A burst mode buried pipeline current mapping excitation system

CN122171864APending Publication Date: 2026-06-09CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing pipeline current mapping systems suffer from poor transmitter excitation source stability, low output current accuracy, high cost, and limited power when detecting pipelines at great depths, making it impossible to apply sufficient excitation current to pipelines deeper than 5m.

Method used

A burst-type buried pipeline current mapping excitation system was designed, which adopts a DC-DC boost module, an energy storage capacitor, a relay switching module and a signal acquisition and conditioning module. By alternating excitation with forward and reverse excitation currents, the excitation effect is improved and sufficient excitation magnetization is provided for pipelines with large burial depths.

Benefits of technology

It achieves full excitation of pipelines buried at depths of over 5 meters, with a maximum instantaneous power exceeding 200W and an instantaneous current exceeding 20A, improving the accuracy and efficiency of detection, and possessing data acquisition and display functions.

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Abstract

The present application belongs to the technical field of pipeline current mapping, and particularly relates to a burst buried pipeline current mapping excitation system. The excitation system designs a new pipeline current mapping excitation circuit, realizes the alternate excitation of forward / reverse excitation current of the buried pipeline, and provides necessary technical support for fully exciting the magnetization of the large buried depth pipeline. The burst buried pipeline current mapping excitation system comprises a DCDC boost module, a first energy storage capacitor, a second energy storage capacitor, a relay switching module and a signal acquisition and conditioning module. The DCDC boost module is used for providing charging electric energy; the first energy storage capacitor and the second energy storage capacitor are respectively used for providing forward / reverse excitation; the relay switching module is used for switching the excitation mode of the first energy storage capacitor and the second energy storage capacitor; and the signal acquisition and conditioning module is used for collecting and monitoring the voltage analog data of the first energy storage capacitor and the second energy storage capacitor and the current analog data of the excitation current in the excitation process.
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