CN110527770A - The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace - Google Patents
The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace Download PDFInfo
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- CN110527770A CN110527770A CN201810678209.1A CN201810678209A CN110527770A CN 110527770 A CN110527770 A CN 110527770A CN 201810678209 A CN201810678209 A CN 201810678209A CN 110527770 A CN110527770 A CN 110527770A
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- hot
- valve
- blast stove
- blast
- furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to the hot detection methods of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace, its detecting step is: the first step, hot-blast stove need to be detected and be transferred to cold stoking state, check and confirm that hot-blast valve, cold blast sliding valve, gas-fired valve, gas stop valve, gas regulator, combustion-supporting combustion air stop valve, combustion-supporting combustion air regulating valve, nitrogen purge valve, the ram valve of the furnace are completely in closed state and close each valve oil cylinder shut-off valve；Second step after opening the purge valve of effective partition hot-blast stove, two chimney valves, carries out exhausting to hot-blast stove body interior using hot-blast stove chimney, forms micro-vacuum state in hot wind furnace body；Third step, opening need to detect hot-blast stove detection position manhole or other holes, and confirmation hot-blast stove body interior has formed micro-vacuum state, and safely controllable, then high temperature endoscope is protruded into inside hot-blast stove and is detected.
Description
Technical field
The invention belongs to temperature detection technology technical field, it is related to hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace
Hot detection method.
Background technique
The primary condition that hot-blast stove body interior carries out the hot detection of high temperature is: hot-blast stove body interior is in tiny structure shape
State just can ensure that operation safety；Hot-blast stove body interior is interfered without obvious breath, just can ensure that detection imaging clearly.Then often
In the state that the hot detection of the blast funnace hot blast stove internal high temperature of rule is all selected at blast furnace staying, hot blast stove system all stops
It carries out, it would be possible to which gas source is shut down or cut off to combustion air, coal gas, nitrogen etc. into hot-blast stove body interior, is opened
One chimney valve and chimney connection form micro-vacuum state, then high temperature endoscope is protruded into hot-blast stove again after opening detection manhole
It is detected inside.
But sometimes under the non-Status of hugh wind of blast furnace, because anomalous variation occurs in hot-blast furnace equipment operating status, it is badly in need of to one
The single or whole hot-blast stove of blast furnace carries out the hot detection of high temperature, and the hot detection of hot-blast stove internal high temperature original in this way must be in height
The technology that can be carried out under furnace damping down situation just can not meet the needs of existing production.To carry out the hot inspection of high temperature to hot-blast stove in time
It surveys, if blast furnace staying will be directly affected blast fumance by selection；If blast furnace not damping down, and hot-blast stove might be delayed
Required timely detection will affect hot-blast furnace equipment service life, blast furnace air temperature etc. again in turn.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, the present invention is provided under a kind of non-Status of hugh wind of blast furnace in hot-blast stove one,
The hot detection method of portion's high temperature, it has required detection hot-blast stove with hot-blast stove total system using the existing valve of hot-blast stove
Effect partition, recycles chimney connection that need to detect hot wind furnace body and carries out exhausting, forms micro-vacuum state in hot-blast stove body interior,
Meet the hot testing requirements of hot-blast stove internal high temperature.
The technical solution adopted by the present invention to solve the technical problems is: under a kind of non-Status of hugh wind of blast furnace inside hot-blast stove
The hot detection method of high temperature, detecting step is:
The first step need to detect hot-blast stove and be transferred to cold stoking state, check the hot-blast valve for confirming the furnace, cold blast sliding valve, gas-fired valve,
Gas stop valve, gas regulator, combustion-supporting combustion air stop valve, combustion-supporting combustion air regulating valve, nitrogen purge valve, ram valve
Etc. being completely in closed state and close each valve oil cylinder shut-off valve, it is detected the air-supply system of hot-blast stove and former hot-blast stove in this way
The gas sources such as cold blast, hot wind, combustion air, coal gas, nitrogen have all carried out effective partition in system, burning furnace system；
Second step, that is, with chimney connection, recycles hot wind after opening the purge valve of effective partition hot-blast stove, two chimney valves
Furnace chimney carries out exhausting to hot-blast stove body interior, forms micro-vacuum state in hot wind furnace body, can reach needed for detection
Condition requirement；
Third step, opening need to detect hot-blast stove detection position manhole or other holes, and confirmation hot-blast stove body interior has formed micro-
Negative pressure state, and it is safely controllable, then high temperature endoscope is protruded into inside hot-blast stove and is detected；After detection, portion will test
Position manhole or other holes restore to the original state, and confirm good seal, then each valve oil cylinder shut-off valve is restored to the original state.
In third step detection process, if there is there is coal gas monitoring, alarming situation, it should will be under combustion state
Another hot-blast stove, which is immediately performed, stops burning and be transferred to cold stoking state, eliminates safe hidden trouble.
It, can to the hot-blast stove of required detection to reduce the influence that hot detection reduces blast furnace air temperature in the third step
To carry out one by one, or by detection-air-supply-burning furnace-detection cycle interval progress.
Operation is related to high temperature in the third step, and appliances for labor protection should have been dressed before operation, prevents from scalding.
Because each seat hot-blast stove and valve are under different process state in first and second step, it is necessary to assume unified command of, really
Recognize, prevents maloperation.
The positive effect of the present invention is: can realize under the non-Status of hugh wind of blast furnace to the hot inspection of hot-blast stove internal high temperature
It surveys, does not also need to increase other equipment investment；Compared with carrying out the hot detection of high temperature under conventional Status of hugh wind, alleviate to blast furnace
The influence of production, and meet the urgent need detection of hot-blast furnace equipment.
Detailed description of the invention
Fig. 1 is hot-blast stove structural schematic diagram.
In figure: 1- hot-blast valve, 2- cold blast sliding valve, 3- air control valve, 4- air cutoff valve, 5- gas regulator, 6- coal gas
Stop valve, 7- gas-fired valve, 8- nitrogen purge valve, 9- chimney valve one, 10- equalizer valve, 11- chimney valve two, 12- purge valve,
13- chimney, 14- flue tube.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, the hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace, its step are as follows:
The first step need to detect hot-blast stove and be transferred to cold stoking state, check hot-blast valve 1, the cold blast sliding valve 2, gas-fired for confirming the furnace
Valve 7, gas stop valve 6, gas regulator 5, air cutoff valve 4, air control valve 3, nitrogen purge valve 8, ram valve 10 etc. are complete
Portion is in close state and closes each valve oil cylinder shut-off valve.It is detected the supply air system of hot-blast stove and former hot-blast stove in this way, burns
The gas sources such as cold blast, hot wind, combustion air, coal gas, nitrogen have all carried out effective partition in furnace system.
Will cause thermal loss due to needing to open coherent detection hole in detection process, and hot-blast stove to dome temperature all
There is higher temperature requirement, so suggesting that hot-blast stove just carries out the hot detection of high temperature after burned dome temperature.
Second step opens the 12 of effective partition hot-blast stove, chimney valve 1, chimney valve 2 11, i.e., sharp with chimney connection
Exhausting is carried out to hot-blast stove body interior by flue tube 14 with hot-blast stove chimney 13, forms tiny structure shape in hot wind furnace body
State, the requirement of condition needed for detection can be reached.Not of uniform size depending on 13 draft of hot-blast stove chimney, usually first begin to rehearse pressure valve 12, flue
Valve 1, subsequent to open chimney valve 2 11 depending on feelings again, principle is exactly that hot-blast stove body interior formation micro-vacuum state is good, subsequent inspection
Gaging hole hole does not steam outward, operation safety, detects imaging clearly, and effect is good.
Third step, opening need to detect hot-blast stove detection position manhole or other holes, confirm hot-blast stove body interior shape
At micro-vacuum state, and it is safely controllable, then high temperature endoscope is protruded into inside hot-blast stove and is detected.After detection, it will examine
It surveys position manhole or other holes restores to the original state, confirm good seal.Each valve oil cylinder shut-off valve is restored to the original state again.
In the detection, if there is there is coal gas monitoring, alarming situation, another hot wind that should will be under combustion state
Furnace, which is immediately performed, stops burning and be transferred to cold stoking state, eliminates safe hidden trouble.
The influence reduced to blast furnace air temperature is detected for reduction is hot, the hot-blast stove of required detection can be carried out one by one, or
It is carried out by detection-air-supply-burning furnace-detection interval.
Operation is related to high temperature in the third step, and appliances for labor protection should have been dressed before operation, prevents from scalding.
Because each seat hot-blast stove and valve are under different process state in first and second step, it is necessary to assume unified command of, really
Recognize, prevents maloperation.
The present invention can be promoted the use of to the large, medium and small different types of hot-blast stove of type blast furnace of the same trade under production status
The hot detection of blast funnace hot blast stove internal high temperature is carried out, at present in certain steel plant 1050,2500m3Blast furnace internal combustion type change top ignition,
It is applied on external combustion stove.This technology can realizes under the non-Status of hugh wind of blast furnace to the hot detection of hot-blast stove internal high temperature,
It does not need to increase other equipment investment yet.Compared with carrying out the hot detection of high temperature under conventional Status of hugh wind, alleviate raw to blast furnace
The influence of production, and the urgent need detection of hot-blast furnace equipment is met, flexibility is very strong, and to hot wind furnace equipment without any danger
Evil.
Claims (5)
1. the hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace, it is characterised in that detecting step is:
The first step need to detect hot-blast stove and be transferred to cold stoking state, check the hot-blast valve for confirming the furnace, cold blast sliding valve, gas-fired valve,
Gas stop valve, gas regulator, combustion-supporting combustion air stop valve, combustion-supporting combustion air regulating valve, nitrogen purge valve, ram valve
It is completely in closed state and closes each valve oil cylinder shut-off valve, the supply air system of hot-blast stove detected in this way and former hot-blast stove,
It burns the gas sources such as cold blast, hot wind, combustion air, coal gas, nitrogen in furnace system and has all carried out effective partition；
Second step, that is, with chimney connection, recycles hot wind after opening the purge valve of effective partition hot-blast stove, two chimney valves
Furnace chimney carries out exhausting to hot-blast stove body interior, forms micro-vacuum state in hot wind furnace body, can reach needed for detection
Condition requirement；
Third step, opening need to detect hot-blast stove detection position manhole or other holes, and confirmation hot-blast stove body interior has formed micro-
Negative pressure state, and it is safely controllable, then high temperature endoscope is protruded into inside hot-blast stove and is detected；After detection, portion will test
Position manhole or other holes restore to the original state, and confirm good seal, then each valve oil cylinder shut-off valve is restored to the original state.
2. the hot detection method of hot-blast stove internal high temperature under the non-Status of hugh wind of blast furnace as described in claim 1, it is characterised in that: In
In third step detection process, if there is there is coal gas monitoring, alarming situation, another hot wind that should will be under combustion state
Furnace, which is immediately performed, stops burning and be transferred to cold stoking state, eliminates safe hidden trouble.
3. the hot detection method of hot-blast stove internal high temperature under the non-Status of hugh wind of blast furnace as described in claim 1, it is characterised in that: In
In the third step for reduce it is hot detect the influence that reduces to blast furnace air temperature, to the hot-blast stove of required detection can one by one into
Row, or carried out by detection-air-supply-burning furnace-detection cycle interval.
4. the hot detection method of hot-blast stove internal high temperature under the non-Status of hugh wind of blast furnace as described in claim 1, it is characterised in that: institute
It states operation in third step and is related to high temperature, appliances for labor protection should have been dressed before operation, prevent from scalding.
5. the hot detection method of hot-blast stove internal high temperature under the non-Status of hugh wind of blast furnace as described in claim 1, it is characterised in that: institute
It states in the first and second step because each seat hot-blast stove and valve are under different process state, it is necessary to assume unified command of, confirm, prevent
Maloperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810678209.1A CN110527770A (en) | 2018-06-27 | 2018-06-27 | The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810678209.1A CN110527770A (en) | 2018-06-27 | 2018-06-27 | The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace |
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| CN110527770A true CN110527770A (en) | 2019-12-03 |
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| CN201810678209.1A Pending CN110527770A (en) | 2018-06-27 | 2018-06-27 | The hot detection method of hot-blast stove internal high temperature under a kind of non-Status of hugh wind of blast furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088603A (en) * | 2021-04-09 | 2021-07-09 | 广东韶钢松山股份有限公司 | Hot blast stove and sectional type pressure test leakage detection method of hot blast stove |
| CN113718076A (en) * | 2021-09-18 | 2021-11-30 | 重庆钢铁股份有限公司 | Method for repairing hot air outlet of hot air furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08325615A (en) * | 1995-05-26 | 1996-12-10 | Sumitomo Metal Ind Ltd | Forcedly cooling method at the time of repairing ceramic burner in hot stove |
| CN1618991A (en) * | 2004-11-12 | 2005-05-25 | 马鞍山钢铁股份有限公司 | Exchange technology of hot air furnace hot air short pipe |
| CN105369002A (en) * | 2015-12-09 | 2016-03-02 | 天津钢铁集团有限公司 | Repair tooling of hot-blast branch pipe lining of hot-blast furnace and repair method thereof |
-
2018
- 2018-06-27 CN CN201810678209.1A patent/CN110527770A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08325615A (en) * | 1995-05-26 | 1996-12-10 | Sumitomo Metal Ind Ltd | Forcedly cooling method at the time of repairing ceramic burner in hot stove |
| CN1618991A (en) * | 2004-11-12 | 2005-05-25 | 马鞍山钢铁股份有限公司 | Exchange technology of hot air furnace hot air short pipe |
| CN105369002A (en) * | 2015-12-09 | 2016-03-02 | 天津钢铁集团有限公司 | Repair tooling of hot-blast branch pipe lining of hot-blast furnace and repair method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘振均 等: "热风炉热状态下内衬耐火材料外观状态的检查与判断", 《炼铁》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088603A (en) * | 2021-04-09 | 2021-07-09 | 广东韶钢松山股份有限公司 | Hot blast stove and sectional type pressure test leakage detection method of hot blast stove |
| CN113088603B (en) * | 2021-04-09 | 2022-05-20 | 广东韶钢松山股份有限公司 | Hot blast stove and sectional type pressure test leakage detection method of hot blast stove |
| CN113718076A (en) * | 2021-09-18 | 2021-11-30 | 重庆钢铁股份有限公司 | Method for repairing hot air outlet of hot air furnace |
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Application publication date: 20191203 |
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