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浙江大学学报(工学版)
J4  2014, Vol. 48 Issue (2): 200-205    DOI: 10.3785/j.issn.1008-973X.2014.02.003
机械工程     
改进的柱塞泵流量脉动“实用近似”测试法
宋月超, 徐兵, 杨华勇, 张军辉
浙江大学 流体动力及机电系统国家重点实验室,浙江 杭州 310027
Modified practical approximate method for testing source flow of  piston pump
SONG Yue-chao, XU Bing, YANG Hua-yong, ZHANG Jun-hui
State Key Laboratory of Fluid Power and Transmission and Control, Zhejiang University, Hangzhou 310027, China
 全文: PDF(1349 KB)  
摘要：

针对现有“实用近似”法测试带有复杂出口管道液压泵的流量脉动精度低的问题,提出一种改进的柱塞泵流量脉动“实用近似”测试法.基于柱塞泵、参考管道和加载阀三维流场,建立“实用近似”法测试系统的有限元模型,该模型对参考管道压力信号仿真精度大于90%；采用该有限元模型和动边界理论获得柱塞泵复杂出口管道特征参数,提高“实用近似”法对泵源阻抗估算精度.对比改进的“实用近似”法和ISO“二次源”法测试的泵源流量脉动，结果表明,脉动幅值和最小流量值基本相同,因此,改进的“实用近似”法适于测试带有复杂出口管道的柱塞泵流量脉动.
关键词： “  实用近似”  法;  有限元模型;  复杂出口管道;  泵源流量脉动    
Abstract:

A modified practical approximate method for the flow ripple measurement was proposed, in order to solve the problem that the test accuracy of the source flow of pump with complicated discharge pipe was low with the current method. A finite element model of test system utilizing practical approximate method was built based on the three-dimensional flow field of the axial piston pump, reference pipe and loading valve. The simulation accuracy of the pipe pressure is more than 90%. Based on the validated finite element model and dynamic boundary condition, the characteristic parameters of the complicated pump discharge pipe were obtained. The pump source impedance calculated by the proposed method was improved. Compared with the ISO secondary source method, the amplitude and minimum of the measured flow ripple of the proposed method was satisfying. Therefore, the modified practical approximate method can be used to test the source flow ripple of the hydraulic pump with complicated discharge pipe.
Key words: practical approximate method    finite element model    complicated pump discharge pipe    source flow
出版日期: 2014-03-03
:  TH 137  
基金资助:

国家“973”重点基础研究发展规划资助项目（2014CB046403）；国家“十一五”科技支撑计划资助项目（2011BAF09B03）.
通讯作者: 徐兵，男，教授，博导.     E-mail: bxu@zju.edu.cn
作者简介: 宋月超（1981—），男，博士生，主要从事流体传动及控制方面的研究.E-mail: syc19810807@sina.com
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引用本文:

宋月超, 徐兵, 杨华勇, 张军辉. 改进的柱塞泵流量脉动“实用近似”测试法[J]. J4, 2014, 48(2): 200-205.

SONG Yue-chao, XU Bing, YANG Hua-yong, ZHANG Jun-hui. Modified practical approximate method for testing source flow of  piston pump. J4, 2014, 48(2): 200-205.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2014.02.003    或    http://www.zjujournals.com/xueshu/eng/CN/Y2014/V48/I2/200

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