汽轮机转子热稳定试验方法探究

Study on Method of Thermal Stability Test for Steam Turbine Rotors

阐述了汽轮机转子热稳定试验的原理,并针对国内外常用的4种热稳定试验的评判标准,分析了各种标准及对应数据处理方法的物理意义,探讨了各种方法的优劣及误差来源,并以某600 MW机组高中压转子热稳定试验原始采集数据为例,按这4种评判标准对应的数据处理方法进行了数据计算,分析了汽轮机转子热稳定试验实施过程中影响试验结果准确性的因素及其对评判方法的影响。

An introduction is presented to the principle of thermal stability test for steam turbine rotors, including an analysis on the physical meanings of data processing method prescribed in 4 evaluation criteria commonly used domestically and overseas, while their advantages and disadvantages as well as corresponding error sources were explored. Taking the thermal stability test for a 600 MW HP/IP steam turbine rotor as an example, the original data were processed respectively with the methods concerned in above four criteria, based on which, factors influencing the accuracy of each test method were analyzed.