CN102053001B - Device for testing vortex-excited oscillation and rotation of vertical riser pipe under uniform flow and stepped uniform flow - Google Patents
Device for testing vortex-excited oscillation and rotation of vertical riser pipe under uniform flow and stepped uniform flow Download PDFInfo
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Abstract
The invention relates to a device for testing vortex-excited oscillation and rotation of a vertical riser pipe under a uniform flow and a stepped uniform flow, belonging to the technical field of ocean engineering. The device comprises a riser pipe model mechanism, a measurement and analysis system platform module, a driving module, a top cantilever module, a bottom cantilever module, a cylindrical shaft segmentation module and a bottom support module, wherein the riser pipe model mechanism is fixedly arranged between the bottom cantilever module and the top cantilever module; the cylindrical shaft segmentation module is perpendicularly arranged in a deep ocean engineering pool and is respectively and perpendicularly connected with the bottom support module, the driving module and the top cantilever module; the bottom support module is fixedly arranged on a lifting bottom; the driving module is respectively connected with the cylindrical shaft segmentation module and the top cantilever module; the left end and the right end of the top cantilever module are respectively connected with the cylindrical shaft segmentation module; and the measurement and analysis system platform module is respectively connected with a riser pipe model, the top cantilever module and the bottom cantilever module. By using the invention, the uniform or stepped flow field of a riser pipe with an actual size can be simulated.
Description
Technical field
What the present invention relates to is a kind of device of field of ocean engineering, specifically a kind of perpendicular rotary testing device for vortex-induced vibration of oceanographic engineering swimmer's pool compliant riser model under uniform flow and cascade flow that be placed in.
Background technology
According to fluid mechanics knowledge, the column structure thing is placed in the middle of the incoming flow of certain speed, the whirlpool can occur alternately to rush down in its both sides.Be associated with generation and the bleed off of whirlpool, cylinder can be subject to laterally and the fluctuation pressure that flows to.If this moment, cylinder was resiliency supported, Pulsating Flow muscle power can cause the vibration of cylinder so, and the vibration of cylinder can change its wake structure again conversely.The problem of this fluidic structures phase interaction is called vortex-induced vibration.For example under the effect of ocean current, be suspended on the flexible pipe such as floating drum, mooring hawser of marine ocean platform standpipe, towing cable, subsea pipeline, spar platform and the vortex-induced vibration phenomenon can occur, will cause the fatigure failure of flexible pipe.
Because the marine oil and gas exploitation advances to deep water, the standpipe in deepwater environment can be considered the elongated flexible structure, and the small deformation theory is no longer applicable, and this makes the vortex-induced vibration problem of standpipe more outstanding.So far, be exactly the model measurement method to one of most important method of research of flexible pipe vortex-induced vibration phenomenon.The phenomenon of simulating in test adopts advanced proving installation can guarantee the reliability of test data more close to the truth of occurring in nature.Can design the vibration-repressing device of better inhibition vortex-induced vibration of marine riser by the method for model measurement.
Through the retrieval of prior art is found, present vortex-induced vibration test device generally carries out in towing oceanographic engineering swimmer's pool, and what have carries out in annular water tank, and what have drags standpipe with towboat and carry out the vortex-induced vibration test.paper " Laboratory Investigation of Long Riser VIVResponse " in the 14th International Coast and polar region engineering conference " Proceedings of the Fourteen (2004) International Offshore and PolarEngineering Conference " (experimental study of long riser vortex excited vibration response) is about flexible pipe vortex-induced vibration experimental study, mentioned a kind of flexible pipe vortex-induced vibration model measurement technology in literary composition, compliant riser is horizontally placed in towing basin, trailer drags riser model and produces uniform flow field.Measure the motion of standpipe with the acceleration transducer that is arranged in riser interiors, arrange the dependent variable in grating measuring standpipe wall in the standpipe wall.By analysis, the weak point of this measuring technology is: 1. generally can only simulate the vortex-induced vibration of small scale pipe fitting, the vortex-induced vibration that is difficult to effectively carry out under real Reynolds number is tested.2. pulled the restriction of oceanographic engineering swimmer's pool length, resulting test section distance is less, and the test data that records is less.3. generally can only simulate the vortex-induced vibration of uniform flow field neutral tube, can not analogue step the vortex-induced vibration of flow field neutral tube.
Summary of the invention
The present invention is directed to the prior art above shortcomings, provide a kind of uniform-flow and stepped uniform to flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, physical size standpipe, evenly or the ladder flow field can be simulated, and the vortex-induced vibration rotary test that the oceanographic engineering swimmer's pool carries out the compliant riser model can be placed in for a long time.
the present invention is achieved by the following technical solutions, the present invention includes: riser model mechanism, the measuring and analysis system console module, driver module, top cantilever module, the Cylindorical rod segmentation module, bottom cantilever arms module and bottom support module, wherein: riser model mechanism is fixedly installed between bottom cantilever arms module and top cantilever module, the Cylindorical rod segmentation module vertically be placed in the oceanographic engineering swimmer's pool and respectively with the bottom support module, driver module is connected with top cantilever module with the bottom cantilever arms module and is connected, on the bottom support module is fixedly installed at the bottom of the lifting of oceanographic engineering swimmer's pool, driver module is connected with top cantilever module with the Cylindorical rod segmentation module respectively and outputting power, the two ends, left and right of top cantilever module are connected with the Cylindorical rod segmentation module respectively, the measuring and analysis system console module respectively with riser model, top cantilever module and bottom cantilever arms module are connected and receive and detect data.
Described riser model mechanism comprises: riser model, universal joint, three component sensors, sliding axle, web joint, standpipe fixture splice, linear bearing, buffer spring and servo drive motor, wherein: the two ends of the first standpipe fixture splice are connected with the top of riser model and an end of the first universal joint respectively, and the other end of the first universal joint is fixedly installed on the standpipe holder.The two ends of the second standpipe fixture splice are connected with the bottom of riser model and an end of the second universal joint respectively, and the other end of the second universal joint is fixedly installed on three component sensors, and linear bearing is connected with sliding axle, and linear bearing is connected with buffer spring.
The mass ratio that the linear mass of described riser model and its unit length arrange water is 1: 1.
Described measuring and analysis system console module comprises: measuring unit, record a video unit, computing unit and wireless transmission unit under water, wherein: computing unit is arranged in the trailer machine room of oceanographic engineering swimmer's pool and is connected to transmit the wireless measurement signal of unit and measuring unit output of recording a video with wireless transmission unit under water, and computing unit carries out Storage and Processing to the wireless measurement signal that receives in real time.
Described driver module provides power for whole system and the velocity of rotation of device is accurately controlled, this driver module comprises: motor, gear drive, change speed gear box, driven wheel, driving shaft and adjustable support base, wherein: motor is connected with change speed gear box, change speed gear box is connected with driving shaft, driving shaft is connected with driven wheel, motor, change speed gear box, driven wheel, driving shaft all will be fixed in the adjustable support base, realize encapsulation.On the steelframe of adjustable support floor installation Yu Haiyang engineering swimmer's pool trailer.
The reduction gear ratio of described change speed gear box is 40: 1; The reduction gear ratio of described this gear drive is 7.
Described top cantilever module comprises: cantilever, oblique pull lock, diagonal brace and sleeve, wherein: cantilever top use oblique pull lock is connected with top cantilever Cylindorical rod, for cantilever provides prestress, jib foot uses diagonal brace to be connected with top cantilever Cylindorical rod, the end of cantilever will be connected with the stationary installation in riser model mechanism, data line enters Cylindorical rod and upwards is connected to the measuring and analysis system console module by top cantilever Cylindorical rod by end and the cantilever of test specimen, and jacket casing is connected to the right-hand member of riser model.
Described sleeve specifically is socketed on the upper extreme point of riser model and the outside on whole top, makes the riser model with the sleeve part not be subjected to the effect of current in the proving installation rotation, thereby realizes analogue step stream.When sleeve was removed fully, each section of whole riser model was subject to uniform flow's effect in the experimental provision rotation, can simulate uniform flow field again.The fixed position of sleeve and length can axially change along riser model as required, to simulate the stepped uniform stream in different flow fields.
Described cantilever adopts the prestressed rectangular steel truss structure; Truss adopts modular design, and whole truss sections processing uses rectangular slab to connect, and changes the length of truss with this, uses to adapt in different depth of water situations.
The length of described cantilever is 18m and 9m.
Described Cylindorical rod segmentation module is specially the some sections Cylindorical rod segmentation mechanisms that are fixedly linked by joint flange, two ends of each Cylindorical rod segmentation mechanism bolt hole that all has been circular layout, perpendicular at the bottom of the lifting of Cylindorical rod segmentation mechanism and oceanographic engineering swimmer's pool.
Described bottom support module comprises: bottom support ring flange, bottom solid bearing, bottom stationary shaft and bottom base, wherein: the top of Cylindorical rod is connected with Cylindorical rod segmentation module or bottom cantilever arms module, the bottom of Cylindorical rod is connected with the bottom stationary shaft, the bottom solid bearing is positioned at the outside of Cylindorical rod and is tightly connected, on bottom solid bearing and bottom base are fixedly installed at the bottom of the lifting of oceanographic engineering swimmer's pool successively.
Compared with prior art, advantage of the present invention comprises:
1. the present invention can realize standpipe vortex-induced vibration test of (without sleeve) under (sleeve is arranged) and uniform incoming flow effect under the effect of ladder incoming flow;
2. its whirligig can extend the test duration greatly, has increased the accuracy of experimental data;
3. the present invention can take full advantage of the real Reynolds number vortex-induced vibration of the Simulation of depth large-size pipe of oceanographic engineering swimmer's pool;
4. the present invention adopts modular design, and advantage is to be convenient to install, and is convenient to upgrading and change, and satisfies different functional requirements;
5. the present invention can simulate the flow field of ocean true environment more really, than test on towing oceanographic engineering swimmer's pool and towboat in the past, significant progress is arranged.
Description of drawings
Fig. 1 is structural representation of the present invention;
Wherein: (a) for containing sleeve, (b) for not containing sleeve.
Fig. 2 is the structure front elevation of driver module.
Fig. 3 is the driver module structural representation.
Fig. 4 is the structural representation of top cantilever module.
Fig. 5 is the schematic diagram of the first cantilever design in the cantilever module of top.
Fig. 6 is the structural representation of bottom support module.
Fig. 7 is the side view of bottom stiff end in riser model mechanism.
Fig. 8 is the upward view of bottom stiff end in riser model mechanism.
Fig. 9 is the structural representation of top stiff end in riser model mechanism.
Figure 10 is riser model mechanism structure schematic diagram.
Embodiment
The below elaborates to embodiments of the invention, and the present embodiment is implemented under take technical solution of the present invention as prerequisite, 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, the present embodiment comprises: riser model mechanism 1, measuring and analysis system console module 2, driver module 3, top cantilever module 4, Cylindorical rod segmentation module 5, bottom cantilever arms module 6, bottom support module 7, wherein: riser model mechanism 1 is fixedly installed between bottom cantilever arms module and top cantilever module, Cylindorical rod segmentation module 5 vertically be placed in the oceanographic engineering swimmer's pool and respectively with bottom support module 7, driver module 3 is connected with top cantilever module vertically and is connected, bottom support module 7 is fixedly installed at the bottom of the lifting of oceanographic engineering swimmer's pool on 8, driver module 3 is connected with top cantilever module 4 with Cylindorical rod segmentation module 5 respectively and outputting power, the two ends, left and right of top cantilever module 4 are connected with Cylindorical rod segmentation module 5 respectively, measuring and analysis system console module 2 respectively with riser model 31, top cantilever module 4 and bottom cantilever arms bottom support module 7 are connected and receive and detect data.
Described measuring and analysis system console module 2 comprises: measuring unit 10, record a video unit 11, computing unit 12 and wireless transmission unit 13 under water, wherein: computing unit is arranged in trailer 9 machine rooms of oceanographic engineering swimmer's pool and is connected to transmit the wireless measurement signal of unit and measuring unit output of recording a video with wireless transmission unit under water, and computing unit carries out Storage and Processing to the wireless measurement signal that receives in real time.
As shown in Figures 2 and 3, described driver module 3 comprises: change speed gear box 14, servo drive motor 15, transmission gear 16, driving shaft 17, adjustable support base 18 and driven wheel 19, wherein: servo drive motor 15 is connected with change speed gear box 14, change speed gear box 14 is connected with driving shaft 17, driving shaft 17 is connected with driven wheel 18, servo drive motor 15, change speed gear box 14, driven wheel 18, driving shaft 17, all will be fixed in the adjustable support base, realize encapsulation.On the steelframe of adjustable support floor installation Yu Haiyang engineering swimmer's pool trailer 9.
The reduction gear ratio of described change speed gear box is 40: 1.
The reduction gear ratio of described gear drive is 7.
As shown in Figure 4, described top cantilever module 4 comprises: oblique pull lock the 20, first cantilever 21, diagonal brace 22, top cantilever Cylindorical rod 23 and sleeve 42, wherein: the first cantilever 21 tops use oblique pull locks 20 are connected with top cantilever Cylindorical rod 23, for the first cantilever provides prestress, the first cantilever 21 bottoms use diagonal braces 22 are connected with top cantilever Cylindorical rod 23.The end of the first cantilever 21 will be connected with the top stationary installation in riser model mechanism 1.
As shown in Figure 5, the first cantilever 21 adopts the prestressed rectangular steel truss structure.Use web joint to connect between truss sections.The web member of truss and the size of chord member are respectively, web member: external diameter 0.05m, thickness 0.004m, chord member: external diameter 0.03m, thickness 0.004m.Described the first jib-length is 18m.
Described bottom cantilever arms module comprises: the second cantilever, truss.The second cantilever of bottom cantilever arms module and truss-frame structure and top cantilever module class are seemingly.Described the second jib-length is 9m.
Described sleeve 42 specifically is socketed on the upper extreme point of riser model and the outside on whole top, makes the riser model with the sleeve part not be subjected to the effect of current in the proving installation rotation, thereby realizes analogue step stream.When sleeve was removed fully, each section of whole riser model was subject to uniform flow's effect in the experimental provision rotation, can simulate uniform flow field again.
as shown in Figure 6, described bottom support module 7 comprises: Cylindorical rod mounting flange 24, Cylindorical rod 25, bottom support ring flange 26, bottom solid bearing 27, bottom stationary shaft 28 and bottom base 29, wherein: Cylindorical rod 25 tops are connected with Cylindorical rod segmentation module 5 or bottom cantilever arms module 6 by mounting flange 24, the bottom is connected with bottom stationary shaft 28 by bottom support ring flange 26, then integral body is inserted in the solid bearing 27 of bottom, bearing realizes that oil is close, bottom solid bearing 27 is welded on bottom base 29, bottom base 29 by 30 high strength screws with 8 be connected at the bottom of the lifting of oceanographic engineering swimmer's pool.
Described Cylindorical rod segmentation module 5 is specially the some sections Cylindorical rod segmentation mechanisms that are fixedly linked by joint flange, two ends of each Cylindorical rod segmentation mechanism bolt hole that all has been circular layout, at the bottom of the lifting of Cylindorical rod segmentation mechanism and oceanographic engineering swimmer's pool, 8 is perpendicular.
As Fig. 7, Fig. 8, Fig. 9 and shown in Figure 10, described riser model mechanism 1 comprises: web joint 30, buffer spring 31, linear bearing 32, sliding axle 33, three component sensors 34, universal joint 35, standpipe fixture splice 36, riser model 37, drive servomotor 38, track 39, slide block 40, standpipe holder 41.Universal joint 35, standpipe fixture splice 36 are respectively established one in riser model 37 bottoms and top.Wherein: the two ends of the first standpipe fixture splice 36 are connected with the top of riser model 37 and an end of the first universal joint 35 respectively, and the other end of the first universal joint 35 is fixedly installed on the standpipe holder.The two ends of the second standpipe fixture splice 36 are connected with the bottom of riser model 37 and an end of the second universal joint 35 respectively, the other end of the second universal joint 35 is fixedly installed on three component sensors 34, and linear bearing 32 buffer spring 31 that is connected with sliding axle 33 is connected with linear bearing 32.
The mass ratio that the linear mass of described riser model and its unit length arrange water is 1: 1.
This device is tested in the following manner: first select suitable model scale ratio and test operating mode according to the size of oceanographic engineering swimmer's pool, the physical size of pipe fitting, the concrete condition of test operating mode and the economy of test.Get that strength control requires and concrete size and the material of modules are determined in the vibration control requirement according to whole proving installation.It is as follows that each module is ready to rear concrete installation process.
In ground assembling bottom support module 7, after assembling is completed at the bottom of the lifting of rising oceanographic engineering swimmer's pool 8, the base 30 of bottom support module 7 is fixed by bolts at the bottom of lifting on 8.Then suitably reduce at the bottom of lifting 8 bottom cantilever arms modules 6 are installed, then an end of riser model mechanism 1 namely being tested pipe fitting is fixed on bottom cantilever arms module 6 with universal shaft coupling device, the other end rides on pool wall, and data line passes crossbeam from coupling arrangement and enters Cylindorical rod, reduces at the bottom of lifting 8.Determine the length of Cylindorical rod segmentation module 5 according to the length requirement of test pipe fitting, then Cylindorical rod segmentation module 5 use dollies are winched to oceanographic engineering swimmer's pool central authorities and lift.Get simultaneously in the above-mentioned module of installation, in ground assembling measuring and analysis system console module 2, driver module 3, top cantilever module 4.Lifting top cantilever module 4 after 5 installations of Cylindorical rod segmentation module, the connection between each module adopts flange to connect, and data line passes crossbeam from coupling arrangement and enters Cylindorical rod.After top cantilever module 4 lifting is completed, the other end of riser model mechanism 1 test pipe fitting is passed sleeve be fixed on the link block of top cantilever module 4.After installation, winch to directly over top cantilever module 43 with dolly, top cantilever module 4 is controlled with paying special attention to precision being connected of driver module 3, after connection, driver module 3 is fixed by bolts on dolly.Install and measure at last analytic system console module 2, the data line in Cylindorical rod is connected on measuring and analysis system console module 2.
Install computer real-time analysis software and image processing software on computing machine in measuring and analysis system console module 2, then will derive the data line that comes from test pipe fitting two ends and be connected on computer.Simultaneously the surveying instrument in proving installation being derived the power lead that comes connects with the mains.
The post debugging device is completed in integral installation.After completing, debugging just can test according to concrete operating mode and test specification startup proving installation.
Claims (9)
1. a uniform-flow and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, comprise: riser model mechanism, the measuring and analysis system console module, driver module, bottom cantilever arms module and top cantilever module, Cylindorical rod segmentation module and bottom support module, wherein: riser model mechanism is fixedly installed between bottom cantilever arms module and top cantilever module, the Cylindorical rod segmentation module vertically be placed in the oceanographic engineering swimmer's pool and respectively with the bottom support module, driver module is connected with top cantilever module and is connected, on the bottom support module is fixedly installed at the bottom of the lifting of oceanographic engineering swimmer's pool, driver module is connected with top cantilever module with the Cylindorical rod segmentation module respectively and outputting power, the two ends, left and right of top cantilever module are connected with the Cylindorical rod segmentation module respectively, the measuring and analysis system console module respectively with riser model, top cantilever module and bottom cantilever arms module are connected and receive and detect data,
described riser model mechanism comprises: riser model, universal joint, three component sensors, sliding axle, web joint, the standpipe fixture splice, linear bearing, buffer spring and servo drive motor, wherein: the two ends of the first standpipe fixture splice are connected with the top of riser model and an end of the first universal joint respectively, the other end of the first universal joint is fixedly installed on the standpipe holder, the two ends of the second standpipe fixture splice are connected with the bottom of riser model and an end of the second universal joint respectively, the other end of the second universal joint is fixedly installed on three component sensors, linear bearing is connected with sliding axle, linear bearing is connected with buffer spring, linear bearing is arranged on web joint, servo drive motor is connected with track.
2. uniform-flow according to claim 1 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, the mass ratio that the linear mass of described riser model and its unit length arrange water is 1:1.
3. uniform-flow according to claim 1 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, described measuring and analysis system console module comprises: measuring unit, record a video unit, computing unit and wireless transmission unit under water, wherein: computing unit is arranged in the trailer machine room of oceanographic engineering swimmer's pool and is connected to transmit the wireless measurement signal of unit and measuring unit output of recording a video with wireless transmission unit under water, and computing unit carries out Storage and Processing to the wireless measurement signal that receives in real time.
4. uniform-flow according to claim 1 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, described driver module provides power for whole device and the velocity of rotation of device is accurately controlled, this driver module comprises: motor, gear drive, change speed gear box, driven wheel, driving shaft and adjustable support base, wherein: motor is connected with change speed gear box, change speed gear box is connected with driving shaft, driving shaft is connected with driven wheel, motor, change speed gear box, driven wheel, driving shaft, all will be fixed in the adjustable support base and realize encapsulation, on the steelframe of adjustable support floor installation Yu Haiyang engineering swimmer's pool trailer.
5. uniform-flow according to claim 4 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, the reduction gear ratio of described change speed gear box is 40:1.
6. uniform-flow according to claim 1 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, described top cantilever module comprises: cantilever, oblique pull lock and sleeve, wherein: six roots of sensation oblique pull lock one end is connected with the Cylindorical rod segmentation module, the other end is connected to provide prestress with cantilever, jacket casing is connected to the upper extreme point of riser model and the outside on whole top.
7. uniform-flow according to claim 6 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, described cantilever adopts the prestressed rectangular steel truss structure, and its length is 18m.
8. uniform-flow according to claim 1 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, described Cylindorical rod segmentation module is specially the some sections Cylindorical rod segmentation mechanisms that are fixedly linked by joint flange, two ends of each Cylindorical rod segmentation mechanism bolt hole that all has been circular layout, perpendicular at the bottom of the lifting of Cylindorical rod segmentation mechanism and oceanographic engineering swimmer's pool.
9. uniform-flow according to claim 1 and stepped uniform flow down the perpendicular rotary testing device for vortex-induced vibration of putting standpipe, it is characterized in that, described bottom support module comprises: Cylindorical rod, the bottom support ring flange, the bottom solid bearing, bottom stationary shaft and bottom base, wherein: the top of Cylindorical rod is connected with Cylindorical rod segmentation module or bottom cantilever arms module, the bottom of Cylindorical rod is connected with the bottom stationary shaft, the bottom solid bearing is positioned at the outside of Cylindorical rod and is tightly connected, on bottom solid bearing and bottom base are fixedly installed at the bottom of the lifting of oceanographic engineering swimmer's pool successively.
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| CN102279085A (en) * | 2011-05-31 | 2011-12-14 | 上海交通大学 | Simulation test device for vortex-induced vibration of deep-sea vertical pipe array model under conditions of uniform defluxion and pretension |
| CN102305697B (en) * | 2011-08-02 | 2013-04-17 | 上海交通大学 | Vortex-induced vibration test device for movable deep sea vertical pipe array model at lower top end of uniform flow |
| 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 |
| CN102288376B (en) * | 2011-08-02 | 2013-02-06 | 上海交通大学 | Top-movable vortex-induced vibration rotating device for vertically-arranged vertical pipe under uniform flow and step flow |
| 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 |
| CN102313637B (en) * | 2011-08-12 | 2013-05-22 | 上海交通大学 | Bidirectional forced vibration experimental apparatus for FISHFARM buoy segment model under action of inclined uniform flow |
| CN105319043A (en) * | 2015-06-18 | 2016-02-10 | 浙江海洋学院 | Vertically-arranged flexible pipe eddy torrent vibration experiment device |
| CN105203282B (en) * | 2015-09-18 | 2017-12-05 | 天津大学 | Local velocity increases inclination angle cascade flow marine riser beam vortex vibration testing device |
| CN105203283B (en) * | 2015-09-18 | 2017-11-28 | 天津大学 | Variable vortex vibration testing device is arranged in local velocity increase vertical tube space |
| CN108507758A (en) * | 2018-05-04 | 2018-09-07 | 山东省科学院海洋仪器仪表研究所 | A kind of marine riser cylinder flow-disturbing experimental provision |
| CN112444370B (en) * | 2020-11-18 | 2022-07-15 | 哈尔滨工程大学 | Simple flow-induced vibration noise test device based on passive vibration isolation principle |
| 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 |
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