锅炉技术2024，Vol.55Issue(4)：62-66,72,6.
钢球堵塞引起S30432屏式过热器爆管的失效特征分析
Failure Characteristics Analysis of S30432 Platen Superheater Tube Caused by Steel Ball Blocking
摘要
Abstract
Taking the platen superheater tube burst of a 600 MW ultra supercritical boiler caused by overheating creep due to steel ball blockage in the trial operation stage as an example,through macroscopic inspection,size measurement,chemical composition analysis,mechanical property analysis,metallographic analysis,Vickers hardness test and scanning electron microscope observation,and comparison with adjacent tubes,the characteristics of S30432 tube burst failure caused by steel ball blockage are obtained.The results show that the S30432 platen superheater tube plugged with steel ball in the ball passing test has obvious characteristics in the aspects of pipe diameter,wall thickness,creep holes,creep cracks and aging degree;All the test results of the leaking tube except the bursting port meet the requirements of the standard for new tubes,but its material state is obviously worse than that of adjacent tubes.关键词
超超临界锅炉/屏式过热器/S30432/钢球/爆管/失效特征Key words
ultra supercritical boiler/platen superheater/S30432/steel ball/tube burst/failure characteristics分类
能源科技引用本文复制引用
徐荣田,史志刚,张红军,秦永亮,杨哲一,刘雪峰,何晓东..钢球堵塞引起S30432屏式过热器爆管的失效特征分析[J].锅炉技术,2024,55(4):62-66,72,6.基金项目
中国华能集团有限公司科技项目(HNBZ21-H007) （HNBZ21-H007）
