理化检验-物理分册2026，Vol.62Issue(6)：46-55,10.DOI:10.11973/lhjy-wl250263
洗涤塔液位计接管开裂原因
Reasons for cracking of the connection pipe of the washing tower liquid level gauge
李琪 1王梦琪 1宋双官 1王志鹏 2许可 3蔺俊龙 1田利1
作者信息
- 1. 机械工业上海蓝亚石化设备检测所有限公司,上海 201620
- 2. 中国石油吉林石化公司,吉林 132000
- 3. 中石油云南石化有限公司,昆明 650000
- 折叠
摘要
Abstract
A crack defect appeared on the connecting pipe of the liquid level gauge of the coal-to-methanol washing tower and the inner wall of the shell below it in a certain coal chemical factory.The reasons for the cracking of the connecting pipe were analyzed using macroscopic observation,penetration testing,chemical composition analysis,metallographic examination,scanning electron microscopy and energy dispersive spectroscopy analysis,mechanical property testing.The results show that during the operation of the washing tower,the entry of circulating water caused a decrease in temperature at the bottom of the connecting pipe and the inner wall of the shell below the connecting pipe.When the water supply was stopped,the temperature of the connecting pipe and the shell rose,causing cyclic thermal stress on the connecting pipe,ultimately leading to multi-source thermal fatigue cracking of the connecting pipe.关键词
煤制甲醇洗涤塔/接管/多源热疲劳开裂/显微组织/热应力Key words
coal-to-methanol washing tower/connection pipe/multi-source thermal fatigue cracking/microstructure/thermal stress分类
机械制造引用本文复制引用
李琪,王梦琪,宋双官,王志鹏,许可,蔺俊龙,田利..洗涤塔液位计接管开裂原因[J].理化检验-物理分册,2026,62(6):46-55,10.
