血液静电泵的碟型阀门设计  

Design of Disc Valves for Blood Electrostatic Pumps

作　　者：孙冰 刘丽[2] 张妍[2] 田丰[2] 齐景爱[2] SUN Bing;LIU Li;ZHANG Yan;TIAN Feng;QI Jing-ai(Tianjin Metrology Supervision and Testing Science Research Institute, Tianjin 300192, China;Hebei University ofTechnology, Tianjin 300401, China)

机构地区：[1]天津市计量技术研究院,天津300192 [2]河北工业大学,天津300401

出　　处：《传感器世界》2019年第5期15-23,共9页Sensor World

摘　　要：以碟型阀门为对象,利用阀门流量与碟阀开角的相对指数关系,基于流体力学关于流量与压力差、阀门管道面积、流量系数间的关系,在压力差、阀门管道面积不变的条件下,建立了流量系数与开角的指数关系。从而得到阀门实际流量与碟阀开角、压力差、阀门管道面积的具体数值关系,以设计岀碟型阀套的合适的最小半径。将血液静电泵的设计原则应用于碟型阀门设计,选用不同的流量系数计算并绘制出不同阀门半径、碟阀开角与压力差的关系图。如何选择合理的阀门半径是本文研究目的所在,以保证阀门打开时,血流畅通无阻。再由碟阀半径、开角、流速,计算了雷诺系数并核对了所选流量系数;还研究了因阀门的快启导致血流施加于碟阀上的冲击力,进行了碟阀及其把柄的强度核验。The disk valve is researched in this paper. From the exponent relationship between the flow rate and the opening angle of the disk valve, the exponent relationship between the flow coefficient and the opening angle is established under the condition of invariable valve pipeline area and pressure difference based on the hydrodynamics about the relationship among the flow rate, the pressure difference, the valve pipeline area and the flow coefficient. Then the actual flow rate of the valve is related to the opening angle, the pressure difference and the pipe area, so that the suitable minimum radius of the disk valve sleeve can be designed. The design principles of blood electrostatic pumps are applied to the design of disk valve, and the relation diagram of different valve radius, opening angle and pressure difference is drawn by using different flow coefficient. How to choose a reasonable valve radius is the purpose of this paper, in order to keep blood flow unimpeded when the disc valve is opened. The Reynolds coefficient is calculated from the disc valve radius, opening angle and flow velocity and the selected flow coefficient is checked. The impact force of the blood flow on the disk valve due to the quick opening of the valve is also studied.

关 键 词：血液静电泵 碟型阀门 开启角 流量系数 指数关系 雷诺系数 撞击力 

分 类 号：TH38[机械工程—机械制造及自动化]