CAJ | 학술논문

基于离心泵的基本原理和集成化思想,提出了一种电动机、液压叶片泵和孔板离心泵三体合一的液压电机泵结构,其中孔板离心泵作为叶片泵的前置辅助泵,用以提高叶片泵的进口压力,保证主泵吸油充足,突现出液压电机泵的结构紧凑、低噪音、效率较高、无外泄漏等优点.应用流场解析技术,获得了孔板离心泵主要结构参数对其升压效果和效率的影响规律,并总结出孔板离心泵的设计原则.研究发现:当离心管倾角为45°、偏角在45°～60°时,孔板离心泵具有显著的升压效果,其消耗的功率占电机泵额定功率的0.41%,表明孔板离心泵的引入对整个电机泵的功率特性影响很小,孔板离心泵自身效率可达95%以上,而包含引油窗孔流道的孔板离心泵的整体效率为22%,孔板离心泵出口至主泵引油窗孔之间的涡流损失是造成孔板离心泵整体效率降低的主要原因.
기우리심빙적기본원리화집성화사상,제출료일충전동궤、액압협편빙화공판리심빙삼체합일적액압전궤빙결구,기중공판리심빙작위협편빙적전치보조빙,용이제고협편빙적진구압력,보증주빙흡유충족,돌현출액압전궤빙적결구긴주、저조음、효솔교고、무외설루등우점.응용류장해석기술,획득료공판리심빙주요결구삼수대기승압효과화효솔적영향규률,병총결출공판리심빙적설계원칙.연구발현:당리심관경각위45°、편각재45°～60°시,공판리심빙구유현저적승압효과,기소모적공솔점전궤빙액정공솔적0.41%,표명공판리심빙적인입대정개전궤빙적공솔특성영향흔소,공판리심빙자신효솔가체95%이상,이포함인유창공류도적공판리심빙적정체효솔위22%,공판리심빙출구지주빙인유창공지간적와류손실시조성공판리심빙정체효솔강저적주요원인.
Based on the principle of centrifugal pump and the idea of compact design,an electric-motor-pump is developed.It is integrated by an electric motor,a hydraulic vane pump and a port-plate centrifugal pump as a compact hydraulic power unit.The vane pump is as the main pump of the unit.The port-plate centrifugal pump is designed specially for the main pump to improve the suction performance of the electric-motor-pump.The integrated pump demonstrates some attractive advantages such as more compact structure,lower noise,higher efficiency and no external leakage.By computational fluid dynamics(CFD)method,the efleets of the main structual parameters of the port.plate centrifugal pump on its outlet pressure and the efficiency are investigated.The design rules for the port.plate centrifugal pump are concluded.The simulation results show that the port-plate centrifugal pump can raise the inlet pressure of the main pump obviously.When the slope angle of the eccentric tube is 45°and the bias angle is between 45°～60°.the maximum power consumption is only about 0.41%of the electric-motor-pump,which also shows that the port-plate centrifugal pump almost do not influences the whole power characteristics ofthe electric-motor-pump.Its efficiency Can be above 95 percent,and the whole efficiency of the centrifugal pump including the outlet channel is 22%.Power loss OCCurS due to eddy flow from the outlet of the centrifugal pump to the outlet channel to the main pump.