| 超临界机组锅炉高温再热器爆管分析 |
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| 引用本文： | 张珣. 超临界机组锅炉高温再热器爆管分析[J]. 安徽电气工程职业技术学院学报, 2010, 15(1): 87-89. DOI: 10.3969/j.issn.1672-9706.2010.01.021 |
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| 作者姓名： | 张珣 |
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| 作者单位： | 安徽省电力科学研究院,安徽,合肥,230022 |
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| 摘 要： | 某发电公司1900吨锅炉高温再热器(TP347H)进口段于168试运行期间爆破,爆口张开很大成喇叭状,并从喇叭口中部断成二截。笔者通过宏观检查、化学成份分析、金相检测等项目试验分析,得出:某发电公司高温再热器爆管原因为长时加短时超温爆管,为异物堵塞造成。并介绍了长时超温即蠕变断裂机理——应力集中断裂机理。
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| 关 键 词： | 超临界机组 锅炉高温再热器 长时超温 |
Analysis on Tube Burst in Boiler High-temperature Reheater of Supercritical Unit |
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| Abstract: | The inducer of a 1900t boiler high-temperature reheater(TP347H) burst in supercritical unit of a power plant during 168 pre-operation,the site of burst was trumpet-shaped and the trumpet broke into two pieces form center.Some conclusions are achieved by some experiments such as: macro inspection,chemical constitution analysis and metallographic detection,etc.They are as follows: long-term and short-term over-temperature and foreign body obstruction are the reasons of bursting.And the mechanism of creep fracture and stress concentration fracture is long-term overtemperature. |
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| Keywords: | supercritical unit boiler high-temperature reheater long-term overtemperature |
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