CN101397596A - Construction method for blast furnace bustle pipe integral installation - Google Patents

Construction method for blast furnace bustle pipe integral installation Download PDF

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Publication number
CN101397596A
CN101397596A CNA2008101199464A CN200810119946A CN101397596A CN 101397596 A CN101397596 A CN 101397596A CN A2008101199464 A CNA2008101199464 A CN A2008101199464A CN 200810119946 A CN200810119946 A CN 200810119946A CN 101397596 A CN101397596 A CN 101397596A
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CN
China
Prior art keywords
bustle pipe
integral
blast furnace
construction
tons
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Pending
Application number
CNA2008101199464A
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Chinese (zh)
Inventor
冯国忠
王二禄
谢滨
褚荣福
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Shougang Corp
Beijing Shougang Construction Group Co Ltd
Original Assignee
Shougang Corp
Beijing Shougang Construction Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Shougang Corp, Beijing Shougang Construction Group Co Ltd filed Critical Shougang Corp
Priority to CNA2008101199464A priority Critical patent/CN101397596A/en
Publication of CN101397596A publication Critical patent/CN101397596A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an integral installation and construction method of a blast furnace hot blast circular duct, which belongs to the blast furnace construction technique field. On a preassemble platform, the integral preassemble of a premanufactured hot blast circular duct pipeline single-piece is carried out, then the integral hot blast circular duct is divided into 4 to 8 parts and welded to be pipeline components respectively; then group numbering and disassembling are carried out. Then fitting up, levelling and spotting are carried out on an air inlet platform for forming a full circle, and an integral body is formed by installing and welding. Later, a hoisting hanger is installed by using a blast furnace main body frame bridge, and the blast furnace hot blast circular duct is lifted to a proper position steadily by one-time operation for completing the integral installation. By adopting the method, the problems of high expense, large risk, low efficiency and low precision of fragment lifting are solved. Particularly in the integral installation stage, fastness is the more extrusive benefit, which shortens the occupied time in the subject construction progress greatly.

Description

Construction method for blast furnace bustle pipe integral installation
Technical field
The invention belongs to the blast furnace technical field of construction, particularly relate to a kind of construction method for blast furnace bustle pipe integral installation, be particularly useful for that blast furnace is newly-built, bustle pipe is installed in enlarging and the overhauling reform engineering.
Background technology
The installation of blast-furnace hot-air surrounding pipes at present, general adopt " segmentation installation method "." segmentation installation method " be with make early stage, after the 42 trifle bustle pipe pipe numbers of prepackage after qualified disintegrate, by being built up in the ground large-scale crane in the high furnace main body outside, handling is to tuyere platform, arrive the installation site by numbering with windlass segmentation handling again, temporarily fixing one by one with jack, centering, assembling, spot welding; For preventing distortion when welding, can only take the segmentation welding.After treating that assembly welding is finished, adjust bustle pipe installation site and levelness, bustle pipe is installed is afterwards hung.
Adopt the installation method of above-mentioned traditional bustle pipe to exist following problem: special-purpose crane need be set, the expense height, have a big risk; In addition, efficient is low, precision is low; Particularly segmental hoisting welding time that puts in place long, influence the main body construction progress, need take the time of total duration.
Summary of the invention
The object of the present invention is to provide a kind of construction method for blast furnace bustle pipe integral installation, the problem that solved segmental hoisting expense height that present tradition " segmentation installation method " exists, have a big risk, efficient is low, precision is low; Shortened a difficult problem that takies the main body construction progress.
The technical scheme steps that adopts:
(1) on pre-assembling platform 1, with the bustle pipe pipeline single-piece of making in advance, carry out the integral body prepackage, again according to the lifting ability of bustle pipe pipeline rigidity and weight handling equipment, whole bustle pipe is divided into 4~8 groups, be welded into conduit assembly 2 respectively with every group, check confirm errorless after, press group #.
(2) for guaranteeing that bustle pipe conduit assembly 2 reaches technical requirements when assembly welding becomes a full circle, with bustle pipe conduit assembly 2, hang respectively on the tuyere platform 5, in place one by one then on bustle pipe bearing 4, leveling, centering become a full circle, and assembly welding becomes as a whole 3;
(3) with bustle pipe conduit assembly 2, hang respectively on the tuyere platform 5, in place one by one then on bustle pipe bearing 4, leveling, centering become a full circle, and assembly welding becomes a whole bustle pipe 3.
(4) utilize bustle pipe upper mounting plate crossbeam 7, set up fixed pulley group 9, set up running block 10 in whole bustle pipe lifting position, as lifting device, carry out integral hoisting with windlass 11, installation is finished in one-time-reach-place.
In step (2) construction, the bustle pipe pipe saddle is formed by arc, back up pad and base plate welding.Bearing arc radian utilizes the plate bending rolls roll-forming after determining according to bustle pipe pipeline radius.
In step (3) construction, emit bustle pipe cross centre line and circumferential line with survey meter on platform, in the position that does not influence counterpart and installation Holder for hanging household utensiles the bustle pipe bearing is set, bearing is with adjusting backing plate leveling and fixing with the platform welding.Afterwards, the bustle pipe pipeline is in place one by one.Earlier with the threeway centering, press the interface order then with each section bustle pipe pipeline centering when in place, form behind the full circle each interface connecting again, spot welding is fixed.Check each size and planeness once more, confirm bustle pipe to be welded into an integral body after errorless.
In step (4), at first utilize 4 symmetric Eight Diagrams beams on the bustle pipe upper mounting plate crossbeam, set up 80 tons of tackleblock of 4 covers, tackleblock is built up in bustle pipe respectively and hangs the place.In addition with 45 tons of windlasss that are used to draw; Be built up in respectively between bustle pipe upper mounting plate south, the north post on the crossbeam, the traction rope on every windlass is wrapped on 80 tons of tackleblock by 2 10 tons of leading sheaves.In addition, before the bustle pipe lifting, earlier the vertical suspension rod of all bustle pipes is in place, and will be higher than the actual installation position.Purpose is after the bustle pipe lifting arrives the installation site, to be easy to fast fixedly bustle pipe.
Concentric after installing for guaranteeing bustle pipe with body of heater, after the bustle pipe lifting arrives the installation site, 4 horizontal jacks are set in the position of bustle pipe cross center extended line, be used to adjust the concentricity of bustle pipe and body of heater.
The invention has the beneficial effects as follows: in bustle pipe installation work individual event project under construction, adopt the complete installation constructional method, expense is low, precision is high, quick.Bustle pipe prepackage, bustle pipe pipeline group are welded into to integral body does not influence main body construction.Bustle pipe integral hoisting time spent that puts in place is few, has shortened the time that takies main body construction, has improved installation effectiveness.
Description of drawings
Fig. 1 bustle pipe assembly welding platform synoptic diagram.Wherein, pre-assembling platform 1, bustle pipe conduit assembly 2.
Fig. 2 bustle pipe bearing master looks synoptic diagram.Wherein, bustle pipe integral body 3, bustle pipe bearing 4.
Synoptic diagram is looked on Fig. 3 bustle pipe bearing left side.Wherein, the bustle pipe support 4.
The main synoptic diagram of looking of Fig. 4 bustle pipe assembling.Wherein, bustle pipe integral body 3, bustle pipe bearing 4, tuyere platform 5, blast furnace framework 6, bustle pipe upper mounting plate crossbeam 7.
The main synoptic diagram of looking of Fig. 5 bustle pipe lifting.Wherein, bustle pipe integral body 3, fixed pulley group 9,10,5 tons of windlasss 11 of running block, leading sheave 12.
Fig. 6 bustle pipe lifting schematic top plan view.Wherein, 8,5 tons of windlasss 11 of Eight Diagrams beam.
Specific implementation method
Below in conjunction with embodiment of the present invention is described shown in specific implementation method and the figure:
1, bustle pipe is made
The bustle pipe pipeline confirms to related data according to Design Requirement Drawing before making that the dimension limit deviation after the steel plate cutting is ± 1mm that the difference of two catercorner lengths is not more than 3mm.Mark four medullary rays, and dash with sample and to make the visible marking.Bustle pipe rolls with plate bending rolls; Behind cans, meet the radius-of-curvature of design code.With the model inspection gap of not fitting: butt weld place is not more than 3mm, and other positions are not more than 1mm.The vertical missing of pipe crimping end face and medullary ray is not more than 3mm.The planeness deviation must not be greater than 1mm/m.The butt weld inwall flushes, and the inwall alignment tolerance is not more than 1mm.
Single tube roll by above-mentioned standard adjust qualified after, portion adds weldering and supports within it, prevents from depositing, deforming in the handling process.Because of the bustle pipe merogenesis is made, for guaranteeing complete installation each the arm correct position of back that puts in place, each tap wouldn't perforate.
2, bustle pipe prepackage
The integral body prepackage is carried out in bustle pipe segmentation welding back on pre-assembling platform.Before the prepackage, on platform, mark cross centre line, bustle pipe outer edge line, building site interface control line, the vertical boom support of bustle pipe and stiffener medullary ray, after the collated correct, with the prepackage in place of bustle pipe segmental hoisting.
After integral body is formed in the bustle pipe prepackage, check, measure, adjust each size.After qualified, vertical boom support of bustle pipe and stiffener medullary ray are returned on the bustle pipe, charge and attack the visible marking with sample with the line bob.
3, the bustle pipe assembly welding is become an integral body
The bustle pipe pipeline hangs on the tuyere platform with the segmentation of 4000t.m tower crane, afterwards, with the jack cooperation bustle pipe pipeline is placed on the bustle pipe bearing.After pipeline is in place,, press the interface order then, forms behind the full circle again each interface, check that the errorless back of each size welds, bustle pipe is welded into as a whole connecting with each segment pipe centering earlier with the threeway centering.
4, bustle pipe complete installation
The bustle pipe pipe diameter is 3.2 meters; Central diameter is 25.8 meters; Gross weight is 171.774 tons; Mounting height is 22.300 rice; Settling time is to carry out after the upper mounting plate Vierendeel girder installation of air port.
(1) lifting device is set up
Utilize 4 symmetric Eight Diagrams beams of bustle pipe upper mounting plate crossbeam, hang Liang Chu at bustle pipe and establish 80 tons of fixed pulley groups of 4 covers; Establish 80 tons of running blocks of 4 covers at whole bustle pipe suspension centre place, be built up in respectively on bustle pipe upper mounting plate south, the north intercolumniation crossbeam as 45 tons of windlasss that draw; Employed traction is adopted the wireline of 21.5 millimeters of φ respectively with rope on every windlass, is wrapped on 80 tons of fixed, running blocks by 2 10 tons of leading sheaves.
(2) prepare before the lifting
Earlier the vertical suspension rod of all bustle pipes is in place before the bustle pipe lifting, and will be higher than the actual installation position.With 105 millimeters coupling shaft cards of φ jail of 4 lifting usefulness on 80 tons of tackleblock of 4 covers and the bustle pipe, 4 windlasss begin to promote.Treat that wireline has just begun stressed back and stopped, 4 windlasss are adjusted, adjust windlass and the verticality that goes out door guide roller, utilize pressing plate that 4 windlasss are firmly fixing after reaching requirement, prevent windlass traction rope sideslip in bustle pipe lifting process.Examination is hung once earlier after windlass is fixedly finished, and each parts, the band-type brake of all suspension centres and windlass carried out detailed inspection.Confirm that back out of question is fastened at 4 suspension centre places of bustle pipe and hang 4 15 meters dish chis, the bustle pipe medullary ray is aimed at dish chi scale 0 place, and preparation work is ready.
(3) integral hoisting
After all finishing, preparation work begins lifting.Observation dish chi scale in the lifting process reaches four Heave Here level of synchronization and rises.Stop after arriving the installation site when bustle pipe hoists, 4 horizontal jacks are set, adjust the concentricity of bustle pipe and body of heater in the outer fix of bustle pipe cross center extended line.Simultaneously, measure, adjust each size and bustle pipe level.After reaching technical requirements, suspension rod penetrates boom hole.The suspension rod bottom is fixed with bearing pin, and complete installation is finished in top nut locking.
After the bustle pipe integral hoisting is finished, check each size, confirm to reach standard-required errorless after, slowly hoisting appliance and every temporary facilities are removed in carriage return.

Claims (4)

1, a kind of construction method for blast furnace bustle pipe integral installation is characterized in that, construction procedure is:
A, on pre-assembling platform (1), with the bustle pipe pipeline single-piece of making in advance, carry out integral body and pre-install, afterwards, whole bustle pipe is divided into 4~8 groups, be welded into conduit assembly (2) respectively with every group, press group #;
B, with bustle pipe conduit assembly (2), hang respectively on the tuyere platform (5), in place one by one then on bustle pipe bearing (4), leveling, centering become a full circle, assembly welding becomes as a whole (3);
C, utilize bustle pipe upper mounting plate crossbeam (7), set up fixed pulley group (9); Set up running block (10) in whole bustle pipe lifting position, as lifting device, carry out integral hoisting with windlass (11), installation is finished in one-time-reach-place.
2, according to the construction method for blast furnace bustle pipe integral installation described in the claim 1, it is characterized in that among the step b, on tuyere platform (5), with the jack cooperation bustle pipe conduit assembly (2) is placed on the bustle pipe bearing (4) that is formed by arc, back up pad and base plate assembly welding, it is as a whole that assembly welding becomes.
3, according to the constructional method described in the claim 1, it is characterized in that, among the step c, utilize the 4 symmetric Eight Diagrams beams (8) on the bustle pipe upper mounting plate crossbeam (7), hang Liang Chu at bustle pipe and establish 4 cover 80 tons of fixed pulley groups (9); Establish 4 cover 80 tons of running blocks (10) at whole bustle pipe suspension centre place, as 4 the 5 tons windlasss (11) of traction; Be built up in respectively on the bustle pipe upper mounting plate crossbeam (7); Every windlass (11) is gone up employed traction and is adopted the wireline of 21.5 millimeters of φ respectively with restricting, and is wrapped on 80 tons of fixed pulley groups (9), the running block (10) by 2 10 tons leading sheaves (12).
4, according to the constructional method described in the claim 1, it is characterized in that, after the bustle pipe lifting arrives the installation site, 4 horizontal jacks are set, be used to adjust the concentricity of bustle pipe and body of heater in the position of bustle pipe cross center extended line.
CNA2008101199464A 2008-09-12 2008-09-12 Construction method for blast furnace bustle pipe integral installation Pending CN101397596A (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101698894B (en) * 2009-10-26 2011-06-29 中国十七冶建设有限公司 High-altitude segmented in-position installation method for blast-furnace hot-air surrounding pipes
CN101852479B (en) * 2009-04-02 2012-07-04 五冶集团上海有限公司 Segmental out-of-sequence installation method of pipeline
CN101709344B (en) * 2009-11-25 2012-07-18 中国一冶集团有限公司 Method for hoisting terrace for furnace top raw gas pipeline
CN103692195A (en) * 2013-12-20 2014-04-02 中国五冶集团有限公司 Pipe installation method
CN104033650A (en) * 2013-03-07 2014-09-10 上海宝冶集团有限公司 Ring furnace pipe prefabrication and mounting method
CN104862498B (en) * 2015-06-08 2016-08-24 中冶建工集团有限公司 Electron beam furnace installation engineering method
CN106119454A (en) * 2016-08-31 2016-11-16 中国十九冶集团有限公司 The installation method of blast-furnace hot-air surrounding pipes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852479B (en) * 2009-04-02 2012-07-04 五冶集团上海有限公司 Segmental out-of-sequence installation method of pipeline
CN101698894B (en) * 2009-10-26 2011-06-29 中国十七冶建设有限公司 High-altitude segmented in-position installation method for blast-furnace hot-air surrounding pipes
CN101709344B (en) * 2009-11-25 2012-07-18 中国一冶集团有限公司 Method for hoisting terrace for furnace top raw gas pipeline
CN104033650A (en) * 2013-03-07 2014-09-10 上海宝冶集团有限公司 Ring furnace pipe prefabrication and mounting method
CN104033650B (en) * 2013-03-07 2016-08-10 上海宝冶集团有限公司 A kind of annular furnace pipe prefabrication installation method
CN103692195A (en) * 2013-12-20 2014-04-02 中国五冶集团有限公司 Pipe installation method
CN104862498B (en) * 2015-06-08 2016-08-24 中冶建工集团有限公司 Electron beam furnace installation engineering method
CN106119454A (en) * 2016-08-31 2016-11-16 中国十九冶集团有限公司 The installation method of blast-furnace hot-air surrounding pipes

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Open date: 20090401