CN105200173B - A kind of last furnace shell changes the method that crossed construction is changed with cooling wall - Google Patents
A kind of last furnace shell changes the method that crossed construction is changed with cooling wall Download PDFInfo
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- CN105200173B CN105200173B CN201510690385.3A CN201510690385A CN105200173B CN 105200173 B CN105200173 B CN 105200173B CN 201510690385 A CN201510690385 A CN 201510690385A CN 105200173 B CN105200173 B CN 105200173B
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Abstract
The method that crossed construction is changed with cooling wall is changed the invention discloses a kind of blast furnace casing, belongs to blast furnace technical field of construction.Its step is：A, often circle furnace shell to be replaced carried out etc. removing after piecemeal and change；B, determine furnace shell change sequence of construction；C, level-lowering damping down, fetch water, cool stove；D, tear belly pipe and medium and small set open, take off stove, 7 font plates are welded on cooling wall cooling water pipe on furnace shell, furnace shell while removing to change；Assembling movable hanging scaffold and lifting ring beam in E, stove；F, dismounting cooling wall；The furnace shell for immediately beginning to point good block in step B is being enclosed up and down, and changes furnace shell simultaneously at the position of opposite perforate, and is welded in outside；G, the piecemeal furnace shell finally installed, first weld furnace shell internal weld seams, finally weld the outside weld seam of piecemeal furnace shell.It not only optimizes the whole band piecemeal furnace shell order of replacing but also optimizes furnace shell and cooling wall replacing order, and the crossed construction of furnace shell and cooling wall can be realized to greatest extent, shortens the main line construction period.
Description
Technical field
Change to change with cooling wall and hand over the present invention relates to blast furnace technical field of construction, more particularly to a kind of blast furnace casing
The method for pitching construction.
Background technology
Blast furnace is used after certain time limit, because cooling wall breakage makes furnace shell bulge phenomenon occur because of deformation, or because of transformation
Removable parts furnace shell is needed, common sequence of construction is to remove cooling wall → replacing furnace shell → installation cooling wall, this construction method
Time is longer, and if the welding capacity that is needed using the method for first changing a circle and changing again the second circle during the replacing of furnace shell burst also very
Greatly, if changing most of furnace shell, furnace shell can be changed with whole circle, but this method needs large-scale lifting device, while large-scale
Temporary facility expense is high, and time-consuming, is changed so not being suitable for a small amount of furnace shell.For changing blast furnace cooling stave site operation bar
Part, typically changes cooling wall using platform is successively set up, that is, changes a circle cooling wall and put down, it is necessary to set up one layer of interim operation
Platform, problems with is had using above-mentioned traditional construction method：Time and effort consuming inefficiency, because of the narrow and small safety in construction site
Coefficient is low, how costly various manpower and materials inputs are, it is long to take the time of total lever factor.
Chinese invention patent, Authorization Notice No.：CN 102212630B, authorized announcement date：2012.09.05, one is disclosed
The construction method that blast furnace cooling stave is changed using the mode of movable hanging scaffold is planted, belongs to blast furnace technical field of construction.In Blast Furnace Bottom,
Make after movable hanging scaffold, the raising suspender of movable hanging scaffold is set, movable hanging scaffold is risen and is raised at installation cooling wall position, will
Hoist engine is locked, then locks safety rope, can carry out cooling wall installation.Movable hanging scaffold can also carry out radial expansion simultaneously, with full
Requirement in sufficient stove at different-diameter position.The problem that solid space installs large-tonnage object is solved, solution tradition is set up many
Layer platform exist efficiency it is low, be unfavorable for safe construction, it is costly and take the total lever factor time it is long the problem of；Ensureing to apply
On the basis of work safety, construction speed is accelerated, expense is reduced, the time for taking total lever factor is shortened.Its weak point is：
The construction method that the patent is used just for the replacing of cooling wall, only describes the construction problem for changing cooling wall, and it is by activity
Hanging scaffold and hoist engine are combined one and worked, and give the installation method of cooling wall, are not given for the method for dismounting of cooling wall
Go out.
The content of the invention
1. the invention technical problem to be solved
For prior art last furnace shell change with cooling wall change during exist the engineering time it is long the problem of, this
Invention provides a kind of blast furnace casing and changes the method that crossed construction is changed with cooling wall.It can be realized to greatest extent
The crossed construction of furnace shell and cooling wall, shortens the main line construction period.
2. technical scheme
To solve the above problems, the technical scheme that the present invention is provided is：
A kind of blast furnace casing changes the method that crossed construction is changed with cooling wall, and its step is：
A, often circle furnace shell to be replaced is subjected to piecemeal；
B, determine sequence of construction；
C, level-lowering damping down, fetch water, cool stove；
D, tear belly pipe and medium and small set open, take off stove, while tearing water pipe pad open, weld 7 font plates；
Assembling movable hanging scaffold and lifting ring beam in E, stove；
The cooling that bottom need to be changed at F, the furnace shell position and the position that need to be changed by order set in step B, dismounting
Wall, is removed after cooling wall, and the furnace shell for immediately beginning to point good block in step A is being enclosed up and down, and while more at the position of opposite perforate
Furnace shell is changed, and in the good furnace shell of outside welded and installed；While the cooling wall above the furnace shell position of disassembling, assembling and replacing；
G, the piecemeal furnace shell finally installed, first weld the internal weld seams of furnace shell, while the outside weld seam that welding has been changed,
After being soldered, changed in stove according to from bottom to top order and cooling wall is installed, while the outside for the piecemeal furnace shell that welding is finally installed
Weld seam；
H, with to space mud jacking between furnace shell and cooling wall, facing greatly in stove while removing outside cooling wall cooling water pipe, stove.
Preferably, furnace shell is often enclosed in step A and is divided into 8 pieces, 10 pieces or 12 pieces.
Preferably, if the more than circle of furnace shell, multi-turn are while piecemeal is changed in step F, the vertical seam difference between each circle is partly
The width of block cooling wall, in order to avoid form cross weld seam.
Preferably, in step F topmost one layer replacing cooling wall height be less than below cooling wall height.
Preferably, it is each up and down in the short transverse of the cooling wall of the one layer of replacing in the top in step F to reduce 10mm.
Preferably, coordinated between 7 font plates and furnace shell using jack and remove cooling wall.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) often circle furnace shell to be replaced is carried out piecemeal by the present invention；Often circle furnace shell is divided into 8 pieces, the purpose for the arrangement is that just
It is in place in the furnace shell of installation, while the opposite perforate of furnace shell can be carried out, you can so that the replacing speed of furnace shell improves nearly one
Times；
(2) present invention is according to furnace shell and cooling wall to be replaced, it is determined that the order of furnace shell and cooling wall is changed, because furnace shell
Replacing construction is relatively long, and the cooling wall of top, which is changed, can be not take up the main line duration；Stove can be so realized to greatest extent
The crossed construction of shell and cooling wall, shortens the main line construction period；Using prior art and equipment, make the replacing of last furnace shell with it is cold
But wall construction, which intersects, is carried out, and is compressed the construction period, is reached the purpose of the quick overhaul of blast furnace；
(3) assembling movable hanging scaffold and lifting ring beam in stove of the present invention；Without special lifting device, face greatly without complicated
Facility, construction technology is simple；
(4) enclosed if furnace shell of the present invention changes more than one, can be with multi-turn while piecemeal is changed, the vertical seam between each circle is differed
The width of half block cooling wall, in order to avoid forming cross weld seam, this replacing options one are the stability for considering furnace shell after perforate, and two are
If one encloses replacing, all weld seams will be welded when changing first lap, and circumferential weld when changing the second circle between two circles is again
Rewelded after cutting off, add unnecessary weld seam；
(5) cooling wall of the top one layer of the invention to be changed, it is desirable to which when cooling wall spare part makes, appearance and size is in height
Degree respectively reduces 10mm up and down on direction than former cooling wall, the purpose for the arrangement is that, after topmost the cooling wall of one layer of replacing is removed,
The cooling wall not changed thereon there may be the situation of sinking, prevent because insufficient height causes what part cooling wall can not be installed
Problem；
(6) present invention need not consider the possible caused body of heater unstability of furnace shell perforate, i.e., need not will change furnace shell top
Wt part is transferred on furnace body frame；
(7) one aspect of the present invention is because the repair time is short, and efficiency high so human cost is low, and then is reduced and overhauled into
This；On the other hand because make use of prior art and equipment, the equipment platform without building complex and expensive makes last furnace shell more
Change and intersect progress with cooling wall construction, compress the construction period, reduce further the cost of overhaul.
Brief description of the drawings
Fig. 1 is blast furnace sectional view；
Fig. 2 is two circle furnace shell expanded schematic diagrams.
Label declaration in schematic diagram：
1st, furnace shell；19th, upper piecemeal furnace shell one；13rd, upper piecemeal furnace shell two；15th, upper piecemeal furnace shell three；17th, upper piecemeal furnace shell
Four；29th, upper piecemeal furnace shell five；23rd, upper piecemeal furnace shell six；25th, upper piecemeal furnace shell seven；27th, upper piecemeal furnace shell eight；110th, lower piecemeal
Furnace shell one；14th, lower piecemeal furnace shell two；16th, lower piecemeal furnace shell three；18th, lower piecemeal furnace shell four；210th, lower piecemeal furnace shell five；24th, under
Piecemeal furnace shell six；26th, lower piecemeal furnace shell seven；28th, lower piecemeal furnace shell eight；2nd, cooling wall one；3rd, cooling wall two；4th, cooling wall three；
5th, cooling wall four；6th, cooling wall five；7th, movable hanging scaffold；8th, ring beam is lifted；9th, layered platform.
Embodiment
To further appreciate that present disclosure, with reference to drawings and Examples, the present invention is described in detail.
Embodiment 1
Enterprise's productivity effect improves to improve the efficiency of maintenance blast furnace in certain steel mill, proposes that a kind of blast furnace casing is changed
With the method for cooling wall replacing crossed construction, its step is：
A, often circle furnace shell to be replaced is subjected to piecemeal；Because every piece of cooling wall height is fixed, cooling wall is often enclosed high
Degree is also fixed, then, different blast furnaces, the height for often enclosing cooling wall is different, and the height of the often circle furnace shell of division is with often enclosing
The height of cooling wall is identical, often enclose furnace shell be divided into 8,10 or 12 pieces, if furnace shell piecemeal is more, polylith furnace shell will be carried out more
Change, can delay the main line duration, if furnace shell piecemeal is few, when changing every piece of furnace shell, the overall structure of blast furnace can be influenceed strong
Degree, it is impossible to ensure construction safety.This step is first to carry out theoretical planning according to the outer ring size of furnace shell to be replaced on blast furnace to set
Meter, in order to instruct real work；The furnace shell that the purpose of furnace shell piecemeal is easy for installing is in place, while pair of furnace shell can be carried out
Face perforate, you can so that the replacing speed raising of furnace shell will by about one time.
B, determine sequence of construction；According to furnace shell and cooling wall to be replaced, it is determined that the order of furnace shell and cooling wall is changed, this
Sample can realize the crossed construction of furnace shell and cooling wall to greatest extent, shorten the main line construction period, herein the main line construction period
Refer to the time for changing furnace shell.
C, level-lowering damping down, fetch water, cool stove；The replacing that reality is carried out on the basis of both of the aforesaid step is planned is installed
Work.
D, tear belly pipe, medium and small set open, take off stove, i.e., remove material remaining in blast furnace, while tear water pipe pad, 7 font plates of weldering open,
Cooling wall is removed for convenient, is prepared to change furnace shell；
Assembling movable hanging scaffold 7 and lifting ring beam 8 in E, stove；Movable hanging scaffold 7 and lifting ring beam 8 are circle, without spy
Different lifting device, faces facility, construction technology is simple greatly without complicated；It is that formal dismounting work is carried out according to step A-E
Sufficient preparation.
The cooling wall that F, the furnace shell position and the position bottom that need to be changed by order set in step B, dismounting need to be changed,
Remove after cooling wall, the furnace shell for immediately beginning to point good block in step A is being enclosed up and down, and changes stove simultaneously at the position of opposite perforate
Shell, and the good furnace shell of welded and installed on outside blast furnace platform；Cooling wall above the furnace shell position of disassembling, assembling and replacing, and welding simultaneously
Connect mounted cooling wall；
If the more than circle of furnace shell, it should which multi-turn simultaneously change by piecemeal, the vertical seam difference half block cooling wall between respectively enclosing
Width, in order to avoid form cross weld seam.This replacing options one are the stability for considering furnace shell after perforate, and two be if one encloses
Change, all weld seams will be welded when changing first lap, circumferential weld when changing the second circle between two circles is rewelded after cutting off again, is increased
Add unnecessary weld seam, and lost time, extend the duration.
Topmost the height of the cooling wall of one layer of replacing is less than cooling wall height below, to install cooling wall reserved one
Fixed height space, best, topmost the cooling wall of one layer of replacing is each up and down in the height direction reduces 10mm, so does
Purpose is that after topmost the cooling wall of one layer of replacing is removed, the cooling wall not changed thereon is due to by Action of Gravity Field, Ke Nengcun
In the situation of sinking, prevent because insufficient height causes the problem of part cooling wall can not be installed.
Because furnace shell replacing construction is relatively long, the cooling wall for so doing top is changed and furnace shell replacing progress simultaneously, can
To be not take up the main line duration；The crossed construction of furnace shell and cooling wall can be realized to greatest extent, shorten the main line construction period.
G, the piecemeal furnace shell finally installed, first weld the internal weld seams of furnace shell, while the outside weld seam that welding has been changed,
After being soldered, changed in stove according to lower and upper order and cooling wall is installed, while the outside weldering for the piecemeal furnace shell that welding is finally installed
Seam；Compared with whole circle furnace shell of the prior art is changed, the present invention is changed using furnace shell piecemeal, in each change, every piece of stove
Shell reduces compared to whole circle furnace shell weight, without considering the possible caused body of heater unstability of furnace shell perforate, i.e., need not will change stove
The wt part on shell top is transferred on furnace body frame.
H, with to space mud jacking between furnace shell and cooling wall, being filled and cooled down with refractory material outside cooling wall cooling water pipe, stove
Gap between wall and furnace shell, faces greatly while removing in stove, faces refer to movable hanging scaffold 7, lifting ring beam 8 and layered platform 9 greatly.Profit
With prior art and equipment, the replacing and cooling wall construction for making last furnace shell intersect progress, compress the construction period, reach that blast furnace is fast
The purpose of fast overhaul.
This method not only optimizes the whole band piecemeal furnace shell order of replacing but also optimizes furnace shell and cooling wall replacing order, can
The crossed construction of furnace shell and cooling wall is realized to greatest extent, shortens the main line construction period.
Embodiment 2
Such as Fig. 1, furnace shell 1 is furnace shell to be replaced, and cooling wall 1 is the cooling wall of furnace shell position to be replaced, cooling wall 23
It is the cooling wall that need to be changed with cooling wall 34, cooling wall 45 and cooling wall 56 are the cooling wall being changed without.
Such as Fig. 2, by furnace shell, 1 point is upper circle furnace shell 11 and lower circle furnace shell 12, and both of which is divided into 8 pieces, upper circle furnace shell 11
Correspondence is divided into piecemeal furnace shell 1, upper piecemeal furnace shell 2 13, upper piecemeal furnace shell 3 15, upper piecemeal furnace shell 4 17, upper piecemeal
Furnace shell 5 29, upper piecemeal furnace shell 6 23, upper piecemeal furnace shell 7 25, upper piecemeal furnace shell 8 27；
It is lower circle furnace shell 12 correspondence be divided into lower piecemeal furnace shell 1, lower piecemeal furnace shell 2 14, lower piecemeal furnace shell 3 16, under
Piecemeal furnace shell 4 18, lower piecemeal furnace shell 5 210, lower piecemeal furnace shell 6 24, lower piecemeal furnace shell 7 26, lower piecemeal furnace shell 8 28.
The wherein step be the same as Example 1 of preparation, remaining step is as follows：
1st, cooling wall 1 and cooling wall 23 that the position and 1 its underpart of the furnace shell 1 that need to be changed need to be changed are removed；Blocked breaking
The furnace shell on ground, tuyere zone and following part is fallen into during the dismounting above tuyere zone of the furnace shell that removes and cooling wall position from furnace roof
Transported when being removed with cooling wall from cast house；
2nd, the lower section for the cooling wall 34 that movable hanging scaffold need to extremely be changed is risen；
3rd, removes while changing furnace shell 1 and cooling wall 34 is installed, the replacing of wherein furnace shell 1 is upper circle furnace shell 11 with
Circle furnace shell 12 is changed simultaneously, as shown in Fig. 2 a Ge Zu construction teams, to upper piecemeal furnace shell 2 13 and lower piecemeal furnace shell 2 14 simultaneously
Change, and carry out order replacing, i.e., piecemeal furnace shell 2 13 and lower piecemeal furnace shell 2 14 are more finished changing, piecemeal furnace shell 3 15 is replaced with
With lower piecemeal furnace shell 3 16, piecemeal furnace shell 4 17 and lower piecemeal furnace shell 4 18 are replaced with afterwards, piecemeal furnace shell five is replaced with afterwards
29 and lower piecemeal furnace shell 5 210；At the same time, another group of construction team is in upper piecemeal furnace shell 2 13 and pair of lower piecemeal furnace shell 2 14
Face carries out perforate replacing, corresponding with above-mentioned replacing construction order, while replacing with piecemeal furnace shell 6 23 and lower piecemeal furnace shell six
24, carry out order replacing afterwards replaces with piecemeal furnace shell 7 25 and lower piecemeal furnace shell 7 26, piecemeal furnace shell 8 27 is replaced with afterwards
With lower piecemeal furnace shell 8 28, piecemeal furnace shell 1 and lower piecemeal furnace shell 1 are replaced with afterwards；
4th, except the furnace shell finally installed, i.e., upper piecemeal furnace shell 5 29 and lower piecemeal furnace shell 5 210 in accompanying drawing 2, upper piecemeal
Outside furnace shell 1 and lower piecemeal furnace shell 1, first brazier shell internal weld seams, weld seam outside the first brazier shell of other furnace shells works as replacing
The top of furnace shell 1 cooling wall, i.e. after cooling wall 34 in Fig. 1 is installed, decline movable hanging scaffold 7 and weld the stove through replacing
The internal weld seams of shell 1.
5th, upper piecemeal furnace shell 5 29 and lower piecemeal furnace shell 5 210 in the furnace shell finally installed, i.e. accompanying drawing 2, upper piecemeal stove
Shell 1 and lower piecemeal furnace shell 1, first brazier shell internal weld seams, carry out the installation of bottom cooling wall immediately after being soldered, i.e., attached
Cooling wall 23 in Fig. 1；
6th, from bottom to top order installs the cooling wall 1 of the cooling wall, i.e. accompanying drawing 1 of changing furnace shell position, and movable hanging scaffold 7 leads to
The elevator machine travel for being arranged on blast furnace roof platform is crossed, realization is moved up and down.
Embodiment 3
Certain steel blast furnace overhaul, changes two circle furnace shells of 8 to 13 layers of cooling wall and 9-12 layers of cooling wall position, specific side
Method step is：
1st, level-lowering damping down, fetch water, cool stove；
2nd, belly pipe, medium and small set are torn open, take off stove, while tearing water pipe pad, 7 letter stencils of weldering open；
3rd, assembled in stove in place after movable hanging scaffold and lifting ring beam；
4th, 11th layer is torn open to the 8th layer of cooling wall；
5th, hanging scaffold is played to the 12nd layer of cooling wall lower edge, is changed while replacing 12,13 layers of cooling wall at 9-11 layers of cooling wall
Furnace shell；
6th, 12,13 layers of cooling wall mat welding, while continuing to change furnace shell；
7th, after furnace shell changes 3/4, the 8th layer of cooling wall is installed, is conducive to shortening the main line construction period；
8th, after furnace shell replacing is finished, 9-11 layers of cooling wall are installed；
9th, with to space mud jacking between furnace shell and cooling wall, facing greatly in stove while removing outside cooling wall cooling water pipe, stove.
19 days practice of construction durations, than the time advance 9 days of normal construction, the plan more predetermined than company be advanced by 3 days.
This construction method is on the one hand due to shortening the repair time, efficiently, relative to the construction method of original technology, saves 1/3 people
Power cost, reduces construction cost；On the other hand prior art and equipment are make use of, the equipment without building complex and expensive is put down
Platform, the replacing and cooling wall construction for making last furnace shell intersects progress, compresses the construction period, reduce further the cost of overhaul.
Embodiment 4
The method and step be the same as Example 1 of the present embodiment, a kind of blast furnace casing is changed changes crossed construction with cooling wall
Method, its step is：
A, often circle furnace shell to be replaced carries out to the piecemeals such as 8, i.e., 1/8,2/8,3/8~7/8,8/8, represent respectively after piecemeal
Every piece of furnace shell；
B, determination replacing furnace shell sequence of construction are 1/8 and 5/8 replacing simultaneously, are next 2/8 and 6/8 replacing simultaneously, connect
Get off and changed simultaneously for 3/8 and 7/8, finally changed simultaneously for 4/8 and 8/8；
C, level-lowering damping down, fetch water, cool stove；
D, tear belly pipe and medium and small set open, take off stove, while tearing water pipe pad open, weld 7 font plates；
Assembling movable hanging scaffold and lifting ring beam in E, stove；
F, by order set in step B, remove the cooling that at the furnace shell position that need to be changed and the position bottom need to be changed
Wall；The furnace shell for immediately beginning to point good block in step B is being enclosed up and down, and changes furnace shell simultaneously at the position of opposite perforate, and outside
The good furnace shell of portion's welded and installed；While the cooling wall above the furnace shell position of disassembling, assembling and replacing；
G, 4/8 finally installed and 8/8 piecemeal furnace shell, first weld the internal weld seams of furnace shell, while what welding had been changed
Outside weld seam, after being soldered, in stove according to from bottom to top order change install cooling wall, while welding finally install 4/8 with
The outside weld seam of 8/8 piecemeal furnace shell；
H, face greatly in stove with being removed outside cooling wall cooling water pipe, stove to space mud jacking between furnace shell and cooling wall, finally.
This last furnace shell changes the method great advantage that crossed construction is changed with cooling wall；Reasonably optimizing replacing whole band point
Block furnace shell order；Meanwhile, reasonably optimizing furnace shell and cooling wall replacing order can realize furnace shell and cooling wall to greatest extent
Crossed construction, shorten the main line construction period.
Embodiment 5
The method and step be the same as Example 4 of the present embodiment, a kind of blast furnace casing is changed changes crossed construction with cooling wall
Method, its step is：
A, often circle furnace shell to be replaced carries out to the piecemeals such as 10, i.e., 1/10,2/10,3/10~9/10,10/10, divide successively
Every piece of furnace shell after piecemeal is not represented；
B, determination replacing furnace shell sequence of construction are 1/10 and 6/10 replacing simultaneously, are next 2/10 and 7/10 while more
Change, next changed simultaneously for 3/10 and 8/10, next changed simultaneously for 4/10 and 9/10, it is finally same with 10/10 for 5/10
Shi Genghuan；
C, level-lowering damping down, fetch water, cool stove；
D, tear belly pipe and medium and small set open, take off stove, while tearing water pipe pad open, weld 7 font plates；
Assembling movable hanging scaffold and lifting ring beam in E, stove；
F, by order set in step B, remove the cooling that at the furnace shell position that need to be changed and the position bottom need to be changed
Wall；The furnace shell for immediately beginning to point good block in step B is being enclosed up and down, and changes furnace shell simultaneously at the position of opposite perforate, and outside
The good furnace shell of portion's welded and installed；While the cooling wall above the furnace shell position of disassembling, assembling and replacing；
G, 5/10 finally installed and 10/10 piecemeal furnace shell, first weld the internal weld seams of furnace shell, after being soldered, are pressed in stove
Changed according to from bottom to top order and cooling wall is installed, while the outside weld seam for the 5/10 and 10/10 piecemeal furnace shell that welding is finally installed；
H, face greatly in stove with being removed outside cooling wall cooling water pipe, stove to space mud jacking between furnace shell and cooling wall, finally.
Embodiment 6
The method and step be the same as Example 4 of the present embodiment, a kind of blast furnace casing is changed changes crossed construction with cooling wall
Method, its step is：
A, often circle furnace shell to be replaced carries out to the piecemeals such as 12, i.e., 1/12,2/12,3/12~11/12,12/12, divide successively
Every piece of furnace shell after piecemeal is not represented；
B, determination replacing furnace shell sequence of construction are 1/12 and 7/12 replacing simultaneously, are next 2/12 and 8/12 while more
Change, next changed simultaneously for 3/12 and 9/12, next changed simultaneously for 4/12 and 10/12, be next 5/12 and 11/12
Change, finally changed simultaneously for 6/12 and 12/12 simultaneously；
C, level-lowering damping down, fetch water, cool stove；
D, tear belly pipe and medium and small set open, take off stove, while tearing water pipe pad open, weld 7 font plates；
Assembling movable hanging scaffold and lifting ring beam in E, stove；
F, by order set in step B, remove the cooling that at the furnace shell position that need to be changed and the position bottom need to be changed
Wall；The furnace shell for immediately beginning to point good block in step B is being enclosed up and down, and changes furnace shell simultaneously at the position of opposite perforate, and outside
The good furnace shell of portion's welded and installed；While the cooling wall above the furnace shell position of disassembling, assembling and replacing；
G, 6/12 finally installed and 12/12 piecemeal furnace shell, first weld the internal weld seams of furnace shell, after being soldered, are pressed in stove
Changed according to from bottom to top order and cooling wall is installed, while the outside weld seam for the 6/12 and 12/12 piecemeal furnace shell that welding is finally installed；
H, face greatly in stove with being removed outside cooling wall cooling water pipe, stove to space mud jacking between furnace shell and cooling wall, finally.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (6)
1. a kind of blast furnace casing changes the method that crossed construction is changed with cooling wall, its step is：
A, often circle furnace shell to be replaced is subjected to piecemeal；
B, determine furnace shell change sequence of construction；
C, level-lowering damping down, fetch water, cool stove；
D, tear belly pipe and medium and small set open, take off stove, while tearing water pipe pad open, weld 7 font plates；
Assembling movable hanging scaffold (7) and lifting ring beam (8) in E, stove；
The cooling wall that bottom need to be changed at F, the furnace shell position and the position that need to be changed by order set in step B, dismounting, tears open
After cooling wall, the furnace shell for immediately beginning to point good block in step A is being enclosed up and down, and changes stove simultaneously at the position of opposite perforate
Shell, and in the good furnace shell of outside welded and installed；While the cooling wall above the furnace shell position of disassembling, assembling and replacing；
G, the piecemeal furnace shell finally installed, first weld the internal weld seams of furnace shell, while the outside weld seam that welding has been changed, is soldered
Afterwards, changed in stove according to from bottom to top order and cooling wall is installed, while the outside weld seam for the piecemeal furnace shell that welding is finally installed；
H, with to space mud jacking between furnace shell and cooling wall, facing greatly in stove while removing outside cooling wall cooling water pipe, stove.
2. a kind of blast furnace casing according to claim 1 changes the method that crossed construction is changed with cooling wall, it is special
Levy and be, furnace shell is often enclosed in step A and is divided into 8 pieces, 10 pieces or 12 pieces.
3. a kind of blast furnace casing according to claim 1 changes the method that crossed construction is changed with cooling wall, it is special
Levy and be, if the more than circle of furnace shell in step F, multi-turn simultaneously change by piecemeal, the vertical seam difference half block cooling wall between each circle
Width, in order to avoid formed cross weld seam.
4. a kind of blast furnace casing according to claim 1 changes the method that crossed construction is changed with cooling wall, it is special
Levy and be, the height of the cooling wall of the one layer of replacing in the top is less than cooling wall height below in step F.
5. a kind of blast furnace casing according to claim 4 changes the method that crossed construction is changed with cooling wall, it is special
Levy and be, it is each up and down in the short transverse of the cooling wall of the one layer of replacing in the top in step F to reduce 10mm.
6. a kind of blast furnace casing according to claim 2 changes the method that crossed construction is changed with cooling wall, it is special
Levy and be, coordinated between 7 font plates and furnace shell using jack and remove cooling wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510690385.3A CN105200173B (en) | 2015-10-22 | 2015-10-22 | A kind of last furnace shell changes the method that crossed construction is changed with cooling wall |
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| CN201510690385.3A CN105200173B (en) | 2015-10-22 | 2015-10-22 | A kind of last furnace shell changes the method that crossed construction is changed with cooling wall |
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| CN105200173A CN105200173A (en) | 2015-12-30 |
| CN105200173B true CN105200173B (en) | 2017-08-29 |
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| CN201510690385.3A Active CN105200173B (en) | 2015-10-22 | 2015-10-22 | A kind of last furnace shell changes the method that crossed construction is changed with cooling wall |
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| CN106799559A (en) * | 2016-12-23 | 2017-06-06 | 首钢总公司 | A kind of whole band replacing options of hot-air stove shell |
| CN109055637B (en) * | 2018-09-17 | 2020-05-22 | 安徽马钢设备检修有限公司 | Hydraulic lifting process for mounting furnace shell in blast furnace overhaul |
| CN109055638B (en) * | 2018-09-17 | 2020-05-15 | 安徽马钢设备检修有限公司 | Method for cross construction of blast furnace shell and water-cooled furnace bottom |
| CN113584243B (en) * | 2021-08-02 | 2022-12-27 | 湖南德尚源耐磨工业有限公司 | Dismounting method for replacing cooling wall of blast furnace body |
| CN114131291B (en) * | 2021-11-13 | 2024-02-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Integral replacement method for middle section deformation and cracking of furnace body of iron-smelting blast furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509049A (en) * | 2009-03-27 | 2009-08-19 | 二十三冶建设集团有限公司 | Construction method for internal cooling wall and furnace liner of blast furnace |
| CN101570802A (en) * | 2009-04-30 | 2009-11-04 | 中冶实久建设有限公司 | Replacing method of blast furnace shell and water wall |
| CN102031320A (en) * | 2010-09-20 | 2011-04-27 | 中冶天工集团有限公司 | Method for replacing blast furnace shell |
| CN102212630A (en) * | 2011-05-23 | 2011-10-12 | 北京首钢建设集团有限公司 | Construction method for replacing cooling wall of blast furnace by utilizing movable hanging scaffold |
| CN103484587A (en) * | 2013-09-30 | 2014-01-01 | 天津二十冶建设有限公司 | Method for replacing cooling wall of blast furnace with material |
-
2015
- 2015-10-22 CN CN201510690385.3A patent/CN105200173B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509049A (en) * | 2009-03-27 | 2009-08-19 | 二十三冶建设集团有限公司 | Construction method for internal cooling wall and furnace liner of blast furnace |
| CN101570802A (en) * | 2009-04-30 | 2009-11-04 | 中冶实久建设有限公司 | Replacing method of blast furnace shell and water wall |
| CN102031320A (en) * | 2010-09-20 | 2011-04-27 | 中冶天工集团有限公司 | Method for replacing blast furnace shell |
| CN102212630A (en) * | 2011-05-23 | 2011-10-12 | 北京首钢建设集团有限公司 | Construction method for replacing cooling wall of blast furnace by utilizing movable hanging scaffold |
| CN103484587A (en) * | 2013-09-30 | 2014-01-01 | 天津二十冶建设有限公司 | Method for replacing cooling wall of blast furnace with material |
Non-Patent Citations (1)
| Title |
|---|
| 马钢新区高炉冷却壁安装施工工艺探讨;师志民;《安徽冶金科技职业学院学报》;20150430;第25卷(第2期);第1.2-1.4节 * |
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