Diffuser construction for a centrifugal compressor

Details Diffuser construction for a centrifugal compressor Diffuser construction for a centrifugal compressor

F - Mech Eng,Light,Heat,Weapons

04

D

230/131

F04D 29/44 (2006.01) F01D 17/14 (2006.01)

Patent

CA 1252075

DIFFUSER CONSTRUCTION FOR A CENTRIFUGAL COMPRESSOR Abstract of the Disclosure Constant flow width through the last stage diffuser of a centrifugal compressor is maintained against widening by the forces of differential pressure via a diffuser defined between oppositely positioned radial faces of a diaphragm and an annular diffuser plate secured spaced from the diaphragm at the desired with. Enabling the diffuser plate to withstand width deflection and/or enlargement is a pressure balance imposed against the rear surface of the plate as compared to the pressure level incurred from the gas flow at the front surface facing the diaphragm. This is achieved by a sealed radial cavity exposed to the rear surface of the plate and in continuous pressure communica- tion with the front surface through a plurality of vent holes extending therebetween.

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