CN103122250A - Electrical transmission control system of dry quenching elevator - Google Patents
Electrical transmission control system of dry quenching elevator Download PDFInfo
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- CN103122250A CN103122250A CN2013100173932A CN201310017393A CN103122250A CN 103122250 A CN103122250 A CN 103122250A CN 2013100173932 A CN2013100173932 A CN 2013100173932A CN 201310017393 A CN201310017393 A CN 201310017393A CN 103122250 A CN103122250 A CN 103122250A
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- 238000010791 quenching Methods 0.000 title claims abstract description 27
- 230000000171 quenching effect Effects 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 title abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 8
- 239000000571 coke Substances 0.000 claims description 29
- 230000006978 adaptation Effects 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 240000006909 Tilia x europaea Species 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 230000036039 immunity Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000009394 selective breeding Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses an electrical transmission control system of a dry quenching elevator. The electrical transmission control system comprises a programmable logic controller (PLC) system, a control unit, a rectification module, a motor control system, an incremental encoder, an encoder adaption module and an inversion module, wherein the PLC system is connected with the control unit and used for controlling a rotating speed of a variable-frequency motor; the control unit is used for controlling cable communication between the rectification module and the inversion module; the incremental encoder is coaxially connected with the variable-frequency motor and used for collecting a pulse signal of the encoder through the encoder adaption module; and the inversion module is used for calculating a real rotating speed of the variable-frequency motor through a calculated and feedback pulse count so as to realize the closed-loop control of the speed. Due to the adoption of the electrical transmission control system, the control precision can be improved, energy conservation can be favored, an electrical layout space can be saved, control reliability and interference resistance of a control signal can be improved, and safety and reliability in running of the system can be guaranteed.
Description
Technical field
The present invention relates to industrial control field, relate in particular to a kind of coke dry quenching hoister electric drive control system.
Background technology
Lift is red burnt transportation equipment crucial in the dry coke quenching engineering.The burnt tank (being fully loaded with) that burnt tank chassis will be equipped with red coke is transported under coke dry quenching hoister from coke oven, the lifting by lift, traversing burnt tank is transferred to coke dry-quenching loading device, then burnt tank (zero load) is transferred on burnt tank chassis.Due to the operational characteristic of lift continuous operation frequent operation, require its control panel should possess very high safe reliability.
In the electric drive system that existing dry coke quenching adopts with lift, variable frequency control adopts traditional resistance braking usually, and location, velocity control accuracy are not high, is unfavorable for energy-conservationly, and the transmission mechanism volume is larger, takies the problems such as too much electric panel room space; Simultaneously; it is insufficient that consideration is controlled in the protection such as the emergent lifting system during to the lift fault; the master mode of single band-type brake also is unfavorable for fast braking; and Fieldbus Control pattern commonly used; the transport delay of data packet in network service; the transient error of communication system and data-bag lost; send with the inconsistent grade that arrives order and all can destroy driving control system stability; make the performance of Controlling System be subject to negative impact; thereby the even burnt tank of serious mechanical collision occurs from falling down in the air, produce Serious Accident.
Summary of the invention
For solving the problem and blemish of above-mentioned middle existence, the invention provides a kind of coke dry quenching hoister electric drive control system.This system can improve control accuracy, it is energy-conservation to be beneficial to, save the electrical arrangement space, improved the immunity from interference of controlling reliable and control signal, guaranteed security of system, reliability service.Described technical scheme is as follows:
A kind of coke dry quenching hoister electric drive control system comprises:
PLC system, control unit, rectification module, motor control system, incremental encoder, encoder adaptation module and inversion module; Described
The PLC system is connected with control unit, in order to control the rotating speed of variable-frequency motor;
Control unit is used for controlling the cable communication between rectification module and inversion module;
Incremental encoder is connected with variable-frequency motor is coaxial, and by encoder adaptation module capturing and coding device pulse signal;
Inversion module is used for feeding back next umber of pulse by calculating, calculates the actual speed of variable-frequency motor, realizes the closed-loop control of speed.
The beneficial effect of technical scheme provided by the invention is:
Can improve control accuracy, adopt regenerative braking to be beneficial to energy-conservation, brand-new SINAMICS series of modular design saving electrical arrangement space, adopt two disc brakes to improve the braking reliability, adopt the terminal rigid line to control the Anti-jamming of signal ability that improved, be equipped with emergent lifting system and guaranteed security of system, reliability service.
Description of drawings
Fig. 1 is coke dry quenching hoister electric drive control system structural representation;
Fig. 2 is that coke dry quenching hoister electric drive control system lift promotes rising schema in tower;
Fig. 3 is the coke dry quenching hoister electric drive control system lift chamber side decline schema that prestores;
Fig. 4 is the coke dry quenching hoister electric drive control system lift chamber side rising schema that prestores;
Fig. 5 is that coke dry quenching hoister electric drive control system lift promotes decline schema in tower.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing:
Referring to Fig. 1, be coke dry quenching hoister electric drive control system structure, described system comprises: PLC system, control unit, rectification module, motor control system, incremental encoder, encoder adaptation module and inversion module; Described
The PLC system is connected with control unit, in order to control the rotating speed of variable-frequency motor;
Control unit is used for controlling the cable communication between rectification module and inversion module;
Incremental encoder is connected with variable-frequency motor is coaxial, and by encoder adaptation module capturing and coding device pulse signal;
Inversion module is used for feeding back next umber of pulse by calculating, calculates the actual speed of variable-frequency motor, realizes the closed-loop control of speed.
Said system also comprises expansion board, lifting motor and emergent lift, and described lifting motor is connected with described inversion module; Described emergent lifting motor is connected with described motor control system.
Above-mentioned PLC system is by rigid line terminal and control unit communication, controlling variable-frequency motor low speed, middling speed and the operation of speed at a high speed, and promotes with the direction of decline and moves.Fieldbus only reads the state of transmission mechanism as PLC, comprise operation power supply and output frequency.
The emergent lifting motor of said motor can pass through the manual clutch switch at main motor during because of various situation cisco unity malfunction, utilizes emergent lifting motor enforcement low speed elevation, thereby effectively avoids the generation of lifting accident, has improved the degree of reliability of electric drive system.
Above-mentioned inversion module is comprised of six thyristors, satisfies the condition of can driving in the wrong direction, and has realized regenerative braking effectively.When motor is in feedback operating mode (braking or lift heavy descend), the energy that the motor feedback produces raises DC bus-bar voltage, when this voltage reaches certain value, its energy returns to electrical network by feedback unit, thereby makes system realize the four-quadrant motion, makes electrical arrangement more economically, rationally.Simultaneously above-mentioned control unit adopts integrated form CU320 control unit, states control unit and connects control rectification module and inversion module by the cable communication, adopts the communication of Drive CLIQ cable, has improved the Harmony that system controls.
Above-mentioned variable-frequency motor adopts two disc brakes, and two disc brakes are separately positioned on the shaft side, and control band-type brake by control unit, to realize in quick, the reliable braking that occurs in unexpected situation; Above-mentioned control band-type brake is to control band-type brake by drive controller CU320.Above-mentioned band-type brake system comprises service brake and safety brake, and when lift need to move at every turn, at first safety brake opened a sluice gate; after opening a sluice gate to put in place; promote variable-frequency motor and exert oneself after the moment of torsion that reaches certain, service brake is opened a sluice gate, and promotes variable-frequency motor and brings into operation; when needing to shut down; service brake coordinate to promote the variable-frequency motor braking of first closing a floodgate, and after time-delay 4s, safety brake closes a floodgate and brakes, and breaks down or during accident; according to the retrosequence of upper computer, the safe emergency braking.
In order to realize accurate location and safe operation, promote controlling default third speed, carry out speed setting according to the signal of limit switch and the distance value of encoder detection.Simultaneously; system is anxious stops having two sources, namely adopts the mode that rigid line connects directly to receive the emergent stop signal that comes from on-the-spot position limitation protection, also receives the emergent stop signal that sends from PLC software simultaneously; above measure has improved immunity from interference, guarantees security of system, reliability service.
The present embodiment also provides coke dry quenching hoister electric drive control system lift to promote rising flow process in tower, the operation of lift mainly rises to burnt tank the top of winding shaft exactly from electric locomotive, then traveling is to the top of coke quenching tower, drop to again on charging apparatus red Jiao is poured into dried putting out in stove, then get back in order winding shaft and empty burnt tank is placed on electric locomotive.
When the abnormal conditions such as frequency converter failure, system alarm also switches to the single action state, and the artificial selection operating method is used the emergency lifting system operation, completes a cycle of operation.In addition, the coke dry quenching hoister electric drive control system has also designed chain chain, the super limes superiors of protection position, the limes superiors position unlocking function that also designed of limes superiors position protection, lift limes superiors position is the operating key position of lift equipment, this coke dry quenching hoister electric drive control system is sent into the hoister control inversion module by rigid line after gathering this limit signal, realizes interlock protection; Simultaneously, disturb in order to get rid of signal, also more safe and reliable for limes superiors position detection signal, adopt the form of two upper limits.In addition, the coke dry quenching hoister electric drive control system has also designed super upper limit unlocking function, after the super upper limit of device, the pulse blocking of hoister control inversion module and snub are anxious to stop, after fault is got rid of, by starting super upper limit unlocking function, this cycle of operation is completed in interim manual operation, is conducive to reliable, the efficient operation of elevator system.
be illustrated in figure 2 as coke dry quenching hoister electric drive control system lift and promote rising flow process in tower, the electric locomotive location is complete, after APS has pinned, PLC sends to rise to frequency transformer and allows instruction, after frequency transformer is received instruction, unclamp band-type brake according to the band-type brake threshold value, accelerating to middling speed rises, PLC is according to the travel position of encoder and limit switch detection, adjust in real time the travelling speed of frequency transformer, after machine suspension hook locking to be hoisted, accelerating to respectively middling speed rises, being decelerated to low speed rises, after coke jar cover is closed, accelerating to respectively middling speed rises, accelerate at a high speed and rise, being decelerated to middling speed rises, being decelerated to low speed rises, after lift extremely can be walked line position, PLC sends stop instruction, lift rises and stops.Band-type brake is closed according to the threshold value of setting.
Be illustrated in figure 3 as the coke dry quenching hoister electric drive control system lift chamber side decline flow process that prestores, run to when PLC receives coke tank truck that centering is spacing, after charging apparatus is ready to signal, send to descend to lift and allow instruction, lift unclamps band-type brake according to the band-type brake threshold value, begin to descend, accelerate to middling speed and descend, be decelerated to low speed and descend,, burnt tank spacing when the charging apparatus implantation open spacing after, PLC gives to lift and falls stop instruction, and band-type brake is closed according to the threshold value of setting.Beginning blanking timing.
be illustrated in figure 4 as the coke dry quenching hoister electric drive control system lift chamber side rising flow process that prestores, the blanking timing finishes (approximately 25～30 seconds) and charging apparatus is ready to, PLC sends out to rise to lift and allows instruction, lift unclamps band-type brake according to the band-type brake threshold value, beginning low speed rises, when burnt tank is closed, after charging apparatus is closed from bed and charging apparatus, PLC sends middling speed to lift respectively according to position feed back signal and rises, the low speed climb command, after PLC receives the feasible limit signal of walking to put in place, send out stop instruction to lift, lift rises and stops, band-type brake is closed according to the threshold value of setting.
be illustrated in figure 5 as coke dry quenching hoister electric drive control system lift and promote decline flow process in tower, after the lift traveling moves into place, PLC sends to descend to lift and allows instruction, lift unclamps band-type brake according to the band-type brake threshold value, PLC detects according to encoder and limit-switch positions, sending out middling speed to lift respectively descends, descend at a high speed, deceleration decline instruction, promote interposition in tower when dropping to, APS pins, then lift runs slowly, after burnt tank implantation, lift accelerates, run slowly, after burnt tank is uncapped, after the lift suspension hook is opened, PLC gives to lift and falls stop instruction, band-type brake is closed according to the threshold value of setting, lift descends and stops.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a coke dry quenching hoister electric drive control system, is characterized in that, described system comprises: PLC system, control unit, rectification module, motor control system, incremental encoder, encoder adaptation module and inversion module; Described
The PLC system is connected with control unit, in order to control the rotating speed of variable-frequency motor;
Control unit is used for controlling the cable communication between rectification module and inversion module;
Incremental encoder is connected with variable-frequency motor is coaxial, and by encoder adaptation module capturing and coding device pulse signal;
Inversion module is used for feeding back next umber of pulse by calculating, calculates the actual speed of variable-frequency motor, realizes the closed-loop control of speed.
2. coke dry quenching hoister electric drive control system according to claim 1, is characterized in that, described system also comprises expansion board, lifting motor and emergent lift, and described lifting motor is connected with described inversion module; Described emergent lifting motor is connected with described motor control system.
3. the burnt lift electric drive control system that stops working of doing according to claim 1, is characterized in that, described inversion module is comprised of six thyristors.
4. the burnt lift electric drive control system that stops working of doing according to claim 1, is characterized in that, described variable-frequency motor adopts two disc brakes, and two disc brakes are separately positioned on the shaft side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310017393.2A CN103122250B (en) | 2013-01-17 | 2013-01-17 | Electrical transmission control system of dry quenching elevator |
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| CN201310017393.2A CN103122250B (en) | 2013-01-17 | 2013-01-17 | Electrical transmission control system of dry quenching elevator |
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| CN103122250A true CN103122250A (en) | 2013-05-29 |
| CN103122250B CN103122250B (en) | 2014-02-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167974A (en) * | 2014-08-28 | 2014-11-26 | 辽宁荣信电气传动技术有限责任公司 | Encoder signal acquisition topological structure based on high-voltage inverters |
| CN110669533A (en) * | 2018-07-03 | 2020-01-10 | 上海梅山钢铁股份有限公司 | Coke oven electric locomotive transmission system |
| CN113416560A (en) * | 2021-06-24 | 2021-09-21 | 武汉钢铁有限公司 | Online hot standby system of frequency converter of dry quenching hoister, hot standby control method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515034A (en) * | 2011-12-27 | 2012-06-27 | 北京佰能电气技术有限公司 | Dry coke quenching lifter and lifter positioning method |
| CN202472439U (en) * | 2011-12-05 | 2012-10-03 | 济南钢铁股份有限公司 | Automatic control system of CDQ of CDQ boiler |
-
2013
- 2013-01-17 CN CN201310017393.2A patent/CN103122250B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202472439U (en) * | 2011-12-05 | 2012-10-03 | 济南钢铁股份有限公司 | Automatic control system of CDQ of CDQ boiler |
| CN102515034A (en) * | 2011-12-27 | 2012-06-27 | 北京佰能电气技术有限公司 | Dry coke quenching lifter and lifter positioning method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167974A (en) * | 2014-08-28 | 2014-11-26 | 辽宁荣信电气传动技术有限责任公司 | Encoder signal acquisition topological structure based on high-voltage inverters |
| CN110669533A (en) * | 2018-07-03 | 2020-01-10 | 上海梅山钢铁股份有限公司 | Coke oven electric locomotive transmission system |
| CN113416560A (en) * | 2021-06-24 | 2021-09-21 | 武汉钢铁有限公司 | Online hot standby system of frequency converter of dry quenching hoister, hot standby control method and device |
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| CN103122250B (en) | 2014-02-26 |
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Effective date of registration: 20171031 Address after: 100096, 18, 5, 518, East Building Road, Xisanqi, Beijing, Haidian District Patentee after: BEIJING BESTPOWER INTELCONTROL TECHNOLOGY Co.,Ltd. Address before: 100096, Beijing Haidian District Xisanqi building materials East Road, No. 18, can Bai building Patentee before: BEIJING BESTPOWER ELECTRICAL TECHNOLOGY Co.,Ltd. |
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Address after: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee after: BEIJING BESTPOWER INTELCONTROL CO.,LTD. Address before: 100096 Beijing Haidian District Xisanqi building materials East Road 18, 5, 518 room. Patentee before: BEIJING BESTPOWER INTELCONTROL TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 |
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