离心泵用推力滑动轴承的静态特性优化仿真

Optimization Simulation of Static Characteristics of Thrust Sliding Bearings for Centrifugal Pumps

建立了离心泵用推力滑动轴承的物理模型,编写数值计算程序并对不同结构参数的轴承进行数值仿真分析。通过仿真结果发现,内径为14mm、外径为28mm的轴承最佳扇形瓦块数为6、最佳楔形进口高度为28μm、最佳楔形区域占比为0.4。通过对不同润滑膜厚度的轴承进行数值仿真,发现轴承承载力和摩擦力矩均随着润滑膜厚度的增加而不断减小。在推力滑动轴承设计过程中,需对轴承的结构及润滑膜厚度进行优化设计以达到最佳的性能,以防止出现因承载力不足导致轴承失效的状况,此次仿真结果为轴承设计提供了参考。

The physical model of thrust sliding bearing for centrifugal pump is established,numerical calculation program is written and numerical simulation analysis is carried out for bearings with different structural parameters.The simulation results show that the optimum number of pads is 6,the optimum wedge inlet height is 28μm and the optimum wedge area ratio is 0.4 for a bearing with different lubrication film thickness.In the process of thrust sliding bearing design,the bearing structure and lubricating film thickness need to be optimized to achieve the best performance,to prevent the bearing failure due to insufficient bearing capacity,the simulation results provide a reference for the bearing design.