CN105969924A - Blast furnace cooling-wall cooling water pipe repairing method and structure thereof and pressure leakage detection device - Google Patents
Blast furnace cooling-wall cooling water pipe repairing method and structure thereof and pressure leakage detection device Download PDFInfo
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- CN105969924A CN105969924A CN201610573661.2A CN201610573661A CN105969924A CN 105969924 A CN105969924 A CN 105969924A CN 201610573661 A CN201610573661 A CN 201610573661A CN 105969924 A CN105969924 A CN 105969924A
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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
- C21B7/10—Cooling; Devices therefor
- C21B7/103—Detection of leakages of the cooling liquid
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Abstract
The invention discloses a blast furnace cooling-wall cooling water pipe repairing method and a structure thereof and a pressure leakage detection device, belonging to the technical field of iron making blast furnace production. The repairing method disclosed by the invention comprises the steps of pressure leakage detection, disconnection of a damaged cooling water pipe, leakage point bypass, threading of the damaged cooling water pipe, silk threading of the damaged cooling water pipe, pipe threading of the damaged cooling water pipe, external connection of a water source, grouting and the like. The repairing structure of the blast furnace cooling-wall cooling water pipe disclosed by the invention comprises the damaged cooling water pipe, a cooling water-in end at the upper part of the damaged cooling water pipe and a cooling water-out end at the lower part, wherein the cooling water-in end and the cooling water-out end are folded outward and communicated through an external cooling pipe, and a metal hose penetrates inside; a gap formed between the metal hose and the damaged cooling water pipe is filled with a high-heat conduction grouting layer; and a bypass pipe is arranged at the upper part of the external cooling pipe. In the invention, the problems that the service life of the blast furnace cooling wall is influenced and the repairing cost is high due to the imbalance between the local cooling effect and peripheral cooling effect in water leakage repairing of the blast furnace cooling wall are effectively solved.
Description
Technical field
The present invention relates to blast furnace production technical field, particularly relate to a kind of cooling water pipe of cooling wall of blast furnace restorative procedure and knot thereof
Structure and suppress leak finding device.
Background technology
Cooling wall seepy question annoyings domestic each big small furnace always.Once leak and directly affect blast furnace stable smooth operation.And do not have
The method having had solves seepy question, if dealing with improperly, may result in copper cooling wall and damaging.Blast furnace is forced to be repaiied, very in shifting to an earlier date
To overhaul.Therefore, solve seepy question and become the key that current blast fumance index optimizes further.
Most of processing methods that domestic cooling wall leaks are divided into two kinds:
One is that soft water switches to industry water, controls the inflow of industry water, thus controls the water yield draining in stove, it is impossible to solves
Seepy question.Continuing if leaked to expand or serious, the cooling wall water pipe that will leak splits and is in the milk, and so can accelerate cooling
The progress that wall damages.
Two is to carry out wearing metal hose to the copper cooling wall water pipe leaked.Industry water or soft water it is passed through after poling, then to being worn
It is in the milk between metal hose and raw water tubes, thus cools down copper cooling wall.This more advanced, water can be stopped and enter in stove,
There is provided optimum condition for operation in stove, and the service life of copper cooling wall can be extended to greatest extent.But this method by
Cause in leaking former damaged cooling tube internal friction resistance relatively big, and metal hose quality is soft, easily damaged during poling,
Need to repeat poling, cause cost higher.
Chinese patent publication No. CN102534078A, the patent documentation of publication date: 2012.07.04 discloses a kind of blast furnace cooling
Wall cooling water pipe replacement method, is disconnected breakage cooling water pipe with front and rear part cooling water pipe, will front and back be cooled down by external water pipe again
Water pipe connects, and makes cooling water cross damaged cooling water pipe and direct circulation.In damaged cooling water pipe, penetrate a metal soft simultaneously
Pipe, metal hose is connected on the replacement cooling water pipe that communicates with external water source by the seamless steel pipe at two ends, in making metal hose
Cooling water independently formed a path, continue to realize refrigerating function.This invention is not affecting the positive normal open of other cooling water pipes
In the case of water cooling, it is achieved that the quick replacement of damaged cooling water pipe, eliminate drainage in blast furnace, it is to avoid under furnace temperature
The coke ratio that fall causes rises problem, has recovered to damage the refrigerating function of cooling water pipe, it is ensured that the cooling effect of cooling wall, and
The service life of cooling wall can be extended.Although the method has recovered to damage the refrigerating function of cooling water pipe, but metal hose and side
Siphunculus water source can not synchronize and same flow, causes the unbalanced of Local cooling effect and periphery cooling effect to have impact on blast furnace cooling
The service life of wall.
Summary of the invention
1. invention to solve the technical problem that
Leak for blast furnace cooling stave present in prior art to repair and cause the unbalanced of Local cooling effect and periphery cooling effect
And have impact on the service life of blast furnace cooling stave, problem that rehabilitation cost is high, the invention provides a kind of blast furnace cooling stave cooling water
Pipe restorative procedure and structure thereof and suppress leak finding device.It is unbalanced without Local cooling after can realizing low cost reparation and repairing
Purpose.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention provides is:
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure, operating procedure is:
Step one, suppress and look for leakage: suppress equipment with leak detection and the cooling wall water pipe of every layer of blast furnace is suppressed, find leak source；System
The use of equipment is suppressed in the special leak detection of, it is not necessary to every layer prepares pressuring pump；
Step 2, damaged cooling water pipe block: after confirming leakage point, close the inlet valve of this leakage point, it is to avoid cooling water mistake
Degree runs off and affects the operation of other cooling tube；And block reserved one section of damaged cooling including this leakage point up and down at leakage point
Water pipe, as the carrier wearing metal hose；
Step 3, leak source bypass: after folding outside the cooling water inlet end on damaged cooling water pipe top and the cooling water outlet end of bottom, logical
Cross external cooling tube and will cool down water inlet end and cooling water outlet end bypass, thus do not affect the cooling of the cooling wall outside leak source；
Step 4, the threading of damaged cooling water pipe: will roll over outside the two ends of damaged cooling water pipe, by the soft wooden shot being slightly less than caliber
Or iron sheet ball is connected to flexible cord, the other end of flexible cord is fixed, and the soft wooden shot connected or iron sheet bulb stopper enter damaged cooling water pipe,
Then access compressed air, by compressed air, soft wooden shot or iron sheet ball are blown into from the upper end of damaged cooling water pipe, lower end blow
Go out, thus by flexible cord through damaged cooling water pipe；The effect of impurity in playing lead-in wire and clearing up pipeline；Flexible cord to soft wooden shot or
The resistance of iron sheet ball is little, avoids the line resistance harmful effect to lead-in wire as far as possible；
Step 5, damaged cooling water pipe wear silk: utilize flexible cord again by iron wire through damaged cooling water pipe；Iron wire intensity is more than soft
Line, twice lead-in wire, wire strength is ascending, and twice lead-in wire can be successful, it is to avoid the excessive duplication of labour；
Step 6, the poling of damaged cooling water pipe: utilize iron wire caliber to be slightly less than the metal hose of damaged cooling water pipe through broken
Damage cooling water pipe；Iron wire intensity is big, can metal hose pull-out will not be disconnected；
Step 7, external water source: by the two ends of metal hose external water inlet pipe and outlet pipe respectively, thus play former leak source
The cooling effect of cooling wall.
Preferably, step 8, grouting are also included: by the making beating mouth offered at the external part of damaged cooling water pipe toward metal hose
And the space between breakage cooling water pipe charges high heat conduction grouting material, play fixing metal hose and the dual function of conduction heat,
Avoid metal hose to produce frictional property displacement due to the effect of current, and reduce the service life of metal hose.
Preferably, in step 8, two external parts at damaged cooling water pipe offer making beating mouth and venthole, and sealing both ends respectively
Annular mouth, allows making beating work more smoothly with uniform, it is to avoid during making beating, slurry is internal produces the uniform of unnecessary aeration slurry
Distribution.
Preferably, step 7 is by seamless link pipe, the two ends of metal hose are connected external cooling tube form water inlet pipe and go out
Water pipe, allows cooling current synchronize to carry out, improves the synchronicity of cooling effect.
Preferably, the external cooling tube between water inlet pipe and outlet pipe arranges water valve, when needing to synchronize, close water valve, nothing
When need to synchronize, opening water valve, simple to operate, motility is strong.
Preferably, connect on external cooling tube top and have the valvular bypass pipe of band, play the effect of regulation cooling water flow, increase
Flow to greatly the water speed of metal hose, compensate the unbalanced cooling effect caused less than former cooling tube due to caliber, closely avoid office
The service life that portion's cooling wall is different due to cooling effect and produces the different changes expanded with heat and contract with cold and affects blast furnace；Pipe connects and i.e. rises
To connecting metal hose and the effect of seamless link pipe, also act as the effect sealing slurry；Described seamless link pipe connect by pipe and
The two ends of metal hose connect, and seal on the outer bending tube being fixed on damaged cooling water pipe, i.e. play connection metal hose and nothing
The effect of seam connecting tube, also acts as the effect sealing slurry.
Preferably, described metal hose is corrugated tube, variable folding, and intensity is big, high temperature resistant, and bending is not easy to damage；Described height
Heat conduction grouting material is carbonaceous heat conduction material, and heat conductivity is strong, and fineness is little, makes the mating reaction of making beating mouth and venthole more significantly,
Heat conduction material is easily accessible the outer corrugations groove of corrugated tube, and, after being heated, after slight expansion and being tightly combined of corrugated tube,
Thus heat fixation is effective；Described flexible cord is nylon wire, and other flexible cord intensity relatively is big, and curvature performance is good, and line resistance is little；Described
Cooling water inlet end, cooling water outlet end and the Jun Waizhe right angle, two ends of damaged cooling water pipe, and have curve transition at folding outside, side
Just external pipe and location.
Preferably, described step one is suppressed the method looked for leakage and is:
After A, damping down, produce the three-way valve closing one layer of cooling water pipe of cooling wall to be suppressed, and the water intaking valve of cooling wall top layer；
Slip spade in B, cooling wall water pipe between every two-layer of cooling wall N shell to cooling wall top layer, each blind plate is inserted in
Before air bleeding valve；
C, confirm blind plate weld seam one enclose full weld after, suppress flexible pipe respectively with following which floor air bleeding valve connect；
1) air bleeding valve with cooling wall N shell～cooling wall N+1 layer is connected, and suppresses the cold of cooling wall one layer～cooling wall N+1 layer
But wall water pipe；
2) air bleeding valve with cooling wall N+1 layer～cooling wall N+2 layer is connected, and suppresses the cooling wall water pipe of cooling wall N+2 layer；
3) air bleeding valve with cooling wall N+2 layer～cooling wall N+3 layer is connected, and suppresses the cooling wall water pipe of cooling wall N+3 layer；
4) air bleeding valve with cooling wall N+3 layer～cooling wall top layer is connected, and suppresses the cooling wall water pipe of cooling wall top layer；
D, confirm to suppress after water pipe all connects, check joint and suppress flexible pipe without leaking, after inspection, simultaneously to cooling
The cooling wall water pipe of wall 1～N+1 layer, N+2 layer, N+3 layer and top layer is suppressed；
1) if 1～N+1 layer cooling wall water pipe leaks, wouldn't process, cooling water switches to industry water；Owing to blast furnace high level belongs to
In high-temperature region, cooling water pipe easily produces leak source, and 1 to N shell belongs to relatively low warm area, typically will not produce leak source, when 1
During to N shell generation leak source, relative to high-temperature region, it is easier to process and use otherwise processed；Cooling water switches to industry
The purpose of water is to avoid cooling down excessively running off and affecting the operation of other cooling water pipe of water, and the cooling water system of blast furnace is relatively to seal
The system closed, runs off and too much can affect the cooling effect of other cooling water pipe；
2) if N+2 layer cooling wall water pipe leaks, N+2 layer is split；
3) if N+3 layer cooling wall water pipe leaks, N+3 layer is split；
4) if top layer cooling wall water pipe leaks, top layer is split；
Whole suppressing looks for method leakage easily 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 top
Cooling water inlet end and the cooling water outlet end of bottom；The two ends of described damaged cooling water pipe and cooling water inlet end, cooling water outlet end all outside
Fold cooling wall；Described cooling water inlet end is connected by external cooling tube after folding with outside cooling water outlet end；Described damaged cooling water pipe
High heat conduction grout blanket, damaged cooling water pipe is filled in being inside installed with the gap that metal hose, metal hose and damaged cooling water pipe are formed
The external part at two ends has venthole and making beating mouth, and the external part port at two ends is connect and 2 seamless companies by 2 pipes respectively
After adapter connection, 2 seamless link pipes connect with external cooling tube again；Arrange on external cooling tube between 2 seamless link pipes
Water valve；External cooling tube top has bypass pipe.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure suppress leak finding device, including main Shui Bao, Fen Shuibao, blind plate, aerofluxus
Valve, suppress the cooling wall water pipe within flexible pipe and each layer cooling wall；Connected by connecting tube between described main Shui Bao and point water bag,
Point water bag outwards separates the connection hard tube of parallel connection, connects hard tube again and after suppressing soft pipe connection, suppresses flexible pipe again by the row of each layer
Air valve and each layer cooling wall water pipe communicate；Top layer cooling wall water pipe arranges water intaking valve, and bottom cooling wall water pipe arranges three-way valve；Often
Slip spade in the cooling wall water pipe of two-layer, before each blind plate is inserted in the air bleeding valve of every layer, whole device is looked for Lou accurate, easily
Operation, and saves the spare part of pressuring pump and the cost of maintenance, most importantly can be in the shortest time, judge the most accurately
Which layer cooling wall leaks, thus saves the repair time, shortens the blast furnace staying time, improves index and the operating rate of blast furnace.
3. beneficial effect
The technical scheme using the present invention to provide, compared with prior art, has the advantages that
(1) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention, by soft wooden shot or iron sheet ball and compressed-air actuated
Coordinating, passed by lead-in wire, soft wooden shot or iron sheet ball are slightly less than caliber, have both played compressed air air pressure and have maximized sphere pressure
Effect, moreover it is possible to playing the effect that take out of of impurity will penetrated into owing to leaking, during poling, the resistance of metal hose greatly reduces,
Avoid secondary or repeat poling, reducing siphunculus cost；
(2) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention, high heat conduction grouting material injects space, plays fixing gold
Belong to flexible pipe and the effect of conduction heat；
(3) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention, making beating mouth and the mating reaction of venthole, allow making beating
Work is more smoothly with uniform, it is to avoid during making beating, slurry is internal produces being uniformly distributed of unnecessary aeration slurry；
(4) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention and structure thereof, seamless company is passed through at the two ends of metal hose
Adapter connects external cooling tube, allows cooling current synchronize to carry out, improves the synchronicity of cooling effect；
(5) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention and structure thereof, between water inlet pipe and outlet pipe outside
Connect and water valve is set on cooling tube, when needing to synchronize, close water valve, it is not necessary to during synchronization, open water valve, simple to operate, motility
By force；
(6) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention and structure, bypass pipe and valve thereof, play regulation
The effect of cooling water flow, increases the water speed flowing to metal hose, compensates owing to caliber is unbalanced less than what former cooling tube caused
Cooling effect, closely avoids Local cooling wall to produce the different changes expanded with heat and contract with cold due to cooling effect difference and affect blast furnace
Service life；Pipe connects and i.e. plays connection metal hose and the effect of seamless link pipe, also acts as the effect sealing slurry；
(7) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention and structure thereof, corrugated tube mutability rolls over, and intensity is big, resistance to
High temperature, it is not easy to damage；Carbonaceous heat conduction material heat conductivity is strong, and fineness is little, allow making beating mouth and venthole mating reaction more
Significantly, heat conduction material is easily accessible the outer corrugations groove of corrugated tube, and, after being heated, after slight expansion and the combination of corrugated tube
Closely, thus heat fixation is effective；Nylon wire is big relative to other flexible cord intensity, and curvature performance is good；Cool down water inlet end, cool down out
Water end (W.E.) and the Jun Waizhe right angle, two ends of damaged cooling water pipe, facilitate external pipe and location；
(8) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention and structure thereof, suppress and look for method leakage easily to operate,
Leak source accurate positioning；Owing to blast furnace high level belongs to high-temperature region, cooling water pipe easily produces leak source, and 1 to N shell belongs to relatively low
Warm area, typically will not produce leak source, when 1 to N shell produces leak source, relative to high-temperature region, is easier to process and use it
Its mode processes；Cooling water switches to the purpose of industry water to be to avoid cooling down excessively running off and affecting the fortune of other cooling water pipe of water
OK, the cooling water system of blast furnace is the system of relative closure, runs off and too much can affect the cooling effect of other cooling water pipe；
(9) the reparation structure of a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention, efficiently solves blast furnace cooling stave leakage
Water reparation causes Local cooling effect to have impact on the service life of blast furnace cooling stave with the unbalanced of periphery cooling effect, repair into
This high problem；
(10) a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention suppress leak finding device, it is Lou accurate to look for, and easily grasps
Make, and save the spare part of pressuring pump and the cost of maintenance, most importantly can be in the shortest time, which judges the most accurately
Layer cooling wall leaks, thus saves the repair time, shortens the blast furnace staying time, improves index and the operating rate of blast furnace.
Accompanying drawing explanation
Fig. 1 cooling wall cooling water pipe scattergram；
Fig. 2 is the schematic diagram of the reparation structure of a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present invention；
Fig. 3 is the schematic diagram suppressing leak finding device of a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present 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 heat conduction grout blanket；6, external cooling tube；7, seamless link pipe；8, bypass pipe；9, pipe connects；10, cooling wall；
11, main water bag；12, connecting tube；13, Fen Shuibao；14, hard tube is connected；15, blind plate；16, air bleeding valve；17, pressure
Table；18, water intaking valve；19, three-way valve；20, flexible pipe is suppressed；21, cooling wall one layer；22, cooling wall N shell；23, cold
But wall N+1 layer；24, cooling wall N+2 layer；25, cooling wall N+3 layer；26, cooling wall top layer；30, cooling wall water pipe；
31, external part；61, water valve；311, venthole；312, making beating mouth.
Detailed description of the invention
For further appreciating that present disclosure, in conjunction with accompanying drawing, the present invention is described in detail.
ф 73 × 6: represent caliber 73mm, length 6m, other similar data structure expression of the same race.
Embodiment 1
One 4000m of certain steel plant3Blast furnace is lighted a fire respectively in February, 2005 and May and is gone into operation so far, produces to be constantly in and stablizes
Effec-tive Function, but find that cooling wall exists damage in various degree from the beginning of this year, by investigate 8B in the middle part of current A blast-furnace shaft,
Tri-times straight-through cooling water pipes of 20D, 57A leak, and the most at least three pieces of cooling walls exist drainage.More than 12 layers of A blast furnace is cold
But wall water pipe structure is as it is shown in figure 1, every piece of cooling wall has 4 water pipes, is respectively labeled as A, B, C, D.8B represents the 8th
Block cooling wall B pipe, remainder is analogized.
In view of conventional experience, once there is this damaged condition in blast-furnace body cooling device, the damage speed of blast-furnace body cooling device
Degree will be more and more faster；Blast furnace just comes into furnace retaining and protects the product stage.
According to current production status, normally producing for ensureing, extension device uses the cycle, surely following maintenance guarantor's product scheme of drawing up:
One, prepare before maintenance
1, first blast furnace cooling stave soft water must be separated investigation, substantially judge at 13～14 layers at present.
2, prepare leak detection and suppress equipment, high-pressure pump, metal hose, snap joint, metal hose is installed the pressure of 0～5Mpa
Power table.
3, during periodical repair, water inlet/outlet pipe of cooling wall must first be cut off the water by equipment, and cooling water pipe is suppressed experiment by maintainer's tissue,
Judge whether to leak.If without leaking, recover cooling tube, supply water as early as possible.
Two, according to suppressing the leakage point that experiment detects, below scheme is used to overhaul:
1, the cooling wall soft water Inlet and outlet water of leakage point at this is disconnected, lower floor's cooling water outlet end and last layer water inlet pipe UNICOM, former
Design uses cooling caliber to be ф 73 × 6, then the selection of soft water external cooling tube 6 is ф 76 × 6 seamless steel pipe, and inwall needs at pickling
Reason.One DN65～the manual ball valve of 25 are installed in the middle of external cooling tube 6；Press in advance under 3m length one section according to figure paper size
Material, 90 ° of two quarter bend is excessive, and short tube long 1.5m in two prepares some standby.Pipeline is connected by the set of ф 89 × 6～40
Sealing of tube.
2, leak the water supply of cooling wall, use 28.5 meters of platform spraying cooling in late period endless tubes, caliber ф 273 × 10, if upper prepackage
The seamless steel pipe short tube of dry group ф 60 × 5, DN50 is installed in centre～25 manual ball valves are controlled, and ф 60 short tube is inserted directly into leakage
In water cooling wall water inlet pipe, pipeline is connected by the sleeve pipe welding of ф 76 × 6～40.
3, leak the water outlet of cooling wall, use ф 60 × 3.5 seamless steel pipe, from 28.5 meters of platforms all the way up to 36 meters of platforms,
Nearby water outlet is introduced platform southwest, two, northeast water leg；Separately the water outlet at cooling wall installs air bleeding valve.
4, for the ease of maintenance in the future and operation, in the bottom of 28.5 meters of platform spraying cooling in late period endless tube caliber ф 273 × 10
The blowoff valve of installation DN150, each 1 of south, north, totally 2.
Three, leak cooling wall poling
If 57A water pipe breakage is leaked relatively big, use a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present embodiment,
Operating procedure is:
Step one, damaged cooling water pipe block: after confirming leakage point, close the inlet valve of this leakage point, it is to avoid cooling water mistake
Degree runs off and affects the operation of other cooling tube；And block reserved one section of damaged cooling including this leakage point up and down at leakage point
Water pipe 3, as the carrier wearing metal hose；
Step 2, leak source bypass: by cooling water inlet end 1 and the outer folding of cooling water outlet end 2 of bottom on damaged cooling water pipe 3 top
After, by external cooling tube 6, cooling water inlet end 1 and cooling water outlet end 2 are bypassed, thus do not affect the cooling wall outside leak source
Cooling；
Step 3, the threading of damaged cooling water pipe: by rolling over outside the two ends of the damaged cooling water pipe 3 of ф 73, with the soft wood of ф 70
Ball or iron sheet ball are connected to flexible cord, and the other end of flexible cord is fixed, and the soft wooden shot connected or iron sheet bulb stopper enter damaged cooling water pipe
3, then access compressed air, by compressed air, soft wooden shot or iron sheet ball be blown into from the upper end of damaged cooling water pipe 3, by under
End blowout, thus by flexible cord through damaged cooling water pipe 3；In playing lead-in wire and clearing up pipeline, the effect of impurity, thorough in order to clear up
The end, blow pressure can be repeated several times, it is also possible on spheroid radial line, arrange tangent line shovel, cleaned out by impurity；Flexible cord is to soft wooden shot
Or the resistance of iron sheet ball is little, avoid the line resistance harmful effect to lead-in wire as far as possible；
Step 4, damaged cooling water pipe wear silk: utilize flexible cord again by iron wire through damaged cooling water pipe 3；Iron wire intensity is more than
Flexible cord, twice lead-in wire, wire strength is ascending, and twice lead-in wire can be successful, it is to avoid the excessive duplication of labour；
Step 5, the poling of damaged cooling water pipe: utilize iron wire by the metal hose 4 of caliber ф 40 through damaged cooling water pipe 3；
Iron wire intensity is big, can be pulled out by metal hose 4 and will not disconnect；
Step 6, external water source: by the two ends of metal hose 4 external water inlet pipe and outlet pipe respectively, thus play former leak source
The cooling effect of place's cooling wall.
Embodiment 2
The restorative procedure of a kind of cooling water pipe of cooling wall of blast furnace of the present embodiment, concrete steps are substantially with embodiment 1, improvements
It is: also include step 7, grouting: soft toward metal by the making beating mouth 312 offered at the external part 31 of damaged cooling water pipe 3
Space between pipe 4 and damaged cooling water pipe 3 charges high heat conduction grouting material, plays fixing metal hose and conduct the double of heat
Recast is used, it is to avoid metal hose produces frictional property displacement due to the effect of current, and reduces the service life of metal hose, and
External part 31 at the other end outputs pore 311, and sealing both ends annular mouth, allows making beating work more smoothly with uniform, it is to avoid to beat
During slurry, slurry is internal produces being uniformly distributed of unnecessary aeration slurry.
Embodiment 3
The restorative procedure of a kind of cooling water pipe of cooling wall of blast furnace of the present embodiment, concrete steps are substantially with embodiment 2, improvements
It is: the two ends of metal hose 4 are connected external cooling tube 6 by seamless link pipe 7 by step 6 and forms water inlet pipe and water outlet
Pipe, allows cooling current synchronize to carry out, improves the synchronicity of cooling effect.Can also external cold between water inlet pipe and outlet pipe
But on pipe 6, water valve 61 is set, when needing to synchronize, closes water valve, it is not necessary to during synchronization, open water valve, simple to operate, motility
By force.
Embodiment 4
The restorative procedure of a kind of cooling water pipe of cooling wall of blast furnace of the present embodiment, concrete steps are substantially with embodiment 3, improvements
It is: connect on external cooling tube 6 top and have the valvular bypass pipe 8 of band, play the effect of regulation cooling water flow, increase
Flow to the water speed of metal hose, compensate the unbalanced cooling effect caused less than former cooling tube due to caliber, closely avoid local
The service life that cooling wall is different due to cooling effect and produces the different changes expanded with heat and contract with cold and affects blast furnace；Pipe connects and i.e. plays
Connect metal hose and the effect of seamless link pipe, also act as the effect sealing slurry；Described seamless link pipe 7 connects 9 by pipe
Connect with the two ends of metal hose 4, and seal on the outer bending tube being fixed on damaged cooling water pipe 3, i.e. play connection metal soft
Pipe and the effect of seamless link pipe, also act as the effect sealing slurry.Described metal hose 4 can be corrugated tube, variable folding,
Intensity is big, high temperature resistant, and bending is not easy to damage；Described high heat conduction grouting material is carbonaceous heat conduction material, and heat conductivity is strong, and fineness
Little, make making beating mouth and the mating reaction of venthole more significantly, heat conduction material is easily accessible the outer corrugations groove of corrugated tube, and,
After being heated, after slight expansion and being tightly combined of corrugated tube, thus heat fixation is effective；Described flexible cord is nylon wire, relatively
Other flexible cord intensity is big, and curvature performance is good, and line resistance is little；Described cooling water inlet end 1, cooling water outlet end 2 and damaged cooling water
The Jun Waizhe right angle, two ends of pipe 3, and have curve transition at folding outside, facilitate external pipe and location.
Embodiment 5
The restorative procedure of a kind of cooling water pipe of cooling wall of blast furnace of the present embodiment, concrete steps are substantially with embodiment 4, improvements
It is:
Cooling water pipe is suppressed experiment suppress the method looked for leakage and be:
After A, damping down, as it is shown on figure 3, produce the three-way valve 19 closing one layer of 1 cooling water pipe of cooling wall to be suppressed and cold
But the water intaking valve 18 of wall top layer 26；
Slip spade 15 in B, cooling wall water pipe 30 between every two-layer of cooling wall N shell 22 to cooling wall top layer 26, each
Before blind plate 15 is all inserted in air bleeding valve 16；In the present embodiment, N shell is the 8th layer；
C, confirm that the weld seam one of blind plate 15 encloses full weld after, suppress flexible pipe 20 and connect with which floor air bleeding valve 16 following respectively；
1) air bleeding valve 16 with cooling wall 8 layer 22～cooling wall 9 layer 23 is connected, and suppresses cooling wall one layer 21～cooling wall 9
The cooling wall water pipe 30 of layer 23；
2) air bleeding valve 16 with cooling wall 9 layer 23～cooling wall 10 layer 24 is connected, and suppresses the cooling wall of cooling wall 10 layer 24
Water pipe 30；
3) air bleeding valve 16 with cooling wall 10 layer 24～cooling wall 11 layer 25 is connected, and suppresses the cooling of cooling wall 11 layer 25
Wall water pipe 30；
4) air bleeding valve 16 with cooling wall 11 layer 25～cooling wall top layer 26 is connected, and suppresses the cooling wall of cooling wall top layer 26
Water pipe 30；
D, confirm to suppress after water pipe all connects, check joint and suppress flexible pipe 20 without leaking, after inspection, simultaneously to cold
But the cooling wall water pipe 30 of wall 1～9 layers, 10 layers, 11 layers and top layer is suppressed；
1) if 1～9 layer of cooling wall water pipe 30 leaks, wouldn't process, cooling water switches to industry water；Owing to blast furnace is high-rise
Belonging to high-temperature region, cooling water pipe easily produces leak source, and 1 to 8 layer belongs to relatively low warm area, typically will not produce leak source, when
During 1 to 8 layer of generation leak source, relative to high-temperature region, it is easier to process and use otherwise processed；Cooling water switches to work
The purpose of industry water is to avoid cooling down excessively running off and affecting the operation of other cooling water pipe of water, and the cooling water system of blast furnace is relative
The system closed, runs off and too much can affect the cooling effect of other cooling water pipe；
2) if 10 layers of cooling wall water pipe 30 leak, 10 layers are split；
3) if 11 layers of cooling wall water pipe 30 leak, 11 layers are split；
4) if top layer cooling wall water pipe 30 leaks, top layer is split；
Whole suppressing looks for method leakage easily to operate, leak source accurate positioning.
The reparation structure that a kind of cooling water pipe of cooling wall of blast furnace method of the present embodiment is formed, as in figure 2 it is shown, include damaged cold
But water pipe 3 and the cooling water inlet end 1 on damaged cooling water pipe 3 top and the cooling water outlet end 2 of bottom；Described damaged cooling water
Two ends and cooling water inlet end 1, the cooling water outlet end 2 of pipe 3 fold cooling wall 10 all outward；Described cooling water inlet end 1 and cooling down out
Connected by external cooling tube 6 after the outer folding of water end (W.E.) 2；It is installed with metal hose 4, metal hose 4 in described damaged cooling water pipe 3
Filling high heat conduction grout blanket 5 with in the gap of damaged cooling water pipe 3 formation, the external part 31 at damaged cooling water pipe 3 two ends is respectively
Having venthole 311 and making beating mouth 312, external part 31 port at two ends connects 9 and 2 seamless link pipes by 2 pipes respectively
After 7 connections, 2 seamless link pipes 7 connect with external cooling tube 6 again；External cooling tube 6 between 2 seamless link pipes 7
On water valve 61 is set；External cooling tube 6 top has bypass pipe 8.
The reparation structure of a kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present embodiment, efficiently solves blast furnace cooling stave and leaks
Repair and cause the unbalanced of Local cooling effect and periphery cooling effect to have impact on the service life of blast furnace cooling stave, rehabilitation cost
High problem.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure of the present embodiment suppress leak finding device, as it is shown on figure 3, include main water
Bag 11, point water bag 13, blind plate 15, air bleeding valve 16, suppress the cooling wall water pipe 30 within flexible pipe 20 and each layer cooling wall；
Being connected by connecting tube 12 between described main water bag 11 and point water bag 13, point water bag 13 outwards separates the connection hard tube 14 of parallel connection,
Connect hard tube 14 and again and suppress after flexible pipe 20 connects, suppress flexible pipe 20 and pass through the air bleeding valve 16 of each layer and each layer cooling wall water again
Pipe 30 communicates；Top layer cooling wall water pipe 30 arranges water intaking valve 18, and bottom cooling wall water pipe 30 arranges three-way valve 19；Every two-layer
Cooling wall water pipe 30 in slip spade 15, before each blind plate 15 is inserted in the air bleeding valve 16 of every layer, whole device is looked for Lou accurate
Really, easily operate, and save the spare part of pressuring pump and the cost of maintenance, most importantly can in the shortest time, the most accurate
Which layer cooling wall of true judgement leaks, thus saves the repair time, shortens the blast furnace staying time, improves the index of blast furnace
And operating rate.
Schematically being described the present invention and embodiment thereof above, this description does not has restricted, shown in accompanying drawing yet
Simply one of embodiments of the present invention, actual structure is not limited thereto.So, if those of ordinary skill in the art
Enlightened by it, in the case of without departing from the invention objective, design the knot similar to this technical scheme without creative
Structure mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a cooling water pipe of cooling wall of blast furnace restorative procedure, it is characterised in that operating procedure is:
Step one, suppress and look for leakage: suppress equipment with leak detection and the cooling wall water pipe (30) of every layer of blast furnace is suppressed, find leakage
Point；
Step 2, damaged cooling water pipe block: after confirming leakage point, close the inlet valve of this leakage point, and at leakage point
Block reserved one section of damaged cooling water pipe (3) including this leakage point up and down；
Step 3, leak source bypass: by cooling water inlet end (1) and the cooling water outlet end of bottom on damaged cooling water pipe (3) top
(2) after rolling over outward, will cooling water inlet end (1) and cooling water outlet end (2) bypass by external cooling tube (6)；
Step 4, the threading of damaged cooling water pipe: by rolling over outside the two ends of damaged cooling water pipe (3), 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 connected or iron sheet bulb stopper enter damaged cooling water
Pipe (3), then accesses compressed air, soft wooden shot or iron sheet ball is blown from the upper end of damaged cooling water pipe (3) by compressed air
Enter, lower end blow out, thus by flexible cord through damaged cooling water pipe (3)；
Step 5, damaged cooling water pipe wear silk: utilize flexible cord again by iron wire through damaged cooling water pipe (3)；
Step 6, the poling of damaged cooling water pipe: utilize iron wire that caliber is slightly less than the metal hose (4) of damaged cooling water pipe (3)
Through damaged cooling water pipe (3)；
Step 7, external water source: by the two ends of metal hose (4) external water inlet pipe and outlet pipe respectively.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 1, it is characterised in that: also include step
Eight, grouting: by the past metal hose (4) of making beating mouth (312) offered at the external part (31) of damaged cooling water pipe (3)
And the space between breakage cooling water pipe (3) charges high heat conduction grouting material.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 2, it is characterised in that: in step 8
Two external parts (31) of damaged cooling water pipe (3) offer making beating mouth (312) and venthole (311) respectively, and seal two
End annular mouth.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 2, it is characterised in that: step 7 is
The two ends of metal hose (4) are connected external cooling tube (6) by seamless link pipe (7) and forms water inlet pipe and outlet pipe.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 4, it is characterised in that: at water inlet pipe and
On external cooling tube (6) between outlet pipe, water valve (61) is set.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 4, it is characterised in that: in external cooling
Pipe (6) top connects the valvular bypass pipe of band (8)；Described seamless link pipe (7) connects (9) and metal hose by pipe
(4) two ends connect, and seal on the outer bending tube being fixed on damaged cooling water pipe (3).
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 6, it is characterised in that: described metal is soft
Pipe (4) is corrugated tube；Described high heat conduction grouting material is carbonaceous heat conduction material；Described flexible cord is nylon wire；Described cooling water inlet end (1),
Cooling water outlet end (2) and the Jun Waizhe right angle, two ends of damaged cooling water pipe (3), and have curve transition at folding outside.
A kind of cooling water pipe of cooling wall of blast furnace restorative procedure the most according to claim 6, it is characterised in that: described step one
Suppressing the method looked for leakage is:
After A, damping down, produce the three-way valve (19) closing one layer of (1) cooling water pipe of cooling wall to be suppressed, and cooling wall top
The water intaking valve (18) of layer (26)；
B, cooling wall water pipe (30) interpolation between every two-layer of cooling wall N shell (22) to cooling wall top layer (26) are blind
Plate (15), before each blind plate (15) is inserted in air bleeding valve (16)；
C, confirm that the weld seam one of blind plate (15) encloses full weld after, suppress flexible pipe (20) respectively with which floor air bleeding valve (16) following
Connect；
1) air bleeding valve (16) with cooling wall N shell (22)～cooling wall N+1 layer (23) is connected, and suppresses cooling wall one layer
～the cooling wall water pipe (30) of cooling wall N+1 layer (23) (21)；
2) air bleeding valve (16) with cooling wall N+1 layer (23)～cooling wall N+2 layer (24) is connected, and suppresses cooling wall N+2
The cooling wall water pipe (30) of layer (24)；
3) air bleeding valve (16) with cooling wall N+2 layer (24)～cooling wall N+3 layer (25) is connected, and suppresses cooling wall N+3
The cooling wall water pipe (30) of layer (25)；
4) air bleeding valve (16) with cooling wall N+3 layer (25)～cooling wall top layer (26) is connected, and suppresses cooling wall top layer
(26) cooling wall water pipe (30)；
D, confirm to suppress after water pipe all connects, check joint and suppress flexible pipe (20) without leaking, after inspection, simultaneously
The cooling wall water pipe (30) of cooling wall 1～N+1 layer, N+2 layer, N+3 layer and top layer is suppressed；
1) if 1～N+1 layer cooling wall water pipe (30) leaks, wouldn't process, cooling water switches to industry water；
2) if N+2 layer cooling wall water pipe (30) leaks, N+2 layer is split；
3) if N+3 layer cooling wall water pipe (30) leaks, N+3 layer is split；
4) if top layer cooling wall water pipe (30) leaks, top layer is split.
9. the reparation structure of a cooling water pipe of cooling wall of blast furnace restorative procedure according to claim 8, it is characterised in that:
Including damaged cooling water pipe (3) and the cooling water inlet end (1) on damaged cooling water pipe (3) top and the cooling water outlet end of bottom
(2)；The two ends of described breakage cooling water pipe (3) and cooling water inlet end (1), cooling water outlet end (2) are all outer folds cooling wall
(10)；Described cooling water inlet end (1) is connected by external cooling tube (6) after rolling over outward with cooling water outlet end (2)；Described broken
Fill out in being installed with the gap that metal hose (4), metal hose (4) and damaged cooling water pipe (3) are formed in damaging cooling water pipe (3)
Filling high heat conduction grout blanket (5), the external part (31) at damaged cooling water pipe (3) two ends has venthole (311) and beats
Slurry mouth (312), external part (31) port at two ends connects (9) by 2 pipes respectively and connects with 2 seamless link pipes (7)
After, 2 seamless link pipes (7) connect with external cooling tube (6) again；External cooling between 2 seamless link pipes (7)
On pipe (6), water valve (61) is set；External cooling tube (6) top has bypass pipe (8).
10. cooling water pipe of cooling wall of blast furnace restorative procedure according to claim 8 suppress a leak finding device, its feature
It is: include main water bag (11), Fen Shuibao (13), blind plate (15), air bleeding valve (16), suppress flexible pipe (20) and each
Layer cooling wall water pipe (30) within cooling wall；By connecting tube (12) between described main water bag (11) and point water bag (13)
Connection, Fen Shuibao (13) outwards separates the connection hard tube (14) of parallel connection, connects hard tube (14) and again and suppresses flexible pipe (20) even
After Tong, suppress the flexible pipe (20) air bleeding valve (16) and each layer cooling wall water pipe (30) again by each layer and communicate；Top layer cools down
Wall water pipe (30) arranges water intaking valve (18), and bottom cooling wall water pipe (30) arranges three-way valve (19)；The cooling wall of every two-layer
Water pipe (30) interior slip spade (15), before each blind plate (15) is inserted in the air bleeding valve (16) of every 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 |
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| CN112251558A (en) * | 2020-10-22 | 2021-01-22 | 马鞍山钢铁股份有限公司 | Hot blast valve cooling water system capable of being switched on line |
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| 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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