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Centrifugal pump intake pipe with a helical flow path

Inactive Publication Date: 2016-09-29
SYNCRUDE CANADA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a pump assembly for a slurry that includes a volute and an intake pipe. The intake pipe is designed to reduce wear and impacts between the pump components and the larger solid particles in the slurry. This is achieved by imparting a circumferential velocity to the solid particles, reducing the axial velocity of the solid particles, and reducing the amount of impacts between the solid particles and the pump components. The use of a computational fluid dynamics model validated the effectiveness of the intake pipe in reducing wear and impacts.

Problems solved by technology

These lumps impact the impeller vanes of the centrifugal pumps with high relative velocity and thereby wear or damage the impeller vanes.
The repair or replacement of the impeller vanes and the associated loss of productivity is a significant expense.

Method used

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  • Centrifugal pump intake pipe with a helical flow path
  • Centrifugal pump intake pipe with a helical flow path
  • Centrifugal pump intake pipe with a helical flow path

Examples

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Embodiment Construction

[0027]The detailed description set forth below in connection with the appended drawings is intended as a description of various embodiments of the present invention and is not intended to represent the only embodiments contemplated by the inventor. The detailed description includes specific details for the purpose of providing a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

[0028]The present invention relates generally to an intake pipe for a centrifugal pump. When describing the present invention, all terms not defined herein have their common art-recognized meanings. To the extent that the following description is of a specific embodiment or a particular use of the invention, it is intended to be illustrative only, and not limiting of the claimed invention. The following description is intended to cover all alternatives, modifications and equi...

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Abstract

An intake pipe for directing a slurry towards an impeller of a centrifugal pump defines a helical flow path oriented to swirl the slurry in a rotational direction of the impeller.

Description

FIELD OF THE INVENTION[0001]The present invention relates to pumping of slurries, and more particularly to intake pipes for centrifugal pumps used to pump slurries.BACKGROUND OF THE INVENTION[0002]Oil sands ores mined in Alberta, Canada are crushed and mixed with heated water, steam and caustic (NaOH) to produce slurries to be processed to recover bitumen. Centrifugal pumps are used to hydrotransport these oil sand slurries through pipe lines. Centrifugal pumps are also used to transport oil sands tailings through pipe lines.[0003]Unlike single phase liquids, these slurries may contain hard, solid lumps that measure up to several inches in diameter. These lumps impact the impeller vanes of the centrifugal pumps with high relative velocity and thereby wear or damage the impeller vanes. The repair or replacement of the impeller vanes and the associated loss of productivity is a significant expense.[0004]Accordingly, there is a need in the art for devices that may be used to mitigate w...

Claims

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Application Information

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IPC IPC(8): F04D29/42F04D29/22F04D13/12F04D1/00F04D7/04
CPCF04D29/4233F04D1/00F04D29/22F04D13/12F04D7/04F04D29/4293F05D2250/25F05D2250/51
Inventor REID KEVINHARASYM STEPHEN
Owner SYNCRUDE CANADA LTD