CN204098803U - A kind of vortex-induced vibration of marine riser vibration absorber - Google Patents
A kind of vortex-induced vibration of marine riser vibration absorber Download PDFInfo
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- CN204098803U CN204098803U CN201420552995.8U CN201420552995U CN204098803U CN 204098803 U CN204098803 U CN 204098803U CN 201420552995 U CN201420552995 U CN 201420552995U CN 204098803 U CN204098803 U CN 204098803U
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- support bar
- screw rod
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Abstract
The utility model relates to a kind of vortex-induced vibration of marine riser vibration absorber, is made up of upper and lower two support collars and a vibration damping cover; Support the uniform four cylindrical support bars of collar circumference, the vibration damping enclosure is loaded on and supports outside the collar, and it just has through hole to the position of support bar, is placed on outside support bar by the screw rod of one end hollow through through hole; Screw rod other end processing male thread, is twisted solid spacing by nut; A spring is established at often pair of support bar and screw jacket.Be slidably matched with under the damping action of spring at screw rod and support bar, the amplitude of vibration damping cover can significantly be decayed, thus weakens the vibration of standpipe.The utility model structure is simple, with low cost, is not subject to the work limit of flow path direction, has good vortex-induced vibration inhibition.
Description
Technical field
The utility model belongs to marine riser facility laying technology field, is specifically related to a kind of vortex-induced vibration of marine riser vibration absorber.
Background technology
Ocean has become the frontier that various countries solve Land petroleum shortage of resources.Devoting Major Efforts To Developing marine oil and gas be unable to do without marine riser, and as the tie connecting underwater well head and ocean platform, it is the critical passage of safe and efficient transferring oil air-flow.But along with marine oil and gas exploitation is drive on boldly to deep water, the draw ratio of marine riser is increasing, and under severe water current combining with waves effect, marine riser inevitably vortex-induced vibration occurs.Once because of the fatigue failure of vortex-induced vibration initiation marine riser, not only huge economic loss can be brought, also can cause catastrophic failure to the local marine eco-environment.Therefore, the riser vortex induced vibration suppression device of research and development adaptation ocean water current combining with waves is extremely urgent.
Existing vortex-induced vibration of marine riser restraining device can be divided into active suppression and passive suppression two class, and active suppression device needs additional energy to drive, and connect complicated, operating environment requirements is strict; Passive restraining device, mainly through changing standpipe surface configuration, destroy to stream spiral structure to realize and suppress object, but the overwhelming majority can not be tackled the true ocean water current combining with waves of direction change at random.
Summary of the invention
Problem to be solved in the utility model is the deficiency existed for existing vortex-induced vibration of marine riser restraining device, provides a kind of structure simple, with low cost, and can tackle the vortex-induced vibration of marine riser vibration absorber of any direction incoming flow.
To achieve these goals, the utility model adopts following technical scheme:
A kind of vortex-induced vibration of marine riser vibration absorber supports the collar by upper and lower two and a vibration damping cover forms; Support the collar to be made up of two semi-ring steel components of symmetry, be bolted, support the uniform four cylindrical support bars of collar circumference, upper and lower two support collar cards are embraced in standpipe external surface; Vibration damping cover is made up of the two halves plastics matter band of column component of symmetry, is set in and supports outside the collar, connected by bolt; Vibration damping cover just has through hole to the position of support bar, and each through hole is provided with a screw rod; Screw rod one end hollow, be placed on outside support bar, the other end is processed with male thread, stretches out the through hole of vibration damping cover, is twisted solid spacing by nut; A spring is established at often pair of support bar and screw jacket.
The utility model also comprises:
1, support collar internal diameter and equal standpipe outer diameter D, support bar length is 0.1 ~ 0.15D, and diameter is 0.03 ~ 0.04D; Its length is 0.15 ~ 0.2D; Vibration damping cover diameter is 1.25 ~ 1.3D.
The utility model is owing to adopting above technical scheme, and it has the following advantages:
1, the built-in spring of the utility model can play vibration damping effect, effectively slows down the vortex-induced vibration streaming initiation;
2, the utility model can tackle any direction incoming flow, is not subject to the work limit of flow path direction;
3, the utility model vibration damping cover is plastic member, with low cost, reusable, also can be the buoyancy that standpipe provides certain.
Accompanying drawing explanation
Fig. 1 is the utility model perspective view
Fig. 2 is the utility model support set ring structure schematic diagram
Fig. 3 is the utility model support bar, screw rod and spring assembling section
Wherein: 1. standpipe; 2. support the collar; 3. support bar; 4. spring; 5. screw rod; 6. vibration damping cover; 7. nut.
Detailed description of the invention
Below in conjunction with accompanying drawing, concrete enforcement of the present utility model is further described.
As shown in Figure 1, the utility model is made up of upper and lower two support collars 2 and a vibration damping cover 6.As shown in Figure 2, support the collar 2 and be made up of two semi-ring steel components of symmetry, be bolted, support the uniform four cylindrical support bars 3 of the collar 2 circumference.Upper and lower two support collars 2 block to be embraced in standpipe 1 external surface.
As shown in Figure 1, vibration damping cover 6 is made up of the two halves plastics matter band of column component of symmetry, is set in and supports outside the collar 2, connected by bolt.Vibration damping cover 6 just has through hole to the position of support bar 3, and each through hole is provided with a screw rod 5.As shown in Figure 2 and Figure 3, screw rod 5 one end hollow, its internal diameter is greater than support bar 3 external diameter, is placed on outside support bar 3, enables to be enclosed within support bar 3 to be free to slide.The other end of screw rod 5 is processed with male thread, stretches out the through hole of vibration damping cover 6, is twisted solid spacing, as shown in Figure 1 by nut 7.At often pair of support bar 3 and the outer sheathed spring 4 of screw rod 5.The internal diameter of spring 4 is greater than the external diameter of screw rod 5, and when making work, spring 4 can be enclosed within screw rod 5 and realize free-extension.
The described support collar 2 internal diameter equals standpipe 1 outer diameter D; Support bar 3 length is 0.1 ~ 0.15D, and diameter is 0.03 ~ 0.04D; Spring 4 length is 0.15 ~ 0.2D; Vibration damping cover 6 diameter is 1.25 ~ 1.3D.
Specific embodiment:
During in-site installation, first install lower two at the correct position of standpipe 1 and support the collar 2, then eight screw rods 5 are enclosed within the support bar 3 of the support collar 2.Then, eight springs 4 are enclosed within outside eight screw rods 5 successively.Be sleeved on by vibration damping cover 6 and support outside the collar 2, wherein screw rod 5 stretches out the through hole of vibration damping cover 6, and the screw rod 5 male thread end nut 7 stretched out is twisted solid, carries out spacing to vibration damping cover 6.
After installing, standpipe 1 is placed in seawater.Now, seawater streams object and becomes vibration damping cover 6, when streaming Vortex Shedding excited vibrational, be slidably matched with under the damping action of spring 4 at screw rod 5 and support bar 3, the amplitude of vibration damping cover 6 can significantly be decayed, thus weakens the vibration of standpipe 1, realizes the inhibition of vortex-induced vibration.
Claims (1)
1. a vortex-induced vibration of marine riser vibration absorber, is characterized in that: device supports the collar (2) by upper and lower two and a vibration damping cover (6) forms; Support the collar (2) to be made up of two semi-ring steel components of symmetry, be bolted, support the uniform four cylindrical support bars (3) of the collar (2) circumference, upper and lower two the support collar (2) cards are embraced in standpipe (1) external surface; Vibration damping cover (6) is made up of the two halves plastics matter band of column component of symmetry, is set in and supports the collar (2) outward, connected by bolt; Vibration damping cover (6) just has through hole to the position of support bar (3), and each through hole is provided with a screw rod (5); Screw rod (5) one end hollow, be placed on support bar (3) outward, the other end is processed with male thread, stretches out the through hole of vibration damping cover (6), is twisted solid spacing by nut (7); Often pair of support bar (3) and screw rod (5) sheathed spring (4) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420552995.8U CN204098803U (en) | 2014-09-25 | 2014-09-25 | A kind of vortex-induced vibration of marine riser vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420552995.8U CN204098803U (en) | 2014-09-25 | 2014-09-25 | A kind of vortex-induced vibration of marine riser vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204098803U true CN204098803U (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420552995.8U Expired - Fee Related CN204098803U (en) | 2014-09-25 | 2014-09-25 | A kind of vortex-induced vibration of marine riser vibration absorber |
Country Status (1)
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| CN (1) | CN204098803U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201420A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN105546262A (en) * | 2016-01-04 | 2016-05-04 | 西南石油大学 | Device and method for realizing undersea oil pipeline flow damping through vortex-induced vibration |
| CN107940117A (en) * | 2017-11-17 | 2018-04-20 | 江苏壹鼎崮机电科技有限公司 | A kind of adjustable antidetonation support of pipelines |
| CN108590540A (en) * | 2018-05-04 | 2018-09-28 | 西南石油大学 | It is a kind of to arrange the vibration-repressing device and method for inhaling seawater using heaving of the sea pressure difference |
| CN109442113A (en) * | 2018-12-26 | 2019-03-08 | 重庆维斯顿实业有限公司 | A kind of pipe fitting pre-compressing device |
| CN114811186A (en) * | 2022-04-26 | 2022-07-29 | 西南石油大学 | Device and method for preventing collision, blocking seepage and inhibiting vibration of submarine pipeline |
-
2014
- 2014-09-25 CN CN201420552995.8U patent/CN204098803U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201420A (en) * | 2015-10-13 | 2015-12-30 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN105201420B (en) * | 2015-10-13 | 2017-03-22 | 西南石油大学 | Active vortex-induced vibration suppression device |
| CN105546262A (en) * | 2016-01-04 | 2016-05-04 | 西南石油大学 | Device and method for realizing undersea oil pipeline flow damping through vortex-induced vibration |
| CN105546262B (en) * | 2016-01-04 | 2017-11-03 | 西南石油大学 | One kind realizes pipeline under the ocean Drag Reduction device and method using vortex-induced vibration |
| CN107940117A (en) * | 2017-11-17 | 2018-04-20 | 江苏壹鼎崮机电科技有限公司 | A kind of adjustable antidetonation support of pipelines |
| CN107940117B (en) * | 2017-11-17 | 2023-12-05 | 成都倍特建筑安装工程有限公司 | Adjustable anti-seismic pipeline bracket |
| CN108590540A (en) * | 2018-05-04 | 2018-09-28 | 西南石油大学 | It is a kind of to arrange the vibration-repressing device and method for inhaling seawater using heaving of the sea pressure difference |
| CN108590540B (en) * | 2018-05-04 | 2019-07-16 | 西南石油大学 | It is a kind of to arrange the vibration-repressing device and method for inhaling seawater using heaving of the sea pressure difference |
| CN109442113A (en) * | 2018-12-26 | 2019-03-08 | 重庆维斯顿实业有限公司 | A kind of pipe fitting pre-compressing device |
| CN109442113B (en) * | 2018-12-26 | 2020-04-10 | 重庆维斯顿实业有限公司 | Pipe joint pre-pressing device |
| CN114811186A (en) * | 2022-04-26 | 2022-07-29 | 西南石油大学 | Device and method for preventing collision, blocking seepage and inhibiting vibration of submarine pipeline |
| CN114811186B (en) * | 2022-04-26 | 2023-05-16 | 西南石油大学 | Submarine pipeline anti-collision seepage-prevention and vibration-suppression device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150114 Termination date: 20150925 |
|
| EXPY | Termination of patent right or utility model |