| 超临界机组末级过热器管泄漏事故原因分析 |
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| 引用本文： | 李 亮,包艳蓉,杨 浩,马利立,马 瑞.超临界机组末级过热器管泄漏事故原因分析[J].防灾减灾工程学报,2016(2):68-72. |
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| 作者姓名： | 李 亮 包艳蓉 杨 浩 马利立 马 瑞 |
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| 作者单位： | 宁夏电力能源科技有限公司, 宁夏 银川 750011 |
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| 摘 要： | 针对某电厂末级过热器受热面管在运行过程中发生的泄漏事故,通过对末级过热器管进行外观检查、割管检查、光谱检测、力学性能及金相组织检测,找出事故原因,提出改进方案。分析结果表明:末级过热器管长期过热造成材料微观组织老化是导致其泄漏的主要原因。
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| 关 键 词： | 末级过热器 泄漏 长期过热 微观组织老化 |
Cause analysis on leakage accident of final stage superheater tube in the supercritical power unit |
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| LI Liang,BAO Yanrong,YANG Hao,MA Lili,MA Rui.Cause analysis on leakage accident of final stage superheater tube in the supercritical power unit[J].Journal of Disaster Prevent and Mitigation Eng,2016(2):68-72. |
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| Authors: | LI Liang BAO Yanrong YANG Hao MA Lili MA Rui |
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| Affiliation: | Ningxia Power Energy Resource Science & Technology Co ,Ltd ,Yinchuan Ningxia 750011 ,China |
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| Abstract: | Aiming at the leakage accident of final -stage superheater tube heating surface in apower plant,through exterior inspection,tubes cutting inspection,spectral detection,mechanicalproperty test and metallographic test finds out the accident cause,puts forward improvement scheme.The analysis result shows that the main causes of final stage superheater tubes leakage is that longterm overheating result in the tube material microstructure aging. |
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