TY - GEN
T1 - The analysis in dynamic characteristics for check valve of water micro-piston pump
AU - Yin, Shen
AU - Yin, Tuyuan
AU - Hu, Ziyang
AU - Liu, Xiaoqing
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - Micro-piston pumps are widely used in many aspect like quantitative transportation of petroleum, chemical industry, medicine, biology , water treatment , etc. This is especially for high pressure and small flow accurate transportation, valve ball lag closure has an important impact on flow accuracy. In this paper, the dynamic model of check ball valve for conveying water viscosity medium is established, the second-order non-linear equation is solved numerically, and the dynamic characteristics of the outlet valve are calculated for a piston pump driven by crank mechanism. The results show that the self-weight check ball valve converges at different crank speeds, but exists a certain closing lag. When the minimum critical spring force is 60% of the valve's selfweight, the ball valves are closed without delay. The opening displacement of the valve ball fluctuates. There is a large acceleration impact on the opening of the valve ball. When the valve ball is close to closing, it has obvious acceleration. The rising acceleration with spring occurs ahead of time, which can avoid the closing lag. It is necessary to calculate the actual pump to ensure the accuracy of pump flow.
AB - Micro-piston pumps are widely used in many aspect like quantitative transportation of petroleum, chemical industry, medicine, biology , water treatment , etc. This is especially for high pressure and small flow accurate transportation, valve ball lag closure has an important impact on flow accuracy. In this paper, the dynamic model of check ball valve for conveying water viscosity medium is established, the second-order non-linear equation is solved numerically, and the dynamic characteristics of the outlet valve are calculated for a piston pump driven by crank mechanism. The results show that the self-weight check ball valve converges at different crank speeds, but exists a certain closing lag. When the minimum critical spring force is 60% of the valve's selfweight, the ball valves are closed without delay. The opening displacement of the valve ball fluctuates. There is a large acceleration impact on the opening of the valve ball. When the valve ball is close to closing, it has obvious acceleration. The rising acceleration with spring occurs ahead of time, which can avoid the closing lag. It is necessary to calculate the actual pump to ensure the accuracy of pump flow.
KW - Ball falve closing lag
KW - Dynamic characteristics of ball valve
KW - Reciprocating piston pump
KW - Self-Weight check ball valve
KW - The water medium transportation
UR - https://www.scopus.com/pages/publications/85083039262
U2 - 10.1109/FPM45753.2019.9035765
DO - 10.1109/FPM45753.2019.9035765
M3 - 会议稿件
AN - SCOPUS:85083039262
T3 - Proceedings of the 8th International Conference on Fluid Power and Mechatronics, FPM 2019
SP - 1307
EP - 1312
BT - Proceedings of the 8th International Conference on Fluid Power and Mechatronics, FPM 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE International Conference on Fluid Power and Mechatronics, FPM 2019
Y2 - 10 April 2019 through 13 April 2019
ER -