A kind of nuclear power station earthquake monitoring system
Technical field
The utility model relates to a kind of nuclear power station earthquake monitoring system.
Background technology
According to nuclear power station seismic design and qualification requirement, nuclear power station need arrange earthquake monitoring system, is used for Real-Time Monitoring earthquake information, sends earthquake alarm and measures in real time, stores geological data, to check after earthquake and the necessity of nuclear power station shutdown makes evaluation.Meanwhile, nuclear power station earthquake monitoring system collects the power proterties about nuclear power station structure, system and parts, to evaluate the appropriate of the analytical approach for buildings and equipment seismic design and qualification.
At present, the electronic system of domestic nuclear power projects earthquake monitoring system is made up of 7 3-axis acceleration sensors (MZ) and 7 data acquisition logging systems (EN), 2 are had to be also used as seismic switch in electronic system, when any one seismic switch monitors any axial acceleration of more than 0.01g, seismic events recording and sending seismic events alerting signal will be started.All 7 acceleration transducers of seismic events record are by reaching industrial computer by data after register system and showing the time dependent situation of accekeration.The warning message that earthquake monitoring system is reported and submitted to master-control room has: one is that seismic events is reported to the police, and namely acceleration is greater than the warning (seismic events warning) of 0.01g, opens seismic events record; Two is device failure alert, prompting operator KIS system jam.After generation seismic events is reported to the police, operating personnel need to master-control room close on KIS rack place, room confirm seismic signal true and false, determine seismic intensity grade, analyze the associative operation such as earthquake response spectrum, and determine further operation according to analysis result.Owing to failing the maximum acceleration value providing current each Sensor monitoring to arrive in existing scheme, need operator to arrive earthquake monitoring system rack place and confirm, extend the response time of operator.Meanwhile, because existing scheme only has two acceleration transducers to possess seismic switch function, but require not to be inconsistent in the selection of two acceleration transducers and RG1.12166, and be set to the logical process of alternative, cause rate of false alarm and rate of failing to report higher.In addition, in existing scheme, system only provides seismic events to report to the police and device failure alert to master-control room, and can not provide other warning messages in the very first time, warning message is not comprehensive.
After Fukushima, Japan nuclear accident occurs, strengthen the basic Consensus that nuclear power station earthquake protection ability becomes international community, the design of earthquake instrument monitoring system is had higher requirement, for the power station not arranging earthquake automatic shut down system, the person of speeding operations is to the response of earthquake motion, reduce the requirement that misreport of system rate also becomes each unit of operation and supervision unit, therefore, the response time and the reduction rate of false alarm that how to reduce operator are problem demanding prompt solutions.
Utility model content
The technical solution of the utility model is: a kind of nuclear power station earthquake monitoring system, comprise seismic sensor, Digital Strong registering instrument, photoelectricity interconnecting device and time-history analysis instrument rack, it is characterized in that: wherein seismic sensor is made up of the first seismic sensor, the second seismic sensor, the 3rd seismic sensor, the 4th seismic sensor and the 5th seismic sensor, wherein Digital Strong registering instrument is by the first Digital Strong registering instrument, second Digital Strong registering instrument, 3rd Digital Strong registering instrument, 4th Digital Strong registering instrument and the 5th Digital Strong registering instrument composition, first Digital Strong registering instrument comprises the first digital collection unit, first lithium battery and the first power supply adaptor, second Digital Strong registering instrument comprises the second digital collection unit, second lithium battery and second source adapter, 3rd Digital Strong registering instrument comprises the 3rd digital collection unit, 3rd lithium battery and the 3rd power supply adaptor, 4th Digital Strong registering instrument comprises the 4th digital collection unit, 4th lithium battery and the 4th power supply adaptor, 5th Digital Strong registering instrument comprises the 5th digital collection unit, 5th lithium battery and the 5th power supply adaptor, wherein photoelectricity interconnecting device is made up of the first photoelectricity interconnecting device, the second photoelectricity interconnecting device, the 3rd photoelectricity interconnecting device, the 4th photoelectricity interconnecting device and the 5th photoelectricity interconnecting device, first photoelectricity interconnecting device comprises the first Fiber splice tray, second photoelectricity interconnecting device comprises the second Fiber splice tray, 3rd photoelectricity interconnecting device comprises the 3rd Fiber splice tray, 4th photoelectricity interconnecting device comprises the 4th Fiber splice tray, and the 5th photoelectricity interconnecting device comprises the 5th Fiber splice tray, wherein time-history analysis rack comprises alarm indication dish, display, industrial computer, switch, opto-electronic conversion case, printer, ups power, battery pack, fused fiber splice case.
Further, first seismic sensor connects the first data acquisition unit of the first Digital Strong registering instrument by signal cable, first digital collection unit connects the first lithium battery by power lead, first lithium battery connects the first power supply adaptor, first power supply adaptor connects ups power interface by power lead, first data acquisition unit by Fiber connection to the first photoelectric receiving box, the first Fiber splice tray by Fiber connection to fused fiber splice case.
Further, second seismic sensor connects the second data acquisition unit of the second Digital Strong registering instrument by signal cable, second digital collection unit connects the second lithium battery by power lead, second lithium battery connects second source adapter, second source adapter connects ups power interface by power lead, second data acquisition unit by Fiber connection to the second photoelectric receiving box, the second Fiber splice tray by Fiber connection to fused fiber splice case.
Further, 3rd seismic sensor connects the 3rd data acquisition unit of the 3rd Digital Strong registering instrument by signal cable, 3rd digital collection unit connects the 3rd lithium battery by power lead, 3rd lithium battery connects the 3rd power supply adaptor, 3rd power supply adaptor connects ups power interface by power lead, 3rd data acquisition unit by Fiber connection to the 3rd photoelectric receiving box, the 3rd Fiber splice tray by Fiber connection to fused fiber splice case.
Further, 4th seismic sensor connects the 4th data acquisition unit of the 4th Digital Strong registering instrument by signal cable, 4th digital collection unit connects the 4th lithium battery by power lead, 4th lithium battery connects the 4th power supply adaptor, 4th power supply adaptor connects ups power interface by power lead, 4th data acquisition unit by Fiber connection to the 4th photoelectric receiving box, the 4th Fiber splice tray by Fiber connection to fused fiber splice case.
Further, 5th seismic sensor connects the 5th data acquisition unit of the 5th Digital Strong registering instrument by signal cable, 5th digital collection unit connects the 5th lithium battery by power lead, 5th lithium battery connects the 5th power supply adaptor, 5th power supply adaptor connects ups power interface by power lead, 5th data acquisition unit by Fiber connection to the 5th photoelectric receiving box, the 5th Fiber splice tray by Fiber connection to fused fiber splice case.
Further, ups power is connected with battery pack, and battery pack is 6 plumbic acid maintenance-free accumulator compositions connected in series.
Further, alarm indication dish connects time-histories response analysis instrument, can send earthquake alarm signal.
Beneficial effect:
Digital Strong registering instrument of the present utility model is furnished with lithium battery group, when losing external power source, can provide each registering instrument the uninterrupted power supply of minimum 72 hours; Be furnished with ups power in time-history analysis instrument rack and can ensure that equipment is after forfeiture externally fed, minimum halfhour non-stop run.
When there is earthquake trigger event, Digital Strong registering instrument monitoring seismic signal, starts logout and warning.Each Digital Strong registering instrument has independently microprocessor and enough large memory capacity, to meet its function.Digital Strong registering instrument possesses Trigger Function simultaneously, and when a digital STRONG MOTION DATA instrument is triggered, remaining Digital Strong registering instrument should trigger and record simultaneously.To purchase in each Digital Strong registering instrument electric unit simultaneously, under the state of dead electricity, maintain the uninterrupted operation of 72 hours.
The nuclear power station earthquake monitoring system that the utility model provides, when the signal that any seismic sensor on free field or nuclear island basal layer records exceedes the value that it presets, namely earthquake monitoring system starts the seismic response data that all seismic sensors of permanent storage record.Earthquake monitoring system is greater than 30 seconds writing time in advance, and writing time is adjustable within the scope of 10 ~ 90 seconds afterwards.System can store the uninterrupted recording of 25 minutes, and when aftershock exceedes pre-set value, system can start to record seismic response data again automatically.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model;
Composition graphs 1, concrete Reference numeral is as follows:
1-alarm indication dish, 2-display, 3-industrial computer, 4-switch, 5-opto-electronic conversion case, 6-printer, 7-UPS power supply, 8-battery pack, 9-control system of power plant (PLS), 10-NTP server, 11-EDS, 12-fused fiber splice case, 13-UPS power interface, 101-first seismic sensor, 102-first digital collection unit, 103-first lithium battery, 104-first power supply adaptor, 105-first Fiber splice tray, 106-first photoelectric receiving box, 201-second seismic sensor, 202-second digital collection unit, 203-second lithium battery, 204-second source adapter, 205-second Fiber splice tray, 206-second photoelectric receiving box, 301-the 3rd seismic sensor, 302-the 3rd digital collection unit, 303-the 3rd lithium battery, 304-the 3rd power supply adaptor, 305-the 3rd Fiber splice tray, 306-the 3rd photoelectric receiving box, 401-the 4th seismic sensor, 402-the 4th digital collection unit, 403-the 4th lithium battery, 404-the 4th power supply adaptor, 405-the 4th Fiber splice tray, 406-the 4th photoelectric receiving box, 501-the 5th seismic sensor, 502-the 5th digital collection unit, 503-the 5th lithium battery, 504-the 5th power supply adaptor, 505-the 5th Fiber splice tray, 506-the 5th photoelectric receiving box.
Embodiment
Composition graphs 1, principle of the present utility model is as follows:
A kind of nuclear power station earthquake monitoring system, comprise seismic sensor, Digital Strong registering instrument, photoelectricity interconnecting device and time-history analysis instrument rack, it is characterized in that: described seismic sensor is made up of the first seismic sensor 101, second seismic sensor 201, the 3rd seismic sensor 301, the 4th seismic sensor 401 and the 5th seismic sensor 501; Described Digital Strong registering instrument is made up of the first Digital Strong registering instrument, the second Digital Strong registering instrument, the 3rd Digital Strong registering instrument, the 4th Digital Strong registering instrument and the 5th Digital Strong registering instrument; Described photoelectricity interconnecting device is made up of the first photoelectric receiving box 106, second photoelectric receiving box 206, the 3rd photoelectric receiving box 306, the 4th photoelectric receiving box 406 and the 5th photoelectric receiving box 506; Described time-history analysis rack comprises alarm indication dish 1, display 2, industrial computer 3, switch 4, opto-electronic conversion case 5, printer 6, ups power 7, battery pack 8, control system of power plant (PLS) 9, ntp server 10, EDS11, fused fiber splice case 12 and ups power interface 13.
Further, described first Digital Strong registering instrument comprises the first digital collection unit 102, first lithium battery 103 and the first power supply adaptor 104; Described second Digital Strong registering instrument comprises the second digital collection unit 202, second lithium battery 203 and second source adapter 204; Described 3rd Digital Strong registering instrument comprises the 3rd digital collection unit 302, the 3rd lithium battery 303 and the 3rd power supply adaptor 304; Described 4th Digital Strong registering instrument comprises the 4th digital collection unit 402, the 4th lithium battery 403 and the 4th power supply adaptor 404; Described 5th Digital Strong registering instrument comprises the 5th digital collection unit 502, the 5th lithium battery 503 and the 5th power supply adaptor 504.
Further, described first optic fibre switching box comprises the first Fiber splice tray 105 and the first photoelectric receiving box 106; Described second optic fibre switching box comprises the second Fiber splice tray 205 and the second photoelectric receiving box 206; Described 3rd optic fibre switching box comprises the 3rd Fiber splice tray 305 and the 3rd photoelectric receiving box 306; Described 4th optic fibre switching box comprises the 4th Fiber splice tray 405 and the 4th photoelectric receiving box 406; Described 5th optic fibre switching box comprises the 5th Fiber splice tray 505 and the 5th photoelectric receiving box 506.
Further, described first seismic sensors 101 device connects the first data acquisition unit 102 of the first Digital Strong registering instrument by signal cable, first digital collection unit 102 power lead connects the first lithium battery 103, first lithium battery 103 connects the first power supply adaptor 104, first power supply adaptor 104 connects ups power interface 13 by power lead, first data acquisition unit 102 by Fiber connection to the first photoelectric receiving box 106, first Fiber splice tray 105 by Fiber connection to fused fiber splice case 12.
Further, described second seismic sensor 201 connects the second data acquisition unit 202 of the second Digital Strong registering instrument by signal cable, second digital collection unit 202 power lead connects the second lithium battery 203, second lithium battery 203 connects second source adapter 204, second source adapter 204 connects ups power interface 13 by power lead, second data acquisition unit 202 by Fiber connection to the second photoelectric receiving box 206, second Fiber splice tray 205 by Fiber connection to fused fiber splice case 12.
Further, described 3rd seismic sensor 301 connects the 3rd data acquisition unit 302 of the 3rd Digital Strong registering instrument by signal cable, 3rd digital collection unit 302 power lead connects the 3rd lithium battery 303,3rd lithium battery 303 connects the 3rd power supply adaptor 304,3rd power supply adaptor 304 connects ups power interface 13 by power lead, 3rd data acquisition unit 302 by Fiber connection to the 3rd photoelectric receiving box the 306, three Fiber splice tray 305 by Fiber connection to fused fiber splice case 12.
Further, described 4th seismic sensor 401 connects the 4th data acquisition unit 402 of the 4th Digital Strong registering instrument by signal cable, 4th digital collection unit 402 power lead connects the 4th lithium battery 403,4th lithium battery 403 connects the 4th power supply adaptor 404,4th power supply adaptor 404 connects ups power interface 13 by power lead, 4th data acquisition unit 402 by Fiber connection to the 4th photoelectric receiving box the 406, four Fiber splice tray 405 by Fiber connection to fused fiber splice case 12.
Further, described 5th seismic sensor 501 connects the 5th data acquisition unit 502 of the 5th Digital Strong registering instrument by signal cable, 5th digital collection unit 502 power lead connects the 5th lithium battery 503,5th lithium battery 503 connects the 5th power supply adaptor 504,5th power supply adaptor 504 connects ups power interface 13 by power lead, 5th data acquisition unit 502 by Fiber connection to the 5th photoelectric receiving box the 506, five Fiber splice tray 505 by Fiber connection to fused fiber splice case 12.
Further, alarm indication dish 1 connects control system of power plant (PLS) 9, and fused fiber splice case 12 is by Fiber connection opto-electronic conversion case 5, opto-electronic conversion case 5 connects switch 4, switch 4 connects industrial computer 3, and industrial computer 3 connects display 2, and switch 4 connects ntp server 10.
Ups power 7 is connected with battery pack 8, and described battery pack 8 is 6 plumbic acid maintenance-free accumulator compositions connected in series.
Embodiment:
First seismic sensor 101 is arranged on the free field that room number is 000, it is on the nuclear island reserve battery charging equipment room base plate of 12101 that second seismic sensor 201 is arranged on room number, 3rd seismic sensor 301 be arranged on room number be 11300 containment in east side steam generator compartment Dong Qiang on, 4th seismic sensor 401 be arranged on room number be 11500 containment in east side steam generator compartment Nan Qiang on, 5th seismic sensor 501 is arranged on the shielding factory building that room number is 1287, the corresponding digital STRONG MOTION DATA instrument of each seismic sensor, Digital Strong registering instrument is arranged on sensor proximity, adopt wall hanging mounting means, seismic sensor is connected by signal cable with Digital Strong registering instrument.
Three axle seismic sensor signals of each monitoring point of Digital Strong registering instrument Real-time Collection, after A/D conversion, enter registering instrument host CPU, host CPU will calculate data, analyze, store and data upload.When there is earthquake trigger event, seismograph monitoring seismic signal, starts logout and warning.Each registering instrument has independently microprocessor and enough large memory capacity, to meet its function.Digital Strong registering instrument possesses Trigger Function simultaneously, and when a digital STRONG MOTION DATA instrument is triggered, remaining Digital Strong registering instrument should trigger and record simultaneously.To purchase in each Digital Strong registering instrument electric unit simultaneously, under the state of dead electricity, maintain the uninterrupted operation of 72 hours.
Alert data is uploaded to time-history analysis instrument rack by optical fiber solutions by Digital Strong registering instrument, after time-history analysis instrument will be further analyzed alert data, provides response spectrum and the CAV of three axle seismic sensors, finally provides the alerting signal to master-control room.
In earthquake monitoring system, when the signal that any seismic sensor of five seismic sensor mounting points records exceedes the value that it presets, namely earthquake monitoring system starts the seismic response data that all three axle seismic sensors of permanent storage record.Earthquake monitoring system is greater than 30 seconds writing time in advance, and writing time is adjustable within the scope of 10 ~ 90 seconds afterwards.System can store the uninterrupted recording of 25 minutes, and when aftershock exceedes pre-set value, system can start to record seismic response data again automatically.
Time-history analysis instrument rack receives the seismic response time course data from Digital Strong registering instrument and automatically analyzes data, calculates accumulation absolute velocity (CAV) according to the requirement of R.G.1.166, and analytical reactions spectrum etc.
More than show and describe ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.