CN208076120U - A kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device - Google Patents
A kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device Download PDFInfo
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- CN208076120U CN208076120U CN201820434725.5U CN201820434725U CN208076120U CN 208076120 U CN208076120 U CN 208076120U CN 201820434725 U CN201820434725 U CN 201820434725U CN 208076120 U CN208076120 U CN 208076120U
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- bottom tray
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- catenary riser
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Abstract
The utility model is related to a kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental devices, it is characterised in that：Including a trailer, a saddle, a bottom tray, a limiter, a fixed pulley, a steel wire rope, a steel plate, a L-type operating platform, a single solid steel tubulation and a right angle vertical lamellae combination, a variable tension system, two universal hinges and multiple acceleration transducers.Trailer is welded with saddle, and saddle is bolted with bottom tray, the affixed L-shaped operating platform in saddle top, and long side axis line position fixes a single solid steel tubulation and a right angle vertical lamellae combination and a fixed pulley is fixed at remote branch of a clan pipe support end；Limiter is installed in bottom tray, and limit hole is arranged in in-between lower part；Simultaneously a catenary riser model is arranged in the remote one universal hinge of right-angle side centre position installation of bottom tray between fixed pulley；Variable tension system includes a pulling force sensor, a stretcher and an electric push rod.
Description
Technical field
The present invention relates to a kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental devices, especially with regard to one
The vortex-induced vibration experimental provision of the kind smaller catenary riser model of deep-sea high-fineness ratio bending stiffness.
Background technology
Marine riser is the key structure for connecting floating platform and underwater drilling system.Due to deepwater environment complexity and
The influence of the factors such as the diversity of pipeline construction, under the action of ocean current, cylindrical structure both sides will appear alternate vortex shedding,
The fluid force for generating mechanical periodicity makes standpipe generate vibration, and standpipe vibration reacts on flow field again, Gu this typical stream-coupling
It closes phenomenon and is known as " vortex-induced vibration ".Deepwater Risers easily cause to damage under the influence of vortex-induced vibration.In order to reduce vortex-induced vibration pair
The damage of compliant riser, top priority are to understand the vortex-induced vibration mechanism of compliant riser under various hydrodynamic environments in depth.It opens
The vortex-induced vibration physical model experiment of exhibition high-fineness ratio catenary riser model is one of effective means at this stage, its energy
Judgment basis enough is provided for the accuracy of numerical simulation, forms the accuracys such as viscous force, mass ratio, damping ratio, axial tensile force more
High, coverage area bigger vortex-induced vibration force coefficient database provides data foundation for practical engineering application analysis.
In past more than 100 years vortex-induced vibration oneself through obtaining the extensive research of scholar all over the world.About column whirlpool
The Frequency Locking of excited vibration, excites phenomena such as mode, wake flow pattern to be solved well in theory at maximum power response
It releases.Research majority for elongated flexible pipe is the research to elongated vertical compliant riser and rigid catenary (SCR).In recent years
Come, Vandiver observed to be flowed down in shearing, and the locking of different modalities may occur at high-fineness ratio standpipe different location
Phenomenon.Vandiver is proposed simultaneously, when locking generation, is changed to since the variation of axial tensile force may result in first-order modal
Another first-order modal.For steel catenary riser, Larsen etc. has carried out time domain and frequency domain to the vortex-induced vibration of steel catenary riser
Interior analysis.The perfect reduced-order model studied in catenary riser vortex-induced vibration in ocean current such as Srinil.For opening in the past
The catenary riser model test of exhibition is not stinted to keep the stretched wire line morphology of SCR and increases the bending stiffness of riser model and neglect
Depending on science than the riser model rigidity that ruler defines, tremendous influence is caused to the accuracy of experiment in this way；Current standpipe both domestic and external
In model test, rarely has and both consider that seaway load has the vortex-induced vibration experimental study for considering flow velocity load, this and Practical Project ring
Border deviates from, and " a kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device " provided by the invention can be effective
Solve the problems, such as this；On the other hand, due to testing in smaller catenary riser model test used, standpipe can be under the action of stream
Larger global displacement occurs and catenary posture can not be retained, the limiter of catenary touchdown point can not only keep standpipe catenary
Posture, and its elastic connection setting with standpipe can effectively simulate silt in actual condition and contact to earth to standpipe the friction of pipeline section
Power and suction.
Invention content
In view of the above problems, the utility model is intended to provide a kind of deep-sea high-fineness ratio catenary riser whirlpool of firm stabilization
Excited vibration bath scaled model experimental device.This experimental provision can in actual physics model test authentic and valid simulation high-fineness ratio stretched wire
The vortex-induced vibration characteristic of line riser model.
To achieve the above object, the present invention takes the technical solution to be：It is outstanding that the utility model is related to a kind of deep-sea high-fineness ratios
Chain line standpipe vortex-induced vibration bath scaled model experimental device, it is characterised in that：The experimental provision includes a trailer, a saddle, a bottom
Portion's pallet, a limiter, a fixed pulley, a steel wire rope, a steel plate, a L-type operating platform, a single solid steel tubulation and a right angle are perpendicular
To lath combination, a variable tension system, two universal hinges and multiple acceleration transducers；The trailer is in both ends retaining rail
Operation on road, intermediate position connect a steel plate moving up and down, and steel plate is welded with saddle；The saddle front view is
Right-angled trapezium side view is rectangle, and saddle is fixedly connected by bolt with trailer bottom end with bottom tray；The bottom tray
Saddle bottom surface is covered, universal hinge is installed in the remote right-angle side centre position of bottom tray；The limiter is installed on bottom tray
On, limit hole is arranged in lower part among limiter；The affixed L-shaped operating platform in saddle top, the L-shaped operating platform long side
Axis line position fixes a right angle vertical lamellae, and vertical lamellae remote branch of a clan pipe support end passes through a single solid steel rounding pipe, pipe top solid
A fixed fixed pulley；A catenary riser is set between the remote universal hinge in right-angle side centre position of bottom tray and the fixed pulley
Model；The steel wire rope around fixed pulley be connected with a threaded screw again with one it is universal be hinged, it is universal hinge again with riser model
Connection；The variable tension system is included in a pulling force sensor, a stretcher, an electric push-and-pull, the steel wire rope and pulling force
Sensor is connected, and stretcher is fixed on a steel cord, and steel wire rope is connected around fixed pulley with electric push rod.
Catenary riser model top with it is described it is universal be hinged, universal hinge connect again with a threaded screw and with around
Cross the steel wire rope connection of fixed pulley, the other end of steel wire rope around fixed pulley connection pulling force sensor, stretcher finally again with electricity
Dynamic push-pull rod connection；Catenary riser model bottom end right-angle side remote with bottom tray centre position is universal to be hinged,
Touchdown point passes through the limit hole on the limiter, the limiter to connect with bottom tray controlled elasticity coefficient spring
It connects, the controlled elasticity coefficient spring is equidistantly fixedly connected with the bottom tray by bolt.The controlled elasticity coefficient
Spring is equidistantly fixedly connected with the bottom tray by bolt.
After the present invention takes above-mentioned technical proposal, have the advantage that：1, due to present invention employs variable tension system,
Deep-sea catenary riser vortex-induced vibration phenomenon can be effectively simulated, electric push rod bypasses fixed pulley and riser model by steel wire rope
Connection can effectively reduce interference of the electric push rod vibration to riser model vortex-induced vibration without being directly connected with standpipe.2, by
So that catenary riser is placed vertically rather than laterally disposed in the present invention, is more nearly with practical sea situation, analog result is more acurrate.
3, due to the setting of limiter, allow to use the smaller riser model of bending stiffness, but also the elasticity of limiter in not only testing
The interaction force of catenary riser touchdown point and silt can be simulated by being arranged.4, the present invention can be passed through by tension system to steel wire
Rope is acted on initially pushes up tension and pulling force to catenary riser model, while hanging down by adjusting limiter and riser model hitch point
Straight distance adapts to the suspension inclination angle of catenary riser.
Description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model tension system structural schematic diagram.
Fig. 3 is the utility model riser model 3 dimensional drawing.
Specific implementation mode:
The utility model includes a trailer 1, a saddle 2, a bottom tray 7, a limiter 4, a fixed pulley 5, a steel
Cord 10,6, one catenary riser model 8 of the universal hinge of a L-type operating platform 9, two, a steel plate 3 and multiple acceleration pass
Sensor, a single solid steel tubulation and a right angle vertical lamellae combination, a variable tension system, the variable tension system include an electricity
Dynamic push-pull rod 13, a pulling force sensor 11 and a stretcher 12.Trailer 1 and ground keeping parallelism, by one it is bolted can
The vertical steel plate with saddle of adjustment height weld up and down, and are fixed along it track operation.Saddle 2 by rectangle truss welding and
Cheng Bingyu bottom trays are equidistantly affixed by bolt.In experimentation, since the height adjustability of steel plate 3 can be controlled effectively
The underwater penetration of riser model, saddle drive outstanding alignment riser model to simulate marine wave, stream pair with the movement of trailer
The effect of marine riser.
Affixed 2 top of saddle is a L-shaped operating platform 9, and it is solid that 9 long side axis line position of L-shaped operating platform fixes one
Steel pipe and a right angle vertical lamellae combination；At the beginning of electric push rod 13 can give catenary riser model 8 one by push-and-pull action
Beginning active force can also control position and the angle of vertical standpipe simultaneously.
Saddle is fixedly connected by bolt with trailer bottom end with bottom tray；Limiter passes through controlled elasticity coefficient spring
It is installed in bottom tray, limit hole is arranged in lower part among limiter, and riser model touchdown point passes through limiter, to realize
The effect of fixed riser model.Bottom tray covers saddle bottom surface, and the remote right-angle side centre position of bottom tray arranges 10,000
To hinge, a catenary riser model, catenary riser model right-angle side remote with bottom tray are set between universal hinge and fixed pulley
The universal hinge of position is hinged and is then hinged with the universal of upper suspension by the limit hole of limiter, upper suspension it is universal
It is hinged a threaded screw, then is connect with the steel wire rope so that is ensured again while catenary riser is fixed with experimental provision
Riser end moment of flexure is zero.
Variable tension system is included in the electric push rod vertically concatenated, a pulling force sensor and a tensioning
Device.Steel wire rope is connected with pulling force sensor, and stretcher is fixed on a steel cord, and steel wire rope bypasses fixed pulley and electric push rod phase
Even.Electric push rod is connected with steel wire, and the steel wire rope applied force around fixed pulley is pulled to be tensioned in catenary riser by adjusting
Device provides initial prestress for the catenary riser model in experiment.
An acceleration transducer is arranged at 60 centimeters in catenary riser model, for measure different Load Combinations,
The motion conditions of riser model in the case of different operating modes, to study high-fineness ratio catenary riser Combined Wave-Current lower standing tube
The vortex-induced vibration of model.
Claims (2)
1. a kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device, it is characterised in that：The experimental provision
It is flat including a trailer, a saddle, a bottom tray, a limiter, a fixed pulley, a steel wire rope, a steel plate, L-shaped operation
Platform, a single solid steel tubulation and a right angle vertical lamellae combination, a variable tension system, two universal hinges and multiple acceleration pass
Sensor；Operation of the trailer on the trapped orbit of both ends, intermediate position connect a steel plate moving up and down, steel plate and branch pipe
Frame welds；The saddle front view is that right-angled trapezium side view is rectangle, and saddle passes through bolt and trailer with bottom tray
Bottom end is fixedly connected；The bottom tray covers saddle bottom surface, and universal hinge is installed in the remote right-angle side centre position of bottom tray；
The limiter is installed in bottom tray, and limit hole is arranged in lower part among limiter；The affixed L-shaped operation in saddle top
Platform, the L-shaped operating platform long side axis line position fix a right angle vertical lamellae, and vertical lamellae remote branch of a clan pipe support end passes through one
A fixed pulley is fixed on single solid steel rounding pipe, pipe top；The universal hinge in the remote right-angle side centre position of the bottom tray with it is described fixed
One catenary riser model is set between pulley；The steel wire rope around fixed pulley be connected with a threaded screw again with a universal hinge
Connection, universal hinge are connect with riser model again；The variable tension system is included in a pulling force sensor, a stretcher, an electricity
Dynamic push-and-pull, the steel wire rope are connected with pulling force sensor, stretcher fixation on a steel cord, steel wire rope bypass fixed pulley with it is electronic
Push-pull rod is connected.
2. a kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device according to claim 1, special
Sign be catenary riser model top with it is described it is universal be hinged, universal hinge be connected again with a threaded screw finally again with around
Cross the steel wire rope connection of fixed pulley；Catenary riser model bottom end right-angle side remote with bottom tray centre position is universal
It is hinged, touchdown point passes through the limit hole on the limiter；The limiter and bottom tray controlled elasticity system
Number spring connection, the controlled elasticity coefficient spring are equidistantly fixedly connected with the bottom tray by bolt.
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| CN201820434725.5U CN208076120U (en) | 2018-03-29 | 2018-03-29 | A kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device |
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|---|---|---|---|
| CN201820434725.5U CN208076120U (en) | 2018-03-29 | 2018-03-29 | A kind of deep-sea high-fineness ratio catenary riser vortex-induced vibration bath scaled model experimental device |
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| CN208076120U true CN208076120U (en) | 2018-11-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632223A (en) * | 2018-12-05 | 2019-04-16 | 西南石油大学 | A kind of experimental rig and its method of the simulation without drilling rod vibratory response in marine riser marine drilling system |
| CN110046451A (en) * | 2019-04-25 | 2019-07-23 | 西南石油大学 | Varied tention elongated flexible vortex-induced vibration of cylinder response prediction method |
| CN110749418A (en) * | 2019-11-21 | 2020-02-04 | 中国海洋大学 | Marine umbilical cable vortex-induced vibration test device and method |
| CN113486546A (en) * | 2021-06-03 | 2021-10-08 | 海洋石油工程股份有限公司 | Design method for realizing self-limiting of small-caliber steel catenary riser |
| CN115014680A (en) * | 2022-06-17 | 2022-09-06 | 中海石油(中国)有限公司 | Vortex-induced vibration test device for steel catenary riser model |
-
2018
- 2018-03-29 CN CN201820434725.5U patent/CN208076120U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632223A (en) * | 2018-12-05 | 2019-04-16 | 西南石油大学 | A kind of experimental rig and its method of the simulation without drilling rod vibratory response in marine riser marine drilling system |
| CN109632223B (en) * | 2018-12-05 | 2020-10-27 | 西南石油大学 | Test device and method for simulating drill pipe vibration response in marine drilling system without marine riser |
| CN110046451A (en) * | 2019-04-25 | 2019-07-23 | 西南石油大学 | Varied tention elongated flexible vortex-induced vibration of cylinder response prediction method |
| CN110749418A (en) * | 2019-11-21 | 2020-02-04 | 中国海洋大学 | Marine umbilical cable vortex-induced vibration test device and method |
| CN113486546A (en) * | 2021-06-03 | 2021-10-08 | 海洋石油工程股份有限公司 | Design method for realizing self-limiting of small-caliber steel catenary riser |
| CN115014680A (en) * | 2022-06-17 | 2022-09-06 | 中海石油(中国)有限公司 | Vortex-induced vibration test device for steel catenary riser model |
| CN115014680B (en) * | 2022-06-17 | 2024-10-22 | 中海石油(中国)有限公司 | Vortex-induced vibration test device for steel catenary riser model |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |