CN101851694B - Fast change method of large-scale converter movable gas hood - Google Patents
Fast change method of large-scale converter movable gas hood Download PDFInfo
- Publication number
- CN101851694B CN101851694B CN200910048597A CN200910048597A CN101851694B CN 101851694 B CN101851694 B CN 101851694B CN 200910048597 A CN200910048597 A CN 200910048597A CN 200910048597 A CN200910048597 A CN 200910048597A CN 101851694 B CN101851694 B CN 101851694B
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- China
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- gas hood
- movable gas
- converter
- furnace bottom
- jack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to the field of exhaust or separation devices of gas or smoke dusts in converters for processing and treating pig irons and discloses a fast change method of a large-scale converter movable gas hood. After a fixed gas hood is disassembled, the method sequentially comprises the following steps of: firstly, disassembling a cooling water pipe and rocking a converter (1) until the furnace bottom is arranged upwards; secondly, fixing a movable gas hood (2) on the converter (1) through a chain fall (4); thirdly, hoisting the movable gas hood (2) down through a crane (3); fourthly, hoisting a new movable gas hood onto the furnace bottom of the converter (1) through the crane (3) and fixing the new movable gas hood through the chain fall (4); fifthly, rocking the converter (1) until the furnace bottom is arranged upwards; and sixthly, reassembling a lifting chain of a hoisting device of the movable gas hood (2) and removing the chain fall (4). The invention has the advantages of simple steps, convenient operation, short construction period, less influence to production and high production efficiency.
Description
Technical field
The present invention relates to be used for the discharge or the tripping device field of the converter waste gas or the flue dust of the processing treatment pig iron, be specially a kind of fast change method of large-scale converter movable gas hood.
Background technology
Converter steelmaking is the domestic method that pig iron smelting is become steel, and converter steelmaking is in converter, to carry out.During steel-making, converter originally is in horizontality, after injecting liquid pig iron and corresponding auxiliary material, blasts air or oxygen, and rotates converter and make it upright, steel-making takes place in converter this moment react.Turn off the blast constantly when the steel-making reaction is tending towards accomplishing, and go back to level attitude to converter, the molten steel that is smelt is accomplished steelmaking process in converter introversion to ladle.The converter mouth can be discharged a large amount of waste gas and flue dust during steel-making, and these waste gas and flue dust are able to concentrate and reclaim through movable gas hood.Movable gas hood links to each other with hoisting appliance through erecting by overhang, cooperates the recovery requirement of bessemerizing process kind furnace gas, but the movable gas hood free lifting.Movable gas hood adopts the vaporization type of cooling, when reclaiming heat, reaches the purpose of cooled flue gas, is control RECOVERY OF CONVERTER GAS quality, realizes the key equipment that flue gas waste heat recovery and converter first and second dust removing effects are able to guarantee.When the large-scale converter movable gas hood of present smelter is changed; Traditional method adopts removes movable gas hood, and petticoat pipe hangs out to utilize the oxygen rifle to hang directly over the converter fixedly, removes the movable gas hood water-cooled tube then; Unclamp the movable gas hood elevating chain; Utilize the oxygen rifle to hang it is sling, adjust angle then, hang out the converter factory building from the top.There are three problems in this method for dismounting: 1. because the movable gas hood diameter is bigger; And the converter superjacent air space is narrow and small, cuts off steel structure platform or the crossbeam that may run in the hoisting process, the destructiveness of having to before the lifting give; Treating needs the structure of recovery many after movable gas hood returns dress, and construction cost is high; 2. need indexing after movable gas hood is sling, so that through the converter mill construction, adjustment angle difficulty is big, and potential safety hazard is many; 3. because of the many difficulty of lifting operation cause long construction period greatly, the converter off-time is long.Reduced production efficiency.
Summary of the invention
In order to overcome the defective of prior art, provide that a kind of step is simple, easy to operate, short construction period, little impact on production, replacing method that production efficiency is high, the invention discloses a kind of fast change method of large-scale converter movable gas hood.
The present invention reaches goal of the invention through following technical scheme:
A kind of fast change method of large-scale converter movable gas hood fixedly carries out behind the petticoat pipe in dismounting, and after changing movable gas hood, water-cooled tube is implemented pipe arrangement, flaw detection, work pressure test, it is characterized in that: carry out successively as follows:
A. remove the water-cooled tube of movable gas hood, converter is shaken to furnace bottom state up;
B. unclamp the elevating chain of movable gas hood lifting gear, movable gas hood is dropped on the furnace bottom, movable gas hood is fixed in the converter with jack;
C. then converter is shaken toward the stokehold direction, shake the position of platform to the converter, movable gas hood is hung down with crane at movable gas hood;
D. with crane new movable gas hood is winched on the converter furnace bottom, and fix with jack;
E. converter is shaken in the opposite direction, to furnace bottom position up;
F. return the elevating chain of dress movable gas hood lifting gear, extract jack.
Described fast change method of large-scale converter movable gas hood is characterized in that: the b step, its lifting weight of used jack was not less than 10 tons when being fixed on movable gas hood in the converter with jack.
The present invention cooperates through grate; On the platform of converter the place ahead, lift, old movable gas hood is turned down from the stokehold, need not remove a large amount of steel structure platform and the crossbeams in converter top; On only needing before the lifting to drop on old movable gas hood at the bottom of the converter; Fix with jack, cooperate through grate and accomplish petticoat pipe and hang down, it is identical to return the dress method.The invention has the beneficial effects as follows: step is simple, easy to operate, can change large-scale converter movable gas hood fast, can shorten construction period greatly; Tradition replacing method needs 24 hours at least; Adopt method of the present invention only to need to accomplish in 2 hours, because short construction period, so little impact on production, production efficiency is high, construction cost is low; Simultaneously can also guarantee construction quality, improve operational security.
Description of drawings
Fig. 1 is the structural representation of the converter of movable gas hood to be replaced among the present invention.
Embodiment
Below further specify the present invention through specific embodiment.
An existing converter 1 needs to change movable gas hood 2, and is as shown in Figure 1.Carry out successively as follows:
A. remove fixedly petticoat pipe;
B. remove the water-cooled tube of movable gas hood 2, converter 1 is shaken to furnace bottom state up;
C. unclamp the elevating chain of movable gas hood 2 lifting gears, movable gas hood 2 is dropped on the furnace bottom, with jack 4 movable gas hood 2 is fixed in the converter 1, used jack 4 its lifting weight are not less than 10 tons, and present embodiment employing lifting weight is 10 tons jack;
D. then with converter 1 toward the stokehold direction shake, shake platform 12 positions to the converter at movable gas hood 2, platform 12 be 9.6 meters square, with crane 3 movable gas hood 2 is hung down;
E. with crane 3 new movable gas hood 2 is winched on converter 1 furnace bottom, and fix with jack 4;
G. return the elevating chain of dress movable gas hood 2 lifting gears, extract jack 4.
H. water-cooled tube is implemented pipe arrangement, flaw detection, work pressure test, accomplish more changing jobs of movable gas hood 2.
Claims (1)
1. a fast change method of large-scale converter movable gas hood fixedly carries out behind the petticoat pipe in dismounting, and after changing movable gas hood, water-cooled tube is implemented pipe arrangement, flaw detection, work pressure test, it is characterized in that: carry out successively as follows:
A. remove the water-cooled tube of movable gas hood (2), converter (1) is shaken to furnace bottom state up;
B. unclamp the elevating chain of movable gas hood (2) lifting gear, movable gas hood (2) is dropped on the furnace bottom, with jack (4) movable gas hood (2) is fixed in the converter (1), its lifting weight of used jack (4) is not less than 10 tons;
C. then converter (1) is shaken toward the stokehold direction, shake platform (12) position to the converter, movable gas hood (2) is hung down with crane (3) at movable gas hood (2);
D. use crane (3) that new movable gas hood is winched on converter (1) furnace bottom, and fix with jack (4);
E. converter (1) is shaken in the opposite direction, to furnace bottom position up;
F. return the elevating chain of dress movable gas hood lifting gear, extract jack (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048597A CN101851694B (en) | 2009-03-31 | 2009-03-31 | Fast change method of large-scale converter movable gas hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048597A CN101851694B (en) | 2009-03-31 | 2009-03-31 | Fast change method of large-scale converter movable gas hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101851694A CN101851694A (en) | 2010-10-06 |
| CN101851694B true CN101851694B (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910048597A Expired - Fee Related CN101851694B (en) | 2009-03-31 | 2009-03-31 | Fast change method of large-scale converter movable gas hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101851694B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717365A (en) * | 2011-03-31 | 2012-10-10 | 上海宝冶集团有限公司 | Device and method for replacing lower rows of burners of quenching furnace, tempering furnace and normalizing furnace |
| CN105256098A (en) * | 2015-11-17 | 2016-01-20 | 莱芜钢铁集团有限公司 | Method for replacing movable smoke hood of revolving furnace |
| CN107513599A (en) * | 2016-06-17 | 2017-12-26 | 中冶宝钢技术服务有限公司 | Upper petticoat pipe hanging method based on BIM technology |
| CN108723317B (en) * | 2017-04-25 | 2020-04-03 | 中冶宝钢技术服务有限公司 | Online maintenance method of scarfing machine |
| CN109746542B (en) * | 2017-11-08 | 2020-12-04 | 中冶宝钢技术服务有限公司 | Method for replacing smoke hood of scarfing machine |
| CN109941899A (en) * | 2017-12-21 | 2019-06-28 | 广东韶钢松山股份有限公司 | A kind of hanging method of movable gas hood movable type replacement |
| CN109022672B (en) * | 2018-08-24 | 2020-03-10 | 中国二十冶集团有限公司 | Installation method of converter vaporization cooling flue during maintenance |
| CN115109888B (en) * | 2021-03-19 | 2024-09-06 | 中冶宝钢技术服务有限公司 | Method for mounting and dismounting converter skirt cover in overspan mode |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2487740Y (en) * | 2001-07-07 | 2002-04-24 | 重庆钢铁设计研究院 | Device for lifting and side-sliding hood of converter |
| CN101063177A (en) * | 2006-04-29 | 2007-10-31 | 上海宝冶建设有限公司 | Integral installation method for mammoth steel converter outer assemblage |
| CN201040699Y (en) * | 2007-05-16 | 2008-03-26 | 鞍钢集团设计研究院 | Lifting device for converter smoke helmet |
-
2009
- 2009-03-31 CN CN200910048597A patent/CN101851694B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2487740Y (en) * | 2001-07-07 | 2002-04-24 | 重庆钢铁设计研究院 | Device for lifting and side-sliding hood of converter |
| CN101063177A (en) * | 2006-04-29 | 2007-10-31 | 上海宝冶建设有限公司 | Integral installation method for mammoth steel converter outer assemblage |
| CN201040699Y (en) * | 2007-05-16 | 2008-03-26 | 鞍钢集团设计研究院 | Lifting device for converter smoke helmet |
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| Publication number | Publication date |
|---|---|
| CN101851694A (en) | 2010-10-06 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200941 Shanghai City, Baoshan District Road, No. four yuan, 168 Patentee after: Shanghai Baoye Group Corp., Ltd. Address before: 200941 Shanghai City, Baoshan District Road, No. four yuan, 168 Patentee before: Baoye Construction Co., Ltd., Shanghai |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20170331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |