US3684265A - Support arrangement for a vessel used in high temperature operations - Google Patents

Support arrangement for a vessel used in high temperature operations Download PDF

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Publication number
US3684265A
US3684265A US8240A US3684265DA US3684265A US 3684265 A US3684265 A US 3684265A US 8240 A US8240 A US 8240A US 3684265D A US3684265D A US 3684265DA US 3684265 A US3684265 A US 3684265A
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US
United States
Prior art keywords
vessel
ring
support
reinforcing ring
support ring
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Expired - Lifetime
Application number
US8240A
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English (en)
Inventor
Karl Heinrich Mahringer
Karlheinz Langlitz
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Mannesmann Demag AG
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Demag AG
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Filing date
Publication date
Application filed by Demag AG filed Critical Demag AG
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Publication of US3684265A publication Critical patent/US3684265A/en
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    • 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 is based on the known principle of separating the connecting members between the vessel and its supporting structure which absorbs the loads under the different loading conditions. Accordingly, it is known under certain loaded conditions of the vessel to utilize vertically arranged tensile stress elements which permit transverse movement of the attachment points for the tensile stress elements obliquely to the axis of the tensile stress. In the belly position of the vessel (when the longitudinal or central axis of the vessel is in the horizontal position) there is the condition that the thermal stresses can be absorbed in the radial direction and at the same time in the longitudinal direction of the vessel.
  • the problems mentioned above are solved by the combination of tensile stress elements, which are secured at their opposite ends to a support ring and a reinforcing ring connected to the vessel, and additional support means formed of bolt connections between the support ring and the reinforcing ring for the belly" position of the vessel, where the bolts are arranged in the direction of the longitudinal or central axis of the vessel in its upright and tilted positions.
  • additional support means formed of bolt connections between the support ring and the reinforcing ring for the belly" position of the vessel, where the bolts are arranged in the direction of the longitudinal or central axis of the vessel in its upright and tilted positions.
  • the torsional stress in the vessel shell when the vessel is in the belly" position is absorbed, to a great extent, by the reinforcing ring which is also capable of absorbing major forces limited to smaller surface areas. Accordingly, a pair of bolt connections between the support ring and the reinforcing ring is sufficient under certain circumstances for providing the requisite support.
  • several bolt connection arrangements can be provided about the circumference of the support ring and the reinforcing ring. The essential effect of the bolt connections consists in avoiding thermal expansion obstacles, at least in the axial direction of the vessel.
  • the basic concept of the invention combines a high load absorbing capacity of the support arrangement with a high thermal expandability at times of maximum heat production and at the same time a simple assembly and disassembly arrangement so that the vessels can be easily replaced as each new lining of brickwork is required.
  • the tensile stress elements are comprised of bundles of single or individual wires which are secured at their ends within anchor heads and which can be prestressed by means of mechanical members cooperating with the bundles of wires.
  • the maximum admissible prestressing forces with an average number of individual wires, for example, having a diameter of 7 cm, is already known to be on the order of 500 tons or more.
  • an initial stress of up to l 12 kp/mm is used.
  • Another feature of the invention is the disposition of the bolt connections exteriorly of the vessel extending between the support ring and the reinforcing ring. With such an arrangement the various parts of the support arrangement are located in lower temperature regions relative to the temperature conditions within the vessel and can be protected from damage or from fouling by dirt and similar material.
  • the tensile stress elements extend through the support ring and the reinforcing ring with a turnbuckle or similar means for prestressing the elements preferably disposed within a protective housing so that the tensile stress elements and the means for prestressing the elements are completely protected. While the enclosure of the tensile stress elements protects them from slag splashes and the like, it also has a particular advantage in protecting the elements from radiant heat. Moreover, the placement of the elements within the support and reinforcing rings permits the maintenance of a minimum distance from the central longitudinal axis of the vessel and accordingly any load moments are kept correspondingly low.
  • one of the two anchor heads of each tensile stress element is arranged on the underside of the lower one of the support ring and the reinforcing ring, and a special adjusting device is provided for preliminary adjustment of the turnbuckle. The preliminary adjustment permits the detachment of the tensile stress elements without the necessity of readjusting the initial stress for reassembly.
  • adjusting devices can be utilized for effecting the preliminary adjustment.
  • a particularly means for example, a spindle member screwed into the sleeve, so that when the hydraulic force is removed the prestressing action on the individual wires remains. If, after a considerable period of operation, there is a reduction in the prestressing force, the adjusting device can be readily manipulated to produce the required prestressing force, that is, to effect a readjustment in the prestressing. Where plastic deformations take place, as mentioned above, the adjusting device provided in the present invention has considerable advantages.
  • FIG. 1 is an elevational view of a steel mill converter with a portion shown broken away illustrating a support arrangement in accordance with the present invention
  • FIG. 2 is a top view of the arrangement shown in FIG. 1;
  • FIG. 3 is an elevational view showing a steel mill converter, as illustrated in FIGS. 1 and 2, showing its assembled and disassembled positions relative to the support arrangement and with a special change car for the vessel in its disassembled position;
  • FIG. 4 is an enlarged detail view of the engagement of a bolt connection within a reinforcing ring
  • FIG. 5 is a partial longitudinal sectional view, on an enlarged scale, of a tensile stress element as shown in FIG. 3.
  • a steel plant converter 1 is formed of a vessel shell 2 composed of a number of individual sections welded together.
  • the vessel is shown in its normal upright position and its vessel mouth 3 at its upper end is reinforced by a mouth ring 4 and additional reinforcing rings 5, such as the one spaced immediately below the mouth ring 4, can be arranged about the circumference of the vessel.
  • ribs 7 are provided for reinforcement and attaching, if necessary, a detachable bottom cover 8.
  • the central portion 9 of the vessel is cylindrical in shape. Closely spaced above the ribs 7 and in rigid engagement with the central portion 9 of the vessel is a reinforcing ring 10.
  • the reinforcing ring 10 has a box-like cross sectional profile and is made up of individual parts welded together. Immediately above the reinforcing ring 10 and extending about the central portion 9 of the vessel 1 is a supporting ring 11 which is spaced outwardly from the vessel.
  • the support ring can be cast or individual sections can be welded together. Further, several cast segments can be secured together to form a full ring.
  • pivot pins 12 extend outwardly from the support ring and are secured in pivot bearings 13 which, in turn, rest on foundations 14.
  • a drive element is positioned for pivoting the pins 12 within their bearings 13.
  • the drive element 15 is designed so that sagging effects of the support ring 11 and of the pivot pins 12, respectively, or the temperatures reached within the converter, can produce no influence that would affect the torque transmission means.
  • the converter vessel 1 is arranged in its vertically axial position, that is, its normal upright position with its central or longitudinal axis designated by the reference numeral 16.
  • tensile stress elements 17 are provided which alone carry the weight of the vessel.
  • the tensile stress elements are indicated only by their end connections or mechanical attachments 18, since they extend through the support ring 11 and the reinforcing ring 10 and in the open space between the two rings the elements are closed in a housing 19 which is described below in greater detail with respect to the illustration in FIG. 5.
  • bolts 20 are provided inside the support ring and extend downwardly into the reinforcing ring 10 where they are secured by means of bolt receivers for transmitting the pivotal action from the support ring through the reinforcing ring to the vessel.
  • a pair of the bolts 20 are provided, each on a diametrically opposed side of the vessel, and the bolts extend in a plane which includes both the central axis 16 of the vessel and the pivot pin axis 22 of the support arrangement.
  • the bolts 20 are rigidly mounted in the support ring.
  • the tensile stress elements 17 are shown disposed in pairs in angularly spaced positions about the reinforcing ring 10 and the support ring 11.
  • the pairs of tensile stress elements 17 are arranged symmetrically to the pivot axis 22 and to the central axis of the vessel 16. While the tensile stress elements 17 are spaced from the plane which includes the pivot axis 22 and the central axis 16 of the vessel, the bolt connections 20, 21 are disposed in the plane of the pivot axis 22 and the central axis 16.
  • the bolt connections 20, 21 are positioned in the range of the pivot pins within the supporting ring 11.
  • FIGS. 3 and 5 show the essential features of the tensile stress elements 17.
  • Each of the elements 17 consists of a bundle 23 of single or individual wires 24, as illustrated in FIG. 5.
  • Each of the individual wires 24 extends through a corresponding bore in an anchor head 25 and the wires are provided with upset heads which prevent them from being displaced from the anchor heads 25.
  • Each bundle 23 has an anchor head at each of its opposite ends, one cooperating with the support ring 11 and the other with the reinforcing ring 10.
  • the adjustment of the stress for the wire bundles is effected by an auxiliary removable adjusting device 29 shown in FIG. 5.
  • the necessary supporting forces can be transmitted through housings 28 which are disposed between the upper plate 10a and the lower plate 10b of the reinforcing ring. Therefore, the housings 28 act not only as reinforcements for the reinforcing ring 10 as it receives the supporting forces, but also form envelopes or enclosures for the bundles 23 of individual wires 24 so that the wires are protected.
  • the adjustment device 29 comprises a housing 30 within which a threaded adjusting spindle 27 is positioned.
  • the housing 30 serves as a hydraulic chamber for a piston 31 threadedly mounted on the spindle 27 with the housing 30 cooperating with the piston 31 to form a pair of pressure chambers 32 and 33 for containing pressurized hydraulic fluid.
  • the anchor head 25 cooperating with the reinforcingring 10 is positioned closely below a reinforcing or support plate 10c welded or otherwise secured to the undersurface of the bottom plate 10b of ring 10.
  • Head 25 has an external or male thread 34 onto which a sleeve 35, having an internal thread, is screwed.
  • Sleeve 35 also has an external thread 36 by means of which the sleeve is threaded within a block 37 engaging the support plate 100.
  • the converter vessel 1 is moved by means of a vessel change car 39, see FIG. 3, into a position aligned below the support ring 11.
  • the vessel change car 39 is provided with a lifting device, not shown, which may consist, for example, of hydraulic cylinders.
  • Vessel 1 is then lifted from its disassembled position, in which it rests on vessel change car 39 as shown in dotted lines, upwardly into support ring 11 until reinforcing ring 10, on vessel 1, engages all the fitting pieces 53 welded to the undersurface of the support ring.
  • the two guide bolts 20 extend into their receivers 21.
  • Tension elements 17 are introduced from the top into and through the enclosures 28, these tension elements having the heads 25 on their lower ends secured in the sleeves 35.
  • the blocks 37 are threaded onto the sleeves 35 until they bear against the associated supporting plates 10c. After this, the prestressing, using the adjusting device 29, is effected by the spindle 27 in cooperation with the piston 31 and the chambers 32 and 33, as already described. With the vessel secured to the support ring the lifting means on the vessel change car can be retracted and the car can be moved out of the assembling position. The vessel is now in its operating position within the support ring 1 1.
  • the reinforcing ring has a ball and socket-like joint 43 which receives the lower end of the bolt 20, and a description of whose structure follows.
  • a ring 45 is removably secured by means of adapters 44 and receives a second ring 47 having a spherically shaped inner surface 46.
  • the ring 47 is held in place within the ring 45 by means of a cover member 48 which is threaded into engagement with the ring 45.
  • Another ring 49 forms the bolt connection 21 and has a spherically shaped outer surface which fits within the spherically shaped inner surface 46 of the ring 47 and is firmly pressed onto the cylindrically shaped shaft 50 of the bolt 20 by a shrink fit.
  • the bolt 20 does not perform any movement. However, due to the spherically shaped surfaces of the ring 47 and the ring or bolt connection 21 in engagement with one another, the reinforcing ring can effect movement relative to the bolt.
  • a support arrangement for tiltable vessels using high temperature operations comprising, in combination, a vessel having a central axis disposed in the upright position when said vessel is in its normally upright positions, a support ring laterally surrounding said vessel in spaced relation therewith, said support ring being disposed in a plane transverse to the central axis of said vessel, a reinforcing ring laterally embracing said vessel in supporting contact with said vessel, said reinforcing ring being spaced from said support ring and disposed in a plane transverse to the central axis of said vessel, a plurality of tensile stress elements each extending between said support ring and said reinforcing ring, means securing said tensile elements to said support ring and to said reinforcing ring, said tensile elements constituting the sole means supporting said vessel from said support ring, means for tilting said vessel from its normally upright position about an axis intersecting said central axis and perpendicular thereto, and
  • a support arrangement as set forth in claim 1, wherein said tensile stress elements are arranged in pairs in angularly spaced positions about said vessel and said tensile stress elements are spaced from a plane passing through the central axis of said vessel and through the axis about which said vessel tilts.
  • each said tensile stress element comprises a bundle of individual wires extending in the direction of the central axis of said vessel, said means for securing said tensile stress elements to said support ring and to said reinforcing ring comprising an anchor head at each end of said bundle of wires for anchoring the ends of said wires, and means for adjustably prestressing said bundles of wire.
  • each said bundle of wires extends through said support ring and reinforcing ring
  • said means for adjustably prestressing said bundles of wire comprising a turnbuckle type assembly releasably engageable with the underside of the lower one of said support ring and reinforcing ring in the normally upright position, and a housing enclosing said turnbuckle assembly with the lower end of said turnbuckle assembly extending through and being accessible at the lower end of said housing.
  • a support arrangement as set forth in claim 4, wherein said housing is engageable with the underside of the lower one of said support ring and reinforcing ring, a block engageable with the underside of the lower one of said support ring and reinforcing ring, within said housing, a sleeve threaded into said block, the anchor head securing the lower ends of said bundle of wires being threadedly engaged in said sleeve, said type assembly turnbuckle comprising a spindle axially alignable with said bundle of wires and having its upper end threadedly engaged in said sleeve, said spindle extending downwardly from said sleeve with its lower end extending through said housing so that said lower end is accessible for prestressing said bundle of wires, and a collar secured to said spindle and engageable with the bottom surface of said housing.
  • a support arrangement as set forth in claim 5, wherein said housing forming a closed space therein, a hydraulic piston disposed within and dividing said space in said housing into two hydraulic chambers, said hydraulic piston being adjustably mounted on said spindle in said housing so that by regulating the hydraulic pressure within said chambers a preliminary prestress can be applied to said bundle of wires and then by adjusting said spindle within said sleeve the prestress is transferred to the mechanical connection of said spindle to said sleeve and said housing.
  • a support arrangement as set forth in claim 1, wherein said bolts are rigidly secured to said support ring, and connector means are fixed within said reinforcing ring for receiving each of said bolts so that said reinforcing ring can move relative to said bolts.
  • said connector means comprises a ball and socket joint assembly
  • said ball and socket joint assembly comprising an inner ring having a cylindrical bore and engaged on said bolt by a shrink fit, the outer peripheral surface of said inner ring having a spherical configuration, an outer ring disposed in contacting engagement with said inner ring and having an inner spherically shaped surface in sliding engagement with the outer spherically shaped surface of said inner ring, and means for securing said inner and outer ring within said reinforcing ring.
  • a support arrangement as set forth in claim 1, wherein said means for tilting said vessel comprises a pair of pivot pins diametrically disposed and extending outwardly from the outer surface of said support ring, pivot bearings for said pivot pins positioned outwardly from said support ring, and foundation means for supporting said pivot bearings.
  • a support arrangement for tiltable vessels used in high temperature operations such as vessels used in steel mill converters, comprising a vessel having a central axis disposed in the upright direction when said vessel is in its normally upright position, a support ring disposed laterally about and in spaced relationship with said vessel, said support ring disposed in a plane normal to the central axis of said vessel, a reinforcing ring extending laterally about and in supporting contact with said vessel, said reinforcing ring spaced below and in parallel relationship with said support ring when said vessel is in its normally upright position, means for pivotally supporting said support ring with the pivot axis extending through and at right angles to the central axis of said vessel, a plurality of tensile stress elements disposed in pairs extending between said support ring and said reinforcing ring and said tensile elements being disposed in parallel relationship with the central axis of said vessel, said pairs of tensile elements being spaced symmetrically on opposite sides of said pivot axis and of said central axi

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US8240A 1969-03-10 1970-02-03 Support arrangement for a vessel used in high temperature operations Expired - Lifetime US3684265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1911948A DE1911948C3 (de) 1969-03-10 1969-03-10 Befestigung fur warmgangige Gefäße, insbesondere fur kippbare Stahlwerkskonverter

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US3684265A true US3684265A (en) 1972-08-15

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US8240A Expired - Lifetime US3684265A (en) 1969-03-10 1970-02-03 Support arrangement for a vessel used in high temperature operations

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US (1) US3684265A (ja)
JP (1) JPS4831445B1 (ja)
BE (1) BE743456A (ja)
DE (1) DE1911948C3 (ja)
FR (1) FR2034772B1 (ja)
GB (1) GB1291371A (ja)
SE (1) SE381284B (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410949A1 (de) * 1984-03-24 1985-10-03 Mannesmann AG, 4000 Düsseldorf Metallurgisches gefaess, insbesondere auswechselbarer stahlwerkskonverter
US4660809A (en) * 1983-11-19 1987-04-28 Mannesmann Ag Tiltable vessel
CN1041330C (zh) * 1994-12-20 1998-12-23 首钢总公司 可换式转炉

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803457C2 (de) * 1978-01-27 1979-05-17 Demag Ag, 4100 Duisburg Spannvorrichtung für Zugelemente an metallurgischen Gefäßen, insbesondere an Wechselkonvertern
DE2905283C3 (de) * 1979-02-12 1983-01-27 Mannesmann AG, 4000 Düsseldorf Metallurgisches Gefäß, insbesondere kippbarer und/oder umlaufender Stahlwerkskonverter
US7704347B2 (en) 2005-05-27 2010-04-27 Prairie Packaging, Inc. Reinforced plastic foam cup, method of and apparatus for manufacturing same
US7814647B2 (en) 2005-05-27 2010-10-19 Prairie Packaging, Inc. Reinforced plastic foam cup, method of and apparatus for manufacturing same
US7818866B2 (en) 2005-05-27 2010-10-26 Prairie Packaging, Inc. Method of reinforcing a plastic foam cup
US7694843B2 (en) 2005-05-27 2010-04-13 Prairie Packaging, Inc. Reinforced plastic foam cup, method of and apparatus for manufacturing same
US8828170B2 (en) 2010-03-04 2014-09-09 Pactiv LLC Apparatus and method for manufacturing reinforced containers
DE102013224072A1 (de) * 2012-12-21 2014-06-26 Sms Siemag Ag Befestigungssystem für kippbare metallurgische Behandlungsgefäße

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391919A (en) * 1966-03-17 1968-07-09 Birdsboro Corp Converter vessel support
US3502314A (en) * 1967-01-17 1970-03-24 Voest Ag Tiltable crucible or converter for refining pig iron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391919A (en) * 1966-03-17 1968-07-09 Birdsboro Corp Converter vessel support
US3502314A (en) * 1967-01-17 1970-03-24 Voest Ag Tiltable crucible or converter for refining pig iron

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660809A (en) * 1983-11-19 1987-04-28 Mannesmann Ag Tiltable vessel
DE3410949A1 (de) * 1984-03-24 1985-10-03 Mannesmann AG, 4000 Düsseldorf Metallurgisches gefaess, insbesondere auswechselbarer stahlwerkskonverter
US4700929A (en) * 1984-03-24 1987-10-20 Mannesmann Ag Mounting a metallurgical vessel
CN1041330C (zh) * 1994-12-20 1998-12-23 首钢总公司 可换式转炉

Also Published As

Publication number Publication date
DE1911948B2 (de) 1973-03-15
DE1911948C3 (de) 1973-10-11
GB1291371A (en) 1972-10-04
DE1911948A1 (de) 1970-09-24
FR2034772A1 (ja) 1970-12-18
FR2034772B1 (ja) 1973-11-16
SE381284B (sv) 1975-12-01
BE743456A (ja) 1970-05-28
JPS4831445B1 (ja) 1973-09-29

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