CN102720891B - Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor - Google Patents
Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor Download PDFInfo
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- CN102720891B CN102720891B CN201210218983.7A CN201210218983A CN102720891B CN 102720891 B CN102720891 B CN 102720891B CN 201210218983 A CN201210218983 A CN 201210218983A CN 102720891 B CN102720891 B CN 102720891B
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Abstract
The invention belongs to the technical field in the process of laying submarine pipeline facilitates, and relates to a submarine pipeline buckle arrestor with spiral eye plates, which is used for protecting submarine pipelines. The submarine pipeline buckle arrestor comprises two shells with eye plates which are extended outwards, wherein the two shells have the same size and structure; each eye plate is a spiral side wing eye plate; grooves or strakes which have the same spiral angle as the eye plates are arranged on the two shells; and after the two shells are connected to form an annular cylinder, the spiral side wing eye plates, the grooves or the strakes on the two shells are coincided with each other respectively to form a spiral structure with the same angle. The submarine pipeline buckle arrestor has a simple structure and is easy to process and mount; the failure of the buckle arrestor caused by damages to bolts can be effectively prevented while the cost is reduced; and the buckle propagation of the submarine pipelines can be controlled, and the vortex induced vibration of the pipelines can be prevented.
Description
Technical field
The invention belongs to the technical field in submarine pipeline facility process of deployment, be specifically related to a kind of device that can effectively prevent the propagation of submarine pipeline flexing and suppress pipeline vortex-induced vibration.
Background technique
Submarine pipeline is that a kind of important marine oil and gas is produced transfer ways.Due to deep water ocean environment complexity, submarine pipeline bears huge hydrostatic pressure.In addition in shock that, the weight such as irrational operation in pipe laying process, anchor falls, deep-water low-temperature environment and pipe, carry the temperature difference that deep fat liquid forms and carry the factors such as local etching that liquid may form pipeline all likely to cause the cripling conquassation of submarine pipeline.After the conquassation of pipeline generation cripling, outside certain, under Water Pressure, the conquassation form of pipeline will be propagated along pipe range direction, the destruction of causing whole piece pipeline, this phenomenon is exactly buckle propagation phenomenon, and maintaining the needed minimum pressure outside of pipeline buckle propagation is exactly buckle propagation pressure.Control developing of buckle propagation, need make external pressure be down to below buckle propagation pressure, or buckle propagation suffers the physical obstacle that it cannot pass through.
Can effectively increase by increasing the mode of pipeline wall thickness in theory the buckle propagation critical pressure of pipeline, but the increase of pipeline wall thickness can roll up material consumption and pipeline weight, has increased a large amount of costs, infeasible economically.Therefore the method for at present comparatively conventional control buckle propagation is that physical obstacle is set---buckle arrestor.The working principle of buckle arrestor is in the time of the conquassation of pipeline generation flexing and propagation, propagation is controlled between two buckle arrestors, thereby avoids whole piece pipeline to wreck.
The citation form of buckle arrestor is a thick ring, and current conventional buckle arrestor, according to the difference of installation form, can be divided into the formula of buckling into, wrap style, integrated type and welding type buckle arrestor.The formula buckle arrestor of buckling into is first screwed into pipeline specified position and then directly clamps, wrap style buckle arrestor is wound around at the specified position of pipeline, the internal diameter of integrated buckle arrestor is the same with the internal diameter of pipeline, and wall ratio pipeline is thicker, and both are joint welding again after coaxially sequencing.Buckling on the basis of formula buckle arrestor, being connected between itself and pipeline increases twice weld seam and just formed welding type buckle arrestor.Although integrated buckle arrestor anti-bend best performance is higher to welding process requirement, complexity is installed, and weight is heavier.Buckle into formula buckle arrestor simple in structure, easily manufactured, but anti-bend efficiency is lower, and at pipeline buckle propagation during to buckle arrestor position, because pipeline flattening deformation will apply larger tensile force to buckle arrestor connecting bolt, may cause the accidents such as buckle arrestor bolt collapses out, fracture, cause buckle arrestor failure effect pipeline general safety.
In addition, undersea pipe-laying is in uneven sea bed surface, under the acting in conjunction of the factor such as ocean current, morning and evening tides, along some region in the laying route of pipeline, pipeline easily occurs and be exposed on ocean bottom soil and form unsettled section.Under the long term of environmental load, unsettled section easily there is floating or lateral buckling and vortex-induced vibration and lost efficacy.
The buckle propagation of submarine pipeline and vortex-induced vibration, bring huge economic loss to the exploitation of offshore oil and rock gas, prevention and control buckle propagation and vortex-induced vibration, and can prevent that the bolt accident that breaks from having great importance for submarine pipeline engineering.Submarine pipeline bending arrestor and the fixation method thereof of patent of invention CN200910309743.6(with spiral side plate) submarine pipeline bending arrestor that provides, realize prevention and control buckle propagation and vortex-induced vibration by spiral side plate, but this kind of buckle arrestor can not prevent the generation of the accidents such as bolt collapses out, fracture effectively, and the processing technology of this kind of buckle arrestor is comparatively complicated.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of can effectively control submarine pipeline buckle propagation and solve bolt break accident, suppress the submarine pipeline of pipeline vortex-induced vibration.The apparatus structure that the present invention proposes is simple, is easy to processing and installs, and can effectively prevent that bolt from destroying the buckle arrestor causing and losing efficacy when reducing costs, controls the buckle propagation of submarine pipeline and suppresses pipeline vortex-induced vibration, realizes the unification of Economy and Security.
For achieving the above object, the present invention takes following technological scheme:
A kind of submarine pipeline bending arrestor with spiral eye plate; for the protection of submarine pipeline; comprise two housings that overhanging eye plate is all set; the size of two housings is identical with structure, it is characterized in that, each eye plate is helical flank eye plate; on two housings, be also provided with and groove or the strake of eye plate with angle spiral; two housings connect into after a circular cylinder, and helical flank eye plate, groove or the strake on two housings coincide separately mutually, form the helix structure with angle.
The present invention provides a kind of fixation method of above-mentioned buckle arrestor simultaneously, comprise the following steps: a housing to be close on pipe surface, according to the identical mode consistent with helix structure sense of rotation in eye plate position, it is docked with another housing, then pass eye plate by bolt two housings are fixed on pipeline.
The present invention is owing to taking above technological scheme, and it has the following advantages:
The invention provides and a kind ofly effectively prevent that bolt from destroying the device that the buckle arrestor that causes lost efficacy, controls the buckle propagation of submarine pipeline and suppressed pipeline vortex-induced vibration, has the following advantages compared to existing technology:
(1) the present invention includes two housings that size is identical with structure, each housing all arranges overhanging helical eye plate, uses bolt to carry out the fastening of upper-lower casing.Due to bolt and buckle arrestor circumferentially at an angle, also continue in the process of distortion at submarine pipeline buckle propagation to buckle arrestor, buckle arrestor bolt different from the past is only subject to the situation of axial tension, the present invention is less tensile force and shearing force by the power Orthogonal Decomposition being applied on bolt, effectively prevent bolt to be subject to fracture and the destruction of the larger generation of pulling force, guarantee the completeness and efficiency of buckle arrestor, thereby more effectively prevent buckle propagation, guarantee the integrity of submarine pipeline entirety, the economic loss that greatly reduces submarine pipeline to cause overall structure destruction by cripling and to cause.
(2) on the each housing of the present invention, arrange and helical groove or the strake of eye plate with angle, in the time that the situation of unsettled or floating flexing appears in submarine pipeline, can apply certain disturbance and change reynolds' number to incoming flow, make flowing state enter in advance turbulence state, reach the effect that suppresses vortex-induced vibration.
(3) this device integrates the function of controlling buckle propagation and preventing vortex-induced vibration, can realize the integrally manufactured of two kinds of function modules and install.If adopt spiral strake structure, the setting of strake not only can prevent vortex-induced vibration, and has played the effect of inhomogeneous reinforcement hoop rigidity, improves the anti-bend effect of whole device.
(4) two of buckle arrestor housings are identical, can be by the mould batch production of casting, and simplified manufacturing technique, reduces manufacture cost.
(5) buckle arrestor mounting process is simple, can install by production line, increases work efficiency, and reduces construction cost.
(6) this anti-bend device can be applied to the naked pipeline of putting seabed, the cost of greatly reduce pipeline ditching, burying underground.
Accompanying drawing explanation
Fig. 1 is the side view of being furnished with certain section of submarine pipeline of anti-bend device of the present invention
Fig. 2 is the A of A shown in Fig. 1 sectional view (band groove)
Fig. 3 is the A of A shown in Fig. 1 sectional view (band strake)
Number in the figure explanation:
1 anti-bend device case; 2 flank spiral eye plates; 3 connect clamping bolt; 4 helical grooves or strake; 5 submarine pipelines.
Embodiment
Be described in detail of the present invention below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes two lobes and be close to the thick wall shell 1 on submarine pipeline outer wall, every lobe housing respectively with helical flank eye plate 2 and with groove or the strake 4 of eye plate with angle spiral, upper hypovalve housing full symmetric.Housing should adopt and the API 5L X65 type of the identical material of deep water submarine pipeline or more high-grade X70, X80 grade steel with eye plate material, and main purpose is the propagation that prevents submarine pipeline flexing under complex environment and load, guarantees the safety of whole piece pipeline.Adopt bolt to be fixed with the flank eye plate of housing one, to buckle into formula buckle arrestor different from common bolt pinching, due to eye plate along buckle arrestor housing in the shape of a spiral, therefore connect clamping bolt axial non-perpendicular to pipeline and buckle arrestor, but with pipeline and buckle arrestor circumferentially at an angle.When submarine pipeline generation flexing and while being transmitted to buckle arrestor, the pipeline flattening imposes radial drawing power to buckle arrestor, while being delivered on the bolt at certain angle of inclination, tensile force by Orthogonal Decomposition be less along bolt axis to tensile force and shearing force, guarantee the safety of bolt, thereby guarantee the completeness and efficiency of anti-bend device.Eye plate and groove or the strake acting in conjunction of spiral simultaneously applies certain disturbance and changes reynolds' number to incoming flow in the time that the situation of unsettled or floating flexing appears in submarine pipeline, prevents that vortex-induced vibration from occurring.The extended spiral eye plate of two-part thick wall shell flank, also facilitates bolt to penetrate eye plate simultaneously and is connected, and makes the processing of anti-bend device and installs all very easy.
The method implementation process of this control submarine pipeline buckle propagation and inhibition vortex-induced vibration is described below in conjunction with accompanying drawing:
(1) while carrying out the production of this anti-bend device, the spiral annular thick wall shell 1 in connection edge shown in working drawing first respectively.The size of the internal diameter of housing equates with the external diameter of submarine pipeline, housing two flanks extend helical eye plate 2, eye plate is with equally distributed bolt hole, and 1/2 position of housing section semicircle is provided with the groove along buckle arrestor axial screw or the strake 4 that are same angle with eye plate.Because two lobe housings are identical, can use unified mould to carry out batch casting and produce, also can eye plate or strake and housing be welded to connect according to actual conditions.
(2) installation of anti-bend device should be after housing manufacture completes, carry out before pipelaying work.Submarine pipeline is generally taked prefabricate, utilizes pipe laying barge etc. weld and lay at sea, and therefore, the buckle arrestor of this invention can be installed in the welding process of pipe laying barge.The first lobe housing is close to a side of pipe surface, according to the sense of rotation of eye plate helix structure, another lobe housing is docked with manned housing, and it is fastening to adopt bolt to connect.Bolt connects two lobe housings through eye plate, forms the anti-bend device being fixed on pipeline external surface.As shown in the figure, spiral eye plate and helical groove/strake are staggered, not only can prevent vortex-induced vibration, also can strengthen buckle arrestor hoop rigidity, effectively suppress buckle propagation for mounted buckle arrestor.
Claims (2)
1. the submarine pipeline bending arrestor with spiral eye plate; for the protection of submarine pipeline; comprise two housings that overhanging eye plate is all set; the size of two housings is identical with structure, it is characterized in that, each eye plate is helical flank eye plate; on two housings, be also provided with and groove or the strake of eye plate with angle spiral; two housings connect into after a circular cylinder, and helical flank eye plate, groove or the strake on two housings coincide separately mutually, form the helix structure with angle.
2. the fixation method of a submarine pipeline bending arrestor claimed in claim 1, it is characterized in that, comprise the following steps: a housing to be close on pipe surface, according to the identical mode consistent with helix structure sense of rotation in eye plate position, it is docked with another housing, then pass eye plate by bolt two housings are fixed on pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210218983.7A CN102720891B (en) | 2012-06-28 | 2012-06-28 | Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor |
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| CN201210218983.7A CN102720891B (en) | 2012-06-28 | 2012-06-28 | Submarine pipeline buckle arrestor with spiral eye plates and fixation method for submarine pipeline buckle arrestor |
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| CN102720891B true CN102720891B (en) | 2014-07-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276287A (en) * | 2014-07-10 | 2016-01-27 | 中国石油大学(北京) | Submarine pipeline clipping-in type buckle arrestor based on fiber reinforced plastics (FRP) |
| CN104455728B (en) * | 2014-11-25 | 2016-06-29 | 天津大学 | A kind of submarine pipeline lateral displacement control method |
| CN105570535B (en) * | 2016-01-14 | 2019-06-04 | 浙江海洋学院 | A kind of submarine pipeline is anti-safely to empty mechanism |
| CN106641441A (en) * | 2017-02-23 | 2017-05-10 | 中国石油大学(北京) | Anti-corrosion buckle arrestor capable of suppressing vortex-induced vibration and resisting crushing expansion |
| CN107597989A (en) * | 2017-10-19 | 2018-01-19 | 上汽通用五菱汽车股份有限公司 | The main precompressed integral type taping machine of compact |
| WO2019077370A1 (en) * | 2017-10-20 | 2019-04-25 | Balmoral Comtec Limited | A cylindrical element profiled to reduce vortex induced vibration (viv) and/or drag |
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| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| CN101696751A (en) * | 2009-11-13 | 2010-04-21 | 天津大学 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
| CN101968139A (en) * | 2009-11-13 | 2011-02-09 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
| CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520422A (en) * | 1994-10-24 | 1996-05-28 | Ameron, Inc. | High-pressure fiber reinforced composite pipe joint |
| DE10261557B4 (en) * | 2002-12-23 | 2005-06-02 | Weinhold, Karl, Dipl.-Ing. | Coupling for steel spiral hoses |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| CN101696751A (en) * | 2009-11-13 | 2010-04-21 | 天津大学 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
| CN101968139A (en) * | 2009-11-13 | 2011-02-09 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
| CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
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