Analysis and optimization of key parameters of centrifugal pump based on 3D dimensional chain

The orifice ring gap has a great influence on the performance of centrifugal pump, but there are few researches on the key parameters related to the orifice ring gap. In this paper, the 3D dimensional chain model of radial runout of the outer cylindrical surface of the impeller orifice ring end relative to the reference of the pump shaft is established. The key parameters are optimized through the calculation and analysis of the 3D dimensional model, and the qualified rate of radial runout is improved. An optimized solution is provided to ensure the size of orifice ring gap.