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[1]袁小会,蔡逸飞*.凝汽器钛管断裂失效分析[J].武汉工程大学学报,2014,(03):53-57.[doi:103969/jissn16742869201403011]
　YUAN Xiao hui,CAI Yi fei.Failure analysis on titanium tubes in condenser[J].Journal of Wuhan Institute of Technology,2014,(03):53-57.[doi:103969/jissn16742869201403011]
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凝汽器钛管断裂失效分析(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年03期
页码:
53-57
栏目:
机电与信息工程
出版日期:
2014-03-31

文章信息/Info

Title:
Failure analysis on titanium tubes in condenser
文章编号:
16742869(2014)03005305
作者:
袁小会1; 蔡逸飞2*
1.武汉软件工程职业学院机械工程学院,湖北 武汉 430205；2. ALSTOM （武汉）工程技术有限公司，湖北 武汉 430060
Author(s):
YUAN Xiaohui1; CAI Yifei2
1.School of Mechanical Engineering,Wuhan Vocational College of Software and Engineering,Wuhan 430205,China;2.ALSTOM (Wuhan) Engineering & Technology limited company,Wuhan 430060,China
关键词:
凝汽器钛管; 微裂纹; 疲劳腐蚀; 失效分析
Keywords:
condenser titanium tubes; microcracks; corrosion fatigue; failure analysis
分类号:
TL353+.13
DOI:
103969/jissn16742869201403011
文献标志码:
A
摘要:
核电作为一种高效、清洁可循环利用的能源显得尤为重要.核电机组的安全运行备受关注.针对国内某核电机组凝汽器运行中钛管断裂现象进行了失效分析，通过光学显微镜，三维体式显微镜，扫描电镜，对钛管失效部位的化学成分与显微组织及断裂处的微观形貌进行了表征，并结合类似设备失效分析的经验，提出了造成材料失效的因素是管内壁的疲劳腐蚀，对苛刻工况下的凝汽器管道维护和保养提供了参考：（1）加强管材的加工质量控制，消除原始材料缺陷，在运行过程中，重点做好顶部管束的质量监控；（2）凝汽器运行前排空水室顶部的空气，减少启动阶段蒸汽的冲击振动；（3）加强凝汽器的稳定运行控制，减少变工况运行.
Abstract:
Nuclear power as a kind of efficient, clean and recyclable energy becomes more and more particularly important.The safe operation of nuclear power plants attracted much highly attention.A failure analysis on the titanium tubes rupture of a nuclear power plant was studied in this article.In order to ascertain the failure causes,chemical composition and microscopic structure of the failed tubes,were carried out by using optical microscope,threedimensional stereo microscope and scanning electron microscope.Combined with the similar equipment failure analysis experience,this article demonstrated the factors causing the material failure is corrosion fatigue on the tube inner surfaces,and provided reference maintenance for the condenser tubes under harsh working condition:(1)Strengthen the quality control process for the titanium tubes manufacture,eliminate the defects in tubes raw material,and focus quality control on the top of the bundle; (2)Draining and emptying the air at the top of the water boxes to reduce the vibration during the condenser startup phase; (3) Improve the stability operation control of the condenser,reduce the variable running condition.

参考文献/References:

［1］YANG Z G,GONG Y,YUAN J Z.Failure analysis of leakage on titanium tubes within heat exchangers in a nuclear power plant,Part II:Mechanical degradation［J］.Materials and Corrosion,2012,63(1):1828.［2］杨振国.核电装置换热器的失效分析及其解决对策［J］.金属热处理,2007,32(zl):2835.YANG ZhenGuo.Failure analysis and countermeasure of heat exchangers in nuclear power facility［J］.Heat Treatment of Metals,2007,32(zl):2835.（in Chinese)［3］陈明辉,厉日竹,何晓艳,等.一体化核反应堆套管管束式换热器设计与试验［J］.清华大学学报:自然科学版,2006,46(12):2933.CHEN Minghui,LI Rizhu,HE Xiaoyan,et al.Design and tests of a doubletube bundle heat exchanger for an integrated nuclear reactor［J］.Journal of Tsinghua University (Science and Technology),2006,46(12):2933.（in Chinese)［4］GONG Y,YAO C,YANG Z G,et al.Acidic/Caustic alternating corrosion on carbon steel pipes in heat exchanger of ethylene plan［J］. Materials and Corrosion,2011,62(10):967978.［5］陈锡雄.防止海水腐蚀的措施与效果［J］.电力建设,2001,22(5):3436.CHEN Xixiong.Measures to protect corrosion of seawater and results［J］.Electric Power Construction,2001,22(5):3436.（in Chinese)［6］GB/T 3620.12007钛及钛合金牌号和化学成分［S］.北京：中国标准出版社，2007.GB/T 3620.12007 Designation and composition of titanium and titanium Alloys ［S］.Beijing:China Standards Publishing House,2007.（in Chinese)［7］ASME SEC II B SB3382001. Standard specification for seamless and welded titanium and titanium alloy tubes for condensers and heat exchangers.ASTM B33899［S］.2001.

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备注/Memo

备注/Memo:
收稿日期：20140222基金项目：湖北省教育厅科研项目（B20128803）作者简介：袁小会(1980)，女，湖北钟祥人，讲师，工程师，硕士.研究方向：机械设计.*通信联系人.
更新日期/Last Update: 2014-04-18