CN101696751A - Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline - Google Patents
Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline Download PDFInfo
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- CN101696751A CN101696751A CN200910309717A CN200910309717A CN101696751A CN 101696751 A CN101696751 A CN 101696751A CN 200910309717 A CN200910309717 A CN 200910309717A CN 200910309717 A CN200910309717 A CN 200910309717A CN 101696751 A CN101696751 A CN 101696751A
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Abstract
The invention belongs to the technical field of paving benthal pipeline facility and relates to a method for preventing buckle propagation and inhibiting vortex-induced vibration of a benthal pipeline. According to the dimensions of an outside diameter and the wall thickness of the benthal pipeline, the method manufactures a plurality of pairs of variable-section and semicircular shells with the same dimensions and structures; the size of an inside diameter of each shell is equal to that of the outside diameter of the benthal pipeline; the outside diameter is changed along the axial direction and makes transition through a bevel; two ends of each shell are thick; the middle part is thin; the outer surface of the middle part of each shell is fixed with a spiral lateral plate and provided with an extended ocular plate; after one pair of the shells is connected to form a variable-section circular column, the spiral lateral plates in the middle parts of the shells are mutually coincided to form the same spiral structure to form a buckle arrestor; and one buckle arrestor is arranged in the radial direction of the benthal pipeline at intervals of a certain distance in the following method. The method can reduce cost, effectively controls the buckle propagation and vortex-induced vibration of the benthal pipeline and realizes the unification of economy and safety.
Description
Technical field
The invention belongs to submarine pipeline facility laying technology field, be specifically related to a kind of method that can prevent the submarine pipeline buckle propagation and suppress vortex-induced vibration.
Background technique
At sea in the process of deployment, the pipeline between pipe laying barge and the seabed exists one section quite long suspended span to submarine pipeline usually, and the length of suspended span is not only relevant with the depth of water, and is subjected to the influence of laying construction load and various complex environments.Can be subjected to some obstacle in the pipe laying process makes pipeline produce excessive bending deflection; After pipe laying is finished, because other external force effects such as collision of falling objects such as anchor and sea bed produce cripling equally.This cripling is in case take place, because of the effect that is subjected to outside hydrostatic pressure easily along the vertical bamboo telegraph of pipeline, finally cause the overall structure inefficacy of pipeline, seriously hinder pipeline and move normally.
In addition, undersea pipe-laying is in uneven sea bed surface, and under the acting in conjunction of factors such as ocean current, morning and evening tides, some zone on the laying route of pipeline pipeline takes place easily is exposed on the ocean bottom soil and forms unsettled section.Under the long term of environmental load, unsettled section easily come-up or lateral buckling and vortex-induced vibration takes place and lost efficacy.
Therefore, the buckle propagation of submarine pipeline and vortex-induced vibration bring enormous economic loss to the exploitation of offshore oil and rock gas, prevent that buckle propagation and vortex-induced vibration from having great importance for submarine pipeline engineering.
Usually take to buckle into modes such as cylindrical steel ring or winding around and reach the anti-bend effect at pipeline external surface.But shortcomings such as the ubiquity consumptive material is many, cost is high, construction process complexity.The method that suppresses vortex-induced vibration by peripheral hardware large volume flow guide device has increased construction cost, has improved the laying difficulty of pipeline simultaneously.At present, also not integrating the device that prevents buckle propagation and suppress vortex-induced vibration occurs.
Summary of the invention
The objective of the invention is to overcome the deficiency on the prior art, provide a kind of and can effectively prevent buckle propagation and the method that suppresses vortex-induced vibration, take proper construction technology, reduce cost, effectively the buckle propagation and the vortex-induced vibration of control submarine pipeline are realized the unification of Economy and Security.
For this reason, the present invention adopts following technological scheme: a kind of method that prevents the submarine pipeline buckle propagation and suppress vortex-induced vibration comprises the following steps:
Size according to submarine pipeline external diameter and wall thickness, make many variable cross section semi-round ring shape housings identical with structure to size, the size of the internal diameter of each housing equates with the external diameter of submarine pipeline, external diameter changes and passes through chamfered transition vertically, two ends are thicker, the middle part is thinner, housing middle part outer surface is fixed with the spiral side plate, overhanging eye plate all is set, pair of shells is behind the circular cylinder that connects into a variable cross section, the spiral side plate at housing middle part coincide mutually and forms same helix structure, constitutes a buckle arrestor;
Directly upwards according to following method a buckle arrestor is installed at submarine pipeline: a housing is close on the pipe surface every a segment distance, according to the identical mode consistent in eye plate position it is docked with another housing, pass eye plate by bolt then two housings are fixed on the pipeline with the sense of rotation of spiral side plate.
As preferred implementation; the length of each housing is got 1.5-2 doubly to described submarine pipeline external diameter; the thickness of two end portions or get 2.5-3.5 doubly to the wall thickness of described submarine pipeline; perhaps choose according to the thickness of the outer concrete weighted coating of described submarine pipeline; the thickness at housing middle part is got 1-1.5 doubly to the wall thickness of protection submarine pipeline, and the height of spiral side plate is got the height on transition inclined-plane.Directly make progress every 12m apart from a buckle arrestor is installed at submarine pipeline.
The invention provides a kind of method that prevents the submarine pipeline buckle propagation and suppress vortex-induced vibration, have the following advantages for existing technology: (1) the present invention can effectively prevent the propagation after the submarine pipeline generation flexing, guarantee the integrity of submarine pipeline integral body, keep away and reduce greatly that submarine pipeline causes structural damage by cripling and the economic loss that causes.(2) be provided with the spiral side plate at the buckle arrestor intermediate portion, when the come-up flexing took place submarine pipeline, buckle arrestor can apply certain disturbance and change reynolds' number when preventing buckle propagation to incoming flow, make flowing state enter turbulence state in advance, reach the effect that suppresses vortex-induced vibration.(3) every lobe hull shape of buckle arrestor is identical, can produce in batches by a mould, has simplified manufacturing process, has reduced manufacture cost.(4) do not influencing under the prerequisite that prevents buckle propagation effect and inhibition vortex-induced vibration, the buckle arrestor intermediate portion to lower recess, can be saved rolled steel dosage by chamfered transition like this, reaches economically viable effect.(5) mounting process of buckle arrestor is simple, can install by production line, increases work efficiency, and reduces construction cost.
Description of drawings
Fig. 1 is the front view that is equipped with certain section submarine pipeline of buckle arrestor;
Fig. 2 is a lobe housing of buckle arrestor, is the worm's eye view of buckle arrestor part among Fig. 1;
Fig. 3 another lobe housing for matching with Fig. 2 middle shell is the plan view of buckle arrestor part among Fig. 1;
Fig. 4 is the A-A sectional drawing among Fig. 1;
Fig. 5 is the B-B sectional drawing among Fig. 1;
Fig. 6 is the C-C sectional drawing among Fig. 2.
The number in the figure explanation:
1 buckle arrestor; 2 eye plates; 3 housings; 4 bolts; 5 housing two end portions; 6 housing intermediate portions; 7 concrete layers; 8 submarine pipelines; 9 spiral side plates
Embodiment
The present invention prevents the submarine pipeline buckle propagation and suppresses vortex-induced vibration by the method for mounting strap spiral side plate buckle arrestor at a certain distance on submarine pipeline.Key step is as follows:
(1) according to the external diameter that will protect submarine pipeline and wall thickness dimension, make the identical semi-round ring shape variable cross section housing of two lobe shapes, can produce in batches by a mould.
(2) submarine pipeline is generally taked prefabricate, at sea welds and lays by pipe laying barge etc.; Pipeline external surface is provided with concrete layer.Therefore, this buckle arrestor was installed before concrete layer is set.
(3) the first lobe housing is close to a side of pipe surface,, another lobe housing is docked with manned housing by the sense of rotation of eye plate position and spiral side plate.
(4) two lobe housings are fixed by 4 bolts.Bolt passes eye plate two lobe housings is connected, and constitutes the buckle arrestor that is fixed on the pipeline external surface.
(5) at the pipe section that installs beyond the buckle arrestor concrete layer is set, buckle arrestor is close in the end.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Be equipped with the front view of certain section submarine pipeline of buckle arrestor, as shown in Figure 1.Submarine pipeline buckle arrestor 1 involved in the present invention is to be connected by bolt by two lobe housings 3 closely to be fixed on pipeline 8 surfaces.Every lobe housing 3 shapes are identical, adopt the production line precasting process, selected for use the API 5L X80 of steel grade.
Every lobe housing 3 is the semi-round ring shape of variable cross section.The two end portions 5 of housing 3 is thicker, has overhanging eye plate 2 above, and bolt 4 passes eye plate 2 and connects two lobe housings 3, constitutes buckle arrestor 1; And the intermediate portion 6 of housing is thinner, has spiral side plate 9 above, plays the upset incoming flow, suppresses the effect of pipeline 8 vortex-induced vibrations.As shown in Figure 6, two end portions 5 is connected by the transition inclined-plane with intermediate portion 6.Spiral side plate 9 is fixed on the housing 3 by casting or spot welding, and it highly gets the height on transition inclined-plane, guarantees that the spiral side plate is just in time concordant with two end portions 5.
Fig. 2 and Fig. 3 are the worm's eye view and the plan view of buckle arrestor 1 among Fig. 1, have shown the winding of spiral side plate 9 at buckle arrestor intermediate portion 6, and their shape is identical, is convenient to produce by batch.Fig. 2 passes eye plate 2 with Fig. 3 by bolt and is connected, the buckle arrestor 1 shown in the constitutional diagram 1.Fig. 4 and Fig. 5 are the A A and the B B sectional drawing of buckle arrestor 1 among Fig. 1, and they have shown the side structure form of buckle arrestor.
Before pipeline is provided with concrete layer 7, buckle arrestor 1 is installed earlier.Detailed process, is passed eye plate 2 by four bolts then buckle arrestor 1 is fixed on the pipeline 8 by docking with another lobe housing in the position of eye plate 2 and the sense of rotation of spiral side plate for earlier a lobe housing being close on pipeline 8 surfaces.At pipeline 8 outer surfaces that install buckle arrestor concrete layer 7 is set.Concrete layer 7 and buckle arrestor 1 end closely connect together, as shown in Figure 1.The 1.5-2 of desirable pipeline 8 external diameters of the length of buckle arrestor 1 doubly, the thickness of two end portions 5 can be with reference to the thickness of concrete layer 7, the wall thickness of also desirable 2.5-3.5 times of pipeline 8, the wall thickness of the desirable 1-1.5 of the thickness of intermediate portion 6 times pipeline 8 is about the desirable 10m of the installation interval of buckle arrestor.
Claims (3)
1. a method that prevents the submarine pipeline buckle propagation and suppress vortex-induced vibration comprises the following steps:
(1) according to the size of submarine pipeline external diameter and wall thickness, make many to the variable cross section semi-round ring shape housing measure-alike, that structure is identical, the size of the internal diameter of each housing equates with the external diameter of submarine pipeline, external diameter changes and passes through chamfered transition vertically, two ends are thicker, the middle part is thinner, housing middle part outer surface is fixed with the spiral side plate, overhanging eye plate all is set, pair of shells is behind the circular cylinder that connects into a variable cross section, the spiral side plate at housing middle part coincide mutually and forms same helix structure, constitutes a buckle arrestor;
(2) directly upwards according to following method a buckle arrestor is installed at submarine pipeline: a housing is close on the pipe surface every a segment distance, according to the identical mode consistent in eye plate position it is docked with another housing, pass eye plate by bolt then two housings are fixed on the pipeline with the sense of rotation of spiral side plate.
2. a kind of method that prevents the submarine pipeline buckle propagation and suppress vortex-induced vibration according to claim 1; it is characterized in that; the length of each housing is got 1.5-2 doubly to described submarine pipeline external diameter; the thickness of two end portions or get 2.5-3.5 doubly to the wall thickness of described submarine pipeline; perhaps choose according to the thickness of the outer concrete weighted coating of described submarine pipeline; the thickness at housing middle part is got 1-1.5 doubly to the wall thickness of protection submarine pipeline, and the height of spiral side plate is got the height on transition inclined-plane.
3. a kind of method that prevents the submarine pipeline buckle propagation and suppress vortex-induced vibration according to claim 1 is characterized in that, directly makes progress every 12m apart from a buckle arrestor is installed at submarine pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103097173A CN101696751B (en) | 2009-11-13 | 2009-11-13 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103097173A CN101696751B (en) | 2009-11-13 | 2009-11-13 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
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| CN101696751A true CN101696751A (en) | 2010-04-21 |
| CN101696751B CN101696751B (en) | 2011-01-05 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963257A (en) * | 2010-09-30 | 2011-02-02 | 天津大学 | Method for fixing seabed pipeline and preventing buckle propagation |
| CN102162554A (en) * | 2011-04-12 | 2011-08-24 | 中国十九冶集团有限公司 | Method and structure of laying ore pulp pipelines in districts of earthquake fracture zone |
| CN102175513A (en) * | 2011-01-14 | 2011-09-07 | 天津大学 | Separable type deepwater seabed pipeline bending test system |
| CN102175437A (en) * | 2011-01-14 | 2011-09-07 | 天津大学 | Buckling test device for deepwater submarine conduit |
| CN102226380A (en) * | 2011-06-20 | 2011-10-26 | 天津大学 | Method for inhibiting vortex-induced vibration of marine riser |
| CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
| CN102359661A (en) * | 2011-08-22 | 2012-02-22 | 天津大学 | Method for manufacturing and fixing submarine pipeline buckle arrestor on basis of morphological energy adsorption |
| CN102705580A (en) * | 2012-06-21 | 2012-10-03 | 天津大学 | Multi-fixation buckling buckle arrestor and method for inhibiting buckle propagation |
| CN102720891A (en) * | 2012-06-28 | 2012-10-10 | 天津大学 | Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor |
| CN103423514A (en) * | 2013-07-18 | 2013-12-04 | 天津大学 | Welded submarine pipeline buckling stopper with base |
| CN104455728A (en) * | 2014-11-25 | 2015-03-25 | 天津大学 | Method for controlling lateral displacement of submarine pipeline |
| CN105424484A (en) * | 2015-12-02 | 2016-03-23 | 天津大学 | Test device for of complex loading and united loading buckling of submarine pipeline |
| CN105760569A (en) * | 2015-12-30 | 2016-07-13 | 中国海洋大学 | Snap-in type buckle arrestor fixing bolt size determining method |
| CN107339200A (en) * | 2017-08-23 | 2017-11-10 | 华侨大学 | Stainless steel concrete composite pillar for marine environment |
| CN113217752A (en) * | 2021-05-12 | 2021-08-06 | 天津大学 | Buckle-in buckle arrestor with vortex-induced vibration suppression function |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9001484A (en) * | 1990-06-29 | 1992-01-16 | Submarine Pipeline Spoiler Bv | PIPELINE WITH GROUND ANCHORS. |
| US6347911B1 (en) * | 1996-06-11 | 2002-02-19 | Slickbar Products Corp. | Vortex shedding strake wraps for submerged pilings and pipes |
| CN101387188B (en) * | 2008-11-04 | 2012-07-04 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
-
2009
- 2009-11-13 CN CN2009103097173A patent/CN101696751B/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963257A (en) * | 2010-09-30 | 2011-02-02 | 天津大学 | Method for fixing seabed pipeline and preventing buckle propagation |
| CN101963257B (en) * | 2010-09-30 | 2013-01-23 | 天津大学 | Method for fixing seabed pipeline and preventing buckle propagation |
| CN102175513B (en) * | 2011-01-14 | 2012-11-14 | 天津大学 | Separable type deepwater seabed pipeline bending test system |
| CN102175513A (en) * | 2011-01-14 | 2011-09-07 | 天津大学 | Separable type deepwater seabed pipeline bending test system |
| CN102175437A (en) * | 2011-01-14 | 2011-09-07 | 天津大学 | Buckling test device for deepwater submarine conduit |
| CN102162554A (en) * | 2011-04-12 | 2011-08-24 | 中国十九冶集团有限公司 | Method and structure of laying ore pulp pipelines in districts of earthquake fracture zone |
| CN102162554B (en) * | 2011-04-12 | 2013-03-06 | 中国十九冶集团有限公司 | Method and structure of laying ore pulp pipelines in districts of earthquake fracture zone |
| CN102226380A (en) * | 2011-06-20 | 2011-10-26 | 天津大学 | Method for inhibiting vortex-induced vibration of marine riser |
| CN102226380B (en) * | 2011-06-20 | 2013-08-28 | 天津大学 | Method for inhibiting vortex-induced vibration of marine riser |
| CN102359661A (en) * | 2011-08-22 | 2012-02-22 | 天津大学 | Method for manufacturing and fixing submarine pipeline buckle arrestor on basis of morphological energy adsorption |
| CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
| CN102705580A (en) * | 2012-06-21 | 2012-10-03 | 天津大学 | Multi-fixation buckling buckle arrestor and method for inhibiting buckle propagation |
| CN102720891B (en) * | 2012-06-28 | 2014-07-02 | 天津大学 | Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor |
| CN102720891A (en) * | 2012-06-28 | 2012-10-10 | 天津大学 | Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor |
| CN103423514B (en) * | 2013-07-18 | 2015-06-17 | 天津大学 | Welded submarine pipeline buckling stopper with base |
| CN103423514A (en) * | 2013-07-18 | 2013-12-04 | 天津大学 | Welded submarine pipeline buckling stopper with base |
| CN104455728A (en) * | 2014-11-25 | 2015-03-25 | 天津大学 | Method for controlling lateral displacement of submarine pipeline |
| CN104455728B (en) * | 2014-11-25 | 2016-06-29 | 天津大学 | A kind of submarine pipeline lateral displacement control method |
| CN105424484A (en) * | 2015-12-02 | 2016-03-23 | 天津大学 | Test device for of complex loading and united loading buckling of submarine pipeline |
| CN105424484B (en) * | 2015-12-02 | 2018-05-04 | 天津大学 | Submarine pipeline complex load combination loading buckling test device |
| CN105760569A (en) * | 2015-12-30 | 2016-07-13 | 中国海洋大学 | Snap-in type buckle arrestor fixing bolt size determining method |
| CN105760569B (en) * | 2015-12-30 | 2019-06-07 | 中国海洋大学 | Buckle into formula buckle arrestor fixing bolt method for determining size |
| CN107339200A (en) * | 2017-08-23 | 2017-11-10 | 华侨大学 | Stainless steel concrete composite pillar for marine environment |
| CN113217752A (en) * | 2021-05-12 | 2021-08-06 | 天津大学 | Buckle-in buckle arrestor with vortex-induced vibration suppression function |
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Granted publication date: 20110105 Termination date: 20111113 |