CN103468280A - Coke oven body system commutation circuit control method - Google Patents
Coke oven body system commutation circuit control method Download PDFInfo
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- CN103468280A CN103468280A CN2013104468302A CN201310446830A CN103468280A CN 103468280 A CN103468280 A CN 103468280A CN 2013104468302 A CN2013104468302 A CN 2013104468302A CN 201310446830 A CN201310446830 A CN 201310446830A CN 103468280 A CN103468280 A CN 103468280A
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- 239000000571 coke Substances 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000012546 transfer Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 26
- 230000001105 regulatory effect Effects 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 5
- 238000004939 coking Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention provides a coke oven body system commutation circuit control method. The method comprises the following steps that a hydraulic switch transmits a commutation starting signal to a coke oven body system; the coke oven body system momentarily stops adjustment on a coke oven body circuit according to the commutation starting signal; the hydraulic switch transmits a commutation stopping signal to the coke oven body system; and the coke oven body system restarts the normal adjustment on the coke oven body circuit according to the commutation stopping signal. The coke oven body system commutation circuit control method guarantees system stability in commutation, effectively prevents reduction of stability of the coke oven body circuit adjusted in commutation, effectively improves instability and safety of the coke oven body circuit, and improves adjustment efficiency of the coke oven body circuit thereby effectively improving production efficiency.
Description
Technical field
The present invention relates to chemical technology field, relate in particular to a kind of coke oven main body system commutation loop control method.
Background technology
Coke oven claims again pit kiln, is the crucial thermal apparatus of coal coking.
At present, along with the development of automatic technology, coke oven has been realized automatization control.The coking electrical automation system of prior art mainly comprises: standby coal measures system, coke oven main body system, gas cleaning system, sieve store up the automation systems such as burnt system and water treatment system and form.Wherein, the coke oven main body system is most important automation control system, and whether the work of coke oven main body system is stable and reliable, and whether relation whole coking process flow process and can be safely and steadily run.
In the loop control of existing coke oven main body system, generally by single loop or expert systems, regulated.But no matter be that single loop is regulated or expert control system, all do not consider the transformation problem of the system that commutation process brings.In commutation process still routinely loop carry out regulating and controlling, the corresponding system that causes is regulated more unstable and more unstable, system, after commutation finishes, arrives stable serious overlength of adjusting time.Hydraulic switch is in the situation that the coke oven main pipe pressure is extremely low does not stop in time, the corresponding potential safety hazard that also caused, and the serious combustion efficacy that has influence on coke also simultaneously, and shorten work-ing life of coke oven itself.
In the loop modulation of coke oven main body system, most enterprise is used the single loop control method, divide the adjusting of flue pressure, blast furnace gas engine (Jiao) side pressure regulation and mixed gas machine (Jiao) effluent amount adjustable value by artificial setting coke-oven gas supervisor Flow-rate adjustment, coke oven machine (Jiao) side, Controlling System is made proportion integration differentiation (Proportional-Integral-Derivative, i.e. PlD) setter according to set(ting)value and is regulated.Although also there is at present enterprise to adopt level two to be regulated, in the loop modulation process to coke oven, considered the conditions such as calorific value, humidity, control the stable of coke furnace system regulating loop, the single loop before comparing is regulated its degree of stability and is alleviated to some extent.But these two kinds of methods are not all considered the disturbance that commutation process brings whole system, cause loop in commutation process that significantly adjusting is arranged, even if, after the commutation end, system also needs just can return to steady state for a long time.
Simultaneously, the loop modulation of the coke oven main body system of prior art is not considered the problem that when the coke oven main pipe pressure is low, how reversing machine is controlled yet, and the safe operation that this has affected system greatly, brought comparatively serious potential safety hazard.
Therefore, how effectively to improve coke oven main body system the commutation loop security of controlling and the efficiency that commutates and just become problem demanding prompt solution.
Summary of the invention
Can't effectively improve the problem of coke oven main body system the commutation loop security of controlling and the efficiency that commutates for solving prior art, the invention provides a kind of coke oven main body system commutation loop control method, comprise the following steps:
Hydraulic switch sends and starts commutation signal to the coke oven main body system;
Described coke oven main body system suspends coke oven body loop modulation according to described beginning commutation signal;
Described hydraulic switch sends and stops commutation signal to described coke oven main body system;
Described coke oven main body system comes back to normal coke oven body loop modulation according to the described commutation signal that stops.
The described beginning commutation signal that described hydraulic switch sends to described coke oven main body system and the described time that stops commutation signal equaling or early than the actual moment that starts commutation.
Also comprise: in the situation that the coke oven main pipe pressure is low, described coke oven main body system sends to described hydraulic switch by the low guard signal of coke oven main pipe pressure.
Described hydraulic switch is according to the chain guard signal of sending of described main pipe pressure low signal of receiving.
Also comprise: in the situation that the coke oven main pipe pressure is extremely low, described coke oven main body system sends to described hydraulic switch by the extremely low guard signal of coke oven main pipe pressure.
Described hydraulic switch is according to the chain shutdown of described main pipe pressure utmost point low signal of receiving.
During lower than 500Pa, the coke oven main pipe pressure is judged to be to described coke oven main pipe pressure extremely low when coke oven supervisor's pressure.
Described signal is by the DP bus transfer.
Coke oven main body system commutation loop control method of the present invention can be in commutation process, make system keep stable, effectively contained the generation of the more unsettled situation of more adjusting of the adjusting in focusing furnace body loop in the commutation process, can effectively improve stability and the security of this body loop of coke oven, can also improve the adjusting efficiency of this body loop of coke oven, corresponding can effectively enhancing productivity simultaneously.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schema of the embodiment that Fig. 1 is coke oven main body system commutation loop control method of the present invention.
The control texture schematic diagram that Fig. 2 is coke oven main body system commutation loop control method of the present invention
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
The schema of the embodiment that Fig. 1 is coke oven main body system commutation loop control method of the present invention, the control texture schematic diagram that Fig. 2 is coke oven main body system commutation loop control method of the present invention, as depicted in figs. 1 and 2, the coke oven main body system commutation loop control method of the present embodiment can comprise the following steps:
Particularly, as shown in Figure 2, system control texture and the equipment of the present embodiment mainly comprise: coke-oven gas main pipe pressure point of adjustment 1, coke-oven gas main pipe pressure point of adjustment 1 is also regulating loop important in the coke oven control loop, mixed gas coke side pressure point of adjustment 2, mixed gas pusher side pressure point of adjustment 3, blast furnace gas coke side pressure point of adjustment 4, blast furnace gas engine side pressure regulation point 5, coke side divides flue suction force point of adjustment 6, pusher side divides 7, two hydraulic switchs 8 of flue suction force point of adjustment to be distributed in pusher side and coke side.
When needs are commutated, at first hydraulic switch 8 sends and starts commutation signal to the coke oven main body system, and the coke oven main body system just can know that by the beginning commutation signal received system is about to commutation like this.The coke oven main body system just can start commutation signal according to this and suspend coke oven body loop modulation.Starting coke oven main body system in commutation and the concrete process commutated in system is like this regulated with regard to the furnace body loop of not focusing.This is because be exactly a nonequilibrium process at commutation process itself, if the coke oven main body system is adjusted in this process, forces it to reach in stable process, often needs system is carried out to adjustment by a relatively large margin.Be unfavorable for that on the contrary system reaches steady state as early as possible, significantly adjust simultaneously, make on the contrary the security of system and performance all descend to some extent.
Through contriver's experimental verification repeatedly, in the process of system commutation, the coke oven main body system suspends focusing furnace body loop modulation, be conducive on the contrary system and reach as early as possible steady state, therefore the present embodiment is when system need to commutate, at first hydraulic switch 8 send to start commutation signal to the coke oven main body system, with notice coke oven main body system according to the adjusting in furnace body loop that stops focusing of this signal.
And when commutation finishes, hydraulic switch 8 sends and stops commutation signal to the coke oven main body system, informed that the commutation of coke oven main body system finishes, the coke oven main body system stops commutation signal according to this just can come back to normal coke oven body loop modulation, makes system reach steady state after commutation finishes.
Preferably, the beginning commutation signal that hydraulic switch 8 sends to the coke oven main body system equals with the time that stops commutation signal or starts the moment of commutating early than actual.For the focus adjusting in furnace body loop of stopping in the process of system commutation of making that the coke oven main body system can be promptly and accurately, the beginning commutation signal that hydraulic switch 8 sends to the coke oven main body system and the time that stops commutation signal should equaling or early than the actual moment that starts commutation.The security of this body loop of coke oven in favourable like this assurance commutation process.
The coke oven main body system commutation loop control method of the present embodiment can be in commutation process, make system keep stable, effectively contained the generation of the more unsettled situation of more adjusting of the adjusting in focusing furnace body loop in the commutation process, can effectively improve stability and the security of this body loop of coke oven, can also improve the adjusting efficiency of this body loop of coke oven, corresponding can effectively enhancing productivity simultaneously.
Preferably, in the situation that the coke oven main pipe pressure is low, the coke oven main body system sends to hydraulic switch 8 by the low guard signal of coke oven main pipe pressure.
For the control that makes hydraulic switch 8 in commutation process is effectively guaranteed safely, prevent hydraulic switch 8 in the situation that the coke oven main pipe pressure is low is still commutated, in the situation that the coke oven main pipe pressure is low, the coke oven main body system sends to hydraulic switch 8 by the low guard signal of coke oven main pipe pressure.Hydraulic switch 8 is according to the chain guard signal of sending of main pipe pressure low signal of receiving.Whether proceed commutation thereby notify operator in the situation that current coke oven main pipe pressure is low, thereby further improve the security of producing.
Preferably, in the situation that the coke oven main pipe pressure is extremely low, the coke oven main body system sends to hydraulic switch 8 by the extremely low guard signal of coke oven main pipe pressure.
For the control that makes hydraulic switch 8 in commutation process is effectively guaranteed safely, prevent hydraulic switch 8 in the situation that the coke oven main pipe pressure is extremely low is still commutated, in the situation that the coke oven main pipe pressure is extremely low, the coke oven main body system sends to hydraulic switch 8 by the extremely low guard signal of coke oven main pipe pressure.Hydraulic switch 8 is according to the chain shutdown of main pipe pressure utmost point low signal of receiving.Thereby under extremely low hazardous condition, force to stop switch operation at the coke oven main pipe pressure, thereby further improve the security of producing.
Further preferably, during lower than 500Pa, the coke oven main pipe pressure is judged to be to the coke oven main pipe pressure extremely low when coke oven supervisor's pressure.Generally speaking, the pressure of being responsible for when coke oven exist higher security risk lower than 500Pa, now should do not commutated in principle, otherwise the danger had an accident is arranged.Therefore, this preferred embodiment can the coke oven main pipe pressure is extremely low decision condition be decided to be coke oven supervisor's pressure lower than 500Pa,, carry out the treating processes of previous embodiment, thereby effectively ensure the security of producing during lower than 500Pa at coke oven supervisor's pressure.
Further preferably, signal is by the DP bus transfer.DP bus (Profibus-DP) is a kind of high-speed communication connection through optimizing, it is widely used in communicating by letter between industrial equipments level Controlling System and distributing I/O, it has been widely used in the fields such as automated manufacturing, process industry automatization as a kind of important component part of Process FieldbusROFIBUS.Because the DP bus transfer is simple and easy to establish, reliability is higher, and wiring is easy, and laid down cost is lower.Therefore, for cost-saving, but the practicality of raising method, the beginning commutation signal of this preferred embodiment, the commutation signal that stops, main pipe pressure low signal, main pipe pressure utmost point low signal can be by the DP bus transfer of laying between coke oven main body system and hydraulic switch.
Coke oven main body system commutation loop control method of the present invention can be in commutation process, make system keep stable, effectively contained the generation of the more unsettled situation of more adjusting of the adjusting in focusing furnace body loop in the commutation process, can effectively improve stability and the security of this body loop of coke oven, can also improve the adjusting efficiency of this body loop of coke oven simultaneously, corresponding can effectively enhancing productivity, and application cost of the present invention is low, and reliability is high, can widespread use in coking industry.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a coke oven main body system commutation loop control method, is characterized in that, comprises the following steps:
Hydraulic switch sends and starts commutation signal to the coke oven main body system;
Described coke oven main body system suspends coke oven body loop modulation according to described beginning commutation signal;
Described hydraulic switch sends and stops commutation signal to described coke oven main body system;
Described coke oven main body system comes back to normal coke oven body loop modulation according to the described commutation signal that stops.
2. coke oven main body system commutation loop control method according to claim 1, it is characterized in that the described beginning commutation signal that described hydraulic switch sends to described coke oven main body system and the described time that stops commutation signal equaling or early than the actual moment that starts commutation.
3. coke oven main body system commutation loop control method according to claim 1, it is characterized in that, also comprise: in the situation that the coke oven main pipe pressure is low, described coke oven main body system sends to described hydraulic switch by the low guard signal of coke oven main pipe pressure, and described hydraulic switch is according to the chain guard signal of sending of described main pipe pressure low signal of receiving.
4. coke oven main body system commutation loop control method according to claim 1; it is characterized in that; also comprise: in the situation that the coke oven main pipe pressure is extremely low; described coke oven main body system sends to described hydraulic switch by the extremely low guard signal of coke oven main pipe pressure, and described hydraulic switch is according to the chain shutdown of described main pipe pressure utmost point low signal of receiving.
5. coke oven main body system commutation loop control method according to claim 4, is characterized in that, when coke oven supervisor's pressure, during lower than 500Pa, the coke oven main pipe pressure is judged to be to described coke oven main pipe pressure extremely low.
6. according to the described coke oven main body system of arbitrary claim commutation loop control method in claim 1 to 5, it is characterized in that, described signal is by the DP bus transfer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310446830.2A CN103468280B (en) | 2013-09-27 | 2013-09-27 | Coke oven body system commutation circuit control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310446830.2A CN103468280B (en) | 2013-09-27 | 2013-09-27 | Coke oven body system commutation circuit control method |
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| CN103468280A true CN103468280A (en) | 2013-12-25 |
| CN103468280B CN103468280B (en) | 2015-06-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88105030A (en) * | 1988-02-22 | 1988-12-07 | 鞍山钢铁学院 | Coke oven collecting main pressure interlocking autocontrol method |
| CN201801484U (en) * | 2010-09-29 | 2011-04-20 | 南京梅山冶金发展有限公司 | Hydraulic switch of integrated coke oven |
| CN202829944U (en) * | 2012-09-14 | 2013-03-27 | 陕西陕煤黄陵矿业有限公司 | Mixing type tamping coke oven gas direction reversing monitoring system |
-
2013
- 2013-09-27 CN CN201310446830.2A patent/CN103468280B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88105030A (en) * | 1988-02-22 | 1988-12-07 | 鞍山钢铁学院 | Coke oven collecting main pressure interlocking autocontrol method |
| CN201801484U (en) * | 2010-09-29 | 2011-04-20 | 南京梅山冶金发展有限公司 | Hydraulic switch of integrated coke oven |
| CN202829944U (en) * | 2012-09-14 | 2013-03-27 | 陕西陕煤黄陵矿业有限公司 | Mixing type tamping coke oven gas direction reversing monitoring system |
Non-Patent Citations (2)
| Title |
|---|
| 孔德恩 等: "协调控制技术在焦炉集气管压力调节中的应用", 《山东化工》 * |
| 马长富 等: "多焦炉集气管压力智能控制系统", 《控制工程》 * |
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Effective date of registration: 20171031 Address after: 100096, 18, 5, 518, East Building Road, Xisanqi, Beijing, Haidian District Patentee after: Beijing Bestpower Worthysky Technology Co., Ltd. Address before: 100096, Beijing Haidian District Xisanqi building materials East Road, No. 18, can Bai building Patentee before: Beijing Bestpower Electrical Technology Co., Ltd. |
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Address after: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee after: Polytron Technologies Inc in Beijing Address before: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee before: Beijing Bestpower Worthysky Technology Co., Ltd. |
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