尾鳍对无阀压电泵性能的影响分析与试验研究  

Analysis and test on influence of caudal-fin on performance of valveless piezoelectric pump

作　　者：葛振涛[1] 纪晶[1] 兰玉彬[2] 胡笑奇[3] 秦婷婷[1] 胡彩旗[1] 

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109 [2]华南农业大学工程学院,广东广州510642 [3]丽水学院工程与设计学院,浙江丽水323000

出　　处：《排灌机械工程学报》2017年第1期87-92,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51475221);山东省高等学校青年骨干教师国内访问学者资助项目;青岛农业大学高层次人才科研基金资助项目(6631115044)

摘　　要：为了研究仿尾鳍式无阀压电泵的工作性能,探讨尾鳍对无阀压电泵泵送流量的影响,运用ANSYS软件对压电振子进行了湿模态分析,得到压电振子的前三阶工作频率以及压电振子的振型,然后通过Fluent软件,分别对有尾鳍和无尾鳍压电泵泵送性能进行仿真分析和试验对比.通过仿真分析得出,当激励电压峰峰值为100 V,频率为800 Hz时,有尾鳍时压电泵的泵送流量为65.34 m L/min,无尾鳍时压电泵的泵送流量为5.32 m L/min.试验结果表明:当仿尾鳍式压电振子的工作电压峰峰值为100 V,工作频率为760 Hz时,泵送流量为75.65 m L/min,工作频率为800 Hz时,泵送流量为60.25 m L/min;而无尾鳍压电泵在相同电压和频率下的泵送流量分别为4.60,4.10 m L/min,发现仿尾鳍式无阀压电泵泵送流量的主要来源为尾鳍对流体的驱动,分析了误差产生的原因,通过试验测试泵送流量与仿真结果进行对比,进一步验证仿真分析的正确性.In order to study the performance of a valveless piezoelectric pump with caudal -fin and identify the influence of piezoelectric vibrator caudal - fin on the pumping flow, a modal analysis on wetted piezoelectric vibrator caudal - fin was conducted in ANSYS. The first three working frequencies and corresponding vibration modes were obtained. Then the flow and performance of the piezoelectric pumps with and without caudal -fin were simulated by making use of Fluent, and compared with the experimental results. In simulations, when the excitation peak voltage is 100 V and the frequency is 800 Hz, the pumping flow in the piezoelectric pump with caudal - fin is 65.34 mL/min, while it is 5.32 mL/min in the pump without the fin. In experiments, when the excitation peak voltage is 100 V and the frequency is 800 and 760 Hz, the pumping flow in the piezoelectric pump with caudal -fin is 60.25 and 75.65 mL/min, but it is 4.10 and 4.60 mL/min in the pump without the fin, respectively. This is proved that the extra flow rate in the valveless piezoelectric pump with caudal -fin is mainly caused from the caudal -fin driving effect. Based on the comparison of tested and experimental pumping flow rate, the correctness of simulation analysis has been confirmed.

关 键 词：无阀压电泵 压电振子 尾鳍 仿真 流量 

分 类 号：S277.9[农业科学—农业水土工程] TP394.1[农业科学—农业工程]