贾志鹏,王胜潮,郭颖,王建军,畅元江,王琦

• 1:中国石油大学(华东)新能源学院
• 2:中海石油舟山石化有限公司
• 3:中国石油大学(华东)机电工程学院

摘要(Abstract)：

为了研究烟气轮机动叶冲蚀机制，探究烟气轮机冷态模型内动叶冲蚀特性，采用冲蚀实验与高速摄影实验结合的方法，通过改变颗粒形状、颗粒粒径及入口风量，分析颗粒在动叶表面的冲蚀特性，同时，通过高速摄影实验探究颗粒冲蚀机制。冲蚀实验设置5种不同形状颗粒，发现多棱角颗粒（如金刚砂、石英砂）往往造成更严重的整体磨损，而圆形颗粒（如棕刚玉砂）损伤更加集中；设置不同颗粒粒径，发现当粒径增至600μm时，叶片表面损伤明显加剧；设置不同入口流量，分析发现流量达到1 800 m~3·h~(-1)时叶片前缘与压力面磨损严重，继续加大流量发现磨损程度加剧，但磨损最严重的位置不变，这与高速摄影实验所观测的结果基本保持一致。结果表明，颗粒的锐度因子越大、球形度越低，冲蚀现象越显著，且冲蚀严重区域会随颗粒形状变化而改变；当颗粒粒径增大时，冲蚀区域趋于集中，冲蚀最严重的部位基本保持不变；随着入口流量增加，叶片的冲蚀程度加剧，并逐渐向叶根部位扩展。

关键词(KeyWords)： 冲蚀特性;冷态模型;烟气轮机;高速摄影实验

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（52476043）

作者(Author): 贾志鹏,王胜潮,郭颖,王建军,畅元江,王琦

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