EP0236135A2 - Tragvorrichtung für ein Gefäss - Google Patents

Tragvorrichtung für ein Gefäss Download PDF

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Publication number
EP0236135A2
EP0236135A2 EP87301895A EP87301895A EP0236135A2 EP 0236135 A2 EP0236135 A2 EP 0236135A2 EP 87301895 A EP87301895 A EP 87301895A EP 87301895 A EP87301895 A EP 87301895A EP 0236135 A2 EP0236135 A2 EP 0236135A2
Authority
EP
European Patent Office
Prior art keywords
vessel
brackets
ring
trunnion
support arrangement
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.)
Withdrawn
Application number
EP87301895A
Other languages
English (en)
French (fr)
Other versions
EP0236135A3 (de
Inventor
Donald Alan Atkinson
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.)
Kvaerner Engineering and Construction UK Ltd
Original Assignee
Davy Mckee Stockton Ltd
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 Davy Mckee Stockton Ltd filed Critical Davy Mckee Stockton Ltd
Publication of EP0236135A2 publication Critical patent/EP0236135A2/de
Publication of EP0236135A3 publication Critical patent/EP0236135A3/de
Withdrawn legal-status Critical Current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

  • This invention relates to a support arrangement for a vessel, such as the vessel of a basic oxygen converter.
  • a basic oxygen converter vessel is conventionally supported in a circular trunnion ring.
  • Various means of connecting the two elements are known, all of which are required to comply with the following:-
  • a common arrangement for supporting the vessel within the ring is by means of a series of brackets attached either by welding or bolting to the vessel. These brackets locate against the upper and lower flanges of the trunnion ring. In a typical arrangement there are six or eight brackets above the ring and a corresponding number below the ring. Stops are welded to the lower flange at each end of the lower brackets for location purposes, while claws are secured to the upper flange at each end of the upper brackets for the same purpose. For manufacturing reasons a gap is left between each bracket and its mating claw in which a key or pack is fitted upon assembly at site. Maintenance of these packs has proved to be difficult; on occasions packs have come out of position in service of the vessel and caused maintenance problems.
  • a further disadvantage of this known design of vessel support arrangement is that it is structurally indeterminate as it is not possible to ensure that all brackets are sharing equally the weight of the vessel and its contents. It has accordingly usually been assumed by the designer that the weight is carried by a percentage only of the brackets and the brackets have then been sized for that duty.
  • the present invention accordingly seeks to avoid the disadvantages associated with provision of packs in the conventional design. It further seeks to provide an improved support arrangement for a vessel, such as a basic oxygen converter vessel, in which the need for packs is obviated. Furthermore it seeks to provide a structurally determinate support arrangement for a vessel, for example a vessel for a basic oxygen converter.
  • a support arrangement for a vessel such as a basic oxygen converter vessel, comprising a substantially circular flanged trunnion ring within which the vessel is located and having diametrically opposed trunnion pins about which the ring may pivot to tilt the vessel, three brackets secured to the vessel including first and second brackets substantially symmetrically positioned on opposite sides of the vessel and each adjacent a corresponding trunnion pin and a third bracket at a position intermediate the first and second brackets, stops on the ring positioned so as to lie adjacent one to each end of the first and second brackets, and claw members secured to a flange of the trunnion ring and directly engaging the brackets and the stops.
  • the vessel At erection the vessel is positioned in the ring, the three brackets are bolted or otherwise secured to the vessel, the dimensions between the stops and the ends of the brackets are measured, and then the claws are machined to suit prior to fitting the claws.
  • the trunnion ring may have either an upper flange or a lower flange but preferably has both upper and lower flanges.
  • the brackets may be mounted either above or below the ring; in a preferred arrangement they are mounted below the ring and are secured by means of claws attached to the lower annular flange on the trunnion ring. In this way the brackets are protected by the ring from any slopping from the vessel.
  • stops provided at the ends of the first and second brackets, there may also be stops on the ring at the ends of the third bracket.
  • a basic oxygen converter vessel l is supported in a trunnion ring 2 by means of three brackets, i.e. a first bracket 3, a corresponding second bracket (not shown) on the opposite side of vessel l, and a third bracket 4.
  • Reference numeral 5 indicates the centre line of the trunnion pins, which are not shown in Figure l.
  • Claws 6 serve to locate the corresponding brackets 3, 4 relative to the ring 2.
  • Vessel l is provided with a tap hole 7 in the usual way.
  • FIG. 2 shows the brackets 3, 4 in more detail; for the sake of clarity the claw and bolt have been omitted from the right-hand side of bracket 3 as shown.
  • Each bracket has a vertical leg 8 which is shaped to conform to the outer surface of vessel l and which is secured to the vessel l by means of bolts 9 which pass through both the vessel wall and the vertical leg 8 of the bracket (see also Figure 4).
  • the horizontal leg l0 of each bracket has two thick blocks ll fabricated into each of its ends which contact the lower flange l2 of trunnion ring 2. These blocks ll are connected by a bridging plate l3. The faces of blocks ll which contact ring flange l2 are dressed to ensure good bracket to ring contact.
  • Figure 2 indicates two possible forms of trunnion ring.
  • the lower flange l2 may be continuous around the trunnion ring 2, as is also the upper flange l4 in this embodiment.
  • the upper and lower flanges l2 ⁇ and l4 ⁇ may be interrupted in the region of the trunnion l5, as indicated to the left of the line Y-Y in Figure 2; in this case a stiffening plate l5 ⁇ may be added to span the gap in the upper flange l4 ⁇ .
  • Each claw 6 is secured in position by means of bolts l6 which pass through corresponding clearance holes l7 in lower flange l2 and are pre-stressed by means of a hydraulic nut l8 to prevent stress cycling.
  • the claws 6 for bracket 3 are each secured by means of a pair of bolts l6, while the claws 6 for bracket 4 are each secured by a single bolt l6; it is, however, equally possible to use a pair of bolts l6 to secure each of the claws 6 for bracket 4 in the same way that the claws 6 for bracket 3 each have a pair of such bolts.
  • Each claw 6 directly engages the corresponding block ll and is backed up by a respective block l9 welded to the lower flange l2; this arrangement ensures that, when the vessel l is laid over on its side for tapping or sampling, the claw bolts l6 are not subjected to appreciable shear loads.
  • thickening pads can be welded to the flange l2, prior to drilling holes l7 through both pad and flange, for the purpose of reinforcing the flange.
  • the face of each block l9 which fits against the corresponding claw 6 is machined flat prior to bring welded to the trunnion ring 2.
  • each stop bracket l9 and the corresponding bracket is measured at a number of points, for example at four points, and the respective claw 6 is then machined to suit, allowing for a small clearance (for example, about l mm clearance) in order to allow for dilation of the vessel l during the steelmaking sequences.
  • the vessel l At intermediate angles, the vessel l will be supported by a combination of these forces.
  • the third bracket 4 is also responsible for transmitting the tilting torque from the trunnion ring 2 to the vessel l. Any tendency for the vessel l to shift within the ring 2 in a direction normal to the axis of the trunnion pins l5 is resisted by the claws 6, whilst any tendency for the vessel l to more along the trunnion pins' axis 5 is restrained by the third bracket 4.

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  • 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)
EP87301895A 1986-03-05 1987-03-04 Tragvorrichtung für ein Gefäss Withdrawn EP0236135A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868605455A GB8605455D0 (en) 1986-03-05 1986-03-05 Vessel support arrangement
GB8605455 1986-03-05

Publications (2)

Publication Number Publication Date
EP0236135A2 true EP0236135A2 (de) 1987-09-09
EP0236135A3 EP0236135A3 (de) 1990-06-20

Family

ID=10594093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301895A Withdrawn EP0236135A3 (de) 1986-03-05 1987-03-04 Tragvorrichtung für ein Gefäss

Country Status (4)

Country Link
EP (1) EP0236135A3 (de)
JP (1) JPS62235411A (de)
GB (1) GB8605455D0 (de)
IN (1) IN169316B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018119A1 (en) * 1990-05-18 1991-11-28 Davy Mckee (Stockton) Limited Converter vessel support assembly
WO1995025818A1 (en) * 1994-03-21 1995-09-28 Davy Mckee (Stockton) Limited A support for a basic oxygen converter vessel
WO1995025819A1 (en) * 1994-03-21 1995-09-28 Davy Mckee (Stockton) Limited Support for a basis steel converter vessel
WO2009074044A1 (en) * 2007-12-03 2009-06-18 Cisdi Engineering Co., Ltd. A pre-stressed stopper mechanism of a converter
CN101638710B (zh) * 2009-05-18 2011-08-17 中冶赛迪工程技术股份有限公司 一种转炉的三支撑面预应力挡座机构
US9358610B2 (en) 2010-07-07 2016-06-07 Posco Device for supporting molten metal container
RU2623934C1 (ru) * 2016-03-29 2017-06-29 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Кислородный конвертер для переработки чугуна и металлического лома с повышенным содержанием вредных примесей

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000621A (en) * 1958-03-12 1961-09-19 Voest Ag Tiltable crucible or converter for refining crude iron
US4191364A (en) * 1978-04-20 1980-03-04 Pennsylvania Engineering Corporation Support for metallurgical vessels
US4342445A (en) * 1980-11-03 1982-08-03 Pennsylvania Engineering Corp. Self-aligning trunnion bracket for metallurgical vessels

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018119A1 (en) * 1990-05-18 1991-11-28 Davy Mckee (Stockton) Limited Converter vessel support assembly
WO1995025818A1 (en) * 1994-03-21 1995-09-28 Davy Mckee (Stockton) Limited A support for a basic oxygen converter vessel
WO1995025819A1 (en) * 1994-03-21 1995-09-28 Davy Mckee (Stockton) Limited Support for a basis steel converter vessel
WO2009074044A1 (en) * 2007-12-03 2009-06-18 Cisdi Engineering Co., Ltd. A pre-stressed stopper mechanism of a converter
CN101638710B (zh) * 2009-05-18 2011-08-17 中冶赛迪工程技术股份有限公司 一种转炉的三支撑面预应力挡座机构
US9358610B2 (en) 2010-07-07 2016-06-07 Posco Device for supporting molten metal container
RU2623934C1 (ru) * 2016-03-29 2017-06-29 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Кислородный конвертер для переработки чугуна и металлического лома с повышенным содержанием вредных примесей

Also Published As

Publication number Publication date
EP0236135A3 (de) 1990-06-20
IN169316B (de) 1991-09-28
JPS62235411A (ja) 1987-10-15
GB8605455D0 (en) 1986-04-09

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Inventor name: ATKINSON, DONALD ALAN