CN203095055U - Belt conveyer control system capable of automatically adjusting belt speed according to material flow or material level - Google Patents

Belt conveyer control system capable of automatically adjusting belt speed according to material flow or material level Download PDF

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Publication number
CN203095055U
CN203095055U CN 201220632363 CN201220632363U CN203095055U CN 203095055 U CN203095055 U CN 203095055U CN 201220632363 CN201220632363 CN 201220632363 CN 201220632363 U CN201220632363 U CN 201220632363U CN 203095055 U CN203095055 U CN 203095055U
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CN
China
Prior art keywords
belt
belt conveyer
control
plc
sensor
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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.)
Expired - Fee Related
Application number
CN 201220632363
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Chinese (zh)
Inventor
王学勤
张炳林
任海兰
郑孝平
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LUOYANG YUANCHUANG ELECTRIC CO Ltd
SHANXI SANYUAN COAL INDUSTRY Co Ltd
Original Assignee
LUOYANG YUANCHUANG ELECTRIC CO Ltd
SHANXI SANYUAN COAL INDUSTRY Co Ltd
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Filing date
Publication date
Application filed by LUOYANG YUANCHUANG ELECTRIC CO Ltd, SHANXI SANYUAN COAL INDUSTRY Co Ltd filed Critical LUOYANG YUANCHUANG ELECTRIC CO Ltd
Priority to CN 201220632363 priority Critical patent/CN203095055U/en
Application granted granted Critical
Publication of CN203095055U publication Critical patent/CN203095055U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a belt conveyer control system capable of automatically adjusting belt speed according to material flow or material level and belongs to a belt conveyer control technique. The belt conveyer control system capable of automatically adjusting the belt speed according to the material flow or the material level comprises a frequency conversion system, a PLC (Programmable Logic Controller) system, a monitoring system and a detection system. The frequency conversion system comprises a power supply leading-in device, a power supply feeding device and a frequency converter. The PLC system comprises a control supply leading-in device, a control supply feeding system and a PLC device. The monitoring system comprises an operating board and a display screen. The detection system comprises a material sensor, wherein the material sensor can be a non-contact sensor. The control system can reasonably set the running speed of a belt conveyer according to the magnitude of the material flow or the material level and the running state of a preceding-stage conveyer in a manner of setting time and motor current as conditions, and can automatically adjust the belt speed by controlling the output frequency of the frequency converter.

Description

Press the belt conveyer control system of mass flow or material level automatically regulating belt speed
Technical field
The utility model belongs to the belt conveyer control technology, proposes a kind of belt conveyer control system of pressing mass flow or material level automatically regulating belt speed, is mainly used in dragging and controlling big-and-middle-sized belt conveyer.
Background technology
In the control system of big-and-middle-sized belt conveyer, adopt frequency converter to drag in a large number, in fact these frequency converters just play the effect of soft start, can not automatically regulate belt speed according to mass flow size of being carried or material level height, mainly there is following shortcoming: 1) do not having under the artificial situation that participates in controlling, no matter having or not or what of material, belt conveyer often is in the high-speed cruising state, particularly belt abrasion loss quickening of rotatable parts to belt conveyer, influence the service life of these parts, increase the probability and the maintenance downtime of device fails, influence is produced; 2) because rotatable parts particularly belt etc. shorten service life, increased spare part expense and operating cost; 3) increase potential safety hazard; 4) power consumption; 5) do not give full play to the flexible speed adjusting performance of frequency converter, automatization level is low.
Summary of the invention
The utility model proposes a kind of belt conveyer control system by mass flow or material level automatically regulating belt speed, this control system can be according to the flow size or the material level height of the material of being carried such as coal, ore and other materials, belt conveyer is carried out automatic guidance, realize unattended automatic operating.
The utility model takes following technical scheme to finish its goal of the invention: a kind of belt conveyer control system of pressing mass flow or material level automatically regulating belt speed includes frequency conversion system, PLC system, monitored control system, checking system.
Described frequency conversion system includes: electrical source of power line leading device, electrical source of power feeder equipment, frequency converter provide the ac power power supply of frequency and voltage variable for the electrical motor of points driving for belt conveyor; The stator winding of electrical motor is received the mouth of frequency converter, the input end of frequency converter links to each other with the mouth of electrical source of power feeder equipment, the input end of electrical source of power feeder equipment links to each other with the mouth of electrical source of power line leading device, and the input end of electrical source of power line leading device links to each other with the power electrical network.
Described PLC system includes: control electric power incoming line device, control power feed device and PLC device; The power input of PLC device links to each other with the mouth of control power feed device, and the input end of control power feed device links to each other with the mouth of control electric power incoming line device, and the input end of control electric power incoming line device is connected on the electrical network of control power supply.
Described monitored control system includes: operator's station and read-out; Switch, button are housed on the operator's station and link to each other, be used for opening, stopping of under manual mode control belt conveyer, and signal lamp and display instrument are housed, be used to show the running state and the important parameter of belt conveyer with the PLC input port; Read-out is computing machine or industrial computer, by the mode of network communication, carries out information exchange with PLC, frequency converter, belt conveying protector; On read-out, can observe the voltage of key parameters and signal of interest situation such as electrical motor; electric current; the action situation of frequency and belt running velocity and belt conveying protector; read-out is finished the real-time demonstration to the key parameters and the signal of interest situation of belt conveyer whole service process; real time recording etc.; the built-in communication network interface card of read-out or in the PLC device, the network switch is set; and and PLC; frequency converter and mine local area network form network communication; described belt conveyer and control system thereof are carried out remote diagnosis and Long-distance Control, realize the automatic operating and the unmanned of belt conveyer.
Described checking system includes the material sensor; The material sensor adopts noncontacting proximity sensor.
If material comes from the previous stage belt conveyer, the material sensor should be installed in the central region of previous stage belt conveyer, with the head of the previous stage belt conveyer segment distance of being separated by, so that allow belt conveyer at the corresponding levels be arranged the enough reaction time, and the process condition of sensor is set to load-transfer device in the speed adjustment process.
For the belt conveyer of multistage transmission, can add the mass flow sensor and be located at the zone that mass flow or material level can accurately be reflected in the material source.
If material comes from feed bin, the material sensor should be installed in the top of feed bin, can both detect the place of material all the time, and add safeguard procedures in order to avoid the material sensor is pounded by material or collided with and damage.
The material sensor want at least can reaction mass have or do not have.
With the material signal with prime conveyer running state is sent to read-out and in PLC, by the PLC device, set the running velocity of belt conveyer, the output frequency of control frequency converter, thus belt speed is regulated automatically.
In control system of the present utility model, a frequency converter drags an electrical motor, form the driving style of " one-to-one ", for situation by the common belt conveyer that drives of multiple motors, the quantity of frequency converter is identical with electrical motor, adopt main between many frequency converters, from control structure, being provided with wherein, a frequency converter is a main frame, other frequency converters are slave, be provided with the control of speed and current closed-loop in the main frame, slave is followed the frequency and the electric current variation of main frame and is had the current closed-loop function, like this, under the situation of a belt conveyer of the common driving of multiple motors, PLC just can reach the purpose of belt conveyer being carried out speed setting as long as the frequency converter as main frame is carried out output frequency to be regulated, and, can guarantee the speed unanimity of multiple motors, the electric current unanimity reaches the purpose of each branch's motor-output unanimity, with the speed adjusting performance that improves belt conveyer and improve the life-span that belt conveyer comprises belt.
Above-mentioned control method of pressing the belt conveyer control system of mass flow or material level automatically regulating belt speed:
The condition that belt speed is regulated main foundation is:
1) material level of previous stage belt conveyer mass flow or material level, prime feed bin;
2) running state of previous stage conveyer;
3) control duration, increase when detecting prime mass flow or material level, in time start and quicken belt conveyer at the corresponding levels, reduce even emptying when detecting prime mass flow or material level, a period of time of then delaying time is reduced the speed even the idle or temporary transient shutdown of belt conveyer at the corresponding levels;
4) be that the electric current of electrical motor is reflected on the belt conveyer at the corresponding levels the situation of material in real time by the frequency converter outgoing current, as one of idle-speed control or temporary transient condition of shutting down, electrical motor moves a period of time under the no-load current state, the material emptying of belt conveyer at the corresponding levels promptly is described, belt conveyer at the corresponding levels just can idle or temporary transient shutdown;
When described material sensor is installed in the middle part of previous stage belt conveyer, or the material sensor added be located at the material source can accurately reflect mass flow or material level regional the time, when of the appearance of material sensor to material, start belt conveyer at the corresponding levels and acceleration immediately, belt speed is directly proportional substantially with mass flow or material level, the big more belt speed of flow or material level is high more, and flow or material level acquire a certain degree, and belt conveyer moves with command speed; The time-delay of the reduction of flow or material level and process certain hour, just allow belt speed reduce, when the material sensor little of to a certain degree and through the time-delay of certain hour to flow or material level, belt conveyer at the corresponding levels is with idle, when the material sensor is zero to be the emptying state to flow or material level, the electric current that reads from frequency converter simultaneously is the no-load current of electrical motor, after the time-delay of certain hour, and belt conveyer operation suspension at the corresponding levels; Belt speed is pressed the also gradable control of mass flow size or material level height, when flow or material level acquire a certain degree, is high-speed cruising with command speed then, when flow or material level are reduced to a certain degree, then with low cruise, when flow or material level are zero, then idle or operation suspension; For the belt conveyer of multistage transmission, other belt conveyer speed settings at different levels are same as above, and the order of startups at different levels or acceleration is along contrary logistics direction, and the order of decelerations at different levels or shutdown is along suitable logistics direction;
When described material sensor is installed in the top of feed bin, when the material sensor has material to feed bin, start belt conveyer and low speed or idle, slat conveyer is opened, belt conveyer then quickens and moves with command speed, not having material when the material sensor to feed bin is the emptying state, belt conveyer is decelerated to idle, slat conveyer is out of service, the electric current that reads from frequency converter simultaneously is the no-load current of electrical motor, after the time-delay of certain hour, the belt conveyer operation suspension.
The utility model proposes a kind of belt conveyer control system, can satisfy the needs of various big-and-middle-sized belt conveyer controls by mass flow or material level automatically regulating belt speed.Compared to existing known technology, has the function that the speed of belt conveyer is automatically adjusted according to what of mass flow or material level, reduce the wearing and tearing of belt conveyer rotating element, thereby the prolongation belt conveyer is the life-span of belt particularly, reduce the belt conveyer operating costs, improve the safety in production ability, and, saving energy and reduce the cost meets national industrial policies, has obvious social and economic benefits.
Description of drawings
Fig. 1, Fig. 2 are functional block diagram of the present utility model, and material comes from the previous stage belt conveyer among Fig. 1, and material comes from feed bin among Fig. 2.
Among the figure, 1. electrical source of power line leading device, 2,3. electrical source of power feeder equipment; 4. control electric power incoming line device, 5. control power feed device, 6,7. frequency converter; 8.PLC device, 9. operator's station, 10. read-out; 11. the belt conveying protector, 12. level sensors, 13,14. electrical motors; 15. belt conveyer at the corresponding levels; 16a. the previous stage belt conveyer, 16b. slat conveyer, 17. feed bins.
The specific embodiment
In conjunction with the accompanying drawings the utility model embodiment is illustrated:
In the drawings, a kind of belt conveyer control system by mass flow or material level automatically regulating belt speed that the utility model proposes includes frequency conversion system, PLC system, monitored control system and checking system.
Described frequency conversion system includes: electrical source of power line leading device (1), electrical source of power feeder equipment (2 and 3), frequency converter (6 and 7), the ac power power supply of frequency and voltage variable is provided for the electrical motor (13 and 14) of points driving for belt conveyor (15), the stator winding of electrical motor (13) and (14) is received the mouth of frequency converter (6) and (7) respectively, the input end of frequency converter (6) and (7) links to each other with the mouth of electrical source of power feeder equipment (2) and (3) respectively, the input end of electrical source of power feeder equipment (2) and (3) connects together and links to each other with the mouth of electrical source of power line leading device (1), and the input end of electrical source of power line leading device (1) links to each other with the power electrical network.
Described PLC system includes: control electric power incoming line device (4), control power feed device (5) and PLC device (8); The power input of PLC device (8) links to each other with the mouth of control power feed device (5), the input end of control power feed device (5) links to each other with the mouth of control electric power incoming line device (4), and the input end of control electric power incoming line device (4) is connected on the electrical network of control power supply.
Described monitored control system includes: operator's station (9) and read-out (10); Operator's station is equipped with switch on (9); devices such as button also link to each other with the PLC input port; be used under manual mode, controlling opening of belt conveyer (15); stop; and signal lamp and display instrument be housed; be used to show the running state and the important parameter of belt conveyer (15); read-out is computing machine or industrial computer; mode by network communication; with PLC; frequency converter; the belt conveying protector carries out information exchange; on read-out, can observe the voltage of key parameters and signal of interest situation such as electrical motor (13) and (14); electric current; the action situation of frequency and belt running velocity and belt conveying protector (11) etc.; read-out is finished the key parameters of belt conveyer at the corresponding levels (15) whole service process and the real-time demonstration of signal of interest situation; real time recording etc.; can be provided with the communication network interface card or in the PLC device, the network switch is set in the read-out (10); and and PLC; frequency converter and mine local area network form network communication; belt conveyer at the corresponding levels (15) and control system thereof are carried out remote diagnosis and Long-distance Control, realize the automatic operating and the unmanned of belt conveyer (15).
Described checking system includes material sensor (12); Material sensor (12) can adopt noncontacting proximity sensor (such as but not limited to super sonic or radar sensor); The operating state signal of the signal of material sensor (12) and previous stage belt conveyer (16a) or slat conveyer (16b) is sent to read-out and passes among the PLC, by the PLC device, flow or material level according to material, and the running state of previous stage belt conveyer (16a) or slat conveyer (16b), set the running velocity of belt conveyer at the corresponding levels (15), by the output frequency of control frequency converter (6) and (7), thereby belt speed is automatically adjusted.
In Fig. 1, material comes from previous stage belt conveyer (16a), the material sensor is installed in the middle part of previous stage belt conveyer (16a), head away from previous stage belt conveyer (16a) has a segment distance, so that allow belt conveyer at the corresponding levels (15) be arranged the enough reaction time in the speed adjustment process, and the process condition of sensor is set to load-transfer device, for the belt conveyer of multistage transmission, can add mass flow sensor (12) and be located at the zone that mass flow or material level can accurately be reflected in the material source.Detect the appearance of material when mass flow sensor (12), start belt conveyer at the corresponding levels (15) and acceleration immediately, belt speed can be directly proportional substantially with mass flow or material level, the big more belt speed of flow or material level is high more, flow or material level acquire a certain degree, belt conveyer at the corresponding levels (15) moves with command speed, the time-delay of the reduction of flow or material level and process certain hour, just allow belt speed reduce, to detect flow or material level little of to a certain degree and through the time-delay of certain hour when sensor (12), belt conveyer at the corresponding levels (15) is with idle, when sensor (12) detects flow or material level is zero to be the emptying state, the electric current that reads from frequency converter simultaneously is the no-load current of electrical motor, after the time-delay of certain hour, and belt conveyer at the corresponding levels (15) operation suspension; Belt speed is pressed mass flow size or the also gradable control of material level height; when flow or material level acquire a certain degree; be high-speed cruising then with command speed; when flow or material level little of to a certain degree; then with low cruise; when flow or material level is zero to be the emptying state, then with idle even temporary transient shutdown.For the belt conveyer of multistage transmission, the speed setting of other belt conveyers at different levels is same as above, and the order of startups at different levels or acceleration is along contrary logistics direction, and the order of decelerations at different levels or shutdown is along suitable logistics direction.
In Fig. 2, material comes from feed bin, the material sensor is installed in the top of feed bin (17), all the time can both detect the place of material, and add safeguard procedures in order to avoid material sensor (12) is pounded by material or collided with and damage, material sensor (12) want at least can reaction mass have or do not have, when material sensor (12) detects feed bin material is arranged, start belt conveyer at the corresponding levels (15) and low speed or idle, slat conveyer (16b) is opened, belt conveyer (15) then quickens until moving with command speed, when detecting feed bin, material sensor (12) do not have to expect to be the emptying state, belt conveyer at the corresponding levels (15) is decelerated to idle, (16b) is out of service for slat conveyer, the electric current that reads from frequency converter simultaneously is the no-load current of electrical motor, after the time-delay of certain hour, belt conveyer at the corresponding levels (15) but operation suspension.
Frequency converter (6) and (7) drive motor (13) and (14) respectively, form the driving style of " one-to-one ", for belt conveyer (15) by the common driving of multiple motors, the quantity of frequency converter is identical with electrical motor, adopt main between many frequency converters, from mode, being provided with wherein, a frequency converter (as 7 among the figure) is a main frame, other frequency converters are slave, be provided with the control of speed and current closed-loop in the main frame, slave is followed the frequency and the electric current variation of main frame and is had the current closed-loop function, like this, under the situation of the common belt conveyer of driving of multiple motors (15), PLC regulates as long as the frequency converter as main frame is carried out output frequency, just can reach the purpose that belt conveyer at the corresponding levels (15) is carried out speed setting, and, can guarantee the speed unanimity of multiple motors, the electric current unanimity, reach the purpose of each branch's motor-output unanimity, with the speed adjusting performance that improves belt conveyer (15) and improve the life-span that belt conveyer comprises belt.
The above only is preferred embodiment of the present utility model, and protection domain of the present utility model is not limited thereto, and anyly all belongs within the utility model protection domain based on the equivalent transformation on the technical solutions of the utility model.

Claims (6)

1. belt conveyer control system of pressing mass flow or material level automatically regulating belt speed, it is characterized in that: described control system includes frequency conversion system, PLC system, monitored control system and checking system;
Described frequency conversion system includes: electrical source of power line leading device (1), electrical source of power feeder equipment (2,3), frequency converter (6,7) provide the ac power power supply of frequency and voltage variable for the electrical motor (13,14) of points driving for belt conveyor (15);
Described PLC system includes: control electric power incoming line device (4), control power feed device (5) and PLC device (8);
Described monitored control system includes: operator's station (9) and read-out (10), operator's station is equipped with switch on (9), button device also links to each other with the PLC input port, be used under manual mode, controlling opening of belt conveyer (15), stop etc., and signal lamp and display instrument be housed, be used to show the running state and the important parameter of belt conveyer (15), read-out (10) is computing machine or industrial computer, mode by network communication, with PLC, frequency converter, belt conveying protector (11) carries out information exchange, on read-out (10), can observe the voltage of key parameters and signal of interest situation such as electrical motor, electric current, the action situation of frequency and belt running velocity and belt conveying protector (11), read-out (10) are finished the key parameters of belt conveyer (15) whole service process and the real-time demonstration of signal of interest situation, real time recording; Be provided with the communication network interface card in the read-out (10) or in the PLC device, the network switch be set, and form network communication with PLC, frequency converter and mine local area network;
Described checking system includes material sensor (12); Material sensor (12) adopts noncontacting proximity sensor.
2. belt conveyer control system of pressing mass flow or material level automatically regulating belt speed according to claim 1, it is characterized in that: described material sensor (12) is installed in the middle part of previous stage belt conveyer (16a).
3. belt conveyer control system of pressing mass flow or material level automatically regulating belt speed according to claim 1 is characterized in that: the zone that material sensor (12) is arranged on the material source.
4. belt conveyer control system of pressing mass flow or material level automatically regulating belt speed according to claim 1, it is characterized in that: described material sensor (12) is installed in the top of feed bin (17).
5. belt conveyer control system of pressing mass flow or material level automatically regulating belt speed according to claim 1 is characterized in that: in the described frequency conversion system, and the corresponding electrical motor setting of frequency converter.
6. belt conveyer control system of pressing mass flow or material level automatically regulating belt speed according to claim 1, it is characterized in that: the frequency converter in the described frequency conversion system is some, the quantity of described frequency converter is identical with electrical motor; Described belt conveyer is by the common structure that drives of multiple motors, adopts master and slave control structure between many frequency converters.
CN 201220632363 2012-11-27 2012-11-27 Belt conveyer control system capable of automatically adjusting belt speed according to material flow or material level Expired - Fee Related CN203095055U (en)

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CN 201220632363 CN203095055U (en) 2012-11-27 2012-11-27 Belt conveyer control system capable of automatically adjusting belt speed according to material flow or material level

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Application Number Priority Date Filing Date Title
CN 201220632363 CN203095055U (en) 2012-11-27 2012-11-27 Belt conveyer control system capable of automatically adjusting belt speed according to material flow or material level

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103466284A (en) * 2013-09-16 2013-12-25 中国神华能源股份有限公司 Belt conveyor centralized control method and system
CN103640866A (en) * 2013-12-27 2014-03-19 上海烟草集团有限责任公司 Cut tobacco monitoring method and system in operation of flue-cured tobacco set
CN104444223A (en) * 2014-12-04 2015-03-25 成都智科立信科技有限公司 Industrial mining scraper conveyor device based on internet of things
CN104860030A (en) * 2015-05-14 2015-08-26 中煤张家口煤矿机械有限责任公司 Fully mechanized coal face coal flow monitoring and control system
CN107539750A (en) * 2017-08-15 2018-01-05 贵州省动能煤炭技术发展服务有限公司 Ribbon conveyer energy-saving control device
CN108147060A (en) * 2017-12-14 2018-06-12 太原理工大学 Multistage conveyer belt control method and device based on prediction control

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103466284A (en) * 2013-09-16 2013-12-25 中国神华能源股份有限公司 Belt conveyor centralized control method and system
CN103466284B (en) * 2013-09-16 2016-02-17 中国神华能源股份有限公司 Sealing-tape machine centralized control method and system
CN103640866A (en) * 2013-12-27 2014-03-19 上海烟草集团有限责任公司 Cut tobacco monitoring method and system in operation of flue-cured tobacco set
CN103640866B (en) * 2013-12-27 2017-08-04 上海烟草集团有限责任公司 A kind of pipe tobacco monitoring system in flue-cured tobacco group operating
CN104444223A (en) * 2014-12-04 2015-03-25 成都智科立信科技有限公司 Industrial mining scraper conveyor device based on internet of things
CN104860030A (en) * 2015-05-14 2015-08-26 中煤张家口煤矿机械有限责任公司 Fully mechanized coal face coal flow monitoring and control system
CN107539750A (en) * 2017-08-15 2018-01-05 贵州省动能煤炭技术发展服务有限公司 Ribbon conveyer energy-saving control device
CN108147060A (en) * 2017-12-14 2018-06-12 太原理工大学 Multistage conveyer belt control method and device based on prediction control
CN108147060B (en) * 2017-12-14 2019-07-09 太原理工大学 Multistage conveyer belt control method and device based on prediction control

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