CN203515366U - Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes - Google Patents
Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes Download PDFInfo
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- CN203515366U CN203515366U CN201320570553.1U CN201320570553U CN203515366U CN 203515366 U CN203515366 U CN 203515366U CN 201320570553 U CN201320570553 U CN 201320570553U CN 203515366 U CN203515366 U CN 203515366U
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- induced vibration
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Abstract
The utility model relates to a device for hindering vortex-induced vibration of trepanning and diverting spiral strakes. The device for hindering vortex-induced vibration of the trepanning and diverting spiral strakes is formed by combining multiple basic units in the direction of an ocean vertical tube axis in series. Each basic unit is composed of a sleeve and the spiral strake provided with diverting holes and is machined and formed at a time by a plastic mold. The sleeves are coaxial with vertical tubes and the sleeves are directly and fixedly arranged on the vertical tubes in a sleeved mode. Three spiral strakes are arranged on the outer surfaces of the sleeves and evenly distributed in 120 degrees. Each spiral strake rotates around the corresponding sleeve by one loop. Four diverting holes are formed in each spiral strake in the vertical tube axis direction at equal vertical height intervals. According to the device for hindering vortex-induced vibration of the trepanning and diverting spiral strakes, the sleeves of the trepanning and diverting spiral strakes are arranged outside the vertical tubes in a sleeved mode in series, thus vortex-induced vibration caused by currents from different directions can be hindered effectively, the influences on the fatigue life of the vertical tubes are reduced, and the device is light in weight, low in manufacturing cost, and not prone to abrasion or damage.
Description
Technical field
The utility model belongs to marine riser facility laying technology field, is specifically related to a kind of water conservancy diversion helical strake vortex induced vibration inhibiting device with holes.
Background technology
Day by day exhausted with landing field petroleum resources, people's have to more sight to turn to exploitation in deep water hydrocarbon field.Marine riser is to carry out deep water hydrocarbon to exploit requisite equipment, and it has connected underwater well head and operations offshore platform, is the key components of ocean foundation structure.Yet, marine environment is severe, to standpipe, there is direct shock loading with wave, ocean current that size all constantly changes in direction, and the further increasing along with the exploitation depth of water, it is more elongated that standpipe becomes, under the effect of wave, ocean current, the whirlpool that standpipe both sides alternately come off can cause standpipe vibration, thereby causes the fatigue damage of standpipe.Once standpipe occur to lose efficacy, hydrocarbon stratum leaks in seawater unfettered, causes serious accident, and catastrophic ecological disruption is caused in marine site, operation area.Therefore, dissect vortex-induced vibration mechanism, research and development vortex-induced vibration suppression device is the hot issue that marine oil and gas mining operations is concerned about always.
Existing vortex-induced vibration suppression device is mainly that accessory structure is installed on standpipe, as separator disk, radome fairing, spoiler, flap, spiral strake etc., standpipe surface configuration is changed, thereby change standpipe flow field around, weaken the periodically formation and development of whirlpool.Wherein, spiral strake can play same inhibition to the seawater incoming flow of different directions, has been subject to the high praise of industry.But the existence of spiral strake, has increased the drag force of ocean current to standpipe, thereby increased standpipe along the displacement and the strain that flow to, this impact is negative.
Summary of the invention
Problem to be solved in the utility model is the deficiency existing for existing vortex-induced vibration of marine riser restraining device, provide a kind of based on existing spiral strake restraining device, on spiral strake, offer several pod apertures, to reach, reduce the perforate water conservancy diversion helical strake vortex induced vibration inhibiting device of ocean current to standpipe drag force.
For achieving the above object, the utility model adopts following technical scheme:
A perforate water conservancy diversion helical strake vortex induced vibration inhibiting device, is combined along marine riser axis direction tandem by a plurality of elementary cells, and described elementary cell is comprised of sleeve and the spiral strake of offering pod apertures.Sleeve is coaxial with standpipe, and sleeve set is fixed on standpipe.Sleeve outer surface has three spiral strakes, is 120 ° and is uniformly distributed, and every spiral strake was around sleeve rotating one week, and the cross section of spiral strake is rectangle.Sleeve and spiral strake are an integral body, by mould, once add molded.On every spiral strake, along vertical height spacing such as standpipe axis directions, offer four pod apertures.
The utility model, owing to taking above technical scheme, has the following advantages:
1, whole device of the present utility model is formed by plastics manufacture, can significantly reduce costs, and simplified manufacturing technique, not perishable and damage, can reuse;
2, the utility model can regulate the distance between each elementary cell according to on-site actual situations, to reach best inhibition.
Accompanying drawing explanation
Fig. 1 is the utility model perspective view
Wherein: 1. sleeve; 2. spiral strake; 3. pod apertures.
The specific embodiment
Below in conjunction with accompanying drawing, concrete enforcement of the present utility model is further described.
The utility model is combined along marine riser axis direction tandem by a plurality of elementary cells, and as shown in Figure 1, described elementary cell is comprised of sleeve 1 and the spiral strake 2 of offering pod apertures 3.Sleeve 1 is coaxial with standpipe, and sleeve 1 suit is fixed on standpipe.Sleeve 1 external surface has three spiral strakes 2, is 120 ° and is uniformly distributed, and every spiral strake 2 rotates a circle around sleeve 1, and the cross section of spiral strake 2 is rectangle.Sleeve 1 and spiral strake 2 are an integral body, by mould, once add molded.On every spiral strake 2, along vertical height spacing such as standpipe axis directions, offer four pod apertures 3.
Specific embodiment:
According to the long-term statistical information of the slenderness ratio of actual marine riser and local ocean wave, ocean current, elementary cell spacing reasonable in design, calculates the elementary cell number n needing.When single elementary cell is installed, directly sleeve 1 suit is fixed on to the correct position on standpipe, sleeve 1 external surface is three spiral strakes 2 that have pod apertures 3.According to the elementary cell spacing of design, according to same mounting method tandem, remaining elementary cell is installed.
After device installs, marine riser is placed in to seawater.Uniform ring around spiral strake 2 can tackle the incoming flow of different directions, and standpipe Flow Field is around played to effective interference effect, thereby destroys the formation of whirlpool.Pod apertures 3 on spiral strake 2 can guide the fluid impacting on spiral strake 2 to pass from it in time, plays effective shunting action, thereby reduces the drag force of current to spiral strake 2; Meanwhile, the fluid that pod apertures 3 derives has been realized disturbance to standpipe Flow Field around, has further destroyed the formation of standpipe both sides whirlpools.Under the acting in conjunction of spiral strake 2 and pod apertures 3, vortex-induced vibration inhibition has obtained effective raising.
Claims (2)
1. a perforate water conservancy diversion helical strake vortex induced vibration inhibiting device, is combined along marine riser axis direction tandem by a plurality of elementary cells, it is characterized in that: described elementary cell is comprised of sleeve (1) and the spiral strake (2) of offering pod apertures (3); Sleeve (1) is coaxial with standpipe, and sleeve (1) suit is fixed on standpipe; Sleeve (1) external surface has three spiral strakes (2), is 120 ° and is uniformly distributed, and every spiral strake (2) rotates a circle around sleeve (1), and the cross section of spiral strake (2) is rectangle; Upper at every spiral strake (2), along vertical height spacing such as standpipe axis directions, offer four pod apertures (3).
2. a kind of perforate water conservancy diversion helical strake vortex induced vibration inhibiting device as claimed in claim 1, is characterized in that: sleeve (1) and spiral strake (2) are an integral body, by mould, once add molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570553.1U CN203515366U (en) | 2013-09-16 | 2013-09-16 | Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570553.1U CN203515366U (en) | 2013-09-16 | 2013-09-16 | Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515366U true CN203515366U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320570553.1U Expired - Fee Related CN203515366U (en) | 2013-09-16 | 2013-09-16 | Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes |
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| CN (1) | CN203515366U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485732A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
| 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 |
| CN104455192A (en) * | 2014-11-06 | 2015-03-25 | 中国计量学院 | Reduction method for vortex-induced vibration of double cylinders in parallel |
| CN107237797A (en) * | 2017-07-17 | 2017-10-10 | 中国计量大学 | A kind of method for reducing of tandem arranged cylinders body vortex-induced vibration |
| CN107476930A (en) * | 2017-07-28 | 2017-12-15 | 武汉理工大学 | A kind of twin float, damping riser wave energy generating set |
| CN107701122A (en) * | 2017-11-01 | 2018-02-16 | 西南石油大学 | The standpipe vortex-induced vibration suppression device and method that a kind of Fenestration drainage is combined with swing |
| 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 |
| CN110145254A (en) * | 2019-06-14 | 2019-08-20 | 天津大学 | A kind of standpipe vortex-induced vibration suppression device |
-
2013
- 2013-09-16 CN CN201320570553.1U patent/CN203515366U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485732A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
| CN103485732B (en) * | 2013-10-15 | 2016-04-06 | 西南石油大学 | A kind of helical strake vortex induced vibration inhibiting device with rotating vane and method |
| 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 |
| CN104455192A (en) * | 2014-11-06 | 2015-03-25 | 中国计量学院 | Reduction method for vortex-induced vibration of double cylinders in parallel |
| CN107237797A (en) * | 2017-07-17 | 2017-10-10 | 中国计量大学 | A kind of method for reducing of tandem arranged cylinders body vortex-induced vibration |
| CN107237797B (en) * | 2017-07-17 | 2018-12-21 | 中国计量大学 | A kind of method for reducing of tandem arranged cylinders body vortex-induced vibration |
| CN107476930A (en) * | 2017-07-28 | 2017-12-15 | 武汉理工大学 | A kind of twin float, damping riser wave energy generating set |
| CN107701122A (en) * | 2017-11-01 | 2018-02-16 | 西南石油大学 | The standpipe vortex-induced vibration suppression device and method that a kind of Fenestration drainage is combined with swing |
| 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 |
| CN110145254A (en) * | 2019-06-14 | 2019-08-20 | 天津大学 | A kind of standpipe vortex-induced vibration suppression device |
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| Date | Code | Title | Description |
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| 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: 20140402 Termination date: 20140916 |
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| EXPY | Termination of patent right or utility model |