EP 0781929 B1 20030319 - Device for pumping or compressing a multi-phase fluid comprising tandem blading
Title (en)
Device for pumping or compressing a multi-phase fluid comprising tandem blading
Title (de)
Vorrichtung zum Pumpen oder Verdichten eines mehrphasigen Fluids mit einer Tandem Beschaufelung
Title (fr)
Dispositif de pompage ou de compression d'un fluide polyphasique à aubage en tandem
Publication
Application
Priority
FR 9515624 A 19951228
Abstract (en)
[origin: EP0781929A1] The pumping system comprises a hollow casing having an inlet orifice and a fluid outlet orifice. A rotor rotates inside the casing. The rotor comprises a hub with a blade (Gj) fixed to the hub. The blade has a first (A1j) and second (A2j) blades each having a leading edge (aij) and a trailing edge (fij). The angle making tangent to the curve of the outline leaving from the leading edge to one of the first or second blades relative to the peripheral or tangential direction of the system is between 0 and 45 degrees . The relative positioning of the different groups of blades is determined from a parameter chosen from four parameters. The tangential gap (h) relative to the pitch (t) expressed as the ratio h/t is between 0.60 and 0.8. The ratio of the axial overlap rj to the total chord CTj corresponding to a group of blades Gj is between -0.01 and 0.05. The chord ratio CFj/CRj) is between 0.5 and 1.5. The curvature ratio of the first blade to the second blade is between 0.1 and 1.0.
IPC 1-7
IPC 8 full level
F04D 1/08 (2006.01); F04D 29/18 (2006.01); F04D 29/22 (2006.01); F04D 29/32 (2006.01); F04D 31/00 (2006.01)
CPC (source: EP US)
F04D 29/181 (2013.01 - EP US); F04D 29/2288 (2013.01 - US); F04D 29/324 (2013.01 - EP US); F04D 29/682 (2013.01 - EP); F04D 29/684 (2013.01 - EP); F04D 31/00 (2013.01 - EP US); F04D 29/2288 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0781929 A1 19970702; EP 0781929 B1 20030319; BR 9606214 A 19980825; CN 1392346 A 20030122; DE 69626768 D1 20030424; DE 69626768 T2 20030814; FR 2743113 A1 19970704; FR 2743113 B1 19980123; JP H09195985 A 19970729; NO 312257 B1 20020415; NO 965610 D0 19961227; NO 965610 L 19970630; US 5885058 A 19990323; US 6149385 A 20001121
DOCDB simple family (application)
EP 96402879 A 19961224; BR 9606214 A 19961230; CN 01133941 A 20010814; DE 69626768 T 19961224; FR 9515624 A 19951228; JP 3497 A 19970106; NO 965610 A 19961227; US 22114498 A 19981228; US 77706596 A 19961230