CN103279092A - Centralized control system for long-distance pipeline coal transporting terminal station equipment and control method of centralized control system - Google Patents
Centralized control system for long-distance pipeline coal transporting terminal station equipment and control method of centralized control system Download PDFInfo
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- CN103279092A CN103279092A CN201310176535XA CN201310176535A CN103279092A CN 103279092 A CN103279092 A CN 103279092A CN 201310176535X A CN201310176535X A CN 201310176535XA CN 201310176535 A CN201310176535 A CN 201310176535A CN 103279092 A CN103279092 A CN 103279092A
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Abstract
The invention discloses a centralized control system for long-distance pipeline coal transporting terminal station equipment and a control method of the centralized control system. The system relates to four control systems of concentration, dewatering, storage coal slurry treatment and slime water treatment of three terminals. A monitoring point comprises a transferring point, a coal storage yard, an automobile loading bunker, a dewatering workshop, a weighbridge room, a slurry feeding pump room and a slurry storage tank group of a first terminal and slurry storage tank groups of a second terminal and a third terminal; main processing equipment comprises a conveyor, a brake, a chute gate, a feeding machine, a bulkhead gate, a belt weigher, an ash analyzer, a dust remover, a centrifugal machine, a filter press and dewatering and slurry feeding pumps and valves and the like. Control systems of the filter press and the centrifugal machine can meet the requirements of safety inspection, control, regulation, alarming, interlocking and protection during starting, stopping, normal operation and accident handling processes of the control systems. According to the centralized control system for the long-distance pipeline coal transporting terminal station equipment, high informatization and digitization are realized, and the requirements of the detection and the control of a one-to-many pipeline transportation system can be met. The centralized control system for the long-distance pipeline coal transporting terminal station equipment can be widely applied to monitor and control various pipeline transportation systems.
Description
Technical field
The present invention relates to long terminal Automatic monitoring systems apart from convey coal pipe, be specifically related to the defeated coal equipment for terminal station centralized control system of long-distance pipe and control method.
Background technology
The U.S. is " one to one " system in the convey coal pipe system that adopts the seventies in last century, i.e. corresponding 1 terminal user in 1 head end station, and convey coal pipe of the present invention system belongs to " one-to-many " system, namely 1 coal supply head end is to 3 terminal users.
Summary of the invention
The objective of the invention is provides an advanced IT application, digitized terminal monitory system for long apart from convey coal pipe, with monitoring and the defeated coal equipment for terminal station centralized control system of the long-distance pipe of control needs that satisfies " one-to-many " pipe communication system.
Another object of the present invention provides control method.
Technical scheme of the present invention is achieved in that long-distance pipe fails coal equipment for terminal station centralized control system, the control of this terminal system comprises concentration systems control, dewatering system control, the control of coal storage slurry system and black water processing controls, special character of the present invention is: the defeated coal of described dehydration divides control station PLC system by the network printer, the defeated coal engineer station of dehydration, the defeated coal operator station of dehydration, dehydration workshop PLC master's cabinet, sub-control room, No. 1 I/O cabinet of dehydration workshop PLC, No. 2 I/O cabinets of dehydration workshop PLC, No. 3 I/O cabinets of dehydration workshop PLC, No. 4 I/O cabinets of dehydration workshop PLC, No. 1 I/O cabinet of production system PLC, No. 2 I/O cabinets of production system PLC, the control net is formed; The network printer in the described sub-control room, the defeated coal engineer station of dehydration, the defeated coal operator station of dehydration insert dehydration workshop PLC master's cabinet respectively, and are connected with Control Logix-01, Control Logix-02 by Ethernet EtherNet; Described Control Logix-01, Control Logix-02, with the RIO-1 in the dehydration No. 1 I/O cabinet of workshop PLC (6), RIO-2, RIO-3, with the RIO-4 in No. 2 I/O cabinets of dehydration workshop PLC, RIO-5, RIO-6, with the RIO-7 in No. 3 I/O cabinets of dehydration workshop PLC, RIO-8, RIO-9, with the RIO-10 in No. 4 I/O cabinets of dehydration workshop PLC, RIO-11, RIO-12, with the RIO-13 in No. 1 I/O cabinet of production system PLC (10), RIO-14, RIO-15, with No. 2 I/O cabinets of production system PLC (in RIO-16, RIO-17, it is online that RIO-18 is connected in ContorNet control in parallel.
A kind of control method of centralized control system, undertaken by following step:
(1), thickener and the PLC of automatic medicine adding apparatus by carrying of described concentration systems, its parameter is carried out remote monitoring, and pressure filter, underflow pump and water circulating pump need centralized control;
(2), the major control object of described dewatering system comprises screen bowl centrifuge, pressure filter, barrier film pressurization pond and cleans the filter cloth pond; Hydro-extractor and pressure filter are finished monitoring by carrying PLC, and the concentration of the valve of described pressurization pond and cleaning pond, hydro-extractor, pan feeding flow need be by station control system Centralized Monitoring;
(3), the monitored object of described storage slurry system is slurry can, the monitoring project comprises the concentration of slurry can coal slurry liquid level and coal slurry, the temperature of flow;
(4), the monitored object of described slurry circulating system comprises slag stock pump, lift pump, preliminary sedimentation tank, buffering regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin, monitoring objective comprises preliminary sedimentation tank flow of inlet water, turbidity and concentration of suspension, coal slime density, the lift pump flow, buffering regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin water level.
Prior art of the present invention is compared, and has the following advantages:
(1), convey coal pipe of the present invention system adopts redundant PLC main frame, redundant ContorNet controls net, and distributed I/O substation designs.Single host, the single network that uses is more safe and reliable relatively now, and when system broke down, the work of trouble unit is got involved and born to the parts of redundant configuration, reduces the fault-time of system thus, reaches the purpose of high-yield and high-efficiency.
(2), existing relatively convey coal pipe system is " one to one " system, i.e. 1 corresponding 1 terminal user in head end station, convey coal pipe of the present invention system belongs to " one-to-many " system, namely 1 coal supply head end makes systemic-function more powerful to 3 terminal users.
(3), convey coal pipe of the present invention system provides an advanced IT application, digitized terminal monitory system for long apart from convey coal pipe, for carrying PLC, its parameter is carried out remote monitoring, all the other equipment all enter centralized control, and to concentration systems, dewatering system, storage slurry system, the control of classifying of 4 process systems of slurry circulating system.Present relatively single system control is more efficient.
Description of drawings
Defeated coal divides control station PLC system architecture schematic block diagram to Fig. 1 for the present invention dewaters.
Among the figure, 1 is the network printer; 2 are the defeated coal engineer station of dehydration; 3 are the defeated coal operator station of dehydration; 4 are dehydration workshop PLC master's cabinet; 5 is sub-control room, and 6 are No. 1 I/O cabinet of dehydration workshop PLC; 7 are No. 2 I/O cabinets of dehydration workshop PLC; 8 are No. 3 I/O cabinets of dehydration workshop PLC; 9 are No. 4 I/O cabinets of dehydration workshop PLC; 10 is No. 1 I/O cabinet of production system PLC; 11 is that No. 2 I/O cabinets of dehydration workshop PLC, 12 are the control net.
Embodiment
Fig. 1 is embodiments of the invention.
Below in conjunction with drawings and Examples content of the present invention is described further.
With reference to shown in Figure 1, long-distance pipe is failed coal equipment for terminal station centralized control system, the control of this terminal system comprises concentration systems control, dewatering system control, the control of coal storage slurry system and black water processing controls, the defeated coal of described dehydration divide control station PLC system by the network printer, the defeated coal engineer station of dehydration, the defeated coal operator station of dehydration, dehydration workshop PLC master's cabinet, sub-control room, No. 1 I/O cabinet of dehydration workshop PLC, No. 2 I/O cabinets of dehydration workshop PLC, No. 3 I/O cabinets of dehydration workshop PLC, No. 4 I/O cabinets of dehydration workshop PLC, No. 1 I/O cabinet of production system PLC, No. 2 I/O cabinets of production system PLC, the control net is formed; The network printer (1) in the described sub-control room (5), the defeated coal engineer station (2) of dehydration, the defeated coal operator station (3) of dehydration insert dehydration workshop PLC master's cabinet (4) respectively, and are connected with Control Logix-01, Control Logix-02 by Ethernet EtherNet; Described Control Logix-01, Control Logix-02, with the RIO-1 in the dehydration No. 1 I/O cabinet of workshop PLC (6), RIO-2, RIO-3, with the RIO-4 in the dehydration No. 2 I/O cabinets of workshop PLC (7), RIO-5, RIO-6, with the RIO-7 in the dehydration No. 3 I/O cabinets of workshop PLC (8), RIO-8, RIO-9, with the RIO-10 in the dehydration No. 4 I/O cabinets of workshop PLC (9), RIO-11, RIO-12, with the RIO-13 in No. 1 I/O cabinet of production system PLC (10), RIO-14, RIO-15 is with the RIO-16 in No. 2 I/O cabinets of production system PLC (11), RIO-17, RIO-18 is connected in parallel on the ContorNet control net (12).
A kind of control method of centralized control system, undertaken by following step:
(1), thickener and the PLC of automatic medicine adding apparatus by carrying of described concentration systems, its parameter is carried out remote monitoring, and pressure filter, underflow pump and water circulating pump need centralized control;
(2), the major control object of described dewatering system comprises screen bowl centrifuge, pressure filter, barrier film pressurization pond and cleans the filter cloth pond; Hydro-extractor and pressure filter are finished monitoring by carrying PLC, and the concentration of the valve of described pressurization pond and cleaning pond, hydro-extractor, pan feeding flow need be by station control system Centralized Monitoring;
(3), the monitored object of described storage slurry system is slurry can, the monitoring project comprises the concentration of slurry can coal slurry liquid level and coal slurry, the temperature of flow;
(4), the monitored object of described slurry circulating system comprises slag stock pump, lift pump, preliminary sedimentation tank, buffering regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin, monitoring objective comprises preliminary sedimentation tank flow of inlet water, turbidity and concentration of suspension, coal slime density, the lift pump flow, buffering regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin water level.
Below each system is described in further detail:
1. the control of concentration systems
The PLC that thickener, automatic medicine adding apparatus carry can satisfy the requirement to its remote monitoring.
During normal the operation, concentrate workshop underflow pump sequence starting, and regulate the aperture of underflow pump discharge valve, realize the adjusting to flow; The control of water circulating pump flow is to realize by the aperture of regulating its outlet valve equally.
Concentrated workshop is operation continuously round the clock, and underflow pump and ebullator are the using and the reserved, when working barrel breaks down, close immediately, start stand-by pump simultaneously; When the one-level thickener breaks down, coal slurry in the machine is beaten to secondary thickener or accident thickener; When the secondary thickener breaks down, coal slurry in the machine is beaten to the accident thickener.After fault was got rid of, system entered normal working procedure.
2, the control of dewatering system
1) PLC that carries of hydro-extractor and pressure filter can satisfy the purpose that its operation is controlled automatically.
2) need carry out water level control to barrier film pressurization pond and the filter cloth cleaning pond of pressure filter.
3) after dehydration workshop central station of floating dock is received the alerting signal of PLC, hydro-extractor pan feeding valve and accident valve are adjusted.
4) stopping procedure:
1. sedimentation centrifugal dehydration system
Feed stock pump → hydro-extractor → centrifugal liquid pump → transporter → belt;
2. concentrate press filteration system
Underflow pump → pan feeding pump → agitator → air compressor machine → pressure filter → transporter → belt.
5) adjusting of hydro-extractor feeding is the parameter according to its pan feeding flowmeter and densimeter, and the frequency of adjusting hello stock pump realizes.
6) sedimentation centrifugate flow is according to centrifugate bucket liquid level, regulates that the frequency of centrifugal liquid pump regulates.
7) accident centrifugate flow then is according to hydro-extractor accident bucket liquid level, and adjusting screen cloth accident pump frequency is regulated.
3. the control of storage slurry system
1) in monitoring slurry can liquid level, establishes high low level liquid level warning device.High liquid level control and pan feeding valve interlocking automatically shut down after predetermined high liquid level, stop feed; Low liquid level control and outlet valve interlocking automatically shut down after liquid level of the predetermined end equally, stop discharging.The coal slurry smart allocation should be guaranteed simultaneously to each storage tank, and user's slurry-supplying can be selected automatically.
2) densimeter and the flowmeter of installing in the outlet of slurry can discharge pump except monitoring in real time coal-water fluid concentration and the flow, can also add up the coal supply amount of giving the user in a period of time.
3) in the slurry can coal slurry temperature also at the row of monitoring.
4. black water processing controls
1) flowmeter of installing on the preliminary sedimentation tank water inlet manifold except showing flow, can give the alarm to the water treatment station running status simultaneously.
2) at the buffering regulating reservoir nephelometer is installed, is finished the detection to influent turbidity and concentration of suspension.According to flow and turbidity, manually opened PAC dosing pump is regulated dose.
3) the coal slime concentration that shows according to the densitometer that arranges in concentration basin bottom, the start and stop of control slag stock pump, coal slime density 〉=3% o'clock, turn on pump; During coal slime density ﹤ 3%, termination of pumping.
4) according to the parameter of buffering regulating reservoir water level display instrument, control the operation of lift pump.Turn on pump during depth of water 1.5m, termination of pumping during depth of water 0.3m.
5) according to the flow of the lift pump that records, the dosage of the PAC of manual shift flocculation basin.When lift pump was all shut down, PAC added dose pump auto stop.
6) clear water reserviors show water level with instrument, during low-water level depth of water 0.3m, close down water transfer pump.
7) chemicals dosing plant carries control system, does not enter centralized control system.
8) when sludge sump and backwash blowoff basin water level arrival certain altitude, the unwatering pump Auto Power On, it is gentle to regulating reservoir that pool inner water is sent into corresponding mud thickener; When water level is down to certain low level, pump trip then.Sludge pump and backwash unwatering pump all carry opertaing device.
5. station control system arranges
1～No. 3 terminal divides the control station respectively to establish 1 cover ControlLogix1756 redundancy-type PLC.Wherein, No. 1 terminal PLC that is arranged in the electric substation of dehydration workshop adopts the collecting and distributing type control structure.The PLC remote I/O station is located in the production system electric substation.Finish centralized control to it by 2 computing machines in No. 1 terminal, and communicate by letter with Master Control Center by the SDH optical fiber transport channel.
2, No. 3 terminal PLC controlling centers are separately positioned in separately the electric substation, all finish centralized control by 2 computing machines in the pulpit separately, realize and the communicating by letter of Master Control Center by the SDH Optical Fiber Transmission equally.
Embodiment 1
In the concentration systems control in the defeated coal terminal station control system of long-distance pipe, thickener and automatic medicine adding apparatus can realize remote monitoring, and pressure filter, underflow pump and water circulating pump need the centralized control of system by carrying PLC.Wherein Kong Zhi key link is that the flow of underflow pump and water circulating pump will be controlled by the aperture of regulating outlet valve.In a single day all kinds of working machines break down, and all can start secondary machine or guest machine immediately.
In the control of dewatering system, the PLC that hydro-extractor and pressure filter carry can satisfy the automatic control needs; Valve, pan feeding flow and the concentration of barrier film pressurization pond and cleaning pond, hydro-extractor then need the Centralized Monitoring of system.The monitoring objective in pond is the height of its water level, and the control of hydro-extractor valve is according to the alerting signal that passes from PLC to central station of floating dock, and the pan feeding flow is controlled by the adjusting of coal slurry pump frequency.
Embodiment 3
In the control of storage slurry system, the target of monitoring is the height of slurry can coal slurry liquid level.The two position control device respectively with pan feeding valve and bleeder valve interlocking, when tank level arrived the high low level liquid level that sets, valve all can be closed automatically, and can guarantee that coal slurry divides intelligently in each storage tank (group).Slurry can slurry pump outlet arranges concentration and flowmeter, so as to detecting concentration and the flow of coal slurry, and can add up the coal supply amount to the user.
In the slurry circulating system of No. 1 terminal, monitoring objective comprises the preliminary sedimentation tank inflow, turbidity and concentration of suspension, coal slime density, the gentle water level towards regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin of lift pump flow.Inflow detects by the electromagnetic flowmeter that is installed on the water pipe; Turbidity or concentration of suspension detect by the online turbidimeter that is installed in the buffering regulating reservoir; The density of coal slime detects by the densitometer that is installed in the concentration basin bottom; The flow of lift pump measures its size by settling basin water outlet triangular-notch weir; The height of water level shows with display instrument.
Embodiment 5
1～No. 3 terminal divides the control station respectively to establish 1 cover ControlLogix, 1756 redundancy-type PLC.
Wherein No. 1 terminal PLC adopts the collecting and distributing type control structure.The PLC controlling center is arranged on dehydration workshop 6kV electric substation, the PLC remote I/O station is set in the production system 6kV electric substation, divide 2 industrial control computer remote monitoring controlling the station by the defeated coal of dehydration in No. 6 pumping plant central station of floating docks, finish the centralized control of whole No. 1 terminal dehydration coal handling system, and contact by SDH optical fiber transport channel and Master Control Center.Concrete PLC system layout is seen accompanying drawing.
Claims (2)
1. long-distance pipe is failed coal equipment for terminal station centralized control system, the control of this terminal system comprises concentration systems control, dewatering system control, the control of coal storage slurry system and black water processing controls is characterized in that: the defeated coal of described dehydration divides control station PLC system by the network printer, the defeated coal engineer station of dehydration, the defeated coal operator station of dehydration, dehydration workshop PLC master's cabinet, sub-control room, No. 1 I/O cabinet of dehydration workshop PLC, No. 2 I/O cabinets of dehydration workshop PLC, No. 3 I/O cabinets of dehydration workshop PLC, No. 4 I/O cabinets of dehydration workshop PLC, No. 1 I/O cabinet of production system PLC, No. 2 I/O cabinets of production system PLC, the control net is formed; The network printer (1) in the described sub-control room (5), the defeated coal engineer station (2) of dehydration, the defeated coal operator station (3) of dehydration insert dehydration workshop PLC master's cabinet (4) respectively, and are connected with Control Logix-01, Control Logix-02 by Ethernet EtherNet; Described Control Logix-01, Control Logix-02, with the RIO-1 in the dehydration No. 1 I/O cabinet of workshop PLC (6), RIO-2, RIO-3, with the RIO-4 in the dehydration No. 2 I/O cabinets of workshop PLC (7), RIO-5, RIO-6, with the RIO-7 in the dehydration No. 3 I/O cabinets of workshop PLC (8), RIO-8, RIO-9, with the RIO-10 in the dehydration No. 4 I/O cabinets of workshop PLC (9), RIO-11, RIO-12, with the RIO-13 in No. 1 I/O cabinet of production system PLC (10), RIO-14, RIO-15 is with the RIO-16 in No. 2 I/O cabinets of production system PLC (11), RIO-17, RIO-18 is connected in parallel on the ContorNet control net (12).
2. the control method of a centralized control system, undertaken by following step:
(1), thickener and the PLC of automatic medicine adding apparatus by carrying of described concentration systems, its parameter is carried out remote monitoring, and pressure filter, underflow pump and water circulating pump need centralized control;
(2), the major control object of described dewatering system comprises screen bowl centrifuge, pressure filter, barrier film pressurization pond and cleans the filter cloth pond; Hydro-extractor and pressure filter are finished monitoring by carrying PLC, and the concentration of the valve of described pressurization pond and cleaning pond, hydro-extractor, pan feeding flow need be by station control system Centralized Monitoring;
(3), the monitored object of described storage slurry system is slurry can, the monitoring project comprises the concentration of slurry can coal slurry liquid level and coal slurry, the temperature of flow;
(4), the monitored object of described slurry circulating system comprises slag stock pump, lift pump, preliminary sedimentation tank, buffering regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin, monitoring objective comprises preliminary sedimentation tank flow of inlet water, turbidity and concentration of suspension, coal slime density, the lift pump flow, buffering regulating reservoir, clear water reserviors, sludge sump and backwash blowoff basin water level.
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| CN104117649A (en) * | 2014-07-28 | 2014-10-29 | 山东球墨铸铁管有限公司 | Intelligent flexible control system of nodular cast iron pipe centrifugal machine |
| CN105511329A (en) * | 2016-01-13 | 2016-04-20 | 昆明理工大学 | Remote monitoring system for operation state of dewatering station |
| CN110090487A (en) * | 2019-05-06 | 2019-08-06 | 中赟国际工程有限公司 | A kind of slurry long range Hydraulic transportation and equipment for separating liquid from solid and separating technology |
| CN111137686A (en) * | 2019-12-31 | 2020-05-12 | 陕西神渭煤炭管道运输有限责任公司 | Pipeline coal conveying system interstation open-circuit starting and switching closed-circuit control system and method |
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Application publication date: 20130904 |