CN101476486A - Automatic monitoring system for down-hole central pumping room drainage - Google Patents
Automatic monitoring system for down-hole central pumping room drainage Download PDFInfo
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Abstract
The invention relates to an underground central pump room draining automatic monitoring system, which comprises a PLC control cabinet, a remote expanding module, a site data bus, a contact screen, an analog quantity and switching value input module, various monitoring probes, a travel switch, a level instrument and an executable section. A monitoring net adopts a form of combining a PROFIBUS DP site data bus and an industrial ethernet. A monitoring method for the system comprises: (1) monitoring the absorbing well water level; (2) monitoring the state for starting a high pressure switching cabinet by a water pump; (3) judging the valve levels of a gate valve, a ball valve of a water jet pumping device and a water distribution gate; (4) judging the valve levels of a vacuum pump ball valve; (5) measuring each equipment temperature measuring point; (6) measuring signals of a pressure sensor and a negative pressure sensor; (7) judging system faults; (8) automatically controlling the start-stop and operation numbers of the water pumps according to the absorbing well water level conditions; and (9) setting power supply peak avoiding time periods, and automatically selecting starting time and numbers of a pump. The system improves the system working reliability, reduces the equipment fault rate, and adopts a three-stage monitoring structure for a draining system.
Description
Technical field
The present invention relates to the central pumping room drainage automatic monitored control system in a kind of down-hole.
Background technology
Mine Drainage System is responsible for the down-hole water burst is drained into ground, is generally concentrated by down-hole central authorities pump house water burst is drained into ground; Can pumping room drainage system of down-hole central authorities reliably, operation effectively, will be related to the draining safety and even the mine safety of whole mine.Pumping room drainage system of down-hole central authorities is generally by water pump and motor, starting mode of pump high-tension switch cabinet, sump, absorbing well, absorption well, water pump vacuum extractor (vacuum pump or water jet vacuum extractor), three valves (gate valve, flap valve, bottom valve; Gate valve, flap valve are installed on the discharge pipe line, and bottom valve is installed in the water pump suction pipe end), composition such as checkgate (be installed between sump and the absorbing well, absorption well or between absorbing well, absorption well and the absorbing well, absorption well) and discharge pipe line; Central authorities' pumping room drainage system equipment has characteristics such as power of motor is big, voltage is high, startup shut-down operation complexity, operation troubles pilosity.
At present, common mine central pumping room drainage system equipment, its gate valve, checkgate, water jet vacuum extractor are manual operations, no electric operator; Operations such as absorbing well, absorption well water-level observation, water pump start-stop are manual type.Exist the problem of the modernized mine management of many incompatibilities such as labour intensity is big, complicated operating process, and the startup dwell time is long, efficient is low.
Number of patent application is 200710185265.3, denomination of invention is the patent application of " a kind of mine explosion-suppression and intrinsic safety type digitlization automatic drain system ", disclose a kind of mine explosion-suppression and intrinsic safety type digitlization automatic drain system, belonged to test technique automatic field under the coal mine.Purpose be to disclose a kind of can be accurate, safety, water bunker level and the real-time technical scheme that starts the explosion-proof intrinsically safe digital automatic control system of drainage system under the reliable detection coal mine, it is characterized in that this system is by intrinsic safety type digital water level sensor I, Flameproof and intrinsically safe control loop II and intrinsic safety electric source circuit I II three parts are formed, it is a cover digitlization, intelligent monitoring system, have real-time collection and storage water level signal, monitoring pump motor duty, the sump flow, and control the start-stop of motor in real time, realize that data show, limit and report to the police and function such as host computer serial communication.And according to colliery industrial security type design, the explosion-proof Exdib that is masked as can be applicable to the automatic monitoring and the automation drainage system of the shaft sump water level of general mine and highly gassy mine.
Number of patent application is 200610171313.9, denomination of invention is the patent application of " intelligent unmanned remote monitoring apparatus of main water discharge pump ", disclose a kind of intelligent unmanned remote monitoring apparatus of main water discharge pump, it is a necessary device realizing main drain pump room (also can be used for other industry) no worker monitor under the coal mine.For China's coal-mine main drain pump room develops to the direction of intellectuality, electromechanical integration, no worker monitorization, provide necessary goods and materials basis.This product has following principal character: 1. utilize various sensors and industrial control computer to realize the serialization of each major parameter of water pump is monitored.2. establishment management software is realized the intelligent unattended in main drain pump room.3. utilize the Internet transmission information, realize unmanned remote monitoring function.
Number of patent application is 200610002370.4, denomination of invention is the patent application of " coal mine safety disaster-resistant type automatic main drainage system ", disclose coal mine safety disaster-resistant type automatic main drainage system, mine production recovered the function of draining after it can realize the normal draining of mine, happen suddenly floods accident emergency drainage and calamity.This system is made up of full-automatic ground remote monitoring and the air-cooled waterproof anti-explosion type of control system, multi-stage centrifugal pump, water-cooled or split motor etc.Described full-automatic ground remote monitoring and control system, by real-time remote monitoring mine water level and equipment working condition, realize the function of the open and close electric gate valve of long-range open, have a power failure machine function and main pump room, down-hole drainage pipeline networks, form by hardware and softwares such as gauge tap, sensor, data/address bus, data demonstration and processing; Water pump is common mining multistage centrifugal drainage pump, by the driven by motor pump working, realizes drain function; The electric machine structure pattern is the water-cooled of automatically control or split is air-cooled and the explosion-proof electric machine of waterproof sealing.
Summary of the invention
The purpose of this invention is to provide a kind of down-hole central authorities pumping room drainage automatic monitored control system that adopts new technologies such as industrial computer Controlling Technique for Programming, sensing technology.
For achieving the above object, the technical solution used in the present invention is:
The central pumping room drainage automatic monitored control system in a kind of down-hole comprises: down-hole pumping room drainage system of central authorities and draining automatic monitored control system is characterized in that:
Down-hole pumping room drainage system of central authorities comprises: water pump and motor, starting mode of pump high-tension switch cabinet, sump, absorbing well, absorption well, water pump vacuum extractor, gate valve, flap valve, bottom valve, checkgate and discharge pipe line; Gate valve, flap valve are installed on the discharge pipe line, and bottom valve is installed in the water pump suction pipe end, and checkgate is installed between sump and the absorbing well, absorption well or between absorbing well, absorption well and the absorbing well, absorption well; Gate valve of the present invention, checkgate, water pump vacuum extractor all possess manual, electronic two kinds of modes of operation, and on its electric operator travel switch have been installed; Absorbing well, absorption well has been installed ultrasonic liquid leveller; Water pump high voltage startup switchboard equipment has the electronics synthesis protected location of data transmission interface, realizes automatic operating and monitoring at a distance; The pump motor stator is installed Pt100 resistance, and water pump bearing, the equal mounting temperature sensor of motor bearings have been installed ultrasonic flowmeter and the B/P EGR Back Pressure Transducer EGR of measuring the pump vacuum degree on water pump suction pipe; Pump drain pipe has been installed pressure sensor; All the sensors and travel switch signal are uploaded to corresponding digital quantity input module or analog quantity input module; System is equipped with vacuum table at the inlet segment of water pump, is used for the vacuum of monitoring water pump before turn on pump; Delivery port at water pump is equipped with pressure meter, is used for monitoring that the water pump high pressure closes and the pressure of electric brake when not opening;
The draining automatic monitored control system comprises: PLC switch board and long-range expansion module thereof, field data bus, touch-screen, analog quantity and switching input module, various monitoring probe, travel switch, liquid level instrument, operating part link to each other with ground maneuvers chamber computer by Industrial Ethernet;
(1) absorbing well, absorption well water level monitoring: measure by the ultrasonic liquid leveller that absorbing well, absorption well is installed, measured signal is a continuous signal, can reflect the absorbing well, absorption well water level in real time, the water level signal that ultrasonic liquid leveller is surveyed is introduced into the analog quantity input module, be uploaded to the PLC switch board again, on the computer interface of monitoring system, show at any time; The absorbing well, absorption well high water level is turn on pump, termination of pumping when the value of setting;
(2) starting mode of pump high-tension switch cabinet status monitoring: the starting mode of pump high-tension switch cabinet is equipped with the electronics synthesis protected location, the various parameters of switchboard, the position signalling of voltage, electric current, power, power factor, switchboard line breaker enters the PLC switch board by the RS485 communication modes, the PLC switch board just can judge voluntarily according to the information of uploading whether high-tension switch cabinet possesses entry condition, in service when switchboard electric current, voltage parameter overcurrent, overvoltage appear, when under-voltage is unusual, system designs respectively and reports to the police or delayed shutdown;
(3) ball valve of gate valve, water jet vacuum extractor, the checkgate valve position is judged: judge by the travel switch of installing in the above that valve position is in and close or opening, the switching value signal that travel switch provides is sent to digital quantity input module, be sent to long-range expansion module after in module, handling, be sent to the PLC switch board through the field data bus again, judge for the PLC logical operation;
(4) vacuum pump ball valve valve position is judged: judge by the travel switch of installing in the above that valve position is in and close or opening, the switching value signal that travel switch provides is sent to digital quantity input module, be sent to long-range expansion module after in module, handling, be sent to the PLC switch board through the field data bus again, judge for the PLC logical operation;
(5) measurement of each point for measuring temperature temperature of equipment: motor stator winding the is pre-buried resistance of Pt100, motor bearings, water pump bearing have also been installed temp probe respectively, measured signal is sent to the multipath temperature patrol inspection instrument earlier, after calculating temperature signal, by the RS485 communication modes, data are sent to long-range expansion module, are sent to the PLC switch board through the field data bus again, judge control for computer logic; In the PLC programmable controller, set the ceiling temperature of motor stator, motor bearings, water pump bearing respectively, the ceiling temperature value is the two-stage parameter, when reaching first order temperature, system alarm also shows, when reaching second level temperature, control system stops water pump automatically and avoids device damage, and the measured temperature of above each point all can show on the computer interface of control system in real time;
(6) pressure sensor, B/P EGR Back Pressure Transducer EGR signal measurement: should earlier pump chamber be vacuumized before the turn on pump, on the suction water pipe vacuum table of water pump, B/P EGR Back Pressure Transducer EGR has been installed, its signal is sent to the analog quantity input module earlier, be sent to the PLC switch board through the field data bus again, its negative pressure value can be measured in real time, represent that water pump vacuumizes when negative pressure value reaches setting value, water pump can start, otherwise water pump can not start; On the pressure meter of gutter pressure sensor has been installed, its data mode is identical with path and B/P EGR Back Pressure Transducer EGR;
(7) system failure is judged: the PLC switch board is according to the various information that collect at the scene, judge the various parameter values in the drainage system, the parameter values that collects is compared with the system alarm setting value, if data exception, fault has been described, the PLC switch board will drive alarm equipment alarm and show fault category, require termination of pumping according to program setting;
(8) according to the start and stop of absorbing well, absorption well water level situation automatically controlled water pump and operation platform number: under semi-automatic or fully automatic operation mode, when the absorbing well, absorption well water level when setting value, the PLC switch board judges that according to logical program is first-selected which platform pump possesses entry condition, select wherein of the instruction of a pump voluntarily, the starting mode of pump that it is selected by logic control; Behind the starting mode of pump, at any time the monitoring, arithmetic system various parameters, after water pump is opened, if the speed of absorbing well, absorption well drawdown is lower than setting value, the back is opened other water pump increasing draining automatically within half an hour ability will be opened at first water pump by system, if absorbing well, absorption well drawdown speed still do not reach setting value, restart a water pump, satisfy the design load requirement until absorbing well, absorption well drawdown speed; When the absorbing well, absorption well water level drained into setting value, PLC switch board control follow procedure was automatically by the platform pump sequence shutdown; The running time of every water pump, the record row operation of going forward side by side is all arranged in the PLC switch board computer; After a water pump accumulative total is worked setting value, an other water pump operation will be selected by system; Computer can take turns or intersect to start water pump according to logic operation result, and separate unit or many operations are controlled each water pump and taken turns to operate, and make every water pump degree of wear equalization, guarantee that the running time of each water pump is suitable;
(9) according to the absorbing well, absorption well water level, power supply peak valley section time dividing condition, in the PLC programmable controller, be provided with and keep away the peak time section, in this time period input PLC program, PLC selects Running pump time, turn on pump platform number automatically according to absorbing well, absorption well water level situation, absorbing well, absorption well water level rate of climb situation, guarantees that water pump operation is reasonable, in draining safety with keep away between the peak time, obey the principle of draining safety in line with keeping away peak time.
According to the central pumping room drainage automatic monitored control system in described down-hole, it is characterized in that: in described pump motor loop, seal in reactor, behind electric motor starting, reactor is excised the motor normal operation input.
According to the central pumping room drainage automatic monitored control system in described down-hole, it is characterized in that: in absorbing well, absorption well, set up a throw-in type liquid level instrument.
According to the central pumping room drainage automatic monitored control system in described down-hole system, it is characterized in that: used gate valve motor drive mechanism is many turning valves electric device, and its control point has four, and be respectively two travel switches: motor operated valve reaches the position, and motor operated valve closes and puts in place; Two torque switch: open over torque, close over torque; These contacts are normally closed contact.
According to described down-hole central authorities pumping room drainage automatic monitored control system, it is characterized in that: described draining automatic monitored control system adopts three grades of control structures, and the user can be in the ground maneuvers chamber, PLC switch board and local control box are finished the monitoring to drainage system; The form that monitor network adopts PROFIBUS DP field data bus to combine with Industrial Ethernet; Adopt PROFIBUSDP field data bus communication pattern between PLC switch board and the long-range expansion module; Communicating by letter between ground maneuvers chamber computer and the PLC switch board adopted Industrial Ethernet.
The present invention in the technology that simplifies the operation, alleviate labor strength, improve the system works reliability, reduce aspects such as equipment failure rate and obtained good result; The present invention adopts three grades of control structures, and the user can be in the ground maneuvers chamber, PLC switch board and local control box are finished the monitoring to drainage system, and the drainage system working method is fully automatic operation, semi-automatic operation, local control box control mode.Simultaneously can realize the peak load shifting saves energy of powering.Main beneficial effect is as follows:
1, according to the start and stop of situation automatically controlled water pumps such as absorbing well, absorption well water level and operation platform number.
2, control each water pump and take turns to operate, make every water pump degree of wear equalization.
3, according to the absorbing well, absorption well water level, situations such as power supply peak valley section time division, the rational management water pump operation is saved operating cost.
4, monitor the running parameter of water pump and motor in real time.
5, have fault alarm, automatic protection functions.
6, networking function: insert full ore deposit complex automatic system by optical fiber, utilize LAN to carry out data resource and share, realize remote measurement, remote signalling, distant control function.
Description of drawings
Fig. 1 is the work schematic diagram of separate unit water pump among the present invention.
Fig. 2 is the block diagram of the central pumping room drainage automatic monitored control system in down-hole of the present invention.
Fig. 3 is the structured flowchart of the central pumping room drainage automatic monitored control system in down-hole of the present invention.
In the accompanying drawing: 1, gutter; 2, flap valve; 3, vacuum meter; 4, pressure sensor; 5, centrifugal water pump; 6, vacuum meter; 7, B/P EGR Back Pressure Transducer EGR; 8, pulsating pump; 9, water dispensing valve (normally is in opening; 10, throw-in type liquid level instrument; 11, ultrasonic liquid leveller; 12, bottom valve; 13, absorbing well, absorption well; 14, sump; 15, high-tension switch cabinet is combined declaration form unit; 16, down-hole central substation; 17, PLC switch board and touch-screen; 18, Industrial Ethernet; 19, PROFIBUS DP field data bus; 20, central pump house local control box.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
One, general introduction,
Mine Drainage System is responsible for the down-hole water burst is drained into ground, is generally concentrated by down-hole central authorities pump house water burst is drained into ground; Can pumping room drainage system of down-hole central authorities reliably, operation effectively, will be related to the draining safety and even the mine safety of whole mine.Pumping room drainage system of down-hole central authorities is generally by water pump and motor, starting mode of pump high-tension switch cabinet, sump, absorbing well, absorption well, water pump vacuum extractor (vacuum pump or water jet vacuum extractor), three valves (gate valve, flap valve, bottom valve; Gate valve, flap valve are installed on the discharge pipe line, bottom valve is installed in the water pump suction pipe end), composition such as checkgate (be installed between sump and the absorbing well, absorption well or between absorbing well, absorption well and the absorbing well, absorption well) and discharge pipe line; Central authorities' pumping room drainage system equipment has characteristics such as power of motor is big, voltage is high, startup shut-down operation complexity, operation troubles pilosity.At present, China's mine central pump house starting mode of pump, stop, moving generally and to adopt operation manually, exist that labour intensity is big, complicated operating process, start the problem of the modernized mine management of many incompatibilities such as dwell time is long, efficient is low.At above present situation, research and development application of the present invention down-hole central authorities pumping room drainage automatic monitored control systems, this system is a research object with lake, group shore, jujube ore deposit mine, the advanced at present monitoring theory of broad incorporation in the R﹠D process, the industrial computer Controlling Technique for Programming, new technologies such as sensing technology preferably resolve the problems referred to above; In the technology that simplifies the operation, alleviate labor strength, improve the system works reliability, reduce aspects such as equipment failure rate and obtained good result; Simultaneously can realize the peak load shifting saves energy of powering.
Two, drainage system equipment situation
Common mine central pumping room drainage system equipment, its gate valve, checkgate, water jet vacuum extractor are manual operations, no electric operator; Operations such as absorbing well, absorption well water-level observation, water pump start-stop are manual type.
For realizing the water pump automatic operating, water pump gate valve of the present invention, checkgate, water jet vacuum extractor all possess manual, electronic two kinds of modes of operation, and corresponding travel switch has been installed on its electric operator.As shown in Figure 1, absorbing well, absorption well has been installed ultrasonic liquid leveller and throw-in type liquid level instrument, and water pump high voltage startup switchboard equipment has the electronics synthesis protected location of data transmission interface, switchboard is possessed realize automatic operating and the primary condition of monitoring at a distance; The pump motor stator is installed Pt100 resistance, and water pump bearing, the equal mounting temperature sensor of motor bearings have been installed ultrasonic flowmeter and the B/P EGR Back Pressure Transducer EGR of measuring the pump vacuum degree on water pump suction pipe, and pump drain pipe has been installed pressure sensor.All the sensors and travel switch signal are uploaded to corresponding digital quantity input module or analog quantity input module.For realizing the water pump automatic operating, water pump gate valve of the present invention, checkgate, water jet vacuum extractor all possess manual, electronic two kinds of modes of operation, and corresponding travel switch has been installed on its electric operator; Absorbing well, absorption well has been installed ultrasonic liquid leveller and throw-in type liquid level instrument, and water pump high voltage startup switchboard equipment has the electronics synthesis protected location of data transmission interface, switchboard is possessed realize automatic operating and the primary condition of monitoring at a distance; The pump motor stator is installed Pt100 resistance, and water pump bearing, the equal mounting temperature sensor of motor bearings have been installed ultrasonic flowmeter and the B/P EGR Back Pressure Transducer EGR of measuring the pump vacuum degree on water pump suction pipe, and pump drain pipe has been installed pressure sensor.All the sensors and travel switch signal are uploaded to corresponding digital quantity input module or analog quantity input module.
The present invention installs 5 mining multi-stage centrifugal pumps (MD280-65 * 9) with central pump house, supporting 5 motors (ykk5001-4,800KW, 6KV), the water pump drain discharge be 280 cubic metres per hour, pump head is that the invention will be further described for embodiment for 585 meters.
When starting mode of pump, in order to reduce the starting current of motor, in electric motor loop, seal in reactor, behind electric motor starting 6 seconds, with reactor excision, motor normal operation input.The used gate valve motor drive mechanism of system is many turning valves electric device, and its control point has four, and be respectively two travel switches: motor operated valve reaches the position, and motor operated valve closes and puts in place; Two torque switch: open over torque, close over torque; These contacts are normally closed contact.System is equipped with vacuum table at the inlet segment of water pump, is used for before turn on pump the vacuum of monitoring water pump, when vacuum table be designated as-during 100Pa, expression has reached vacuum, can send high pressure to motor.Delivery port at water pump is equipped with pressure meter, is used for monitoring that the water pump high pressure closes and whether the pressure of electric brake when not opening is 5.8MPa, and after electric gate valve had been opened, pressure should be about 5.2MPa.
Three, the requirement of draining automatic monitored control system design function
1, controls the drainage pump start and stop automatically according to situations such as water bunker levels;
2, control each pump impeller stream work, make every degree of wear equalization;
3, according to situations such as water bunker level, power supply peak valley section time divisions, the rational management water pump operation is saved operating cost;
4, monitor the running parameter of water pump and motor thereof in real time.As: pump capacity, pressure, axle temperature, motor temperature, electric motor starting and operating current etc.;
Have functions such as fault alarm, automatic protection;
Networking function: insert full ore deposit complex automatic system by optical fiber, utilize LAN to carry out data resource and share, realize remote measurement, remote signalling, distant control function.
Four, draining automatic monitored control system is formed
System is made up of PLC (programmable logic controller (PLC)) switch board and long-range expansion module thereof, touch-screen, test section (analog quantity and switching input module, various monitoring probe, travel switch, liquid level instrument etc.), operating part etc., and the block diagram of down-hole central authorities pumping room drainage automatic monitored control system as shown in Figure 2.Link to each other with ground maneuvers chamber computer by Industrial Ethernet, ground maneuvers chamber computer is also as the part of monitoring system.PLC programmable controller model: Siemens S7.300.
Five, draining automatic monitored control system structure
Consider operation, maintenance characteristics, this system adopts three grades of control structures on the place, and the user can be in the ground maneuvers chamber, PLC switch board and local control box are finished the monitoring to drainage system.Take all factors into consideration the requirement of system, the form that monitor network adopts PROFIBUSDP field data bus to combine with Industrial Ethernet for real-time, reliability and transmission range etc.Adopt PROFIBUS DP field data bus communication pattern between PLC and the long-range expansion module, PROFIBUS is one of at present general in the world standard for Fieldbus, meet-the IEC61158 international standard and-the JB/T10308.3-2001 standard, adopt the communication modes of repeating query between PROFIBUS DP mode main website that is wherein comprised and the slave station, be mainly used in the automated manufacturing system cell level and communicate by letter, have higher real-time and higher reliability with field level; Communicating by letter between ground maneuvers chamber computer and the PLC adopted Industrial Ethernet, Industrial Ethernet has been based on the powerful zone of IEEE 802.3 (Ethernet) and unit networks, utilize Industrial Ethernet, a seamless approach that is integrated into the new multimedia world is provided.This network structure in conjunction with PROFIBUS DP field data bus and Industrial Ethernet can be taken into account the ipc monitor platform that reliable field control platform and hommization are provided, and meets the development trend of industrial control field.
The user finishes setting for separate unit water pump operation mode at local control box, can be set on the spot, in semi-automatic, full-automatic three kinds of modes any one.When being set at when full-automatic, water pump will be according to condition automatic start-stops such as water levels.So three grades of control structures mainly be on the spot with semi-automatic dual mode.On the spot under the case control control mode, the user finishes operation to the separate unit water pump at case on the spot; Semi-automatic mode is divided into the control of touch-screen collection and two kinds (setting at touch-screen) of control centre's collection control, corresponding touch-screen one key start and stop and centralized control center's one key start and stop respectively.System architecture as shown in Figure 3.
1, case control control on the spot
This control mode mainly makes things convenient for the user that the executing agency of system is safeguarded, under this mode, the user utilizes button and the man-to-man operation ball valve of indicator lamp, gate valve and the vacuum pump etc. on the case on the spot, for the personal safety that guarantees the attendant and prevent that other people from carrying out maloperation to equipment in safeguarding, the control hierarchy of case control mode on the spot is made as the superlative degree, touch-screen and centralized control center's water pump monitor terminal can only be monitored under this mode, and it is invalid to operate.
2, semi-automatic touch-screen collection control
The operator can finish start and stop and the status monitoring to each water pump under this control mode on the touch-screen of the PLC switch board of down-hole central authorities pump house, the user only needs started by press/stop key on touch-screen, touch-screen is issued to the CPU module of PLC switch board with order, and the PLC switch board will be finished the startup of water pump and stops according to control logic.
3, semi-automatic control room collection control
Under this control mode the operator the computer monitoring terminal of ground maneuvers chamber finish start and stop and status monitoring to each water pump, the user issues startup/halt instruction at operating terminal, instruction is issued to the PLC switch board by computer server by Industrial Ethernet, watch mutually with the control of semi-automatic touch-screen collection, remaining work is finished by the PLC switch board.
4, full-automatic mode
The water pump that drops into fully automatic operation is fully by the control of PLC switch board, and the user only need monitor, and water pump will be according to condition automatic start-stops such as water levels.
5, function software
For adaptive system needs, an operating terminal is respectively established in down-hole and control room.The downhole operations terminal is selected Siemens TP270 series touch-screen for use, is installed on the PLC switch board, and carries out configuration with monitoring PLC, finishes the down-hole centralized Control; Select for use the magnificent Industrial Personal Computer (IPC) of grinding of stable performance as operating terminal in the control room, terminal is finished and the communicating by letter of downhole monitoring PLC by the communication server, reads water pump work at present state, issues remote control command.
6, down-hole touch screen operation terminal
As the control terminal of down-hole, must be able to adapt to abominable site environment and meet the requirement of safety code, selected TP270 series touch screen structure compactness, adopt 24V direct current supply, safe and reliable.Utilize PROTOOL developing instrument development and operation software, binding operation personnel's routine work scope, this function software integrates control, monitors and reports to the police, the operator can finish the opening of water pump under a monitored picture, stop controlling, the reading of real-time state monitoring and fault message, and has perfect in shape and function, characteristics simple to operate.
7, ground maneuvers chamber operating terminal
The terminal Industrial Personal Computer (IPC) is as the part of ground maneuvers chamber Control Network, can make things convenient for to such an extent that read information in the data server, therefore the record and the demonstration of historical data, curve etc. on the basis of the function that is possessed that possesses the downhole operations terminal, have been increased, handled easily person grasps the service behavior in equipment a period of time, in time overhauls and safeguards.
Six, drainage pump starts the shut-down operation program
1, starting mode of pump condition:
(1) the absorbing well, absorption well water level is moderate.
(2) starting mode of pump high-tension switch cabinet fault-free, its circuit breaker position is normal, and electric power system voltage is in allowed band.
(3) ball valve of gate valve, water jet vacuum extractor is in correct fastening position.
(4) the vacuum pump ball valve is in correct fastening position.
(5) each temperature survey point temperature of equipment is normal.
(6) signal such as pressure sensor, B/P EGR Back Pressure Transducer EGR is normal.
(7) system's fault-free.
Above starting mode of pump condition can be judged voluntarily by PLC switch board computer.
2, the means of the judgement of starting mode of pump condition and method: (referring to Fig. 1)
(1) absorbing well, absorption well water level:
Measured by the ultrasonic liquid leveller that absorbing well, absorption well is installed, measured signal is a continuous signal, can reflect the absorbing well, absorption well water level in real time, from 0 meter～6 meters continuous measurements; We set in program, and turn on pump during 4.5 meters of absorbing well, absorption well high water level is reported to the police 1.5 meters terminations of pumping of lowest water level in the time of 4.7 meters.And this setting value can adjust according to the silt coal slime situation of absorbing well, absorption well, is the measuring reliability of flooding, and we have also set up a throw-in type liquid level instrument, and the two is standby mutually.The water level signal that limnimeter is surveyed is introduced into the analog quantity input module, is uploaded to the PLC switch board again, shows on the computer interface of monitoring system at any time.
(2) starting mode of pump high-tension switch cabinet status monitoring:
The starting mode of pump high-tension switch cabinet is equipped with the various parameters of electronics synthesis protected location (adopting the auspicious guarantor that continues in south) switchboard; the position signals of voltage, electric current, power, power factor, switchboard line breaker enters PLC switch board (see figure 2) PLC switch board by the RS485 communication modes just can judge voluntarily according to the information of uploading whether high-tension switch cabinet possesses entry condition; in service when abnormal parameters such as switchboard electric current, voltage (overcurrent, overvoltage, under-voltage), system designs respectively and reports to the police or delayed shutdown.
(3) ball valve of gate valve, water jet vacuum extractor, the checkgate valve position is judged:
Judging by the travel switch of installing in the above that valve position is in closes or opening, the switching value signal that travel switch provides is sent to digital quantity input module, be sent to long-range expansion module after in module, handling, be sent to the PLC switch board through the field data bus again, judge for the PLC logical operation.
(4) vacuum pump ball valve valve position judges it also is to provide signal, its same gate valve in signal load mode path by superincumbent travel switch is installed.
(5) measurement of each point for measuring temperature temperature of equipment:
Motor stator winding the is pre-buried resistance of Pt100, motor bearings, water pump bearing have also been installed temp probe respectively, measured signal is sent to the multipath temperature patrol inspection instrument earlier, after calculating temperature signal, by the RS485 communication modes, data are sent to long-range expansion module, are sent to the PLC switch board through the field data bus again, judge control for computer logic.In the PLC programmable controller, set the ceiling temperature of motor stator, motor bearings, water pump bearing respectively, the ceiling temperature value is the two-stage parameter, when reaching first order temperature, system alarm also shows, when reaching second level temperature, control system stops water pump automatically and avoids device damage, and the measured temperature of above each point all can show on the computer interface of control system in real time.
(6) pressure sensor, B/P EGR Back Pressure Transducer EGR signal:
Should earlier pump chamber be vacuumized before the turn on pump, on the suction water pipe vacuum table of water pump, B/P EGR Back Pressure Transducer EGR has been installed, its signal is sent to the analog quantity input module earlier, be sent to the PLC switch board through the field data bus again, its negative pressure value can be measured in real time, when negative pressure value reach-represent that water pump vacuumizes during 100Pa, water pump can start, otherwise water pump can not start.It is identical with path and B/P EGR Back Pressure Transducer EGR that its data mode of pressure sensor (pressure transmitter) has been installed on the pressure meter of gutter, after the normal unlatching of water pump, pressure should be about 5.2MPa, if pressure is lower than 5Mpa, normally draining of water pump is described, system alarm time-delay termination of pumping after 50 seconds is in case water pump damages.
(7) system failure is judged:
The PLC switch board is according to the various information that collect at the scene, judge the various parameter values in the drainage system, the parameter values that collects is compared with the system alarm setting value, if data exception, fault has been described, the PLC switch board will drive alarm equipment alarm and show fault category; For example overcurrent, under-voltage, overvoltage, bearing temperature exceed standard, valve position is undesired, the water pump drain discharge is low etc., require termination of pumping in case of necessity according to program setting.
3, starting mode of pump technological process
(1) full-automatic mode:
When the drainage system working method is chosen to be when full-automatic, below system's start-up routine: when the absorbing well, absorption well water level is lower than 1.5 meters, system starts the turn on pump program automatically, at first the PLC switch board judges that according to the information of collecting various valve position are in the tram, equipment each survey that prison point temperature value is normal, pressure, the negative pressure signal value is normal, high voltage startup switchboard circuit breaker position is normal, after electric parameter is normal, judge that water pump has possessed entry condition.
PLC switch board generation control instruction at first, (the water pump vacuum extractor is divided into two kinds: a kind of is vacuum pump to the work of order water pump vacuum extractor, and a kind of is water jet device, working properly for guaranteeing vacuum extractor, we have all installed two kinds of vacuum extractors, a cover job, and a cover is standby; Control system is selected a wherein cover job voluntarily) the PLC work order is sent to executing agency through corresponding data transfer path with instruction, vacuum extractor work, treat the pump vacuum degree reach-during 100Pa, water pump high-tension switch cabinet startup automatically send electricity, delays time 2 seconds, and gate is opened in the action of pump drain pipe gate valve motor drive mechanism, when treating that the draining meter pressure is stabilized in 5.2MPa, illustrate that water pump normally starts, draining begins, and whole process does not need artificial participation.
(2) the semi-automatic method of operation:
When system operation mode is elected the semi-automatic method of operation as, it is the long-range semi-automatic operations in ground maneuvers chamber that two operation interfaces available are arranged, the 2nd, the semi-automatic operation of down-hole touch-screen. (all data of PLC switch board reach the indoor computer of ground maneuvers by Ethernet) operating personnel are on the screen of ground maneuvers chamber computer when being elected as the long-range semi-automatic operation in ground maneuvers chamber, click the start button of certain water pump, then certain water pump starts automatically, it also is like this stopping water pump, but the various operational factors of the computer real-time monitored water pump of ground maneuvers chamber, as: voltage, electric current, power, power factor, the water pump discharge pressure, pump capacity, running time, the water pump drain discharge, the parameters such as temperature of each temperature survey point of equipment, failure condition, report to the police and the demonstration fault type, but emergency is pump trip also, and the PLC switch board is according to predefined program start and stop water pump.
When the semi-automatic method of operation is elected down-hole touch-screen collection control as, the startup that operating personnel can finish on the touch-screen of down-hole PLC switch board every water pump stops and status checkout, only need to press the startup stop key on touch-screen, the PLC switch board just can be finished the startup shut-down operation of flowing water pump according to control program.
(3) when system operating mode is elected local control box control as, when starting water pump, operating personnel check earlier whether the pump motor state is intact, whether each valve location is normal, whether water level is normal, whether electric parameter normally waits and judges can turn on pump the time, pressing the ball valve of start button (vacuum pump or the water jet vacuum extractor) vacuum extractor of vacuum extractor earlier opens, vacuum extractor work starts, after treating that the pump vacuum degree reaches requirement, close the valve of vacuum extractor, vacuum extractor quits work, press water pump high-tension switch cabinet start button, press the gate valve switch button again, after water-aspirator pressure is normal, the starting mode of pump success.During termination of pumping, press the closing gate button earlier, after closing gate puts in place, press starting mode of pump cabinet stop button again, water pump is out of service, and termination of pumping finishes, and stops all to finish at the local operation case with the startup of charging pump.
In addition owing to the selected gate of system, valve etc. are manual and electric dual-purpose, so when motor drive mechanism lost efficacy, drainage system can start or stop water pump under artificial fully mode.
4, water pump operation status monitoring;
The signal that each survey mark of drainage system equipment is measured, enter corresponding digital quantity or analog quantity input module respectively, enter the PLC switch board after the processing, on the touch-screen of PLC switch board, show in real time, the various parameters of drainage system, for example, electric moter voltage, starting current, running current, power, power factor, discharge pressure, the water pump drain discharge, the absorbing well, absorption well water level, the on off state of various valves, various bearing temperatures, above parameter such as motor temperature is sent to the computer of ground maneuvers chamber by Ethernet, on the function screen of ground maneuvers chamber computer, show in real time, as break down, system alarm also is being provided with time-delay termination of pumping function according to fault.
5, stopping of water pump:
(1) normal termination of pumping, so-called normal termination of pumping are meant that pump working is normal and the absorbing well, absorption well water level drained into termination of pumping when minimum.When control mode is elected local control box as, need manually press the closing gate button, press pump switch cabinet stop button again and come termination of pumping, when control mode is elected semi-automatic operation or fully automatic operation as, need not manually-operated, the water level signal that PLC provides according to absorbing well, absorption well liquid level instrument when water level drains into when minimum, requires the program of water pump according to logical operation control to stop automatically.
(2) fault termination of pumping,
When drainage system equipment breaks down; for example pump motor overtemperature, bearing overtemperature, discharge pressure undesired, when drain discharge is lower than situations such as normal value 20%; computer is reported to the police automatically; when control mode is elected local control box as; need the button termination of pumping on the manually-operated local control box, when control mode is elected as semi-automatic or during full self-operating, PLC is according to logic control; the time-delay pump trip, protection equipment.
Seven, Water drainage system design requires implementation, the flow process of function.
1, according to the start and stop of situation automatically controlled water pumps such as absorbing well, absorption well water level and operation platform number.Under semi-automatic or fully automatic operation mode, when absorbing well, absorption well water level to 4.5 meter; The PLC switch board judges that according to logical program is first-selected which platform pump possesses entry condition, selects wherein the instruction of a pump by logic control voluntarily, the starting mode of pump that it is selected; Behind the starting mode of pump, at any time the monitoring, arithmetic system various parameters, after water pump is opened, if (this value also can be adjusted for programmed values) system will open the back at first water pump and open an other water pump within half an hour automatically and strengthen the ability of draining when the speed of absorbing well, absorption well drawdown per hour is lower than 0.5 meter, if absorbing well, absorption well drawdown speed still do not reach per hour 0.5 meter, restart a water pump, satisfy the design load requirement until absorbing well, absorption well drawdown speed.Purpose is that the drainability and the actual water yield of mine that ensure Mine Drainage System are complementary, ensure draining safety, when the absorbing well, absorption well water level drained into 1.5 meters, PLC switch board control follow procedure was automatically by the platform pump sequence shutdown, starting or stoping 6 minutes blanking times between two water pumps.
2, control each water pump and take turns to operate, make every water pump degree of wear equalization.
The running time of every water pump, all have in the computer of PLC switch board monitoring system and write down the row operation of going forward side by side; After a water pump accumulative total was worked 10 hours, an other water pump operation will be selected by system; Our central pump house is equipped with 5 water pumps, and computer can take turns or intersect to start water pump according to logic operation result, and separate unit or many operations guarantee that the running time of each water pump is suitable.
3, according to the absorbing well, absorption well water level, situations such as power supply peak valley section time division, the rational management water pump operation is saved operating cost.Be provided with in the PLC programmable and keep away peak time, for example: the morning, 8:00～12:00 was a peak of power consumption, in this time period input PLC program, PLC switch board computer is according to situations such as absorbing well, absorption well water level situation, the absorbing well, absorption well water level rates of climb, computer is selected Running pump time, turn on pump platform number automatically, guarantee that water pump operation is reasonable, before 8:00, reduce the water level of absorbing well, absorption well minimum, make the water pump operation time avoid 8:00～12:00, rise to 4.5 meters then still normally startups of water pump in 8:00～12:00 time period such as absorbing well, absorption well water level, guarantee draining safety.In draining safety with keep away between the peak time, obey the principle of draining safety in line with keeping away peak time.
4, monitor the running parameter of water pump and motor in real time.All kinds of probes of each survey mark of drainage system, the measured data of travel switch enter the PLC switch board by certain transmission means and path and show in real time on the touch-screen of PLC switch board, be uploaded to the ground maneuvers chamber by Ethernet, monitoring in real time on the computer screen of ground maneuvers chamber.
5, have fault alarm, automatic protection functions; Narration in front.
6, networking function: insert full ore deposit complex automatic system by optical fiber, utilize LAN to carry out data resource and share, realize remote measurement, remote signalling, distant control function.Narration in front.
Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and protection domain are limited; under the prerequisite that does not break away from design concept of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement all should fall into protection scope of the present invention.
Claims (5)
1, the central pumping room drainage automatic monitored control system in a kind of down-hole, comprising: down-hole pumping room drainage system of central authorities and draining automatic monitored control system is characterized in that:
Down-hole pumping room drainage system of central authorities comprises: water pump and motor, starting mode of pump high-tension switch cabinet, sump, absorbing well, absorption well, water pump vacuum extractor, gate valve, flap valve, bottom valve, checkgate and discharge pipe line; Gate valve, flap valve are installed on the discharge pipe line, and bottom valve is installed in the water pump suction pipe end, and checkgate is installed between sump and the absorbing well, absorption well or between absorbing well, absorption well and the absorbing well, absorption well; Gate valve of the present invention, checkgate, water pump vacuum extractor all possess manual, electronic two kinds of modes of operation, and on its electric operator travel switch have been installed; Absorbing well, absorption well has been installed ultrasonic liquid leveller; Water pump high voltage startup switchboard equipment has the electronics synthesis protected location of data transmission interface, realizes automatic operating and monitoring at a distance; The pump motor stator is installed Pt100 resistance, and water pump bearing, the equal mounting temperature sensor of motor bearings have been installed ultrasonic flowmeter and the B/P EGR Back Pressure Transducer EGR of measuring the pump vacuum degree on water pump suction pipe; Pump drain pipe has been installed pressure sensor; All the sensors and travel switch signal are uploaded to corresponding digital quantity input module or analog quantity input module; System is equipped with vacuum table at the inlet segment of water pump, is used for the vacuum of monitoring water pump before turn on pump; Delivery port at water pump is equipped with pressure meter, is used for monitoring that the water pump high pressure closes and the pressure of electric brake when not opening;
The draining automatic monitored control system comprises: PLC switch board and long-range expansion module thereof, field data bus, touch-screen, analog quantity and switching input module, various monitoring probe, travel switch, liquid level instrument, operating part link to each other with ground maneuvers chamber computer by Industrial Ethernet;
(1) absorbing well, absorption well water level monitoring: measure by the ultrasonic liquid leveller that absorbing well, absorption well is installed, measured signal is a continuous signal, can reflect the absorbing well, absorption well water level in real time, the water level signal that ultrasonic liquid leveller is surveyed is introduced into the analog quantity input module, be uploaded to the PLC switch board again, on the computer interface of monitoring system, show at any time; The absorbing well, absorption well high water level is turn on pump, termination of pumping when the value of setting;
(2) starting mode of pump high-tension switch cabinet status monitoring: the starting mode of pump high-tension switch cabinet is equipped with the electronics synthesis protected location, the various parameters of switchboard, the position signalling of voltage, electric current, power, power factor, switchboard line breaker enters the PLC switch board by the RS485 communication modes, the PLC switch board just can judge voluntarily according to the information of uploading whether high-tension switch cabinet possesses entry condition, in service when switchboard electric current, voltage parameter overcurrent, overvoltage appear, when under-voltage is unusual, system designs respectively and reports to the police or delayed shutdown;
(3) ball valve of gate valve, water jet vacuum extractor, the checkgate valve position is judged: judge by the travel switch of installing in the above that valve position is in and close or opening, the switching value signal that travel switch provides is sent to digital quantity input module, be sent to long-range expansion module after in module, handling, be sent to the PLC switch board through the field data bus again, judge for the PLC logical operation;
(4) vacuum pump ball valve valve position is judged: judge by the travel switch of installing in the above that valve position is in and close or opening, the switching value signal that travel switch provides is sent to digital quantity input module, be sent to long-range expansion module after in module, handling, be sent to the PLC switch board through the field data bus again, judge for the PLC logical operation;
(5) measurement of each point for measuring temperature temperature of equipment: motor stator winding the is pre-buried resistance of Pt100, motor bearings, water pump bearing have also been installed temp probe respectively, measured signal is sent to the multipath temperature patrol inspection instrument earlier, after calculating temperature signal, by the RS485 communication modes, data are sent to long-range expansion module, are sent to the PLC switch board through the field data bus again, judge control for computer logic; In the PLC programmable controller, set the ceiling temperature of motor stator, motor bearings, water pump bearing respectively, the ceiling temperature value is the two-stage parameter, when reaching first order temperature, system alarm also shows, when reaching second level temperature, control system stops water pump automatically and avoids device damage, and the measured temperature of above each point all can show on the computer interface of control system in real time;
(6) pressure sensor, B/P EGR Back Pressure Transducer EGR signal measurement: should earlier pump chamber be vacuumized before the turn on pump, on the suction water pipe vacuum table of water pump, B/P EGR Back Pressure Transducer EGR has been installed, its signal is sent to the analog quantity input module earlier, be sent to the PLC switch board through the field data bus again, its negative pressure value can be measured in real time, represent that water pump vacuumizes when negative pressure value reaches setting value, water pump can start, otherwise water pump can not start; On the pressure meter of gutter pressure sensor has been installed, its data mode is identical with path and B/P EGR Back Pressure Transducer EGR;
(7) system failure is judged: the PLC switch board is according to the various information that collect at the scene, judge the various parameter values in the drainage system, the parameter values that collects is compared with the system alarm setting value, if data exception, fault has been described, the PLC switch board will drive alarm equipment alarm and show fault category, require termination of pumping according to program setting;
(8) according to the start and stop of absorbing well, absorption well water level situation automatically controlled water pump and operation platform number: under semi-automatic or fully automatic operation mode, when the absorbing well, absorption well water level when setting value, the PLC switch board judges that according to logical program is first-selected which platform pump possesses entry condition, select wherein of the instruction of a pump voluntarily, the starting mode of pump that it is selected by logic control; Behind the starting mode of pump, at any time the monitoring, arithmetic system various parameters, after water pump is opened, if the speed of absorbing well, absorption well drawdown is lower than setting value, the back is opened other water pump increasing draining automatically within half an hour ability will be opened at first water pump by system, if absorbing well, absorption well drawdown speed still do not reach setting value, restart a water pump, satisfy the design load requirement until absorbing well, absorption well drawdown speed; When the absorbing well, absorption well water level drained into setting value, PLC switch board control follow procedure was automatically by the platform pump sequence shutdown; The running time of every water pump, all have in the PLC switch board computer and write down the row operation of going forward side by side; After a water pump accumulative total is worked setting value, an other water pump operation will be selected by system; Computer can take turns or intersect to start water pump according to logic operation result, and separate unit or many operations are controlled each water pump and taken turns to operate, and make every water pump degree of wear equalization, guarantee that the running time of each water pump is suitable;
(9) according to the absorbing well, absorption well water level, power supply peak valley section time dividing condition, in the PLC programmable controller, be provided with and keep away the peak time section, in this time period input PLC program, PLC selects Running pump time, turn on pump platform number automatically according to absorbing well, absorption well water level situation, absorbing well, absorption well water level rate of climb situation, guarantees that water pump operation is reasonable, in draining safety with keep away between the peak time, obey the principle of draining safety in line with keeping away peak time.
2, the central pumping room drainage automatic monitored control system in down-hole according to claim 1 is characterized in that: seal in reactor in described pump motor loop, reactor is excised the motor normal operation input behind electric motor starting.
3, the central pumping room drainage automatic monitored control system in down-hole according to claim 1 is characterized in that: set up a throw-in type liquid level instrument in absorbing well, absorption well.
4, the central pumping room drainage automatic monitored control system in down-hole according to claim 1 system, it is characterized in that: used gate valve motor drive mechanism is many turning valves electric device, its control point has four, and be respectively two travel switches: motor operated valve reaches the position, and motor operated valve closes and puts in place; Two torque switch: open over torque, close over torque; These contacts are normally closed contact.
5, the central pumping room drainage automatic monitored control system in down-hole according to claim 1, it is characterized in that: described draining automatic monitored control system adopts three grades of control structures, and the user can be in the ground maneuvers chamber, PLC switch board and local control box are finished the monitoring to drainage system; The form that monitor network adopts PROFIBUS DP field data bus to combine with Industrial Ethernet; Adopt PROFIBUS DP field data bus communication pattern between PLC switch board and the long-range expansion module; Communicating by letter between ground maneuvers chamber computer and the PLC switch board adopted Industrial Ethernet.
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| CN2008101592504A CN101476486B (en) | 2008-11-26 | 2008-11-26 | Automatic monitoring system for down-hole central pumping room drainage |
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| CN2008101592504A CN101476486B (en) | 2008-11-26 | 2008-11-26 | Automatic monitoring system for down-hole central pumping room drainage |
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