论文部分内容阅读
本文以紊流工况下的大型椭圆轴承为对象,通过试验和计算:(1)探讨了椭圆轴承中润滑油膜的流态由层流向紊流的转变点、影响转变的因素和判据,紊流系数的选取;热态工况和紊流流道中出现层流段对轴承性能的影响等;(2)分折了紊流工况下椭圆轴承的性能以及长径比、间隙比、椭圆比、进油压力、温度等时轴承性能的影响。在研究的过程中建立了一套适用于紊流工况轴承性能研究的试验手段和计算方法,为今后进一步研究大型透平发电机组径向滑动轴承的设计、计算和运行提供可靠的基础。
In this paper, a large oval bearing under turbulent flow conditions is taken as an object, through the experiment and calculation: (1) The transition point from the laminar flow to the turbulent flow and the factors and criteria affecting the transition Flow coefficient selection; hot condition and turbulent flow channel appears laminar flow section of the bearing performance; (2) the turbulent flow conditions elliptical bearing performance and the aspect ratio, clearance ratio, elliptic ratio , Into the oil pressure, temperature, etc. bearing the impact of performance. In the course of the research, a set of test methods and calculation methods that are suitable for the study of bearing performance under turbulent flow conditions are established, which will provide a reliable basis for the further research on the design, calculation and operation of radial plain bearings of large turbogenerator units in the future.