CN105969924B - A kind of cooling water pipe of cooling wall of blast furnace restorative procedure and its structure and suppress leak finding device - Google Patents
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure and its structure and suppress leak finding device Download PDFInfo
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- CN105969924B CN105969924B CN201610573661.2A CN201610573661A CN105969924B CN 105969924 B CN105969924 B CN 105969924B CN 201610573661 A CN201610573661 A CN 201610573661A CN 105969924 B CN105969924 B CN 105969924B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
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Abstract
The invention discloses a kind of cooling water pipe of cooling wall of blast furnace restorative procedure and its structure and leak finding device is suppressed, belongs to blast furnace production technical field.Restorative procedure of the invention looks for leakage → breakage cooling water pipe truncation → leak source bypass → breakage cooling water pipe threading → breakage cooling water pipe to wear silk → breakage cooling water pipe poling → external water source → grouting by suppressing.The reparation structure of cooling water pipe of cooling wall of blast furnace of the invention, the cooling water outlet end of cooling water inlet end and lower part including damaged cooling water pipe and damaged cooling water pipe top；Cooling water inlet end is connected to after being folded outward with cooling water outlet end by external cooling tube, is inside installed with metal hose, is filled high thermal conductivity grout blanket in the gap that metal hose and damaged cooling water pipe are formed；External cooling tube top is provided with bypass pipe.The present invention efficiently solves the problems, such as that blast furnace cooling stave leak reparation causes the service life that is unbalanced and affecting blast furnace cooling stave and rehabilitation cost of Local cooling effect and periphery cooling effect high.
Description
Technical field
The present invention relates to blast furnace production technical field more particularly to a kind of cooling water pipe of cooling wall of blast furnace restorative procedures
And its structure and suppress leak finding device.
Background technique
Cooling wall seepy question annoyings always domestic major small furnace.Once leak directly affects blast furnace stable smooth operation.
And not good method solves seepy question, if dealt with improperly, will lead to copper cooling wall damage.Force blast furnace shift to an earlier date in
It repairs or even overhaul.Therefore, solving seepy question becomes the key that current blast fumance index advanced optimizes.
Most of processing methods of domestic cooling wall leak are divided into two kinds：
First is that soft water is switched to industry water, the inflow of industry water is controlled, so that control drains to the water in furnace, it cannot
Solve seepy question.If leak continues to expand or seriously, leak cooling wall water pipe is split and is in the milk, can be accelerated in this way
The progress of cooling wall damage.
Second is that the copper cooling wall water pipe to leak carries out wearing metal hose.It is passed through industry water or soft water after poling, then gives
It is in the milk between the metal hose and raw water tubes worn, thus cooling copper cooling wall.It is this more advanced, can prevent water into
Enter in furnace, provides optimum condition for operation in furnace, and the service life of copper cooling wall can be extended to greatest extent.But this
Kind method is since leak causes frictional resistance in former damaged cooling tube larger, and metal hose quality is soft, is easy in poling process
In be damaged, need repeat poling, cause cost relatively high.
Chinese patent publication No. CN102534078A, publication date：2012.07.04 patent document disclose a kind of blast furnace
Cooling wall cooling water pipe replacement method disconnects damaged cooling water pipe and front and rear part cooling water pipe, by external water pipe again will before
Cooling water pipe connects afterwards, and cooling water is made to cross damaged cooling water pipe and direct circulation.One is penetrated in damaged cooling water pipe simultaneously
Root metal hose, metal hose are connected on the replacement cooling water pipe communicated with external water source by the seamless steel pipe at both ends, are made
Cooling water in metal hose has independently formed an access, continues to realize refrigerating function.The invention is not influencing other coolings
In the case that the normal water flowing of water pipe is cooling, the quick replacement of damaged cooling water pipe is realized, it is existing to eliminate the leak into blast furnace
As coke ratio caused by avoiding furnace temperature from declining rises problem, has restored the refrigerating function for having damaged cooling water pipe, ensure that cooling wall
Cooling effect, and the service life of cooling wall can be extended.Although this method has been restored to have damaged the refrigerating function of cooling water pipe,
But metal hose and bypass pipe water source cannot synchronous and same flow, cause the unbalanced of Local cooling effect and periphery cooling effect
And affect the service life of blast furnace cooling stave.
Summary of the invention
1. technical problems to be solved by the inivention
Local cooling effect and periphery cooling effect are caused for blast furnace cooling stave leak reparation existing in the prior art
It is unbalanced and affect the high problem of the service life of blast furnace cooling stave, rehabilitation cost, the present invention provides a kind of blast furnace colds
But wall cooling water pipe restorative procedure and its structure and leak finding device is suppressed.It may be implemented after low cost is repaired and repaired without part
The purpose of inhomogeneous cooling weighing apparatus.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention is：
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure, operating procedure are：
Leakage is looked for Step 1: suppressing：Equipment is suppressed with leak detection to suppress every layer of blast furnace of cooling wall water pipe, finds leakage
Point；The use of equipment is suppressed in unified dedicated leak detection, is not necessarily to every layer of preparation pressure pump；
Step 2: damaged cooling water pipe truncation：After confirming leakage point, the inlet valve of the leakage point is closed, avoids cooling down
Water is excessively lost and influences the operation of other cooling tubes；And it is broken including the leakage point in reserved one section of the truncation up and down of leakage point
Cooling water pipe is damaged, as the carrier for wearing metal hose；
Step 3: leak source bypasses：The cooling water outlet end of the cooling water inlet end on damaged cooling water pipe top and lower part is folded outward
Afterwards, cooling water inlet end and cooling water outlet end are bypassed by external cooling tube, to not influence the cooling of the cooling wall outside leak source；
Step 4: the threading of damaged cooling water pipe：The both ends of damaged cooling water pipe are folded outward, with being slightly less than the soft of caliber
Wooden shot or iron sheet ball are connected to flexible cord, and the other end of flexible cord is fixed, and the soft wooden shot of connection or iron sheet bulb stopper are entered damaged cooling
Then water pipe accesses compressed air, be blown into soft wooden shot or iron sheet ball from the upper end of damaged cooling water pipe with compressed air, by
Lower end blowout, so that flexible cord is passed through damaged cooling water pipe；Play the role of impurity in lead and cleaning pipeline；Flexible cord is to soft
The resistance of wooden shot or iron sheet ball is small, avoids adverse effect of the line resistance to lead as far as possible；
Step 5: damaged cooling water pipe wears silk：Iron wire is passed through into damaged cooling water pipe again using flexible cord；Iron wire intensity is big
In flexible cord, lead twice, wire strength is ascending, and lead can succeed twice, avoids the excessive duplication of labour；
Step 6: the poling of damaged cooling water pipe：Caliber is slightly less than to the metal hose of damaged cooling water pipe using iron wire
Across damaged cooling water pipe；Iron wire intensity is big, can pull out metal hose and will not disconnect；
Step 7: external water source：External water inlet pipe and outlet pipe are distinguished into the both ends of metal hose, original is leaked to play
The cooling effect of cooling wall at point.
It preferably, further include Step 8: grouting：By the mashing mouth that is opened up in the extension end of damaged cooling water pipe toward metal
High thermal conductivity grouting material is charged in gap between hose and damaged cooling water pipe, play fixed metal hose and conducts the double of heat
Recast is used, and metal hose is avoided to generate frictional property displacement due to the effect of water flow, and reduces the service life of metal hose.
Preferably, mashing mouth and venthole are opened up respectively in two extension ends of damaged cooling water pipe in step 8, and close
Both ends annular mouth is sealed, makes mashing work more smoothly and uniform, avoids generating unnecessary aeration slurry when mashing inside slurry
Body is uniformly distributed.
It preferably, is that the both ends of metal hose are connected external cooling tube by seamless connection pipe to form water inlet in step 7
Pipe and outlet pipe allow cooling water flow is synchronous to carry out, improve the synchronism of cooling effect.
Preferably, water valve is set on the external cooling tube between water inlet pipe and outlet pipe, when needing synchronous, closes water
Valve when without synchronizing, opens water valve, the operation is simple and flexible, and property is strong.
Preferably, it is connected on external cooling tube top and plays the work for adjusting cooling water flow with valvular bypass pipe
With, increase and flow to the water speed of metal hose, compensation unbalanced cooling effect as caused by caliber is less than former cooling tube, it is close and
Local cooling wall is avoided to generate the different variations expanded with heat and contract with cold since cooling effect is different and influence the service life of blast furnace；
Pipe, which connects, to be played the role of connecting metal hose and is seamlessly connected pipe, and sealing slurry is also acted as；The seamless connection pipe
It is connect by pipe and is connected with the both ends of metal hose, and sealed and be fixed on the outer bending tube of damaged cooling water pipe, that is, play connection
The effect of metal hose and seamless connection pipe, also acts as the effect of sealing slurry.
Preferably, the metal hose is bellows, and mutability folding, intensity is big, and high temperature resistant, bending is less likely to be damaged；It is described
High thermal conductivity grouting material is the thermally conductive material of carbonaceous, and thermal conductivity is strong, and fineness is small, makes the mating reaction of mashing mouth and venthole more aobvious
It writes, thermally conductive material is easily accessible the outer corrugations slot of bellows, moreover, after slight expansion and the combination of bellows is tight after heated
It is close, so that heat fixation effect is good；The flexible cord is nylon wire, and relatively other flexible cord intensity are big, and curvature performance is good, and line resistance is small；Institute
The both ends for stating cooling water inlet end, cooling water outlet end and damaged cooling water pipe are folded outward right angle, and have curve transition at the place of being folded outward,
Facilitate external pipe and positioning.
Preferably, the step 1 suppresses the method for looking for leakage and is：
A, after damping down, production close the one layer of cooling water pipe of cooling wall to be suppressed triple valve and cooling wall top layer into
Water valve；
B, slip spade in the cooling wall water pipe between every two layers at N layers of cooling wall to cooling wall top layer, each blind plate
It is inserted in front of exhaust valve；
C, it after confirming that the circle of weld seam one of blind plate is fully welded, suppresses hose and is connected respectively with following several layers of exhaust valve；
1) exhaust valve with N+1 layers of cooling wall N layers~cooling wall is connected, and suppresses N+1 layers of one layer~cooling wall of cooling wall
Cooling wall water pipe；
2) exhaust valve with N+2 layers of cooling wall N+1 layers~cooling wall is connected, and suppresses N+2 layers of cooling wall of cooling wall water pipe；
3) exhaust valve with N+3 layers of cooling wall N+2 layers~cooling wall is connected, and suppresses N+3 layers of cooling wall of cooling wall water pipe；
4) it is connected with the exhaust valve of cooling wall N+3 layers~cooling wall top layer, suppresses the cooling wall water pipe of cooling wall top layer；
D, it after confirming that suppressing water pipe all connects, checks joint and suppresses hose without leak, after inspection, while to cold
But the cooling wall water pipe of 1~N+1 of wall layers, N+2 layers, N+3 layers and top layer is suppressed；
1) if 1~N+1 layers of cooling wall water pipe leak, wouldn't be handled, cooling water is switched to industry water；Due to blast furnace high level
Belong to high-temperature region, cooling water pipe is easy to produce leak source, and 1 belongs to relative low temperature area to N floor, will not generally generate leak source, when 1 to
When N layers of generation leak source, relative to high-temperature region, it is easier to handle and use otherwise processed；Cooling water is switched to industry water
Purpose be the operation for avoiding excessive be lost of cooling water and influencing other cooling water pipes, the cooling water system of blast furnace is opposite seals
The system closed is lost the cooling effect that excessively will affect other cooling water pipes；
2) if N+2 layers of cooling wall water pipe leak, splits N+2 layers；
3) if N+3 layers of cooling wall water pipe leak, splits N+3 layers；
4) if top layer cooling wall water pipe leak, splits top layer；
Entirely suppressing looks for the method for leakage easy to operate, leak source accurate positioning.
A kind of reparation structure according to cooling water pipe of cooling wall of blast furnace, including damaged cooling water pipe and damaged cooling water pipe
The cooling water inlet end on top and the cooling water outlet end of lower part；The both ends of the breakage cooling water pipe and cooling water inlet end, cooling go out
Water end (W.E.) is outer to fold cooling wall；The cooling water inlet end is connected to after being folded outward with cooling water outlet end by external cooling tube；It is described broken
It is installed with metal hose in damage cooling water pipe, fills high thermal conductivity grout blanket in the gap that metal hose and damaged cooling water pipe are formed,
The extension end at damaged cooling water pipe both ends has venthole and mashing mouth, and the extension end port at both ends passes through 2 pipes respectively
It connects after being connected to 2 seamless connection pipes, 2 seamless connection pipes are connected to external cooling tube again；It is outer between 2 seamless connection pipes
It connects and water valve is set on cooling tube；External cooling tube top is provided with bypass pipe.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure suppresses leak finding device, including main Shui Bao, Fen Shuibao, blind plate,
Exhaust valve suppresses cooling wall water pipe inside hose and each layer cooling wall；The main Shui Bao and divides between water packet and pass through connection
Pipe connection divides water packet to separate connection hard tube in parallel outward, connection hard tube again with suppress after hose is connected to, suppress hose and pass through again
The exhaust valve of each layer and each layer cooling wall water pipe communicate；Inlet valve, the setting of bottom cooling wall water pipe is arranged in top layer cooling wall water pipe
Triple valve；Slip spade in every two layers of cooling wall water pipe, each blind plate are inserted in front of every layer of exhaust valve, and whole device looks for leakage
Accurately, easy to operate, and save the spare part of pressure pump and the cost of maintenance, most importantly can in the shortest time, most
Which layer cooling wall leak accurately judged, to save the repair time, the blast furnace staying time is shortened, improves the finger of blast furnace
Mark and operating rate.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the advantages that：
(1) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention, passes through soft wooden shot or iron sheet ball and compression
The cooperation of air, lead is pierced by, and soft wooden shot or iron sheet ball are slightly less than caliber, has both played compressed air air pressure to sphere pressure
Maximized effect, moreover it is possible to play the role of taking out of the impurity penetrated into due to leak, when poling, the resistance of metal hose is significantly
It reduces, avoid secondary or repeats poling, reduce siphunculus cost；
(2) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention, high thermal conductivity grouting material inject gap, play solid
Determine metal hose and conducts the effect of heat；
(3) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention is beaten the mating reaction of mouth and venthole, allows
Mashing work is more smoothly and uniform, and slurry inside when mashing is avoided to generate being uniformly distributed for unnecessary aeration slurry；
(4) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention and its structure, the both ends of metal hose pass through
It is seamlessly connected pipe and connects external cooling tube, allow cooling water flow is synchronous to carry out, improve the synchronism of cooling effect；
(5) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention and its structure, water inlet pipe and outlet pipe it
Between external cooling tube on water valve is set, when needing synchronous, close water valve, without it is synchronous when, open water valve, easy to operate, spirit
It is active strong；
(6) of the invention a kind of cooling water pipe of cooling wall of blast furnace restorative procedure and its structure, bypass pipe and its valve, are played
The effect of cooling water flow is adjusted, the water speed for flowing to metal hose is increased, compensation is less than caused by original cooling tube not as caliber
Balanced cooling effect, it is close and avoid Local cooling wall due to cooling effect is different and generate the different variations expanded with heat and contract with cold and
Influence the service life of blast furnace；Pipe, which connects, to be played the role of connecting metal hose and is seamlessly connected pipe, and sealing slurry is also acted as
Effect；
(7) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention and its structure, bellows mutability folding, intensity
Greatly, high temperature resistant, it is not easy to damage；The thermally conductive material thermal conductivity of carbonaceous is strong, and fineness is small, allow mashing mouth and venthole mating reaction
More significant, thermally conductive material is easily accessible the outer corrugations slot of bellows, moreover, after heated, after slight expansion and bellows
It is tightly combined, so that heat fixation effect is good；The relatively other flexible cord intensity of nylon wire are big, and curvature performance is good；Cooling water inlet end, cooling
Water outlet and the both ends of damaged cooling water pipe are folded outward right angle, facilitate external pipe and positioning；
(8) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention and its structure are suppressed the method for looking for leakage and are easy
Operation, leak source accurate positioning；Since blast furnace high level belongs to high-temperature region, cooling water pipe is easy to produce leak source, and 1 to N layer belongs to phase
To low-temperature space, leak source will not be generally generated, when 1 to N layer of generation leak source, relative to high-temperature region, is easier to handle and use
Otherwise processed；The purpose that cooling water is switched to industry water is to avoid the excessive loss of cooling water and influence other cooling water pipes
Operation, the cooling water system of blast furnace is the system of relative closure, is lost and excessively will affect the cooling effects of other cooling water pipes；
(9) the reparation structure of a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention, efficiently solves blast furnace cold
But wall leak reparation causes the use longevity that is unbalanced and affecting blast furnace cooling stave of Local cooling effect and periphery cooling effect
The high problem of life, rehabilitation cost；
(10) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention suppresses leak finding device, looks for leakage accurate, holds
It is easy to operate, and save the spare part of pressure pump and the cost of maintenance, it most importantly can be in the shortest time, most accurately sentence
Which layer cooling wall leak of breaking to save the repair time shortens the blast furnace staying time, improves the index and operation of blast furnace
Rate.
Detailed description of the invention
Fig. 1 cooling wall cooling water pipe distribution map；
Fig. 2 is a kind of schematic diagram of the reparation structure of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention；
Fig. 3 is a kind of schematic diagram for suppressing leak finding device of cooling water pipe of cooling wall of blast furnace restorative procedure of the invention.
Label declaration in schematic diagram：1, cooling water inlet end；2, cooling water outlet end；3, damaged cooling water pipe；4, metal is soft
Pipe；5, high thermal conductivity grout blanket；6, external cooling tube；7, seamless connection pipe；8, bypass pipe；9, pipe connects；10, cooling wall；11, main water
Packet；12, connecting tube；13, Fen Shuibao；14, hard tube is connected；15, blind plate；16, exhaust valve；17, pressure gauge；18, inlet valve；19,
Triple valve；20, hose is suppressed；21, one layer of cooling wall；22, cooling wall N layers；23, cooling wall N+1 layers；24, cooling wall N+2 layers；
25, cooling wall N+3 layers；26, cooling wall top layer；30, cooling wall water pipe；31, extension end；61, water valve；311, venthole；312,
It is beaten mouth.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
ф73×6：Indicate caliber 73mm, length 6m, other similar data structure expression of the same race.
Embodiment 1
One 4000m of certain steel plant3Blast furnace was gone into operation so far respectively at 2 months 2005 and igniting in May, and production is constantly in steady
Efficient operation is determined, but there are different degrees of damages for discovery cooling wall from the beginning of this year, by checking in the middle part of current A blast-furnace shaft
8B, 20D, 57A tri- plows straight-through cooling water pipe leak, i.e., there are drainages at least three pieces of cooling walls.12 layers of A blast furnace or more cold
But wall water pipe structure is respectively labeled as A, B, C, D as shown in Figure 1, every piece of cooling wall has 4 water pipes.8B indicates the 8th piece of cooling wall
No. B pipe, remainder are analogized.
In view of previous experience, once there is the damaged condition in the cooling equipment of blast-furnace body, the cooling equipment of blast-furnace body
Rate of decay will be getting faster；Blast furnace just comes into furnace retaining and protects the production stage.
Extend life of equipment according to current production status to ensure normal production, production side is protected in surely following maintenance of drawing up
Case：
One, prepare before maintenance
1, first blast furnace cooling stave soft water must be carried out separating investigation, judged substantially at 13~14 layers at present.
2, prepare to hunt leak to suppress equipment, high-pressure pump, metal hose, quick coupling, the pressure of 0~5Mpa is installed on metal hose
Power table.
3, when periodical repair, equipment must first cut off the water water inlet/outlet pipe of cooling wall, and service personnel's tissue suppresses cooling water pipe
Experiment, judges whether leak.If restoring cooling tube without leak, supplying water as early as possible.
Two, the leakage point detected according to experiment is suppressed, is overhauled using following scheme：
1, the cooling wall soft water Inlet and outlet water of leakage point at this is disconnected, lower layer's cooling water outlet end and upper one layer of water inlet pipe is joined
Logical, original design is ф 73 × 6 using cooling caliber, then external 6 selection of cooling tube of soft water is 76 × 6 seamless steel pipe of ф, and inner wall needs
Want pickling processes.The manual ball valve of one DN65~25 is installed among external cooling tube 6；3m long one is pressed in advance according to drawing size
Section blanking, 90 ° of both ends quarter bend is excessive, the long 1.5m of both ends short tube, prepares several spare.Pipeline connection uses ф 89 × 6~40
Casing welding.
2, the water supply of leak cooling wall, using 28.5 meters of platform advanced stage spraying cooling endless tubes, caliber ф 273 × 10 is upper pre-
The seamless steel pipe short tube of several groups ф 60 × 5 is filled, the centre installation manual ball valve of DN50~25 is controlled, and 60 short tube of ф is directly inserted
Enter in leak cooling wall water inlet pipe, pipeline connection is welded using the casing of ф 76 × 6~40.
3, the water outlet of leak cooling wall, it is flat to 36 meters all the way up from 28.5 meters of platforms using 60 × 3.5 seamless steel pipe of ф
Water outlet is introduced platform southwest, two, northeast catch basin nearby by platform；Exhaust valve separately is installed in the water outlet of cooling wall.
4, for the ease of maintenance and operation in the future, in 28.5 meters of platform advanced stage spraying cooling endless tube caliber ф 273 × 10
Lower part installation DN150 blowdown valve, each 1, totally 2, south, north.
Three, leak cooling wall poling
If a water pipe breakage leak of 57A is larger, repaired using a kind of cooling water pipe of cooling wall of blast furnace of the present embodiment
Compound method, operating procedure are：
Step 1: damaged cooling water pipe truncation：After confirming leakage point, the inlet valve of the leakage point is closed, avoids cooling down
Water is excessively lost and influences the operation of other cooling tubes；And it is broken including the leakage point in reserved one section of the truncation up and down of leakage point
Cooling water pipe 3 is damaged, as the carrier for wearing metal hose；
Step 2: leak source bypasses：It will be outside the cooling water outlet end 2 of the cooling water inlet end 1 on damaged 3 top of cooling water pipe and lower part
After folding, cooling water inlet end 1 and cooling water outlet end 2 are bypassed by external cooling tube 6, to not influence the cooling wall outside leak source
It is cooling；
Step 3: the threading of damaged cooling water pipe：The both ends of the damaged cooling water pipe 3 of ф 73 are folded outward, it is soft with ф 70
Matter wooden shot or iron sheet ball are connected to flexible cord, and the other end of flexible cord is fixed, and the soft wooden shot of connection or iron sheet bulb stopper are entered damaged cold
But then compressed air is accessed in water pipe 3, blown soft wooden shot or iron sheet ball from the upper end of damaged cooling water pipe 3 with compressed air
Enter, blown out by lower end, so that flexible cord is passed through damaged cooling water pipe 3；Play the role of impurity in lead and cleaning pipeline, in order to
Cleaning thoroughly, can be repeated several times blow pressure, and tangent line can also be arranged to shovel on sphere radial line, impurity is cleaned out；Flexible cord is to soft
The resistance of matter wooden shot or iron sheet ball is small, avoids adverse effect of the line resistance to lead as far as possible；
Step 4: damaged cooling water pipe wears silk：Iron wire is passed through into damaged cooling water pipe 3 again using flexible cord；Iron wire intensity
Greater than flexible cord, lead twice, wire strength is ascending, and lead can succeed twice, avoids the excessive duplication of labour；
Step 5: the poling of damaged cooling water pipe：The metal hose 4 of caliber ф 40 is passed through into damaged cooling water using iron wire
Pipe 3；Iron wire intensity is big, can pull out metal hose 4 and will not disconnect；
Step 6: external water source：External water inlet pipe and outlet pipe are distinguished into the both ends of metal hose 4, to play to original
The cooling effect of leak source cooling wall.
Embodiment 2
A kind of restorative procedure of cooling water pipe of cooling wall of blast furnace of the present embodiment, specific steps with embodiment 1, are improved substantially
Place is：It further include Step 7: grouting：By the mashing mouth 312 that is opened up in the extension end 31 of damaged cooling water pipe 3 toward metal
High thermal conductivity grouting material is charged in gap between hose 4 and damaged cooling water pipe 3, play fixed metal hose and conducts heat
Double action avoids metal hose from generating frictional property displacement due to the effect of water flow, and reduces the service life of metal hose,
And stomata 311, and sealing both ends annular mouth are outputed in the extension end of the other end 31, it makes mashing work more smoothly and uniform, avoids
Being uniformly distributed for unnecessary aeration slurry is generated when mashing inside slurry.
Embodiment 3
A kind of restorative procedure of cooling water pipe of cooling wall of blast furnace of the present embodiment, specific steps with embodiment 2, are improved substantially
Place is：In step 6 by the both ends of metal hose 4 by be seamlessly connected pipe 7 connect external cooling tube 6 formed water inlet pipe and
Outlet pipe allows cooling water flow is synchronous to carry out, improves the synchronism of cooling effect.It can also be outer between water inlet pipe and outlet pipe
Setting water valve 61 on cooling tube 6 being connect, when needing synchronous, closes water valve, when without synchronizing, opening water valve, property that the operation is simple and flexible
By force.
Embodiment 4
A kind of restorative procedure of cooling water pipe of cooling wall of blast furnace of the present embodiment, specific steps with embodiment 3, are improved substantially
Place is：It is connected on external 6 top of cooling tube with valvular bypass pipe 8, plays the role of adjusting cooling water flow, increase
The water speed of metal hose is flowed to greatly, and compensation is less than unbalanced cooling effect caused by original cooling tube as caliber, closely avoids
Local cooling wall generates the different variations expanded with heat and contract with cold and influences the service life of blast furnace since cooling effect is different；Pipe connects
Play the role of connecting metal hose and be seamlessly connected pipe, also acts as sealing slurry；The seamless connection pipe 7 passes through
Pipe connects 9 and connects with the both ends of metal hose 4, and seals and be fixed on the outer bending tube of damaged cooling water pipe 3, that is, plays connection gold
Belong to hose and be seamlessly connected the effect of pipe, also acts as the effect of sealing slurry.The metal hose 4 can be bellows, variable
Folding, intensity is big, and high temperature resistant, bending is less likely to be damaged；The high thermal conductivity grouting material is the thermally conductive material of carbonaceous, and thermal conductivity is strong, Er Qiexi
Spend it is small, allow mashing mouth and venthole mating reaction it is more significant, thermally conductive material is easily accessible the outer corrugations slot of bellows, and
And it is heated after, be tightly combined after slight expansion with bellows, so that heat fixation effect is good；The flexible cord is nylon wire, phase
Big to other flexible cord intensity, curvature performance is good, and line resistance is small；The cooling water inlet end 1, cooling water outlet end 2 and damaged cooling water
The both ends of pipe 3 are folded outward right angle, and have curve transition at the place of being folded outward, and facilitate external pipe and positioning.
Embodiment 5
A kind of restorative procedure of cooling water pipe of cooling wall of blast furnace of the present embodiment, specific steps with embodiment 4, are improved substantially
Place is：
Suppress experiment to cooling water pipe and suppress the method for looking for leakage and is：
A, after damping down, as shown in figure 3, the triple valve 19 of one layer of 1 cooling water pipe of cooling wall to be suppressed and cold is closed in production
But the inlet valve 18 of wall top layer 26；
B, slip spade 15 in the cooling wall water pipe 30 between every two layers in cooling wall N layer 22 to cooling wall top layer 26, often
A blind plate 15 is all inserted in front of exhaust valve 16；In the present embodiment, N layers are the 8th layer；
C, it after confirming that the circle of weld seam one of blind plate 15 is fully welded, suppresses hose 20 and is connected respectively with following several layers of exhaust valve 16；
1) it is connected with the exhaust valve 16 of 8 layers of cooling wall, 9 layer 23 of 22~cooling wall, suppresses one layer of 21~cooling wall 9 of cooling wall
The cooling wall water pipe 30 of layer 23；
2) it is connected with the exhaust valve 16 of 9 layers of cooling wall, 10 layer 24 of 23~cooling wall, suppresses 10 layer 24 of cooling wall of cooling wall
Water pipe 30；
3) it is connected with the exhaust valve 16 of 10 layers of cooling wall, 11 layer 25 of 24~cooling wall, suppresses 11 layer 25 of cooling wall of cooling wall
Water pipe 30；
4) it is connected with the exhaust valve 16 of 11 layers of 25~cooling wall top layer 26 of cooling wall, suppresses the cooling wall of cooling wall top layer 26
Water pipe 30；
D, confirmation is suppressed after water pipe all connects, inspection joint and suppresses hose 20 without leak, after inspection, and meanwhile it is right
The cooling wall water pipe 30 of 1~9 layer, 10 layers, 11 layers of cooling wall and top layer is suppressed；
1) if, 1~9 layer of 30 leak of cooling wall water pipe, wouldn't be handled, cooling water is switched to industry water；Due to blast furnace height
Layer belongs to high-temperature region, and cooling water pipe is easy to produce leak source, and 1 to 8 floor belongs to relative low temperature area, leak source will not be generally generated, when 1
When to 8 layers of generation leak source, relative to high-temperature region, be easier to handle and using otherwise processed；Cooling water is switched to industry
The purpose of water is the operation for avoiding excessive be lost of cooling water and influencing other cooling water pipes, and the cooling water system of blast furnace is opposite
Closed system is lost the cooling effect that excessively will affect other cooling water pipes；
2) if, 10 layers of 30 leak of cooling wall water pipe, splits 10 layers；
3) if, 11 layers of 30 leak of cooling wall water pipe, splits 11 layers；
4) if, 30 leak of top layer cooling wall water pipe, splits top layer；
Entirely suppressing looks for the method for leakage easy to operate, leak source accurate positioning.
A kind of cooling water pipe of cooling wall of blast furnace method of the present embodiment is formed by reparation structure, as shown in Fig. 2, including broken
Damage the cooling water inlet end 1 on 3 top of cooling water pipe 3 and damaged cooling water pipe and the cooling water outlet end 2 of lower part；It is described damaged cooling
The both ends and cooling water inlet end 1, cooling water outlet end 2 of water pipe 3 are outer to fold cooling wall 10；The cooling water inlet end 1 and cooling go out
Water end (W.E.) 2 is connected to after being folded outward by external cooling tube 6；Metal hose 4 is installed in the breakage cooling water pipe 3, metal hose 4 and broken
It damages and fills high thermal conductivity grout blanket 5 in the gap that cooling water pipe 3 is formed, the extension end 31 at damaged 3 both ends of cooling water pipe has
Venthole 311 and mashing mouth 312,31 port of extension end at both ends passes through 2 pipes respectively and connects 9 to be connected to 2 seamless connection pipes 7
Afterwards, 2 seamless connection pipes 7 are connected to external cooling tube 6 again；Water is set on external cooling tube 6 between 2 seamless connection pipes 7
Valve 61；External 6 top of cooling tube is provided with bypass pipe 8.
It is cooling to efficiently solve blast furnace for a kind of reparation structure of cooling water pipe of cooling wall of blast furnace restorative procedure of the present embodiment
Wall leak reparation cause Local cooling effect and periphery cooling effect service life that is unbalanced and affecting blast furnace cooling stave,
The high problem of rehabilitation cost.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present embodiment suppresses leak finding device, as shown in figure 3, including
Main water packet 11 divides water packet 13, blind plate 15, exhaust valve 16, suppresses cooling wall water pipe 30 inside hose 20 and each layer cooling wall；
The main water packet 11 and dividing between water packet 13 is connected to by connecting tube 12, and water packet 13 is divided to separate connection hard tube 14 in parallel outward,
Connection hard tube 14 again and is suppressed after hose 20 is connected to, and suppresses hose 20 again by the exhaust valve 16 and each layer cooling wall water pipe of each layer
30 communicate；Inlet valve 18 is arranged in top layer cooling wall water pipe 30, and triple valve 19 is arranged in bottom cooling wall water pipe 30；Every two layers of cooling
Slip spade 15 in wall water pipe 30, each blind plate 15 are inserted in front of every layer of exhaust valve 16, and whole device looks for leakage accurate, are easy behaviour
Make, and save the spare part of pressure pump and the cost of maintenance, most importantly can in the shortest time, most accurately judgement which
Layer cooling wall leak shortens the blast furnace staying time to save the repair time, improves the index and operating rate of blast furnace.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (1)
1. a kind of cooling water pipe of cooling wall of blast furnace restorative procedure, which is characterized in that operating procedure is：
Leakage is looked for Step 1: suppressing：Equipment is suppressed to every layer of blast furnace of cooling wall water pipe with leak detection（30）It is suppressed, finds leakage
Point；
Step 2: damaged cooling water pipe truncation：After confirming leakage point, the inlet valve of the leakage point is closed, and in leakage point
The reserved one section of damaged cooling water pipe including the leakage point of truncation up and down（3）；
Step 3: leak source bypasses：By damaged cooling water pipe（3）The cooling water inlet end on top（1）With the cooling water outlet end of lower part（2）
After being folded outward, pass through external cooling tube（6）It will cooling water inlet end（1）With cooling water outlet end（2）Bypass；
Step 4: the threading of damaged cooling water pipe：By damaged cooling water pipe（3）Both ends be folded outward, with being slightly less than the soft of caliber
Wooden shot or iron sheet ball are connected to flexible cord, and the other end of flexible cord is fixed, and the soft wooden shot of connection or iron sheet bulb stopper are entered damaged cooling
Water pipe（3）, compressed air is then accessed, with compressed air by soft wooden shot or iron sheet ball from damaged cooling water pipe（3）Upper end
It is blown into, is blown out by lower end, so that flexible cord is passed through damaged cooling water pipe（3）；
Step 5: damaged cooling water pipe wears silk：Iron wire is passed through into damaged cooling water pipe again using flexible cord（3）；
Step 6: the poling of damaged cooling water pipe：Caliber is slightly less than damaged cooling water pipe using iron wire（3）Metal hose
（4）Across damaged cooling water pipe（3）；
Step 7: external water source：By metal hose（4）Both ends distinguish external water inlet pipe and outlet pipe；
Step 8: grouting：By in damaged cooling water pipe（3）Extension end（31）The mashing mouth opened up（312）Toward metal hose
（4）With damaged cooling water pipe（3）Between gap in charge high thermal conductivity grouting material；And in damaged cooling water pipe（3）Two stretch
Outlet（31）Mashing mouth is opened up respectively（312）And venthole（311）, and sealing both ends annular mouth；
It is by metal hose in step 7（4）Both ends by seamless connection pipe（7）Connect external cooling tube（6）Form water inlet pipe
And outlet pipe；
External cooling tube between water inlet pipe and outlet pipe（6）Upper setting water valve（61）；When needing synchronous, water valve is closed
（61）, when without synchronizing, open water valve（61）；
In external cooling tube（6）Top is connected with valvular bypass pipe（8）；The seamless connection pipe（7）It is connect by pipe（9）
And metal hose（4）Both ends connection, and seal be fixed on damaged cooling water pipe（3）Outer bending tube on；
The metal hose（4）For bellows；The high thermal conductivity grouting material is the thermally conductive material of carbonaceous；The flexible cord is nylon wire；Institute
State cooling water inlet end（1）, cooling water outlet end（2）And damaged cooling water pipe（3）Both ends be folded outward right angle, and have at the place of being folded outward
Curve transition；
The step 1 suppresses the method for looking for leakage, and using leak finding device is suppressed, the leak finding device of suppressing includes main water packet（11）,
Divide water packet（13）, blind plate（15）, exhaust valve（16）, suppress hose（20）And the cooling wall water pipe inside each layer cooling wall；Institute
State main water packet（11）With divide water packet（13）Between pass through connecting tube（12）Connection, Fen Shuibao（13）It is hard that connection in parallel is separated outward
Pipe（14）, connect hard tube（14）Again and suppress hose（20）After connection, hose is suppressed（20）Pass through the exhaust valve of each layer again（16）
It is communicated with each layer cooling wall water pipe；Inlet valve is arranged in top layer cooling wall water pipe（18）, bottom cooling wall water pipe setting triple valve
（19）；Slip spade in every two layers of cooling wall water pipe（15）, each blind plate（15）All it is inserted in every layer of exhaust valve（16）Before；It beats
Pressure look for leakage step be：
A, after damping down, to be suppressed one layer of cooling wall is closed in production（1）The triple valve of cooling water pipe（19）And cooling wall top layer
（26）Inlet valve（18）；
B, at N layers of cooling wall（22）To cooling wall top layer（26）Every two layers between cooling wall water pipe in slip spade（15）, often
A blind plate（15）All it is inserted in exhaust valve（16）Before；
C, confirm blind plate（15）Weld seam one circle be fully welded after, suppress hose（20）Respectively with following several layers of exhaust valve（16）It connects
It is logical；
1）With N layers of cooling wall（22）N+1 layers of~cooling wall（23）Exhaust valve（16）It connects, suppresses one layer of cooling wall（21）~cold
But wall N+1 layers（23）Cooling wall water pipe；
2）With N+1 layers of cooling wall（23）N+2 layers of~cooling wall（24）Exhaust valve（16）It connects, suppresses N+2 layers of cooling wall（24）
Cooling wall water pipe；
3）With N+2 layers of cooling wall（24）N+3 layers of~cooling wall（25）Exhaust valve（16）It connects, suppresses N+3 layers of cooling wall（25）
Cooling wall water pipe；
4）With N+3 layers of cooling wall（25）~cooling wall top layer（26）Exhaust valve（16）It connects, suppresses cooling wall top layer（26）'s
Cooling wall water pipe；
D, it after confirming that suppressing water pipe all connects, checks joint and suppresses hose（20）Without leak, after inspection, while to cold
But the cooling wall water pipe of 1~N+1 of wall layers, N+2 layers, N+3 layers and top layer is suppressed；
1）If 1~N+1 layers of cooling wall water pipe leak, wouldn't be handled, cooling water is switched to industry water；
2）If N+2 layers of cooling wall water pipe leak, split N+2 layers；
3）If N+3 layers of cooling wall water pipe leak, split N+3 layers；
4）If top layer cooling wall water pipe leak, splits top layer.
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| CN106498105A (en) * | 2016-12-14 | 2017-03-15 | 四川德胜集团钒钛有限公司 | A kind of method that blast-furnace cooled water pipe is repaired online |
| CN106521062A (en) * | 2016-12-14 | 2017-03-22 | 四川德胜集团钒钛有限公司 | Repairing method of blast furnace cooling wall water cooling system |
| CN110793335B (en) * | 2019-09-25 | 2021-03-23 | 广西金川有色金属有限公司 | Water leakage treatment method for furnace water cooling part |
| CN110846452B (en) * | 2019-11-27 | 2024-02-09 | 邯郸钢铁集团有限责任公司 | Device and method for searching leakage points of damaged cooling wall of blast furnace |
| CN111637310A (en) * | 2020-06-03 | 2020-09-08 | 唐山市开平区泽成冶金机械有限公司 | Online repair method for leakage of water pipe of cooling wall of blast furnace |
| CN112251558B (en) * | 2020-10-22 | 2022-05-13 | 马鞍山钢铁股份有限公司 | Hot blast valve cooling water system capable of being switched on line |
| CN114854913B (en) * | 2022-05-19 | 2023-06-27 | 宝武集团鄂城钢铁有限公司 | Method for repairing jump-connection of cooling vertical pipe in blast furnace |
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| CN202808838U (en) * | 2012-07-27 | 2013-03-20 | 天津钢铁集团有限公司 | Cooling device of cooling wall type blast-furnace shaft |
| CN204779638U (en) * | 2015-05-25 | 2015-11-18 | 武汉钢铁(集团)公司 | Blast furnace cooling system |
| CN205803514U (en) * | 2016-07-20 | 2016-12-14 | 马鞍山市飞达波纹管制造有限公司 | A kind of cooling water pipe of cooling wall of blast furnace is repaired structure and suppresses leak finding device |
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| CN102840953A (en) * | 2012-09-27 | 2012-12-26 | 鞍钢股份有限公司 | Blast furnace cooling wall cooling water pipe damage confirmation method |
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