高速旋转圆管流体输运模型研究

Study on the Fluid Transport Model of the High Speed Rotary Tube

研究旋转圆管的通流特性.结合流体力学的基本原理,建立了分析模型,通过试验结果验证了模型的精度,分析了通流特性及其影响因素.研究结果表明:旋转圆管流量随转速与供油压力的变化而变化.且在转速增加初期,流量变化较小,随着转速的增大,通流能力减弱趋势增大.配流孔孔径和个数的增加均可提高通流特性;配流孔的外径影响着孔内外离心压差,过大的外径在较高转速时会导致进油困难.在高速行星传动机构润滑流量分配系统设计中需要考虑旋转圆管流通特性的影响.

The through-flow characteristics of the rotary tube was studied. Based on the fluid mechanics, the analytical model of the system was built. The through-flow characteristics of the rotary tube and the influencing factors were investigated in experiments. The results indicate that the flow rate of rotary tube changes with speed and oil pressure changes. In the early stage of speed increasing, flow rate change is small. As the speed increases, the weakening trend of flow ability also increases. The through-flow characteristics are positively correlated with size and number of the flow orifice. The outer diameter of the flow orifice has an effect on the centrifugal pressure and oversized outer diameter will cause oil inlet difficulties at high speed. It is necessary to consider the effects listed above in the lubrication system design of the high speed planetary transmission.