CN109321700A - A kind of blast furnace cooling wall breakage detection separation method - Google Patents
A kind of blast furnace cooling wall breakage detection separation method Download PDFInfo
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- CN109321700A CN109321700A CN201710637479.3A CN201710637479A CN109321700A CN 109321700 A CN109321700 A CN 109321700A CN 201710637479 A CN201710637479 A CN 201710637479A CN 109321700 A CN109321700 A CN 109321700A
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- cooling wall
- blast furnace
- cooling
- breakage
- separation method
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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 present invention provides a kind of blast furnace cooling wall breakage detection separation method, it is related to the processing when on-line cooling wetting system breakage of blast-furnace body cooled region emphasis equipment, blast-furnace cooled water system in the process of running, using the damaged early warning mechanism of cooling equipment, solves production operation problem；Cooling equipment can pass through the variation of tank liquid level after breakage, branch pipe difference in flow is forecast, the switching of piping, the quick cooling equipment of processing leakage of isolation, improve the inspection and quick processing of blast furnace cooling wall breakage, the harm of the cooling equipment leak of elimination.The present invention is reduced blast furnace energy consumption and cooling water outflow and prevents water quality deterioration, solved to the security risks such as field operation regional temperature height, gas concentration height, large labor intensity by forecast, confirmation, isolation fast reaction and processing.
Description
Technical field
The present invention relates to the cooling equipment technical fields of blast furnace, and in particular to a kind of blast furnace cooling wall breakage detection
Separation method.
Background technique
Domestic blast furnace cooling water pipe network generally uses a string of water pipe connection types on earth, also has using middle transition
Segmented mode, but the design method blast furnace in actual use, there are early warning speed when breakage for blast furnace cooling stave
Slowly, check that confirmation difficulty is big, control effect is unobvious, to cause the fluctuation of the blast fumance working of a furnace and fuel consumption big.
Early warning speed is that blast furnace has been mounted with head tank and expansion tube in the design process slowly, mainly passes through head tank
Liquid level change to determine that blast-furnace cooled water has the phenomenon that leakage because blast-furnace cooled water pipe is close and numerous, flange leakage be ratio
More typically, therefore extremely difficult determining liquid level changes damaged cooling wall position, cannot achieve quick processing.Check confirmation difficulty
It is blast furnace greatly when design, is mounted with that coal gas detects valve on cooling wall liaison tube, liquid level occurs in high furnace head tank and becomes
When change, liquid level inspection is carried out to more than 200 water pipes, it is extremely difficult that personnel put into big operating environment difference processing.Control effect is unknown
It is aobvious when being that blast furnace checks certain a string of cooling wall cooling water pipe breakage, it can only be carried out in process of production using control feedwater flow
Maintenance, the method cause cooling water largely to leak to a large amount of heat of absorption in furnace, and fuel digestion is big, the cooling in cooling system
Water can not only be flowed into furnace by damaged mouth, and also result in when gas-water interface pressure fluctuates blast furnace gas seal in it is cold
But internal system, cooling equipment breakage leak into furnace can cause heat dissipation in furnace to obviously increase and hydrogen in stock gas is caused to contain
Amount is risen, and the digestion of soft water water is big.Another kind is to switch to water supply and use industry water instead to be cooled down, and controls water, still
Cooling wall is since drop height forms pressure difference, in most of cooling water leakage to furnace, if reducing water, the small top cooling wall of water
It can not cool down and online processing can not be carried out.
Summary of the invention
(1) the technical issues of solving
That in breakage, there are early warning speed in order to overcome above-mentioned blast furnace cooling stave is slow by the present invention, the big, control that checks confirmation difficulty
The unconspicuous defect problem of effect processed provides a kind of blast furnace cooling wall breakage detection separation method, realizes blast furnace cold
But equipment confirms from early warning mechanism to inspection to operation processing detached job when breakage, does not leave damaged cooling wall and causes
Hidden danger, solve to the security risks such as field operation regional temperature height, gas concentration height, large labor intensity.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of blast furnace cooling wall breakage detection separation method, comprising the following steps:
S1, the early warning of blast furnace cooling water leakage is carried out by high furnace head tank liquid level difference in change；
S2, forecast that branch pipe is damaged by blast furnace region collector or branch pipe difference in flow；
S3, the position that cooling wall breakage is judged by the switching being piped between cooling wall；
S4, damaged cooling wall is isolated, carries out valve transfer, guarantee that the water supply of normal cooling wall is cooling, and will break
Cooling wall is damaged to carry out individually carrying out nitrogen cooling.
Further, the Coolant-Level that the step S1 is set by head tank removes the variation of evaporation capacity, abnormal to mend
Water trend is that blast furnace cooling water has leakage phenomenon, and blast furnace operating personnel must check blast furnace cooling water.
Further, the Coolant-Level upper limit that the head tank is set is 1.8m, lower limit 1.2m.
Further, the step S2 blast furnace cooling wall cooling wall is using a string of whole cast iron materials form on earth,
It is attached in such a way that part 3-5 sections of collector excessively adjusts, detection early warning is carried out using pressure flow detection, forecasts discharge
Water difference flow changes, and indicates that collector or branch pipe cooling water have the phenomenon that leakage, operator is supervised to carry out cooling water pipe
Check confirmation.
Further, the collector is copper cooling wall collector.
Further, the step S3 installs semisphere valve using cooling wall piping position.
Further, the diameter of the semisphere valve is 65mm.
Further, ball valve is installed inside and outside the semisphere valve, switches over confirmation damaged part cooling wall.
Further, the diameter of the ball valve is 38mm.
Further, the semisphere valve of damaged cooling wall inlet and outlet pipes 65mm is closed after the step S4 valve transfer, is broken
It damages the 38mm ball valve on the inside of cooling wall 65mm and leads to nitrogen cooling, 38mm ball valve on the outside of 65mm is subjected to the normal interim water pipe of cooling water
Connection is incorporated to normal water system operation.
(3) beneficial effect
Beneficial effects of the present invention: a kind of blast furnace cooling wall breakage detection separation method, blast-furnace cooled water system exist
In operational process, using the damaged early warning mechanism of cooling equipment, production operation problem is solved；Cooling equipment can pass through after breakage
Quickly processing leaks cooling equipment for the variation of tank liquid level, the forecast of branch pipe difference in flow, the switching of piping, isolation, and it is cold to improve blast furnace
But the harm of cooling equipment leak is eliminated in the inspection of wall breakage and quickly processing；By forecast, confirmation, isolation fast reaction and
Processing reduces blast furnace energy consumption and cooling water outflow and prevents water quality deterioration, solves the high, coal to field operation regional temperature
The security risks such as gas concentration height, large labor intensity.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the method for the present invention flow chart；
Fig. 2 is that cooling equipment valve configures exploded view；
In figure, 1 be cooling wall, 2 be cooling wall, 3 be cooling wall, 4 be cooling wall, 5 be cooling wall, 6 be cooling wall piping,
7 be nitrogen discharge valve, 8 be nitrogen enter valve, 9 be the cooling water outlet pipe of cooling wall 1,10 be cooling wall 2 cooling water
Water inlet pipe, 11 be the cooling water outlet pipe of cooling wall 2,12 be the cooling water inlet pipe of cooling wall 3,13 be cooling wall 1 and cooling
The liaison tube of wall 3,14 be flowing water Valve, 15 be shut-off valve, 16 be by-passing valve, 17 be by-pass line, 18 be bypass duct, 19 be
By-passing valve, 20 be shut-off valve, 21 be inlet valve.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In conjunction with Fig. 1, a kind of blast furnace cooling wall breakage detection separation method, comprising the following steps:
S1, the early warning of blast furnace cooling water leakage is carried out by high furnace head tank liquid level difference in change.
The Coolant-Level set by head tank, removes the variation of evaporation capacity, and abnormal moisturizing trend is that blast furnace is cold
But water has leakage phenomenon, and blast furnace operating personnel must check blast furnace cooling water, checks accurate premise necessarily
Cooling water pipe does not have the premise of External leakage.The Coolant-Level that head tank is set can set the upper limit as 1.8m, and lower limit is
1.2m。
S2, forecast that branch pipe is damaged by blast furnace region collector or branch pipe difference in flow.
General blast furnace cooling wall is a string of forms on earth using whole cast iron materials, using part 3-5 sections of collector
The mode excessively adjusted is attached, and carries out detection early warning using pressure flow detection, and forecast plumbing difference flow changes,
Indicate that the collector or branch pipe cooling water have the phenomenon that leakage, operator is supervised to carry out cooling water pipe inspection confirmation.Collector can
To use copper cooling wall collector.
S3, the position that cooling wall breakage is judged by the switching being piped between cooling wall.
As many as up to 10 string of furnace body cooling wall cooling water pipe connection, height fall is in 20-25m, pressure inspection and liquid level inspection
Damaged cooling wall site can not accurately be confirmed by looking into.Use cooling wall piping position installation diameter for 65mm semisphere valve, semisphere valve
Inside and outside be equipped with diameter be 38mm ball valve, switch over confirmation damaged part cooling wall.
S4, damaged cooling wall is isolated, carries out valve transfer, guarantee that the water supply of normal cooling wall is cooling, and will break
Cooling wall is damaged to carry out individually carrying out nitrogen cooling.
The semisphere valve of damaged cooling wall inlet and outlet pipes 65mm is closed after valve transfer, on the inside of damaged cooling wall 65mm
38mm ball valve leads to nitrogen cooling, and 38mm ball valve on the outside of 65mm is carried out the interim water pipe connection of normal cooling water and is incorporated to normal water system
Operation.
Exploded view is configured in conjunction with the cooling equipment valve of Fig. 2,1,2,3,4,5 be five pieces of longitudinally adjacent cooling walls, and 6 be cooling
Wall piping, cooling wall is piped and is separately installed with nitrogen discharge valve 7, nitrogen enters valve 8.9 go out for the cooling water of cooling wall 1
Water pipe, 10 be the cooling water inlet pipe of cooling wall 2,11 be the cooling water outlet pipe of cooling wall 2,12 be cooling wall 3 cooling water
Water inlet pipe, 13 be cooling wall 1 and cooling wall 3 liaison tube.14 be the outlet valve on the liaison tube 13 of cooling wall 1 and cooling wall 3
Door, 21 be the inlet valve on the liaison tube 13 of cooling wall 1 and cooling wall 3, and 15 is on the cooling water outlet pipes 9 of cooling wall 1
Shut-off valve 17 is the by-pass line of the cooling water inlet pipe 10 of cooling wall 2,16 is by-passing valve on by-pass line 17, and 18 be cold
But the bypass duct on the cooling water outlet pipe 11 of wall 2,19 be the by-passing valve on by-pass line 18, and 20 be the cooling of cooling wall 3
Shut-off valve on water water inlet pipe 12.
Blast furnace cooling stave is divided into five sections, such as cooling wall 2 breaks down, and confirms that cooling wall 2 is damaged by valve transfer, adopts
It is connect with cooling wall 1 with the liaison tube 13 of cooling wall 3 with flowing water Valve 14, inlet valve 21, cooling wall 1 and cooling wall 3 are normal
Water flowing, leakage area are eliminated.Such as cooling wall 4 is damaged, the control and processing of cooling wall are as follows, and 4 breakage of cooling wall is separately connected
Nitrogen discharge valve 7, nitrogen enter valve 8, are cooled down by nitrogen inlet to nitrogen outlet, maintain production, avoid cooling down
The further deterioration of wall.
In conclusion the invention has the characteristics that: (1) blast-furnace cooled water system in the process of running, leaks extremely
Complete process design solves plant maintenance and safety in production operation.Since cooling equipment is broken caused by by stress and thermal wear
Damage, enters a large amount of cooling water in furnace, influences smooth operation of furnace and fuel consumption, the accident of high stove cool furnace is caused when serious, because
This improves the damaged early warning mechanism of cooling equipment, solves production operation problem；(2) inspection of blast furnace cooling wall breakage is improved
With the fast method of processing.Cooling equipment after breakage can by the variation of tank liquid level, the forecast of branch pipe difference in flow, the switching being piped,
Be isolated quickly processing and leak cooling equipment, eliminates the harm of cooling equipment leak；(3) prominent production is towards intelligent automation
Blast furnace energy consumption and cooling water outflow are reduced by forecast, confirmation, isolation fast reaction and processing with reduction energy consumption
And prevent water quality deterioration.
The embodiment of the present invention is related to the place when on-line cooling wetting system breakage of blast-furnace body cooled region emphasis equipment
Reason, can to blast furnace in process of production because of each position cooling wall breakage when early warning confirmation check and quickly processing, to protect
Card blast furnace ensures the use of normal cooling wall in cooling equipment breakage and conditions of blast furnace is stable and fuel digests and cooling water
Digestion, solves to the security risks such as field operation regional temperature height, gas concentration height, large labor intensity.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of blast furnace cooling wall breakage detects separation method, which comprises the following steps:
S1, the early warning of blast furnace cooling water leakage is carried out by high furnace head tank liquid level difference in change；
S2, forecast that branch pipe is damaged by blast furnace region collector or branch pipe difference in flow；
S3, the position that cooling wall breakage is judged by the switching being piped between cooling wall；
S4, damaged cooling wall is isolated, carries out valve transfer, guarantee that the water supply of normal cooling wall is cooling, and will be damaged cold
But wall carries out individually carrying out nitrogen cooling.
2. a kind of blast furnace cooling wall breakage as described in claim 1 detects separation method, it is characterised in that: the step
The Coolant-Level that S1 is set by head tank, removes the variation of evaporation capacity, and abnormal moisturizing trend is that blast furnace cooling water has
Leakage phenomenon, blast furnace operating personnel must check blast furnace cooling water.
3. a kind of blast furnace cooling wall breakage as claimed in claim 2 detects separation method, it is characterised in that: the head
The Coolant-Level upper limit that tank is set is 1.8m, lower limit 1.2m.
4. a kind of blast furnace cooling wall breakage as described in claim 1 detects separation method, it is characterised in that: the step
S2 blast furnace cooling wall cooling wall is excessively adjusted using a string of whole cast iron materials form on earth using part 3-5 sections of collector
Mode be attached, detection early warning is carried out using pressure flow detection, forecast plumbing difference flow changes, and indicates collector
Or branch pipe cooling water has the phenomenon that leakage, and operator is supervised to carry out cooling water pipe inspection confirmation.
5. a kind of blast furnace cooling wall breakage as claimed in claim 4 detects separation method, it is characterised in that: the collector
For copper cooling wall collector.
6. a kind of blast furnace cooling wall breakage as described in claim 1 detects separation method, it is characterised in that: the step
S3 installs semisphere valve using cooling wall piping position.
7. a kind of blast furnace cooling wall breakage as claimed in claim 6 detects separation method, it is characterised in that: the hemisphere
The diameter of valve is 65mm.
8. a kind of blast furnace cooling wall breakage as claimed in claim 7 detects separation method, it is characterised in that: the hemisphere
Ball valve is installed inside and outside valve, switches over confirmation damaged part cooling wall.
9. a kind of blast furnace cooling wall breakage as claimed in claim 8 detects separation method, it is characterised in that: the ball valve
Diameter be 38mm.
10. a kind of blast furnace cooling wall breakage as claimed in claim 9 detects separation method, it is characterised in that: the step
The semisphere valve of damaged cooling wall inlet and outlet pipes 65mm, the 38mm ball on the inside of damaged cooling wall 65mm are closed after rapid S4 valve transfer
Valve leads to nitrogen cooling, and 38mm ball valve on the outside of 65mm is carried out the interim water pipe connection of normal cooling water and is incorporated to normal water system operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710637479.3A CN109321700B (en) | 2017-07-31 | 2017-07-31 | Blast furnace body cooling wall damage detection and separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710637479.3A CN109321700B (en) | 2017-07-31 | 2017-07-31 | Blast furnace body cooling wall damage detection and separation method |
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| CN109321700A true CN109321700A (en) | 2019-02-12 |
| CN109321700B CN109321700B (en) | 2020-11-17 |
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| CN114002222A (en) * | 2020-07-28 | 2022-02-01 | 宝山钢铁股份有限公司 | Intelligent flaw detection device, system and method for in-service pipeline |
| CN114317942A (en) * | 2020-09-28 | 2022-04-12 | 上海梅山钢铁股份有限公司 | Method for judging and processing water leakage in hot galvanizing horizontal furnace |
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| CN114317942B (en) * | 2020-09-28 | 2024-05-10 | 上海梅山钢铁股份有限公司 | Method for judging and treating water leakage in hot galvanizing horizontal furnace |
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