阀参数对螺旋线形阀压电泵输出性能的影响
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摘要
为了提高拟悬臂梁结构的螺旋线形阀压电泵输出性能,探讨了阀的几何参数和阀的材料参数与泵输出量之间的优化关系。首先,推导了泵流量输出与阀几何参数关系式;然后,在该理论指导下,通过多组试验研究了阀的几何参数对泵输出的量的影响关系,得出选用适当的螺旋极角以及适当降低阀的臂宽和厚度可以提高压电泵的输出;最后,对关键元器件螺旋线形阀材料参数的选用进行了比较,得出选用较低切变模量的阀材料可以提高压电泵输出。试验结果表明:要获得较高的泵流量,阀的极角取值为1.5π、阀厚度取值为0.1mm时最佳,而流量受臂宽的影响呈单边的趋势性不明显;相同条件下,由于铍青铜的材料切变模量小于弹簧钢的材料切变模量,铍青铜阀压电泵的输出流量高于弹簧钢阀压电泵的输出流量。
The piezoelectric pump with valve is becoming more and more favored in aerospace,micromechanics and biological medicine due to the advantages of non-magnetic drive,simple structure,small volume and light weight.In order to improve the output performance of Spiral Linear Valve Piezoelectric Pump in a proposed cantilever structure,the optimization relationship between the geometric parameters of the valve and the material parameters of the valve and the output of the pump is discussed.Firstly the geometric parameter relational expression between pump flow output and valve is deduced,and then under the theoretical guidance,the influence of geometric parameters on the pump output is explored through multigroup experiments.It can be found that the output of Piezoelectric Pump can be improved through selecting the proper spiral polar angle and reducing the width and thickness of valve arm.Comparing the selection of material parameters of Spiral Linear Valve,the output of pump may be improved through selecting the valve materials with lower shear modulus.The experimental results show that,in order to get higher pump output flow,the best condition is that polar angle of valve takes 1.5π,the valve thickness takes 0.1mm,and the flow influenced by the width of crank arm is not obvious unilateral trend.In this case,the material shear modulus of beryllium bronze is smaller than that of spring steel,the output flow of beryllium bronze valve piezoelectric pump is higher than that of spring steel valve piezoelectric pump.
The piezoelectric pump with valve is becoming more and more favored in aerospace,micromechanics and biological medicine due to the advantages of non-magnetic drive,simple structure,small volume and light weight.In order to improve the output performance of Spiral Linear Valve Piezoelectric Pump in a proposed cantilever structure,the optimization relationship between the geometric parameters of the valve and the material parameters of the valve and the output of the pump is discussed.Firstly the geometric parameter relational expression between pump flow output and valve is deduced,and then under the theoretical guidance,the influence of geometric parameters on the pump output is explored through multigroup experiments.It can be found that the output of Piezoelectric Pump can be improved through selecting the proper spiral polar angle and reducing the width and thickness of valve arm.Comparing the selection of material parameters of Spiral Linear Valve,the output of pump may be improved through selecting the valve materials with lower shear modulus.The experimental results show that,in order to get higher pump output flow,the best condition is that polar angle of valve takes 1.5π,the valve thickness takes 0.1mm,and the flow influenced by the width of crank arm is not obvious unilateral trend.In this case,the material shear modulus of beryllium bronze is smaller than that of spring steel,the output flow of beryllium bronze valve piezoelectric pump is higher than that of spring steel valve piezoelectric pump.
引文
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[18]张英会,刘辉航,王德成.弹簧手册[M].北京:机械工业出版社,1997:304-305.
[2]姜恩宇,朱晓锦,邵勇,等.SMA机敏结构交替驱动恒流源及其振动控制[J].振动、测试与诊断,2013,33(2):204-209.Jiang Enyu,Zhu Xiaojin,Shao Yong,et al.Alternative driven SMA smart structure based on constant current source for vibration control[J].Journal of Vibration,Measurement&Diagnosis,2013,33(2):204-209.(in Chinese)
[3]季忠,胡锐兴.基于Photoplethysmography和弹性常数的动脉弹性检测方法[J].振动、测试与诊断,2013,34(5):873-877.Ji Zhong,Hu Ruixing.The detection of arterial elasticity based on Photoplethysmography and elastic constant[J].Journal of Vibration,Measurement&Diagnosis,2013,34(5):873-877.(in Chinese)
[4]胡俊辉,汤强,王旭.超声纳米操控技术[J].振动、测试与诊断,2015,35(2):203-211.Hu Junhui,Tang Qiang,Wang Xu.Ultrasonic nanomanipulation technology[J].Journal of Vibration,Measurement&Diagnosis,2015,35(2):203-211.(in Chinese)
[5]李旭,霍林生,李宏男,等.混凝土结构中PZT传感器的多功能性分析及应用[J].振动、测试与诊断,2015,35(4):709-714.Li Xu,Huo Linsheng,Li Hongnan,et al.The analysis and application of multi-functional PZT sensors for health monitoring of concrete structures[J].Journal of Vibration,Measurement&Diagnosis,2015,35(4):709-714.(in Chinese)
[6]Spencer W J,Corbett W T,Dominguez L R.An electronically controlled piezoelectric insulin pump and valves[J].IEEE Transcations on Sonics and Ultrasonics,1978,25(3):153-156.
[7]阚君武,杨志刚,唐可洪,等.新结构药品输送压电泵的泵送特性[J].生物医学工程学杂志,2004,21(2):297-301.Kan Junwu,Yang Zhigang,Tang Kehong,et al.Pumping performance of a new piezoelectric pump for drug delivery[J].Journal of Biomedical Engineering,2004,21(2):297-301.(in Chinese)
[8]Xia Qixiao,Zhang Jianhui,Lei Hong,et al.Theoretical analysis and experimental verification on flow field of piezoelectric pump with unsymmetrical slopes element[J].Chinese Journal of Mechanical Engineerin,2009,22(5):735-744.
[9]张建辉,郭宗信,黄毅,等.内外不等锥度的软质锥壳形单阀体压电泵的原理与试验研究[J].机械工程学报,2010,46(24):143-149.Zhang Jianhui,Guo Zongxin,Huang Yi,et al.Theory and experiment on the soft texture and conning shaped single valve piezoelectric pump with different interior and exterior taper[J].Chinese Journal of Mechanical Engineerin,2010,46(24):143-149.(in Chinese)
[10]吴越,杨志刚,刘勇,等.压电泵设计中阀的匹配方法[J].振动、测试与诊断,2013,30(S2):33-36.Wu Yue,Yang Zhigang,Liu Yong,et al.Study on the performance optimization of check valve in piezoelectric pump[J].Journal of Vibration,Measurement&Diagnosis,2013,30(S2):33-36.(in Chinese)
[11]Hu Xiaoqi,Zhang Jianhui,Huang Yi,et al.Principle and experimental verification of caudal-fin-type piezoelectric-stack pump with variable-cross-section oscillating vibrator[J].Chinese Journal of Mechanical Engineerin,2012,25(1):128-136.
[12]胡笑奇,方雅敏,张蕊华,等.刚柔结构仿尾鳍压电双晶片无阀泵的实验研究[J].振动、测试与诊断,2015,35(3):476-480.Hu Xiaoqi,Fang Yamin,Zhang Ruihua,et al.Experimental study of caudal-fin-like piezoelectric-bimorph valveless pump with flexible-rigid structure[J].Journal of Vibration,Measurement&Diagnosis,2015,35(3):476-480.(in Chinese)
[13]阚君武,吴一辉,杨志刚,等.悬臂梁微型阀特性研究[J].哈尔滨工业大学学报,2005,37(2):190-193.Kan Junwu,Wu Yihui,Yang Zhigang,et al.Study on the performance of micro-cantilever valve[J].Journal of Harbin Institute of Technology,2005,37(2):190-193.(in Chinese)
[14]程光明,刘国君,杨志刚,等.基于悬臂梁阀的微型压电泵的实验研究[J].机械科学与技术,2005,24(10):1181-1221.Cheng Guangming,Liu Guojun,Yang Zhigang,et al.Experimental research on piezoelectric micro-pump using cantilever check valve[J].Mechanical Science and Technology,2005,24(10):1181-1221.(in Chinese)
[15]赵明丽,黄琴,张玮,等.悬臂梁阀单腔压电泵设计方法研究[J].光学精密工程,2006,14(4):607-611.Zhao Mingli,Huang Qin,Zhang Wei,et al.Investigation on design method of single chamber piezoelectric pump with cantilever valve[J].Optics and Precision Engineering,2006,14(4):607-611.(in Chinese)
[16]何丽红,侯铁成,胡忆沩.压电泵新型被动阀的结构研究[J].微计算机信息,2007,23(12-1):118-120.He Lihong,Hou Tiecheng,Hu Yiwei.Structure study of a novel passive valve for piezoelectric pump[J].Micro Computer Information,2007,23(12-1):118-120.(in Chinese)
[17]王颖,张建辉,刘瑞峰.螺旋线形阀压电泵的理论与试验研究[J].机械工程学报,2016,52(20):144-150.Wang Ying,Zhang Jianhui,Liu Ruifeng.The theoretical and experimental research on the piezoelectric pump with helical linear shaped valve[J].Chinese Journal of Mechanical Engineering,2016,52(20):144-150.(in Chinese)
[18]张英会,刘辉航,王德成.弹簧手册[M].北京:机械工业出版社,1997:304-305.