Research on the Pressure Pulsation Characteristics of Ring-pipe Axial Flow Pump Device Affected by Working Conditions
To investigate the pressure pulsation characteristics of the axial flow pump unit under various operating situations,the SST turbulence model is used to conduct three-dimensional numerical calculations of the internal flow of the pump device under different working conditions.Numerically simulate the pressure pulsation in the water inlet pipe section,impeller inlet,guide vane body inlet and outlet pipe section in the pump device,and analyze the pressure fluctuation frequency and amplitude da-ta.The results show that the pressure fluctuation in the pump device increases as the flow rate decrea-ses,the pressure pulsation gradually decreases as the flow rate increases,and the pressure pulsation fre-quency is mainly one-time rotation frequency and two-time rotation frequency.The research results can be used to optimize the design and operation of the annular axial flow pump device and improve the performance and reliability of the pump device.
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