Turbomachine and impeller

US20120093636A1Inactive Publication Date: 2012-04-19AKER SUBSEA AS
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
AKER SUBSEA AS
Publication Date
2012-04-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

Turbomachine for increasing the pressure of a fluid or mixture of fluids, comprising an inlet and an outlet, a casing, a rotatable shaft arranged in the casing, diffusers or similar operatively arranged in the turbomachine, and a means for rotation operatively connected to the shaft. The turbomachine is distinguished in that it comprises: at least one impeller of a mixed flow type arranged on the shaft, the impeller having an inlet and an outlet, the inlet is closer to an axis of rotation than the outlet; and at least one further impeller arranged on a common or operatively connected shaft, chosen from the group consisting of axial impellers arranged upstream of the mixed flow type impeller and radial impellers arranged downstream of the mixed flow type impeller. Impeller for use in a turbomachine for increasing the pressure of a fluid or mixture of fluids, the impeller comprising at least one blade, distinguished in that it comprises at least one fluid passageway fluidly connecting the pressure side of the blade with the leeward side of the blade.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to equipment for increasing the pressure of a fluid or a mixture of fluids, such as a mixture of oil, water and gas. More specifically, the invention relates to a turbomachine for increasing the pressure of a fluid or mixture of fluids and an impeller for use in a turbomachine.BACKGROUND OF THE INVENTION AND PRIOR ART

[0002] A turbomachine is a machine that transfers energy between a rotor and a fluid, the energy is added as kinetic energy to the fluid or retrieved as kinetic energy from the fluid. Turbomachinery is a large group of machinery of which flow-machines is one type. For flowmachines having rotors, such as centrifugal pumps and compressors, the added kinetic energy is associated with an increased static pressure as the kinetic energy of the fluid is converted in means used for such purpose, such as a diffuser, a volute section or similar means. The rotors of flowmachines are usually the blades of one or more impeller...

Claims

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