EP0004614B1 - Système de refroidissement pour un convertisseur d'acierie - Google Patents

Système de refroidissement pour un convertisseur d'acierie Download PDF

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Publication number
EP0004614B1
EP0004614B1 EP19790100888 EP79100888A EP0004614B1 EP 0004614 B1 EP0004614 B1 EP 0004614B1 EP 19790100888 EP19790100888 EP 19790100888 EP 79100888 A EP79100888 A EP 79100888A EP 0004614 B1 EP0004614 B1 EP 0004614B1
Authority
EP
European Patent Office
Prior art keywords
cooling
converter
cooling liquid
conduit
coolant
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
EP19790100888
Other languages
German (de)
English (en)
Other versions
EP0004614A1 (fr
Inventor
Alexander Dipl.-Ing. Patuzzi
Manfred Eysn
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.)
Voestalpine AG
Original Assignee
Voestalpine 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
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Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0004614A1 publication Critical patent/EP0004614A1/fr
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Classifications

    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • 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
    • C21C5/4646—Cooling arrangements

Definitions

  • the invention relates to a cooling system for a steelworks converter, with cooling chambers provided on the wall of the vessel and through which cooling liquid flows, in particular for a converter hat, on the circumference of which a plurality of cooling chambers through which the coolant flows and which extends in the surface line of the top surface is arranged Distributor or manifold sections running horizontally around the circumference of the converter hat are connected, these being connected to a coolant supply system with a supply line running through one or both support pins of the converter.
  • the invention aims to avoid these disadvantages and difficulties and has the object of creating a device on a cooling system of a steelworks converter, by means of which the cooling liquid can be removed from the cooling chambers within a very short period of time without the risk of steam formation and explosions.
  • the supply line of the cooling system can optionally be connected to a compressed gas line for the purpose of emptying the cooling liquid, monitoring and signaling devices for controlling the pressure and / or the temperature and / or the flow rate of the cooling liquid being contained in the system and If these signal devices deviate from a maximum or minimum target value of the monitored parameters of the coolant, actuatable control elements are provided for disconnecting the line from the coolant supply system and connecting this line to the compressed gas line.
  • a safety device for a water-cooled electrical stirrer winding of a melting furnace with water cooling in which a compressed air system is coupled to the cooling arrangement of the stirring winding, with the purpose of expelling the water from the cooling arrangement if the melt through Oven threatens to break through.
  • These stirring windings are spaced below the bottom of the furnace.
  • the cooling system of the melting furnace remains unaffected if the melt breaks through the furnace or if the supply to its cooling system fails.
  • FIG. 1 shows two steelwork converters in partial top view
  • FIG. 2 illustrates a side view of the converter hat of one of the two converters.
  • ring lines running horizontally at a distance from one another are laid, u. between the lower manifold 3 and the upper manifold 4.
  • These ring lines are divided into sections by partitions 5 and 6, so that manifold sections 3a, 3b, 3c ... and manifold sections 4a, 4b, 4c ... follow one another.
  • a plurality of channel-like cooling chambers 7 are arranged in groups, which likewise consist of channel-shaped profiles or angle irons and are welded to the outer surface of the converter hat.
  • Each such group 7 of cooling chambers is assigned a single reflux tube 8, which likewise consists of a channel-shaped profile which is welded to the hat surface and has a correspondingly larger cross section.
  • the arrangement of the return pipes is such that an upper manifold section 4a is connected to the next lower manifold section 3b by a return pipe 8.
  • a lower distributor line section 3a is connected to the coolant inlet 9 and the last discharge pipe 8 ′ is connected to the coolant outlet 10.
  • the coolant inlet 9 is connected to a feed line 11 which is guided through the support pin 12 of the converter 1, 1 '.
  • the coolant is supplied via the discharge line 14 to your coolant supply system, which is designated in its entirety by 15 and which, in addition to the pumps 16, is formed from the necessary pipelines and control valves, which are not described in more detail.
  • this coolant supply system 15 is designed as a closed system, the coolant, preferably treated cooling water, using the Pumps 16 are fed back to the feed line 11.
  • a plurality of signal devices 17, 18, 19 are installed in the supply and discharge lines 11, 14 of each converter 1, 1 ', of which the signal devices 17 for monitoring the temperature, the signal devices 18 for monitoring the flow rate and finally the signaling devices 19 are used to monitor the coolant pressure.
  • each derivation 14 of each converter 1, 1 ' there is further provided a control member designed as a valve 20, by means of which each derivation 14 can be separated from the coolant supply system 15 and connected to a compressed gas line 21, preferably a compressed air line.
  • each feed line 11 there is also a control element designed as a valve 22, which makes it possible to separate the feed line 11 from the coolant supply system 15 and to connect the feed line to an overflow 23.
  • the two valves 20, 22 can be actuated by the signal devices 17, 18, 19 via the control lines 24.
  • the cooling liquid supply system 15 like the compressed gas line 21, serves for the simultaneous supply of both converters 1, 1 '.
  • the cooling water conveyed by the pumps 16 first flows through the converter hat cooling of each converter 1, 1 ', then through the support ring and is then returned to the pumps 16 via the discharge line 14.
  • the valves 20, 22 of the respective Converter operated automatically via the control lines 24 in such a way that the valve 22 connects the feed line 11 with the overflow 23 and the valve 20 the discharge line 14 with the compressed gas line 21.
  • the invention is not limited to the embodiment shown in the drawing, but can be modified in various ways.
  • the cooling device formed by the ring lines and cooling chambers for the converter hat it is also possible to provide cooling chambers formed from plate cooling elements, or to form cooling chambers from meandering pipe coils guided around the crucible hat.
  • the cooling chambers of the converter hat also do not have to be connected in series, as in the exemplary embodiment shown, but they can also be connected to the cooling liquid supply system, each combined to form a plurality, each with its own supply and discharge lines. Furthermore, it is possible to let the compressed air flow through the cooling chambers in the direction of the flow of the cooling liquid.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Claims (2)

1. Système de refroidissement pour un convertisseur d'aciérie, avec, prévues sur la paroi du récipient, des chambres de refroidissement parcourues par un agent de refroidissement, en particulier pour un chapeau de convertisseur à la périphérie duquel est prévu un grand nombre de chambres de refroidissement parcourues par un agent de refroidissement et s'étendant dans le sens des génératrices de la surface du chapeau, ces chambres étant raccordées à des tronçons de conduits de distribution, respectivement collecteurs, s'étendant horizontalement au pourtour du chapeau du convertisseur, et ces chambres étant raccordées, par l'intermédiaire d'un conduit d'alimentation passant par un des tourillons porteurs ou par les deux tourillons porteurs du convertisseur, à un système d'alimentation en liquide de refroidissement, caractérisé en ce que le conduit d'alimentation (11, 14) du système de refroidissement peut être raccordé à volonté à un conduit de gaz sous pression (21) dans le but de le vider du liquide de refroidissement, le système comprenant des installations de surveillance, respectivement de signalisation (17, 18, 19) pour la commande de la pression et/ou de la température et/ou du débit du liquide de refroidissement, et où sont prévus des organes de commande (20, 22) actionnables par ces installations de signalisation lors d'une déviation, par rapport à une valeur de consigne maximale, respectivement minimale, des paramètres surveillés du liquide de refroidissement pour couper le conduit du système d'alimentation en liquide de refroidissement et pour raccorder ce conduit (11 ou 14) au conduit de gaz sous pression (21).
2. Système de refroidissement suivant la revendication 1, caractérisé en ce que plusieurs convertisseurs (1, 1') sont raccordés à un système commun (15) d'alimentation en liquide de refroidissement et à une source commune (21) de gaz sous pression.
EP19790100888 1978-04-04 1979-03-23 Système de refroidissement pour un convertisseur d'acierie Expired EP0004614B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2359/78 1978-04-04
AT235978A AT357582B (de) 1978-04-04 1978-04-04 Kuehlsystem fuer ein metallurgisches gefaess

Publications (2)

Publication Number Publication Date
EP0004614A1 EP0004614A1 (fr) 1979-10-17
EP0004614B1 true EP0004614B1 (fr) 1981-12-23

Family

ID=3532888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790100888 Expired EP0004614B1 (fr) 1978-04-04 1979-03-23 Système de refroidissement pour un convertisseur d'acierie

Country Status (3)

Country Link
EP (1) EP0004614B1 (fr)
AT (1) AT357582B (fr)
DE (1) DE2961590D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443188A (en) * 1981-05-20 1984-04-17 Bbc Brown, Boveri & Company, Ltd. Liquid cooling arrangement for industrial furnaces
DE3339135A1 (de) * 1983-10-28 1985-05-09 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Abstichrinne fuer einen schachtofen
US4899016A (en) * 1988-02-11 1990-02-06 Uop Purification process for organic feedstocks
DE19730250C1 (de) * 1997-07-08 1998-08-06 Mannesmann Ag Stahlwerkskonverter mit Hutkühlung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT171697B (de) * 1950-01-31 1952-06-25 Voest Ag Verfahren zur Überwachung und Durchführung von unter Anwendung von Düsen verlaufenden Vorgängen
AT337741B (de) * 1974-09-12 1977-07-11 Voest Ag Konverter mit einem konverterhut

Also Published As

Publication number Publication date
ATA235978A (de) 1979-12-15
EP0004614A1 (fr) 1979-10-17
DE2961590D1 (en) 1982-02-11
AT357582B (de) 1980-07-25

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