Optimization Design Of Self-priming Centrifugal Pump And Capability Experiment Research

With the rapid development of social progress and agriculture, people have becomeincreasingly demanding of equipment, due to self-priming pump can achieveself-priming, easily to remote control, it is widely used in industrial and agriculturalfields, so we have higher demand on self-priming pump’s performance, efficiency andother aspects. The impact of the current self-priming centrifugal pump self-primingperformance factors is unclear, mainly based on experience and a lot of testing to selectthe parameters, but little research on its internal flow field, so not only a lot of thedevelopment cycle needed, but also cost will increase, and self-priming performancecan’t achieve the desired result.This paper summarizes the current self-priming pump on the basis of researchresults, and make a simple improvements which based on the ordinary multistagecentrifugal pump, and combined it with theoretical analysis method and CFD ofself-priming pump’s internal flow field, and related components are optimized to findthe effects of structural parameters on the self-priming performance, to determine theoptimal solution, and finally create a real pump model, and then do experimentalverification. I have provided the basis for the optimal design multistage centrifugalself-priming pump, it has a certain practical value. The main contents are as follows:(1) A combination of theoretical analysis and experimental, firstly the self-primingprinciples were introduced, followed by the main components function were analyzed,finally the key parts for self-priming specific were designed, and make the3D partsmodel.(2) Constant algorithm were simulated within the mixed multi-stage self-primingmultistage pump and ordinary pump, which is during normal operation of the hydraulicperformance, by this, we can find pump internal parts of the hydraulic performance under the same conditions. The implications for the future design studies lay thefoundation for self-priming pump.(3) Using orthogonal test method, binding assay data were analyzed recirculation holesize, the initial liquid level, the valve spring thickness, shape, and the gas-liquidseparation chamber self-priming, by this, we find the impact on self-primingperformance, the relationship between primary and secondary sequence studies, obtainthe optimal structure and size combinations.(4) Using finite element analysis conducted on the recirculation valve static strengthsimulation. The mechanical properties and creep simulation occurs at the valve seat60℃conditions after10000hours.(5) The real pump tests to determine the hydraulic performance self-priming andself-priming performance curve, and compared to CFD simulation results. Thenumerical simulation can accurately predict the performance of a multi-stageself-priming pump and internal flow characteristics...