10 Stangl Kurt Dipl Ing Vorrichtung zum anschliessen von steuer- und versorgungsleitungen an eine giesspfanne
LU87082A1 (fr) * 1987-12-18 1989-07-07 Wurth Paul Sa Dispositif d'accouplement d'une poche metallurgique a un reseau de gaz
FR2667126B1 (fr) * 1990-09-26 1993-03-26 Unimetall Sa Dispositif de raccordement a positionnement automatique.
LU88014A1 (fr) * 1991-10-09 1993-05-17 Wurth Paul Sa Dispositif d'accouplement automatique entre des conduites sur une station de traitement et une poche métallurgique
FR2694511A1 (fr) * 1992-08-05 1994-02-11 Lorraine Laminage Dispositif de raccordement automatique sur un circuit d'alimentation fixe d'un circuit de fluide gazeux d'une poche de métal liquide.
DE102004027531B3 (de) * 2004-06-02 2005-06-09 Mannesmannröhren-Werke Ag Kupplung zum Ankuppeln eines metallurgischen Gefäßes an Gasspülleitungen
CN102051446B (zh) * 2011-01-25 2013-01-02 吉林建龙钢铁有限责任公司 电磁式吹氩装置自动连接器
CN111306383B (zh) * 2020-03-30 2024-03-12 无锡巨力重工股份有限公司 钢水罐的氩气管路对接结构
CN111593171A (zh) * 2020-06-19 2020-08-28 武汉钢铁有限公司 水平横移式钢包全自动接氩系统及其控制方法
CN114087442A (zh) * 2021-12-04 2022-02-25 无锡巨力重工股份有限公司 一种自调节吹氩接头

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855293A (en) * 1955-03-21 1958-10-07 Air Liquide Method and apparatus for treating molten metal with oxygen
DE1275557B (de) * 1959-11-25 1968-08-22 Salzgitter Huettenwerk Ag Vorrichtung zum Auf- oder Einblasen von Gasen, vornehmlich von Sauerstoff, sowie vonGas-Feststoff-Gemischen auf oder in Metall-, insbesondere Eisenbaeder
AT339356B (de) * 1975-02-25 1977-10-10 Voest Ag Vorrichtung zum spulen von stahl

Also Published As

Publication number Publication date
EP0007038A1 (fr) 1980-01-23
ES483243A0 (es) 1980-12-16
ES8100933A1 (es) 1980-12-16
DE2831647C2 (de) 1980-02-21
DE2831647B1 (de) 1979-06-21

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