LNG pipeline based on offshore engineering platform

Abstract

The invention provides a liquefied natural gas conveying pipeline based on an ocean engineering platform. The pipeline comprises a first pipeline body, a second pipeline body and a connecting pipe, and the outer wall of the connecting pipe is of a regular octagon shape structure; inserting grooves are formed in the inner walls of the connecting ends of the first pipeline body and the second pipeline body respectively, inserting blocks located at the two ends of the connecting pipe are inserted into the inserting grooves in the first pipeline body and the second pipeline body respectively, andthe connecting pipe, the first pipeline body and the second pipeline body are fixed through welding. The short-pipe split welding mode is adopted for assembling and forming, late-period conveying is easy, and a high identification effect is realized.

Description

technical field [0001] The invention relates to a delivery pipeline, in particular to a liquefied natural gas delivery pipeline based on an ocean engineering platform. Background technique [0002] The butt welds of pipelines in the fields of shipbuilding, papermaking, petrochemical and nuclear power are usually manual arc welding. Later, with the continuous emergence of welded pipe technology, semi-automatic welding and fully automatic welding have also been experienced. With the advancement of technology, the improvement of labor productivity and the improvement of product quality requirements, the above welding methods can no longer meet the work requirements. Due to the diameter limitation of pipeline welding, manual manual arc welding has to use manual arc welding outside the pipe. The smoothness of the front and back sides cannot be reached, the performance index cannot be reached, and the flexibility of the welding operation is poor, and the stress on the pipe fitting...

AI Technical Summary

Problems solved by technology

With the advancement of technology, the improvement of labor productivity, and the improvement of product quality requirements, the above welding methods can no longer meet the work requirements. Due to the diameter limitation of pipeline welding, manual manual arc welding has to use manual arc welding on the outside of the pipe. The smoothness of the front and back sides cannot be reached, the performance index cannot be reached, and the flexibility of the welding operation is poor, and the force on the pipe fittings is uneven, which leads to extrusion deformation of the thin-walled steel pipe

[0003] The existing delivery pipelines are all long tubes. Although the production is simple, the transportation is inconvenient and the marking is not obvious, which is not conducive to the later assembly operation

Images