CN106653113B - A kind of online fatigue life monitor of steam generator and method - Google Patents
A kind of online fatigue life monitor of steam generator and method Download PDFInfo
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- CN106653113B CN106653113B CN201610934638.1A CN201610934638A CN106653113B CN 106653113 B CN106653113 B CN 106653113B CN 201610934638 A CN201610934638 A CN 201610934638A CN 106653113 B CN106653113 B CN 106653113B
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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 present invention relates to nuclear power fatigue life monitoring technical field, a kind of online fatigue life monitor of steam generator and method are specifically disclosed.Fatigue monitoring point temperature measuring equipment and fatigue monitoring press force test device and are connected respectively with server in the monitoring device, and by metal wall surface and fluid temperature data, and primary side of steam generator pressure and secondary pressure are transmitted to server, and handle in the server, show monitoring result；The fatigue monitoring point stress processing module being connected with server utilizes the temperature and pressure parameter that monitoring point measures, monitoring point stress calculating results are converted to using Stress calculation function, and is transmitted to the monitoring point fatigue life on-line analysis module being connected with fatigue monitoring point stress processing module and is converted to accumulation of fatigue damage coefficient.The device and method has many advantages, such as high-precision, high efficiency and on-line evaluation.
Description
Technical field
The invention belongs to nuclear power fatigue life monitoring technical fields, 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 how to hold steam generator key in real time an important factor for influencing boiler pressure boundary integrity
Pressure-containing member Fatigue Damage States are most important, and accumulation of fatigue damage coefficient is the important indicator for weighing Fatigue Damage States, mesh
Preceding nuclear power plant is all made of offline mode to the accumulation of fatigue damage factor evaluation of steam generator fatigue sensitive spot, and evaluation takes,
And since the difference between design transient and practical transient state causes evaluation result that cannot reflect the practical fatigue of steam generator strictly according to the facts
Faulted condition, evaluation result are overly conservative, it is difficult to provide accurate data for steam generator aging management and licensing continuity, lead to
Steam generator actual operation parameters can effectively be obtained by crossing the online fatigue monitoring device of steam generator, and to practical fatigue damage
Coefficient makes accurate assessment.
Existing steam generator Fatigue Life Assessment mode, although it is tired to obtain the accumulation of steam generator concern position
Labor Damage coefficient, but its input data comes from two parts, first, design transient data, which can obtain larger steam hair
The accumulation of fatigue damage coefficient of each component of raw device, it is excessive to guard allowance；An other item data comes from nuclear power plant's information system, need to lead to
Manual mode acquisition and steam generator fatigue life relevant data are crossed, passes through finite element numerical analysis technology and obtains evaluation section
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, since data volume is huge, according to actual acquired data, and numerical value point is combined
Analysis technology calculating steam generator stress distribution is simultaneously unrealistic, envelope processing need to be carried out to real data, to cause
Evaluation result is overly conservative, and Data Analysis Services and using numerical analysis techniques calculate steam generator stress state when need
It devotes a tremendous amount of time, it is inefficient.Meanwhile it can not be obtained accurately using the existing Pyrological data acquisition condition of nuclear power plant
Steam generator fatigue sensitive part actual temperature data, to influence the calculating essence of steam generator accumulation of fatigue damage coefficient
Degree.
Invention content
The purpose of the present invention is to provide a kind of online fatigue life monitor of steam generator and methods, solve existing
Steam generator fatigue life guards the problems such as allowance is big, and process takes, and precision is not high.
Technical scheme is as follows：A kind of online fatigue life monitor of steam generator, the monitoring device packet
Include fatigue monitoring point temperature measuring equipment, fatigue monitoring presses 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 respectively with server, and fatigue monitoring point temperature measuring equipment is monitored and obtains steam generator fatigue monitoring point metal
Wall surface and fluid temperature data and fatigue monitoring press the primary side of steam generator pressure and secondary of force test device measurement
Lateral pressure is transmitted to server, and handles in the server, shows monitoring result；The fatigue monitoring point being connected with server is answered
Power processing module presses the temperature and pressure of force test device measurement using fatigue monitoring point temperature measuring equipment and fatigue monitoring
Parameter is converted to monitoring point stress calculating results using Stress calculation function, and is transmitted to and handles mould with fatigue monitoring point stress
The monitoring point fatigue life on-line analysis module that block is connected, and utilize fatigue life on-line analysis module in monitoring point by monitoring point
Stress data is converted to accumulation of fatigue damage coefficient, and shows each monitoring point of the steam generator in any cycle of operation tired longevity
Life.
The 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 it is imported and exported at ozzle, steam (vapor) outlet ozzle and water supply ozzle in steam generator
4 thermometers are arranged, for carrying out fluid temperature (F.T.) measurement；Utilize the metal of above-mentioned thermometer measure steam generator privileged site
Wall surface and fluid temperature (F.T.).
The fatigue monitoring point stress processing module includes tube sheet stress processing module, primary side inlet and outlet ozzle stress
Processing module, water supply ozzle stress processing module, steam (vapor) outlet ozzle stress processing module and barrel stress processing module, on
Stating each stress processing module can realize that pressing force measuring device to fatigue monitoring point temperature measuring equipment and fatigue monitoring monitors
The temperature of different monitoring points be converted to corresponding stress parameters with pressure parameter.
It is primary that the tube sheet stress processing module utilizes formulated fatigue monitoring point temperature measuring equipment to monitor
Side coolant temperature, secondary side saturated-steam temperature and the monitoring point components of stress table of comparisons, and by actual temperature in the table of comparisons
Middle linear interpolation obtains monitoring point actual stress data, meanwhile, it is pressed one or two times of force test device monitoring using fatigue monitoring
Pressure limit formulates the table of comparisons of different pressures and six components of stress in monitoring point, and it is right that the stress under the conditions of actual pressure passes through
It obtains according to the linear interpolation of table, then by the vector superposed tube sheet monitoring point that obtains of the components of stress under temperature loading and pressure loading
Total stress parameter.
Primary side inlet and outlet ozzle stress processing module, steam (vapor) outlet ozzle stress processing module and the cylinder is answered
After the temperature data period discrete at different location that power processing module monitors fatigue monitoring point temperature measuring equipment, one is utilized
The discrete temperature response of the corresponding time interval of series carrys out the stress of temperature variation；Force test device is pressed to fatigue monitoring
Pressure loading is multiplied by the monitor stress under 1MPa pressure, and the total of vector superposed acquisition monitoring point is carried out with the stress under temperature loading
Stress parameters.
The water supply ozzle processing module can be by the feed temperature and vapor (steam) temperature of fatigue monitoring point temperature measuring equipment
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；Water supply 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 water supply ozzle monitoring point.
A kind of online fatigue life monitoring method of steam generator, this method specifically comprise the following steps：
The temperature and pressure of step 1, acquisition monitoring steam generator fatigue monitoring point；
Step 1.1, acquisition obtain the temperature of steam generator fatigue monitoring point；
Step 1.1.1, the temperature of thermometer measure steam generator metal wall surface is utilized；
Step 1.1.2, using temperature and steam generator fluid temperature (F.T.) is measured；
Step 1.2, acquisition obtain primary side of steam generator pressure and secondary pressure；
Step 2, using Stress calculation function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are converted
For monitoring point stress parameters；
Step 2.1, using multigroup stress function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are turned
The stress parameters being changed at steam generator tube sheet；
Step 2.2, using Green's function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are 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 of steam generator fatigue monitoring point acquisition and pressure parameter are turned
The stress parameters being changed at steam generator water supply ozzle；
The stress data of monitoring point is converted to accumulation of fatigue damage coefficient by step 3, and realization respectively monitors steam generator
The monitoring of point fatigue life.
The step 2.1 specifically includes：
Step 2.1.1, primary side coolant temperature and secondary side saturated-steam temperature and the monitoring point components of stress pair are formulated
According to table, and by actual temperature, linear interpolation obtains monitoring point actual stress data in the table of comparisons；
Step 2.1.2, using a secondary pressure range of monitoring, different pressures and the components of stress of monitoring point six are formulated
The table of comparisons, the linear interpolation that the stress under the conditions of actual pressure passes through the table of comparisons obtain；
Step 2.1.3, temperature loading and the vector superposed tube sheet monitoring point that obtains of the components of stress under pressure loading are always answered
Force parameter.
The step 2.2 specifically includes：To fatigue monitoring point measure temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds,
16 seconds ..., 2nThe progress of period second is discrete, and the response summation of the discrete temperature dT of corresponding time interval d τ a series of can determine
The stress of any one temperature change T (τ), the stress of t is by formula at any one timeIt provides, T is temperature in formula
Degree, τ is time variable, and f (τ) is a certain components of stress caused by unit temperature step；The pressure loading of fatigue monitoring point is multiplied
With the monitor stress under 1MPa pressure, the vector superposed total stress parameter for obtaining monitoring point is carried out with the stress under temperature loading；
The step 2.3 specifically includes：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, answered caused by mean temperature
Power is thermal expansion stress caused by pipe-line system constraint, calculation expression σa=K2C2D0Mi(τ)/2I, Mi(τ) is moment of flexure, and I is
The moment of inertia, K2And C2It is stress exponent, temperature transition is local buckling stress, meter according to plane strain theory by linear temperature item
Formula is σaxial=σaxial=MΔTDo/ 2I, M in formulaΔT=E α Δs TI/Do, D0For outer diameter, Δ T is linear temperature component, and I is used
Property square, E is elasticity modulus, and α is coefficient of thermal expansion, nonlinear temperature item stress press formula σNL=E α TNLIt calculating, E is elasticity modulus,
α is coefficient of thermal expansion, TNLFor nonlinear temperature item, total stress σ=σ caused by temperature loadinga+σaxial+σNL, to fatigue monitoring
The pressure loading of point is multiplied by the monitor stress under 1MPa pressure, and vector superposed acquisition feed pipe is carried out with the stress under temperature loading
The total stress parameter of mouth monitoring point；
12 temperature points are arranged altogether in steam generator fatigue sensitive part in the step 1.1.1, utilize temperature
Meter measures the metal wall surface temperature of the temperature point；
In the step 1.1.2 ozzle, secondary side steam (vapor) outlet ozzle and water supply ozzle are imported and exported in steam generator
Place's 4 temperature points of arrangement, for carrying out temperature measurement to fluid；
The step 3 specifically includes：It is required according to ASME specifications NB3200, the stress data in step 2 is utilized into rain
Stream method is converted to stress intensity cycle width, provides design fatigue curve in conjunction with NB3200 annex and obtains monitoring point accumulation of fatigue damage
Coefficient, the system can both show practical fatigue damage coefficient, and can be according to the form of exponential function to the monitoring point tired 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 remarkable result of the present invention is：A kind of online fatigue life monitor of steam generator of the present invention and
Method can get metal wall surface and pressure-containing member be real by steam generator fatigue monitoring spot temperature and device for pressure measurement
The temperature and pressure parameter on border using the steam generator tube sheet of Stress calculation function table exploitation, primary side inlet and outlet ozzle, are given
Spout, steam (vapor) outlet ozzle, shell stress processing submodule monitor 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 moment, which has
In high precision, high efficiency and the advantages that on-line evaluation.
Description of the drawings
Fig. 1 is a kind of online fatigue life monitor structural schematic diagram of steam generator of the present invention；
In figure：1, fatigue monitoring point temperature measuring equipment；2, fatigue monitoring presses force measuring device；3, server；4, tired
Labor monitoring point stress processing module；5, tube sheet stress processing module；6, primary side imports and exports ozzle stress processing module；7, water supply
Ozzle stress processing module；8, steam (vapor) outlet ozzle stress processing module；9, barrel stress processing module；10, monitoring point fatigue
Service life on-line analysis module.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment invention is further described in detail.
As shown in Figure 1, a kind of online fatigue life monitor of steam generator, including fatigue monitoring point temperature measure dress
It sets 1, fatigue monitoring and presses 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 with fatigue monitoring and is connected respectively at server 3
It connects, and fatigue monitoring point temperature measuring equipment 1 is monitored and obtains steam generator fatigue monitoring point metal wall surface and fluid temperature (F.T.)
Data and fatigue monitoring press the primary side of steam generator pressure of the measurement of force test device 2 and secondary pressure is transmitted to
Server 3, and handled in server 3, show monitoring result, wherein fatigue monitoring point temperature measuring equipment 1 is to utilize temperature
Meter measures the metal wall surface and fluid temperature (F.T.) of steam generator privileged site, and 12 are arranged altogether in steam generator fatigue sensitive part
A temperature point, for measuring metal wall surface temperature；Ozzle, steam (vapor) outlet ozzle and water supply 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 is used for measuring steam hair
Raw lateral pressure of device and secondary pressure；The fatigue monitoring point stress processing module 4 being connected with server 3 is supervised using fatigue
Measuring point temperature measuring equipment 1 and fatigue monitoring press the temperature and pressure parameter of the measurement of force test device 2, utilize Stress calculation letter
Number is converted to monitoring point stress calculating results, and it is tired to be transmitted to the monitoring point being connected with fatigue monitoring point stress processing module 4
Labor service life 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 show each monitoring point fatigue life of the steam generator in any cycle of operation, wherein fatigue prison
Measuring point stress processing module 4 includes tube sheet stress processing module 5, primary side inlet and outlet ozzle stress processing module 6, water supply ozzle
Stress processing module 7, steam (vapor) outlet ozzle stress processing module 8 and barrel stress processing module 9, wherein at tube sheet stress
Module 5 is managed to steam with secondary side saturation using the primary side coolant temperature of formulated fatigue monitoring point temperature measuring equipment 1 monitoring
Stripping temperature and the monitoring point components of stress table of comparisons, and linear interpolation obtains that monitoring point is practical to answer in the table of comparisons by actual temperature
Force data, meanwhile, a secondary pressure range of the monitoring of force test device 2 is pressed using fatigue monitoring, formulates different pressures and prison
The table of comparisons of six components of stress of measuring point, the stress under the conditions of actual pressure are obtained by the linear interpolation of the table of comparisons, then will be warm
Spend load and the vector superposed total stress parameter for obtaining tube sheet monitoring point of the components of stress under 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
Spend measuring device 1 temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds, the periods such as 16 seconds carry out it is discrete, by a series of corresponding times
The response summation of the discrete temperature dT of interval d τ can determine the stress of any one temperature change T (τ), at any one time t
Stress is by formulaIt provides, T is temperature in formula, and τ is time variable, caused by f (τ) is unit temperature step
The a certain components of stress, primary side import and export ozzle stress processing module 6, steam (vapor) outlet ozzle stress processing module 8 and cylinder
The pressure loading that stress processing module 9 presses fatigue monitoring force test device 2 is multiplied by monitor stress under 1MPa pressure, with temperature
Stress under degree load carries out the vector superposed total stress parameter for obtaining monitoring point；Water supply ozzle stress processing module 7 will be tired
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, stress caused by mean temperature are thermal expansion stress caused by pipe-line system constraint, meter
Operator expression formula is σa=K2C2D0Mi(τ)/2I, Mi(τ) is moment of flexure, and I is the moment of inertia, K2And C2It is stress exponent, linear temperature item is pressed
According to plane strain theory by temperature transition be local buckling stress, calculating formula σaxial=σaxial=MΔTDo/ 2I, M in formulaΔT=
EαΔTI/Do, D0For outer diameter, Δ T is linear temperature component, and I is the moment of inertia, and E is elasticity modulus, and α is coefficient of thermal expansion, non-thread
Property temperature term stress press formula σNL=E α TNLIt calculates, E is elasticity modulus, and α is coefficient of thermal expansion, TNLFor nonlinear temperature item, temperature
Total stress σ=σ caused by loada+σaxial+σNL, water supply ozzle stress processing module 7 presses force test device 2 to fatigue monitoring
Pressure loading be multiplied by the monitor stress under 1MPa pressure, carry out vector superposed acquisition water supply ozzle with the stress under temperature loading
The total stress parameter of monitoring point.
A kind of online fatigue life monitoring method of steam generator, this method specifically comprise the following steps：
The temperature and pressure of step 1, acquisition monitoring steam generator fatigue monitoring point；
Step 1.1, acquisition obtain the temperature of steam generator fatigue monitoring point；
Step 1.1.1, the temperature of thermometer measure steam generator metal wall surface is utilized；
12 temperature points are arranged altogether in steam generator fatigue sensitive part, utilize the thermometer measure temperature point
Metal wall surface temperature；
Step 1.1.2, using temperature and steam generator fluid temperature (F.T.) is measured；
It is imported and exported in steam generator and arranges 4 temperature points at ozzle, secondary side steam (vapor) outlet ozzle and water supply ozzle,
For carrying out temperature measurement to fluid；
Step 1.2, acquisition obtain primary side of steam generator pressure and secondary pressure；
Step 2, using Stress calculation function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are converted
For monitoring point stress parameters；
Step 2.1, using multigroup stress function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are turned
The stress parameters being changed at steam generator tube sheet；
Step 2.1.1, primary side coolant temperature and secondary side saturated-steam temperature and the monitoring point components of stress pair are formulated
According to table, and by actual temperature, linear interpolation obtains monitoring point actual stress data in the table of comparisons；
Step 2.1.2, using a secondary pressure range of monitoring, different pressures and the components of stress of monitoring point six are formulated
The table of comparisons, the linear interpolation that the stress under the conditions of actual pressure passes through the table of comparisons obtain；
Step 2.1.3, temperature loading and the vector superposed tube sheet monitoring point that obtains of the components of stress under pressure loading are always answered
Force parameter；
Step 2.2, using Green's function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are 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 measure temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds, 16 seconds ..., 2nSecond period carry out from
It dissipates, the response summation of the discrete temperature dT of corresponding time interval d τ a series of can determine any one temperature change T's (τ)
Stress, the stress of t is by formula at any one timeIt provides, T is temperature in formula, and τ is time variable, and f (τ) is
The a certain components of stress caused by unit temperature step；The monitoring being multiplied by under 1MPa pressure to the pressure loading of fatigue monitoring point is answered
Power carries out the vector superposed total stress parameter for obtaining monitoring point with the stress under temperature loading；
Step 2.3, using Stress calculation function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are turned
The stress parameters being changed at steam generator water supply ozzle；
By the temperature difference Fourier space exhibition between the feed temperature and vapor (steam) temperature of fatigue monitoring point temperature measuring equipment 1
It opens, is decomposed into mean temperature, linear temperature and nonlinear temperature, stress is caused by pipe-line system constrains caused by mean temperature
Thermal expansion stress, calculation expression σa=K2C2D0Mi(τ)/2I, Mi(τ) is moment of flexure, and I is the moment of inertia, K2And C2It is that stress refers to
Temperature transition is local buckling stress, calculating formula σ according to plane strain theory by number, linear temperature itemaxial=σaxial=MΔ TDo/ 2I, M in formulaΔT=E α Δs TI/Do, D0For outer diameter, Δ T is linear temperature component, and I is the moment of inertia, and E is elasticity modulus, and α is
Coefficient of thermal expansion, nonlinear temperature item stress press formula σNL=E α TNLIt calculates, E is elasticity modulus, and α is coefficient of thermal expansion, TNLIt is non-
Linear temperature item, total stress σ=σ caused by temperature loadinga+σaxial+σNL, 1MPa pressures are multiplied by the pressure loading of fatigue monitoring point
Monitor stress under power carries out the total stress parameter of vector superposed acquisition water supply ozzle monitoring point with the stress under temperature loading；
The stress data of monitoring point is converted to accumulation of fatigue damage coefficient by step 3, and realization respectively monitors steam generator
The monitoring of point fatigue life；
It is required according to ASME specifications NB3200, the stress data in step 2 is converted into stress intensity using rain flow way and is followed
Ring width provides design fatigue curve in conjunction with NB3200 annex and obtains monitoring point accumulation of fatigue damage coefficient, which can both show
Show practical fatigue damage coefficient, and can make prediction to monitoring point fatigue life according to the form of exponential function, realizes to steaming
The monitoring of each monitoring point of vapour generator fatigue life within the different cycles of operation.
Claims (8)
1. a kind of online fatigue life monitor 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 fatigue monitoring point pressure test dress
It sets (2) to be respectively connected with server (3), and fatigue monitoring point temperature measuring equipment (1) monitoring acquisition steam generator is tired
Labor monitoring point metal wall surface and fluid temperature data and fatigue monitoring press the steam generator of force test device (2) measurement
Lateral pressure and secondary pressure are transmitted to server (3), and processing, display monitoring result in server (3)；With service
The fatigue monitoring point stress processing module (4) that device (3) is connected utilizes fatigue monitoring point temperature measuring equipment (1) and fatigue monitoring
The temperature and pressure parameter for pressing force test device (2) measurement, monitoring point Stress calculation knot is converted to using Stress calculation function
Fruit, and it is transmitted to the 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 into accumulation of fatigue damage coefficient using monitoring point fatigue life on-line analysis module (10), and
Show steam generator each monitoring point fatigue life in any cycle of operation；The fatigue monitoring point stress processing module
(4) include tube sheet stress processing module (5), primary side inlet and outlet ozzle stress processing module (6), water supply ozzle stress processing mould
Block (7), steam (vapor) outlet ozzle stress processing module (8) and barrel stress processing module (9), above-mentioned each stress processing module
It can be achieved to press the different monitoring points that force measuring device (2) monitors to fatigue monitoring point temperature measuring equipment (1) and fatigue monitoring
Temperature be converted to corresponding stress parameters with pressure parameter；The tube sheet stress processing module (5) utilize formulated it is tired
Primary side coolant temperature, secondary side saturated-steam temperature and the monitoring point that labor monitoring point temperature measuring equipment (1) monitors are answered
The force component table of comparisons, and linear interpolation obtains monitoring point actual stress data in the table of comparisons by actual temperature, meanwhile, it utilizes
Fatigue monitoring presses a secondary pressure range of force test device (2) monitoring, formulates different pressures and the stress of monitoring point six point
The table of comparisons of amount, the stress under the conditions of actual pressure is obtained by the linear interpolation of the table of comparisons, then temperature loading and pressure are carried
The vector superposed total stress parameter for obtaining tube sheet monitoring point of the components of stress under lotus.
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
Measure metal wall surface temperature；And it is imported and exported in steam generator and arranges 4 temperature at ozzle, steam (vapor) outlet ozzle and water supply ozzle
Meter, for carrying out fluid temperature (F.T.) measurement；Utilize the metal wall surface and fluid of above-mentioned thermometer measure 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
Primary side imports and exports ozzle stress processing module (6), steam (vapor) outlet ozzle stress processing module (8) and barrel stress and handles mould
After the temperature data period discrete at different location that block (9) monitors fatigue monitoring point temperature measuring equipment (1), a system is utilized
The discrete temperature response of the corresponding time interval of row carrys out the stress of temperature variation；Force test device (2) is pressed to fatigue monitoring
Pressure loading be multiplied by the monitor stress under 1MPa pressure, carry out vector superposed obtaining monitoring point with the stress under temperature loading
Total stress parameter.
4. the online fatigue life monitor of a kind of steam generator according to claim 1, it is characterised in that：Described
Water supply ozzle processing module (7) can be by the temperature between the feed temperature and vapor (steam) temperature of fatigue monitoring point temperature measuring equipment (1)
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；Water supply ozzle processing module (7) is to fatigue monitoring
The pressure loading for pressing force test device (2) is multiplied by monitor stress under 1MPa pressure, is sweared with the stress under temperature loading
Amount superposition obtains the total stress parameter of water supply ozzle monitoring point.
5. a kind of online fatigue life monitoring method of steam generator, it is characterised in that：This method specifically comprises the following steps：
The temperature and pressure of step 1, acquisition monitoring steam generator fatigue monitoring point；
Step 1.1, acquisition obtain the temperature of steam generator fatigue monitoring point；
Step 1.1.1, the temperature of thermometer measure steam generator metal wall surface is utilized；
Step 1.1.2, thermometer measure steam generator fluid temperature (F.T.) is utilized；
Step 1.2, acquisition obtain primary side of steam generator pressure and secondary pressure；
Step 2, using Stress calculation function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are converted into prison
Measuring point stress parameters；
Step 2.1, using multigroup stress function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are converted to
Stress parameters at steam generator tube sheet；
Step 2.2, using Green's function, the temperature of steam generator fatigue monitoring point acquisition and pressure parameter are converted into 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 of steam generator fatigue monitoring point acquisition and pressure parameter are converted to
Stress parameters at steam generator water supply ozzle；
The stress data of monitoring point is converted to accumulation of fatigue damage coefficient by step 3, is realized tired to each monitoring point of steam generator
The monitoring in labor service life.
6. the online fatigue life monitoring method of a kind of steam generator according to claim 5, it is characterised in that：Described
Step 2.1 specifically includes：
Step 2.1.1, primary side coolant temperature and secondary side saturated-steam temperature and the monitoring point components of stress table of comparisons are formulated,
And linear interpolation obtains monitoring point actual stress data in the table of comparisons by actual temperature；
Step 2.1.2, using a secondary pressure range of monitoring, formulation different pressures are compareed with the components of stress of monitoring point six
Table, the linear interpolation that the stress under the conditions of actual pressure passes through the table of comparisons obtain；
Step 2.1.3, the vector superposed tube sheet monitoring point total stress that obtains of the components of stress under temperature loading and pressure loading is joined
Number.
7. the online fatigue life monitoring method of a kind of steam generator according to claim 5, it is characterised in that：Described
Step 2.2 specifically includes：To fatigue monitoring point measure temperature data according to 1 second, 2 seconds, 4 seconds, 8 seconds, 16 seconds ..., 2nWeek second
Phase progress is discrete, and the response summation of the discrete temperature dT of corresponding time interval d τ a series of can determine that any one temperature becomes
Change the stress of T (τ), the stress of t is by formula at any one timeIt provides, T is temperature in formula, and τ becomes for the time
Amount, f (τ) is a certain components of stress caused by unit temperature step；The pressure loading of fatigue monitoring point is multiplied by under 1MPa pressure
Monitor stress, with the stress under temperature loading carry out it is vector superposed obtain monitoring point total stress parameter.
8. the online fatigue life monitoring method of a kind of steam generator according to claim 5, it is characterised in that：Described
Step 2.3 specifically includes：By the temperature difference between the feed temperature and vapor (steam) temperature of fatigue monitoring point temperature measuring equipment 1 in Fu
Leaf series expansion, is decomposed into mean temperature, linear temperature and nonlinear temperature, stress caused by mean temperature be pipe-line system about
Thermal expansion stress caused by beam, calculation expression σa=K2C2D0Mi(τ)/2I, Mi(τ) is moment of flexure, and I is the moment of inertia, K2And C2It is
Temperature transition is local buckling stress, calculating formula σ according to plane strain theory by stress exponent, linear temperature itemaxial=
σaxial=MΔTDo/ 2I, M in formulaΔT=E α Δs TI/Do, D0For outer diameter, Δ T is linear temperature component, and I is the moment of inertia, and E is elasticity
Modulus, α are coefficient of thermal expansion, and nonlinear temperature item stress presses formula σNL=E α TNLIt calculates, E is elasticity modulus, and α is to thermally expand to be
Number, TNLFor nonlinear temperature item, total stress σ=σ caused by temperature loadinga+σaxial+σNL, to the pressure loading of fatigue monitoring point
The monitor stress being multiplied by under 1MPa pressure carries out the total of vector superposed acquisition water supply ozzle monitoring point with the stress under temperature loading
Stress parameters；
12 temperature points are arranged altogether in steam generator fatigue sensitive part in the step 1.1.1, are measured using temperature
Measure the metal wall surface temperature of the temperature point；
Ozzle is imported and exported in steam generator in the step 1.1.2, cloth at secondary side steam (vapor) outlet ozzle and water supply ozzle
4 temperature points are set, for carrying out temperature measurement to fluid；
The step 3 specifically includes：It is required according to ASME specifications NB3200, the stress data in step 2 is utilized into rain flow way
Stress intensity cycle width is converted to, design fatigue curve is provided in conjunction with NB3200 annex and obtains monitoring point accumulation of fatigue damage system
Number, the system can both show practical fatigue damage coefficient, and can be according to the form of exponential function to monitoring point fatigue life
It makes prediction, realizes the monitoring to each monitoring point of steam generator fatigue life within the different cycles of operation.
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| CN107784156B (en) * | 2017-09-07 | 2020-11-03 | 中国船舶重工集团公司第七一九研究所 | Method for calculating parameters of steam discharge system of nuclear power plant |
| CN107941481A (en) * | 2017-09-30 | 2018-04-20 | 中国北方发动机研究所(天津) | A kind of high-temperature duration life assessment method of vehicle supercharger turbine |
| CN109979622B (en) * | 2017-12-27 | 2021-02-09 | 核动力运行研究所 | Nuclear power plant voltage stabilizer fatigue life online monitoring and evaluating system and method |
| CN110991884A (en) * | 2019-12-03 | 2020-04-10 | 上海核工程研究设计院有限公司 | Fatigue monitoring and service life assessment system for nuclear power plant |
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| JPH08247402A (en) * | 1995-03-15 | 1996-09-27 | Mitsubishi Heavy Ind Ltd | Service life monitoring device for pressure resistant part |
| JPH1096704A (en) * | 1996-09-24 | 1998-04-14 | Mitsubishi Heavy Ind Ltd | Monitering device for fatigue |
| CN103698236A (en) * | 2013-12-10 | 2014-04-02 | 中广核工程有限公司 | Method for estimating fatigue life of pipeline of nuclear power plant |
| CN105448359A (en) * | 2015-12-07 | 2016-03-30 | 中广核工程有限公司 | System and method for monitoring fatigue of nuclear power plant |
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| JPH08247402A (en) * | 1995-03-15 | 1996-09-27 | Mitsubishi Heavy Ind Ltd | Service life monitoring device for pressure resistant part |
| JPH1096704A (en) * | 1996-09-24 | 1998-04-14 | Mitsubishi Heavy Ind Ltd | Monitering device for fatigue |
| CN103698236A (en) * | 2013-12-10 | 2014-04-02 | 中广核工程有限公司 | Method for estimating fatigue life of pipeline of nuclear power plant |
| CN105448359A (en) * | 2015-12-07 | 2016-03-30 | 中广核工程有限公司 | System and method for monitoring fatigue of nuclear power plant |
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