CN113234882A - Converter equipment installation method - Google Patents
Converter equipment installation method Download PDFInfo
- Publication number
- CN113234882A CN113234882A CN202110505056.2A CN202110505056A CN113234882A CN 113234882 A CN113234882 A CN 113234882A CN 202110505056 A CN202110505056 A CN 202110505056A CN 113234882 A CN113234882 A CN 113234882A
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- furnace shell
- converter
- backing ring
- jack
- ear plate
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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
- C21C5/285—Plants therefor
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention provides a converter equipment installation method, which comprises the steps of firstly assembling a furnace shell assembly and a backing ring assembly which are segmented to the field to form a furnace shell and a backing ring, then connecting the backing ring and a hanging device, then erecting a rack which is convenient for the furnace shell and the backing ring to be in place on a ladle car under a charging span furnace, placing the furnace shell on the rack, then hoisting the backing ring to enable the position of the backing ring to be matched with the position of the furnace shell, and enabling a lower-section lug plate and the furnace shell to be welded to form a converter whole body.
Description
Technical Field
The invention relates to the field of converter steelmaking, in particular to a converter equipment installation method.
Background
The main equipment in the field of steel making of long-flow iron and steel enterprises is a converter steel making system, and the core equipment is a converter. The converter is usually installed by adopting a sliding jacking method, namely, a backing ring and a furnace shell are respectively assembled on the ground into a whole, then the backing ring and the furnace shell are sequentially hoisted to a sliding jacking rack above a buggy ladle, and after the relative position is aligned, a hanging device is installed. Therefore, the problem of hanging installation needs to be solved in the process of hoisting the converter and the backing ring, and the problem of integral hoisting is urgently needed to be solved in converter installation. .
Therefore, a converter equipment installation method which can simplify the process, reduce the overhead operation and improve the safety is needed.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a converter equipment installation method, so as to solve the problems of complicated installation operation, poor stability and high precision control difficulty of the traditional converter installation method that a sliding jacking method is adopted, i.e. the trunnion ring and the converter shell are firstly assembled on the ground into a whole, then the trunnion ring and the converter shell are successively hoisted on a sliding jacking rack above a buggy ladle, and after the relative positions are aligned, the installation is carried out aloft.
The invention provides a converter equipment installation method, which is characterized by comprising the following steps:
assembling the furnace shell assembly and the backing ring assembly which are segmented to the field to form a furnace shell and a backing ring;
connecting the backing ring with a hanging device; wherein, the hanging device comprises a lower section ear plate;
erecting a rack on a ladle car under a charging span furnace, and placing the furnace shell on the rack;
hoisting the backing ring to enable the position of the backing ring to be matched with the position of the furnace shell;
and welding the lower-section lug plate and the furnace shell to form the converter.
Preferably, the hanging device further comprises an upper section ear plate and a middle section joint.
Preferably, the upper section ear plate comprises two fixing plates;
the upper portion laminating of fixed plate the radian of trunnion ring, the lower part of fixed plate includes the fixed orifices, and the fixed orifices of two fixed plates set up relatively to the interval of two fixed plates with the joint phase in the middle section suits.
Preferably, the step of connecting the trunnion ring with the hanger comprises:
fixedly connecting the upper section ear plate with the backing ring;
connecting the middle section joint with the lower section ear plate, and placing the upper part of the middle section joint between the two fixing plates to ensure that the hole of the upper part of the middle section joint corresponds to the fixing hole;
and enabling the pin shaft to penetrate through the hole and the fixing hole on the upper part of the middle section joint, and enabling the upper section lug plate to be movably connected with the middle section joint.
Preferably, the step of connecting the mid-section joint to the lower ear plate comprises:
enabling the hole of the lower part of the middle joint to be opposite to the central hole of the lower ear plate by crane hoisting;
and a pin shaft penetrates through a hole at the lower part of the middle section joint and a central hole of the lower section ear plate, so that the middle section joint is movably connected with the lower section ear plate.
Preferably, in the step of hoisting the trunnion ring to match the position of the trunnion ring with the position of the furnace shell, the method comprises the following steps:
a first jack is clamped between the rack and the furnace shell;
hang through the driving lifting hook the backing ring set up the second jack on the rack, and make the backing ring sets up the second jack top, so that first jack the second jack is adjusted the rack the stove outer covering the positional relationship of backing ring makes the position of backing ring with the position phase-match of stove outer covering.
Preferably, a jack tool is preset on the furnace shell, and a support leg of the jack tool is fixedly connected with the furnace shell to form a closed structure; the jack tool is an open-shaped frame structure which comprises a cross beam, two supporting legs and is made of section steel.
Preferably, in the step of welding the lower ear plate to the furnace shell, the method comprises:
the opening of the lower section ear plate is arranged opposite to the furnace shell, and a jack is arranged between the lower end ear plate and the opening-shaped frame structure;
and enabling the bottom of the jack to be tightly abutted against the inner side of the cross beam of the open-shaped frame structure, and enabling the top of the jack to be tightly abutted against the top of the lower section of the lug plate, so that the opening of the lower section of the lug plate is welded on the furnace shell.
Preferably, after welding the lower ear plate and the furnace shell to form the converter, the method further comprises:
and dragging the converter to the position above the converter base by a hoisting or dumping traction ladle car to finish converter installation.
From the above description, it can be seen that the converter equipment installation method provided by the invention is characterized in that the furnace shell assembly and the backing ring assembly which are segmented to the field are assembled to form the furnace shell and the backing ring respectively, then the backing ring and the hanging device are connected, then a rack convenient for the furnace shell and the backing ring to be in place is erected on the ladle car under the feeding span furnace, the furnace shell is placed on the rack, the backing ring is hoisted to enable the position of the backing ring to be matched with that of the furnace shell, and the lower lug plate and the furnace shell are welded to form the converter whole body.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a flow chart of a converter installation method according to an embodiment of the present invention;
FIG. 2 is a view showing the construction of a trunnion ring and a hanger in the installation method of a converter equipment according to the embodiment of the present invention.
FIG. 3 is a schematic structural diagram of a process of hoisting and matching a trunnion ring and a furnace shell in a method for installing converter equipment according to an embodiment of the invention.
Fig. 4 is a schematic structural view of a welding process in the converter equipment installation method according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a jack fixture in a welding process in a converter equipment installation method according to an embodiment of the invention.
FIG. 6 is a schematic view showing a process of carrying the converter to the base of the converter in the installation method of the converter apparatus according to the embodiment of the present invention;
FIG. 7 is a schematic view showing the overall configuration of a converter in the installation method of the converter apparatus according to the embodiment of the present invention;
fig. 8 is a schematic top view of a converter in the installation method of the converter equipment according to the embodiment of the present invention.
Wherein the reference numerals include:
1. a furnace shell; 2. a backing ring; 3. a hanging device; 31. an upper section ear plate; 32. a middle joint; 33. a lower ear plate; 34. a fixing plate; 35. a fixing hole; 4. feeding, spanning a furnace and discharging a molten steel tank car; 5. a rack; 6. a central bore; 7. a first jack; 8. a second jack; 9. a jack tool; 10. a cross beam; 11. a support leg; 12. a jack; 13. a converter base; 14. a crane hook; 15. buttress;
the same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
The traditional converter installation is carried out by adopting a sliding jacking method, namely, the knocking-over ring and the furnace shell are respectively assembled on the ground into a whole, then the backing ring and the furnace shell are sequentially hoisted on a sliding jacking rack above a buggy ladle, and after the relative positions are aligned, the converter is installed at high altitude, so that the installation operation is complicated, the stability is poor, and the precision control difficulty is large.
In view of the above problems, the present invention provides a method for installing a converter apparatus, and the following describes in detail a specific embodiment of the present invention with reference to the accompanying drawings.
The following description of the exemplary embodiment(s) is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1, 2, 3, 4, 5, 6, and 7, the present invention provides a converter installation method, including:
s110: the furnace shell component and the backing ring component are installed in sections to form a furnace shell 1 and a backing ring 2;
s120: connecting the backing ring 2 with the hanging device 3; wherein, the hanging device 3 comprises a lower ear plate 33;
s130: erecting a rack 5 on a ladle car 4 under the charging span furnace, and placing a furnace shell 1 on the rack 5;
s140: hoisting the backing ring 2 to ensure that the position of the backing ring 2 is matched with the position of the furnace shell 1;
s150: and welding the lower lug plate 33 and the furnace shell 1 to form the converter.
In the embodiment shown in fig. 1, 2 and 3, step S110 is to assemble the components on the ground to form the complete furnace shell 1 and trunnion ring 2.
In the embodiment shown in fig. 1, 2, and 3, step S120 directly connects the trunnion ring 2 and the suspension device 3, wherein the suspension device 3 further includes an upper ear plate 31 and a middle joint 32, and the upper ear plate 31 includes two fixing plates 34; the radian of the backing ring 2 of the upper portion laminating of this fixed plate 34, the lower part of this fixed plate 34 includes fixed orifices 35, and the fixed orifices 35 of two fixed plates 34 set up relatively to the interval and the middle section joint 32 of two fixed plates 34 suit, and is concrete, in step S120, connect the step of backing ring 2 and cable suspension device 3, include:
s121: fixedly connecting the upper section ear plate 31 with the backing ring 2;
s122: connecting the middle section joint 32 with the lower ear plate 33, placing the upper part of the middle section joint 32 between two fixing plates, and enabling the hole of the upper part of the middle section joint 32 to correspond to the fixing hole 35;
s123: the pin shaft passes through the hole and the fixing hole 35 on the upper part of the middle section joint 32, so that the upper section ear plate 31 is movably connected with the middle section joint 32;
in step S122, the step of connecting the middle joint 32 and the lower ear plate 33 includes:
s122-1: the hole at the lower part of the middle section joint 32 is opposite to the central hole of the lower section ear plate 33 by the crane;
s122-2: a pin shaft penetrates through a hole at the lower part of the middle section joint 32 and a central hole 6 of the lower section ear plate 33, so that the middle section joint 32 is movably connected with the lower section ear plate 33; wherein the lower ear plate 33 is a structure similar to a triangle, the vertex angle of the top of the lower ear plate is similar to a triangle, a central hole 6 is arranged at the position close to the top, and an opening state is arranged between two bottom corners (openings) of the lower ear plate, so that the bottom of the lower ear plate 33 is more attached to the furnace shell 1.
Thus, in step S120, the suspension device 3 and the trunnion ring 2 are fixed on the ground, the middle section joint 32 of the suspension device 3 is movably connected with the upper section ear plate 31 and the lower section ear plate 33, and the support pier 15 can be arranged below the trunnion ring for installation when the upper section ear plate 31 and the middle section joint 32 are connected.
In the embodiment shown in fig. 1, 2, and 3, step S130 is to set up a rack 5 on a ladle car 4 under the charging bay, and place the furnace shell 1 on the rack 5, that is, place the furnace shell 1 on the rack 5 first, and then place the trunnion ring 2 on the rack 5, that is, hoist the furnace shell 1 to the rack first, the hoisting manner is not limited specifically, and can be hoisted by a crane hook, or can be hoisted by any other car body with hoisting function, and then hoist the trunnion ring 2 in step S140 to match the position of the trunnion ring 2 with the position of the furnace shell 1, and the hoisting manner is not limited specifically, and in this embodiment, the crane hook 14 is used for hoisting.
Specifically, in the embodiment shown in fig. 1, 2, and 3, in step S140, the step of hoisting the trunnion ring 2 to match the position of the trunnion ring 2 with the position of the furnace shell 1 includes:
s141-1: a first jack 7 is clamped between the rack 5 and the furnace shell 1;
s141-2: the backing ring 2 is hung through the crane hook 14, the second jack 8 is arranged on the furnace shell 1, the backing ring 2 is arranged above the second jack 8, the position relation of the rack 5, the furnace shell 1 and the backing ring 2 is adjusted through the first jack 7 and the second jack 8, the position of the backing ring 2 is matched with the position of the furnace shell 1, and then the step S150 is carried out, so that the lower section ear plate 33 connected to the backing ring 2 is welded with the furnace shell 1 to form the whole converter.
In the embodiments shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8, the method for installing a converter facility further includes: presetting a jack tool 9 on the furnace shell 1, and fixedly connecting support legs 11 of the jack tool 9 with the furnace shell 1 to form a closed structure; the jack fixture 9 includes a cross beam 10 and two legs 11, and an open frame structure made of steel sections, where the open frame structure may be a "]" -shaped structure, that is, a structure in which the two legs 11 are parallel to each other and perpendicular to the cross beam 10, or a non-perpendicular structure, and in this embodiment, the open frame structure is a "]" -shaped structure to enhance stability and provide a supporting force for the jack 12.
In the embodiments shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8, in step S140, the step of welding the lower ear plate 33 to the furnace shell 1 includes:
s142-1: the opening of the lower ear plate 33 is arranged opposite to the furnace shell 1, and a jack 12 is arranged between the lower ear plate 33 and the opening-shaped frame structure;
s142-2: the bottom of the jack 12 is abutted against the inner side of the cross member 10 of the open-ended frame structure, and the top of the jack 12 is abutted against the top of the lower-stage lug plate 33 so that the opening of the lower-stage lug plate 33 is welded to the shell 1.
In addition, in the embodiments shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, after welding the lower ear plate to the furnace shell, the method further includes:
step S160: and dragging the ladle car to carry the converter to the position above the converter base 13 by hoisting or dumping so as to finish the installation of the converter.
As described above, the converter equipment installation method provided by the invention is characterized in that the furnace shell assembly and the backing ring assembly which are segmented to the field are assembled to form the furnace shell and the backing ring respectively, then the backing ring and the hanging device are connected, then the rack which is convenient for the furnace shell and the backing ring to be in place is erected on the ladle car under the feeding span furnace, the furnace shell is placed on the rack, the backing ring is hoisted to enable the position of the backing ring to be matched with the position of the furnace shell, and the lower lug plate and the furnace shell are welded to form the converter.
The converter installation method according to the invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the installation method of the converter apparatus proposed by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (9)
1. A converter equipment installation method, comprising:
assembling the furnace shell assembly and the backing ring assembly which are segmented to the field to form a furnace shell and a backing ring;
connecting the backing ring with a hanging device; wherein, the hanging device comprises a lower section ear plate;
erecting a rack on a ladle car under a charging span furnace, and placing the furnace shell on the rack;
hoisting the backing ring to enable the position of the backing ring to be matched with the position of the furnace shell;
and welding the lower-section lug plate and the furnace shell to form the converter.
2. The converter installation method of claim 1, wherein the hanger further comprises an upper ear plate and a middle joint.
3. The converter installation method according to claim 2,
the upper section ear plate comprises two fixing plates;
the upper portion laminating of fixed plate the radian of trunnion ring, the lower part of fixed plate includes the fixed orifices, and the fixed orifices of two fixed plates set up relatively to the interval of two fixed plates with the joint phase in the middle section suits.
4. The converter installation method of claim 3, wherein the step of connecting the trunnion ring and the hanger comprises:
fixedly connecting the upper section ear plate with the backing ring;
connecting the middle section joint with the lower section ear plate, and placing the upper part of the middle section joint between the two fixing plates to ensure that the hole of the upper part of the middle section joint corresponds to the fixing hole;
and enabling the pin shaft to penetrate through the hole and the fixing hole on the upper part of the middle section joint, and enabling the upper section lug plate to be movably connected with the middle section joint.
5. The converter installation method of claim 4, wherein the step of coupling the middle section knuckle to the lower section ear plate comprises:
enabling the hole of the lower part of the middle joint to be opposite to the central hole of the lower ear plate by crane hoisting;
and a pin shaft penetrates through a hole at the lower part of the middle section joint and a central hole of the lower section ear plate, so that the middle section joint is movably connected with the lower section ear plate.
6. The converter equipment installation method according to claim 5, wherein in the step of hoisting the trunnion ring to match the position of the trunnion ring with the position of the furnace shell, the method comprises:
a first jack is clamped between the rack and the furnace shell;
hang through the driving lifting hook the backing ring set up the second jack on the rack, and make the backing ring sets up the second jack top, so that first jack the second jack is adjusted the rack the stove outer covering the positional relationship of backing ring makes the position of backing ring with the position phase-match of stove outer covering.
7. The converter installation method of claim 6, further comprising:
presetting a jack tool on the furnace shell, and fixedly connecting support legs of the jack tool with the furnace shell to form a closed structure; the jack tool is an open-shaped frame structure which comprises a cross beam, two supporting legs and is made of section steel.
8. The converter equipment installation method according to claim 7, wherein the step of welding the lower lug plate to the shell comprises:
the opening of the lower section ear plate is arranged opposite to the furnace shell, and a jack is arranged between the lower end ear plate and the opening-shaped frame structure;
and enabling the bottom of the jack to be tightly abutted against the inner side of the cross beam of the open-shaped frame structure, and enabling the top of the jack to be tightly abutted against the top of the lower section of the lug plate, so that the opening of the lower section of the lug plate is welded on the furnace shell.
9. The converter equipment installation method of claim 8, further comprising, after welding the lower ear plate to the shell to form a converter:
and dragging the converter to the position above the converter base by a hoisting or dumping traction ladle car to finish converter installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505056.2A CN113234882A (en) | 2021-05-10 | 2021-05-10 | Converter equipment installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505056.2A CN113234882A (en) | 2021-05-10 | 2021-05-10 | Converter equipment installation method |
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| Publication Number | Publication Date |
|---|---|
| CN113234882A true CN113234882A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110505056.2A Pending CN113234882A (en) | 2021-05-10 | 2021-05-10 | Converter equipment installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113234882A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118062748A (en) * | 2024-04-17 | 2024-05-24 | 包钢西北创业建设有限公司 | Converter hoisting and transporting device and replacing system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1284365A (en) * | 1969-09-06 | 1972-08-09 | Demag Ag | Improvements in mobile metallurgical vessels |
| CN1696315A (en) * | 2004-05-11 | 2005-11-16 | 中冶赛迪工程技术股份有限公司 | Equipment for hanging shell of converter |
| CN102010927A (en) * | 2010-12-28 | 2011-04-13 | 天津二十冶建设有限公司 | Integral hydraulic jacking inverted construction method of large converter |
| CN102094106A (en) * | 2011-03-21 | 2011-06-15 | 中国十九冶集团有限公司南京分公司 | Quick installation method for large four-point suspended type converter |
| CN202139255U (en) * | 2011-05-24 | 2012-02-08 | 天津二十冶建设有限公司 | Tooling platform for assembling converter body equipment |
| CN102485919A (en) * | 2010-12-06 | 2012-06-06 | 中冶天工集团有限公司 | Method for installing dummy shaft of converter connecting rod suspension system |
| CN102864278A (en) * | 2012-10-31 | 2013-01-09 | 中国二十二冶集团有限公司 | method for mounting large-scale converter shell and backing ring |
| CN103468850A (en) * | 2012-06-06 | 2013-12-25 | 中国二十冶集团有限公司 | Advance integrated installing method of converter |
| CN105710550A (en) * | 2016-03-31 | 2016-06-29 | 中冶南方工程技术有限公司 | Splicing and welding method of large converter five-connection-rod hanging device |
-
2021
- 2021-05-10 CN CN202110505056.2A patent/CN113234882A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1284365A (en) * | 1969-09-06 | 1972-08-09 | Demag Ag | Improvements in mobile metallurgical vessels |
| CN1696315A (en) * | 2004-05-11 | 2005-11-16 | 中冶赛迪工程技术股份有限公司 | Equipment for hanging shell of converter |
| CN102485919A (en) * | 2010-12-06 | 2012-06-06 | 中冶天工集团有限公司 | Method for installing dummy shaft of converter connecting rod suspension system |
| CN102010927A (en) * | 2010-12-28 | 2011-04-13 | 天津二十冶建设有限公司 | Integral hydraulic jacking inverted construction method of large converter |
| CN102094106A (en) * | 2011-03-21 | 2011-06-15 | 中国十九冶集团有限公司南京分公司 | Quick installation method for large four-point suspended type converter |
| CN202139255U (en) * | 2011-05-24 | 2012-02-08 | 天津二十冶建设有限公司 | Tooling platform for assembling converter body equipment |
| CN103468850A (en) * | 2012-06-06 | 2013-12-25 | 中国二十冶集团有限公司 | Advance integrated installing method of converter |
| CN102864278A (en) * | 2012-10-31 | 2013-01-09 | 中国二十二冶集团有限公司 | method for mounting large-scale converter shell and backing ring |
| CN105710550A (en) * | 2016-03-31 | 2016-06-29 | 中冶南方工程技术有限公司 | Splicing and welding method of large converter five-connection-rod hanging device |
Non-Patent Citations (1)
| Title |
|---|
| 刘宝瑄等: "《冶金机械检修手册》", 31 October 1992 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118062748A (en) * | 2024-04-17 | 2024-05-24 | 包钢西北创业建设有限公司 | Converter hoisting and transporting device and replacing system |
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Application publication date: 20210810 |