Analysis and Processing of Particle Number Unqualified in Steam Turbine Lubricating Oil
Steam turbine lubricating oil system cleanness, directly affect the safe operation of the unit. Introduced in 2011, Shazhou power plant investigation for lubricating oil system of 5-15μm particle number exceed the standard ways of analysis and elimination of experience. Lubricating oil 5 to 15 tam particle number exceed the standard is the main reason of the main tank manhole door sealing is not good, the ambient air pollution caused by the particle number exceed the standard fuel tank, through rigorous plugging hole in oil are 5 - 15 μm particle number index already qualified. After the investigation after the ratio, with reference to the current domestic most similar power plant main fuel tank pressure maintained at -- 0.3-- 1.5 kPa specification, the fume exhaust fan outlet butterfly valve throttling, the No. 1 main fuel tank pressure gradually from --4.1 kPa to --1.0 kPa or so, since the operation is safe and reliable, proved that the scheme is feasible.
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