CN108956459A - A kind of resistance to hot detection method of material in hot-blast stove inside - Google Patents
A kind of resistance to hot detection method of material in hot-blast stove inside Download PDFInfo
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- CN108956459A CN108956459A CN201710388298.1A CN201710388298A CN108956459A CN 108956459 A CN108956459 A CN 108956459A CN 201710388298 A CN201710388298 A CN 201710388298A CN 108956459 A CN108956459 A CN 108956459A
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- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000012795 verification Methods 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 41
- 239000011449 brick Substances 0.000 claims description 30
- 230000001172 regenerating effect Effects 0.000 claims description 10
- 230000035772 mutation Effects 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 6
- 244000144985 peep Species 0.000 claims description 6
- 238000013517 stratification Methods 0.000 claims description 6
- 230000005619 thermoelectricity Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 235000018290 Musa x paradisiaca Nutrition 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 240000005561 Musa balbisiana Species 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000234295 Musa Species 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0044—Furnaces, ovens, kilns
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8803—Visual inspection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/909—Investigating the presence of flaws or contamination in a container or its contents in opaque containers or opaque container parts, e.g. cans, tins, caps, labels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/063—Illuminating optical parts
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to the resistance to hot detection method of material inside a kind of hot-blast stove, step is first to determine detection hole and detection content using hot wind furnace body original design drawing as foundation；Further according to the thickness of hole from inside to outside, the model of Portable high temperature endoscope is selected；Stop burning in hot-blast stove again, after safety verification, opens the steel shell cover plate for manhole on detection hole or temporarily dismantle temperature instrumentation, Portable high temperature endoscope, which is inserted into former modular tile duct or the duct rectified and improved, to be detected；Recycle replacement hot-blast valve chance range estimation hot-blast outlet and the resistance to material operation conditions of middle part partition wall；Finally confirm fault type and position.Achieve the effect that delay service life, avoids that blast fumance is caused to seriously affect because hot-blast stove is without plan failure blowing out.
Description
Technical field
The invention belongs to the hot state inspection fields of the resistance to material of blast funnace hot blast stove, are related to a kind of resistance to material heat in hot-blast stove inside
State detection method.
Background technique
The main Types of hot-blast stove have three kinds of internal combustion type, external-burning, top ignition etc. at present, and wherein first two accounts for about 60%.Heat
Resistance to material is after long-play inside wind furnace, due to the variation of resistance to material physical and chemical index itself, will lead to resistance to material inside hot-blast stove
State and internal structure change, and phenomena such as crack, bulge, sedimentation such as occur, further development will form inside hot-blast stove
The wall of resistance to material Durchgangshohle collapses, burns, and eventually leads to hot-blast stove and is forced out of service, blast furnace air temperature level is greatly lowered.By
In hot-blast stove be enclosed construction, it is daily to want understand its internal resistance to material operating status by range estimation or instrument detection.It is existing
Common detection methods to the resistance to material state in hot-blast stove inside are all cold examinations, i.e., after hot-blast stove is out of service, open related
Duct carries out prolonged cool furnace by resistance to material feature, regulation temperature lowering curve, enters back into inside hot-blast stove and manually checked.Often
Advising cold examination is all subsequent failure blowing out inspection, cannot timely feedback out in advance, then controlled by technique adjustment,
Delay or notices ahead of time.The final result that not can be carried out hot detection is usually exactly: to the operation conditions of the resistance to material in hot-blast stove inside
It is unclear, or even cause hot-blast stove without planned maintenance, the normal production of blast furnace is disturbed, can not adapt to modern continuous, stablize height
The needs of furnace production.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, the present invention provides a kind of hot-blast stove inside the resistance to hot detection method of material,
After it can use blast furnace periodic maintenance, hot-blast stove is transferred to stewing oven-like state, using high temperature endoscope or by other tools, from heat
Wind furnace designs to be inserted into upper existing equipment pore, carries out direct imaging or indirectly judgement, is intuitively reflected each inside hot-blast stove
The resistance to material operation conditions in position, by being compared with former design structure, in time accurately inside discovery hot-blast stove existing for resistance to material
Failure can control its operating status later by adjusting hot stove furnace technology, achieve the effect that delay service life, avoid
Because hot-blast stove is without plan failure blowing out, blast fumance is caused to seriously affect, also provides technical basis for maintenance later.
The technical solution adopted by the present invention to solve the technical problems is: a kind of resistance to hot detection side of material in hot-blast stove inside
Method, its step are as follows:
The first step determines detection hole and detection content using hot wind furnace body original design drawing as foundation, and detection hole is design
In it is existing, do not excavate new bore in principle；The detection content packet of peep hole or fire hole above internal combustion stove burner
It includes: burner surface checkerwork cell state, in the partition wall of combustion chamber, lower state, hot-blast outlet state；On external combustion stove burner
The peep hole of side or the detection content of fire hole include: burner surface checkerwork cell state, hot-blast outlet state, in combustion chamber, under
Portion's status；The detection content in the thermoelectricity occasionally infrared measurement of temperature hole above internal combustion stove vault includes: checker brick surface
Situation, partition block surface appearance, gas well mouth and vault situation；Thermoelectricity above external combustion stove regenerative chamber, combustion chamber vault
The detection content in occasionally infrared measurement of temperature hole includes: checker brick surface appearance, regenerative chamber, combustion chamber vault situation, liaison tube nozzle
Situation, combustion chamber upper interior situation；
Second step selects the model of Portable high temperature endoscope according to the thickness of hole from inside to outside.It is required that in Portable high temperature
The effective length of sight glass just can ensure that the integrality of detection imaging at least more than hole 200~300mm of thickness, meet in length
Under the premise of have to confirm that the diameter of original plan hole is greater than 20~30mm of high temperature endoscope diameter；
Step 3: stopping burning in hot-blast stove, after safety verification, opens the steel shell cover plate for manhole on detection hole or temporarily dismantle thermometric
Instrument, Portable high temperature endoscope, which is inserted into former modular tile duct or the duct rectified and improved, to be detected, to ensure to examine
The integrality of survey, the camera lens of replaceable multiple angles, and video capture is carried out as needed.After detection to detection hole or
Temperature instrumentation is restored, and before being detected, to fully understand the operating status of hot-blast stove, and combine different type hot-blast stove
Weak part carries out emphasis detection；
Step 4: opening furnace bottom fire grate manhole steel shell cover board, the 180 ° of refractory brick in top are removed, with floodlighting light irradiation fire grate
Sub- lower section dust stratification, confirms checker brick regenerative chamber state according to dust stratification amount, using replacement hot-blast valve chance range estimation hot-blast outlet and in
The resistance to material operation conditions of portion's partition wall；
Step 5: confirmation fault type and position, in the case where situation is normal, structure and shape inside hot-blast stove are all complete clean
, then can determine whether it is that its associated resistance to material in a part has mutation if there is foreign matter；
For different refractory brick because physical and chemical index is different, adjacent regions are easy to appear mutation position, as internal combustion stove partition wall goes out
The position that existing " bulge ", refractory brick protrude usually appears in the delivery position of two kinds of refractory brick brick kinds.Influence resistance to material hair
Another factor of raw mutation is exactly the alternating variation of running environment, combustion chamber and accumulation of heat such as internal combustion stove partition wall both sides
Room in one cycle always in burn furnace low pressure, high temperature and air-supply high pressure, compared with low-temperature condition alternate cycles, finally influence repeatedly
The stability of partition wall and generation " banana " effect；
Failure exception position can be calculated by the size of absolute altitude and the used refractory brick of corresponding site on design drawing, lookup
Come.
Operation is related to high temperature in third and fourth described step, and appliances for labor protection should have been dressed before operation, have prevented from scalding.
The beneficial effects of the present invention are: using blast furnace periodic maintenance, hot-blast stove operation suspension chance, using being peeped in high temperature
Mirror or by other tools, insertion carries out direct imaging or indirectly judgement from hot-blast stove existing equipment pore, in time precisely
Ground finds failure existing for resistance to material inside hot-blast stove, can control its operating status by adjusting hot stove furnace technology later, reach
To the effect for delaying service life, avoid that blast fumance is caused to seriously affect because hot-blast stove is without plan failure blowing out.Also for it
Maintenance afterwards provides technical basis.
Detailed description of the invention
Fig. 1 is hot-blast stove structural schematic diagram.
The combustion chamber 1-, 2- refractory brick, 3- infrared measurement of temperature hole, 4- checker brick, the big wall brick of 5- vault.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Fig. 1, a kind of resistance to hot detection method of material in hot-blast stove inside, its step are as follows:
The first step determines detection hole and detection content using hot wind furnace body original design drawing as foundation, and detection hole is design
In it is existing, do not excavate new bore in principle；The detection content packet of peep hole or fire hole above internal combustion stove burner
It includes: burner surface checkerwork cell state, in 1 partition wall of combustion chamber, lower state, hot-blast outlet state；External combustion stove burner
The peep hole of top or the detection content of fire hole include: burner surface checkerwork cell state, hot-blast outlet state, combustion chamber
In [ygx1], lower state state；The detection content packet in the thermoelectricity occasionally infrared measurement of temperature hole 3 above internal combustion stove vault
It includes: 4 surface appearance of checker brick, partition block surface appearance 2, gas well mouth and vault situation；External combustion stove regenerative chamber, combustion chamber
The detection content of thermoelectricity occasionally infrared measurement of temperature hole [ygx3] above [ygx2] vault includes: the surface checker brick [ygx4] shape
Condition, regenerative chamber, combustion chamber [ygx5] vault situation, liaison tube nozzle situation, combustion chamber upper interior situation；
Second step selects the model of Portable high temperature endoscope according to the thickness of hole from inside to outside.It is required that in Portable high temperature
The effective length of sight glass just can ensure that the integrality of detection imaging at least more than hole 200~300mm of thickness, meet in length
Under the premise of have to confirm that the diameter of original plan hole is greater than 20~30mm of high temperature endoscope diameter；
Step 3: stopping burning in hot-blast stove, after safety verification, opens the steel shell cover plate for manhole on detection hole or temporarily dismantle thermometric
Instrument, Portable high temperature endoscope, which is inserted into former modular tile duct or the duct rectified and improved, to be detected, to ensure to examine
The integrality of survey, the camera lens of replaceable multiple angles, and video capture is carried out as needed.After detection to detection hole or
Temperature instrumentation is restored, and before being detected, to fully understand the operating status of hot-blast stove, and combine different type hot-blast stove
Weak part carries out emphasis detection；
Step 4: opening furnace bottom fire grate manhole steel shell cover board, the 180 ° of refractory brick 2 in top are removed, with floodlighting light irradiation furnace
Dust stratification below grate confirms 4 regenerative chamber state of checker brick according to dust stratification amount, using replacement hot-blast valve chance range estimation hot-blast outlet and
The resistance to material operation conditions of middle part partition wall；
Step 5: confirmation fault type and position, in the case where situation is normal, structure and shape inside hot-blast stove are all complete clean
, then can determine whether it is that its associated resistance to material in a part has mutation if there is foreign matter；
For different refractory brick 2 because physical and chemical index is different, adjacent regions are easy to appear mutation position, as internal combustion stove partition wall goes out
The position that existing " bulge ", refractory brick 2 protrude usually appears in the delivery position of two kinds of refractory brick, 2 brick kind.Influence resistance to material
Another factor that mutation occurs is exactly the alternating variation of running environment, such as 1 He of combustion chamber on internal combustion stove partition wall both sides
Regenerative chamber in one cycle always in burn furnace low pressure, high temperature and air-supply high pressure, compared with low-temperature condition alternate cycles, finally repeatedly
Influence the stability and generation " banana " effect of partition wall；
Failure exception position can be searched and be calculated by the size of absolute altitude and the used refractory brick 2 of corresponding site on design drawing
Out.
After the present invention can be transferred to stewing oven-like state using blast furnace periodic maintenance, hot-blast stove, using high temperature endoscope or by it
His tool, insertion carries out direct imaging or indirectly judgement from hot-blast stove existing equipment pore, accurately finds hot wind in time
Failure existing for the resistance to material of furnace interior can control its operating status later by adjusting hot stove furnace technology, reach delay using
The effect in service life avoids causing to seriously affect to blast fumance because hot-blast stove is without plan failure blowing out.Also the maintenance after being mentions
For technical basis.
Operation is related to high temperature in third and fourth described step, and appliances for labor protection should have been dressed before operation, have prevented from scalding.
The present invention can be promoted the use of to the resistance to material in inside of large, medium and small type blast furnace internal combustion type of the same trade, external combustion stove
Hot detection, at present in Baoshan Iron and Steel Group's Shaoguan steel 2500,3200m3It is applied on external-burning, internal combustion stove, Ke Yili
It is carried out with blast furnace periodic maintenance chance, to blast fumance, for hot-blast stove body equipment without influence, operation is easier, can precisely, directly
Failure existing for the resistance to material in resistance to material inside inside hot-blast stove is watched out, and by adjusting hot stove furnace technology, controls its and runs shape
State reaches and delays service life, avoids hot-blast stove because operating status is unknown, without effective control measure, hot-blast stove is caused to go out suddenly
Existing failure, causes significant impact to blast fumance, while the hot-blast stove for after repairs or overhaul provides technical basis.
Claims (1)
1. the resistance to hot detection method of material inside a kind of hot-blast stove, it is characterised in that steps are as follows:
The first step determines detection hole and detection content using hot wind furnace body original design drawing as foundation, and detection hole is design
In it is existing, do not excavate new bore in principle；The detection content packet of peep hole or fire hole above internal combustion stove burner
It includes: burner surface checkerwork cell state, in the partition wall of combustion chamber, lower state, hot-blast outlet state；On external combustion stove burner
The peep hole of side or the detection content of fire hole include: burner surface checkerwork cell state, hot-blast outlet state, in combustion chamber, under
Portion's status；The detection content in the thermoelectricity occasionally infrared measurement of temperature hole above internal combustion stove vault includes: checker brick surface
Situation, partition block surface appearance, gas well mouth and vault situation；Thermoelectricity above external combustion stove regenerative chamber, combustion chamber vault
The detection content in occasionally infrared measurement of temperature hole includes: checker brick surface appearance, regenerative chamber, combustion chamber vault situation, liaison tube nozzle
Situation, combustion chamber upper interior situation；
Second step selects the model of Portable high temperature endoscope according to the thickness of hole from inside to outside；It is required that in Portable high temperature
The effective length of sight glass just can ensure that the integrality of detection imaging at least more than hole 200~300mm of thickness, meet in length
Under the premise of have to confirm that the diameter of original plan hole is greater than 20~30mm of high temperature endoscope diameter；
Step 3: stopping burning in hot-blast stove, after safety verification, opens the steel shell cover plate for manhole on detection hole or temporarily dismantle thermometric
Instrument, Portable high temperature endoscope, which is inserted into former modular tile duct or the duct rectified and improved, to be detected, to ensure to examine
The integrality of survey, the camera lens of replaceable multiple angles, and video capture is carried out as needed；After detection to detection hole or
Temperature instrumentation is restored, and before being detected, to fully understand the operating status of hot-blast stove, and combine different type hot-blast stove
Weak part carries out emphasis detection；
Step 4: opening furnace bottom fire grate manhole steel shell cover board, the 180 ° of refractory brick in top are removed, with floodlighting light irradiation fire grate
Sub- lower section dust stratification, confirms checker brick regenerative chamber state according to dust stratification amount, using replacement hot-blast valve chance range estimation hot-blast outlet and in
The resistance to material operation conditions of portion's partition wall；
Step 5: confirmation fault type and position, in the case where situation is normal, structure and shape inside hot-blast stove are all complete clean
, then can determine whether it is that its associated resistance to material in a part has mutation if there is foreign matter；
For different refractory brick because physical and chemical index is different, adjacent regions are easy to appear mutation position, as internal combustion stove partition wall goes out
The position that existing " bulge ", refractory brick protrude usually appears in the delivery position of two kinds of refractory brick brick kinds；Influence resistance to material hair
Another factor of raw mutation is exactly the alternating variation of running environment, combustion chamber and accumulation of heat such as internal combustion stove partition wall both sides
Room in one cycle always in burn furnace low pressure, high temperature and air-supply high pressure, compared with low-temperature condition alternate cycles, finally influence repeatedly
The stability of partition wall and generation " banana " effect；
Failure exception position can be calculated by the size of absolute altitude and the used refractory brick of corresponding site on design drawing, lookup
Come.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388298.1A CN108956459B (en) | 2017-05-27 | 2017-05-27 | Hot-state detection method for refractory material in hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388298.1A CN108956459B (en) | 2017-05-27 | 2017-05-27 | Hot-state detection method for refractory material in hot blast stove |
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| Publication Number | Publication Date |
|---|---|
| CN108956459A true CN108956459A (en) | 2018-12-07 |
| CN108956459B CN108956459B (en) | 2021-02-02 |
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| CN201710388298.1A Active CN108956459B (en) | 2017-05-27 | 2017-05-27 | Hot-state detection method for refractory material in hot blast stove |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710135A (en) * | 2020-05-26 | 2020-09-25 | 广东韶钢松山股份有限公司 | Early warning and control process for brick collapse of blast furnace hot blast stove fire well wall |
| CN111996325A (en) * | 2020-07-13 | 2020-11-27 | 广东韶钢松山股份有限公司 | Method and tool for quickly cleaning burner of hot blast stove |
-
2017
- 2017-05-27 CN CN201710388298.1A patent/CN108956459B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710135A (en) * | 2020-05-26 | 2020-09-25 | 广东韶钢松山股份有限公司 | Early warning and control process for brick collapse of blast furnace hot blast stove fire well wall |
| CN111996325A (en) * | 2020-07-13 | 2020-11-27 | 广东韶钢松山股份有限公司 | Method and tool for quickly cleaning burner of hot blast stove |
| CN111996325B (en) * | 2020-07-13 | 2022-04-12 | 广东韶钢松山股份有限公司 | Method and tool for quickly cleaning burner of hot blast stove |
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