| 600MW超临界锅炉过热器爆管原因及改进措施 |
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| 引用本文： | 祝毅,杨宁,徐耀良,陈元良. 600MW超临界锅炉过热器爆管原因及改进措施[J]. 华东电力, 2011, 0(8) |
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| 作者姓名： | 祝毅 杨宁 徐耀良 陈元良 |
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| 作者单位： | 上海电力学院;上海吴泾第二发电有限责任公司; |
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| 基金项目： | 上海市教委重点学科建设资助项目(J51301)~~ |
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| 摘 要： | 通过对某600 MW超临界锅炉末级过热器的爆管进行综合分析,确定爆管属于超临界锅炉管道短时超温爆管。锅炉管壁严重氧化和大量脱落造成堵塞,是锅炉爆管的主要原因。为此提出了一些有效的防范措施,包括严禁锅炉超温运行,加强水质管理以及及时冲洗沉积的氧化皮等,并增加锅炉过热器管壁测点,尽可能全面地反映管壁温度状况。采用这些措施后锅炉的运行状况良好。
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| 关 键 词： | 超临界锅炉 爆管 短期过热 管壁测点 氧化皮 |
Cause Analysis and Improvement Measures on Heater Tube Cracking of 600MW Supercritical Boiler |
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| ZHU Yi,YANG Ning,XU Yao-liang,CHEN Yuan-liang. Cause Analysis and Improvement Measures on Heater Tube Cracking of 600MW Supercritical Boiler[J]. East China Electric Power, 2011, 0(8) |
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| Authors: | ZHU Yi YANG Ning XU Yao-liang CHEN Yuan-liang |
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| Affiliation: | ZHU Yi1,YANG Ning1,XU Yao-liang1,CHEN Yuan-liang2(1.Shanghai University of Electric Power,Shanghai 200090,China,2.Shanghai Wujin 2nd Power Supply Co.,LTD.,Shanghai 200241,China) |
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| Abstract: | Through comprehensive analysis on the tubes cracking accident that happened at final superheater of 600 MW supercritical boiler,it is concluded that the accident is caused by short-term overheating tube rupture.Oxide scale falling off leading to series oxidation of tube wall and stoppage is the main reason of tube rupture.Several effective countermeasures for this accident,such as no boiler over-temperature operation,strengthening the management of water quality,flushing the deposit of oxide scale promptly,... |
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| Keywords: | supercritical boiler tube cracking short-term overheat tube wall measuring point Oxide scale |
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