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Technological method of partly submerged type platform complex K type node welding

A welding process and node technology, which is applied in the field of semi-submersible platform complex K-type node welding process, can solve the problems of complex K-type node welding process and K-type node welding reliability, so as to improve welding construction efficiency and improve welding efficiency. Accessibility, guaranteed penetration effect

Active Publication Date: 2008-06-04
DALIAN SHIPBUILDING IND
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  • Abstract
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Problems solved by technology

[0003] The present invention solves the welding reliability problem of K-type joints and provides a welding process for complex K-type joints of submersible platforms

Method used

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  • Technological method of partly submerged type platform complex K type node welding

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Embodiment Construction

[0007] The complex K-type joint welding process method of this submersible platform of the present invention is used for the welding of BINGO 9000 submersible platform K-type joints in the exploration of deep sea oil / natural gas resources, and the three sections of pipes of the K-type joints are placed correspondingly (see Fig. 1 ), the circumference of the 30-degree oblique pipe joint is intersected with the outside of the transverse pipe. The welding groove of the oblique pipe adopts the form of variable angle and blunt edge in the whole circle of the joint of the intersecting line. To the upper and lower midpoints, it is the inner groove and gradually decreases from the maximum to zero; if it is the outer groove from the obtuse angle end A of the oblique pipe to the upper midpoint B, it is gradually reduced from the largest groove to zero, and from the acute angle of the oblique pipe From end C to upper middle point B, it is an inner bevel and gradually decreases from maxim...

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Abstract

The present invention relates to a semi-submerged platform complex double-bevel type node welding process. It is characterized by that said double-bevel type node includes three parts of pipe material (including two oblique crossed pipes and one transverse pipe), said three parts of pipe material are correspondently arranged. Said invention also provides their concrete arrangement mode. It order to ensure welding reliability its baking weld adopts covered electrode arc welding, and its filling and cosmetic welding adopts flux-cored wire CO2 gas protective welding process.

Description

Technical field: [0001] The complex K-shaped node welding process of the submersible platform is a welding process method for the floating body bearing K-shaped structure part of the marine exploration and mining platform device. Background technique: [0002] The semi-submersible platform is an exploration and exploitation device for deep sea oil / natural gas resources. Due to the extremely harsh working environment, the technical and safety requirements are extremely high. The platform consists of two large floating bodies that carry the entire structure and various equipment, and the floating bodies are supported and connected by a large pipe structure. Complicated K-shaped joints are formed between the support tubes. The structure plays a vital role in the safety of the platform, and the welding requirements are extremely high. Welding construction of a similar structure has not been carried out before. Invention content: [0003] The invention solves the welding re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/032B23K9/16B23K33/00
Inventor 高真所陈绍全于立新李生鹏关伟姝严锦林孙德状邓强
Owner DALIAN SHIPBUILDING IND
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