CN102979490A - Bubble-column vortex-induced vibration suppression device of stand pipe under marine environment - Google Patents
Bubble-column vortex-induced vibration suppression device of stand pipe under marine environment Download PDFInfo
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- CN102979490A CN102979490A CN2012104874640A CN201210487464A CN102979490A CN 102979490 A CN102979490 A CN 102979490A CN 2012104874640 A CN2012104874640 A CN 2012104874640A CN 201210487464 A CN201210487464 A CN 201210487464A CN 102979490 A CN102979490 A CN 102979490A
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Abstract
The invention provides a bubble-column vortex-induced vibration suppression device of a stand pipe under a marine environment. The whole bubble-column vortex-induced vibration suppression device is composed of one or more bubble-column vortex-induced vibration suppression units (units for short), wherein the units are unequal in height and thickness. Each unit is a gas-filled (liquid-filled) column body and consists of a bracket and a bubble-column, wherein the bracket is used for connecting the bubble-column with the stand pipe and is composed of a base body and a control body, the bubble-column is used for realizing vortex-induced vibration suppression and is composed of a response surface and a response body, wherein the response surface is made of a material capable of bending and deforming along with the stress, and the response body is gas (liquid). The bubble-column vortex-induced vibration suppression device is flexible to manufacture and mount, can be directly sleeved on the stand pipe and can be also machined into a whole together with the stand pipe. The bubble-column vortex-induced vibration suppression device disclosed by the invention has the advantages of suppressing the occurrence of vortex by responding incoming flow and dispersing and eliminating the acting force to the stand pipe, which is formed by movement of flow field near the stand pipe by using the response surfaces and the response bodies.
Description
Technical field
The invention belongs to sea oil drilling and production equipment technology field, what relate to is a kind of vortex-induced vibration suppression device.
Background technology
In offshore oil drilling and recovery process, standpipe is a kind of important syndeton that connects ocean platform and seabed installation.Because the ocean fluid is when flowing through standpipe, under certain fluid motion state, can alternately produces in the standpipe both sides and discharge whirlpool.To alternately produce drag force to standpipe during vortex shedding, standpipe is vibration-generating on the direction vertical with ocean current therefore; The standpipe vibration will react on the flow field again, strengthen vortex.When this vortex shedding frequence consistent with the eigentone of standpipe in Sea Current or enough near the time, standpipe vibration comes off " locking " with vortex, the forced vibration of standpipe will continue reinforcement.This interaction of standpipe and fluid is a kind of coupled motions, and this motion has become the principal mode that standpipe damages.Standpipe not only can be because of the vortex generation oscillation crosswise that comes off, also can streamwise generation extensional vibration.When this coupled vibrations continuous action, will speed up the standpipe fatigue damage, reduce standpipe application life, and may cause accident to occur, and then may cause heavy losses.
Vortex-induced vibration not only causes standpipe horizontal stroke, extensional vibration, can cause vertical vibration simultaneously, also may cause lateral oscillation, causes offshore platform unstable.Vortex-induced vibration has changed the residing environment of standpipe, and what impact was produced carries out smoothly.Therefore, inhibition whirlpool active force is a vital task in marine drilling and the mining operations.
At present, vortex-induced vibration suppression device mainly is to install disturbing flow device additional to realize outside standpipe.A common feature of these devices is to use rigid body contact with incoming flow, does not consider to disperse and reduces incoming flow to the active force of standpipe, does not also have the counter-measure of consideration under the sharp active force in whirlpool.
Summary of the invention
The present invention is directed to current vortex-induced vibration suppression device and be passive response and only to the shortcoming of incoming flow response, propose a kind of vortex-induced vibration suppression device that can have active response concurrently.This device is made with installation simple, flexible, and economical, efficient, wide accommodation.
This device is a kind of bubble post whirlpool (blister cylinder vortex-induced vibration) restraining device that shakes, its elementary cell is that a cross section is topping up or the inflation cylinder of annulus, can use a unit or a plurality of units in series to form needed vortex-induced vibration suppression device on the standpipe.Each unit is comprised of four essential parts: matrix (ring surface in the cylinder), response surface (the outer ring surface of cylinder), control volume (cylinder upper and lower surface), response body (filling fluid in the cylinder).The shake feature of restraining device of this marine environment lower standing tube bubble post whirlpool is: wholely be made of one or more elementary cell, each unit is circle ring column, and each unit needn't be identical.Each unit is made of two parts of support and bubble post.Support is made of matrix and control volume, and matrix is cylinder, and control volume is anchor ring, and the matrix cylinder is connected with the control volume plane is vertical.The bubble post is made of response surface and response body, and response surface can be with stress flexural deformation in three dimensions, and the response body is gas.Response surface is connected with control volume, and the response body is in the space that response surface, matrix, control volume consist of.The bubble post is fixed on the support, and the unit is fixed on the standpipe by support, realizes on the standpipe that by one or more unit is fixed on vortex-induced vibration suppresses.
The below sets forth four parts of this device unit respectively:
(1) matrix
Matrix is a cylinder of the most close marine riser outer wall of this device, can be rigid wheel profile or contoured surface, and it can directly be exactly the outer wall of standpipe.When matrix is rigid wheel profile and response surface might touch this outline line the time, it is fully smooth that the outline line surface should be guaranteed, perhaps uses the arbitrarily surfaces of revolution, to reduce the friction between outline line and response surface as far as possible.
(2) control volume
Control volume is up and down two annular surface of device, can be made of rigid wheel profile or contoured surface.When control volume is rigid wheel profile and response surface might touch this outline line the time, the outline line surface should be guaranteed fully smooth or be used the arbitrarily surfaces of revolution, to reduce the friction between outline line and response surface as far as possible.
(3) response surface
Response surface is made of elastomeric material, radially random variation, tangentially finite deformation.The elasticity size can be selected according to actual design, even can select almost inelastic deformable material.Response surface can be coarse, also can be smooth.Response surface directly contacts with incoming flow, and gives the response body with the incoming flow force transmission.When matrix and/or control volume were outline line, response surface is the face of corresponding additional disappearance then.
(4) response body
The response body is gas or liquid, and they can be compressible, also can be incompressible.The response of response body can be out of shape (motion) in any direction from the active force of response surface.
Response body in apparatus of the present invention has the plurality of optional scheme, except being the gas, also can be liquid.The matrix of this device also can be standpipe external surface itself; This device also can be processed into an integral body with standpipe.
After adopting above-mentioned technology, apparatus of the present invention have the following advantages:
(1) make simple, cost is low, can modularization production, mounting method is flexible;
(2) can change and come stream mode, the generation of prevention vortex-induced vibration;
(3) can disperse and reduce the flow field to the active force of standpipe, when vortex-induced vibration produced, it can disperse, reduce vortex-induced vibration to the active force of standpipe.Namely be, the sharp active force in whirlpool is dispersed on the one hand and reduces, and also disturbs coming stream mode to produce on the other hand;
(4) have the function of buoyant mass concurrently, perhaps it can be designed to buoyant mass;
(5) this device can carry out integrated production with standpipe, makes standpipe itself have buoyant mass function and vortex-induced vibration inhibit feature.
Description of drawings
Fig. 1 is a unit (module) schematic diagram of this device, is that a typical structure of this device forms, and left figure is shaft section figure, and right figure is cross-sectional view.
Fig. 2 is that this device is installed at the schematic diagram on the pipe nipple in the standpipe, is exemplary device using method, and left figure is shaft section figure, and right figure is cross-sectional view.
A kind of typical using method of this device of Fig. 3 on standpipe: the vortex-induced vibration inhibit feature that uses a plurality of units in series combination realize target standpipe sections.
Among the figure, 1. standpipe, 2. shake restraining device unit, 3. matrix, 4. control volume, 5. response surface, 6. response body of bubble post whirlpool.
The specific embodiment
Apparatus of the present invention are a kind of marine environment lower standing tube bubble post whirlpool restraining devices that shake, and realize the vortex-induced vibration inhibition with the blister cylinder, and it has numerous embodiments.Bubble post whirlpool under the every kind of mode restraining device unit main body of shaking always consists of (as shown in Figure 1) by two parts of support and bubble post basically, and support is made of matrix 3 and control volume 4, and the bubble post then is made of response surface 5 and response body 6.Because the bubble post is the core that vortex-induced vibration suppresses, so this device can be called the bubble post whirlpool restraining device that shakes.The standpipe outer radius is made as R, and the matrix radius is made as r, and matrix thickness is made as d, and the response body thickness is made as D, and the control volume height is made as h.
● mode one
This is a kind of typical embodiment, and its characteristic feature is (as shown in Figure 2): integral body is made of one or more elementary cell 2, and each unit is circle ring column, and each unit needn't be identical.Each unit is made of two parts of support and bubble post.Support is made of matrix 3 and control volume 4, and matrix 3 is cylinders, and control volume 4 is anchor rings, matrix 3 cylinders and vertical connection of control volume 4 planes.The bubble post is made of response surface 6 and response body 5, and response surface 6 can be with stress flexural deformation in three dimensions, and response body 5 is gas.Response surface 6 is connected with control volume 4, and the response body is in the space that response surface 4, matrix 3, control volume 4 consist of.The bubble post is fixed on the support, and unit 2 is fixed on the standpipe 1 by support, realizes on the standpipe 1 that by one or more unit 2 is fixed on vortex-induced vibration suppresses.Unit 2 matrixes 3 directly contact with standpipe 1 outer wall, and unit matrix 3(is near a side of standing tube outer wall) radius r=R, response surface 5 radiuses are R+d+D.
This unit 2 can make separately, then is socketed in standpipe 1 external surface.By control volume 4 unit 2 is fixed on the standpipe 1, perhaps installs with reference to the mounting method of buoyant mass.
● mode two
Change the response body 6 in the mode one into liquid, the liquid little take density, that viscosity is little is as good.
● mode three
Matrix in the mode one is designed to the outer wall of standpipe 1.At this moment, the restraining device unit 2 that shakes, this bubble post whirlpool is as a whole with 1 one-tenth of standpipe.Mode two also can be applied in the manner.
● mode four
The matrix 3 of control volume is removed, with the one side replacement of bubble post.This method is paid the utmost attention to the cellular installation of unaerated (liquid) in use, again inflation (liquid) after installing.
● mode five
Control volume only is made of outline line, and the bubble post is fixed along the control volume outline line.This method is paid the utmost attention to the cellular installation of unaerated (liquid) in use, again inflation (liquid) after installing.
This device can come according to Practical Calculation the length of choice for use series unit in use fully, also can select to determine to use wherein according to sea situation.Bubble post and support can be made respectively again assembling, also can integratedly make, and then install, and can also be processed into an integral body with standpipe.
Claims (4)
1. the marine environment lower standing tube bubble post whirlpool restraining device that shakes is characterized in that: wholely substantially steep the restraining device unit (2) that shakes, post whirlpool by one or more and consist of, each unit is circle ring column, and each unit needn't be identical; Each unit is made of two parts of support and bubble post; Support is made of matrix (3) and control volume (4), and matrix (3) is cylinder, and control volume (4) is anchor ring, matrix (3) cylinder and control volume (4) the vertical connection of plane; The bubble post is made of response surface (6) and response body (5), and response surface (6) can be with stress flexural deformation in three dimensions, and response body (5) is gas; Response surface (6) is connected with control volume (4), and the response body is in the space that response surface (4), matrix (3), control volume (4) consist of; The bubble post is fixed on the support, and the restraining device unit (2) that shakes, bubble post whirlpool is fixed on the standpipe (1) by support, is fixed on the upper vortex-induced vibration of realizing of standpipe (1) by restraining device unit (2) that one or more bubble post whirlpool is shaken and suppresses.
2. the marine environment lower standing tube as claimed in claim 1 bubble post whirlpool restraining device that shakes, it is characterized in that: response body (5) is liquid.
3. the marine environment lower standing tube as claimed in claim 1 bubble post whirlpool restraining device that shakes is characterized in that: with the outer wall of standpipe (1) as matrix (3).
4. the marine environment lower standing tube as claimed in claim 1 bubble post whirlpool restraining device that shakes is characterized in that: shake restraining device unit (2) and standpipe (1) of this bubble post whirlpool is processed into an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012104874640A CN102979490A (en) | 2012-11-27 | 2012-11-27 | Bubble-column vortex-induced vibration suppression device of stand pipe under marine environment |
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| CN2012104874640A CN102979490A (en) | 2012-11-27 | 2012-11-27 | Bubble-column vortex-induced vibration suppression device of stand pipe under marine environment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883269A (en) * | 2014-04-17 | 2014-06-25 | 西南石油大学 | Offshore drilling controllable buoyant block |
| CN105378215A (en) * | 2013-09-17 | 2016-03-02 | 哈里伯顿能源服务公司 | Removal of stick-slip vibrations in a drilling assembly |
| CN110435817A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of sharp oise damping means of underwater bossy body stream |
| WO2019242195A1 (en) * | 2018-06-21 | 2019-12-26 | 北京金风科创风电设备有限公司 | Retaining structure having frequency mixing absorber at outer surface thereof |
| CN113445934A (en) * | 2021-05-28 | 2021-09-28 | 上海交通大学 | Device for restraining vortex-induced motion of ocean platform by utilizing wave force |
| CN113502741A (en) * | 2021-06-15 | 2021-10-15 | 哈尔滨工业大学 | Structure for inhibiting vortex-induced vibration of cylindrical structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113445934A (en) * | 2021-05-28 | 2021-09-28 | 上海交通大学 | Device for restraining vortex-induced motion of ocean platform by utilizing wave force |
| CN113502741A (en) * | 2021-06-15 | 2021-10-15 | 哈尔滨工业大学 | Structure for inhibiting vortex-induced vibration of cylindrical structure |
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Application publication date: 20130320 |