中南大学学报（自然科学版）2025，Vol.56Issue(1)：80-89,10.DOI:10.11817/j.issn.1672-7207.2025.01.008
基于单对非圆齿轮的三缸往复泵流量脉动平抑方法
Flow pulsation suppression method of triplex reciprocating pump by non-circular gear drive
摘要
Abstract
In order to address the performance defect of large flow pulsation,a method for pulsation suppression method based on non-circular gear driving was proposed.Firstly,according to the instantaneous flow and average flow of the three-cylinder reciprocating pump,the theoretical transmission ratio of non-circular gear for pulsation suppression was derived.Secondly,the design method of closed non-circular gear adapted to the characteristics of periodical flow pulsation of three-cylinder reciprocating pump was proposed based on Fourier series.The influence of trigonometric function terms on the flow characteristics and the shape of non-circular gear was clarified.Finally,considering the flow pulsation caused by flow backflow of the check valve,a fluid simulation model of three-cylinder reciprocating pump was established to compare the effect of non-circular gear and accumulator on the pulsation of the pump.The motion test of the mechanical end of the pump driven by non-circular gear was completed.The results show that the flow pulsation rate of the three-cylinder reciprocating pump decreases from 30.39%to 13.12%through the external non-circular gear drive.Increasing the number of trigonometric terms of non-circular gear ratio can further reduce the pulsation rate,while it is easy to cause root cutting problems of non-circular gears.The flow pulsation caused by the delayed movement of the valve spool can not be suppressed by the noncircular gears,but its suppressing effect is better than that of the accumulator.When the non-circular gear is used together with the accumulator,the flow pulsation rate of the pump can decrease to 7.38%to achieve a more uniform instantaneous flow rate.关键词
流量脉动/三缸往复泵/非圆齿轮/脉动平抑/流体仿真Key words
flow pulsation/triplex reciprocating pump/non-circular gear/pulsation suppression/fluid simulation分类
机械制造引用本文复制引用
刘大伟,黄浩,吴涛..基于单对非圆齿轮的三缸往复泵流量脉动平抑方法[J].中南大学学报（自然科学版）,2025,56(1):80-89,10.基金项目
河北省自然科学基金资助项目(E2022203006)(Project(E2022203006)supported by the Natural Science Foundation of Hebei Province) （E2022203006）
