Research on structural parameters of injection pump head flow channel based on energy dissipation analysis
10.19745/j.1003-8868.2025158
- VernacularTitle:基于能量耗散分析的注射泵泵头流道结构参数研究
- Author:
Juan LIANG
1
;
Jing WANG
;
Qing-fu SHI
;
Li-qiang ZHANG
Author Information
1. 联勤保障部队第九四○医院重症医学科,兰州 730050
- Publication Type:Journal Article
- Keywords:
injection pump;
pump head flow channel;
energy dissipation analysis;
entropy production theory;
computational fluid dynamics;
orthogonal experimental design;
proxy model
- From:
Chinese Medical Equipment Journal
2025;46(9):28-32
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the influences of the structural parameters of the pump head flow channel on the energy dissipation of injection pumps and optimize the pump head flow channel structural parameters.Methods Firstly,three structural parameters of the injection pump head flow channel,namely the input chamber diameter,the connecting chamber diameter and the plunger rod chamber diameter,were selected as the experimental factors for orthogonal experimental design,and the total entropy production values of the injection pump head flow channels with different structures were obtained through entropy production analysis;secondly,the effects of the three structural parameters on the total entropy production values were explored with the range method;finally,the Kriging interpolation proxy model analysis and computational fluid dynamics(CFD)numerical analysis of the injection pump head flow channel were carried out to determine the effects of the combinations of the three structural parameters by pairs on the total entropy production values,and the structural parameters of the injection pump head flow channel were optimized with the objective of energy dissipation.Results The minimum total entropy production value was 2 783 970 mW/K,which was 29.8%lower than that in case of the initial structure(3 966 072 mW/K),when the input chamber diameter was 4.8 mm,the connecting chamber diameter was 0.32 mm and the plunger rod chamber diameter was 1.0 mm;the three structural parameters had significant differences in the effects on the total entropy production value,ordered as the plunger rod chamber diameter,the input chamber diameter and the connecting chamber diameter;considering the energy dissipation,the total entropy production value was minimized in case of the minimal input chamber diameter,the maximal connecting chamber diameter and the medium-sized plunger rod chamber diameter.Conclusion The input chamber diameter,the connecting chamber diameter and the plunger rod chamber diameter have differences in the sensitivity to the effects on the energy dissipation of the injection pump head flow channel,and the structural parameters of the head flow path can be optimized accordingly with the goal of minimizing energy dissipation.[Chinese Medical Equipment Journal,2025,46(9):28-32]
