CN102799716B - A kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant - Google Patents
A kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant Download PDFInfo
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- CN102799716B CN102799716B CN201210218546.5A CN201210218546A CN102799716B CN 102799716 B CN102799716 B CN 102799716B CN 201210218546 A CN201210218546 A CN 201210218546A CN 102799716 B CN102799716 B CN 102799716B
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The present invention relates to a kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant, this steam turbine has four stop valves, being connected to four main steam lines between four stop valves and main steam header, the method comprises the steps: that S1 sets up main steam line placement model；S2 carries out the main steam line of primary stress and secondary stress calculating and arranges calculating；S3 calculates steam turbine steam hammer operating mode response spectra, it is thus achieved that the response spectra of bad working environments；The response spectra of bad working environments as design input, is arranged pipeline antivibrator at main steam line stress maximum point, carries out dynamic analog calcutation by S4, and result meets design requirement, then carry out step S6, be unsatisfactory for, carry out step S5；S5 adjusts the rigidity of pipeline antivibrator, again carries out dynamic analog calcutation, if meeting design requirement, then carries out step S6, is unsatisfactory for, repeats step S5；S6 output channel antivibrator inventory and rigidity value.The method for designing of the present invention can meet the design requirement of pole bad working environments, safe and reliable.
Description
Technical field
The present invention relates to a kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant.
Background technology
Nuclear power plant steam is saturated vapor, and the amount of steam is bigger, when nuclear power plant runs, if nuclear island because of
Need emergency shut-down for safety reasons, steam turbine will removal of load, in this time, Steam Turbine's Main Vaper Valve is complete
Portion closes to protect steam turbine.As it is shown in figure 1, be the piping schematic of main steam system, wherein interface 1,
2,3,4 are connected with four stop valves respectively, and the other end of pipeline is connected with main steam header.Steamer owner
Steam valve can produce steam hammer when closing, and steam hammer can be huge to steam turbine cylinder and main steam line generation one
Impulsive force and moment of torsion, meeting damage equipment, even causes severe accident.For the sake of security, it is necessary to arrange
Reasonably pipeline antivibrator is to weaken the effect of steam hammer.Lack effective nuclear power plant Steam Turbine's Main Vaper Valve at present to prevent
Steam hammer method for designing, it is difficult to meet the anti-steam hammer requirement under bad working environments.
Summary of the invention
The technical problem to be solved in the present invention is, lacks effective anti-steam hammer method for designing for prior art
Defect, it is provided that a kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant, to meet various bad working environments
Anti-steam hammer requirement.
The technical solution adopted for the present invention to solve the technical problems is: a kind of nuclear power plant of structure steamer owner's vapour
Valve anti-steam hammer method for designing, described steam turbine has four stop valves, described four stop valves and main steam connection
Four main steam lines it are connected between case,
It is characterized in that,
Described anti-steam hammer method for designing comprises the steps:
S1 sets up main steam line placement model；
S2 carries out the main steam line of primary stress and secondary stress calculating and arranges calculating；
S3 calculates steam turbine steam hammer operating mode response spectra, it is thus achieved that the response spectra of bad working environments；
The response spectra of bad working environments as design input, is arranged by S4 at main steam line stress maximum point
Pipeline antivibrator, carries out dynamic analog calcutation, if the result of dynamic analog calcutation meets design requirement, then
Carry out step S6, be unsatisfactory for design and require then to carry out step S5；
S5 adjusts the rigidity of pipeline antivibrator, again carries out dynamic analog calcutation, if dynamic analog calcutation
Result meet design requirement, then carry out step S6, be unsatisfactory for design require then repeat step S5；
S6 output channel antivibrator inventory and rigidity value.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, in described step S3
Steam turbine steam hammer operating mode include one stop valve close, two stop valves simultaneously close off, three stop valves simultaneously close off,
Four stop valves simultaneously close off, a stop valve late release, a stop valve close a stop valve late release, two
Stop valve simultaneously closes off a stop valve late release and three stop valves simultaneously close off a stop valve late release
Operating mode.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, described bad working environments
It is the three stop valves operating modes that simultaneously close off a stop valve late release.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, described late release
Time is 1 second.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, in described step S4,
The stress maximum point of every segment pipe of every main steam line arranges a pipeline antivibrator.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, four main steam lines
The pipeline antivibrator of same position be one group, often the specification of group pipeline antivibrator is consistent.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, described pipeline antivibrator
Rigidity more than 1.3 × 107N/cm。
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, in described step S1
It is to use CAESAR II software to set up main steam line placement model.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, in described step S3
It it is the response spectra using AFT Impulse computed in software steam turbine steam hammer operating mode.
In design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, described step S4 is
CAESAR II software is used to carry out dynamic analog calcutation.
Implement the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, have the advantages that
In the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, various steam turbine steam hammer operating modes are entered
Having gone analysis, found out worst steam hammer operating mode, the dynamic analog of line pipe of going forward side by side road antivibrator, obtain sets
Meter pipeline damper arrangement result can meet the safety requirements under most evil bad steam hammer operating mode, can improve nuclear power
The safety that factory runs, effectively protection steam turbine and main steam line.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is nuclear power station main steam line schematic diagram；
Fig. 2 is the flow chart of the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing is detailed
Describe the detailed description of the invention of the bright present invention in detail.
It is illustrated in figure 1 the schematic diagram of nuclear power plant's steam turbine main steam line, including four main steam lines,
Wherein interface 1,2,3,4 is connected with four stop valves of steam turbine respectively, the other end of main steam line
Being connected with main steam header, every main steam line is made up of multistage pipeline.
As in figure 2 it is shown, be the flow chart of the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention,
How this Steam Turbine's Main Vaper Valve anti-steam hammer method for designing introducing the present invention below in conjunction with Fig. 2 is implemented,
This method for designing comprises the steps:
S1 sets up main steam line placement model, is to set up main steaming at CAESAR II software in the present embodiment
Steam pipe road placement model, CAESARII is a conventional piping stress analysis software, can carry out pipeline
Modeling, static stress analysis and dynamic stress analysis.
S2 carries out the main steam line layout of primary stress and secondary stress calculating and calculates, in the present embodiment,
This layout calculates and is also completed by CAESAR II software, it is possible to obtain answering of each segment pipe of main steam line
Power situation, identified sign maximum point.
S3 calculates steam turbine steam hammer operating mode response spectra, it is thus achieved that the response spectra of bad working environments.In the present embodiment,
It is to use AFT Impulse software to be analyzed calculating that the steam hammer operating mode of steamer pole is composed accordingly, AFT
Impulse is that a conventional dynamic fluid analyzes software, can be used to carry out the water hammer of pipeline or steam hammer divides
Analysis, in the present embodiment, is used for analyzing the response spectra of steam turbine steam hammer operating mode.So-called response spectra is in engineering
In meter, often require understanding system by the maximum response after impact loading, the displacement i.e. vibrated or add
The maximum of speed, maximum response is bent with the relation of certain parameter (such as incentive action time) of excitation
Line is referred to as response spectra.After analyzing the response spectra of various operating mode, worst steam hammer operating mode can be found out.
The response spectra of bad working environments as design input, is arranged by S4 at main steam line stress maximum point
Pipeline antivibrator, carries out dynamic analog calcutation, and in the present embodiment, dynamic analog calcutation is also to use
CAESARII software is carried out, after completing dynamic analog calcutation, if the result of dynamic analog calcutation meets
Design requirement, then carry out step S6, output channel antivibrator inventory and the rigidity value of pipeline antivibrator, if
It is unsatisfactory for design to require then to carry out step S5；
S5 adjusts the rigidity of pipeline antivibrator, again carries out dynamic analog calcutation, if dynamic analog calcutation
Result meet design requirement, then carry out the firm of step S6, output channel antivibrator inventory and pipeline antivibrator
Angle value, is unsatisfactory for design and requires then to repeat step S5, until the result of dynamic analog meets design requirement.
S6 output channel antivibrator inventory and rigidity value.
In the present embodiment, the steam turbine steam hammer operating mode in step S3 can include one stop valve close, two
Stop valve simultaneously closes off, three stop valves simultaneously close off, four stop valves simultaneously close off, a stop valve late release,
One stop valve closes a stop valve late release, two stop valves simultaneously close off a stop valve late release and three masters
Steam valve simultaneously closes off the operating mode of a stop valve late release, and these operating modes are substantially in steamer steam hammer operating mode
Some common severe steam hammer operating modes.Under normal circumstances, bad working environments is that three stop valves simultaneously close off a master
The operating mode of steam valve late release, more particularly simultaneously closes off a stop valve at three stop valves and postpones to close for 1 second
Operating mode.
In step s 4, every segment pipe of every main steam line all arranges a pipeline antivibrator, specifically
It is that one pipeline antivibrator is set at the stress maximum point of every segment pipe.Article four, the same position of main steam line
Pipeline antivibrator be one group, often the specification of group pipeline antivibrator is consistent, and so-called same position refers to be in four
Identical position in bar main steam line.In the present embodiment, the rigidity of pipeline antivibrator is optional is more than
1.3×107N/cm。
It is to be appreciated that in nuclear power plant's steamer owner's steam hammer anti-steam hammer method for designing of the present invention, above-mentioned build
The step of mould and analytical calculation is not limited to soft with above-mentioned concrete pipeline analysis software and dynamic fluid analysis
Part, it would however also be possible to employ other similar softwares are carried out.
In the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant of the present invention, to various steam turbine steam hammer works
Condition is analyzed, and finds out worst steam hammer operating mode, the dynamic analog of line pipe of going forward side by side road antivibrator, obtains
Design pipeline damper arrangement result can meet the safety requirements under most evil bad steam hammer operating mode, can improve
The safety that nuclear power plant runs, effectively protection steam turbine and main steam line.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned
Detailed description of the invention, above-mentioned detailed description of the invention is only schematic rather than restrictive, this
The those of ordinary skill in field, under the enlightenment of the present invention, is being protected without departing from present inventive concept and claim
Under the ambit protected, it may also be made that a lot of form, within these belong to the protection of the present invention.
Claims (10)
1. a design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant, described steam turbine has four stop valves, is connected to four main steam lines between described four stop valves and main steam header,
It is characterized in that,
Described anti-steam hammer method for designing comprises the steps:
S1 sets up main steam line placement model；
S2 carries out the main steam line of primary stress and secondary stress calculating and arranges calculating；
S3 calculates steam turbine steam hammer operating mode response spectra, it is thus achieved that the response spectra of bad working environments；
The response spectra of bad working environments is inputted by S4 as design, pipeline antivibrator is set at main steam line stress maximum point, carries out dynamic analog calcutation, if the result of dynamic analog calcutation meets design requirement, then carry out step S6, be unsatisfactory for design and require then to carry out step S5；
S5 adjusts the rigidity of pipeline antivibrator, again carries out dynamic analog calcutation, if the result of dynamic analog calcutation meets design requirement, then carries out step S6, is unsatisfactory for design and requires then to repeat step S5；
S6 output channel antivibrator inventory and rigidity value.
Design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant the most according to claim 1, it is characterized in that, the steam turbine steam hammer operating mode in described step S3 includes that a stop valve is closed, two stop valves simultaneously close off, three stop valves simultaneously close off, four stop valves simultaneously close off, a stop valve late release, a stop valve closes a stop valve late release, two stop valves simultaneously close off a stop valve late release and three stop valves simultaneously close off the operating mode of a stop valve late release.
Design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant the most according to claim 2, it is characterised in that described bad working environments is the operating mode that three stop valves simultaneously close off a stop valve late release.
Design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant the most according to claim 3, it is characterised in that the time of described late release is 1 second.
Design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant the most according to claim 1, it is characterised in that in described step S4, the stress maximum point of every segment pipe of every main steam line arranges a pipeline antivibrator.
Design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant the most according to claim 5, it is characterised in that the pipeline antivibrator of the same position of four main steam lines is one group, often the specification of group pipeline antivibrator is consistent.
Design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant the most according to claim 6, it is characterised in that the rigidity of described pipeline antivibrator is more than 1.3 × 107N/cm。
8. according to the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant described in any one of claim 1 to 7, it is characterised in that described step S1 is use CAESAR II software to set up main steam line placement model.
9. according to the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant described in any one of claim 1 to 7, it is characterised in that described step S3 is the response spectra using AFT Impulse computed in software steam turbine steam hammer operating mode.
10. according to the design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant described in any one of claim 1 to 7, it is characterised in that described step S4 is to use CAESAR II software to carry out dynamic analog calcutation.
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| CN201210218546.5A CN102799716B (en) | 2012-06-28 | 2012-06-28 | A kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant |
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| CN201210218546.5A CN102799716B (en) | 2012-06-28 | 2012-06-28 | A kind of design method for preventing steam hammer of main steam valves of steam turbine of nuclear power plant |
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| CN102799716A CN102799716A (en) | 2012-11-28 |
| CN102799716B true CN102799716B (en) | 2016-08-17 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121566A (en) * | 2010-01-11 | 2011-07-13 | 李林 | Method and equipment for processing water vapor before use |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121566A (en) * | 2010-01-11 | 2011-07-13 | 李林 | Method and equipment for processing water vapor before use |
Non-Patent Citations (6)
| Title |
|---|
| AFT Impulse 4.0分析软件在电厂设计中的应用;李克先等;《中国工程咨询》;20110210(第2期);第45-47页 * |
| Evaluating Dynamic Loads in Piping Systems Caused by Waterhammer;Jim Wilcox等;《Applied Flow Technology》;20120229;第1-24页 * |
| 使用CAESARⅡ对火电厂主蒸汽管道的动态分析;郑明秀等;《吉林电力》;20110625;第39卷(第3期);第1页第1栏第1段倒数第1-3行，第2页第2.1节第1段，第2.2节第2段，第3页第2.2.3节第3段，图1，表6 * |
| 火力发电厂主要管道精确动态分析方法及应用;张乐川等;《发电设备》;20111115;第25卷(第6期);第406页第3.2.4节第1段，第4节第3段 * |
| 精确时程分析在管道水（汽）锤计算中的应用探讨;李琳等;《化工设计》;20101215;第20卷(第06期);第18-23页 * |
| 高温高压蒸汽管道动态分析;郑军;《科技信息》;20091215(第35期);第793+760页 * |
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Address after: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Address before: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. |