SYSTEMS, DEVICES, AND METHODS FOR IN SITU PIPE REPAIR
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United States of America Patent
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Issued Date -
Jun 8, 2023
app pub date -
Nov 21, 2022
filing date -
Nov 22, 2021
priority date (Note) -
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Abstract
A system for in situ repair of a metal pipe has a pipe repair head, an actuation assembly, an electrical power supply, and a controller. The pipe repair head can have an arm extending along a radiation direction of the pipe and a Joule heating element coupled to a distal end portion of the arm. The actuation assembly can move the pipe repair head along the axial and/or circumferential directions of the metal pipe. The controller controls the actuation assembly to position the pipe repair head with respect to a surface portion of the inner circumferential wall. The controller can then control the electrical power supply to apply a current pulse to the Joule heating element so as to generate a temperature of at least 1000° C. proximal to the surface portion, thereby sintering a metal powder in a slurry on the surface portion to form a metal repair layer.
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