Impact Of Recent Tilting Pad Thrust Bearing Tests On Steam Turbine Design And Performance
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Recent test programs on Kings bury type tilting pad thrust bearings have altered application data and required the use of larger thrust bearing sizes with correspondingly larger oil flows and increased power loss. These results have had a significant impact on the design and performance of mechanical drive steam turbines, especially for high horsepower applications where thrust bearings operate in the superlaminar or turbulent flow regime. The authors cite data obtained from separate test programs at General Electric and Kingsbury. Details are presented of a large thrust bearing test facility at the General Electric Mechanical Drive Turbine Products Department capable of testing bearing at speeds up to 14,000 rpm and loadings up to 60,000 pounds. Results of tests on bearings ranging in size from 12 inches to 17 inches are summarized along with the important conclusions relative to power loss, load-carrying capability, and oil flow optimization. Examples are presented to demonstrate the application of the new design data and its effect on the design of mechanical drive steam turbines.
King, T. L.; Capitao, J. W. (1975). Impact Of Recent Tilting Pad Thrust Bearing Tests On Steam Turbine Design And Performance. Texas A&M University. Gas Turbine Laboratories. Available electronically from