Building technology for pile leg of self-elevating wind power vessel

Abstract

The invention relates to a building technology for a pile leg of a self-elevating wind power vessel. The building technology mainly comprises the following steps that cylinders are rolled, wherein rolling is carried out on the two ends, the middle part is rolled after the two ends are rolled in place, rolling is carried out in place again, longitudinal seam welding is carried out after positioned welding, and final roundness restoration is carried out; the cylinders are welded, wherein the cylinders are matched, an assembling machine is used for assembling, positioning welding is carried out, and finally welding is carried out; pre-assembling is carried out in a workshop, wherein the overall linearity of a reference section, the gap and the alignment tolerance are adjusted, technological flanges are assembled and welded in place, and the cross central line, the height reference line and the central line of a bolt hole are marked out on the reference section; bolt holes are cut, wherein an upper section and a lower section are rotated to the position of a saddle-shaped cutting machine, the central line of the pile leg is adjusted to be parallel to a track of the saddle-shaped cutting machine, and cutting is carried out according to the marked lines. The building technology has the advantages that various building requirements of the pile leg can be ensured, meanwhile, the building efficiency can be improved, and the building cost can be reduced.

Description

technical field [0001] The invention relates to the field of self-elevating wind power ships, and particularly designs a construction process for legs of self-elevating wind power ships. Background technique [0002] With the acceleration of the development of offshore wind power energy, the development prospects of wind power installation equipment are becoming more and more broad. The jack-up wind power installation ship, as the necessary equipment for wind power pipe pile installation, has also been in short supply. Naturally, it has become one of the engineering ships that major equipment companies are vying to manufacture. As an important structure of the hoisting system, the pile legs have very strict construction accuracy requirements. The overall straightness and shape and position tolerances of the pin holes are equivalent to the accuracy of the overall machining. The shape tolerance of the pin holes is 1mm, and the horizontal position tolerance is within 1.5mm. Th...

AI Technical Summary

Problems solved by technology

At present, it is still the first in China, and there is no precedent. It is a difficult challenge for all aspects of rolling, lengthening, assembling, and cutting holes.

Images