CN107254561B - A method of realizing that blast furnace gun is blocked up automatically using PLC - Google Patents
A method of realizing that blast furnace gun is blocked up automatically using PLC Download PDFInfo
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- CN107254561B CN107254561B CN201710405041.2A CN201710405041A CN107254561B CN 107254561 B CN107254561 B CN 107254561B CN 201710405041 A CN201710405041 A CN 201710405041A CN 107254561 B CN107254561 B CN 107254561B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- 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
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- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
The present invention relates to a kind of methods blocked up automatically using PLC realization blast furnace gun, belong to blast furnace ironmaking equipment technical field.Technical solution is：Blast furnace is equipped with equipment operation platform, PLC control system, hydraulic power system and clay gun, increases setting " blocking up automatically " selection mode on equipment operation platform, and application button carries out the switching selection between different modes；In PLC control system, control to clay gun is realized, by the logic control relation in typing PLC control system, using the feedback information of pressure monitoring instrument, the clay gun for automatically controlling stokehold completes blast furnace and blocks up operation.Beneficial effects of the present invention：Before more severe State of Blast Furnace in environment, quantified controlling is realized to beating mud amount, beating mud pressure, mud drum form and iron mouth pore passage state etc. during blocking up using the monitoring signals in stokehold and hydraulic device, and then signal interference problem when remote controller is blocked up and the excessive dependence to artificial experience are eliminated, stablize iron mouth quality.
Description
Technical field
The present invention relates to a kind of methods blocked up automatically using PLC realization blast furnace gun, belong to blast furnace ironmaking equipment and technology
Field.
Background technique
Blast fumance is an extremely complex process, and operation and stokehold tapping work in coordination and be just able to achieve the working of a furnace in furnace
Direct motion steady in a long-term.With blast furnace enlargement, the requirement of stokehold tapping operation is higher and higher.Operation of blocking up is that stokehold tapping is most heavy
The operation wanted, the quality for operation of blocking up directly influence the working condition of iron mouth.In one timing of stemming quality, pass through assurance
It blocks up opportunity, optimizes and the operation of blocking up such as beat mud pressure, beat the mud time and beat mud amount, mud drum shape can be accurately controlled, improve iron
Oral pore road consistency improves iron mouth qualification rate.The manual operation remote control control clay gun generallyd use at present is come the behaviour that completes to block up
Make, it is more serious to remote control control signal interference since the preceding operating area electrical installation of State of Blast Furnace is more.Therefore, in reality
In production, when the work remote controller of post, it will appear often because signal is disturbed the case where causing clay gun movement to be stagnated, Qing Zheying
Quality of blocking up is rung, big gun head and the fusing of big gun neck are caused blast furnace is stifled not shut up by severe one high temperature slag iron, and cause blast furnace checking, leak informaton,
The serious accident for even running iron, has seriously affected the normal production of stokehold operation safety and blast furnace.Even if normally being produced in signal
In the case where, for operator when control clay gun is blocked up, psychological pressure is also larger.Molten iron directly washes away big gun head when due to blocking up,
So turning big gun, hitting big gun, return big gun, pressure big gun, play the several movements of mud and must accomplish without any letup, quickly iron mouth is blocked, each movement mistake
Difference is within 1 second, once operation error, irony big gun head is burned quickly and can not block up, and easily causes accident of blocking up.Meanwhile
Control due to beating mud amount during blocking up depends on artificial experience, so Fourth Shift personnel are in operation, because of individual difference
The standardization control block opportunity with the difference of operating habit, iron mouth difficult to realize, play the control of mud amount, iron mouth ftercompction etc., is caused
The fluctuation of iron mouth depth and quality, influences row's iron deslagging effect of blast furnace, and then the stable smooth operation of conditions of blast furnace.
Summary of the invention
It is an object of the present invention to provide a kind of methods blocked up automatically using PLC realization blast furnace gun.In more severe height
In the environment of furnace stokehold, using the monitoring signals in stokehold and hydraulic device to beating mud amount, beat mud pressure, mud drum during blocking up
Form and iron mouth pore passage state etc. realize quantified controlling, and then eliminate signal interference problem when remote controller is blocked up with
And the excessive dependence to artificial experience, iron mouth quality is improved, the above problem existing for background technique is solved.
The technical scheme is that：
A method of using PLC realize blast furnace gun block up automatically, blast furnace be equipped with equipment operation platform, PLC control system,
Hydraulic power system and clay gun, increase setting " blocking up automatically " selection mode on equipment operation platform, and application button carries out different
Switching selection between mode；In PLC control system, realizes the control to clay gun, pass through patrolling in typing PLC control system
Volume control planning, using the feedback information of pressure monitoring instrument, the clay gun for automatically controlling stokehold completes blast furnace and blocks up operation.
It comprises the following steps：
Block up operation when, " blocked up automatically " button by starting, starting is blocked up program automatically, and execution was blocked up automatically
Journey；
After clay gun advances 8 seconds to working position first, PLC control system starts monitoring and turns big gun pressure change, turns big gun pressure>
110bar or advance time cumulation reach 13 seconds, meet conditions above, and PLC determines that clay gun has struck taphole mud sleeve face；This
When clay gun retract 1.5 seconds, readvance 2 seconds, carry out it is secondary hits big gun compaction actions, to guarantee sealing effect；It is secondary hit big gun after, if turn
Big gun pressure is still below 170bar, and PLC control system determines that clay gun sealing effect of blocking up is not up to standard, then clay gun retracts 25 seconds to standby
Position terminates to block up process automatically and checks reason；If turning big gun pressure>170bar, PLC determine that clay gun sealing effect of blocking up reaches
It is required that then carrying out beating mud process in next step；
PLC control system controls clay gun, beats mud first 10 seconds to guarantee safety of blocking up；If it is for 3 seconds super to beat mud pressure
Cross 270bar, and hydraulic power system beats that mud oil circuit flow count value is for 3 seconds not to be increased, PLC control system determines mud
Spray gun plugging piston does not advance, beats mud and stops PLC control system control clay gun, execution turns big gun ftercompction until pressure is greater than
270bar, the process of blocking up terminates automatically；If the mud pressure of beating of hydraulic power system does not trigger, pressure for 3 seconds is greater than
270bar beats mud oil circuit flow count value not increased condition for 3 seconds, then continues to beat mud and added up oil to beat mud oil circuit
Amount reaches setting value, realizes that accurate control iron mouth beats the purpose of mud amount with this；Then, PLC control system controls clay gun, and execution turns big gun
Ftercompction is until pressure is greater than 270bar, and the process of blocking up terminates automatically.
The beneficial effects of the invention are as follows：Implement method of the invention block up operation when without using remote controler, thus put
It has taken off the signal interference problem being easy to appear when remote controler is blocked up, while further stable iron mouth quality and can also guarantee peace of blocking up
Full operation is suitable for domestic and international various blast furnaces.Take full advantage of each of the reliable and stable PLC control system in stokehold and hydraulic system
A measuring instrument, by process transfer big gun of blocking up automatically to clay gun to working position, rollback, advance, hit big gun, compacting, beat mud, ftercompction
Etc. links real time data inspecting and quantization, can be realized the control to block up effect and iron mouth quality.Blocking up in the present invention
It is relied on when method finishes blast furnace front hole blocking operation and manually estimates, sound, number number etc. is listened to judge iron mouth seal degree, beat mud amount
And the operation of the extensive style such as iron mouth quality, for stokehold safety work, stablize iron mouth quality and standardized work with important
Realistic meaning.
Detailed description of the invention
Fig. 1 is the embodiment of the present invention in equipment operation platform increase " blocking up automatically " selection schematic diagram；
It is marked in figure as follows：1, equipment operation platform 2, operation button 3, block up select toggle 4, transformation before block up selection
It blocks up after toggle 5, transformation and selects toggle；
Fig. 2 is logic control schematic diagram of the present invention；
Fig. 3 is that the present invention blocks up process CIMS figure with prior art.
Specific embodiment
Below in conjunction with attached drawing, by embodiment, the present invention will be further described.
A method of using PLC realize blast furnace gun block up automatically, blast furnace be equipped with equipment operation platform, PLC control system,
Hydraulic power system and clay gun, increase setting " blocking up automatically " selection mode on equipment operation platform, and application button carries out different
Switching selection between mode；In PLC control system, realizes the control to clay gun, pass through patrolling in typing PLC control system
Volume control planning, using the feedback information of pressure monitoring instrument, the clay gun for automatically controlling stokehold completes blast furnace and blocks up operation.
It comprises the following steps：
Block up operation when, " blocked up automatically " button by starting, starting is blocked up program automatically, and execution was blocked up automatically
Journey；
After clay gun advances 8 seconds to working position first, PLC control system starts monitoring and turns big gun pressure change, turns big gun pressure>
110bar or advance time cumulation reach 13 seconds, meet conditions above, and PLC determines that clay gun has struck taphole mud sleeve face；This
When clay gun retract 1.5 seconds, readvance 2 seconds, carry out it is secondary hits big gun compaction actions, to guarantee sealing effect；It is secondary hit big gun after, if turn
Big gun pressure is still below 170bar, and PLC control system determines that clay gun sealing effect of blocking up is not up to standard, then clay gun retracts 25 seconds to standby
Position terminates to block up process automatically and checks reason；If turning big gun pressure>170bar, PLC determine that clay gun sealing effect of blocking up reaches
It is required that then carrying out beating mud process in next step；
PLC control system controls clay gun, beats mud first 10 seconds to guarantee safety of blocking up；If it is for 3 seconds super to beat mud pressure
Cross 270bar, and hydraulic power system beats that mud oil circuit flow count value is for 3 seconds not to be increased, PLC control system determines mud
Spray gun plugging piston does not advance, beats mud and stops PLC control system control clay gun, execution turns big gun ftercompction until pressure>270bar,
The automatic process of blocking up terminates；If the mud pressure of beating of hydraulic power system does not trigger, for 3 seconds>270bar beats mud oil circuit
Flow count value not increased condition for 3 seconds then continues dozen mud to the oil mass that added up for beating mud oil circuit and reaches setting value, with this reality
Now accurately control the purpose that iron mouth beats mud amount；Realize that accurate control iron mouth beats the purpose of mud amount with this.Then, PLC control system
Clay gun is controlled, execution turns big gun ftercompction until pressure>270bar, the process of blocking up terminates automatically.
The present embodiment operating procedure is as follows：
Using automatically block up operation when, stokehold post personnel first have to determine mud set face it is complete, deep-controlled range 30-70
㎜；
Automatically it before blocking up, with equipment operation platform examination big gun, pushes up mud and ensures that clay gun retracts standby position；
Before tapping outlet, side and it is compacted now using the stifled full iron mouth of sandy soil.Before blocking up, with compressed air iron mouth at the moment residual
After slag iron and sandy soil are blown clean, operation of blocking up can be carried out；
After equipment operation platform personnel are connected to group long instruction, the automatic button of blocking up of starting starts to carry out operation of blocking up automatically；
In order to ensure blocking up, operation safety is stablized, after system starts to execute and blocks up program automatically, if actual conditions are not
Meeting and blocks up requirement automatically, equipment operation platform controllers according to circumstances can have the right to terminate auto-programming and be changed to manual operation,
Illustrate the starting point and reason of the operation after successfully blocking up again；
When blocking up automatically, equipment operation platform personnel will pay close attention to big gun situation, do not seal if there is iron mouth and just beat mud
The case where, clay gun control selections button will be switched to " station control " in time and retract clay gun by station personnel；It finds out
Reason and after taking measures, carries out operation of blocking up again；
If it is normal that program of blocking up automatically seals stifled iron notch, occur the few situation of inputiing mud volume, equipment operation platform personnel when beating mud
Clay gun control selections button is switched into " station control " in time, judge whether to station and mend mud manually.
Claims (1)
1. a kind of method for realizing that blast furnace gun is blocked up automatically using PLC, it is characterised in that：Blast furnace is equipped with equipment operation platform, PLC
Control system, hydraulic power system and clay gun increase setting " blocking up automatically " selection mode, application button on equipment operation platform
Carry out the switching selection between different modes；In PLC control system, the control to clay gun is realized, system is controlled by typing PLC
Logic control relation in system, using the feedback information of pressure monitoring instrument, the clay gun for automatically controlling stokehold completes blast furnace and blocks up
Operation comprises the following steps：
Block up operation when, " blocked up automatically " button by starting, starting is blocked up program automatically, executes process of blocking up automatically；
After clay gun advances 8 seconds to working position first, PLC control system starts monitoring and turns big gun pressure change, turns big gun pressure>110bar
Or advance time cumulation reaches 13 seconds, meets conditions above, PLC determines that clay gun has struck taphole mud sleeve face；Clay gun at this time
It retracts 1.5 seconds, readvances 2 seconds, progress is secondary to hit big gun compaction actions, to guarantee sealing effect；It is secondary hit big gun after, if turning big gun pressure
It is still below 170bar, PLC control system judgement clay gun is blocked up, and sealing effect is not up to standard, then clay gun retracts 25 seconds to standby position, ties
Shu Zidong, which blocks up, process and checks reason；If turning big gun pressure>170bar, PLC determine that clay gun sealing effect of blocking up reaches requirement,
It then carries out beating mud process in next step；
PLC control system controls clay gun, beats mud first 10 seconds to guarantee safety of blocking up；If beaten, mud pressure is for 3 seconds to be more than
270bar, and hydraulic power system beats that mud oil circuit flow count value is for 3 seconds not to be increased, and PLC control system determines clay gun
It beats mud piston not advance, beats mud and stop PLC control system control clay gun, execution turns big gun ftercompction until pressure>270bar, from
The dynamic process of blocking up terminates；If the mud pressure of beating of hydraulic power system does not trigger, for 3 seconds>270bar beats mud oil circuit stream
Meter numerical value not increased condition for 3 seconds then continues dozen mud to the oil mass that added up for beating mud oil circuit and reaches setting value；Then, PLC
Control system controls clay gun, and execution turns big gun ftercompction until pressure>270bar, the process of blocking up terminates automatically.
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| CN201710405041.2A CN107254561B (en) | 2017-06-01 | 2017-06-01 | A method of realizing that blast furnace gun is blocked up automatically using PLC |
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| CN201710405041.2A CN107254561B (en) | 2017-06-01 | 2017-06-01 | A method of realizing that blast furnace gun is blocked up automatically using PLC |
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| CN107254561A CN107254561A (en) | 2017-10-17 |
| CN107254561B true CN107254561B (en) | 2018-11-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113832276B (en) * | 2020-06-23 | 2022-12-16 | 宝山钢铁股份有限公司 | Automatic control method for intelligent iron blocking port of blast furnace tapping |
| CN113088595A (en) * | 2021-04-08 | 2021-07-09 | 宝武集团鄂城钢铁有限公司 | Control method for automatic plugging operation of blast furnace clay gun machine |
| CN115074473A (en) * | 2022-06-17 | 2022-09-20 | 马鞍山钢铁股份有限公司 | Remote intelligent maintenance system and method for mud beating mechanism |
| CN115198046B (en) * | 2022-08-12 | 2023-08-22 | 马鞍山钢铁股份有限公司 | Automatic start-stop method for blast furnace stokehole water slag flushing equipment |
| CN116042940B (en) * | 2023-01-03 | 2024-04-16 | 中冶南方工程技术有限公司 | Method for automatically adding stemming in front of blast furnace |
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| CN201087195Y (en) * | 2007-08-17 | 2008-07-16 | 攀枝花新钢钒股份有限公司 | Hydraulic clay gun control system in front of blast furnace |
| CN202370919U (en) * | 2011-12-20 | 2012-08-08 | 宜昌市燕狮科技开发有限责任公司 | Automatic blast furnace hydraulic control system |
| KR101561840B1 (en) * | 2014-08-27 | 2015-10-20 | 주식회사 포스코 | Apparatus for preventing mud-gun from being pushed back |
| CN105112588B (en) * | 2015-09-26 | 2017-05-17 | 柳州钢铁股份有限公司 | Display device for mud charging quantity of blast furnace mud gun |
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