Cause analysis on tube burst of water wall on a DG440/13.7-Ⅱ2 CFB boiler

LI Yimin1; SHI Zhigang2; XU Xianglong1; CHEN Huijie1 1.Shanghai Datun Power Station Co.

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Cause analysis on tube burst of water wall on a DG440/13.7-Ⅱ2 CFB boiler

Thermal Power Generation Vol. 42, Issue 2, Pages: 82-85(2013)

更新时间：2025-09-28

- Cause analysis on tube burst of water wall on a DG440/13.7-Ⅱ2 CFB boiler
- 作者机构：
  
  1. 上海大屯能源股份有限公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.31;TK227
- Published：2013
- 稿件说明：
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LI Yimin1, SHI Zhigang2, XU Xianglong1, et al. Cause analysis on tube burst of water wall on a DG440/13.7-Ⅱ2 CFB boiler[J]. Thermal Power Generation, 2013, 42(2): 82-85.
DOI：

LI Yimin1, SHI Zhigang2, XU Xianglong1, et al. Cause analysis on tube burst of water wall on a DG440/13.7-Ⅱ2 CFB boiler[J]. Thermal Power Generation, 2013, 42(2): 82-85. DOI：

摘要

通过爆管管样的宏观检查、材质检验、垢层分析、断口分析以及综合分析等对某DG440/13.7-Ⅱ2型循环流化床(CFB)锅炉水冷壁爆管的原因进行分析。结果表明

该水冷壁爆管类型属于氢损伤

主要由凝汽器管泄漏引起炉水品质不合格以及锅炉化学清洗不及时导致。对此

提出采用高频超声波无损检测普查和金相抽查相结合的方法定期排查更换已损伤管段

加强化学监督

严格控制炉水品质等防范措施。

Abstract

Tube burst occurred on water wall of a DG440/13.7-Ⅱ2 CFB boiler in a power plant.To find out the reason

macroscopic examination

material test

fouling layer inspection

fracture analysis and comprehensive investigation were conducted for the burst tubes.The results showed that

this type of tube burst was hydrogen damage

which was mainly caused by unqualified boiler water(resulting from condenser tube leakage) and untimely chemical cleaning of the boiler.Thus

the improvement measures were put forward.

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