公开(公告)号：US20230304873A1

公开(公告)日：2023-09-28

申请号：US18321592

申请日：2023-05-22

Applicant: PICA Pipeline Inspection and Condition Analysis Corporation

Inventor： David E. Russell ,  Yuwu Yu ,  Ad Shatat ,  Martin Korz

IPC: G01L1/12 ,  G01B7/06

CPC classification number: G01L1/127 ,  G01B7/10

Abstract: A system for detecting and quantifying changes in the stress-strain state of a ferrous structure includes an exciter coil system positioned to generate an AC magnetic field that couples into the ferrous structure. A detector apparatus is positioned relative to the exciter to detect an eddy current magnetic field resulting from the AC magnetic field generated by the exciter coil system. An analyzer compares the eddy current magnetic field parameters detected by the detector apparatus with the direct AC magnetic field transmitted by the exciter coil system and correlates changes in the parameters of the eddy current magnetic field with the stress-strain on the ferrous structure.

公开(公告)号：US11549912B2

公开(公告)日：2023-01-10

申请号：US17202139

申请日：2021-03-15

Applicant: PICA Pipeline Inspection and Condition Analysis Corporation

Inventor： David E. Russell ,  David Burton

IPC: G01N27/9013 ,  G01N27/90 ,  F16L55/44 ,  F16L101/30

Abstract: An in-line inspection (ILI) tool 20 for use inspecting pipelines includes a plurality of collapsible guide centralizers 100 configured and sized to correspond to the inside diameter of the pipeline being inspected. The guide centralizes 100 include wheels 102 roll along the inside wall of the pipeline being inspected to maintain the guide centralizers “centered” within the pipeline. A collapsible exciter unit centralizer 200 is positioned between collapsible guide centralizers 100 to “center” the exciter unit centralizer relative to the interior of the pipeline. The exciter unit centralizer 200 generates signals in the form of an alternating magnetic field that travel along the wall of the pipeline which in turn generates eddy current signals. The eddy current signals undergo a change if a discontinuity in the pipeline is encountered by the inspection tool 20, which signal change or deviation is detected by a collapsible detector unit centralizer 300 positioned between the collapsible guide centralizers 100.

公开(公告)号：US20220074893A1

公开(公告)日：2022-03-10

申请号：US17447277

申请日：2021-09-09

Applicant: PICA: Pipeline Inspection and Condition Analysis Corporation

Inventor： David E. Russell ,  Yuwu Yu ,  Ad Shatat ,  Martin Korz

IPC: G01N27/90 ,  G01N33/204

Abstract: A system for detecting and quantifying changes in the stress-strain state of a ferrous structure includes an exciter coil system is positioned to generate an AC magnetic field that couples into the ferrous structure. A detector apparatus is positioned relative to the excited to detect an eddy current magnetic field resulting from the AC magnetic field generated by the exciter coil system. An analyzer compares the eddy current magnetic field parameters detected by the detector apparatus with the direct AC magnetic field transmitted by the exciter coil system and correlates changes in the parameters of the eddy current magnetic field with the stress-strain on the ferrous structure.

公开(公告)号：US20220291170A1

公开(公告)日：2022-09-15

申请号：US17202139

申请日：2021-03-15

Applicant: PICA: Pipeline Inspection and Condition Analysis Corporation

Inventor： David E. Russell ,  David Burton

IPC: G01N27/9013 ,  F16L55/44 ,  G01N27/90

Abstract: An in-line inspection (ILI) tool 20 for use inspecting pipelines includes a plurality of collapsible guide centralizers 100 configured and sized to correspond to the inside diameter of the pipeline being inspected. The guide centralizes 100 include wheels 102 roll along the inside wall of the pipeline being inspected to maintain the guide centralizers “centered” within the pipeline. A collapsible exciter unit centralizer 200 is positioned between collapsible guide centralizers 100 to “center” the exciter unit centralizer relative to the interior of the pipeline. The exciter unit centralizer 200 generates signals in the form of an alternating magnetic field that travel along the wall of the pipeline which in turn generates eddy current signals. The eddy current signals undergo a change if a discontinuity in the pipeline is encountered by the inspection tool 20, which signal change or deviation is detected by a collapsible detector unit centralizer 300 positioned between the collapsible guide centralizers 100.