CN101666703B - Forced reciprocating movement device of ocean structure - Google Patents
Forced reciprocating movement device of ocean structure Download PDFInfo
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- CN101666703B CN101666703B CN2009101951338A CN200910195133A CN101666703B CN 101666703 B CN101666703 B CN 101666703B CN 2009101951338 A CN2009101951338 A CN 2009101951338A CN 200910195133 A CN200910195133 A CN 200910195133A CN 101666703 B CN101666703 B CN 101666703B
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Abstract
A forced reciprocating movement device of ocean structure in the technical field of ocean engineering includes: a base, a straight track, a sliding block, a driving motor and a speed reducer, wherein the base is parallelly fixed on the bottom of a trailer, the straight track is fixedly arranged on the lower surface of the base, and the sliding block moves on the straight track by means of pinion and rack and is provided with the driving motor and a planetary speed reducer. The device can fix the ocean structure on the bottom of the sliding block, is driven to do reciprocating movement on the straight track by the driving motor and simulate the phenomena of vortex-induced vibration and vortex-induced movement, and is simple in structure and high in automation degree.
Description
Technical field
What the present invention relates to is a kind of test unit of field of ocean engineering, specifically is a kind of forced reciprocating movement device of ocean structure.
Background technology
Motion is swashed in the whirlpools of large scale deep water offshore engineering structure under wave, action of ocean current such as semisubmersible platform, SPAR platform, TLP platform, floating drum, and small scale member such as ocean platform spud leg, anchor chain, standpipe under wave, action of ocean current vortex-induced vibration, all be the forward position research topic that current oceanographic engineering field is paid close attention to.The same with self-sustained oscillation, forced oscillation simulation and experiment also are important research contents wherein.At present, model test is that one of valid approach of motion and vortex-induced vibration is swashed in the research whirlpool, can obtain the hydrodynamic force coefficient of ocean engineering structure under wave, ocean current and the two coupling by model test, comprise quality coefficient and resistance coefficient etc., with and with the Changing Pattern of different Re numbers, different K C number, these test datas for accurate forecast exercise performance and environmental load, improve and theoretically all have great importance with method for numerical simulation and means.
The original forced reciprocating movement test unit in laboratory has obvious limitation: motion amplitude is less, only 1m; Structure is thin, can only carry out the experiment of small-scale structure model; Function singleness can only be used to simulate vortex-induced vibration, swashs motion and can not simulate the whirlpool.This set of model can not adapt to the ocean deepwater test tank and swash motion simulation and experimental requirements for current marine structure vortex-induced vibration, whirlpool.
Find that through retrieval similar device of the prior art comprises to prior art: number of patent application 200710043697.0, patent name is: the vortex vibration testing device that is horizontally placed on flexible pipe mould in the towing basin; Number of patent application 200710043696.6, patent name is: the vortex vibration testing device that is vertically to flexible pipe mould in the towing basin; Number of patent application 200620047162.1, patent name is: the motion model test unit is swashed in open side type ocean platform whirlpool.Above-mentioned the deficiencies in the prior art part is: (1) measurement target is single, can only simulate the whirlpool and swash motion or vortex-induced vibration; (2) thus all needing to start main equipments such as trailer tests in towing basin.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of forced reciprocating movement device of ocean structure is provided, make that move distance extends significantly in the model test, load-bearing capacity increases substantially, and can realize that institute's link model is by given amplitude, cycle, the automatic reciprocating vibratory movement of mode.
The present invention is achieved through the following technical solutions, the present invention includes: base, rectilinear orbit, slide block, drive motor and speed reduction unit, wherein: the base secured in parallel is in the trailer bottom, rectilinear orbit is fixedly set in the lower surface of base, slide block moves on rectilinear orbit by the mode of rack-and-pinion, and drive motor and planetary reduction gear are installed on the slide block.
The long 7.5m of described rectilinear orbit moves on rectilinear orbit by the mode of rack-and-pinion
It is 9000NM that the maximum of described slide block is born moment of torsion, and maximum operational speed is 3.0m/s, and this slide block is by mode smooth motion on rectilinear orbit of rack-and-pinion.Drive motor and planetary reduction gear are installed on the slide block.Slider bottom is provided with bolt to connect the marine structure test model.
The maximum pull of described drive motor is 650kg, and drive motor is provided with the cabling drag chain that length is 16m, and the two ends of this cabling drag chain link to each other with the computing machine of drive motor 4 with power supply and control motor respectively.
During work, model is fixed under the motion slide block, open drive motor and speed reduction unit, drive slide block significantly to-and-fro movement or slightly vibration on line slide rail, simulate the vortex-induced vibration that motion and small scale member are swashed in the whirlpool of large scale deep water offshore engineering structure under wave, action of ocean current with this.
The present invention compared with prior art has the following advantages: can realize that 1) institute's link model is by given amplitude, cycle, the automatic reciprocating vibratory movement of mode, mode of motion comprises sinusoidal motion etc., can self-defined so both can simulate vortex-induced vibration and also can simulate the sharp motion in whirlpool, both can realize the high speed vibratory movement (maximal rate 3m/s) under the little loading condition, also can realize the vibratory movement (maximal rate 1.5m/s) under the heavy load situation; 2) carry drive motor, therefore do not need external units such as trailer; 3) effective exercise distance can reach 6m, than previous 1m coverage increase substantially; 4) vertical load can reach 300kg, and horizontal load can reach 400kg, improves a lot than design at present equally, therefore is applicable to the test of large-sized deep water engineering structure.In sum, visible the present invention can be applicable to the needs of various deep water engineering structure vortex-induced vibrations, the sharp motion simulation in whirlpool and experiment.Can be used for measuring and regulating the parameter of multiple ocean engineering structure models such as ship class, FPSO, semi-submersible rig, SPAR platform.
Description of drawings
Fig. 1 is a general illustration of the present invention.
Fig. 2 is a front schematic view of the present invention.
Fig. 3 is a schematic top plan view of the present invention.
Fig. 4 is a schematic side view of the present invention.
Fig. 5 is a work synoptic diagram of the present invention.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: 4 bases 1, rectilinear orbit 2, slide block 3, drive motor 4 and speed reduction units 5, wherein: 4 base 1 difference vertical fixing are in trailer 9 bottoms, rectilinear orbit 2 is fixedly set in the lower surface of 4 bases 1, slide block 3 is arranged on the rectilinear orbit 2, and drive motor 4 is connected with slide block 3 respectively with planetary reduction gear 5.
The lower surface of described base 1 is on the same horizontal line, and its lower surface center all is on the same straight line simultaneously, to guarantee that rectilinear orbit 2 is on same surface level.
Described rectilinear orbit 2 long 7.5m have tooth bar in the length range of side.
It is 9000NM that the maximum of described slide block 3 is born moment of torsion, maximum operational speed is 3.0m/s, this slide block 3 is connected with rectilinear orbit 2 with the form of rack-and-pinion, and drive motor 4 and planetary reduction gear 5 are installed above, and its bottom is provided with bolt and connects the marine structure test model.
Described drive motor 4 is provided with the cabling drag chain 6 that length is 16m, and the two ends of this cabling drag chain 6 link to each other with the computing machine of drive motor 4 with power supply and control motor respectively.
During work, marine structure forced reciprocating movement test unit needs level to be installed in Water Plane 8 tops, and keeps a determining deviation.Base 1 need closely be connected fixed component (for example trailer 9) bottom of Water Plane top, occurs skew when avoiding line slide rail 2 is installed.As shown in Figure 5, whole system is installed in below the trailer 9, the model of using in 3 times installation tests of motion slide block 7 then makes model waterline and Water Plane 8 alignment, then opens drive motor 4, can drive model 7 double vibrations and vibratory movement in water.Simulate vortex-induced vibration and the whirlpool of marine structure in the ocean with this and swash motion.
Claims (6)
1. forced reciprocating movement device of ocean structure, comprise: base, rectilinear orbit, slide block, drive motor and planetary reduction gear, it is characterized in that: the base secured in parallel is in the trailer bottom, rectilinear orbit is fixedly set in the lower surface of base, slide block moves on rectilinear orbit by the mode of rack-and-pinion, and drive motor and planetary reduction gear are installed on the slide block.
2. forced reciprocating movement device of ocean structure according to claim 1 is characterized in that, the long 7.5m of described rectilinear orbit, and described slide block moves on rectilinear orbit by the mode of rack-and-pinion.
3. forced reciprocating movement device of ocean structure according to claim 1 is characterized in that, it is 9000NM that the maximum of described slide block is born moment of torsion, and maximum operational speed is 3.0m/s.
4. forced reciprocating movement device of ocean structure according to claim 1 is characterized in that, described slider bottom is provided with bolt to connect the marine structure test model.
5. forced reciprocating movement device of ocean structure according to claim 1 is characterized in that, the maximum pull of described drive motor is 650kg.
6. forced reciprocating movement device of ocean structure according to claim 5 is characterized in that, described drive motor is provided with the cabling drag chain that length is 16m, and the two ends of this cabling drag chain link to each other with the computing machine of drive motor with power supply and control motor respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101951338A CN101666703B (en) | 2009-09-04 | 2009-09-04 | Forced reciprocating movement device of ocean structure |
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| CN2009101951338A CN101666703B (en) | 2009-09-04 | 2009-09-04 | Forced reciprocating movement device of ocean structure |
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| CN101666703A CN101666703A (en) | 2010-03-10 |
| CN101666703B true CN101666703B (en) | 2011-08-31 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410918B (en) * | 2011-08-02 | 2013-07-17 | 上海交通大学 | Vortex-induced vibration simulation test device for deep sea riser model with movable top end under uniform flow |
| CN102359854B (en) * | 2011-08-12 | 2013-09-25 | 上海交通大学 | Horizontal forced vibration experimental device for sectional models of FISHFRAM float bowls flowing down uniformly |
| CN102359856B (en) * | 2011-08-12 | 2013-06-19 | 上海交通大学 | Bidirectional forced vibration experimental apparatus of segmented model of FISHFARM float bowl under uniform flow |
| CN102323031B (en) * | 2011-08-12 | 2013-08-28 | 上海交通大学 | Deep-sea pipeline segmented model bidirectional forced vibration experimental device under action of uniform flow |
| CN102323032B (en) * | 2011-08-12 | 2013-08-28 | 上海交通大学 | Oblique uniform flow deep sea pipeline segment model bidirectional forced vibration experiment apparatus |
| CN102323028B (en) * | 2011-08-15 | 2013-09-25 | 上海交通大学 | Deep-sea riser segmented model forward flow forced vibration experimental device under action of uniform flow |
| CN102323030B (en) * | 2011-08-15 | 2013-09-25 | 上海交通大学 | Deep-sea riser segmented model vertical flow forced vibration experimental device under action of uniform flow |
| CN104111159B (en) * | 2014-07-28 | 2016-09-28 | 中国船舶重工集团公司第七○二研究所 | Hydrodynamic adjustment measurement apparatus between many ships |
| CN105277337A (en) * | 2015-11-25 | 2016-01-27 | 中国海洋石油总公司 | Test apparatus for simulating undersea pipeline-laying process of J type pipe-laying ship |
| CN105865976A (en) * | 2016-05-25 | 2016-08-17 | 上海交通大学 | Ocean structure fine model viscosity performance test platform |
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