Title:
PIPE WALL THICKNESS MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/188472
Kind Code:
A1
Abstract:
Provided is a pipe wall thickness measurement device with which it is possible to measure, with minimal burden to a measurer and in a short period of time, the amount of change in the wall thickness of a pipe. The pipe wall thickness measurement device comprises a reference center axis determination unit 10, a three-dimensional scanner 20, a measurement center axis determination unit 30, and a wall thickness change amount measurement unit 40. The reference center axis determination unit 10 determines, from longitudinal three-dimensional design data of an outside surface based on design specifications of a pipe in an initial state, the longitudinal center axis of the pipe in the initial state to be a reference center axis. The measurement center axis determination unit 30 extracts, from three-dimensional scan data obtained by the three-dimensional scanner 20, at least two sites having an outside diameter similar to that in the three-dimensional design data, and determines a line passing through each of the center points of the outside diameter of the extracted sites to be a measurement center axis. The wall thickness change amount measurement unit 40 matches the reference center axis and the measurement center axis, compares the outside surfaces in the three-dimensional scan data with the three-dimensional design data, and measures the amount of change in the wall thickness of the pipe subject to measurement.
Inventors:
MARUYAMA TERUYOSHI (JP)
Application Number:
PCT/JP2022/037598
Publication Date:
October 05, 2023
Filing Date:
October 07, 2022
Export Citation:
Assignee:
AIL CO LTD (JP)
International Classes:
F22B37/02; G01B21/08
Foreign References:
| JP2009204604A | 2009-09-10 | |||
| JP2011033375A | 2011-02-17 | |||
| JP2018077818A | 2018-05-17 |
Other References:
MATSUI Y., MORINAGA M.: "On-site Inspection of Boiler Tubes Using 3D Laser Scanners", THERMAL AND NUCLEAR POWER CONVENTION PAPER COLLECTION, vol. 72, no. 11, 1 November 2021 (2021-11-01), pages 883 - 888, XP093097306, DOI: 10.14942/tenpes.72.51
TAMURA MASAATSU: "Collation Technology between 3D-CAD Data and Point Cloud Data Measured by Non-Contact Digitizers", JOURNAL OF THE JAPAN SOCIETY FOR PRECISION ENGINEERING, vol. 83, no. 8, 1 January 2017 (2017-01-01), pages 732 - 736, XP093097309, DOI: 10.2493/jjspe.83.732
TAMURA MASAATSU: "Collation Technology between 3D-CAD Data and Point Cloud Data Measured by Non-Contact Digitizers", JOURNAL OF THE JAPAN SOCIETY FOR PRECISION ENGINEERING, vol. 83, no. 8, 1 January 2017 (2017-01-01), pages 732 - 736, XP093097309, DOI: 10.2493/jjspe.83.732
Attorney, Agent or Firm:
NAMAI, Kazuhira (JP)
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