某制冷设备热交换器失效案例分析  

Failure Case Analysis of Heat Exchanger of Refrigeration Equipment

作　　者：朱建国 李峰 卫能 涂志健 曾恒[2] ZHU Jianguo;LI Feng;WEI Neng;TU Zhijian;ZENG Heng(Wuhu Ceprei Robot Industry Technology Institute Co.,Ltd.,Wuhu 241000,China;School of Mechanical Engineering,Anhui Polytechnic University,Wuhu 241000,China)

机构地区：[1]芜湖赛宝机器人产业技术研究院有限公司,安徽芜湖241000 [2]安徽工程大学机械工程学院,安徽芜湖241000

出　　处：《电子产品可靠性与环境试验》2024年第3期8-11,共4页Electronic Product Reliability and Environmental Testing

摘　　要：针对制冷设备热交换器的失效问题进行了研究。通过打压试验发现样品的下直管与弯管焊接处位置附近存在渗漏;低倍检查看出管内表面遍布大量的不规则孔洞缺陷;电镜观察发现结晶产物;能谱分析看出有腐蚀产物覆盖位置相较无明显腐蚀产物覆盖位置C、 O元素含量都有明显增高[1]。结合样件实际使用情况,综合分析得出热交换器的失效是腐蚀导致的,分析了导致失效的具体原因并给出了应对此类失效情况的建议。The failure problem of heat exchanger of refrigeration equipment is studied.Through the pressure testing,it is found that there is leakage near the welding position of the lower straight pipe and the bent pipe of the sample.A large number of irregular hole defects are found on the inner surface of the tube by low power microscopy.The crystalline products are observed by electron microscope.Energy spectrum analysis shows that the content of C and O elements in the area covered by corrosion products is significantly higher than that in the area without obvious corrosion product coverage.Combined with the actual use of the sample,the comprehensive analysis shows that the failure of the heat exchanger is caused by corrosion,the specific reasons for the failure are analyzed and corresponding suggestions to address such failure situations are provided.

关 键 词：热交换器 腐蚀 泄露 失效分析 

分 类 号：TB657[一般工业技术—制冷工程]