风电水冷空气散热器内部腐蚀穿孔失效分析
|
摘要
风电水冷系统中空气散热器是IGBT散热的核心设备,随着水冷系统长期投入运行,逐渐出现腐蚀穿孔漏水问题,不但危害到风电机组的正常运行,而且造成巨大的经济损失,本文通过扫描电镜、能谱仪、金相显微镜等方法对某风电水冷系统材质为3003铝合金的空气散热器穿孔漏水失效样品进行了分析。结果表明,散热器失效的主要原因是冷却液中含有微量的具有一定腐蚀性的硫酸盐和碳酸盐,导致铝制散热器内部水道积盐腐蚀穿孔漏水而失效。
Wind cooling system in air is IGBT radiator radiator core,with water cooling system put into operation for a long time,the corrosion perforation leakage problems gradually,not only harm to the normal operation of the wind turbines,and cause huge economic loss,this article through scanning electron microscope,energy spectrometer,metallographic microscope and other methods of a wind cooling system is made of 3003 aluminum alloy air leaking radiator perforation failure samples are analyzed. The results show that the main reason for the failure of the radiators is that there are some corrosive sulfate and carbonate in the coolant.
Wind cooling system in air is IGBT radiator radiator core,with water cooling system put into operation for a long time,the corrosion perforation leakage problems gradually,not only harm to the normal operation of the wind turbines,and cause huge economic loss,this article through scanning electron microscope,energy spectrometer,metallographic microscope and other methods of a wind cooling system is made of 3003 aluminum alloy air leaking radiator perforation failure samples are analyzed. The results show that the main reason for the failure of the radiators is that there are some corrosive sulfate and carbonate in the coolant.
引文
[1]黄丽荣,汤宏智.汽车散热器点蚀穿孔失效分析[J].热处理技术与装备,2009,30(2):48-49.
[2]何晓东,朱弘源,肖政兵,等. 3003铝合金腐蚀机理的电子理论研究[J].铝加工,2013(4):18-23.
[3]周丽霞.铝合金在汽车冷却液中的腐蚀机理与防护技术研究[D].上海:上海电力学院,2013.
[4]金星.发动机用铝硅系合金及其焊件的腐蚀机理与防护技术研究[D].上海:上海电力学院,2011.
[2]何晓东,朱弘源,肖政兵,等. 3003铝合金腐蚀机理的电子理论研究[J].铝加工,2013(4):18-23.
[3]周丽霞.铝合金在汽车冷却液中的腐蚀机理与防护技术研究[D].上海:上海电力学院,2013.
[4]金星.发动机用铝硅系合金及其焊件的腐蚀机理与防护技术研究[D].上海:上海电力学院,2011.