CN107916899B - A kind of vortex-induced vibration suppression device and method of the rotatable wavy orifice plate of variable orifice diameter - Google Patents
A kind of vortex-induced vibration suppression device and method of the rotatable wavy orifice plate of variable orifice diameter Download PDFInfo
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- CN107916899B CN107916899B CN201711195676.0A CN201711195676A CN107916899B CN 107916899 B CN107916899 B CN 107916899B CN 201711195676 A CN201711195676 A CN 201711195676A CN 107916899 B CN107916899 B CN 107916899B
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- 230000001629 suppression Effects 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005764 inhibitory process Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000009329 sexual behaviour Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The present invention relates to the vortex-induced vibration suppression devices and method of a kind of rotatable wavy orifice plate of variable orifice diameter, device is made of two rotating supports and four pieces of wavy orifice plates, two rotating supports are fixed on standing tube outer wall by the height suit of the wavy orifice plate in one piece of interval, and four pieces of wavy orifice plates are circumferentially equidistantly fixed on rotating support along standpipe.Ocean current impacts wavy orifice plate and whole device is driven to rotate around standpipe, the wavy orifice plate of rotation constantly cuts the Flow Field around standpipe, and ocean current is induced to generate vertical and radial flow adjustment along wavy orifice surface, and ocean current further disturbs the Flow Field of standpipe by foring local jet when flow-disturbing hole.It is adjusted, under the collective effect of local jet in circumgyration incision, spatial flow, destroys the structure of vortex, realize the inhibition of vortex-induced vibration.
Description
Technical field
The invention belongs to marine riser facility laying technology fields, and in particular to a kind of rotatable wavy orifice plate of variable orifice diameter
Vortex-induced vibration suppression device and method.
Background technique
Marine oil and gas rich reserves, exploration and development extend to deep-sea from shallow sea, the marine environment severe in face of deep-sea,
The equipment of drilling operation receives stern challenge.Marine riser stands in the breach, the crucial fluid as connection seabed and sea
Channel, importance and safety are self-evident.The marine riser being exposed in deep water for a long time subjects the impact of ocean current, seawater
The physical chemistry harm such as corrosion.Particularly, for ocean current flow velocity in a certain range, the vortex released from standpipe two sides can make standpipe
Vibration frequency is locked in intrinsic frequency, and excitation is substantially vibrated, to lure that fatigue fracture occurs for standpipe into, causes immeasurable calamity
Difficult sexual behavior event.In order to reduce influence of the vibration caused by vortex to marine riser, it is common practice to be installed on standpipe attached
The equipment for inhibiting of vibration of category.
Common inhibition device is broadly divided into two kinds: active control is controlled with passive.Active control passes through consumption external energy
Measure active interference Flow Field, such as pivoting lever.Active control energy consumption is larger, and installation inconvenience and higher cost are not easy to
It is used in Practical Project.Passive control is mainly cutd open by the device outside the surface shape or plus of change standpipe to change to stream
Face, to influence the generation and development of vortex, such as separator disk, radome fairing, spiral strake.However, they to direction of flow and
Flow velocity is more sensitive, often can only limitation flow velocity and flow to play under operating condition and inhibit effect.
Summary of the invention
Problem to be solved by this invention is to inhibit deficiency existing for device for existing vortex-induced vibration of marine riser, is provided
The rotatable variable orifice diameter that a kind of structure is simple, reliable performance, in-site installation are convenient, can adapt to any direction incoming flow automatically is wavy
The vortex-induced vibration suppression device and method of orifice plate.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of vortex-induced vibration suppression device of the rotatable wavy orifice plate of variable orifice diameter, it is wavy by two rotating supports and four pieces
Orifice plate composition.Rotating support is the nested bearing of inside and outside circle, from the inside to the outside respectively bearing inner race, cylindrical roller and roller
Retainer, bearing outer ring, cylindrical roller are limited by roller cage, and are embedded between bearing inner race and bearing outer ring；Rotation
The internal diameter of support frame bearing inner race is equal to standpipe outer diameter, the outer surface of bearing outer ring circumferentially four pieces of support plates of equidistantly distributed,
It is opened in every piece of support plate there are two the vertical inner bolt hole through support plate, the axis of inner bolt hole and the axis of rotating support are flat
Row；Two rotating supports are fixed on standing tube outer wall by the height suit of the wavy orifice plate in one piece of interval.
Wavy orifice plate is the perforated plate of the linear wavy fluctuating of a vertical section, and wavy orifice plate is vertical upper and lower etc.
Width, the upper surface and lower end surface of wavy orifice plate have the support of the rotating support with the rotating support on top and lower part
Four pieces of wavy orifice plates are circumferentially equidistantly fixed on rotating support along standpipe by bolt by the corresponding threaded hole of plate inner bolt hole
On.Wavy orifice surface is provided with three column flow-disturbing holes, and wavy orifice plate is run through in flow-disturbing hole, and the flow-disturbing bore dia in same row is identical, no
The flow-disturbing bore dia of same column is different, and flow-disturbing bore dia is gradually reduced along the radial aperture from the inside to the outside of standpipe, i.e. disturbing close to standpipe
Discharge orifice is maximum, and the flow-disturbing bore dia far from standpipe is minimum.
A kind of rotatable change can be provided using the vortex-induced vibration suppression device of the rotatable wavy orifice plate of variable orifice diameter
The vortex-induced vibration inhibiting method of the wavy orifice plate in aperture.No matter ocean current from which direction flows through standpipe, all at least two pieces of wavy holes
Plate and ocean current form the angle of attack, and wavy orifice plate forms torque under the impact of ocean current, so that whole device be driven to rotate around standpipe.Rotation
The wavy orifice plate turned constantly cuts the Flow Field around standpipe, the very disruptive separation in boundary layer and the shape for streaming vortex
At.Meanwhile there are vertical and radial flow adjustments in wavy orifice surface for ocean current, on the one hand, since wavy orifice plate is vertical
Corrugate rises and falls, and along wavy orifice surface catenary motion occurs for part ocean current, so that the ocean current of different depth occurs spatially
Transfer, weaken ocean current in the plane around the energy of flow, change the three-dimensional spiral structure that original standpipe streams；Another party
Face, radially diameter is different for the flow-disturbing hole on wavy orifice plate, so that part ocean current is transferred on the inside of standpipe on the outside of standpipe
The flow-disturbing hole of large aperture passes through, and produces flow adjustment radially, and more ocean current is from large aperture flow-disturbing hole on the inside of standpipe
By when, be filled with momentum around laminar boundary layer to standpipe, separation of the standpipe around laminar boundary layer delayed, to reduce wake flow
Width reduces the pressure drag before and after standpipe.In addition, ocean current by rotate wavy orifice plate flow-disturbing hole when form part penetrate
Stream, further disturbs the Flow Field of standpipe, and the local jet velocity magnitude formed at the flow-disturbing hole of different pore size is different,
Increase the turbulent fluctuation degree of Flow Field.Therefore, the spatial flow vertical and radial in the flow field cutting, ocean current that rotate wavy orifice plate
It is dynamic to adjust, under the collective effect of flow-disturbing hole local jet, reduce standpipe plane around the energy of flow, Flow Field is dry by depth
It disturbs, the formation and three-dimensional spiral structure of tail portion vortex is destroyed, to realize the inhibition of vortex-induced vibration.
The present invention has the advantage that due to taking above technical scheme
1, under the impact of ocean current in any direction of the wavy orifice plate of apparatus of the present invention, rotating support can be driven around vertical
Pipe rotation, adaptation flow to marine environment complicated and changeable；
2, the wavy orifice plate of apparatus of the present invention is disposably process by light material, and install convenient is corrosion-resistant.
Detailed description of the invention
Fig. 1 is present apparatus overall structure diagram；
Fig. 2 is the present apparatus individually fractionation schematic diagram of wavy orifice plate and rotating support；
Fig. 3 is present apparatus rotating support structural schematic diagram；
Fig. 4 is installation present apparatus front and back standpipe around flow diagram；
Wherein: 1, standpipe；2, wavy orifice plate；3, flow-disturbing hole；4, rotating support；5, bearing inner race；6, bearing outer ring；7,
Cylindrical roller；8, roller cage；9, support plate.
Specific embodiment
Specific implementation of the invention is further described with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of vortex-induced vibration suppression device of the rotatable wavy orifice plate of variable orifice diameter, by two rotation branch
Support 4 and four pieces of wavy orifice plates 2 form.Rotating support 4 is the nested bearing of inside and outside circle, from the inside to the outside respectively in bearing
Circle 5, cylindrical roller 7 and roller cage 8, bearing outer ring 6, cylindrical roller 7 is limited by roller cage 8, and is embedded in bearing
Between inner ring 5 and bearing outer ring 6；The internal diameter of 4 bearing inner race 5 of rotating support is equal to 1 outer diameter of standpipe, the appearance of bearing outer ring 6
Face circumferentially four pieces of support plates 9 of equidistantly distributed, open that there are two the vertical inner bolt holes through support plate 9 in every piece of support plate 9, interior
The axis of screw hole is parallel with the axis of rotating support 4；Two rotating supports 4 are by the height set for being spaced one piece of wavy orifice plate 2
Dress is fixed on 1 outer wall of standpipe.
As shown in Fig. 2, wavy orifice plate 2 is the perforated plate of the linear wavy fluctuating of a vertical section, wavy orifice plate 2 exists
Vertical upper and lower wide, the upper surface and lower end surface of wavy orifice plate 2 have and the rotating support 4 on top and the rotation of lower part
The corresponding threaded hole of 9 inner bolt hole of support plate for turning support frame 4, it is by bolt that four pieces of wavy orifice plates 2 are circumferential equidistant along standpipe 1
It is fixed on rotating support 4.Wavy 2 surface of orifice plate is provided with three column flow-disturbing holes 3, and wavy orifice plate 2, same row are run through in flow-disturbing hole 3
On 3 diameter of flow-disturbing hole it is identical, flow-disturbing hole 3 diameter of different lines is different, and 3 diameter of flow-disturbing hole is radial from the inside to the outside along standpipe 1
Aperture is gradually reduced, i.e., maximum close to the flow-disturbing hole of standpipe 13, and 3 diameter of flow-disturbing hole far from standpipe 1 is minimum.
As shown in figure 4, one can be provided using the vortex-induced vibration suppression device of the rotatable wavy orifice plate of variable orifice diameter
The vortex-induced vibration inhibiting method of the rotatable wavy orifice plate of variable orifice diameter of kind.No matter ocean current from which direction flows through standpipe 1, all at least
Two pieces of wavy orifice plates 2 form the angle of attack with ocean current, and wavy orifice plate 2 forms torque under the impact of ocean current, to drive whole device
It is rotated around standpipe 1.The wavy orifice plate 2 of rotation constantly cuts the Flow Field around standpipe 1, point in very disruptive boundary layer
From with the formation of streaming vortex.Meanwhile there are vertical and radial flow adjustments on wavy 2 surface of orifice plate for ocean current, on the one hand, by
It rises and falls in wavy orifice plate 2 in vertical corrugate, along wavy 2 surface of orifice plate catenary motion occurs for part ocean current, so that different deep
Transfer spatially occurs for the ocean current of degree, weaken ocean current in the plane around the energy of flow, change original standpipe 1 streams three
Tie up spiral structure；On the other hand, radially diameter is different for the flow-disturbing hole 3 on wavy orifice plate 2, so that part ocean current is from standpipe
1 outside is transferred to the flow-disturbing hole 3 of 1 inside large aperture of standpipe and passes through, and produces flow adjustment radially, and more ocean current from
When 1 inside large aperture flow-disturbing of standpipe, 3 hole passes through, it is filled with momentum around laminar boundary layer to standpipe 1, standpipe 1 is delayed and streams side
The separation of interlayer reduces the pressure drag of 1 front and back of standpipe to reduce the width of wake flow.In addition, ocean current passes through the wavy of rotation
Local jet is formd when the flow-disturbing hole 3 of orifice plate 2, further disturbs the Flow Field of standpipe 1, and the flow-disturbing hole of different pore size
The local jet velocity magnitude formed at 3 is different, increases the turbulent fluctuation degree of Flow Field.Therefore, wavy orifice plate 2 is being rotated
Flow field is cut, ocean current is vertical and radial spatial flow adjusts, under the collective effect of 3 local jet of flow-disturbing hole, makes 1 plane of standpipe
Reduce around the energy of flow, Flow Field is interfered by depth, the formation and three-dimensional spiral structure of tail portion vortex is destroyed, to realize
The inhibition of vortex-induced vibration.
Specific embodiment:
When apparatus of the present invention are installed, two rotating supports 4 are assembled first, by bearing inner race 5, cylindrical roller 7 and roller
Retainer 8, bearing outer ring 6 are assembled from the inside to the outside, and cylindrical roller 7 and roller cage 8 are being embedded in 5 He of bearing inner race
Lubricating oil is added during bearing outer ring 6 to guarantee the verticity of rotating support 4；Then, by the one piece of wavy hole in interval
The height of plate 2, rotationally supports frame 4 for two and is set with one on the other and be fixed on 1 outer wall of standpipe, and by upper and lower two rotations branch
The inner bolt hole of 4 support plate 9 of support is aligned.Four pieces of wavy orifice plates 2 are placed between rotating support 4, is screwed in and is rotated with bolt
The inner bolt hole of 4 support plate 9 of support frame and the threaded hole of wavy orifice plate 2, it is by bolt that four pieces of wavy orifice plates 2 are circumferential along standpipe 1
Equidistantly it is fixed on rotating support 4.
After the installation is completed, the standpipe 1 for being equipped with the device is placed in ocean current.No matter ocean current flowed through from which direction it is vertical
Pipe 1, all at least two pieces wavy orifice plates 2 form the angle of attack with ocean current, and wavy orifice plate 2 forms torque under the impact of ocean current, thus
Whole device is driven to rotate around standpipe 1.The wavy orifice plate 2 of rotation constantly cuts the Flow Field around standpipe 1, very disruptive
The separation in boundary layer and the formation for streaming vortex.Meanwhile there are vertical and radial flowing tune on wavy 2 surface of orifice plate for ocean current
It is whole, on the one hand, since wavy orifice plate 2 rises and falls in vertical corrugate, along wavy 2 surface of orifice plate vertical fortune occurs for part ocean current
It is dynamic so that transfer spatially occurs for the ocean current of different depth, weaken ocean current in the plane around the energy of flow, change original
The three-dimensional spiral structure that standpipe 1 streams；On the other hand, radially diameter is different for the flow-disturbing hole 3 on wavy orifice plate 2, so that
The flow-disturbing hole 3 that part ocean current is transferred to 1 inside large aperture of standpipe on the outside of standpipe 1 passes through, and produces flow adjustment radially,
And more ocean current is filled with momentum around laminar boundary layer to standpipe 1 when passing through from 1 inside large aperture flow-disturbing of standpipe, 3 hole, postpones
Separation of the standpipe 1 around laminar boundary layer reduces the pressure drag of 1 front and back of standpipe to reduce the width of wake flow.In addition, ocean current
By foring local jet when the flow-disturbing hole 3 of the wavy orifice plate 2 of rotation, the Flow Field of standpipe 1 is further disturbed, and not
It is different with the local jet velocity magnitude formed at the flow-disturbing hole 3 in aperture, increase the turbulent fluctuation degree of Flow Field.Therefore, exist
Rotate the flow field cutting of wavy orifice plate 2, the vertical and radial spatial flow adjustment of ocean current, 3 local jet of flow-disturbing hole common work
Under, reduce 1 plane of standpipe around the energy of flow, Flow Field is interfered by depth, destroys the formation and three-dimensional of tail portion vortex
Spiral structure, to realize the inhibition of vortex-induced vibration.
Claims (2)
1. a kind of vortex-induced vibration suppression device of the rotatable wavy orifice plate of variable orifice diameter, by two rotating supports (4) and four blocks of waves
Shape orifice plate (2) composition；Rotating support (4) is the nested bearing of inside and outside circle, from the inside to the outside respectively bearing inner race (5), cylinder
Roller (7) and roller cage (8), bearing outer ring (6), cylindrical roller (7) is limited by roller cage (8), and is embedded in axis
It holds between inner ring (5) and bearing outer ring (6), the internal diameter of rotating support (4) bearing inner race (5) is equal to standpipe (1) outer diameter；Pass through
Four pieces of wavy orifice plates (2) are circumferentially equidistantly fixed on rotating support (4) by bolt along standpipe (1)；It is characterized by: described
Rotating support (4) bearing outer ring (6) outer surface circumferentially four pieces of support plates (9) of equidistantly distributed, every piece of support plate (9)
On open there are two the vertical inner bolt hole through support plate (9), the axis of inner bolt hole is parallel with the axis of rotating support (4), two
A rotating support (4) is fixed on standpipe (1) outer wall by the height suit of the wavy orifice plate (2) in one piece of interval；Described is wavy
Orifice plate (2) is the perforated plate of the linear wavy fluctuating of a vertical section, and wavy orifice plate (2) is wavy vertical upper and lower wide
The upper surface and lower end surface of orifice plate (2) have the branch of the rotating support (4) with the rotating support on top (4) and lower part
The corresponding threaded hole of fagging (9) inner bolt hole；Wavy orifice plate (2) surface is provided with three column flow-disturbing holes (3), and flow-disturbing hole (3) are through wavy
Orifice plate (2), flow-disturbing hole (3) diameter in same row is identical, and flow-disturbing hole (3) diameter of different lines is different, flow-disturbing hole (3) diameter
It is gradually reduced along the radial aperture from the inside to the outside of standpipe (1).
2. a kind of vortex-induced vibration inhibiting method of the rotatable wavy orifice plate of variable orifice diameter, using as described in claim 1 rotatable
The vortex-induced vibration suppression device of the wavy orifice plate of variable orifice diameter, it is characterised in that: no matter ocean current from which direction flows through standpipe (1), all
At least two pieces of wavy orifice plates (2) and ocean current form the angle of attack, and wavy orifice plate (2) forms torque under the impact of ocean current, thus band
Dynamic whole device is rotated around standpipe (1)；The wavy orifice plate (2) of rotation constantly cuts the Flow Field around standpipe (1), seriously
It has upset the separation in boundary layer and has streamed the formation of vortex；Meanwhile there are vertical and radial on wavy orifice plate (2) surface for ocean current
Flow adjustment, on the one hand, since wavy orifice plate (2) rises and falls in vertical corrugate, part ocean current is sent out along wavy orifice plate (2) surface
Raw catenary motion so that transfer spatially occurs for the ocean current of different depth, weaken ocean current in the plane around the energy of flow, change
The three-dimensional spiral structure that original standpipe (1) streams is become；On the other hand, the radially diameter of the flow-disturbing hole (3) on wavy orifice plate (2)
It is not of uniform size, so that the flow-disturbing hole (3) that part ocean current is transferred to large aperture on the inside of standpipe (1) on the outside of standpipe (1) passes through, generate
Flow adjustment radially, and more ocean current from large aperture flow-disturbing hole (3) on the inside of standpipe (1) by when, give standpipe (1)
Be filled with momentum around laminar boundary layer, delay standpipe (1) around the separation of laminar boundary layer, to reduce the width of wake flow, reduce
Pressure drag before and after standpipe (1)；In addition, ocean current by rotate wavy orifice plate (2) flow-disturbing hole (3) when form part penetrate
Stream, further disturbs the Flow Field of standpipe (1), and the local jet speed formed at the flow-disturbing hole (3) of different pore size is big
It is small different, increase the turbulent fluctuation degree of Flow Field；Therefore, the flow field cutting, ocean current that rotate wavy orifice plate (2) be vertical and diameter
To spatial flow adjustment, flow-disturbing hole (3) local jet collective effect under, make standpipe (1) plane around the energy of flow reduce, stream
Flow field is interfered by depth, the formation and three-dimensional spiral structure of tail portion vortex is destroyed, to realize the inhibition of vortex-induced vibration.
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| CN201711195676.0A CN107916899B (en) | 2017-11-24 | 2017-11-24 | A kind of vortex-induced vibration suppression device and method of the rotatable wavy orifice plate of variable orifice diameter |
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| CN201711195676.0A CN107916899B (en) | 2017-11-24 | 2017-11-24 | A kind of vortex-induced vibration suppression device and method of the rotatable wavy orifice plate of variable orifice diameter |
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| CN108679357B (en) * | 2018-05-13 | 2019-10-01 | 西南石油大学 | A kind of whirlpool vibration inhibition device and method that magnetic force swing is combined with water conservancy diversion rotation |
| CN109267668A (en) * | 2018-11-16 | 2019-01-25 | 郑州大学 | A kind of broken whirlpool device of the spin inhibiting steel pipe tall and slender structure vortex-induced vibration |
| CN110296855B (en) * | 2019-07-05 | 2020-11-24 | 上海中认尚科新能源技术有限公司 | Detection method for evaluating vortex-induced-shock resistance of high-flexibility tower of wind generating set |
| CN111271216B (en) * | 2020-02-02 | 2021-01-15 | 西南石油大学 | Device and method for generating power and suppressing vibration by swinging arc wing plate with rough surface |
| CN113789817B (en) * | 2021-11-16 | 2022-02-08 | 中国海洋大学 | Vortex-type maritime work foundation comprehensive scouring protection device based on multistage vortex breaking device |
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| US8579546B2 (en) * | 2008-01-18 | 2013-11-12 | VIV Supression, Inc. | Apparatus and method for inhibiting vortex-induced vibration |
| US9523247B1 (en) * | 2013-03-05 | 2016-12-20 | VIV Solutions LLC | Spaced VIV suppression system |
| KR20170021530A (en) * | 2015-08-18 | 2017-02-28 | 대우조선해양 주식회사 | Vortex Induced Vibration Reducing Structure and Riser having the Same |
| CN106437544B (en) * | 2016-09-23 | 2018-10-19 | 西南石油大学 | One kind can revolve dismantled and assembled S-shaped strake vortex-induced vibration suppression device and method |
| CN106545301B (en) * | 2016-11-02 | 2018-07-10 | 西南石油大学 | A kind of rotatable synchronous device and method for realizing piezo-electric generating and vibration suppression |
| CN206477803U (en) * | 2017-02-07 | 2017-09-08 | 西南石油大学 | The marine riser vortex-induced vibration suppression device that a kind of radome fairing and active suppression are combined |
| CN107091059A (en) * | 2017-05-16 | 2017-08-25 | 哈尔滨工程大学 | A kind of flexible anti-vortex-induced vibration device for submerged riser |
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