半球缺阻流体无阀压电泵的实验验证

张建辉; 曹炳鑫; 陈道根; 纪晶; 黄俊

doi:10.3788/OPE.20142201.0076

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半球缺阻流体无阀压电泵的实验验证

微纳技术与精密机械 | 更新时间：2020-08-13

- 半球缺阻流体无阀压电泵的实验验证
- Experimental verification on valve-less piezoelectric pump with hemisphere-segment bluff-body
- 光学精密工程 2014年22卷第1期页码：76-84
- 作者机构：
  
  1. 南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京,210016
  2. 青岛农业大学机电工程学院,山东青岛,266109
- 作者简介：
- 基金信息：
  
  江苏高校优势学科建设工程资助项目( )
- DOI：10.3788/OPE.20142201.0076
  中图分类号： TH38;TN384
- 收稿日期：2013-09-20，
  
  纸质出版日期：2014-01-15
- 稿件说明：
移动端阅览
张建辉, 曹炳鑫, 陈道根等. 半球缺阻流体无阀压电泵的实验验证[J]. 光学精密工程, 2014,22(1): 76-84

ZHANG Jian-hui, CAO Bing-xin, CHEN Dao-gen etc. Experimental verification on valve-less piezoelectric pump with hemisphere-segment bluff-body[J]. Editorial Office of Optics and Precision Engineering, 2014,22(1): 76-84
张建辉, 曹炳鑫, 陈道根等. 半球缺阻流体无阀压电泵的实验验证[J]. 光学精密工程, 2014,22(1): 76-84 DOI： 10.3788/OPE.20142201.0076.

ZHANG Jian-hui, CAO Bing-xin, CHEN Dao-gen etc. Experimental verification on valve-less piezoelectric pump with hemisphere-segment bluff-body[J]. Editorial Office of Optics and Precision Engineering, 2014,22(1): 76-84 DOI： 10.3788/OPE.20142201.0076.

摘要

设计了一套压电双晶片作为激励源的半球缺阻流体无阀压电泵。分析了该压电泵的结构及工作原理

并采用有限元软件对其内部流场进行模拟分析。仿真结果表明:该泵存在正反向流阻不等特性

半球缺阻可以作为泵的无运动部件阀。最后

实际制作了半球缺无阀压电样泵和多组半径不等的半球缺

并进行了泵的流阻及流量实验。实验结果表明:该泵正反向流时间差随入口压强增大而减小;当驱动电压为150 V

频率为17 Hz

半球缺半径为4.0 mm时

泵的输出流量达到最大

其值为121.4 ml/min;同时

该泵单位时间内的输出流量随半球缺半径增大而呈递减的变化趋势

而且半球缺的半径大小对该类无阀压电泵的工作效能有较大的影响。

Abstract

A valve-less piezoelectric pump with a Hemisphere-segment Bluff-body(HSBB) was designed by using a piezoelectric bimorph as exciting source. The structure and working principle of the piezoelectric pump were analyzed theoretically

then the finite element software was employed in simulating the flow fields of the pump. The theoretical analysis show that the positive and negative flow resistances of the pump are unequal

so the HSBBs can be used as no-moving parts in the pump. Finally

a sample pump based on the HSBB was fabricated and a series of HSBBs with different radiuses were produced. Some experiments on flow resistances and output flow rates of the pump were performed. The experiment results indicate that the time difference between the positive and negative flows decreases with increasing the pressure difference. The maximum flow rate of the pump obtained is 121.4 ml/min under a operating frequency of 17 Hz and the HSBB's radius of 4.0 mm. Moreover

the experiments give a relationship that the flow rate of the pump increases with the decreasing size of HSBB's radius during the unit time under keeping the peak-to-peak voltage of 150 V

which has a greater influence on the working efficiency of the pump.

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Keywords

references

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