Performance Calculation and Experimental Study for Marine Axial Compressor Thrust Bearing
In order to obtain a newly-designed thrust bearing operating characteristics in a marine axial compressor and conduct test verification,thrust bearing characteristics simulation calculation was carried out based on ARMD-Bearings software and self-developed program.Bearing performance tests were con-ducted on the full-scale high speed and high thrust sliding bearing test bed.Further more,the bearing pad temperatures were monitored in the real gas turbine bench test.The relationships among the thrust load,rotating speed and the characters of oil film pressure,thickness,temperature,stiffness,damping and power loss were analyzed under 15 working conditions.In the bearing performance experiments,per-formance experiment was conducted under 9 kinds of stable working conditions and each pad surface tem-perature and oil film pressure were measured under overload and overspeed conditions.The results show that the variation law of the oil film temperature and pressure versus thrust and rotating speed obtained by experimental test are identical with the simulation calculation results;the biggest oil film pressure on the bearing pad surface is around the support block back and linear with the thrust;the lower the rotating speed and the bigger the thrust,the thinner the oil film thickness and the bigger the oil film stiffness and damping;the higher the rotating speed and the bigger the thrust,the higher the oil film temperature and power loss;there is a margin of safety of the thrust bearing operating parameters at the design point.The thrust bearing can meet the engine running requirements.
thrust bearingperformance calculationexperimental studyoil film pressureoil film tem-perature
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