Methodology for generating a general profile of asymmetrical rotors of twin-screw vacuum pumps with point meshing feature by a pre-defined sealing line


          

刊名:Proceedings of the Institution of Mechanical Engineers, Part B. Journal of engineering manufacture
作者:Hoang, Minh-Thuan(Hung Yen Univ Technol & Educ)
Tran, The-Van(Hung Yen Univ Technol & Educ)
刊号:780C0002-B
ISSN:0954-4054
出版年:2023
年卷期:2023, vol.237, no.10
页码:1582-1595
总页数:14
分类号:TH16
关键词:Pre-defined sealing linepoint meshing featureasymmetrical rotortwin-screw vacuum pumpoptimization profilevariable pitchvariable cross-sectionTOOTH PROFILEDESIGNERRORS
参考中译:预定义密封线;点啮合特征;不对称转子;双螺杆真空泵;优化齿形;变螺距;变截面;齿形;设计;误差
语种:eng
文摘:The sealing line is one of the key influences on twin-screw rotor vacuum pump performance. The design of a rotor profile based on a sealing line for an asymmetrical rotor of a vacuum pump can be studied further to generate varied rotor profiles and improve pump performance. Therefore, this study proposes a mathematical model for a pre-defined sealing line to design and optimize varied rotor profiles of vacuum pumps. The general sealing line, pre-defined by explicit equations of straight lines and elliptic curves, is proposed to generate various rotor profiles with different numbers of lobes. The functions for parameter variables of the pre-defined sealing line are constructed and directly variated along the rotor length to form the screw rotor with a variable pitch and a variable cross-section. The proposed pre-defined sealing line is also applied in the optimal design of a rotor profile to enhance pump performance. Numerical examples are performed to verify the flexibility and practicability of the proposed method.
参考中译:密封管路是影响双螺杆转子真空泵性能的关键因素之一。基于密封线的真空泵非对称转子型线的设计可以进一步研究,以产生不同的转子型线,提高泵的性能。因此,本研究提出了一种预定义密封线的数学模型,用于设计和优化真空泵的各种转子型线。提出了一种由直线和椭圆曲线的显式方程预先定义的通用密封线,以生成不同叶片数的不同转子型线。构造了预定义密封线参数变量的函数,并直接沿转子长度变化,形成变螺距、变截面的螺杆转子。所提出的预定义密封线也被应用于转子型线的优化设计,以提高泵的性能。数值算例验证了该方法的灵活性和实用性。