Design aimed at minimizing the leakage amount of the mechanical seal for blood sealing

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420087
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Waseda University
• Principal Investigator: Tomioka Jun 早稲田大学, 理工学術院, 教授 (40217526)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: メカニカルシール / 人工心臓 / 血液 / もれ特性

Outline of Final Research Achievements

Design aimed at minimizing the leakage amount of the mechanical seal for the rotary blood pump is revealed in this study. Firstly, each leakage characteristics of blood cell components and plasma components are revealed with the new measurement method. Each leakage characteristics is found out in detail by changing the hematocrit of the sealed blood. Secondly, the average flow model in the parallel sealing faces to provide stochastically the design guide for the surface roughness distribution on the sealing faces is proposed. The effects of the statistical properties of the surface roughness distribution on the flow factors are also found out. Finally, the lubrication characteristics of the mechanical seal considering the surface roughness effects are shown with the new average flow model. In addition, the analytical results are compared to the experimental results.

Free Research Field

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