CN105369002A - Repair tooling of hot-blast branch pipe lining of hot-blast furnace and repair method thereof - Google Patents

Repair tooling of hot-blast branch pipe lining of hot-blast furnace and repair method thereof Download PDF

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Publication number
CN105369002A
CN105369002A CN201510915293.0A CN201510915293A CN105369002A CN 105369002 A CN105369002 A CN 105369002A CN 201510915293 A CN201510915293 A CN 201510915293A CN 105369002 A CN105369002 A CN 105369002A
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China
Prior art keywords
hot blast
hot
valve
manifold
repair
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CN201510915293.0A
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CN105369002B (en
Inventor
李海峰
董军
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Tianjin Iron and Steel Group Co Ltd
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Tianjin Iron and Steel Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B9/00Stoves for heating the blast in blast furnaces
    • C21B9/10Other details, e.g. blast mains

Abstract

The invention relates to a repair tooling of a hot-blast branch pipe lining of a hot-blast furnace and a repair method thereof. The repair tooling comprises split type structural support track beams including a left support track beam and a right support track beam, wherein the support track beams are connected with end flanges of hot-blast branch pipes, two sliding trolleys are installed on the support track beams in a sliding mode, and insulation blind plates are respectively hoisted on each sliding trolley. The hot-blast branch pipe lining of the hot-blast furnace is repaired in a hot state of the hot-blast furnace by utilizing the repair tooling of the hot-blast branch pipe lining of the hot-blast furnace, and the repair method mainly comprises the following steps that after the blast furnace blows down, firstly, the hot-blast furnace is put in a cold stoking state, the condition that the states of all valves meet operation requirements on site is confirmed, the lining repair tooling is installed, an insulation wall is built, the lining is repaired, the repair tooling and the insulation wall are disassembled, and the hot-blast furnace is reassembled and started to normally supply air. According to the scheme, the lining of the hot-blast furnace cannot be influenced by low temperature, and the repair can be quickly realized; in an actual repair process, the safety of operating personnel is guaranteed, and the repair difficulty is reduced; additionally, a hot-blast valve is installed with time saving and labor saving, and the operating efficiency is greatly improved.

Description

A kind of hot air furnace hot air arm repairing inner liner frock and method for repairing and mending thereof
Technical field
The invention belongs to repairing technique field in hotblast stove actual production, particularly relate to a kind of hot air furnace hot air arm repairing inner liner frock and method for repairing and mending thereof.
Background technology
As everyone knows, hotblast stove works long hours, be positioned at the heat-sealing arm of hotblast stove both sides refractory materials can aging, the problem such as come off, once come off to have a strong impact on hot blast manifold, especially hot blast valve position; It is out of service that current mending option needs hotblast stove to carry out, and equitemperature drops to certain temperature and is, operator wear proximity suit and repair, but hotblast stove is once at low temperatures, the refractory materials of its inwall, there will be large-arealy to relax, come off; Considering hotblast stove can not be out of service, and must repair being not less than under 800 degree, operator cannot carry out repairing work at all at such temperatures.
Such as my hot blast manifold local, company 2000m3 blast furnace 3# hot air furnace hot air valve both sides liner is badly damaged, and the refractory brick fragment frequently come off can cause hot blast valve to close and put in place, and then the just generation affecting hotblast stove is produced.For eliminating this potential safety hazard, iron work determines to process comparatively thoroughly this hot blast manifold liner.This scheme is formulated by iron work and overhauling company's joint research, and organizes enforcement in concert.Because hot blast manifold is seated in coal gas region, and need the equipment such as dismounting hot blast valve, narrow space, workload is large, and particularly in hot blast manifold, temperature is higher, construction operation difficulty is very large, corresponding capable security measures must be taked to ensure the operating environment of Seeding location, and whole repair process workload is large in addition, relates to multiple specialty, higher to the skill set requirements of maintenance teams and groups, need completing of comparatively tight site examining and repairing organizing ability safety; At coal gas region job, dangerous large.Hot blast valve tonnage is heavier, and surrounding environment is complicated, and valve dismounting assembling and mounting difficulty is larger.Ad hoc meter the present invention carrys out carrying out safely and fast and repairs for this reason, and is repair in the non-stop-machine state of hotblast stove.
Summary of the invention
The present invention provides a kind of under hot state, carry out hot air furnace hot air arm liner repairing frock and method for repairing and mending thereof for solving in known technology the technical problem that exists.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
A kind of hot air furnace hot air arm repairing inner liner frock, it is characterized in that: comprise supporting track beam, described supporting track beam adopts split-type structural, comprise left support track girder and right support track girder, as a whole supporting track beam is connected by detachable web plate between left support track girder and right support track girder, limited block is provided with at the two ends of supporting track beam, lifting plate is respectively equipped with at the coupling end of left support track girder and right support track girder, the lifting plate of left support track girder and right support track girder is connected with the hot blast manifold end flanges of homonymy is detachable respectively, in the hot blast manifold of wherein said left support track girder plug-in mounting hot blast furnace side, right support track girder is inserted in the hot blast manifold of hot blast main pipe side, supporting track beam is slidably fitted with two sliding machines, each sliding machine is all lifted with heat insulation blind plate, described heat insulation blind plate comprises heat shield body, is equipped with thermofin in the both sides of heat shield body respectively by suspension member.
Utilize above-mentioned kind of hot air furnace hot air arm repairing inner liner frock, under the hot state of hotblast stove, carry out the repairing of hot air furnace hot air arm liner, concrete method for repairing and mending step is as follows:
1) supply air system of hotblast stove, is first closed; After blast furnace staying, first by blast fumance, hotblast stove is placed in cold stoking state, to ensure that hot blast in hotblast stove no longer outwardly, can overhaul construction;
2), hot blast valve is disassembled; When dismantling hot blast valve, pinning hot blast valve with wireline and jack, disassembling the various hydrodynamic lubrications, the valve plate water-cooled tube that are connected with hot blast valve, removing hot blast valve flange bolt, confirming reverse flow valve and 2 chimney valve standard-sized sheets afterwards; Except dismounting hot blast valve joint bolt and the dismounting of dismounting valve water inlet pipe routine, also adopt screw block to make as power the bellows segment of the hot blast manifold of hot blast valve both sides shrink, make the gap of hot blast valve end flanges distance hot blast manifold end flanges 20 ~ 30mm; And keep this state, hot blast valve is hung away by lifting rig, particularly at hot blast manifold circle distribution 4 screw block, correspondence is arranged on outside this side hot blast manifold end flanges respectively, the piston rod of described screw block is connected on the contiguous block of homonymy hot blast manifold outer wall, and described contiguous block is welded on the outer wall outside hot blast manifold flange;
3) the repairing frock as claimed in claim 1 made in advance, is placed;
2 blocks of heat insulation blind plates are hung with jack upper large portion in two flanges of blocking respectively, both sides are made all to form negative pressure, then the supporting track beam made in advance is put into hot blast manifold in bottom to assemble, and 2 walking dollies are installed, afterwards two blocks of heat insulation blind plates are coordinated mobile to hot blast manifold central position, make directly over supporting track beam to hot blast manifold, be connected with flange hole after centering and fix, complete the lifting of supporting track beam, and then respectively 2 blocks of heat insulation blind plates and walking dolly are connected;
4), in the outside of repairing frock, i.e. hot blast valve installation side, the two ends of hot blast manifold all assemble insulated wall;
Shift 2 blocks of heat insulation blind plates onto specified location successively, bottom is filled in real and is fixed simple and easy for heat insulation blind plate, tripartite confirms that arm environment possesses completely after people's condition, in the hot blast manifold of both sides, a stifled insulated wall is respectively built with clay brick by professional operating personnel, and gap refractory mortar is smeared sternly, recycling supporting track beam is that point of fixity welding channel-section steel cross bar and insulated wall are leaned on strictly solid, then is sealed by insulated wall gap spray material with spraying machine;
5) flame retardant coating be lining with in hot blast manifold between two insulated wall in cleanup step 4, makes the inwall of hot blast manifold leak outside completely; The refractory brick of damaged location internal breakdown and refractory matter are all removed and are cleaned out;
6) on the hot blast manifold inwall, exposed in steps of 5, welding mounts part;
7), at hot blast manifold inwall smear refractory materials, refractory materials comprises mount part in step 6 completely; Shell inside, hot blast manifold Fall of lining position, both sides is sprayed from bottom to top, about 100mm is thick, look for circle levelling after spraying puts in place, after having some strength, prop up overall punching block, and add cross bracing and fix, punching block outside is paved with malthoid and glues, end baffle coating butter, fabrication hole is opened above hotblast stove arm, build refractory matter by fabrication hole, and use vibrating head tamping, in material feeding to be poured after intensity, confirm stove burned and turn stewing oven-like state, chimney valve and reverse flow valve standard-sized sheet errorless after, pull down punching block
8), for installing hot blast valve, finishing both sides hot blast manifold port, makes its port and hot blast valve completely equipped; The instrument such as flat chisel and polishing machine is used thoroughly to clear up pipe flange mouth;
9) insulated wall in the hot blast manifold of both sides, is dismantled;
10), when disassembling above-mentioned steps 3, the repairing frock of placement; Thermal baffle pulled out and removes, cut off slipway beam and remove, guaranteeing foreign in arm;
11), return dress hot blast valve, and connect the pipeline corresponding on hot blast manifold;
12), repaired, and opened hotblast stove and normally blow.
The advantage that the present invention has and positively effect are: because the present invention adopts technique scheme, the repairing of hot air furnace hot air arm liner can be carried out under the hot state of hotblast stove, so both ensure that hotblast stove liner is not subject to low temperature effect, but also can realize fast repairing; In actual mending course, the security of operating personnel is guaranteed, and reduces the difficulty of repairing; And install and install hot blast valve more time saving and energy saving, substantially increase operating efficiency.
Accompanying drawing explanation
Fig. 1 is patcher's assembling structure schematic diagram of the present invention.
In figure: 1, supporting track beam; 1-1, left support track girder; 1-11, lifting plate; 1-2, right support track girder; 1-21, lifting plate; 1-3, web plate; 1-4, limited block; 1-5, sliding machine; 2, hot blast manifold; 2-1, end flanges; 3, heat insulation blind plate 3; 3-1, heat shield body; 3-2, suspension member; 3-3, thermofin; 4, screw block; 5, insulated wall; 6, hotblast stove.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of hot air furnace hot air arm repairing inner liner frock, comprise supporting track beam 1, described supporting track beam adopts split combination structure, comprise left support track girder 1-1 and right support track girder 1-2, connect as a whole supporting track beam 1 by detachable web plate 1-3 between left support track girder 1-1 and right support track girder 1-2, be provided with limited block 1-4 at the two ends of supporting track beam, object is to place in driving conditions and departs from supporting track beam; Be respectively equipped with lifting plate (1-11,1-21) at the coupling end of left support track girder 1-1 and right support track girder 1-2, the lifting plate of left support track girder and right support track girder is connected with the hot blast manifold 2 end flanges 2-1 of homonymy is detachable respectively; In wherein said left support track girder 1-1 plug-in mounting hot blast furnace side hot blast manifold 2, right support track girder 1-2 is inserted in the hot blast manifold of hot blast main pipe side; Supporting track beam is slidably fitted with two sliding machine 1-5, each sliding machine is all lifted with heat insulation blind plate 3, described heat insulation blind plate comprises heat shield body 3-1, is equipped with thermofin 3-3 in the both sides of heat shield body respectively by suspension member 3-2, play dual heat insulation effect, for subsequent job provides safeguard.
Utilize above-mentioned kind of hotblast stove 6 hot blast manifold repairing inner liner frock, under the hot state of hotblast stove, carry out the repairing of hot air furnace hot air arm liner, concrete method for repairing and mending step is as follows:
1) supply air system of hotblast stove, is first closed; After blast furnace staying, first by blast fumance, hotblast stove is placed in cold stoking state, to ensure that hot blast in hotblast stove no longer outwardly, can overhaul construction;
2), hot blast valve is disassembled; When dismantling hot blast valve, pinning hot blast valve with wireline and jack, disassembling the various hydrodynamic lubrications, the valve plate water-cooled tube that are connected with hot blast valve, removing hot blast valve flange bolt, confirming reverse flow valve and 2 chimney valve standard-sized sheets afterwards; Except dismounting hot blast valve joint bolt and the dismounting of dismounting valve water inlet pipe routine, also adopt screw block to make as power the bellows segment of the hot blast manifold of hot blast valve both sides shrink, make the gap of hot blast valve end flanges distance hot blast manifold end flanges 20 ~ 30mm; And keep this state, hot blast valve is hung away by lifting rig, particularly at hot blast manifold circle distribution 4 screw block, correspondence is arranged on outside this side hot blast manifold end flanges respectively, the piston rod of described screw block is connected on the contiguous block of homonymy hot blast manifold outer wall, and described contiguous block is welded on the outer wall outside hot blast manifold flange;
3) the repairing frock as claimed in claim 1 made in advance, is placed;
2 blocks of heat insulation blind plates are hung with jack upper large portion in two flanges of blocking respectively, both sides are made all to form negative pressure, then the supporting track beam made in advance is put into hot blast manifold in bottom to assemble, and 2 walking dollies are installed, afterwards two blocks of heat insulation blind plates are coordinated mobile to hot blast manifold central position, make directly over supporting track beam to hot blast manifold, be connected with flange hole after centering and fix, complete the lifting of supporting track beam, and then respectively 2 blocks of heat insulation blind plates and walking dolly are connected;
4), in the outside of repairing frock, i.e. hot blast valve installation side, the two ends of hot blast manifold all assemble insulated wall;
Shift 2 blocks of heat insulation blind plates onto specified location successively, bottom is filled in real and is fixed simple and easy for heat insulation blind plate, tripartite confirms that arm environment possesses completely after people's condition, in the hot blast manifold of both sides, a stifled insulated wall is respectively built with clay brick by professional operating personnel, and gap refractory mortar is smeared sternly, recycling supporting track beam is that point of fixity welding channel-section steel cross bar and insulated wall are leaned on strictly solid, then is sealed by insulated wall gap spray material with spraying machine;
5) flame retardant coating be lining with in hot blast manifold between two insulated wall in cleanup step 4, makes the inwall of hot blast manifold leak outside completely; The refractory brick of damaged location internal breakdown and refractory matter are all removed and are cleaned out;
6) on the hot blast manifold inwall, exposed in steps of 5, welding mounts part;
7), at hot blast manifold inwall smear refractory materials, refractory materials comprises mount part in step 6 completely; Shell inside, hot blast manifold Fall of lining position, both sides is sprayed from bottom to top, about 100mm is thick, look for circle levelling after spraying puts in place, after having some strength, prop up overall punching block, and add cross bracing and fix, punching block outside is paved with malthoid and glues, end baffle coating butter, fabrication hole is opened above hotblast stove arm, build refractory matter by fabrication hole, and use vibrating head tamping, in material feeding to be poured after intensity, confirm stove burned and turn stewing oven-like state, chimney valve and reverse flow valve standard-sized sheet errorless after, pull down punching block
8), for installing hot blast valve, finishing both sides hot blast manifold port, makes its port and hot blast valve completely equipped; The instrument such as flat chisel and polishing machine is used thoroughly to clear up pipe flange mouth;
9) insulated wall in the hot blast manifold of both sides, is dismantled;
10), when disassembling above-mentioned steps 3, the repairing frock of placement; Thermal baffle pulled out and removes, cut off slipway beam and remove, guaranteeing foreign in arm;
11), return dress hot blast valve, and connect the pipeline corresponding on hot blast manifold;
12), repaired, and opened hotblast stove and normally blow.
The above is only to preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solution of the present invention.

Claims (2)

1. a hot air furnace hot air arm repairing inner liner frock, it is characterized in that: comprise supporting track beam, described supporting track beam adopts split-type structural, comprise left support track girder and right support track girder, as a whole supporting track beam is connected by detachable web plate between left support track girder and right support track girder, limited block is provided with at the two ends of supporting track beam, lifting plate is respectively equipped with at the coupling end of left support track girder and right support track girder, the lifting plate of left support track girder and right support track girder is connected with the hot blast manifold end flanges of homonymy is detachable respectively, in the hot blast manifold of wherein said left support track girder plug-in mounting hot blast furnace side, right support track girder is inserted in the hot blast manifold of hot blast main pipe side, supporting track beam is slidably fitted with two sliding machines, each sliding machine is all lifted with heat insulation blind plate, described heat insulation blind plate comprises heat shield body, is equipped with thermofin in the both sides of heat shield body respectively by suspension member.
2. utilize above-mentioned kind of hot air furnace hot air arm repairing inner liner frock to carry out method for repairing and mending, it is characterized in that: the repairing carrying out hot air furnace hot air arm liner under the hot state of hotblast stove, concrete method for repairing and mending step is as follows:
1) supply air system of hotblast stove, is first closed; After blast furnace staying, first by blast fumance, hotblast stove is placed in cold stoking state, to ensure that hot blast in hotblast stove no longer outwardly, can overhaul construction;
2), hot blast valve is disassembled; When dismantling hot blast valve, pinning hot blast valve with wireline and jack, disassembling the various hydrodynamic lubrications, the valve plate water-cooled tube that are connected with hot blast valve, removing hot blast valve flange bolt, confirming reverse flow valve and 2 chimney valve standard-sized sheets afterwards; Except dismounting hot blast valve joint bolt and the dismounting of dismounting valve water inlet pipe routine, also adopt screw block to make as power the bellows segment of the hot blast manifold of hot blast valve both sides shrink, make the gap of hot blast valve end flanges distance hot blast manifold end flanges 20 ~ 30mm; And keep this state, hot blast valve is hung away by lifting rig, particularly at hot blast manifold circle distribution 4 screw block, correspondence is arranged on outside this side hot blast manifold end flanges respectively, the piston rod of described screw block is connected on the contiguous block of homonymy hot blast manifold outer wall, and described contiguous block is welded on the outer wall outside hot blast manifold flange;
3) the repairing frock as claimed in claim 1 made in advance, is placed;
2 blocks of heat insulation blind plates are hung with jack upper large portion in two flanges of blocking respectively, both sides are made all to form negative pressure, then the supporting track beam made in advance is put into hot blast manifold in bottom to assemble, and 2 walking dollies are installed, afterwards two blocks of heat insulation blind plates are coordinated mobile to hot blast manifold central position, make directly over supporting track beam to hot blast manifold, be connected with flange hole after centering and fix, complete the lifting of supporting track beam, and then respectively 2 blocks of heat insulation blind plates and walking dolly are connected;
4), in the outside of repairing frock, i.e. hot blast valve installation side, the two ends of hot blast manifold all assemble insulated wall;
Shift 2 blocks of heat insulation blind plates onto specified location successively, bottom is filled in real and is fixed simple and easy for heat insulation blind plate, tripartite confirms that arm environment possesses completely after people's condition, in the hot blast manifold of both sides, a stifled insulated wall is respectively built with clay brick by professional operating personnel, and gap refractory mortar is smeared sternly, recycling supporting track beam is that point of fixity welding channel-section steel cross bar and insulated wall are leaned on strictly solid, then is sealed by insulated wall gap spray material with spraying machine;
5) flame retardant coating be lining with in hot blast manifold between two insulated wall in cleanup step 4, makes the inwall of hot blast manifold leak outside completely; The refractory brick of damaged location internal breakdown and refractory matter are all removed and are cleaned out;
6) on the hot blast manifold inwall, exposed in steps of 5, welding mounts part;
7), at hot blast manifold inwall smear refractory materials, refractory materials comprises mount part in step 6 completely; Shell inside, hot blast manifold Fall of lining position, both sides is sprayed from bottom to top, about 100mm is thick, look for circle levelling after spraying puts in place, after having some strength, prop up overall punching block, and add cross bracing and fix, punching block outside is paved with malthoid and glues, end baffle coating butter, fabrication hole is opened above hotblast stove arm, build refractory matter by fabrication hole, and use vibrating head tamping, in material feeding to be poured after intensity, confirm stove burned and turn stewing oven-like state, chimney valve and reverse flow valve standard-sized sheet errorless after, pull down punching block
8), for installing hot blast valve, finishing both sides hot blast manifold port, makes its port and hot blast valve completely equipped; The instrument such as flat chisel and polishing machine is used thoroughly to clear up pipe flange mouth;
9) insulated wall in the hot blast manifold of both sides, is dismantled;
10), when disassembling above-mentioned steps 3, the repairing frock of placement; Thermal baffle pulled out and removes, cut off slipway beam and remove, guaranteeing foreign in arm;
11), return dress hot blast valve, and connect the pipeline corresponding on hot blast manifold;
12), repaired, and opened hotblast stove and normally blow.
CN201510915293.0A 2015-12-09 2015-12-09 A kind of hot air furnace hot air branch pipe repairing inner liner frock and its method for repairing and mending Active CN105369002B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109373949A (en) * 2018-12-07 2019-02-22 中国航发南方工业有限公司 A kind of turbo blade positioning pedestal manufacturing device
CN110527770A (en) * 2018-06-27 2019-12-03 广东韶钢松山股份有限公司 The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace
CN110643774A (en) * 2019-03-15 2020-01-03 广东韶钢松山股份有限公司 Method for removing blind plate in waste heat recovery area of blast furnace hot blast stove
CN111349736A (en) * 2020-03-31 2020-06-30 广东韶钢松山股份有限公司 Treatment process for reducing blocking frequency of blast furnace hot blast valve
CN112359155A (en) * 2020-10-30 2021-02-12 张家港宏昌钢板有限公司 Method for repairing local lining refractory falling of blast furnace top gas ascending pipeline

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102424872A (en) * 2011-12-01 2012-04-25 天津钢铁集团有限公司 Method for patching damaged blast furnace hot air pipeline inner liner in hot state
CN105018664A (en) * 2015-08-13 2015-11-04 广东韶钢松山股份有限公司 Rapid repairing technology of blast furnace hot blast stove pipeline
CN205258515U (en) * 2015-12-09 2016-05-25 天津钢铁集团有限公司 Frock is repaired to hot -blast furnace hot -blast branch pipe inside lining

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102424872A (en) * 2011-12-01 2012-04-25 天津钢铁集团有限公司 Method for patching damaged blast furnace hot air pipeline inner liner in hot state
CN105018664A (en) * 2015-08-13 2015-11-04 广东韶钢松山股份有限公司 Rapid repairing technology of blast furnace hot blast stove pipeline
CN205258515U (en) * 2015-12-09 2016-05-25 天津钢铁集团有限公司 Frock is repaired to hot -blast furnace hot -blast branch pipe inside lining

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110527770A (en) * 2018-06-27 2019-12-03 广东韶钢松山股份有限公司 The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace
CN109373949A (en) * 2018-12-07 2019-02-22 中国航发南方工业有限公司 A kind of turbo blade positioning pedestal manufacturing device
CN110643774A (en) * 2019-03-15 2020-01-03 广东韶钢松山股份有限公司 Method for removing blind plate in waste heat recovery area of blast furnace hot blast stove
CN110643774B (en) * 2019-03-15 2021-08-31 广东韶钢松山股份有限公司 Method for removing blind plate in waste heat recovery area of blast furnace hot blast stove
CN111349736A (en) * 2020-03-31 2020-06-30 广东韶钢松山股份有限公司 Treatment process for reducing blocking frequency of blast furnace hot blast valve
CN112359155A (en) * 2020-10-30 2021-02-12 张家港宏昌钢板有限公司 Method for repairing local lining refractory falling of blast furnace top gas ascending pipeline

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