Cascaded axial fluid separator methods and systems

Patent metadata

Field	Value
Publication number	US-9833795-B2
Application number	US-201615162275-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	Jun 21, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A method and system for separating multicomponent fluids into components having different buoyancies. A flow shaping member has a helical channel that imparts a helical motion to the fluid, and a separation chamber for separating the moving fluid into a helically moving heavier flow portion and a more buoyant portion along the central axis. A flow receiving member has a first collection horn with a mouth arranged to collect the higher buoyancy fluid and direct the fluid to an outlet. At least one other fluid passageway for carrying lower buoyancy fluid has an inlet surrounding of the collection horn, and directs the fluid to a separate outlet at an end of the separator. Additional collection horns can be arranged concentrically around the first collection horn to collect intermediate buoyancy flows. Cascaded fluid separators can concentrate the higher buoyancy fluid or the denser fluid.

First claim

What is claimed as new and desired to be protected by Letters Patent of the United States is:

1. A cascaded flow separation system having at least a first flow separator and a second flow separator arranged in series,
each separator having a central axis with both a fluid inlet and a first axial fluid outlet arranged at opposite ends of the separator along the central axis of the separator, each separator having at least a second fluid outlet, the separator configured to separate fluid portions of different buoyancies into flow paths out of the first fluid outlet and the second fluid outlet, and each separator having a housing with an approximately constant inner diameter,
the separators being operatively coupled together, with the first axial fluid outlet of the first separator coupled to the fluid inlet of the second separator,
each separator having a flow forming member with a helical channel on an outer surface thereof, a flow receiving member with concentric collectors configured to receive flow portions of different buoyancies, and a separation chamber arranged between the flow forming member and the flow receiving member, the separation chamber also having the approximately constant inner diameter of the separator housing, the concentric collectors comprising a horn shaped collector with an axial passageway that is aligned along the central axis, and each separator operating by using inlet fluid pressure to passively drive the fluid portions through the helical channel, wherein the first axial fluid outlet of the first separator is directly connected to the fluid inlet of the second separator, without a pump between the separators.

2. The separation system of claim 1 , further having a third flow separator that operates by using the inlet fluid pressure to drive the fluid portions through the helical channel, wherein the second fluid outlet of the first separator is off-axial and connected to the fluid inlet of the third separator.

3. The separation system of claim 1 , wherein the first separator has a flow outlet diameter equal to a flow inlet diameter of the second separator.

4. The separation system of claim 1 , wherein each of the first flow separator and the second flow separator is formed separately and subsequently assembled.

5. The separation system of claim 1 , wherein the first flow separator and the second flow separator are formed as an integral unit.

6. The separation system of claim 1 , wherein at least one of the first flow separator and the second flow separator are formed by at least one of bonding separately formed pieces together, casting, forging, machining, or an additive manufacturing process.

7. The separation system of claim 6 , wherein the additive manufacturing process is a three-dimensional printing process.

8. A method for separating a fluid into at least two portions of differing buoyancy using a cascaded flow separation system having at least a first flow separator and a second flow separator arranged in series,
each separator having a fluid inlet and a first axial fluid outlet arranged at opposite ends of the separator along a central axis of the separator, each separator having at least a second fluid outlet, each separator configured to separate fluid portions of different buoyancies into flow paths out of the first fluid outlet and the second fluid outlet, and each separator having a housing with an approximately constant inner diameter, the separators being operatively coupled together with the first axial fluid outlet of the first separator coupled directly to the fluid inlet of the second separator,
each separator having a flow forming member with a helical channel on an outer surface thereof, a flow receiving member with concentric collectors configured to receive flow portions of different buoyancies, and a separation chamber arranged between the flow forming member and the flow receiving member, the separation chamber also having the approximately constant inner diameter of the separator housing, the concentric collectors comprising a horn shaped collector with an axial passageway that is aligned along the central axis,
the method comprising:
introducing a pressurized fluid into the inlet of the first separator at a pressure such that the first separator separates the fluid into at least two channels carrying fluid portions of differing buoyancy, and the second separator separates fluid that enters the inlet of the second separator from the first separator into at least two channels carrying fluids of differing buoyancy, wherein each separator operates by using the pressure to passively drive the fluid portions through the helical channel, and wherein the first axial fluid outlet of the first separator is directly connected to the fluid inlet of the second separator, without a pump between the separators.

9. The method of claim 8 , the cascaded flow separation system further having a third flow separator that operates by using the inlet fluid pressure to drive the fluid portions through the helical channel, wherein the second fluid outlet of the first separator is off-axial and connected to the fluid inlet of the third separator, and wherein the third separator separates fluid that enters the inlet of the third separator from the first separator into at least two channels carrying fluids of differing buoyancy.

10. The method of claim 8 , wherein the first separator has a flow outlet diameter equal to a flow inlet diameter of second separator.

11. The method of claim 8 , wherein each of the first flow separator and the second flow separator is formed separately and subsequently assembled.

12. The method of claim 8 , wherein the first flow separator and the second flow separator are formed as an integral unit.

13. The method of claim 8 , wherein at least one of the first flow separator and the second flow separator are formed by at least one of bonding separately formed pieces together, casting, forging, machining, or an additive manufacturing process.

14. The method of claim 13 , wherein the additive manufacturing process is a three-dimensional printing process.

15. A cascaded flow separation system having at least a first flow separator and a second flow separator arranged in series,
each separator having a fluid inlet along a central axis and a first fluid outlet that is off-axial, each separator having at least a second fluid outlet, the separator configured to separate fluid portions of different buoyancies into flow paths out of the first fluid outlet and the second fluid outlet, and each separator having a housing with an approximately constant inner diameter,
the separators being operatively coupled together, with the first fluid outlet of the first separator coupled to the fluid inlet of the second separator,
each separator having a flow forming member with a helical channel on an outer surface thereof, a flow receiving member with concentric collectors configured to receive flow portions of different buoyancies, and a separation chamber arranged between the flow forming member and the flow receiving member, the separation chamber also having the approximately constant inner diameter of the separator housing, the concentric collectors comprising a horn shaped collector with an axial passageway that is aligned along the central axis.

16. The separation system of claim 15 , further having a third flow separator that operates by using the inlet fluid pressure to passively drive the fluid portions through the helical channel, wherein the second fluid outlet of the first separator is along the central axis of the separator and directly connected to the flui

Assignees

• Us Navy

Inventors

• Tucker John E
• Howard Paul L
• Reintjes John F

Classifications

• B01D17/0217

  by centrifugal force · CPC title

• B01D21/265

  by using a vortex inducer or vortex guide, e.g. coil (B01D21/0054 takes precedence) · CPC title

• B01D19/0094

  by using a vortex, cavitation · CPC title

• B04C5/14 Primary

  Construction of the underflow ducting; Apex constructions; Discharge arrangements {; discharge through sidewall provided with a few slits or perforations (provided with a great number of slits or perforations B04C5/10)} · CPC title

• B01D17/0208

  by sedimentation · CPC title