CN101685678B - Vibration monitoring system of reactor and reactor internals - Google Patents
Vibration monitoring system of reactor and reactor internals Download PDFInfo
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Abstract
The invention provides a vibration monitoring system of a reactor and reactor internals, solving the problems of reliability, compatibility, stability and maintenance convenience and comprising an accelerometer, a charge amplifier, signal conditioning equipment, vibration signal analyzing equipment, a display terminal, vibration monitor software and the like. In the signal conditioning equipment,a signal conditioning module carries out programmable amplification and low-pass filter on vibration signals, and a multi-channel selection module receives control signals of a self-check control module of the vibration signal analyzing equipment so as to realize system programmable self check; the vibration signal analyzing equipment comprises a PXI bus crate; the vibration monitor software calculates vibration characteristic frequency and amplitude of each channel as well as a CPSD value, a coherence value and a phase value of each channel pair and monitors vibration acceleration and amplitude of a pressure vessel of the reactor, a first order modal frequency and amplitude and a second order modal frequency and amplitude of a reactor fuel assembly, frequency and amplitude of a core barrel beam mode and a second order shell mode as well as swinging frequency and amplitude of the pressure vessel, and the like.
Description
Technical field
The present invention relates to a kind of nuclear power plant reactor monitoring system, specifically a kind of in-pile component vibration monitor system of reactor.
Background technology
International standard and country's nuclear industry standard (like IEC 61502-1999 and EJ_T1188-2005) regulation need be carried out periodic monitoring to the reactor and the in-pile component vibration of nuclear power station.
Domestic other unit does not still have the report of exploitation nuclear power plant reactor and in-pile component vibration monitor system and related patent U.S. Patent No. technology; The vibration monitor system of active service nuclear power station equipment is all from external import; Be unkitted like the Qinshan Phase II NPP first phase; Qinshan Phase II NPP second phase, Daya Gulf and mountain range Australia nuclear power are French 01dB-Stell's, and gulf, field nuclear power is Muscovite.
France 01dB-Stell company has represented the level of present domestic nuclear power station change system to the KIR vibration monitor system of China's Qinshan second phase nuclear power station, Daya Bay nuclear power plant and the nuclear power station supply of material of mountain range Australia.Pass through to that nuclear power station on-the-spot exchanges, examination, for nuclear power station provides the mode of malfunction monitoring technical training and technical scope, fullyed understand the state of the art and the applicable cases of KIR vibration monitor system, shortcoming that this system mainly exists and problem to be solved are following:
Through our understanding and user's reflection, the shortcoming of main existence and problem to be solved are following:
(1) the vibration noise analysis interchannel that requires to be analyzed has strict net synchronization capability; This KIR vibration monitor system has adopted traditional traffic pilot to adopt the mode that combines with the binary channels number; Carry out collection analysis through two passages of each selection, analysis finishes to switch in addition again and carries out collection analysis on two passages, (the one-shot measurement process needs several hours) not only consuming time; If internal reaction stack operation operating mode fluctuateed in several hours, can cause vibration survey result's inconsistency;
(2) lack the original signal waveform Presentation Function, can not the intuitive judgment image data whether correct, whether system's enlargement factor setting is appropriate;
(3) lack from spectrum and cross-spectrum manual analyzing function, can not analyze the new spectral line that occurs in the spectrogram;
(4) will monitor frequency band and solidify, and lack the function that is provided with of monitoring frequency band, after feature band drifted about, deviation can appear in monitoring result and actual vibration situation;
(5) raw data is not preserved, monitor abnormal signal when maybe needing to carry out secondary analysis, need join data acquisition equipment and analytical equipment in addition signal;
(6) monitoring result has only the paper material of printing, is not easy to monitor the management and the arrangement of historical data.
Summary of the invention
The object of the present invention is to provide the in-pile component vibration monitor system of the reactor of a kind of reliability, compatibility, long-term working stability and servicing ease.
Realize the technical scheme of the object of the invention: a kind of in-pile component vibration monitor system of reactor; Comprise signal condition equipment, analysis of vibration signal and data acquisition equipment and display; Described signal condition equipment comprises power module, multichannel distribution module and AV signal condition module, and power module is each module for power supply of signal condition equipment; The multichannel distribution module will be divided into 4 tunnel outputs from 1 road self-test signal of D/A module, deliver to the input end of each passage of AV signal condition module respectively; Be input to the input end of each passage of AV signal condition module from the vibration acceleration signal of charge converter, the modular system default conditions are monitoring state, and after module received the self check order from system, multichannel was selected module input and self-test signal connection; After AV signal condition module is carried out program control amplification and LPF to input signal, deliver to the A/D module of analysis of vibration signal and monitoring equipment; Described analysis of vibration signal and data acquisition equipment; Comprise that PCI expansion bus cabinet, the module in the cabinet towards instrument system comprise embedded controller, 3 A/D modules; Wherein 2 A/D synchronous acquisition modules are to 4 road vibration acceleration signals and the sampling of 8 tunnel neutronic noise signal Synchronization, and wherein 1 A/D acquisition module is gathered 8 road neutron level signals; Be provided with vibration monitoring software in the embedded controller.
A kind of in-pile component vibration monitor system of reactor that utilizes carries out the vibration monitoring method, may further comprise the steps:
(1) behind the system initialization, recovers the software and hardware running parameter of monitoring last time, start monitoring in real time automatically;
(2) monitoring is in real time carried out synchronized sampling, time-histories waveform and signal amplitude analysis and virtual instrument demonstration to each passage;
(3), select to carry out autopower spectral density analysis, cross-spectral density analysis or vibration monitoring according to user's needs;
(4) during autopower spectral density is analyzed; Each channel signal is carried out synchronous acquisition, accomplish autopower spectral density analysis, the normalized auto-power spectral density analysis of NB neutronic noise and NH neutronic noise passage to the vibration acceleration passage; Analysis result shows with spectrogram and tables of data form; The vibration performance frequency and the vibration performance peak amplitude of analysis result involving vibrations acceleration passage, NB passage and NH passage, each passage autopower spectral density analysis or normalized auto-power spectral density are all done repeatedly smoothing processing in analyzing; Analyze automatically and accomplish, perhaps manually check analysis;
(5) during cross-spectral density is analyzed; Each channel signal is carried out synchronous acquisition; Completion to the vibration acceleration passage to, NB passage to, NH passage to, vibration acceleration passage and the interchannel passage of NB to, vibration acceleration passage and the interchannel passage of NH to NH passage and right cross-spectral density, the relevant and phase analysis of the interchannel passage of NB; Analysis result shows with spectrogram and tables of data form; Analysis result comprise each passage to the vibration performance frequency under cross-spectral density value, coherent value and phase difference value, during each passage autopower spectral density is analyzed or normalized auto-power spectral density analyzes, all do repeatedly smoothing processing; Analyze automatically and accomplish, perhaps manually check analysis;
(6) in the vibration monitoring; Each channel signal is carried out synchronous acquisition; The full-automatic autopower spectral density analysis of accomplishing the vibration acceleration passage; Normalized auto-power spectral density analysis to NB neutronic noise and NH neutronic noise passage; Analysis result shows that with spectrogram and tables of data form analysis result comprises vibration acceleration value and amplitude, reactor fuel assemblies single order and second-order modal frequency and amplitude, hanging basket beam form attitude and second order shell model frequency and amplitude and the pressure vessel hunting frequency and the amplitude of each vibration pickup point of reactor pressure vessel; Raw data of gathering and monitoring result data automatic recording generate the monitoring report that comprises spectrogram, vibration monitoring result data table and monitoring state information, monitoring reporting printing or unloading automatically in database;
(7) when reactor reaches 100% power and stable operation first; Set up each passage autopower spectral density baseline spectrum, passage to a cross-spectral density baseline spectrum, relevant and phase reference spectrum, set up vibration acceleration value and amplitude reference value, reactor fuel assemblies single order and second-order modal frequency and amplitude reference value, hanging basket beam form attitude and second order shell model frequency and amplitude reference value, pressure vessel hunting frequency and the amplitude reference value of each vibration pickup point of reactor pressure vessel.
Effect of the present invention: be directed against the defective of the KIR vibration monitor system existence of domestic nuclear power station active service, emphasis of the present invention has solved following problem:
(1) standardization and modular design have been adopted based on the PXI bus; System overhaul and part replacement have been made things convenient for; Making each number adopt intermodule and each number, to adopt each interchannel of module synchronous fully; Realized only need once just can accomplishing the synchronous acquisition of all channel datas; Not only make system be able to simplify (having cancelled demultplexer), Measuring Time shortens (foreshortening in 30 minutes by original several hours) greatly simultaneously, and can eliminate the influence of reactor operation fluctuation of operating conditions to the vibration survey result fully;
(2) monitoring of software has increased the original signal waveform Presentation Function, but whether the intuitive judgment image data is correct, whether system's enlargement factor setting is appropriate;
(3) monitoring of software has increased spectrum and cross-spectrum manual analyzing function certainly, but the correctness of the automatic analysis result of verification also can be analyzed the new spectral line that occurs in the spectrogram;
(4) monitoring of software has increased the monitoring frequency band function has been set, after feature band drifts about, only need monitor frequency band be set to consistent with present case, the situation that just can avoid monitoring result and actual vibration situation not to be inconsistent;
(5) monitoring of software has increased original data storage, and open interface is provided, and can carry out secondary analysis easily;
(6) monitoring of software has adopted virtual instrument technique, database management technology, monitoring to report automatic generation technique; Make software interface attractive in appearance; Visual strong; Monitoring result characteristic quantity management of information database provides open interface for the vibration trend analysis, and monitoring finishes, and can generate monitoring report electronic document (containing literal and chart) automatically.Table 1 is seen in the detailed contrast of the present invention and background technology.
Table 1
Description of drawings
Fig. 1 is the structural drawing of the in-pile component vibration monitor system of reactor of the present invention;
Fig. 2 is the system diagram of the in-pile component vibration monitor system of reactor of the present invention;
Fig. 3 is the process flow diagram of vibration monitoring software.
Embodiment
Vibration monitor system is made up of 4 road acceleration signal passages, 8 road out-pile neutronic noise signalling channels, 8 road neutron level signal passages.
(1) monitoring system reactor building equipment
Monitoring system reactor building equipment is made up of reactor building primary instrument and plant equipment.
The primary instrument that every cover monitoring system is arranged in the reactor building is changeed 10-32 connector, 4 prolongation flexible cables, 4 charge converter, 4 signal output cables etc. and is formed by 4 accelerometers, 4 hard cables, 4 TNC.
Primary instrument in the reactor building purchases all that Denmark B&K company is that produce, instrument that satisfy the pressure vessel vibration monitoring, that be adapted to the nuclear power plant reactor power house environment.
Self design such as accelerometer adapted seat, RIC barrier shield penetration piece pipe adapter, compartment, the machine material adopts the 316L stainless steel, satisfies the primary instrument installation requirement, the requirement of simultaneous adaptation nuclear power plant reactor power house environment.
(2) monitoring system regulator cubicle
The monitoring system regulator cubicle adopts 1 19 " standard cabinet.Door and outer panel before and after rack is established.The Qianmen is a transparent doors, and front and back Men Jun locks, and the front and back door sealing adopts the sealing joint strip sealing.Outer panel adopts the screw mounting means.Air outlet opening is opened on top, rack back door, and the fan of 1 band filtrator is installed, and fresh air inlet is opened in the Door of communication apparatus cabinet bottom, the mounting filtering device.Fan power supply 220V 50HzAC/40W.
4 hanger is installed on four angles of enclosure top.
The rack top board is detachable, and top board is latter half of opens a circular port, and 4 road acceleration signal cables of rack, 8 tunnel neutronic noise signal cables, 8 road neutron level signal cables, 1 road power cable and ground connection copper cable get into rack through circular port.
Open 4 12 * 60 lower margin connecting hole on the cabinet base, the rack bottom adds a cover plate.
(3) regulator cubicle equipment layout
1. cabinet temperature measuring equipment
Establish 1 temperature point in each rack, the machines in-cabinet temperature.Each rack upper front plate is established a digital thermometer head.
2. charge converter power supply adaptor
The charge converter power supply adaptor is that 1U is high, 19 " cabinet is that 4 charge converter provide power supply, outputs to the signal condition equipment cabinets after the signal of self charge converter amplifies in the future simultaneously.
3. signal condition equipment
Signal condition equipment cabinets height is 6U, and the module in the cabinet is made up of 1 power module, 1 multichannel distribution module, 1 AV signal condition module.The function of power module is to be each module for power supply of signal condition equipment.The multichannel distribution module will be divided into 8 tunnel outputs from 1 road self-test signal of D/A module, deliver to the input end of the self-test signal of each module respectively.Acceleration signal from charge converter is input to AV signal condition module; At first input signal is carried out electrical isolation; Send into multiplexer circuit again, after module received the self check order from system, multichannel selected module input all to connect with self-test signal.After AV signal condition module is carried out program control amplification, LPF to signal, deliver to the A/D module of divided oscillation signal desorption device.
4. divided oscillation signal desorption device
The divided oscillation signal desorption device carries out periodic analysis and monitoring to pressure vessel and in-pile component vibration, is the PXI bus cabinet of a NI company, and the module in the cabinet is made up of the embedded controller of 1 NI, the A/D module of 3 NI.
2 NI PXI-6143 synchronous acquisition modules are to 4 road acceleration signals and the sampling of 8 tunnel neutronic noise signal Synchronization.NI PXI-6220 gathers 8 road neutron level signals, has not only guaranteed the interchannel synchronism of acquired signal, and has shortened the vibration monitoring time greatly.
5. display and printer
Model is that the display of YT-170CS is the display terminal of analysis of vibration signal and monitoring.HP Deskjet D2368 A4 breadth color inkjet printer is used to print the vibration monitoring report.
(4) vibration monitoring software
The vibration monitoring software flow pattern, as shown in Figure 3.
After the startup, login, and judge whether login successful according to the user management database that the user is provided with?
Success gets into system initialization, gets nowhere and then withdraw from;
(1) behind the system initialization, recovers the software and hardware running parameter of monitoring last time, real monitoring when starting automatically.In case of necessity, carry out the hardware parameter setting, be provided with according to algorithm parameter and require to carry out the algorithm parameter setting, to carry out the unit parameter setting according to the hardware parameter configuration requirement respectively according to the current operational factor of unit.
(2) monitoring is in real time carried out synchronized sampling, time-histories waveform and signal amplitude analysis and virtual instrument demonstration to each passage.
(3), can select to carry out APSD analysis, CPSD analysis and vibration monitoring according to user's needs.
(4) during APSD analyzes; Each channel signal is carried out synchronous acquisition; Completion is analyzed the APSD (autopower spectral density) of AC (vibration acceleration) passage; NPSD (normalized auto-power spectral density) to NB and NH (neutronic noise) passage analyzes, and analysis result shows that with spectrogram and tables of data form analysis result comprises the vibration performance frequency and the vibration performance peak amplitude of AC passage, NB passage and NH passage.Each passage APSD (or NPSD) all does repeatedly smoothing processing in analyzing, and analyzes automatically and accomplishes, and also can manually check analysis.
(5) during CPSD analyzes; Each channel signal is carried out synchronous acquisition; Completion is analyzed, NH passage and right CPSD (cross-spectral density), Coherence (being concerned with) and the Phase (phase place) of the interchannel passage of NB, AC passage and the interchannel passage of NH, AC passage and the interchannel passage of NB, NH passage, NB passage the AC passage; Analysis result shows with spectrogram and tables of data form, analysis result comprise each passage to the vibration performance frequency under CPSD value, coherent value and phase difference value.Each passage APSD (or NPSD) all does repeatedly smoothing processing in analyzing, and analyzes automatically and accomplishes, and also can manually check analysis.
(6) in the vibration monitoring; Each channel signal is carried out synchronous acquisition; The full-automatic APSD (autopower spectral density) that accomplishes AC (vibration acceleration) passage analyzes; NPSD (normalized auto-power spectral density) to NB and NH (neutronic noise) passage analyzes; Analysis result shows that with spectrogram and tables of data form analysis result comprises vibration acceleration value and amplitude (displacement), reactor fuel assemblies single order and second-order modal frequency and amplitude, hanging basket beam form attitude and second order shell model frequency and amplitude, pressure vessel hunting frequency and the amplitude of each vibration pickup point of reactor pressure vessel.Raw data of gathering and monitoring result data automatic recording can generate the monitoring report of information such as comprising spectrogram, vibration monitoring result data table and monitoring state automatically in database, the printable or unloading of monitoring report.
(7) when reactor reaches 100% power and stable operation first; Set up each passage APSD (autopower spectral density) baseline spectrum, passage to a CPSD (cross-spectral density) baseline spectrum, Coherence (being concerned with) and Phase (phase place) baseline spectrum, set up vibration acceleration value and amplitude (displacement) reference value, reactor fuel assemblies single order and second-order modal frequency and amplitude reference value, hanging basket beam form attitude and second order shell model frequency and amplitude reference value, pressure vessel hunting frequency and the amplitude reference value of each vibration pickup point of reactor pressure vessel.
The vibration monitoring software design is the version that menu management, main interface and sub-interface display, dialog box are provided with the interface, and vibration monitoring software master menu and pull-down submenu see the following form 2.
Table 2
1. vibration monitoring software interface
Main interface is made up of last table listed modularization menu and sensor installation site, monitoring target configuration figure.
2. the user is provided with dialog box
" user's setting " submenu is reset the user name and password of corresponding authority.
3. subscriber administration interface
" user management " checked user's operational circumstances, comprised user, entry time, post-set time.
4. hardware parameter configuration interface hardware parameter config option card comprises:
1. acceleration signal A/D configuration.Model, channel arrangement, LPF, enlargement factor, conversion coefficient, sampling rate, sampling precision.
2. neutronic noise signal A/D configuration.Model, channel arrangement, LPF, enlargement factor, sampling rate, sampling precision.
3. neutron level signal A/D configuration.Model, channel arrangement, sampling rate, sampling precision.
5. algorithm parameter configuration
" parameter configuration counts " thes contents are as follows:
Sampled data length;
Level and smooth number of times;
The data block number;
The windowing type;
Each mode characteristic frequency reference value of in-pile component etc.
6. unit parameter setting
Theing contents are as follows of " unit parameter setting ":
Nuclear power;
Major loop pressure;
Temperature in;
Outlet temperature;
Fuel recycle state etc.
7. base-line data is set up
Option setting, signal analysis and the displaying contents at " base-line data foundation " interface, as follows:
Option is provided with, and comprises that APSD analysis, vibration monitoring and CPSD analyze.
-acceleration signal and neutronic noise signal are selected;
-acceleration passage (AC passage) APSD (autopower spectral density) analyzes, neutronic noise passage (NH and NB passage) NPSD (normalized auto-power spectral density) analyzes and spectrogram shows;
-each channel C PSD (cross-spectral density), Coherence (being concerned with) and Phase (phase place) analyze with spectrogram and show;
-preserve corresponding APSD (or NPSD) and CPSD by " confirming " button, thus set up each base-line data (when reactor reaches 100% power and stable operation first, setting up).
8. vibrate a month observation interface
" vibration month monitoring " interface analysis core barrel beam form attitude is with the relaxation cases of analytical reactions core pressure vessel holddown spring.The signal analysis and the displaying contents at this interface are following:
-measurement passage: AC1～AC4, NB1～NB4;
-AC1～AC4 channel sample signal and APSD analyze with spectrogram and show;
-NB1～NB4 channel sample signal and NPSD analyze with spectrogram and show;
-core barrel beam form attitude vibration shape peak frequency, RMS amplitude, peak-to-peak amplitude characteristic parameter are analyzed;
-preserve corresponding APSD (or NPSD) spectrogram by " confirming " button, characteristic parameter and the library management of original sampling data file data generate the monitoring report automatically;
-print the monitoring report by " printing ".
9. vibrate the season observation interface
Characteristic frequency peak in " monitoring of vibration season " interface analysis 0～25Hz scope, the signal analysis and the displaying contents at this interface are following:
-measurement passage: AC1～AC4, NB1～NB4, NH1～NH4;
(0～50Hz) analyzes for-AC1～AC4 channel signal waveform and APSD spectrum thereof;
(0～50Hz) analyzes for-NB1～NB4, NH1～NH4 channel signal waveform and NPSD spectrum thereof;
-AC1～AC4 passage 0～25Hz frequency range characteristic vibration shape peak frequency, RMS acceleration, peak-to-peak amplitude;
-NB1～NB4, NH1～NH4 passage 0～25Hz frequency range characteristic vibration shape peak frequency, RMS amplitude, peak-to-peak amplitude;
-preserve corresponding APSD (or NPSD) spectrogram by " confirming " button, characteristic parameter and the library management of original sampling data file data generate the monitoring report automatically;
-print the monitoring report by " printing ".
10. vibrate observation interface half a year
" vibration monitoring half a year " interface multianalysis pressure vessel and in-pile component vibration situation in 0～50Hz scope.The signal analysis and the displaying contents at this interface are following:
-measurement passage: AC1～AC4, NB1～NB4, NH1～NH4;
-each channel signal waveform;
The normalization APSD spectrum of-NB3 and NB2, NB3 and NH3, NB3 and NB4, AC2 and NB4, AC1 and NB2, CPSD spectrum, coherence spectrum, phase spectral analysis and spectrogram show;
-each characteristic vibration shape frequency, RMS amplitude, peak-to-peak amplitude;
-preserve corresponding APSD (or NPSD), CPSD, relevant, phase place spectrogram by " confirming " button, characteristic parameter and the library management of original sampling data file data generate the monitoring report automatically;
-print the monitoring report by " printing ".
11. System self-test interface
Self check is carried out to 4 acceleration passages, 8 neutronic noise passages, 8 neutron level passages and disk storage space in " System self-test " interface.The System self-test at this interface thes contents are as follows:
-adopt channel signal amplitude detection method, judge the normal and fault of each passage;
-when certain passage breaks down, or disk storage space is when not enough, and the state indication panel at this interface is represented the respective channel icon with redness.
(5) system's major function
Reactor and the total function of in-pile component vibration monitor system are the vibration situation of periodic monitoring nuclear reactor and in-pile component.The major function of reactor and in-pile component vibration monitor system is following:
A. the vibration of periodic monitoring pressure vessel, fuel assembly and core barrel;
B. implement pressure vessel swing characteristic frequency and the analysis of Oscillation Amplitude parameter;
C. fuel assembly and core barrel vibration performance frequency and amplitude analysis;
D. analysis report is reported automatic generation and printing, Monitoring Data and result data library management with monitoring.
(6) performance index
The indicators of overall performance of reactor and in-pile component vibration monitor system is seen table 3.
Table 3
Claims (3)
1. the in-pile component vibration monitor system of a reactor comprises signal condition equipment, analysis of vibration signal and data acquisition equipment and display, it is characterized in that:
Described signal condition equipment; Comprise power module, multichannel distribution module and AV signal condition module; Power module is each module for power supply of signal condition equipment; The multichannel distribution module will be divided into 4 tunnel outputs from 1 road self-test signal of D/A module, deliver to the input end of each passage of AV signal condition module respectively; Be input to the input end of each passage of AV signal condition module from the vibration acceleration signal of charge converter; At first input signal is carried out electrical isolation; Send into multichannel again and select module; The system default state is a monitoring state, and after module received the self check order from system, multichannel selected module input and self-test signal to connect; After AV signal condition module is carried out program control amplification and LPF to input signal, deliver to the A/D module of analysis of vibration signal and monitoring equipment;
Described analysis of vibration signal and data acquisition equipment; Comprise that PCI expansion bus cabinet, the module in the cabinet towards instrument system comprise embedded controller, 3 A/D modules; Wherein 2 A/D synchronous acquisition modules are to 4 road vibration acceleration signals and the sampling of 8 tunnel neutronic noise signal Synchronization, and wherein 1 A/D acquisition module is gathered 8 road neutron level signals; Be provided with vibration monitoring software in the embedded controller.
2. one kind is utilized the in-pile component vibration monitor system of reactor as claimed in claim 1 to carry out the vibration monitoring method, may further comprise the steps:
(1) behind the system initialization, recovers the software and hardware running parameter of monitoring last time, start monitoring in real time automatically;
(2) monitoring is in real time carried out synchronized sampling, time-histories waveform and signal amplitude analysis and virtual instrument demonstration to each passage;
(3), select to carry out autopower spectral density analysis, cross-spectral density analysis or vibration monitoring according to user's needs;
(4) during autopower spectral density is analyzed; Each channel signal is carried out synchronous acquisition, accomplish autopower spectral density analysis, the normalized auto-power spectral density analysis of NB neutronic noise and NH neutronic noise passage to the vibration acceleration passage; Analysis result shows with spectrogram and tables of data form; The vibration performance frequency and the vibration performance peak amplitude of analysis result involving vibrations acceleration passage, NB passage and NH passage, each passage autopower spectral density analysis or normalized auto-power spectral density are all done repeatedly smoothing processing in analyzing; Analyze automatically and accomplish, perhaps manually check analysis;
(5) during cross-spectral density is analyzed; Each channel signal is carried out synchronous acquisition; Completion to the vibration acceleration passage to, NB passage to, NH passage to, vibration acceleration passage and the interchannel passage of NB to, vibration acceleration passage and the interchannel passage of NH to NH passage and right cross-spectral density, the relevant and phase analysis of the interchannel passage of NB; Analysis result shows with spectrogram and tables of data form; Analysis result comprise each passage to the vibration performance frequency under cross-spectral density value, coherent value and phase difference value, during each passage autopower spectral density is analyzed or normalized auto-power spectral density analyzes, all do repeatedly smoothing processing; Analyze automatically and accomplish, perhaps manually check analysis;
(6) in the vibration monitoring; Each channel signal is carried out synchronous acquisition; The full-automatic autopower spectral density analysis of accomplishing the vibration acceleration passage; Normalized auto-power spectral density analysis to NB neutronic noise and NH neutronic noise passage; Analysis result shows that with spectrogram and tables of data form analysis result comprises vibration acceleration value and amplitude, reactor fuel assemblies single order and second-order modal frequency and amplitude, hanging basket beam form attitude and second order shell model frequency and amplitude and the pressure vessel hunting frequency and the amplitude of each vibration pickup point of reactor pressure vessel; Raw data of gathering and monitoring result data automatic recording generate the monitoring report that comprises spectrogram, vibration monitoring result data table and monitoring state information, monitoring reporting printing or unloading automatically in database;
(7) when reactor reaches 100% power and stable operation first; Set up each passage autopower spectral density baseline spectrum, passage to a cross-spectral density baseline spectrum, relevant and phase reference spectrum, set up vibration acceleration value and amplitude reference value, reactor fuel assemblies single order and second-order modal frequency and amplitude reference value, hanging basket beam form attitude and second order shell model frequency and amplitude reference value, pressure vessel hunting frequency and the amplitude reference value of each vibration pickup point of reactor pressure vessel.
3. method as claimed in claim 2 is characterized in that: described vibration monitoring comprises a month monitoring, season monitoring and monitoring half a year; Month monitoring analysis core barrel beam form attitude wherein is with the relaxation cases of analytical reactions core pressure vessel holddown spring; Characteristic peak frequently in season monitoring analysis 0～25Hz scope wherein; Monitor multianalysis pressure vessel and the in-pile component vibration situation in 0～50Hz scope half a year.
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