CN102242831A - Integrated buckle arrestor - Google Patents
Integrated buckle arrestor Download PDFInfo
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- CN102242831A CN102242831A CN2011101082679A CN201110108267A CN102242831A CN 102242831 A CN102242831 A CN 102242831A CN 2011101082679 A CN2011101082679 A CN 2011101082679A CN 201110108267 A CN201110108267 A CN 201110108267A CN 102242831 A CN102242831 A CN 102242831A
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- pipeline
- submarine
- buckle arrestor
- pipe
- submarine pipeline
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Abstract
The invention discloses an integrated buckle arrestor, which is provided with a pipeline matched with a submarine pipeline, wherein the middle part of the pipeline is thicker than two ends of the pipeline. The inside diameter of the pipeline is equal to the outside diameter of the submarine pipeline, and the length La of the pipeline is 0.5D greater than the outside diameter of the submarine pipeline; and the middle part of the pipeline is in arc connection with the two ends of the pipeline. Through the integrated buckle arrestor, the rigidity of the pipeline can be locally enhanced, so that the buckling of the pipeline is prevented from being continuously propagated to the downstream pipeline along the axial direction, and the problem of buckling transfer in the spreading process of the submarine pipeline is solved; and meanwhile, the pipeline can be integrally installed in the prefabricating process, so that the integrity of the pipeline is well kept, and the safety and the economical efficiency are well balanced.
Description
Technical field
The present invention relates to utensil, relate in particular to a kind of deep water undersea pipe-laying process that is used for, strengthen the pipeline local stiffness, prevent the integrated type buckle arrestor of pipeline buckle propagation.Belong to mechanical manufacturing field.
Background technique
At present, in the deep water sea area pipeline construction process of deployment, the buckling problem of pipeline is the crucial difficult problem of puzzlement engineering circle all the time.No matter be to adopt traditional S type laying-out tube process, the J type laying-out tube process that cost is higher, or the higher pipe crimping formula laying-out tube process of working efficiency, submarine pipeline all will be through by bending, the effect of axial tension and outside hydrostatic pressure.Simultaneously, the existence of material nonlinearity and GEOMETRICALLY NONLINEAR makes the laying problem of pipeline become more complicated.Under the external environment condition effect of complexity, cripling very easily takes place in pipeline in the process of deployment of deep-sea, and in a single day the cripling unstability takes place, and meeting be transmitted along the conduit axis direction, and then makes that pipeline configuration takes place to lose efficacy and lost bearing capacity.
The critical pressure Pp of flexing transmission can keep the pipeline flexing exactly and transmit needed pressure minimum, and buckling failure critical pressure PC0 is exactly that pipeline is from the intact pressure maximum that can stand to buckling failure.In general, the size of Pp only is about the 20-30% of PC0, in other words, and pressure that only need be more much smaller than buckling failure, the pipeline flexing defective that has existed is propagated fast along pipeline axial, and such transmission characteristics is extremely disadvantageous to the integrity of submarine pipeline.
Though the flexing that adopts the method that increases pipeline wall thickness can increase pipeline is effectively transmitted critical pressure Pp, in theory, as long as the thickness of pipeline reaches certain ratio, even cripling takes place pipeline, any flexing transmission can not take place yet.Yet, the laying of submarine pipeline also involves the problem of a cost, increase pipeline wall thickness and not only need to increase a large amount of steel using amounts, and, also increased the weight of suspended span section in the process of deployment, force the stretcher of pipe laying barge is upgraded, increased a large amount of laying installation costs directly or indirectly, therefore, go to solve the flexing problem of transmission only according to the increase pipeline wall thickness and seem too cautious, also infeasible economically.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that prior art exists, and provide a kind of integrated type buckle arrestor, it is simple in structure, weight is lighter, can strengthen the rigidity of pipeline in the part, thereby prevent the propagation of pipeline continuation downstream vertically of pipeline flexing, solved the problem that flexing is transmitted in the undersea pipe-laying process; Simultaneously, in the pipe prefabrication process, can carry out integral installation, keep the integrity of pipeline well.
The objective of the invention is to realize by following technological scheme:
A kind of integrated type buckle arrestor is characterized in that: be provided with a segment pipe that matches with submarine pipeline, this pipeline interior thickness is greater than the thickness of pipe ends.
The internal diameter of described pipeline equates with the submarine pipeline external diameter; Duct length L
a＞0.5D submarine pipeline external diameter.
Described pipeline middle part is that arc is connected with the pipe ends junction.
Beneficial effect of the present invention: the present invention is owing to adopt technique scheme, and it can strengthen the rigidity of pipeline in the part, thereby prevents the propagation of pipeline continuation downstream vertically of pipeline flexing, has solved the problem that flexing is transmitted in the undersea pipe-laying process; Simultaneously, in the pipe prefabrication process, can carry out integral installation, keep the integrity of pipeline well, in the middle of Security and Economy, obtain reasonable balance.
Description of drawings:
Fig. 1 is a structure cross-sectional schematic of the present invention.
Fig. 2 is structure of the present invention and submarine pipeline connection diagram.
Major label description in figure:
1 pipeline, 2 pipelines middle part, 3 pipeline junctions, 4 submarine pipelines.
Embodiment
As shown in Figure 1, the present invention is provided with a segment pipe 1 that matches with submarine pipeline, and pipeline middle part 2 thickness are greater than the thickness at pipeline 1 two ends, and the internal diameter of pipeline 1 equates with the submarine pipeline external diameter.Pipeline middle part 2 is connected for arc with the pipeline junction 3 of pipe ends.Pipeline 1 of the present invention adopts steel pipe, and by cutting, welding processing is made.Duct length L
a＞0.5D submarine pipeline external diameter.
As Fig. 2, during use,, and buckle arrestor and submarine pipeline 4 be welded as a whole along the axis of submarine pipeline 4 buckle arrestor that is provided with separated by a distance.Its working principle allows pipeline generation cripling exactly, and still, the flexing transmission can not be crossed over buckle arrestor itself, like this, the flexing of submarine pipeline 4 is only betided between two buckle arrestors.Though buckle arrestor can not be avoided the generation of submarine pipeline cripling, can keep the integrity of pipeline well.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. integrated type buckle arrestor, it is characterized in that: be provided with a segment pipe that matches with submarine pipeline, this pipeline interior thickness is greater than the thickness of pipe ends.
2. integrated type buckle arrestor according to claim 1 is characterized in that: the internal diameter of described pipeline equates with the submarine pipeline external diameter; Duct length L
a＞0.5D submarine pipeline external diameter.
3. integrated type buckle arrestor according to claim 1 and 2 is characterized in that: described pipeline middle part is that arc is connected with the pipe ends junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101082679A CN102242831A (en) | 2011-04-28 | 2011-04-28 | Integrated buckle arrestor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101082679A CN102242831A (en) | 2011-04-28 | 2011-04-28 | Integrated buckle arrestor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102242831A true CN102242831A (en) | 2011-11-16 |
Family
ID=44961017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101082679A Pending CN102242831A (en) | 2011-04-28 | 2011-04-28 | Integrated buckle arrestor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102242831A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115198A (en) * | 2013-02-04 | 2013-05-22 | 天津大学 | Deepwater sea floor reinforcing pipeline |
| CN103115192A (en) * | 2013-02-04 | 2013-05-22 | 天津大学 | Method of strengthening deep water seafloor pipeline stability |
| CN103162013A (en) * | 2013-02-28 | 2013-06-19 | 天津大学 | Combined strengthening type bulking-preventing device capable of preventing submarine pipeline from bulking-propagation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1277364A (en) * | 1969-03-06 | 1972-06-14 | Uniroyal Inc | Improvements in marine hose with floats |
| CN101975313A (en) * | 2010-09-30 | 2011-02-16 | 天津大学 | Submarine pipeline bending-resisting fixer and installing method thereof |
| CN201802977U (en) * | 2010-08-31 | 2011-04-20 | 上海利策科技有限公司 | Novel pipe-in-pipe buckle arrestor |
-
2011
- 2011-04-28 CN CN2011101082679A patent/CN102242831A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1277364A (en) * | 1969-03-06 | 1972-06-14 | Uniroyal Inc | Improvements in marine hose with floats |
| CN201802977U (en) * | 2010-08-31 | 2011-04-20 | 上海利策科技有限公司 | Novel pipe-in-pipe buckle arrestor |
| CN101975313A (en) * | 2010-09-30 | 2011-02-16 | 天津大学 | Submarine pipeline bending-resisting fixer and installing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115198A (en) * | 2013-02-04 | 2013-05-22 | 天津大学 | Deepwater sea floor reinforcing pipeline |
| CN103115192A (en) * | 2013-02-04 | 2013-05-22 | 天津大学 | Method of strengthening deep water seafloor pipeline stability |
| CN103115198B (en) * | 2013-02-04 | 2015-02-18 | 天津大学 | Deepwater sea floor reinforcing pipeline |
| CN103162013A (en) * | 2013-02-28 | 2013-06-19 | 天津大学 | Combined strengthening type bulking-preventing device capable of preventing submarine pipeline from bulking-propagation |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111116 |