CN206562444U - 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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- CN206562444U CN206562444U CN201720242336.8U CN201720242336U CN206562444U CN 206562444 U CN206562444 U CN 206562444U CN 201720242336 U CN201720242336 U CN 201720242336U CN 206562444 U CN206562444 U CN 206562444U
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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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- 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
- Y02P10/25—Process efficiency
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Abstract
Fascinated control system the utility model 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 for 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, the utility model body of heater fascinates the design and realization of control system, 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 utility model is related to improved AOD furnace, and 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 cost it is low, easy to operate,
The features such as efficiency high and favored, but refractory consumption rate is high, and 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 air supply intensity, the flow of air supply system become with the change of different smelting times
Change so that blowing gas in smelting process to furnace lining deteriorate and the stirring of molten steel in terms of play 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 and lining durability of backup lining brick around air port, bad inclines
Rake angle may accelerate the erosion of air port periphery furnace lining, although body of heater dorsad inclined angle and many aspects of smelting process
Suffer from the relation of complexity, but the angle of tilting furnace is air supply system pressure is certain, molten iron flow is good in smelting process
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 rules, 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.
Utility model content
Control system, equipment of being fascinated when AOD furnace is fascinated in view of the above-mentioned problems, a kind of AOD furnace of the utility model offer is fascinated
The Tilting Torque given is divided into two parts, and a part is that body of heater is fascinated, and another part is that stove liquid is fascinated.
To achieve these goals, the utility model is using technical scheme：A kind of AOD furnace is fascinated control system, 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 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 PLC connection frequency converter of output port two pin two, PLC output port three is connected
Auxiliary reclay is controlled, the control to electromagnetic brake is realized, PLC input port connects the output end of oxygen lance lifting device respectively
The output port of mouth and slag damper device, the PLC connection temperature sensor of input port one, realizes the input of temperature signal, PLC
Input port two and PLC the connection speed sensor of input port three, realize and molten iron discharging signal and enter the input of molten iron signal,
The PLC connection SR of input port four, the PLC connection traffic sensor of input port five realizes the input for signal of skimming,
The PLC link position sensor of input port six, realizes the input of oxygen rifle promotion signal, the PLC connection pressure of input port seven
Transmitter, realizes the input of shelves slag plate signal in place, the PLC connection encoder of input port eight, 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, embraced while starting electromagnetism
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 for 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.
It is preferred that, the Tilting Torque of AOD furnace includes two parts, i.e. sky stove part and molten iron part.
It is preferred that, flow sensor is LUGB-99, and pressure transmitter is PMC71, and the sensor of position and speed control is
ROQ425。
It is preferred that, PLC output port one is Q0.0, and PLC output port two is Q0.1, and PLC output port three is
Q0.2。
It is preferred that, PLC input port one is I0.0, and PLC input port two is I0.1, and PLC input port three is
I0.2, PLC input port four are I0.3, and PLC input port five is I0.4, and PLC input port six is I0.5, PLC's
Input port seven is I0.6, and PLC input port eight is I0.7.
It is preferred that, PLC is the CPU222 of S7-200 series.
It is preferred that, frequency converter is MM440.
It is preferred that, motor is 37.3kw AC induction motor.
It is preferred that, 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.
It is preferred that, 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 for 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 passes through RS485 and host computer and carries out real-time Communication for Power.
The utility model body of heater fascinates the design and realization of control system, improve production efficiency, and body of heater fascinates the time
To shorten as far as possible, 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 that tilting system PLC is connected circuit diagram 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.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, and embodiment of the present utility model includes
But it 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, during AOD furnace is fascinated, and molten steel is continually changing in constantly change position, Tilting Torque with turning angle,
The type of furnace in later stage is used as a servant for stove, because furnace lining is peeled off by the erosion of molten steel, the type of furnace is changed, phase also occurs for position of centre of gravity
The change answered, the Tilting Torque for 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 the asking for of center of gravity can be drawn in strict accordance with drawing by AUTOCAD
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 changing, 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 ask for the Tilting Torque of 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 for link of skimming；The oxygen lance lifting system, slag trap jacking system belongs to whole iron together with tilting system and closed
Gold smelts the subsystem at the same level in DCS, and the subsystem that fascinates carries out real-time Communication for Power, the utility model stove by RS485 and host computer
Body fascinates the design and realization of control system, improves production efficiency, the time of fascinating of body of heater will shorten as far as possible, while position is controlled
The stable state accuracy of system 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, PLC output port
One connection frequency converter pin one, the PLC connection frequency converter of output port two pin two, in the PLC connection control of output port three
Between relay, realize control to electromagnetic brake, PLC input port connects the output port and gear of oxygen lance lifting device respectively
The output port of slag plate device, the PLC connection temperature sensor of input port one, 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 enter the input of molten iron signal, PLC's
Input port four connects SR, and the PLC connection traffic sensor of input port five realizes the input for signal of skimming, PLC's
The link position sensor of input port six, realizes the input of oxygen rifle promotion signal, the PLC connection pressure inverting of input port seven
Device, realizes the input of shelves slag plate signal in place, the PLC connection encoder of input port eight, 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, embraced while starting electromagnetism
Lock；PLC system by with oxygen lance lifting device, the cooperative cooperating of slag damper device, complete thermometric, molten iron discharging, enter molten iron, it is multiple
Position, the task of fascinating for link of skimming；Oxygen lance lifting device, slag trap lowering or hoisting gear belong to whole iron together with tilting system and closed
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；Incline when AOD furnace is fascinated
The Tilting Torque that dynamic equipment is given can be distributed into two parts, and a part is that body of heater is fascinated, and another part is that stove liquid is inclined
Dynamic, implementation substep is analyzed during specific calculating, the method that superposition is then concentrated again, and its step is:
(1) center of gravity of body of heater parts 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.
It is preferred that, the Tilting Torque of AOD furnace includes two parts, i.e. sky stove part and molten iron part.It is preferred that, flow is passed
Sensor is LUGB-99, and pressure transmitter is PMC71, and the sensor of position and speed control is ROQ425.It is preferred that, PLC's is defeated
Exit port one is Q0.0, and PLC output port two is Q0.1, and PLC output port three is Q0.2.It is preferred that, PLC input
Mouth one is I0.0, and PLC input port two is I0.1, and PLC input port three is I0.2, and PLC input port four is I0.3,
PLC input port five is I0.4, and PLC input port six is I0.5, and PLC input port seven is I0.6, PLC input
Mouth eight is I0.7.
It is preferred that, PLC is the CPU222 of S7-200 series.It is preferred that, frequency converter is MM440.It is preferred that, motor is
37.3kw AC induction motor.It is preferred that, 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.It is preferred that, 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 for 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 passes through RS485 and host computer and carries out real-time Communication for Power.
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, electric current is within prescribed limit, closing of contact connection frequency conversion
Device, realizes the division control of circuit.
MM440 frequency converters 103, work(is used as using the insulated gate bipolar transistor IGBT with modern advanced level
Rate output device, is controlled to motor.
Electrothermal relay 104, when motor overload, overload protection is realized to motor.
Dragging motor in threephase asynchronous machine 105, 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 for the link such as skim.
A.C. contactor KM2 106, controls the coil of electromagnetic brake, electromagnetic brake is in due course to motor system
It is dynamic.
CPU222 and analog quantity spread module EM232 in link is controlled to realize jointly to frequency converter MM440 as Fig. 2 fascinates
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, function main CPU222 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.
CPU222 I/O address 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 starting electricity
Magnetic band-type brake；Proximity switch prevents from turning over the generation of stove accident when body of heater from 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, encoder ROQ425 is as feedback element, and it realizes position, tach signal
Detection, from its SSI signal output patterns, as shown in figure 3, integrated circuit MAX485 realizes that RS485 signals are believed with+5V numerals
Number mutually turn, the mutual conversion between triode realization+5V and 24V signal, 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, still, position-detection sensor is connected with the axle of motor, rather than is mounted in
Perform mechanically, position control can only be untill 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 is mechanical to be controlled with electrically automatic
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 the angle of two phase coordinates d axles and three-phase reference axis A axles is θs, 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
All transformed to torque equation in two-phase rotating coordinate system, change commanders stator and rotor in equation can be become first with 3/2
Voltage, electric current, magnetic linkage and torque are all transformed on two-phase rest frame α β, then again with rotation transformation battle array C2s/2rThese are become
Quantitative change is changed on two-phase rotating coordinate system dq, therefore, and vector controlled is mainly made up of three parts:Vector controlled equation, coordinate becomes
Change, the determination at rotor flux phase angle.
V as shown in Figure 5tFor speed preheating setting time variable, StFor position preheating setting time variable,
KspFor the amplification coefficient of proportional amplifier；ω is output speed.Regulation process is as follows：Controller is pre- according to the machine parameter of transmission
The position of setting and tachometer value, calculate Velocity Time characteristic curve VtWith associated St.At the beginning of each cycle
Velocity amplitude VtIt is presetting to arrive the enterprising scanning frequency degree pre-control of transmission device.The actual value S fed back simultaneouslyfWith StIt is compared, obtains
Go out deviation Δ S at that time, this deviation is multiplied by Proportional coefficient KspObtain VkIt is superimposed upon VtOn draw the speed control that ASR should have
Signal.
0~t as shown in Figure 61To accelerate to start section, its rate of acceleration is am；t1~t2Section, its speed are operated for maximum speed
For Vm；t2~t3For retarding braking section, the rate of deceleration is am；t3Moment is adjustment mechanical speed at the time of be 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 for 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, and judges to press when SR, if pressing,
Into APC programs are resetted, if not pressing, lifting oxygen signal is sent to host computer, then judges whether water outlet button is pressed, if not
Press, into APC control programs, if pressing, give downshift slag plate signal 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, utility model just can be realized well.
Obvious the utility model is implemented not to be limited by aforesaid way, as long as employing method structure of the present utility model
Think and technical scheme various unsubstantialities improvement, or it is not improved by it is of the present utility model design and technical scheme directly should
For other occasions, within protection domain of the present utility model.
Claims (9)
- The control system 1. a kind of AOD furnace is fascinated, 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 PLC connection frequency converter of output port one pin one, the PLC connection frequency converter of output port two pin two, PLC output port Three connection control auxiliary reclays, realize the control to electromagnetic brake, PLC input port connects oxygen lance lifting device respectively The output port of output port and slag damper device, the PLC connection temperature sensor of input port one, realizes the defeated of temperature signal Enter, PLC input port two and the PLC connection speed sensor of input port three, realize molten iron discharging signal and enter molten iron signal Input, the PLC connection SR of input port four, the PLC connection traffic sensor of input port five, realization skims signal Input, the PLC link position sensor of input port six realizes the input of oxygen rifle promotion signal, PLC input port seven connects Pressure transmitter is connect, the input of shelves slag plate signal in place, the PLC connection encoder of input port eight, wherein PLC and centre is realized Relay is connected, when tilting furnace in place when PLC the power supply of frequency converter will be cut off by controlling auxiliary reclay, start simultaneously 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 for 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.
- The control system 2. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that the bag of the Tilting Torque of AOD furnace Two parts are included, i.e., empty stove part and molten iron part.
- The control system 3. a kind of AOD furnace according to claim 2 is fascinated, it is characterised in that flow sensor is LUGB- 99, pressure transmitter is PMC71, and the sensor of position and speed control is ROQ425.
- The control system 4. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that PLC is S7-200 series CPU222。
- The control system 5. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that frequency converter is MM440.
- The control system 6. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that motor is 37.3kw exchange Asynchronous machine.
- The control system 7. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that half-closed loop control mode middle position The axle that detection sensor is put with motor is connected.
- The control system 8. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that anti-in semi-closed loop control system Feedback signal is the rotating speed and angular signal of motor.
- The control system 9. a kind of AOD furnace according to claim 1 is fascinated, it is characterised in that expansion module is EM232.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834609A (en) * | 2017-03-14 | 2017-06-13 | 许昌学院 | A kind of AOD furnace is fascinated control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106834609A (en) * | 2017-03-14 | 2017-06-13 | 许昌学院 | A kind of AOD furnace is fascinated control system |
| CN106834609B (en) * | 2017-03-14 | 2019-03-15 | 许昌学院 | A kind of AOD furnace is fascinated control system |
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