华电技术 ›› 2017, Vol. 39 ›› Issue (5): 52-54.

• 技术交流 • 上一篇    下一篇

某电厂高温再热器出口TP347H材质管段泄漏原因分析

  

  1. 河南恩湃高科集团有限公司, 郑州〓450052
  • 出版日期:2017-05-25

A power plant’s high temperature reheater outlet TP347H material pipeline leakage cause analysis

  1. Henan Enpai Hitech Group Company Limited, Zhengzhou 450052, China
  • Published:2017-05-25

摘要:

对已建成的发电厂进行通流改造、增容改造,具有投资少,见效快等优点,是提高效率、节能降耗、增加电力供应的有效方法之一。锅炉受热面增容后,由于温度和压力等参数的提高,所使用金属材料的性能,需满足更高的要求。某电厂增容改造后,高温再热器出口TP347H材质管段泄漏,通过对该管段现场查看,对断面宏观、化学成分、金相组织、硬度检测等试验后表明,管材在冷作加工后固溶处理不充分,性能下降,是造成管材泄漏的原因。

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Abstract:

To implement flow path and capacity expansion reconstruction to built power plant is high efficient and low cost. This is one of the effective measures to increase efficiency, save energy and increase power supply. After boiler heating surface expansion, better metal material was required due to higher temperature and pressure. After capacity expansion, a power plant’s high temperature reheat outlet TP347H pipe leaked. After site inspection, section macroscopic test, chemical test, metallurgical analysis and hardness test, it was found that the material solution treatment was not sufficient after work hardening, and caused performance reduction and leakage.

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