应用光学法饱和蒸汽湿度仪测量汽轮机末级蒸汽湿度

Measurement of Steam Wetness in Turbine Final Stage with the Optical Method

目前，在国内外可以用来测量汽轮机中蒸汽湿度的仪器尚不多见。该文主要介绍光学法饱和蒸汽湿度仪的基本原理、仪器结构及其在内蒙丰镇电厂２００ＭＷ汽轮机上进行末级湿度测量的试验情况。试验结果表明：该仪器结构合理、性能良好、测试结果可信，可满足电厂汽轮机湿度在线测量的需要。

An optical probe has been developed and constructed which can be used to measure the steam wetness and water droplet size in turbines.The basic principal and instrumentation construction are introduced.Results of measurements made in the final stage of a 200 MW steam turbine installed in Fengzheng Power Station of Inner Mongolia are given.Experimental data show that the optical probe works well and gives reliable results.