TITLE:
Investigation of Oil Vapours in Hydro-Generator
AUTHORS:
Ekaterina Shubina, Dmitry Verkhovtsev, Stanislav Gulay, Andrey Lyamin
KEYWORDS:
Hydro-Generator, Cooling, Oil Mist, Bearings, Fluid Dynamics
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.12 No.3,
March
19,
2024
ABSTRACT: The
article discusses engineering approaches to solving the problem of oil vapours in generators. Due to the design
characteristics of each power plant, it is difficult to find a typical
solution. Nevertheless, the article suggests ways to reduce the amount of oil
mist. For their implementation, a calculation methodology based on the
substitution scheme of the hydraulic path of the bearing support unit is
created which takes into account the design features of the bearing and the
parameters of the environment around the oil bath. The methodology employed is
presented. The
numerical method of modelling the aerodynamic fields of the entire hydro
generator is used to estimate the air flows and pressures in
the oil bath zone of the thrust bearing. Additionally, the method made it
possible to track suspected oil particles that could get from the thrust-bearing bath into the
surrounding area of the generator. Measures are proposed to reduce the level of
oil mist through the competent design of the oil vapour removal system from the bearing bath.