Pipeline welding parameter optimization method and system for natural gas transmission system construction

By optimizing welding parameters through multi-source sensor data acquisition and integrated learning algorithms, the problem of welding quality fluctuation in existing technologies has been solved, enabling real-time monitoring and suppression of hydrogen-induced cracking risk, thereby improving the safe service life of pipelines and system reliability.

CN121389750BActive Publication Date: 2026-05-29BEIJING BODA SHUNYUAN NATURAL GAS CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-21
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies lack real-time sensing and feedback in pipeline welding parameter control, making them unable to adapt to the hydrogen-induced cracking sensitivity of shallow hydrogen natural gas transportation. This results in large fluctuations in welding quality, making it difficult to achieve closed-loop control throughout the entire process, which affects the safe service life of pipelines and the reliability of the system.

Method used

The welding process is monitored in real time by employing a multi-source sensor data acquisition module, a dynamic modeling module for hydrogen diffusion behavior and residual stress, a process knowledge base and adaptive decision engine, and a closed-loop execution control module. Welding parameters are optimized through integrated learning algorithms to form a closed-loop control throughout the entire process.

Benefits of technology

It enables quantitative assessment and proactive suppression of hydrogen-induced cracking risk in welded joints, improves welding quality consistency and system robustness, and extends the safe service life of pipelines.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121389750B_ABST
    Figure CN121389750B_ABST
Patent Text Reader

Abstract

The present application belongs to the technical field of welding process optimization, and provides a pipeline welding parameter optimization method and system for natural gas transmission system construction, which is used to solve the technical problems of high hydrogen-induced cracking risk, parameter dependence on artificial experience and isolated lag in the optimization process in the welding of shallow hydrogen natural gas transmission pipeline. The method synchronously collects molten pool visual images, joint thermal field, arc electric parameters and environmental data through multiple source sensors, constructs a hydrogen diffusion-thermal coupling model to calculate hydrogen concentration and stress, retrieves reference parameters from a knowledge base, generates current, voltage and speed adjustment amounts through GBDT algorithm, and then real-time correction is performed by a closed loop module. The present application can quantitatively prevent and control hydrogen-induced cracking, reduce the probability of weld failure in a shallow hydrogen environment, improve the process robustness and quality consistency, effectively prolong the safe service life of the pipeline, and meet the demand for high safety energy transmission.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Prediction method based on ABAQUS for residual hydrogen of welded joint

    CN104063530A

  • Hydrogen embrittlement pipe numerical analysis method under multi-field coupling condition

    CN117368435A