SUN Xiao-Feng, YANG Zhi-Gang, HE Ye-Rong, SHAO Ze-Bo
(1. Department of Machinery and Electricity Engineering, Jilin Institute of Chemical Technology, Jilin, Jilin 132022, China; 2.College of Mechanical Science and Engineering, Jilin University, Changchun, Jilin 130025, China; 3.Jilin Machinery Manufacture Branch,PetroChina Northeast Refining ＆ Chemical Engineering Co. Ltd., Jilin, Jilin 132021, China)
Abstract：In order to fabricate gas piezoelectric pumps with better performance, a new type of umbrellashaped rubber valve was designed. The discharge coefficient of that valve was analyzed, and the valve performance was simulated by applying Ansys software. Consequently, the natural frequencies from first to tenth order and the critical pressure difference across the valve under which it will be failure were determined. The results showed that the pump breaks down, i.e., its valve cannot close by itself properly due to a too large opening height, if the pressure difference across the valve is higher than the critical value 800 Pa, when working at a frequency lower than the firstorder natural frequency of the valve. Also, the thermal performance of the piezoelectric vibrator was measured when pumping air. It was showed that the temperature of the vibrator at thermal equilibrium is less than 70 ℃ when it was driven 110 V voltage at a less than 400 Hz frequency. A singlechamber gas piezoelectric pump with the newly designed umbrella rubber valve was tested by using air and water. It was showed that for air the optimum working frequency is 380 Hz, and the maximum output flowrate and pressure are 1 889 mL/min and 5.1 kPa; for liquid, however, the best working frequency is 240 Hz, and the maximum output flowrate and pressure are 300 mL/min and 25.0 kPa. These results confirm that the singlechamber gas piezoelectric pump has a better capability of pumping gas.
孙晓锋, 杨志刚, 贺业荣, 邵泽波. 单腔体气体压电泵设计[J]. 排灌机械工程学报, 2013, 31(3): 200-204.
SUN Xiao-Feng, YANG Zhi-Gang, HE Ye-Rong, SHAO Ze-Bo. Design of singlechamber gas piezoelectric pump. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(3): 200-204.
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