CN103485731A - Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser - Google Patents
Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser Download PDFInfo
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- CN103485731A CN103485731A CN201310478855.0A CN201310478855A CN103485731A CN 103485731 A CN103485731 A CN 103485731A CN 201310478855 A CN201310478855 A CN 201310478855A CN 103485731 A CN103485731 A CN 103485731A
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Abstract
The invention relates to a device and a method for inhibiting vortex-induced vibration of a rotatable boomerang type water riser. The device for inhibiting vortex-induced vibration of the rotatable boomerang type water riser is characterized by being formed by combination of multiple basic units, and each basic unit is composed of two parts, namely a sleeve and a rotating module; two rotating module fixing parts are fixedly arranged at a position with an interval of the height of one sleeve outside the water riser, a rotating module rotating part is sheathed outside the rotating module fixing parts, and the sleeve is sheathed outside the rotating module rotating part; cross section of the sleeve is in a boomerang shape, and a water flow can produce different pressures on a planar section and a curved section of the incident flow surface of the sleeve, so that an axial steering force around the sleeve is formed; the water flow drives the sleeve to continuously rotate, a streaming flow field outside the water riser is effectively destroyed, and formation of a vortex in the rear is interfered, so that inhibition on the vortex-induced vibration is realized. The sleeve of the device for inhibiting vortex-induced vibration of the rotatable boomerang type water riser is made of plastic, and the device for inhibiting vortex-induced vibration of the rotatable boomerang type water riser is low in cost and can be repeatedly used.
Description
Technical field
The invention belongs to Yu Haiyang marine riser facility laying technology field, be specifically related to a kind of Cyclic dart formula marine riser vortex-induced vibration suppression device and method of turning.
Background technology
China's oil Natural Gas Consumption Using rapid growth, externally interdependency is climbed to a higher point successively, and along with the exhaustion gradually of Land petroleum resource, exploitation exploitation marine oil and gas has become inevitable demand energetically.At present, numerous slim cylindrical construction things are arranged in deep-sea oil gas drilling communication system, as ocean marine riser, production riser and petroleum pipeline etc., their total cost surpasses 50 percent of whole drilling communication system.Above-mentioned elongated works, under the effect of wave or ocean current, in certain reynolds number range, the whirlpool periodically come off all can appear in rear, makes structure in the direction generation oscillation crosswise vertical with current.Take marine riser as example, when wave or ocean current process marine riser, under certain flow conditions, the marine riser both sides can form the whirlpool alternately come off, coming off of whirlpool produces periodic variable-lift to marine riser, make marine riser with flow to vertical direction on oscillation crosswise occurs.Simultaneously, the vibration of marine riser again conversely stream field exert an influence, strengthen coming off of whirlpool, thereby present the vortex-induced vibration of Coupling effect of seepage rock deformation.This situation can shorten the application life of marine riser, and the aggravation fatigue failure, once the slim-lined construction things such as marine riser are destroyed, can cause drilling mud or hydrocarbon fluids to flow into ocean, causes great marine pollution, destroys dissolvingly the local marine eco-environment.
In order to reduce and to prevent the destruction that vortex-induced vibration produces, extend the application life of marine riser, the restraining device of vortex-induced vibration is installed on the marine riser surface usually.At present, the vortex-induced vibration suppression device of developing mainly contains spiral strake, demarcation strip, ribbon, guide vane, spoiler, pipe box, radome fairing etc.But the restraining device of above-mentioned vortex-induced vibration generally is fixedly mounted on marine riser, can not rotate, in the face of the operating environment that the ocean water flow path direction changes often, its application has larger limitation.
Summary of the invention
It is the deficiency existed for existing ocean marine riser vortex-induced vibration suppression device that the present invention will deal with problems, provide a kind of simple in structure, dependable performance, on-the-spot easy for installation, and can tackle turned Cyclic dart formula marine riser vortex-induced vibration suppression device and the method for carrying out arbitrarily flow path direction.
To achieve these goals, the present invention adopts following technical scheme:
A kind of Cyclic dart formula marine riser vortex-induced vibration suppression device that turns is combined by a plurality of elementary cell tandems, and described elementary cell comprises sleeve and rotary module two parts.Rotary module comprises rotary module fixture and rotary module tumbler two parts.The rotary module fixture is comprised of two semi-ring steel components of symmetry, and its internal diameter equals the marine riser external diameter, at the lateral surface of rotary module fixture, is processed with a circle evagination annulus.The rotary module fixture is fixedly set in marine riser from both sides, and makes to be joined with bolts.The rotary module tumbler also is comprised of two semi-ring steel components of symmetry, rotary module tumbler internal diameter equals the external diameter of rotary module fixture, and side is processed with the arc-shaped ring groove corresponding with rotary module fixture evagination annulus within it, the arc-shaped ring groove cross section is 3/4 circular arc, and diameter is greater than the evagination circle diameter.Each semi-circular steel components of rotary module tumbler is provided with the locking plate groove in the strap bolt hole of docking to locking plate with quill.The rotary module tumbler is sleeved on outside the rotary module fixture, is connected by bolt, and arc-shaped ring groove is enclosed within on the evagination annulus.Sleeve is the cylinder that cross section is Cyclic dart shape, by two identical plastics matter blocks of structure, is assembled.There is the center hole coaxial with marine riser in sleeve, and the internal diameter of center hole equals the external diameter of rotary module tumbler.Be equipped with the sleeve ear clip in strap bolt hole in the upper and lower end face of sleeve two contact of blocks faces, and all have the axial retention sheet with bolt hole at the upper and lower two ends of each block.Two blocks of sleeve, from both sides are sleeved on the rotary module tumbler, and are the mirror image reversal symmetry between two blocks, and the axial retention sheet is snapped in the locking plate groove on the rotary module tumbler, are bolted fixing; Simultaneously, the sleeve ear clip of two block ends aligns mutually, also is bolted fixing.
A kind of Cyclic dart formula marine riser vortex-induced vibration inhibiting method that turns, two rotary module fixtures of the position of the sleeve height in interval fixed installation outside marine riser, a rotary module tumbler of suit outside each rotary module fixture, sleeve set, outside the rotary module tumbler, and limits it by the axial retention sheet and endwisely slips.The cross section of sleeve is Cyclic dart shape, and the either direction incoming flow acts on sleeve surface, can meet the surperficial planar section of stream at sleeve and produce the different pressure of numerical values recited with the cambered surface section, thereby form the steering force around the sleeve axis.Under the cooperation of rotary module fixture evagination annulus and rotary module tumbler arc-shaped ring groove, flow action will order about sleeve rotating at the steering force of sleeve surface.Current continue to flow through sleeve, make sleeve continue rotation, have effectively destroyed the outer Flow Field of marine riser, disturb the formation of its rear whirlpool, thereby realize the inhibition of vortex-induced vibration.
The present invention is owing to taking above technical scheme, and it has the following advantages:
1, the present invention can realize rotating freely, and can effectively slow down the vortex-induced vibration that difference comes flow path direction to cause, and adapts to the abyssal environment that flows to frequent variations;
2, sleeve of the present invention is formed by the plastics manufacture, with low cost, reusable, also can be marine riser certain buoyancy is provided;
3, the present invention can be according to on-site actual situations, and the distance between each elementary cell of free adjustment, to reach best vortex-induced vibration inhibition.
The accompanying drawing explanation
Fig. 1 is apparatus of the present invention perspective view
Fig. 2 is sleeve generalized section of the present invention
Fig. 3 is tube-in-tube structure schematic diagram of the present invention
Fig. 4 is rotary module perspective view of the present invention
Fig. 5 is the A-A generalized section
Fig. 6 is rotary module tumbler schematic diagram of the present invention
Fig. 7 is rotary module fixture schematic diagram of the present invention
Wherein: 1, marine riser; 2, sleeve; 3, rotary module fixture; 4, rotary module tumbler; 5, sleeve ear clip; 6, axial retention sheet; 7, evagination annulus; 8, arc-shaped ring groove; 9, locking plate groove; 10, bolt.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention is further described.
The present invention is combined along marine riser axis direction tandem by a plurality of elementary cells, and as shown in Fig. 1, Fig. 3, Fig. 4, described elementary cell comprises sleeve 2 and rotary module two parts.
As shown in Figure 4, rotary module comprises rotary module fixture 3 and rotary module tumbler 4 two parts.As shown in Figure 7, rotary module fixture 3 is comprised of two semi-ring steel components of symmetry, and its internal diameter equals marine riser 1 external diameter, at the lateral surface of rotary module fixture 3, is processed with a circle evagination annulus 7.Rotary module fixture 3 is fixedly set in marine riser 1 from both sides, and uses bolt 10 to be connected and fixed.As shown in Figure 6, rotary module tumbler 4 also is comprised of two semi-ring steel components of symmetry, rotary module tumbler 4 internal diameters equal the external diameter of rotary module fixture 3, and side is processed with the arc-shaped ring groove 8 corresponding with rotary module fixture 3 evagination annulus 7 within it, arc-shaped ring groove 8 cross sections are 3/4 circular arc, and diameter is greater than evagination annulus 7 diameters.Each semi-circular steel components of rotary module tumbler 4 is provided with the locking plate groove 9 in the strap bolt hole of docking with sleeve 2 axial retention sheets 6.Rotary module tumbler 4 is sleeved on outside rotary module fixture 3, is connected by bolt 10, and arc-shaped ring groove 8 is enclosed within on evagination annulus 7, as shown in Figure 5.
As shown in Figure 2 and Figure 3, sleeve 2 is cylinders that cross section is Cyclic dart shape, by two identical plastics matter blocks of structure, is assembled.There is the center hole coaxial with marine riser 1 in sleeve 2, and the internal diameter of center hole equals the external diameter of rotary module tumbler 4.Be equipped with the sleeve ear clip 5 in strap bolt hole in the upper and lower end face of 2 liang of contact of blocks faces of sleeve, and all have the axial retention sheet 6 with bolt hole at the upper and lower two ends of each block.Two blocks of sleeve 2, from both sides are sleeved on rotary module tumbler 4, and are the mirror image reversal symmetry between two blocks, and axial retention sheet 6 is snapped in the locking plate groove 9 on rotary module tumbler 4, by bolt 10, are connected and fixed; Simultaneously, the sleeve ear clip 5 of two block ends aligns mutually, also by bolt 10, is connected and fixed.
A kind of Cyclic dart formula marine riser vortex-induced vibration inhibiting method that turns, two rotary module fixtures 3 of position fixed installation at one, outer interval of marine riser 1 sleeve, 2 height, at rotary module tumbler 4 of the outer suit of each rotary module fixture 3, sleeve 2 is sleeved on outside rotary module tumbler 4, and limits it by axial retention sheet 6 and endwisely slip.The cross section of sleeve 2 is Cyclic dart shape, and it is upper that the either direction incoming flow acts on sleeve 2 surfaces, can meet the surperficial planar section of stream at sleeve 2 and produce the different pressure of numerical values recited with the cambered surface section, thereby form the steering force around sleeve 2 axis.Under the cooperation of rotary module fixture 3 evagination annulus 7 and rotary module tumbler 4 arc-shaped ring grooves 8, the steering force of flow action on sleeve 2 surfaces will order about sleeve 2 rotations.Current continue to flow through sleeve 2, make sleeve 2 continue rotation, have effectively destroyed the outer Flow Field of marine riser 1, disturb the formation of its rear whirlpool, thereby realize the inhibition of vortex-induced vibration.
Marine riser is generally under water the supreme km of hundreds of rice and does not wait, and in order to ensure inhibition, can regulate the distance between each elementary cell according to actual conditions, to reach desirable inhibition.
Specific embodiment:
Long-term statistical information according to the slenderness ratio of actual marine riser 1 and local ocean wave, ocean current, elementary cell spacing reasonable in design, calculate the elementary cell number n needed, and the number of sleeve 2 is n, the number of rotary module fixture 3 is 2n, and the number of rotary module tumbler 4 is 2n.
When single elementary cell is installed, at first, at two rotary module fixtures 3 of position fixed installation of one, outer interval of marine riser 1 sleeve, 2 height; Then, at rotary module tumbler 4 of the outer suit of each rotary module fixture 3, and the arc-shaped ring groove 8 of rotary module tumbler 4 is enclosed within on the evagination annulus 7 of rotary module fixture 3; Then, sleeve 2 is sleeved on outside rotary module tumbler 4, and guarantees to be the mirror image reversal symmetry between two blocks of sleeve 2, and axial retention sheet 6 is snapped in the locking plate groove 9 on rotary module tumbler 4, be connected and fixed by bolt 10; Simultaneously, the sleeve ear clip 5 of two block ends aligns mutually, also by bolt 10, is connected and fixed.So far, an elementary cell installs.According to same order, remaining elementary cell is installed subsequently.
After device installs, marine riser 1 is placed in to seawater.In the seawater of different depth, each elementary cell can be according to correspondence come flow path direction and flow velocity size, under the cooperation of rotary module fixture 3 evagination annulus 7 and rotary module tumbler 4 arc-shaped ring grooves 8, realize sleeve 2 to be subject to water impact and do not stop rotation, effectively destroyed the outer Flow Field of marine riser 1, disturb the formation of its rear whirlpool, thereby realize the inhibition of vortex-induced vibration.
Claims (2)
1. one kind can turn Cyclic dart formula marine riser vortex-induced vibration suppression device, by a plurality of elementary cell tandems, is combined, and it is characterized in that: described elementary cell comprises sleeve (2) and rotary module two parts; Rotary module comprises rotary module fixture (3) and rotary module tumbler (4) two parts; Rotary module fixture (3) is comprised of two semi-ring steel components of symmetry, and its internal diameter equals marine riser (1) external diameter, at the lateral surface of rotary module fixture (3), is processed with a circle evagination annulus (7); Rotary module fixture (3) is fixedly set in marine riser (1) from both sides, and uses bolt (10) to be connected and fixed; Rotary module tumbler (4) also is comprised of two semi-ring steel components of symmetry, rotary module tumbler (4) internal diameter equals the external diameter of rotary module fixture (3), and side is processed with the arc-shaped ring groove (8) corresponding with rotary module fixture (3) evagination annulus (7) within it, arc-shaped ring groove (8) cross section is 3/4 circular arc, and diameter is greater than evagination annulus (7) diameter; Each semi-circular steel components of rotary module tumbler (4) is provided with the locking plate groove (9) in the strap bolt hole of docking with sleeve (2) axial retention sheet (6); Rotary module tumbler (4) is sleeved on outside rotary module fixture (3), is connected by bolt (10), and arc-shaped ring groove (8) is enclosed within on evagination annulus (7); Sleeve (2) is the cylinder that cross section is Cyclic dart shape, by two identical plastics matter blocks of structure, is assembled; There is the center hole coaxial with marine riser (1) in sleeve (2), and the internal diameter of center hole equals the external diameter of rotary module tumbler (4); Be equipped with the sleeve ear clip (5) in strap bolt hole in the upper and lower end face of sleeve (2) two contact of blocks faces, and all have the axial retention sheet (6) with bolt hole at the upper and lower two ends of each block; Two blocks of sleeve (2) are from both sides are sleeved on rotary module tumbler (4), and be the mirror image reversal symmetry between two blocks, and axial retention sheet (6) is snapped in the locking plate groove (9) on rotary module tumbler (4), by bolt (10), be connected and fixed; Simultaneously, the sleeve ear clip (5) of two block ends is alignment mutually, also by bolt (10), is connected and fixed.
2. one kind can turn Cyclic dart formula marine riser vortex-induced vibration inhibiting method, it is characterized in that: position fixed installation two rotary module fixtures (3) of the sleeve in interval (2) height outside marine riser (1), a suit rotary module tumbler (4) outside each rotary module fixture (3), sleeve (2) is sleeved on outside rotary module tumbler (4), and limits it by axial retention sheet (6) and endwisely slip; The cross section of sleeve (2) is Cyclic dart shape, and the either direction incoming flow acts on sleeve (2) surface, can meet the surperficial planar section of stream at sleeve (2) and produce the different pressure of numerical values recited with the cambered surface section, thereby form the steering force around sleeve (2) axis; Under the cooperation of rotary module fixture (3) evagination annulus (7) and rotary module tumbler (4) arc-shaped ring groove (8), the steering force of flow action on sleeve (2) surface will order about sleeve (2) rotation; Current continue to flow through sleeve (2), make sleeve (2) continue rotation, have effectively destroyed the outer Flow Field of marine riser (1), disturb the formation of its rear whirlpool, thereby realize the inhibition of vortex-induced vibration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310478855.0A CN103485731A (en) | 2013-10-15 | 2013-10-15 | Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
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| CN201310478855.0A CN103485731A (en) | 2013-10-15 | 2013-10-15 | Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN113931581A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Can anti whirlpool press down riser that shakes |
| CN113931583A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Drilling riser protection device capable of unloading force |
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| 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 |
| WO2010141843A2 (en) * | 2009-06-04 | 2010-12-09 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
| CN102943634A (en) * | 2012-11-16 | 2013-02-27 | 西南石油大学 | Free-rotation impeller device for inhibiting eddy induced vibration of marine riser |
| CN202990906U (en) * | 2013-01-09 | 2013-06-12 | 西南石油大学 | Vortex-induced vibration suppression device with rotatable spiral strakes |
| 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 |
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2013
- 2013-10-15 CN CN201310478855.0A patent/CN103485731A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2010141843A2 (en) * | 2009-06-04 | 2010-12-09 | Diamond Offshore Drilling, Inc. | Riser floatation with anti-vibration strakes |
| CN102943634A (en) * | 2012-11-16 | 2013-02-27 | 西南石油大学 | Free-rotation impeller device for inhibiting eddy induced vibration of marine riser |
| CN202990906U (en) * | 2013-01-09 | 2013-06-12 | 西南石油大学 | Vortex-induced vibration suppression device with rotatable spiral strakes |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN113931581A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Can anti whirlpool press down riser that shakes |
| CN113931583A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Drilling riser protection device capable of unloading force |
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Application publication date: 20140101 |