CN102943634A - Free-rotation impeller device for inhibiting eddy induced vibration of marine riser - Google Patents
Free-rotation impeller device for inhibiting eddy induced vibration of marine riser Download PDFInfo
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- CN102943634A CN102943634A CN2012104605201A CN201210460520A CN102943634A CN 102943634 A CN102943634 A CN 102943634A CN 2012104605201 A CN2012104605201 A CN 2012104605201A CN 201210460520 A CN201210460520 A CN 201210460520A CN 102943634 A CN102943634 A CN 102943634A
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Abstract
The invention relates to a free-rotation impeller device for inhibiting eddy induced vibration of a marine riser. The free-rotation impeller device consists of a plurality of basic elements, wherein the basic elements are serially connected along the axis direction of the marine riser, each basic element comprises two rotary modules and an impeller module, each rotary module consists of an inner circle, a cylindrical roller and an outer circle, the impeller module is a whole body consisting of a sleeve and impeller blades and is processed by a plastic die, the upper end and lower end of the impeller module are respectively provided with one rotary module, the impeller module is sheathed on the outer circle of each rotary module, the inner circle of each rotary module and the marine riser are tightened and connected by a bolt, and the impeller module freely rotates around the marine riser by the rotary modules. The free-rotation impeller device has the advantages that the structure is simple, the performance is reliable, the on-site installation is convenient, the free rotation is realized, the eddy induced vibration caused by flows from any direction can be effectively inhibited, and the influence on the fatigue life of the marine riser is reduced.
Description
Technical field
The invention belongs to marine riser facility laying technology field, be specifically related to a kind of rotated freely impeller unit that suppresses vortex-induced vibration of marine riser.
Background technology
The high speed development of national economy, demand increasingly significant to oil, gradually depletion along with Land petroleum, exploitation exploitation marine oil and gas has become inevitable demand energetically, marine riser is the important component part of marine oil and gas drilling, be the vitals of connected floating offshore boring island and subsea production system, the reliability of its military service is significant for the safe operation of oil gas drilling.Marine riser ambient conditions of living in is abominable, stressed complexity.Especially when wave, ocean current are flowed through standpipe, will form at the standpipe rear whirlpool, the vortex-induced vibration of standpipe has been brought out in the formation of whirlpool and come off and changed the velocity flow profile at standpipe rear.When the vortex shedding frequency approaches or equals a certain intrinsic frequency of marine riser, Oscillation Amplitude will sharply increase, and accelerate the fatigue failure of standpipe.In case standpipe generation fatigue failure not only causes marine serious accident, causes huge economic loss, also will cause catastrophic destruction to marine environment.
The fatigue failure degree that marine riser is caused in order to reduce vortex-induced vibration, existing method is normally installed vortex-induced vibration suppression device at standpipe, change the shape on standpipe surface, reach the purpose of flow-disturbing, and then near the Flow Field Distribution the change standpipe, slacken the periodicity whirlpool to the active force of standpipe.Existing vortex-induced vibration of marine riser restraining device mainly contains the fixedly forms such as radome fairing, control lever, spiral strake, O type circle, commutator segment, insert row floating block, separator disk ribbon and projection.Yet what most of vortex-induced vibration suppression devices adopted is directly fixing mode, can not tackle the change at random of wave, current direction.If these devices can rotate, the flow-disturbing effect will be more remarkable, and the vortex-induced vibration inhibition also can promote greatly.At present only have public notification period patent CN 102071883 A(to adopt the submerged riser vortex-induced vibration suppression device of rotatable radome fairing) and the submerged riser vortex-induced vibration device of the imitative fishtail type radome fairing of patent CN 102134972 A() in the device mentioned can realize rotation around standpipe, but still be subject to the restriction of incoming flow angle, can not tackle arbitrarily angled incoming flow fully.
Summary of the invention
It is the deficiency that exists for existing vortex-induced vibration of marine riser restraining device that the present invention will deal with problems, provide a kind of simple in structure, dependable performance, the scene is easy for installation, and can tackle the rotated freely impeller unit of the establishment vortex-induced vibration of marine riser that comes arbitrarily flow path direction.
To achieve these goals, the present invention adopts following technical scheme:
A kind of rotated freely impeller unit that suppresses vortex-induced vibration of marine riser is combined by the coastal foreign standpipe axis direction tandem of a plurality of elementary cells, and described elementary cell is comprised of rotary module and impeller module again.Rotary module comprises inner ring, cylindrical roller, outer ring.Inner ring is comprised of two semi-ring steel components of symmetry, its external surface processing column roller groove, and inner ring is enclosed within on the marine riser from both sides, uses bolt to connect between two semi-rings.The cylindrical roller groove is half-terete groove, and cylindrical roller is positioned in the cylindrical roller groove of inner ring.The outer ring also is comprised of two semi-ring steel components of symmetry, within it the upper processing column roller annular groove in surface.Outer ring sleeve places in the cylindrical roller annular groove cylindrical roller in the inner ring outside, uses bolt to connect between two semi-rings, and limits the axial slip of outer ring by the axial retention sheet.The impeller module comprises sleeve and impeller blade, and it is molded that sleeve and impeller blade are that integral body adds, and sleeve is coaxial with marine riser.Sleeve has 3 impeller blades outward, becomes 120 ° and is evenly distributed on the sleeve, and impeller blade is arc-shaped curved surface.The impeller module directly is sleeved on the outer ring of rotary module, each equipped rotary module of the up and down two ends of each impeller module.
The present invention also comprises:
1, the inner ring internal diameter of rotary module equals the marine riser outer diameter D, and thickness is got 0.06D to 0.09D, and the inner ring height is 0.12D to 0.16D; Rotary module outer ring thickness is got 0.06D to 0.09D.
2, the sleeve of impeller module and impeller blade are as a whole, by the moulding of mould of plastics time processing; Sleeve thickness is 0.02D to 0.04D, highly gets 2D to 4D; The radius of curvature of the impeller blade curved surface of impeller module is got 1D to 1.5D, and the arc length of impeller blade is got 0.2D to 0.35D.
The present invention is owing to take above technical scheme, and it has the following advantages:
1, the present invention can realize rotating freely, and can avoid forming periodically whirlpool at the marine riser rear, effectively slows down the vortex-induced vibration that difference comes flow path direction to cause, and adapts to the ocean actual environment that flows to frequent change at random, greatly improves marine riser fatigue life;
2, sleeve of the present invention and impeller blade are as a whole, are set in the outer ring external surface of rotary module, install simple; The material of sleeve and impeller blade is plastics, can significantly reduce cost, and simplified manufacturing technique, and not perishable and damage can be reused;
3, the present invention can freely adjust the distance between each elementary cell according to on-site actual situations, to reach optimal inhibition effect.
Description of drawings
Fig. 1 is apparatus of the present invention perspective view
Fig. 2 is inner ring and the single cylindrical roller perspective view of apparatus of the present invention rotary module
Fig. 3 is the outer ring perspective view of apparatus of the present invention rotary module
Fig. 4 is apparatus of the present invention rotary module perspective view
Fig. 5 is apparatus of the present invention impeller module perspective view
Wherein: 1. marine riser; 2. inner ring; 3. outer ring; 4. axial retention sheet; 5. sleeve; 6. impeller blade; 7. cylindrical roller groove; 8 bolts; 9. cylindrical roller; 10. cylindrical roller annular groove.
The specific embodiment
Below in conjunction with accompanying drawing implementation of the present invention is further described.
The present invention is that the coastal foreign standpipe axis direction tandem of a plurality of elementary cells combines, and such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, an elementary cell of the present invention comprises two rotary modules and an impeller module.
Wherein rotary module comprises inner ring 2, cylindrical roller 9, outer ring 3.Inner ring 2 is comprised of two semi-ring steel components of symmetry, its external surface processing column roller groove 7.Cylindrical roller groove 7 is half-terete groove.Cylindrical roller 9 is positioned in the cylindrical roller groove 7.Inner ring 2 is enclosed within on the marine riser 1 from both sides, uses bolt 8 to be connected and fixed between two semi-rings.Outer ring 3 also is comprised of two semi-ring steel components of symmetry, up and down two end faces of outer ring 3 each semi-ring stretch out two axial retention sheets 4, install the axial slip of rear outer ring 3 with the restricting rotation module, and leave certain slit between two axial ends of axial retention sheet 4 and inner ring 2, the friction when rotating to reduce.Outer ring 3 inner surface processing column roller annular grooves 10, outer ring 3 is enclosed within inner ring 2 outsides, and cylindrical roller 9 is placed in the cylindrical roller annular groove 10, uses bolt 8 to connect between two semi-rings, and connecting rear rotary module can freely rotate around the axis of marine riser 1.
Two semi-ring project organizations are separately all adopted in the inner ring 2 of rotary module and outer ring 3, are convenient to on-the-spot installation and removal.Inner ring 2 internal diameters of rotary module equal marine riser 1 outer diameter D, and thickness is got 0.06D to 0.09D, and inner ring 2 highly is 0.12D to 0.16D; Outer ring 3 thickness of rotary module are got 0.06D to 0.09D.Rotary module adopts the structure design advantage of cylindrical roller 9 to be, precision is high, wearing and tearing are little, the life-span is long, can be within the long time retainer shaft to installation accuracy, the realization of assurance impeller module is freely rotated.
The impeller module is comprised of sleeve 5 and impeller blade 6, and sleeve 5 and impeller blade 6 are as a whole, by the moulding of mould of plastics time processing; Sleeve 5 is cylindrical structure, and its internal diameter equals outer ring 3 external diameters of rotary module, and sleeve 5 thickness are got 0.02D to 0.04D, highly get 2D to 4D, and sleeve 5 is coaxial with marine riser 1.3 impeller blades 6 are arranged outside sleeve 5, become 120 ° and be evenly distributed on the sleeve 5, impeller blade 6 is arc-shaped curved surface, and the arc length of impeller blade 6 is got 0.25D to 0.4D, the radius of curvature of impeller blade 6 curved surfaces is got 1D to 1.5D, and the thickness of impeller blade 6 is identical with the thickness of sleeve 5.In the marine riser 1 corresponding upper and lower side position that single impeller module is installed a rotary module is installed all, then sleeve 5 is set in up and down outer ring 3 external surfaces of two rotary modules.The impeller module can realize freely rotating around marine riser 1 by rotary module.
The marine riser under water common supreme km of hundreds of does not wait, and in order to ensure inhibition, can every 2D to 4D an elementary cell be installed on marine riser 1, can carry out suitable spacing adjustment according to actual conditions yet, makes inhibition reach best.
Embodiment:
According to the long-term statistical information of the slenderness ratio of actual marine riser 1 and local ocean wave, ocean current, elementary cell spacing reasonable in design calculates the elementary cell number n that needs, and namely the rotary module number is 2n, and the impeller number of modules is n.
When single elementary cell is installed, at first, at the correct position of marine riser 1 rotary module is installed, the inner ring 2 that is about to rotary module is sleeved on the external surface of marine riser 1 from both sides, be connected and fixed by bolt 8; After fixing inner ring 2, cylindrical roller 9 is positioned in the cylindrical roller groove 7 of inner ring 2 external surfaces; Then the outer ring 3 of rotary module is sleeved on inner ring 2 outsides from both sides, and so that cylindrical roller 9 places in the cylindrical roller annular groove 10, re-uses bolt 8 and be connected and fixed.Then, another rotary module is installed in the position of sleeve pipe of spacing 5 height on marine riser 1, and installation steps are identical with the installation steps of previous rotary module.After two rotary modules all install, the impeller module directly is sleeved on outer ring 3 external surfaces of two rotary modules.So far, installation an elementary cell.Subsequently, according to same erection sequence tandem remaining elementary cell is installed.
After device installs, marine riser 1 is placed seawater.In the seawater of different depth, each elementary cell can according to correspondence come flow path direction and flow velocity size, by the cooperation of cylindrical roller 9 and cylindrical roller annular groove 10, realize the rotation in various degree of impeller module, thereby the whirlpool that destroys marine riser 1 rear forms, and farthest suppresses vortex-induced vibration.
Claims (3)
1. a rotated freely impeller unit that suppresses vortex-induced vibration of marine riser is combined by the coastal foreign standpipe axis direction tandem of a plurality of elementary cells, it is characterized in that described elementary cell is comprised of rotary module and impeller module again; Rotary module comprises inner ring (2), cylindrical roller (9), outer ring (3); Inner ring (2) is comprised of two semi-ring steel components of symmetry, its external surface processing column roller groove (7), and inner ring (2) is enclosed within on the marine riser (1) from both sides, uses bolt (8) to connect between two semi-rings; Cylindrical roller groove (7) is half-terete groove, and cylindrical roller (9) is positioned in the cylindrical roller groove (7) of inner ring (2); Outer ring (3) also is comprised of two semi-ring steel components of symmetry, within it the upper processing column roller annular groove (10) in surface; Outer ring (3) is enclosed within inner ring (2) outside, and cylindrical roller (9) is placed in the cylindrical roller annular groove (10), uses bolt (8) to connect between two semi-rings, and limits the axial slip of outer ring (3) by axial retention sheet (4); The impeller module comprises sleeve (5) and impeller blade (6), and sleeve (5) and impeller blade (6) are molded for integral body adds, and sleeve (5) is coaxial with marine riser (1); Sleeve (5) is outer 3 impeller blades (6), becomes 120 ° to be evenly distributed on the sleeve (5), and impeller blade (6) is arc-shaped curved surface; The impeller module directly is sleeved on the outer ring (3) of rotary module, each equipped rotary module of the up and down two ends of each impeller module.
2. a kind of impeller unit that rotates freely that suppresses vortex-induced vibration of marine riser as claimed in claim 1, it is characterized in that, the inner ring of described rotary module (2) internal diameter equals marine riser (1) outer diameter D, and thickness is got 0.06D to 0.09D, and inner ring (2) highly is 0.12D to 0.16D; Rotary module outer ring thickness is got 0.06D to 0.09D.
3. a kind of impeller unit that rotates freely that suppresses vortex-induced vibration of marine riser as claimed in claim 1 is characterized in that the sleeve of described impeller module (5) and impeller blade (6) are as a whole, by the moulding of mould of plastics time processing; Sleeve thickness is 0.02D to 0.04D, highly gets 2D to 4D; The radius of curvature of the impeller blade of impeller module (6) curved surface is got 1D to 1.5D, and the arc length of impeller blade (6) is got 0.2D to 0.35D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104605201A CN102943634A (en) | 2012-11-16 | 2012-11-16 | Free-rotation impeller device for inhibiting eddy induced vibration of marine riser |
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| CN2012104605201A CN102943634A (en) | 2012-11-16 | 2012-11-16 | Free-rotation impeller device for inhibiting eddy induced vibration of marine riser |
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| CN2012104605201A Pending CN102943634A (en) | 2012-11-16 | 2012-11-16 | Free-rotation impeller device for inhibiting eddy induced vibration of marine riser |
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| CN103306613A (en) * | 2013-06-25 | 2013-09-18 | 西南石油大学 | Vortex-induced vibration inhibition device for marine riser of adjustable and rotatable separating disk |
| CN103437717A (en) * | 2013-09-16 | 2013-12-11 | 西南石油大学 | Rotatable pentagonal impeller type vortex-induced vibration inhibiting device and method |
| CN103437718A (en) * | 2013-09-16 | 2013-12-11 | 西南石油大学 | Pendulum bob type vortex-induced vibration suppression device and method capable of rotating after being impacted |
| CN103453276A (en) * | 2013-09-13 | 2013-12-18 | 西南石油大学 | Vortex-induced vibration suppression device with tail rotor rotatable separating disc and method |
| CN103485731A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
| CN103485733A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotatable hexangular impeller with openings |
| CN104048551A (en) * | 2014-06-17 | 2014-09-17 | 上海理工大学 | Disturbing device for weakening eddy phenomenon of watering disc of cooling tower |
| CN104179183A (en) * | 2014-08-29 | 2014-12-03 | 浙江海洋学院 | Recyclable protecting device for inhibiting vortex-induced vibration of deepwater steel pipe pile |
| 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 |
| CN105201420A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Active vortex-induced vibration suppression device |
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| WO2018002643A1 (en) * | 2016-06-30 | 2018-01-04 | Trelleborg Offshore Uk Ltd | Roller |
| CN108533188A (en) * | 2018-02-02 | 2018-09-14 | 佛山科学技术学院 | A kind of vortex-induced vibration of marine riser restraining device |
| CN108571497A (en) * | 2017-03-08 | 2018-09-25 | 中国科学院力学研究所 | A kind of vortex-induced vibration suppression device |
| CN108679357A (en) * | 2018-05-13 | 2018-10-19 | 西南石油大学 | A kind of magnetic force swing is shaken restraining device and method with the whirlpool that water conservancy diversion rotation is combined |
| CN110792658A (en) * | 2019-10-29 | 2020-02-14 | 江苏科技大学 | Marine magnetic suspension vortex-induced vibration suppression device |
| CN112145857A (en) * | 2020-08-14 | 2020-12-29 | 海洋石油工程股份有限公司 | Vortex-induced vibration suppression device for marine flexible riser |
| CN112796676A (en) * | 2021-02-20 | 2021-05-14 | 西南石油大学 | Bionic fish-shaped marine riser bypass flow control and vibration suppression device and method |
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| CN102134972A (en) * | 2010-12-31 | 2011-07-27 | 上海交通大学 | Device for inhibiting vortex-induced vibration of underwater standpipe of fish-tail imitating cowling |
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| CN102071883A (en) * | 2010-12-03 | 2011-05-25 | 上海交通大学 | Underwater stand pipe vortex induced vibration inhibiter adopting rotatable cowling |
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| CN103306613A (en) * | 2013-06-25 | 2013-09-18 | 西南石油大学 | Vortex-induced vibration inhibition device for marine riser of adjustable and rotatable separating disk |
| CN103453276A (en) * | 2013-09-13 | 2013-12-18 | 西南石油大学 | Vortex-induced vibration suppression device with tail rotor rotatable separating disc and method |
| CN103437717A (en) * | 2013-09-16 | 2013-12-11 | 西南石油大学 | Rotatable pentagonal impeller type vortex-induced vibration inhibiting device and method |
| CN103437718A (en) * | 2013-09-16 | 2013-12-11 | 西南石油大学 | Pendulum bob type vortex-induced vibration suppression device and method capable of rotating after being impacted |
| CN103485731A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
| CN103485733A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotatable hexangular impeller with openings |
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| CN104179183A (en) * | 2014-08-29 | 2014-12-03 | 浙江海洋学院 | Recyclable protecting device for inhibiting vortex-induced vibration of deepwater steel pipe pile |
| 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 |
| CN105201420B (en) * | 2015-10-13 | 2017-03-22 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN105201420A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN106930705A (en) * | 2016-04-01 | 2017-07-07 | 山东科技大学 | A kind of standpipe vortex-induced vibration Omnidirectional rotation turbine flow-disturbing vibration-repressing device |
| CN105863526B (en) * | 2016-06-22 | 2017-12-12 | 西南石油大学 | One kind can revolve flexible tail swing formula standpipe vortex-induced vibration suppression device and method |
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| WO2018002643A1 (en) * | 2016-06-30 | 2018-01-04 | Trelleborg Offshore Uk Ltd | Roller |
| US20190264833A1 (en) * | 2016-06-30 | 2019-08-29 | Trelleborg Offshore Uk Ltd | Roller |
| CN106437544A (en) * | 2016-09-23 | 2017-02-22 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotary and detachable S-shaped strake |
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| CN106223867A (en) * | 2016-09-23 | 2016-12-14 | 西南石油大学 | A kind of riser systems structural parameters that regulate avoid the device and method of Vortex-excited vibration |
| 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 |
| CN106285511A (en) * | 2016-09-27 | 2017-01-04 | 西南石油大学 | A kind of compound disturbance formula riser vortex induced vibration suppression device and method |
| CN106285511B (en) * | 2016-09-27 | 2018-05-22 | 西南石油大学 | A kind of compound disturbance formula standpipe vortex-induced vibration suppression device and method |
| CN108571497A (en) * | 2017-03-08 | 2018-09-25 | 中国科学院力学研究所 | A kind of vortex-induced vibration suppression device |
| CN108533188A (en) * | 2018-02-02 | 2018-09-14 | 佛山科学技术学院 | A kind of vortex-induced vibration of marine riser restraining device |
| CN108679357A (en) * | 2018-05-13 | 2018-10-19 | 西南石油大学 | A kind of magnetic force swing is shaken restraining device and method with the whirlpool that water conservancy diversion rotation is combined |
| 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 |
| CN110792658A (en) * | 2019-10-29 | 2020-02-14 | 江苏科技大学 | Marine magnetic suspension vortex-induced vibration suppression device |
| CN110792658B (en) * | 2019-10-29 | 2021-07-06 | 江苏科技大学 | Marine magnetic suspension vortex-induced vibration suppression device |
| CN112145857A (en) * | 2020-08-14 | 2020-12-29 | 海洋石油工程股份有限公司 | Vortex-induced vibration suppression device for marine flexible riser |
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Application publication date: 20130227 |