EP0011610B1 - Kippbarer Konverter - Google Patents

Kippbarer Konverter Download PDF

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Publication number
EP0011610B1
EP0011610B1 EP79890046A EP79890046A EP0011610B1 EP 0011610 B1 EP0011610 B1 EP 0011610B1 EP 79890046 A EP79890046 A EP 79890046A EP 79890046 A EP79890046 A EP 79890046A EP 0011610 B1 EP0011610 B1 EP 0011610B1
Authority
EP
European Patent Office
Prior art keywords
converter
piston
carrying body
lug
vessel
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
EP79890046A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0011610A1 (de
Inventor
Bernhard Dipl.-Ing. Enkner
Rupert Berger
Manfred Eysn
Hermann Franz Haslehner
Helmut Smejkal
Michael Sattler
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
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0011610A1 publication Critical patent/EP0011610A1/de
Application granted granted Critical
Publication of EP0011610B1 publication Critical patent/EP0011610B1/de
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
    • C21C5/4633—Supporting means

Definitions

  • the invention relates to a tiltable converter, the converter vessel of which is supported by pairs of claws which support bearing forces on a hollow support body arranged around its jacket, the claws of a pair of claws lying opposite one another on both sides of the support body and a piston-cylinder unit being provided between a claw of each pair of claws and the support body whose piston is hydraulically adjustable in the longitudinal direction of the converter vessel.
  • a tiltable converter of the type described in the opening paragraph is known from US-A-3,400,922.
  • this converter only one of the two opposite claws of each pair of claws is supported against the support ring by means of a piston-cylinder unit.
  • Each piston-cylinder unit is connected to a pressurized expansion tank provided outside the support ring by means of hydraulic lines. Like the hydraulic lines, this expansion tank must be able to absorb the full pressure transmitted from the converter to the piston-cylinder units, which reduces operational safety.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a converter, in particular a large converter, in which the inevitable play between the support claws and the support ring can be as large as desired, but this game does not cause any shocks when the converter is tilted and no forces are caused by the construction of the suspension of the converter vessel in the support ring, which additionally load the converter vessel or the support ring.
  • each piston-cylinder unit are each connected to an expansion tank provided within the supporting body, in which the hydraulic medium is under pressure, by means of a hydraulic line, each of which has a check valve which can be optionally switched in and out of function is installed, which in function allows the inflow of hydraulic fluid only in the direction from the expansion tank into the cylinder and disables the hydraulic line in both directions.
  • a hydraulic line each of which has a check valve which can be optionally switched in and out of function is installed, which in function allows the inflow of hydraulic fluid only in the direction from the expansion tank into the cylinder and disables the hydraulic line in both directions.
  • a pulse generator is advantageously provided for switching the check valve, with which the check valve can be switched off when the converter is in an upright position and when the converter begins to tilt.
  • the invention further relates to a tiltable converter, the converter vessel of which is supported by means of support pairs of claws supported on a hollow support body arranged around its jacket, the claws of a pair of claws lying opposite one another on both sides of the support body, and piston-cylinder units being provided between the two claws of each pair of claws and the support body whose pistons are hydraulically adjustable in the longitudinal direction of the converter vessel.
  • a converter of this type is known from DE-A- 1,433,498. In this converter, both opposite claws of the pairs of claws are supported against the support ring by means of piston-cylinder units.
  • the known converter is a "pendulum or swing converter", that is to say a converter which is made to oscillate or swing during the blowing process.
  • the support ring is fixed in relation to the foundation, and the converter is moved by means of pressure medium cylinders provided between the claws and the support ring. These must therefore take up the entire load of the converter during converter operation.
  • each piston-cylinder unit is each connected to an expansion tank provided within the support body, in which the hydraulic medium is under pressure, by means of a hydraulic line, in each of which a throttle valve is installed.
  • the converter sits u. between both in an upright position and in a position pivoted through 180 °, namely on the piston of the piston-cylinder units located on the upper side of the support ring; however, the pistons are in the position pushed back as far as the stop due to the built-in throttle valves between the expansion tanks and the piston-cylinder units, so that the entire hydraulic device for load bearing is not stressed.
  • the hydraulic device is used for weight support only during the time of the tipping and a short period afterwards, which the hydraulic medium needs to flow through the throttle into the expansion tank.
  • the expansion tank is always pressurized and thus the hydraulic medium. It does not need to be able to absorb a pressure caused by the converter weight. It therefore contributes significantly to operational safety and can be designed to be correspondingly weaker than the piston-cylinder units.
  • a spring-loaded displacement piston is expediently provided in the expansion tank.
  • a further preferred embodiment is characterized in that, in addition to the piston-cylinder units provided in the longitudinal direction of the converter vessel, at least one claw of a pair of claws has support surfaces running parallel to the longitudinal direction of the converter vessel, which are each supported on counter support surfaces arranged on the support body, at least one support or Counter support surface is formed by a piston of a hydraulically actuated piston-cylinder unit arranged parallel to the extension of the support body.
  • Both support or counter support surfaces are advantageously each formed by a piston of a piston-cylinder unit, the cylinder of each piston-cylinder unit being connected to an expansion tank via a hydraulic line, in which a throttle valve is installed.
  • FIG. 1 a partially sectioned side view of a converter in the direction of the trunnion axis
  • FIG. 2 a view in the direction of arrow 11 of FIG. 1
  • FIG. 3 a detail of FIG 1 show on an enlarged scale.
  • FIG. 4 illustrates the use of the embodiment shown in FIGS. 1 to 3 for supporting the support surfaces running parallel to the longitudinal direction of the converter vessel.
  • FIGS. 5 to 7 A further embodiment is shown in FIGS. 5 to 7, with FIG. 5 a converter in a representation analogous to FIG. 1, FIG. 6 a detail of FIG. 5 on an enlarged scale and FIG. 7 also the application of the in FIGS 5 and 6 show the embodiment shown for the support surfaces running parallel to the longitudinal direction of the converter vessel.
  • the support ring 2 is tiltably supported by two supporting pins 3 which are in alignment with one another in support bearings (not shown).
  • the converter vessel 1 is suspended in the support ring 2 by means of two pairs of support claws 5, 6 and 7, 8, which are arranged in the support pin 3.
  • a further pair of claws 9, 10 - the tilting claw pair - is arranged in a plane perpendicular to the support pins 3.
  • These three pairs of claws are expediently designed to be identical to one another. For design reasons, they are each designed as a pair of double claws.
  • a guide device 11 is arranged diametrically opposite the pair of tilting claws 9, 10, which is designed in a known manner only to absorb lateral forces and does not rest on the support ring 2.
  • Each of the claws 5 to 10 is formed from an upper flange 12 welded to the converter vessel, a lower flange 13 welded to the converter vessel 1, and ribs 14 located therebetween, also welded to the converter vessel.
  • the lower flange 13 of the claws each has two forces which occur in the longitudinal direction 15 of the converter vessel, bearing surfaces 16 which transmit them, and between these bearing surfaces parallel to the longitudinal direction 15 of the converter vessel, support surfaces 17, the forces directed in the circumferential direction of the support ring 2 on the counter support surfaces 18 which are attached to the support ring 2, transferred.
  • the distance 19 between the opposing bearing surfaces 16 of a pair of claws is chosen to be greater than the height 20 of the support ring 2 located between them.
  • piston rings Cylinder units 22 are mounted, the axes 23 of which are arranged approximately parallel to the longitudinal direction 15 of the converter 1.
  • the cylinder 24 of each piston-cylinder unit 22 is embedded in the underside belt 25 of the support ring 2 and is connected by means of a hydraulic line 26 to an expansion tank 27 arranged within the support ring.
  • a check valve 28 which can be optionally switched into function and out of function is installed in the hydraulic line, which functionally allows the inflow of hydraulic medium only in the direction from the expansion tank 27 into the cylinder 24 and, in addition, releases the hydraulic line 26 in both directions.
  • the function of the device is as follows: the converter, when it is in the upright position (0 ° position), only rests on the support ring 2 with its claws 5, 7, 9 arranged above the support ring 2. Hydraulic fluid is pressed into the cylinders 24 by the displacement pistons 29, whereby the pistons 30 of the piston-cylinder units 22 are pressed outwards until they rest on the contact surfaces 16 of the claws 6, 8, 10 arranged on the underside 21 of the support ring 2. The check valves 28 prevent the pistons 30 from being pushed back when they are in operation.
  • the check valves 28 are deactivated when the converter is in the 0 ° position.
  • the check valves 28 are expediently only switched into function when tilting and, after the tilting has ended (in the 0 ° position of the converter), switched off, so that shocks and impacts cannot occur during the tilting.
  • FIG. 4 illustrates the use of the principle shown in FIG. 3 for the support surfaces 17 running parallel to the longitudinal direction of the converter vessel, parts which correspond to one another being provided with the same reference symbols.
  • the construction shown in FIG. 4 is not absolutely necessary for the support surfaces running in the longitudinal direction of the converter vessel, since the support surface spacing on each claw 5 to 10 is only small, so that expansion and deformation occur only to a much lesser extent than in the case of the support surfaces. It is possible to also support the guide devices 11 laterally against the support ring, as shown in FIG. 4.
  • each pair of claws 5, 6; 7, 8 and 9, 10 piston-cylinder units 22 are provided both on the upper 31 and on the lower side 21 of the converter support ring 2, each cylinder 24 of the piston-cylinder units 22 being connected to an expansion tank 27 via a hydraulic line 26, in which a spring-loaded displacement piston 29 is installed.
  • a throttle valve 32 is installed in each of the hydraulic lines 26.
  • the function of this device is as follows: the weight of the converter, when the converter is upright, presses the hydraulic medium through the pistons 30 in all the piston-cylinder units 22 arranged on the upper side 31 of the support ring 2 into the expansion tank 27. In the piston-cylinder units 22 arranged on the underside 21 of the support ring, the piston 30 is always pressed against the contact surfaces 16 of the lower support brackets 6, 8 and 10 as a result of the spring-loaded displacement piston 29 in the expansion tank 27.
  • the piston-cylinder units 22 that come down when the converter is tilted compensate for the play between the support ring 2 and the converter vessel 1 by lowering their pistons 30 (as a result of the spring-loaded displacement pistons 29). There can thus never be a beating and escaping Ver Formations of the converter vessel and the support ring have no additional load on the suspension.
  • FIG. 6 shows the use of the device according to FIG. 6 for the support surfaces 17 running parallel to the longitudinal direction 15 of the converter vessel 1, parts which correspond to one another again being provided with the same reference symbols.
  • This device shown in FIG. 1 can also be used for the guide devices 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Reciprocating Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP79890046A 1978-11-10 1979-11-06 Kippbarer Konverter Expired EP0011610B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT8050/78 1978-11-10
AT805078A AT357583B (de) 1978-11-10 1978-11-10 Kippbarer konverter

Publications (2)

Publication Number Publication Date
EP0011610A1 EP0011610A1 (de) 1980-05-28
EP0011610B1 true EP0011610B1 (de) 1981-08-12

Family

ID=3602027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79890046A Expired EP0011610B1 (de) 1978-11-10 1979-11-06 Kippbarer Konverter

Country Status (12)

Country Link
US (1) US4280688A (pl)
EP (1) EP0011610B1 (pl)
JP (1) JPS5565315A (pl)
AT (1) AT357583B (pl)
BR (1) BR7907246A (pl)
CA (1) CA1125012A (pl)
CS (1) CS214812B2 (pl)
DD (1) DD147252A5 (pl)
DE (1) DE2960645D1 (pl)
ES (1) ES485512A1 (pl)
PL (1) PL121852B1 (pl)
RO (1) RO78825A (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341824C2 (de) * 1983-11-19 1986-09-04 Mannesmann AG, 4000 Düsseldorf Befestigung für warmgängige Gefäße, insbesondere für kippbare Stahlwerkskonverter
KR101180224B1 (ko) * 2010-07-07 2012-09-05 주식회사 포스코 쇳물용기 지지장치
DE102013224073A1 (de) * 2012-12-21 2014-06-26 Sms Siemag Ag Befestigungssystem für kippbare metallurgische Behandlungsgefäße
CN115673305B (zh) * 2023-01-03 2023-05-23 辛集市澳森钢铁集团有限公司 一种钢铁制造用浇注设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1433498A1 (de) * 1963-03-08 1969-02-06 Demag Ag Verfahren und Vorrichtung zur Frischbehandlung von Roheisenschmelzen in kippbaren Konvertern
FR1423829A (fr) * 1964-11-23 1966-01-07 Fives Lille Cail Perfectionnement aux convertisseurs pour aciéries
US3400922A (en) * 1965-04-12 1968-09-10 Demag Ag Metallurgical vessel construction
US3312544A (en) * 1965-12-16 1967-04-04 Kerma Corp Method and apparatus for making steel
US3391919A (en) * 1966-03-17 1968-07-09 Birdsboro Corp Converter vessel support
US3548678A (en) * 1969-05-14 1970-12-22 Falk Corp Torque absorber for shaft mounted gear drives
CH528319A (de) * 1971-04-29 1972-09-30 Fischer Ag Georg Kippvorrichtung für einen Giessbehälter
DE2803457C2 (de) * 1978-01-27 1979-05-17 Demag Ag, 4100 Duisburg Spannvorrichtung für Zugelemente an metallurgischen Gefäßen, insbesondere an Wechselkonvertern

Also Published As

Publication number Publication date
PL219514A1 (pl) 1980-07-28
ES485512A1 (es) 1980-04-16
US4280688A (en) 1981-07-28
DD147252A5 (de) 1981-03-25
RO78825A (ro) 1982-04-12
DE2960645D1 (en) 1981-11-12
AT357583B (de) 1980-07-25
CS214812B2 (en) 1982-06-25
JPS5565315A (en) 1980-05-16
PL121852B1 (en) 1982-06-30
BR7907246A (pt) 1980-07-08
CA1125012A (en) 1982-06-08
EP0011610A1 (de) 1980-05-28
ATA805078A (de) 1979-12-15

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