Analysis of Full-basin Flow Field Characteristics of Turbine Self-pressurizing Axial Piston Pump
In order to investigate the influence of the centrifugal turbine self-pressurizing device on the flow characteristics of the high-speed axial piston pump,a simulation model of the axial piston pump was established,and the pressure characteristics,velocity characteristics and cavitation characteristics of the whole basin flow field inside the pump when the centrifugal turbine was coupled with the piston pump were investigated by CFD simulation.The study shows that the oil suction capacity of the axial piston pump assembled with centrifugal turbine is significantly improved,and it has inhibiting effect on jet cavitation and suction cavitation,among which the inhibiting effect on suction cavitation is the most significant.After the application of the turbocharging system,the time-averaged gas phase volume of a single piston cavity during one week of rotation was reduced from 59.54 mm3 to 1.66 mm3,the maximum gas phase volume fraction was reduced from 0.155 to 0.029,and the jet velocity in the damping groove area was reduced from 100 m/s to 75 m/s,while the power consumed by the turbine accounted for 9.7％of the axial power of the piston pump.
axial piston pumpcentrifugal turbineCFD simulationflow field characteristicscavitation
万方数据
维普
