粘性液体在毛细管中的流速与温度特性研究
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摘要
针对粘性液体在毛细管中流速的影响问题,分析了低温润滑油经过毛细管时流速与温度之间的特性;建立了低温润滑油运动粘度、密度与温度的模型,推导了低温润滑油动力粘度与温度的模型;通过温度试验,测得0～40℃下低温润滑油的运动粘度和密度,对实验数据进行回归分析,得到低温润滑油动力粘度与温度的模型中的参数,从而确定低温润滑油通过毛细管时流速与温度的关系式,为毛细管流速控制系统进行温度实时补偿。
To study the impact factor with the flow velocity of viscous liquid in the capillary, the velocity-temperature characteristic of cryogenic lubricating oil is analyzed in this paper. The characteristic model of kinematic viscosity and density with temperature is established. Based on the characteristic model, the model between the dynamic viscosity and temperature is derived. The temperature experiment is carried out and the kinematic viscosity and density is measured at different temperature ranges from 0℃ to 40 ℃. The experimental data is analyzed and the parameters of the model between the dynamic viscosity and temperature are identified. Then, the relationship between velocity and temperature is established when cryogenic lubricating oil passes through the capillary, which provides the basis for the temperature compensation of capillary flow-velocity system.
To study the impact factor with the flow velocity of viscous liquid in the capillary, the velocity-temperature characteristic of cryogenic lubricating oil is analyzed in this paper. The characteristic model of kinematic viscosity and density with temperature is established. Based on the characteristic model, the model between the dynamic viscosity and temperature is derived. The temperature experiment is carried out and the kinematic viscosity and density is measured at different temperature ranges from 0℃ to 40 ℃. The experimental data is analyzed and the parameters of the model between the dynamic viscosity and temperature are identified. Then, the relationship between velocity and temperature is established when cryogenic lubricating oil passes through the capillary, which provides the basis for the temperature compensation of capillary flow-velocity system.
引文
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[14] 王亚新,刘闯,宋官龙,等.NMP精致润滑油运动粘度测定的影响因素[J].当代化工,2012,41(4):435-437.
[15] 文祺然.润滑油密度的测定方法[J].合成润滑材料,2014,41(2):28-29.
[2] 黄慰怀.泊肃叶公式的适用条件[J].中国大学教育,1992(1):37-38.
[3] 路阳.非水平直圆管中黏性流体层流流量公式的推导及实验验证[J].大学物理实验,2016,29(2):30-33.
[4] 陈城彬,曹姚松,柴多云,等.冷媒补充装置及空调系统:中国,20501472,1[P].2016-02-03.
[5] 刘荣焕,高永胜,尤顺义.一种空调用新型毛细管分流组件:中国,20398074,1[P].2014-12-03.
[6] 王作弟.一种家用多功能自动血液测试设备:中国,20664903,8[P].2017-11-17.
[7] 路阳.关于泊肃叶定律的适用范围和定律的修正的讨论[J].物理通报,2016(4):29-32.
[8] 周宏志.原油粘温公式的精度分析[J].炼油与化工,2009,20(3):8-10.
[9] 李兴虎,赵晓静.润滑油粘度的影响因素分析[J].润滑油,2009,29(4):59-64.
[10] 董浩德,李方义,李国彦,等.推土机变速箱用润滑油黏温特性研究[J].润滑与密封,2016,41(8):39-42.
[11] Noureddini H,Teoh B C,Clements L D.Viscosities of vegetable oils and fatty acids[J].Journal of the American Chemical Society,1992,69(2):1189-1191.
[12] Singh A K,Mukherjee P S.Interrelationship among viscosity,temperature and age of lubricant[J].Industrial Lubrication and Tr-ibology,2006,58(1):50-55.
[13] Monnery W D,Svrcek W Y,Mehrotra A K.Viscosity:a critical review of practical predictive and correlative methods[J].The Canadian Journal of Chemical Engineering,1995,73:3-40.
[14] 王亚新,刘闯,宋官龙,等.NMP精致润滑油运动粘度测定的影响因素[J].当代化工,2012,41(4):435-437.
[15] 文祺然.润滑油密度的测定方法[J].合成润滑材料,2014,41(2):28-29.