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转套式配流系统转套间隙对容积效率的影响

Influence on volumetric efficiency of rotating-sleeve clearance of rotating-sleeve distributing-flow system
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摘要 容积效率反映了转套式配流系统的配流性能。在考虑转套间隙引起流质泄漏的基础上,建立了空化分析的数学模型,并利用动网格和滑移网格技术对配流系统的运行情况进行了数值模拟,结果显示:随着转套与泵体之间间隙的增大,转速小于1100 r/min时,容积效率随转速升高缓慢增加,转速高于1100 r/min后,容积效率急剧减小,主要是受空化作用的影响;不同的负载压力下不同转套间隙引起的容积效率变化趋势一致,均随负载压力的增大逐渐降低。 Distribution performance of rotating-sleeve distributing-flow system can be reflected by volumetric efficiency.Established a mathematical model of cavitation based on the consideration of leakage caused by rotating-sleeve clearance and operation of distributing-flow system have been simulated by using dynamic mesh and sliding mesh.Obviously with the increase of leakage between rotating-sleeve and pump body,the volumetric efficiency is increasing slowly with the increase of rotating speed up to 1100 r/min.While above this value it is in sharp decline because cavitation effect plays a leading role.Volumetric efficiency in different rotating-sleeve clearances have same trend during the change of load pressure.They are all decreasing with the increase of load pressure.
作者 姜晓天 张洪信 赵清海 程前昌 张延君 Jiang Xiaotian;Zhang Hongxin;Zhao Qinghai;Cheng Qianchang;Zhang Yanjun(School of Electromechanical Engineering,Qingdao University,Shandong Qingdao,266071,China;Power Integration and Energy Storage Systems Engineering Technology Center,Qingdao University,Shandong Qingdao,266071,China)
出处 《机械设计与制造工程》 2019年第12期99-102,共4页 Machine Design and Manufacturing Engineering
基金 国家自然科学基金资助项目(51575286) 山东省自然科学基金资助项目(2014ZRB01503)
关键词 容积效率 配流系统 转速 负载压力 转套间隙 volumetric efficiency distributing-flow system rotating speed load pressure rotating-sleeve clearance
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