CN101537272A - Thickener control system - Google Patents
Thickener control system Download PDFInfo
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- CN101537272A CN101537272A CN200910064432A CN200910064432A CN101537272A CN 101537272 A CN101537272 A CN 101537272A CN 200910064432 A CN200910064432 A CN 200910064432A CN 200910064432 A CN200910064432 A CN 200910064432A CN 101537272 A CN101537272 A CN 101537272A
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Abstract
The invention provides a thickener control system. An acquisition system of a field control cabinet sends electrical signals of operating state of the thickener through a control system, a storage system and an executive system so that a rotary bridge, a scrapping and collecting device and a hydraulic system of the thickener can automatically run according to programs; the field control cabinet is connected to a power source by a current collector; the electrical signals of operating state of the thickener are transmitted to a remote console by wireless communication, the remote console controls the field control cabinet by the wireless communication to control operation of the thickener so as to complete the rotary bridge control, the scrapping and collecting device control, the hydraulic system control, fault alarm and interlock control; and remote control, automatic control and manual control are provided. The system can automatically lift rakes one by one, realize mechanical pool cleaning function, avoid water discharge for cleaning, reduce waste, and greatly increase economic benefit of users. The remote operation realizes wireless communication between the rotary PLC control cabinet and a ground touch screen by Ethernet.
Description
Technical field
The invention belongs to technical field of electrical automatic control, be particularly useful in coal, chemical industry, building materials and the sewage disposal industry, a kind of thickener control system that suspension is concentrated and purifies.
Background technology
Thickener is widely used in the industry such as coal, chemical industry, building materials and sewage disposal, and suspension is concentrated and purifies.Particularly in today of the energy, shortage of resources, industries such as sewage disposal, concentrate extraction will be increasing to the demand of thickener.
Solid particle sedimentation under the gravity effect in the suspension in the concentration basin is separated solid-liquid, and top then is primary water.The sediment that is deposited on concentration basin bottom is scraped continuously and is collected at the bottom of the pond gape at center and discharge by scraping acquisition means, primary water then by the concentration basin downflow weir overflow collect in the pump house pond recycling.The feeder trough of material on the feed crane span structure enters central tube through feeding pipe, in constant-current stabilizer through the buffering after, the bigger particle of a part directly enters the decanting zone, bottom, precipitation in the awl hole that gathers materials, another part fine particle enters advection sedimentation in the pond through isocon radially, and most of material is deposited in the central area in pond, along with the revolution of rotating crane span structure, scrape acquisition means and secondary rake device the sludge of precipitation is scraped in the base cone hole, pond, discharge by the underflow pump.
Early stage electric control system is the relay-contactor control system, and is economical but control falls behind the operating maintenance difficulty.Along with the extensive use of programmable logic controller (PLC) PLC (Program Logic Control), the PLC control system has replaced the relay-contactor system; But because equipment is the center steering device, except that rotary disk basement is fixed on the concrete column of center, other primary clustering such as rotating disk, rotate crane span structure, scrape acquisition means and hydraulic drive mechanism etc. and be rotatable parts, so require electrical control cubicles must be installed on the rotating mechanism, current collecting equipment adopts safety sliding contact line convenient for installation and maintenance.Though the application of PLC control system has improved the stability of a system, still there are operating difficulties, problem such as maintenance inconvenience etc., so the raising of control system, improve and become the key point that improves the complete machine automatization level.
Summary of the invention
In view of the characteristics of thickener equipment, improve in the past that operating personnel need climb up the difficulty that the thickener main body is operated, the invention provides a kind of thickener control system, make operating personnel can be in the control room, ground operating equipment, and can the surveillance equipment operation.Its cost is low, function is complete, automaticity is high, convenient operating maintenance, high reliability and the strong special intelligent automated system of antijamming capability.
In order to realize the foregoing invention purpose, the present invention adopts technical scheme as described below:
Described thickener control system, comprise: field control cabinet, power supply, wireless telecommunications and remote console, the acquisition system of field control cabinet is with the signal of telecommunication of thickener running status, by control system, storage system, executive system, make thickener the rotation crane span structure, scrape acquisition means, hydraulic system and pass through program work automatically; The field control cabinet connects power supply by current collecting equipment; The signal of telecommunication of this thickener running status arrives remote console by wireless communication transmission, remote console is handled the operation that the field control cabinet is controlled thickener by wireless telecommunications, finishes: acquisition means control, HYDRAULIC CONTROL SYSTEM, fault alarm and chain control are controlled, scraped to the rotation crane span structure; And having this cabinet and Long-distance Control, the control of this cabinet divides again automatically and manually control.
Described thickener control system, the control system of field control cabinet are control PLC able to programme, and PLC gathers equipment ruuning situation by the PLC input module, control the running status of thickener then by program setting.
Described thickener control system, wireless telecommunications are wireless EPA wireless telecommunications, are made of wireless communication assembly and control system CPU, make rotary PLC control cabinet by the wireless telecommunications between EPA and ground touch screen; Wireless communication assembly comprises: wireless communication module W744 and wireless communication module W788, and by the IP address of communication guide setting wireless communication module W744, W788 and control system CPU.
Described thickener control system, EPA communication also can be made of as control system CPU and wireless communication assembly ethernet communication module CP243-1.
Described thickener control system, the executive system of field control cabinet is the electrohydraulic integration control system, comprising: the interface IO point control drive hydraulic motor that electrical system is carried by control able to programme PLC itself, the master who carries the rake motor and receive the cabinet face make signal; Be electrically connected the location and the driving of the raised position of each rake frame by DI/DO expansion module and DI expansion module; Hydraulic system is passed through two fluid motor-driven doube bridges by Hydraulic Station, hydraulic motor is provided with a synchronous valve, make the load balancing of two motors with synchronously, crane span structure is operated steadily, and can adjust the size of its flow, make and realize stepless time adjustment in the certain scope of being rotated in of crane span structure, its underflow density meets working condition requirement.
Described thickener control system, the acquisition system of field control cabinet is transferred to the DI expansion module by sensor each signal of telecommunication with the temperature of Hydraulic Station, liquid level, pressure.
Described thickener control system, remote console is connected and composed by the man-machine interface HMI touch-screen MP277 and the wireless communication module W788 in control room; Touch-screen is finished the supervision and the Long-distance Control of equipment, reflects equipment running status truly.
Described thickener control system is being inlayed the conductive tube ring and is being contacted with current-collector and constitute on the insulation teething ring of current collecting equipment by compression molding, the insulation teething ring is fixed on the central feeding tube, and current-collector is fixed in the crane span structure on the gains in depth of comprehension rotating disk by support; Service cable connects the conductive tube ring along hopper, and the conductive tube ring contacts with current-collector by cable and powers to the field control cabinet, and switch board is positioned on the crane span structure of rotation.
Because adopt aforesaid technical scheme, the present invention has following superiority:
This thickener control system has the advantages that to carry rake automatically one by one, can realize the clear pond of machinery function, avoids traditional pond method clearly that discharges water, and has reduced waste, and has saved the time, has improved user's economic benefit widely.Selection EPA wireless communication technique is realized the communication between rotary PLC control cabinet and ground touch screen.This is that anti-interference, radiation resistance is particularly suitable for on-the-spot abominable industrial environment by force because EPA is the leading network in the local area network applications in the world wide.In the application of industrial circle more and more widely, adopt the convenient whole factory automation system that inserts of EPA, promoted automatization level.This control system is successfully tried out in iron ore GNJ one 70 thickeners of shop, Wuhan Iron and Steel Plant Kingsoft.For applying of this equipment laid a good foundation.
Description of drawings
Fig. 1 is the system block diagram of the hardware platform of whole PLC core control system.
Fig. 2 is the schematic diagram that current collecting equipment connects.
Among the figure: the 1-crane span structure; The 2-cable; The 3-fixed support; The 4-current-collector; 5-central feeding tube; 6-conductive tube ring.
The specific embodiment
As shown in Figure 1, 2: this thickener control system mainly is by Programmable Logic Controller PLC control thickener equipment running status with thickener equipment ruuning situation; Finish the supervision and the Long-distance Control of equipment by touch-screen, reflect equipment running status truly; Promptly the signal of telecommunication of this thickener running status arrives remote console by wireless communication transmission, remote console is handled the operation that the field control cabinet is controlled thickener by wireless telecommunications, finishes the control of rotation crane span structure, scrapes acquisition means control, HYDRAULIC CONTROL SYSTEM, fault alarm and chain control.This system comprises: field control cabinet, power supply, wireless telecommunications and remote console, the acquisition system of field control cabinet is with the signal of telecommunication of thickener running status, by control system, storage system, executive system, make thickener the rotation crane span structure, scrape acquisition means, hydraulic system and pass through program work automatically; The field control cabinet connects power supply by current collecting equipment to be realized.
The control system of described field control cabinet is control PLC able to programme, and model is S7-200PLC, and control PLC able to programme gathers equipment ruuning situation by the PLC input module, controls the running status of thickener then by program setting.
Described wireless telecommunications are wireless EPA wireless telecommunications, control system CPU by wireless communication assembly and Programmable Logic Controller PLC constitutes, be core component, make rotary PLC control cabinet by the wireless telecommunications between EPA and ground touch screen; This is because EPA in the application of industrial circle more and more widely, adopts the convenient whole factory automation system that inserts of EPA, has improved the automatization level of full factory.The application of wireless communication technique on this equipment solved the trying situation of its " island of automation ".Wireless communication assembly selects for use Siemens wireless communication module W788-1PRO and W744-1PRO as communication part.And by the IP address of communication guide setting wireless communication module W744, W788 and control system CPU.
The also available ethernet communication module of described EPA communication CP243-1 constitutes as control system CPU and wireless communication assembly.Because of selecting control PLC model able to programme can only provide PPI, MPI, PROFIBUS-DP and free mouthful communication, so adopt a CP243-1 to be connected with the EPA communication that wireless communication assembly is seen as S7-200CPU for S7-200CPU.Be connected with S7200 ethernet communication module CP243-1 by EPA, and in programming software, utilize communication guide to set IP address with CP243-1, call in the program and get final product.
The executive system of described field control cabinet is the electrohydraulic integration control system, comprising: the interface IO point control drive hydraulic motor that electrical system is carried by control able to programme PLC itself, the master who carries the rake motor and receive the cabinet face make signal finish; But because of the location of the raised position of more than ten rake framves with drive and need a large amount of DI/DO modules, so increase location and the driving that two 16 DI/DO expansion modules and 16 DI expansion module are electrically connected the raised position of each rake frame; Hydraulic system is passed through two fluid motor-driven doube bridges by Hydraulic Station, hydraulic motor is provided with a synchronous valve, make the load balancing of two motors with synchronously, crane span structure is operated steadily, and can adjust the size of its flow, make and realize stepless time adjustment in the certain scope of being rotated in of crane span structure, its underflow density meets working condition requirement.
The acquisition system of described field control cabinet is transferred to the DI expansion module of control able to programme by sensor each signal of telecommunication with the temperature of Hydraulic Station, liquid level, pressure.Be that Hydraulic Station itself has signals such as temperature, liquid level, pressure, so adopt 16 DI expansion modules and 8 DI expansion modules;
Described remote console is connected and composed by the man-machine interface HMI touch-screen MP277 and the wireless communication module W788 in control room; The antenna of antenna arrangement on top, control room and crane span structure is at same horizontal plane.W744 and W788 utilize PST-Tool software set IP address.Touch-screen is finished the supervision and the Long-distance Control of equipment, reflects equipment running status truly.Consider the requirement of communication form, the vividness and the operability of picture in the selection of man-machine interface HMI, finally select the man-machine interface of MP277 for use as the control room.
So far constitute the hardware platform of the whole PLC core control system of thickener control system, adopted Siemens's hardware configuration to amount to: S7-200 CPU1,6 of all kinds of expansion modules, because of CPU 226CN can be with 7 expansion modules at most, 1 of man-machine interface.
The operation of this thickener control system:
At first power supply is powered to the field control cabinet by current collecting equipment.Inlaying conductive tube ring (6) on the insulation teething ring of current collecting equipment by compression molding and contacting formation with current-collector (4), the insulation teething ring is fixed on the central feeding tube (5), and current-collector (4) is fixed on the middle gains in depth of comprehension rotating disk of crane span structure (1) by support (3); Promptly connect conductive tube ring (6) by service cable along hopper, the conductive tube ring contacts with current-collector (4) by cable (2) and powers to the field control cabinet, and switch board is positioned on the crane span structure (1) of rotation.
One. rotation crane span structure control: the drive hydraulic motor of the interface IO point control hydraulic system that is carried by control PLC itself able to programme and the master who receives the cabinet face make signal; In hydraulic system, pass through the fluid motor-driven doube bridge, two hydraulic motors are shared a Hydraulic Station, keep the load balancing of two motors with synchronously by synchronous valve during operation, the even running that keeps crane span structure, and can adjust the size of its flow, make and realize stepless time adjustment in the certain scope of being rotated in of crane span structure, guarantee that underflow density meets working condition requirement.
Two. scrape the master that interface IO point control that acquisition means control carries by thickener control system PLC itself carries the rake motor and receive the cabinet face and make signal; Be electrically connected the location and the driving of the raised position of each rake frame by DI/DO expansion module and DI expansion module.
Scrape the course of work of acquisition means:
1. during the thickener operate as normal, all scrape cleaning shoe on the acquisition means in lowest order work.
2. along with the change of thickness increase of sludge precipitation or thickener material, operation oil circuit oil pressure increases
A. when pressure surpassed lifting setting value SP2, pressure sensor was converted to the signal of telecommunication to fuel injection pressure signal, sent instruction by PLC control, made the hydraulic cylinder action, will scrape acquisition means and be promoted to certain altitude;
The input harvester be with the acquisition system of thickener equipment ruuning situation by the field control cabinet by sensor each electrical signal collection with the temperature of Hydraulic Station, liquid level, pressure, be transferred to the DI expansion module.By the setting of Programmable Logic Controller PLC program, control the operation of thickener equipment then.Be the signals such as temperature, liquid level, pressure of Hydraulic Station itself, adopt 16 DI expansion modules and 8 DI expansion module to gather; Send instruction by PLC control, be electrically connected the location and the driving of the raised position of each rake frame by DI/DO expansion module and DI expansion module.Make the hydraulic cylinder action, will scrape acquisition means and be promoted to certain altitude.
B. reduce to setting pressure SP2 when following when pressure, stop to carry rake, scrape acquisition means and just work in this position;
3. along with the underflow discharge, oil pressure descends,
A. when pressure subnormal pressure setting value SP1, mud scraper can drop to the extreme lower position operate as normal.The electric during this period delay protection that is provided with can not occur promptly carrying and promptly fall phenomenon.
B. as occur unusually, when pressure is increased to the highest setting value SP3, mud scraper will rise to the top stop bit,
C. stop when moving, when breaking down, the concurrent visual alarm of speaking; Treat the operation of to start shooting after the abnormality processing.
4. when needs stopped to scrape the mud walking, each cleaning shoe was promoted to extreme higher position--the water surface automatically.
5. when restarting travelling mechanism; respectively scrape acquisition means and drop to working depth while turning round--at the bottom of the pond; and set inboard first and scrape acquisition means and drop to the operating position earlier and scrape the bricklayer and do; remaining is scraped acquisition means and reduces to the operating position one by one; so just avoid starting and impact, equipment is well protected.
According to equipment control and actual performance requirement, equipment is provided with this cabinet and Long-distance Control, and the control of this cabinet divides again automatically and manually control.
Manual mode: by action button, change-over switch on the switch board, but the operation of Artificial Control thickener, stop, carrying rake, fall operation such as rake, can realize the height location of single rake frame.Use this working method when overhaul of the equipments, will harrow frame and be promoted to the extreme higher position, concentration basin does not discharge water or puts the repair and maintenance that low amounts of water just can realize single rake frame; W744 is arranged in the switch board that rotates with crane span structure, and antenna arrangement is in gantry top.W788 is arranged on the operating desk of control room, ground, and the antenna of antenna arrangement on top, control room and crane span structure is at same horizontal plane.The external omnidirectional antenna ANT795-6MR that selects for use communication distance can reach 100 meters is arranged on the crane span structure;
Automated manner: setting SP1 by pressure controller is that minimum working pressure, SP2 are that high warning of pressure and SP3 are that pressure height height is shut down, and its signal is delivered to respectively among the PLC, by walking of procedure auto-control device and lifting.Simultaneously in the PLC system; be provided with fault latch function and walking overload, motor overload, lifting overtime, near perfect defencive functions such as switch faults; corresponding each protection; the PLC system all can latch the reason of accident timely and effectively behind the system-down; keep corresponding sound and light alarm signal; be professional's repair apparatus, find out that cause of accident provides convenience.
The remote monitoring mode: the user can finish signal monitoring by touch-screen at far-end operation platform (operating rooms in 100 meters scopes), state indication, the filing of warning, fault and important parameter etc.Long-distance Control is mainly realized by wireless telecommunications.In this system, mainly adopted the wireless communication module W788 and the W744 of Siemens to realize communication, as follows:
Because the effective communication of the omnidirectional antenna ANT795-4MR that W744 carries distance is 30 meters, and the diameter of thickener is 70 meters, and the crane span structure rotating operation, so the external omnidirectional antenna ANT795-6MR that selects for use communication distance can reach 100 meters is arranged on the crane span structure; Be connected with S7200 ethernet communication module CP243-1 by EPA, and in programming software, utilize communication guide to set IP address with CP243-1, call in the program and get final product.Have touch-screen MP277 to be connected with W788 in the control room, the antenna of antenna arrangement on top, control room and crane span structure is at same horizontal plane.W744 and W788 utilize PST-Tool software set IP address.
It is the same that to just look like direct use Ethernet netting twine couple together PLC and touch-screen in the realization of these wireless telecommunications, can make the operator can be by real-time parameter, to equipment with produce and can in time understand, at any time production effectively adjusted.The operating personnel of breaking down when reporting to the police press breaking alarm behind the alert button that disappears.Do not get rid of yet as internal fault at the appointed time, warning system can restart and start alarm, in time fixes a breakdown to urge operating personnel or maintenance personal.Alarm automatically terminates after equipment recovers normally.For example when walking or carry eye-catching literal can appear on touch-screen when raking off existing fault, picture is pointed out, but operator's clear failure reason, position, convenient for maintaining.
Native system has the advantages that to carry rake automatically one by one, can realize the clear pond of machinery function, avoids traditional pond method clearly that discharges water, and has reduced waste and shown landing the time of having saved, and has improved user's economic benefit widely.
Claims (8)
1, a kind of thickener control system, it is characterized in that: comprising: field control cabinet, power supply, wireless telecommunications and remote console, the acquisition system of field control cabinet is with the signal of telecommunication of thickener running status, by control system, storage system, executive system, make thickener the rotation crane span structure, scrape acquisition means, hydraulic system and pass through program work automatically; The field control cabinet connects power supply by current collecting equipment; The signal of telecommunication of this thickener running status arrives remote console by wireless communication transmission, remote console is handled the operation that the field control cabinet is controlled thickener by wireless telecommunications, finishes: acquisition means control, HYDRAULIC CONTROL SYSTEM, fault alarm and chain control are controlled, scraped to the rotation crane span structure; And having this cabinet and Long-distance Control, the control of this cabinet divides again automatically and manually control.
2, thickener control system according to claim 1, it is characterized in that: the control system of field control cabinet is control PLC able to programme, PLC gathers equipment ruuning situation by the PLC input module, control the running status of thickener then by program setting.
3, thickener control system according to claim 1, it is characterized in that: wireless telecommunications are wireless EPA wireless telecommunications, constitute by wireless communication assembly and control system CPU, make rotary PLC control cabinet by the wireless telecommunications between EPA and ground touch screen; Wireless communication assembly comprises: wireless communication module W744 and wireless communication module W788, and by the IP address of communication guide setting wireless communication module W744, W788 and control system CPU.
4, thickener control system according to claim 3 is characterized in that: the EPA communication also can be made of as control system CPU and wireless communication assembly ethernet communication module CP243-1.
5, thickener control system according to claim 1, it is characterized in that: the executive system of field control cabinet is the electrohydraulic integration control system, comprising: the interface IO point control drive hydraulic motor that electrical system is carried by control able to programme PLC itself, the master who carries the rake motor and receive the cabinet face make signal; Be electrically connected the location and the driving of the raised position of each rake frame by DI/DO expansion module and DI expansion module; Hydraulic system is passed through two fluid motor-driven doube bridges by Hydraulic Station, hydraulic motor is provided with a synchronous valve, make the load balancing of two motors with synchronously, crane span structure is operated steadily, and can adjust the size of its flow, make and realize stepless time adjustment in the certain scope of being rotated in of crane span structure, its underflow density meets working condition requirement.
6, thickener control system according to claim 1 is characterized in that: the acquisition system of field control cabinet is transferred to the DI expansion module by sensor each signal of telecommunication with the temperature of Hydraulic Station, liquid level, pressure.
7, thickener control system according to claim 1 is characterized in that: remote console is connected and composed by the man-machine interface HMI touch-screen MP277 and the wireless communication module W788 in control room; Touch-screen is finished the supervision and the Long-distance Control of equipment, reflects equipment running status truly.
8, thickener control system according to claim 1, it is characterized in that: inlaying conductive tube ring (6) on the insulation teething ring of current collecting equipment by compression molding and contacting formation with current-collector (4), the insulation teething ring is fixed on the central feeding tube (5), and current-collector (4) is fixed on the middle gains in depth of comprehension rotating disk of crane span structure (1) by support (3); Service cable connects conductive tube ring (6) along hopper, and the conductive tube ring contacts with current-collector (4) by cable (2) and powers to the field control cabinet, and switch board is positioned on the crane span structure (1) of rotation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100644328A CN101537272B (en) | 2009-03-12 | 2009-03-12 | Thickener control system |
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| CN2009100644328A CN101537272B (en) | 2009-03-12 | 2009-03-12 | Thickener control system |
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| CN101537272A true CN101537272A (en) | 2009-09-23 |
| CN101537272B CN101537272B (en) | 2011-01-05 |
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| CN2009100644328A Expired - Fee Related CN101537272B (en) | 2009-03-12 | 2009-03-12 | Thickener control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302870A (en) * | 2011-06-08 | 2012-01-04 | 淮北市中芬矿山机器有限责任公司 | Wireless communication method for peripheral traction thickener |
| CN102966045A (en) * | 2011-09-01 | 2013-03-13 | 湖南华鼎建筑科技有限公司 | Bridge supporting replacement synchronous ejecting device |
| CN104069658A (en) * | 2013-11-04 | 2014-10-01 | 飞翼股份有限公司 | Thickener rake control device and method and thickener |
| CN108310847A (en) * | 2017-11-26 | 2018-07-24 | 广东惠利普路桥信息工程有限公司 | A kind of Chemical Manufacture plate and frame type filter-press control method |
| CN108392859A (en) * | 2018-05-10 | 2018-08-14 | 中建三局第二建设工程有限责任公司 | A kind of steel sedimentation basin that can be recycled |
| CN109293068A (en) * | 2018-11-12 | 2019-02-01 | 中铁十四局集团大盾构工程有限公司 | A kind of shield slurry processing system and processing method |
-
2009
- 2009-03-12 CN CN2009100644328A patent/CN101537272B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302870A (en) * | 2011-06-08 | 2012-01-04 | 淮北市中芬矿山机器有限责任公司 | Wireless communication method for peripheral traction thickener |
| CN102966045A (en) * | 2011-09-01 | 2013-03-13 | 湖南华鼎建筑科技有限公司 | Bridge supporting replacement synchronous ejecting device |
| CN104069658A (en) * | 2013-11-04 | 2014-10-01 | 飞翼股份有限公司 | Thickener rake control device and method and thickener |
| CN108310847A (en) * | 2017-11-26 | 2018-07-24 | 广东惠利普路桥信息工程有限公司 | A kind of Chemical Manufacture plate and frame type filter-press control method |
| CN108392859A (en) * | 2018-05-10 | 2018-08-14 | 中建三局第二建设工程有限责任公司 | A kind of steel sedimentation basin that can be recycled |
| CN108392859B (en) * | 2018-05-10 | 2023-08-22 | 中建三局第二建设工程有限责任公司 | Steel sedimentation tank capable of being recycled |
| CN109293068A (en) * | 2018-11-12 | 2019-02-01 | 中铁十四局集团大盾构工程有限公司 | A kind of shield slurry processing system and processing method |
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|---|---|
| CN101537272B (en) | 2011-01-05 |
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