宽转速摆线泵空化及流量输出特性研究  

Study on Cavitation and Flow Characteristics of Gerotor Pump with Wide Rotating Speed

作　　者：段士伟 唐斐 曹文斌[2] 刘文兰 DUAN Shi-wei;TANG Fei;CAO Wen-bin;LIU Wen-lan(AVIC Xi'an Aero-engine Controls Technology Co.,Ltd.,Xi'an 700077,China;College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]中国航发西安动力控制科技有限公司,陕西西安700077 [2]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《液压气动与密封》2023年第5期67-72,共6页Hydraulics Pneumatics & Seals

基　　金：甘肃省自然科学基金(20JR10RA191)。

摘　　要：主动减震系统摆线泵工作转速范围宽,最高达6000 r/min,随着转速的变化,摆线泵密封容积腔、吸油口极易产生空化现象,进而影响摆线泵流量输出特性。提出了一种结构紧凑型动力单元,基于摆线泵宽转速运行工况,研究不同转速下摆线泵最小密封容积腔、吸油流道气相体积分数变化规律。研究结果表明:当摆线泵转速为1000 r/min时,最小密封容积腔含气率50%附近的区域占比大,当转速为6000 r/min时,最小密封容积腔含气率90%附近的区域增加明显;摆线泵工作在2000 r/min时,入口加压0.5 MPa气相体积分数最大为0.018,入口为大气压时的气相体积分数最大为0.1,当转速增加至6000 r/min时,入口加压能够有效控制吸油流道气相体积分数,改善摆线泵流量输出特性。The gerotor pump of the active damping system has a wide working speed range,up to 6000 r/min.With the change of the speed,the sealing volume chamber and oil suction port of the gerotor pump are prone to cavitation,which will affect the flow output characteristics of the gerotor pump.A compact power unit is proposed in this paper.Based on the wide speed operation condition of gerotor pump,the variation law of gas phase volume fraction in the minimum sealed volume chamber and oil suction passage of gerotor pump at different speeds is studied.The results show that when the rotational speed of the gerotor pump is 1000 r/min,the area near 50%of the minimum sealing volume cavity has a large proportion,and when the rotational speed is 6000 r/min,the area near 90%of the minimum sealing volume cavity has a significant increase.When the gerotor pump operates at 2000 r/min,the maximum gas phase volume fraction at the inlet pressure of 0.5 MPa is 0.018,and the maximum gas phase volume fraction at the inlet pressure of atmospheric pressure is 0.1.When the speed increases to 6000 r/min,the inlet pressure can effectively control the gas phase volume fraction in the oil suction passage,and improve the flow output characteristics of the gerotor pump.

关 键 词：摆线泵 宽转速 空化现象 流量输出特性 

分 类 号：TH137[机械工程—机械制造及自动化]