FAILURE ANALYSIS OF OVERTEMPERATURE BURST ON DRAIN PIPELINE FROM HIGHPRESSURE CYLINDER

LIANG Jun; XU Ya-taoShenhua Guohua(Beijing)Electric Power Research Institute

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FAILURE ANALYSIS OF OVERTEMPERATURE BURST ON DRAIN PIPELINE FROM HIGHPRESSURE CYLINDER

更新时间：2025-09-28

- FAILURE ANALYSIS OF OVERTEMPERATURE BURST ON DRAIN PIPELINE FROM HIGHPRESSURE CYLINDER
- Thermal Power Generation Vol. 38, Issue 8, Pages: 129-132(2009)
- 作者机构：
  
  神华国华(北京)电力研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.72
- Published：2009
- 稿件说明：
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LIANG Jun, XU Ya-taoShenhua Guohua(Beijing)Electric Power Research Institute. FAILURE ANALYSIS OF OVERTEMPERATURE BURST ON DRAIN PIPELINE FROM HIGHPRESSURE CYLINDER[J]. Thermal power generation, 2009, 38(8): 129-132.
DOI：

LIANG Jun, XU Ya-taoShenhua Guohua(Beijing)Electric Power Research Institute. FAILURE ANALYSIS OF OVERTEMPERATURE BURST ON DRAIN PIPELINE FROM HIGHPRESSURE CYLINDER[J]. Thermal power generation, 2009, 38(8): 129-132. DOI：

摘要

通过对某发电公司300 MW机组汽轮机高压缸疏水管道超温爆破的试验分析及理论计算

认为高压缸疏水管道的特殊结构形成超音速气流摩擦发热

其发热效果远大于对流换热效果

是导致管道超温爆破的主要原因。相关试验和计算理论为防止这种特殊结构的管道爆破提供了依据。

Abstract

Through test analysis and theoritical calculation for over-temperature burst of drain pipeline from high-pressure(HP) cylinder of the steam turbine for 300 MW unit in one Power Generation Co Ltd

the causes leading to a special phenomenon

i.e.the severe over-temperature burst occurred on the drain pipeline under condition of the exhaust steam temperatrue from HP cylinder of the steam turbine was far lower than the service temperature of 12Cr1MoV steel used in the hydraulic pipeline

has been explained.The effect of rubbing heat due to supersonic steam flow resulted from special structure of the drain pipeline from HP cylinder is far larger than the effect of convective heat exchange

finally resulting in over-temperature burst of the pipeline.The related tests and calculation theory provide basis for preventing this kind of pipeline burst due to its special structure.

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