碟簧支承高速圆瓦推力轴承性能分析及标高误差影响研究  

Performance Analysis and Influence of Elevation Error on High Speed Circular Pad Thrust Bearing Supported by Disc Springs

作　　者：张帆[1] 胡志建 李振华 王建梅[1] 袁小阳[2] ZHANG Fan;HU Zhijian;LI Zhenhua;WANG Jianmei;YUAN Xiaoyang(Engineering Research Center of Heavy Machinery of Ministry of Education,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System,Xi’an Jiaotong University,Xi’an Shaanxi 710049,China)

机构地区：[1]太原科技大学重型机械教育部工程研究中心,山西太原030024 [2]西安交通大学现代设计及转子轴承系统教育部重点实验室,陕西西安710049

出　　处：《润滑与密封》2024年第6期1-8,共8页Lubrication Engineering

基　　金：国家重点研发计划项目(2022YFB4201100);国家自然科学基金项目(51805409);太原科技大学博士科研启动基金项目(20212013,20202010)。

摘　　要：针对立式干气密封氦气压缩机轴系用高速圆瓦推力轴承承载性能问题,建立碟形弹簧支承推力轴承的润滑性能计算模型和搅拌功耗计算公式,分析圆形瓦推力轴承随转速、载荷的性能变化规律及标高误差对轴承润滑性能和支承碟形弹簧性能的影响。研究表明:轴承搅拌功耗与摩擦功耗的比值随转速和载荷的增大分别增大和减小,最高转速下搅拌功耗是摩擦功耗的两倍以上;弹性自适应调节技术可以有效改善瓦块标高误差对轴承承载平面度的影响,但各瓦标高误差越大,各瓦润滑性能及碟形弹簧积累的变形能差异也越大。因此,对于高速立式转子系统,推力轴承设计必须考虑搅拌功耗对轴承温升的影响,同时需要进一步研究标高误差对转子高速稳定性的影响。Regarding the load-bearing performance of high-speed circular pad thrust bearings used in the shaft system of vertical dry gas sealed helium compressors,a lubrication performance calculation model and a stirring power consumption calculation formula for disc spring supported thrust bearings were established.Based on the model,the performance variation of circular pad thrust bearings with rotational speed and load were analyzed,and the influence of elevation error on bearing lubrication performance and support disc spring performance were also analyzed.The results show that the ratio of stirring power consumption to friction power consumption in bearings increases and decreases with the increase of speed and load,respectively.At the highest speed,stirring power consumption is more than twice that of friction power consumption.The elastic adaptive adjustment technology can effectively improve the impact of elevation error on the flatness of bearing pads.However,the larger the elevation error,the greater the difference in lubrication performance of each pad and the accumulated deformation energy of the disc springs.Therefore,for high-speed vertical rotor systems,the design of thrust bearings must consider the impact of stirring power consumption on bearing temperature rise,and further research is needed on the impact of elevation error on the stability of high-speed rotor systems.

关 键 词：圆形瓦推力轴承 标高误差 碟形弹簧 立式氦气压缩机 

分 类 号：TH133[机械工程—机械制造及自动化]