Filter assembly

摘要

A filter assembly is provided which is particularly suitable for use in filtering intake air for gas turbines. The filter assembly (6) includes a final filter (9) and a pre-filter (8) which are directly engageable one with the other to provide a complete filter assembly. By so providing, pre-filter units may easily be removed and replaced in a compact configuration. A kit of parts is also provided.

主权项

1. A filter assembly, comprising:
a filter casing for mounting to a mounting frame of a duct, the filter casing having a plurality of inlet apertures, each inlet aperture being associated with a respective filter cell of the casing and being adapted to permit gas to flow through the casing from the inlet apertures; a filter medium provided to each filter cell of the casing to filter for filtering gas flowing through the casing; and a plurality of pre-filters, each pre-filter comprising: a pre-filter casing having an outlet aperture and being adapted to permit gas to flow through the pre-filter casing to the outlet aperture; and a pre-filter medium provided to the pre-filter casing to filter gas flowing through the pre-filter casing, wherein each pre-filter casing is releasably engaged directly with the filter casing so as to fixedly position the outlet aperture of the pre-filter casing, directly or via an interposed sealing gasket, over an inlet aperture of the filter casing, thereby to seal the inlet and outlet apertures together.