CN106653113A - Device and method for carrying out online monitoring on fatigue life of steam generator - Google Patents
Device and method for carrying out online monitoring on fatigue life of steam generator Download PDFInfo
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- CN106653113A CN106653113A CN201610934638.1A CN201610934638A CN106653113A CN 106653113 A CN106653113 A CN 106653113A CN 201610934638 A CN201610934638 A CN 201610934638A CN 106653113 A CN106653113 A CN 106653113A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to the technical field of nuclear power fatigue life monitoring, and in particular discloses a device and a method for carrying out online monitoring on the fatigue life of a steam generator. The monitoring device comprises a fatigue monitoring point temperature measuring device and a fatigue monitoring point pressure testing device which are respectively connected with a server and transmit temperature data of a metal wall surface and fluid as well as primary lateral pressure and secondary lateral pressure of the steam generator to the server, and the server is used for processing the data and displaying monitoring results; a fatigue monitoring point stress processing module connected with the server converts the temperature and pressure parameters, which are measured at a monitoring point, into monitoring point stress calculation results by using a stress calculation function, and transmits same to a monitoring point fatigue life online analysis module connected with the fatigue monitoring point stress processing module for converting the results into a cumulative fatigue damage coefficient. The device and the method have the advantages of being high in accuracy and high in efficiency, realizing online evaluation, and the like.
Description
Technical field
The invention belongs to nuclear power fatigue life monitoring technical field, and in particular to a kind of steam generator online fatigue life
Monitoring device and method.
Background technology
Steam generator is equipment important in nuclear power plant nuclear island, is nuclear power plant's primary Ioops and the important pressure side of secondary circuit
Boundary, and fatigue is the key factor for affecting boiler pressure boundary integrity, steam generator how is held in real time crucial
Pressure-containing member Fatigue Damage States are most important, accumulation of fatigue damage coefficient be weigh Fatigue Damage States important indicator, mesh
Front nuclear power plant adopts offline mode to the accumulation of fatigue damage factor evaluation of steam generator fatigue sensitive spot, evaluates time-consuming,
And because the difference between design transient and actual transient state causes evaluation result strictly according to the facts to reflect the actual fatigue of steam generator
Faulted condition, evaluation result is overly conservative, it is difficult to continues for the aging management of steam generator and licensing and provides accurate data, leads to
Crossing the online fatigue monitoring device of steam generator can effectively obtain steam generator actual operation parameters, and to actual fatigue damage
Coefficient makes accurate assessment.
Existing steam generator Fatigue Life Assessment mode, although steam generator concern position accumulation can be obtained tired
Labor Damage coefficient, but its input data is from two parts, and one is design transient data, and the data can obtain larger steam and send out
The accumulation of fatigue damage coefficient of each part of life device, guards allowance excessive；An other item data need to lead to from nuclear power plant's information system
Cross manual mode and obtain the data related to steam generator fatigue life, evaluation section is obtained by finite element numerical analysis technology
The stress distribution of position, and according to code requirement, steam generator accumulation of fatigue damage coefficient results are obtained, wherein utilizing
When manual methods obtain steam generator related data, because data volume is huge, according to actual acquired data, and divide with reference to numerical value
Analysis technology calculating steam generator stress distribution is simultaneously unrealistic, envelope processing need to be carried out to real data, so as to cause
Evaluation result is overly conservative, and Data Analysis Services and using numerical analysis techniques calculate steam generator stress state when need
Devote a tremendous amount of time, it is inefficient.Meanwhile, can not be obtained accurately using the existing Pyrological data acquisition condition of nuclear power plant
Steam generator fatigue sensitive part actual temperature data, so as to affect the calculating essence of steam generator accumulation of fatigue damage coefficient
Degree.
The content of the invention
It is an object of the invention to provide a kind of online fatigue life monitor of steam generator and method, solve existing
Steam generator fatigue life guards the problems such as allowance is big, and process takes, precision is not high.
Technical scheme is as follows：A kind of online fatigue life monitor of steam generator, the monitoring device bag
Include fatigue monitoring point temperature measuring equipment, fatigue monitoring and press force test device, fatigue monitoring point stress processing module and prison
Measuring point fatigue life on-line analysis module, wherein, fatigue monitoring point temperature measuring equipment and fatigue monitoring press force test device
It is connected with server respectively, and the monitoring of fatigue monitoring point temperature measuring equipment is obtained into steam generator fatigue monitoring point metal
Wall and fluid temperature data, and fatigue monitoring presses the primary side of steam generator pressure and secondary of force test device measurement
Lateral pressure is transmitted to server, and is processed in the server, shown monitoring result；The fatigue monitoring point being connected with server should
Power processing module presses the temperature and pressure of force test device measurement using fatigue monitoring point temperature measuring equipment and fatigue monitoring
Parameter, using Stress calculation function monitoring point stress calculating results are converted to, and are transmitted to fatigue monitoring point stress and processed mould
The monitoring point fatigue life on-line analysis module that block is connected, and using monitoring point fatigue life on-line analysis module by monitoring point
Stress data is converted to accumulation of fatigue damage coefficient, and shows each monitoring point fatigue longevity of the steam generator in arbitrary cycle of operation
Life.
Described fatigue monitoring point temperature measuring equipment is included in steam generator fatigue sensitive part and arranges 12 temperature altogether
Degree meter, for measuring metal wall surface temperature；And import and export at ozzle, steam (vapor) outlet ozzle and feedwater ozzle in steam generator
4 thermometers of arrangement, for carrying out fluid temperature (F.T.) measurement；Using the metal of said temperature measurement amount steam generator privileged site
Wall and fluid temperature (F.T.).
Described fatigue monitoring point stress processing module includes that tube sheet stress processing module, primary side import and export ozzle stress
Processing module, feedwater ozzle stress processing module, steam (vapor) outlet ozzle stress processing module and barrel stress processing module, on
State each stress processing module to be capable of achieving to press fatigue monitoring point temperature measuring equipment and fatigue monitoring force measuring device monitoring
The temperature of different monitoring points be converted to corresponding stress parameters with pressure parameter.
Described tube sheet stress processing module is cold using the primary side for formulating the monitoring of fatigue monitoring point temperature measuring equipment
But agent temperature and secondary side saturated-steam temperature and the monitoring point components of stress table of comparisons, and by actual temperature in table of comparisons center line
Property interpolation obtain monitoring point actual stress data, meanwhile, using fatigue monitoring press force test device monitoring a secondary pressure
Scope, formulates the table of comparisons of different pressures and six components of stress in monitoring point, and the stress under the conditions of actual pressure passes through the table of comparisons
Linear interpolation obtain, then obtain always should for tube sheet monitoring point by the components of stress under temperature loading and pressure loading are vector superposed
Force parameter.
Described primary side imports and exports ozzle stress processing module, steam (vapor) outlet ozzle stress processing module and cylinder should
Power processing module can fatigue monitoring point temperature measuring equipment monitoring various location temperature data period discrete after, utilize one
The discrete temperature response of series correspondence time interval carrys out the stress of temperature change；Force test device is pressed to fatigue monitoring
Pressure loading is multiplied by the monitor stress under 1MPa pressure, and with the stress under temperature loading the total of vector superposed acquisition monitoring point is carried out
Stress parameters.
Described feedwater ozzle processing module can be by the feed temperature of fatigue monitoring point temperature measuring equipment and vapor (steam) temperature
Between temperature difference Fourier expansion, be decomposed into mean temperature, linear temperature and nonlinear temperature, and by mean temperature,
Linear temperature and nonlinear temperature are converted to stress caused under corresponding temperature loading；Feedwater ozzle processing module is to fatigue
The pressure loading of monitoring point pressure test device is multiplied by the monitor stress under 1MPa pressure, is sweared with the stress under temperature loading
Amount superposition obtains the total stress parameter of feedwater ozzle monitoring point.
A kind of online fatigue life monitoring method of steam generator, the method specifically includes following steps：
Step 1, the temperature of collection monitoring steam generator fatigue monitoring point and pressure；
Step 1.1, collection obtain the temperature of steam generator fatigue monitoring point；
Step 1.1.1, using the temperature of thermometer measure steam generator metal wall；
Step 1.1.2, using temperature and measurement steam generator fluid temperature (F.T.)；
Step 1.2, collection obtain primary side of steam generator pressure and secondary pressure；
Step 2, using Stress calculation function, the temperature that steam generator fatigue monitoring point is gathered and pressure parameter conversion
For monitoring point stress parameters；
Step 2.1, using multigroup stress function, the temperature that steam generator fatigue monitoring point is gathered and pressure parameter turn
The stress parameters being changed at steam generator tube sheet；
Step 2.2, Green's function is utilized, the temperature and pressure parameter that steam generator fatigue monitoring point is gathered is converted to
Primary side of steam generator imports and exports the stress parameters at ozzle, steam (vapor) outlet ozzle and cylinder；
Step 2.3, using Stress calculation function, the temperature that steam generator fatigue monitoring point is gathered and pressure parameter turn
The stress parameters being changed at steam generator feedwater ozzle；
Step 3, the stress data of monitoring point is converted to accumulation of fatigue damage coefficient, is realized to each monitoring of steam generator
The monitoring of point fatigue life.
Described step 2.1 is specifically included：
Step 2.1.1, formulation primary side coolant temperature and secondary side saturated-steam temperature and the monitoring point components of stress pair
According to table, and linear interpolation obtains monitoring point actual stress data in the table of comparisons by actual temperature；
Step 2.1.2, the secondary pressure scope for utilizing monitoring, formulate different pressures with the components of stress of monitoring point six
The table of comparisons, the stress under the conditions of actual pressure is obtained by the linear interpolation of the table of comparisons；
Step 2.1.3, by the components of stress under temperature loading and pressure loading it is vector superposed obtain tube sheet monitoring point always should
Force parameter.
Described step 2.2 is specifically included：To fatigue monitoring point measurement temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds,
16 seconds ..., 2nSecond cycle carries out discrete, and a series of response summation of the discrete temperature dT of correspondence time interval d τ can determine that
The stress of any one temperature change T (τ), at any one time the stress of t is by formulaBe given, T is temperature in formula
Degree, τ is time variable, and f (τ) is a certain components of stress that unit temperature step causes；The pressure loading of fatigue monitoring point is taken advantage of
With the total stress parameter that the stress under the monitor stress under 1MPa pressure, with temperature loading carries out vector superposed acquisition monitoring point；
Described step 2.3 is specifically included：By the feed temperature of fatigue monitoring point temperature measuring equipment 1 and vapor (steam) temperature it
Between temperature difference Fourier expansion, be decomposed into mean temperature, linear temperature and nonlinear temperature, what mean temperature caused should
Power is the thermal expansion stress that pipe-line system constraint is caused, and calculation expression is σa=K2C2D0Mi(τ)/2I, Mi(τ) it is moment of flexure, I is
The moment of inertia, K2And C2It is stress exponent, it is local buckling stress by temperature transition that linear temperature item is theoretical according to plane strain, is counted
Formula isM in formulaΔT=E α Δ TI/D0, D0For external diameter, Δ T is linear temperature component, and I is
The moment of inertia, E is elastic modelling quantity, and α is thermal coefficient of expansion, and nonlinear temperature item stress presses formula σNL=E α TNLCalculate, E is springform
Amount, α is thermal coefficient of expansion, TNLFor nonlinear temperature item, total stress σ that temperature loading causes=σa+σaxial+σNL, to fatigue prison
The pressure loading of measuring point is multiplied by the monitor stress under 1MPa pressure, and with the stress under temperature loading vector superposed feedwater is carried out
The total stress parameter of ozzle monitoring point；
12 temperature points are arranged altogether in steam generator fatigue sensitive part in described step 1.1.1, using temperature
The metal wall surface temperature of the temperature point is measured in measurement；
Ozzle, secondary side steam (vapor) outlet ozzle and feedwater ozzle are imported and exported in described step 1.1.2 in steam generator
Place's 4 temperature points of arrangement, for carrying out temperature survey to fluid；
Described step 3 is specifically included：Required according to ASME specifications NB3200, the stress data in step 2 is utilized into rain
Stream method is converted to stress intensity circulation width, provides design fatigue curve with reference to NB3200 annex and obtains monitoring point accumulation of fatigue damage
Coefficient, the system can both show actual fatigue damage coefficient, it is possible to according to the form of exponential function to the monitoring point fatigue longevity
Life is made prediction, and realizes the monitoring to each monitoring point of steam generator fatigue life within the different cycles of operation.
The present invention remarkable result be：A kind of online fatigue life monitor of steam generator of the present invention and
Method, by steam generator fatigue monitoring spot temperature and device for pressure measurement, can obtain metal wall and pressure-containing member reality
The temperature and pressure parameter on border, the steam generator tube sheet developed using Stress calculation function table, primary side are imported and exported ozzle, are given
Spout, steam (vapor) outlet ozzle, shell stress process submodule monitoring concern position stress data, are monitored by steam generator
Point fatigue life on-line analysis module obtains the Fatigue Damage States of steam generator under any instant, and the device and method has
In high precision, high efficiency and the advantages of on-line evaluation.
Description of the drawings
Fig. 1 is a kind of online fatigue life monitor structural representation of steam generator of the present invention；
In figure：1st, fatigue monitoring point temperature measuring equipment；2nd, fatigue monitoring presses force measuring device；3rd, server；4th, it is tired
Labor monitoring point stress processing module；5th, tube sheet stress processing module；6th, primary side imports and exports ozzle stress processing module；7th, feed water
Ozzle stress processing module；8th, steam (vapor) outlet ozzle stress processing module；9th, barrel stress processing module；10th, monitoring point fatigue
Life-span on-line analysis module.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to the present invention.
As shown in figure 1, a kind of online fatigue life monitor of steam generator, including fatigue monitoring point temperature survey dress
Put 1, fatigue monitoring and press force test device 2, fatigue monitoring point stress processing module 4 and monitoring point fatigue life on-line analysis
Module 10, wherein, fatigue monitoring point temperature measuring equipment 1 presses force test device 2 and is connected respectively at server 3 with fatigue monitoring
Connect, and fatigue monitoring point temperature measuring equipment 1 is monitored into acquisition steam generator fatigue monitoring point metal wall and fluid temperature (F.T.)
Data, and fatigue monitoring press force test device 2 measurement primary side of steam generator pressure and secondary pressure transmit to
Server 3, and process in server 3, show monitoring result, wherein, fatigue monitoring point temperature measuring equipment 1 is to utilize temperature
The metal wall and fluid temperature (F.T.) of measurement amount steam generator privileged site, in steam generator fatigue sensitive part 12 are arranged altogether
Individual temperature point, for measuring metal wall surface temperature；Ozzle, steam (vapor) outlet ozzle and feedwater ozzle are imported and exported in steam generator
Place's 4 temperature points of arrangement, for carrying out fluid temperature (F.T.) measurement；Fatigue monitoring presses force test device 2 and sends out for measuring steam
Raw lateral pressure of device and secondary pressure；The fatigue monitoring point stress processing module 4 being connected with server 3 is using fatigue prison
Measuring point temperature measuring equipment 1 and fatigue monitoring press the temperature and pressure parameter of the measurement of force test device 2, using Stress calculation letter
Number is converted to monitoring point stress calculating results, and transmits to tired with the monitoring point that fatigue monitoring point stress processing module 4 is connected
Labor life-span on-line analysis module 10, and be converted to monitoring point stress data using monitoring point fatigue life on-line analysis module 10
Accumulation of fatigue damage coefficient, and each monitoring point fatigue life of the steam generator in arbitrary cycle of operation is shown, wherein, fatigue prison
Measuring point stress processing module 4 includes that tube sheet stress processing module 5, primary side imports and exports ozzle stress processing module 6, feedwater ozzle
Stress processing module 7, steam (vapor) outlet ozzle stress processing module 8 and barrel stress processing module 9, wherein, at tube sheet stress
Reason module 5 is steamed using the primary side coolant temperature for formulating the monitoring of fatigue monitoring point temperature measuring equipment 1 with secondary side saturation
Stripping temperature and the monitoring point components of stress table of comparisons, and linear interpolation obtains that monitoring point is actual to answer in the table of comparisons by actual temperature
Force data, meanwhile, a secondary pressure scope of the monitoring of force test device 2 is pressed using fatigue monitoring, different pressures are formulated with prison
The table of comparisons of six components of stress of measuring point, the stress under the conditions of actual pressure is obtained by the linear interpolation of the table of comparisons, then by temperature
The vector superposed total stress parameter for obtaining tube sheet monitoring point of the components of stress under degree load and pressure loading；Primary side inlet/outlet pipe
Mouth stress processing module 6, steam (vapor) outlet ozzle stress processing module 8 and barrel stress processing module 9 are to fatigue monitoring point temperature
Degree measurement apparatus 1 temperature data carry out according to 1 second, 2 seconds, 4 seconds, 8 seconds, the cycle such as 16 seconds it is discrete, by it is a series of correspondence the times
The response summation of the discrete temperature dT of interval d τ can determine that the stress of any one temperature change T (τ), at any one time t
Stress is by formulaBe given, T is temperature in formula, and τ is time variable, and f (τ) is that unit temperature step causes
The a certain components of stress, primary side imports and exports ozzle stress processing module 6, steam (vapor) outlet ozzle stress processing module 8 and cylinder
Stress processing module 9 presses the monitor stress that the pressure loading of force test device 2 is multiplied by under 1MPa pressure to fatigue monitoring, with temperature
Stress under degree load carries out the total stress parameter of vector superposed acquisition monitoring point；Feedwater ozzle stress processing module 7 is by fatigue
Temperature difference Fourier expansion between the feed temperature and vapor (steam) temperature of monitoring point temperature measuring equipment 1, is decomposed into average
Temperature, linear temperature and nonlinear temperature, the stress that mean temperature causes is the thermal expansion stress that pipe-line system constraint is caused, and is counted
Operator expression formula is σa=K2C2D0Mi(τ)/2I, Mi(τ) it is moment of flexure, I is the moment of inertia, K2And C2It is stress exponent, linear temperature item is pressed
Theoretical according to plane strain is local buckling stress by temperature transition, and calculating formula isM in formulaΔT
=E α Δ TI/D0, D0For external diameter, Δ T is linear temperature component, and I is the moment of inertia, and E is elastic modelling quantity, and α is thermal coefficient of expansion, non-
Linear temperature item stress presses formula σNL=E α TNLCalculate, E is elastic modelling quantity, α is thermal coefficient of expansion, TNLFor nonlinear temperature item, temperature
Total stress σ=σ that degree load causesa+σaxial+σNL, feedwater ozzle stress processing module 7 presses force test device to fatigue monitoring
2 pressure loading is multiplied by the monitor stress under 1MPa pressure, and with the stress under temperature loading vector superposed acquisition feed pipe is carried out
The total stress parameter of mouth monitoring point.
A kind of online fatigue life monitoring method of steam generator, the method specifically includes following steps：
Step 1, the temperature of collection monitoring steam generator fatigue monitoring point and pressure；
Step 1.1, collection obtain the temperature of steam generator fatigue monitoring point；
Step 1.1.1, using the temperature of thermometer measure steam generator metal wall；
12 temperature points are arranged altogether in steam generator fatigue sensitive part, using the thermometer measure temperature point
Metal wall surface temperature；
Step 1.1.2, using temperature and measurement steam generator fluid temperature (F.T.)；
Import and export in steam generator and arrange 4 temperature points at ozzle, secondary side steam (vapor) outlet ozzle and feedwater ozzle,
For carrying out temperature survey to fluid；
Step 1.2, collection obtain primary side of steam generator pressure and secondary pressure；
Step 2, using Stress calculation function, the temperature that steam generator fatigue monitoring point is gathered and pressure parameter conversion
For monitoring point stress parameters；
Step 2.1, using multigroup stress function, the temperature that steam generator fatigue monitoring point is gathered and pressure parameter turn
The stress parameters being changed at steam generator tube sheet；
Step 2.1.1, formulation primary side coolant temperature and secondary side saturated-steam temperature and the monitoring point components of stress pair
According to table, and linear interpolation obtains monitoring point actual stress data in the table of comparisons by actual temperature；
Step 2.1.2, the secondary pressure scope for utilizing monitoring, formulate different pressures with the components of stress of monitoring point six
The table of comparisons, the stress under the conditions of actual pressure is obtained by the linear interpolation of the table of comparisons；
Step 2.1.3, by the components of stress under temperature loading and pressure loading it is vector superposed obtain tube sheet monitoring point always should
Force parameter；
Step 2.2, Green's function is utilized, the temperature and pressure parameter that steam generator fatigue monitoring point is gathered is converted to
Primary side of steam generator imports and exports the stress parameters at ozzle, steam (vapor) outlet ozzle and cylinder；
To fatigue monitoring point measurement temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds, 16 seconds ..., 2nSecond cycle carry out from
Dissipate, a series of response summation of the discrete temperature dT of correspondence time interval d τ be can determine that into any one temperature change T (τ)
Stress, at any one time the stress of t is by formulaBe given, T is temperature in formula, τ is time variable, and f (τ) is single
The a certain components of stress that position temperature jump causes；The monitor stress pressure loading of fatigue monitoring point being multiplied by under 1MPa pressure,
With the total stress parameter that the stress under temperature loading carries out vector superposed acquisition monitoring point；
Step 2.3, using Stress calculation function, the temperature that steam generator fatigue monitoring point is gathered and pressure parameter turn
The stress parameters being changed at steam generator feedwater ozzle；
By the temperature difference Fourier space exhibition between the feed temperature and vapor (steam) temperature of fatigue monitoring point temperature measuring equipment 1
Open, be decomposed into mean temperature, linear temperature and nonlinear temperature, the stress that mean temperature causes is the heat that pipe-line system constraint is caused
Swelling stress, calculation expression is σa=K2C2D0Mi(τ)/2I, Mi(τ) it is moment of flexure, I is the moment of inertia, K2And C2It is stress exponent, linearly
It is local buckling stress by temperature transition that temperature term is theoretical according to plane strain, and calculating formula is
M in formulaΔT=E α Δ TI/D0, D0For external diameter, Δ T is linear temperature component, and I is the moment of inertia, and E is elastic modelling quantity, and α is thermal expansion
Coefficient, nonlinear temperature item stress presses formula σNL=E α TNLCalculate, E is elastic modelling quantity, α is thermal coefficient of expansion, TNLIt is warm in nature for non-thread
Degree item, total stress σ that temperature loading causes=σa+σaxial+σNL, the pressure loading of fatigue monitoring point is multiplied by under 1MPa pressure
Stress under monitor stress, with temperature loading carries out the vector superposed total stress parameter for obtaining feedwater ozzle monitoring point；
Step 3, the stress data of monitoring point is converted to accumulation of fatigue damage coefficient, is realized to each monitoring of steam generator
The monitoring of point fatigue life；
Required according to ASME specifications NB3200, the stress data in step 2 is converted to into stress intensity using rain flow way and is followed
Ring width, provides design fatigue curve and obtains monitoring point accumulation of fatigue damage coefficient with reference to NB3200 annex, and the system both can show
Show actual fatigue damage coefficient, it is possible to which the form according to exponential function is made prediction to monitoring point fatigue life, realize to steaming
The monitoring of each monitoring point of vapour generator fatigue life within the different cycles of operation.
Claims (10)
1. the online fatigue life monitor of a kind of steam generator, it is characterised in that：The monitoring device includes fatigue monitoring point
Temperature measuring equipment (1), fatigue monitoring press force test device (2), fatigue monitoring point stress processing module (4) and monitoring point
Fatigue life on-line analysis module (10), wherein, fatigue monitoring point temperature measuring equipment (1) and the test of fatigue monitoring point pressure are filled
Put (2) to be connected with server (3) respectively, and it is tired that fatigue monitoring point temperature measuring equipment (1) monitoring is obtained into steam generator
Labor monitoring point metal wall and fluid temperature data, and fatigue monitoring press force test device (2) measurement steam generator
Lateral pressure and secondary pressure are transmitted to server (3), and are processed in server (3), shown monitoring result；With service
Fatigue monitoring point stress processing module (4) that device (3) is connected is using fatigue monitoring point temperature measuring equipment (1) and fatigue monitoring
The temperature and pressure parameter of force test device (2) measurement is pressed, using Stress calculation function monitoring point Stress calculation knot is converted to
Really, and transmit to monitoring point fatigue life on-line analysis module (10) being connected with fatigue monitoring point stress processing module (4),
And monitoring point stress data is converted to into accumulation of fatigue damage coefficient using monitoring point fatigue life on-line analysis module (10), and
Show the steam generator each monitoring point fatigue life in arbitrary cycle of operation.
2. the online fatigue life monitor of a kind of steam generator according to claim 1, it is characterised in that：Described
Fatigue monitoring point temperature measuring equipment (1) is included in steam generator fatigue sensitive part and arranges 12 thermometers altogether, for surveying
Amount metal wall surface temperature；And import and export 4 temperature of arrangement at ozzle, steam (vapor) outlet ozzle and feedwater ozzle in steam generator
Meter, for carrying out fluid temperature (F.T.) measurement；Using the metal wall and fluid of said temperature measurement amount steam generator privileged site
Temperature.
3. the online fatigue life monitor of a kind of steam generator according to claim 1, it is characterised in that：Described
Fatigue monitoring point stress processing module (4) imports and exports ozzle stress processing module including tube sheet stress processing module (5), primary side
(6), feed water ozzle stress processing module (7), steam (vapor) outlet ozzle stress processing module (8) and barrel stress processing module
(9), above-mentioned each stress processing module is capable of achieving to fatigue monitoring point temperature measuring equipment (1) and the measurement of fatigue monitoring point pressure
The temperature of the different monitoring points of device (2) monitoring is converted to corresponding stress parameters with pressure parameter.
4. the online fatigue life monitor of a kind of steam generator according to claim 3, it is characterised in that：Described
Tube sheet stress processing module (5) is using the primary side coolant temperature for formulating fatigue monitoring point temperature measuring equipment (1) monitoring
With secondary side saturated-steam temperature and the monitoring point components of stress table of comparisons, and linear interpolation is obtained in the table of comparisons by actual temperature
Monitoring point actual stress data is obtained, meanwhile, a secondary pressure scope of force test device (2) monitoring is pressed using fatigue monitoring,
The table of comparisons of different pressures and six components of stress in monitoring point is formulated, the stress under the conditions of actual pressure is linear by the table of comparisons
Interpolation is obtained, then the vector superposed total stress for obtaining tube sheet monitoring point of the components of stress under temperature loading and pressure loading is joined
Number.
5. the online fatigue life monitor of a kind of steam generator according to claim 3, it is characterised in that：Described
Primary side imports and exports ozzle stress processing module (6), steam (vapor) outlet ozzle stress processing module (8) and barrel stress and processes mould
Block (9) can fatigue monitoring point temperature measuring equipment (1) monitoring various location temperature data period discrete after, be using one
The discrete temperature response of row correspondence time interval carrys out the stress of temperature change；Force test device (2) is pressed to fatigue monitoring
Pressure loading be multiplied by monitor stress under 1MPa pressure, carry out vector superposed acquisition monitoring point with the stress under temperature loading
Total stress parameter.
6. the online fatigue life monitor of a kind of steam generator according to claim 3, it is characterised in that：Described
Feedwater ozzle processing module (7) can be by the temperature between the feed temperature of fatigue monitoring point temperature measuring equipment (1) and vapor (steam) temperature
Difference Fourier expansion, is decomposed into mean temperature, linear temperature and nonlinear temperature, and by mean temperature, linear temperature
And nonlinear temperature is converted to stress caused under corresponding temperature loading；Feedwater ozzle processing module (7) is to fatigue monitoring
The monitor stress that the pressure loading of force test device (2) is multiplied by under 1MPa pressure is pressed, is sweared with the stress under temperature loading
Amount superposition obtains the total stress parameter of feedwater ozzle monitoring point.
7. the online fatigue life monitoring method of a kind of steam generator, it is characterised in that：The method specifically includes following steps：
Step 1, the temperature of collection monitoring steam generator fatigue monitoring point and pressure；
Step 1.1, collection obtain the temperature of steam generator fatigue monitoring point；
Step 1.1.1, using the temperature of thermometer measure steam generator metal wall；
Step 1.1.2, using temperature and measurement steam generator fluid temperature (F.T.)；
Step 1.2, collection obtain primary side of steam generator pressure and secondary pressure；
Step 2, using Stress calculation function, the temperature and pressure parameter that steam generator fatigue monitoring point is gathered is converted to prison
Measuring point stress parameters；
Step 2.1, using multigroup stress function, the temperature and pressure parameter that steam generator fatigue monitoring point is gathered is converted to
Stress parameters at steam generator tube sheet；
Step 2.2, Green's function is utilized, the temperature and pressure parameter that steam generator fatigue monitoring point is gathered is converted to steam
Generator primary side imports and exports the stress parameters at ozzle, steam (vapor) outlet ozzle and cylinder；
Step 2.3, using Stress calculation function, the temperature and pressure parameter that steam generator fatigue monitoring point is gathered is converted to
Stress parameters at steam generator feedwater ozzle；
Step 3, the stress data of monitoring point is converted to accumulation of fatigue damage coefficient, is realized tired to each monitoring point of steam generator
The monitoring in labor life-span.
8. the online fatigue life monitoring method of a kind of steam generator according to claim 7, it is characterised in that：Described
Step 2.1 is specifically included：
Step 2.1.1, formulation primary side coolant temperature and secondary side saturated-steam temperature and the monitoring point components of stress table of comparisons,
And linear interpolation obtains monitoring point actual stress data in the table of comparisons by actual temperature；
Step 2.1.2, the secondary pressure scope for utilizing monitoring, formulation different pressures are compareed with the components of stress of monitoring point six
Table, the stress under the conditions of actual pressure is obtained by the linear interpolation of the table of comparisons；
Step 2.1.3, tube sheet monitoring point total stress ginseng is obtained by the components of stress under temperature loading and pressure loading are vector superposed
Number.
9. the online fatigue life monitoring method of a kind of steam generator according to claim 7, it is characterised in that：Described
Step 2.2 is specifically included：To fatigue monitoring point measurement temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds, 16 seconds ..., 2nWeek second
Phase carries out discrete, and a series of response summation of the discrete temperature dT of correspondence time interval d τ can determine that into any one temperature becomes
Change the stress of T (τ), at any one time the stress of t is by formulaBe given, in formula T be temperature, anaplasia when τ is
Amount, f (τ) is a certain components of stress that unit temperature step causes；The pressure loading of fatigue monitoring point is multiplied by under 1MPa pressure
Monitor stress, carry out the total stress parameter of vector superposed acquisition monitoring point with the stress under temperature loading.
10. the online fatigue life monitoring method of a kind of steam generator according to claim 7, it is characterised in that：It is described
The step of 2.3 specifically include：The temperature difference between the feed temperature and vapor (steam) temperature of fatigue monitoring point temperature measuring equipment 1 is used into Fu
In leaf series expansion, be decomposed into mean temperature, linear temperature and nonlinear temperature, the stress that mean temperature causes is pipe-line system
The thermal expansion stress that constraint is caused, calculation expression is σa=K2C2D0Mi(τ)/2I, Mi(τ) it is moment of flexure, I is the moment of inertia, K2And C2
It is stress exponent, it is local buckling stress by temperature transition that linear temperature item is theoretical according to plane strain, and calculating formula is σsxial=
σaxial=MΔTDα/ 2I, M in formulaΔT=E α Δ TI/Dα, D0For external diameter, Δ T is linear temperature component, and I is the moment of inertia, and E is elasticity
Modulus, α is thermal coefficient of expansion, and nonlinear temperature item stress presses formula σNL=E αTNLCalculate, E is elastic modelling quantity, α is thermal expansion system
Number, TNLFor nonlinear temperature item, total stress σ that temperature loading causes=σa+σaxial+σNL, the pressure loading to fatigue monitoring point
Stress under the monitor stress being multiplied by under 1MPa pressure, with temperature loading carries out the total of vector superposed acquisition feedwater ozzle monitoring point
Stress parameters；
12 temperature points are arranged altogether in steam generator fatigue sensitive part in described step 1.1.1, are measured using temperature
Measure the metal wall surface temperature of the temperature point；
Cloth at ozzle, secondary side steam (vapor) outlet ozzle and feedwater ozzle is imported and exported in described step 1.1.2 in steam generator
4 temperature points are put, for carrying out temperature survey to fluid；
Described step 3 is specifically included：Required according to ASME specifications NB3200, the stress data in step 2 is utilized into rain flow way
Stress intensity circulation width is converted to, design fatigue curve is given with reference to NB3200 annex and is obtained monitoring point accumulation of fatigue damage system
Number, the system can both show actual fatigue damage coefficient, it is possible to according to the form of exponential function to monitoring point fatigue life
Make prediction, realize the monitoring to each monitoring point of steam generator fatigue life within the different cycles of operation.
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| CN109979622A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | Nuclear power plant's voltage-stablizer fatigue life monitors assessment system and method on-line |
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