CN106011365A - Online quick repair method for converter vaporization fixed gas hood - Google Patents
Online quick repair method for converter vaporization fixed gas hood Download PDFInfo
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- CN106011365A CN106011365A CN201610552162.5A CN201610552162A CN106011365A CN 106011365 A CN106011365 A CN 106011365A CN 201610552162 A CN201610552162 A CN 201610552162A CN 106011365 A CN106011365 A CN 106011365A
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- China
- Prior art keywords
- petticoat pipe
- converter
- fixing
- protective plate
- slag
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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
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
-
- 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
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses an online quick repair method for a converter vaporization fixed gas hood. In metallurgical engineering, a method for quickly repairing a fixed gas hood in a steel plant converter primary dedusting vaporization system on line is analyzed, so that safety and reliability, economic feasibility and construction period guarantee, in online repair construction, of overhaul construction are achieved.
Description
Technical field
The present invention relates to metallurgical equipment service technique, particularly relate to a kind of fixing online fast repairing method of petticoat pipe of converter vaporization.
Background technology
Steelwork converter steel-making at present, the cooling system major part of its one-time dedusting has used evaporated cooling system the most, the feature of carburetion system is high temperature, high pressure, circulating cooling is effective, but the one-time dedusting skirt cover near converter position, fixing petticoat pipe, mobile petticoat pipe lower vertical section in carburetion system, owing to operating mode is severe, sour gas H under high temperature2S、SO2Deng corrosion, dedusting fan suction, granule during blowing is very serious to the erosion corrosion of above three position water pipes, on-site actual situations is transducer wall's abrasion, seriously corroded, pipe thickness became uneven even ruptures and leaks, according to Pipe thickness measurement situation, leakage point quantity, maintenance duration situation, select online fixing petticoat pipe pipeline to be carried out Bead weld repair process.
For the online reparation of pipeline, operation field temperature height, area stenosis, welding difficulty greatly, and relate to crossings on different level and hold concurrently high-rise working soot region, especially there may be accumulated slag in the petticoat pipe of top to fall, dangerous big, so adequate preparation must be carried out in advance, it is ensured that construction smoothly completes.Repairing fixing petticoat pipe for online, point following two situation is discussed:
, there is local pipe seepage in situation one: in convertor steelmaking process, situation is not very serious, is arranged in plan shutdown maintenance, repairs online for fixing petticoat pipe seepage pipeline；
Situation two: in convertor steelmaking process, occurs local pipe to leak, and situation ratio is more serious, needs to arrange for shutdown maintenance at once, repairs fixing petticoat pipe leakage area online.
For situation one, situation two, utilizing periodical repair or emergency repair time, repair online for fixing petticoat pipe, the on-the-spot greatest problem existed is potential safety hazard., crossings on different level big for operation field temperature height, area stenosis, welding difficulty is held concurrently high-rise working soot region, and these difficulty compare with potential safety hazard, carry out adequate preparation in advance, can overcome.Maximum potential safety hazard is exactly, and upwards, the accumulated slag situation in straight flue and corner flue, is very difficult confirmation to mobile petticoat pipe, or is also danger close during confirmation, and the accumulated slag in straight flue and corner flue may fall at any time and hurt sb.'s feelings.Fixing petticoat pipe at certain steelwork converter and repair in maintenance construction online, the most once occurred danger to start: one is builder and owner's spot check, and went up Converter Maintenance platform together and confirm accumulated slag situation in straight flue, the accumulated slag of unexpected several tons falls, and narrowly causes the accident；Two is my maintainer, and during repairing fixing petticoat pipe, the accumulated slag in straight flue and corner flue plunks down, and slips at one's side from maintainer, narrowly causes the accident.
Summary of the invention
The technical problem to be solved is, shortcoming for above prior art, a kind of fixing online fast repairing method of petticoat pipe of converter vaporization is proposed, the method quickly repaired online for the fixing petticoat pipe in steelwork converter one-time dedusting carburetion system is analyzed, and emphasis solves to overhaul safe and reliable, the economical rationality of online repairing construction of constructing and the duration ensures.
In order to solve above-mentioned technical problem, the technical scheme is that and be accomplished by: a kind of fixing petticoat pipe online fast repairing method of converter vaporization is provided, comprises the following steps:
(1) before converter shutdown maintenance, last stove purges in utilizing oxygen rifle to petticoat pipe, shakes slag, and removing part adheres to unstable accumulated slag；
(2) converter blowing out, fire door 90 ° backward, stop the supple of gas or steam, have a power failure, pressure release of cutting off the water, draining, steam discharge, cooling, scarfing cinder, blower fan keeps 800-1000 to turn, and A, B rifle and sublance move to overhaul position；
(3) close charge door, oxygen muzzle, sublance mouth nitrogen manually-operated gate and list, close fixing petticoat pipe terminal valve, open all sewage draining valves pressure release of fixing petticoat pipe, blowdown, all fixing petticoat pipe sewage draining valves are closed in blowdown after terminating, closing charging valve and auto state is set as manual mode, hopper is concentrated in emptying；
(4) fixing petticoat pipe on-bne repair repair welding is listed, insert hole from oxygen rifle and place downwards cage and illumination, safe anti-falling rope, maintainer's wear safety belt and CO alarm, wear anti-goggles enter the cage internal accumulated slag situation of observation petticoat pipe and clear up, fixing petticoat pipe tube wall surface can be shown in that accumulated slag is cleared up, and cage, illumination are removed after terminating by cleaning in time；
(5) inspection platform is pitched Converter bottom and is fixed cat ladder by stokehold, simultaneously close off skirt cover oil cylinder valve, stokehold utilizes disassembling furnace machine to coordinate, the most ready-made protective plate is hung on converter trunnion ring, steel wire rope is managed, utilizing driving to coordinate and protective plate is hung desired location, protective plate supporting leg installed below is also welded on backing ring, inserts hole from oxygen rifle and places the fall prevention rope of hanging safety belt；
(6) fixing petticoat pipe leak source can be processed after above-mentioned protected working completes, weld；Petticoat pipe repair welding terminates, and removes in order；
(7) protective plate is hung converter platform, tears cat ladder open by disassembling furnace machine cooperation, and inspection platform is put back in situ by fork truck cooperation, and delisted, maintenance terminates on-the-spot cleaning, hands over.
The present invention limits technical scheme, the fixing online fast repairing method of petticoat pipe of aforesaid converter vaporization further, and in described step (1), purging gas uses nitrogen, and during oxygen rifle purging, shake slag, near revolving furnace fume hood, each layer platform personnel dodge or withdraw.
Beneficial effects of the present invention is as follows:
The present invention analyzes fixing petticoat pipe water pipe and leaks down in various degree, the maintenance condition of construction that online reparation and off-line are repaired, emphasis is it is considered that on the premise of guaranteeing construction safety, accelerating repair schedule, ensure repair quality, emphasis solves to overhaul safe and reliable, the economical rationality of online repairing construction of constructing and the duration ensures.
Accompanying drawing explanation
Figure 1Reparing process flow process for the present invention is illustratedFigure。
Figure 2Construct signal for the present inventionFigure。
Detailed description of the invention
The present invention is described in further detail below:
Embodiment
1
The fixing online fast repairing method of petticoat pipe of a kind of converter vaporization that the present embodiment provides, flow processSuch as figure 1Shown in, comprise the following steps:
(1) before converter shutdown maintenance, last stove purges in utilizing oxygen rifle to petticoat pipe, shakes slag, and removing part adheres to unstable accumulated slag；Purging gas uses nitrogen, and during oxygen rifle purging, shake slag, near revolving furnace fume hood, each layer platform personnel dodge or withdraw；
(2) converter blowing out, fire door 90 ° backward, stop the supple of gas or steam, have a power failure, pressure release of cutting off the water, draining, steam discharge, cooling, scarfing cinder, blower fan keeps 800-1000 to turn, and A, B rifle and sublance move to overhaul position；
(3) close charge door, oxygen muzzle, sublance mouth nitrogen manually-operated gate and list, close fixing petticoat pipe terminal valve, open all sewage draining valves pressure release of fixing petticoat pipe, blowdown, all fixing petticoat pipe sewage draining valves are closed in blowdown after terminating, closing charging valve and auto state is set as manual mode, hopper is concentrated in emptying；
(4) fixing petticoat pipe on-bne repair repair welding is listed, insert hole 1 from oxygen rifle and place downwards cage and illumination, safe anti-falling rope, maintainer's wear safety belt and CO alarm, wear anti-goggles enter the cage internal accumulated slag situation of observation petticoat pipe and clear up, fixing petticoat pipe pipe 6 wall surface can be shown in that accumulated slag is cleared up, and cage, illumination are removed after terminating by cleaning in time；
(5) inspection platform is pitched Converter bottom and is fixed cat ladder by stokehold, simultaneously close off skirt cover oil cylinder valve, stokehold utilizes disassembling furnace machine to coordinate, the most ready-made protective plate 3 is hung on converter trunnion ring 2, steel wire rope 4 is managed, utilizing driving 5 cooperation that protective plate 3 is hung desired location, protective plate supporting leg installed below 7 is also welded on backing ring 2, inserts hole 1 from oxygen rifle and places the fall prevention rope of hanging safety belt；
(6) fixing petticoat pipe leak source can be processed after above-mentioned protected working completes, weld；Petticoat pipe repair welding terminates, and removes in order；
(7) protective plate is hung converter platform, tears cat ladder open by disassembling furnace machine cooperation, and inspection platform is put back in situ by fork truck cooperation, and delisted, maintenance terminates on-the-spot cleaning, hands over.
Danger maximum in the present embodiment, it is simply that move petticoat pipe upwards, the accumulated slag situation in straight flue and corner flue, it is difficult to clean up and confirms, or confirmation and scale removal process are also danger closes, the accumulated slag in straight flue and corner flue, may fall at any time and hurt sb.'s feelings.The measure so must properly protect, installs protective plate and supporting leg, can be fixed petticoat pipe REPAIR WELDING operation under protective plate.
Above example is only the technological thought that the present invention is described, it is impossible to limiting protection scope of the present invention with this, every technological thought proposed according to the present invention, any change done on the basis of technical scheme, within each falling within scope.
Claims (2)
1. the fixing online fast repairing method of petticoat pipe of converter vaporization, it is characterised in that comprise the following steps:
(1) before converter shutdown maintenance, last stove purges in utilizing oxygen rifle to petticoat pipe, shakes slag, and removing part adheres to unstable accumulated slag；
(2) converter blowing out, fire door 90 ° backward, stop the supple of gas or steam, have a power failure, pressure release of cutting off the water, draining, steam discharge, cooling, scarfing cinder, blower fan keeps 800-1000 to turn, and A, B rifle and sublance move to overhaul position；
(3) close charge door, oxygen muzzle, sublance mouth nitrogen manually-operated gate and list, close fixing petticoat pipe terminal valve, open all sewage draining valves pressure release of fixing petticoat pipe, blowdown, all fixing petticoat pipe sewage draining valves are closed in blowdown after terminating, closing charging valve and auto state is set as manual mode, hopper is concentrated in emptying；
(4) fixing petticoat pipe on-bne repair repair welding is listed, insert hole from oxygen rifle and place downwards cage and illumination, safe anti-falling rope, maintainer's wear safety belt and CO alarm, wear anti-goggles enter the cage internal accumulated slag situation of observation petticoat pipe and clear up, fixing petticoat pipe tube wall surface can be shown in that accumulated slag is cleared up, and cage, illumination are removed after terminating by cleaning in time；
(5) inspection platform is pitched Converter bottom and is fixed cat ladder by stokehold, simultaneously close off skirt cover oil cylinder valve, stokehold utilizes disassembling furnace machine to coordinate, the most ready-made protective plate is hung on converter trunnion ring, steel wire rope is managed, utilizing driving to coordinate and protective plate is hung desired location, protective plate supporting leg installed below is also welded on backing ring, inserts hole from oxygen rifle and places the fall prevention rope of hanging safety belt；
(6) fixing petticoat pipe leak source can be processed after above-mentioned protected working completes, weld；Petticoat pipe repair welding terminates, and removes in order；
(7) protective plate is hung converter platform, tears cat ladder open by disassembling furnace machine cooperation, and inspection platform is put back in situ by fork truck cooperation, and delisted, maintenance terminates on-the-spot cleaning, hands over.
The fixing online fast repairing method of petticoat pipe of converter the most according to claim 1 vaporization, it is characterised in that: in described step (1), purging gas uses nitrogen, and during oxygen rifle purging, shake slag, near revolving furnace fume hood, each layer platform personnel dodge or withdraw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610552162.5A CN106011365B (en) | 2016-07-14 | 2016-07-14 | A kind of online fast repairing method of the fixed petticoat pipe of converter vaporization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610552162.5A CN106011365B (en) | 2016-07-14 | 2016-07-14 | A kind of online fast repairing method of the fixed petticoat pipe of converter vaporization |
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| Publication Number | Publication Date |
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| CN106011365A true CN106011365A (en) | 2016-10-12 |
| CN106011365B CN106011365B (en) | 2017-11-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113755665A (en) * | 2021-09-10 | 2021-12-07 | 广东韶钢松山股份有限公司 | Slag removal method for converter smoke hood |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963222A (en) * | 1975-02-28 | 1976-06-15 | Pennsylvania Engineering Corporation | Gas collecting hood for metallurgical vessel |
| CN2934251Y (en) * | 2006-07-28 | 2007-08-15 | 上海梅山钢铁股份有限公司 | Revolving furnace movable smoke guard sealing arrangement |
-
2016
- 2016-07-14 CN CN201610552162.5A patent/CN106011365B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963222A (en) * | 1975-02-28 | 1976-06-15 | Pennsylvania Engineering Corporation | Gas collecting hood for metallurgical vessel |
| CN2934251Y (en) * | 2006-07-28 | 2007-08-15 | 上海梅山钢铁股份有限公司 | Revolving furnace movable smoke guard sealing arrangement |
Non-Patent Citations (2)
| Title |
|---|
| 余成华: "转炉汽化烟道固定烟罩管壁减薄的原因分析", 《中国冶金》 * |
| 熊正威: "转炉固定烟罩异常失效原因及对策", 《机械工程师》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113755665A (en) * | 2021-09-10 | 2021-12-07 | 广东韶钢松山股份有限公司 | Slag removal method for converter smoke hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106011365B (en) | 2017-11-21 |
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