CN102720891A - 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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- CN102720891A CN102720891A CN2012102189837A CN201210218983A CN102720891A CN 102720891 A CN102720891 A CN 102720891A CN 2012102189837 A CN2012102189837 A CN 2012102189837A CN 201210218983 A CN201210218983 A CN 201210218983A CN 102720891 A CN102720891 A CN 102720891A
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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 the 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 the pipeline vortex-induced vibration.
Background technique
Submarine pipeline is that a kind of important marine oil and gas production transports mode.Because the deep water ocean environment is complicated, submarine pipeline bears huge hydrostatic pressure.In addition, the factors such as local etching that the temperature difference of conveying deep fat liquid formation and conveying liquid possibly constitute pipeline in bump, deep-water low-temperature environment and the pipe of weights whereabouts such as irrational operation in the pipe laying process, anchor all might cause the cripling conquassation of submarine pipeline.After the conquassation of pipeline generation cripling; Under the hydraulic action, the conquassation form of pipeline will be propagated along the pipe range direction, cause the whole piece pipeline destroyed outside certain; This phenomenon is exactly the buckle propagation phenomenon, and keeping the needed minimum pressure outside of pipeline buckle propagation is exactly buckle propagation pressure.Control the incidence and development of buckle propagation, external pressure is reduced to below the buckle propagation pressure, perhaps buckle propagation suffers the physical obstacle that it can't pass through.
Can effectively increase the buckle propagation critical pressure of pipeline in theory through the mode that increases pipeline wall thickness, but the increase of pipeline wall thickness can roll up material consumption and pipeline weight, has increased a large amount of costs, infeasible economically.The method of the control buckle propagation of therefore comparatively using always at present is that physical obstacle is set---buckle arrestor.The working principle of buckle arrestor is when conquassation of pipeline generation flexing and propagation, propagation is controlled between two buckle arrestors, thereby avoids the whole piece pipeline to wreck.
The citation form of buckle arrestor is a thick ring, and current buckle arrestor commonly used can be divided into the formula of buckling into, wrap style, integrated type and welding type buckle arrestor according to the difference of installation form.The formula buckle arrestor of buckling into is screwed into the pipeline specified position earlier and directly clamps then; The wrap style buckle arrestor twines at the specified position of pipeline; The internal diameter of integrated type buckle arrestor is the same with the internal diameter of pipeline, and the wall ratio pipeline is thicker, and both weld the coaxial joint that sequences afterwards again.On the basis that buckles into the formula buckle arrestor, its with pipeline between be connected and increase the twice weld seam and just formed the welding type buckle arrestor.Though integrated type buckle arrestor anti-bend best performance is higher to welding process requirement, complicacy is installed, and weight is heavier.It is simple in structure to buckle into the formula buckle arrestor; Easily manufactured; But anti-bend efficient is lower, and when pipeline buckle propagation to buckle arrestor position, because the pipeline flattening deformation will apply bigger tensile force to the buckle arrestor connecting bolt; Possibly cause accidents such as the 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, 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.
The buckle propagation of submarine pipeline and vortex-induced vibration bring enormous 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.The submarine pipeline buckle arrestor that patent of invention CN200910309743.6 (the submarine pipeline buckle arrestor and the fixation method thereof of band spiral side plate) provides; Through the firm and hard existing prevention of spiral sides and control buckle propagation and vortex-induced vibration; But this kind buckle arrestor can not prevent the generation of accidents such as bolt collapses out, fracture effectively, and the processing technology of this kind buckle arrestor is comparatively complicated.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of can effectively control the 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 installation, can prevent effectively when reducing cost that bolt from destroying the buckle arrestor that causes and losing efficacy, and the buckle propagation of control submarine pipeline also suppresses the pipeline vortex-induced vibration, realizes the unification of Economy and Security.
For realizing above-mentioned purpose, the present invention takes following technological scheme:
A kind of submarine pipeline buckle arrestor with the spiral eye plate is used to protect submarine pipeline, comprises two housings that overhanging eye plate all is 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, also be provided with and groove or the strake of eye plate with the angle spiral; After two housings connected into a circular cylinder, helical flank eye plate, groove or the strake on two housings coincide separately each other, formed 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 is close on the pipe surface; According to the identical mode consistent in eye plate position it is docked with another housing, pass eye plate through bolt then two housings are fixed on the pipeline with the helix structure sense of rotation.
The present invention is owing to take above technological scheme, and it has the following advantages:
The invention provides a kind of bolt that effectively prevents and destroy the device that the buckle arrestor that causes lost efficacy, controls the buckle propagation of submarine pipeline and suppressed the pipeline vortex-induced vibration, compare existing technology and have the following advantages:
(1) the present invention includes size two housings identical with structure, each housing all is provided with overhanging helical eye plate, uses bolt to go up the fastening of lower shell body.Because bolt and buckle arrestor are circumferentially at an angle; At submarine pipeline buckle propagation to buckle arrestor and in the process that continues to be out of shape; Buckle arrestor bolt different from the past only receives the situation of axial tension, and the power quadrature that the present invention will be applied on the bolt is decomposed into less tensile force and shearing force, has effectively prevented bolt to receive the fracture and the destruction of the bigger generation of pulling force; The integrity and the validity of buckle arrestor have been guaranteed; Thereby more effectively prevent buckle propagation, guarantee the integrity that submarine pipeline is whole, reduce submarine pipeline greatly and cause that overall structure is destroyed and the economic loss that causes by cripling.
(2) be provided with on each housing of the present invention and helical groove or the strake of eye plate with angle; When the situation of unsettled or come-up flexing appears in submarine pipeline, can apply certain disturbance and change reynolds' number to incoming flow; Make flowing state get into turbulence state in advance, reach the effect that suppresses vortex-induced vibration.
(3) this device integrates control buckle propagation and the function that prevents vortex-induced vibration, can realize the one manufacturing and the installation of two kinds of function modules.If adopt spiral strake structure, the setting of strake not only can prevent vortex-induced vibration, and has played the effect of inhomogeneous stiffening ring to rigidity, improves the anti-bend effect of whole device.
(4) two of buckle arrestor housings are identical, can be through the mould batch process of casting, and simplified manufacturing technique reduces manufacture cost.
(5) the buckle arrestor mounting process is simple, can install through production line, increases work efficiency, and reduces construction cost.
(6) this anti-bend device can be applied to the naked pipeline of putting the seabed, the cost of greatly reduce the pipeline ditching, burying underground.
Description of drawings
Fig. 1 is a side view of being furnished with certain section submarine pipeline of anti-bend device of the present invention
Fig. 2 is the A of A shown in a Fig. 1 sectional view (band groove)
Fig. 3 is the A of A shown in a Fig. 1 sectional view (band strake)
Label declaration among the figure:
1 anti-bend device case; 2 flank spiral eye plates; 3 connect clamping bolt; 4 helical grooves or strake; 5 submarine pipelines.
Embodiment
Carry out detailed description below in conjunction with accompanying drawing and embodiment to of the present invention.
As shown in Figure 1, the present invention includes two lobes and be close to the thick wall shell 1 on the submarine pipeline outer wall, every lobe housing have respectively helical flank eye plate 2 and with groove or the strake 4 of eye plate with the angle spiral, last hypovalve housing fully the symmetry.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 the 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 fix with the flank eye plate of housing one; To buckle into the formula buckle arrestor different with common bolt pinching; Because eye plate along buckle arrestor housing shape in the shape of a spiral, therefore connects clamping bolt and axial non-perpendicular to pipeline and buckle arrestor, but with pipeline and buckle arrestor circumferentially at an angle.When submarine pipeline generation flexing and when being transmitted to buckle arrestor; The pipeline that flattens imposes radial drawing power to buckle arrestor; When being delivered on the bolt at certain angle of inclination; Tensile force by quadrature be decomposed into less along bolt axis to tensile force and shearing force, guarantee the safety of bolt, thereby guarantee the integrity and the validity of anti-bend device.Eye plate and the groove or the strake acting in conjunction of spiral simultaneously applies certain disturbance and changes reynolds' number to incoming flow when the situation of unsettled or come-up flexing appears in submarine pipeline, prevents that vortex-induced vibration from taking place.The extended spiral eye plate of two-part thick wall shell flank also makes things convenient for bolt to penetrate eye plate simultaneously and is connected, and makes that the processing of anti-bend device and installation are all very easy.
Should control submarine pipeline buckle propagation and the method implementation process that suppresses vortex-induced vibration below in conjunction with description of drawings:
When (1) carrying out the production of this anti-bend device, at first distinguish the spiral annular thick wall shell 1 of adjoining edge shown in the working drawing.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 has equally distributed bolt hole, and 1/2 position of housing section semicircle is provided with eye plate and is groove or strake 4 along the buckle arrestor axial screw with angle.Because two lobe housings are identical, can use unified mould to carry out batch casting production, also can eye plate or strake and housing be welded to connect according to actual conditions.
(2) the anti-bend Unit Installation should be after the housing manufacturing be accomplished, carry out before the pipelaying work.Submarine pipeline is generally taked prefabricate, utilizes pipe laying barge etc. to 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,, docks another lobe housing with manned housing, and adopt bolt to connect fastening according to the sense of rotation of eye plate helix structure.Bolt passes eye plate two lobe housings is connected, and constitutes to be fixed on the anti-bend device on the pipeline external surface.Mounted buckle arrestor is as shown in the figure, and 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.
Claims (2)
1. the submarine pipeline buckle arrestor with the spiral eye plate is used to protect submarine pipeline, comprises two housings that overhanging eye plate all is 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, also be provided with and groove or the strake of eye plate with the angle spiral; After two housings connected into a circular cylinder, helical flank eye plate, groove or the strake on two housings coincide separately each other, formed the helix structure with angle.
2. the fixation method of the described submarine pipeline buckle arrestor of claim 1; Comprise the following steps: a housing is close on the pipe surface; According to the identical mode consistent in eye plate position it is docked with another housing, pass eye plate through bolt then two housings are fixed on the pipeline with the helix structure sense of rotation.
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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 CN102720891B (en) | 2014-07-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455728A (en) * | 2014-11-25 | 2015-03-25 | 天津大学 | Method for controlling lateral displacement of submarine pipeline |
| 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) |
| CN105570535A (en) * | 2016-01-14 | 2016-05-11 | 浙江海洋学院 | Safety tunneling-preventing mechanism for submarine pipeline |
| 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 |
| CN111433429A (en) * | 2017-10-20 | 2020-07-17 | 巴尔莫勒尔卡姆丹克有限公司 | Cylindrical element formed to reduce Vortex Induced Vibration (VIV) and/or drag |
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| 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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| WO1996012911A1 (en) * | 1994-10-24 | 1996-05-02 | Ameron International Corporation | High-pressure fiber reinforced composite pipe joint |
| US20060130287A1 (en) * | 2002-12-23 | 2006-06-22 | Karl Weinhold | Coupling for a steel spiral flexible hose |
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Cited By (8)
| 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) |
| 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 |
| CN105570535A (en) * | 2016-01-14 | 2016-05-11 | 浙江海洋学院 | Safety tunneling-preventing mechanism for submarine pipeline |
| 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 |
| CN111433429A (en) * | 2017-10-20 | 2020-07-17 | 巴尔莫勒尔卡姆丹克有限公司 | Cylindrical element formed to reduce Vortex Induced Vibration (VIV) and/or drag |
| CN111433429B (en) * | 2017-10-20 | 2022-06-14 | 巴尔莫勒尔卡姆丹克有限公司 | Cylindrical element formed to reduce Vortex Induced Vibration (VIV) and/or drag |
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