CN204802572U - Frequency conversion control speed governing type scraper conveyor - Google Patents
Frequency conversion control speed governing type scraper conveyor Download PDFInfo
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- CN204802572U CN204802572U CN201520112251.9U CN201520112251U CN204802572U CN 204802572 U CN204802572 U CN 204802572U CN 201520112251 U CN201520112251 U CN 201520112251U CN 204802572 U CN204802572 U CN 204802572U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model relates to an it is exactly a frequency conversion control speed governing type scraper conveyor to combine and adopt working face speed governing type scraper conveyor technical field. The utility model discloses a variable frequency technology changes motor power supply frequency, and then changes motor rotation number, reaches the purpose of adjusting scraper conveyor speed. The utility model discloses a scraper conveyor cell body, the chain drive section, tail portion, chain wheel module, seal the scraper chain, a speed reducer, including a motor, an end cap, a controller, and a cover plate, still include the converter, a main controlle, and the tie cable constitutes, wherein main control unit passes through the tie cable to the whole speed governing of scraper blade conveyer motor with the converter, the motor output shaft passes through the shaft coupling and is connected with the reduction gear input, the direct driving sprocket subassembly of gearbox output end is rotatory with settlement speed, drive to seal the scraper chain and transport to the chain drive section to the coal by tail portion, the efficiency of the converter operation is improved, messenger's conveyer is high -efficient, energy saving, high reliability. The utility model discloses the technology maturation has improved the performance of equipment and the comprehensive benefit in colliery.
Description
Technical field
The utility model relates to underground coal mine Scraper Conveyor in Mining Face, specifically a kind of variable frequency control speed-regulating type slat conveyer.This conveyer changes the line frequency of motor 7 by the frequency converter 1 under master controller 2 control, and then changes motor speed, reaches according to load variations in the omnidistance object of its running velocity being carried out to real-time dynamic regulation of conveyer start-up and operation.Thus make conveyer more efficient, energy-conservation, improve its reliability of operation.
Background technology
Slat conveyer is a kind of visual plant for underground coal mine fully-mechanized mining working, and the raw coal that carry under being adopted by coalcutter continuously transports elevating conveyor to, guarantees the task that the raw coal of fully-mechanized mining working transports continuously.
For adapt to slat conveyer difficulty in starting, run in duty cycle change and the complex working condition demand such as sudden change is staggered, driving device as one of slat conveyer core technology also grows up gradually along with scientific and technological progress, its driving system scheme is generally all: 1. middle low power slat conveyer many employings double-speed motor full voltage starting scheme, 2., high-performance slat conveyer adopts fluid coupling soft start-up scheme mostly.This two schemes respectively has advantage; also there is its intrinsic problem simultaneously; both only work for slat conveyer heavy load starting problem; but due to the operation study still not comprehensive system of slat conveyer; to duty cycle change in operation with sudden change is staggered etc. that complex working condition does not have suitable terms of settlement; all a fixing running velocity in whole transportation after slat conveyer starts; huge waste is caused during underloading; can not adjust in time during heavy duty and cause transport power inadequate, when even load changing impacts, breakdown of equipment is shut down.Simultaneously in traditional transmission control program, because conveyer is in circulation coal mining process, coal direction transported by coalcutter service direction and conveyer move toward one another and motion two states in the same way, and conveyer coaling capacity generating period is changed.Under this two states, head tail motor output torque is different, and the state that one-to-one draws appears in motor, must cause decline to the service life of flight chain.
Along with the progress of scientific and technological level, Frequency Drive scheme reaches its maturity, has its exclusive advantage: safe reliability is high, and controller performance is excellent, and possess multimachine cooperation control ability, possess wider speed adjustable range, operating efficiency is high.Simultaneously along with the summary and induction in-depth study of slat conveyer operation conditions and slat conveyer being put into practice to use experience more and more enriches perfect.Frequency Drive we be not only applied on the soft start of slat conveyer, also by correlation theory Improvement develop special Frequency Drive design plan be applicable to slat conveyer run overall process.Expand the application covering scope of Frequency Drive, improve degree of utilization, really accomplish energy-conserving and environment-protective, become more meticulous the whole operational process of regulation and control slat conveyer.
Summary of the invention
The utility model adopts special Frequency Drive design plan, have developed the slat conveyer of variable frequency control speed governing for shallow coal seam operating mode.
The purpose of this utility model is to provide a kind of variable frequency control speed-regulating type slat conveyer, expands the application covering scope of Frequency Drive, improves frequency converter degree of utilization, really accomplish energy-conserving and environment-protective, and become more meticulous the whole operational process of regulation and control slat conveyer.
The utility model application multimachine Coordinated Control Scheme, adopts special Frequency Drive scheme, makes the slat conveyer systematization of variable frequency control speed governing.The entirety that variable frequency control speed-regulating type slat conveyer is formed primarily of slat conveyer cell body, chain-drive section, drive end unit and chain wheel assembly 3, closed scraper chain 4, retarder 5, motor 7 and frequency converter 1, master controller 2 and tie cable 6.Frequency converter 1, master controller 2 change motor 7 synchronizing frequency by tie cable 6 and realize motor 7 speed governing; Motor 7 output shaft is connected with retarder 5 input end by coupler, and retarder 5 mouth Direct driver chain wheel assembly 3 rotates with the speed of setting, drives closed scraper chain 4 that coal is transported to chain-drive section by drive end unit.
Wherein frequency converter 1 is made up of jointly head frequency converter and tail frequency converter two parts, and the core devices of frequency converter is IGBT and driver module thereof, adopts NPC (diode clamp formula) three-level topology main circuit scheme.The tail frequency converter wherein controlling tail motor 7 is main frame, and the head frequency converter controlling head motor 7 is from machine, and both adopt the mode of operation based on principal and subordinate's data communication of Can bus; Frequency converter 1 power circuit is NPC three-level topology structure, composed in series by rectifier bridge, DC support electric capacity, inverter bridge and secondary distribution equipment, the utility model rectifier bridge is made up of 6 high-voltage diodes, adopts three-phase six pulse wave uncontrollable rectifier scheme to be direct current (DC) by AC rectification after alternating current input reactance device L1; DC support electric capacity adopts two strings six and connection mode, and electric capacity is withstand voltage reaches 1300V, and can bear 119A ripple current.Ensure that frequency converter is non-maintaining for a long time; Inverter bridge adopts NPC topological structure, every phase brachium pontis is made up of 3 IGBT module, by the source of AC that DC inverter is voltage and frequency-adjustable, outputted to the input end of motor by tie cable 6, change synchronizing frequency by change motor stator power frequency and voltage and realize electric machine speed regulation; NPC topological structure gordian technique is the stack bus bar design of its power circuit, coordinates extra snubber circuit, is aided with simulation calculation and two pulse testing authentication, ensure device security reliability service.
Modular design concept function piecemeal implemented by master controller 2, and interface is clear, and extendability is strong.The utility model adopts 32 bit DSP+FPGA+ARM Collaborative Control modes, possesses calculating and real-time control capability.DSP adopts embedded OS, realizes the core algorithm such as real-time task scheduling and speed-sensorless control; FPGA is responsible for the result of calculation of DSP to be converted into pwm pulse, realizes pulse distribution and driving malfunction is protected, and provides dual port RAM space for DSP and ARM interaction data; ARM is responsible for the peripheral Interface Expanding as RS485, ethernet, USB etc. and realization, and man-machine interface adopts the very color LCDs of Chinese interface giant-screen, and man-machine interface is friendly, facilitates directly perceived, easy and simple to handle.
Frequency converter 1 forms the dicyclo basis speed governing system of torque inner ring, rotating speed outer shroud together with master controller 2, and shown in the utility model speed governing system schematic diagram 3, wherein ASR is rpm governor, and ATL is direct torque ring, and INV is inverter; PG is coder; F/D is frequency/digital conversion.The task of speed governing controls rotating speed, but the key of speed governing is direct torque, the speed adjusting performance that could obtain under condition that is only quick at energy, accurately controlling torque.Torque inner ring ATL controlling torque, after receiving torque Setting signal T*, made that electrical motor actual torque T is quick, dead-beat reaches given value by the control of ATL, a few ms of response time is to tens ms.The existence of direct torque ring is the mark that High Performance speed governing system is different from common scalar Ore-controlling Role.The utility model rotating speed outer shroud core is rpm governor ASR, and be proportional, integral (PI) regulating control, input is the deviation of rotational speed setup n* and actual value n, and output is the given T* of torque.If rotating speed deviation n*-n ≠ 0, under the effect of regulating control integration, the given T* of Driving Torque will change, and control through ATL, electrical motor actual torque T changes thereupon, thus change rotating speed, reduce rotating speed deviation, until n*-n=0, realize rotating speed stable state indifference.Achieve head, tail sequence start and stop controls.The utility model ASR exports has minimum and maximum value to limit, and is exactly electrical motor maximum torque Tmax and minimum torque Tmin restriction.
Further, described variable frequency control speed-regulating type slat conveyer possesses multimachine cooperation control ability, wherein frequency converter 1 two parts main frame tail frequency converter and from machine head frequency converter, between the two by CAN communication, specific embodiments is shown in master & slave control system (TLBS) schematic diagram 4 through the load balancing of torque ring, the control of two cover electrical motors shares a set of rpm governor ASR, it exports as the common given T1* of torque of two cover direct torque ring ATL1 and ATL2, two torque rings impel the actual torque of two motors to equal same given value, thus load balancing, achieve multimachine power balance to control.Be exactly that the frequency of operation (0-50Hz) that sets according to user of main frame carries out constant speed control to tail motor 7 specifically, the torque of output is sent to from machine by data communication by main frame in run with load process, carry out permanent torque control according to the Driving Torque of main frame to head motor 7 from machine, head, tail motor 7 horsepower output obtain equilibrium.
Further, described variable frequency control speed-regulating type slat conveyer adopts converter technique to change feeding electric motors frequency, and then changes motor speed, and frequency converter directly controls the rotating speed of motor, just decreases the consumption of the energy.The utility model frequency converter 1 rate-adaptive pacemaker scope 0-50Hz, speed adjustable range reaches 1: 100, speed-regulating range width, meets and adjusts the maintenance needs such as chain, can when underloading low cruise, reduce and close scraper chain 4 and wear and tear.
Simultaneously for slat conveyer application operating mode, for the requirement that satisfied long distance drives, the utility model frequency converter 1 mouth devises dv/dt reactor L2 especially, frequency converter output voltage rate of change can be reduced to below 300V/us, achieve long distance drive motor, the distance adapted between frequency converter and institute's drive motor can reach the working condition requirement of 1000 meters, ensures the safe and reliable operation of frequency converter and motor.
Further, described variable frequency control speed-regulating type slat conveyer possesses scrapper conveyor special manual operational mode, convenient tune chain and other attended operation.Arrange frequency converter 1 correlation parameter whole process according to the size of conveyer load by master controller 2 to become more meticulous and regulate conveyor speed to become possibility.The operating efficiency of frequency converter 1 is improved, and coordinates operating mode to need to realize conveyer full distance speed regulating energy-conservation.
Further, described variable frequency control speed-regulating type slat conveyer adopts parameter of electric machine identification technique and speed sensorless vector control technology, when performing offline parameter Self-tuning System, can under motor static position, realize the quick and precisely identification of required motor parameter, automatically complete the automatic adjusting of closed loop control parameters, dead area compensation parameter etc., the default parameters after adjusting can meet operating needs.Possess heavily loaded soft start capacity, detent torque can reach more than 2.2 times, and direct torque precision is high, fast response time, and without the need to speed sensor, and starting process is level and smooth without impacting, and reliability is high.In addition, because the parameter of electric machine is comparatively large by the impact of temperature, establishes motor thermal model in the utility model control software design, realize the estimation of motor winding temperature, and realize the compensation of the parameter of electric machine according to motor winding temperature, optimize electric machine control performance.
Further, described variable frequency control speed-regulating type slat conveyer frequency converter 1 is integrated in same control box with master controller 2, adopts LCDs operation, possesses slat conveyer special manual operational mode, facilitate concrete operations.The control technology that the utility model adopts is advanced, and emergency protection strategy is perfect, ensures the High Performance of conveyor apparatus and lasting safe operation.Avoid chain rupture or overload burning motor, extension device service life, improve production security.
The advantage that the utility model has is: considered the problem of each side, and carried out targeted design.System architecture is clear, and production technology is easy to realize; Slat conveyer realizes heavy-duty low-speed soft start, without the impact of electrical network with machinery, tackles different operating mode and regulates slat conveyer running velocity in real time, omnidistance energy-conservation; Reliability is high; Advanced technology; Have multi-machine interaction controlling functions, power balance when realizing multiple unit operation controls automatically simultaneously, and exert oneself evenly, carrying load ability is strong; Power density is high, and volume is little, is convenient to in-site installation; Modularized design scheme, function piecemeal, interface are clear, extendability is strong, and real-time is good, are convenient to assembling and safeguard; Reliability is high; The dv/dt output filter of the utility model targeted design, the long distance meeting 1000 meters drives requirement, and on motor winding insulation without impact; Also possesses scrapper conveyor special manual operational mode, convenient tune chain and other attended operation.
Fig. 1 integral layout schematic diagram of the present utility model;
Fig. 2 frequency converter 1NPC three-level topology power circuit principle schematic (diode clamp formula);
Fig. 3 is Double-loop Speed Control schematic diagram;
Fig. 4 is master & slave control system (TLBS) schematic diagram;
Detailed description of the invention
In figure: 1. frequency converter, 2. master controller, 3. chain wheel assembly, 4. close scraper chain, 5. retarder, 6. tie cable, 7 motors,
L: conveyor lengths (being not less than face length 100 to 350 meters)
Z1: rectifier
L1, L2: reactor (capacitor filtering)
KM2: AC contactor
D1, D2, D3, D4, D5, D6: high-voltage diode
ASR: rpm governor;
ATL: direct torque ring;
INV: inverter;
PG: coder;
F/D: frequency/digital conversion.
As shown in Figure 1, frequency converter 1, master controller 2 form the driving device of slat conveyer by tie cable 6 and motor 7, retarder 5, and gear sequences is frequency converter 1, master controller 2+ motor 7+ retarder 4+ chain wheel assembly 3; Drive closed scraper chain 4 that coal is transported to head by tail at the driving lower sprocket assembly 3 of driving device with the speed of setting, and be unloaded to transportation burden elevating conveyor completing slat conveyer.Master controller 2 controls low-converter 1 can multimachine cooperation control, wherein main frame tail frequency converter, from machine head frequency converter, between the two by Can bus communication, frequency converter 1 and master controller 2 are integrated in same control box, employing LCDs operates, and possesses slat conveyer special manual operational mode, facilitates concrete operations.Frequency converter 1 adopts speed sensorless vector control technology, the Driving Torque of the adjustment conveyer head tail motor that become more meticulous according to conveyer operating mode whole process by master controller 2.Make conveyer possess heavily loaded soft start capacity simultaneously, in conveyer operational process, user can regulate conveyor speed in real time according to load variations.
Should be appreciated that above is illustrative and not restrictive by preferred embodiment to the detailed description that the technical solution of the utility model is carried out.Those of ordinary skill in the art can modify to the technical scheme described in embodiment on the basis of reading the utility model specification sheets, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model embodiment technical scheme.
Claims (3)
1. a variable frequency control speed-regulating type slat conveyer, comprise slat conveyer cell body, chain-drive section, drive end unit, chain wheel assembly (3), close scraper chain (4), retarder (5), motor (7), it is characterized in that, also comprise frequency converter (1), master controller (2) and tie cable (6) and form; Frequency converter (1), master controller (2) change motor (7) synchronizing frequency by tie cable (6) and realize motor (7) speed governing; Motor (7) output shaft is connected with retarder (5) input end by coupler, retarder (5) mouth Direct driver chain wheel assembly (3) rotates with the speed set, and drives closed scraper chain (4) that coal is transported to chain-drive section by drive end unit;
Frequency converter (1) is made up of jointly head frequency converter and tail frequency converter two parts, frequency converter core devices is IGBT and driver module thereof, adopt NPC (diode clamp formula) three-level topology main circuit scheme, the tail frequency converter wherein controlling tail motor (7) is main frame, the head frequency converter controlling head motor (7) is from machine, and both adopt the mode of operation based on principal and subordinate's data communication of Can bus; Master controller (2) modular design, adopts Collaborative Control mode;
Frequency converter (1) forms the Double-loop Speed Control of torque inner ring, rotating speed outer shroud together with master controller (2).
2. a kind of variable frequency control speed-regulating type slat conveyer according to claim 1, it is characterized in that master controller (2) controls low-converter (1) can multimachine cooperation control, wherein main frame tail frequency converter, from machine head frequency converter, between the two by Can bus communication.
3. a kind of variable frequency control speed-regulating type slat conveyer according to claim 1, it is characterized in that frequency converter (1) and master controller (2) are integrated in same control box, employing LCDs operates, possess slat conveyer special manual operational mode, facilitate concrete operations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520112251.9U CN204802572U (en) | 2015-02-13 | 2015-02-13 | Frequency conversion control speed governing type scraper conveyor |
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| CN201520112251.9U CN204802572U (en) | 2015-02-13 | 2015-02-13 | Frequency conversion control speed governing type scraper conveyor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555082A (en) * | 2017-09-26 | 2018-01-09 | 中国矿业大学 | A kind of intelligent water-cooled straight drive system of drag conveyor permanent-magnetic variable-frequency |
| CN109649997A (en) * | 2019-01-26 | 2019-04-19 | 华北科技学院 | A kind of mine scraper conveyer intelligent high-efficiency drive system |
| CN109649956A (en) * | 2019-01-26 | 2019-04-19 | 华北科技学院 | A kind of mine scraper conveyer driving control system |
| CN109878989A (en) * | 2019-02-27 | 2019-06-14 | 华北科技学院 | Mine scraper conveyer intelligent high-efficiency drive system control method |
| CN110271836A (en) * | 2018-12-03 | 2019-09-24 | 中煤张家口煤矿机械有限责任公司 | A kind of coal mine isomery driving scraper conveying equipment control system and method |
| CN110271812A (en) * | 2018-11-26 | 2019-09-24 | 中煤张家口煤矿机械有限责任公司 | A kind of transfer conveyor tail and forward groove scraper reloader with driving device |
| CN110386410A (en) * | 2019-07-19 | 2019-10-29 | 安徽理工大学 | A kind of drag conveyor magnetic coupling multimachine powered balance control system |
| CN110950002A (en) * | 2019-10-16 | 2020-04-03 | 焦作煤业（集团）新乡能源有限公司 | Operation control method of high-voltage variable-frequency main coal flow intelligent conveying system |
| CN111495570A (en) * | 2020-03-23 | 2020-08-07 | 天津中新智冠信息技术有限公司 | Automatic rotating speed adjusting device and method for shallow groove scraper |
| CN114013954A (en) * | 2021-12-15 | 2022-02-08 | 国家能源集团乌海能源有限责任公司 | Automatic power balancing method and system based on scraper conveyor multi-loop frequency converter |
| CN114988022A (en) * | 2022-05-20 | 2022-09-02 | 国家能源集团煤焦化有限责任公司 | Dual-drive scraper conveyor |
-
2015
- 2015-02-13 CN CN201520112251.9U patent/CN204802572U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555082A (en) * | 2017-09-26 | 2018-01-09 | 中国矿业大学 | A kind of intelligent water-cooled straight drive system of drag conveyor permanent-magnetic variable-frequency |
| CN107555082B (en) * | 2017-09-26 | 2024-01-26 | 中国矿业大学 | Intelligent water-cooled scraper conveyor permanent magnet variable frequency direct-drive system |
| CN110271812A (en) * | 2018-11-26 | 2019-09-24 | 中煤张家口煤矿机械有限责任公司 | A kind of transfer conveyor tail and forward groove scraper reloader with driving device |
| CN110271836B (en) * | 2018-12-03 | 2023-08-22 | 中煤张家口煤矿机械有限责任公司 | Control system and method for heterogeneous driving scraper conveying equipment of coal mine |
| CN110271836A (en) * | 2018-12-03 | 2019-09-24 | 中煤张家口煤矿机械有限责任公司 | A kind of coal mine isomery driving scraper conveying equipment control system and method |
| CN109649997A (en) * | 2019-01-26 | 2019-04-19 | 华北科技学院 | A kind of mine scraper conveyer intelligent high-efficiency drive system |
| CN109649956A (en) * | 2019-01-26 | 2019-04-19 | 华北科技学院 | A kind of mine scraper conveyer driving control system |
| CN109878989A (en) * | 2019-02-27 | 2019-06-14 | 华北科技学院 | Mine scraper conveyer intelligent high-efficiency drive system control method |
| CN110386410A (en) * | 2019-07-19 | 2019-10-29 | 安徽理工大学 | A kind of drag conveyor magnetic coupling multimachine powered balance control system |
| CN110950002A (en) * | 2019-10-16 | 2020-04-03 | 焦作煤业（集团）新乡能源有限公司 | Operation control method of high-voltage variable-frequency main coal flow intelligent conveying system |
| CN111495570A (en) * | 2020-03-23 | 2020-08-07 | 天津中新智冠信息技术有限公司 | Automatic rotating speed adjusting device and method for shallow groove scraper |
| CN114013954A (en) * | 2021-12-15 | 2022-02-08 | 国家能源集团乌海能源有限责任公司 | Automatic power balancing method and system based on scraper conveyor multi-loop frequency converter |
| CN114013954B (en) * | 2021-12-15 | 2023-08-18 | 国家能源集团乌海能源有限责任公司 | Power automatic balancing method and system based on multi-loop frequency converter of scraper conveyor |
| CN114988022A (en) * | 2022-05-20 | 2022-09-02 | 国家能源集团煤焦化有限责任公司 | Dual-drive scraper conveyor |
| CN114988022B (en) * | 2022-05-20 | 2023-10-03 | 国家能源集团煤焦化有限责任公司 | Dual-drive scraper conveyor |
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