CN104458172A - Testing device for measuring power responses of thin and long vertical pipe under uniform flow - Google Patents
Testing device for measuring power responses of thin and long vertical pipe under uniform flow Download PDFInfo
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- CN104458172A CN104458172A CN201410692147.1A CN201410692147A CN104458172A CN 104458172 A CN104458172 A CN 104458172A CN 201410692147 A CN201410692147 A CN 201410692147A CN 104458172 A CN104458172 A CN 104458172A
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Abstract
The invention discloses a testing device for measuring power responses of a thin and long vertical pipe under uniform flow. By means of the testing device, vortex-induced vibration testing of the vertical pipe under the uniform incoming flow effect can be achieved; the safety coefficient of large key installation can be improved sufficiently through a lifting bottom of an oceanographic engineering deep pool; true Reynolds number vortex-induced vibration of the large pipe can be simulated sufficiently through the depth of the oceanographic engineering deep pool; real-time monitoring devices can be arranged on the periphery of the large pipe sufficiently through the width of the oceanographic engineering deep pool, and the shape of a model can be adjusted according to different requirements. According to the testing device, the modulation design is adopted, and the testing device has the advantages that convenience is brought to installation, updating and modifying, and different functional requirements are met; the testing device can simulate movement of the vertical pipe under the uniform flow effect, and truer vortex-induced vibration testing can be carried out.
Description
Technical field
The invention belongs to oceanographic engineering field, relate to a kind of uniform flow particularly and measure elongated standpipe dynamic response, monitor the experimental provision of vortex-induced vibration (VIV) simultaneously.
Background technology
Under the effect of stormy waves stream, drive catenary riser is made periodic reverse motion by marine floating type works in water, thus Relative Oscillation incoming flow is produced in standpipe direction of motion, this vibration incoming flow will encourage standpipe pendency section that the vortex-induced vibration of " intermittence " occurs.In recent years, along with the exploitation of deep-sea oil system, engineering starts adopt catenary riser in a large number.Standpipe in deepwater environment can be considered elongated flexible structure, now small deformation theory is no longer applicable, this makes the vortex-induced vibration problem of standpipe more outstanding, and the analysis therefore for the overall vortex-induced vibration response characteristic under the effect of slender flexible standpipe top platform is that can it be applied to the key point of engineering practice.
Forecast that the vortex-induced vibration of slender marine structures endangered the most frequently used method is numerical evaluation SHEAR7, VIVA, VIVANA in the past, thisly predicts that the method for load and response still has very large uncertainty so far by theoretical formula.So far, be exactly model test method to one of most important method of research of flexible pipe vortex-induced vibration phenomenon.The phenomenon observed in model test is closer to natural truth.By the retrieval to prior art, riser model test is generally carried out in towing oceanographic engineering swimmer's pool, and what have carries out in annular water tank, and what have drags with towboat the test that standpipe carries out vortex-induced vibration.Be published in the paper " Experiments with asteel catenary riser model in a towing tank " (the slender flexible standpipe model experiment in towing basin) in " Applied Ocean Research (2013) " 43 periodical, the steady flow condition around standpipe is simulated in the compartment be connected with standpipe by operation in towing basin, and standpipe is installed the state of miniature acceleration measuring instrument monitoring standpipe.Analyze this kind of measuring technology, find its not foot point be: the degree of depth 1, considering towing basin, generally can only simulate the vortex-induced vibration of small scale pipe fitting, be difficult to effectively to carry out the vortex-induced vibration test under real Reynolds number; 2, being not easy to arrange the watch-dog under water around standpipe, the shape of standpipe can not be regulated when carrying out the test of sloping wave type riser model; 3, the forced oscillation experiment under certain flow rate can not be carried out; 4, standpipe process is installed in an experiment more complicated; 5, the motion of ocean platform can not effectively be simulated.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of uniform flow and measures elongated standpipe dynamic response proving installation, is intended to analyze the overall vortex-induced vibration response characteristic of slender flexible standpipe under equal uniform flow effect.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of uniform flow to measure elongated standpipe dynamic response proving installation, comprise deep sea vertical pipe module, top boundary module, bottom boundary module, stuck-module, top slide module, basal sliding module, Measurement and analysis control module, described top boundary module is connected with deep sea vertical pipe module by screw, described top boundary module is fixed on stuck-module, in described bottom boundary module, screw I is connected with described deep sea vertical pipe module, one end in described stuck-module is arranged in top slide module, the bottom of described basal sliding module is connected in bottom boundary module, described Measurement and analysis control module is positioned on trailer, described deep sea vertical pipe module comprises deep sea vertical pipe model, Fibre Optical Sensor, described Fibre Optical Sensor is arranged on described deep sea vertical pipe model, the top of described deep sea vertical pipe model is connected with top boundary module, the bottom of described deep sea vertical pipe model is connected with bottom boundary module, described top boundary module comprises top clamp outer rim, screw, top clamp base plate, first backing plate, first universal joint fixed head, first universal joint wheelwork, second universal joint fixed head, one or three component instrument fixed head, one or three component instrument, first adjustment assembly, first voussoir, described top clamp outer rim is connected with deep sea vertical pipe model by screw, both are in same plane, described top clamp base plate and described top clamp outer rim affixed, described top clamp base plate is connected with described first backing plate with by screw, described first universal joint fixed head is connected with the first universal joint wheelwork with the first backing plate, described first universal joint wheelwork and the first universal joint fixed head and the second universal joint fixed head affixed, described second universal joint fixed head is connected with three component instrument fixed head sides, the opposite side of described three component instrument fixed heads is connected with three component instrument, the end and first of described three component instrument adjusts assembly and is connected, the opposite side of described first adjustment assembly is fixed on the first voussoir, described bottom boundary module comprises bottom jig outer rim, screw I, bottom jig base plate, second backing plate, 3rd universal joint fixed head, second universal joint wheelwork, 4th universal joint fixed head, two or three component instrument fixed head, two or three component instrument and bottom fixed board, described bottom jig outer rim is connected with described deep sea vertical pipe model by screw I, both are in same plane, described bottom jig base plate and described bottom jig outer rim affixed, described bottom jig base plate and the second backing plate affixed, described 3rd universal joint fixed head is connected with the second universal joint wheelwork with the second backing plate, described second universal joint wheelwork and the 3rd universal joint fixed head and the 4th universal joint fixed head affixed, described 4th universal joint fixed head is connected with the two or three component instrument fixed head side, the opposite side of described three component instrument fixed heads is connected with three component instrument, the end of described three component instrument is connected with bottom fixed board, described stuck-module comprises radome fairing, vertical fixing plate and vertical fixed block, described top slide module comprises the first Power Component, first flange apparatus, first slide block, first guide chain, first sliding rail and the first bracing frame, described vertical fixing plate is arranged on the first slide block, described vertical fixing plate is slidably fitted with vertical fixed block, both sides are separately installed with radome fairing, described vertical fixed block and the first voussoir Joint, described first Power Component is connected with the first sliding rail by the first flange apparatus, the turning axle of described first Power Component is connected on the first slide block by the first guide chain, described first skid is supported on the first sliding rail, and be connected with vertical fixing plate, described first bracing frame is fixed in Measurement and analysis control module, make it can interlock, described basal sliding module comprises little false bottom panel, plate mended by panel, panel contiguous block, second Power Component, second flange apparatus, second slide block, second guide chain, second sliding rail and the second bracing frame, the bottom of described little false bottom panel is connected on bottom fixed board, described panel contiguous block is welded on immediately below little false bottom panel, and mend plate with two pieces of panels and be connected, described panel is mended plate and is welded on the second slide block, described second Power Component is connected with the second sliding rail by the second flange apparatus, the turning axle of described second Power Component is connected on the second slide block by the second guide chain, described second skid is supported on the second sliding rail.
As preferably, described bottom fixed board is welded on described little false bottom panel
As preferably, the side of described first voussoir is fixed on described vertical fixed block.
As preferably, described Measurement and analysis control module comprises data collection processor motion controller and display, three component instrument in the input end of described data collection processor and described top boundary module and the single component instrument in bottom boundary module, and Fibre Optical Sensor is connected, its output terminal is connected with display; Motion controller comprises motion control output window and image display port, the first Power Component of motion control output window and described top slide module, and the second Power Component of basal sliding module is connected, and image display port is connected with display.
The beneficial effect of technique scheme of the present invention is as follows:
1, the present invention can realize the vortex-induced vibration test of standpipe under uniform incoming flow effect;
2, the present invention can make full use of the safety coefficient increasing large-scale key installation at the bottom of the lifting of oceanographic engineering swimmer's pool;
3, the present invention can make full use 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 can make full use of the width of oceanographic engineering swimmer's pool at large-size pipe periphery real-time monitoring equipment, needs to adjust the shape of model according to difference;
5, the present invention adopts modular design, and advantage is to be convenient to install, and is convenient to upgrading and change, and meets different functional requirements;
6, the present invention can simulate the motion of standpipe under equal uniform flow effect, carries out the test of more real vortex-induced vibration.
Accompanying drawing explanation
Fig. 1 is the structural representation of experimental provision provided by the invention.
Fig. 2 is the top junction composition of experimental provision provided by the invention.
Fig. 3 is the chart at the bottom of of experimental provision provided by the invention.
Fig. 4 is the structural representation of deep sea vertical pipe module provided by the invention.
Fig. 5 is the structural representation of top boundary module provided by the invention.
Fig. 6 is the structural representation of bottom boundary module provided by the invention.
Fig. 7 is the side view of stuck-module provided by the invention.
Fig. 8 is the structural representation of top slide module provided by the invention.
Fig. 9 is the side view of top slide module provided by the invention.
Figure 10 is the structural representation of basal sliding module provided by the invention.
Figure 11 is the partial schematic diagram of basal sliding module provided by the invention.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in figs. 1-11, embodiments provide a kind of uniform flow and measure elongated standpipe dynamic response proving installation, comprise deep sea vertical pipe module 1, top boundary module 2, bottom boundary module 3, stuck-module 4, top slide module 5, basal sliding module 6, Measurement and analysis control module 7, described top boundary module 2 is connected with deep sea vertical pipe module 1 by screw 11, described top boundary module 2 is fixed on stuck-module 4, in described bottom boundary module 3, screw I 22 is connected with described deep sea vertical pipe module 1, one end in described stuck-module 4 is arranged in top slide module 5, the bottom of described basal sliding module 6 is connected in bottom boundary module 3, described Measurement and analysis control module 7 is positioned on trailer, described deep sea vertical pipe module 1 comprises deep sea vertical pipe model 9, Fibre Optical Sensor 8, described Fibre Optical Sensor 8 is arranged on described deep sea vertical pipe model 9, the top of described deep sea vertical pipe model 9 is connected with top boundary module 2, the bottom of described deep sea vertical pipe model 9 is connected with bottom boundary module 3, described top boundary module 2 comprises top clamp outer rim 10, screw 11, top clamp base plate 12, first backing plate 13, first universal joint fixed head 14, first universal joint wheelwork 15, second universal joint fixed head 16, one or three component instrument fixed head 17, one or three component instrument 18, first adjustment assembly 19, first voussoir 20, described top clamp outer rim 10 is connected with deep sea vertical pipe model 9 by screw 11, both are in same plane, described top clamp base plate 12 is affixed with described top clamp outer rim 11, described top clamp base plate 12 is connected with described first backing plate 13 with by screw 11, described first universal joint fixed head 14 is connected with the first universal joint wheelwork 15 with the first backing plate 13, described first universal joint wheelwork 15 and the first universal joint fixed head 14 and the second universal joint fixed head 16 affixed, described second universal joint fixed head 16 is connected with three component instrument fixed head 17 sides, the opposite side of described three component instrument fixed heads 17 is connected with three component instrument 18, the end and first of described three component instrument 18 adjusts assembly 19 and is connected, the opposite side of described first adjustment assembly 19 is fixed on the first voussoir 20, described bottom boundary module 3 comprises bottom jig outer rim 21, screw I 22, bottom jig base plate 23, second backing plate 24, 3rd universal joint fixed head 25, second universal joint wheelwork 26, 4th universal joint fixed head 27, two or three component instrument fixed head 28, two or three component instrument 29 and bottom fixed board 30, described bottom jig outer rim 21 is connected with described deep sea vertical pipe model 9 by screw I 22, both are in same plane, described bottom jig base plate 23 is affixed with described bottom jig outer rim 21, described bottom jig base plate 23 and the second backing plate 24 affixed, described 3rd universal joint fixed head 25 is connected with the second universal joint wheelwork 26 with the second backing plate 24, described second universal joint wheelwork 26 and the 3rd universal joint fixed head 25 and the 4th universal joint fixed head 27 affixed, described 4th universal joint fixed head 27 is connected with the two or three component instrument fixed head 28 side, the opposite side of described three component instrument fixed heads 28 is connected with three component instrument 29, the end of described three component instrument 29 is connected with bottom fixed board 30, described stuck-module 4 comprises radome fairing 31, vertical fixing plate 32 and vertical fixed block 33, described top slide module 5 comprises the first Power Component 34, first flange apparatus 35, first slide block 36, first guide chain 37, first sliding rail 38 and the first bracing frame 39, described vertical fixing plate 32 is arranged on the first slide block 36, described vertical fixing plate 32 is slidably fitted with vertical fixed block 33, both sides are separately installed with radome fairing 31, described vertical fixed block 33 and the first voussoir 20 Joint, described first Power Component 34 is connected with the first sliding rail 38 by the first flange apparatus 35, the turning axle of described first Power Component 34 is connected on the first slide block 36 by the first guide chain 37, described first slide block 36 is slidably supported on the first sliding rail 38, and be connected with vertical fixing plate 32, described first bracing frame 39 is fixed in Measurement and analysis control module 7, make it can interlock, described basal sliding module 6 comprises little false bottom panel 40, plate 41 mended by panel, panel contiguous block 42, second Power Component 43, second flange apparatus 44, second slide block 45, second guide chain 46, second sliding rail 47 and the second bracing frame 48, the bottom of described little false bottom panel 40 is connected on bottom fixed board 30, described panel contiguous block 42 is welded on immediately below little false bottom panel 40, and mend plate 41 with two pieces of panels and be connected, described panel is mended plate 41 and is welded on the second slide block 45, described second Power Component 43 is connected with the second sliding rail 47 by the second flange apparatus 44, the turning axle of described second Power Component 43 is connected on the second slide block 45 by the second guide chain 46, described second slide block 45 is slidably supported on the second sliding rail 47, second bracing frame is supported at the false end, pond.
Described bottom fixed board 30 is welded on described little false bottom panel 40
The side of described first voussoir 20 is fixed on described vertical fixed block 33.
Described Measurement and analysis control module 7 comprises data collection processor motion controller and display, three component instrument in the input end of described data collection processor and described top boundary module and the single component instrument in bottom boundary module, and Fibre Optical Sensor is connected, its output terminal is connected with display; Motion controller comprises motion control output window and image display port, the first Power Component of motion control output window and described top slide module, and the second Power Component of basal sliding module is connected, and image display port is connected with display.
This concrete principle of work implemented: during test, Fibre Optical Sensor four-way is evenly arranged in deep sea vertical pipe module, and heat-shrink tube (can buoyant mass be added if desired) on overlapping on standpipe, the two ends of standpipe are connected in top boundary module and bottom boundary module, they respectively with stuck-module, top slide module is connected with basal sliding module, during test, rely on the false lifting at the end and the movement of trailer, riser model is made to arrive the position of specifying, present the form of specifying, by the conputer controlled motor in Measurement and analysis module, standpipe is moved with uniform velocity in the horizontal direction, the motion of standpipe is by high-speed camera record, strain is by fiber sensor measuring, and data are passed to computer and carry out aftertreatment.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a uniform flow measures elongated standpipe dynamic response proving installation, it is characterized in that, comprise deep sea vertical pipe module, top boundary module, bottom boundary module, stuck-module, top slide module, basal sliding module, Measurement and analysis control module, described top boundary module is connected with deep sea vertical pipe module by screw, described top boundary module is fixed on stuck-module, in described bottom boundary module, screw I is connected with described deep sea vertical pipe module, one end in described stuck-module is arranged in top slide module, the bottom of described basal sliding module is connected in bottom boundary module, described Measurement and analysis control module is positioned on trailer, described deep sea vertical pipe module comprises deep sea vertical pipe model, Fibre Optical Sensor, described Fibre Optical Sensor is arranged on described deep sea vertical pipe model, the top of described deep sea vertical pipe model is connected with top boundary module, the bottom of described deep sea vertical pipe model is connected with bottom boundary module, described top boundary module comprises top clamp outer rim, screw, top clamp base plate, first backing plate, first universal joint fixed head, first universal joint wheelwork, second universal joint fixed head, one or three component instrument fixed head, one or three component instrument, first adjustment assembly, first voussoir, described top clamp outer rim is connected with deep sea vertical pipe model by screw, both are in same plane, described top clamp base plate and described top clamp outer rim affixed, described top clamp base plate is connected with described first backing plate with by screw, described first universal joint fixed head is connected with the first universal joint wheelwork with the first backing plate, described first universal joint wheelwork and the first universal joint fixed head and the second universal joint fixed head affixed, described second universal joint fixed head is connected with three component instrument fixed head sides, the opposite side of described three component instrument fixed heads is connected with three component instrument, the end and first of described three component instrument adjusts assembly and is connected, the opposite side of described first adjustment assembly is fixed on the first voussoir, described bottom boundary module comprises bottom jig outer rim, screw I, bottom jig base plate, second backing plate, 3rd universal joint fixed head, second universal joint wheelwork, 4th universal joint fixed head, two or three component instrument fixed head, two or three component instrument and bottom fixed board, described bottom jig outer rim is connected with described deep sea vertical pipe model by screw I, both are in same plane, described bottom jig base plate and described bottom jig outer rim affixed, described bottom jig base plate and the second backing plate affixed, described 3rd universal joint fixed head is connected with the second universal joint wheelwork with the second backing plate, described second universal joint wheelwork and the 3rd universal joint fixed head and the 4th universal joint fixed head affixed, described 4th universal joint fixed head is connected with the two or three component instrument fixed head side, the opposite side of described three component instrument fixed heads is connected with three component instrument, the end of described three component instrument is connected with bottom fixed board, described stuck-module comprises radome fairing, vertical fixing plate and vertical fixed block, described top slide module comprises the first Power Component, first flange apparatus, first slide block, first guide chain, first sliding rail and the first bracing frame, described vertical fixing plate is arranged on the first slide block, described vertical fixing plate is slidably fitted with vertical fixed block, both sides are separately installed with radome fairing, described vertical fixed block and the first voussoir Joint, described first Power Component is connected with the first sliding rail by the first flange apparatus, the turning axle of described first Power Component is connected on the first slide block by the first guide chain, described first skid is supported on the first sliding rail, and be connected with vertical fixing plate, described first bracing frame is fixed in Measurement and analysis control module, make it can interlock, described basal sliding module comprises little false bottom panel, plate mended by panel, panel contiguous block, second Power Component, second flange apparatus, second slide block, second guide chain, second sliding rail and the second bracing frame, the bottom of described little false bottom panel is connected on bottom fixed board, described panel contiguous block is welded on immediately below little false bottom panel, and mend plate with two pieces of panels and be connected, described panel is mended plate and is welded on the second slide block, described second Power Component is connected with the second sliding rail by the second flange apparatus, the turning axle of described second Power Component is connected on the second slide block by the second guide chain, described second skid is supported on the second sliding rail.
2. a kind of uniform flow according to claim 1 measures elongated standpipe dynamic response proving installation, it is characterized in that, described bottom fixed board is welded on described little false bottom panel.
3. a kind of uniform flow according to claim 1 measures elongated standpipe dynamic response proving installation, it is characterized in that, the side of described first voussoir is fixed on described vertical fixed block.
4. a kind of uniform flow according to claim 1 measures elongated standpipe dynamic response proving installation, it is characterized in that, described Measurement and analysis control module comprises data collection processor motion controller and display, three component instrument in the input end of described data collection processor and described top boundary module and the single component instrument in bottom boundary module, and Fibre Optical Sensor is connected, its output terminal is connected with display; Motion controller comprises motion control output window and image display port, the first Power Component of motion control output window and described top slide module, and the second Power Component of basal sliding module is connected, and image display port is connected with display.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107478408A (en) * | 2017-08-16 | 2017-12-15 | 中国海洋石油总公司 | One kind simulation uniform flow effect lower standing tube array dynamic response experimental provision |
| CN107560811A (en) * | 2017-08-16 | 2018-01-09 | 中国海洋石油总公司 | A kind of double standpipe vortex-induced vibration research experiment vertical tube fixing devices |
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