CN106834609A - A kind of AOD furnace is fascinated control system - Google Patents
A kind of AOD furnace is fascinated control system Download PDFInfo
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- CN106834609A CN106834609A CN201710148452.8A CN201710148452A CN106834609A CN 106834609 A CN106834609 A CN 106834609A CN 201710148452 A CN201710148452 A CN 201710148452A CN 106834609 A CN106834609 A CN 106834609A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Fascinated control system the invention discloses a kind of AOD furnace, including PLC system, frequency converter, motor, oxygen lance lifting system, plate washer slag system, using the control mode of semiclosed loop vector controlled, the PLC system includes position sensor, pressure transmitter, flow sensor, failure output；The PLC system by with oxygen lance lifting system, the cooperative cooperating of slag trap system, complete thermometric, molten iron discharging, enter molten iron, reset, the task of fascinating of link of skimming；The oxygen lance lifting system, slag trap jacking system belongs to the subsystem at the same level in whole ferroalloy smelting DCS together with tilting system, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer, body of heater of the present invention fascinate control system design with realize, improve production efficiency, the time of fascinating of body of heater will shorten as far as possible, while the stable state accuracy of position control is improved.
Description
Technical field
The present invention relates to improved AOD furnace, specifically a kind of AOD furnace is fascinated control system.
Background technology
At present, argon-oxygen-decarburizing process (AOD methods) be produce stainless steel main technique, AOD methods with its low cost, it is easy to operate,
The features such as efficiency high and favored, but refractory consumption rate is high, lining durability is low, and the production of AOD methods is annoying always, furnace lining
Life-span is a comprehensive index, and it is not only relevant with Furnace construction design, the performance of refractory material and use technique, and
It is closely related with smelting process level, the control of each operating parameter, plant maintenance situation etc..
In AOD smelting processes, because the air supply intensity of air supply system, flow become with the change of different smelting times
Change so that blowing gas in smelting process to furnace lining deteriorate and the aspect such as stirring of molten steel plays an important role, influence
Dorsad inclined factor mainly has supply gas pressure, flow and smelting process to body of heater, in body of heater dorsad tilting procedure, angle of inclination
It is whether suitable, can often be reflected by the erosion condition of backup lining brick around air port and lining durability, bad inclines
Rake angle may accelerate the erosion of air port periphery furnace lining, although many aspects of body of heater dorsad inclined angle and smelting process
Suffer from the relation of complexity, but the angle of tilting furnace is air supply system pressure is certain, in smelting process, and molten iron flow is good
Oneself specific change is mainly there is in the case of good between the flow of air supply system and the muzzle velocity of spray gun and is associated
Relation, understands these Changing Patterns, using the regulation and control method of science, according to each stage in smelting process to supply gas pressure, stream
The requirement of amount etc. carries out the effective action of each relevant device, it is ensured that the accuracy at body of heater dorsad angle of inclination, so as to effectively subtract
The few influence of gas and molten steel mechanical erosion to lining durability.
The content of the invention
Regarding to the issue above, the present invention provides a kind of AOD furnace and fascinates control system, and the equipment of fascinating gives when AOD furnace is fascinated
Tilting Torque be divided into two parts, a part is that body of heater is fascinated, and another part is that stove liquid is fascinated.
To achieve these goals, the present invention is using technical scheme：A kind of AOD furnace is fascinated control system, including PLC systems
System, frequency converter, oxygen lance lifting device, shelves slag plate device；
PLC system includes PLC, positioner, pressure controller, flow controller；
Oxygen lance lifting device includes motor, shaft coupling, decelerator, temperature sensor, velocity sensor, flow sensing
Device, position sensor；
Shelves slag plate device includes slag trap, pressure transmitter；
Using the control mode of semiclosed loop vector controlled；PLC and expansion module connection co- controlling frequency converter, PLC's is defeated
The connection frequency converter of exit port one pin one, the connection frequency converter of output port two pin two of PLC, the output port three of PLC is connected
Control auxiliary reclay, realizes the control to electromagnetic brake, and the input port of PLC connects the output end of oxygen lance lifting device respectively
The output port of mouth and slag damper device, the connection temperature sensor of input port one of PLC, realizes the input of temperature signal, PLC
Input port two and PLC the connection speed sensor of input port three, realize molten iron discharging signal and entering the input of molten iron signal,
The connection SR of input port four of PLC, the connection traffic sensor of input port five of PLC, realization is skimmed the input of signal,
The link position sensor of input port six of PLC, realizes the input of oxygen rifle promotion signal, the connection pressure of input port seven of PLC
Transmitter, realizes the input of shelves slag plate signal in place, the connection encoder of input port eight of PLC, wherein PLC and auxiliary reclay
Be connected, when tilting furnace in place when PLC the power supply of frequency converter will be cut off by controlling auxiliary reclay, while start electromagnetism embrace
Lock；
PLC system by with oxygen lance lifting device, the cooperative cooperating of slag damper device, complete thermometric, molten iron discharging, enter iron
Water, reset, the task of fascinating of link of skimming；
Oxygen lance lifting device, slag trap lowering or hoisting gear belong to same in whole ferroalloy smelting DCS together with tilting system
Level subsystem, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer；
The Tilting Torque that the equipment of fascinating gives when AOD furnace is fascinated can be distributed into two parts, and a part is that body of heater is fascinated,
Another part is that stove liquid is fascinated, and substep is carried out during specific calculating and is analyzed, the method that superposition is then concentrated again, and its step is:
(1) center of gravity of body of heater (part such as including furnace shell, permanent thermal insulation layer, fire brick layer, furnace bottom inserts) is calculated,
And the Tilting Torque under all angles is obtained with this；
(2) ask for smelting the center of gravity of liquid under different angle positions during m tons of molten iron, and calculate inclining under each corner stove position
Kinetic moment；
(3) calculating is overlapped to body of heater Tilting Torque and molten iron Tilting Torque, the maximum that the body of heater that thus must send as an envoy to fascinates
Tilting Torque.
Preferably, the Tilting Torque of AOD furnace including two parts, i.e., empty stove part and molten iron part.
Preferably, flow sensor is LUGB-99, and pressure transmitter is PMC71, and the sensor of position and speed control is
ROQ425。
Preferably, the output port one of PLC is Q0.0, and the output port two of PLC is Q0.1, and the output port three of PLC is
Q0.2。
Preferably, the input port one of PLC is I0.0, and the input port two of PLC is I0.1, and the input port three of PLC is
The input port four of I0.2, PLC is I0.3, and the input port five of PLC is I0.4, and the input port six of PLC is I0.5, PLC's
Input port seven is I0.6, and the input port eight of PLC is I0.7.
Preferably, PLC is the CPU222 of S7-200 series.
Preferably, frequency converter is MM440.
Preferably, motor is the AC induction motor of 37.3kw.
Preferably, position-detection sensor is connected with the axle of motor in half-closed loop control mode.
Preferably, feedback signal is the rotating speed and angular signal of motor in semi-closed loop control system.
Preferably, expansion module is EM232.
Selected, position-detection sensor is connected with the axle of motor in half-closed loop control mode.
It is selected, PLC system by with oxygen lance lifting system, the cooperative cooperating of slag trap system completes thermometric, taps a blast furnace
Water, enter molten iron, reset, the task of fascinating of link of skimming.
Selected, oxygen lance lifting system, slag trap jacking system belongs to whole ferroalloy smelting DCS together with tilting system
In subsystem at the same level, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer.
Body of heater of the present invention fascinate control system design with realize, improve production efficiency, the time of fascinating of body of heater will use up
Amount shortens, while the stable state accuracy of position control is improved.
Brief description of the drawings
Fig. 1 is tilting system main circuit connection road；
Fig. 2 is the control system wiring diagram that fascinates；
Fig. 3 is connected circuit diagram for tilting system PLC with encoder；
Fig. 4 is PLC tilting system half-closed loop control structured flowcharts；
Fig. 5 is PLC Pitch systems position control device Principles of Regulation figure；
Fig. 6 is tilting system speed given curve and position deviation curve map；
Fig. 7 is tilting system main program flow chart.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention are included but is not limited to
The following example.
The maximum Tilting Torque of AOD furnace determines the selection of capacity motor, maximum Tilting Torque and the type of furnace and the ear of AOD furnace
Shaft position is relevant, and during AOD furnace is fascinated, molten steel is continually changing in constantly change position, Tilting Torque with turning angle,
For the type of furnace that stove uses as a servant the later stage, because furnace lining is subject to the erosion of molten steel to peel off, the type of furnace is set to change, position of centre of gravity also occurs phase
The change answered, the Tilting Torque of equipment of being fascinated when AOD furnace is fascinated can be distributed into two parts, and a part is that body of heater is fascinated, separately
A part is that stove liquid is fascinated.
Because body of heater is solid-state, its position of centre of gravity is fixed, and asking for for center of gravity can be in strict accordance with drawing by AUTOCAD pictures
Figure software carries out d solid modeling to each part, by the method for query entity characteristic, just can directly obtain each composition
Partial volume and barycentric coodinates, each part is combined according to assembly relation, again by query entity characteristic
Sky stove barycentric coodinates are obtained, the gross mass of empty stove can be obtained by calculating, corresponding sky stove Tilting Torque is also only with body of heater
The change of turning angle and change, calculate sky stove Tilting Torque using Calculating Torque during Rotary formula.
Molten iron volume profiles are continually changing with the difference of body of heater turning angle, therefore its center of gravity is also in change, this
Calculated to Tilting Torque and bring complexity, the molten iron level under each angle is measured on each angle position, intercepted identical
Volume, obtain the molten steel volume profiles under different corners, the bulk properties of interrogation model are obtained with this in determined calculation procedure
Take centroid position and rotate the arm of force, then the Tilting Torque for asking for molten iron.If the gravity of molten iron is G2θ, the weight arm of molten iron is L2θ,
The Tilting Torque of molten iron is M2θ, then M2θ=G2θ*L2θ, and then draw total Tilting Torque maximum.
The hardware circuit of AOD furnace tilting system mainly includes the design of two parts, i.e. main circuit and the design of control circuit.
Main circuit is mainly completion three phase mains, frequency converter, the connection between motor and electromagnetic brake；Control circuit is mainly realization
The connection of PLC and frequency converter, various commanding apparatuses, and encoder.
The AOD furnace fascinates control system including PLC system, frequency converter, motor, oxygen lance lifting system, plate washer slag system, adopts
With the control mode of semiclosed loop vector controlled, the PLC system includes position sensor, pressure transmitter, flow sensor；Institute
State PLC system by with oxygen lance lifting system, the cooperative cooperating of slag trap system, complete thermometric, molten iron discharging, enter molten iron, reset,
The task of fascinating of link of skimming；The oxygen lance lifting system, slag trap jacking system belongs to whole iron and closes together with tilting system
Gold smelts the subsystem at the same level in DCS, and the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer, and body of heater of the present invention inclines
The design of autocontrol system and realization, improve production efficiency, and the time of fascinating of body of heater will shorten as far as possible, while position control
Stable state accuracy is improved.
The AOD furnace is fascinated control system, including PLC system, frequency converter, oxygen lance lifting device, shelves slag plate device；PLC systems
System includes PLC, positioner, pressure controller, flow controller；Oxygen lance lifting device includes motor, shaft coupling, deceleration
Device, temperature sensor, velocity sensor, flow sensor, position sensor；Shelves slag plate device includes slag trap, pressure inverting
Device；Using the control mode of semiclosed loop vector controlled；PLC and expansion module connection co- controlling frequency converter, the output port of PLC
One connection frequency converter pin one, the connection frequency converter of output port two pin two of PLC, in the connection control of output port three of PLC
Between relay, realize control to electromagnetic brake, the input port of PLC connects the output port and gear of oxygen lance lifting device respectively
The output port of slag plate device, the connection temperature sensor of input port one of PLC, realizes the input of temperature signal, the input of PLC
The connection speed sensor of input port three of port two and PLC, realizes molten iron discharging signal and enters the input of molten iron signal, PLC's
Input port four connects SR, the connection traffic sensor of input port five of PLC, and realization is skimmed the input of signal, PLC's
The link position sensor of input port six, realizes the input of oxygen rifle promotion signal, the connection pressure inverting of input port seven of PLC
Device, realizes the input of shelves slag plate signal in place, the connection encoder of input port eight of PLC, wherein PLC and auxiliary reclay phase
Even, when tilting furnace in place when PLC the power supply of frequency converter will be cut off by controlling auxiliary reclay, while start electromagnetism embrace
Lock；PLC system by with oxygen lance lifting device, the cooperative cooperating of slag damper device completes thermometric, molten iron discharging, enters molten iron, multiple
Position, the task of fascinating of link of skimming；Oxygen lance lifting device, slag trap lowering or hoisting gear belong to whole ferroalloy together with tilting system
The subsystem at the same level in DCS is smelted, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer；Fascinated when AOD furnace is fascinated
The Tilting Torque that equipment gives can be distributed into two parts, and a part is that body of heater is fascinated, and another part is that stove liquid is fascinated,
Carry out substep during specific calculating to analyze, the method that superposition is then concentrated again, its step is:
(1) center of gravity of body of heater (part such as including furnace shell, permanent thermal insulation layer, fire brick layer, furnace bottom inserts) is calculated,
And the Tilting Torque under all angles is obtained with this；
(2) ask for smelting the center of gravity of liquid under different angle positions during m tons of molten iron, and calculate inclining under each corner stove position
Kinetic moment；
(3) calculating is overlapped to body of heater Tilting Torque and molten iron Tilting Torque, the maximum that the body of heater that thus must send as an envoy to fascinates
Tilting Torque..
Preferably, the Tilting Torque of AOD furnace including two parts, i.e., empty stove part and molten iron part.Preferably, flow is passed
Sensor is LUGB-99, and pressure transmitter is PMC71, and the sensor of position and speed control is ROQ425.Preferably, PLC's is defeated
Exit port one is Q0.0, and the output port two of PLC is Q0.1, and the output port three of PLC is Q0.2.Preferably, the input of PLC
Mouth one is I0.0, and the input port two of PLC is I0.1, and the input port three of PLC is I0.2, and the input port four of PLC is I0.3,
The input port five of PLC is I0.4, and the input port six of PLC is I0.5, and the input port seven of PLC is I0.6, the input of PLC
Mouth eight is I0.7.
Preferably, PLC is the CPU222 of S7-200 series.Preferably, frequency converter is MM440.Preferably, motor is
The AC induction motor of 37.3kw.Preferably, position-detection sensor is connected with the axle of motor in half-closed loop control mode.It is preferred that
, feedback signal is the rotating speed and angular signal of motor in semi-closed loop control system.Preferably, expansion module is EM232.It is selected
, position-detection sensor is connected with the axle of motor in half-closed loop control mode.It is selected, PLC system by with oxygen lance lifting
System, the cooperative cooperating of slag trap system, complete thermometric, molten iron discharging, enter molten iron, reset, the task of fascinating of link of skimming.
Selected, oxygen lance lifting system, slag trap jacking system belongs to whole ferroalloy smelting DCS together with tilting system
In subsystem at the same level, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer.
Such as Fig. 1 system main circuit connections road, including fuse FU101, after electric current exceedes setting for a period of time, with it certainly
The heat that body is produced makes Melt molten, so that circuit disconnects, overcurrent protection is realized to motor.
A.C. contactor main contacts 102, when 101 close, within prescribed limit, the closing of contact connects frequency conversion to electric current
Device, realizes the division control of circuit.
MM440 frequency converters 103, using the insulated gate bipolar transistor IGBT with modern advanced level as work(
Rate output device, is controlled to motor.
Electrothermal relay 104, when motor overload, overload protection is realized to motor.
Threephase asynchronous machine 105, the dragging motor in circuit is under the control of commanding apparatus with different rotating speed rotatings
So as to realize into molten iron, molten iron discharging, thermometric, sampling, the requirement of fascinating of the link such as skim.
A.C. contactor KM2 106, controls the coil of electromagnetic brake, and electromagnetic brake is in due course to motor system
It is dynamic.
As fascinate CPU222 and analog quantity spread module EM232 in control link of Fig. 2 is realized to frequency converter MM440 jointly
Control, CPU222 need 24V power supplys realize that MM440 works in vector control mode with Switching Power Supply, it realizes speed
The control of inner ring, CPU222 main function is to realize the function of positioner, in addition whole AOD furnace tilting system
The acquisition of other control instruction signals will will be realized by CPU222.
The I/O address of CPU222 is allocated as follows：
I0.0 --- thermometric；
I0.1 --- molten iron discharging；
I0.2 --- enter molten iron；
I0.3 --- reset；
I0.4 --- skim；
I0.5 --- oxygen rifle lifting finishes signal；
I0.6 --- when bundle plate signal in place；
I0.7 --- encoder input interface；
Q0.0——DIN1(MM440)；
Q0.1——DIN2(MM440)；
Q0.2 --- control auxiliary reclay (realizes the control to electromagnetic brake)；
When tilting furnace in place when PLC the power supply of frequency converter will be cut off by controlling auxiliary reclay, while start electricity
Magnetic band-type brake；Proximity switch prevents body of heater from the generation of stove accident is turned over when fascinating, when body of heater because accidental cause, it is possible to occur turning over stove
During accident, proximity switch action launching electromagnetic brake, being fascinated by the design completion AOD furnace of system main electrical scheme and control circuit is
The electrical connection of system.
In AOD furnace fascinates hardware system, used as feedback element, it realizes position to encoder ROQ425, tach signal
Detection, from its SSI signal output patterns, as shown in figure 3, integrated circuit MAX485 realizes RS485 signals with+5V numeral letters
Number mutually turn, triode realizes the mutual conversion between+5V and 24V signals, and such CPU222 can just obtain the position of body of heater
The amount of putting, for the acquisition of tach signal, is obtained using the method differentiated to position quantity, obtains rotating speed and the inclination angle of body of heater
Signal.
AOD control systems of fascinating are a typical APC control systems, and semi-closed loop control system as shown in Figure 4 enters line position
Put the closed-loop control system of detection and feedback.Go out the anglec of rotation i.e. number of turns of motor shaft by the signal detection of position sensor,
So as to derive the current physical location for performing machinery, but, position-detection sensor is connected with the axle of motor, rather than being mounted in
Perform mechanically, position control can only be on motor shaft, in semiclosed loop position control system, because driving-chain is very simple
It is single, transmission chain error and nonlinear error is greatly reduced, the non-linear factor of its closed loop is few, easily adjusts, and may be used also
Eaily to improve position control accuracy by compensating, the structure of semiclosed loop makes its execution mechanical and electrically automatic control
Part processed is relatively independent, the versatility enhancing of system.
The victor chan ge control of asynchronous motor is that alternating current generator is modeled to direct current generator, and this will be become by coordinate
The method changed derives Mathematical Modeling and direct torque equation of the asynchronous machine on by rotor field-oriented rotational coordinates,
If two phase coordinates d axles are θ with the angle of three-phase reference axis A axless, and p θs=ωdqsAngle speed for dq coordinate systems relative to stator
Degree, ωdqrAngular speed for dq coordinate systems relative to rotor.The voltage equation in three-phase static coordinate system, flux linkage equations and
Torque equation is all transformed in two-phase rotating coordinate system, can be first with 3/2 electricity for becoming stator and rotor in equation of changing commanders
Pressure, electric current, magnetic linkage and torque are all transformed on two-phase rest frame α β, then again with rotation transformation battle array C2s/2rBy these variables
Transform on two-phase rotating coordinate system dq, therefore, vector controlled is mainly made up of three parts:Vector controlled equation, coordinate transform,
The determination at rotor flux phase angle.
V as shown in Figure 5tIt is speed preheating setting time variable, StIt is position preheating setting time variable, St=0.00125* ∫
Vtdt；KspIt is the amplification coefficient of proportional amplifier；ω is output speed.Regulation process is as follows：Machine of the controller according to transmission
The presetting position of parameter and tachometer value, calculate Velocity Time characteristic curve VtWith associated St.In opening for each cycle
Velocity amplitude V during the beginningtIt is presetting to the enterprising scanning frequency degree pre-control of transmission device.The actual value S for feeding back simultaneouslyfWith StCarry out
Compare, draw deviation Δ S at that time, this deviation is multiplied by Proportional coefficient KspObtain VkIt is superimposed upon VtOn draw what ASR should have
Speed control signal.
0~t as shown in Figure 61To accelerate to start section, its rate of acceleration is am；t1~t2For maximum speed operates section, its speed
It is Vm；t2~t3It is retarding braking section, the rate of deceleration is am；t3Moment is to adjust the moment that mechanical speed is zero, and electricity is removed at the moment
Electromechanical source, while starting electromagnetic brake.
Position fixing process is as follows：
S′t=∫ Vtdt
1)0≤t≤t1
Because Vt=amt
So
2)t1＜ t≤t2
Because Vt=Vm
So
3)t2＜ t≤t3
Because Vt=Vm-am(t-t2)
So
So St=0.00125*S 't
S in institute's above formulatAs AOD furnace body of heater arrives t in the time 03Interior rotated angle.
PLC system as shown in Figure 7 by with oxygen lance lifting system, the cooperative cooperating of slag trap system completes thermometric, taps a blast furnace
Water, enter molten iron, reset, the task of fascinating of link of skimming, oxygen lance lifting system, slag trap jacking system all belongs to together with tilting system
Subsystem at the same level in whole ferroalloy smelting DCS, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer, opens
Whether beginning program, button switch is pressed, if not pressing, return starts, if pressing, judges to be pressed when SR, if pressing,
Into reset APC programs, if not pressing, lifting oxygen signal is sent to host computer, then judge whether water outlet button is pressed, if not
Press, into APC control programs, if pressing, downshift slag plate signal is given to host computer, into APC control programs, then judge
Whether in place to fascinate, if not in place, into APC control programs are entered, if in place, cutting off converter power supply, controlling electromagnetic brake,
Finishing control.
According to above-described embodiment, invention just can be well realized.
The obvious present invention is implemented and not limited by aforesaid way, as long as employing method of the present invention design and technology
The improvement of the various unsubstantialities of scheme, or it is not improved by it is of the invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (9)
1. a kind of AOD furnace is fascinated control system, it is characterised in that including PLC system, frequency converter, oxygen lance lifting device, shelves slag plate
Device；PLC system includes PLC, positioner, pressure controller, flow controller；Oxygen lance lifting device include motor,
Shaft coupling, decelerator, temperature sensor, velocity sensor, flow sensor, position sensor；Shelves slag plate device includes pushing off the slag
Plate, pressure transmitter；Using the control mode of semiclosed loop vector controlled；PLC and expansion module connection co- controlling frequency converter,
The connection frequency converter of output port one pin one of PLC, the connection frequency converter of output port two pin two of PLC, the output port of PLC
Three connection control auxiliary reclays, realize the control to electromagnetic brake, and the input port of PLC connects oxygen lance lifting device respectively
The output port of output port and slag damper device, the connection temperature sensor of input port one of PLC, realizes the defeated of temperature signal
Enter, the input port two of PLC and the connection speed sensor of input port three of PLC, realize molten iron discharging signal and enter molten iron signal
Input, the connection SR of input port four of PLC, the connection traffic sensor of input port five of PLC, realization skims signal
Input, the link position sensor of input port six of PLC realizes the input of oxygen rifle promotion signal, and the input port seven of PLC connects
Pressure transmitter is connect, the input of shelves slag plate signal in place, the connection encoder of input port eight of PLC, wherein PLC and centre is realized
Relay be connected, when tilting furnace in place when PLC the power supply of frequency converter will be cut off by controlling auxiliary reclay, while start
Electromagnetic brake；PLC system by with oxygen lance lifting device, the cooperative cooperating of slag damper device, complete thermometric, molten iron discharging, enter iron
Water, reset, the task of fascinating of link of skimming；Oxygen lance lifting device, slag trap lowering or hoisting gear are belonged to entirely together with tilting system
Subsystem at the same level in ferroalloy smelting DCS, the subsystem that fascinates carries out real-time Communication for Power by RS485 and host computer；AOD furnace is fascinated
When the Tilting Torque that gives of the equipment of fascinating can be distributed into two parts, a part is that body of heater is fascinated, and another part is to stove liquid
Fascinate, specific to carry out substep when calculating and analyze, the method that superposition is then concentrated again, its step is:
(1) center of gravity of calculating body of heater (part such as including furnace shell, permanent thermal insulation layer, fire brick layer, furnace bottom inserts), and with
This obtains the Tilting Torque under all angles；
(2) ask for smelting the center of gravity of liquid under different angle positions during m tons of molten iron, and calculate the power of fascinating under each corner stove position
Square；
(3) calculating is overlapped to body of heater Tilting Torque and molten iron Tilting Torque, the maximum that the body of heater that thus must send as an envoy to fascinates is fascinated
Torque.
2. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that the bag of the Tilting Torque of AOD furnace
Two parts are included, i.e. sky stove part and molten iron part.
3. a kind of AOD furnace according to claim 2 is fascinated control system, it is characterised in that flow sensor is LUGB-
99, pressure transmitter is PMC71, and the sensor of position and speed control is ROQ425.
4. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that PLC is S7-200 series
CPU222。
5. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that frequency converter is MM440.
6. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that motor is the exchange of 37.3kw
Asynchronous machine.
7. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that half-closed loop control mode middle position
Detection sensor is put to be connected with the axle of motor.
8. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that anti-in semi-closed loop control system
Feedback signal is the rotating speed and angular signal of motor.
9. a kind of AOD furnace according to claim 1 is fascinated control system, it is characterised in that expansion module is EM232.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710148452.8A CN106834609B (en) | 2017-03-14 | 2017-03-14 | A kind of AOD furnace is fascinated control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710148452.8A CN106834609B (en) | 2017-03-14 | 2017-03-14 | A kind of AOD furnace is fascinated control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106834609A true CN106834609A (en) | 2017-06-13 |
| CN106834609B CN106834609B (en) | 2019-03-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109521730A (en) * | 2017-09-20 | 2019-03-26 | 上海梅山钢铁股份有限公司 | The on-line calculation method of the top of the slag in a kind of ladle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049566A (en) * | 2014-07-03 | 2014-09-17 | 中冶赛迪电气技术有限公司 | Electrical drive method for safe converter tilting |
| CN206562444U (en) * | 2017-03-14 | 2017-10-17 | 许昌学院 | A kind of AOD furnace is fascinated control system |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049566A (en) * | 2014-07-03 | 2014-09-17 | 中冶赛迪电气技术有限公司 | Electrical drive method for safe converter tilting |
| CN206562444U (en) * | 2017-03-14 | 2017-10-17 | 许昌学院 | A kind of AOD furnace is fascinated control system |
Non-Patent Citations (2)
| Title |
|---|
| 党光辉等: "炉体倾动系统变频与液压控制的分析比较", 《山西冶金》 * |
| 曹跃光: "AOD炉吹气自动控制系统的设计与应用", 《冶金自动化》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521730A (en) * | 2017-09-20 | 2019-03-26 | 上海梅山钢铁股份有限公司 | The on-line calculation method of the top of the slag in a kind of ladle |
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