(1) Cleaning of exhaust gas turbochargers for diesel generators
(1) It is not allowed to clean parts with corrosive cleaning fluids.
(2) Soak the parts in the cleaning solution to make them loose. Among them, the middle bright oil return light the dirt at the inner turbine end.
(3) Aluminum and copper parts should only be cleaned or scraped with a plastic spatula or bristle brush
(4) If cleaning with steam shock, the journal and other bearing surfaces should be protected.
(5) Compressed air should be applied to clean the lubricating oil channels on all parts.
(2) inspection of exhaust gas turbochargers for diesel generators
visual inspection, do not clean the parts in order to analyze the cause of the damage. The main components to be inspected are listed below. D Floating bearings now observe the original loss of the ring surface and the outer surface of the meat. Under normal circumstances, after long-term operation, the good pot layer on the outer surface of the meat still exists, while the outer surface grinding and the inner round surface is large, and there are slight wear marks on the end face with oil groove, which is normal. The grooves drawn on the working surface of the floating ring are caused by unclean lubricating oil, if the surface notch is heavier or more than worn by measurement, it is recommended to replace the floating ring with a new one.
wheel rotor shaft 5 on the rotor working shaft collar, with your fingers to mold its working surface, should not feel that there is an obvious groove: observe the carbon deposits at the turbine end sealing ring groove and the wear of the ring groove sidewall: observe whether there is bending and fracture at the inlet and outlet edge of the turbine blade: whether there is crack at the edge of the blade outlet and whether there is a crimped burr caused by friction on the top of the blade; Whether the turbine blade has a bump and scratch phenomenon, etc.
compressor impeller 4 to check whether there is friction on the back of the impeller and the top part of the blade: check whether the blade has bending and breakage: whether there are cracks and bruises by foreign objects at the edge of the inlet and outlet of the blade.
bladeless shell 3 and compressor casing 1 to check the friction of the arc part on each bodyless body or whether there is a phenomenon of being detected by parallel objects. Pay attention to observe the degree of oil deposition on the surface of each flow channel and analyze the causes of the above adverse conditions.