CALCULATION OF STEAM LEAKAGE RATE FROM BALANCING DISC IN HP AND MP CYLINDERS AND ITS ERROR ANALYSIS

LI Gang1; XU Jianqun1; CAO Zuqing1; ZHU Xiaoling2; SHI Yongfeng31.College of Energy and Environment

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CALCULATION OF STEAM LEAKAGE RATE FROM BALANCING DISC IN HP AND MP CYLINDERS AND ITS ERROR ANALYSIS

Thermal Power Generation Vol. 39, Issue 12, Pages: 35-39(2010)

更新时间：2025-09-28

- CALCULATION OF STEAM LEAKAGE RATE FROM BALANCING DISC IN HP AND MP CYLINDERS AND ITS ERROR ANALYSIS
- 作者机构：
  
  1. 东南大学能源与环境学院
  2. 西安热工研究院有限公司
  3. 华电电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK262
- Published：2010
- 稿件说明：
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LI Gang1, XU Jianqun1, CAO Zuqing1, et al. CALCULATION OF STEAM LEAKAGE RATE FROM BALANCING DISC IN HP AND MP CYLINDERS AND ITS ERROR ANALYSIS[J]. Thermal Power Generation, 2010, 39(12): 35-39.
DOI：

LI Gang1, XU Jianqun1, CAO Zuqing1, et al. CALCULATION OF STEAM LEAKAGE RATE FROM BALANCING DISC IN HP AND MP CYLINDERS AND ITS ERROR ANALYSIS[J]. Thermal Power Generation, 2010, 39(12): 35-39. DOI：

摘要

针对汽轮机高中压缸平衡盘汽封漏汽率计算

引入变汽温法和数值计算法

建立误差分析数学模型。在某台超临界600 MW汽轮机高中压缸平衡盘汽封漏汽率试验中

应用变汽温法及数值计算法所得结果基本一致

说明数值计算法可准确估算高中压缸平衡盘汽封漏汽率。基于误差分析数学模型计算各测量参数误差对高中压缸平衡盘汽封漏汽率精度的影响

结果表明测量参数中

对汽封漏汽率精度影响最大的是再热蒸汽温度和中压缸排汽温度。

Abstract

Directing against the calculation of steam leakage rate from steam seal of the balancing disc in HP and MP cylinders of the steam turbine

a mathematic model for error analysis has been established by introducing the steam-temperaturing variating method and the numerical calculation method.In the test of steam leakage rate from steam seal of the balancing disc in HP and MP cylinders of one supercritical 600 MW steam turbine

the results obtained from applying above-mentioned two methods are basically identical

it shows that the numerical calculation method can accurately estimate the said steam leakage rate.Based on the mathematical model error analysis

the influence of error in each measured parameter upon the precision of said steam leakage rate has been calculated

results show that the temperature of reheated steam and the temperature of exhausted steam from MP cylinder in the said measured parameters have the greatest influence upon the precision of steam leakage rate from the

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