MAINTENANCE REDUCTION for LUBE OIL PUMPS（维修减少润滑油泵）.pdf

George Ponton MAINTENANCE REDUCTION for LUBE OIL PUMPS ABSTRACT Thus all USN War Ships constructed in the last 40 years have pumps installed in The fleet is plagued with leaking lube oil accordance with that specification, as pumps due to mechanical shaft seal failures. modified for the particular program. The Correction programs have resulted in pumps are positive displacement rotary improved shaft sealing techniques however, screw pumps of two types: Timed (type II) there continues to be a leakage and untimed (type III). problem on most classes of ships. The function of the pumps is to provide lubricating oil to the propulsion machinery The ultimate solution is to eliminate the for gearbox and turbine bearing lubrication mechanical shaft seal. This has been proven and cooling. to be a very successful solution and has additional benefits of eliminating the motor The fluid being pumped is turbine/reduction to pump coupling, which further reduces gear lubricating oil [Mil-L-17331, 1992], maintenance. commonly called 2190 TEP. The fluid is used for Main Reduction Gear Lubrication The newly developed Canned Lube Oil on all Steam and Gas Turbine Powered Pump is the solution. Ships, and in some hydraulic system