Development for DWT-70A oil-free compressor used in plateaus electric locomotive system

In order to address the supporting equipment demands for constructing electrified railroads in the western plateau regions of China,oil-free air compressor for pantograph system of type DWT-70A plateau railway electric locomotives was developed.According to the high altitude working conditions in Tibet,Qinghai and other provinces,research and design were carried out on thermal calculation of compressor,motors,piston rings,guide rings,lubrication,etc.and simulation tests for vibration,shock,high altitude working conditions.The results show that the compressor has stable performances,which fully meets the requirements of working conditions of plateau regions.