CN102226380B - Method for inhibiting vortex-induced vibration of marine riser - Google Patents
Method for inhibiting vortex-induced vibration of marine riser Download PDFInfo
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- CN102226380B CN102226380B CN 201110165670 CN201110165670A CN102226380B CN 102226380 B CN102226380 B CN 102226380B CN 201110165670 CN201110165670 CN 201110165670 CN 201110165670 A CN201110165670 A CN 201110165670A CN 102226380 B CN102226380 B CN 102226380B
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- marine riser
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Abstract
The invention belongs to the technical field of laying of marine risers and relates to a method for inhibiting vortex-induced vibration of a marine riser. The method comprises the following steps: (1) manufacturing a plurality of pairs of semi-circular ring-shaped shells of the same size according to the size of the outer diameter of the marine riser, wherein spiral strakes and spiral grooves are arranged on the outer surface of each shell in a staggered manner, when each pair of shells are combined into an annular column, and the spiral strakes or the grooves distributed on the outer surfaces of the two shells are combined into a spiral structure; and (2) fixedly mounting one pair of shells in the radial direction of the marine riser at intervals, wherein the two shells are closely jointed on the surface of a pipeline, a sleeve is formed in a way of combining the spiral strakes or the grooves on the outer surfaces of the two shells into the spiral structure, and the sleeve is fixedly connected to the marine riser. By adopting the method, the vortex-induced vibration of the marine riser can be effectively controlled, and the unification of economy and safety can be realized.
Description
Technical field
The invention belongs to marine riser laying technology field, be specifically related to a kind of method that can suppress the marine riser vortex-induced vibration.
Background technology
Marine riser at sea lay with manufacturing process in, under the long term of environmental loads such as ocean current, interior ripple, vortex-induced vibration takes place and fatigue failure easily, cause serious consequences such as facility destruction even stopping production, exploitation to offshore oil and natural gas brings enormous economic loss, suppresses vortex-induced vibration and has great importance for the marine riser engineering.
In decades, people have proposed the braking measure of a variety of forms, and obtained widely using in ocean engineering circle, comprising: protrusion of surface type (screw thread, lines, fin etc.), wrap type (perforation, silk screen, control lever and axially lath etc.) and near wakes stabilizer (ribbon, radome fairing, demarcation strip, guide vane, the end arrange and slit etc.).Thereby basic principle all is by reducing flow separation, reducing surperficial pressure difference inhibition vortex-induced vibration.Yet most braking measures simple in structure have the one-way feature, baroque omni-directional braking measure better performances, but manufacture and design with installation cost higherly, and and tend to cause the increase of being responsible for drag force, also there are problems such as dynamic instability.
Summary of the invention
The objective of the invention is to overcome the deficiency on the prior art, a kind of method that can effectively suppress the marine riser vortex-induced vibration is provided.The present invention has taked proper construction technology, can reduce cost, and effectively controls the vortex-induced vibration of marine riser, realizes the unification of economy and safety.
For this reason, the present invention adopts following technical scheme:
A kind of method that suppresses the marine riser vortex-induced vibration comprises the following steps:
(1) according to the size of marine riser external diameter, make many to measure-alike semi-round ring shape housing, external surface interlaced arrangement spiral strake and helical groove at each housing, every pair of housing is when synthesizing a circular cylinder, and the spiral strake or mutual the coincideing of groove difference that are distributed in two housing outer surface form helical structure;
(2) directly make progress every a segment distance at marine riser, the fixed installation pair of shells: two housings are close on the pipe surface, constitute a sleeve according to the spiral strake of two housing outer surface or the groove mode that forms helical structure of coincideing mutually respectively, be fixedly connected on the marine riser.
As preferred embodiment, the method for described inhibition marine riser vortex-induced vibration, the height of spiral strake is 0.15-0.2 housing external diameter doubly, pitch is 15-17 housing external diameter doubly; The degree of depth of helical groove is 0.15-0.2 housing external diameter doubly, and pitch is 15-17 housing external diameter doubly; Be provided with eye plate on each housing, every pair of housing docks mutually by eye plate; Two housings that constitute sleeve can be made by iron and steel, alloy or polyester material.
The invention provides a kind of method that suppresses the marine riser vortex-induced vibration, have the following advantages for existing technology: (1) the present invention is provided with the combining form of spiral strake and helical groove, can apply certain disturbance and change Reynolds number to incoming flow, make flow regime enter turbulence state in advance, reach the effect that suppresses vortex-induced vibration.(2) housing of sleeve can be produced in batches by mould, and simplified manufacturing technique reduces manufacturing cost.(3) mounting process is simple, can install by streamline, increases work efficiency, and reduces construction cost.
Description of drawings
Fig. 1 is the elevation that assembles certain section marine riser of the sleeve that has helical structure;
Fig. 2 is the A-A sectional drawing of Fig. 1 middle sleeve.
The number in the figure explanation:
1 sleeve; 2 right shell bodies; 3 left shells; 4 eye plates; 5 bolts; 6 marine risers; 7 spiral strakes; 8 helical grooves
The specific embodiment
The present invention suppresses the marine riser vortex-induced vibration by the method for mounting strap helical structure sleeve at a certain distance on marine riser.Key step is as follows:
(1) according to the outside dimension that will protect marine riser, make the measure-alike semi-round ring shape housing of two lobes, can produce in batches by mould.
(2) the first lobe housing is close to a side of pipe surface, by the direction of rotation of eye plate position and helical structure, another lobe housing is docked with manned housing.
(3) two lobe housings are fixed by 6 bolts.Bolt passes eye plate two lobe housings is connected, and constitutes the sleeve that is fixed on the pipeline external surface.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Assemble the elevation of certain section marine riser of the sleeve that has helical structure, as shown in Figure 1.Marine riser eddy suppressor involved in the present invention, namely sleeve 1, is to be connected by bolt 5 by two lobe semi-round ring shape housings (right shell body 2 and left shell 3) closely to be fixed on marine riser 6 surfaces.Left and right sides shell dimension is identical, adopts the streamline precasting process, and material can be selected iron and steel, alloy or polyester material for use.
Two lobe housings all are provided with overhanging eye plate 4, and bolt 5 passes eye plate 4 and connects right shell body 2 and left shell 3, constitutes sleeve 1; Surface of shell has spiral strake 7 and helical groove 8, plays the upset incoming flow, suppresses the effect of pipeline 6 vortex-induced vibrations.As preferred embodiment, the number of spiral strake is 2 on the sleeve, the number of helical groove is 1, strake height and depth of groove are 0.15-0.2 housing external diameter doubly, pitch is 15-17 housing external diameter doubly, and the cross sectional shape of spiral strake and groove can be triangle, rectangle, semicircle or trapezoidal.
The detailed process of this eddy suppressor being installed at marine riser 6 is: earlier right shell body 2 is close on pipeline 6 surfaces, dock with left shell 3 by the position of eye plate 4 and the direction of rotation of helical structure, passing eye plate 4 by six bolts 5 then is fixed on sleeve 1 on the pipeline 6, as shown in Figure 1.
Fig. 2 is the A-A sectional drawing of Fig. 1 middle sleeve 1, and it has shown the type of attachment of sleeve left and right sides housing, and the circumferential arrangement of helical structure and cross sectional shape.
Claims (4)
1. a method that suppresses the marine riser vortex-induced vibration comprises the following steps:
(1) according to the size of marine riser external diameter, make the measure-alike semi-round ring shape housing of two lobes, adopt the streamline precasting process, produce in batches by mould, external surface interlaced arrangement spiral strake and helical groove at each housing, every pair of housing is when synthesizing a circular cylinder, the first lobe housing is close to a side of pipe surface, direction of rotation by eye plate position and helical structure, another lobe housing is docked with manned housing, two lobe housings are fixed by 6 bolts, bolt passes eye plate two lobe housings is connected, constitute the sleeve that is fixed on the pipeline external surface, the spiral strake or mutual the coincideing of groove difference that are distributed in two housing outer surface form helical structure;
(2) directly make progress every a segment distance at marine riser, the fixed installation pair of shells, two housings are close on the pipe surface, constitute a sleeve according to the spiral strake of two housing outer surface or the groove mode that forms helical structure of coincideing mutually respectively, are fixedly connected on the marine riser.
2. the method for inhibition marine riser vortex-induced vibration according to claim 1 is characterized in that, the height of spiral strake is 0.15-0.2 housing external diameter doubly, and pitch is 15-17 housing external diameter doubly.
3. the method for inhibition marine riser vortex-induced vibration according to claim 1 is characterized in that, the degree of depth of helical groove is 0.15-0.2 housing external diameter doubly, and pitch is 15-17 housing external diameter doubly.
4. the method for inhibition marine riser vortex-induced vibration according to claim 1 is characterized in that, two housings that constitute sleeve are made by iron and steel, alloy or polyester material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110165670 CN102226380B (en) | 2011-06-20 | 2011-06-20 | Method for inhibiting vortex-induced vibration of marine riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110165670 CN102226380B (en) | 2011-06-20 | 2011-06-20 | Method for inhibiting vortex-induced vibration of marine riser |
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| Publication Number | Publication Date |
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| CN102226380A CN102226380A (en) | 2011-10-26 |
| CN102226380B true CN102226380B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110165670 Expired - Fee Related CN102226380B (en) | 2011-06-20 | 2011-06-20 | Method for inhibiting vortex-induced vibration of marine riser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952934A (en) * | 2019-12-03 | 2020-04-03 | 天津大学 | Arrangement method of vibration suppression device for variable-spacing marine riser |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644446A (en) * | 2012-04-27 | 2012-08-22 | 宝鸡石油机械有限责任公司 | Device and method for suppressing vortex-induced vibration of marine vertical pipes and pipelines |
| CN102967429B (en) * | 2012-11-06 | 2015-07-08 | 上海交通大学 | Device for simulating bidirectional self-oscillation under mutual interference of two stand column models under uniform flow |
| CN105890857A (en) * | 2016-04-28 | 2016-08-24 | 天津大学 | Marine riser vortex-induced vibration control lever restraint system |
| CN106285511B (en) * | 2016-09-27 | 2018-05-22 | 西南石油大学 | A kind of compound disturbance formula standpipe vortex-induced vibration suppression device and method |
| CN110541677B (en) * | 2019-08-13 | 2021-11-30 | 中国石油大学(华东) | Device, marine riser and method for inhibiting vortex-induced vibration |
| CN112443189A (en) * | 2019-09-05 | 2021-03-05 | 国网内蒙古东部电力有限公司 | Breeze vibration suppression device for power transmission tower |
| CN111098978B (en) * | 2019-12-04 | 2021-05-14 | 中国船舶重工集团公司第七一五研究所 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
| CN111720068B (en) * | 2020-07-15 | 2022-03-15 | 大连理工大学 | Net-shaped flexible vertical pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101963257A (en) * | 2010-09-30 | 2011-02-02 | 天津大学 | Method for fixing seabed pipeline and preventing buckle propagation |
| CN101968139A (en) * | 2009-11-13 | 2011-02-09 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0112164D0 (en) * | 2001-05-18 | 2001-07-11 | Crp Group Ltd | Protection of underwater elongate members |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101963257A (en) * | 2010-09-30 | 2011-02-02 | 天津大学 | Method for fixing seabed pipeline and preventing buckle propagation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952934A (en) * | 2019-12-03 | 2020-04-03 | 天津大学 | Arrangement method of vibration suppression device for variable-spacing marine riser |
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| CN102226380A (en) | 2011-10-26 |
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