CN202203095U - Technical water supply control system of hydropower station unit - Google Patents
Technical water supply control system of hydropower station unit Download PDFInfo
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- CN202203095U CN202203095U CN2011202955964U CN201120295596U CN202203095U CN 202203095 U CN202203095 U CN 202203095U CN 2011202955964 U CN2011202955964 U CN 2011202955964U CN 201120295596 U CN201120295596 U CN 201120295596U CN 202203095 U CN202203095 U CN 202203095U
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Abstract
The utility model discloses a technical water supply control system of a hydropower station unit, which comprises a programmable logic controller (CPU), an analog quantity input module, a switching quantity input module, a switching quantity output module, an alarm module, a power supply module, a communication module, a local HMI (human-machine interface) touch screen, a water supply main pipe pressure sensor, a water supply main pipe pressure switch, a remote unit starting command, a remote unit stopping command, a No. 1 control relay, a No. 1 power loop, a No. 1 pump outlet flow switch, a No. 1 technical water supply pump, a No. 2 control relay, a No. 2 power loop, a No. 2 pump outlet flow switch and a No. 2 technical water supply pump. The technical water supply control system of the hydropower station unit utilizes the receiving unit of the programmable logic controller for starting/stopping technical water supply commands, redundancy judgment is performed according to quantity signals of the technical water supply main pipe pressure sensor and the water supply main pipe pressure switch and the acquired signals, the technical water supply pumps are started automatically, and the water pressure and the water amount of the water supply system are maintained, thereby providing a water source for cooling a water turbine generator set of a power station, lubricating a bearing, sealing a large shaft, cooling a transformer and the like.
Description
Technical field
The utility model relates to control technique field, water power plant, is specifically related to a kind of Hydropower Plant technical water supply control system that the Hydropower Plant running is kept watch on and controlled machine set technology feed main pressure and flow of being used for.
Background technique
Hydropower Plant technical water supply control system is used for supplying art feed main's pressure and flow to keep watch on and control to the water power plant; When receiving that the start of long-range unit makes, the priming technique raw water service pump, and whether normal according to the total pipe pressure of technical water supply and pump discharge flow switch judgment technology feed main's pressure and current; Thereby for equipment such as water wheels unit cooling system provide the water source; When receiving long-range compressor emergency shutdown when making, stop the technical water supply pump, guarantee unit safety operation.
Existing Hydropower Plant technical water supply control system, technical water supply pump discharge do not have flow switch and detect, and some does not have technical water supply house steward pressure transmitter yet, directly adopts a distant place manually to control.
For solving above-mentioned deficiency of the prior art, the utility model provides a kind of new solution.
Summary of the invention
The technical problem that the utility model will solve is: the deficiency that is directed to existing technology; A kind of Hydropower Plant technical water supply control system is provided; This Hydropower Plant technical water supply control system is utilized the start order of programmable logic controller (PLC) receiving remote unit, priming technique raw water service pump automatically, and whether normal according to the total pipe pressure of technical water supply and pump discharge flow switch judgment technology feed main's pressure and current; Thereby for equipment such as water wheels unit cooling system provide the water source; When receiving long-range compressor emergency shutdown when making, stop the technical water supply pump, guarantee unit safety operation.
For reaching the foregoing invention purpose; The technological scheme that the utility model adopted is: a kind of Hydropower Plant technical water supply control system is provided, it is characterized in that: comprise that programmable logic controller (PLC) CPU, analog amount load module, switching input module, switching value output module, alarm module, power module, communication module, local HMI touch screen, feed main's pressure transducer, feed main's pressure switch, the start of long-range unit make, long-range compressor emergency shutdown makes, No. 1 control relay, No. 1 power loop, No. 1 pump discharge flow switch, No. 1 technical water supply pump, No. 2 control relays, No. 2 power loops, No. 2 pump discharge flow switches, No. 2 technical water supply pumps; Said analog amount load module, switching input module, switching value output module, power module and communication module are connected with programmable logic controller (PLC) CPU respectively; Said technical water supply house steward pressure transducer is connected with the analog amount load module; Feed main's pressure switch, No. 1 pump discharge flow switch, No. 2 pump discharge flow switches, the starts of long-range unit make, long-range compressor emergency shutdown makes signaling line be connected with switching input module, and No. 1 the technical water supply pump is connected with switching input module respectively with No. 2 technical water supply pumps; Said switching value output module is connected with No. 1 technical water supply pump through No. 1 control relay, No. 1 power loop successively, and the switching value output module is connected with No. 2 technical water supply pumps through No. 2 control relays, No. 2 power loops successively; Said alarm module is connected with the switching value output module; Said local HMI touch screen is connected with communication module, and communication module is connected with long distance control system simultaneously.
Hydropower Plant technical water supply control system according to the utility model provided is characterized in that: said alarm module includes warning light and alarm buzzer.
Hydropower Plant technical water supply control system according to the utility model provided is characterized in that: also include manual control module, said manual control module is connected with No. 2 power loops with No. 1 power loop respectively.
In sum, this practical Hydropower Plant technical water supply control system that provides has following characteristics:
(1) programmable logic controller (PLC) receiving remote unit start order; Automatic priming technique raw water service pump; And whether normal, thereby the water source is provided for equipment such as water wheels unit cooling systems according to the total pipe pressure of technical water supply and pump discharge flow switch judgment technology feed main's pressure and current; When receiving long-range compressor emergency shutdown when making, stop the technical water supply pump.Real-time detection technique feed main pressure; And house steward's pressure switch amount and analog amount redundancy determination; When house steward's pressure transducer just often, judge with analog amount to be controlled to be the master, when house steward's pressure sensor failure; Automatically at this moment the judgement of shielding analog amount is participated in judging with the signal of house steward's pressure switch amount.In leading, when detecting this pump discharge flow switch no signal or feed main's pressure anomaly, drop into subsequent use raw water service pump and warning automatically with the raw water service pump running.
(2) PLC writes down automatically and adds up every the number of starts and working time, and on touch screen, shows record and cumulative data.
Main using of (3) two technical water supply pumps; One subsequent use, according to rotating automatically working time (can set), carrying out active and standby usefulness when rotating; Start the main raw water service pump of using earlier; After the master normally moves 30S with raw water service pump, stop subsequent use raw water service pump, in the process of rotating, just can guarantee that feed main's pressure and current can not interrupt like this.
(4) native system can communicate with distant place control system, with delivering to remote monitoring system on all information.Simultaneously also can with every raw water service pump automatically/operation/fault, subsequent use raw water service pump start, control signal of interests such as power supply disappearance of signal, PLC trouble signal, hypotony and export remote monitoring system to the form of idle contact.
Description of drawings
Fig. 1 is the theory diagram of Hydropower Plant technical water supply control system;
Fig. 2 is the control flow chart of Hydropower Plant technical water supply control system.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to be described in detail:
As shown in Figure 1, this Hydropower Plant technical water supply control system comprises programmable logic controller (PLC) CPU, analog amount load module, switching input module, switching value output module, alarm module, power module, communication module, local HMI touch screen, technical water supply house steward pressure transducer, feed main's pressure switch, No. 1 control relay, No. 1 power loop, No. 1 pump discharge flow switch, No. 1 technical water supply pump, No. 2 control relays, No. 2 power loops, No. 2 pump discharge flow switches, No. 2 technical water supply pumps; Said analog amount load module, switching input module, switching value output module, power module and communication module are connected with programmable logic controller (PLC) CPU respectively; Said technical water supply house steward pressure transducer is connected with the analog amount load module; Feed main's pressure switch, No. 1 pump discharge flow switch, No. 2 pump discharge flow switches, the starts of long-range unit make, long-range compressor emergency shutdown makes signaling line be connected with switching input module, and No. 1 the technical water supply pump is connected with switching input module respectively with No. 2 technical water supply pumps; Said switching value output module is connected with No. 1 technical water supply pump through No. 1 control relay, No. 1 power loop successively, and the switching value output module is connected with No. 2 technical water supply pumps through No. 2 control relays, No. 2 power loops successively; Said alarm module is connected with the switching value output module; Said local HMI touch screen is connected with communication module, and communication module is connected with long distance control system simultaneously.Said alarm module includes warning light and alarm buzzer.Also include manual control module, said manual control module is connected with No. 2 power loops with No. 1 power loop respectively.
The input signal of said programmable logic controller (PLC) comprises state, pump discharge flow switch, technical water supply house steward pressure switch, feed main's pressure transducer of remote control command, two technical water supply pumps; Wherein remote control command comprises that the start of long-range unit make, long-range compressor emergency shutdown makes; Technical water supply pump state comprises control mode and moves and trouble signal for automatic, raw water service pump; The pump discharge flow switch signal is that pump discharge pressure is normal; Feed main's pressure switch signal is that total pipe pressure is normal, and these signals get into the switching input module of programmable logic controller (PLC); Feed main's pressure transducer output 4-20MA signal gets into the analog amount load module of programmable logic controller (PLC), and the switching value output module of programmable logic controller (PLC) connects control relay, restarts the power loop priming technique raw water service pump of technical water supply pump; In technical water supply pump power loop, also added the manually-operable control loop simultaneously, be provided with " startup ", " stopping " control knob, can realize manual control technique raw water service pump, for equipment such as water wheels unit cooling system provide the water source.
This locality is provided with a HMI touch screen in addition and is connected with programmable logic controller (PLC), can be at setting, the demonstration of feed main's pressure, raw water service pump state, the malfunction alarm query function of the enterprising line parameter of HMI touch screen.This system also can carry out communication with remote monitoring system, and the logical agreement of news is supported MODBUS, MPDBUS-Plus, Ethernet PCP/IP etc.
This Hydropower Plant technical water supply control system employing group cabinet is installed; The cabinet size is made as 2260*800*600 (the wide * of high * is dark) mm; Capital equipment comprises in the cabinet: programmable logic controller (PLC), HMI touch screen, starter, relay, button, tutorial light, control mode switch etc.; Wherein programmable logic controller (PLC), starter, relay are installed in the cabinet and install on the base plate, and HMI touch screen, operating button, warning light, control mode switch are installed on the cabinet door operation panel.
Below the operation of native system is described in detail: control mode is divided into manual control and control automatically, comes the setting operation pattern by the control mode switch; The control mode switch is provided with 3 grades: " manually ", " excision ", " automatically ", when control mode during, forbid all operations in " excision " position.
Preoperative armament-related work: (1) control mode switch is put the excision position; The control loop power switch that closes, the operating power tutorial light shows normal, the programmable logic controller (PLC) initialization is accomplished; The programmable logic controller (PLC) run indicator is bright, and display screen picture shows normal.(2) the technical water supply pump power loop main disconnector that closes, the dry pump trouble signal, electrical source of power voltage shows normal.
The manually-operable flow process: (is example with 1# technical water supply pump) places " manually " position with 1# technical water supply pump control mode; Press 1# technical water supply pump " startup " button; Then 1# technical water supply pump is started working; Technical water supply pump operation tutorial light is bright, at this moment can see that the pump discharge pressure signal is normal from touch screen, and feed main's pressure-display is normal.In the time of need stopping, pressing 1# technical water supply pump and " stop " button, then the technical water supply pump stops, and 1# technical water supply pump operation tutorial light goes out.2# technical water supply method for controlling pump and 1# technical water supply pump are just the same.
Automatic operating process: 1# technical water supply pump, 2# technical water supply pump control mode are all put " automatically " position, main usefulness of 2 technical water supply pumps, one is subsequent use, rotates automatically according to the rotation time that configures, as shown in Figure 2.
(1) opens the main technical water supply pump of using: after receiving long-range unit start order; Whether judge mainly has fault with the technical water supply pump, as fault-free then PLC send and open the main technical water supply pump control signal of use, through control relay startup master with technical water supply pump power loop; Start the main technical water supply pump of using; Main simultaneously bright with technical water supply pump operation tutorial light, the pump discharge flow switch shows normal, and feed main's pressure-display is normal.
(2) open subsequent use technical water supply pump: after the startup master is with the technical water supply pump; Main unusual with raw water service pump rate of discharge switch, or during feed main's pressure anomaly, judge whether subsequent use technical water supply pump has fault; As fault-free then PLC send and open subsequent use technical water supply pump control signal; Start subsequent use technical water supply pump power loop through control relay, start subsequent use technical water supply pump, main simultaneously bright with technical water supply pump operation tutorial light; The pump discharge flow switch shows normal, and feed main's pressure-display is normal.
(3) two raw water service pumps are rotated: when the master reaches the rotation time of setting with the technical water supply pump operation time, become stand-by state, another raw water service pump is the main raw water service pump of using; The time master put into operation with raw water service pump; When the uptime reaches 30S, stop subsequent use raw water service pump, accomplish whole process by turns; In the process of rotating, feed main's pressure and flow can not interrupt.
(4) stop the technical water supply pump: when main put into operation with technical water supply pump or subsequent use technical water supply pump after, PLC receives long-range shutdown when making, PLC sends termination of pumping order, stops all raw water service pumps.
In sum, the Hydropower Plant technical water supply control system that the utility model provided is utilized advanced PLC programmable logic controller (PLC) intellectual technology; Receiving remote unit start order, automatic priming technique raw water service pump, and according to total pipe pressure of technical water supply and pump discharge flow switch; Whether judgment technology feed main's pressure and current are normal, thereby for equipment such as water wheels unit cooling system provides the water source, when receiving long-range compressor emergency shutdown when making; Stop the technical water supply pump, guarantee unit safety operation.
The utility model is not limited to above-mentioned instance, in claims institute restricted portion of the utility model, and various distortion that those skilled in the art can make without creative work or revise the protection that all receives this patent.
Claims (3)
1. Hydropower Plant technical water supply control system is characterized in that: comprise that programmable logic controller (PLC) CPU, analog amount load module, switching input module, switching value output module, alarm module, power module, communication module, local HMI touch screen, feed main's pressure transducer, feed main's pressure switch, the start of long-range unit make, long-range compressor emergency shutdown makes, No. 1 control relay, No. 1 power loop, No. 1 pump discharge flow switch, No. 1 technical water supply pump, No. 2 control relays, No. 2 power loops, No. 2 pump discharge flow switches, No. 2 technical water supply pumps; Said analog amount load module, switching input module, switching value output module, power module and communication module are connected with programmable logic controller (PLC) CPU respectively; Said technical water supply house steward pressure transducer is connected with the analog amount load module; Feed main's pressure switch, No. 1 pump discharge flow switch, No. 2 pump discharge flow switches, the starts of long-range unit make, long-range compressor emergency shutdown makes signaling line be connected with switching input module, and No. 1 the technical water supply pump is connected with switching input module respectively with No. 2 technical water supply pumps; Said switching value output module is connected with No. 1 technical water supply pump through No. 1 control relay, No. 1 power loop successively, and the switching value output module is connected with No. 2 technical water supply pumps through No. 2 control relays, No. 2 power loops successively; Said alarm module is connected with the switching value output module; Said local HMI touch screen is connected with communication module, and communication module is connected with long distance control system simultaneously.
2. Hydropower Plant technical water supply control system according to claim 1, it is characterized in that: said alarm module includes warning light and alarm buzzer.
3. Hydropower Plant technical water supply control system according to claim 1 and 2 is characterized in that: also include manual control module, said manual control module is connected with No. 2 power loops with No. 1 power loop respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011202955964U CN202203095U (en) | 2011-08-16 | 2011-08-16 | Technical water supply control system of hydropower station unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202955964U CN202203095U (en) | 2011-08-16 | 2011-08-16 | Technical water supply control system of hydropower station unit |
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| CN202203095U true CN202203095U (en) | 2012-04-25 |
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| CN2011202955964U Expired - Fee Related CN202203095U (en) | 2011-08-16 | 2011-08-16 | Technical water supply control system of hydropower station unit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103047102A (en) * | 2013-01-23 | 2013-04-17 | 邵军 | Pumping system |
| CN104282350A (en) * | 2014-08-05 | 2015-01-14 | 中国核电工程有限公司 | Control method for reducing false alarm of nuclear power station charging pump |
| 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 |
| CN106224223A (en) * | 2016-09-21 | 2016-12-14 | 杭州双业能源设备有限公司 | Tank car method for controlling pump and device |
| CN106527257A (en) * | 2016-10-31 | 2017-03-22 | 大新县科学技术情报研究所（大新县生产力促进中心） | Hydropower station intelligent management system |
| CN106968876A (en) * | 2017-05-19 | 2017-07-21 | 华能澜沧江水电股份有限公司糯扎渡水电厂 | A kind of turbine-generator units technical water supply control method |
| CN111828241A (en) * | 2020-07-09 | 2020-10-27 | 四川华能宝兴河水电有限责任公司 | Early warning system and method for hydropower station unit |
| CN114320864A (en) * | 2021-12-28 | 2022-04-12 | 深圳市英威腾电气股份有限公司 | Water pump control method and related device |
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2011
- 2011-08-16 CN CN2011202955964U patent/CN202203095U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103047102B (en) * | 2013-01-23 | 2016-02-03 | 邵军 | A kind of water-raising system |
| CN103047102A (en) * | 2013-01-23 | 2013-04-17 | 邵军 | Pumping system |
| CN104282350A (en) * | 2014-08-05 | 2015-01-14 | 中国核电工程有限公司 | Control method for reducing false alarm of nuclear power station charging pump |
| CN104282350B (en) * | 2014-08-05 | 2017-01-25 | 中国核电工程有限公司 | Control method for reducing false alarm of nuclear power station charging pump |
| 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 |
| 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 |
| CN106224223B (en) * | 2016-09-21 | 2018-01-26 | 杭州双业能源设备有限公司 | Tank car method for controlling pump and device |
| CN106224223A (en) * | 2016-09-21 | 2016-12-14 | 杭州双业能源设备有限公司 | Tank car method for controlling pump and device |
| CN106527257A (en) * | 2016-10-31 | 2017-03-22 | 大新县科学技术情报研究所（大新县生产力促进中心） | Hydropower station intelligent management system |
| CN106968876A (en) * | 2017-05-19 | 2017-07-21 | 华能澜沧江水电股份有限公司糯扎渡水电厂 | A kind of turbine-generator units technical water supply control method |
| CN106968876B (en) * | 2017-05-19 | 2019-01-04 | 华能澜沧江水电股份有限公司糯扎渡水电厂 | A kind of turbine-generator units technical water supply control method |
| CN111828241A (en) * | 2020-07-09 | 2020-10-27 | 四川华能宝兴河水电有限责任公司 | Early warning system and method for hydropower station unit |
| CN111828241B (en) * | 2020-07-09 | 2022-03-01 | 华能集团技术创新中心有限公司 | Early warning system for hydropower station unit |
| CN114320864A (en) * | 2021-12-28 | 2022-04-12 | 深圳市英威腾电气股份有限公司 | Water pump control method and related device |
| CN114320864B (en) * | 2021-12-28 | 2024-05-07 | 深圳市英威腾电气股份有限公司 | Water pump control method and related device |
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