Double cone for generation of a pressure difference

Details Double cone for generation of a pressure difference Double cone for generation of a pressure difference

F - Mech Eng,Light,Heat,Weapons

04

F

F04F 5/46 (2006.01) B01D 61/02 (2006.01) B01D 61/10 (2006.01) C02F 1/44 (2006.01)

Patent

CA 2391835

The lifetime of a double-cone device (21) for creating a pressure difference in a streaming fluid can be greatly increased by moving the inlet gap (5) into the exit cone (4). This results in a short so-called diffuser (22) being obtained between the gap (5) and the orifice (19), where entry cone (3) and exit cone (4) are connected. The increased lifetime permits the double-cone device to cope with much higher flow rates. Thus higher system pressures are created which enhance the use of the double-cone for such applications as the desalination of sea water by reverse osmosis. The important application of the separation of oil from water using a separating device such as a cyclone (57) working under elevated pressure is now feasible. The increased power of the double-cone permits one to profit more fully from the new concept of reduction of the concentration of the feed supplied to the double-cone device (21).

Il est possible d'augmenter considérablement la durée de service d'un dispositif bicône (21) utilisé pour créer un différentiel de pression dans un flux de liquide en déplaçant la fente d'admission (5) vers l'intérieur du cône de sortie (4). On obtient ainsi un </= diffuseur </= (22) court entre la fente (5) et l'ajutage (19), là ou le cône d'entrée (3) et le cône de sortie (4) se rejoignent. Grâce à sa durée de service accrue, le dispositif bicône peut supporter des débits beaucoup plus importants. Il en résulte des pressions plus élevées qui favorisent l'utilisation du bicône dans des applications telles que la dessalement de l'eau de mer par osmose inverse. Il est désormais possible d'utiliser pour la séparation de l'huile et de l'eau (application importante) un dispositif de séparation tel qu'un cyclone (57) fonctionnant sous une pression accrue. Le surcroît de puissance du bicône permet de mieux exploiter la nouvelle approche de diminution de concentration du flux allant alimenter le dispositif bicône (21).

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