建立了刚脆性血细胞模型,并从理论上定性分析了血液通过不同最小间隙后的变化规律.研制出针对径向滑动轴承变间隙血液组分测量装置,介绍了其结构及工作原理,即通过调整轴与轴承套间相对位置以改变最小间隙,测量不同转速及最小间隙条件下出口区血细胞的压积.结果表明,出口区血细胞的压积与最小间隙及转速有关.当最小间隙hmin〈2μm时,出口区为血浆;当2μm〈hmin〈8μm时,随着hmin增加,出口区血细胞的压积增大,且在低速条件下,随着转速增加,出口区血细胞的压积迅速增大,而在高速条件下,出口区血细胞的压积随着转速增加变化不明显;当hmin〉12μm时,出口区血细胞的压积基本不变.
With establishing a rigid-fragility model of blood cell, the changing regulations of blood constituent in outgoing area of lubricant film is theoretically analyzed. Aiming to radial sliding bearing, a new device used to test blood constituent passed through the least gap under different speed is developed and the operating principle is introduced. Changing the least gap by adjusting the relative location between the axle and jewel, the hematocrit in exit area under different speeds and different least gap is tested. Result showed that the hematocrit related with the least gap and the speed of axle. When hmin 〈 2 μm, there was only plasma in outgoing area, but when 2 μm 〈 hmin 〈8 μm, the hematocrit rose rapidly with increasing of the least gap. In lower speed, the hematocrit rose more quickly with the increasing of speed than in higher speed. When hmin 〉 12 μm, the hematocrit in outgoing area was constant.