摘要
发展大容量、高参数、高效的超超临界机组有利于提高现有能源利用率、缓解环境压力、实现绿色发电。这一趋势对高温蒸汽管道设计、制造、使用和可靠性评估提出了新的挑战。本文概述了针对高参数火电机组蒸汽管道的焊接接头早期失效、新材料选择和应用、含缺陷焊接部件寿命评估、残余应力以及拘束效应的影响、在役部件材料性能测试和可靠性评估以及在役部件延寿理论等,高温结构完整性评估领域的近期研究进展及工程实践,并展望了这一领域未来研究发展方向和重要突破点。
Developing Ultra Super Critical（USC） power plants with high capacity, high serving temperature and pressure can be beneficial to improving the fossil energy efficiency, reducing the emission and achieving green power generation. Hence, these New challenges are emerging in the structural integrity technology for high temperature components in USC power plants, which involve in the design, manufacture, operation and assessment processes of high temperature installations. In the present paper, the latest developments of high temperature structural integrity for dealing with the premature failure of welded joint, the application of new heat resistant materials, the assessment for the component with defects, the role of the residual stress and the loss of the constraint, the assessment of the in-service component and the theory and methods of extend service life are reviewed. Furthermore, the suggestions for the improvement of current design and assessment methods are provided.
出处
《华东交通大学学报》
2017年第6期1-25,共25页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51475326)
关键词
高参数超超临界机组
高温结构完整性
寿命评估
在役部件
性能测试
high capacity USC power plant
high temperature integrity
life assessment
in-service component
property evaluation
作者简介
徐连勇（1975-），教授，博士，博士生导师，主要研究方向为焊接力学及结构设计与制造。教育部新世纪优秀人才，天津市“131”创新型人才培养工程第一层次人选。发表SCI论文70余篇，获天津市科技进步一等奖1项，教育部科技进步一等奖1项。
