CAUSE ANALYSIS OF DESUPERHEATER FRACTURE FOR BOILER OF 600 MW UNIT

LIU Feng; YAN Kai-ping; TONG Ya-feng; JIA Ying-fan(Datang Panshan Power Generation Co Ltd

doi:10.19666/j.rlfd.2007.05.026

English

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CAUSE ANALYSIS OF DESUPERHEATER FRACTURE FOR BOILER OF 600 MW UNIT

Thermal Power Generation Issue 5, Pages: 87-88(2007)

更新时间：2025-09-28

- CAUSE ANALYSIS OF DESUPERHEATER FRACTURE FOR BOILER OF 600 MW UNIT
- 作者机构：
  
  大唐盘山发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.05.026
  CLC： TK223
- Published：2007
- 稿件说明：
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LIU Feng, YAN Kai-ping, TONG Ya-feng, et al. CAUSE ANALYSIS OF DESUPERHEATER FRACTURE FOR BOILER OF 600 MW UNIT[J]. Thermal Power Generation, 2007, (5): 87-88.
DOI：

LIU Feng, YAN Kai-ping, TONG Ya-feng, et al. CAUSE ANALYSIS OF DESUPERHEATER FRACTURE FOR BOILER OF 600 MW UNIT[J]. Thermal Power Generation, 2007, (5): 87-88. DOI： 10.19666/j.rlfd.2007.05.026.

摘要

分析了某电厂600 MW机组锅炉过热器减温器断裂的原因

认为其主要是减温水引进管与喷雾管壁温温差大、减温器入口管座与入口管的焊接缺陷以及喷雾管与入口管异种钢焊接存在弊端等。对此

提出了更换材质、减少壁厚、改进焊接和检验方法等措施

实施后

没有再出现减温水管道振动及其它异常现象

设备运行稳定。

Abstract

The causes leading to desuperheater fracture of boiler's superheater for 600 MW unit of one power plant have been analysed

it is believed that the main causes are as follows: large temperature difference between wall temperature of leading-in pipe and that of atomizing tube for the desuperheating water

welding defects of the inlet tube socket with the inlet tube of desuperheater

as well as malpractice existing in weldjoint of different steels for the atomizing tube and the inlet tube etc..For these

measures such as changing the quality of materials

decreasing the thickness of tube-wall

improving the welding technology and the detecting method etc.have been put forward.After implementation

vibration and other abnormalities of the desuperheating water pipeline have never occurred again

equipements are in stable operation.

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