CN202771247U - Multipurpose remote monitoring device for wind and solar hybrid power supply - Google Patents
Multipurpose remote monitoring device for wind and solar hybrid power supply Download PDFInfo
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- CN202771247U CN202771247U CN 201220484744 CN201220484744U CN202771247U CN 202771247 U CN202771247 U CN 202771247U CN 201220484744 CN201220484744 CN 201220484744 CN 201220484744 U CN201220484744 U CN 201220484744U CN 202771247 U CN202771247 U CN 202771247U
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Abstract
The utility model discloses a multipurpose remote monitoring device for the wind and solar hybrid power supply, and belongs to the remote monitoring field. The multipurpose remote monitoring device includes an input unit, a multi-path sensor unit, a monitoring unit, an output unit, a display unit, a communication unit, a wind and solar hybrid power supply control unit and a storage battery unit. The multipurpose remote monitoring device has the excellent controllability, the flexible generality and the complete self-power function, and at the same time realizes the on-line continuous monitoring, supports the remote monitoring and the artificial on-site control monitoring, is low in cost, and is easy to use. Besides, the multipurpose remote monitoring device uses two natural powers, i.e. the wind power and the solar power, so the power supply reliability is improved. The multipurpose remote monitoring device is suitable for occasions which need monitoring, such as household, shopping mall, organ, school, company, factory and the like.
Description
Technical field
The utility model relates to the remote monitoring field, more particularly, discloses a kind of multi-usage remote monitoring device that uses the wind light mutual complementing power supply and can be used for the data acquisitions such as gas, temperature, pressure, flow, water level and water quality.
Background technology
The develop rapidly of network technology and computing machine is changing traditional monitor mode.Information network with the advantage such as simple, efficient, cross-platform has become the information exchange platform of the most generally using.What support this platform is information gathering point and the monitoring point that various watch-dogs form.Present various watch-dog is a lot, but all for a certain purposes.
Chinese patent application number: the patent of invention of the 200910175338.X applying date: 2009-12-08 " a kind of remote monitoring device for water flow ", this device is mainly controlled by main control computer, set up a plurality of terminal cabinets to divide control, by GPRS wireless telecommunications emission transmission discharge information, realize the discharge multiple terminals, remote monitoring, at the terminal cabinet double shield control circuit is set, ultrasonic flow meter, water flow sensor, the computer card socket, voice-control alarm, liquid crystal display, handle keyboard, alternating current-direct current transformation etc., main control computer adopts computer program control, computing, the design of this device mainly is that the water resource flow that disperses has been realized long-distance monitor and control; Chinese patent application number: the patent document of 200880019980.2 applyings date: 2008-06-09 discloses a kind of comprehensive theft security system, and this system designs for safe antitheft; Chinese patent application number: the patent document of 201120244357.6 applyings date: 2011-07-01 discloses a kind of remote monitoring measurer for fire control, and this device has only been considered fault-signal and the alerting signal of fire fighting equipment.
Above watch-dog designs according to specificity, function singleness, and range of application is little.
Increase versatility and the versatility of watch-dog, become problem anxious to be resolved in the prior art.
Summary of the invention
The technical matters that invention will solve
The poor problem of function singleness, versatility for electric network monitoring device existence of the prior art, the utility model provides a kind of multi-usage remote monitoring device for wind light mutual complementing power supply, and it has good controllability, flexibly versatility and complete self-powered function.
Technical scheme
Purpose of the present invention is achieved through the following technical solutions.
The multi-usage remote monitoring device of wind light mutual complementing power supply of the present invention, it comprises input block, multiple sensor unit, monitoring unit, output unit, display unit, communication unit, wind light mutual complementing supply control unit and secondary battery unit, wherein:
The output terminal of described input block is connected with described multiple sensor unit; Input block can be finished the sampling of multiple sensor.
Described multiple sensor unit is connected to form by multiple sensor and signal conditioning circuit, described multiple sensor is connected with the output terminal of input block, described multiple sensor becomes various physical signallings into electric signal, and described signal conditioning circuit links to each other with monitoring unit; Described multiple sensor can connect gas, temperature, pressure, flow, water level, a plurality of sensors such as water quality; Multiple sensor can be finished the parameter detecting of a plurality of sensors.
Described monitoring unit is the Surveillance center of system, it comprises flush bonding processor, its processes the information of the display unit that obtains from multiple sensor unit, communication unit, output unit and by output unit, again input block, multiple sensor unit, output unit, communication unit and display unit is monitored; Described flush bonding processor can carry out elementary intelligent scheduling to the parameter that described signal conditioning circuit transmission comes, and finishes the control of valve and the management of water-quality test equipment.
The input termination monitoring unit of described output unit, described output unit is multichannel output, be provided with several output ports, one of them output port connects display unit, and other output port can connect load, and described output unit also has a load information test side, it returns the load information that detects to monitoring unit, monitoring unit not only can be monitored load, can also control load, controls such as ON/OFF.The described output unit of input termination of described display unit, display unit shows parameter and the information of output unit.
Described communication unit comprises that having signal receives the wireless communication module of sending out function, and communication unit connects an output terminal of monitoring unit, and described communication unit carries out data interaction by wireless network and receiving terminal.
Described wind light mutual complementing supply control unit is the control module of Systems by Natural Energy Power Supplying, and it comprises wind/light complementation controller; The input end of described wind/light complementation controller give a dinner for a visitor from afar respectively power generator and photovoltaic cell, output terminal connects respectively multiple sensor unit, monitoring unit, communication unit and display unit, described wind light mutual complementing supply control unit also comprises charging control end and control of discharge end, described charging control end is connected with the input end of secondary battery unit, described control of discharge end is connected with the output terminal of secondary battery unit, and described wind light mutual complementing supply control unit is controlled discharging and recharging of secondary battery unit.
Monitoring unit is the Surveillance center of system, it except with the wind light mutual complementing supply control unit only be the power supply relation, there is monitoring other unit of it and system, the control relation, therefore it and other unit of system two-way connections all, it is the monitoring information of each unit of input system, and according to the system control program of setting each road information is carried out overall treatment, and then each unit of system monitored and control, Fig. 1 as seen, monitoring unit has the multiline message input, except having directly from the multiple sensor unit, communication unit, the information of output unit, the information of the input block that also has the information of the display unit that obtains by output unit and obtain by the multiple sensor unit, monitoring unit is instead pass by again it to input block after according to the system control program of setting its each road information that directly or indirectly obtains being carried out overall treatment, the multiple sensor unit, output unit, communication unit reaches and by output unit display unit is monitored.
Preferably, it also comprises directly manually control module, and the output terminal of described directly manual control module is connected with described monitoring unit.Directly manually control module can be keyboard, touch-screen etc., and operating personnel can send the manual command signal, the direct control monitoring unit from directly manual control module.
Preferably, described communication unit comprises wireless communication module and the interface circuit that adopts the GPRS/3G communication pattern.Use the GPRS/3G communication module and consist of a reception terminal, carry out data interaction by wireless network and telemanagement department.
Beneficial effect
Than prior art, the invention has the advantages that:
One the utlity model has good controllability.This monitoring unit comprises flush bonding processor, and flush bonding processor can carry out elementary intelligent scheduling to the parameter that the signal conditioning circuit transmission comes, and is strong as the monitoring unit control function at system monitoring center, so system has good controllability;
Its two, the utlity model has flexibly versatility.Multiple sensor of the present utility model unit can connect a plurality of sensors such as gas, temperature, pressure, flow, water level and water quality, gather the data parameters of required detection, versatility is better, can be used for the occasions such as hydrologic monitoring, municipal monitoring, electric power monitoring and industry monitoring; Can realize simultaneously the on-line continuous monitoring, also support remote monitoring and artificial field control monitoring, cost is lower, and is easy to use;
Its three, the utlity model has complete self-powered function.Many monitoring stations are away from electrical network, and monitoring equipment needs power supply, therefore need to select the natural energy resources power supply, the wind light mutual complementing power supply is an autonomous power supply system, owing to having used wind energy and two kinds of natural energies of sun power, therefore improved power supply reliability, the utility model is applicable to all kinds of occasions that need monitoring such as family, market, office, school, company, factory.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the multi-usage remote monitoring device of wind light mutual complementing power supply;
Fig. 2 adds directly the manually schematic block circuit diagram of the multi-usage remote monitoring device of the wind light mutual complementing of control power supply;
Fig. 3 is the structural representation of the remote monitoring device of embodiment 1;
Fig. 4 is the watch-dog inner structure schematic diagram in the multi-usage remote monitoring device of the used wind light mutual complementing power supply of embodiment 1;
Fig. 5 is that a plurality of drainage pumping plant remote monitoring points of embodiment 2 transmit the Urban Drainage Pumping Stations remote supervision system that monitor data and monitor message form by radio communication and pumping plant administrative office;
Fig. 6 is the multi-usage remote monitoring device of embodiment 3 usefulness wind light mutual complementings power supply and the schematic diagram that each monitoring instrument forms the Online monitoring of pollution sources system.
Among the figure: 1, input block; 2, multiple sensor unit; 3, monitoring unit; 4, output unit; 5, display unit; 6, communication unit; 7, wind light mutual complementing supply control unit; 8, secondary battery unit; 9, directly manual control module; 10, door; 11, casing; 12, wind light mutual complementing power-supply controller; 13, watch-dog; 14, accumulator; 15, energy I/O interface line bank; 16, signal I/O interface line bank; 17, display screen; 18, manual operation keyboard/touch-screen; 19, turbidity transducer; 20, sample reserving tube; 21, pipe network water sample entrance; 22, solenoid valve; 23, sample spliter; 24, pipe network water sample escape hole; 25, selector valve; 26, liquid level sensor; 27, GPRS/3G wireless communication module; 28, flush bonding processor; 29, memory cell; 30, display module; 31, sensor signal conditioning unit; 32, valve control and valve location detecting unit; 33, touch-screen/keyboard input block; 34, power supply and power supply supervision unit; 35, other communication ports are reserved the unit.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the utility model is described in detail.
The present embodiment is the hydrologic monitoring system that adopts the multi-usage remote monitoring device of wind light mutual complementing power supply, requirement is monitored the water yield, water level and the water quality of underground water, surface water, helps Bureau of Water Resources to grasp one's respective area situation of water resource, water resource operating position with rational management and effectively control.
The present embodiment is comprised of a plurality of monitoring stations.Each monitoring station uses the multi-usage remote monitoring device of cover wind light mutual complementing power supply of the present utility model.Each monitoring station selects different measuring equipments supporting with it according to the difference of task.The hydrographic survey equipment that the present embodiment is selected has: water meter, flowmeter, water-level gauge, rain gage, water quality analyser etc.Because the technical solution of the utility model is multiduty, can use according to on-the-spot needs.For example: the water user selects the monitoring point water meter etc. to be measuring equipment; It is measuring equipment that flowmeter, water-level gauge etc. are then selected in the river monitoring point; Monitoring point, water treatment plant selection water quality analyser etc. is measuring equipment.These measuring equipments all can be used in conjunction with the multi-usage remote monitoring device of wind light mutual complementing power supply.
Fig. 1 is the multi-usage remote monitoring device schematic internal view of the wind light mutual complementing power supply of monitoring point, water treatment plant, and it comprises input block 1, multiple sensor unit 2, monitoring unit 3, output unit 4, display unit 5, communication unit 6, wind light mutual complementing supply control unit 7 and secondary battery unit 8.Multiple sensor unit 2 is connected to form by multiple sensor 2-1 and signal conditioning circuit 2-2, described multiple sensor 2-1 is connected with the output terminal of input block 1, described signal conditioning circuit 2-2 links to each other with monitoring unit 3, monitoring unit 3 comprises flush bonding processor 28, the input termination monitoring unit 3 of output unit 4, output unit 4 is provided with several output ports for multichannel output, one of them output port connects display unit 5, and other output port can connect load; Communication unit 6 adopts wireless communication module and the interface circuit of GPRS/3G communication pattern, and communication unit 6 connects an output terminal of monitoring unit 3, and wind light mutual complementing supply control unit 7 comprises wind/light complementation controller; The input end of described wind/light complementation controller give a dinner for a visitor from afar respectively power generator and photovoltaic cell, output terminal connects respectively multiple sensor unit 2, monitoring unit 3, communication unit 6 and display unit 5, described wind light mutual complementing supply control unit 7 also comprises charging control end and control of discharge end, described charging control end is connected with the input end of secondary battery unit 8, described control of discharge end is connected with the output terminal of secondary battery unit 8, and wind light mutual complementing supply control unit 7 is controlled discharging and recharging of secondary battery units 8.
Such as Fig. 2, the multi-usage remote monitoring device of the complementary power supply of the airduct of the present embodiment can also comprise directly manually control module 9, and directly manually the output terminal of control module 9 is connected with monitoring unit 3.
Such as Fig. 3, particularly, input block 1 in the present embodiment comprises sample reserving tube 20, turbidity transducer 19, pipe network water sample entrance 21, connect solenoid valve 22, sample spliter 23, pipe network water sample escape hole 24 connects stock layout selector valve 25, signal I interface line bank in the signal I/O interface line bank 16, valve control and valve location detecting unit 32.
Wind light mutual complementing supply control unit 7 comprises wind light mutual complementing power-supply controller 12, energy I/O interface line bank 15 and power supply and power supply supervision unit 34.
Directly manually control module 9 adopts manual operation keyboard/touch-screen 18 and touch-screen/keyboard input block 33.
Such as Fig. 3, remote monitoring device in the present embodiment also comprises a casing 11 with door 10 that is used for integrated monitoring equipment, the interior integrated wind light mutual complementing power-supply controller 12 of casing 11, watch-dog 13, accumulator 14, energy I/O interface line bank 15, signal I/O interface line bank 16, display screen 17, manual operation keyboard/touch-screen 18, sample reserving tube 20 and turbidity transducer 19, other sensors place respectively in each sample reserving tube 20 (sees Fig. 3, Fig. 3 only draws 1 sample reserving tube 20), described sample reserving tube 20 is arranged on the intracavity bottom of casing 11, and pipe network water sample entrance 21 connects solenoid valve 22 and sample spliter 23 by pipeline, and sample reserving tube 20 is stretched in the top of the pipeline of sample spliter 23, pipe network water sample escape hole 24 connects stock layout selector valve 25, and sample reserving tube 20 bottoms are stretched into by pipeline in the upper end of stock layout selector valve 25.When gathering water sample, open successively stock layout selector valve 25, solenoid valve 22, carry out system and clean.After cleaning is finished, close stock layout selector valve 25 and begin sample reserving tube 20 is filled sample, be full of when liquid level sensor 26 detects sample, then shut electromagnetic valve 22, and watch-dog 13 begins to gather each sensor signal to be processed, and finishes data transmission.
Watch-dog 13 internal circuit block diagrams comprise embedded monitoring module and GPRS/3G wireless communication module 27 as shown in Figure 4.The embedded monitoring module comprises flush bonding processor 28, memory cell 29, display module 30, each sensor signal conditioning unit 31, valve control and valve location detecting unit 32, touch-screen/keyboard input block 33, power supply and power supply supervision unit 34, other communication ports are reserved unit 35.This memory cell 29, display module 30, each sensor signal conditioning unit 31, valve control and valve location detecting unit 32, touch-screen/keyboard input block 33, power supply and power supply supervision unit 34, other communication ports are reserved unit 35 and are connected with flush bonding processor 28 circuit respectively.
The principle of work of monitoring equipment 13 is: system is divided into automatic operational mode, on-the-spot artificial mode and remote management mode.Be defaulted as automatic operational mode, can enter on-the-spot artificial mode and remote management mode at the scene or under the operated from a distance.
System is under automatic operational mode, flush bonding processor 28 is pressed the ductwork water quality parameter electric signal of setting-up time timing acquiring sensor signal conditioning unit 31 inputs, judge for the first time, under the abnormal conditions that do not have the water quality important parameter to transfinite, the storage data timing starts GPRS/3G wireless communication module 27 and communicates with management center computer system.When water quality occurs unusual, system can sample repeatedly and examine, after determining unusually, start GPRS/3G wireless communication module 27 and communicate with management center computer system, and in time inform the related personnel by GPRS/3G wireless communication module 27 transmission mobile phone short messages.The operator on duty not only can be by remote monitoring simultaneously, and in real time control gathers any water quality parameter, can also carry out system to water quality detection equipment and clean and maintenance work.Native system detects electric power thus supplied by power supply and power supply supervision unit 34, and power supply is normal, and system just can start.Closed-loop control is adopted in pipe network water sample inlet valve control, puts in place to guarantee precise control, and watch-dog 13 can be attempted again action, with the control inefficacy that prevents that random operation from slipping up and bringing detecting valve event when not in place.In addition, watch-dog 13 also has self-checking function, has problem initiatively to report to administrative center, so that managerial personnel in time safeguard.The correlation parameter of watch-dog 13 inside can be programmed according to field condition, have good maintainability and upgradability, other communication ports reservation unit 35 can make system not communicate by letter by GPRS/3G wireless communication module 27 at some special occasions simultaneously, and reserve in unit 35 one or several by other communication ports: such as the RJ-45 network interface, external CAN bus interface, 4-20ma simulates mouth, the RS-232 serial line interface is communicated by letter with the RS-485 serial interface mode, has greatly improved the application region of device.
The present embodiment can be incorporated the water resource information management system into as a monitoring point, as one of them subsystem.Water sector can be controlled this area water resources situation in real time by the water resource information management system, and rational management uses water resource.The user also can inquire about at network the data such as the water yield, water quality, equipment state, power supply state.
The present embodiment is that a plurality of drainage pumping plants in certain city are carried out Design of remote monitoring system, requires the remote supervision system of each drainage pumping plant to transmit monitor data and monitor message to pumping plant administrative office by radio communication, as shown in Figure 5.The multi-usage remote monitoring device of requirement employing wind light mutual complementing power supply and measurement equipment etc. form the drainage pumping plant long distance control system; Require supervisory system can in pumping plant, monitor harmful gas concentration in each cesspool water level, outbound traffic, the pond and monitor the duty etc. of unwatering pump; Support manually control, the automatically start and stop of control, Long-distance Control exhaust blower and unwatering pump.
The drainage pumping plant long distance control system that the present embodiment adopts the multi-usage remote monitoring device of wind light mutual complementing power supply to form, its schematic internal view and Fig. 3 are close, difference is that Fig. 3 monitors water level and water turbidity, and the present embodiment will be monitored cesspool liquid level, blowdown flow, harmful gas concentration, so on Fig. 3 basis, turbidity transducer is made into flow sensor, and the adding gas sensor, because device has gas passage, so easy for installation.
The drainage pumping plant long distance control system of the present embodiment is installed in the drainage pumping plant, monitoring cesspool liquid level; The monitoring blowdown flow; Start and stop state, control model, voltage, electric current, the guard mode of monitoring pump; Monitor security alarm, patrol and examine; The monitoring harmful gas concentration.Held water pump startup equipment is manually controlled, the automatically start and stop of control, Long-distance Control unwatering pump, supports long-range switching controls pattern.The on-the-spot duty of measuring and controlling equipment, operating voltage, electric current, the demonstration cesspool water level of every water pump of demonstration of showing.On-the-spot keyboard reads, revises, arranges the running parameter of detection and control terminal.Regularly store on-site supervision information, in order to inquiry.Liquid level alarm, pump working state variation, the current/voltage alarm active reporting such as transfinite that transfinites.Support the running parameter of long-range setting, modification terminal, realize Remote client equipment.
The present embodiment is communicated by letter with pumping plant administrative office with the GPRS wireless network by the wireless communication module in the device.
The present embodiment adopts the multi-usage remote monitoring device of wind light mutual complementing power supply to form environmental monitoring system " Online monitoring of pollution sources system ".Require to adopt wireless network to realize multiple online environment monitorings such as the automatic monitoring of flue gas and air quality monitorings; System takes the principle of total amount management, overall control, supports the environmental supervision of environmental administration and the regulatory requirement of environmental monitoring work, forms the information platform of environment monitoring and environmental warning.
It is the monitoring terminal equipment of monitoring point that the present embodiment adopts the multi-usage remote monitoring device of wind light mutual complementing power supply, and forms the Online monitoring of pollution sources point with various monitoring instruments such as flue gas monitoring instrument, monitoring smoke dust instrument, air quality monitor device etc.A plurality of Online monitoring of pollution sources points form the Online monitoring of pollution sources system.Adopt the GPRS communication mode between monitoring point and the Surveillance center, as shown in Figure 6.
The systemic-function of the present embodiment has: realize Online monitoring of pollution sources; Monitor the information such as operation conditions, Pollutant emission concentration, discharge capacity of each sewage draining exit equipment, and pollutant emission is dynamic, and diversified warning and warning function are provided.The numerical value that exceeds standard is accurately described.When the on-line monitoring instrument broke down, system can send failure alarm signal automatically.
System's characteristics of the present embodiment are to adopt GPRS Wireless Data Transmission mode as the monitoring point, with Online monitoring of pollution sources system made wireless network, grasp timely and accurately the practical operation situation of enterprise pollution thing floss hole.Support the measuring instrument of any type, as long as in system, arrange accordingly and can automatically identify any meter type, enlarged monitoring kind and the range of application of system, contain the multiple application of on-line monitoring.
Claims (3)
1. the multi-usage remote monitoring device of wind light mutual complementing power supply, it is characterized in that: it comprises input block (1), multiple sensor unit (2), monitoring unit (3), output unit (4), display unit (5), communication unit (6), wind light mutual complementing supply control unit (7) and secondary battery unit (8), wherein:
The output terminal of described input block (1) is connected with described multiple sensor unit (2);
Described multiple sensor unit (2) is connected to form by multiple sensor (2-1) and signal conditioning circuit (2-2), described multiple sensor (2-1) is connected with the output terminal of input block (1), and described signal conditioning circuit (2-2) links to each other with monitoring unit (3);
Described monitoring unit (3) is the Surveillance center of system, it comprises flush bonding processor, its processes the information of the display unit (5) that obtains from multiple sensor unit (2), communication unit (6), output unit (4) and by output unit (4), again input block (1), multiple sensor unit (2), output unit (4), communication unit (6) and display unit (5) is monitored;
The input termination monitoring unit (3) of described output unit (4), described output unit (4) is multichannel output, be provided with several output ports, one of them output port connects display unit (5), other output port can connect load, described output unit (4) also has a load information test side, and it returns the load information that detects to monitoring unit (3);
Described communication unit (6) comprises that having signal receives the wireless communication module of sending out function, and communication unit (6) connects an output terminal of monitoring unit (3), and described communication unit (6) carries out data interaction by wireless network and receiving terminal;
Described wind light mutual complementing supply control unit (7) comprises wind/light complementation controller; The input end of described wind/light complementation controller give a dinner for a visitor from afar respectively power generator and photovoltaic cell, output terminal connects respectively multiple sensor unit (2), monitoring unit (3), communication unit (6) and display unit (5), described wind light mutual complementing supply control unit (7) also comprises charging control end and control of discharge end, described charging control end is connected with the input end of secondary battery unit (8), described control of discharge end is connected with the output terminal of secondary battery unit (8), and described wind light mutual complementing supply control unit (7) is controlled discharging and recharging of secondary battery unit (8).
2. the multi-usage remote monitoring device of wind light mutual complementing according to claim 1 power supply, it is characterized in that: it also comprises directly manually control module (9), described directly manually the output terminal of control module (9) be connected with described monitoring unit (3).
3. the multi-usage remote monitoring device of wind light mutual complementing according to claim 1 and 2 power supply, it is characterized in that: described communication unit (6) comprises wireless communication module and the interface circuit that adopts the GPRS/3G communication pattern.
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| CN 201220484744 CN202771247U (en) | 2012-09-21 | 2012-09-21 | Multipurpose remote monitoring device for wind and solar hybrid power supply |
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| CN 201220484744 CN202771247U (en) | 2012-09-21 | 2012-09-21 | Multipurpose remote monitoring device for wind and solar hybrid power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968466A (en) * | 2017-12-27 | 2018-04-27 | 济南热力集团有限公司 | A kind of multi-functional wall power supply unit |
| CN109343585A (en) * | 2018-11-13 | 2019-02-15 | 中广核核电运营有限公司 | Nuclear power station catch pit liquid level controlling method, device and fluid level controller |
-
2012
- 2012-09-21 CN CN 201220484744 patent/CN202771247U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968466A (en) * | 2017-12-27 | 2018-04-27 | 济南热力集团有限公司 | A kind of multi-functional wall power supply unit |
| CN109343585A (en) * | 2018-11-13 | 2019-02-15 | 中广核核电运营有限公司 | Nuclear power station catch pit liquid level controlling method, device and fluid level controller |
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