Transactions of Nanjing University of Aeronautics & Astronautics
A Flexible Valve Based Piezoelectric Pump for High Viscosity Cooling Liquid Transportation
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Abstract:
A piezoelectric pump with flexible valve has been developed to pump high viscosity cooling liquid in the nanosats thermal control system. The structure of the flexible valve is designed according to the characteristics of the human aortic shape with the aim to simulate the bionic pumping function of the human heart. Dynamic stress-strain features of the flexible valve are analyzed by the finite element method， and the results show that the proposed flexible valve is suitable and functional for the piezoelectric pump. Then the cylinder and diffuser/nozzle piezoelectric pumps based on flexible valves have been developed and fabricated. Experimental results of the output performance indicate that the maximum flow rate of the cylinder piezoelectric pump with flexible valve is 15.38 mL/min， 170.77% higher than the diffuser/nozzle piezoelectric pump with flexible valve. The ability of the cylinder piezoelectric pump with flexible valve for transmitting high viscosity liquid has been validated. The piezoelectric pump with flexible valve has potential applications in the nanosats thermal control system.
Keywords:
piezoelectric pump ; high viscosity liquid ; flexible valve ; cut-off performance ; pumping performance
Project Supported:
This work was supported by the National Natural Science Foundation of China （Nos. 51605200， 61973207）， the Natural Science Foundation of Shanghai（No.19ZR1474000）， the Senior Talent Start-up Foundation of Jiangsu University （No.14JDG145）， and the Foundation of State Key Laboratory of Mechanics and Control of Mechanical Structures of Nanjing University of Aeronautics and Astronautics （No.MCMS-E-0320G01）.
Clc Number:
TH38
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