CAUSE ANALYSIS OF TUBE-BURST IN LOW-TEMPERATURE REHEATER

HU Lin-ming1; LONG Hui-guo2; LI Guang21.Hunan Provincial Electric Power Testing & Research Institute

doi:10.19666/j.rlfd.2007.11.023

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CAUSE ANALYSIS OF TUBE-BURST IN LOW-TEMPERATURE REHEATER

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- CAUSE ANALYSIS OF TUBE-BURST IN LOW-TEMPERATURE REHEATER
- Thermal Power Generation Issue 11, Pages: 84-86(2007)
- 作者机构：
  
  1. 娄底特种设备检验所
  2. 湖南省电力试验研究院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.11.023
  CLC： TK223.32
- Published：2007
- 稿件说明：
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HU Lin-ming1, LONG Hui-guo2, LI Guang21.Hunan Provincial Electric Power Testing & Research Institute. CAUSE ANALYSIS OF TUBE-BURST IN LOW-TEMPERATURE REHEATER[J]. Thermal power generation, 2007, (11): 84-86.
DOI：

HU Lin-ming1, LONG Hui-guo2, LI Guang21.Hunan Provincial Electric Power Testing & Research Institute. CAUSE ANALYSIS OF TUBE-BURST IN LOW-TEMPERATURE REHEATER[J]. Thermal power generation, 2007, (11): 84-86. DOI： 10.19666/j.rlfd.2007.11.023.

摘要

通过宏观检查与显微组织分析

分析了某电厂1021t/h锅炉运行不足1年低温过热器爆管泄漏产生的原因

认为人孔门保温不严

造成人孔门附近管排局部发生严重飞灰磨损

是导致低温再热器爆管的主要原因

对此

提出了相应的处理措施。

Abstract

Through macroscopic examination and microstructure analysis

the causes leading to tube-burst in low-temperature reheater of a 1021 t/h boiler during operation in a period less than one year have been analysed

and disposal measures being put foreard. Result of analysis shows that the main cause resulting in tube-burst of low-temperature reheater is as follows: the thermal insulation of manhole gate is not perfect

making the tube-row near the manhole gate to suffer locally serious fly ash wornout.

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