| 超临界锅炉奥氏体不锈钢管爆漏原因分析及预防控制措施 |
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| 引用本文： | 李文军,杨湘伟,冯斌.超临界锅炉奥氏体不锈钢管爆漏原因分析及预防控制措施[J].电站系统工程,2009,25(3). |
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| 作者姓名： | 李文军 杨湘伟 冯斌 |
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| 作者单位： | 湖南省电力公司试验研究院 |
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| 摘 要： | 某电厂超临界锅炉连续两次发生高温过热器爆管现象,导致机组非计划停运。现场分析爆管的原因是TP-347H钢管发生氧化皮脱落堵塞造成短期超温爆管。通过对奥氏体不锈钢管内氧化皮生成和脱落机理的分析,提出了降低氧化皮生成速度和防止集中脱落的预防控制措施,有效地避免了氧化皮堵塞爆管现象的再次发生,机组运行的安全可靠性大大提高。
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| 关 键 词： | 超临界锅炉 奥氏体不锈钢管 氧化皮 堵塞 爆管 预防控制措施 |
Analysis and Prevention Measures about Leakage of Austenitic SS Tube in Supercritical Boiler |
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| LI Wen-jun,YANG Xiang-wei,FENG Bin.Analysis and Prevention Measures about Leakage of Austenitic SS Tube in Supercritical Boiler[J].Power System Engineering,2009,25(3). |
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| Authors: | LI Wen-jun YANG Xiang-wei FENG Bin |
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| Abstract: | Two high-temperature super-heater tube bursts of supercritical boiler in succession experienced leading to unplanned unit outages. On-site analysis of the burst pipe revealed that the TP-347H steel tube had experienced surface oxidation and surface pealing which caused a temporary blockage and led to excessive temperatures and ultimately burst tube. Through analysis of austenitic stainless steel tube oxide formation and surface pealing, a method to reduce surface oxidation and prevent concentrated pealing w... |
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| Keywords: | supercritical boiler austenitic SS tube oxide skin plugging tube burst prevention and control measures |
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