CN104819857B - Swash motion model experimental provision in ocean deepwater floating platform whirlpool - Google Patents
Swash motion model experimental provision in ocean deepwater floating platform whirlpool Download PDFInfo
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Abstract
Motion model experimental provision is swashed the invention discloses a kind of ocean deepwater floating platform whirlpool, mainly including support frame, vertical bindiny mechanism, the part of level connection joint mechanism three.Support frame includes head slab, top fixture and horizontal fixture.Vertical bindiny mechanism includes air floating platform, stage clip and pressure sensor.Wherein, air floating platform is made up of air compressor, compressed air air supply pipe and air bearing.Level connection joint mechanism includes mooring connecting elements, extension spring and pulling force sensor.The present invention in view of the shortcomings of the prior art, solves that the technological difficulties that exercise test is swashed in fine platform whirlpool can not be carried out.The device is applied to semisubmersible platform, tension leg platform (TLP) of field of ocean engineering etc., meet while provide vertical mooring load for deepwater floating platform, keep the technical requirements of its horizontal plane free movement, and the features such as with simple in construction, simple operation, working stability.
Description
Technical field
The present invention relates to a kind of experimental provision for field of ocean engineering, and in particular to one kind is applied to semi-submersible type
Swash motion model experimental provision in the whirlpool of the ocean deepwater floating platform such as platform, tension leg platform (TLP).
Background technology
Ocean deepwater floating platform, including semisubmersible platform, tension leg platform (TLP) etc., due to capacity of anti-storm it is strong, adapt to
The advantages of depth of water scope is wide, it has also become one of important ocean oil and gas resource exploration and exploitation equipment.However, semisubmersible platform and
Tension leg platform (TLP) is typical many column floating bodies, under the action of ocean current of deep-sea, and its column rear meeting generating period whirlpool takes off
Fall, cause fluctuation pressure to produce, and then trigger platform to produce long period, the reciprocating motion of large amplitude in the horizontal plane.It is this big
Structural strength and the fatigue life of the components such as athletic meeting influence platform anchor chain, standpipe and tension leg are swashed in the whirlpool of scope, and influence is normal
Operation on the sea.Therefore, motion study hotspot and difficult point as ocean engineering field are swashed in the whirlpool of ocean deepwater floating platform
One of.Due to complicated platform profile and external influence factors, model experiment is that mainly grinding for motion is swashed in deepwater floating platform whirlpool
Study carefully means.
To keep uniform, stable flow field, whirlpool is swashed motion model experiment and generally carried out in ship towing basin, and uses
Platform model mooring under pool trailer, is followed trailer to do and at the uniform velocity advanced by equivalent horizontal anchoring system.Due in experiment
The vertical load of original anchoring system is have ignored, traditional way is that on the basis of analog platform sole mass, increase is extra
Ballast quality, by the Reduced-scale model ballast of platform to designed water line, to compensate vertical load of the anchoring system to platform.This
The way planted actually changes the ratio between quality and displacement of platform model, influences its whirlpool to swash kinetic characteristic, and influence final
Experimental result.Therefore, swash in whirlpool in exercise testing, should ensure that the ratio between identical quality and displacement, and can not limit flat
The motion of platform in the horizontal direction.Therefore, it is necessary to which the experimental provision being designed correctly, the items of motion are swashed with accurate simulation platform whirlpool
Characteristic.
By the retrieval discovery to prior art, Chinese patent literature CN200620047162, publication date 2007 10
The moon 17, disclose a kind of open side type ocean platform whirlpool that is used for and swash motion model experimental rig, including mooring ring, mooring hole, the wing
Shape hanging column, small bracket, transverse slat, the segmentation of model mooring line, floating drum, pouring weight, equivalent riser systems, open side type offshore platform model,
Trailer, non-contact optical measuring system, pulling force sensor, strain amplifier, termination, automatic data collection card and calculating
Machine real-time analyzer.With equivalent anchoring system come the static characteristics of equivalent actual anchoring system, with equivalent riser systems come etc.
Imitate the static characteristics of actual riser system.Model mooring frame is made up of wing hanging column, mooring ring, mooring hole, small bracket and transverse slat,
The cross sectional shape of wing hanging column is airfoil, and mooring hole is uniformly distributed for one week around mooring ring.But due to residing for deepwater floating platform
The marine site depth of water it is profound, and the depth of water of each platform differs greatly, and the depth of water of ship towing basin is universal smaller, therefore the dress
Put and be difficult to simulate deep water marine environment, and structure is more heavy, it is difficult to respective depth is adjusted according to actual depth condition, it is difficult to
To effective implementation.Also, the aerofoil profile hanging column of device can produce vortex-induced vibration during the towing of exercise testing is swashed in whirlpool in water,
Influence test flow field, and cause platform model Self generating oscillations, influence experiment test precision.
The content of the invention
It is flat for ocean deepwater floating in view of the deficiencies of the prior art, the present invention provides one kind is in ship towing basin
The bath scaled model experimental device of motion is swashed in platform whirlpool, solves that the technological difficulties that exercise test is swashed in fine platform whirlpool can not be carried out.The device is expired
While foot provides vertical mooring load for deepwater floating platform, the technical requirements of its horizontal plane free movement are kept, and have
The features such as simple in construction, simple operation, working stability.
To achieve the above object, the invention provides following technical scheme：
Swash motion model experimental provision in a kind of ocean deepwater floating platform whirlpool, including support frame, vertical bindiny mechanism and
The part of level connection joint mechanism three.One end of vertical bindiny mechanism is connected to support frame, other end connecting platform model.It is similar
, one end of level connection joint mechanism is connected to support frame, other end connecting platform model.
Support frame includes head slab, top fixture, horizontal fixture, and head slab is located at top and fixes dress
Put lower section.Head slab is the metal plate of a smooth, level between top fixture and platform model, top
Portion's flat board is used for the vertical mooring load of carrying platform model.The height and levelness of top fixture can be adjusted, for adjusting
Save the levelness of platform model drinking water, vertical mooring magnitude of load and head slab.Top fixture and towing basin are dragged
Car is fixed, and is synchronized with the movement with trailer.Horizontal fixture is a horizontally disposed truss-like circular ring structure, can be in the horizontal direction
Freely, quick rotation regulation, exercise testing is swashed to adapt to the progress platform whirlpool in the case where difference carrys out flow angle.
Vertical bindiny mechanism includes air floating platform, stage clip, pressure sensor, and pressure sensor is located at air floating platform and stage clip
Between.Vertical bindiny mechanism is by the combination of air floating platform and stage clip, while vertical mooring load and mooring rigidity is ensured,
Keep that there is certain interval between air floating platform and head slab, it is to avoid the frictional force of horizontal direction, so as to avoid influenceing platform
The kinetic characteristic of model in the horizontal direction.Air floating platform is made up of air compressor, compressed air air supply pipe and air bearing,
Compressed air provides the vertical mooring load needed for platform model by air bearing.Stage clip exists for analog platform anchoring system
Mooring rigidity in vertical direction.Pressure sensor can measuring table vertical load in real time size, with accurate measurements platform
The stress of model.
Level connection joint mechanism includes mooring connecting elements, extension spring, pulling force sensor.The water that level connection joint mechanism passes through extension spring
Flat, arranged crosswise mode, and coordinate the mooring connecting elements of seemly diameter, while analog platform model level rigidity and head shake just
Spending characteristic, there is provided corresponding restoring force and torque.Mooring connecting elements is the circular metal structure of a seemly diameter, is horizontally mounted
On platform model, for connecting platform model and horizontal anchoring system, its diameter should be according to the corresponding horizontal rigidity of platform
Rigidity, which is shaken, with head integrates determination.Pulling force sensor is used for size of the real-time monitoring platform model by horizontal load.
The beneficial effects of the invention are as follows：
The present invention provides one kind in ship towing basin, and the model experiment of motion is swashed for ocean deepwater floating platform whirlpool
Device, the technological difficulties that exercise testing is swashed in fine whirlpool can not be carried out in towing basin by solving.The device meets puts down for floating
Platform provides vertical mooring load, the ratio between accurate simulation platform mass and displacement, and does not limit the skill of its horizontal motion
Art requirement, and with simple in construction, simple operation, working stability the features such as.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 swashs the side view of motion model experimental provision for the ocean deepwater floating platform whirlpool of a preferred embodiment of the present invention
Schematic diagram；
Fig. 2 is the schematic top plan view of the sharp motion model experimental provision in ocean deepwater floating platform whirlpool shown in Fig. 1；
Fig. 3 is the vertical view signal of another state of the sharp motion model experimental provision in ocean deepwater floating platform whirlpool shown in Fig. 1
Figure；
Fig. 4 swashs the vertical of motion model experimental provision for the ocean deepwater floating platform whirlpool of a preferred embodiment of the present invention
Bindiny mechanism's schematic diagram.
Embodiment
Example below is that the present invention is described in further detail, embodiment be using technical solution of the present invention before
Put and implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to down
State embodiment.
Fig. 1 is that the integrally-built schematic side view of motion model experimental provision is swashed in ocean deepwater floating platform whirlpool.Experiment dress
Put the vertical bindiny mechanism 3 including support frame 2, for connecting platform model 1, the level connection joint for connecting platform model 1
The part of mechanism 4 three.Support frame 2 includes head slab 21, top fixture 22, horizontal fixture 23.Head slab 21
For level, a smooth metal plate between top fixture 22 and platform model 1, for carrying platform mould
The vertical mooring load of type 1.Top fixture 22 and the trailer 5 of towing basin are fixed, and are synchronized with the movement with trailer 5, trailer 5 exists
Moved on carriage track 6.The height and levelness of top fixture 22 can be adjusted, and absorbed water, hung down for adjusting platform model 1
To the levelness of mooring magnitude of load and head slab 21.Horizontal fixture 23, which is provided, installs equivalent horizontal anchoring system,
And fixed with the trailer 5 of towing basin, it is synchronized with the movement with trailer 5.Horizontal fixture 23 is a horizontally disposed truss-like circle
Ring structure, free in the horizontal direction, quick can rotate regulation, the sharp fortune in platform whirlpool is carried out in the case where difference carrys out flow angle to facilitate
Dynamic experiment.Fig. 2 is two kinds of different setting states that motion model experimental provision is swashed in ocean deepwater floating platform whirlpool respectively with Fig. 3
Schematic top plan view.Under two states, platform model 1 is different from come the angle that flows, and arrow meaning is drag direction.
Fig. 4 is the structural representation of vertical bindiny mechanism 3.Vertical bindiny mechanism 3 includes air floating platform 31, stage clip 32, pressure
Force snesor 33, vertical bindiny mechanism 3 is connected by bottom bindiny mechanism 34 with platform model 1.Air floating platform 31 is by air pressure
Contracting machine, compressed air air supply pipe and air bearing composition, compressed air can provide hanging down needed for platform model by air bearing
To mooring load.Stage clip 32 is used for the mooring rigidity of analog platform anchoring system in vertical direction.Pressure sensor 33 can be with
Real-time measuring table vertical load size, with the stress of accurate measurements platform model 1.Pass through air floating platform 31 and stage clip 32
Combination, while vertical mooring load and mooring rigidity is ensured, keep having between air floating platform 31 and head slab 21
Certain interval, it is to avoid the frictional force of horizontal direction, so as to avoid influenceing the kinetic characteristic of platform model 1 in the horizontal direction.
Level connection joint mechanism 4 includes mooring connecting elements, extension spring, pulling force sensor.Mooring connecting elements is one appropriate straight
The circular metal structure in footpath, is horizontally installed on platform model 1, and for connecting platform model 1 and horizontal anchoring system, its is straight
Footpath should shake rigidity according to the corresponding horizontal rigidity of platform and head and integrate determination.Pass through extension spring level, arranged crosswise side each other
Formula, coordinate seemly diameter mooring connecting elements can the horizontal rigidity and head of analog platform model 1 simultaneously shake rigidity there is provided phase
The restoring force and torque answered.Pulling force sensor is used for the size of horizontal load suffered by real-time monitoring platform model 1.
The application method for the ocean deepwater floating platform torrent motion model experimental provision that the present embodiment is provided is as follows：
Weight center of gravity will be regulated, the test platform model 1 of inertia is lifted in towing basin, and by top fixture
22 and horizontal fixture 23 be fixedly connected with towing basin trailer 5.Extension spring and pulling force sensor with four arranged crosswises,
Platform model 1 is connected with horizontal fixture 23 in horizontal direction, it is ensured that two ends level altitude is consistent, long by adjusting extension spring
Degree, it is ensured that meet horizontal pretension requirement.In vertical direction, test platform model 1 and top are fixed for vertical bindiny mechanism 3
Device 22 is connected, by adjusting the height of top fixture 22, the drinking water requirement of test platform model 1 is met, by adjusting stage clip
33, it is met vertical pretension requirement.Start air compressor, start trailer 5, make test platform under the drive of trailer 5
Advance by defined speed, and record the motion of test platform and stressing conditions during towage.By changing level connection joint
The fixed-direction of mechanism 4, so as to change test platform model 1 with come the angle that flows, repeating above-mentioned experimentation.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (9)
1. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool, it is characterised in that the experimental provision includes branch
Support frame frame, the vertical bindiny mechanism for connecting platform model, the part of level connection joint mechanism three for connecting platform model, institute
Stating support frame includes horizontal fixture, and the horizontal fixture is a horizontally disposed truss-like circular ring structure, described
Truss-like circular ring structure free in the horizontal direction, quick can rotate regulation, to adapt to carry out platform in the case where difference carrys out flow angle
Swash exercise testing in whirlpool.
2. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 1, it is characterised in that
The support frame also includes head slab, top fixture, and the head slab is located at below the top fixture.
3. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 2, it is characterised in that
The head slab is put down for smooth, level a metal between the top fixture and the platform model
Plate, the head slab is used to carry the vertical mooring load of the platform model.
4. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 2, it is characterised in that
The height and levelness of the top fixture can be adjusted, for adjusting the platform model drinking water, vertical mooring load
The levelness of size and the head slab.
5. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 2, it is characterised in that
The vertical bindiny mechanism include air floating platform, stage clip, pressure sensor, the pressure sensor be located at the air floating platform and
Between the stage clip.
6. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 5, it is characterised in that
The vertical bindiny mechanism is ensureing vertical mooring load and mooring rigidity by the combination of the air floating platform and the stage clip
While, keep that there is certain interval between the air floating platform and the head slab, it is to avoid the frictional force of horizontal direction, from
And avoid influenceing the kinetic characteristic of the platform model in the horizontal direction.
7. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 5, it is characterised in that
The air floating platform is made up of air compressor, compressed air air supply pipe and air bearing, and compressed air passes through the air axle
Vertical mooring load needed for the offer platform model is provided.
8. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 1, it is characterised in that
The level connection joint mechanism includes mooring connecting elements, extension spring, pulling force sensor.
9. motion model experimental provision is swashed in a kind of ocean deepwater floating platform whirlpool according to claim 8, it is characterised in that
Level, arranged crosswise mode of the level connection joint mechanism by the extension spring, and coordinate the mooring of seemly diameter to connect
Component, while simulating the platform model horizontal rigidity and head shakes stiffness characteristics there is provided corresponding restoring force and torque.
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| CN106542050B (en) * | 2016-11-08 | 2018-05-22 | 上海交通大学 | A kind of tension leg platform (TLP) model mooring gear |
| CN106644383B (en) * | 2016-12-28 | 2023-03-24 | 大连理工大学 | Variable-scale variable-structure semi-submersible wave power generation platform test device |
| CN108414191A (en) * | 2018-02-09 | 2018-08-17 | 山东交通学院 | It is a kind of to consider that motion analysis system and method are swashed in the floating cylinder whirlpool that draw ratio influences |
| CN109696293B (en) * | 2019-01-23 | 2019-12-10 | 上海交通大学 | Deep sea multi-column type mooring floating platform vortex-induced motion water tank test device |
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| CN111122142B (en) * | 2020-01-14 | 2023-12-19 | 浙江大学 | Experimental device and method for researching dynamic response and flow field characteristics of anchor chain under cyclic motion |
| CN111366332B (en) * | 2020-04-28 | 2022-09-16 | 中山大学 | Three-degree-of-freedom decomposition mooring structure measurement experimental device |
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| CN113340562A (en) * | 2021-06-28 | 2021-09-03 | 上海交通大学 | Test device for vortex-induced motion water pool of tension leg platform |
| CN113371151B (en) * | 2021-06-29 | 2022-06-07 | 天津大学 | Tension leg platform vortex-induced motion pool model experimental device |
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| US7316525B2 (en) * | 2005-01-07 | 2008-01-08 | Shell Oil Company | Vortex induced vibration optimizing system |
| CN200962068Y (en) * | 2006-10-26 | 2007-10-17 | 上海交通大学 | Test device of single pole ocean platform whirl motion model |
| CN100494943C (en) * | 2007-07-12 | 2009-06-03 | 上海交通大学 | Vortex vibration testing device for flexible pipe mould horizontal in towing pool |
| CN102305696B (en) * | 2011-08-02 | 2013-06-19 | 上海交通大学 | Deep sea vertical pipe array model vortex-induced vibration test device with top capable of moving in step flow |
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