CN104458174B - Uniform flow measures elongated standpipe dynamic response device outside a kind of face - Google Patents

Abstract

Elongated standpipe dynamic response device is measured the invention discloses uniform flow outside a kind of face, the present invention can realize vortex-induced vibration test of the standpipe under 90 degree of uniform incoming flow effects；The lifting bottom of ocean engineering swimmer's pool can be made full use of increases the large-scale crucial safety coefficient installed；The real Reynolds number vortex-induced vibration of the Simulation of depth large-size pipe of ocean engineering swimmer's pool can be made full use of；The width of ocean engineering swimmer's pool can be made full use of to arrange real-time monitoring equipment on large-size pipe periphery, need to be adjusted the shape of model according to different；Using modularized design, advantage is to be easily installed, and is easy to upgrading and change, and meet different functional requirements.

Description

A dynamic response device for measuring slender standpipe with uniform out-of-plane flow

technical field

The invention belongs to the field of marine engineering, and in particular relates to an experimental device for measuring the dynamic response of a slender standpipe under an out-of-plane uniform flow and simultaneously monitoring vortex-induced vibration (VIV).

Background technique

Under the action of wind, wave and current, the marine floating structure will drive the catenary riser to make periodic reciprocating motions in the water, thereby generating a relative oscillating flow in the direction of riser movement, and this oscillating flow will encourage the standpipe to hang "Intermittent" vortex-induced vibration occurs in the section. In recent years, with the development of deep-sea petroleum systems, catenary risers have been widely used in engineering. The riser in the deep water environment can be regarded as a slender and flexible structure. At this time, the theory of small deformation is no longer applicable, which makes the problem of vortex-induced vibration of the riser more prominent. The analysis of vibration response characteristics is the key to whether it can be applied to engineering practice.

In the past, the most commonly used methods for predicting vortex-induced vibration hazards of slender marine structures were numerical calculations of SHEAR7, VIVA, and VIVANA. This method of predicting loads and responses through theoretical formulas still has great uncertainty. So far, one of the most important methods for studying the vortex-induced vibration phenomenon of flexible pipes is the model test method. The phenomenon observed in the model test is closer to the real situation in nature. Through the search of the prior art, the riser model test is generally carried out in the deep water tank of the towed marine engineering, some are carried out in the annular tank, and some are tested by the tugboat to drag the riser for vortex induced vibration. The paper "Experiments with aste l catenary riser model in a towing tank" published in the 43rd issue of "Applied Ocean Research (2013)" (experiment of the slender flexible riser model in the towing tank), in the towing tank by running and The compartment connected with the riser is used to simulate the stable flow field around the riser, and a micro-accelerometer is installed on the riser to monitor the state of the riser. Analyzing this test technology, it is found that its disadvantages are: 1. Considering the depth of the towing pool, it is generally only possible to simulate the vortex-induced vibration of small-scale pipe fittings, and it is difficult to effectively test the vortex-induced vibration at the real Reynolds number. 2. It is not easy The underwater monitoring equipment around the standpipe is arranged, and the shape of the standpipe cannot be adjusted during the slow-wave riser model test. 3. The forced oscillation experiment at a certain flow rate cannot be carried out. 4. The process of installing the standpipe in the experiment is more complicated. 5. It cannot effectively simulate the motion of the ocean platform.

Contents of the invention

The technical problem to be solved by the present invention is to provide a test device for measuring the dynamic response of a slender riser under uniform out-of-plane flow. characteristic.

In order to solve the above technical problems, an embodiment of the present invention provides a dynamic response test device for measuring slender risers with uniform flow down, including a deep-sea riser module, a top boundary module, a bottom boundary module, a fixed module, a top sliding module, and a bottom sliding module and a measurement analysis control module, the two ends of the deep-sea riser module are respectively connected with the top boundary module and the bottom boundary module, the fixed module is connected with the top boundary module and the top sliding module, and the deep-sea riser module is connected with the fixed module, the top sliding module and the bottom sliding module form an included angle of 90 degrees, the top sliding module is also connected to the fixed end of the bottom of the trailer, and the plane where the top sliding module is located is parallel to the direction of movement of the trailer, and the measurement analysis control module is respectively connected to the deep sea The riser module, the top boundary module, the bottom boundary module, the fixed module, the top sliding module, and the bottom sliding module are connected, the bottom sliding module is connected with the bottom boundary module, and the deep sea riser module includes a deep sea riser model and an optical fiber sensor, the optical fiber sensor is arranged on the deep-sea riser model, the top of the deep-sea riser model is connected with the top boundary module, the bottom of the deep-sea riser model is connected with the bottom boundary module, and the The plane where the riser model is located and the plane where the bottom fixed rail is located form an angle of 90°, and the top boundary module includes the outer edge of the top clamp, screws, the bottom plate of the top clamp, the first backing plate, the first universal joint fixing plate, the first Universal joint turning device, second universal joint fixing plate, first three-component force fixing plate, first three-component force measuring device, first adjustment assembly, first wedge, the outer edge of the top clamp through screws and deep sea The riser models are connected, and the planes where the two are located form an angle of 90 degrees. The bottom plate of the top fixture is fixedly connected to the outer edge of the top fixture, and the bottom plate of the top fixture is connected to the first backing plate through screws. The first universal joint fixing plate is connected with the first backing plate and the first universal joint rotating device, and the first universal joint rotating device is fixedly connected with the first universal joint fixing plate and the second universal joint fixing plate , the second universal joint fixed plate is connected to one side of the three-component force instrument fixed plate, the other side of the three-component force instrument fixed plate is connected to the three-component force instrument, and the end of the three-component force instrument is connected to the third force instrument An adjustment component is connected, and the other side of the first adjustment component is fixed on the first wedge, and the bottom boundary module includes the outer edge of the bottom clamp, screw I, the bottom plate of the bottom clamp, the second backing plate, the second Three universal joint fixing plates, the second universal joint rotating device, the fourth universal joint fixing plate, the second three-component force meter fixing plate, the second three-component force meter and the bottom fixing plate, the outer edge of the bottom clamp is passed The screw I is connected with the deep-sea riser model, and the two planes form an angle of 90 degrees, the bottom clamp bottom plate is fixedly connected to the outer edge of the bottom clamp, and the bottom clamp bottom plate is fixedly connected to the second backing plate, The third universal joint fixing plate is connected with the second backing plate and the second universal joint rotating device, and the second universal joint rotating device is connected with the third universal joint fixing plate and the fourth universal joint fixing plate fixed connection, the fourth universal joint fixed plate is connected to one side of the second three-component force instrument fixed plate, the other side of the three-component force instrument fixed plate is connected to the three-component force instrument, and the three-component force instrument is connected to the other side of the three-component force instrument. The end of the dynamometer is connected to the bottom fixing plate, the fixing module includes a fairing, a vertical fixing plate and a vertical fixing block, the top sliding module includes a first power assembly, a first flange device, a first slider, The first guide chain, the first sliding track and the first support frame, the vertical fixing plate is installed on the first slider, the vertical fixing block is slidably installed on the vertical fixing plate, and fairings are respectively installed on both sides, The vertical fixed block is fixedly connected to the first wedge, the first power assembly is connected to the first sliding track through the first flange device, and the rotation shaft of the first power assembly is connected to the On the first sliding block, the first sliding block is slidably supported on the first sliding track, and is connected with the vertical fixing plate, and the bottom sliding module includes a small false bottom panel, a panel patch panel, a panel connecting block, and a second The power assembly, the second flange device, the second slider, the second guide chain, the second sliding track and the second support frame, the bottom end of the small false bottom panel is connected to the bottom fixing plate, and the panel connecting block It is welded directly under the small false bottom panel and connected with two panel repair plates, the panel repair plates are welded on the second slider, and the second power assembly is connected to the second sliding track through the second flange device connected, the rotating shaft of the second power assembly is connected to the second slider through the second guide chain, the second slider is slidably supported on the second sliding track, and the second sliding track is connected to the small false bottom panel Into a 90-degree angle.

Preferably, the bottom fixing plate is welded on the small false bottom panel

Preferably, the side of the first wedge is fixed on the vertical fixing block.

As preferably, the measurement analysis control module includes a data acquisition processor, a motion controller and a display, and the input end of the data acquisition processor is connected to the three-component force meter in the top boundary module and the single-pointer in the bottom boundary module. The force meter and the fiber optic sensor are connected, and its output end is connected with the display; the motion controller includes a motion control output window and an image display port, the motion control output window is connected with the first power assembly of the top sliding module, and the bottom sliding module The second power assembly is connected, and the image display port is connected with the monitor.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

1. The present invention can realize the vortex-induced vibration test of the standpipe under the action of 90-degree uniform incoming flow;

2. The present invention can make full use of the lifting bottom of deep water pools in marine engineering to increase the safety factor of large-scale key installations;

3. The present invention can make full use of the depth of deep pools in marine engineering to simulate the real Reynolds number vortex-induced vibration of large pipe fittings;

4. The present invention can make full use of the width of deep pools in marine engineering to arrange real-time monitoring equipment around large pipes, and adjust the shape of the model according to different needs;

5. The present invention adopts a modular design, which has the advantages of being easy to install, easy to upgrade and change, and to meet different functional requirements.

Description of drawings

Fig. 1 is a schematic structural view of the experimental device provided by the present invention.

Fig. 2 is a top structural view of the experimental device provided by the present invention.

Fig. 3 is a bottom structural view of the experimental device provided by the present invention.

Fig. 4 is a schematic structural view of the deep-sea riser module provided by the present invention.

Fig. 5 is a schematic structural diagram of the top border module provided by the present invention.

Fig. 6 is a schematic structural diagram of the bottom boundary module provided by the present invention.

Fig. 7 is a side view of the fixing module provided by the present invention.

Fig. 8 is a schematic structural view of the top sliding module provided by the present invention.

Fig. 9 is a side view of the top sliding module provided by the present invention.

Fig. 10 is a schematic structural view of the bottom sliding module provided by the present invention.

Fig. 11 is a partial schematic diagram of the bottom sliding module provided by the present invention.

Fig. 12 is a schematic diagram of a 90-degree arrangement structure provided by the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

As shown in Figures 1-12, the embodiment of the present invention provides a test device for measuring the dynamic response of a slender riser with uniform out-of-plane flow, including a deep-sea riser module 1, a top boundary module 2, a bottom boundary module 3, and a fixed module 4 , a top sliding module 5, a bottom sliding module 6 and a measurement analysis control module 7, the two ends of the deep-sea riser module 1 are respectively connected with the top boundary module 2 and the bottom boundary module 3, and the fixed module 4 is connected with the top boundary module 2 Connected with the top sliding module 5, the deep-sea riser module 1 forms an angle of 90 degrees with the fixed module 4, the top sliding module 5 and the bottom sliding module 6 respectively, and the top sliding module 5 is also connected to the fixed end of the bottom of the trailer, And the plane where the top sliding module 5 is located is parallel to the moving direction of the trailer. The modules 6 are connected, the bottom sliding module 6 is connected with the bottom boundary module 3, the deep-sea riser module 1 includes a deep-sea riser model 9, an optical fiber sensor 8, and the optical fiber sensor 8 is arranged on the deep-sea riser. On the pipe model 9, the top of the deep-sea riser model 9 is connected to the top boundary module 2, the bottom of the deep-sea riser model 9 is connected to the bottom boundary module 3, and the plane where the riser model is located is fixed to the bottom The plane where the track is located forms an included angle of 90°. The top boundary module 2 includes the outer edge of the top clamp 10, screws 11, bottom plate 12 of the top clamp, the first backing plate 13, the first universal joint fixing plate 14, and the first universal joint Rotating device 15, second universal joint fixing plate 16, first three-component force meter fixing plate 17, first three-component force meter 18, first adjustment assembly 19, first wedge 20, outer edge of the top clamp 10 The screw 11 is connected with the deep-sea riser model 9, and the two planes form an angle of 90 degrees. The top clamp bottom plate 12 is affixed to the top clamp outer edge 11, and the top clamp bottom plate 12 is connected with the screw 11. The first backing plate 13 is connected, and the first universal joint fixing plate 14 is connected with the first backing plate 13 and the first universal joint rotating device 15, and the first universal joint rotating device 15 is connected with the first universal joint rotating device 15. The universal joint fixing plate 14 is affixed to the second universal joint fixing plate 16, and one side of the second universal joint fixing plate 16 and the three-component force meter fixing plate 17 are connected, and the three-component force meter fixing plate 17 The other side is connected to the three-component force meter 18, the end of the three-component force meter 18 is connected to the first adjustment assembly 19, and the other side of the first adjustment assembly 19 is fixed on the first wedge 20, The bottom boundary module 3 includes a bottom clamp outer edge 21, a screw I 22, a bottom clamp bottom plate 23, a second backing plate 24, a third universal joint fixing plate 25, a second universal joint rotating device 26, and a fourth universal joint joint fixing plate 27, the second three-component force meter fixing plate 28, the second three-component force meter 29 and the bottom fixing plate 30, the outer edge 21 of the bottom clamp is connected with the deep-sea riser model 9 through screws I22, and the two The plane where the person is located forms an included angle of 90 degrees, and the bottom fixture bottom plate 23 and the bottom fixture The outer edge 21 is affixed, the bottom clamp bottom plate 23 is affixed to the second backing plate 24, and the third universal joint fixing plate 25 is connected to the second backing plate 24 and the second universal joint rotating device 26, so The second universal joint rotating device 26 is fixedly connected with the third universal joint fixing plate 25 and the fourth universal joint fixing plate 27, and the fourth universal joint fixing plate 27 and the second three-component force meter fixing plate 28 One side is connected, the other side of the three-component force meter fixing plate 28 is connected with the three-component force meter 29, and the end of the three-component force meter 29 is connected with the bottom fixing plate 30, and the fixed module 4 includes a fairing 31, a vertical fixing plate 32 and a vertical fixing block 33, the top sliding module 5 includes a first power assembly 34, a first flange device 35, a first slider 36, a first guide chain 37, and a first sliding track 38 and the first support frame 39, the vertical fixing plate 32 is installed on the first slider 36, the vertical fixing block 33 is slidably installed on the vertical fixing plate 32, and the fairing 31 is respectively installed on both sides, and the vertical The fixed block 33 is affixed to the first wedge 20, the first power assembly 34 is connected to the first sliding track 38 through the first flange device 35, and the rotation shaft of the first power assembly 34 passes through the first guide The chain 37 is connected to the first sliding block 36, the first sliding block 36 is slidably supported on the first sliding track 38, and connected to the vertical fixing plate 32, and the bottom sliding module 6 includes a small false bottom panel 40, Panel patch 41, panel connection block 42, second power assembly 43, second flange device 44, second slider 45, second guide chain 46, second slide track 47 and second support frame 48, the small The bottom end of the false bottom panel 40 is connected to the bottom fixing plate 30, and the panel connection block 42 is welded directly below the small false bottom panel 40, and is connected with two panel repair boards 41, and the panel repair boards 41 are welded On the second slider 45, the second power assembly 43 is connected to the second sliding track 47 through the second flange device 44, and the rotation shaft of the second power assembly 43 is connected to the first sliding track 47 through the second guide chain 46. On the second sliding block 45 , the second sliding block 45 is slidably supported on the second sliding track 47 , and the second sliding track 47 forms an angle of 90 degrees with the small false bottom panel 40 .

The bottom fixing plate 30 is welded on the small false bottom panel 40

The side of the first wedge 20 is fixed on the vertical fixing block 33 .

The measurement analysis control module 7 includes a data acquisition processor, a motion controller and a display, and the input of the data acquisition processor is connected to the three-component force meter in the top boundary module and the single-component force meter in the bottom boundary module , and the fiber optic sensor is connected, and its output is connected with the display; the motion controller includes a motion control output window and an image display port, the motion control output window is connected with the first power assembly of the top sliding module, and the second of the bottom sliding module The power components are connected, and the image display port is connected with the monitor.

The specific implementation working principle of this device: During the test, the optical fiber sensor is evenly arranged on the deep-sea riser module in four directions, and the heat shrinkable tube is put on the riser (buoyancy blocks can be added if necessary), and the two ends of the riser are respectively connected. On the top boundary module and the bottom boundary module, they are respectively connected with the fixed module, the top sliding module and the bottom sliding module. During the test, relying on the lifting of the false bottom and the movement of the trailer, the riser model reaches the specified position and presents the specified The shape of the standpipe flows down a given surface, the movement of the riser is recorded by a high-speed camera, the strain is measured by an optical fiber sensor, and the data is sent to a computer for post-processing.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (4)

1. uniform flow measures elongated standpipe dynamic response device outside a kind of face, it is characterised in that including deep sea vertical pipe module, top Portion's boundary module, bottom boundary module, stuck-module, top slide module, basal sliding module and measurement analysis and Control module, The deep sea vertical pipe module two ends are connected with top boundary module and bottom boundary module respectively, the stuck-module and top Boundary module is connected with top slide module, the deep sea vertical pipe module respectively with stuck-module, top slide module and bottom Into 90 degree of angles, the top slide module is also associated with trailer bottom fixing end, and top slide module institute to portion's sliding block Place's plane is parallel with the trailer direction of motion, it is described measure analysis and Control module respectively with deep sea vertical pipe module, top boundary module, Bottom boundary module, stuck-module, top slide module, basal sliding module are connected, the basal sliding module with it is described Bottom boundary module is connected, and the deep sea vertical pipe module includes deep sea vertical pipe model and Fibre Optical Sensor, the Fibre Optical Sensor Device is arranged on the deep sea vertical pipe model, and the top of the deep sea vertical pipe model is connected with top boundary module, the depth The bottom of extra large riser model is connected with bottom boundary module, and plane where the riser model and bottom trapped orbit place Into 90 angles, described top boundary module includes top clamp outer rim to plane, screw, top clamp base plate, the first backing plate, the One universal joint fixed plate, the first universal joint tumbler, the second universal joint fixed plate, the one or three component instrument fixed plate, the one or three Component instrument, the first adjustment component, the first voussoir, the top clamp outer rim is connected by screw with deep sea vertical pipe model, and two , into 90 degree of angles, the top clamp base plate is affixed with the top clamp outer rim, the top clamp base plate for plane where person It is connected with first backing plate with by screw, the first universal joint fixed plate rotates dress with the first backing plate and the first universal joint Put and be connected, the first universal joint tumbler is affixed with the first universal joint fixed plate and the second universal joint fixed plate, described Second universal joint fixed plate and the one or three component instrument fixed plate side connect, the opposite side of the one or the three component instrument fixed plate and One or three component instrument is connected, and the end of the one or the three component instrument is connected with the first adjustment component, the first adjustment component Opposite side be fixed on the first voussoir, described bottom boundary module includes bottom jig outer rim, screw I, bottom jig bottom Plate, the second backing plate, the 3rd universal joint fixed plate, the second universal joint tumbler, the 4th universal joint fixed plate, the two or three component instrument Fixed plate, the two or three component instrument and bottom fixed board, the bottom jig outer rim pass through screw I and the deep sea vertical pipe model phase Connection, plane is into 90 degree of angles where both, and the bottom jig base plate is affixed with the bottom jig outer rim, the bottom folder Tool base plate is affixed with the second backing plate, and the 3rd universal joint fixed plate is connected with the second backing plate and the second universal joint tumbler Connect, the second universal joint tumbler is affixed with the 3rd universal joint fixed plate and the 4th universal joint fixed plate, the described 40000th Connected to section fixed plate and the two or three component instrument fixed plate side, the opposite side and the two or three of the two or the three component instrument fixed plate Component instrument is connected, and the end of the two or the three component instrument is connected with bottom fixed board, and the stuck-module includes radome fairing, is hung down Straight fixed plate and vertical fixed block, described top slide module include the first Power Component, first flange device, the first cunning Block, the first guide chain, the first sliding rail and the first support frame, described vertical fixing plate are arranged on the first sliding block, described to hang down Vertical fixed block is slidably fitted with straight fixed plate, both sides are separately installed with radome fairing, the vertical fixed block and the first voussoir Joint, first Power Component is connected by first flange device with the first sliding rail, first Power Component Rotary shaft be connected on the first sliding block by the first guide chain, first sliding block is slidably supported on the first sliding rail, and And be connected with vertical fixing plate, the basal sliding module includes small false bottom panel, and panel mends plate, panel contiguous block, second Power Component, second flange device, the second sliding block, the second guide chain, the second sliding rail and the second support frame, the small false bottom surface The bottom of plate is connected on bottom fixed board, and the panel contiguous block is welded on the underface of small false bottom panel, and with two pieces of faces Plate is mended plate and is connected, and the panel mends plate weld on the second sliding block, second Power Component by second flange device with Second sliding rail is connected, and the rotary shaft of second Power Component is connected on the second sliding block by the second guide chain, described Second sliding block is slidably supported on the second sliding rail, and the second sliding rail and small false bottom panel into 90 degree of angles.

2. uniform flow measures elongated standpipe dynamic response device outside a kind of face according to claim 1, it is characterised in that The bottom fixed board is welded on the small false bottom panel of basal sliding module.

3. uniform flow measures elongated standpipe dynamic response device outside a kind of face according to claim 1, it is characterised in that The side of first voussoir is fixed on the vertical fixed block.

4. uniform flow measures elongated standpipe dynamic response device outside a kind of face according to claim 1, it is characterised in that The measurement analysis and Control module includes data collection processor, motion controller and display, the data collection processor Input and the top boundary module in the one or three component instrument and bottom boundary module in single component instrument, and optical fiber Sensor is connected, and its output end is connected with display；Motion controller includes that motion control output window and image show Port, the first Power Component of motion control output window and the top slide module, the second power of basal sliding module Component is connected, and image display port is connected with display.