基于相似理论的涡旋压缩机径向迷宫密封泄漏量研究  

Research on Leakage of Radial Labyrinth Packing of Scroll Compressor Based on Similarity Theory

作　　者：刘兴旺[1,2] 张官正 李超[1] 张天龙 

机构地区：[1]兰州理工大学石油化工学院 [2]兰州理工大学温州泵阀工程研究院 [3]中航工业兰州万里航空机电有限责任公司

出　　处：《化工机械》2015年第5期643-647,共5页Chemical Engineering & Machinery

基　　金：国家自然科学基金资助项目(51265026);浙江省自然科学基金资助项目(Y1080079)

摘　　要：为准确分析和预测涡旋压缩机径向迷宫密封的泄漏规律,采用相似理论中的Π定理来研究径向迷宫密封泄漏量的影响因素,建立了径向迷宫密封泄漏量相似准数方程。根据实物建立了涡旋压缩机径向迷宫密封模型,结合模型试验分析了原型中泄漏量的变化规律。结果表明:量纲分析法可以预测原型中泄漏量的变化趋势;在相邻压缩腔压差不变时,泄漏量随间隙比和泄漏线长度比的增大而增大,随齿数比的增大而减小,且泄漏量-齿数比曲线斜率较稳定。To analyze and predict the leakage of scroll compressor＇ s radial labyrinth packing accurately, the H theorem of similarity theory was adopted to discuss the leakage influence factors of the scroll compressor＇ s radial labyrinth, and the similarity dimensional equation of this leakage was established, including the scroll compressor＇ s radial labyrinth packing model. Analyzing the leakage＇ s variation trend shows that the dimensional analysis method can forecast the leakage＇ s variation trend ; and when the pressure difference of the two adjoining labyrinth grooves keeps unchanged; the leakage becomes larger with the increase of both clearance ratio and leakage line＇ s length ratio and it decreases with the increase of gear ratio, meanwhile, the slope of curve of the leakage-gear ratio keeps more stable.

关 键 词：涡旋压缩机 迷宫密封 泄漏量 相似理论 

分 类 号：TQ051.21[化学工程]