Crack detection and structure optimization for fillet welds in nozzle stubs of deaerator spray pipes

MA Yichao; MENG Yongle; FAN Zhidong; ZHANG Zhibo; NIU Kun; MA Jianmin; YAO Bingyin

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Crack detection and structure optimization for fillet welds in nozzle stubs of deaerator spray pipes

Thermal Power Generation Issue 4, (2017)

更新时间：2025-09-28

- Crack detection and structure optimization for fillet welds in nozzle stubs of deaerator spray pipes
- 作者机构：
  
  西安热工研究院有限公司,陕西,西安,710054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG115
- Published Online：26 April 2017，
  
  Published：2017
- 稿件说明：
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MA Yichao, MENG Yongle, FAN Zhidong, et al. Crack detection and structure optimization for fillet welds in nozzle stubs of deaerator spray pipes[J]. Thermal Power Generation, 2017, (4).
DOI：

MA Yichao, MENG Yongle, FAN Zhidong, et al. Crack detection and structure optimization for fillet welds in nozzle stubs of deaerator spray pipes[J]. Thermal Power Generation, 2017, (4). DOI：

摘要

某电厂自2007年投产以来，除氧器喷淋管角焊缝运行中多次发生泄漏，虽多次对该位置进行补焊修复，但仍无法根除该缺陷，给电厂的安全运行造成了很大的隐患。为了提高缺陷的检出率、防止此类事故的频繁产生，提出采用磁粉检测与超声爬波检测相结合的方法，并通过磁记忆检测技术对缺陷的原因进行分析，然后通过加装膨胀节对除氧器喷淋管的结构进行优化，降低喷淋管支管所承受的应力。采用这2种检测方法及对除氧器喷淋管结构进行优化改造后，基本解决了喷淋管管座角焊缝经常泄漏的问题，可为其他电厂同类问题的解决提供借鉴。

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