STUDY ON SERVICE LIFE OF X20CrMoWV121 MAIN STEM PIPE AFTER LONG-TERM OPERATION

ZHAO Yong-ning1; LIU Fang-zhu2; LIU Tian-zuo31.Shandong Electric Power Research Institute

doi:10.19666/j.rlfd.2007.10.021

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STUDY ON SERVICE LIFE OF X20CrMoWV121 MAIN STEM PIPE AFTER LONG-TERM OPERATION

更新时间：2025-09-28

- STUDY ON SERVICE LIFE OF X20CrMoWV121 MAIN STEM PIPE AFTER LONG-TERM OPERATION
- Thermal Power Generation Issue 10, Pages: 72-75(2007)
- 作者机构：
  
  1. 山东电力研究院
  2. 莱芜发电厂
  3. 潍坊发电厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.10.021
  CLC： TG115.5
- Published：2007
- 稿件说明：
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ZHAO Yong-ning1, LIU Fang-zhu2, LIU Tian-zuo31.Shandong Electric Power Research Institute. STUDY ON SERVICE LIFE OF X20CrMoWV121 MAIN STEM PIPE AFTER LONG-TERM OPERATION[J]. Thermal power generation, 2007, (10): 72-75.
DOI：

ZHAO Yong-ning1, LIU Fang-zhu2, LIU Tian-zuo31.Shandong Electric Power Research Institute. STUDY ON SERVICE LIFE OF X20CrMoWV121 MAIN STEM PIPE AFTER LONG-TERM OPERATION[J]. Thermal power generation, 2007, (10): 72-75. DOI： 10.19666/j.rlfd.2007.10.021.

摘要

通过蠕变断裂试验和持久强度试验

研究125 MW机组长期运行后X20Cr Mo WV121钢主蒸汽管的蠕变变形方程和蠕变曲线

并根据持久强度外推法和θ函数法进行剩余寿命评估。结果表明

所研究的主蒸汽管道在以蠕变为主要失效模式下

满足继续安全运行10万h的要求。

Abstract

Through creep rupture test and endurance strength test

the creep deformation equation and creep curve of X20CrMoWV121 steel main steam pipe for a 125 MW unit after long-term operation have been studied

and the residual service life being evaluated on the basis of persistent strength extrapolation method and zero function method.Results show that the main steam pipe can satisfy the requirements of continuous safe operation for 100 000 h under condition of taking creep as the main failure mode.

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