４４０ｔ／ｈ锅炉对流过热器管失效分析

华电技术 ›› 2009, Vol. 31 ›› Issue (4): 13-15.

４４０ｔ／ｈ锅炉对流过热器管失效分析

文鸣明^1，2

１．广东粤电大埔发电厂，广东梅州　５１４２６５；２．华南理工大学电力学院，广东广州　５１０６４１

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-04-25 发布日期:2009-04-25

Failure analysis on the pipe of convection surperheater in 440t/h boiler

WEN Mingming^1,2

1.Dabu Power Station Plant,Guangdong Yudean Group Corporation Limited, Meizhou 514265, China；2.Electric Power College of South China University of Technology, Guangzhou 510641, China

Received:1900-01-01 Revised:1900-01-01 Online:2009-04-25 Published:2009-04-25

摘要/Abstract

摘要： 简要介绍了４４０ｔ锅炉系统及对流过热器结构，对对流过热器管失效管样进行了测量分析，认为引起对流过热器管爆漏的主要原因是停炉启动后管内被带入大量氧化皮及以前检修过程中遗留的金属物在管内形成堵塞，从而发生短期过热爆管，最后提出了具体的预防爆管的建议。

关键词: 对流过热器, 减温器, 氧化皮, 短期过热

Abstract: The convection surperheater′s structure and 440t/h boiler system were introduced, metering and analyses were conducted for the sample of failure pipe. It was considered that the superheater blast was caused by the blockages of oxide skins, which were taken into pipes during unit startup and shutdown, and metal residues, which were left when maintenance, the blockage lead to overheating and then blasting. At last, some concrete suggestions for prevention pipe blast were proposed.

Key words: convection surperheater, desuperheater, oxide skin, short-term over-heat

文鸣明;. ４４０ｔ／ｈ锅炉对流过热器管失效分析[J]. 华电技术, 2009, 31(4): 13-15.

WEN Mingming;. Failure analysis on the pipe of convection surperheater in 440t/h boiler[J]. Huadian Technology, 2009, 31(4): 13-15.

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