Simulation and Experimental Study on Valveless Piezoelectric Pump with Tapered Step Tubes

被引：0

作者：

Sun Y. ^{[1
]}

Li J. ^{[1
]}

Su T. ^{[1
]}

Wang J. ^{[1
]}

Li R. ^{[1
]}

机构：

[1] College of Mechanical Engineering, Northeast Electric Power University, Jilin

来源：

Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2024年 / 44卷 / 03期

关键词：

finite element simulation; flow experiments; tapered stepped tubes; valveless piezoelectric pump;

D O I：

10.16450/j.cnki.issn.1004-6801.2024.03.025

中图分类号：

学科分类号：

摘要：

Aim at the problems of small output flow rate and large return flow of the tapered flow pipe valve-less piezoelectric pump, combined with the blocking effect of the tapered flow pipe and overflow dam step structure, a tapered stepped flow pipe valveless piezoelectric pump is developed. The flow resistance characteristics of the tapered stepped flow pipe are analyzed theoretically. The finite element software is used to compare the flow field simulation of the tapered stepped flow pipe valveless piezoelectric pump and the tapered stepless valveless piezoelectric pump, and an experimental prototype of the tapered stepped flow pipe valveless piezoelectric pump is made to measure the flow of two pumps at different frequencies and driving voltages. The experimental results show that when the peak to peak value of driving voltage is 180 V and the driving frequency is 18 Hz, the maximum flow rate of the tapered stepless flow pipe valveless piezoelectric pump reaches 6.20 ml/min, and the output flow of the tapered stepless valveless piezoelectric pump reaches the maximum 8.04 ml/min, which is increased by 29% compared with the tapered stepless flow pipe valveless piezoelectric pump. The results show that the tapered stepped-tube valveless piezoelectric pump can effectively inhibit the backflow phenomenon in the tapered flow pipe, and has a better output flow than the stepless piezo pump, which verifies the feasibility of the tapered stepless valveless piezoelectric pump. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.

引用

页码：602 / 607and626

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