Diaphragm for a centrifugal compressor
AssigneeNuovo Pignone Tecnologie Srl
InventorRiccardo BROGELLI
Life of this patent
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Abstract
A diaphragm 1 for a centrifugal compressor having a rear surface 2 configured to at least partly face an impeller 3, the rear surface 2 having a first portion 2a defining at least in part a diffuser 4 and a second portion 2b facing the impeller 3; the diaphragm has a duct 5 provided with an inlet 6 and an outlet 7, the outlet 7 being located on the second portion 2b of the rear surface 2, the inlet 6 being located on the rear surface 2 at a point where the static pressure is higher with respect to the static pressure at the outlet 7.
Claims15
Diaphragm (1) for a centrifugal compressor having a rear surface (2) configured to at least partly face an impeller (3) having a central axis (C), said rear surface (2) having a first portion (2a) defining at least in part a diffuser (4), said rear surface (2) having a second portion (2b) facing said impeller (3);
- wherein said diaphragm (1) has a duct (5) having an outlet (7) located on said second portion (2b), and an inlet (6) located on the rear surface (2) at a point where the static pressure is higher with respect to the static pressure at the outlet (7).
Method for reducing a flow swirl around an impeller (3) of a centrifugal compressor, said method comprising the step of transferring a portion of working fluid from a first location (14) to a second location (15) near the impeller (3), said first location (14) having a higher static pressure than said second location (15).
Dependencies are inferred from the claim text.