惯性力平衡式二维燃油泵的设计与研究  

Design and research of two-dimensional fuel pump with balanced inertia force

作　　者：王河缘 李胜 阮健[1] WANG Heyuan;LI Sheng;RUAN Jian(College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310000,China)

机构地区：[1]浙江工业大学机械工程学院,杭州310000

出　　处：《航空学报》2022年第1期542-553,共12页Acta Aeronautica et Astronautica Sinica

基　　金：国家重点研发计划(2019YFB2005202);国家自然科学基金(51675482)。

摘　　要：提出了一种新型的惯性力平衡式二维燃油泵,该泵将配流机构集成在柱塞与柱塞环上,去除了传统柱塞泵独立的配流机构,简化了燃油泵的结构,并且利用柱塞与柱塞环方向相反的轴向往复运动,在体积不变的前提下增加了泵的排油行程,进一步提高了燃油泵的功率密度。该燃油泵的导轨采用等加等减速曲面,利用平衡导轨组进行与驱动导轨组加速度大小相等、方向相反的往复运动,来平衡在高转速情况下缸体受到的驱动导轨组给予的惯性力,提供了一种燃油泵高速化的可能性。结合泵的原理,分析了内泄漏、外泄漏以及油液的可压缩性对泵容积损失的影响。利用AMESIM建立惯性力平衡式二维燃油泵的仿真模型进行分析,与实验结果进行比对验证。样机试验表明,在负载压力为1 MPa时,转速从1000 r/min提升到7000 r/min,容积效率从90.6%提升到97.8%,理论偏差在3%左右;当转速为2000 r/min时,负载压力从1 MPa提高到6 MPa,容积效率从94.6%降低到87.5%,理论偏差在5%左右,说明了理论分析的正确性。A new concept named two-dimensional fuel pump with balanced inertia force balanced is proposed.The pump integrates the flow distribution mechanism on the piston and the piston ring,eliminating the independent flow distribution mechanism of the traditional piston pump,and simplifying the structure of the fuel pump.The axial reciprocating movement of the piston and the piston ring in the opposite direction increases the discharge stroke of the pump without changing the volume,and further improves the power density ratio of the fuel pump.The guide surface of the fuel pump adopts equal acceleration and deceleration curved surfaces,and uses the balancing group to perform reciprocating motion with the same acceleration and opposite direction as that of the driving group to balance the inertial force generated by the driving group at high speed,providing a kind of possibility of high-speed fuel pump.Based on the principle of the pump,the effects of internal leakage,external leakage,and oil compressibility that cause volume loss are analyzed.AMESIM is used to establish a simulation model of the pump for theoretical analysis and comparison with the experimental results for verification.The experiment shows that when the load pressure is 1 MPa,the speed is increased from 1000 r/min to 7000 r/min,the volumetric efficiency is increased from 91.6%to 97.8%,and the theoretical deviation is about 3%;when the speed is 2000 r/min,the load pressure increases from 1 MPa to 6 MPa,the volumetric efficiency decreases from 94.6%to 87.5%,and the theoretical deviation is around 5%.Correctness of the theoretical analysis is thus verified.

关 键 词：二维燃油泵 惯性力平衡 泄漏损失 压缩损失 AMESIM 容积效率 

分 类 号：V233.22[航空宇航科学与技术—航空宇航推进理论与工程]