[1]李子鹏,汤晓燕,云忠,等.流道型轴流血泵支承结构设计与分析[J].中国医学物理学杂志,2021,38(6):732-736.[doi:DOI:10.3969/j.issn.1005-202X.2021.06.014]
　LI Zipeng,TANG Xiaoyan,YUN Zhong,et al.Design and analysis of the support structure of flow-channel type axial-flow blood pump[J].Chinese Journal of Medical Physics,2021,38(6):732-736.[doi:DOI:10.3969/j.issn.1005-202X.2021.06.014]
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流道型轴流血泵支承结构设计与分析()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
38卷
期数:
2021年第6期
页码:
732-736
栏目:
医学信号处理与医学仪器
出版日期:
2021-06-29

文章信息/Info

Title:
Design and analysis of the support structure of flow-channel type axial-flow blood pump
文章编号:
1005-202X（2021）06-0732-05
作者:
李子鹏1; 汤晓燕2; 云忠2; 冯龙飞2
1.中南大学轻合金研究院， 湖南 长沙 410083； 2.中南大学机电工程学院， 湖南 长沙 410083
Author(s):
LI Zipeng1;  TANG Xiaoyan2;  YUN Zhong2;  FENG Longfei2
1. Light Alloy Research Institute, Central South University, Changsha 410083, China 2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
关键词:
血泵; 流道; 磁液悬浮; 磁力; 液力
Keywords:
Keywords: blood pump flow channel magnetic fluid suspension magnetic force hydraulic force
分类号:
R318；TH312
DOI:
DOI:10.3969/j.issn.1005-202X.2021.06.014
文献标志码:
A
摘要:
目的：为了改善电磁轴承结构复杂、体积偏大，液力轴承承载力小、不能在较大负载下工作的弊端，提出一种流道型磁液悬浮轴流血泵，提高血泵承载能力。方法：流道型轴流血泵轴向采用永磁力进行支承，径向采用转子叶轮的流道结构产生的液力悬浮；利用Ansys对轴向瞬态磁场进行仿真，对磁力变化进行研究，利用Fluent对不同开槽方向、角度、深度的径向液力进行仿真，对液力变化进行研究。结果：根据轴向磁力随位移的变化，得出磁力最大为2.9 N，楔形开槽结构倾斜角为28°，开槽数为5，槽深0.36 mm，叶顶间隙为0.40 mm，性能达到最优，能满足人体使用。结论：流道型轴流血泵相对于普通磁液悬浮血泵有更高的承载力，较好的悬浮性能，为轴流血泵的优化研究提供了新的思路。
Abstract:
Abstract: Objective To alleviate the problems of electromagnetic bearings (complex structure, large volume) and hydraulic bearings (small bearing capacity, no longer able to work under large loads), a flow-channel type magnetic fluid suspension axial-flow blood pump is proposed to improve the bearing capacity of blood pump. Methods The flow-channel type axial-flow blood pump was supported by permanent magnetic force in the axial direction, and the hydraulic suspension generated by the flow channel structure of the rotor impeller was used in the radial direction. The axial transient magnetic field was simulated by Ansys for studying the changes of magnetic forces, and Fluent was used to simulate radial hydraulic forces with different slotting directions, angles and depths, thereby investigating the changes of hydraulic forces. Results The analysis on the changes of axial magnetic forces with displacements revealed that the proposed blood pump had the most excellent performance, when the maximum magnetic force, the inclination angle of the wedge-shaped slotted structure, the number of slots, the depth of the slot and the tip clearance were 2.9 N, 28°, 5, 0.36 mm and 0.40 mm, respectively, meeting the requirements of application in human body. Conclusion The flow-channel type axial-flow blood pump has higher bearing capacity and better suspension performances than the ordinary magnetic fluid suspension blood pump, which provides a new idea for the optimization of axial-flow blood pump.

相似文献/References:

[1]张伟国,程云章,胡 平,等.离心血泵内部流场数字模拟及溶血分析[J].中国医学物理学杂志,2014,31(02):4814.[doi:10.3969/j.issn.1005-202X.2014.02.022]
[2]冯龙飞,云忠,徐军瑞,等. 一种轴流血泵的磁液双悬浮支承系统[J].中国医学物理学杂志,2018,35(8):939.[doi:1005-202X（2018）08-0939-06DOI]
　FENG Longfei,YUN Zhong,XU Junrui,et al. Magnetic-hydraulic suspension supporting system for axial blood pump[J].Chinese Journal of Medical Physics,2018,35(6):939.[doi:1005-202X（2018）08-0939-06DOI]
[3]巫伟强,谭建平,王帅,等. 轴流式血泵无位置传感驱动控制系统设计[J].中国医学物理学杂志,2019,36(1):77.[doi:DOI:10.3969/j.issn.1005-202X.2019.01.015]
　WU Weiqiang,TAN Jianping,WANG Shuai,et al. Design of sensorless drive control system for axial flow blood pump[J].Chinese Journal of Medical Physics,2019,36(6):77.[doi:DOI:10.3969/j.issn.1005-202X.2019.01.015]

备注/Memo

备注/Memo:
【收稿日期】2020-12-14 【基金项目】湖南省自然科学基金（2019JJ40364）；国家自然科学基金（31670999） 【作者简介】李子鹏，硕士研究生，主要研究方向：生物机械系统设计， E-mail: lizipengzzu@163.com 【通信作者】汤晓燕，副教授，主要研究方向：仿生机械设计与制造，E-mail: txy@csu.edu.cn
更新日期/Last Update: 2021-06-29