Alignment mechanism for pipeline welding on pipe laying ship

Abstract

The invention relates to the technical field of pipeline welding alignment equipment, and discloses an alignment mechanism for pipeline welding on a pipe laying ship. The alignment mechanism comprisesa pipeline I and a pipeline II, wherein a driving control mechanism is movably connected in an inner cavity of the pipeline I in a sleeved mode, one end of the driving control mechanism penetrates through and extends into an inner cavity of the pipeline II, and a stop block mechanism is fixedly installed on one side of the outer part of the driving control mechanism. According to the alignment mechanism for pipeline welding on the pipe laying ship, when the central axes of the pipeline I and the pipeline II are not located at the same position, a piston connecting rod and a contact pressing rod on the piston connecting rod generate extrusion in the process of moving outwards under the hydraulic pushing action of a hydraulic cylinder body, and generate induction current feedback under theaction of an induction ring and a contact ring, then a conveying mechanism on the pipeline II is driven to continuously adjust the position relation between the conveying mechanism and the pipeline I,and then the precision of the alignment mechanism when the alignment mechanism is used for butt joint of ports of the pipeline I and the pipeline II is effectively improved.

Description

technical field [0001] The invention relates to the technical field of pipeline welding counterpart equipment, in particular to a counterpart mechanism for pipeline welding on a pipe laying ship. Background technique [0002] Large-scale underwater systems and operating equipment are key equipment for the development of marine resources. Mastering their key core technologies is particularly important in rebuilding their value chain position and competitive landscape. The carrier of water pipeline laying equipment, its core technology is the pipe laying equipment and pipe laying process for pipelines. [0003] However, in the process of laying submarine pipelines, it is an essential process for pipe nozzle girth welding. Before laying the pipelines on the seabed, it is necessary to weld each section of the pipeline into a whole and then put it into the seabed, and During welding, it is necessary to align the ports of the two pipes together through the automatic conveying mec...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a matching mechanism for pipeline welding on a pipe-laying ship, which has no fan-shaped gap between the ports of two sections of pipelines, high matching precision and improved welding of the circular seam. The advantage of high connection strength solves the problem that the existing girth welding counterparts of the pipe mouth are all stretched on the inner wall of the pipe port, and the ports of the two pipes have been aligned, but this matching method is very easy to cause two pipes There is an inclination between them, so that they are not on the same straight line, causing the gap between the two pipe ports to show a fan-shaped opening, which in turn leads to low connection strength and poor engineering quality during circular seam welding. Under the high-pressure and high-strength working environment on the seabed, it is very easy to cause leakage of the substances transported in the pipeline

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