Characteristic flow area based fault diagnosis for flow passage fouling of steam turbines

BING Hankun1; DING Changfu1; LU Shengyang2; Zhang Weiguang1 1.School of Energy

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Characteristic flow area based fault diagnosis for flow passage fouling of steam turbines

Thermal Power Generation Vol. 42, Issue 2, Pages: 92-94(2013)

更新时间：2025-09-28

- Characteristic flow area based fault diagnosis for flow passage fouling of steam turbines
- 作者机构：
  
  1. 华北电力大学能源动力与机械工程学院
  2. 河北省电力研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM311
- Published：2013
- 稿件说明：
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BING Hankun1, DING Changfu1, LU Shengyang2, et al. Characteristic flow area based fault diagnosis for flow passage fouling of steam turbines[J]. Thermal Power Generation, 2013, 42(2): 92-94.
DOI：

BING Hankun1, DING Changfu1, LU Shengyang2, et al. Characteristic flow area based fault diagnosis for flow passage fouling of steam turbines[J]. Thermal Power Generation, 2013, 42(2): 92-94. DOI：

摘要

基于汽轮机特征通流面积(CFA)概念

给出了特征通流面积及其变化率的计算公式

并采用该公式对某亚临界300MW机组大修前、后汽轮机部分级组的特征通流面积及其变化率进行了计算

确定该汽轮机中压缸通流部分发生结垢。该结果与实际情况相符

表明汽轮机特征通流面积可以作为汽轮机通流部分故障诊断的依据。

Abstract

Based on the conception of characteristic flow area(CFA) of steam turbines

the formulas of the CFA and its change rate were derived and adopted to conduct calculation for turbine before and after major overhaul in a sub-critical 300 MW unit.Results indicated that fouling occurred in flow passage of the intermediate pressure cylinder in this turbine

which was in accordance with the actual situation.Therefore

the CFA can be used as the basis for fault diagnosis for flow passage of turbines.

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