CN109255176A - Primary Ioops surplus air dimension criteria value promotes analysis method and system after dynamic exhaust - Google Patents
Primary Ioops surplus air dimension criteria value promotes analysis method and system after dynamic exhaust Download PDFInfo
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- CN109255176A CN109255176A CN201811010659.XA CN201811010659A CN109255176A CN 109255176 A CN109255176 A CN 109255176A CN 201811010659 A CN201811010659 A CN 201811010659A CN 109255176 A CN109255176 A CN 109255176A
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- G06F30/20—Design optimisation, verification or simulation
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses primary Ioops surplus air dimension criteria values after the dynamic exhaust of one kind to promote analysis method and system, method includes: for the primary Ioops surplus air dimension criteria value to be promoted, and the feasibility promoted from primary Ioops water chemistry control angle to standard value is analyzed；After feasibility analysis passes through, discharging a possibility that causing primary Ioops to become two-phase flow from coolant to primary Ioops dissolved air is analyzed；After analyzing and being likely to occur two-phase flow, safety analysis is carried out to the unit under high-dissolvability air condition；Can not occur two-phase flow analyzing or after safety analysis passes through, the mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, the confirmation standard value to be promoted is available.The present invention can be used to the promotion of analytic demonstration nuclear power unit primary Ioops surplus air dimension criteria value, for the primary Ioops volume of air standard value to be promoted, confirm whether it can be used, it may also be used for the fields such as overhaul policy optimization.
Description
Technical field
It is promoted and is divided the present invention relates to primary Ioops surplus air dimension criteria value after nuclear power field, more particularly to a kind of dynamic exhaust
Analyse method and system.
Background technique
PWR nuclear power plant using water as the working medium of primary Ioops coolant, moderator and secondary circuit, coolant water be again
It works under hot radiation parameter.Therefore, corrosion phenomenon is even more serious and harmful in nuclear power plant.As fuel element cladding is broken
Damage makes fission product leak into primary Ioops, will increase the radioactivity of primary Ioops coolant.As one of etch-proof means, in machine
In group operation control process, need to be eliminated as much as dissolved oxygen.
Unit is uncapped restart after refueling outage during, need to carry out repeatedly quiet after primary Ioops are full of water
State exhaust and dynamic exhaust operation, remaining air in primary Ioops is discharged.Only when the primary Ioops measured remain remaining standard
Volume of air is lower than after 21 standard cubic meters, carries out nitrogen purging, until holding control case oxygen content is lower than 2%, just allows unit
Continue to go upward to 80 DEG C of platform, carries out chemical deoxidization.After chemical deoxidization, primary Ioops oxygen content in water need to always comply with chemistry
With the value required in radiochemistry technical specification.Compacted clay liners start-up course at present, it is general using first static exhaust, then
The method for carrying out dynamic exhaust (crawl main pump) carries out primary Ioops exhaust, judges that primary Ioops are remaining empty according to control case liquid level variation is held
Air volume, standard is 21 standard cubic meters at present.If primary Ioops surplus air volume is lower than 21 standard cubic meters, unit continues
Uplink carries out the operation such as chemical deoxidization.Due to unit difference, the difference of concrete operations details, it is more often to will appear main pump crawl
Situation still not up to standard after secondary, operator can only continue start and stop main pump to be vented at this time.Multiple start and stop main pump is exhausted, except danger
It outside the equipment safety of evil main pump, will also delay overhaul critical path, and be unfavorable for overhaul optimization.
Since each overhaul consumes a large amount of manpower and time, people in the exhaust of primary Ioops static state, dynamic exhaust operation
Member's radioactive dose is also more, domestic repeatedly to study and improve for a long time in the rebuilding management department of fortune nuclear power unit and operation department
Static, dynamic exhaust operation, including adjustment, static, dynamic exhaust sequence, installs interim pumping vacuum and accelerates exhaust etc.
Deng also achieving impressive achievement.But in the process of implementation, all there are some disadvantages in various degree.And primary Ioops are remaining empty
The promotion of air volume standard value is a very creative improved method.Compacted clay liners have no unit starting mistake at present
The research of primary Ioops surplus air dimension criteria value, the analysis promoted without primary Ioops surplus air dimension criteria value are promoted in journey
Method.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, it is latter to provide a kind of dynamic exhaust
Circuit surplus air dimension criteria value promotes analysis method and system.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of primary Ioops surplus air after moving exhaust
Dimension criteria value promotes analysis method, and method includes:
Chemical analysis step: it for the primary Ioops surplus air dimension criteria value to be promoted, is controlled from primary Ioops water chemistry
The feasibility that angle promotes standard value is analyzed；
Flow analysis step: after the feasibility analysis passes through, primary Ioops dissolved air is discharged from coolant and is led
A possibility that causing primary Ioops to become two-phase flow is analyzed；
Unit safety analytical procedure: after analyzing and being likely to occur two-phase flow, to the machine under high-dissolvability air condition
Group carries out safety analysis；
Important equipment mechanical analysis step: two-phase flow can not occur or after safety analysis passes through analyzing, right
The mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, what confirmation to be promoted
Standard value is available, otherwise confirms that the standard value to be promoted is unavailable.
Preferably, the method also includes:
Optimization Steps: after the confirmation standard value to be promoted is available, appearance control case purging strategy is analyzed and is optimized；With
And chemical platform diamine deoxygenation strategy is analyzed and is optimized.
Preferably, the flow analysis step specifically includes:
Primary Ioops and its auxiliary system are modeled；
Model based on foundation analyzes the thermal parameter of primary Ioops main node in main pump start-up course；
Saturated air solubility is calculated based on the thermal parameter；
For the primary Ioops surplus air dimension criteria value to be promoted, if air solubility caused by the promotion of standard value
Higher than the saturated air solubility, then confirm that the dissolved air in primary Ioops will be precipitated, primary Ioops flowing will become two-phase
Flowing.
Preferably, the unit safety analytical procedure specifically includes:
Under the cooling normal shutdown mode of residual heat removal system, following three kinds of analyses are executed: under primary Ioops two-phase flow regime
Design basis accident analysis, the primary Ioops system under primary Ioops two-phase flow regime and equipment security function analysis, one time
The structural integrity analysis of equipment and component under the two-phase flow regime of road；
If three of the above analysis passes through, then judge that the unit under high-dissolvability air condition carries out safety analysis and passes through.
Preferably, the important equipment mechanical analysis step specifically includes:
The operation of primary Ioops important equipment gassiness is modeled, the various performances and mechanics of analysis important equipment gassiness operation
Index, and be compared with related specifications and live related data, it is qualified such as to compare, then determines that the mechanical analysis passes through.
The invention also discloses primary Ioops surplus air dimension criteria values after the dynamic exhaust of one kind to promote analysis system, system packet
It includes:
Chemical analyzer module, for being directed to the primary Ioops surplus air dimension criteria value to be promoted, from primary Ioops water chemistry
The feasibility that control angle promotes standard value is analyzed；
Flow analysis module, for being released from coolant primary Ioops dissolved air after the feasibility analysis passes through
Putting a possibility that causing primary Ioops to become two-phase flow is analyzed；
Unit safety analysis module, for after analyzing and being likely to occur two-phase flow, under high-dissolvability air condition
Unit carry out safety analysis；
Important equipment mechanical analysis module, for that two-phase flow can not occur or safety analysis passes through analyzing
Afterwards, the mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, confirmation is intended to mention
The standard value risen is available, otherwise confirms that the standard value to be promoted is unavailable.
Preferably, the system also includes:
Optimization module carries out analysis and excellent to control case purging strategy is held for after the confirmation standard value to be promoted is available
Change；And chemical platform diamine deoxygenation strategy is analyzed and is optimized.
Preferably, the flow analysis module specifically includes:
Thermal parameter analytical unit, for analyzing main pump and opening based on the model established to primary Ioops and its auxiliary system
The thermal parameter of primary Ioops main node during dynamic；
Saturated air solubility analytical unit, for calculating saturated air solubility based on the thermal parameter；
Two-phase flow predicting unit, for for the primary Ioops surplus air dimension criteria value to be promoted, if standard value
Air solubility caused by being promoted is higher than the saturated air solubility, then confirms that the dissolved air in primary Ioops will analyse
Out, primary Ioops flowing will become two-phase flow.
Preferably, the unit safety analysis module is specifically used under the cooling normal shutdown mode of residual heat removal system,
Execute following three kinds of analyses: under the design basis accident analysis, primary Ioops two-phase flow regime under primary Ioops two-phase flow regime
Primary Ioops system and the security function analysis of equipment, the equipment under primary Ioops two-phase flow regime and component structural intergrity
Analysis；If three of the above analysis passes through, then judge that the unit under high-dissolvability air condition carries out safety analysis and passes through.
Preferably, the important equipment mechanical analysis module is specifically used for building the operation of primary Ioops important equipment gassiness
Mould, the various performances and mechanical index of analysis important equipment gassiness operation, and compared with related specifications and live related data
Right, it is qualified such as to compare, then determines that the mechanical analysis passes through.
Primary Ioops surplus air dimension criteria value promotes analysis method and system after dynamic exhaust of the invention, has with following
Beneficial effect: the present invention can be used to analytic demonstration nuclear power unit primary Ioops volume of air standard value and be promoted, for be promoted one
Return-air dimension criteria value, confirms whether it can be used, it may also be used for the fields such as overhaul policy optimization.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings:
Fig. 1 is the process of primary Ioops surplus air dimension criteria value promotion analysis method after the dynamic exhaust that embodiment one provides
Figure；
Fig. 2 is the structure of primary Ioops surplus air dimension criteria value promotion analysis system after the dynamic exhaust that embodiment two provides
Schematic diagram.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give exemplary embodiments of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
The total thinking of the present invention is: for the primary Ioops surplus air dimension criteria value to be promoted, from primary Ioops water chemistry
The feasibility that control angle promotes standard value is analyzed；After the feasibility analysis passes through, to primary Ioops dissolved air
A possibility that release causes primary Ioops to become two-phase flow from coolant is analyzed；Two-phase flow is likely to occur analyzing
Afterwards, safety analysis is carried out to the unit under high-dissolvability air condition；Two-phase flow or safety can not occur analyzing
After analysis passes through, the mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through,
Confirm that the standard value to be promoted is available, otherwise confirms that the standard value to be promoted is unavailable.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application
The detailed description of technical solution, rather than the restriction to technical scheme, in the absence of conflict, the present invention are implemented
Technical characteristic in example and embodiment can be combined with each other.
Embodiment one
With reference to Fig. 1, the present embodiment one discloses a kind of primary Ioops surplus air dimension criteria value promotion analysis after moving exhaust
Method, method include:
Chemical analysis step S101: for the primary Ioops surplus air dimension criteria value to be promoted, from primary Ioops water chemistry
The feasibility that control angle promotes standard value is analyzed；
Flow analysis step S102: after the feasibility analysis passes through, primary Ioops dissolved air is released from coolant
Putting a possibility that causing primary Ioops to become two-phase flow is analyzed；
Unit safety analytical procedure S103: after analyzing and being likely to occur two-phase flow, under high-dissolvability air condition
Unit carry out safety analysis；
Important equipment mechanical analysis step S104: two-phase flow can not occur or safety analysis passes through analyzing
Afterwards, the mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, confirmation is intended to mention
The standard value risen is available, otherwise confirms that the standard value to be promoted is unavailable.
Optimization Steps S105: after the confirmation standard value to be promoted is available, analysis and excellent is carried out to control case purging strategy is held
Change；And chemical platform diamine deoxygenation strategy is analyzed and is optimized.
About step S101:
In one specific embodiment, the chemical analysis step S101 is specifically included:
S1011, for the primary Ioops volume of air standard value to be promoted, analytical standard value promoted to dynamic exhaust link,
Hold the influence of the total time of control case purging link, chemical platform diamine deoxygenation link；
If S1012, total time without departing from total time corresponding to original standard value, determine that feasibility analysis passes through.
Standard value is promoted, then after meaning dynamic exhaust link, primary Ioops surplus air volume will be above original
21 standard cubic meter of standard value, so more surplus airs need to purge link, chemical platform diamine in subsequent appearance control case
Deoxygenation link processing is fallen, and after chemical platform diamine deoxygenation link, should ensure that dissolved oxygen content is less than chemistry and radiochemistry
The value required in technical specification such as 0.1ppm.
Specifically, after this dynamic exhaust surplus air promotion, can pass through increase hold control case purge link purging
Number and chemical platform diamine deoxygenation link increase diamine amount to solve, and specific caused time change can pass through model
Prediction can also be estimated based on empirical data comparison.
About step S102:
According to the design method of Guidelines and primary Ioops system and equipment, when presurized water reactor thermal-Hydraulics Design, do not consider
The micro-air (incondensable gas) dissolved in coolant.Even if considering, it is considered that the non-condensing gas being dissolved in coolant
Body and liquid phase have the uniform flow of same velocity field, temperature field, pressure field.If primary Ioops surplus air dimension criteria value is promoted
It is feasible, it is meant that dynamic exhaust terminates to before chemical platform diamine deoxygenation qualification, flows in primary Ioops and main auxiliary system
Coolant in, air solubility increase.According to tow-phase flow theory, transient state, which occurs, in primary Ioops leads to primary Ioops pressure reduction
When, solve homogeneously in gas in coolant will occur gasification phenomenon (dissolved air is discharged from coolant, becomes bubble, and
And the bubble has different velocity fields, temperature field, pressure field from the coolant of surrounding), flowing at this time is two-phase flow (blister
Stream).According to analysis above, if primary Ioops surplus air dimension criteria value is promoted after dynamic exhaust, need to primary Ioops and its
Auxiliary system is modeled, and is analyzed in transient process caused by main pump start and stop, whether primary Ioops occur dissolved air from coolant
Middle release becomes two-phase flow.For CPR1000 unit, result is analyzed are as follows: primary Ioops surplus air dimension criteria value improves
To 24 standard cubic meters, the dissolved air flowed in coolant will not discharge and form bubble, not will form two-phase flow, to one
The operational safety of circuit system and equipment does not influence.
In one specific embodiment, the flow analysis step 102 is specifically included:
S1021, primary Ioops and its auxiliary system are modeled；
S1022, the model based on foundation analyze the thermal parameter of primary Ioops main node in main pump start-up course, such as
Pressure, temperature etc..
S1023, saturated air solubility is calculated based on the thermal parameter, usually calculates corresponding saturation oxygen dissolution
Degree and saturation nitrogen solubility.
S1024, for the primary Ioops surplus air dimension criteria value to be promoted, if air caused by the promotion of standard value
Solubility is higher than the saturated air solubility, and usually oxygen, nitrogen solubility is respectively higher than saturated concentration of oxygen gas, saturation
Nitrogen solubility then confirms that the dissolved air in primary Ioops will be precipitated, and primary Ioops flowing will become two-phase flow.
About step S103:
In one specific embodiment, the unit safety analytical procedure S103 is specifically included: residual heat removal system is cold
But under normal shutdown mode, following three kinds of analyses are executed: design basis accident analysis under primary Ioops two-phase flow regime, one time
Primary Ioops system and equipment under the two-phase flow regime of road security function analysis, the equipment under primary Ioops two-phase flow regime and
The structural integrity analysis of component；If three of the above analysis passes through, then judge that the unit under high-dissolvability air condition carries out
Safety analysis passes through.
About step S104:
In one specific embodiment, the important equipment mechanical analysis step S104 is specifically included: to primary Ioops weight
The operation of equipment gassiness is wanted to be modeled, the various performances and mechanical index of analysis important equipment gassiness operation, and and related specifications
It is compared with live related data, it is qualified such as to compare, then determines that the mechanical analysis passes through.
For example, primary Ioops important equipment includes main pump, then three-dimensional modeling can be carried out to main pump, calculate analysis gassiness operation
Under pump discharge, lift, and carry out finite element analysis and evaluation of vibration.
About step S105:
Holding control case purging includes two stages: build the pressure purging and interval purge.It builds the pressure and is purged through raising appearance control case liquid level,
The oxygen in control upper box part space is held in discharge, and the standard in the stage is less than 10% at present；Interval purging is that exhaust valve is opened in timing
Oxygen is discharged, the standard in the stage is less than 2%.So can be checked by modeling analysis and field data, analysis is every
The time of a link and effect, or even change the standard of purge stages of building the pressure and reach same to realize least purging number
2% standard.
About the optimization of chemical platform diamine deoxygenation, dissolved oxygen content, appearance in primary Ioops coolant control the dissolved oxygen in case
Amount, free oxygen amount remaining in primary Ioops, there are also the oxygen that the decomposing hydrogen dioxide solution being added generates, can all influence diamine additional amount and
Deaerating effect.Each influence factor and its effect are analyzed, optimal diamine additional amount is obtained.
Embodiment two
With reference to Fig. 2, based on the inventive concept being the same as example 1, present embodiment discloses primary Ioops after the dynamic exhaust of one kind
Surplus air dimension criteria value promotes analysis system, comprising:
Chemical analyzer module 201, for being directed to the primary Ioops surplus air dimension criteria value to be promoted, from primary Ioops aquation
The feasibility that control angle promotes standard value is learned to analyze；
Flow analysis module 202, for after the feasibility analysis passes through, to primary Ioops dissolved air from coolant
A possibility that release causes primary Ioops to become two-phase flow is analyzed；
Unit safety analysis module 203, for after analyzing and being likely to occur two-phase flow, to high-dissolvability air condition
Under unit carry out safety analysis；
Important equipment mechanical analysis module 204, for two-phase flow or safety analysis can not occur logical analyzing
Later, the mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, confirms desire
The standard value of promotion is available, otherwise confirms that the standard value to be promoted is unavailable.
Optimization module 205, for being analyzed simultaneously control case purging strategy is held after the confirmation standard value to be promoted is available
Optimization；And chemical platform diamine deoxygenation strategy is analyzed and is optimized.
Specifically, the flow analysis module 202 specifically includes:
Thermal parameter analytical unit, for analyzing main pump and opening based on the model established to primary Ioops and its auxiliary system
The thermal parameter of primary Ioops main node during dynamic；
Saturated air solubility analytical unit, for calculating saturated air solubility based on the thermal parameter；
Two-phase flow predicting unit, for for the primary Ioops surplus air dimension criteria value to be promoted, if standard value
Air solubility caused by being promoted is higher than the saturated air solubility, then confirms that the dissolved air in primary Ioops will analyse
Out, primary Ioops flowing will become two-phase flow.
Specifically, the unit safety analysis module is specifically used under the cooling normal shutdown mode of residual heat removal system,
Execute following three kinds of analyses: under the design basis accident analysis, primary Ioops two-phase flow regime under primary Ioops two-phase flow regime
Primary Ioops system and the security function analysis of equipment, the equipment under primary Ioops two-phase flow regime and component structural intergrity
Analysis；If three of the above analysis passes through, then judge that the unit under high-dissolvability air condition carries out safety analysis and passes through.
Specifically, the important equipment mechanical analysis module 203 be specifically used for primary Ioops important equipment gassiness run into
Row modeling, the various performances of analysis important equipment gassiness operation, and is compared with related specifications and field performance data, such as than
To qualification, then determine that mechanical characteristic analysis passes through.
Other detailed contents can be with reference implementation example one, and details are not described herein again.
, it is noted that being divided into these modules in the description of various modules above, being for clarity.However,
In actual implementation, the boundary of various modules can be fuzzy.For example, any or all functionalities module herein can be total to
Enjoy various hardware and/or software element.In another example any and/or all functional modules herein can be by shared processing
Device executes software instruction completely or partially to implement.In addition, the various software submodules being performed by one or more processors can
To be shared between various software modules.Correspondingly, unless explicitly requested, the scope of the present invention is not by various hardware and/or software
The limitation of the mandatory boundary of interelement.
In conclusion primary Ioops surplus air dimension criteria value promotes analysis method and system after dynamic exhaust of the invention,
Have the advantages that the present invention can be used to primary Ioops surplus air volume mark after analytic demonstration nuclear power unit dynamic exhaust
Quasi- value is promoted, and for the primary Ioops surplus air dimension criteria value to be promoted, confirms whether it can be used, it may also be used for overhaul strategy
The fields such as optimization.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. primary Ioops surplus air dimension criteria value promotes analysis method after the dynamic exhaust of one kind, which is characterized in that method includes:
Chemical analysis step: for the primary Ioops surplus air dimension criteria value to be promoted, angle is controlled from primary Ioops water chemistry
The feasibility promoted to standard value is analyzed；
Flow analysis step: after the feasibility analysis passes through, discharging from coolant to primary Ioops dissolved air leads to one
Circuit becomes a possibility that two-phase flow and is analyzed；
Unit safety analytical procedure: after analyzing and being likely to occur two-phase flow, to the unit under high-dissolvability air condition into
Row safety analysis；
Important equipment mechanical analysis step: two-phase flow can not occur or after safety analysis passes through analyzing, to one time
The mechanical characteristic of road important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, confirms the standard to be promoted
Value is available, otherwise confirms that the standard value to be promoted is unavailable.
2. primary Ioops surplus air dimension criteria value promotes analysis method, feature after dynamic exhaust according to claim 1
It is, the method also includes:
Optimization Steps: after the confirmation standard value to be promoted is available, appearance control case purging strategy is analyzed and is optimized；And change
Platform diamine deoxygenation strategy is learned to be analyzed and optimized.
3. nuclear power unit primary Ioops volume of air standard value according to claim 1 promotes analysis method, which is characterized in that
The flow analysis step specifically includes:
Primary Ioops and its auxiliary system are modeled；
Model based on foundation analyzes the thermal parameter of primary Ioops main node in main pump start-up course；
Saturated air solubility is calculated based on the thermal parameter；
For the primary Ioops surplus air dimension criteria value to be promoted, if air solubility caused by the promotion of standard value is higher than
The saturated air solubility then confirms that the dissolved air in primary Ioops will be precipitated, and primary Ioops flowing will become two-phase flow.
4. primary Ioops surplus air dimension criteria value promotes analysis method, feature after dynamic exhaust according to claim 1
It is, the unit safety analytical procedure specifically includes:
Under the cooling normal shutdown mode of residual heat removal system, following three kinds of analyses: setting under primary Ioops two-phase flow regime are executed
Count security function analysis, the primary Ioops two of basis accident analysis, the primary Ioops system under primary Ioops two-phase flow regime and equipment
The structural integrity analysis of equipment and component under phase flow operating mode；
If three of the above analysis passes through, then judge that the unit under high-dissolvability air condition carries out safety analysis and passes through.
5. primary Ioops surplus air dimension criteria value promotes analysis method, feature after dynamic exhaust according to claim 1
It is, the important equipment mechanical analysis step specifically includes:
The operation of primary Ioops important equipment gassiness is modeled, the various performances and mechanics of analysis important equipment gassiness operation refer to
Mark, and be compared with related specifications and live related data, it is qualified such as to compare, then determines that the mechanical analysis passes through.
6. primary Ioops surplus air dimension criteria value promotes analysis system after the dynamic exhaust of one kind characterized by comprising
Chemical analyzer module is controlled for being directed to the primary Ioops surplus air dimension criteria value to be promoted from primary Ioops water chemistry
The feasibility that angle promotes standard value is analyzed；
Flow analysis module, for discharging and leading from coolant to primary Ioops dissolved air after the feasibility analysis passes through
A possibility that causing primary Ioops to become two-phase flow is analyzed；
Unit safety analysis module, for after analyzing and being likely to occur two-phase flow, to the machine under high-dissolvability air condition
Group carries out safety analysis；
Important equipment mechanical analysis module is right for that two-phase flow can not occur or after safety analysis passes through analyzing
The mechanical characteristic of primary Ioops important equipment gassiness operation is analyzed, if mechanical characteristic analysis passes through, what confirmation to be promoted
Standard value is available, otherwise confirms that the standard value to be promoted is unavailable.
7. primary Ioops surplus air dimension criteria value promotes analysis system, feature after dynamic exhaust according to claim 6
It is, the system also includes:
Optimization module, for after the confirmation standard value to be promoted is available, appearance control case purging strategy being analyzed and being optimized；With
And chemical platform diamine deoxygenation strategy is analyzed and is optimized.
8. primary Ioops surplus air dimension criteria value promotes analysis system, feature after dynamic exhaust according to claim 6
It is, the flow analysis module specifically includes:
Thermal parameter analytical unit, for analyzing main pump and starting based on the model established to primary Ioops and its auxiliary system
The thermal parameter of primary Ioops main node in journey；
Saturated air solubility analytical unit, for calculating saturated air solubility based on the thermal parameter；
Two-phase flow predicting unit, for for the primary Ioops surplus air dimension criteria value to be promoted, if the promotion of standard value
Caused air solubility is higher than the saturated air solubility, then confirms that the dissolved air in primary Ioops will be precipitated, and one
Circuit flowing will become two-phase flow.
9. primary Ioops surplus air dimension criteria value promotes analysis system, feature after dynamic exhaust according to claim 6
It is, the unit safety analysis module is specifically used under the cooling normal shutdown mode of residual heat removal system, executes following three
Kind analysis: the primary Ioops system under design basis accident analysis, primary Ioops two-phase flow regime under primary Ioops two-phase flow regime
The structural integrity analysis of the analysis of the security function of system and equipment, the equipment under primary Ioops two-phase flow regime and component；Such as with
Upper three kinds of analyses pass through, then judge that the unit under high-dissolvability air condition carries out safety analysis and passes through.
10. primary Ioops surplus air dimension criteria value promotes analysis system, feature after dynamic exhaust according to claim 6
It is, the important equipment mechanical analysis module is specifically used for modeling the operation of primary Ioops important equipment gassiness, analysis weight
The various performances and mechanical index for wanting equipment gassiness to run, and be compared with related specifications and live related data, such as compare
Qualification then determines that the mechanical analysis passes through.
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