CN205874470U - Blast funnace hot blast stove optimal control system - Google Patents
Blast funnace hot blast stove optimal control system Download PDFInfo
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- CN205874470U CN205874470U CN201620653285.3U CN201620653285U CN205874470U CN 205874470 U CN205874470 U CN 205874470U CN 201620653285 U CN201620653285 U CN 201620653285U CN 205874470 U CN205874470 U CN 205874470U
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Abstract
The utility model discloses a blast funnace hot blast stove optimal control system, including backstage industrial computer, debugging PC, switch, PLC control system and a N optimal control ware, the optimal control system adopts bus connection, and backstage industrial computer, debugging PC, switch, PLC control system and a N optimal control ware are connected respectively in the bus, PLC control system gathers the operating parameter of hot -blast furnace and sends for each optimal control ware through the switch, and each optimal control ware is according to the operational aspect production optimal control instruction of hot -blast furnace to give PLC control system through the switch with the optimal control instruction issue, realize the optimal control to the hot -blast furnace. The utility model discloses can be under different coal gas pressure and calorific value change automatic operation, changed the situation that hot -blast furnace for a long time is in manual operation basically, improved the operating efficiency of hot -blast furnace, saved manpower resources.
Description
Technical field
This utility model belongs to automatic control technology field, particularly to a kind of blast funnace hot blast stove Optimal Control System.
Background technology
Blast furnace is the unit that steel and iron industry produces the pig iron, and it needs hot blast to carry out combustion of coke with reduction of iron ore Cheng Tie
Water, the effect of air stove is blast heating to the temperature required, it is the heat exchanger by the work of " accumulation of heat " principle.In burning
Burn in room coal gas, and high-temp waste gas is by checker brick and is allowed to accumulation of heat, and after checker brick fully heat, air stove just can change into sending
Wind, cold wind is heated through checker brick and sends.Blast furnace is generally equipped with 3 ~ 4 air stovees, and the work process of each air stove is exactly
Burning, the repetitive process of air-supply.When " single stove air-supply ", blowing for one, remaining is in heating (also known as burning or burning stove), in turn
Change；When " air-supply in parallel ", two in heating.Due to the air stove of just air-supply, the hot blast temperature of output is higher, the most gradually
Decline, constant for the hot blast temperature keeping output, therefore utilize the hot blast temperature regulation valve of bypass, control the cold blast rate that is mixed into so that
Hot blast temperature is constant, and for " air-supply in parallel " that heat is in parallel, constant being by mean of of its hot blast temperature controls leading stove and rear row stove
Air quantity ratio (controlling its cold air adjusting valve aperture) reach.
The operation of air stove mainly includes two large divisions, i.e. Combustion System and certainly move stove.These two parts operate, both at home and abroad
The air stove partial automation the most of big-and-middle-sized blast furnace, but mainly basic automatization, the most no realization does not automatically controls, i.e. only
Gas main Stress control and coal gas and air control valve position or flow is had to automatically control, then Artificial Control valve position or flow
Setting value or aperture.
The quality of hot stove furnace operating directly affects the height of pathogenic wind-warm, owing to gas pressure and calorific value are to be continually changing,
Need to constantly adjust the quantity delivered of air and coal gas in order to reach optimal combustion state, bring necessarily so to hot stove furnace operating
Difficulty and bigger labor intensity, if simultaneously air capacity is not enough, it is insufficient to burn, its efficiency of combustion is the highest certainly,
Also the discharge quality of direct relation air stove coal smoke, causes severe contamination to environment；But air the most also can make smoke evacuation take away
Heat increases, the most uneconomic.The burning optimization of air stove at present relies primarily on commissioning staff and constantly observes vault temperature
The change of degree, if current dome temperature rises very fast, rule of thumb judges to think that current proportioning is suitable, does not adjusts；As
Really vault rises slowly or declines, and rule of thumb judges to think that proportioning is lacked of proper care, and at this moment operator will adjust air or coal gas
The size of amount, to obtain the optimum air coal ratio method of operation, this control mode wastes time and energy, and the most this firing optimization method is not
Can carry out the most automatically adjusting control program and make air stove be in optimum operation situation according to the change of service condition, thus make
Become the wasting of resources.
Firstly, since the various reasons such as the operation of blast furnace or the working of a furnace, cause the gas pressure of total pipe network, hot-restriking die,
It addition, the temperature and pressure of the temperature and pressure of preheating gas, preheated air also can fluctuate, air stove amount of stored heat may have richness
Abundant, it is required for revising coal gas and air valve seat opening.Secondly, dome temperature is too low is to affect China's hot blast temperature to improve further
A big obstacle.It addition, the control of the dome temperature of air stove dome temperature management phase and flue-gas temperature climbing speed is a pair
How contradiction, determine suitable air-fuel ratio, while stable dome temperature, makes flue-gas temperature increase rapidly, so that hot blast
Stove is in the fired state of optimum, is the key of Combustion of Hot Air Furnace control.
At present, the air-fuel ration control of domestic and international air stove mainly has traditional control method, mathematical model method, artificial intelligence
Method.The main proportional extremum value control method of traditional control method and oxygen content of smoke gas tandem proportional controlling means, but due to can not
Change air-fuel ratio in time, be difficult to realize the best combustion of air stove, and oxygen determination instrument cost is high, be difficult to safeguard, therefore, actual make
Not ideal by effect；Mathematical model method can by change stove, air-supply be combined as a whole, it is achieved closed-loop automatically controls, but due to inspection
Measuring point is many, is not sufficiently stable at working condition, is difficult to realize in air stove that equipment is relatively low；Artificial intelligence approach mainly has god
Through network and fuzzy control, ANN Control has an extremely strong self-learning capability to Combustion of Hot Air Furnace process, but capacity of resisting disturbance
More weak, and fuzzy control is not required to mathematical model, and have stronger capacity of resisting disturbance, but fuzzy reasoning table and scale factor can not
Become, therefore, it is difficult to ensure to stablize the needs of dome temperature and the requirement of flue-gas temperature control simultaneously.
As for the mathematical model set, in addition to considerably complicated, more need to arrange and automatically analyze the various composition of heating gas
Analyzer, this instrument, in addition to costliness, also needs good maintenance, a lot of factories to be difficult to.Mathematical model to be made is effective,
Also require good to improve basic automatization.Certainly, Artificial Control, not only need special messenger to operate, and be difficult in air stove whole
Burning each stage in period sets coal gas and combustion air flow in time, and (air stove of AISC No.10 large blast furnace is in whole burning
Period coal gas and combustion air flow the most constant), it is also difficult to air blast temperature when preheating gas and air temperature variations, needed for blast furnace
Degree and during changes in flow rate, the change of combustion air pressure time, air stove amount of stored heat is when still having affluence, revise air stove the most in time and add
The coal gas of heat and air capacity, thus do not reach purpose that is energy-conservation and that optimize stove operation.
Utility model content
In order to solve the technical problem that above-mentioned background technology proposes, it is excellent that this utility model aims to provide a kind of blast funnace hot blast stove
Networked control systems, it is possible to automatically run under different gas pressures and calorific value change, change air stove and the most substantially locate
In manually-operated situation, improve the operational efficiency of air stove, save human resources.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is:
A kind of blast funnace hot blast stove Optimal Control System, including backstage industrial computer, debugging PC, switch, PLC control system
With N number of optimal controller, described Optimal Control System uses bus to connect, backstage industrial computer, debugging PC, switch, PLC control
System processed and N number of optimal controller are connected in bus, and described PLC control system gathers the operational factor of air stove and leads to
Cross switch and be sent to each optimal controller, in each optimal controller, store all kinds of optimisation strategy, backstage industrial computer and debugging
PC combines all kinds of optimisation strategy according to the ruuning situation of air stove, generates optimal control instruction, and will be optimized by switch
Control instruction is sent to PLC control system, it is achieved the optimal control to air stove.
Preferred version based on technique scheme, quantity N of the optimal controller comprised in described Optimal Control System
≤5。
Preferred version based on technique scheme, described optimal controller uses embedded multi-core central processing unit.
Preferred version based on technique scheme, the dust-proof grade of described embedded multi-core central processing unit is IP40.
Preferred version based on technique scheme, the shockproof grade of described embedded multi-core central processing unit is 5g.
The beneficial effect that employing technique scheme is brought:
This utility model overcome coal gas, air pressure frequent fluctuation and calorific value of gas change these unfavorable factors to heat
The impact of wind furnace, makes the dome temperature of air stove be stabilized to setting value, it is achieved that the stable operation of air stove and economical combustion.
This utility model can run under different gas pressures and calorific value change automatically, it change air stove for a long time with
It is substantially at manually-operated situation, improves operational efficiency and the wind pushing temperature of air stove, save human resources, and be
System automaticity is high, good reliability.
This utility model uses multiple optimal controllers to be optimized control, and between each optimal controller, holding load divides
Load, thus reduce the probability that all Optimization Progress and security procedure run on same optimal controller, advantageously reduce
The difference of the cpu load of each optimal controller.
Accompanying drawing explanation
Fig. 1 is the block diagram of system of the present utility model.
Fig. 2 is the multi-process of the many optimal controllers of this utility model, loads and share schematic diagram.
Detailed description of the invention
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
The block diagram of system the most of the present utility model, a kind of blast funnace hot blast stove Optimal Control System, including backstage
Industrial computer, debugging PC, switch, PLC control system and N number of optimal controller, described Optimal Control System uses bus even
Connecing, backstage industrial computer, debugging PC, switch, PLC control system and N number of optimal controller are connected in bus, described
PLC control system gathers the operational factor of air stove and is sent to each optimal controller, in each optimal controller by switch
Store all kinds of optimisation strategy, backstage industrial computer and debugging PC and combine all kinds of optimisation strategy according to the ruuning situation of air stove,
Generation optimal control instructs, and by switch, optimal control instruction is sent to PLC control system, it is achieved excellent to air stove
Change and control.
Quantity N≤5 of the optimal controller comprised in Optimal Control System.
Optimal controller supports N weight redundancy (N≤5), to improve the stability of system.
Optimal controller supports multi-process technology and load amortization techniques, as in figure 2 it is shown, can normal work simply by the presence of one
The optimal controller made, system just can provide service.One optimal controller supports that multiple control processes are run simultaneously, divides many
Individual Optimization Progress and security procedure, it is assumed that have 3 air stovees, wherein Optimization Progress comprises shared air stove Optimization Progress, 1#
Air stove Optimization Progress, 2# air stove Optimization Progress, 3# air stove Optimization Progress and security procedure, each air stove Optimization Progress
Realizing the optimal control to this air stove, shared air stove Optimization Progress is optimized control to common sparing, as coal gas is total
Ductwork pressure controls.
Each air stove Optimization Progress does not interfere with each other mutually, and beneficially configuration is downloaded when " on-line debugging ".As to 1#
Air stove controls to optimize configuration amendment and does not interferes with the operation that 2# air stove controls to optimize, and also need not stop during a program upgrading
Only all of Optimization Progress.
Between each optimal controller, holding load is shared, thus reduces all Optimization Progress and security procedure same
The probability run on optimal controller, advantageously reduces the difference of the cpu load of each optimal controller.
In the present embodiment, described optimal controller uses embedded multi-core central processing unit, and performance is not lower than
Intel Celeron 847/807UE/Corei7-2655LE, 1.1GHz/1GHz/2.2GHz processor, and can be at-10-50
Degree Celsius lower stable operation, dust-proof meets IP40 standard, and shockproof properties meets 5g(acceleration of gravity).
Above example only illustrates technological thought of the present utility model, it is impossible to limit protection model of the present utility model with this
Enclose, every according to the technological thought that the utility model proposes, any change done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected.
Claims (5)
1. a blast funnace hot blast stove Optimal Control System, it is characterised in that: include backstage industrial computer, debugging PC, switch,
PLC control system and N number of optimal controller, described Optimal Control System use bus connect, backstage industrial computer, debugging PC,
Switch, PLC control system and N number of optimal controller are connected in bus, and described PLC control system gathers air stove
Operational factor is also sent to each optimal controller by switch, stores all kinds of optimisation strategy, backstage in each optimal controller
Industrial computer and debugging PC combine all kinds of optimisation strategy according to the ruuning situation of air stove, generate optimal control instruction, and pass through
Optimal control instruction is sent to PLC control system by switch, it is achieved the optimal control to air stove.
A kind of blast funnace hot blast stove Optimal Control System, it is characterised in that: described Optimal Control System
In quantity N≤5 of optimal controller that comprise.
A kind of blast funnace hot blast stove Optimal Control System, it is characterised in that: described optimal controller is adopted
Use embedded multi-core central processing unit.
A kind of blast funnace hot blast stove Optimal Control System, it is characterised in that: in described embedded multi-core
The dust-proof grade of central processor is IP40.
A kind of blast funnace hot blast stove Optimal Control System, it is characterised in that: in described embedded multi-core
The shockproof grade of central processor is 5g.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620653285.3U CN205874470U (en) | 2016-06-27 | 2016-06-27 | Blast funnace hot blast stove optimal control system |
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| CN201620653285.3U CN205874470U (en) | 2016-06-27 | 2016-06-27 | Blast funnace hot blast stove optimal control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213099A (en) * | 2018-08-28 | 2019-01-15 | 天津闪速炼铁技术有限公司 | The application method and system of mathematical model control production Internet-based |
| CN109240179A (en) * | 2018-11-12 | 2019-01-18 | 魏松涛 | Distributed sand table model control system |
| CN114292975A (en) * | 2021-12-31 | 2022-04-08 | 四川德胜集团钒钛有限公司 | Combustion control method for blast furnace hot blast stove |
-
2016
- 2016-06-27 CN CN201620653285.3U patent/CN205874470U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213099A (en) * | 2018-08-28 | 2019-01-15 | 天津闪速炼铁技术有限公司 | The application method and system of mathematical model control production Internet-based |
| CN109213099B (en) * | 2018-08-28 | 2020-10-16 | 天津闪速炼铁技术有限公司 | Application method and system for controlling production based on internet mathematical model |
| CN109240179A (en) * | 2018-11-12 | 2019-01-18 | 魏松涛 | Distributed sand table model control system |
| CN114292975A (en) * | 2021-12-31 | 2022-04-08 | 四川德胜集团钒钛有限公司 | Combustion control method for blast furnace hot blast stove |
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