(1) Cleaning of exhaust gas turbocharger of diesel generator
① Corrosive cleaning solution is not allowed to clean all parts.
② soak the carbon deposits and deposits on the parts in the cleaning solution to make them soft. Among them, the bright oil return in the middle is lighter than the fouling at the turbine end.
③ Only use plastic scraper or bristle brush to clean or scrape aluminum and copper parts
④ If steam impact cleaning is used, the journal and other bearing surfaces should be protected.
⑤ compressed air should be used to clean the lubricating oil channels on all parts.
(2) Inspection of exhaust gas turbocharger of diesel generator
Do not clean all parts before appearance inspection to analyze the cause of damage. The main parts to be inspected are listed below. D the original damage of the ring surface and the outer surface of the floating bearing is now observed. Under normal circumstances, after long-term operation, the good pot layer on the outer surface of the meat still exists, but the inner surface of the outer circle surface is large, and there are some wear marks on the end surface with oil grooves, which are normal. The groove drawn on the working surface of the floating ring is caused by unclean lubricating oil. If the surface notch is heavier than A or it is measured to be more worn, it is recommended to replace it with a new floating ring.
The rotor shaft 5 is on the working shaft collar of the rotor. If you mold its working surface with your fingers, you should not feel obvious grooves: observe the carbon deposit at the sealing ring groove at the turbine end and the abrasion of the side wall of the ring groove; observe whether the inlet and outlet edges of the turbine blades are bent or broken; whether there are cracks at the outlet edges of the blades and whether there are burrs at the top of the blades caused by rubbing; Whether the turbine blade governor is bruised, etc.
compressor impeller 4, check whether the back of the impeller and the top part of the blade are rubbed or not: check whether the blade is bent or broken; check whether there are cracks at the edge of the inlet and outlet of the blade and whether it is damaged by foreign objects.
Pay attention to observe the degree of oil deposition on the surface of each flow channel and analyze the causes of the above-mentioned bad situation.
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