CN107475469B - A method of preventing furnace top material tank for blast furnace heavy burder - Google Patents
A method of preventing furnace top material tank for blast furnace heavy burder Download PDFInfo
- Publication number
- CN107475469B CN107475469B CN201710556990.0A CN201710556990A CN107475469B CN 107475469 B CN107475469 B CN 107475469B CN 201710556990 A CN201710556990 A CN 201710556990A CN 107475469 B CN107475469 B CN 107475469B
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- cpu
- feed bin
- batch
- furnace
- furnace roof
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Classifications
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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
- C21B5/006—Automatically controlling the process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Burglar Alarm Systems (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of methods for preventing furnace top material tank for blast furnace heavy burder, it includes the following steps: to increase in feed bin program when each feed bin batch can closes the limit tight, vibrating screen is returned without starting, detects a batch can at regular intervals and value is claimed to be compared with previous title value；When increase program is that batch can charges in furnace roof CPU, batch can of detection claims to be worth at regular intervals fluctuates within the positive and negative values of setting, issues and alarms；Feed bin CPU tri- is examined and is issued signal to furnace roof CPU after signal timing is completed, then returns to feed bin CPU by furnace roof CPU, and the signal triggering timing device returned by furnace roof CPU, and when timer stopped main belt by 20 seconds, issues alarm；The full signal of the empty material of two material is compared, increases detection material sky and expects full signal protection.Its purpose is to provide a kind of method for preventing furnace top material tank for blast furnace heavy burder efficiently, safe, solve the problems, such as to cause blast furnace to be forced blowing-out due to furnace roof batch can heavy burder.
Description
Technical field
The invention belongs to smelt iron field of engineering technology, in the normal productive process applied to blast furnace roof charging, effectively
Prevent the generation of furnace top material tank for blast furnace heavy burder accident.
Background technique
For large blast furnace, usual furnace roof batch can volume is smaller.When furnace roof batch can institute's furnace burdening is greater than batch can volume
When, cause upper sealing valve that can not close tight, furnace charge could be put into blast furnace by being forced blowing-out, and this phenomenon is exactly heavy burder.Currently, three
Kind of situation will appear furnace roof heavy burder phenomenon: firstly, joint feed bin batch can is more, once any one lower sluice gate occur slipping material (
Shoudu Iron and Steel Co capital Tang such case happens occasionally), it is likely to cause Mi Guan on furnace roof not above to be forced blowing-out.Secondly as furnace roof
CPU with feed bin be it is separated, once communication go wrong or CPU redundancy switch when, if furnace roof does not receive feed bin, CPU is sent
Three inspection signals, will also result in furnace roof heavy burder and be forced blowing-out.Third, furnace top material tank for blast furnace detection material is empty to expect that full signal occurs
Failure also results in the generation of heavy burder accident although the empty practical batch can of display material is reloaded into furnace charge in the case where having material.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sides for preventing furnace top material tank for blast furnace heavy burder efficiently, safe
Method solves the problems, such as to cause blast furnace to be forced blowing-out due to furnace roof batch can heavy burder.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention, includes the following steps:
Increase in feed bin program when each feed bin batch can closes the limit tight, vibrating screen is returned without starting, every one section
Time detects a batch can and value is claimed to be compared with previous title value, if the amplitude of decline is more than setting value, issues
Sound-light alarm；
When increase program is that batch can is charging in furnace roof CPU, a furnace roof batch can is detected at regular intervals and claims to be worth
It is fluctuated within the positive and negative values of setting, time duration 60 seconds or more, illustrates that furnace roof is possible to not receive feed bin CPU is sent three
Signal is examined, sound-light alarm is issued；
Feed bin CPU tri- is examined and is issued signal to furnace roof CPU after signal timing is completed, then returns to feed bin CPU by furnace roof CPU,
And by the timer of the furnace roof CPU signal triggering 20 seconds returned, reset within the timer 2-3 seconds under normal circumstances, if feed bin
CPU and furnace roof cpu data transmission abnormality, the timer of feed bin CPU will timing by 20 seconds stopped main belt, and issue acousto-optic report
It is alert；
The full signal of the empty material of two material is combined and is compared, if flip-flop transition differs by more than setting value, acousto-optic
Warning note production operation personnel expect full signal protection note that increasing detection material sky, are exactly by cloth feed ring number multiplied by individual pen cloth
Just it can effectively prevent material spacing wave from accidentally sending out the generation for causing heavy burder accident with material issuance spacing wave after time.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention works as each feed bin material wherein increasing in feed bin program
When tank closes the limit tight, vibrating screen is returned without starting, value is claimed to be compared with previous title value every the batch can of detection in 20 seconds
Compared with, if decline amplitude be more than 0.3 ton, issue sound-light alarm.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention, wherein increase in furnace roof CPU program be batch can just
In charging, claim to be worth every the furnace roof batch can of detection in 5 seconds and be fluctuated within the positive and negative values of setting, when charging is ties mine, just
Negative value is set as positive and negative 0.7 ton, and when charging is coke, positive and negative values are set as positive and negative 0.3 ton, time duration 60 seconds or more, say
Open oven top is possible to not receive the three inspection signals that feed bin CPU is sent, issues sound-light alarm.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention, wherein by the empty material of two material expire signals combine into
Row compares, if flip-flop transition differs by more than 8 seconds, sound-light alarm prompt production operation personnel pay attention to.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention has prevented feed bin batch can and slips material to make by increasing program
At the possibility of heavy burder accident；By programmed decision go out the mutual Phase Receiver three of two CPU examine signal it is normal whether to alarm inform and grasp
It takes measures to handle as personnel；It alarms whether expiring signal normally by programmed decision material sky material and informs operator, increase simultaneously
The protection of material spacing wave effectively prevent material spacing wave accidentally hair cause the generation of heavy burder accident.
The present invention will be further explained below with reference to the attached drawings.
Detailed description of the invention
Fig. 1 is to slip material alarming logic figure in the present invention；
Fig. 2 is that the furnace roof CPU tri- in the present invention examines signal detection logic figure；
Fig. 3 is that the feed bin and furnace roof CPU tri- in the present invention examine the normal detection logic chart of signal transmission；
Fig. 4 is the furnace roof material spacing wave protective program logic chart in the present invention.
Specific embodiment
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention, includes the following steps:
Increase in feed bin program when each feed bin batch can closes the limit tight, vibrating screen is returned without starting, every one section
Time detects a batch can and value is claimed to be compared with previous title value, if the amplitude of decline is more than setting value, issues
Sound-light alarm；
When increase program is that batch can is charging in furnace roof CPU, a furnace roof batch can is detected at regular intervals and claims to be worth
It is fluctuated within the positive and negative values of setting, time duration 60 seconds or more, illustrates that furnace roof is possible to not receive feed bin CPU is sent three
Signal is examined, sound-light alarm is issued；
Feed bin CPU tri- is examined and is issued signal to furnace roof CPU after signal timing is completed, then returns to feed bin CPU by furnace roof CPU,
And by the timer of the furnace roof CPU signal triggering 20 seconds returned, reset within the timer 2-3 seconds under normal circumstances, if feed bin
CPU and furnace roof cpu data transmission abnormality, the timer of feed bin CPU will timing by 20 seconds stopped main belt, and issue acousto-optic report
It is alert；
The full signal of the empty material of two material is combined and is compared, if flip-flop transition differs by more than setting value, acousto-optic
Warning note production operation personnel expect full signal protection note that increasing detection material sky, are exactly by cloth feed ring number multiplied by individual pen cloth
Just it can effectively prevent material spacing wave from accidentally sending out the generation for causing heavy burder accident with material issuance spacing wave after time.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention works as each feed bin material wherein increasing in feed bin program
When tank closes the limit tight, vibrating screen is returned without starting, value is claimed to be compared with previous title value every the batch can of detection in 20 seconds
Compared with, if decline amplitude be more than 0.3 ton, issue sound-light alarm.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention, wherein increase in furnace roof CPU program be batch can just
In charging, claim to be worth every the furnace roof batch can of detection in 5 seconds and be fluctuated within the positive and negative values of setting, when charging is ties mine, just
Negative value is set as positive and negative 0.7 ton, and when charging is coke, positive and negative values are set as positive and negative 0.3 ton, time duration 60 seconds or more, say
Open oven top is possible to not receive the three inspection signals that feed bin CPU is sent, issues sound-light alarm.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention, wherein by the empty material of two material expire signals combine into
Row compares, if flip-flop transition differs by more than 8 seconds, sound-light alarm prompt production operation personnel pay attention to.
A kind of method for preventing furnace top material tank for blast furnace heavy burder of the present invention has prevented feed bin batch can and slips material to make by increasing program
At the possibility of heavy burder accident；By programmed decision go out the mutual Phase Receiver three of two CPU examine signal it is normal whether to alarm inform and grasp
It takes measures to handle as personnel；It alarms whether expiring signal normally by programmed decision material sky material and informs operator, increase simultaneously
The protection of material spacing wave effectively prevent material spacing wave accidentally hair cause the generation of heavy burder accident.
The present invention is described in further detail below in conjunction with the accompanying drawings.
The case where material is slipped for feed bin, in feed bin program increase when each feed bin batch can close tight the limit, vibrating screen without
When starting returns, the batch can of detection in every 20 seconds claims value to be compared with previous title value, if the amplitude of decline is more than 0.3
Ton then issues sound-light alarm, and operator is reminded to take measures to handle.Logic chart is as shown in Figure 1.
The case where for cpu signal transmission abnormality, when increase program is that batch can is charging in furnace roof CPU, every five seconds inspection
Surveying a furnace roof batch can claims value to fluctuate within positive and negative (0.7 ton of mine of knot, 0.3 ton of coke), time duration 60 seconds or more, illustrates furnace
Top is possible to not receive the three inspection signals that feed bin CPU is sent, issues sound-light alarm, prevents furnace roof heavy burder.Logic chart such as Fig. 2 institute
Show.
Increase following procedure: feed bin CPU tri- is examined and is issued signal to furnace roof CPU after signal timing is completed, then by furnace roof CPU
Back to feed bin CPU, and the signal returned by furnace roof CPU triggers 20 seconds timers, under normal circumstances timer 2-3 seconds
It resets.If feed bin CPU and furnace roof cpu data transmission abnormality, the timer of feed bin CPU will timing by 20 seconds stopped main skin
Band, and issue sound-light alarm." heavy burder alarm release " key is arranged in key frame, and click can release alarm.Logic chart such as Fig. 3 institute
Show.
The full signal of the empty material of two material is combined and is compared, such as by the case where accidentally sending out for furnace roof batch can material spacing wave
Fruit flip-flop transition differs by more than 8 seconds, then sound-light alarm prompt production operation personnel expect that full signal is available wherein note that two material are empty
One of, another does spare, can switch at any time in program.In addition, increasing, detection material is empty to expect full signal protection, is exactly by cloth feed ring
Number multiplied by after individual pen cloth time (8.4 seconds) just can with material issuance spacing wave, effectively prevent material spacing wave accidentally hair cause heavy burder thing
Therefore generation.Logic chart is as shown in Figure 4.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (3)
1. a kind of method for preventing furnace top material tank for blast furnace heavy burder, which comprises the steps of:
Increase in feed bin program when each feed bin batch can closes the limit tight, vibrating screen is returned without starting, at regular intervals
Detecting a batch can claims value to be compared with previous title value, if the amplitude of decline is more than setting value, issues acousto-optic
Alarm；
When increase program is that batch can is charging in furnace roof CPU, a furnace roof batch can is detected at regular intervals, value is claimed to set
It is fluctuated within fixed positive and negative values, time duration 60 seconds or more, illustrates that furnace roof is possible to not receive the three inspection letters that feed bin CPU is sent
Number, issue sound-light alarm；
Feed bin CPU tri- is examined and is issued signal to furnace roof CPU after signal timing is completed, then by furnace roof CPU back to feed bin CPU, and by
The signal that furnace roof CPU is returned triggers 20 seconds timers, resets within the timer 2-3 second under normal circumstances, if feed bin CPU with
Furnace roof cpu data transmission abnormality, the timer of feed bin CPU will timing by 20 seconds stopped main belt, and issue sound-light alarm；
The full signal of the empty material of two material is combined and is compared, if two material empty flip-flop transition for expecting completely signal differs by more than
8 seconds, then sound-light alarm prompt production operation personnel expect full signal protection note that increasing detection material sky, exactly multiply cloth feed ring number
Just can effectively prevent material spacing wave from accidentally sending out the generation for causing heavy burder accident with material issuance spacing wave after the individual pen cloth time.
2. the method according to claim 1 for preventing furnace top material tank for blast furnace heavy burder, it is characterised in that: increase in feed bin program
The each feed bin batch can of sovolin close tight the limit, vibrating screen without starting return when, every the batch can of detection in 20 seconds claim value with it is previous
Secondary title value is compared, if the amplitude of decline is more than 0.3 ton, issues sound-light alarm.
3. the method according to claim 2 for preventing furnace top material tank for blast furnace heavy burder, it is characterised in that: increase in furnace roof CPU
When program being added to charge for batch can, claims to be worth every the furnace roof batch can of detection in 5 seconds and be fluctuated within the positive and negative values of setting, work as dress
When material is ties mine, positive and negative values are set as positive and negative 0.7 ton, and when charging is coke, positive and negative values are set as positive and negative 0.3 ton, and the time prolongs
It is 60 seconds or more continuous, illustrate that furnace roof is possible to not receive the three inspection signals that feed bin CPU is sent, issues sound-light alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556990.0A CN107475469B (en) | 2017-07-10 | 2017-07-10 | A method of preventing furnace top material tank for blast furnace heavy burder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556990.0A CN107475469B (en) | 2017-07-10 | 2017-07-10 | A method of preventing furnace top material tank for blast furnace heavy burder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107475469A CN107475469A (en) | 2017-12-15 |
| CN107475469B true CN107475469B (en) | 2019-06-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101985669B (en) * | 2010-11-18 | 2012-05-23 | 中冶南方工程技术有限公司 | Method for automatically correcting differential-pressure compensation factors of weighing of top charging bucket |
| CN203096092U (en) * | 2013-01-21 | 2013-07-31 | 尚领军 | Blast furnace belt feeding control system |
| CN104296851B (en) * | 2014-08-28 | 2016-08-24 | 莱芜钢铁集团电子有限公司 | Charging of shaft furnace control method and control device |
| CN205974569U (en) * | 2016-08-04 | 2017-02-22 | 武汉陆峰科技有限责任公司 | Pressure compensation weighing system based on blast furnace top control process |
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