Fixing Technology of Temporary Auxiliary Support for Pipeline Shipping by Sea
A technology for auxiliary brackets and pipelines, which is applied in the direction of pipeline brackets, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as pipeline constraints, and achieve the effect of reducing welding-type temporary fixation
Active Publication Date: 2018-08-03
CHINA NAT OFFSHORE OIL CORP +2
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Problems solved by technology
[0003] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and to provide a fixing process for temporary auxiliary brackets for pipelines at sea, which not only meets the force requirements for temporary auxiliary fixing of pipelines in different directions, but also solves the problem of modules being transported at sea. In the process, the pipeline of the module is constrained; moreover, no hot work is required on the formal structure, which greatly reduces the impact of welding temporary fixation on the post-paint repair of the module
Method used
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[0022] like figure 1 — Figure 4 Shown, the present invention adopts following steps:
[0023] The first step is to determine the lateral clearance between the upper fixed section steel 1 and the pipe shoe 11 according to the force analysis requirements of the offshore transportation pipeline 10, and determine the axial clearance between the axial limit block 4 and the pipe shoe 11. At the same time, determine the vertical The installation position and quantity of the upper and lower limit blocks 6 and the axial upper and lower limit blocks 7;
[0024] In the second step, the upper fixed section steel 1 and the lower fixed section steel 2 are opened for bolt holes, and one end of the axial limit block 4 is installed on the upper fixed section steel 1 by welding, and the other end of the axial limit block 4 is used Install a steel plate by welding, and open bolt holes on the steel plate; at the same time, install the vertical upper and lower limit blocks 6 on the upper fixed ...
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Disclosed is a fixing technology of a temporary auxiliary support in pipeline marine transportation. The fixing technology includes the steps of 1), determining lateral clearance between upper fixed section steel as well as axial limit blocks and pipe shoes; 2), mounting the axial limit blocks and one ends of vertical up-and-down limit blocks on the upper fixed section steel to form a complete set of pipeline fixing device of marine transportation, and spraying protective paint on the section steel in workshop; 3), mounting the upper fixed section steel and lower fixed section steel on a structural beam, and then connecting one ends of the axial limit blocks with the upper fixed section steel; 4), fastening bolts; 5), identifying positions qualified in inspection; 6), after marine transportation, dismounting the pipeline fixing device for the marine transportation. With the technology, the problem that pipelines of modules are restrained in marine transportation of the modules is solved; fire operation on the formal structure is not needed, and influence on post-paint repair of the modules due to welding-type temporary fixation is greatly reduced.
Description
technical field [0001] The invention relates to a pipeline support, in particular to a fixing process for a pipeline marine temporary auxiliary support for offshore LNG modules and offshore oil production platform modules. It belongs to the field of offshore oil engineering. Background technique [0002] At present, during the sea transportation of the modules, usually, the installed temporary auxiliary brackets of the pipelines are fixed on the transported modules by means of wrapping straps or welding. However, when bandages are used for temporary fixation, the movement of the fixed pipeline in all directions is limited due to the bandage fixation. In fact, according to the stress analysis requirements of the pipeline under the sea condition, the movement of the pipeline in some directions cannot be restricted. . Therefore, this method will have an adverse effect on the stress of the pipeline in the state of sea transportation. When welding is used for temporary fixing,...
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IPC IPC(8): F16L3/04
CPCF16L3/04
Inventor 杨风艳张少华张艳芳唐健王娴何小超韩帅宋文文刘凯
Owner CHINA NAT OFFSHORE OIL CORP