汽轮机内湿蒸汽两相流流场的实验研究  

Experimental Study of the Wet Steam Flow Field in LP Steam Turbine

作　　者：汪丽莉[1] 蔡小舒[1] 欧阳新[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《动力工程》2003年第2期2270-2274,2302,共6页Power Engineering

基　　金：国家自然科学基金 (5 99760 2 5 )

摘　　要：凝汽式汽轮机末几级往往工作于湿蒸汽区 ,工作条件恶劣。作者研制了能同时测量汽液两相流动状况的集成化探针 ,并成功地在电厂进行了实测。实验结果表明 :汽轮机中湿蒸汽的流动特性沿叶高是不均匀的 ,湿蒸汽中二次水滴的流动速度和方向与主汽流都有很大差别。讨论了湿蒸汽流场的测量方法并对部分实验结果进行了分析。图 1 0参The last stages in LP steam turbine work with wet steam, the two phase flow may cause efficiency loss and dangerous blade erosion. An integrated probe system, which is capable of measuring the flow field of steam and the water droplets simultaneously has been successfully developed by authors. Experiments have been done in 200MW and 350MW steam turbines. Experimental results show that the flowing condition of steam and coarse water are of great difference. Some results are presented and discussed in this paper. Figs 10 and refs 8.

关 键 词：汽轮机 湿蒸汽两相流 二次水滴 集成化探针 流场测量 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]