CN202510918U - W-shaped device for inhibiting vortex induced vibration of marine riser - Google Patents
W-shaped device for inhibiting vortex induced vibration of marine riser Download PDFInfo
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- CN202510918U CN202510918U CN2012201829352U CN201220182935U CN202510918U CN 202510918 U CN202510918 U CN 202510918U CN 2012201829352 U CN2012201829352 U CN 2012201829352U CN 201220182935 U CN201220182935 U CN 201220182935U CN 202510918 U CN202510918 U CN 202510918U
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- spoiler
- marine riser
- air guide
- guide sleeve
- induced vibration
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Abstract
The utility model relates to a device for inhibiting vortex induced vibration of a marine riser. The device is formed by combining a plurality of basic units in serial mode along the axial direction of the riser. Each basic unit is a whole formed by a guide cover and a single W-shaped turbulence plate arranged on the guide cover and is processed by a plastic mould. The guide cover is of a cylindrical structure with the inner diameter equal to the outer diameter of the riser, the turbulence plate expands along the peripheral direction to form a W shape, the cross section of the turbulence plate is an isosceles triangle, the turbulence plate is arranged in the middle of the guide cover, and the distance between the turbulence plate and the upper edge and the lower edge of the guide cover is the same. The guide covers with the W-shaped turbulence plates are sleeved outside the riser in serial mode, vortex induced vibration can be effectively inhibited from different flow coming directions, and the influence of the vortex induced vibration on fatigue service life of the riser is reduced. The W-shaped device for inhibiting vortex induced vibration of the marine riser is light in weight, low in manufacture cost and not easy to corrode and damage.
Description
Technical field
The utility model belongs to marine riser facility laying technology field, ocean, is specifically related to a kind of novel restraining device that can effectively suppress ocean marine riser vortex-induced vibration.
Background technique
The offshore oil marine riser is the sleeve pipe from the offshore drilling platform to the sea-bottom shallow, and its major function is an insulating sea water, forms the circulation of drilling fluid passage, and the while is as the power of the holding structure of offshore wellhead.The integrity of marine riser is most important to operation on the sea safety.Marine riser continues to receive the effect of combined loads such as wave, ocean current in the ocean, when ocean current is walked around marine riser, before and after marine riser, form pressure drag, and pulls power in its cylinder formation, thereby causes marine riser extensional vibration; In addition, produce the whirlpool that alternately comes off in both sides, marine riser rear, cause that the lift vertical with flow direction is applied on the marine riser extraly, the alternate of lift direction has caused the transverse vibration of marine riser, and this vibration is more violent; When vortex shedding frequency the time near a certain natural frequency of marine riser vibration; Structural vibrations can force the vortex shedding frequency in a certain natural frequency of bigger flow rates internal fixation in cylinder; Locking phenomena takes place, i.e. resonance, thus cause the marine riser fatigue failure.In case marine riser generation fatigue ruption not only can cause marine serious accident, causes enormous economic loss, and will cause catastrophic destruction to ocean environment.
Existing marine riser vortex-induced vibration suppression device exists cost high, and manufacturing process is complicated, and weight is big, installs loaded down with trivial details and field conduct is operated deficiencies such as inconvenience.
Summary of the invention
The utility model to deal with problems be the deficiency that exists to existing ocean marine riser inhibition vortex-induced vibration device, provide a kind of simple in structure, in light weight; Reliable performance; Cost is low, and is on-the-spot easy for installation, not perishable and the novel sea marine riser vortex-induced vibration suppression device that damages.
The utility model adopts following technological scheme: W font ocean marine riser vortex-induced vibration suppression device is combined along marine riser axial direction tandem by a plurality of elementary cells; Elementary cell be air guide sleeve and on the integral body that constitutes of single W font spoiler, process by plastic mould; Air guide sleeve is the cylindrical structure that internal diameter equals the marine riser external diameter; Spoiler becomes the W font along circumferentially deploying, and its section is an isosceles triangle, and spoiler is arranged in the middle part of air guide sleeve, and is equal apart from the Edge Distance up and down of air guide sleeve.The air guide sleeve of the utility model tandem suit band W font spoiler outside marine riser can effectively suppress vortex-induced vibration from different incoming flow directions, reduces it to the marine riser Fatigue Life.
The utility model also comprises:
1, the thickness of air guide sleeve is 0.025 ~ 0.035 times of marine riser D outer diameter, and the axial length L of air guide sleeve is 1.5 ~ 2 times of spoiler W font height H;
2, the cross section of spoiler is an isosceles triangle, and bottom side length s is 0.05D ~ 0.12D, and height h is 0.15D ~ 0.35D; Spoiler angle theta of turning point behind the circumferentially deploying is 60o ~ 120o; The turning point is that radius R is the circular arc of 0.08D ~ 0.15D; Spoiler is arranged in the middle part of air guide sleeve, is 0.25L ~ 0.5L apart from the T of Edge Distance up and down of air guide sleeve;
3, spoiler and air guide sleeve are by the moulding of plastic mould time processing.
The utlity model has following advantage:
1, this device spoiler and air guide sleeve are as a whole, are sleeved on the outer surface of marine riser, install simple;
2, the material of this device air guide sleeve and spoiler is plastics, can significantly reduce cost, and simplified manufacturing technique, not perishable and damage can be reused;
3, this device spoiler can slow down the vortex-induced vibration that difference comes flow path direction to cause effectively;
4, this device can suitably be adjusted the distance between each elementary cell according to on-site actual situations, makes the inhibition effect reach best.
Description of drawings
Schematic three dimensional views after three elementary cell assembled in series of Fig. 1 the utility model;
Fig. 2 the utility model elementary cell schematic three dimensional views;
Fig. 3 the utility model is along the circumferentially deploying schematic representation;
The flat cutting schematic representation of Fig. 4 the utility model basic structure;
The A-A generalized section of Fig. 5 the utility model spoiler.
Wherein: 1. marine riser, 2. air guide sleeve, 3. spoiler.
Embodiment
The utility model W font ocean marine riser vortex-induced vibration suppression device is combined along marine riser axial direction tandem by a plurality of elementary cells, elementary cell be air guide sleeve and on the integral body that constitutes of single W font spoiler, process by plastic mould; The thickness of air guide sleeve is 0.025 ~ 0.035 times of marine riser D outer diameter, and the axial length L of air guide sleeve is 1.5 ~ 2 times of spoiler W font height H; The cross section of spoiler is an isosceles triangle, and bottom side length s is 0.05D ~ 0.12D, and height h is 0.15D ~ 0.35D; Spoiler angle theta of turning point behind the circumferentially deploying is 60o ~ 120o; The turning point is that radius R is the circular arc of 0.08D ~ 0.15D; Spoiler is arranged in the middle part of air guide sleeve, is 0.25L ~ 0.5L apart from the T of Edge Distance up and down of air guide sleeve.
Like Fig. 1, the elementary cell tandem is sleeved on the marine riser outer surface, the W font of two elementary cells needs alignment up and down, makes up and down two spoiler epireliefs or the line of recess and the parallel axes of marine riser down.Distance between elementary cell is generally 0.2L ~ 1.5L, also can suitably adjust according to actual conditions, makes the inhibition effect reach best.
Claims (4)
1. the utility model relates to a kind of W font ocean marine riser vortex-induced vibration suppression device, it is characterized in that: combine along marine riser axial direction tandem by a plurality of elementary cells, elementary cell be air guide sleeve and on the integral body that constitutes of single W font spoiler; Air guide sleeve is the cylindrical structure that internal diameter equals the marine riser D outer diameter; Spoiler becomes the W font along circumferentially deploying, and it highly is H, and section is an isosceles triangle, and angle is θ to spoiler in the turning point behind circumferentially deploying, and the turnover transition position is that radius is the circular arc of R; Spoiler is arranged in the middle part of air guide sleeve, is T apart from the Edge Distance up and down of air guide sleeve.
2. W font as claimed in claim 1 ocean marine riser vortex-induced vibration suppression device, it is characterized in that: the thickness of air guide sleeve is 0.025D ~ 0.035D, the axial length L of air guide sleeve is 1.5H ~ 2H.
3. W font as claimed in claim 1 ocean marine riser vortex-induced vibration suppression device is characterized in that: the W font height H of spoiler behind the circumferentially deploying is 1.2D ~ 2.4D; The cross section of spoiler is an isosceles triangle, and bottom side length s is 0.05D ~ 0.12D, and high h degree is 0.15D ~ 0.35D; Spoiler angle theta of turning point behind the circumferentially deploying is 60o ~ 120o; The turning point is that radius R is the circular arc of 0.08D ~ 0.15D; Spoiler is arranged in the middle part of air guide sleeve, is 0.25L ~ 0.5L apart from the T of Edge Distance up and down of air guide sleeve.
4. W font as claimed in claim 1 ocean marine riser vortex-induced vibration suppression device, it is characterized in that: spoiler and air guide sleeve are an integral body, by the moulding of plastic mould time processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201829352U CN202510918U (en) | 2012-04-27 | 2012-04-27 | W-shaped device for inhibiting vortex induced vibration of marine riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201829352U CN202510918U (en) | 2012-04-27 | 2012-04-27 | W-shaped device for inhibiting vortex induced vibration of marine riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510918U true CN202510918U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201829352U Expired - Fee Related CN202510918U (en) | 2012-04-27 | 2012-04-27 | W-shaped device for inhibiting vortex induced vibration of marine riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510918U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105863526A (en) * | 2016-06-22 | 2016-08-17 | 西南石油大学 | Device and method for suppressing vortex-induced vibration of rotationally-telescopic tail swinging type riser |
| 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 |
| CN107035623A (en) * | 2017-04-26 | 2017-08-11 | 中国二十二冶集团有限公司 | Vortex-induced vibration inhibiting method in superelevation blower fan tower barrel hoisting process |
| CN110671059A (en) * | 2019-09-09 | 2020-01-10 | 建湖县永维阀门钻件有限公司 | Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof |
| CN110748305A (en) * | 2019-09-09 | 2020-02-04 | 建湖县永维阀门钻件有限公司 | Deepwater marine riser with protective shell |
| CN114838235A (en) * | 2022-02-25 | 2022-08-02 | 中国海洋石油集团有限公司 | Vortex-induced vibration suppression device additionally provided with fish scale-shaped protruding marine riser |
-
2012
- 2012-04-27 CN CN2012201829352U patent/CN202510918U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103453276B (en) * | 2013-09-13 | 2016-01-06 | 西南石油大学 | A kind of vortex-induced vibration suppression device and method that can turn separator disk with tail-rotor |
| CN105863526A (en) * | 2016-06-22 | 2016-08-17 | 西南石油大学 | Device and method for suppressing vortex-induced vibration of rotationally-telescopic tail swinging type riser |
| 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 |
| 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 |
| CN107035623A (en) * | 2017-04-26 | 2017-08-11 | 中国二十二冶集团有限公司 | Vortex-induced vibration inhibiting method in superelevation blower fan tower barrel hoisting process |
| CN110671059A (en) * | 2019-09-09 | 2020-01-10 | 建湖县永维阀门钻件有限公司 | Device for restraining vortex-induced vibration of marine drilling riser and preparation method thereof |
| CN110748305A (en) * | 2019-09-09 | 2020-02-04 | 建湖县永维阀门钻件有限公司 | Deepwater marine riser with protective shell |
| CN114838235A (en) * | 2022-02-25 | 2022-08-02 | 中国海洋石油集团有限公司 | Vortex-induced vibration suppression device additionally provided with fish scale-shaped protruding marine riser |
| CN114838235B (en) * | 2022-02-25 | 2023-06-27 | 中国海洋石油集团有限公司 | Vortex-induced vibration suppression device with fish scale-shaped protruding marine riser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20130427 |