CA2083265A1 - Converter vessel support assembly - Google Patents
Converter vessel support assemblyInfo
- Publication number
- CA2083265A1 CA2083265A1 CA002083265A CA2083265A CA2083265A1 CA 2083265 A1 CA2083265 A1 CA 2083265A1 CA 002083265 A CA002083265 A CA 002083265A CA 2083265 A CA2083265 A CA 2083265A CA 2083265 A1 CA2083265 A1 CA 2083265A1
- Authority
- CA
- Canada
- Prior art keywords
- vessel
- trunnion ring
- support assembly
- suspension
- trunnion
- 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.)
- Abandoned
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
- C21C5/4633—Supporting means
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)
Abstract
A converter vessel support assembly consists of a basic oxygen converter vessel (1) for metals processing, suspended from a trunnion ring (9) which provides trunnions (13) for pivotally mounting the vessel (1) during use. The vessel (1) must be relatively immovably secured within the trunnion ring (9) by means which accomodate relative thermal expansion and contraction of the vessel (1) and the trunnion ring (9). This is achieved by two brackets (17) fastened to the vessel at diametrically opposite positions and which engage in clamping guides (31) fastened to the trunnion ring in diametrically opposed positions to allow relative radial displacement of the brackets (17) and a further bracket (19) which locates in simple guide in form of packing members to prevent circumferential movement of the bracket (19) but allow radial and axial movement.
Description
WO 91/18119 PCI`/GB91/00782 1 -2~3326~
. . .
CONVERT~R VESSEL S~PPORT ASSEMB~Y
. ~
This invention relates to a support assembly for a vessel, such as a basic oxyg-n converter vessel.
A vessel for conta in~ng molten iron during its conversion to steel consists of a refractory lined shell which has a base, a central cylindrioal portlon and an upper frusto-conical portion leading to an open top. A
substantially circular trunnion ring, having a pair of outwardly extending diametrically opposed trunnions, -surrounds the cylindrical portion of the vessel and is rigidly, but removably, secured thereto. Plvotting the trunnlon ring about the trunnions enables the vessel to be tipped.
The support assembly must be able to hold the vessel securely within the trunnion ring at any angle of rotation of the ring about the axis of the trunnions. The support assembly must transmit;rotatlonal torgues applied to the trunnion ring, via the trunnions, to the vessel.
It will readily be appreciated that the vessel will expand and contract in the radial direction at a rate dissimilar to that of the trunnlon ring due to the dlfference of temperature between the hot vessel and the trunnion ring.
If the supports engaging between the vessel and trunnion ring are adapted to accommodate the relatlve radial expanslon, as is desirable,allow relative radial expansion they will also ~ allow undesirable relative displacement of the vessel and the :~
. . .
CONVERT~R VESSEL S~PPORT ASSEMB~Y
. ~
This invention relates to a support assembly for a vessel, such as a basic oxyg-n converter vessel.
A vessel for conta in~ng molten iron during its conversion to steel consists of a refractory lined shell which has a base, a central cylindrioal portlon and an upper frusto-conical portion leading to an open top. A
substantially circular trunnion ring, having a pair of outwardly extending diametrically opposed trunnions, -surrounds the cylindrical portion of the vessel and is rigidly, but removably, secured thereto. Plvotting the trunnlon ring about the trunnions enables the vessel to be tipped.
The support assembly must be able to hold the vessel securely within the trunnion ring at any angle of rotation of the ring about the axis of the trunnions. The support assembly must transmit;rotatlonal torgues applied to the trunnion ring, via the trunnions, to the vessel.
It will readily be appreciated that the vessel will expand and contract in the radial direction at a rate dissimilar to that of the trunnlon ring due to the dlfference of temperature between the hot vessel and the trunnion ring.
If the supports engaging between the vessel and trunnion ring are adapted to accommodate the relatlve radial expanslon, as is desirable,allow relative radial expansion they will also ~ allow undesirable relative displacement of the vessel and the :~
2 ~ 8 ~ ~ 6 j - 2 - ~
trunnion ring. It is an ob~ect of the present invention to provide a vessel support assembly which allevlates the aforementioned technical problem; is simple to assemble and disas~emble so that the trunnion ring can readily be separated and attached to the vessel for maintenance and has as few components and minimum weight posslble.
Accordingly there is provided a support assembly for a converter vessel compriQing a trunnion ring having diametrically opposed trunnions pro~ecting outwardly therefrom, the ves~el being suspended in the trunnion ring characterised in that the vessel is suspended exclusively by a pair of suspenslon means, the suspension mèaos being located, one below each of the trunnions and adapted to accommodate relative radial expansion and contraction of the w s~el and trunnion rlng and a gulde ~eans engaging between tbe vessel and the trunnion ring at a position circumferentially-spaced from the ~usp-nsion m-ans to maintain the relative positions of the axe~ of the ves~el and the trunnion ring. f ~: :
It will be appreciated that the as~embly defined above will accommodate relative radial expanslon of the - trunnion ring and vessel but is of simple and hence relatively inexpenslve aonstruction. Because the number of components is kept to a minimum, amongst other reasons, the vessel and trunnion ring assembly is relatively light weight.
. , ~ 3 ~ 208~26~
~ .
The two suspension brackets and the associated suspension means secure the vessel w~thin the trunnlon ring and they support the whole weight of the vessel and its contents The function of the guide means ls to centralise the vessel in the trunnion ring and the guide means does not provide any support for the vessel It does, however, prevent the vessel from being moved within th- trunnion rlng in the direction parallel to the common axls of the trunnion pins According to another aspect of the preQent invention tbere is provid-d a m-thod of assembllng a trunnion rlng and converter vessel for susp-nsion theroof comprlsing the step~ of locating the trunnion ring over the ves~el so that a palr of coaxial trunnlons on th- trunnion ring overlie a pair of su~pension brackets mounted on the vessel and , engaging a radially pro~ecting member of a guide bracket ~; betw-en guide members adapted to prevent only circumferential . .
displacement of the guide bracket; and, clamping the susp-nsion brackets to the trunnion ring by guide and claw members adapted to permit only radial displacement of the bracket relative to the trunnion ring It will b- appreclated from the above method that assembly and disass-mbly of the trunnion ring and vessel suspension construction is conveniently guick and simple WO 91tl8119 PCI`/GB91/00782 ~nY~ S~ _ 4- ;-''.
In order that the invention may be more readily understood, it will now be described, by way of example only, with reference to the accompanying drawings, in which~
Figure 1 is a side view of a basic oxygen converter ~
vessel incorporating a support arrangement in accordance with `
the present invention;
Figure 2 is a front view of a suspension bracket forming part of the support arrangement; -Figure 3 is a front view of a guide bracket forming part of the support arrangement; and Figuré 4 is a side view of part of a basic oxygen converter vessel showing the trunnion pin and one of the suspension bracket~ of a support arrangement of the present lnvention.
A basic oxygen converter vessel 1 comprises a refractory lined met.al shell having a base portion, a central cylindrical portion 3, a frusto-conical upper portion 5 and an open top 7. The vessel is located within and supported in ~ a substantially circular :
~ ~.
.
Wo91/18119 PCT/GB91/00782 2~3265 trunnion ring 9 having a bottom flange ll and a pair of diametrically opposed outwardly extending trunnion pins `~
13. An annular slag shedder lS is connected to the top of the trunnion ring and to the vessel to protect the trunnion ring from molten metal. ~7' Tho vessel i8 supported within the trunnion ring by means which enable th- vessel to be removed from the ring, if necessary. To this end, the support for the vessel comprises a pair of suspension brackets 17 mount-d on the cylindrical part 3 of the vessel and located one beneath ach of the trunnion pins 13. A -guide bracket 19 is mounted on the cylindrical part of the ~essel at a position substantially mid-way between the brackets 17, Referring particularly to Figur-s 2 and 4, it can be ~een th~at each suspen~ion bracket 17 has a vertical leg 21 which is ~haped to confor to th- outer ~urface of the vesseI ~l and which is secured to the essel by means of bolts 23 which pass through the ~ ( ~
wall of the vessel and the vertical leg 21. At the upper end of the vertical leg 21 there is a hor~zontal ~ -leg 25 which has thickened blocks 27 fabr~icated into each of~ its nds. The horizontal leg 25 is secured to the vertical leg by ~tiffening plates 26.
To assemble the ring around the vessel, the vessel is positioned in the ring with the suspension plates 17 located beneath respective trunnion pins.
Wogl/l8ll9 PCT/GB91/00782 The upper faces of the blocks 27 on the brackets have been dressed to ensure good bracket contact with the bottom flange 11 on the trunnion ring A pair of stop members 29 are welded or otherwise secured to the underside of the flang- 11 A pair of claw members 31 are bolted to the flange ll by pre-stressed bolts 33 and each claw member has a projection whicb fits -~
underneath the portion 27 on the bracket As the bolts ~-33 are tightened, the claw members 31 are clamped to '~
the underside of the flange 11 The claw member~ 31 are accuratély maehined so as to fit, with the minimum of elearanee, between the braeket 17 and the stop members 29 , . . .
Eaeh elaw, member i8 ~eeured to the flange 11 by an appropriate number of bolts and the flange member .
11 may be strengthened, if neee-sary A minimum -~
~ clearance has to be provided between the elaw members, '~ ; the braek-t and the stop memb-rs to allow for expansion when th- vessel is filled with molten metal Referring now to Figure 3, it ean be seen that th- guide braek-t 19 is of similar eonstruetion to the suspension brackets 17 in that it eomprises a ertieal limb 21A and a horizontal limb 25A with thiekened portions 2~7A at opposite ends of the ,~ ~
horizonta~l portion Stop members 29A are secured to the underside of the flange 11 and packing members 31A
are located betwe-n the stop members 29A and the , . , . ., ~ : . . . , .. , ., .... ,- ( , WO 91t18119 PCr/GB91/~0782 , thickened portions 27A of the bracket 19.~ The packing members are bolted into position with thè minimum of~`~
clearance between the braiifket and the stop members 29A
but the packing members do not have a claw which fits - underneath the thickened portions 27A. The packing members 31A prevent lateral movement from occurring between the bracket 19 and the flange 11.
In all po-itionff~ of tllt, the w ssel is rigidly f3upported within the trunnion ring by the `
suspension brackets and the suspenf3ion members. The ,~ guide bracket only ff~erves to locate the ves;3el within '~ the trunnion ring. In this arrangement, therefor-, it wlll be appreciated that there i~ a two-point suspension of the vesse~ with an attitional guite means between the ~effff3sel and the trunnion ring.
Although the invention has been specifically e~emplified in relation to a ~basic osygen converter ~l vessel, it will be appreciated that the support arrangement of this invention can be applied to other types of furnace vessel.
f ~
I'`'` ~
::: :
trunnion ring. It is an ob~ect of the present invention to provide a vessel support assembly which allevlates the aforementioned technical problem; is simple to assemble and disas~emble so that the trunnion ring can readily be separated and attached to the vessel for maintenance and has as few components and minimum weight posslble.
Accordingly there is provided a support assembly for a converter vessel compriQing a trunnion ring having diametrically opposed trunnions pro~ecting outwardly therefrom, the ves~el being suspended in the trunnion ring characterised in that the vessel is suspended exclusively by a pair of suspenslon means, the suspension mèaos being located, one below each of the trunnions and adapted to accommodate relative radial expansion and contraction of the w s~el and trunnion rlng and a gulde ~eans engaging between tbe vessel and the trunnion ring at a position circumferentially-spaced from the ~usp-nsion m-ans to maintain the relative positions of the axe~ of the ves~el and the trunnion ring. f ~: :
It will be appreciated that the as~embly defined above will accommodate relative radial expanslon of the - trunnion ring and vessel but is of simple and hence relatively inexpenslve aonstruction. Because the number of components is kept to a minimum, amongst other reasons, the vessel and trunnion ring assembly is relatively light weight.
. , ~ 3 ~ 208~26~
~ .
The two suspension brackets and the associated suspension means secure the vessel w~thin the trunnlon ring and they support the whole weight of the vessel and its contents The function of the guide means ls to centralise the vessel in the trunnion ring and the guide means does not provide any support for the vessel It does, however, prevent the vessel from being moved within th- trunnion rlng in the direction parallel to the common axls of the trunnion pins According to another aspect of the preQent invention tbere is provid-d a m-thod of assembllng a trunnion rlng and converter vessel for susp-nsion theroof comprlsing the step~ of locating the trunnion ring over the ves~el so that a palr of coaxial trunnlons on th- trunnion ring overlie a pair of su~pension brackets mounted on the vessel and , engaging a radially pro~ecting member of a guide bracket ~; betw-en guide members adapted to prevent only circumferential . .
displacement of the guide bracket; and, clamping the susp-nsion brackets to the trunnion ring by guide and claw members adapted to permit only radial displacement of the bracket relative to the trunnion ring It will b- appreclated from the above method that assembly and disass-mbly of the trunnion ring and vessel suspension construction is conveniently guick and simple WO 91tl8119 PCI`/GB91/00782 ~nY~ S~ _ 4- ;-''.
In order that the invention may be more readily understood, it will now be described, by way of example only, with reference to the accompanying drawings, in which~
Figure 1 is a side view of a basic oxygen converter ~
vessel incorporating a support arrangement in accordance with `
the present invention;
Figure 2 is a front view of a suspension bracket forming part of the support arrangement; -Figure 3 is a front view of a guide bracket forming part of the support arrangement; and Figuré 4 is a side view of part of a basic oxygen converter vessel showing the trunnion pin and one of the suspension bracket~ of a support arrangement of the present lnvention.
A basic oxygen converter vessel 1 comprises a refractory lined met.al shell having a base portion, a central cylindrical portion 3, a frusto-conical upper portion 5 and an open top 7. The vessel is located within and supported in ~ a substantially circular :
~ ~.
.
Wo91/18119 PCT/GB91/00782 2~3265 trunnion ring 9 having a bottom flange ll and a pair of diametrically opposed outwardly extending trunnion pins `~
13. An annular slag shedder lS is connected to the top of the trunnion ring and to the vessel to protect the trunnion ring from molten metal. ~7' Tho vessel i8 supported within the trunnion ring by means which enable th- vessel to be removed from the ring, if necessary. To this end, the support for the vessel comprises a pair of suspension brackets 17 mount-d on the cylindrical part 3 of the vessel and located one beneath ach of the trunnion pins 13. A -guide bracket 19 is mounted on the cylindrical part of the ~essel at a position substantially mid-way between the brackets 17, Referring particularly to Figur-s 2 and 4, it can be ~een th~at each suspen~ion bracket 17 has a vertical leg 21 which is ~haped to confor to th- outer ~urface of the vesseI ~l and which is secured to the essel by means of bolts 23 which pass through the ~ ( ~
wall of the vessel and the vertical leg 21. At the upper end of the vertical leg 21 there is a hor~zontal ~ -leg 25 which has thickened blocks 27 fabr~icated into each of~ its nds. The horizontal leg 25 is secured to the vertical leg by ~tiffening plates 26.
To assemble the ring around the vessel, the vessel is positioned in the ring with the suspension plates 17 located beneath respective trunnion pins.
Wogl/l8ll9 PCT/GB91/00782 The upper faces of the blocks 27 on the brackets have been dressed to ensure good bracket contact with the bottom flange 11 on the trunnion ring A pair of stop members 29 are welded or otherwise secured to the underside of the flang- 11 A pair of claw members 31 are bolted to the flange ll by pre-stressed bolts 33 and each claw member has a projection whicb fits -~
underneath the portion 27 on the bracket As the bolts ~-33 are tightened, the claw members 31 are clamped to '~
the underside of the flange 11 The claw member~ 31 are accuratély maehined so as to fit, with the minimum of elearanee, between the braeket 17 and the stop members 29 , . . .
Eaeh elaw, member i8 ~eeured to the flange 11 by an appropriate number of bolts and the flange member .
11 may be strengthened, if neee-sary A minimum -~
~ clearance has to be provided between the elaw members, '~ ; the braek-t and the stop memb-rs to allow for expansion when th- vessel is filled with molten metal Referring now to Figure 3, it ean be seen that th- guide braek-t 19 is of similar eonstruetion to the suspension brackets 17 in that it eomprises a ertieal limb 21A and a horizontal limb 25A with thiekened portions 2~7A at opposite ends of the ,~ ~
horizonta~l portion Stop members 29A are secured to the underside of the flange 11 and packing members 31A
are located betwe-n the stop members 29A and the , . , . ., ~ : . . . , .. , ., .... ,- ( , WO 91t18119 PCr/GB91/~0782 , thickened portions 27A of the bracket 19.~ The packing members are bolted into position with thè minimum of~`~
clearance between the braiifket and the stop members 29A
but the packing members do not have a claw which fits - underneath the thickened portions 27A. The packing members 31A prevent lateral movement from occurring between the bracket 19 and the flange 11.
In all po-itionff~ of tllt, the w ssel is rigidly f3upported within the trunnion ring by the `
suspension brackets and the suspenf3ion members. The ,~ guide bracket only ff~erves to locate the ves;3el within '~ the trunnion ring. In this arrangement, therefor-, it wlll be appreciated that there i~ a two-point suspension of the vesse~ with an attitional guite means between the ~effff3sel and the trunnion ring.
Although the invention has been specifically e~emplified in relation to a ~basic osygen converter ~l vessel, it will be appreciated that the support arrangement of this invention can be applied to other types of furnace vessel.
f ~
I'`'` ~
::: :
Claims (7)
1. A support assembly for a converter vessel (1) comprising a trunnion ring (9) having diametrically opposed trunnions (13) projecting outwardly therefrom, the vessel (1) being suspended in the trunnion ring (9) characterised in that the vessel is suspended solely by a pair of suspension means (17), the suspension means (17) being located, one below each of the trunnions (13) and adapted to accommodate relative radial expansion and contraction of the vessel (1) and trunnion ring (9) and a guide means (19) engaging between the vessel (1) and the trunnion ring (9) at a position circumferentially spaced from the suspension means (17) to maintain the relative positions of the axes of the vessel (1) and the trunnion ring (9).
2. A support assembly according to claim 1 wherein each suspension means (17) and the guide means (19) comprises a bracket rigidly secured to the vessel (1), each bracket providing a radially projecting member (25, 25A) having radially extending edges abuted by paking members (31, 31A) which prevent displacement of the radially projecting members (25, 25A) in the circumferential direction only, each of the suspension means, only, having packing members (31) with a claw member to clamp the underside of the leg (25) to the trunnion ring (9).
3. A support assembly according to claim 2, wherein the packing members (31, 31A) are bolted, to the underside of the trunnion ring (9).
4. A support assembly according to claim 3 wherein the resistance to circumferential displacement or deformation of the guide means (31, 31A) is reinforced by stop members (29, 29A) welded to the trunnion ring (9).
5. A support assembly according to any of claims 2 to 4 wherein the brackets (17, 19) are secured to the vessel wall be means of a vertical leg 121, 21A) bolted to the wall.
6. A support assembly according to any one of the preceding claims wherein the trunnion ring (9) has a horizontal flange (11) projecting from its lowermost edge and from which the vessel is suspended.
7. A method of assembling a trunnion ring and converter vessel for suspension thereof comprising the steps of:
locating the trunnion ring over the vessel that a pair of coaxial trunnions on the trunnion ring overlie a pair of suspension brackets mounted on the vessel and engaging a radially projecting member of a guide bracket between packing members secured to the trunnion ring and adapted to prevent circumferential displacement of the guide bracket only, and clamping the suspension brackets to the trunnion ring by packing members comprising guide and claw parts adapted to permit only radial displacement of the suspension bracket relative to the trunnion ring.
locating the trunnion ring over the vessel that a pair of coaxial trunnions on the trunnion ring overlie a pair of suspension brackets mounted on the vessel and engaging a radially projecting member of a guide bracket between packing members secured to the trunnion ring and adapted to prevent circumferential displacement of the guide bracket only, and clamping the suspension brackets to the trunnion ring by packing members comprising guide and claw parts adapted to permit only radial displacement of the suspension bracket relative to the trunnion ring.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9011224.4 | 1990-05-18 | ||
GB909011224A GB9011224D0 (en) | 1990-05-18 | 1990-05-18 | Vessel support arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2083265A1 true CA2083265A1 (en) | 1991-11-19 |
Family
ID=10676242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002083265A Abandoned CA2083265A1 (en) | 1990-05-18 | 1991-05-17 | Converter vessel support assembly |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0527863A1 (en) |
JP (1) | JPH05507119A (en) |
CA (1) | CA2083265A1 (en) |
GB (1) | GB9011224D0 (en) |
WO (1) | WO1991018119A1 (en) |
ZA (1) | ZA913776B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9405521D0 (en) * | 1994-03-21 | 1994-05-04 | Davy Mckee Stockton | Converter vessel |
GB9405519D0 (en) * | 1994-03-21 | 1994-05-04 | Davy Mckee Stockton | A vessel support limited |
CN201141034Y (en) * | 2007-12-03 | 2008-10-29 | 中冶赛迪工程技术股份有限公司 | Pre-stress block seat mechanism of revolving furnace |
CN102072639B (en) * | 2010-12-31 | 2012-12-19 | 江苏丰东热技术股份有限公司 | Built-in heavy material carrying device of resistance furnace with muffler |
US11761047B2 (en) | 2021-07-28 | 2023-09-19 | Sms Group Gmbh | Suspension device for a converter |
WO2023006733A1 (en) | 2021-07-28 | 2023-02-02 | Sms Group Gmbh | Suspension device for a converter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
GB8605455D0 (en) * | 1986-03-05 | 1986-04-09 | Davy Mckee Stockton | Vessel support arrangement |
-
1990
- 1990-05-18 GB GB909011224A patent/GB9011224D0/en active Pending
-
1991
- 1991-05-17 CA CA002083265A patent/CA2083265A1/en not_active Abandoned
- 1991-05-17 WO PCT/GB1991/000782 patent/WO1991018119A1/en not_active Application Discontinuation
- 1991-05-17 ZA ZA913776A patent/ZA913776B/en unknown
- 1991-05-17 EP EP91909185A patent/EP0527863A1/en not_active Ceased
- 1991-05-17 JP JP91508964A patent/JPH05507119A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH05507119A (en) | 1993-10-14 |
ZA913776B (en) | 1992-03-25 |
EP0527863A1 (en) | 1993-02-24 |
WO1991018119A1 (en) | 1991-11-28 |
GB9011224D0 (en) | 1990-07-04 |
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Legal Events
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FZDE | Dead |