Filter cleaning system and method

Details Filter cleaning system and method Filter cleaning system and method

B - Operations, Transporting

01

D

B01D 29/66 (2006.01)

Patent

CA 2593517

A cleaning system (100) for a gas turbine inlet filter (40) mounted to a tubesheet (24). The filter (40) defines an upstream side (46) at which particulates are separated from a fluid stream passing through the filter and a downstream side (48) substantially free of the particulates. The cleaning system (100) comprises a blowpipe (124) for supplying a pressurized fluid. A one-piece nozzle (140) is made from a tubular member having a substantially constant cross-section extending along the length of the member. The nozzle (140) is permanently attached to the blowpipe (124) at a first end portion (142). The nozzle (140) is in fluid communication with the blowpipe (124) to direct a cleaning pulse of the pressurized fluid from a second opposite end portion (144) into the downstream side (48) of the filter (40) to dislodge particulates into the upstream side. An aspirator (180) is formed in the nozzle (140) at an upstream location spaced from the second end portion (144) of the nozzle. The aspirator (180) enables an additional volume of fluid to be delivered from the second end portion (144) of the nozzle (140) than is delivered from the blowpipe (124) to the first end portion (142) of the nozzle. A diffuser (200, 300, 400) is fixed to at least one of the blowpipe (124) and the nozzle (140). The diffuser (200, 300, 400) directs a portion P1 of the cleaning pulse to a proximal portion (50) of the filter (40) located adjacent to the tubesheet (24).

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