Casing for a moving-blade wheel of a turbomachine

Details Casing for a moving-blade wheel of a turbomachine Casing for a moving-blade wheel of a turbomachine

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 27/02 (2006.01) F04D 29/16 (2006.01) F04D 29/52 (2006.01) F04D 29/54 (2006.01) F04D 29/66 (2006.01) F04D 29/68 (2006.01)

Patent

CA 2718847

Casing (10) for a moving-blade wheel (100) of a turbomachine, comprising a plurality of circumferential slots (11,12,13) having substantially constant cross sections, and wherein the area of the cross section (S1,S2,S3) of the circumferential slots (11,12,13) decreases in the upstream to downstream direction from the first slot (11) to the last slot (13). As a result of the casing being processed in this way, the efficiency of the moving-blade wheel is optimized and the surge margin is improved.

Carter (10) pour roue à aubes mobiles (100) de turbomachine, comportant une pluralité de rainures circonférentielles (11,12,13), de sections sensiblement constantes, et dans lequel la surface de la section (S1,S2,S3) des rainures circonférentielles (11,12,13) est décroissante de l'amont vers l'aval de la première (11) à la dernière (13) rainure. Grâce à ce traitement de carter, le rendement de la roue à aubes mobiles est optimisé et la marge au pompage est améliorée.

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