CN104165737B - A kind of sintering machine leaks out inspection method - Google Patents
A kind of sintering machine leaks out inspection method Download PDFInfo
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- CN104165737B CN104165737B CN201410369654.1A CN201410369654A CN104165737B CN 104165737 B CN104165737 B CN 104165737B CN 201410369654 A CN201410369654 A CN 201410369654A CN 104165737 B CN104165737 B CN 104165737B
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- 238000005245 sintering Methods 0.000 title claims abstract description 53
- 238000007689 inspection Methods 0.000 title claims abstract description 12
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 210000003491 Skin Anatomy 0.000 claims description 16
- 238000003331 infrared imaging Methods 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 7
- 230000004059 degradation Effects 0.000 claims description 7
- 238000006731 degradation reaction Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000003247 decreasing Effects 0.000 claims description 3
- 238000007557 optical granulometry Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004445 quantitative analysis Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004451 qualitative analysis Methods 0.000 description 3
- 210000003733 Optic Disk Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Abstract
The invention discloses a kind of sintering machine to leak out inspection method, by measurement and the analysis of sintering machine surface temperature potential field, being formed respectively leaks out for sintering machine is a little accurately positioned and comprehensive analysis, the suitability is wide, practical, simple to operate, the most accurate, flexible and efficient, air leak rate of air curtain is greatly reduced, improves SINTERING PRODUCTION efficiency and product quality.
Description
Technical field
The invention belongs to the technical field of producing of blast furnace ironmaking main furnace charge sintering deposit, particularly relate to one
Sintering machine leaks out inspection method.
Background technology
Generally there is the problem that process energy consumption is high in sintering machine at present, and main cause is that air leakage rate of sintering machine does not obtain
To effectively controlling, generally about 60%,
During realizing the present invention, inventor finds that prior art at least there is problems in that and is leaking out
In rate governance process, although the total air leak rate of air curtain of sintering machine can pass through discharge method, oxygen-containing mensuration measurement, but at tool
Where body leak out, leak how many and does not but have effective detection means and discriminatory analysis in the judgement of degradation trend
Method, also using the practice listened of original ear soon in site examining and repairing, exists not understand and can not hear clearly
Problem, is totally in the state shot at random, and seriously constrains effective improvement that sintering machine leaks out.
Summary of the invention
The technical problem to be solved be to provide a kind of realize that each main Types of sintering machine leaks out a little fast
Inspection method that speed is accurately positioned, the sintering machine of the qualitative and quantitative analysis of inleakage leaks out.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of sintering machine leaks out inspection
Checking method, comprises the following steps:
1) with Infrared imaging cameras, sintering machine made large area video scanning, and shoot the record of record temperature potential field
Picture and photo are for further analysis and recording；
2) video recording and photo analysis according to the 1st the temperature potential field recorded judge, it is judged that rule includes:
A, every in equipment contour line, less than the skin dark stain of shooting picture mean temperature 10 DEG C, it is simply that doubtful leakage
Wind point；
The skin dark stain that in b, picture, every thermograde is surrounded more than 200 DEG C/m is exactly doubtful leaking out a little；
C, the same spot temperature value of every same type equipment are exactly doubtful leakage less than the skin dark stain of meansigma methods 10 DEG C
Wind point；
D, equipment surface temperature and thermograde value and historical data being compared, every decreasing value is more than
10 DEG C is exactly doubtful leaking out a little；
3), after finding doubtful leaking out a little, making shooting with video-corder of higher resolution closer to distance, utilizing the 2nd rule
Remake and once confirm to judge work, determine and leak out a little；
4) computational methods of inleakage size are:Wherein QnIt is
Leak out detection flow a little；Wherein G0The thermograde judgment threshold related in b rule, i.e. 200 DEG C/m,It it is the thermograde average temperature gradient more than the skin dark stain envelope of threshold value of leaking out；WhereinIt it is c rule
The same position mean temperature threshold value that relates to,It is leak out some mean temperature of temperature skin dark stain, wherein a Q0It it is leakage
Wind point empirical flow radix (experiment reference value) under above-mentioned b rule and the c described threshold condition of rule.
The device temperature potential field data of all acquisitions, the most doubtful regional temperature initial data that leaks out, carry out
Database filing, carrys out comparison as historical data when air leak test next time, and sintering machine leaks out district
The judgement of territory degradation trend.
Leak out prompting and the Calculation of Air Leakage obtained, carries out on-the-spot confirmation and ratio in maintenance of leaking out each time
Right, then judgment threshold in above-mentioned rule is modified, the most more adapted to this sintering system equipment special
Measurement analytical parameters under property and working condition.
Described Infrared imaging cameras is hand-held Infrared imaging cameras.
The position of video scanning made by sintering machine by described Infrared imaging cameras is each common air leakage parts of sintering machine.
The each common air leakage parts of sintering machine is between bellows head-tail, chassis both sides skateboard ramp, flue system.
A technical scheme in technique scheme has the advantage that or beneficial effect, overcomes in existing burning
The blind spot detecting and judging in knot machine air-leakage control, improves the efficiency of air-leakage control, makes up existing method and exists
Shortcomings and deficiencies, the sintering that the suitability is wide, practical, simple to operate, the most accurate, flexible and efficient
Machine air leak test analyzing novel methods, it is achieved each main Types of sintering machine leak out being quickly accurately positioned a little, leak out
The qualitative and quantitative analysis of amount and the judgement of degradation trend, promote specific aim and the effectiveness of air-leakage control, reach
To air leak rate of air curtain being greatly reduced, improving SINTERING PRODUCTION efficiency and product quality, fill up the blank in this field simultaneously.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below will be to embodiment of the present invention
It is described in further detail.
A: measuring principle
By measurement and the analysis of sintering machine surface temperature potential field, being formed respectively leaks out for sintering machine a little accurately determines
Position and the new method of comprehensive analysis.Sintering machine, when normally producing, is driven by main exhauster and forms system negative pressure,
The sintered machine table top bed of material that effectively leaks out becomes high-temperature flue gas and enters flue system, the company of being formed in equipment inside and outside
Continuous stable smooth Temperature Distribution slowly, this continuous print temperature gradient distribution forms temperature potential field, reflects
The inherent character of equipment and running status, any change to device characteristics with local running status, all will be straight
Connecing the suddenly change causing equipment internal and external temperature potential field, the various exception of such as system is leaked out, and cold air is by leakage
Wind point pours in sintering system, the temperature potential field that significantly disturbance is the most slowly varying, is entered by heat exchange
And disturbance with leak out the device external or neighbouring device being a little associated, and material composition, operating procedure when producing
Normal variation on the impact of temperature potential field by be average slowly, and the various leakage of said system is wind-induced
Suddenly change forms significantly difference, and our method is exactly in equipment surface normal temperature potential field background
In, find out those far different abnormal temperature graded, determine the particular location leaked out a little and judge leakage
Wind is with or without exceeding reasonable limit, then the size by the magnitude estimation inleakage of thermograde, and and history
The degradation trend that the contrast judgement of numerical value leaks out.
B: measuring method
The way of less expensive be directly use hand-held Infrared imaging cameras, utilize its feature easy to carry and
Having dynamic color image and describe the function of temperature potential field, common air leakage parts each to sintering machine regards as large area
Frequency scanning, and shoot the record video recording of temperature potential field and photo for further analysis and recording.Sintering machine is each
Common air leakage parts is between bellows head-tail, chassis both sides skateboard ramp, flue system etc..
The concrete method that judges to leak out is,
A, every in equipment contour line, less than the skin dark stain of shooting picture mean temperature 10 DEG C, it is simply that doubtful leakage
Wind point；
The skin dark stain that in b, picture, every thermograde is surrounded more than 200 DEG C/m is exactly doubtful leaking out a little；
C, the same spot temperature value of every same type equipment such as Double-deck cinder discharge valve are less than meansigma methods 10 DEG C
Skin dark stain is exactly doubtful leaking out a little；
D, equipment surface temperature and thermograde value and historical data being compared, every decreasing value is more than
10 DEG C is exactly doubtful leaking out a little；
After finding doubtful leaking out a little, making shooting with video-corder of higher resolution closer to distance as far as possible, utilizing above-mentioned rule
Then remake and once confirm to judge work, to take into account efficiency and the precision that temperature data obtains, determine and leak out a little；
The computational methods of inleakage size are:Wherein QnIt it is leakage
The detection flow of wind point；Wherein G0The thermograde judgment threshold related in b rule, i.e. 200 DEG C/m,
It it is the thermograde average temperature gradient more than the skin dark stain envelope of threshold value of leaking out；WhereinIt is that c rule relates to
And same position mean temperature threshold value,It is leak out some mean temperature of temperature skin dark stain, wherein a Q0It is to leak out
Point empirical flow radix (experiment reference value) under above-mentioned b rule and the c described threshold condition of rule.
The device temperature potential field data of all acquisitions, the most doubtful regional temperature initial data that leaks out, carry out
Database filing, carrys out comparison as historical data when air leak test next time, and sintering machine leaks out district
The judgement of territory degradation trend.
Leak out prompting and the Calculation of Air Leakage obtained, carries out on-the-spot confirmation and ratio in maintenance of leaking out each time
Right, then judgment threshold in above-mentioned rule is modified, the most more adapted to this sintering system equipment special
Measurement analytical parameters under property and working condition.
Implementation result:
Can A: use temperature potential field measurement analyzing novel methods, by infrared direct-view regardless of sintering machine equipment, to sending out
Existing skin dark stain temperature and thermograde transfinite to be in maintenance of leaking out and are tracked confirming, accuracy reaches 90%
Above, in the quantitative analysis of inleakage, accuracy reaches more than 80%.
B: direct economic benefit, by situation overall monitor of leaking out sintering, specific aim is transformed and is overhauled,
Reduce the air leakage rate of sintering machine of 15%, with 300m2Can be obtained by the minimizing of main exhauster electricity as a example by sintering machine
Benefit is: 300kw/h × December × 2 × (1-(1-15%)1/3) × 0.56 yuan ≈ 2,340,000 yuan/year, if being extended to the whole nation
Sintering machine air-leakage control in, benefit will be the most significant.
Overcome the blind spot detecting and judging in existing sintering machine air-leakage control, improve the efficiency of air-leakage control,
Make up the shortcomings and deficiencies that existing method exists, the suitability is wide, practical, simple to operate, the most accurately,
Flexible and efficient sintering machine air leak test analyzing novel methods, it is achieved it is quick that each main Types of sintering machine leaks out a little
Be accurately positioned, the qualitative and quantitative analysis of inleakage and the judgement of degradation trend, promote air-leakage control for
Property and effectiveness, reach to be greatly reduced air leak rate of air curtain, improve SINTERING PRODUCTION efficiency and product quality, fill up simultaneously
The blank in this field.
Above the present invention is exemplarily described, it is clear that the present invention implements not by aforesaid way
Limit, as long as have employed the improvement of the various unsubstantialities that method is conceived and technical scheme is carried out of the present invention,
Or the most improved design by the present invention and technical scheme directly apply to other occasion, all the present invention's
Within protection domain.
Claims (6)
1. a sintering machine leaks out inspection method, it is characterised in that comprise the following steps:
1) with Infrared imaging cameras, sintering machine made large area video scanning, and shoot the record of record temperature potential field
Picture and photo are for further analysis and recording；
2) according to the 1st) video recording of the temperature potential field of step record and photo analysis judge, it is judged that and rule includes:
A, every in equipment contour line, less than the skin dark stain of shooting picture mean temperature 10 DEG C, it is simply that doubtful leakage
Wind point；
The skin dark stain that in b, picture, every thermograde is surrounded more than 200 DEG C/m is exactly doubtful leaking out a little；
C, the same spot temperature value of every same type equipment are exactly doubtful leakage less than the skin dark stain of meansigma methods 10 DEG C
Wind point；
D, equipment surface temperature and thermograde value being compared with historical data respectively, every decreasing value is big
It is exactly doubtful leaking out a little in 10 DEG C；
3), after finding doubtful leaking out a little, making shooting with video-corder of higher resolution closer to distance, utilizing the 2nd) step rule
Then remake and once confirm to judge work, determine and leak out a little；
4) computational methods of inleakage size are:Wherein QnIt is
Leak out detection flow a little；Wherein G0The thermograde judgment threshold related in b rule, i.e. 200 DEG C/m,It it is the thermograde average temperature gradient more than the skin dark stain envelope of threshold value of leaking out；WhereinIt it is c rule
The same position mean temperature threshold value that relates to,It is leak out some mean temperature of temperature skin dark stain, wherein a Q0It it is leakage
Wind point empirical flow radix under above-mentioned b rule and the c described threshold condition of rule i.e. tests reference value.
2. sintering machine as claimed in claim 1 leaks out inspection method, it is characterised in that setting of all acquisitions
Standby temperature potential field data, including the doubtful regional temperature initial data that leaks out, carries out database filing, under being used for
Carry out comparison as historical data during air leak test, and sintering machine leaks out the judgement of region degradation trend.
3. sintering machine as claimed in claim 1 or 2 leaks out inspection method, it is characterised in that the leakage obtained
Wind prompting and Calculation of Air Leakage, carry out on-the-spot confirmation and comparison in maintenance of leaking out each time, then to above-mentioned
In rule, judgment threshold is modified, and is the most more adapted under this sintering machine device characteristics and working condition
Measurement analytical parameters.
4. require such as right that the sintering machine as described in 3 leaks out inspection method, it is characterised in that described infrared one-tenth
As camera is hand-held Infrared imaging cameras.
5. sintering machine as claimed in claim 4 leaks out inspection method, it is characterised in that described infrared imaging
The position of video scanning made by sintering machine by camera is each common air leakage parts of sintering machine.
6. sintering machine as claimed in claim 5 leaks out inspection method, it is characterised in that sintering machine is each common
Air leakage parts is between bellows head-tail, chassis both sides skateboard ramp and flue system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369654.1A CN104165737B (en) | 2014-07-30 | A kind of sintering machine leaks out inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369654.1A CN104165737B (en) | 2014-07-30 | A kind of sintering machine leaks out inspection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165737A CN104165737A (en) | 2014-11-26 |
| CN104165737B true CN104165737B (en) | 2017-01-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435711A (en) * | 2008-12-15 | 2009-05-20 | 武汉钢铁(集团)公司 | Air leakage rate measuring method of sintering machine system |
| CN101895733A (en) * | 2010-07-16 | 2010-11-24 | 中冶北方工程技术有限公司 | Sintering machine infrared imaging temperature measuring system |
| CN101995448A (en) * | 2009-08-26 | 2011-03-30 | 鞍钢股份有限公司 | Method for testing air leakage rate of sintering machine |
| CN102636313A (en) * | 2012-04-11 | 2012-08-15 | 浙江工业大学 | Leakage source detecting device based on infrared thermal imaging processing |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435711A (en) * | 2008-12-15 | 2009-05-20 | 武汉钢铁(集团)公司 | Air leakage rate measuring method of sintering machine system |
| CN101995448A (en) * | 2009-08-26 | 2011-03-30 | 鞍钢股份有限公司 | Method for testing air leakage rate of sintering machine |
| CN101895733A (en) * | 2010-07-16 | 2010-11-24 | 中冶北方工程技术有限公司 | Sintering machine infrared imaging temperature measuring system |
| CN102636313A (en) * | 2012-04-11 | 2012-08-15 | 浙江工业大学 | Leakage source detecting device based on infrared thermal imaging processing |
Non-Patent Citations (2)
| Title |
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