Novel ocean bottleneck type tower-shaped derrick and manufacturing method thereof

Abstract

The invention discloses a novel ocean bottleneck type tower-shaped derrick and a manufacturing method thereof. The derrick is obtained through combining, welding and manufacturing by a structural steel assembly welding tool and integral connection by bolts, the assembly welding tool enables cross splice welding structural members of upright angle iron to be located and clamped fast, advanced manufacturing and welding processes are adopted for a clamping tool, and welding and fast machining of connection devices are completed. Compared with the prior art, the derrick is purely formed by assembling and welding structural steel and is simple in structure, light in total weight, high in strength and good in rigidity; the combination quality of the derrick is guaranteed, and the problems that assembly of work-pieces is difficult, the welding quality is poor, welding deformation occurs and positioning deviation of connection holes occurs in the manufacturing process are solved.

Description

technical field The invention relates to the technical field of marine drilling rigs, in particular to a novel marine bottleneck tower derrick and a manufacturing method thereof. Background technique At present, domestic offshore drilling rig derricks still have the problems of few varieties, uneven specifications, and poor adaptability, especially deepwater drilling rig derricks and ultra-deepwater drilling rig derricks are still in the conceptual design stage. The manufacturing quality of the derrick is closely related to the reliability of the derrick. Whether the manufacturing process can reflect the design intention requires advanced manufacturing process and equipment to ensure. The current practice is to make a large-scale welding work platform, carry out 1B1 lofting according to the derrick drawing, formulate strict PQR and WPS documents, control the size, quality and shape and position tolerance of the structure, make special tooling for key processes, and carry ou...

AI Technical Summary

Problems solved by technology

However, compared with foreign professional oil derrick manufacturers, there is still a big gap in the overall production precision and production scale of the derrick.

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