CN104154333B - A kind of submarine pipeline suppressing vortex-induced vibration - Google Patents
A kind of submarine pipeline suppressing vortex-induced vibration Download PDFInfo
- Publication number
- CN104154333B CN104154333B CN201410269528.9A CN201410269528A CN104154333B CN 104154333 B CN104154333 B CN 104154333B CN 201410269528 A CN201410269528 A CN 201410269528A CN 104154333 B CN104154333 B CN 104154333B
- Authority
- CN
- China
- Prior art keywords
- circle
- circular arc
- radius
- center
- section
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/006—Rigid pipes specially profiled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
Abstract
The present invention discloses a kind of submarine pipeline suppressing vortex-induced vibration, formed through central axial upper spiral stretch vertically by lower end of duct cross section, the external boundary of lower end cross section is that six sections of 60 ° of circular arcs tangentially join end to end and form, six sections of 60 ° of circular arcs are circular arc a, b, c, d, e, f by dextrorotation to sequentially, the center of circle O of circular arc a1, the center of circle O of circular arc c2, the center of circle O of circular arc e3Three line segment lengths between down cross-sectional central point O are equal, and the angle between three line segments is 120 °, with R=O1O2+O1A is that radius makees circle and circle O2, circle O3Tangent, O1A is circular arc a radius, and between points of tangency, circular arc is circular arc d, with O2For the center of circle, make circle and circle O with radius R1, circle O3Tangent, between points of tangency, circular arc is circular arc f, with O3For the center of circle, the round and circle O with radius R for work1, circle O2Tangent, between points of tangency, circular arc is circular arc b；Insensitive to carrying out flow path direction, anti-current intensity and press down the excellent performance that shakes.
Description
Technical field
The invention belongs to underwater facility laying technology field, be specifically related to a kind of pipeline suppressing vortex-induced vibration under water.
Background technology
The system such as offshore oil production, exploration has numerous slender pipeline (or pipeline) works, in order to fixed platform and conveying
Fuel oil etc., requisite works when being ocean engineering ship or ocean platform operation.The cross sectional shape of these pipelines is many
For circle, such as production riser and natural gas line etc., the long-term submergence of these pipelines in the seawater, subjects the effect of current,
And current produce whirlpool because pressure distribution is uneven in flow process, the formation of whirlpool and the induction that comes off produce pipeline and produce
Vortex-induced vibration phenomenon.When vortex shedding frequency is close or equal to pipeline natural frequency, the vibration of pipeline is strengthened, taking off of whirlpool
The process that falls will be had the shedding frequence identical with structural vibration frequency by structural vibration control, produces " locking " phenomenon so that it is
Being in high-stress state, aggravation pipeline is tired, particularly with the pipeline that the slenderness ratio of flexible piping is the biggest, it may occur that serious change
Shape distorts, and is substantially reduced pipeline service life.
At present, general employing suppressing method suppression pipeline vortex-induced vibration phenomenon, it is divided into active suppression and quilt by suppression principle
Dynamic suppression two classes.Active suppression refers to come into operation period artificially or by design motivation or actuation means actively at pipeline
Upset flow field, control flow field vortex shedding pattern to reach the purpose of suppression vibration.But in actual use, cost is very big,
Operation is difficult to implement.Passive suppression refers to be not required to external impetus energy and control in real time, but add attached can disturbing flow device control
Whirlpool generating mode processed, destroy whirlpool evolution, conventional device have trousers, demarcation strip, spiral side plate, axial lath,
Control bars etc., but added cost, extra installation difficulty, wherein, spiral side plate is as periphery projection restraining device, logical
Cross unmixing base or defiber, upset vortex shedding tail flow field, and because it has isotropism, adapt to sea complicated and changeable
Ocean environment.But due to the existence of spiral side plate increase standpipe fluoran stream surface amass, cause along flow to resistance increase.In addition its peace
Dress and control require higher.
Theoretical, if the cross sectional shape of object is streamlined, when viscous fluid flows through body surface according to Classical Fluid Mechanics
Do not have the phenomenon that digresses from the subject of boundary region, the probability that vortex shedding occurs can be significantly reduced.Based on this principle, work as pipe
When road profile is streamlined, the effect of suppression vortex-induced vibration will be greatly enhanced.
Summary of the invention
The invention aims to preferably suppress pipeline vortex-induced vibration phenomenon, according to Classical Fluid Mechanics principle, carry
The screw type submarine pipeline that can effectively suppress any direction to flow is become, it is not necessary to additionaling power or manipulation dress for a kind of monnolithic case
Put and attached can disturbing flow device.
The technical solution used in the present invention is: the present invention by the lower end cross section of pipeline vertically through central axial upper spiral
Stretching forms, and the external boundary of lower end cross section is that six sections of 60 ° of circular arcs tangentially join end to end and form, and six sections of 60 ° of circular arcs are by clockwise
It is sequentially circular arc a, b, c, d, e, f that rotation direction is arranged, the center of circle O of circular arc a1, the center of circle O of circular arc c2, the center of circle O of circular arc e3Under to
Three line segment lengths between cross-section center point O are equal, and the angle between three line segments is, with R=O1O2+ O1A is
Radius makees circle and circle O2, circle O3Tangent, with circle O2With circle O3Circular arc between points of tangency is circular arc d, O1A is circular arc a
Radius；With O2For the center of circle, make circle and circle O with radius R1, circle O3Tangent, with circle O1, circle O3Circular arc between points of tangency is
Circular arc f；With O3For the center of circle, the round and circle O with radius R for work1, circle O2Tangent, with circle O1, circle O2Circular arc between points of tangency is i.e.
For circular arc b.
Present configuration is simple, whole for single spirillum, insensitive to carrying out flow path direction, and cross section fairing is streamline
Type, carrys out stream and is respectively provided with inhibition of vibration any direction, anti-current intensity and press down the excellent performance that shakes, and can improve service life；It is not required to borrow
Help external vibration-repressing device, eliminate extra installation, provide cost savings.
Accompanying drawing explanation
With detailed description of the invention, the present invention is described in further details below in conjunction with the accompanying drawings.
Fig. 1 is the perspective view that the present invention can suppress the submarine pipeline of vortex-induced vibration；
Fig. 2 is the structure enlarged diagram of lower end of duct cross section；
Fig. 3 is that the cross-sectional structure of Fig. 2 generates schematic diagram.
Detailed description of the invention
As it is shown in figure 1, the submarine pipeline that the present invention can suppress vortex-induced vibration has a style of one's own, for single individuality, by pipeline
Lower end cross section forms along the axial of pipeline through central axial upper spiral stretch, and the shape of the upper end cross section of pipeline is horizontal with lower end
The shape in cross section is identical.
As shown in Figures 2 and 3, the external boundary of lower end or upper end cross section is that six sections of 60 ° of circular arcs tangentially join end to end and form,
Peripheral smooth smoothness, these six sections of 60 ° of circular arcs are sequentially circular arc a, b, c, d, e, f by dextrorotation to arranging.
If Fig. 3, circular arc a are at circle O1On, the center of circle is O1, radius is O1A, circular arc c, e are respectively at circle O2, circle O3On, circular arc c,
The center of circle of e is respectively O2 、O3.Center of circle O1 、O2 、O3And connect into three line segments, three length along path between cross-section center point O
Spend equal, i.e. line segment OO1= OO2 =OO3, three line segment OO1、OO2、OO3Between angle be, i.e..Connect the center of circle O of three circles1 、O2 、O3Form equilateral triangle O1 O2
O3。
As it is shown on figure 3, with O1For the center of circle, with R=O1O2+ O1A is that radius is justified, made circle i.e. with circle O2, circle O3It is tangent,
With circle O2With circle O3Circular arc between points of tangency is circular arc d, circular arc d and is positioned at center of circle O1Right opposite；Equally, with O2For
The center of circle, with identical R=O1O2+ O1A is that radius is justified, and is made circle and circle O1, circle O3Tangent, with circle O1, circle O3Points of tangency
Between circular arc be circular arc f, with O3For the center of circle, with identical R=O1O2+ O1A is that radius is justified, and is made circle and circle O1, circle O2
Tangent, with circle O1, circle O2Circular arc between points of tangency is circular arc b.Such that form inventive pipeline lower end or upper end
The external boundary of cross section.Radius R and radius O1The radius ratio of A is 2-15.
Radius R is the radius of pipeline, the maximum distance of distance center point O on the radius of the pipeline i.e. external boundary of pipeline.Pipe
The pitch in road is 5-40 times of radius R.
If the present invention has interior stream as marine riser etc., then pipeline is hollow pipe, and the middle of cross section has one
Radius is the circle of r, and radius r is less than radius R, radius be the central point of the circle of r be O point, i.e. internal is circular,,
The wall thickness of hollow pipe is R-r, depending on wall thickness can be according to concrete fluid environment；If the present invention is only as pipeline, then pipeline is real
Heart body.Depending on the axial overall length of the present invention is according to concrete applied environment.
When the present invention works, current flow through from the non-homogeneous streamlined outer surface of pipeline, and pipeline each several part is due to surface shape
It is different that shape affects stress, and the separation on each several part border is inconsistent, and then affects coming off of eddy current in tail flow field, makes tail flow field not
Effective vortex-induced vibration can be formed.Additionally, due to the feature of the screw type of the present invention, insensitive to direction, i.e. to any direction
Come stream can act as suppress vortex-induced vibration effect, when have flow time, be not required to by external restraining device, i.e. outside himself
Shape just can destroy torrent field, whirlpool so that it is can not form effective vortex-induced vibration.
Claims (5)
1. can suppress a submarine pipeline for vortex-induced vibration, it is characterized in that: by the lower end cross section of pipeline vertically through central shaft
Upwards spiral stretch forms, and the external boundary of lower end cross section is that six sections of 60 ° of circular arcs tangentially join end to end and form, six sections of 60 ° of circular arcs
By dextrorotation to arrange be sequentially circular arc a, b, c, d, e, f, the center of circle O of circular arc a1, the center of circle O of circular arc c2, the circle of circular arc e
Heart O3Three line segment lengths between lower end cross-section center point O are equal, and the angle between three line segments is；With O1
For the center of circle, with R=O1O2+ O1A is that radius makees circle and circle O2 , circle O3Tangent, with circle O2With circle O3Circular arc between points of tangency is
Circular arc d, O1A is the radius of circular arc a；With O2For the center of circle, make circle and circle O with radius R1, circle O3Tangent, with circle O1, circle O3Phase
Circular arc between point of contact is circular arc f；With O3For the center of circle, make circle and circle O with radius R1, circle O2Tangent, with circle O1, circle O2Tangent
Circular arc between point is circular arc b.
A kind of submarine pipeline suppressing vortex-induced vibration, is characterized in that: radius R and radius O1A it
Ratio is 2-15.
A kind of submarine pipeline suppressing vortex-induced vibration, is characterized in that: the pitch of spiral stretch is
5-40 times of radius R.
A kind of submarine pipeline suppressing vortex-induced vibration, is characterized in that: the center of lower end cross section
Between have a radiusCircle.
A kind of submarine pipeline suppressing vortex-induced vibration, is characterized in that: the upper end cross section of pipeline
Shape identical with the shape of lower end cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269528.9A CN104154333B (en) | 2014-06-18 | 2014-06-18 | A kind of submarine pipeline suppressing vortex-induced vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269528.9A CN104154333B (en) | 2014-06-18 | 2014-06-18 | A kind of submarine pipeline suppressing vortex-induced vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154333A CN104154333A (en) | 2014-11-19 |
| CN104154333B true CN104154333B (en) | 2016-08-10 |
Family
ID=51879907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410269528.9A Expired - Fee Related CN104154333B (en) | 2014-06-18 | 2014-06-18 | A kind of submarine pipeline suppressing vortex-induced vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154333B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555559B (en) * | 2020-11-24 | 2022-04-26 | 江苏大学 | Non-uniform incoming flow suppression device at pump inlet |
| CN113529639B (en) * | 2021-07-22 | 2022-08-02 | 西南石油大学 | Vertical pipe vibration suppression device and method for combined rotation of strake and impeller in mesh enclosure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5367971A (en) * | 1992-03-12 | 1994-11-29 | Australian Sonar Systems Pty Ltd. | Towed acoustic array |
| GB2335248A (en) * | 1998-03-07 | 1999-09-15 | Crp Group Ltd | Vortex shedding claddings for submerged tubulars |
| CN101216138A (en) * | 2007-12-28 | 2008-07-09 | 天津大学 | Submarine pipeline vortex-induced vibration inhibiting method |
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2411220C (en) * | 2002-06-28 | 2010-11-16 | Lubomyr M. Cymbalisty | Hydro-dynamic static mixing apparatus and method for use thereof in separating oil sands and the like |
-
2014
- 2014-06-18 CN CN201410269528.9A patent/CN104154333B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5367971A (en) * | 1992-03-12 | 1994-11-29 | Australian Sonar Systems Pty Ltd. | Towed acoustic array |
| GB2335248A (en) * | 1998-03-07 | 1999-09-15 | Crp Group Ltd | Vortex shedding claddings for submerged tubulars |
| CN101216138A (en) * | 2007-12-28 | 2008-07-09 | 天津大学 | Submarine pipeline vortex-induced vibration inhibiting method |
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154333A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105117564B (en) | A kind of the pump-jet propulsor hydraulic model and its design method of stator before rotor circumferential direction asymmetric arrangement | |
| CN104154333B (en) | A kind of submarine pipeline suppressing vortex-induced vibration | |
| CN104712266B (en) | A kind of active and passive control synergistic standpipe equipment for inhibiting of vibration and method | |
| CN103485732A (en) | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade | |
| CN207004441U (en) | A kind of surface sets screw slotting and raised standpipe vortex-induced vibration suppression device | |
| Lee et al. | Application of a boundary element method in the prediction of unsteady blade sheet and developed tip vortex cavitation on marine propellers | |
| JP2017508920A (en) | Hydrodynamic energy conversion system and use thereof | |
| CN102865044A (en) | Imitated aerofoil adaptive vortex-induced vibration suppression and resistance reduction device for underwater riser | |
| CN108194035B (en) | Device and method for suppressing vortex-induced vibration of marine riser | |
| CN110145254A (en) | A kind of standpipe vortex-induced vibration suppression device | |
| Xia et al. | Using spanwise flexibility of caudal fin to improve swimming performance for small fishlike robots | |
| CN105604500A (en) | Underwater riser vortex-induced vibration abatement device | |
| CN102046461B (en) | Cruciform tail control surfaces of undersea vehicle | |
| Wang et al. | Experiment on the characteristics of 3-D vortex ring behind a flexible oscillating caudal fin | |
| EP3314083B1 (en) | A flow modification device, system, and method | |
| Ghasseni et al. | Numerical analysis of the high skew propeller of an underwater vehicle | |
| JP2007331549A (en) | Stern duct and ship with the same attached | |
| CN208325593U (en) | A kind of antiwind rudder blade of energy-saving and noise-reducing | |
| CN108482629A (en) | A kind of kuppe for Autonomous Underwater Vehicle | |
| Kaidong et al. | Shape design and flow field characteristics of a robotic fish imitating the head of a hammerhead | |
| CN203666950U (en) | Marine propeller | |
| CN105626350B (en) | Using the francis turbine runner of groove drag reduction | |
| CN103453276A (en) | Vortex-induced vibration suppression device with tail rotor rotatable separating disc and method | |
| US9637205B1 (en) | Curved surfboard fin | |
| Zhao et al. | Vortex dynamic analysis of unsteady cavitating flows around a hydrofoil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20190618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |