CN110470689A - Evaluation method based on equivalent life loss under La-rice parametric method heat resisting steel different temperatures - Google Patents
Evaluation method based on equivalent life loss under La-rice parametric method heat resisting steel different temperatures Download PDFInfo
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Abstract
The invention discloses a kind of evaluation methods of equivalent life loss under heat resisting steel different temperatures based on La-rice parametric method, comprising steps of obtaining high temperature track overtemperature situation by power plant's operation monitoring system；By deriving to La-rice parametric method formula, the equivalent life loss coefficient at a temperature of different overtemperatures is obtained；By equivalent life loss coefficient, the runing time under different temperatures is calculated relative to the runing time under normal operating temperature, the life consumption for being reduced to run certain time under normal temperature calculates.
Description
Technical field
The invention belongs to thermal power generating technology fields, and in particular to a kind of based on La-rice parametric method heat resisting steel not equality of temperature
Spend the evaluation method of lower equivalent life loss.
Background technique
Thermal power plant's high temperature track should be run under design temperature in normal conditions, but since Combustion Operation of Boilers becomes
Carbonated drink flow abnormalities in change or pressure-containing member, high temperature track is whole or part often has the case where overtemperature.When to height
When warm pressure-containing member heat resisting steel carries out life appraisal, needs to calculate separately the life consumption under different temperatures and summarize again, if overtemperature
Situation is complicated, and overtemperature temperature is different and length of time is different, then it is very complicated to calculate separately life consumption.
Summary of the invention
It is an object of the invention to have quickly and effectively to calculate the life consumption of power plant's high temperature track at different temperatures
Total amount provides a kind of evaluation method of equivalent life loss under the heat resisting steel different temperatures based on La-rice parametric method, this method
The calculating process to power plant's high temperature track material lifetime attrition inventory quantity in the case of complicated overtemperature can be significantly simplified, the longevity is improved
Life assessment efficiency.
The present invention adopts the following technical scheme that realize:
Evaluation method based on equivalent life loss under La-rice parametric method heat resisting steel different temperatures, comprising the following steps:
Step 1 sets power plant's high temperature track normal operating temperature as T1, since sometime overheating operation,
Temperature is T2, the overtemperature time is t2；Assuming that internal pressure stress σ suffered by whole service time component is constant；If t1For high temperature track
Heat resisting steel is in T2Lower operation t2It is equivalent in T1Under runing time；Calculate T2At a temperature of opposite T1The equivalent life loss rate of temperature
A, wherein A=t2/t1；
After step 2, acquisition equivalent life loss rate A, by the runing time under different temperatures relative to normal operating temperature
Under runing time calculate, be reduced under normal temperature run the predetermined time life consumption calculate.
A further improvement of the present invention lies in that step 1 specifically includes following implemented step:
1) normal operating temperature T1, overheating operation temperature T2, overtemperature time t2The acquisition of data, runs number by power plant
It is completed according to monitoring and acquisition system；
2) La-rice parametric method is defined on heat resisting steel of the same race in the case where stress σ is constant, T1(C+lgt1)=T2(C+
lgt2), wherein T is open type temperature, and C is material constant, and t is runing time；
3) lgt can be obtained by formula in step 2)2=[(T1-T2)C+T1lgt1]/T2=(T1/T2)lgt1+(T1-T2)C/T2；
4) t can be obtained by formula in step 3)2=10[(T1/T2)lgt1+(T1-T2)C/T2]；
5) t can be obtained by formula in step 4)2=10(T1-T2)C/T2×10(T1/T2)lgt1=10(T1-T2)C/T2×t1 T1/T2；
6) T can be obtained by formula in step 5)2At a temperature of opposite T1The equivalent life loss rate A=t of temperature2/t1=10(T1 -T2)C/T2×t1 (T1-T2)/T2；
7) according to formula in step 6), 1 < t1 (T1-T2)/T2< 10, therefore can be by t1 (T1-T2)/T210 are taken, then A=t2/t1=10(T1-T2)C/T2× 10=10[(T1-T2)C+T2]/T2。
The invention has the following beneficial technical effects:
La-rice parametric method is a kind of common method of heat resisting steel life appraisal.Itself by assuming that and simplify, by heat resisting steel temperature
Degree and time are expressed as function P (σ)=T (C+lgt) of suffered stress.It can be obtained by being derived to La-rice parametric method formula
Heat resisting steel equivalent life loss rate under different temperatures is obtained, thus the life consumption under different temperatures different time can be reduced to together
The life consumption of certain time at a temperature of one, greatly simplifies life consumption amount of calculation.
The evaluation method of equivalent life loss under the heat resisting steel different temperatures of the present invention based on La-rice parametric method,
By deriving to La-rice parametric method formula, heat resisting steel equivalent life loss rate under different temperatures is obtained, it thus can will be different
Life consumption under temperature different time is reduced to the life consumption of certain time under same temperature, and life consumption meter is greatly decreased
Operator workload simplifies the calculating process to power plant's high temperature track material lifetime attrition inventory quantity in the case of complicated overtemperature, improves
Life appraisal efficiency.
Specific embodiment
The present invention is made further instructions below.
The estimation side of equivalent life loss under a kind of heat resisting steel different temperatures based on La-rice parametric method provided by the invention
Method, comprising the following steps:
Step 1, power plant's high temperature track normal operating temperature are T1, since sometime overheating operation, temperature
For T2, the overtemperature time is t2.Assuming that internal pressure stress σ suffered by whole service time component is constant.If t1It is heat-resisting for high temperature track
Steel is in T2Lower operation t2It is equivalent in T1Under runing time.By under a kind of heat resisting steel different temperatures based on La-rice parametric method
The evaluation method of equivalent life loss calculates T2At a temperature of opposite T1The equivalent life loss rate A (t of temperature2/t1), it specifically includes
Following implemented step:
1) normal operating temperature T1, overheating operation temperature T2, overtemperature time t2The acquisition of data, runs number by power plant
It is completed according to monitoring and acquisition system.
2) La-rice parametric method is defined on heat resisting steel of the same race in the case where stress σ is constant, T1(C+lgt1)=T2(C+
lgt2), wherein T is open type temperature, and C is material constant, and t is runing time；
3) lgt can be obtained by formula in step 2)2=[(T1-T2)C+T1lgt1]/T2=(T1/T2)lgt1+(T1-T2)C/T2；
4) t can be obtained by formula in step 3)2=10[(T1/T2)lgt1+(T1-T2)C/T2]；
5) t can be obtained by formula in step 4)2=10(T1-T2)C/T2×10(T1/T2)lgt1=10(T1-T2)C/T2×t1 T1/T2；
6) T can be obtained by formula in step 5)2At a temperature of opposite T1The equivalent life loss rate A=t of temperature2/t1=10(T1 -T2)C/T2×t1 (T1-T2)/T2；
7) according to formula in step 6), it is characterised in that 1 < t1 (T1-T2)/T2< 10, therefore can be by t1 (T1-T2)/T210 are taken, then A
=t2/t1=10(T1-T2)C/T2× 10=10[(T1-T2)C+T2]/T2。
After step 2, acquisition equivalent life loss rate A, by the runing time under different temperatures relative to normal operating temperature
Under runing time calculate, be reduced under normal temperature run certain time life consumption calculate.
Claims (2)
1. the evaluation method based on equivalent life loss under La-rice parametric method heat resisting steel different temperatures, which is characterized in that including
Following steps:
Step 1 sets power plant's high temperature track normal operating temperature as T1, since sometime overheating operation, temperature is
T2, the overtemperature time is t2；Assuming that internal pressure stress σ suffered by whole service time component is constant；If t1For high temperature track heat resisting steel
In T2Lower operation t2It is equivalent in T1Under runing time；Calculate T2At a temperature of opposite T1The equivalent life loss rate A of temperature, wherein
A=t2/t1；
After step 2, acquisition equivalent life loss rate A, by the runing time under different temperatures relative under normal operating temperature
Runing time is calculated, and is reduced to run the life consumption calculating of predetermined time under normal temperature.
2. the estimation of equivalent life loss under the heat resisting steel different temperatures according to claim 1 based on La-rice parametric method
Method, which is characterized in that step 1 specifically includes following implemented step:
1) normal operating temperature T1, overheating operation temperature T2, overtemperature time t2The acquisition of data is supervised by power plant's operation data
Control is completed with acquisition system；
2) La-rice parametric method is defined on heat resisting steel of the same race in the case where stress σ is constant, T1(C+lgt1)=T2(C+lgt2),
Middle T is open type temperature, and C is material constant, and t is runing time；
3) lgt can be obtained by formula in step 2)2=[(T1-T2)C+T1lgt1]/T2=(T1/T2)lgt1+(T1-T2)C/T2；
4) t can be obtained by formula in step 3)2=10[(T1/T2)lgt1+(T1-T2)C/T2]；
5) t can be obtained by formula in step 4)2=10(T1-T2)C/T2×10(T1/T2)lgt1=10(T1-T2)C/T2×t1 T1/T2；
6) T can be obtained by formula in step 5)2At a temperature of opposite T1The equivalent life loss rate A=t of temperature2/t1=10(T1-T2)C/T2
×t1 (T1-T2)/T2；
7) according to formula in step 6), 1 < t1 (T1-T2)/T2< 10, therefore can be by t1 (T1-T2)/T210 are taken, then A=t2/t1=10(T1 -T2)C/T2× 10=10[(T1-T2)C+T2]/T2。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630254A (en) * | 2020-12-11 | 2021-04-09 | 江苏华彤建设工程有限公司 | Bus duct service life prediction method based on thermal service life loss at variable temperature |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04215047A (en) * | 1990-02-16 | 1992-08-05 | Westinghouse Electric Corp <We> | Method for determining equivalent average temperature associated with temperature histeresis of apparatus |
| CN101196507B (en) * | 2007-12-28 | 2012-02-01 | 西安交通大学 | Method for predicting creep life of power boiler heatproof material |
| CN107843509A (en) * | 2016-09-20 | 2018-03-27 | 中国科学院金属研究所 | Based on room temperature Brookfield Hardness Prediction supercritical unit T/P92 heat resisting steel residue creep rupture life appraisal procedures |
| CN106896133B (en) * | 2017-02-14 | 2019-04-05 | 北京工业大学 | A kind of multiaxis Life Prediction of Thermomechanical Fatigue method based on isothermal fatigue and creep fatigue |
| CN109856039A (en) * | 2019-04-08 | 2019-06-07 | 大连理工大学 | Inner screw channel type ethane cracking furnace pipe residue lifetime estimation method based on L-M parametric method |
-
2019
- 2019-08-20 CN CN201910770576.9A patent/CN110470689B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04215047A (en) * | 1990-02-16 | 1992-08-05 | Westinghouse Electric Corp <We> | Method for determining equivalent average temperature associated with temperature histeresis of apparatus |
| CN101196507B (en) * | 2007-12-28 | 2012-02-01 | 西安交通大学 | Method for predicting creep life of power boiler heatproof material |
| CN107843509A (en) * | 2016-09-20 | 2018-03-27 | 中国科学院金属研究所 | Based on room temperature Brookfield Hardness Prediction supercritical unit T/P92 heat resisting steel residue creep rupture life appraisal procedures |
| CN106896133B (en) * | 2017-02-14 | 2019-04-05 | 北京工业大学 | A kind of multiaxis Life Prediction of Thermomechanical Fatigue method based on isothermal fatigue and creep fatigue |
| CN109856039A (en) * | 2019-04-08 | 2019-06-07 | 大连理工大学 | Inner screw channel type ethane cracking furnace pipe residue lifetime estimation method based on L-M parametric method |
Non-Patent Citations (1)
| Title |
|---|
| 杨哲一 等: "火电厂老机组延寿评估方法研究", 《铸造技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630254A (en) * | 2020-12-11 | 2021-04-09 | 江苏华彤建设工程有限公司 | Bus duct service life prediction method based on thermal service life loss at variable temperature |
| CN112630254B (en) * | 2020-12-11 | 2022-03-08 | 江苏华彤建设工程有限公司 | Bus duct service life prediction method based on thermal service life loss at variable temperature |
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Effective date of registration: 20191126 Address after: 710032 Shaanxi province Xi'an Beilin District Xingqing Road No. 136 Applicant after: Xi'an Thermal Power Research Institute Co., Ltd. Applicant after: Zhuhai Power Plant of Guangdong Energy Group Co., Ltd Address before: 710032 Shaanxi province Xi'an Beilin District Xingqing Road No. 136 Applicant before: Xi'an Thermal Power Research Institute Co., Ltd. |
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