WO2011157498A2 - Kippbarer konverter - Google Patents
Kippbarer konverter Download PDFInfo
- Publication number
- WO2011157498A2 WO2011157498A2 PCT/EP2011/057813 EP2011057813W WO2011157498A2 WO 2011157498 A2 WO2011157498 A2 WO 2011157498A2 EP 2011057813 W EP2011057813 W EP 2011057813W WO 2011157498 A2 WO2011157498 A2 WO 2011157498A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- converter
- lamella
- support ring
- protective element
- vessel
- Prior art date
Links
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
- C21C5/50—Tilting mechanisms for converters
-
- 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 with a surrounding the converter vessel at a distance supporting ring, which two diametrically opposite
- Fasteners is attached to the support ring and a connecting element is rigidly fixed in each case with its opposite ends on the underside of the support ring on the one hand and the converter vessel on the other hand.
- Converters are tiltable metallurgical vessels with suspension, in which liquid metals and metal alloys are manufactured and treated.
- Converter vessels are exposed during operation to high thermal loads, which lead to significant thermal expansion and deformation. Therefore, a support ring surrounds the converter vessel at a predetermined distance. In today's conventional converter sizes, in addition to the thermal load in addition to high weight loads in the connecting elements, these loads vary depending on the tilted position of the converter vessel.
- the connecting elements are therefore to be arranged so that in any operating position of the converter vessel overloads on individual
- Connecting elements occur. Furthermore, the connecting elements should be arranged largely protected from slag ejection from the converter mouth.
- connecting elements are designed as disk packs, that is, they consist of a plurality of spaced apart slats, usually two or three, as shown for example in AT 504 664 B1.
- slats spaced apart slats
- fin elements are provided, which are arranged distributed on the underside of the support ring on the circumference and connect the converter vessel with the support ring.
- This type of suspension is already known from EP 1 061 138 A2.
- the lamella suspension has the advantage that it is radially yielding.
- the slats are usually designed as thin rectangular plates made of steel. Due to their small thickness, they are very bendable, thus resulting in
- thermal deformation of the converter vessel in the slats only relatively low voltages.
- the arrangement of the slats in packages should on the one hand distribute the load of the converter vessel to a larger cross-section, on the other hand provide security in case of failure of individual slats.
- the connection through the slats represents a statically indeterminate system, that is, the stresses occurring in the individual slats depend on the deformation of the
- the cause of the uneven load distribution has various causes.
- the arrangement of the lamellae in packets requires that the fins closer to the hot converter vessel, ie the inner fins, heat much more strongly than the outer fins shielded by the inner fins.
- the inner fins stretch more and only bear part of the converter load or additionally load the outer fins.
- Disk packs near the trunnion therefore carry greater loads than those further from the trunnions.
- the disk packs also carry part of the load, although here the converter vessel is mainly supported by additional elements such as stops or horizontal links on the support ring is. Due to the large width of the slats in the range of a few hundred mm and the associated
- the connecting element comprises exactly one blade, which is shielded from the converter vessel with a protective element, which with its opposite ends also with both the
- Converter vessel is also connected to the support ring, but only one of these ends is rigidly connected to either the support ring or with the converter vessel. Due to the fact that only one supporting lamella is provided per connecting element, all lamellae of all connecting elements are subject to the
- a lamella is generally understood to mean a thin, narrow and leaf-shaped, ie flat, element. This means that the lamella is many times wider than it is thick and on the other hand is many times longer than it is wide.
- lamella according to the invention has typical dimensions of 5-20 mm thickness, 200- 600 mm width and 1000-2000 mm length.
- the lamella is usually oriented so that the plane of the lamella is parallel to a tangential plane of the converter, as well as in the case of the Lamella packages according to the prior art is the case.
- the slats are inclined a few degrees to the vertical when the opening of the
- Converter vessel is located at the top.
- the rigid attachment of the blade on the converter vessel and the support ring can be done by a screw, bolt or welded connection.
- the protective element which itself has no supporting function, the single lamella is now better protected by the heat of the converter vessel, so that the lamella now expands less strongly. This requires a longer life of the blade and an increase in the reliability of the suspension. Since the protective element has no supporting function, the other - not rigidly connected - end of the protective element with play in the longitudinal direction may be connected to the support ring or the converter vessel to allow a free thermal expansion of the protective element - in its longitudinal direction.
- the other - not rigidly connected - end of the protective element can be connected by means of catch with the support ring or the converter vessel, so that the protective element can take over their load in case of failure of the blade.
- the protective element has a greater thickness than the lamella.
- the protective element is two to three times thicker than the lamella.
- the protective element has at least the length and width of the lamella.
- the entire lamella is protected by direct heat radiation from the converter vessel.
- the protective element is congruent with the blade in front of this and thus mounted between this and the converter vessel.
- the protective element is arranged at least partially parallel to the lamella. If the protective element and lamella are approximately parallel to each other in the region of their fastening, then they can be easily fastened in the same fastening device, for example by means of a spacer. To make the load more evenly spaced between the circumferences
- the connecting elements are arranged as close as possible to the support pin or at the opening for the support pin in the support ring.
- the connecting elements can indeed only be arranged side by side and not one above the other. Therefore, they are best placed directly under the trunnions and further in the smallest possible distance from these slats left and right thereof.
- connection elements arranged closer to the support pin can be made wider than the adjacent other connection elements. So it can be performed with different widths of the slats to equalize the load distribution between the slats.
- shape of the slat can be optimized, for example by numerical methods. The maximum
- Main direction (longitudinal direction) is maximized and the shear stiffness is minimized. This can advantageously be achieved in that the lamella tapers from its opposite ends towards the center.
- the lamella is formed both symmetrically to its longitudinal axis and to its central transverse axis.
- the lamella would again be congruent with itself even when rotated by 180 ° in the plane of the lamella.
- the lamella does not have to be formed symmetrically, but it can also be designed so that it has only a twofold rotational symmetry without symmetry to its longitudinal or transverse axis.
- the lamella may be tapered approximately in its central region only to a web of the same width, which extends from a longitudinal edge of the non-tapered region to the non-tapered longitudinal edge at the other end of the lamella.
- asymmetrical slats can be arranged in pairs symmetrically to one another, in particular symmetrical to a vertical axis through the opening for the trunnion.
- the lamella Due to the separation of the functions according to the invention, in that the lamella carries only the load and the protective element serves as heat protection and as emergency protection, each of the two can be optimized for its function. There are no stresses in the blade due to uneven thermal expansion as in the prior art blade pack.
- the lamella, the protective element and the fasteners (usually screwed) can be made easier and cheaper. Furthermore, this will increase the safety of
- the stiffness ratios ie the shear stiffness and the stiffness in the longitudinal direction of the lamella, are influenced in such a way that the maximum stresses occurring in the lamellae and in the fastenings during charging or parting off are significantly reduced. This also increases the life of the converter suspension, and the fins can be made lighter and cheaper.
- FIG. 1 shows a section of a converter with a blade according to the invention and with a protective element arranged in parallel
- FIG. 2 shows a detail of a converter with a blade according to the invention and with a protective element arranged at an angle thereto,
- FIG. 3 shows a section of a converter with a blade according to the invention and with an angled protective element
- Fig. 5 shows a converter in side view with various
- Fig. 6 shows a converter in side view with inventive
- Fig. 1 a section of a longitudinal section through a converter vessel 1 and the support ring 2 is shown. From the converter vessel 1, the side wall can be seen.
- the support ring 2 has a box-shaped cross-section.
- the blade 3 is rigidly connected at one end by means of screw with an upper mounting bracket 4, which is welded to the underside of the support ring 2 just outside the center of the support ring.
- the blade 3 is at its other (lower) end means
- the lamella 3 extends more than half of its length over slightly more than the lower third of the straight cylindrical side wall of the converter vessel 1.
- the lower part of the blade 3 extends approximately parallel to the cone-shaped lower side wall of the
- a straight thin protective element 6 is arranged parallel to the blade 3, wherein the protective element 6 is the same length and the same width as the blade 3, but has a greater thickness.
- the protective element 6 is about 1, 5-2 times thicker than the lamella 3. It is at its upper end with the same Screwed as the blade 3 rigidly attached to the upper mounting bracket 4.
- At the lower end of the protective element 6 is slidably mounted by means of a safety catch 7 in the lower mounting bracket 5. If the blade 3 break, the protective element 6 would due to the safety catch 7, the quasi one
- Fixing bracket 5 can slip, previously collected by the slat 3 load.
- Fig. 2 the same section of the converter vessel 1 and the support ring 2 as shown in Fig. 1, but the blade 3 is further displaced from the converter vessel 1 to the outside, but with the same inclination with respect to the converter vessel 1 as shown in Fig. 1. Accordingly, the upper mounting bracket 4 is disposed near the outer edge of the support ring 2 and the lower mounting bracket 5 is formed longer.
- the straight or even protective element 8 is here thicker than that in Fig. 1 (about 2-3 times thicker than the lamella 3) and welded slightly within the center of the support ring 2 at this. At its lower end, the protective element 8 is again slidably secured in the lower mounting bracket 5 by means of a safety catch 7.
- Fig. 3 the attachment of the blade 3 is the same as in Fig. 1, however, an angled protective element 9 is provided in Fig. 3.
- the two legs of the protective element 9 are designed so that the upper leg is parallel to the cylindrical side wall of the converter vessel 1 and the lower leg approximately parallel to the cone-shaped lower side wall of the converter vessel. 1
- the upper end of the protective element 9 is welded very close to the inner end of the underside of the support ring 2.
- Protective element 9 is as in the embodiments in FIGS. 1 and 2 by means of a
- the lamellae of the invention are made of very high quality, high strength and temperature resistant steel.
- the protective elements can be made of the same material or of a less expensive material, which in the latter requires a corresponding increase in thickness.
- the side view of a converter according to the invention is shown.
- Left and right of a vertical axis through the center of the opening 10 is arranged on the underside of the support ring 2 each have a connecting element with a blade 3, right then left and right yet another.
- four fins 3 are also arranged. Otherwise there are no more
- the fins 3 are therefore not at regular intervals from each other on the support ring 2 and mounted on the converter vessel, but only in the area below the trunnion and directly thereafter. In this case, the two inner fins, so closer to the support pin, made wider than the outer.
- Fig. 5 the converter is also seen in side view, in which case four different blade shapes according to the invention are shown. Each blade shown has two different side contours, wherein in the real version, a blade 3 only one of the side contours symmetrical on both
- an elliptical cutout is provided on the otherwise straight longitudinal side of the lamella 3, wherein the underlying ellipse is aligned with its main axis in the longitudinal direction of the lamella 3, but the main axis lies outside the originally straight longitudinal side of the lamella.
- the longitudinal side of the lamella 3 has a trapezoidal cutout in the middle.
- the circular segment-shaped contour 13 has a depth of less than a radius of the generating circle, preferably a depth of about 30% of the circle radius.
- the underlying ellipse lies with its main axis in the extension of the straight upper and lower longitudinal contour of the blade third
- FIG. 6 an embodiment of the invention with asymmetrical blades 15 is shown.
- An asymmetrical lamella 15 has a taper in the form of a ridge, which has approximately half the width of the non-tapered lamella, and the one longitudinal edge of the upper end of the lamella to the other longitudinal edge the lower end runs. It results in a Z-shape, which is a strange
- the second blade 15 is arranged mirror-symmetrically to the vertical axis through the opening 10 for the support pin.
- more pairs of slats may be arranged consisting of asymmetric slats, which in turn are also arranged symmetrically to the vertical axis through the opening 10 of the support pin.
- Symmetrical slats 3 with asymmetric slats 15 can also be combined with a converter.
- a numerical optimization of the lamellar shape is carried out - the result is usually curves of higher order, which are very difficult to manufacture.
- a simplified contour coming closest to this calculated contour consisting of straight lines, circles and ellipses, is then used. All side contours shown have in common that they form a taper in the middle of the lamella 3. The taper increases from the ends of the lamella towards the center. In the middle of the slat has the narrowest point. About one quarter to one third of the length of the lamella (the parts of the lamella in the
- Mounting bracket are not visible in Fig. 5 and Fig. 6) at the top and bottom of the blade have no taper, but a straight side contour. All slats shown are symmetrical to their longitudinal axis and to the transverse axis through the center of the slat.
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)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATGM9005/2011U AT13321U1 (de) | 2010-06-17 | 2011-05-16 | Kippbarer Konverter |
DE212011100110U DE212011100110U1 (de) | 2010-06-17 | 2011-05-16 | Kippbarer Konverter |
RU2013102049/02U RU129931U1 (ru) | 2010-06-17 | 2011-05-16 | Поворотный конвертер |
GB1220491.3A GB2492735B (en) | 2010-06-17 | 2011-05-16 | Tilting converter |
CN201190000576.8U CN203269971U (zh) | 2010-06-17 | 2011-05-16 | 可倾动的转炉 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT10042010A AT509202B1 (de) | 2010-06-17 | 2010-06-17 | Kippbarer konverter |
ATA1004/2010 | 2010-06-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011157498A2 true WO2011157498A2 (de) | 2011-12-22 |
WO2011157498A3 WO2011157498A3 (de) | 2012-05-10 |
Family
ID=44257142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/057813 WO2011157498A2 (de) | 2010-06-17 | 2011-05-16 | Kippbarer konverter |
Country Status (7)
Country | Link |
---|---|
CN (1) | CN203269971U (de) |
AT (2) | AT509202B1 (de) |
DE (1) | DE212011100110U1 (de) |
GB (1) | GB2492735B (de) |
PL (1) | PL67490Y1 (de) |
RU (1) | RU129931U1 (de) |
WO (1) | WO2011157498A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013185991A1 (de) | 2012-06-15 | 2013-12-19 | Siemens Vai Metals Technologies Gmbh | Horizontalabstützung für einen kippbaren konverter und verfahren zum umbau eines kippbaren konverters |
CN107881286A (zh) * | 2017-12-01 | 2018-04-06 | 迁安首钢设备结构有限公司 | 防止高温喷溅破坏转炉托圈耳轴、盖板、腹板的防护结构 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20130046A1 (it) | 2013-01-15 | 2014-07-16 | Danieli Off Mecc | Convertitore ribaltabile |
CN109542039B (zh) * | 2018-12-29 | 2021-04-30 | 德阳万达重型机械设备制造有限公司 | 一种炉体倾动传动驱动系统 |
CN112646949A (zh) * | 2020-11-10 | 2021-04-13 | 黄涛 | 一种炼钢炉全角度倾动减小炉体冲击力机构 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1061138A2 (de) | 1999-06-19 | 2000-12-20 | SMS Demag AG | Konverter |
AT504664B1 (de) | 2007-02-02 | 2008-07-15 | Siemens Vai Metals Tech Gmbh | Kippbarer konverter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1903685C2 (de) * | 1969-01-25 | 1975-07-17 | Gutehoffnungshuette Sterkrade Ag, 4200 Oberhausen | Metallurgisches Kippgefäß, Insbesondere Konverter zum Frischen von Roheisen |
FR2520382A1 (fr) * | 1982-01-27 | 1983-07-29 | Normandie Ste Metallurg | Dispositif de protection thermique de la ceinture d'un convertisseur d'acierie |
AT502333B1 (de) * | 2005-09-09 | 2007-12-15 | Voest Alpine Ind Anlagen | Kippbares metallurgisches gefäss |
-
2010
- 2010-06-17 AT AT10042010A patent/AT509202B1/de not_active IP Right Cessation
-
2011
- 2011-05-16 GB GB1220491.3A patent/GB2492735B/en not_active Expired - Fee Related
- 2011-05-16 DE DE212011100110U patent/DE212011100110U1/de not_active Expired - Lifetime
- 2011-05-16 CN CN201190000576.8U patent/CN203269971U/zh not_active Expired - Fee Related
- 2011-05-16 RU RU2013102049/02U patent/RU129931U1/ru not_active IP Right Cessation
- 2011-05-16 AT ATGM9005/2011U patent/AT13321U1/de not_active IP Right Cessation
- 2011-05-16 WO PCT/EP2011/057813 patent/WO2011157498A2/de active Application Filing
- 2011-05-16 PL PL121591U patent/PL67490Y1/pl unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1061138A2 (de) | 1999-06-19 | 2000-12-20 | SMS Demag AG | Konverter |
AT504664B1 (de) | 2007-02-02 | 2008-07-15 | Siemens Vai Metals Tech Gmbh | Kippbarer konverter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013185991A1 (de) | 2012-06-15 | 2013-12-19 | Siemens Vai Metals Technologies Gmbh | Horizontalabstützung für einen kippbaren konverter und verfahren zum umbau eines kippbaren konverters |
CN107881286A (zh) * | 2017-12-01 | 2018-04-06 | 迁安首钢设备结构有限公司 | 防止高温喷溅破坏转炉托圈耳轴、盖板、腹板的防护结构 |
Also Published As
Publication number | Publication date |
---|---|
GB2492735B (en) | 2013-04-03 |
CN203269971U (zh) | 2013-11-06 |
PL121591U1 (pl) | 2013-05-27 |
GB2492735A (en) | 2013-01-09 |
RU129931U1 (ru) | 2013-07-10 |
GB201220491D0 (en) | 2012-12-26 |
AT509202A4 (de) | 2011-07-15 |
AT13321U1 (de) | 2013-10-15 |
PL67490Y1 (pl) | 2014-11-28 |
AT509202B1 (de) | 2011-07-15 |
WO2011157498A3 (de) | 2012-05-10 |
DE212011100110U1 (de) | 2013-02-04 |
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