CN106284265B - The fusiformis cone vibration-repressing device and method of diversion culvert are set in a kind of - Google Patents
The fusiformis cone vibration-repressing device and method of diversion culvert are set in a kind of Download PDFInfo
- Publication number
- CN106284265B CN106284265B CN201610846729.XA CN201610846729A CN106284265B CN 106284265 B CN106284265 B CN 106284265B CN 201610846729 A CN201610846729 A CN 201610846729A CN 106284265 B CN106284265 B CN 106284265B
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- CN
- China
- Prior art keywords
- fusiformis
- cone sleeve
- standpipe
- cone
- diversion culvert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
- E02B17/003—Fenders
Abstract
The present invention relates to a kind of interior fusiformis cone vibration-repressing device for setting diversion culvert and method, device to be made of fusiformis cone sleeve, fin and bearing.Fusiformis cone sleeve is set on the bearing of standing tube outer wall, can be rotated around standpipe.The diversion culvert of four pairs of risings of spiraling is opened up in fusiformis cone sleeve, outer surface is coarse and is from top to bottom laid with 4 fins.Diversion culvert can transfer the current of different depth, and form circumferential shear flow in fusiformis cone sleeve outer surface, and fin can drive fusiformis cone sleeve rotating after by water impact.Diversion culvert water conservancy diversion, fin drive fusiformis cone sleeve rotate and the collective effect of rough surface under, the cooperative achievement suppression of standpipe vortex-induced vibration to a greater degree.Apparatus of the present invention cost is low, corrosion-resistant, easy for installation, function is notable.
Description
Technical field
The invention belongs to marine riser facility laying technology field, and in particular to the fusiformis taper of diversion culvert is set in a kind of
Body vibration-repressing device and method.
Background technology
The non-renewable energy resources such as oil, natural gas are still strategic resource irreplaceable in the current national economic development.Land
Sight is turned on the abysmal area that area is vast, petroleum resources enriches by the decline an urgent demand people of upper petroleum resources proved reserves
Domain.In marine oil and gas exploitation, standpipe is essential critical component, it is responsible for connection underwater well head and is set with operations offshore
Apply, be the important channel of gas stream lifting.Security and stability of the standpipe under abyssal environment is of crucial importance, it is almost submerged
In seawater, fatigue damage is the main reason for causing standpipe to fail, and fatigue damage is mainly due to wave and ocean current is made
With the vortex-induced vibration of formation.When the ocean current or wave of certain flow rate flow through standpipe, it can form what is alternately come off at standpipe back
Vortex, coming off for vortex constitute standpipe periodically alternating power, cause standpipe to be vibrated in flow direction and horizontal produce.It is once vertical
Pipe can not only produce great oil accident, cause huge economic loss because fatigue failure occurs for vibration, can also be to marine environment
Form catastrophic failure.
Therefore, the hot issue that standpipe vibration is ocean engineering field is suppressed.At present, scholar proposes that change material is intrinsic
Frequency come avoid vortex shedding frequencies so as not to resonance, it can avoid resonance, but can not avoid vibrating.More scholars are from standpipe
Surface configuration is started with, and by varying standpipe surface configuration, is moved after making boundary layer separation point, the formation for reducing vortex swashs to suppress whirlpool
Vibration.The spiral strake of existing restraining device, separator disk, ribbon, spoiler, radome fairing etc., but separator disk, ribbon, rectification
Cover etc. may only realize that the vortex-induced vibration in single direction of flow suppresses, and in actual marine environment, the direction of ocean current and wave
Random change；Although spiral strake can realize that the vortex-induced vibration in any direction of flow suppresses, it, which exists, increases standpipe
Drag.Therefore, it is non-to design a kind of device for coping with any direction incoming and there is obvious vortex-induced vibration inhibition
It is often necessary.
The content of the invention
Problem solved by the invention is the deficiency for existing standpipe vortex-induced vibration suppression device and method, there is provided a kind of
In-site installation is convenient, can tackle the interior fusiformis cone vibration-repressing device and method for setting diversion culvert of any direction incoming.
To achieve the above object, the present invention adopts the following technical scheme that：
The fusiformis cone vibration-repressing device that diversion culvert is set in a kind of is made of fusiformis cone sleeve, fin and bearing.
The cylindrical cavity coaxial with its axis is provided with the middle part of fusiformis cone sleeve, fusiformis cone sleeve passes through its cylindrical cavity
Standing tube outer wall is set in, cylindrical cavity inner wall both ends are equipped with internal thread.The outer surface of fusiformis cone sleeve is by central angle
By circular arc that 35 ° of arc length are 18 times of standpipe diameters around 360 ° of arc surfaces formed of standpipe axial-rotation, and rough surface.Shuttle
Shape cone sleeve inner from top to bottom offers a pair of rising water conservancy diversion that spirals counterclockwise staggeredly on standpipe pipe axial symmetry and contains
On hole (spiral to rise diversion culvert one and spiral counterclockwise counterclockwise and rise diversion culvert three), a pair of clockwise spiral staggeredly
Rise diversion culvert (clockwise spiral rises diversion culvert one and clockwise spiral rises diversion culvert three), a pair of inverse time staggeredly
Dials screws on a liter diversion culvert (spiral to rise diversion culvert two and spiral counterclockwise counterclockwise and rise diversion culvert four), Yi Duijiao
Wrong clockwise spiral rises diversion culvert, and (clockwise spiral rises diversion culvert two and clockwise spiral rises diversion culvert
Four), four pairs of interleaved flow culvert positions are uniformly distributed along standpipe tube axial direction.The outer surface of fusiformis cone sleeve is by upper
4 fins are laid with, the length direction of fin is axial arranged along standpipe, and 4 fins are along fusiformis cone sleeve outer surface
Circumferential spaced 90 °, and helically decline arrangement.Bearing sets the inside and outside coil structures of cylindrical roller for centre, and bearing has two,
Standing tube outer wall is installed on by the one fusiformis cone sleeve height in interval.Two bearing outer ring outer walls are equipped with external screw thread, respectively
Engaged with two end surfaces internal thread of fusiformis cone sieeve cylindrical hole, fusiformis cone sleeve is connected with bearings at both ends outer ring
It is connected into and is integrated, so that fusiformis cone sleeve can be rotated around standpipe.
It can be provided in a kind of using the fusiformis cone vibration-repressing device that diversion culvert is set in described and set diversion culvert
Fusiformis cone vibration suppression method.After any direction incoming flow to fusiformis cone sleeve, since fusiformis cone sleeve surface has
16 diversion culvert holes, can guide incoming from different directions, current is flowed into and is flowed out along diversion culvert, be formed along fusiformis
The circumferential shear flow of cone sleeve outer surface, effectively upsets the Flow Field distribution of standpipe surrounding, destroys and stream border
Layer, it is suppressed that the Vortex Shedding at standpipe back.And since diversion culvert helically rises shape, the water of different depth can be transferred
Stream, disturbance is produced to the flow field at vertical different water depth, destroys the formation of three-dimensional vortex.Meanwhile fusiformis cone sleeve appearance
Face is coarse, and opposing connection laminar boundary layer, which is formed, to be destroyed, and is weakened wake flow vortex intensity, be further suppress vortex-induced vibration.In addition, current
Impact can produce impact force to fin, promote fusiformis cone sleeve to be rotated around standpipe when on 4 fins of screw arrangement,
Flow Field Distribution is further adjusted, realizes the suppression of vortex-induced vibration to a greater degree.Fusiformis cone is driven in diversion culvert water conservancy diversion, fin
Under the collective effect of the rotation of shape body sleeve and rough surface, the suppression of standpipe vortex-induced vibration is realized.
The present invention is since using above technical scheme, it has the following advantages：
1st, the present invention adapts to the marine environment of flow direction change, and fusiformis cone set is driven by diversion culvert water conservancy diversion, fin
Cylinder rotates and the collective effect of rough surface, vortex-induced vibration inhibition is reached optimal, extends the service life of standpipe；
2nd, fusiformis cone sleeve of the invention is made of plastics, corrosion-resistant, cost is low.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of apparatus of the present invention
Fig. 2 is apparatus of the present invention diversion culvert space cloth position schematic diagram
Fig. 3 is the schematic diagram that apparatus of the present invention diversion culvert is cut away half surface
Fig. 4 is apparatus of the present invention bearing arrangement schematic diagram
Fig. 5 is the inside and outside circle of apparatus of the present invention bearing and single cylindrical roller schematic diagram
Fig. 6 is apparatus of the present invention fin space cloth position schematic diagram
Fig. 7 is apparatus of the present invention fin top view
Fig. 8 is apparatus of the present invention fusiformis cone sleeve ends schematic diagram
Wherein：1. standpipe；2. fusiformis cone sleeve；3. fin；4. bearing outer ring；Rise water conservancy diversion 51. spiraling counterclockwise
Culvert one；Rise diversion culvert two 52. spiraling counterclockwise；Rise diversion culvert three 53. spiraling counterclockwise；54. spiral counterclockwise
Rise diversion culvert four；61. clockwise spiral rises diversion culvert one；62. clockwise spiral rises diversion culvert two；It is 63. suitable
Hour hands, which spiral, rises diversion culvert three；64. clockwise spiral rises diversion culvert four；7. bearing inner race；8. cylindrical roller.
Embodiment
With reference to the accompanying drawings and embodiments, the specific implementation to the present invention is further described：
As shown in Figure 1, the fusiformis cone vibration-repressing device of diversion culvert is set by fusiformis cone sleeve 2, fin 3 in a kind of
And bearing composition.The middle part of fusiformis cone sleeve 2 is provided with the cylindrical cavity coaxial with its axis, and fusiformis cone sleeve 2 is logical
Cross its cylindrical cavity and be set in 1 outer wall of standpipe, cylindrical cavity inner wall both ends are equipped with internal thread, as shown in Figure 8.Fusiformis taper
It by central angle is circular arc that 35 ° of arc length are 18 times of 1 diameters of standpipe around 1 axial-rotation of standpipe, 360 ° of institutes that the outer surface of body sleeve 2, which is,
The arc surface of formation, and rough surface.As shown in Figure 2 and Figure 3, from top to bottom on standpipe 1 inside fusiformis cone sleeve 2
Pipe axial symmetry offers a pair of spiraling counterclockwise and rise diversion culvert and (spiral rise diversion culvert 1 and inverse counterclockwise staggeredly
Hour hands spiral rise diversion culvert 3 53), a pair of clockwise spiral staggeredly rises diversion culvert (clockwise spiral rises water conservancy diversion
Culvert 1 and clockwise spiral rise diversion culvert 3 63), a pair of spiraling rise diversion culvert (counterclockwise counterclockwise staggeredly
Spiral rise diversion culvert 2 52 and spiral counterclockwise rise diversion culvert 4 54), a pair of clockwise spiral staggeredly rises and leads
Culvert (clockwise spiral rises diversion culvert 2 62 and clockwise spiral rises diversion culvert 4 64) is flowed, four pairs of interleaved flows are contained
Hole position is uniformly distributed along 1 tube axial direction of standpipe.As shown in Figure 6, Figure 7, the outer surface of fusiformis cone sleeve 2 by up to
Under be laid with 4 fins 3, the length direction of fin 3 is axial arranged along standpipe 1, and 4 fins 3 are along 2 appearance of fusiformis cone sleeve
Face is 90 ° circumferentially spaced, and helically declines arrangement.As shown in Figure 4, Figure 5, bearing sets the inside and outside of cylindrical roller 8 for centre
Coil structures, bearing have two, and 1 outer wall of standpipe is installed on by one 2 height of fusiformis cone sleeve in interval.Two bearing outer rings 4
Outer wall is equipped with external screw thread, is engaged respectively with 2 cylindrical cavity of fusiformis cone sleeve, two end surfaces internal thread, makes fusiformis taper
Body sleeve 2 is connected as one with bearings at both ends outer ring 4, so that fusiformis cone sleeve 2 can be rotated around standpipe 1.
It can be provided in a kind of using the fusiformis cone vibration-repressing device that diversion culvert is set in described and set diversion culvert
Fusiformis cone vibration suppression method.After any direction incoming flow to fusiformis cone sleeve 2, due to 2 surface of fusiformis cone sleeve
There are 16 diversion culvert holes, incoming can be guided from different directions, current is flowed into and is flowed out along diversion culvert, formed along shuttle
The circumferential shear flow of 2 outer surface of shape cone sleeve, effectively upsets the Flow Field distribution of 1 surrounding of standpipe, destroys and stream
Boundary layer, it is suppressed that the Vortex Shedding at 1 back of standpipe.And since diversion culvert helically rises shape, different depth can be transferred
Current, disturbance is produced to the flow field at vertical different water depth, destroys the formation of three-dimensional vortex.Meanwhile fusiformis cone sleeve 2
Outer surface is coarse, and opposing connection laminar boundary layer, which is formed, to be destroyed, and is weakened wake flow vortex intensity, be further suppress vortex-induced vibration.In addition,
Water impact can produce impact force to fin 3, promote fusiformis cone sleeve 2 around vertical when on 4 fins 3 of screw arrangement
Pipe 1 rotates, and further adjusts Flow Field Distribution, realizes the suppression of vortex-induced vibration to a greater degree.In diversion culvert water conservancy diversion, fin 3
Drive fusiformis cone sleeve 2 rotate and the collective effect of rough surface under, realize the suppression of 1 vortex-induced vibration of standpipe.
Embodiment：
When device is installed, two bearings are installed on outside standpipe 1 by one 2 height of fusiformis cone sleeve in interval first
Wall, is then set in 1 outer wall of standpipe by fusiformis cone sleeve 2, and makes 2 cylindrical cavity of fusiformis cone sleeve, two end surfaces
External screw thread of the internal thread respectively with 4 outer wall of upper and lower two bearing outer rings engages, and fusiformis cone sleeve 2 is revolved around standpipe 1
Turn.
After installing, standpipe 1 is placed in seawater.After any direction incoming flow to fusiformis cone sleeve 2, due to shuttle
There are 16 diversion culvert holes on 2 surface of shape cone sleeve, can guide incoming from different directions, makes current along diversion culvert stream
Into with outflow, form the circumferential shear flow along 2 outer surface of fusiformis cone sleeve, effectively upset standpipe 1 surrounding and stream stream
Field distribution, destroys around laminar boundary layer, it is suppressed that the Vortex Shedding at 1 back of standpipe.And since diversion culvert helically rises shape,
The current of different depth can be transferred, disturbance is produced to the flow field at vertical different water depth, destroy the formation of three-dimensional vortex.Together
When, 2 outer surfaces of fusiformis cone sleeve are coarse, and opposing connection laminar boundary layer, which is formed, to be destroyed, and weakens wake flow vortex intensity, further suppression
Vortex-induced vibration is made.In addition, water impact when on 4 fins 3 of screw arrangement, can produce impact force to fin 3, promote shuttle
Shape cone sleeve 2 is rotated around standpipe 1, further adjusts Flow Field Distribution, realizes the suppression of vortex-induced vibration to a greater degree.Leading
Stream culvert water conservancy diversion, fin 3 drive fusiformis cone sleeve 2 rotate and the collective effect of rough surface under, realize 1 whirlpool of standpipe and swash
The suppression of vibration.
Claims (2)
1. the fusiformis cone vibration-repressing device of diversion culvert is set in a kind of, by fusiformis cone sleeve (2), fin (3) and bearing
Composition；The cylindrical cavity coaxial with its axis is provided with the middle part of fusiformis cone sleeve (2), fusiformis cone sleeve (2) passes through
Its cylindrical cavity is set in standpipe (1) outer wall；The outer surface of fusiformis cone sleeve (2) is from top to bottom laid with 4 fins
(3), the length direction of fin (3) is axial arranged along standpipe (1)；Bearing sets the inside and outside coil structures of cylindrical roller (8), axis for centre
Two have been held, standpipe (1) outer wall is highly installed on by the one fusiformis cone sleeve (2) in interval；It is characterized in that：The shuttle
It by central angle is circular arc that 35 ° of arc length are 18 times of standpipe (1) diameters around standpipe (1) axis that the outer surface of shape cone sleeve (2), which is,
To being rotated by 360 ° formed arc surface, and rough surface；The fusiformis cone sleeve (2) it is internal from top to bottom on
Standpipe (1) pipe axial symmetry offers a pair of spiraling rise diversion culvert, on a pair of clockwise spiral staggeredly counterclockwise staggeredly
Diversion culvert, a pair of rising diversion culvert of spiraling counterclockwise interlocked, a pair of clockwise spiral rising diversion culvert staggeredly are risen,
Four pairs of interleaved flow culvert positions are uniformly distributed along standpipe (1) tube axial direction；4 fins (3) are along fusiformis taper
Body sleeve (2) outer surface is 90 ° circumferentially spaced, and helically declines arrangement；Opened in the middle part of the fusiformis cone sleeve (2)
If cylindrical cavity inner wall both ends be equipped with internal thread, the bearing outer ring (4) outer wall is equipped with external screw thread, two bearings difference
Engaged with two end surfaces internal thread of fusiformis cone sleeve (2) cylindrical cavity, make fusiformis cone sleeve (2) and bearings at both ends
Outer ring (4) is connected as one, so that fusiformis cone sleeve (2) can be rotated around standpipe (1).
2. setting the fusiformis cone vibration suppression method of diversion culvert in a kind of, diversion culvert is set using interior as claimed in claim 1
Fusiformis cone vibration-repressing device, it is characterised in that：After any direction incoming flow to fusiformis cone sleeve (2), due to fusiformis
There are 16 diversion culvert holes on cone sleeve (2) surface, can guide incoming from different directions, makes current along diversion culvert stream
Into with outflow, form the circumferential shear flow along fusiformis cone sleeve (2) outer surface, effectively upset standpipe (1) surrounding around
Flow Field Distribution is flowed, is destroyed around laminar boundary layer, it is suppressed that the Vortex Shedding at standpipe (1) back；And due to diversion culvert helically
Rise shape, the current of different depth can be transferred, disturbance is produced to the flow field at vertical different water depth, destroy the shape of three-dimensional vortex
Into；Meanwhile fusiformis cone sleeve (2) outer surface is coarse, opposing connection laminar boundary layer, which is formed, to be destroyed, and weakens wake flow vortex intensity,
It further suppress vortex-induced vibration；In addition, water impact can produce fin (3) when on 4 fins (3) of screw arrangement
Impact force, promotes fusiformis cone sleeve (2) to be rotated around standpipe (1), further adjusts Flow Field Distribution, realize whirlpool to a greater degree
The suppression of excited vibration；In the common of diversion culvert water conservancy diversion, fin (3) drive fusiformis cone sleeve (2) rotation and rough surface
Under effect, the suppression of standpipe (1) vortex-induced vibration is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610846729.XA CN106284265B (en) | 2016-09-26 | 2016-09-26 | The fusiformis cone vibration-repressing device and method of diversion culvert are set in a kind of |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610846729.XA CN106284265B (en) | 2016-09-26 | 2016-09-26 | The fusiformis cone vibration-repressing device and method of diversion culvert are set in a kind of |
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| Publication Number | Publication Date |
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| CN106284265A CN106284265A (en) | 2017-01-04 |
| CN106284265B true CN106284265B (en) | 2018-05-04 |
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| CN201610846729.XA Expired - Fee Related CN106284265B (en) | 2016-09-26 | 2016-09-26 | The fusiformis cone vibration-repressing device and method of diversion culvert are set in a kind of |
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| CN109281621B (en) * | 2018-10-06 | 2020-01-03 | 西南石油大学 | Vibration suppression strake rotary power generation and corrosion prevention device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2445751A (en) * | 2007-01-17 | 2008-07-23 | Trelleborg Crp Ltd | Buoyancy module clamp with vortex tripping features for a riser |
| CN102207118A (en) * | 2011-05-26 | 2011-10-05 | 中国海洋石油总公司 | Pod-type vortex-induced vibration suppression device |
| CN203515367U (en) * | 2013-10-23 | 2014-04-02 | 西南石油大学 | Rotatable shuttle fairing type marine riser vortex-induced vibration suppression device |
| CN204716147U (en) * | 2015-05-28 | 2015-10-21 | 西南石油大学 | A kind of riser vortex induced vibration suppression device of interlaced helical Tube Drain |
-
2016
- 2016-09-26 CN CN201610846729.XA patent/CN106284265B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2445751A (en) * | 2007-01-17 | 2008-07-23 | Trelleborg Crp Ltd | Buoyancy module clamp with vortex tripping features for a riser |
| CN102207118A (en) * | 2011-05-26 | 2011-10-05 | 中国海洋石油总公司 | Pod-type vortex-induced vibration suppression device |
| CN203515367U (en) * | 2013-10-23 | 2014-04-02 | 西南石油大学 | Rotatable shuttle fairing type marine riser vortex-induced vibration suppression device |
| CN204716147U (en) * | 2015-05-28 | 2015-10-21 | 西南石油大学 | A kind of riser vortex induced vibration suppression device of interlaced helical Tube Drain |
Non-Patent Citations (1)
| Title |
|---|
| "深海立管涡激振动被动抑制措施的研究";吴浩等;《中国海洋平台》;20090831;第24卷(第4期);第1-8页 * |
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| CN106284265A (en) | 2017-01-04 |
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