CN103468280B - Coke oven body system commutation circuit control method - Google Patents
Coke oven body system commutation circuit control method Download PDFInfo
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- CN103468280B CN103468280B CN201310446830.2A CN201310446830A CN103468280B CN 103468280 B CN103468280 B CN 103468280B CN 201310446830 A CN201310446830 A CN 201310446830A CN 103468280 B CN103468280 B CN 103468280B
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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, particularly relate to a kind of Coke oven body system commutation circuit control method.
Background technology
Coke oven, also known as pit kiln, is the crucial thermal apparatus of coal coking.
At present, along with the development of automatic technology, coke oven achieves Automated condtrol.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 system compositions such as burnt system and water treatment system.Wherein, coke oven main body system is most important automation control system, whether the work of coke oven main body system is stable and reliable, is related to whether whole coking process flow process can safely and steadily run.
In the loop control of existing coke oven main body system, generally regulated by single loop or expert systems.But no matter be that single loop regulates or expert control system, all do not consider the transformation problem of the system that commutation process brings.Namely in commutation process still routinely loop carry out regulating and controlling, the corresponding system that causes regulates more unstable and more unstable, and system, after commutation terminates, arrives the serious overlength of stable regulating time.Hydraulic switch does not stop in time when coke oven main pipe pressure is extremely low, correspondingly also result in potential safety hazard, the simultaneously also serious combustion efficacy having influence on coke, and shortens the work-ing life of coke oven itself.
In the loop modulation of coke oven main body system, current most enterprises uses single loop control method, namely the adjustment of flue pressure, blast furnace gas engine (Jiao) side pressure regulation and Mixture Density Networks mechanism of qi (Jiao) effluent amount adjustable value is divided by artificial setting coke-oven gas main conduit flow 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 Ye You enterprise adopts level two to regulate at present, namely in the loop modulation process of coke oven, considered the condition such as calorific value, humidity, control the stable of coke furnace system regulating loop, the single loop before comparing regulates its degree of stability to alleviate to some extent.But these two kinds of methods all do not consider the disturbance that commutation process brings whole system, cause loop in commutation process to have and significantly regulate, even if commutation terminate after, system also needs just can return to steady state for a long time.
Meanwhile, when the loop modulation of the coke oven main body system of prior art does not consider that coke oven main pipe pressure is low yet, how reversing machine carries out the problem controlled, and this have impact on the safe operation of system greatly, brings comparatively serious potential safety hazard.
Therefore, the security and the commutation efficiency that how effectively to improve Coke oven body system commutation circuit control just become problem demanding prompt solution.
Summary of the invention
Effectively cannot improve the security that Coke oven body system commutation circuit controls and the problem commutating efficiency for solving prior art, the invention provides a kind of Coke oven body system commutation circuit control method, comprising the following steps:
Hydraulic switch sends to coke oven main body system and starts commutation signal;
Described coke oven main body system suspends coke oven body loop modulation according to described beginning commutation signal;
Described hydraulic switch sends to described coke oven main body system and stops commutation signal;
Described coke oven main body system comes back to normal coke oven body loop modulation according to described stopping commutation signal.
The time of the described beginning commutation signal that described hydraulic switch sends to described coke oven main body system and described stopping commutation signal equaling or early than the actual moment starting to commutate.
Also comprise: when coke oven main pipe pressure is low, low for coke oven main pipe pressure guard signal is sent to described hydraulic switch by described coke oven main body system.
Described hydraulic switch sends guard signal according to the described main pipe pressure low signal received is chain.
Also comprise: when coke oven main pipe pressure is extremely low, extremely low for coke oven main pipe pressure guard signal is sent to described hydraulic switch by described coke oven main body system.
Described hydraulic switch is according to the chain shutdown of described main pipe pressure pole low signal received.
When the pressure of coke oven supervisor is lower than 500Pa, coke oven main pipe pressure is judged to be described coke oven main pipe pressure is extremely low.
Described signal is by DP bus transfer.
Coke oven body system commutation circuit control method of the present invention can in commutation process, system is made to keep stable, the effective generation having contained in commutation process the situation regulating more unstable and more unstable of the adjustment in furnace body loop of focusing, effectively can improve stability and the security of this body loop of coke oven, the adjustment efficiency of this body loop of coke oven can also be improved simultaneously, correspondingly can effectively to enhance productivity.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schema of the embodiment of Coke oven body system commutation circuit control method of the present invention.
Fig. 2 is the control texture schematic diagram of Coke oven body system commutation circuit control method of the present invention
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, 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, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the schema of the embodiment of Coke oven body system commutation circuit control method of the present invention, Fig. 2 is the control texture schematic diagram of Coke oven body system commutation circuit control method of the present invention, as depicted in figs. 1 and 2, the Coke oven body system commutation circuit control method of the present embodiment, can comprise the following steps:
Step 101, hydraulic switch 8 sends to coke oven main body system and starts commutation signal.
Step 102, coke oven main body system suspends coke oven body loop modulation according to beginning commutation signal.
Step 103, hydraulic switch 8 sends to coke oven main body system and stops commutation signal.
Step 104, coke oven main body system comes back to normal coke oven body loop modulation according to stopping commutation signal.
Particularly, as shown in Figure 2, System control structures 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 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 flue suction force point of adjustment 7, two hydraulic switchs 8 to be distributed in pusher side and coke side.
When needs commutate, first hydraulic switch 8 sends to coke oven main body system and starts commutation signal, by the beginning commutation signal received, such coke oven main body system just can know that system is about to commutation.Coke oven main body system just can start commutation signal time-out coke oven body loop modulation according to this.Start coke oven main body system in the process of commutation and concrete commutation like this to regulate with regard to furnace body loop of not focusing in system.This is because at a commutation process inherently nonequilibrium process, if coke oven main body system is adjusted in this process, force it to reach in stable process, often need the adjustment carrying out by a relatively large margin to system.Be unfavorable for that system reaches steady state as early as possible on the contrary, significantly adjust simultaneously, make the security of system and performance decline all to some extent on the contrary.
Through contriver's experimental verification repeatedly, in the process of system commutation, coke oven main body system suspends focusing furnace body loop modulation, be conducive to system on the contrary and reach steady state as early as possible, therefore the present embodiment is when system needs commutation, first hydraulic switch 8 sends to coke oven main body system and starts commutation signal, to notify that coke oven main body system stops the adjustment in focusing furnace body loop according to this signal.
And at the end of commutation, hydraulic switch 8 sends to coke oven main body system and stops commutation signal, inform that the commutation of coke oven main body system terminates, coke oven main body system just can come back to normal coke oven body loop modulation according to this stopping commutation signal, makes system reach steady state after commutation terminates.
Preferably, the beginning commutation signal that sends to coke oven main body system of hydraulic switch 8 and stop the time of commutation signal to equal or early than the actual moment starting to commutate.In order to make coke oven main body system can the adjustment stopping focusing furnace body loop in the process of system commutation promptly and accurately, the beginning commutation signal that hydraulic switch 8 sends to coke oven main body system and stop the time of commutation signal to equal or early than the actual moment starting commutation.The security of this body loop of coke oven in favourable like this guarantee commutation process.
The Coke oven body system commutation circuit control method of the present embodiment can in commutation process, system is made to keep stable, the effective generation having contained in commutation process the situation regulating more unstable and more unstable of the adjustment in furnace body loop of focusing, effectively can improve stability and the security of this body loop of coke oven, the adjustment efficiency of this body loop of coke oven can also be improved simultaneously, correspondingly can effectively to enhance productivity.
Preferably, when coke oven main pipe pressure is low, low for coke oven main pipe pressure guard signal is sent to hydraulic switch 8 by coke oven main body system.
Hydraulic switch 8 sends guard signal according to the main pipe pressure low signal received is chain.
Be effectively guaranteed safely to make the control of hydraulic switch 8 in commutation process, prevent hydraulic switch 8 from still commutating when coke oven main pipe pressure is low, when coke oven main pipe pressure is low, low for coke oven main pipe pressure guard signal is sent to hydraulic switch 8 by coke oven main body system.Hydraulic switch 8 sends guard signal according to the main pipe pressure low signal received is chain.Thus notify whether operator proceed commutation when current coke oven main pipe pressure is low, thus improve the security of producing further.
Preferably, when coke oven main pipe pressure is extremely low, extremely low for coke oven main pipe pressure guard signal is sent to hydraulic switch 8 by coke oven main body system.
Hydraulic switch 8 is according to the chain shutdown of main pipe pressure pole low signal received.
Be effectively guaranteed safely to make the control of hydraulic switch 8 in commutation process, prevent hydraulic switch 8 from still commutating when coke oven main pipe pressure is extremely low, when coke oven main pipe pressure is extremely low, extremely low for coke oven main pipe pressure guard signal is sent to hydraulic switch 8 by coke oven main body system.Hydraulic switch 8 is according to the chain shutdown of main pipe pressure pole low signal received.Thus under the hazardous condition that coke oven main pipe pressure is extremely low, force to stop switch operation, thus improve the security of producing further.
Further preferably, when the pressure of coke oven supervisor is lower than 500Pa, coke oven main pipe pressure is judged to be that coke oven main pipe pressure is extremely low.Generally speaking, when namely the pressure of coke oven supervisor exist higher security risk lower than 500Pa, now should not commutate in principle, otherwise have the danger had an accident.Therefore, the decision condition that coke oven main pipe pressure is extremely low can be decided to be the pressure of coke oven supervisor lower than 500Pa by this preferred embodiment, namely, when the pressure of coke oven supervisor is lower than 500Pa, the treating processes of previous embodiment is performed, thus the effective security ensureing production.
Further preferably, signal is by DP bus transfer.DP bus (Profibus-DP) is that a kind of high-speed communication through optimizing connects, it is widely used in the communication between industrial equipments level Controlling System and distributing I/O, it has been widely used in the field such as automated manufacturing, process industry automatization as a kind of important component part of Process FieldbusROFIBUS.Because DP bus transfer is simple and easy to establish, reliability is higher, and wiring is easy, and laid down cost is lower.Therefore, in order to cost-saving, raising method can practicality, the beginning commutation signal of this preferred embodiment, stop commutation signal, main pipe pressure low signal, main pipe pressure pole low signal can by the DP bus transfer of laying between coke oven main body system and hydraulic switch.
Coke oven body system commutation circuit control method of the present invention can in commutation process, system is made to keep stable, the effective generation having contained in commutation process the situation regulating more unstable and more unstable of the adjustment in furnace body loop of focusing, effectively can improve stability and the security of this body loop of coke oven, the adjustment efficiency of this body loop of coke oven can also be improved simultaneously, correspondingly can effectively to enhance productivity, and application cost of the present invention is low, and reliability is high, can widespread use in coking industry.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (3)
1. a Coke oven body system commutation circuit control method, is characterized in that, comprises the following steps:
Hydraulic switch sends to coke oven main body system and starts commutation signal;
Described coke oven main body system suspends coke oven body loop modulation according to described beginning commutation signal;
Described hydraulic switch sends to described coke oven main body system and stops commutation signal;
Described coke oven main body system comes back to normal coke oven body loop modulation according to described stopping commutation signal;
The time of the described beginning commutation signal that described hydraulic switch sends to described coke oven main body system and described stopping commutation signal equaling or early than the actual moment starting to commutate;
When coke oven main pipe pressure is low, low for coke oven main pipe pressure guard signal is sent to described hydraulic switch by described coke oven main body system, and described hydraulic switch sends guard signal according to the described main pipe pressure low signal received is chain;
When coke oven main pipe pressure is extremely low, extremely low for coke oven main pipe pressure guard signal is sent to described hydraulic switch by described coke oven main body system, and described hydraulic switch is according to the chain shutdown of described main pipe pressure pole low signal received.
2. Coke oven body system commutation circuit control method according to claim 1, is characterized in that, when the pressure of coke oven supervisor is lower than 500Pa, coke oven main pipe pressure is judged to be described coke oven main pipe pressure is extremely low.
3. Coke oven body system commutation circuit control method according to claim 1, is characterized in that, described signal is by DP bus transfer.
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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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| CN201310446830.2A CN103468280B (en) | 2013-09-27 | 2013-09-27 | Coke oven body system commutation circuit control method |
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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 |
|---|
| 协调控制技术在焦炉集气管压力调节中的应用;孔德恩 等;《山东化工》;20091231;第38卷(第7期);第33-36页 * |
| 多焦炉集气管压力智能控制系统;马长富 等;《控制工程》;20080930;第15卷;第121-124页 * |
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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. |