CN102234719A - Sintering plant operating simulation system - Google Patents
Sintering plant operating simulation system Download PDFInfo
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- CN102234719A CN102234719A CN2011101011029A CN201110101102A CN102234719A CN 102234719 A CN102234719 A CN 102234719A CN 2011101011029 A CN2011101011029 A CN 2011101011029A CN 201110101102 A CN201110101102 A CN 201110101102A CN 102234719 A CN102234719 A CN 102234719A
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Abstract
The invention discloses a sintering plant operating simulation system, which comprises a power supply subsystem and a computer control subsystem, wherein the power supply subsystem provides power for a main circuit and a control circuit of sintering equipment in a normal production state, and cuts off the main circuit of the sintering equipment and separately provides power for the control circuit of the sintering equipment in an operating simulation state, and the operation of the sintering equipment is simulated through do-nothing operation of the control circuit of the sintering equipment; and the computer control subsystem is used for remotely operating control circuits of various pieces of sintering equipment and controlling the system to be in the normal production state or the operating simulation state. The sintering plant operating simulation system can improve the safety and efficiency of sintering production.
Description
Technical field
The present invention relates to the smelting iron and steel technical field, particularly relate to a kind of sintering plant The simulative running system.
Background technology
Sintering is that pulverulent material is carried out heat, the caked method of sintering under the condition of not exclusively fusing.In the smelting iron and steel technology, sintering process is very important together operation.
Existing sintering plant has on long flow path, overall single process, the flow process characteristics such as material transport equipment such as conveyor drive is many.With reference to Fig. 1, be the power supply subsystem architecture figure of existing typical sintering plant operational system.
As shown in Figure 1, AC10kV busbar voltage from the high voltage power distribution chamber connects the low chamber AC380V/220V bus of joining through primary cut-out, transformer (10kV/0.4kV), low pressure frame switch, directly is various kinds of equipment power supplies such as common electric machine, valve, frequency transformer by this AC380V/220V bus.The status signal of the isolating switch of the computer control system reception various kinds of equipment of sintering plant, contactor, thermo-relay, frequency transformer etc., and control starting outfit (contactor, frequency transformer etc.) action.The low pressure frame switch of prior art is not subjected to the control of computer control system, by operator's execute-in-place.
Adopt existing sintering plant operational system, aborning,, need confirm one by one whether it satisfies operational conditions, just can determine whether to start total system each equipment for guaranteeing the safety of operator and equipment.Examine need be predicted the stream sequence starting according to the requirement of technology with each equipment in the flow process by after entering normal startup.
In system starting process,, wait for after this equipment failure is got rid of and restarting again if certain device fails on the flowline then needs to end to start; Or start and stop to the malfunction equipment place starting, after the fault of waiting for malfunction equipment is got rid of, continue toward the upstream to start from this malfunction equipment again.
After start-up course finished, system entered the operation phase (being the production phase).In system's operation phase, if certain device fails causes when shutting down on the flowline, can interlock stops the upstream equipment of this malfunction equipment, ends to produce, and after fault handling finishes, starts from this malfunction equipment; Or select to stop total system, after the wait fault handling finishes, restart total system.
This shows that existing sintering plant operational system has following shortcoming:
1) because the equipment that relates in the sintering flow process is more, make it start preceding the inspection and confirm that the required time is longer, take the effective production time.
2) equipment failure occurs in start-up course and cause starting when ending, be actually the state that is in dry running for the equipment that has started, both wear equipment was wasted a large amount of electric energy again.
3) when system the operation phase occurs equipment failure and causes produce ending, need restarting systems or begin start-up system, the same problem of checking the long and equipment idling of acknowledging time that exists from breakpoint.
4) if the equipment starting process is not smooth, will cause the equipment repeatedly starting and stopping, all there are unsafe factor in equipment and field staff.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of sintering plant The simulative running system, strengthen the security and the efficient of SINTERING PRODUCTION.
The embodiment of the invention provides a kind of sintering plant The simulative running system, and described system comprises: power supply subsystem, computer control subsystem;
Described power supply subsystem under the ordinary production state, is the master loop and the control loop power supply of agglomerating plant; Under the dry run state, disconnect the master loop of agglomerating plant, for the control loop of agglomerating plant is powered separately, agglomerating plant is carried out dry run by the control loop blank operation of agglomerating plant;
Described computer control subsystem is used for the control loop of each agglomerating plant is carried out remote control; And Controlling System is in ordinary production state or dry run state.
Preferably, described power supply subsystem comprises: the high voltage bus voltage from the high voltage power distribution chamber connects the AC380V/220V bus through primary cut-out, transformer, low pressure frame switch;
Agglomerating plant is classified; Agglomerating plant of all categories inserts each bus section, busbar section of described AC380V/220V bus respectively by corresponding frame switch;
The frame switch of each bus section, busbar section links to each other with described computer control subsystem respectively.
Described computer control subsystem receives the status signal of the frame switch of each bus section, busbar section, and the frame switch of each bus section, busbar section is carried out remote control respectively.
Preferably, for being provided with one respectively, each frame switch detects rly.;
Described detection rly., whether have electricity, and the charged situation of each frame switch corresponding bus lines section is sent to described computer control subsystem if being used to detect each frame switch corresponding bus lines section.
Preferably, described power supply subsystem also comprises: the control power supply that is independent of main circuit power;
Described control power supply is used for when main circuit power disconnects, for the control loop of each agglomerating plant is powered separately;
Described control power supply connects the little bus of control power supply by an isolating switch; The control loop of the agglomerating plant of each bus section, busbar section correspondence links to each other with the little bus of described control power supply.
Preferably, the control loop of the agglomerating plant of each bus section, busbar section correspondence links to each other with the little bus of described control power supply by a miniature circuit breaker respectively.
Preferably, described control power supply is a uninterruptible power supply.
Preferably, described computer control subsystem controls system is in ordinary production state or dry run state, is specially:
Before Controlling System is in the dry run state, determine that the corresponding respectively frame switch of agglomerating plant of all categories is for disconnecting;
Stop before the dry run state enters the ordinary production state in Controlling System, determine that the corresponding respectively frame switch of agglomerating plant of all categories is in closure state or by disconnecting the state that switches to closure
Compared with prior art, the described sintering plant simulator of the embodiment of the invention has the following advantages:
1) in the dry run stage, because the agglomerating plant master loop is not charged, equipment does not start, so spot inspection and simulated operation can carry out synchronously, saves the production time; Simultaneously, there is not potential safety hazard yet;
2) carry out the production sequence debugging in the dry run stage, equipment is in the simulated operation pattern, does not start safety, save energy and wear equipment not, can also find in advance that the insufficient malfunction equipment of preparatory condition is also in time handled in the flow process, to avoid influencing ordinary production; Simultaneously, because equipment does not start, there is not the problem of waste electric energy and equipment attrition during handling failure.
Description of drawings
Fig. 1 is the power supply subsystem architecture figure of existing typical sintering plant operational system;
Fig. 2 is the power supply subsystem architecture figure of the sintering plant The simulative running system of the embodiment of the invention one;
Fig. 3 is the power supply subsystem architecture figure of the sintering plant The simulative running system of the embodiment of the invention two;
Fig. 4 is the control supply bay composition of the power supply subsystem of the embodiment of the invention;
Fig. 5 is the computer control subsystem architecture figure of the sintering plant The simulative running system of the embodiment of the invention;
Fig. 6 is the trapezoid logic diagram of the computer control subsystem load center section program element of the embodiment of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
In view of this, the object of the present invention is to provide a kind of sintering plant The simulative running system, strengthen the security and the efficient of SINTERING PRODUCTION.
Shortcoming at existing sintering plant operational system, set up the sintering plant The simulative running system, make that under the dry run state, the master loop of agglomerating plant is not bothered to see me out, the control loop of equipment is electricly independent, and the blank operation of the control loop by equipment is to the dry run of carrying out of agglomerating plant.
For the sintering plant The simulative running system,, at first simulate start-up operation producing the preparatory stage, because under the dry run state, the master loop of the agglomerating plant electricity of not bothering to see me out, therefore, after simulation started, agglomerating plant did not start, and can carry out spot inspection and simulated operation simultaneously to agglomerating plant; After treating that simulated operation passes through, again system is converted to the ordinary production pattern, carries out the SINTERING PRODUCTION operation.
Compared with prior art, the described sintering plant simulator of the embodiment of the invention has the following advantages:
1) in the dry run stage, because the agglomerating plant master loop is not charged, equipment does not start, so spot inspection and simulated operation can carry out synchronously, saves the production time; Simultaneously, there is not potential safety hazard yet;
2) carry out the production sequence debugging in the dry run stage, equipment is in the simulated operation pattern, does not start safety, save energy and wear equipment not, can also find in advance that the insufficient malfunction equipment of preparatory condition is also in time handled in the flow process, to avoid influencing ordinary production; Simultaneously, because equipment does not start, there is not the problem of waste electric energy and equipment attrition during handling failure.
Need to prove, can check by dry run whether the control loop of agglomerating plant is normal, and whether the site safety testing conditions of monitoring device satisfies production requirement.But because under the dry run state, agglomerating plant does not start running, so whether the dry run state is can not conversion unit itself normal.Further specify for: if, in the dry run stage, the control loop cisco unity malfunction of equipment, so the ordinary production stage, this agglomerating plant must normally start; If, equipment can be by dry run, so in the ordinary production stage, the control loop of this equipment must works better, be the just often-have-electricity startup of this equipment, still, can normally move after can starting and start, depend on also whether this equipment itself is normal, but this is not a problem to be solved in the present invention.The present invention will solve is exactly by the dry run to sintering plant, and the control loop and the site safety condition of agglomerating plant detected.
The described sintering plant The simulative running system of the embodiment of the invention need be carried out corresponding transformation to traditional power supply subsystem and computer control subsystem, enables to adapt to the requirement of simulated operation.
Concrete, in the embodiment of the invention, described power supply subsystem under the ordinary production state, is the master loop and the control loop power supply of agglomerating plant; Under the dry run state, disconnect the master loop of agglomerating plant, for the control loop of agglomerating plant is powered separately, agglomerating plant is carried out dry run by the control loop blank operation of agglomerating plant.
Described computer control subsystem is used for the control loop of each agglomerating plant is carried out remote control; And Controlling System is in ordinary production state or dry run state.
At first, the power supply subsystem is described in detail:
The power supply subsystem of the sintering plant operational system of prior art shown in Figure 1, its agglomerating plant inserts the AC380V/220V bus successively.But for sintering plant, not all agglomerating plant all is to be fit to the outage blank operation.Therefore, when setting up the sintering plant The simulative running system, need whether be suitable for blank operation according to each agglomerating plant and classify, make dissimilar agglomerating plants be in different bus section, busbar sections; The computer control subsystem is gathered the frame switch status signal of each bus section, busbar section, and the frame switch of each bus section, busbar section is carried out remote control respectively.
With reference to Fig. 2, the power supply subsystem architecture figure of the sintering plant The simulative running system that provides for the embodiment of the invention one.As shown in Figure 2, described power supply subsystem comprises: the high voltage bus voltage from the high voltage power distribution chamber connects the AC380V/220V bus through primary cut-out, transformer (10kV/0.4kV), low pressure frame switch.
In the embodiment of the invention, described high voltage bus voltage is that example describes with AC10kV.In actual applications, be not limited to AC10kV, can also be 6kV or 3kV etc. from the high voltage bus voltage of high voltage power distribution chamber.
In the sintering plant The simulative running system of the embodiment of the invention, whether be suitable for blank operation, agglomerating plant is classified according to each agglomerating plant.After the classification, agglomerating plant of all categories is connect described AC380V/220V bus by corresponding frame switch respectively.
As shown in Figure 2, according to the technical process of sintering plant, determine that whether each agglomerating plant is suitable for blank operation, classifies to agglomerating plant, make different classes of agglomerating plant be in different bus section, busbar sections, insert described AC380V/220V bus by corresponding frame switch with it respectively.
The frame switch of each bus section, busbar section links to each other with the computer control subsystem of sintering plant respectively.
Described computer control subsystem receives the status signal of the frame switch of each bus section, busbar section, and the frame switch of each bus section, busbar section is carried out remote control respectively.
In the embodiment of the invention, after the status signal of the frame switch that different bus section, busbar sections are corresponding respectively entered the computer sub-control system of sintering plant, this computer sub-control system can carry out the respective remote operation to the frame switch of different bus section, busbar sections respectively.Make that thus in the embodiment of the invention, described power supply subsystem can be selected the method for simulated operation flexibly according to dissimilar equipment.
Simultaneously, the power supply subsystem of the described sintering plant The simulative running system of the embodiment of the invention can optionally be powered respectively to each bus section, busbar section as required.Further, the on off state of the frame switch of each bus section, busbar section can also be shown on described computer control subsystem, make operator can obtain the working condition of all kinds of agglomerating plants intuitively, be beneficial to the control of operator production process.
With Fig. 2 is that example describes, and agglomerating plant can be divided into: electric machinery, valve type, frequency conversion kind equipment etc.Corresponding, bus section, busbar section can be divided into: motor section, valve section, frequency conversion section etc.At this moment, the described power supply subsystem of the embodiment of the invention inserts described AC380V/220V bus with several electric machinery equipment (being motor) by motor section frame switch 1; Several valve type equipment (being valve) are inserted described AC380V/220V bus by valve section frame switch 2; Several frequency conversion kind equipments (being frequency conversion equipment) are inserted described AC380V/220V bus by frequency conversion class framework switch 3.Simultaneously, described motor section frame switch 1, valve section frame switch 2, frequency conversion segment frames switch 3 link to each other with the computer control subsystem of described sintering plant respectively.
To system shown in Figure 2, described computer control subsystem can carry out the respective remote operation to the frame switch of each bus section, busbar section respectively, therefore, can select flexibly according to the actual needs whether each bus section, busbar section is powered.For example,, then only need closed described valve section frame switch 2, disconnect described motor section frame switch 1 and frequency conversion segment frames switch 3 gets final product if only need valve type equipment is powered.
With reference to Fig. 3, the power supply subsystem architecture figure of the sintering plant The simulative running system that provides for the embodiment of the invention two.Fig. 3 is the three wire configuration figure of power supply subsystem shown in Figure 2.
Described power supply subsystem comprises: transformer, total low pressure frame switch KJ0, n frame switch KJ1 to KJn.Described transformer one termination high voltage power distribution chamber, an end connects low-voltage bus bar (AC380V/220V bus) through described total low pressure frame switch KJ0.
Described transformer is 10kV/0.4kV.As shown in Figure 3, described transformer will be low pressure (400V) busbar voltage from high pressure (AC10kV) the busbar voltage step-down of high voltage power distribution chamber; And described low pressure (400V) busbar voltage inserted described AC380V/220V low-voltage bus bar through described total low pressure frame switch KJ0.
Described total low pressure frame switch KJ0 is used to control the power on/off of whole described AC380V/220V bus.When described total low pressure frame switch KJ0 was closed, described AC380V/220V bus powered on, when described total low pressure frame switch KJ0 disconnects, and described AC380V/220V bus outage.
Generally, in sintering plant, a lot of transformers need be set.General, for each transformer is provided with a total low pressure frame switch, corresponding to all low-voltage equipments of this transformer-supplied.
Described total low pressure frame switch KJ0 can be arranged in the incoming line cabinet.Operated by rotary motion is in first low pressure incoming line cabinet.Described total low pressure frame switch KJ0 can be by described computer control system electrically operated, also can be by operator's manual operation.
Described power supply subsystem also comprises: several frame switch, each frame switch are used for a class agglomerating plant is inserted described low-voltage bus bar.
As shown in Figure 3, described power supply subsystem can comprise n frame switch KJ1 to KJn, and wherein n is a positive integer.Described n is the classification number of the agglomerating plant of this sintering plant.Further be interpreted as, agglomerating plant is classified, a class agglomerating plant is received described AC380V/220V low-voltage bus bar by a frame switch, thereby the number of described frame switch can equal the classification number of described agglomerating plant.
By each frame switch, described low-voltage bus bar is carried out segmentation, each bus section, busbar section inserts the agglomerating plant with the corresponding classification of this bus section, busbar section respectively.
As shown in Figure 3, be that example describes with the first frame switch KJ1.For the first frame switch KJ1, the described AC380V/220V bus of one termination, its another termination be KJ1 section AC380V/220V bus.Shown in Figure 3 to connect motor with the KJ1 section be that example describes, and then KJ1 section AC380V/220V bus also can be called motor section AC380V/220V bus.
The described first frame switch KJ1 is used to control the power on/off of described KJ1 section AC380V/220V bus.When the described first frame switch KJ1 was closed, described KJ1 section AC380V/220V bus powered on, for the electric machinery agglomerating plant that this section bus is connect is powered; When the described first frame switch KJ1 disconnected, described KJ1 section AC380V/220V bus outage stopped the electric machinery agglomerating plant power supply that is connect to this section bus.
The principle of work of other frame switch is identical with described first frame switch, does not repeat them here.
And then, classify by agglomerating plant to sintering plant, various kinds of equipment is inserted corresponding bus section, busbar section by the frame switch of correspondence respectively, can be effectively that all kinds of agglomerating plants are independent.When a certain device fails, only need to disconnect with this equipment under the corresponding frame switch of classification get final product, do not need a whole set of sintering system is stopped power supply, in the time of can ensureing a certain equipment failure thus, most equipment of sintering system can also normally move, and are not subjected to the influence of malfunction equipment.
The described first frame switch KJ1 comprises: switch contact, closing coil HQ1 and breaking coil TQ1.Wherein, the described AC380V/220V bus of a termination of described switch contact, another termination KJ1 section AC380V/220V bus.
Preferably, detecting rly. for each described frame switch connects one, whether have electricity, and the charged situation of each frame switch corresponding bus lines section is sent to described calculating connected control system if being respectively applied for each frame switch corresponding bus lines section of detection.As shown in Figure 3, be respectively frame switch KJ1 to KJn and meet a detection rly. DY1 to DYn.
With the first frame switch KJ1 is that example describes.For connecing first, the described first frame switch KJ1 detects rly. DY1, wherein, the A that described first two contacts detecting rly. DY1 meet the described first frame switch KJ1 respectively mutually and N mutually, the signal output part of the described first detection rly. DY1 connects the signal input part of described computer control subsystem.
When the described first frame switch KJ1 is closed, described KJ1 section AC380V/220V bus powers on, make described first to detect two contact adhesives of rly. DY1, this moment, described computer control system can judge that according to first signal that detects rly. DY1 adhesive that receives the KJ1 section AC380V/220V bus of the described first frame switch KJ1 correspondence is charged; In like manner, when the described first frame switch KJ1 disconnects, described KJ1 section AC380V/220V bus outage, make described first two contacts detecting rly. DY1 disconnect, this moment, described computer control subsystem can judge that according to the signal that the first detection rly. DY1 that receives disconnects the KJ1 section AC380V/220V bus of the described first frame switch KJ1 correspondence is not charged.
Utilize described detection rly., the computer control subsystem of this sintering plant can be known the charged situation of each bus section, busbar section in time, accurately, and then can know the charged situation of all kinds of agglomerating plants of each bus section, busbar section correspondence, make the staff can hold the running condition of whole sintering system accurately, help administering and maintaining of SINTERING PRODUCTION.
The described power supply subsystem of the embodiment of the invention is classified to agglomerating plant according to the technical process of sintering plant, makes different classes of agglomerating plant be in different bus section, busbar sections, inserts described AC380V/220V bus by corresponding frame switch with it respectively.Make thus, in start-up course or system when the operation phase equipment failure occurring, only need to disconnect the frame switch of the corresponding classification of this malfunction equipment, make the bus section, busbar section at this malfunction equipment place stop to start or stopping running getting final product.
In the described sintering plant The simulative running system of the embodiment of the invention, described power supply subsystem further can also comprise the control power supply that is independent of main circuit power, this control power supply is used to the control loop of each agglomerating plant to power separately, when enabling to be implemented in dry run, the master loop electricity of not bothering to see me out, the control loop of agglomerating plant is independent.
With reference to Fig. 4, the control supply bay composition of the power supply subsystem of the sintering plant The simulative running system that provides for the embodiment of the invention.
As shown in Figure 4, the described The simulative running system of the embodiment of the invention, described power supply subsystem can also comprise the control power supply, this control power supply is independent of main circuit power, is used for when main circuit power disconnects, for the control loop of each agglomerating plant is powered separately.
Described control power supply connects the little bus of control power supply by an isolating switch; The control loop of the agglomerating plant of each bus section, busbar section correspondence links to each other with the little bus of described control power supply.
When the main circuit power of sintering system cuts off the power supply, not charged on the described AC380V/220V low-voltage bus bar, at this moment, closed described isolating switch, the control loop power supply of the agglomerating plant that described control power supply is each bus section, busbar section correspondence still can guarantee the agglomerating plant dry run of each bus section, busbar section correspondence.
Preferably, can one miniature circuit breaker be set respectively for each frame switch corresponding bus lines section, the control loop of the agglomerating plant of described each bus section, busbar section correspondence links to each other with the little bus of described control power supply by a miniature circuit breaker respectively.
Make thus, main circuit power outage when sintering system, when adopting the power supply of control power supply,, only need to disconnect the miniature circuit breaker corresponding and get final product with the control loop of this equipment if during a certain device fails, do not need whole piece is controlled the little bus outage of power supply, can ensure in the dry run process thus, when finding a certain equipment failure, can be only with the control loop outage of this malfunction equipment, so that overhaul, and all the other equipment can also be proceeded dry run.
When carrying out dry run, the main circuit power of the sintering system electricity of not bothering to see me out is by the control loop power supply that is each agglomerating plant of described control power supply, to guarantee and can carry out simulated operation to the control loop of each agglomerating plant.
Preferably, described control power supply can adopt UPS (Uninterruptible Power Supply, uninterruptible power supply).
With reference to Fig. 5, the computer control subsystem architecture figure of the sintering plant The simulative running system that provides for the embodiment of the invention.Described computer control subsystem comprises: control bus, active station, control station, remote I station.
As shown in Figure 5, described active station can be specially man-machine interface (Human Machine Interface, HMI).Described man-machine interface is the media that carries out mutual and message exchange between system and the user, is used to the internal form of the information that realizes and the conversion between user's acceptable form.
Described control station can be specially programmable logic controller (Programmable LogicController, PLC).In actual applications, described control station can also adopt dcs (Distributed Control System, DCS).
According to the difference of sintering system complexity, sintering plant can dispose a plurality of HMI and PLC.Described HMI is used to receive operator's operating command, shows the working order of each agglomerating plant.Described PLC can detect the state of each agglomerating plant by the I point at described remote I station, passes through the operation of each agglomerating plant of O point control simultaneously.Carry out communication by control bus between described HMI and the PLC.
To sintering system, under the dry run state, be uncharged except the AC380V/220V low-voltage bus bar in its total system, be consistent when the state of all the other electric installations and ordinary production.Make thus, under the dry run state,, will cause the agglomerating plant that is in the dry run state at whole sintering scene to start together if send electricity to the corresponding respectively frame switch of all kinds of agglomerating plants, this situation is quite dangerous, may cause the security incident of the on-the-spot person and equipment; In addition, at one time in, all devices on the AC380V/220V low-voltage bus bar starts also simultaneously may cause transformer overload, these all are not allow the situation that occurs in the SINTERING PRODUCTION.Therefore, in the embodiment of the invention, need the safety interlocking function be set at the sintering plant The simulative running system.Concrete, need satisfy following operational conditions:
1) only distinguishes under the situation of corresponding frame switch disconnection, just allow the agglomerating plant on the AC380V/220V low-voltage bus bar to carry out the systems simulation operation at all kinds of agglomerating plants;
This condition can be by realizing that for the detection rly. of each frame switch setting detect rly., described computer control system can know clearly whether each frame switch is charged by each.
2) if when the corresponding respectively frame switch of systems simulation all kinds of agglomerating plants in service leaves open position (be in closure state or by disconnecting the state that switches to closure), this sintering system stops the dry run state, is all equipment that are in the dry run and enters halted state.
Therefore, described computer control subsystem need satisfy: before Controlling System is in the dry run state, determine that the corresponding respectively frame switch of agglomerating plant of all categories is for disconnecting; Stop before the dry run state enters the ordinary production state in Controlling System, determine that the corresponding respectively frame switch of agglomerating plant of all categories is in closure state or by disconnecting the state that switches to closure.
For satisfying above-mentioned operational conditions, need in PLC, increase by a functional module, be used for the conversion and control of sintering system emulation mode and running status.Concrete, the control corresponding module is set in the PLC program operates each frame switch, for the dry run of sintering system is prepared.With reference to Fig. 6, be the trapezoid logic diagram of the computer control subsystem load center section program element of the embodiment of the invention.
As shown in Figure 6, in trapezoid logic diagram, placed in-line signal is equivalent to logical AND (AND) relation, and signal in parallel is equivalent to logical OR (OR) relation.
Wherein, application operation RUN signal, application dry run SIM signal are the internal memory points (not being subjected to the control of on-site signal) of PLC, receive the steering order that comes from HMI.Realize monitoring above-mentioned application operation RUN signal, application dry run SIM signal by the memory address of bus read-write PLC.
Need to prove that application operation RUN signal, application dry run SIM signal are pulse signals, can realize by the mode that push button is set on described HMI.
Frame switch KJ signal, bus have electric DY signal, carry out combined floodgate KA_HQ signal, carry out the remote I station that separating brake KA_TQ signal comes from the PLC system.Wherein, described frame switch KJ signal and bus have electric DY signal from input point I point; Described execution combined floodgate KA_HQ signal and execution separating brake KA_TQ signal are from output point O point.
Normal operating mode SYS_RUN signal, dry run mode SYS_SIM signal are the signals that this section program produces through logical operation.This normal operating mode SYS_RUN signal, dry run mode SYS_SIM signal will show on HMI, point out the present operation mode of agglomerating plant on the corresponding bus section, busbar section, be to be in the ordinary production operational mode, still be in simulation mode of operation.
Pattern is switched the motor control unit that stopping signal STOP will be used for dry run, also is to be produced through logical operation by this section program.
Each line command of program element shown in Figure 6 analyzed line by line is:
First row: frame switch is carried out and is closed a floodgate:
KA_HQ＝RUN?and(notKJ)and?SYS_SIM
When frame switch KJ disconnects, when system is in dry run mode SYS_SIM,, will carry out feed motion one time if application run signal RUN sends.After combined floodgate is finished, cut off closing relay output.
Second row: frame switch is carried out and is closed a floodgate:
KA_TQ＝SIM?and?KJ?and?SYS_RUN
When frame switch KJ closure, when system is in normal operating mode SYS_RUN,, will carry out a separating brake action if application simulating signal SIM sends.After separating brake is finished, cut off the output of separating brake rly..
Third and fourth row: produce normal operating mode SYS_RUN signal:
SYS_RUN＝(RUN?or?SYS_RUN)and(not?SIM)?and?KJ?andDY
Run signal RUN sends when application, if application simulating signal SIM is 0, frame switch KJ is that 1 (being in closure state), bus DY have electricity, will send normal operating mode SYS_RUN signal, the self-locking of normal operating mode SYS_RUN signal.
Five, six row: produce dry run mode SYS_SIM signal:
SYS_SIM＝(SIM?or?SYS_SIM)and(not?RUN)and(not?KJ)and(not?DY)
Run signal SIM sends when application, if application run signal RUN is 0, frame switch KJ is that 0 (being in off-state), bus DY do not have electricity, will send dry run mode SYS_SIM signal, the self-locking of dry run mode SYS_SIM signal.
Seven, eight row: the generation pattern is switched stopping signal:
Have one to have one by 0 to 1 variation by 0 to 1 variation or SYS_SIM if PLC detects SYS_RUN, it is 1 that the pattern of putting is switched the value of stopping signal STOP.
The 9th row: pattern is switched the stopping signal releasing:
If pattern stopping signal STOP is 1, will trigger the timing register of time-delay conducting in 3 seconds, it is 0 that the pattern that will be provided with after 3 seconds is switched stopping signal STOP.
More than to a kind of sintering plant The simulative running system provided by the present invention, be described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part in specific embodiments and applications all can change.In sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. a sintering plant The simulative running system is characterized in that, described system comprises: power supply subsystem, computer control subsystem;
Described power supply subsystem under the ordinary production state, is the master loop and the control loop power supply of agglomerating plant; Under the dry run state, disconnect the master loop of agglomerating plant, for the control loop of agglomerating plant is powered separately, agglomerating plant is carried out dry run by the control loop blank operation of agglomerating plant;
Described computer control subsystem is used for the control loop of each agglomerating plant is carried out remote control; And Controlling System is in ordinary production state or dry run state.
2. sintering plant The simulative running system according to claim 1 is characterized in that, described power supply subsystem comprises: the high voltage bus voltage from the high voltage power distribution chamber connects the AC380V/220V bus through primary cut-out, transformer, low pressure frame switch;
Agglomerating plant is classified; Agglomerating plant of all categories inserts each bus section, busbar section of described AC380V/220V bus respectively by corresponding frame switch;
The frame switch of each bus section, busbar section links to each other with described computer control subsystem respectively;
Described computer control subsystem receives the status signal of the frame switch of each bus section, busbar section, and the frame switch of each bus section, busbar section is carried out remote control respectively.
3. sintering plant The simulative running system according to claim 2 is characterized in that, detects rly. for each frame switch is provided with one respectively;
Described detection rly., whether have electricity, and the charged situation of each frame switch corresponding bus lines section is sent to described computer control subsystem if being used to detect each frame switch corresponding bus lines section.
4. sintering plant The simulative running system according to claim 2 is characterized in that, described power supply subsystem also comprises: the control power supply that is independent of main circuit power;
Described control power supply is used for when main circuit power disconnects, for the control loop of each agglomerating plant is powered separately;
Described control power supply connects the little bus of control power supply by an isolating switch; The control loop of the agglomerating plant of each bus section, busbar section correspondence links to each other with the little bus of described control power supply.
5. sintering plant The simulative running system according to claim 4 is characterized in that, the control loop of the agglomerating plant of each bus section, busbar section correspondence links to each other with the little bus of described control power supply by a miniature circuit breaker respectively.
6. sintering plant The simulative running system according to claim 5 is characterized in that, described control power supply is a uninterruptible power supply.
7. sintering plant The simulative running system according to claim 2 is characterized in that, described computer control subsystem controls system is in ordinary production state or dry run state, is specially:
Before Controlling System is in the dry run state, determine that the corresponding respectively frame switch of agglomerating plant of all categories is for disconnecting;
Stop before the dry run state enters the ordinary production state in Controlling System, determine that the corresponding respectively frame switch of agglomerating plant of all categories is in closure state or by disconnecting the state that switches to closure.
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| CN102678593A (en) * | 2012-05-04 | 2012-09-19 | 中冶南方工程技术有限公司 | Control system for furnace cap fan of bell type furnace |
| CN104565491A (en) * | 2014-10-23 | 2015-04-29 | 苏州市东仪自控设备有限公司 | Circuit structure for nuclear power plant fireproof valve control box system |
| CN112737097A (en) * | 2019-10-28 | 2021-04-30 | 北京金风科创风电设备有限公司 | Remote control system and method for high-voltage switch of wind generating set |
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| CN102678593A (en) * | 2012-05-04 | 2012-09-19 | 中冶南方工程技术有限公司 | Control system for furnace cap fan of bell type furnace |
| CN102678593B (en) * | 2012-05-04 | 2015-09-30 | 中冶南方工程技术有限公司 | Control system for furnace cap fan of bell type furnace |
| CN104565491A (en) * | 2014-10-23 | 2015-04-29 | 苏州市东仪自控设备有限公司 | Circuit structure for nuclear power plant fireproof valve control box system |
| CN112737097A (en) * | 2019-10-28 | 2021-04-30 | 北京金风科创风电设备有限公司 | Remote control system and method for high-voltage switch of wind generating set |
| WO2021082459A1 (en) * | 2019-10-28 | 2021-05-06 | 北京金风科创风电设备有限公司 | High voltage switch control system and method for wind turbine |
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| CN102234719B (en) | 2012-12-19 |
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