A new profile design method for conjugate pump and its performance analysis. (3rd July 2016)

• Record Type: Journal Article
• Authors: Wang, Hui; Wang, Jianli; Liu, Jinhao
• Is Part Of: Advanced composite materials. Volume 25:Number 4(2016)
• Page Start: 345
• Page End: 358
• Publication Date: 2016-07-03
• Subjects: conjugate pump -- rotor profile -- design method -- design parameters; Composite materials -- Periodicals; Reinforced plastics -- Periodicals; Electronic journals; 620.11805
• DOI: 10.1080/09243046.2014.996960
• Languages: English
• ISSNs: 0924-3046

Abstract

Abstract : In this paper, we propose a new design theory and method for the profile design of conjugate pump rotor. This method combines the generating method and the theory of envelope curves to get the conjugate analytic expression. The solution process of this method is complicated, but the results have high accuracy. And the design profile can ensure that the two rotors always have a conjugate contact point when rotating, thus preventing the pump's leakage. The volumetric efficiency of the pump is used to evaluate the excellent of profile design. The design variables are the number of lobes and the shape of single lobe. Then the performance analysis of the pump is done to understand the effects of design parameters on its volumetric efficiency. And the results show that the increase in the number of lobes can reduce the volumetric efficiency. For the two-lobe rotor, the raise of the center height of the top circle can enhance the volumetric efficiency. The pump designed by this method can gain a large adjustment range for performance by changing these design variables.