CN102226379B - Sleeve for marine riser - Google Patents
Sleeve for marine riser Download PDFInfo
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- CN102226379B CN102226379B CN 201110165370 CN201110165370A CN102226379B CN 102226379 B CN102226379 B CN 102226379B CN 201110165370 CN201110165370 CN 201110165370 CN 201110165370 A CN201110165370 A CN 201110165370A CN 102226379 B CN102226379 B CN 102226379B
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- marine riser
- sleeve
- housing
- external diameter
- housings
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Abstract
The invention belongs to the technical field of laying of marine risers and relates to a sleeve for a marine riser. When in use, the sleeve for the marine riser is fixedly connected outside the marine riser, the sleeve for the marine riser comprises a pair of semi-circular ring-shaped shells which are manufactured according to the outer diameter of the marine riser and have the same size, spiral strakes and spiral grooves are arranged on the outer surfaces of the two semi-circular ring-shaped shells in a staggered manner, when the two shells are combined into an annular column, the spiral strakes or grooves distributed on the outer surfaces of the two shells are combined into a spiral structure. By adopting the sleeve for the marine riser, the cost can be reduced, 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 sleeve for marine riser.
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 device that can effectively suppress the marine riser vortex-induced vibration is provided, the device that the present invention proposes has simple in structure, be easy to the characteristics of processing and installing, can effectively control the vortex-induced vibration of marine riser, realize the unification of economy and safety.
For this reason, the present invention adopts following technical scheme:
A kind of sleeve for marine riser, during use, fixedly be docked at the outside of marine riser, comprise a pair of measure-alike semi-round ring shape housing of making according to the marine riser external diameter, external surface interlaced arrangement spiral strake and helical groove at two housings, two housings are 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.
As preferred embodiment, described sleeve for marine riser, the height of spiral strake are 0.15-0.2 housing external diameter doubly, and 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 device that can suppress 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, makes flow regime enter turbulence state in advance, reaches 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 (3)
1. sleeve that is used for marine riser, during use, fixedly be docked at the outside of marine riser, comprise a pair of measure-alike semi-round ring shape housing of making according to the marine riser external diameter, adopt the streamline precasting process, produce in batches by mould, external surface interlaced arrangement spiral strake and helical groove at two housings, two housings are 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, and two lobe housings are fixed by 6 bolts, and bolt passes eye plate two lobe housings are 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. the sleeve for marine riser 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 sleeve for marine riser 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110165370 CN102226379B (en) | 2011-06-20 | 2011-06-20 | Sleeve for marine riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110165370 CN102226379B (en) | 2011-06-20 | 2011-06-20 | Sleeve for marine riser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226379A CN102226379A (en) | 2011-10-26 |
| CN102226379B true CN102226379B (en) | 2013-10-09 |
Family
ID=44807373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110165370 Expired - Fee Related CN102226379B (en) | 2011-06-20 | 2011-06-20 | Sleeve for marine riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102226379B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990680A (en) * | 2015-07-09 | 2015-10-21 | 天津大学 | Pipeline model of experiment for suppressing vortex-induced vibration of marine riser and manufacturing method thereof |
| CN104985556B (en) * | 2015-07-09 | 2017-04-26 | 天津大学 | Installation tool for helical strakes in marine riser vortex-induced vibration restraining test |
| CN107355045A (en) * | 2017-08-23 | 2017-11-17 | 华侨大学 | Basalt fiber concrete composite pillar for marine environment |
| CN107461302B (en) * | 2017-09-11 | 2018-10-02 | 北京金风科创风电设备有限公司 | Envelope structure with external surface having function of inhibiting vortex excitation vibration |
| JP2019090504A (en) * | 2017-11-16 | 2019-06-13 | 宇部樹脂加工株式会社 | Protective cover |
| CN108919710A (en) * | 2018-07-11 | 2018-11-30 | 湘潭大学 | Rotational shell active control system based on the application of ocean energy collection device |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019549A (en) * | 1996-06-11 | 2000-02-01 | Corrosion Control International Llc | Vortex shedding strake wraps for submerged pilings and pipes |
| GB0112164D0 (en) * | 2001-05-18 | 2001-07-11 | Crp Group Ltd | Protection of underwater elongate members |
| US7467912B2 (en) * | 2004-09-30 | 2008-12-23 | Technip France | Extendable draft platform with buoyancy column strakes |
| US8443896B2 (en) * | 2009-06-04 | 2013-05-21 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
| CN101968139B (en) * | 2009-11-13 | 2012-02-29 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
| CN101928376B (en) * | 2010-08-27 | 2013-06-19 | 中国海洋石油总公司 | Polyurethane elastomer composition and preparation method thereof |
| CN102003152B (en) * | 2010-10-20 | 2013-03-20 | 哈尔滨工程大学 | Lip type reversing coupling double-spiral blade type vortex induced vibration restraining device for deep sea vertical pipe |
-
2011
- 2011-06-20 CN CN 201110165370 patent/CN102226379B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102226379A (en) | 2011-10-26 |
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| ASS | Succession or assignment of patent right |
Owner name: TIANJIN UNIVERSITY Effective date: 20130827 Owner name: HEBEI UNIVERSITY OF ENGINEERING Free format text: FORMER OWNER: TIANJIN UNIVERSITY Effective date: 20130827 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Yancang Inventor after: Du Zunfeng Inventor after: Liang Jing Inventor after: Zhang Guizhen Inventor after: Liu Xiaoyan Inventor before: Du Zunfeng Inventor before: Liang Jing Inventor before: Zhang Guizhen Inventor before: Liu Xiaoyan |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DU ZUNFENG LIANG JING ZHANG GUIZHEN LIU XIAOYAN TO: LI YANCANG DU ZUNFENG LIANG JING ZHANG GUIZHEN LIU XIAOYAN Free format text: CORRECT: ADDRESS; FROM: 300072 NANKAI, TIANJIN TO: 056038 HANDAN, HEBEI PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20130827 Address after: 056038 Guangming South Street, Hebei, Handan, No. 199 Applicant after: Hebei University of Engineering Applicant after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Applicant before: Tianjin University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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