CN2835416Y

CN2835416Y - Semi-submersible type platform supporting K-shape node structure

Info

Publication number: CN2835416Y
Application number: CN 200520093049
Authority: CN
Inventors: 马延德; 杨华; 邓强; 严锦林; 陈继茂; 东方; 隋俊烈
Original assignee: DALIAN NEW SHIPBUILDING HEAVY INDUSTRIES Co Ltd
Current assignee: Dalian Shipbuilding Industry Co Ltd
Priority date: 2005-10-25
Filing date: 2005-10-25
Publication date: 2006-11-08
Anticipated expiration: 2015-10-25

Abstract

The utility model relates to a semi-submersible type platform supporting K type node structure which comprises a horizontal pipe and two oblique crossing pipes which are obliquely crossed, with the oblique crossing end abutted with the side surface of the horizontal pipe, wherein the periphery of the node of the oblique crossing pipes is communicated with the outside of the horizontal pipe; one round of a welding groove arranged on the oblique crossing end of the oblique crossing pipes has a variable angle and an obtuse side at the joint of the whole intersecting line. The position from the obtuse end of the oblique crossing pipes to the up-down midpoint is provided with an outer groove which is gradually reduced from the maximum to zero. The position from the acute angle end of the oblique crossing pipes to the up-down midpoint is provided with a groove on the inner side and the groove is gradually reduced from the maximum to zero. The inside and the outside of the periphery of the node at the oblique crossing end of the oblique crossing pipes, as well as the groove and the side surface of the horizontal pipe are welded by welding material. The welding reliability of the inside and the outside is ensured, and simultaneously, the efficiency of welding construction is enhanced.

Description

Semisubmersible platform supports K type node structure

Technical field: semisubmersible platform supports K type node structure, is the frame mode and the welded construction of the enhancing structure division in the buoyancy aid carrying support of seafari and production platform device.

Background technology: semisubmersible platform is the exploration and the quarrying apparatus of deep-sea oil/natural gas resource.Because working environment is extremely abominable, technology and security requirement are high.Platform is by two large-scale buoyancy aids carrying totals and various device, supports by large-scale tubular structure between buoyancy aid and links into an integrated entity.The welded construction that forms of effective enhancing structure between stay pipe and structure wherein plays fundamental influence to the safety of platform, connected mode connect require high.Do not carry out similar K type node structure and welded construction in the past.

Summary of the invention:

The present invention solves exactly to supporting integrity problem by large-scale tubular structure between buoyancy aid, and a kind of semisubmersible platform stay pipe K type node structure is provided.

Of the present invention in order to address the above problem, semisubmersible platform supports K type node structure, it is characterized in that: the oblique pipe that has a transverse tube and two obliques and oblique end and transverse tube side to connect, oblique pipe node circumference passes through mutually with the transverse tube outside, the bevel for welding of oblique pipe oblique end is a varied angle in whole one week of intersection joint, the rust limit, open from oblique pipe obtuse angle end to mid point up and down for outer groove and from being up to and zeroly reduce gradually, open for inboard groove and from being up to zero from oblique pipe acute ends to mid point up and down and to reduce gradually, oblique pipe oblique end node circumference inside and outside and groove and transverse tube side are welded by scolder.The stay pipe K type node structure of Xing Chenging like this, process is the corresponding placements of three sections tubing, oblique pipe node circumference passes through mutually with the transverse tube outside, oblique pipe bevel for welding adopts the form on varied angle, rust limit in whole one week of intersection joint, open for outer groove and from being up to zero from oblique pipe obtuse angle end to mid point up and down and to reduce gradually, open from oblique pipe acute ends to mid point up and down for inboard groove and from being up to and zeroly reduce gradually; Weld from the about two sides of oblique pipe node circumference, covered-electrode welding (SMAW) is adopted in the welding bottoming, and filling and capping adopt flux-cored wire CO ₂Gas shielded arc welding (FCAW).

The present invention compared with the prior art, it is as follows to have advantage: K type node structure makes between buoyancy aid by large-scale tubular structure support strength higher, simple for structure, has reduced cost; By rationally determining on groove, adapted to the different particularity of each point nature angle on the oblique pipe node circumferential weld simultaneously, the groove type of gradual change has guaranteed about two sides soldering reliability; With suitable gap, improved the access for welding of thick-walled pipe node, guaranteed the through welding of the root of weld, guaranteed the reliability that connects, both adapted to the characteristics of pipe node all-position welding, improved the efficiency of construction of large-scale tubular structure braced structures simultaneously.

Description of drawings: accompanying drawing has represented that a kind of semisubmersible platform of the present invention supports K type node structure schematic diagram, wherein Fig. 1 is a K type node structure master schematic diagram, Fig. 2 is the groove type structural representation, Fig. 3,4,5 is respectively A, B, 3 mutual alignment structural representations of C, and Fig. 6,7,8 is respectively the welded condition structural representation of 3 of A, B, C.Example below in conjunction with accompanying drawing further specifies.

Specific embodiment: this semisubmersible platform of the present invention supports K type node structure, the oblique pipe that has a transverse tube and two obliques and oblique end and transverse tube side to connect, oblique pipe node circumference passes through (see figure 1) mutually with the transverse tube outside, the bevel for welding of oblique pipe oblique end is a varied angle in whole one week of intersection joint, the rust limit, open from oblique pipe obtuse angle end A to mid point B up and down for outer groove and from being up to and zeroly reduce gradually, open for inboard groove and from being up to zero from oblique pipe acute ends C to mid point B up and down and to reduce (see figure 2) gradually, oblique pipe oblique end node circumference inside and outside and groove and transverse tube side are welded by scolder and (are seen Fig. 6,7,8).Welding technique is corresponding place (referring to the Fig. 1) of three sections tubing with K type node, and 30 degree oblique pipe node circumference pass through mutually with the transverse tube outside.Oblique pipe bevel for welding adopts the form on varied angle, rust limit in whole one week of intersection joint, open for outer groove and from being up to zero from oblique pipe obtuse angle end to mid point up and down and to reduce gradually, open from oblique pipe acute ends to mid point up and down for inboard groove and from being up to and zeroly reduce gradually; As open from oblique pipe obtuse angle end A to last mid point B for outside groove and be reduced to zero gradually from maximum groove, open from oblique pipe acute ends C to last mid point B for inboard groove and from maximum and be reduced to zero gradually.Weld from the about two sides of oblique pipe node circumference, weld whole intersection joint after, just formed as Fig. 6,7,8 welded condition; By rationally determining of each point on groove (referring to Fig. 3,4,5), adapted to the different particularity of each point nature angle on the oblique pipe node circumferential weld, the groove type of gradual change welds from about two sides, improve the access for welding of thick-walled pipe node, guaranteed the through welding of the root of weld; Both adapt to the characteristics of pipe node all-position welding, improved welding procedure efficient simultaneously.

Claims

1, a kind of semisubmersible platform supports K type node structure, it is characterized in that: the oblique pipe that has a transverse tube and two obliques and oblique end and transverse tube side to connect, oblique pipe node circumference passes through mutually with the transverse tube outside, the bevel for welding of oblique pipe oblique end is a varied angle in whole one week of intersection joint, the rust limit, open from oblique pipe obtuse angle end to mid point up and down for outer groove and from being up to and zeroly reduce gradually, open for inboard groove and from being up to zero from oblique pipe acute ends to mid point up and down and to reduce gradually, oblique pipe oblique end node circumference inside and outside and groove and transverse tube side are welded by scolder.