爪式真空泵爪式转子型线的构建理论研究  

Theoretical Analysis of Rotor Profile of Claw-Type Vacuum Pump

作　　者：王君[1] 姜希彤[1] 宋永兴[1] 李天敏 郝木明[1] 

机构地区：[1]中国石油大学(华东)化学工程学院,青岛266580

出　　处：《真空科学与技术学报》2015年第6期773-778,共6页Chinese Journal of Vacuum Science and Technology

基　　金：山东省自然科学基金资助项目(ZR2011EEQ020)

摘　　要：研究了爪式真空泵曲爪型爪式转子型线的构建过程;得出半径比和爪顶圆弧角是影响转子几何结构的重要参数,进而分析了这两个参数的变化对爪式转子几何结构和爪式真空泵工作性能的影响。针对现有爪式转子型线的缺点,提出一种新型圆弧爪式转子型线;并将新型圆弧爪式转子与现有曲爪型爪式转子在气体流动和受力变形方面进行比较,研究结果表明新型圆弧爪式转子有效地提高了爪式转子的工作性能,改善其应力分布且减小其最大变形。A novel type of rotor profile, a circular arc profile, of the claw type vacuum pump was developed, on the basis of the theoretical analysis of rotor profile construction, to overcome the problems of the conventional rotor, including the poor meshing, big deformation, and low operation pressure, etc. The impact of the variables of the rotor profile, includ- ing the radius ratio and angle of claw＇s top arc,on the shape of the rotor and performance of the claw-type vacuum pump were analytically investigated. The gas flow field and force-induced deformation for the claw-type vacuum pumps with the newly-developed and conventional rotor profiles were numerically simulated, respectively. The simulated results show that the rotor with the modified profile outperforms the one with the conventional profile in many ways, such as improved per-formance, mcluced stress, and decreased maximum deformation of the claw rotor.

关 键 词：爪式真空泵 曲爪型爪式转子 半径比 爪顶圆弧角 新型圆弧转子 

分 类 号：TB752.26[一般工业技术—真空技术]