CN104034174A - Automatic control system for furnace cooling sinter waste heat power generation - Google Patents

Automatic control system for furnace cooling sinter waste heat power generation Download PDF

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Publication number
CN104034174A
CN104034174A CN201410189325.9A CN201410189325A CN104034174A CN 104034174 A CN104034174 A CN 104034174A CN 201410189325 A CN201410189325 A CN 201410189325A CN 104034174 A CN104034174 A CN 104034174A
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cool furnace
control system
automatic control
waste heat
station
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CN104034174B (en
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王应丽
吴永强
栗继魁
康继锋
吕勇
朱建峰
于小环
高瑞芳
胡辉
段卫清
李晓燕
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CITIC Heavy Industries Co Ltd
Luoyang Mining Machinery and Engineering Design Institute Co Ltd
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CITIC Heavy Industries Co Ltd
Luoyang Mining Machinery and Engineering Design Institute Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses an automatic control system for furnace cooling sinter waste heat power generation and relates to the technical field of sintering waste heat utilization. The automatic control system does not affect production through a sintering machine and is reliable in operation for a brand new furnace cooling sinter waste heat power generation technology. The automatic control system comprises a field control station, an engineer station, an operator station, a server, a communication network, a data filing system, a report printing system and the like which are arranged according to the whole technological process, including transfer, furnace cooling, heat extraction, power generation and the like, of sinter. According to the automatic control system, electrical safety of signals is achieved on a signal input loop at low cost, and redundancy frameworks are used in a remote communication module, a data communication bus, a controller, a control-level network and an operation-level network, so that the safety and reliability of the system are extremely improved. The automatic control system can achieve coordinated control over the system feeding quantity, the air supply quantity of a cooling furnace, the water consumption and steam yield of a waste heat boiler, the generating capacity, power consumption and other parameters, meet the requirements for safe operation and high integrated automation and fully achieve maximized utilization of waste heat.

Description

Stove cold sinter cogeneration automatic control system
Technical field
The present invention relates to sintering waste heat and utilize technical field, specifically, is a kind of automatic control system for the cogeneration of stove cold sinter.
Background technology
Steel and iron industry is national economy important foundation industry, and energy-output ratio accounts for 15% of national industrial total energy consumption, is the key industry of energy-saving and emission-reduction.In steel manufacture process, the energy consumption of sintering circuit is higher, is generally the 10-15% of iron and steel enterprise's total energy consumption.At present, sintering deposit is that to utilize air dielectric to carry out through straight line cooler or circular cooler cooling, and sintering deposit is in cooling process, and heat energy becomes waste gas sensible heat, and EGT is between 100-400 DEG C.In sintering circuit total energy consumption, there is nearly 50% heat energy with sintering device flue gas and the discharge of cooling machine waste gas sensible heat form.
Stove cold sinter waste heat power generation process flow and equipment configuration, be fully utilized the waste heat discharging in sintering deposit cooling procedure, and generated energy obviously improves, sintering system obviously reduces from power consumption rate, the obvious feature of energy-saving effect, is a revolutionary technology, has vast potential for future development.For this brand-new stove cold sinter cogeneration technology, solve the coordination between many technological parameters, coupling and controlling, reaches and the consistent state of the art of expection, could realize best technological achievement and maximum economic benefit.A set of real-time of its configuration is excellent, good stability, and reliability and safe automatic control system, to improving this brand-new system expection utilization rate of waste heat, reduce energy consumption, reach final distinct economic and have great importance.
Summary of the invention
The object of the invention is for solving the problems of the technologies described above, do not affect sintering machine production, reliable, accuracy-control system various process parameters for stove cold sinter cogeneration technology provides one, make rationally a set of automatic control system of efficient operation of stove cold sinter afterheat generating system.
The present invention for achieving the above object, the technical scheme adopting is: stove cold sinter cogeneration automatic control system, the multiple field control stations that comprise, hot ore deposit transhipment automatic control system, cool furnace charging automatic control system, cool furnace automatic control system, cold ore deposit transhipment automatic control system, waste heat boiler automatic control system, steam turbine automatic control system, server, operator station;
Described multiple field control stations comprise transhipment control station, cool furnace control station, waste heat boiler control station and steam turbine control station, transhipment control station control hot ore deposit transhipment automatic control system and cold ore deposit transhipment automatic control system, cool furnace control station control cool furnace charging automatic control system and cool furnace automatic control system, waste heat boiler control station control waste heat boiler automatic control system, steam turbine control station control steam turbine automatic control system;
Described hot ore deposit transhipment automatic control system is controlled hot ore deposit transporting velocity, and it comprises take out device, chain board conveying mechanism; Transhipment control station gathers current of electric and the rotary speed parameter of chain board conveying mechanism, make after contrast with the sintering deposit load collecting, adjust hot ore deposit transporting velocity according to comparing result, given parameters is outputed to frequency converter, configure of frequency AC Drive has frequency PID controller, change at 0.20m/s~0.30m/s thereby control chain scraper conveyor rotating speed, meet the delivery requirements of sintering deposit under different production status, chain scraper conveyor by the sintering deposit of 650-750 degree left and right send in cool furnace, carry out cooling;
Described cool furnace charging automatic control system is controlled cloth speed, and it comprises cool furnace distributing device, bar type push-pull valve, water-cooling system and lubricating system, the motor of cool furnace distributing device adopts frequency converter configuration frequency PID controller, control the inhomogeneities that cool furnace distributing device rotating speed is produced to adapt to sintering deposit, cool furnace charging automatic control system gathers the fault message of cool furnace, in the time breaking down, close bar type push-pull valve, cool furnace fire door is sealed completely, in water-cooling system and lubricating system, be furnished with cooling-water temperature sensor, water sensor, level sensor and fuel level sensor, for carrying out chain control with cool furnace distributing device, the sintering mineral aggregates of 650 degree-750 degree that spin out from cool furnace distributing device below funnel and chute enter cool furnace and carry out cooling and heat-obtaining,
Material level, pressure and the furnace temperature of described cool furnace automatic control system to sintering feed in cool furnace controlled, and comprises cool furnace the prestore vibra feeder of chamber, cooling chamber, cool furnace below, the air blast of bottom, air-introduced machine, flue and the various by-pass valve control thereof of cool furnace bottom, the cool furnace top, chamber that prestores is provided with material-level detecting device, build material level PID controller, the material level signal collecting according to material-level detecting device, regulate frequency and the amplitude of the vibra feeder of cool furnace below, change the size of stove load, change and control stove material level, id-motor configuration frequency converter and the frequency PID controller of cool furnace bottom, regulate the adjustable cool furnace internal pressure of rotation speed of fan, prestore chamber top of cool furnace is provided with pressure sensor, jointly form negative pressure controller with air-introduced machine and fans entrance control valve, ensure the cool furnace micro-vacuum state of chamber at-200Pa that prestore, blower motor configuration frequency converter and the frequency PID controller of cool furnace bottom, regulate cold blast rate in the adjustable cool furnace of rotation speed of fan, thereby temperature in regulating stove, vibra feeder below is provided with temperature sensor, with air blast and the common formation temperature controller of two blinds control valves of fan outlet, the sintering deposit drop temperature that ensures cool furnace is controlled at below 120 DEG C, sintering deposit completes the heat exchange of sintering deposit and cooling-air at cooling chamber, enter in cold ore deposit transhipment operation,
Described cold ore deposit transhipment automatic control system comprises the mechanical, electrical sub-skin band scale ﹑ hyperthermia radiation meter of belt conveying and overtemperature watering device, belted electronic balance carries out consecutive weighings to sintering deposit, the deviate of weighing value and setting value feedovers to vibra feeder, ore discharge amount is controlled in stable range of set value, when detecting sintering deposit temperature, hyperthermia radiation meter exceedes setting value above in limited time, start water injector cooling, protection belt feeder;
Described waste heat boiler automatic control system comprises the two pressure boilers of two temperature, boiler feed pipe, feed pump, boiler steam pipe, boiler-steam dome, feedwater piping is established flow sensor, jet chimney establishes flow sensor and boiler-steam dome is established level sensor, waste heat boiler inner sensor all adopts water level cascade PID controller, waste heat boiler automatic control system compares water level signal and given signal, and steam flow is as feedforward amount, and controller is opened control boiler water level by controlling feed-water valve;
Described steam turbine automatic control system comprises turbine controller, condenser well, condenser is mended demineralized water control valve, condenser recirculation control valve and condenser pump, turbine controller gathers steam turbine tach signal, power signal and steam pressure signal composition cascade PID control loop, and the signal results collecting is exported to condenser and mend water in dust removal control valve, thereby control the throttle flow of main steam, make turbine generator system stable output power in setting value, Water in Condenser Well Water Level is higher than setting value, open condenser pump, recycle the adjusting of control valve and condenser benefit demineralized water control valve by condenser simultaneously, Water in Condenser Well Water Level is stabilized in setting range.
Described field control station is provided with in multiple switch boards, switch board and comprises signal isolated loop, Surge suppression loop, and analog input module, thermal resistance signal are changed the remote communication module of module, analog output module, switching value inputting modular unit, switching value output module and redundancy.
 
The redundancy communication module of described field control station by the fieldbus of redundancy and main redundant manipulator in cabinet be connected from redundant manipulator, main redundant manipulator and working asynchronously from redundant manipulator, main redundant manipulator and being connected to respectively the controlled stage optical fiber ethernet ring network of redundancy from redundant manipulator, same engineer station, server, between Historical archiving server and other controller, carry out remote transfer of data, between server and operator station, utilize operation level optical fiber ethernet ring network to carry out exchanges data, make operation level equipment and controlled stage equipment in the different network segments.
The invention has the beneficial effects as follows:
1, monitoring sintering deposit movement system, keeps chain mat machine, and the good operation of the equipment such as conveyer, predicts possible fault, and handles it in advance, has realized the sintering mineral aggregate stream handover operation under failure condition simultaneously.
2, automatically regulate the air quantity of air-introduced machine and air blast, rationally control the wind-warm syndrome of sintering deposit cool furnace, blast, regulates the unlatching of rotating blanking valve automatically, rationally controls the material level of sintering deposit cool furnace.By the accurate control to cool furnace parameters, do not affecting under the prerequisite of sinter strength and quality, realize the maximization of UTILIZATION OF VESIDUAL HEAT IN, as far as possible many safety and economic operations that meets unit.
3, automatically regulate Boiler Steam desuperheat injection flow rate, ensure that boiler export vapor (steam) temperature is in the zone of reasonableness of medium temperature and medium pressure boiler parameter.The water level of medium temperature and medium pressure waste heat boiler is controlled automatically, ensures that Boiler Steam steam production and temperature, pressure thereof are in rational scope.
4, realize the accurate control of stove cold sinter afterheat generating system, the integrated automation of safe operation and height.Height integrated automation has realized under the prerequisite of producing at try one's best few operator and high safety, creates maximum sharp economic benefit.
Brief description of the drawings
Fig. 1 is control system structural representation of the present invention;
Fig. 2 is the structural representation of cool furnace heat-obtaining automatic control loop;
Fig. 3 is the process flow diagram of stove cold sinter cogeneration;
Fig. 4 is the structural representation of signal isolated loop of the present invention;
Fig. 5 is the structural representation in Surge suppression of the present invention loop;
Fig. 6 is that the signal of control system of the present invention flows to schematic diagram;
Graphical indicia: 1, main redundant manipulator, 2, from redundant manipulator, 3, controlled stage optical fiber ethernet ring network, 4, Historical archiving server, 5, server, 6, engineer station, 7, Report Printing System, 8, operation level optical fiber ethernet ring network, 9, active station, 10, on-scene communication bus, 11, the remote communication module of redundancy, 12, analog input module, 13, thermal resistance signal conversion module, 14, analog output module, 15, switching value inputting modular unit, 16, switching value output module, 17, transhipment control station, 18, cool furnace control station, 19, waste heat boiler control station, 20, steam turbine control station, 21, cool furnace, 22, disposable dust remover, 23, emergent air-release valve, 24, waste heat boiler, 25, secondary filter, 26, air-introduced machine, 27, chimney, 28, air blast, 29, valve-off, 30, flue gas flow control valve, 31, sintering machine, 32, breaker, 33, hot ore deposit conveying device, 34, cool furnace, 35, disposable dust remover, 36, emergency diffusion valve, 37, filling condensing turbine, 38, generator, 39, cooling tower, 40, water circulating pump, 41, condenser, 42, condensate pump, 43, gland steam heater, 44, low pressure feed water pump, 45, main feed pump, 46, oxygen-eliminating device, 47, cold ore deposit discharger, 48, cold ore deposit conveying device, 49, middle pressure drum, 50, low-pressure drum.
Detailed description of the invention
Shown in figure, detailed description of the invention is as follows:
Field process control station of the present invention is adopted AB1756-L6X as core controller.
The redundancy process control software that the present invention adopts is CONTROL LOGIX5000 and RS VIEW.
Multiple field control stations that stove cold sinter cogeneration automatic control system comprises, mainly contain transhipment control station, cool furnace control station, waste heat boiler control station and steam turbine control station.Each field control station has multiple switch boards, comprises the remote communication module of signal isolated loop, Surge suppression loop, analog input module, thermal resistance signal conversion module, analog output module, switching value inputting modular unit, switching value output module and redundancy in switch board.Signal isolated loop is for analog input loop, and the 4-20mA signal entering in cabinet with outside is connected, and has shielded outside dangerous current potential, has effectively ensured the safety of the interior signal of cabinet and equipment.Surge suppression loop, for the protection of electric power loop in cabinet and switching value input circuit, effectively prevents the abnormal high potential that outside electric shock and wiring error and induction etc. cause.Telecommunication in field control station adopts redundancy structure, has greatly increased the safe coefficient of system communication.
Surge suppression loop is arranged between switch board and large voltage input end, formed by piezo-resistance and several fuses, and the piezo-resistance two ends fuse of connecting respectively, large voltage passes into switch board through overcurrent fuse and piezo-resistance successively.
Described fuse is terminal-type fuse, and piezo-resistance is rated voltage 24V direct current, and pressure sensitive voltage is 1mA47V.
The characteristic becoming with voltage according to piezo-resistance resistance value, by the electric loop of the special combination of fuse and piezo-resistance composition.In the time having the voltage that exceedes piezo-resistance threshold value to enter piezo-resistance, form fast short circuit, utilize the fast molten characteristic of fuse, cut off and invade voltage circuit.
Using this combined loop as stable module, invade according to on-the-spot dangerous voltage and electric power loop the path mode that high voltage enters field process control station, carry out the selection of this module link position and method of attachment, only have correct layout link position and method of attachment, signal input module in guarantee cabinet, communication module, and the safety of controller.
The redundancy communication module 11 of field control station by the on-scene communication bus of redundancy and main redundant manipulator in cabinet be connected from redundancy heating exchanger, main redundant manipulator and from redundant manipulator synchronous working, the undisturbed while ensureing to switch each other.Main redundant manipulator and be connected to respectively the fine ethernet ring network of control aurora of redundancy and carry out remote transfer of data between same engineer station, server, Historical archiving server and other controller from redundant manipulator.Between server and operator station, utilize an other operation level optical fiber ethernet ring network to carry out exchanges data, guarantee operation level equipment and controlled stage equipment, in the different network segments, are avoided influencing each other and disturbing of communication.
Hot ore deposit transhipment automatic control system of the present invention is mainly controlled hot ore deposit transporting velocity.Comprise: take out device, chain board conveying mechanism.Transhipment control station gathers chain scraper conveyor current of electric, the parameters such as rotating speed, make after contrast with the sintering deposit load collecting, adjust hot ore deposit transporting velocity, given parameters is outputed to frequency converter, configure of frequency AC Drive has frequency PID controller, changes at 0.20m/s~0.30m/s thereby control chain scraper conveyor rotating speed, meets the delivery requirements of sintering deposit under different production status.The running status of whole system, operational factor, upload onto the server by controlled stage optical fiber ethernet ring network, being uploaded to operator station by operation level optical fiber ethernet ring network again monitors, start stop operation order simultaneously and emergent management order are issued to transhipment control station by operation level optical fiber ethernet ring network and controlled stage optical fiber ethernet ring network by operator station, export to chain board conveying mechanism.Chain scraper conveyor by the sintering deposits of general 700 about degree send in cool furnace, carry out cooling:
On the take out device of above-mentioned hot ore deposit transhipment automatic control system, be provided with contact capacity and be each 1 of the limit switch of Ac380V 5A, coordinate and control take out device and switch.
Described cool furnace charging automatic control system is mainly controlled cloth speed.Comprise: cool furnace distributing device, bar type push-pull valve, water-cooling system and lubricating system.Cool furnace distributing device motor adopts frequency converter configuration frequency PID controller, controls the inhomogeneities that cool furnace distributing device rotating speed is produced to adapt to sintering deposit.Meanwhile, cool furnace automatic control system gathers the fault message of cool furnace, once break down, closes bar type push-pull valve, and cool furnace fire door is sealed completely.In water-cooling system and lubricating system, be furnished with cooling-water temperature sensor, water sensor, level sensor and fuel level sensor, carry out chain control for same cool furnace distributing device.Cool furnace control station Cloth Collection device current of electric, the parameters such as rotating speed, hot ore deposit transporting velocity with transhipment control station is made after contrast, adjust cloth speed parameter, given parameters is outputed to frequency converter, after the material level limit signal cool furnace control station of cool furnace gathers simultaneously, as the order of closing bar type push-pull valve.All water temperatures, water level and oil level signal upload onto the server 5 by controlled stage optical fiber ethernet ring network, being uploaded to operator station by operation level optical fiber ethernet ring network again monitors, start stop operation order simultaneously and emergent management order are issued to transhipment control station by operation level optical fiber ethernet ring network and controlled stage optical fiber ethernet ring network by operator station, export to cool furnace distributing device.The approximately 700 sintering mineral aggregates of spending that spin out from cool furnace distributing device below funnel and chute enter cool furnace and carry out cooling and heat-obtaining:
The mainly material level to sintering feed in stove of described cool furnace automatic control system, pressure and furnace temperature are controlled.Comprise: the cool furnace chamber that prestores, cooling chamber, the vibra feeder of below, the air blast of bottom, the air-introduced machine of cool furnace bottom, flue and on various valves etc.The cool furnace top, chamber that prestores is provided with material-level detecting device, builds material level PID controller, according to the material level signal collecting, regulates frequency and the amplitude of cool furnace below vibra feeder, changes the size of cool furnace load, and then controls cool furnace material level.Id-motor configuration frequency converter and the frequency PID controller of cool furnace bottom, regulate the adjustable cool furnace internal pressure of rotation speed of fan, prestore chamber top of cool furnace is provided with pressure sensor, jointly form negative pressure controller with air-introduced machine and fans entrance control valve, the micro-vacuum state of chamber at-200Pa ensures to prestore.Blower motor configuration frequency converter and the frequency PID controller of cool furnace bottom, regulate cold blast rate in the adjustable cool furnace of rotation speed of fan, thereby temperature in regulating stove, vibra feeder below is provided with temperature sensor, with air blast and the common formation temperature controller of two blinds control valves of fan outlet, ensure that the sintering deposit drop temperature of cool furnace is controlled at below 120 DEG C.All signals of cool furnace system, measuring point, operation conditions parameter collected enter in cool furnace control station, carry out after the parameter computing in each loop and control program select, output command is to field apparatus.Simultaneously, all parameters of cool furnace system upload onto the server by controlled stage optical fiber ethernet ring network, being uploaded to operator station by operation level optical fiber ethernet ring network again monitors, start stop operation order and emergent management order are issued to cool furnace control station by operation level optical fiber ethernet ring network and controlled stage optical fiber ethernet ring network by operator station, export to distributing device.Sintering deposit completes the heat exchange of sintering deposit and cooling-air at cooling chamber, enter in cold ore deposit transhipment operation:
The cool furnace chamber of prestoring of above-mentioned cool furnace automatic control system is also provided with detection of gas flow rate element, coordinates and regulates the chamber siphunculus wind flow that prestores, and then control the cool furnace chamber pressure that prestores for same annular air channel air amount adjustable valve.
Cold ore deposit transhipment automatic control system of the present invention comprises: the mechanical, electrical sub-skin band scale ﹑ hyperthermia radiation meter of belt conveying, overtemperature watering device.Belted electronic balance carries out consecutive weighings to sintering deposit; the deviate of weighing value and setting value feedovers to vibra feeder, and ore discharge amount is controlled in stable range of set value, exceedes setting value above in limited time when hyperthermia radiation meter detects sintering deposit temperature; start water injector cooling, protection belt feeder.Transhipment control station gathers conveyer electric current, cold ore deposit temperature, and the parameters such as cold ore deposit load, control station is compared in temperature control loop, and when overtemperature, output enabling signal is to water injector.Cold ore deposit ore discharge amount is sent into cool furnace control station by network and is removed to control vibra feeder.The parameters such as all electric current, temperature, yield upload onto the server by controlled stage optical fiber ethernet ring network, being uploaded to operator station by operation level optical fiber ethernet ring network again monitors, start stop operation order simultaneously and emergent management order are issued to transhipment control station by operation level optical fiber ethernet ring network and controlled stage optical fiber ethernet ring network by operator station, export to ribbon conveyer.
On the overtemperature watering device of above-mentioned cold ore deposit transhipment automatic control system, dispose pressure transmitter, configuration pressure P ID controller, coordinates and regulates watering pressure for same feed-regulating valve, and then controls the cold ore deposit of output temperature.
Described waste heat boiler automatic control system comprises: the two pressure boilers of two temperature, boiler feed pipe, feed pump, boiler steam pipe, the equipment compositions such as boiler-steam dome.Feedwater piping is established flow sensor, jet chimney is established flow sensor, boiler-steam dome is established level sensor, adopt water level cascade PID controller, water level signal and given signal compare, steam flow is as feedforward amount, and PID controller is opened by controlling feed-water valve, in waste heat boiler, supplies water management waste heat boiler water level.Waste heat boiler control station gathers the parameters such as flow, water level, valve position feedback, and waste heat boiler control station is compared after calculating at each control loop, and output signal, to penstock, is controlled thereby realize.The parameters such as all flow, water level, valve position feedback upload onto the server by controlled stage optical fiber ethernet ring network, being uploaded to operator station by operation level optical fiber ethernet ring network again monitors, start stop operation order simultaneously and emergent management order are issued to waste heat boiler control station by controlled stage optical fiber ethernet ring network and operation level optical fiber ethernet ring network by operator station, export to each valve.
The boiler steam pipe of above-mentioned waste heat boiler automatic control system is provided with temperature sensor and spray desuperheating valve, and configuration temperature PID controller, controls spray desuperheating valve opening, and then control vapor (steam) temperature.
Described steam turbine automatic control system comprises: turbine controller, and condenser well, condenser is mended demineralized water control valve, condenser recirculation control valve, the equipment such as condenser pump.Turbine controller gathers steam turbine rotating speed, the signal composition cascade PID control loops such as power and steam pressure, and result is exported to electric liquid control valve, thereby controls the throttle flow of main steam, makes turbine generator system stable output power at set-point.Water in Condenser Well Water Level, higher than setting value, is opened condenser pump, by recycling and mend the adjusting of demineralized water control valve, Water in Condenser Well Water Level is stabilized in given range simultaneously.Steam turbine control station gathers pressure, water level, and water pump operation state, the parameters such as valve position feedback, control station is compared after calculating at each control loop, and output signal, to valve, is controlled thereby realize.All pressure, water level, the parameters such as valve position feedback upload onto the server by network, being uploaded to operator station by network again monitors, start stop operation order simultaneously and emergent management order are issued to steam turbine control station by network with by operator station, export to each valve, motor.

Claims (3)

1. stove cold sinter cogeneration automatic control system, is characterized in that: the multiple field control stations that comprise, hot ore deposit transhipment automatic control system, cool furnace charging automatic control system, cool furnace automatic control system, cold ore deposit transhipment automatic control system, waste heat boiler automatic control system, steam turbine automatic control system, server, operator station;
Described multiple field control stations comprise transhipment control station, cool furnace control station, control station between waste heat boiler control station and steam turbine, transhipment control station control hot ore deposit transhipment automatic control system and cold ore deposit transhipment automatic control system, cool furnace control station control cool furnace charging automatic control system and cool furnace automatic control system, waste heat boiler control station control waste heat boiler automatic control system, control station control steam turbine automatic control system between steam turbine;
Described hot ore deposit transhipment automatic control system is controlled hot ore deposit transporting velocity, and it comprises take out device, chain board conveying mechanism; Transhipment control station gathers current of electric and the rotary speed parameter of chain board conveying mechanism, make after contrast with the sintering deposit load collecting, adjust hot ore deposit transporting velocity according to comparing result, given parameters is outputed to frequency converter, configure of frequency AC Drive has frequency PID controller, change at 0.20m/s~0.30m/s thereby control chain scraper conveyor rotating speed, meet the delivery requirements of sintering deposit under different production status, chain scraper conveyor by the sintering deposit of 650-750 degree left and right send in cool furnace, carry out cooling;
Described cool furnace charging automatic control system is controlled cloth speed, and it comprises cool furnace distributing device, bar type push-pull valve, water-cooling system and lubricating system, the motor of cool furnace distributing device adopts frequency converter configuration frequency PID controller, control the inhomogeneities that cool furnace distributing device rotating speed is produced to adapt to sintering deposit, cool furnace charging automatic control system gathers the fault message of cool furnace, in the time breaking down, close bar type push-pull valve, cool furnace fire door is sealed completely, in water-cooling system and lubricating system, be furnished with cooling-water temperature sensor, water sensor, level sensor and fuel level sensor, for carrying out chain control with cool furnace distributing device, the sintering mineral aggregates of 650 degree-750 degree that spin out from cool furnace distributing device below funnel and chute enter cool furnace and carry out cooling and heat-obtaining,
Material level, pressure and the furnace temperature of described cool furnace automatic control system to sintering feed in cool furnace controlled, and comprises cool furnace the prestore vibra feeder of chamber, cooling chamber, cool furnace below, the air blast of bottom, air-introduced machine, flue and the various by-pass valve control thereof of cool furnace bottom, the cool furnace top, chamber that prestores is provided with material-level detecting device, build material level PID controller, the material level signal collecting according to material-level detecting device, regulate frequency and the amplitude of the vibra feeder of cool furnace below, change the size of stove load, change and control stove material level, id-motor configuration frequency converter and the frequency PID controller of cool furnace bottom, regulate the adjustable cool furnace internal pressure of rotation speed of fan, prestore chamber top of cool furnace is provided with pressure sensor, jointly form negative pressure controller with air-introduced machine and fans entrance control valve, ensure the cool furnace micro-vacuum state of chamber at-200Pa that prestore, blower motor configuration frequency converter and the frequency PID controller of cool furnace bottom, regulate cold blast rate in the adjustable cool furnace of rotation speed of fan, thereby temperature in regulating stove, vibra feeder below is provided with temperature sensor, with air blast and the common formation temperature controller of two blinds control valves of fan outlet, the sintering deposit drop temperature that ensures cool furnace is controlled at below 120 DEG C, sintering deposit completes the heat exchange of sintering deposit and cooling-air at cooling chamber, enter in cold ore deposit transhipment operation,
Described cold ore deposit transhipment automatic control system comprises the mechanical, electrical sub-skin band scale ﹑ hyperthermia radiation meter of belt conveying and overtemperature watering device, belted electronic balance carries out consecutive weighings to sintering deposit, the deviate of weighing value and setting value feedovers to vibra feeder, ore discharge amount is controlled in stable range of set value, when detecting sintering deposit temperature, hyperthermia radiation meter exceedes setting value above in limited time, start water injector cooling, protection belt feeder;
Described waste heat boiler automatic control system comprises that the two pressure boilers of two temperature, boiler feed pipe, feed pump, boiler steam pipe, boiler-steam dome, feedwater piping are established flow sensor, jet chimney establishes flow sensor and boiler-steam dome is established level sensor, waste heat boiler inner sensor all adopts water level cascade PID controller, waste heat boiler automatic control system compares water level signal and given signal, steam flow is as feedforward amount, and controller is by controlling feed-water valve aperture control boiler water level;
Described steam turbine automatic control system comprises turbine controller, condenser well, condenser is mended demineralized water control valve, condenser recirculation control valve and condenser pump, turbine controller gathers steam turbine tach signal, power signal and steam pressure signal composition cascade PID control loop, and the signal results collecting is exported to condenser and mend water in dust removal control valve, thereby control the throttle flow of main steam, make turbine generator system stable output power in setting value, Water in Condenser Well Water Level is higher than setting value, open condenser pump, recycle the adjusting of control valve and condenser benefit demineralized water control valve by condenser simultaneously, Water in Condenser Well Water Level is stabilized in setting range.
2. stove cold sinter cogeneration automatic control system as claimed in claim 1, it is characterized in that: described field control station is provided with in multiple switch boards, switch board and comprises signal isolated loop, Surge suppression loop, and analog input module, thermal resistance signal are changed the remote communication module of module, analog output module, switching value inputting modular unit, switching value output module and redundancy.
3. stove cold sinter cogeneration automatic control system as claimed in claim 2, it is characterized in that: the redundancy communication module of described field control station by the fieldbus of redundancy and main redundant manipulator in cabinet be connected from redundant manipulator, main redundant manipulator and working asynchronously from redundant manipulator, main redundant manipulator and being connected to respectively the controlled stage optical fiber ethernet ring network of redundancy from redundant manipulator, same engineer station, server, between Historical archiving server and other controller, carry out remote transfer of data, between server and operator station, utilize operation level optical fiber ethernet ring network to carry out exchanges data, make operation level equipment and controlled stage equipment in the different network segments.
CN201410189325.9A 2014-05-07 2014-05-07 Stove cold sinter cogeneration automatic control system Active CN104034174B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135900A (en) * 2015-08-12 2015-12-09 中冶长天国际工程有限责任公司 Method and device for controlling temperature of outlet of circular cooler
CN106203777A (en) * 2016-06-28 2016-12-07 武汉凯瑞达通工程设计有限公司 A kind of engineering information management system
CN106766943A (en) * 2017-01-17 2017-05-31 华北水利水电大学 A kind of vertical cooling furnace apparatus and cooling means of sintering deposit
CN106959007A (en) * 2017-04-28 2017-07-18 大连重工机电设备成套有限公司 Turnbarrel shaft furnace process control system
CN107504822A (en) * 2017-09-29 2017-12-22 中冶焦耐(大连)工程技术有限公司 A kind of sintering deposit highly efficient cooling device
CN107941013A (en) * 2017-12-22 2018-04-20 中冶焦耐(大连)工程技术有限公司 A kind of upright cooling furnace bottom of sinter multicell goes out formula feeding system
CN107957200A (en) * 2017-12-22 2018-04-24 中冶焦耐(大连)工程技术有限公司 A kind of sinter multicell uprightly cools down furnace side and goes out formula feeding system
CN108168309A (en) * 2017-12-22 2018-06-15 中冶焦耐(大连)工程技术有限公司 A kind of method of sinter continuous feeding into multiple upright cooling furnaces
CN108571845A (en) * 2017-03-10 2018-09-25 深圳市芭田生态工程股份有限公司 Fertilizer cooling means and system
CN109322714A (en) * 2018-09-30 2019-02-12 西安陕鼓动力股份有限公司 SHRT unit frequency-conversion rises the duty control method of steam turbine in Rotation Process
CN117556332A (en) * 2024-01-11 2024-02-13 北京佰能蓝天科技股份有限公司 Heating furnace waste heat utilization management method, system and storage medium based on Internet of things

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4284404A (en) * 1979-02-05 1981-08-18 Genevois Jean L Continuous ring baking furnaces of the Hoffmann type
CN101576348A (en) * 2008-04-29 2009-11-11 联合科技(股份有限)公司 Furnace control system and method thereof
CN102012167A (en) * 2010-10-29 2011-04-13 南京凯盛开能环保能源有限公司 System and method for power generating by jointly recovering waste heat of flue gas of sintering machine and exhaust gas of cooling machine
CN203259026U (en) * 2013-04-15 2013-10-30 中信重工机械股份有限公司 Efficient sintering ore waste heat recovery and electricity generation device with griddle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4284404A (en) * 1979-02-05 1981-08-18 Genevois Jean L Continuous ring baking furnaces of the Hoffmann type
CN101576348A (en) * 2008-04-29 2009-11-11 联合科技(股份有限)公司 Furnace control system and method thereof
CN102012167A (en) * 2010-10-29 2011-04-13 南京凯盛开能环保能源有限公司 System and method for power generating by jointly recovering waste heat of flue gas of sintering machine and exhaust gas of cooling machine
CN203259026U (en) * 2013-04-15 2013-10-30 中信重工机械股份有限公司 Efficient sintering ore waste heat recovery and electricity generation device with griddle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135900A (en) * 2015-08-12 2015-12-09 中冶长天国际工程有限责任公司 Method and device for controlling temperature of outlet of circular cooler
CN106203777A (en) * 2016-06-28 2016-12-07 武汉凯瑞达通工程设计有限公司 A kind of engineering information management system
CN106766943A (en) * 2017-01-17 2017-05-31 华北水利水电大学 A kind of vertical cooling furnace apparatus and cooling means of sintering deposit
CN106766943B (en) * 2017-01-17 2019-04-09 华北水利水电大学 A kind of vertical cooling furnace apparatus of sinter and cooling means
CN108571845A (en) * 2017-03-10 2018-09-25 深圳市芭田生态工程股份有限公司 Fertilizer cooling means and system
CN106959007A (en) * 2017-04-28 2017-07-18 大连重工机电设备成套有限公司 Turnbarrel shaft furnace process control system
CN107504822A (en) * 2017-09-29 2017-12-22 中冶焦耐(大连)工程技术有限公司 A kind of sintering deposit highly efficient cooling device
CN107957200A (en) * 2017-12-22 2018-04-24 中冶焦耐(大连)工程技术有限公司 A kind of sinter multicell uprightly cools down furnace side and goes out formula feeding system
CN108168309A (en) * 2017-12-22 2018-06-15 中冶焦耐(大连)工程技术有限公司 A kind of method of sinter continuous feeding into multiple upright cooling furnaces
CN107941013A (en) * 2017-12-22 2018-04-20 中冶焦耐(大连)工程技术有限公司 A kind of upright cooling furnace bottom of sinter multicell goes out formula feeding system
CN109322714A (en) * 2018-09-30 2019-02-12 西安陕鼓动力股份有限公司 SHRT unit frequency-conversion rises the duty control method of steam turbine in Rotation Process
CN109322714B (en) * 2018-09-30 2021-07-06 西安陕鼓动力股份有限公司 Load control method of steam turbine in variable-frequency rotation-speed-increasing process of SHRT unit
CN117556332A (en) * 2024-01-11 2024-02-13 北京佰能蓝天科技股份有限公司 Heating furnace waste heat utilization management method, system and storage medium based on Internet of things
CN117556332B (en) * 2024-01-11 2024-03-15 北京佰能蓝天科技股份有限公司 Heating furnace waste heat utilization management method, system and storage medium based on Internet of things

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