Invention Grant
- Patent Title: Multi-sensor inspection for identification of pressurized pipe defects that leak
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Application No.: US14866354Application Date: 2015-09-25
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Publication No.: US09933329B2Publication Date: 2018-04-03
- Inventor: Charles A. Hansen , Mark Grabowski
- Applicant: Electro Scan, Inc.
- Applicant Address: US CA Sacramento
- Assignee: Electro Scan, Inc.
- Current Assignee: Electro Scan, Inc.
- Current Assignee Address: US CA Sacramento
- Agency: Heisler & Associate
- Main IPC: G01M3/00
- IPC: G01M3/00 ; G01M3/18 ; G01M3/24 ; G01M3/26 ; G01M3/28 ; G01M3/38 ; G01M3/40 ; G01M5/00

Abstract:
The system utilizes conductivity equipment as well as a camera, pressure sensor, and acoustic hydrophone within a probe deployed via cable into a pipe to be inspected. The probe completes an electric circuit back to ground when the probe is adjacent a defect through which electric currents can pass, thus producing varying electric current. The camera, incorporated into the electric probe, is utilized for both inspection and navigation through the pipe by providing a close-circuit video data feed. The pressure sensor detects alterations in the pressure and flow field of the fluidic region in the area of a leak. The acoustic hydrophone listens for the sound leaks in a pressurized pipeline. The inspection device is tethered to a cable and inserted a measured distance into the pipeline, typically with the pipeline under pressure, via a launch tube. Multi-sensor data versus pipeline position is thus obtained.
Public/Granted literature
- US20170045416A1 MULTI-SENSOR INSPECTION FOR IDENTIFICATION OF PRESSURIZED PIPE DEFECTS THAT LEAK Public/Granted day:2017-02-16
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