FIELD: separation.
SUBSTANCE: invention relates to a filter system for filtering air at the inlet of a gas turbine. Filter system comprises first filter (25) and second filter (29), located downstream from the first filter and having a higher collection efficiency than first filter (25). Guard filter (31), having a lower collection efficiency than first filter (25), is located between first filter (25) and second filter (29).
EFFECT: technical result: high filtration efficiency.
19 cl, 3 dwg
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