CN102121356B - Helical strake vortex induced vibration inhibiting device - Google Patents
Helical strake vortex induced vibration inhibiting device Download PDFInfo
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- CN102121356B CN102121356B CN 201110005186 CN201110005186A CN102121356B CN 102121356 B CN102121356 B CN 102121356B CN 201110005186 CN201110005186 CN 201110005186 CN 201110005186 A CN201110005186 A CN 201110005186A CN 102121356 B CN102121356 B CN 102121356B
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- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The invention relates to a helical strake vortex induced vibration inhibiting device. The device is characterized by comprising a plurality of strip strakes, a plurality of chucks and a ligature, wherein the strakes are alternately arranged on the outer wall of a marine riser, and are helically arranged along the axial direction of the marine riser; the chucks are alternately fixed on the marine riser, and a plurality of grooves are formed on each chuck; and each strake is arranged in the groove of the chuck corresponding, and is fastened in the chuck through the ligature. The device has a simple structure, and the strakes can adopt a continuous structure to facilitate marine on-site assembly, thus the efficiency of marine on-site assembly is remarkably improved, and the device has remarkable economic benefits, and can be applied to the marine riser widely.
Description
Technical field
The present invention relates to the marine riser technical field, particularly about a kind of helical strake vortex induced vibration inhibiting device that can the establishment vortex-induced vibration of marine riser.
Background technology
Marine riser is the main connector between ocean platform and subsea wellheads, the marine environment load that marine riser bears mainly contains wind, wave, stream, ice and seismic load etc., wherein, wave and ocean current are most important ocean loads, and be subjected to the engineering structures of flow action all might produce vortex-induced vibration, any have enough the engineering structures of a precipitous trailing edge whirlpool that all can come off in the Reynolds number of certain limit, make structure in the vibration of the direction generating period vertical with current.Therefore, when wave and ocean current are flowed through standpipe, under certain flow conditions, can alternately form strong vortex in the marine riser both sides, Vortex Shedding can produce one-period ground variable force to marine riser so that marine riser with flow to vertical direction oscillation crosswise occur; The vibration of structure conversely again stream field exert an influence, vortex is strengthened, resistance increment, this vortex-induced vibration are the imbodies of the solid coupling phenomenon of small scale parts stream.Except oscillation crosswise, fluid resistance can make marine riser streamwise generation extensional vibration, but in the ordinary course of things, extensional vibration is than the approximately little order of magnitude of oscillation crosswise amplitude, and frequency approximately is its twice.When Vortex Shedding frequency and standpipe intrinsic frequency near the time, to cause the judder of marine riser, the process of coming off of vortex will be controlled by the vibration of structure, thereby make the disengaging of vortex and the vibration of pipeline have identical frequency, and " locking " (lock-in) phenomenon occurs.The Lock-in phenomenon produces to produce marine riser at once and destroys, but can aggravate the fatigue failure of marine riser.In recent decades, the oil gas field that causes because of the off-shore pipeline system destruction both at home and abroad stops production, the event of marine site pollution in wide area has reached hundreds of, has not only brought huge economic loss, and has destroyed the marine eco-environment.
For reducing and preventing the destruction that vortex-induced vibration causes, prolong the application life of marine riser, usually at marine riser vortex-induced vibration suppression device is installed, i.e. shape by direct change marine riser surface or increase extra device changing the flow field, thereby the formation and development of subduing vortex.The vortex-induced vibration of marine riser restraining device mainly contains spiral strake (Helical Strakes), commutator segment (Fairings) and fork row's floating block (Staggered Buoyancy) etc.Wherein the vortex-induced vibration inhibition of spiral strake is better, has obtained studying widely and using at present.
The spiral strake vibration-repressing device that uses at present structurally mainly comprises: cylindrical housings and three spiral strakes.Because cylindrical housings and spiral strake are integral types, so the mould that its moulding needs is very complicated, manufacture difficulty is large, and is with high costs.On the other hand, cylindrical housings has increased the hydrodynamic diameter of standpipe, has weakened its inhibition of vibration.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind ofly be convenient to make, cost is lower, helical strake vortex induced vibration inhibiting device that can the establishment vortex-induced vibration of marine riser.
For achieving the above object, the present invention takes following technical scheme: a kind of helical strake vortex induced vibration inhibiting device is characterized in that: it comprises some bar shaped strakes, some chucks and bandage; Each described strake is disposed on the outer wall of marine riser, and along the axial screw setting of described marine riser; Each described chuck interval is fixed on the described marine riser, is provided with some grooves on each described chuck, and each described strake correspondence is arranged in the described groove of described chuck, and passes through described bandage fastening in described chuck.
Spacing between the adjacent described chuck is 1/3rd helical pitch of described strake.
Each described chuck includes upper clamp slice and lower card, and described upper clamp slice and described lower card be by the pin pin joint, described chuck by bolton on described marine riser.
The cross sectional shape of described strake is a kind of in rectangle, trapezoidal, triangle and the semicircle, and the height of described strake is 0.25 times of described marine riser diameter.
The quantity of described strake is three, and between adjacent described chuck, three described strake rotating Vortexes 120 degree turn to a kind of in left-hand and the dextrad.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is owing to being arranged at intervals with some strakes at marine riser, the independent moulding of each strake, and cylindrical shell is not set, therefore, significantly reduced the complex structure degree of moulding form, simplified manufacturing process, improve production efficiency, significantly reduced manufacturing cost, weakened the dependence to equipment.2, the present invention is fixed on strake on the marine riser by chuck and bandage, material usage is compared and is had restraining device now and reduced by 50% to 70%, material and cost of transportation have significantly been saved, reduced the marine riser hydrodynamic diameter, reduce the marine riser Oscillation Amplitude, improved marine riser fatigue life.3, the present invention is simple in structure, and strake can adopt continuous structure, is convenient to marine on-the-spot the installation, has significantly improved marine field erected efficient, has significant economic benefit, therefore, can extensively adopt at marine riser.
Description of drawings
Fig. 1 is that the present invention assembles schematic diagram
Fig. 2 is axial schematic diagram of the present invention
Fig. 3 is chuck structure schematic diagram of the present invention
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1 and Figure 2, the present invention includes some bar shaped strakes 1, some chucks 2 and bandage 3.Each strake 1 is disposed on the outer wall of marine riser 4, and the axial screw setting of coastal foreign standpipe 4.
Each chuck 2 interval is fixed on the marine riser 4, and the spacing between the adjacent chuck 2 is 1/3rd helical pitch of strake 1.Be provided with some grooves on each chuck 2, each strake 1 correspondence is arranged in the groove of chuck 2, and is fastened in the chuck 1 by bandage 3.
In above-described embodiment, as shown in Figure 3, each chuck 2 includes upper clamp slice 21 and lower card 22, and upper clamp slice 21 is in the same place by pin 23 pin joints with lower card 22, and chuck 2 is fastened on the marine riser 4 by bolt 24.
In above-described embodiment, the cross sectional shape of strake 1 can be rectangle, trapezoidal, triangle, semicircle etc., and the height of strake is 0.25 times of marine riser diameter.
In above-described embodiment, the quantity of strake 1 is three, and between adjacent chuck 2, three strake 1 rotating Vortex 120 degree turn to be left-hand or dextrad.
In above-described embodiment, bandage 3 preferred nonmetal bands.
The various embodiments described above only are used for explanation the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents and improvement of carrying out on the basis of technical solution of the present invention all should do not got rid of outside protection scope of the present invention.
Claims (7)
1. helical strake vortex induced vibration inhibiting device, it is characterized in that: it comprises some bar shaped strakes, some chucks and bandage; Each described strake is disposed on the outer wall of marine riser, and along the axial screw setting of described marine riser; Each described chuck interval is fixed on the described marine riser, is provided with some grooves on each described chuck, and each described strake correspondence is arranged in the described groove of described chuck, and passes through described bandage fastening in described chuck.
2. a kind of helical strake vortex induced vibration inhibiting device as claimed in claim 1, it is characterized in that: the spacing between the adjacent described chuck is 1/3rd helical pitch of described strake.
3. a kind of helical strake vortex induced vibration inhibiting device as claimed in claim 1, it is characterized in that: each described chuck includes upper clamp slice and lower card, described upper clamp slice and described lower card be by the pin pin joint, described chuck by bolton on described marine riser.
4. a kind of helical strake vortex induced vibration inhibiting device as claimed in claim 2, it is characterized in that: each described chuck includes upper clamp slice and lower card, described upper clamp slice and described lower card be by the pin pin joint, described chuck by bolton on described marine riser.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of helical strake vortex induced vibration inhibiting device, it is characterized in that: the cross sectional shape of described strake is a kind of in rectangle, trapezoidal, triangle and the semicircle, and the height of described strake is 0.25 times of described marine riser diameter.
6. as claimed in claim 1 or 2 or 3 or 4 a kind of helical strake vortex induced vibration inhibiting device, it is characterized in that: the quantity of described strake is three, between adjacent described chuck, three described strake rotating Vortexes 120 degree turn to a kind of in left-hand and the dextrad.
7. a kind of helical strake vortex induced vibration inhibiting device as claimed in claim 5, it is characterized in that: the quantity of described strake is three, between adjacent described chuck, three described strake rotating Vortexes 120 degree turn to a kind of in left-hand and the dextrad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005186 CN102121356B (en) | 2011-01-12 | 2011-01-12 | Helical strake vortex induced vibration inhibiting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110005186 CN102121356B (en) | 2011-01-12 | 2011-01-12 | Helical strake vortex induced vibration inhibiting device |
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| Publication Number | Publication Date |
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| CN102121356A CN102121356A (en) | 2011-07-13 |
| CN102121356B true CN102121356B (en) | 2013-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110005186 Active CN102121356B (en) | 2011-01-12 | 2011-01-12 | Helical strake vortex induced vibration inhibiting device |
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| CN (1) | CN102121356B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485732A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352947A (en) * | 2011-09-09 | 2012-02-15 | 河北工程大学 | Method for suppressing vortex-induced vibration of marine oil pipeline |
| 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 |
| CN102966313A (en) * | 2012-11-16 | 2013-03-13 | 西南石油大学 | Marine riser ocean flow response surface additional layer |
| CN104791576A (en) * | 2015-04-20 | 2015-07-22 | 中国海洋石油总公司 | Deepwater oil gas crossover pipe |
| NL2018382B1 (en) * | 2017-02-16 | 2018-09-06 | Tp Europoort Holding B V | Vortex-reducing device and method |
| CN106958426B (en) * | 2017-03-03 | 2018-04-20 | 中国石油大学(华东) | Assembling rotary blade revolves vortex-induced vibration of marine riser restraining device and method |
| CN107476930A (en) * | 2017-07-28 | 2017-12-15 | 武汉理工大学 | A kind of twin float, damping riser wave energy generating set |
| CN107339200A (en) * | 2017-08-23 | 2017-11-10 | 华侨大学 | Stainless steel concrete composite pillar for marine environment |
| CN109737012B (en) * | 2019-02-22 | 2025-02-28 | 上海电气风电集团股份有限公司 | Spoiler, wind turbine tower and wind turbine generator including the same |
| 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 |
| US11585321B2 (en) | 2020-10-28 | 2023-02-21 | General Electric Company | Method and system for attaching vortex suppression devices to a wind turbine tower |
| CN115432117B (en) * | 2022-09-19 | 2024-11-26 | 中国船舶重工集团公司第七一五研究所 | Vortex-induced vibration suppression device and method for armored cable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2335248B (en) * | 1998-03-07 | 2002-12-31 | Crp Group Ltd | Protection of underwater elongate members |
| EG21949A (en) * | 1999-04-08 | 2000-04-30 | Shell Int Research | System for reducing vortex induced vibration of a marine element |
| US6896447B1 (en) * | 2000-11-14 | 2005-05-24 | Weldon Taquino | Vortex induced vibration suppression device and method |
| US7845299B2 (en) * | 2007-03-30 | 2010-12-07 | Viv Suppression, Inc. | Compliant banding system |
| CN202000925U (en) * | 2011-01-12 | 2011-10-05 | 中国海洋石油总公司 | Vortex-induced vibration abatement device for helical strake |
-
2011
- 2011-01-12 CN CN 201110005186 patent/CN102121356B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485732A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
| CN103485732B (en) * | 2013-10-15 | 2016-04-06 | 西南石油大学 | A kind of helical strake vortex induced vibration inhibiting device with rotating vane and method |
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| CN102121356A (en) | 2011-07-13 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC Research Institute Patentee after: Shanghai Lice Technology Co.,Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC RESEARCH CENTER Patentee before: Shanghai Lice Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: Shanghai Lice Technology Co.,Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: Shanghai Lice Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: RICHTECH INTERNATIONAL ENGINEERING (SHANGHAI) Co.,Ltd. Address before: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: Shanghai Lice Technology Co.,Ltd. |
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Effective date of registration: 20210816 Address after: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Address before: 100010 No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: RICHTECH INTERNATIONAL ENGINEERING (SHANGHAI) Co.,Ltd. |