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Boltless locking arrangement

A locking device and fastening technology, applied in wellbore/well components, pipeline laying and maintenance, flange connection, etc., can solve problems such as high cost

Inactive Publication Date: 2013-08-14
AKER SUBSEA AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bolts and bolts of a certain quality in the machine are necessary to do these jobs, and their cost is relatively large

Method used

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  • Boltless locking arrangement
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  • Boltless locking arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] First, reference is made to the diagram schematically showing a pipe branch table 1 fixed to or held in a structural member 2 Figure 1A and Figure 1B . For the sake of clarity, these components are completely separated from the rest of the structure, such as connections or similar components on the seabed, which are not shown in the figures. The pipe branch table 1 is held to the structural part 2 by a main body 3 formed by an annular plate, the main body 3 shown here being made of two separate segments 3a and 3b, between which There are separation lines (cracks) between them. Small screws 4 hold the individual segments 3a and 3b in place, but otherwise have no load-bearing function. An alternative to the screw 4 could be a fixing member such as a pin bolt and nut. Reference sign C marks the center line or central axis of the branch table 1 . The central axis C is substantially perpendicular to the plane of the structural part 2 when these parts are assembled on e...

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PUM

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Abstract

A "boltless" locking arrangement for secure attachment of a boss to a fixed structural part is shown. The boss has a central axis and is extending substantially perpendicular to the plane of the structural part when the parts are assembled. The arrangement includes two substantially radially extending, when viewed relative to the central axis, action surfaces provided in the external surface of the boss, and at least one annular plate configured body made up by individual segments. The at least one annular plate configured body is at its radially inner, but external portion designed to co-operate, or engage with, at least one of the respective two action surfaces, and at its radially outer, but internal portion and on opposite side, is abutting the fixed structural part.

Description

technical field [0001] The present invention relates to a locking device for securely attaching a boss to a fixed structural component without the use of set bolts, wherein the boss, when said components are assembled, There is a central axis extending substantially perpendicular to the plane of the structural member. Background technique [0002] Sometimes, the detachable structural components holding the pipe branch are subjected to bending forces so high that the pipe branch is destroyed even though the pipe branch is supported by thick flanges and high strength tightly juxtaposed in the bolt circle. The bolts are fastened. This is especially true in pipeline installations located on the seabed, where relatively large size pipes are connected to pipe piles or pipe ledges and are subjected to extremely large bending moments. [0003] Traditionally, pipe sockets of the type in question are designed with integrated flanges, ie they are made in one piece with the pipe pile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L5/00E21B33/04
CPCF16L1/26F16L5/00F16L5/12F16L23/0283F16L23/0286
Inventor 约翰·拉尔森
Owner AKER SUBSEA AS