Systems for managing abrasive media in cavitated fluid

Patent metadata

Field	Value
Publication number	US-11633835-B2
Application number	US-201816221019-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Dec 14, 2018
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

Systems for managing abrasive media in cavitated fluid include a set of sensors in communication with cavitated fluid in a processing tank and a processor coupled to the set of sensors. The processor is configured to determine a density of an abrasive media in the cavitated fluid in the processing tank and facilitate maintaining the density of abrasive media in the cavitated fluid in the processing tank at a level that is greater than or equal to a threshold level of abrasive media. The processor is further configured to command the abrasive media addition device to add the recycled abrasive media to the processing tank to increase the density of abrasive media in the cavitated fluid in response to determining that an average density of abrasive media is less than the threshold density of abrasive media.

First claim

What is claimed is:

1. A system for managing abrasive media in a cavitated fluid within a processing tank for use in performing a cavitation peening technique on a workpiece in the processing tank, the system comprising:
a set of sensors in communication with the cavitated fluid in the processing tank;
a processor coupled to the set of sensors, the processor configured to:
determine a density of an abrasive media in the cavitated fluid in the processing tank in response to input from the set of sensors, and
facilitate maintaining the density of abrasive media in the cavitated fluid in the processing tank at a level that is greater than or equal to a threshold level of abrasive media; and

an abrasive media addition device in communication with the processor and in fluid communication with the processing tank, the abrasive media addition device configured to add recycled abrasive media to the cavitated fluid in the processing tank,
wherein:
in determining the density of abrasive media, the processor is configured to calculate an average density of abrasive media in the cavitated fluid; and
the processor is further configured to command the abrasive media addition device to add the recycled abrasive media to the processing tank to increase the density of abrasive media in the cavitated fluid in response to determining that the average density of abrasive media is less than the threshold density of abrasive media.

2. The system according to claim 1 , further comprising:
a recirculation tank;
a conduit fluidically coupling the processing tank and the recirculation tank so that excess cavitation fluid in the processing tank flows into the recirculation tank as overflow cavitation fluid, wherein the abrasive media addition device fluidically couples the processing tank and the recirculation tank so that abrasive media from a first layer of abrasive media on a bottom of the recirculation tank is added to the cavitation fluid in the processing tank;
a cavitation nozzle in the processing tank and fluidically coupled to the overflow cavitation fluid in the recirculation tank so that filtered water from the overflow cavitation fluid in the recirculation tank is injected into the processing tank as a cavitating jet of water; and
an abrasive media distribution device in the processing tank and configured to distribute abrasive media from a second layer of abrasive media on a bottom of the processing tank into the cavitation fluid in the processing tank.

3. The system of claim 2 , further comprising a first pump in the recirculation tank, wherein the first pump is configured to pump the abrasive media from the first layer of abrasive media on the bottom of the recirculation tank to the abrasive media addition device.

4. The system of claim 3 , further comprising a second pump in the processing tank, the second pump is configured to pump the abrasive media from the second layer of abrasive media on the bottom of the processing tank to the cavitation fluid in the processing tank.

5. The system of claim 3 , wherein the abrasive media addition device is non-movably fixed relative to the processing tank.

6. The system of claim 3 , wherein the abrasive media distribution device is movable relative to the processing tank so that the abrasive media from a second layer of abrasive media on a bottom of the processing tank can be distributed to multiple locations within the processing tank.

7. The system of claim 3 , wherein:
the abrasive media distribution device is movable relative to the processing tank so that the abrasive media from a second layer of abrasive media on a bottom of the processing tank can be distributed to multiple locations within the processing tank; and the first pump is movable relative to the recirculation tank.

8. The system according to claim 1 , further comprising a recirculation system coupled to the processing tank, the recirculating system configured to:
receive overflow cavitation fluid from the processing tank; and
supply abrasive media in the overflow cavitation fluid back to the processing tank for re-use in the cavitated fluid.

9. The system according to claim 8 , further comprising an input device configured to remove material from a surface of the workpiece, wherein:
the input device is coupled to the recirculation system, and
the recirculation system is configured to supply water to the input device.

10. The system according to claim 8 , further comprising:
an input device configured to remove material from a surface of the workpiece; and
a water source coupled to the input device.

11. The system according to claim 1 , wherein the processor, to facilitate maintaining the density of abrasive media in the cavitated fluid in the processing tank, is configured to:
facilitate adding abrasive media to the cavitated fluid in response to detecting that a current level of abrasive media in the cavitated fluid is less than the threshold level of abrasive media; and
maintain the current level of abrasive media in the cavitated fluid in response to detecting that the current level of abrasive media in the cavitated fluid is greater than or equal to the threshold level of abrasive media.

12. The system according to claim 1 , further comprising an abrasive media distribution device within the processing tank, the abrasive media distribution device configured to spread settled abrasive media in the processing tank to the cavitated fluid to increase a uniformity of abrasive media throughout the processing tank.

13. The system according to claim 1 , wherein the set of sensors is further configured to facilitate maintaining a uniform density of abrasive media in the cavitated fluid throughout the processing tank.

14. A system for managing abrasive media in a cavitated fluid within a processing tank for use in performing a cavitation peening technique on a workpiece in the processing tank, the system comprising:
a set of sensors in communication with the cavitated fluid in the processing tank;
a processor coupled to the set of sensors, the processor configured to:
determine a density of an abrasive media in the cavitated fluid in the processing tank in response to input from the set of sensors, and
facilitate maintaining the density of abrasive media in the cavitated fluid in the processing tank at a level that is greater than or equal to a threshold level of abrasive media

wherein:
the set of sensors comprises a plurality of sensors;
each sensor is in communication with the cavitated fluid at a different location in the processing tank;
each sensor is configured to determine a density of abrasive media in the cavitated fluid at a respective location in the processing tank;
the system further comprises an abrasive media distribution device within the processing tank;
the abrasive media distribution device is in communication with the processor;
the processor is configured to determine a location in the processing tank that includes a density of abrasive media that is less than another location in the processing tank; and
the abrasive media distribution device is configured to spread the abrasive media at the location to increase a density of abrasive media in the cavitated fluid at the location.

15. The system according to claim 14 , further comprising a recirculation system coupled to the processing tank, the recirculating system configured to:
receive overflow cavitation fluid from the processing tank; and
supply abrasive media in the overflow cavitation fluid back to the processing tank for re-use in the cavitated fluid.

16. The system according to

Assignees

• Boeing Co

Inventors

• Sanders Daniel G

Classifications

• B24B49/12

  involving optical means · CPC title

• B24C9/006

  Treatment of used abrasive material · CPC title

• G01N15/06

  Investigating concentration of particle suspensions (by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10) · CPC title

• G01N2015/0053

  in liquids, e.g. trouble · CPC title

• B24C1/10 Primary

  for compacting surfaces, e.g. shot-peening (for deforming sheet metal, tubes or profiles B21D31/06; as a metallurgical treatment C21D7/00, C22F1/00) · CPC title