CN106014275A - Novel vortex-induced vibration resisting bionic riser - Google Patents
Novel vortex-induced vibration resisting bionic riser Download PDFInfo
- Publication number
- CN106014275A CN106014275A CN201610532847.3A CN201610532847A CN106014275A CN 106014275 A CN106014275 A CN 106014275A CN 201610532847 A CN201610532847 A CN 201610532847A CN 106014275 A CN106014275 A CN 106014275A
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- Prior art keywords
- vortex
- riser
- induced vibration
- standpipe
- bionical
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- 239000011664 nicotinic acid Substances 0.000 title abstract 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000003313 weakening effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 5
- 230000010349 pulsation Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/01—Risers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention provides a novel vortex-induced vibration resisting bionic riser. A cross section of the bionic riser is in a periodically-cusped wave shape, i.e., the section shape of the bionic riser is changed on the basis of a cylindrical riser; a convex structure is added on the radial edge surface of a transverse section of the bionic riser, i.e., the surface of the bionic riser consists of convex structures which are axially parallel and are uniformly distributed in the circumferential direction. The convex structures act in a boundary layer formed by a cylindrical surface of the riser, intervene the formation of vortex and reduce the vorticity strength of the vortex, thereby influencing the effect of an entrainment layer, weakening the falling of the vortex and effectively inhibiting vortex-induced vibration generated by the riser. The novel vortex-induced vibration resisting bionic riser provided by the invention is simple in designed structure and lower in cost; in addition, the vortex-induced vibration of the riser can be effectively inhibited, and the unity of the safety and the economy is realized.
Description
Technical field
The present invention relates to a kind of vertical tube structure, particularly relate to a kind of novel bionical standpipe of anti-vortex-induced vibration, belong to setting of marine riser
Meter field.
Background technology
Standpipe, as the key components of ocean infrastructure, is requisite equipment in offshore oil gas exploitation course.
Along with continually developing of the resources such as deep-sea oil natural gas, people have had one to the marine riser dynamic response under complicated sea situation
The understanding of step.In recent years, the vortex-induced vibration effect reducing marine riser is always the study hotspot of lot of domestic and foreign scholar.
The vortex-induced vibration braking measure having pointed out in decades is broadly divided into two types: actively control and passive control.Actively control
System is by actively changing the flow field near marine riser and vertical tube structure stress plays the purpose of suppression Vortex Shedding；But actively
Control is relatively costly, operation complexity.Passive control is i.e. directly to change the device outside the shape of body structure surface or plus to change
Become Flow Field, thus control vortex formation and development, suppress vortex shedding；It is widely used in ocean engineering circle,
Including: rat type, wrap type and near wakes regulator.But the direction tool that the braking measure of majority simple in construction is to flowing
There is sensitivity；Complicated omni-directional braking measure design and installation is relatively costly and there is instability problem.Therefore, for development more
Have premium properties presses down vibration means, in addition it is also necessary to a lot of innovative researches.
Summary of the invention
The invention aims to improve pressing down of marine riser shake performance and used life and provide a kind of novel anti-vortex-induced vibration to imitate
Raw standpipe.
The object of the present invention is achieved like this: the cross section of bionical standpipe is the wavy of cycle convex type.Present invention additionally comprises
So some architectural features:
1. wavy total 8-13 the cycle of cycle convex type described in, and be uniformly arranged along the circumference of bionical standpipe.
2. the minimum outer diameter of bionical standpipe described in and the ratio of maximum outside diameter are not less than 2:3.
3. wavy each cycle of cycle convex type is all to be formed with straight line bridge joint by elliptic arc.
4. wavy each cycle of cycle convex type is all to be formed with the semi arch bridge joint concaved by cambered outwards semi arch.
5. wavy each cycle of cycle convex type is all to be formed with straight line bridge joint by flute profile contour line.
Compared with prior art, the invention has the beneficial effects as follows: the present invention changes the cylindrical shape of Conventional marine standpipe, it is horizontal
Adding bulge-structure to cross section in radial edge surface, cross section is wavy, and projection is uniformly distributed along damaged surface circumference, axle
Act on the shear layer of damaged surface to bulge-structure, in vortex forms the transmittance process at initial stage, play reduction vortex vorticity intensity,
Then weaken volume and inhale the effect of layer, reach the purpose suppressing marine riser to produce vortex-induced vibration.The most uniformly divide additionally, use
The mode of cloth, so that this structure has omni-directional, does not have sensitivity to the direction flowed, and inhibition of vibration is stable, improves
Marine riser press down the performance and used life that shakes.The present invention designs simple in construction, and cost is relatively low, and can effectively suppress vertical
The vortex-induced vibration of pipe, it is achieved that safety and the unification of economy.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are the front view of the present invention, left view and top view respectively；
Fig. 3 is the protruding bionical standpipe transverse cross-sectional profile schematic diagram of ellipse of the present invention；
Fig. 4 is the semi-circular projection bionical standpipe transverse cross-sectional profile schematic diagram of the present invention；
Fig. 5 is the gear boss bionical standpipe transverse cross-sectional profile schematic diagram of the present invention；
Fig. 6 be typical circular sectional cylinder stream schematic diagram of mechanism；
Fig. 7 be the bionical standpipe of the present invention stream schematic diagram of mechanism.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment one: combine Fig. 1 and Fig. 2, the cross section of bionical standpipe is the wavy of cycle convex type, namely the present invention is
Changing its cross sectional shape on the basis of cylindrical standpipe, its lateral cross section adds bulge-structure in radial edge surface, it is possible to say
Be surface be with axially in parallel and constitute at circumferential equally distributed bulge-structure by some.Bulge-structure acts on steady pipe body surface
In the boundary region that face is formed, the formation of interference vortex, reduce the vorticity intensity of vortex, thus affect volume and inhale the declines of layer
Coming off of whirlpool, the vortex-induced vibration that effective suppression standpipe produces；
Further, wavy total 8-13 the cycle of described cycle convex type, and be uniformly arranged along the circumference of bionical standpipe.
Further, the described minimum outer diameter of bionical standpipe and the ratio of maximum outside diameter are not less than 2:3, it is also possible to be outside bulge-structure
Convex radical length is less than 1:3 with the ratio maximum of bionical cylinder lateral cross section maximum outside diameter.
Further, bulge-structure can be the distribution of intermittent cyclical type at axial direction
Embodiment two: based on implementing to combine Fig. 3 in the lump, wavy each cycle of cycle convex type is all with straight by elliptic arc
Line bridge joint forms.
Embodiment three: based on implementing to combine Fig. 4 in the lump, wavy each cycle of cycle convex type is all by cambered outwards half
Circular arc forms with the semi arch bridge joint concaved.
Embodiment four: based on implementing to combine Fig. 5 in the lump, wavy each cycle of cycle convex type is all by flute profile contour line
Form with straight line bridge joint.
Embodiment two, three, four illustrates that the wavy cross sectional shape that bulge-structure of the present invention is constituted has multiple, oval, semicircle
Cylinder boundary layer flow mechanism all can be played same effect by shape, gear shape etc..
Generally speaking, the present invention contributes to reducing fluctuation pressure produced by marine riser, improves the anti-vortex-induced vibration performance of standpipe,
This proposes a kind of brand-new thinking to the design of modern marine standpipe.The present invention increases the mechanism of the hydrodynamic performance of marine riser
Be: vortex it initiate side shear layer vorticity supply under, vorticity intensity constantly increases, towing opposite shear layer
Through tail, towed shear layer carries the fluid with opposite direction vorticity, has cut off the vorticity supply of above vortex,
Result in coming off of vortex eventually；Axial projection structure function, in the shear layer of damaged surface, forms the transmittance process at initial stage at vortex
In play reduction vortex vorticity intensity, then weaken volume inhale layer effect, reach suppress marine riser produce vortex-induced vibration purpose.
Additionally, use the mode being uniformly distributed circumferentially on surface, so that this structure has omni-directional, the direction flowed is not had
Sensitivity；The design of this structure is the compactest, and inhibition of vibration is stable, and cost is relatively low, and development prospect is wide.
In conjunction with Fig. 6 and Fig. 7, the present invention and common cylinder its be different around stream mechanism, A and B is formed in cylinder both sides
Vortex.Owing to A and B is alternatively formed, comes off and with certain periodicity, therefore, in the cylinder both sides meeting being perpendicular to the flow direction
Form pressure differential so that cylinder produces pulsation phenomenon；Cylinder pulsation can produce retroaction to current, flows more multiple around cylinder
Miscellaneous, the vibration of aggravation cylinder.The formation in whirlpool and dropping situations during 6 and Fig. 7 two kinds of different cross section flow past cylinders of comparison diagram, with
Form the little whirlpool contrary with main flow vorticity in groove between the both sides bulge-structure of bulge-structure cylinder, boundary region outer fluid is produced
Raw adsorption, separation delay point delays coming off and main flow vorticity being reduced of whirlpool, finally makes the pulsation phenomenon that cylinder produces
Weaken, effectively inhibit the generation of vortex-induced vibration.
Claims (6)
- The most novel bionical standpipe of anti-vortex-induced vibration, it is characterised in that: the cross section of bionical standpipe is the wavy of cycle convex type.
- The novel bionical standpipe of anti-vortex-induced vibration the most according to claim 1, it is characterised in that: the ripple of described cycle convex type Wave-like has a 8-13 cycle, and is uniformly arranged along the circumference of bionical standpipe.
- The novel bionical standpipe of anti-vortex-induced vibration the most according to claim 1, it is characterised in that: the minimum of described bionical standpipe External diameter is not less than 2:3 with the ratio of maximum outside diameter.
- 4. according to the bionical standpipe of novel anti-vortex-induced vibration described in claim 1 or 2 or 3, it is characterised in that: cycle convex type Wavy each cycle be all to be formed by elliptic arc and straight line bridge joint.
- 5. according to the bionical standpipe of novel anti-vortex-induced vibration described in claim 1 or 2 or 3, it is characterised in that: cycle convex type Wavy each cycle be all by cambered outwards semi arch with concave semi arch bridge joint form.
- 6. according to the bionical standpipe of novel anti-vortex-induced vibration described in claim 1 or 2 or 3, it is characterised in that: cycle convex type Wavy each cycle be all to be formed by flute profile contour line and straight line bridge joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532847.3A CN106014275A (en) | 2016-07-07 | 2016-07-07 | Novel vortex-induced vibration resisting bionic riser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532847.3A CN106014275A (en) | 2016-07-07 | 2016-07-07 | Novel vortex-induced vibration resisting bionic riser |
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| Publication Number | Publication Date |
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| CN106014275A true CN106014275A (en) | 2016-10-12 |
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| CN201610532847.3A Pending CN106014275A (en) | 2016-07-07 | 2016-07-07 | Novel vortex-induced vibration resisting bionic riser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741685A (en) * | 2016-11-17 | 2017-05-31 | 大连理工大学 | One kind suppresses vortex-induced vibration skin clothing |
| CN106949960A (en) * | 2016-12-09 | 2017-07-14 | 宁波韵声机芯制造有限公司 | Music box tablet frequency measuring device exciting agency |
| CN107672738A (en) * | 2017-09-21 | 2018-02-09 | 东南大学 | A kind of novel shock-resistant pressure hull structure |
| CN110541677A (en) * | 2019-08-13 | 2019-12-06 | 中国石油大学(华东) | Device, marine riser and method for inhibiting vortex-induced vibration |
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|---|---|---|---|---|
| WO2002095278A1 (en) * | 2001-05-18 | 2002-11-28 | Crp Group Limited | Protection of underwater elongate members |
| GB2378969A (en) * | 2001-08-23 | 2003-02-26 | Balmoral Group | Vortex-induced vibration suppression |
| CN203594056U (en) * | 2013-09-16 | 2014-05-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Basic wave current excitation vibration reduction device for offshore wind power single pile |
| CN203867488U (en) * | 2014-05-15 | 2014-10-08 | 西南石油大学 | Riser vortex-induced vibration suppression device capable of realizing automatic deformation response |
| CN104453730A (en) * | 2014-11-10 | 2015-03-25 | 西南石油大学 | Buoyancy block surface structure for reducing ocean current resistance borne by waterproof pipe column |
| US9080392B1 (en) * | 2011-08-25 | 2015-07-14 | VIV Solutions LLC | Vortex-induced vibration suppression devices for retrofitting |
-
2016
- 2016-07-07 CN CN201610532847.3A patent/CN106014275A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002095278A1 (en) * | 2001-05-18 | 2002-11-28 | Crp Group Limited | Protection of underwater elongate members |
| GB2378969A (en) * | 2001-08-23 | 2003-02-26 | Balmoral Group | Vortex-induced vibration suppression |
| US9080392B1 (en) * | 2011-08-25 | 2015-07-14 | VIV Solutions LLC | Vortex-induced vibration suppression devices for retrofitting |
| CN203594056U (en) * | 2013-09-16 | 2014-05-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Basic wave current excitation vibration reduction device for offshore wind power single pile |
| CN203867488U (en) * | 2014-05-15 | 2014-10-08 | 西南石油大学 | Riser vortex-induced vibration suppression device capable of realizing automatic deformation response |
| CN104453730A (en) * | 2014-11-10 | 2015-03-25 | 西南石油大学 | Buoyancy block surface structure for reducing ocean current resistance borne by waterproof pipe column |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741685A (en) * | 2016-11-17 | 2017-05-31 | 大连理工大学 | One kind suppresses vortex-induced vibration skin clothing |
| CN106741685B (en) * | 2016-11-17 | 2018-04-10 | 大连理工大学 | One kind suppresses vortex-induced vibration skin clothing |
| CN106949960A (en) * | 2016-12-09 | 2017-07-14 | 宁波韵声机芯制造有限公司 | Music box tablet frequency measuring device exciting agency |
| CN106949960B (en) * | 2016-12-09 | 2024-04-16 | 宁波韵声机芯制造有限公司 | Excitation mechanism for music sheet frequency measuring device of music instrument |
| CN107672738A (en) * | 2017-09-21 | 2018-02-09 | 东南大学 | A kind of novel shock-resistant pressure hull structure |
| CN107672738B (en) * | 2017-09-21 | 2019-04-30 | 东南大学 | A kind of novel shock-resistant pressure hull structure |
| CN110541677A (en) * | 2019-08-13 | 2019-12-06 | 中国石油大学(华东) | Device, marine riser and method for inhibiting vortex-induced vibration |
| 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 |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |