Two-phase helical mixed flow impeller with curved fairing
AssigneeInstitut Francais du Petrole
InventorYves Charron
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Abstract
A compression or expansion two-phase helical mixed flow impeller (1) comprising one or more vanes (3) mounted on a boss, a cover (4) or fairing mounted on the outer part of the vanes, the assembly being arranged in a housing (2). The cover (4) has at least one of its ends corresponding to the inlet and/or the outlet of the impeller, a slop whose value is determined so as to limit leaks between the inlet and the outlet of the impeller.
Claims9
A compression or expansion two-phase helical mixed flow impeller comprising one or more vanes (25) mounted on a boss (26), a cover (24) mounted on the outer part of the vanes, the assembly being placed in a housing (20), characterized in that the cover has, at least at one of the ends thereof corresponding to an inlet and/or to an oulet of the impeller, a slope whose value is determined so as to limit between the impeller inlet and outlet.
Dependencies are inferred from the claim text.