Method and apparatus for multi-round alignment of gas long-distance pipeline magnetic flux leakage internal inspection data

US12181442B1 · kind B1 · utility

Assignee

• Shenyang Inspection Technology Branch of Pipechina Group North Pipeline Co., Ltd. · CN

Inventors

• Mingwei Duan · Shenyang, CN
• Zidong Zhu · Shenyang, CN
• Zhijun Liu · Qingdao, CN
• Yipei Wang · Ann Arbor, US
• Shijia Xi · Shenyang, CN
• Zhenzhe Bi · Shenyang, CN
• Lei Zhang · Nanhu, CN
• Wennan Lin · Shenyang, CN
• Yuqing Gao · Mount Kisco, US
• Yi Luan · Shenyang, CN

Key dates

• Filing date: Sep 19, 2023
• Grant date: Dec 31, 2024
• Expiry date: Sep 19, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/83
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed are a method and an apparatus for multi-round alignment of gas long-distance pipeline magnetic flux leakage internal inspection data. The method includes: identifying the primary feature point data of two sets of internal inspection data, dividing the pipeline into multiple primary pipeline sections, identifying the secondary feature points in the primary pipeline sections, aligning the secondary feature points using a segment splitting algorithm, re-aligning unaligned secondary feature points, and aligning remaining feature points and defects in the secondary pipeline sections.