Method and System For Inspecting A Pipe

• US 20170176343A1
• Filed: 10/28/2016
• Published: 06/22/2017
• Est. Priority Date: 12/17/2015
• Status: Abandoned Application

• Current Assignee: Venkat R. Krishnan
• Original Assignee: Venkat R. Krishnan
• Inventors: KRISHNAN, Venkat R.
• Application Number:
  US15/337,722
• Publication Number:
  US 20170176343A1
• Time in Patent Office: Days
• CPC Class Codes: G01J 2005/0077 Imaging
• CPC Class Codes: G01J 5/0003 for sensing the radiant heat transfer of samples, e.g. emittance meter
• CPC Class Codes: G01N 2021/9544 with emitter and receiver on the probe
• CPC Class Codes: G01N 21/952 Inspecting the exterior surface of cylindrical bodies or wires G01N21/956 takes precedence
• CPC Class Codes: G01N 21/954 Inspecting the inner surface of hollow bodies, e.g. bores
• CPC Class Codes: G01N 25/72 Investigating presence of flaws
• CPC Class Codes: H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 23/555 for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes

Abstract

Methods and systems for identifying defects in pipes are provided. An example method for inspecting one or more metal structures in a pipe includes heating the pipe and placing an infrared (IR) sensor proximate to a surface of the pipe to obtain IR images of the pipe. Any defects are identified in at least one of the one or more metal structures in the IR images.

Claims

1. A method for inspecting one or more metal structures in a pipe, comprising:

heating the pipe;

placing an infrared (IR) sensor proximate to a surface of the pipe to obtain IR images of the pipe; and

identifying any defects in at least one of the one or more metal structures in the IR images.

2. The method of claim 1, further comprising passing the IR sensor along an axial length of an exterior surface of the pipe.

3. The method of claim 1, further comprising passing the IR sensor along an axial length through an interior space of the pipe.

4. The method of claim 1, wherein heating of the pipe includes passing a hot fluid through the pipe.

5. The method of claim 1, wherein the heating of the pipe includes passing a current through at least one of the one or more metal structures.

6. The method of claim 1, further comprising adjusting a focus of the IR sensor to obtain IR images of a plurality of metal structures in the pipe.

7. The method of claim 1, wherein identifying defects includes identifying areas having a different intensity in the IR images.

8. The method of claim 1, further comprising passing the IR sensor around a circumference of the pipe at an axial location along the length of the pipe.

9. The method of claim 1, wherein the one or more metal structures are selected from a pressure armor wire layer, a tensile armor wire layer, and combinations thereof.

10. A system for inspecting one or more metal structures in a pipe, comprising:

an infrared (IR) sensor operable to obtain IR images at an infrared wavelength;

an inspection device to which the IR sensor is mounted, wherein the inspection device is operable to control a position of the IR sensor proximate to a surface of the pipe; and

a data connection operable to transfer images from the IR sensor to an analysis system, wherein the analysis system is operable to identify defects in at least one of the one or more metal structures in the IR images.

11. The system of claim 10, comprising a seal to keep water from coming in between the IR sensor and the surface of the pipe during external inspection.

12. The system of claim 10, wherein the IR sensor comprises an IR camera.

13. The system of claim 10, wherein the IR sensor sends an IR video stream to the analysis system via the data connection.

14. The system of claim 10, wherein the inspection device comprises a tether to provide a coupling for power, the data connection, or both.

15. The system of claim 10, wherein the inspection device comprises a radio transceiver to provide the data connection and communicate with the analysis system.

16. The system of claim 10, wherein the inspection device comprises an eddy current heater to heat at least one of the one or more metal structures.

17. The system of claim 10, wherein the inspection device is operable to move through an interior space in the pipe.

18. The system of claim 17, wherein the inspection device comprises a propulsion system to move the inspection device through the interior space.

19. The system of claim 10, wherein the inspection device comprises a propulsion system to move over an exterior surface.

20. The system of claim 10, wherein the inspection device comprises an additional nondestructive inspection sensor.

21. A method for inspecting a flexible pipe, comprising:

heating the flexible pipe;

placing an infrared (IR) camera proximate to a surface of the flexible pipe to obtain IR images; and

identifying any defects in the flexible pipe in the IR images.