Device for resuspension of solids in slurry pipe transport

Patent metadata

Field	Value
Publication number	US-11230445-B2
Application number	US-201916977713-A
Country	US
Kind code	B2
Filing date	Mar 1, 2019
Priority date	Mar 2, 2018
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

An internal inclined sub-channel, or ramp device, for suspending and/or re-suspending solids within a pipeline system during transport of slurry may be provided to various components of the slurry transport system to control or reduce localized and severe wear that often occurs in slurry pumps. Embodiments of the ramp device may be adequately configured to alter slurry multiphase flow patterns and/or disrupt traditional moving/sliding bed regime phenomena. Embodiments of the ramp device may be adequately configured to raise coarse abrasive particulates from bottom portions of a slurry pipe section—where a higher concentration and/or a larger presence of coarser particles may be present. Embodiments of the ramp device may be installed in proximity of and/or upstream of slurry pumps to prevent occurrences of severe localized wear at the inner diameter of the pump suction side wall around the bottom or 6 o'clock position.

First claim

The invention claimed is:

1. A component of a slurry transport system operable for directing slurry flow in an upward direction away from a lower interior surface of said component, comprising:
an exterior frame;
an interior liner disposed within an interior of said exterior frame, said interior liner operable for accommodating travel of a slurry flow therethrough; and
a ramp device disposed upon a lower surface of said interior liner, said ramp device operable for directing slurry flow within said interior liner in an upward direction away from said lower surface of said interior liner, for re-suspending coarse solid particulates away from a lower portion of said slurry flow, thereby reducing wear associated with said coarse particulates upon slurry pumps located downstream from said component, wherein said ramp device is affixed to said lower surface of said interior liner by suitable fastening means.

2. The component according to claim 1 , wherein said ramp device is operable for directing slurry flow within said interior liner in an upward and inward direction away from said lower surface of said interior liner.

3. The component according to claim 1 , wherein said interior liner is constructed of a material selected from the group consisting of metal, metal alloy, chrome white iron, steel, ceramics, rubber, polyurethane, plastic, elastomeric and polymeric materials.

4. The component according to claim 1 , wherein said ramp device is constructed of a material selected from the group consisting of metal, metal alloy, chrome white iron, steel, ceramics, rubber, polyurethane, steel, plastic, elastomeric and polymeric materials.

5. The component according to claim 1 , wherein said ramp device comprises an upwardly inclined section operable for directing slurry flow in an upward direction away from said lower surface of said interior liner.

6. The component according to claim 1 , wherein said ramp device comprises an upwardly inclined and concave section operable for directing slurry flow in an upward direction away from said lower surface of said interior liner.

7. The component according to claim 1 , wherein said ramp device comprises:
a base having a general curvature substantially matching a curvature of a portion of said interior liner upon which it is disposed; and
an upwardly inclined section operable for directing slurry flow in an upward direction away from said lower surface of said interior liner.

8. The component according to claim 1 , wherein said ramp device comprises:
a base having a general curvature substantially matching a curvature of a portion of said interior liner upon which it is disposed; and
an upwardly inclined and concave section operable for directing slurry flow in an upward direction away from said lower surface of said interior liner.

9. A component of a slurry transport system operable for directing slurry flow in an upward direction away from a lower interior surface of said component, comprising:
an exterior frame;
an interior liner disposed within an interior of said exterior frame, said interior liner operable for accommodating travel of a slurry flow therethrough; and
a ramp device disposed upon a lower surface of said interior liner, said ramp device operable for directing slurry flow within said interior liner in an upward direction away from said lower surface of said interior liner, for re-suspending coarse solid particulates away from a lower portion of said slurry flow, thereby reducing wear associated with said coarse particulates upon slurry pumps located downstream from said component, wherein said ramp device comprises:
a base having a general curvature substantially matching a curvature of a portion of said interior liner upon which it is disposed;
an upwardly inclined section operable for directing slurry flow in an upward direction away from said lower surface of said interior liner; and
a pair of substantially vertical guide sections disposed on opposite sides of said upwardly inclined section for further directing slurry flow in an upward direction away from said lower surface of said interior liner.

10. The component according to claim 9 , wherein said ramp device comprises
an upwardly inclined and concave section operable for directing slurry flow in an upward direction away from said lower surface of said interior liner.

11. A ramp device disposed within a lower interior portion of a slurry transport system for directing slurry flow in an upward direction away from a lower interior surface of said slurry transport system, comprising an upwardly inclined section operable for directing slurry flow in an upward direction away from said lower interior surface of said slurry transport system, wherein said ramp device is affixed by suitable fasteners upon a lower interior surface of said slurry transport system.

12. A ramp device according to claim 11 , wherein said ramp device is operable for re-suspending coarse solid particulates away from a lower portion of said slurry flow, thereby reducing wear associated with said coarse solid particulates upon slurry pumps located downstream from said ramp device.

13. A ramp device according to claim 11 , wherein said ramp device further comprises a base having a general curvature substantially matching a curvature of a lower interior portion of said slurry transport system upon which it is disposed.

14. A ramp device according to claim 11 , wherein said ramp device further comprises a pair of substantially vertical guide sections disposed on opposite sides of said upwardly inclined section for further directing slurry flow in an upward direction within said slurry transport system.

15. A method for reducing lower interior surface wear in a slurry transport system comprising:
providing one or more ramp devices operable for directing slurry flow in an upward direction away from a lower interior surface of said slurry transport system; each of the one or more ramp devices comprising a pair of substantially vertical guide sections disposed on opposite sides of an upwardly inclined section;
disposing said one or more ramp devices upon one or more locations along said lower interior surface of said slurry transport system; and
transporting slurry through the slurry transport system across said one or more ramp devices.

16. The component according to claim 1 , wherein said ramp device is tapered in its width for directing slurry flow upwardly and inwardly.

17. The component according to claim 9 , wherein said ramp device is tapered in its width for directing slurry flow upwardly and inwardly.

18. The method according to claim 15 , wherein said one or more ramp devices are tapered in its width for directing slurry flow upwardly and inwardly.

Assignees

• Smidth As F L

Inventors

• Echeverri Luis Fernando

Classifications

• B65G53/521 Primary

  means for preventing the accumulation or for removal of deposits (preventing accumulation in pipes in general F16L55/24) · CPC title

• F16L57/06 Primary

  against wear (F16L57/04 takes precedence) · CPC title

• F16L55/24

  Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers · CPC title

• B65G53/523

  Wear protection · CPC title

• F15D1/02

  in pipes or conduits · CPC title