An Experimental Study on the Influence of Spring Support Structures and Hydrostatic Recess Areas on the Characteristics of Hybrid Tilting Pad Bearings Lubricated by High-Pressure CO2

The purpose of this study is to explore the influence of different spring support structures and hydrostatic recess areas on the characteristics of hybrid tilting pad bearings lubricated by high-pressure CO2 to promote the development of high-pressure CO2-lubricated bearings. A high-pressure CO2 hybrid tilting pad bearing experiment system was designed and built, and performance comparison experiments were carried out under various speed and load conditions. The performance differences of bearings with different spring support structures and hydrostatic recess areas under high-pressure CO2 lubrication were obtained. The results show that compared with the bearing structure, the bearing stiffness has a more significant effect on the bearing performance. The design of the bearing should consider the matching of stiffness and rotor dynamics.