Welding machine for internal welding of pipelines

The welding apparatus addresses the challenge of navigating curved sections by allowing the head to deflect relative to the body, using sensors and a control system for precise positioning, enhancing maneuverability and weld quality.

RU2865173C2Active Publication Date: 2026-07-01CHENGDU XIONGGU JIASHI ELECTRICAL
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Patent Information

Application Number
RU2025115738
Authority / Receiving Office
RU · RU
Patent Type
Patents
Current Assignee / Owner
Priority Date
2023-03-02
Filing Date
2023-08-03
Publication Date
2026-07-01
Estimated Expiration
2043-08-03

AI Technical Summary

Technical Problem

Existing internal welding machines for pipelines face challenges in navigating curved sections and slopes due to poor terrain adaptability and maneuverability, leading to difficulties in joining and welding pipes, especially in mountainous areas with significant slopes and small curvature radii.

Method used

A welding apparatus with a head, body, and a first connecting mechanism that allows the head to deflect relative to the body, equipped with sensors for pipeline detection and a control system to adjust position and orientation, enabling the machine to navigate curved sections and adapt to various terrains.

Benefits of technology

The apparatus can automatically adjust its position and orientation to smoothly pass through curved sections, ensuring high-precision welding without manual intervention, improving maneuverability and weld quality.

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Abstract

FIELD: welding equipment.SUBSTANCE: invention relates to a welding machine for internal welding of pipelines. A welding machine for internal welding of pipelines is characterized by the fact that it includes a head (1), a body (2), a first connecting mechanism (3) and a control system, whereas on the head (1) a tensioning mechanism (11) and a welding mechanism (12) are installed, as well as at least one sensor (4) for detecting the pipeline, a running system for movement inside the pipeline is installed on the body (2), the head (1) and the body (2) are connected by a first connecting mechanism (3), wherein the first connecting mechanism (3) has a controlled degree of freedom so that a relative deflection can be carried out between the head (1) and the body (2), and the control system is configured to receive data detected and collected by the sensor (4) and analyse them to obtain control parameters, the first connecting mechanism (3) is configured to perform actions in accordance with the control parameters to regulate the position and orientation of the head (1).EFFECT: ability of the welding machine to freely pass through curved sections of the pipeline, effectively adapting to pipelines with different bending radii, and to carry out welding in such sections.18 cl, 29 dwg
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Citation Information

Patent Citations

  • Pipeline inner welder

    CN110900045A

  • Pipeline internal welding elbow aligning device and method based on visual positioning

    CN113927196A

  • Pipeline internal welding machine

    CN114619197A

  • Pipeline internal welding machine

    CN115008077A

  • Surgical robotic arm and surgical robot

    EP4094708A1