CN104773465B - Large-scale transmission master-slave control equipment of belt conveyer and operation method thereof - Google Patents
Large-scale transmission master-slave control equipment of belt conveyer and operation method thereof Download PDFInfo
- Publication number
- CN104773465B CN104773465B CN201410015660.7A CN201410015660A CN104773465B CN 104773465 B CN104773465 B CN 104773465B CN 201410015660 A CN201410015660 A CN 201410015660A CN 104773465 B CN104773465 B CN 104773465B
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- conveyer belt
- signal
- speed
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000006698 induction Effects 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 15
- 230000036461 convulsion Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 6
- 238000011897 real-time detection Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 description 18
- 230000006870 function Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/04—Control devices, e.g. for safety, warning or fault-correcting detecting slip between driving element and load-carrier, e.g. for interrupting the drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/06—Control devices, e.g. for safety, warning or fault-correcting interrupting the drive in case of driving element breakage; Braking or stopping loose load-carriers
Landscapes
- Control Of Conveyors (AREA)
Abstract
The invention relates to material conveying equipment of industrial and mining enterprises, in particular to large-scale transmission master-slave control equipment of a belt conveyer and an operation method of the equipment. The equipment comprises multiple alternating-current asynchronism motors, a conveying belt synchronously driven by the multiple alternating-current asynchronism motors, and frequency converters used for driving all the alternating-current asynchronism motors and having the same number of the alternating-current asynchronism motors, wherein one of the frequency converters is a main frequency converter; power supply input ends of all the frequency converters are connected with a power grid, and power supply output ends are connected with stator input ends of the corresponding alternating-current asynchronism motors; the alternating-current asynchronism motor connected with the main frequency converter is rigidly connected with motor shafts of the alternating-current asynchronism motors connected with the slave frequency converters; the alternating-current asynchronism motors connected with the slave frequency converters output power by constant torque; the alternating-current asynchronism motor connected with the main frequency converter is flexibly connected with the alternating-current asynchronism motors connected with the slave frequency converters; and the slave frequency converters adopts a speed control mode.
Description
Technical field
The present invention relates to industrial and mining enterprises' material transfer equipment, particularly relate to a kind of belt conveyor large-scale transmission master
Operation method from control device and this equipment.
Background technology
In the industrial and mining enterprises such as mine, metallurgy, coal, the conveying of material is very important process procedure, wherein belt
Conveyer is main conveying equipment, when the inventory being conveyed than larger when it may appear that multiple electric motors drive same belt
The kind of drive of machine.
Raising with industrial production automation degree and production-scale expansion, the length of various production pipelines and defeated
Power is sent to be continuously increased, when conveying line length and increasing to a certain degree (generally higher than 200m), just difficult using single Motor drive
To meet the requirement producing it is necessary to adopt multi- drive synchronization type of drive.In multi motor synchronous driving system, particularly respectively pass
Exist between dynamic motor in the system of certain physical connection, facts have proved, can not be using conventional negative feedback control scheme.Because
On the basis of conventional negative feedback control is built upon bias adjustment, when control object deviates set-point (as increased), by anti-
Feedback adjusts and changes controlled quentity controlled variable (reduction controlled quentity controlled variable), so that control object is returned in given range.And in multi- drive synchronization speed governing system
In system, due to there is serious coupling between each synchronous motor, the deviation of a certain driving motor rotating speed is often by this electricity
The load variations of machine cause, closely related with the rotating speed of motors other on transmission line, if at this moment routinely feedback method to this
One motor applies to adjust, will be more serious for the offspeed leading to this motor, and eventually causing whole transmission system can not normal work
Make.Thus to multi motor synchronous driving system, the high precision velocity synchronous variable-speed control how realizing driving motor is a urgency
The important topic with engineering significance to be solved.
The Synchronization Control that multistage individual motor drives is more simple, and control system problem to be solved, is according to life
The requirement of production. art, it is resolved that the synchronizing speed of motor at different levels, constitutes independent speed definite value closed-loop control system, or speed
Degree ratio closed-loop control system.The former is applied to constant speed multiple drive power and controls, and the latter is applied to differential multiple drive power and controls.
At present, most industry enterprise produces remote, high-power transmission line are all controlled using ac variable frequency speed regulation
Mode.After forming multistage synchronous driving system, two classes can be divided in terms of the annexation between motor:One class is each motor
Between separate, there is not physical connection between motor, synchronously driven using multipolar dynamo and be mainly production technology or power
Needs, the such as conticaster of steel mill, rolling mill all belong to this homochronousness and drive；Another kind of is that each motor relies on chain type transmission line
It is flexibly connected, the working condition of each motor has and influences each other, and there is serious coupling each other.
In individual motor synchronous driving system, the velocity magnitude of each motor, payload are all relatively independent, will not produce
Raw coupling, the control law of controller and control parameter also routinely single closed speed control system design in each closed loop
Consider.But, as multistage synchronous drive control system, it is only surely not simple group of multiple single close loop control circuits
Close.The feedback rotating speed of the different motor of control system reply synchronizes monitoring, and determines synchroballistic for the speed discrepancy existing
Amount compensates control.
In real system, synchronous compensator the technique first according to multiple stage motor can allow speed discrepancy to determine synchronous work
Carry, when the speed discrepancy of different motors falls in work band it is believed that system is normal synchronized, otherwise synchronize compensation and adjust
Whole, also answer controlled motor to stop and send warning when system is seriously asynchronous.
In prior art, because Belt Conveying mass flow is big, Belt Conveying distance is remote, and large-scale belt feeder length is up to several
Even more than ten kilometers of kilometer is it may occur that material windrow, belt feeder fault etc..When equipment has broken down, without and
When arrestment motor operation, the paralysis of equipment can be caused, serious meeting leads to the large area of equipment to be keeped in repair, this just give produce
Enterprise brings sizable service work and regular maintenance burden.
The deficiency stated by above-mentioned buddhist, active demand one kind can belt protection equipment, when belt feeder breaks down, in time
Stop motor.
Content of the invention
For the deficiency in above-mentioned technology, the invention provides a kind of belt conveyor large-scale transmission master ＆ slave control equipment and
Its operation method.
For solving above-mentioned technical problem, the present invention is realized by below scheme：A kind of large-scale transmission of conveyer belt conveyer
Master ＆ slave control equipment, this equipment includes multiple AC induction motors, by the synchronously driven conveyer belt of some AC induction motors, also
Including each AC induction motor of the driving frequency converter equal with AC induction motor quantity；Frequency conversion based on wherein one frequency converter
Device, the power input of each frequency converter is connected with electrical network, and power output end is defeated with the stator of corresponding AC asynchronous motor
Enter end to be connected；The AC induction motor being connected with primary transducer and the motor shaft of the AC induction motor being connected with from frequency converter
It is rigidly connected, the AC induction motor being connected with from frequency converter exports power with constant moment of force；Or the exchange being connected with primary transducer
Asynchronous machine and the AC induction motor being connected with from frequency converter adopt flexible connection, the alternating current asynchronous electricity being connected with from frequency converter
Machine adopts speed control mode；The inductor of detection motor speed is respectively equipped with equipment, detects conveyer belt transporting velocity
Inductor, the inductor of detection reductor oil temperature, the inductor of detection bowl temperature, described primary transducer adopts with from frequency converter
Optical fiber link is attached communicating, and above-mentioned any one frequency converter is convertible into primary transducer, by be connected with from frequency converter
One digital input end of AC induction motor or communication modes are completing the free switching between speeds control and direct torque.
Further, described one kind at least including that gear connects, chain connects that is rigidly connected.
A kind of operation method of the large-scale transmission master ＆ slave control equipment of conveyer belt conveyer, the method comprises the following steps：
1), primary transducer starting up, primary transducer parameter setting finishes, PLC programming and human-machine interface configuration after the completion of,
By PROFIBUS network by download program to PLC, converter parameter is downloaded to each frequency converter；
2) before, running each frequency converter for the first time, the static state of the AC induction motor being respectively attached thereto from frequency converter
And Dynamic Identification, speed link finely tunes in actual motion；
3), before system startup, primary transducer checks whether all protectors are normal, detect biography by each sensor first
Send the various signals with conveyer, from the status signal of frequency converter, connect the permission enabling signal of conveyer belt, above-mentioned each letter in front and back
Number fully enter inside PLC；Each signal at least includes dragline emergency stop switches signal, smoke signal, coal piling signal, indulges and tear letter
Number, offset signals, frequency converter ready signal, cascading conveyors start interlocking signal.
4), primary transducer, each from frequency converter, each AC induction motor ready after, start conveyer belt, primary transducer
Send operation restricted speed signal, conveyer belt alarm light along the line flashes 10 seconds, terminates rear primary transducer and starts AC induction motor first
Cooling fan, reductor cooling fan, start releasing of brake band-type brake, feed back to when brake reaches one reach a signal to
PLC, it is necessary to be that three brakes all unclamp and put in place, now PLC starts each frequency converter, inputs given frequency in touch-screen, from
The run signal output frequency that PLC gives pressed by frequency converter, controls the AC induction motor being connected with from frequency converter to press given " S "
Shape curve soft start；
5), at the uniform velocity rise within the acceleration time setting from frequency converter, conveyer belt reaches to start during normal speed and finishes,
PLC passes through inductor real-time detection line speed and drum speed, when the two speed difference exceedes setting, stops in emergency,
And send skidding alarm signal；
6), when, stopping, slow down first and stop, from frequency converter, confirming all to shut down from frequency converter feedback signal, detection passes
Tape speed is sent to be reduced to startup brake, the motor shaft of the AC induction motor that locking is connected when 0 with from frequency converter, parking finishes；
7), conveyer belt is normal start after, the state of each protector of each corresponding inductor real-time detection conveyer belt, exchange are different
Electric current/the torque of step motor, reductor oil temperature, bowl temperature.
The operation method of conveyer belt conveyer large-scale transmission master ＆ slave control equipment also includes error protection, concrete protected mode
As follows：
1), when there being emergency episode artificially to trigger jerk, PLC control all from frequency converter jerk, brake action immediately
The motor shaft of the AC induction motor that locking is connected with from frequency converter implements Brake stop, is stopped, by accident in the way of the fastest
Infringement is reduced to minimum；
2), reductor oil temperature or bowl temperature exceed height and prescribe a time limit, and PLC only sends alarm signal and do not shut down, touch-screen meeting
Display alarm, temperature continue to be increased beyond high prescribe a time limit, PLC sends fault-signal orderly shutdown；
3), occur to report fault orderly shutdown when conveyer belt sideslip alarm, continuous 10 seconds of conveyer belt sideslip；
4) fault orderly shutdown will be reported when, coal piling, smog occurring, skidding；
5), brake malfunctions reach jerk during dropout from frequency converter；
6), under multiple stage frequency converter linkage status, wherein one frequency converter stops in emergency when breaking down, to ensure not damage
Other frequency converters；
7), detection line speed is reduced to brake when 0；
8), when downstream conveyor and when the electrical fault that is connected with conveyer belt is stopped, fault orderly shutdown will be reported, prevent
Windrow accident.
The invention has the beneficial effects as follows：The present invention according to the load properties of multistage synchronous driving system, to different structure
The control of multistage synchronous driving system is studied, and particularly uses intelligent control method, by PLC frequency converter to synchronous drive
Driving motor in dynamic system is implemented speed sync and is compensated and Load balanced control, has reached high-precision synchronous variable-speed.Simultaneously
Also speed regulating control is synchronized to different many motors actual transmission lines with principal and subordinate's configuration of programmable controller etc., achieve
Effect well.The present invention is applied to belt conveyor multiple electric motors and controls, and frequency converter uses Siemens low voltage frequency converter G150
With medium voltage frequency converter GM150 and Li Dehuafu frequency converter, PLC adopts S7-300, and communication adopts PROFIBUS fieldbus.Motor
1,2,3 can be used, or even multiple stage, stretch as needed and extend it is ensured that multiple electric motors press same speed sync operation,
And output current mean allocation, load balancing, to reach the purpose of energy-conservation.
The software that 1.PLC frequency converter is installed is fully integrated, is integrated with PLC, man-machine interface under SIMATIC Manager platform
And frequency converter.
2. the software that PLC frequency converter of the present invention is installed can run under several operation systems.
3. various software instrument, type selecting, programming configuration, debugging, energy saving calculation are provided.
4. multiple control modes V/F curve, closed-loop vector, closed-loop speed, closed loop torque.
5. multiple electric motors Synchronization Control, makes equipment more operate steadily, reliability, energy-conservation.
6. perfect belt monitoring and protection system.
7. Chinese Man-machine Interface, display is abundant directly perceived, easy to operate.
Brief description
Fig. 1 follows the torque reference signal schematic representation of main frame for slave of the present invention.
Fig. 2 follows the speed preset signal schematic representation of main frame for slave of the present invention.
Fig. 3 be connected with frequency converter for 3 motors of the embodiment of the present invention after operation schematic diagram.
Fig. 4 is the conticaster synchronous control system block diagram in the embodiment of the present invention 3.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Master/slave function designs for many transmission application, and wherein system is by multiple transducer drives, motor shaft 4 simultaneously
Intercoupled together by gear, chain or conveyer belt 5 etc..Due to this master/slave control function, load can uniformly divide
Fit between each gear unit.Generally, main frame is typical speeds control, and other gear units follow the torque of main frame
Or speed preset.
Embodiment 1：A kind of large-scale transmission master ＆ slave control equipment of conveyer belt conveyer, this equipment includes multiple alternating current asynchronous electricity
Machine 3, by the synchronously driven conveyer belt of some AC induction motors 3, also include driving each AC induction motor 3 and alternating current asynchronous
The equal frequency converter of motor 3 quantity, wherein one frequency converter is primary transducer 1, the power input of each frequency converter and electrical network
It is connected, power output end is connected with the stator input of corresponding AC asynchronous motor 3；Described it is connected with primary transducer 1
AC induction motor and the motor shaft of the AC induction motor being connected with from frequency converter 2 when being rigidly connected, and from frequency converter even
The AC induction motor connecing exports power with constant moment of force, so that there is not speed difference (as shown in Figure 1) between gear unit.Institute
State the AC induction motor being connected with primary transducer 1 and the employing flexible connection of the AC induction motor being connected with from frequency converter 2,
The AC induction motor being attached thereto is controlled to adopt speed control mode (as shown in Figure 2) from frequency converter 2；Equipment sets respectively
The inductor having detection motor speed, the inductor detecting conveyer belt transporting velocity, detection reductor oil temperature inductor, detection rolling
The inductor of cylinder temperature, described primary transducer is attached communicating using optical fiber link with from frequency converter.
Above-mentioned any one frequency converter is convertible into primary transducer, by slave digital input end or communication modes
To complete the free switching between speeds control and direct torque.Frequency conversion equipment is automatically performed master-slave communication function：As ABB
The 6SE71 series of ACS800, ACS1000 and Siemens, such connection is typically communicated using optical fiber link, and feature is speed
Hurry up, high precision, response are in time.Frequency conversion equipment completes the master ＆ slave control to equipment by control PLC, using Fieldbus Control skill
Art.As GM150, Luo Binkang series of Siemens, G150 etc., feature be control mode flexibly, can be realized very by PLC programming
Many senior control functions.
Embodiment 2：As shown in figure 3, a kind of operation method of the large-scale transmission master ＆ slave control equipment of conveyer belt conveyer, the party
Method comprises the following steps：
1), primary transducer starting up, primary transducer parameter setting finishes, PLC programming and human-machine interface configuration after the completion of,
By PROFIBUS network by download program to PLC, converter parameter is downloaded to frequency converter；
2), before, running each frequency converter for the first time, each frequency converter carries out static state and the Dynamic Identification of motor, and speed link can
To finely tune in actual motion；
3), before system startup, PLC primary transducer checks whether all protectors are normal, detected by each sensor first
Go out the various signals of conveyer belt machine, from the status signal of frequency converter, connect the permission enabling signal of conveyer belt, these information in front and back
Fully enter inside PLC；
4), after all devices are ready, start conveyer belt, PLC primary transducer sends operation restricted speed signal, conveyer belt
Extensions alarm light flashes 10 seconds, terminates rear PLC primary transducer and starts motor radiating blower fan, reductor cooling fan, startup first
Releasing of brake band-type brake, feeds back to one when brake reaches and reaches a signal to PLC it is necessary to be that three brakes all unclamp
Put in place, now PLC starts each frequency converter, input given frequency in touch-screen, the run signal output frequency that PLC gives pressed by frequency converter
Rate, controlled motor presses given serpentine curve soft start；
5), at the uniform velocity rise under the acceleration time setting from frequency converter, conveyer belt reaches to start during normal speed and finishes,
PLC passes through inductor real-time detection line speed and drum speed, when the two speed difference exceedes setting, stops in emergency,
And send skidding alarm signal；
6), when, stopping, slow down first and stop, from frequency converter, confirming all to shut down from frequency conversion feedback signal, detection transmission
Tape speed is reduced to startup brake when 0, wraps dead motor shaft, and parking finishes；
7), after the normal startup of conveyer belt, the state of each protector of PLC real-time detection conveyer belt, the electricity of AC induction motor
Stream/torque, reductor oil temperature, bowl temperature.
It will be seen that 1# and 2# is mechanically coaxially bound up from Fig. 3, so this 2 motors
Actual speed is definitely identical；And 1# and 3# is possible to there is fraction of velocity deviation.
For this 3 motors of belt feeder, optimal state is that the output current of 3 motors is identical, can
To come close to this target using suitable converter parameter and PLC control program, 3 frequency converters adopt PROFIBUS-DP to control
Mode processed, communications protocol is written and read communicating using 6/6PZD word.
Converter parameter method to set up is as follows：
Under SIMATIC Manager, insert 3 frequency converters.3 transmission devices are carried out configuration, will wherein 1# be set to
Main transmission equipment, the 2# being coaxial therewith connecting is pure direct torque mode, and 3# is the control mode of speeds control reinforcing square amplitude limit.
Speed set link in, increased 1 secondary setup 2% it is therefore an objective to allow 3# speed set faster 1Hz than 1# main frame.
If it is $ ng that synchronizing speed allows bandwidth of operation, it is respectively n1 in the actual feedback rotating speed of k moment Dual Drive motor
(k)、n2(k),
The process speed ratio that different motors require is(N1, N2 are respectively two motor speeds and give
Value), to definite value speed system Kn=1, two motors asynchronous stop report to the police maximum speed discrepancy be $ nmax, then when:
System synchronization is normal, does not synchronize compensation adjustment；
System is seriously asynchronous, stops and reports to the police；
Calculate synchroballistic amount, implement synchroballistic
Control.
Synchroballistic controlled quentity controlled variable unj (k) of 2 motors is：
(1), in formula, unj (k) is that the synchronizing speed of j-th motor compensates control output, and aj (k), bj (k), kj are j-th
Motor compensating calculates variable.Wherein kj is determined by site technique, and aj (k), bj (k) are given by：
Aj (k)=- Sing [nj (k)-ngj- $ ng] bj (k)=Sing [ngj-nj (k)-$ ng]；
(2) in formula, ngj is speed preset value, to its value of different motors is：
Sign function is defined as Sing [x]=+ 1x >=0-1x<0；
Finally obtain output uj (k)=udj (the k)+unj (k) (j=1,2) of isochronous controller；
(4) in formula, j-th motor list closed-loop speed adjuster of udj (k) controls output；
J-th motor compensating controlled quentity controlled variable of unj (k).
The error protection of the present invention, concrete protected mode is as follows：
1), when there being emergency episode artificially to trigger jerk, all frequency converters of PLC jerk, brake action locking immediately electricity
Arbor implements Brake stop, is stopped in the way of the fastest, and accident infringement is reduced to minimum；
2), all temperature exceed the high PLC that prescribes a time limit and only send alarm signal and do not shut down, touch-screen meeting display alarm, temperature
Continue to be increased beyond high prescribe a time limit, PLC sends fault-signal orderly shutdown；
3), there is conveyer belt sideslip alarm, fault orderly shutdown when continuous 10 seconds, will be reported；
4) fault orderly shutdown will be reported when, coal piling, smog occurring, skidding；
5) when, brake malfunctions reach dropout, frequency converter is by jerk.
6), under multiple stage frequency converter linkage status, wherein one frequency converter stops in emergency when breaking down, to ensure not damage
Other frequency converters；
7), detection line speed is reduced to brake when 0；
8), when downstream conveyor machine scram, fault orderly shutdown will be reported, prevent windrow accident.
Step 3) in signal at least include dragline emergency stop switches, smoke signal, coal piling signal, vertical tear signal, sideslip letter
Number, frequency converter ready signal, cascading conveyors start interlocking signal.
Embodiment 2：As shown in figure 4, the system block diagram being connected with frequency converter for a conticaster, conticaster is using 2～3 electricity
Motivation synchronizes driving throwing for 1 stream, and each motor controls for separate transmission, and not requiring nothing more than each motor must adjust stringent synchronization
Speed, and require speed regulation process rapid, sensitive, smooth.The former conticaster of Guizhou large iron and steel enterprise group adopts direct current to adjust
Fast mode, fault rate is high, and poor synchronization has had a strong impact on lumber recovery and the single current yield of steel billet.For this situation, we adopt
With AC frequency conversion synchronous variable-speed scheme, conticaster is transformed.In view of motor installation place high temperature, humidity, bad environments, directly
Connect using speed feedback it is difficult to ensure that feedback device and signal can work stably in a long term, thus the independent electrical with belt current feedback
Based on machine close loop control circuit, constitute multistage synchronous drive control system.
Synchroballistic controls using Based Intelligent Control rule presented hereinbefore
In formula
Penalty coefficient kj according to field control experience determine, $ i be synchronizing current permission bandwidth of operation, actual be taken as 0.5A,
Ij (k) (j=1,2,3) is 3 alternating current generators of k moment load current sampled value (measuring in frequency converter) respectively.Engineered
Conticaster afterwards is reliable, and net synchronization capability is good, substantially increases continuous casting furnace number and single current yield, also for improving conticaster pulling rate
Create good condition.
The foregoing is only the preferred embodiment of the present invention, not thereby limit the scope of the claims of the present invention, every profit
The equivalent structure made with description of the invention and accompanying drawing content or equivalent flow conversion, or directly or indirectly it is used in other phases
The technical field closed, is included within the scope of the present invention.
Claims (5)
1. the large-scale transmission master ＆ slave control equipment of a kind of conveyer belt conveyer, this equipment includes multiple AC induction motors, by some
The synchronously driven conveyer belt of AC induction motor, also includes driving each AC induction motor equal with AC induction motor quantity
Frequency converter；Wherein one frequency converter is primary transducer, and the power input of each frequency converter is connected with electrical network, and power supply exports
End is connected with the stator input of corresponding AC asynchronous motor；It is characterized in that：The alternating current asynchronous being connected with primary transducer
The motor shaft of motor and the AC induction motor being connected with from frequency converter is rigidly connected, the alternating current asynchronous electricity being connected with from frequency converter
Machine exports power with constant moment of force；Or the AC induction motor being connected with primary transducer and the alternating current asynchronous electricity being connected with from frequency converter
Machine, using flexible connection, adopts speed control mode with the AC induction motor being connected from frequency converter；Equipment is respectively equipped with
The inductor of detection motor speed, the inductor of detection conveyer belt transporting velocity, the inductor of detection reductor oil temperature, detection rolling
The inductor of cylinder temperature, described primary transducer is attached communicating using optical fiber link with from frequency converter, above-mentioned any one change
Frequency device is convertible into primary transducer, digital input end or a communication side of the AC induction motor by being connected with from frequency converter
Formula is completing the free switching between speeds control and direct torque.
2. a kind of large-scale transmission master ＆ slave control equipment of conveyer belt conveyer according to claim 1 it is characterised in that：Described
Be rigidly connected the one kind at least including that gear connects, chain connects.
3. the operation side of the conveyer belt conveyer large-scale transmission master ＆ slave control equipment described in a kind of any one with claim 1-2
Method is it is characterised in that the method comprises the following steps：
1), primary transducer starting up, primary transducer parameter setting finishes, PLC programming and human-machine interface configuration after the completion of, pass through
PROFIBUS network, by download program to PLC, converter parameter is downloaded to each frequency converter；
2) before, running each frequency converter for the first time, the static state of the AC induction motor being respectively attached thereto from frequency converter and dynamic
State recognizes, and speed link is finely tuned in actual motion；
3), before system startup, primary transducer checks whether all protectors are normal, detect conveyer belt by each sensor first
The various signals of conveyer, from the status signal of frequency converter, connect the permission enabling signal of conveyer belt, above-mentioned each signal is complete in front and back
Portion is input to inside PLC；
4), primary transducer, each from frequency converter, each AC induction motor ready after, start conveyer belt, primary transducer sends
Run restricted speed signal, conveyer belt alarm light along the line flashes 10 seconds, terminate rear primary transducer and start AC induction motor radiating first
Blower fan, reductor cooling fan, start releasing of brake band-type brake, feed back to one when brake reaches and reach a signal to PLC,
Must be that three brakes all unclamp and put in place, now PLC starts each frequency converter, input given frequency in touch-screen, from frequency conversion
The run signal output frequency that PLC gives pressed by device, controls the AC induction motor being connected with from frequency converter to press given serpentine bent
Line soft start；
5), at the uniform velocity rise within the acceleration time setting from frequency converter, conveyer belt reaches to start during normal speed and finishes, and PLC leads to
Cross inductor real-time detection line speed and drum speed, when the two speed difference exceedes setting, stop in emergency, and send
Skidding alarm signal；
6), when, stopping, slow down first and stop, from frequency converter, confirming all to shut down from frequency converter feedback signal, detecting conveyer belt
Speed is reduced to startup brake, the motor shaft of the AC induction motor that locking is connected when 0 with from frequency converter, and parking finishes；
7), conveyer belt is normal start after, the state of each protector of each corresponding inductor real-time detection conveyer belt, alternating current asynchronous electricity
Electric current/the torque of machine, reductor oil temperature, bowl temperature.
4. the operation method of the large-scale transmission master ＆ slave control equipment of a kind of conveyer belt conveyer according to claim 3, it is special
Levy and be, also include error protection, concrete protected mode is as follows：
1), when there being emergency episode artificially to trigger jerk, PLC control all from frequency converter jerk, brake action locking immediately
The motor shaft of the AC induction motor being connected with from frequency converter implements Brake stop, is stopped, accident is damaged in the way of the fastest
It is reduced to minimum；
2), reductor oil temperature or bowl temperature exceed height and prescribe a time limit, and PLC only sends alarm signal and do not shut down, and touch-screen can show
Report to the police, temperature continue to be increased beyond high prescribe a time limit, PLC sends fault-signal orderly shutdown；
3), occur to report fault orderly shutdown when conveyer belt sideslip alarm, continuous 10 seconds of conveyer belt sideslip；
4) fault orderly shutdown will be reported when, coal piling, smog occurring, skidding；
5), brake malfunctions reach jerk during dropout from frequency converter；
6), under multiple stage frequency converter linkage status, wherein one frequency converter stops in emergency when breaking down, to ensure not damaging other
Frequency converter；
7), detection line speed is reduced to brake when 0；
8), when downstream conveyor and when the electrical fault that is connected with conveyer belt is stopped, fault orderly shutdown will be reported, prevent windrow
Accident.
5. the operation method of the large-scale transmission master ＆ slave control equipment of a kind of conveyer belt conveyer according to claim 3, it is special
Levy and be：Step 3) in each signal at least include dragline emergency stop switches signal, smoke signal, coal piling signal, vertical tear signal, race
The number of believing one side only, frequency converter ready signal, cascading conveyors start interlocking signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015660.7A CN104773465B (en) | 2014-01-14 | 2014-01-14 | Large-scale transmission master-slave control equipment of belt conveyer and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015660.7A CN104773465B (en) | 2014-01-14 | 2014-01-14 | Large-scale transmission master-slave control equipment of belt conveyer and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104773465A CN104773465A (en) | 2015-07-15 |
| CN104773465B true CN104773465B (en) | 2017-02-15 |
Family
ID=53615285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410015660.7A Active CN104773465B (en) | 2014-01-14 | 2014-01-14 | Large-scale transmission master-slave control equipment of belt conveyer and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104773465B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2625542B (en) * | 2022-12-19 | 2025-03-05 | Ocado Innovation Ltd | Method and system for determining belt slippage |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105438727B (en) * | 2015-12-09 | 2018-03-30 | 山东钢铁股份有限公司 | A kind of control method and control system of two-way dual drive belt |
| CN106144489B (en) * | 2016-01-28 | 2018-10-30 | 上海颐坤自动化控制设备有限公司 | Coal mine conveys energy conserving system |
| EP3412604A1 (en) * | 2017-06-06 | 2018-12-12 | Siemens Aktiengesellschaft | Drive system for a belt conveyor, method for driving a belt conveyor, belt conveyor, control device and computer program product |
| CN107291040B (en) * | 2017-08-02 | 2019-04-30 | 中天钢铁集团有限公司 | Prevent the safety interlock system and control method of dedusting fan burn-out of bearing |
| CN108220861A (en) * | 2018-03-30 | 2018-06-29 | 哈尔滨理工大学 | A kind of compressor crank shaft applies molybdenum control method |
| CN110963256B (en) * | 2019-11-21 | 2021-08-27 | 青岛中加特电气股份有限公司 | Self-adaptive speed regulation control method for conveyor |
| CN111517090B (en) * | 2020-04-30 | 2020-12-22 | 广东水电二局股份有限公司 | Belt conveyor scram control system |
| CN111781901A (en) * | 2020-06-28 | 2020-10-16 | 淮南北新建材有限公司 | Control device and control method thereof, and gypsum board production line |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5173286B2 (en) * | 2007-07-06 | 2013-04-03 | 株式会社ブリヂストン | Belt monitoring system |
| CN201354252Y (en) * | 2008-12-24 | 2009-12-02 | 太原罗克佳华工业有限公司 | Long-distance downward belt conveyer with high strength and large conveying capacity |
| CN101898681B (en) * | 2010-08-20 | 2012-04-18 | 上海电器科学研究所（集团）有限公司 | Belt Conveyor Load Prediction Control Method |
| CN201761914U (en) * | 2010-09-06 | 2011-03-16 | 常州耳其电器有限公司 | Integrated mining rubber belt conveyor protection device |
| CN201849920U (en) * | 2010-11-04 | 2011-06-01 | 南京康迪欣电子电器有限责任公司 | Intelligent protection system of long-distance belt conveyer |
| CN201864320U (en) * | 2010-11-09 | 2011-06-15 | 山东迈赫自动化装备股份有限公司 | Double-drive synchronization control transporter |
| CN203033380U (en) * | 2012-12-30 | 2013-07-03 | 衡阳运输机械有限公司 | Intelligent control system for long-distance belt conveyor |
| CN203095050U (en) * | 2013-03-12 | 2013-07-31 | 山东新风光电子科技发展有限公司 | Constant voltage frequency ratio control system of belt conveyor driven by a plurality of motors |
-
2014
- 2014-01-14 CN CN201410015660.7A patent/CN104773465B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2625542B (en) * | 2022-12-19 | 2025-03-05 | Ocado Innovation Ltd | Method and system for determining belt slippage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104773465A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104773465B (en) | Large-scale transmission master-slave control equipment of belt conveyer and operation method thereof | |
| CN106229996B (en) | A kind of system and its control method for realizing the operation of SVG device multi-machine parallel connection | |
| CN104226951B (en) | A kind of conticaster stops the method that the stage of watering improves qualified scale strand output | |
| CN102354173A (en) | Automatic coordinated control system of coal mine heading machine, belt feeder and dust remove blower | |
| CN104097915B (en) | Many drive belts machine synchro system | |
| CN104049566B (en) | A kind of Electrified Transmission control method of converter inclining safety | |
| CN102745482B (en) | Conveyer device and conveying method thereof | |
| CN107539750A (en) | Ribbon conveyer energy-saving control device | |
| CN104310012A (en) | Intelligent scraper conveyor and monitoring system thereof | |
| CN106111929B (en) | A kind of round billet continuous casting straightening motor load dynamically distributes control system and its control method | |
| US10044194B2 (en) | Decentralized energy management in automated industrial installations using self-organizing networks | |
| CN104503412A (en) | Coal preparation technique optimal control system and coal preparation technique optimal control method | |
| CN208482831U (en) | Auto―adaptive test waste picking system | |
| CN102629130B (en) | Control method and control system for high-speed drawing and high-speed cutoff welding rod production line | |
| CN101935722B (en) | Control method of bypass valve of energy recovery device during abnormal full close of stator blade | |
| CN221703791U (en) | Intelligent coordination control system for three machines of fully mechanized mining face | |
| CN103266193A (en) | Wind transfer security system | |
| CN102591376A (en) | Temperature control device of cement kiln decomposition furnace | |
| CN101000501A (en) | Analog rolling system of aluminium coil hot tandem mill | |
| CN205065789U (en) | Coal intelligence control system is fed to dore furnace | |
| CN203658829U (en) | Mining machinery intelligent control device | |
| CN102660656A (en) | Speed control system and speed control method for granulating and dewatering rotary drum of blast furnace | |
| CN107676074B (en) | Electric control system for synchronous construction of double drilling machines | |
| CN107963422B (en) | System for eliminating induced voltage in program-controlled circuit of coal conveyor | |
| CN111532710A (en) | Control system for belt conveyor and belt conveyor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221221 Address after: 221-1, Floor 2, New Energy Innovation Industrial Park, Kanghesheng Building, No.1 Chuangsheng Road, Nanshan District, Shenzhen, Guangdong 518055 Patentee after: SHENZHEN KANGBIDA CONTROL TECHNOLOGY CO.,LTD. Address before: 518048 2605V, Greater China International Trading Plaza, Jintian Road, Futian District, Shenzhen, Guangdong Patentee before: SHENZHEN HUITUO XINBANG TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |