超声波检测汽轮机中水蒸气湿度方法的探讨

Exploratory Study of an Ultrasonic Method for Detecting Steam Wetness in a Steam Turbine

理论上探讨了使用超声波检测湿蒸气两相流湿度的方法,并得到了精确的解析式;使用脉冲时差法测定两相流中的声速,简便、快捷、精确。对超声湿度检测计的组成、工作原理作了理论上的预测。

The use of an ultrasonic method for detecting the two phase flow wetness of wet steam is theoretically explored with an accurate analytical expression being obtained. The determination of sonic speed in a two phase flow by the use of a pulse time difference method features simplicity, rapidity and precision. The composition and operating principles of a wetness detection ultrasonic device are predicted from an theoretical perspective.