CN204570911U - Power station maintenance collecting well drainage control system - Google Patents

Power station maintenance collecting well drainage control system Download PDF

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Publication number
CN204570911U
CN204570911U CN201520129879.XU CN201520129879U CN204570911U CN 204570911 U CN204570911 U CN 204570911U CN 201520129879 U CN201520129879 U CN 201520129879U CN 204570911 U CN204570911 U CN 204570911U
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China
Prior art keywords
collecting well
control
power
switch
pump
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Active
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CN201520129879.XU
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Chinese (zh)
Inventor
乔松
乔峰
张占军
游冠宇
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Yunnan Neng Touwei Scholar Science And Technology Co Ltd
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Yunnan Neng Touwei Scholar Science And Technology Co Ltd
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Abstract

The utility model power station maintenance collecting well drainage control system, comprises switch board, is provided with collecting well drain control unit in described switch board, and the pump motor group, collecting well fluid level switch, the collecting well fluid level sensor that are connected with described control device respectively; Wherein said collecting well drain control unit comprises PLC, and the operation display panel be connected with described PLC respectively, warning device, pump motor group starting-up later time, pump motor group control loop, controls power transmission road and relay control device in electric power loop, power transfer device, switching power unit, On-off signal unit, switch amount output unit, analog input unit, analog output unit, communication module and passive null contact switch amount; Described collecting well drain control unit is connected with full factory monitoring system by power transmission road, analog output module and communication module in hard contact switch amount; Described pump motor group is provided with two pump motors.

Description

Power station maintenance collecting well drainage control system
Technical field
The utility model relates to a kind of power station maintenance collecting well drainage control system.
Background technology
Power station maintenance collecting well drainage control system is the important component part of the public auxiliary equipment in power station, and drainage for overhaul control system mainly controls the object such as water pump, collecting well water level of water drainage system for maintenance, protect, monitors and measures; Two water pumps water pump is primary, and one for subsequent use, and can be for subsequent use each other; In collecting well, be furnished with liquid-level switch or level sensor, to monitor water level, the start-stop of automatically controlled water pump simultaneously, ensures the safety of equipment, meets manufacturing technique requirent.
At present, control based on traditional conventional relays, because easy break-down, the not factor such as easy care, complex structure cannot take turns the technology of the work/standby mode of water-change pump or the weak signal testing of unity logic process, the needs that hydropower station at present " few people on duty, unmanned " develops can not be met, simultaneously can not realize Large Volume Data with full factory monitoring system to exchange, can not the operation conditions of real-time display system and query history service data.
Utility model content
For the problems referred to above, the utility model provides a kind of power station of the problem realizing intelligent control and carry out exchanges data to overhaul collecting well drainage control system.
For reaching above-mentioned utility model object, the utility model power station maintenance collecting well drainage control system, comprise switch board, collecting well drain control unit is provided with in described switch board, and the pump motor group, collecting well fluid level switch, the collecting well fluid level sensor that are connected with described control device respectively;
Wherein said collecting well drain control unit comprises PLC, and the operation display panel be connected with described PLC respectively, warning device, pump motor group starting-up later time, pump motor group control loop, controls power transmission road and relay control device in electric power loop, power transfer device, switching power unit, On-off signal unit, switch amount output unit, analog input unit, analog output unit, communication module and passive null contact switch amount;
Described collecting well drain control unit is connected with full factory monitoring system by power transmission road, analog output module and communication module in hard contact switch amount; Described pump motor group is provided with two pump motors, a work drive motor (No. 1 pump) He Yitai motor for subsequent use (No. 2 pumps);
Described collecting well is connected with the hydraulic turbine by water pipeline.
Further, described collecting well fluid level switch is float type level switch, and described float type level switch has three pairs of output contacts, and described output contact is respectively working barrel priming level, stand by pump starts and alarm water level, termination of pumping water level.
Particularly, described pump motor group starting-up later time number and pump motor number match; Described motor main circuit by inlet wire lightning protection device, motor main circuit line breaker, motor contactor, soft initiator and thermal protection for motors relay, main circuit power voltage indicating instrument, motor switch, in sequential seriesly to form.
Further, described motor main circuit line breaker has thermal and magnetic dropout short-circuit protection.
Further, described collecting well drain control unit also comprises temperature and humidity controller, lighting device and warning device; Described lighting device and being arranged in the cabinet of described collecting well drain control unit.
Particularly, described operation display panel is liquid crystal touch screen; Described display floater comprises alarm window, button, changeover switch.
Further, described warning device at least comprises warning circuit and indicator lamp, and wherein said indicator lamp comprises water pump operation status indicator lamp, fault of water pump indicator lamp, controls power failure lamp, PLC malfunction indicator lamp.
Particularly, described switch board appearance and size height, wide, be thickly respectively 2260mm, 800m, 600mm; The power line of described switch board and control signal wire all press inlet wire and lower outlet is arranged.
Further, described control electric power loop adopts two ac power supply, and described operation display panel is provided with switch dual power knob.
Particularly, described communication module is MODBUS protocol module or PROFIBUS protocol module.
Compared with prior art, the beneficial effects of the utility model are: the utility model adopts liquid-level switch, liquid level sensor carries out water level and automatically controls, and the control signal of two kinds of different principle participates in controlling, mutually verifying simultaneously, ensure that the reliability of control; When water level rises too fast, after feed pump motor has little time draining, the PLC of collecting well drain control unit can drop into draining while that reserve pump motor carrying out automatically, and guaranteed water level is in the scope required; When feed pump electrical fault, PLC also can excise feed pump motor automatically, drops into reserve pump motor and carries out draining, thus achieve the Based Intelligent Control of collecting well draining; High performance PLC can gather the water level of collecting well automatically, the working signal of the parts such as pump motor, and reports to the police to the fault occurred thus ensure that fault is processed in time, the coherent signal of collection is passed to plant area's monitoring system simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model power station maintenance collecting well drainage control system automatic control flow chart figure.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is further described.
Power station is typically provided with a bite unit maintenance collecting well, and deep well pump is as overhauling collecting well draining use during unit maintenance, water drainage system for maintenance generally arranges two water pumps; Drainage for overhaul control system comprises two water pumps and controls, and according to the specific requirement of site plant technological design, can increase lubrication water solenoid valve and control.
Drainage for overhaul control system mainly controls the object such as water pump, collecting well water level of water drainage system for maintenance, protect, monitors and measures; Two water pumps water pump is primary, and one for subsequent use, and can be for subsequent use each other; In collecting well, be furnished with liquid-level switch or level sensor, to monitor water level, the start-stop of automatically controlled water pump simultaneously, ensures the safety of equipment, meets manufacturing technique requirent.
As shown in Figure 1, power station maintenance collecting well drainage control system automatic control flow chart figure.
The utility model power station maintenance collecting well drainage control system, comprise switch board, collecting well drain control unit 2 is provided with in described switch board, and the pump motor group 3, collecting well fluid level switch, the collecting well fluid level sensor 6 that are connected with described control device respectively;
Wherein said collecting well drain control unit comprises PLC, and the operation display panel be connected with described PLC respectively, warning device, pump motor group starting-up later time, pump motor group control loop, controls power transmission road and relay control device in electric power loop, power transfer device, switching power unit, On-off signal unit, switch amount output unit, analog input unit, analog output unit, communication module and passive null contact switch amount;
Described collecting well drain control unit is connected with full factory monitoring system by power transmission road, analog output module and communication module in hard contact switch amount; Described pump motor group is provided with two pump motors, a work drive motor (No. 1 pump) 7 and a motor for subsequent use (No. 2 pumps) 8;
Described collecting well 1 is connected 4 by water pipeline 5 with the hydraulic turbine.
Further, described collecting well fluid level switch is float type level switch, and described float type level switch has three pairs of output contacts, and described output contact is respectively working barrel priming level, stand by pump starts and alarm water level, termination of pumping water level.
Particularly, described pump motor group starting-up later time number and pump motor number match; Described motor main circuit by inlet wire lightning protection device, motor main circuit line breaker, motor contactor, soft initiator and thermal protection for motors relay, main circuit power voltage indicating instrument, motor switch, in sequential seriesly to form.
Further, described motor main circuit line breaker has thermal and magnetic dropout short-circuit protection.
Further, described collecting well drain control unit also comprises temperature and humidity controller, lighting device and warning device; Described lighting device and being arranged in the cabinet of described collecting well drain control unit.
Particularly, described operation display panel is liquid crystal touch screen; Described display floater comprises alarm window, button, changeover switch.
Further, described warning device at least comprises warning circuit and indicator lamp, and wherein said indicator lamp comprises water pump operation status indicator lamp, fault of water pump indicator lamp, controls power failure lamp, PLC malfunction indicator lamp.
Particularly, described switch board appearance and size height, wide, be thickly respectively 2260mm, 800m, 600mm; The power line of described switch board and control signal wire all press inlet wire and lower outlet is arranged.
Further, described control electric power loop adopts two ac power supply, and described operation display panel is provided with switch dual power knob.
1, control principle
(1) collecting well is provided with a float type level switch, with three pairs of output contacts (working barrel priming level, stand by pump start and alarm water level, termination of pumping water level).
(2) water pump is as the draining use of overhauling collecting well during unit maintenance, and every platform deep well pump has automatically, manually, excise three kinds of work condition states.Under automatic operating, system determines working barrel, stand by pump automatically by start-stop time, and computer supervisory control system is sent in the position of the switch to way selection.
(3) under manual operating mode, the control of pump is independent of PLC, and each pump is provided with one group of " open, stop " manual operation button, is directly controlled the start and stop of water pump by operating personnel in manual work mode through soft initiator.
(4) control the two ac power supply of power acquisition, control flow can meet Dual-power automatic switching requirement.
(5) under automatic control mode, pump controls by automatic control flow chart, the energy manual operation when automated manner exits, and the interface of reserved remote operation (considering digital communication mode and hardwire two kinds of modes).
(6) primary, spare water pump can adopt manual type to select, and can adopt number of starts automatic alternate.
(7) automatic control flow chart
A, collecting well water level control to adopt liquid-level switch to control automatically, establish tertiary effluent position altogether: working barrel priming level; Stand by pump starts alarm water level and termination of pumping water level.
B, under automatic control mode, water level rise to working barrel start time, start working barrel, when water level is down to stopping water level, pump trip.
C, when water level continue to be increased to stand by pump start alarm water level time, start stand by pump, send alarm signal simultaneously, termination of pumping when water level is down to stopping water level.
When pump is under operation because of any cause trouble, automatically stop fault pump, start rear stage stand by pump, and send corresponding fault-signal.
2, other function of unit
(1) system failure automatic diagnosis
The each equipment state of water drainage system for maintenance control unit real-time monitoring system and signal, and carry out breakdown judge, process and reporting fault signal in time.
(2) protection and warning function
1) native system configures complete control, protection, measurement function to pump motor, makes full use of line breaker, the defencive function of soft initiator implements the protections such as overcurrent, overload, overvoltage and phase shortage to motor.Major loop line breaker has thermal and magnetic dropout short-circuit protection.
2) software protection function: PLC software has fault self-diagnosis function, can judge, by PLC and alarm in time to faults such as PLC module fault, analog measurement measure loop broken strings.In addition, establishment PLC software program controls, and avoids water pump frequent starting off and at short notice.
3) break down in water pump operation process and report to the police immediately, and stop the operation of fault water pump, automatically drop into reserve pump and run.And fault-signal will send LCU for generator set generator.
4) signal lamp alarm content: water pump operation, fault of water pump, control power monitoring, control power failure, PLC fault-signal.
5) pump motor fault definition:
A, incoming power air-break emergency stop valve trip
B, soft initiator fault
C, startup command send in rear 5S time (adjustable) and do not receive operation feedback signal.
D, ceasing and desisting order to send in rear 5S time (adjustable) does not receive stopping feedback signal.
3, system configuration
(1) water drainage system for maintenance Automation Elements, electric fixtures and I/O measuring point
Water drainage system for maintenance Automation Elements and electric fixtures table (user provides for oneself)
Sequence number Title Technical data Unit Quantity
1 Liquid-level switch Three pairs of output contacts Cover 1
2 Deep well pump AC380V 37kW Platform 2
The list of drainage for overhaul control system PLC I/O measuring point
(2) composition of control system and configuration
Drainage for overhaul control system is made up of a control flow.The height of screen cabinet appearance and size, wide, be thickly respectively 2260mm, 800m, 600mm; The power line of screen cabinet and control signal wire all press inlet wire and lower outlet is arranged; Control flow overlaps built with PLC 1, operation display panel (signal lamp, alarm window, button, changeover switch), power transfer device, switching power unit, control relay and temperature control equipment, the starting drive of 2 deep well pumps comprises: lead-in circuit breaker, contactor, soft initiator and installation accessories, main circuit power voltage indicating instrument etc.
Equipments Setting detailed statement
Sequence number Device name Unit Quantity Remarks
1 Motor breaking device Only 2
2 Motor contactor Only 2
3 Programmable logic controller Cover 1
4 Air switch Only 3
5 Button Only 5
6 Selector switch Only 2
7 Indicator lamp Only 7
8 Relay Individual 14
9 Isolating transformer Individual 2
10 Dc source Individual 2
11 Isolating diode Individual 4
4, communication function
(1) important signal passive null contact is caused the I/O device of pump motor group LCU by this control system.
(2) this control system is connected with LCU by (MODBUS, PROFIBUS agreement) communication modes.
(3) PLC has the interface carrying out with portable computer with debugging being connected.
The passive switch amount signal of upper conveying pump group of motors LCU mainly contains:
Hand/automated location
Drainage pump fault
Collecting well water level is too high
Unlubricated water
Stand by pump starts
PLC fault
Sensor fault
Soft initiator fault
Power failure etc.
The information of conveying pump group of motors LCU on communication modes:
Change-over switch location status
Drainage pump fault
Drainage pump runs/stops
Collecting well water level is too high
Unlubricated water
Stand by pump starts
PLC fault
Sensor fault
Soft initiator fault
Power failure
Water level consecutive variations amount
Each drainage pump action frequency, each record comprises title, state and markers
The utility model be should be understood that; above-described embodiment; further detailed description has been carried out to the purpose of this utility model, technical scheme and beneficial effect; these are only embodiment of the present utility model; and be not used in restriction the utility model; every within spiritual principles of the present utility model; done any amendment, equivalent replacement, improvement etc.; all should be included within protection domain of the present utility model, the protection domain that protection domain of the present utility model should define with claim is as the criterion.

Claims (10)

1. a power station maintenance collecting well drainage control system, it is characterized in that: comprise switch board, collecting well drain control unit is provided with in described switch board, and the pump motor group, collecting well fluid level switch, the collecting well fluid level sensor that are connected with described control device respectively;
Wherein said collecting well drain control unit comprises PLC, and the operation display panel be connected with described PLC respectively, warning device, pump motor group starting-up later time, pump motor group control loop, controls power transmission road and relay control device in electric power loop, power transfer device, switching power unit, On-off signal unit, switch amount output unit, analog input unit, analog output unit, communication module and passive null contact switch amount;
Described collecting well drain control unit is connected with full factory monitoring system by power transmission road, analog output module and communication module in hard contact switch amount; Described pump motor group is provided with two deep-well pump motors, a work drive motor and a motor for subsequent use;
Described collecting well is connected with the hydraulic turbine by water pipeline.
2. power station maintenance collecting well drainage control system according to claim 1, it is characterized in that: described collecting well fluid level switch is float type level switch, described float type level switch has three pairs of output contacts, and described output contact is respectively working barrel priming level, stand by pump starts and alarm water level, termination of pumping water level.
3. power station maintenance collecting well drainage control system according to claim 1, is characterized in that: described pump motor group starting-up later time number and pump motor number match; Described motor main circuit by inlet wire lightning protection device, motor main circuit line breaker, motor contactor, soft initiator and thermal protection for motors relay, main circuit power voltage indicating instrument, motor switch, in sequential seriesly to form.
4. power station maintenance collecting well drainage control system according to claim 3, is characterized in that: described motor main circuit line breaker has thermal and magnetic dropout short-circuit protection.
5. power station maintenance collecting well drainage control system according to claim 1, is characterized in that: also comprise temperature and humidity controller, lighting device and warning device; Described lighting device and being arranged in the cabinet of described collecting well drain control unit.
6. power station maintenance collecting well drainage control system according to claim 1, is characterized in that: described operation display panel is liquid crystal touch screen; Described display floater comprises alarm window, button, changeover switch.
7. power station maintenance collecting well drainage control system according to claim 5, it is characterized in that: described warning device at least comprises warning circuit and indicator lamp, wherein said indicator lamp comprises water pump operation status indicator lamp, fault of water pump indicator lamp, controls power failure lamp, PLC malfunction indicator lamp.
8. power station according to claim 1 maintenance collecting well drainage control system, is characterized in that: the height of described switch board appearance and size, wide, be thickly respectively 2260 mm, 800 m, 600mm; The power line of described switch board and control signal wire all press inlet wire and lower outlet is arranged.
9. power station maintenance collecting well drainage control system according to claim 1, is characterized in that: described control electric power loop adopts two ac power supply, and described operation display panel is provided with switch dual power knob.
10. power station maintenance collecting well drainage control system according to claim 1, is characterized in that: described communication module is MODBUS protocol module or PROFIBUS protocol module.
CN201520129879.XU 2015-03-07 2015-03-07 Power station maintenance collecting well drainage control system Active CN204570911U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520129879.XU CN204570911U (en) 2015-03-07 2015-03-07 Power station maintenance collecting well drainage control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520129879.XU CN204570911U (en) 2015-03-07 2015-03-07 Power station maintenance collecting well drainage control system

Publications (1)

Publication Number Publication Date
CN204570911U true CN204570911U (en) 2015-08-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520129879.XU Active CN204570911U (en) 2015-03-07 2015-03-07 Power station maintenance collecting well drainage control system

Country Status (1)

Country Link
CN (1) CN204570911U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697350A (en) * 2016-01-28 2016-06-22 西安长庆科技工程有限责任公司 Control method for oil delivery pumps of crude oil transfer device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697350A (en) * 2016-01-28 2016-06-22 西安长庆科技工程有限责任公司 Control method for oil delivery pumps of crude oil transfer device
CN105697350B (en) * 2016-01-28 2017-12-12 西安长庆科技工程有限责任公司 A kind of crude oil switches through the control method of device oil transfer pump

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