内啮合齿轮泵补偿装置的设计研究  

Design of the compensation device for internal gear pump

作　　者：郭善新[1] 林旭云[1] 余运龙[1] GUO Shanxin;LIN Xuyun;YU Yunlong(College of Electronics and Information Science,Fujian Jiangxia University,Fuzhou 350108,China)

机构地区：[1]福建江夏学院电子信息科学学院,福建福州350108

出　　处：《甘肃农业大学学报》2022年第4期204-210,219,共8页Journal of Gansu Agricultural University

基　　金：福建省自然科学基金-引导性项目(2020H0026);福建省教育科学“十四五”规划课题(FJJKBK21-031);福建省教育教改项目(FBJG20200100);福建江夏学院项目(JXZ2021015,J2021B024,J2021B002)。

摘　　要：【目的】补偿装置对高压齿轮泵的设计至关重要,为实现内啮合齿轮泵的压力提升,需对补偿装置进行精确建模。【方法】在分析径向补偿机理的基础上,详细分析装置在过渡区的压力分布规律,推导出在一个周期内过渡区的压力分布规律,根据内外月牙块力的平衡条件,建立装置的数学模型。并根据补偿装置中月牙块边界,密封棒、弹簧的分布夹角等设计参数,利用MATLAB程序计算压力补偿腔的夹角范围,最后进行试验研究。【结果】在排量为101.2 mL/r,压力为20.2 MPa,转速为1800 r/min条件下,补偿腔夹角为30.12°,泵的容积效率可达93.6%。【结论】泵运行过程无异常,无卡滞“抱死”的现象,补偿装置设计有效。【Objective】The compensation device is very important for the design of high-pressure gear pump.In order to increase the pressure of internal gear pump,it is necessary to accurately model the com‐pensation device.【Method】In this study,based on the analysis of the radial compensation mechanism,the pressure distribution law of the device in the transition area in a cycle was analyzed and deduced in details,and then the mathematical model of the device was established according to the conditions of balancing the force of inner-outer crescent blocks.Finally,according to the design Parameters,which included the pres‐sure boundary line,the distribution angle of the sealing rod,the spring,the installation angle and other pa‐rameters,the angle of the compensation cavity was calculated by MATLAB programming.【Result】Our results showed that the volumetric efficiency of the pump could reach 93.6%with the conditions of dis‐placement of 101.2 mL/r,pressure of 20.2 MPa,rotation speed of 1800 r/min,and the displacement angle of 30.12°in the crescent block.【Conlusion】The design of the compensation device was effective since there was no abnormality in the whole running process and no"locked death"phenomenon of the sports assistant.

关 键 词：内齿轮泵 补偿装置 月牙块 平衡设计 

分 类 号：TH137.51[机械工程—机械制造及自动化]