摘要
针对某核电厂闭式冷却水系统(SRI)热交换器出现的换热钛管外壁异常减薄现象,从原材料化学成分、性能、工作介质、流致振动、微动损伤等方面进行研究分析。认定其换热钛管及折流杆因流体诱发振动,相互之间碰撞摩擦,以及局部发生微动损伤是换热管失效的主要原因。提出一系列针对性的建议,其成果对于核电热交换器在海水环境中的有效防护和安全运行有借鉴意义。
Considering the abnormal thickness reduction of the titanium heat transfer tubes in some SRI heat exchangers of a nuclear power plant, the chemical composition of raw material, performance, working medium, flow induced vibration and fretting damage are studied It is found that the primary causes for the failure are the flow induced vibration between tubes and baffle rod, and the fretting damage. A series of specific countermeasures is provided. The achievements obtained can provide as an instructive reference to ensure the effective protection and safe operation of heat exchangers running under the circumstance of seawater in nuclear power plants.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2016年第5期97-101,共5页
Nuclear Power Engineering
关键词
核电厂
热交换器
钛管
失效分析
Nuclear power plant
Heat exchanger
Titanium tube
Failure analysis
