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。
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
出处
《热力发电》
CAS
北大核心
2010年第12期35-39,共5页
Thermal Power Generation
关键词
超临界600MW机组
汽轮机
高中压缸
平衡盘汽封
漏汽
变汽温法
数值计算法
热力性能
supercritical 600 MW unit
steam turbine
HP and MP cylinders
steam seal of the balancing disc
steam leakage
steam-temperature variating method
numerical calculation method
thermodynamic behavior
