CN110031165A - Simulate two-tube interference dynamic response experimental provision under uniform flow effect - Google Patents

Abstract

The invention provides an experimental device for simulating the dynamic response of double-pipe interference under the action of uniform flow, comprising a top motion module, a pre-tension adjustment module, a double-pipe relative position adjustment module, a riser end adjustment module, and a deep-sea riser group module. Measurement analysis module, bottom motion module. The top motion module is fixed on the horizontal trailer and is connected with the pretension adjustment module in the vertical direction. Both ends of the deep-sea riser module are sequentially connected to the riser end adjustment module and the double-pipe relative position adjustment module, and the bottom-end double-pipe relative position adjustment module is connected to the bottom motion module. The measurement and analysis module is fixed on the support frame of the top motion module, and the bottom motion module is fixed on the lift false bottom of the pool. The invention has the advantages of simple structure, quick and convenient change of working conditions during the experiment, high flexibility, simple operation and accurate measurement, and can truly simulate the double riser placed in a uniform flow field environment, and then analyze the interference vortex-induced vibration response of the double pipe under uniform flow.

Description

Experimental device for dynamic response of double-tube interference under simulated uniform flow

technical field

The invention relates to the technical field of marine engineering, in particular to an experimental device for simulating the dynamic response of a double pipe composed of two standpipes under the influence of interference under the action of uniform flow.

Background technique

Large-scale offshore platforms such as oil exploration platforms have long, thin and flexible working risers. Under the action of ocean currents, vortex-induced vibration will occur. In addition to accelerating the aging of working devices, the structural fatigue or possible resonance caused by vibration will seriously affect the working equipment. The safety of marine structures poses a great threat.

For large offshore platforms, there are often more than one working riser, such as the four columns of the semi-submersible platform and the many tension legs of the tension leg platform. Therefore, there is mutual interference between the working risers. Due to the mutual interference between the risers, the mechanism and phenomenon of the vortex-induced vibration of two pipes are more complicated than those of a single pipe. From the research on this phenomenon by domestic and foreign researchers, experimental research is an effective form to verify the theoretical prediction model.

At present, there are relatively few experimental studies on the double-tube interference, and the experimental device generally has the following shortcomings: (1) due to the complexity of the experimental device, there are few experiments related to the double-tube interference; (2) the working conditions are very different from the actual situation. Single, it is impossible to accurately predict the vortex-induced vibration of the working riser in the actual situation; (3) The large error of the riser strain measurement leads to a large deviation in the subsequent calculation.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the purpose of the present invention is to provide an experimental device for simulating the dynamic response of double-tube interference under the action of uniform flow.

According to the experimental device for simulating the dynamic response of double-tube interference under the action of uniform flow provided by the present invention, it includes a top motion module, a pretension adjustment module, a double-tube interference system, a measurement and analysis module, and a bottom motion module;

The measurement and analysis module is arranged on the upper part of the top motion module, the top motion module is vertically connected with one end of the pretension adjustment module, and the position of the pretension adjustment module in the horizontal direction of the top motion module can be adjusted;

The other end of the pretension adjustment module is connected with the upper end of the double-pipe interference system, and the lower end of the double-pipe interference system is connected with the bottom motion module;

The measurement and analysis module includes a data acquisition processor and a uniform motion controller. The uniform motion controller makes the double-pipe interference system move at a uniform speed in the horizontal direction, and the motion of the top motion module and the bottom motion module are synchronized, and the double-pipe interference system and the bottom The motion module is kept vertical, and the data acquisition processor can acquire motion data of the double-tube interference system.

Preferably, the double-pipe interference system includes a double-pipe relative position adjustment module, a riser end adjustment module, and a deep-sea riser group module;

The deep-sea riser group module is composed of two risers, the two ends of each riser are respectively connected with a riser end adjustment module, and the riser end adjustment module connected with the upper end of the riser is arranged below the relative position adjustment module of the double pipes, The riser end adjustment module connected with the lower end of the riser is arranged above the relative position adjustment module of the double pipes.

Preferably, the double-pipe relative position adjustment module includes a double-pipe position adjustment plate, a main pipe connecting flange device, a secondary pipe connecting flange device, a central flange device, and a nut;

The main pipe connecting flange device and the auxiliary pipe connecting flange device are respectively connected with a corresponding riser;

The double-pipe position adjustment plate is connected to the pre-tension adjustment module through the central flange device. The double-pipe position adjustment plate is provided with a moving groove for the auxiliary pipe, and the connecting flange device for the auxiliary pipe is fixed in the moving groove of the auxiliary pipe through a nut. to adjust the double-pipe spacing.

Preferably, the riser end adjustment module includes a three-component force gauge sensor, a riser end clamp, a universal joint and a screw;

The fixed end of the universal joint is connected with the fixture at the end of the riser, the movable end of the universal joint is connected with one end of the three-component force meter sensor, and the other end of the three-component force meter sensor is connected with the main pipe connection flange device or the auxiliary pipe connection flange The device is connected, and the data of the three-component force meter sensor is collected by the data acquisition processor;

The standpipe end clamp clamps the standpipe, and the screw is connected with the threaded hole of the standpipe end clamp, so that the clamped degree of the standpipe can be adjusted.

Preferably, the surface of the riser is evenly provided with optical fiber sensors, the optical fiber sensors can measure the movement of the riser, and the data of the optical fiber sensors are collected by the data acquisition processor.

Preferably, the top motion module includes a guide chain, a support frame, a top horizontal sliding track, a top horizontal sliding block, a vertical sliding track, a power assembly, a vertical sliding block, and a fairing;

The measurement and analysis module is connected with the support frame, and the support frame is arranged above the top horizontal sliding track;

The top horizontal sliding track is connected with the guide chain;

The guide chain drives the top horizontal slider to move on the top horizontal sliding track through the power assembly, and the top horizontal slider is connected with the fairing;

The power components are driven by the uniform motion controller;

The vertical sliding track is arranged on the fairing, and the vertical sliding block can slide on the vertical sliding track.

Preferably, the pretension adjustment module includes an end connector, a tensioner fixing plate and a compression spring tensioning assembly;

One end of the end connecting piece is connected with the vertical sliding block, the other end of the end connecting piece is connected with the tensioner fixing plate, and the compression spring tensioning assembly can adjust the movement tension of the double-pipe interference system.

Preferably, the bottom motion module includes a bottom horizontal sliding track, a bottom horizontal slider, a bottom power assembly, and a false bottom;

The bottom horizontal sliding track is set on the false bottom, the bottom horizontal sliding track is parallel to the top horizontal sliding track, the bottom power component drives the bottom horizontal sliding block to slide on the bottom horizontal sliding track, and the movement direction and speed of the bottom horizontal sliding block are the same as the top horizontal sliding track. the same block;

The bottom horizontal slider is connected with the riser end adjustment module, and the bottom power assembly is driven by the uniform motion controller.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention contains a large number of working conditions, which is very representative, and the used riser is scaled down from the actual working riser, which can better simulate the vortex-induced vibration response of the working riser in actual work;

2. Compared with other similar devices, the present invention is more simplified, easy to disassemble, and easy to convert working conditions, which is a huge improvement compared to other testing devices;

3. The present invention has high flexibility. Through the cooperation of the pretension adjustment module and the three-component force meter sensor, precise control and adjustment of the pretension of the riser can be realized so as to be adjusted according to the actual working conditions.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the structural representation of the experimental apparatus provided by the present invention;

Fig. 2 is the top structure diagram of the experimental apparatus provided by the present invention;

Fig. 3 is the bottom structure diagram of the experimental device provided by the present invention;

Fig. 4 is the structural representation of the top motion module provided by the present invention;

5 is a schematic structural diagram of a pretension adjustment module provided by the present invention;

6 is a schematic structural diagram of a dual-tube relative position adjustment module provided by the present invention;

7 is a side view of the dual-tube relative position adjustment module provided by the present invention;

8 is a schematic structural diagram of a riser end adjustment module provided by the present invention;

Fig. 9 is the installation schematic diagram of the end of the riser provided by the present invention;

10 is a schematic structural diagram of a bottom motion module provided by the present invention;

FIG. 11 is a schematic structural diagram of a deep-sea riser provided by the present invention.

The figure shows:

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.

Aiming at the shortcomings of the above-mentioned existing experimental devices, the present invention provides an experimental device for dynamic response of double-tube interference under the action of simulating uniform flow. It can simulate the vortex-induced vibration under the condition of mutual interference of double tubes under the action of uniform flow, and study its response characteristics. It has the advantages of being close to the actual situation, covering a wide range of working conditions, convenient disassembly of the device, and cost saving.

An experimental device for dynamic response of double-tube interference under the action of simulating uniform flow provided according to the present invention includes a top motion module 1, a pretension adjustment module 2, a double-tube interference system, a measurement and analysis module 7, and a bottom motion module 6;

The measurement analysis module 7 is arranged on the upper part of the top motion module 1, the top motion module 1 is connected with one end of the pretension adjustment module 2 in a vertical direction, and the position of the pretension adjustment module 2 in the horizontal direction of the top motion module 1 can be adjusted;

The other end of the pretension adjustment module 2 is connected with the upper end of the double-pipe interference system, and the lower end of the double-pipe interference system is connected with the bottom motion module 6;

The measurement and analysis module 7 includes a data acquisition processor and a uniform motion controller. The uniform motion controller makes the double-pipe interference system move at a uniform speed in the horizontal direction, and the movements of the top motion module 1 and the bottom motion module 6 are synchronized, and the double-pipe interference The system is kept vertical to the bottom motion module 6, and the data acquisition processor can collect motion data of the double-tube interference system.

Specifically, the double-pipe interference system includes a double-pipe relative position adjustment module 3, a riser end adjustment module 4, and a deep-sea riser group module 5;

The deep-sea riser group module 5 is composed of two risers 35, the two ends of each riser are respectively connected with a riser end adjustment module 4, and the riser end adjustment module 4 connected with the upper end of the riser 35 is arranged in the relative position of the double pipes Below the adjustment module 3 , the riser end adjustment module 4 connected to the lower end of the riser 35 is arranged above the double-pipe relative position adjustment module 3 .

Specifically, the double-pipe relative position adjustment module 3 includes a double-pipe position adjustment plate 19 , a main pipe connecting flange device 21 , an auxiliary pipe connecting flange device 22 , a central flange device 23 , and a nut 24 ;

The main pipe connecting flange device 21 and the auxiliary pipe connecting flange device 22 are respectively connected with a corresponding riser 35;

The double-pipe position adjustment plate 19 is connected to the pretension adjustment module 2 through the central flange device 23 , the double-pipe position adjustment plate 19 is provided with a sub-pipe moving groove 20 , and the auxiliary-pipe connecting flange device 22 is fixed by a nut 24 The auxiliary pipe is placed in the moving groove 20 to adjust the distance between the double pipes.

Specifically, the riser end adjustment module 4 includes a three-component force gauge sensor 26, a riser end clamp 27, a universal joint 28 and a screw 25;

The fixed end of the universal joint 28 is connected with the standpipe end fixture 27, the movable end of the universal joint 28 is connected with one end of the three-component force gauge sensor 26, and the other end of the three-component force gauge sensor 26 is connected with the main pipe connecting flange device 21 Or the auxiliary pipe connecting flange device 22 is connected, and the data of the three-component force meter sensor 26 is collected by the data acquisition processor;

The standpipe end clamp 27 clamps the standpipe 35, and the screw 25 is connected to the threaded hole of the standpipe end clamp 27, so that the degree of clamping of the standpipe 35 can be adjusted.

Specifically, the surface of the riser 35 is uniformly provided with an optical fiber sensor 36, the optical fiber sensor 36 can measure the movement of the riser 35, and the data of the optical fiber sensor 36 is collected by the data acquisition processor.

Specifically, the top motion module 1 includes a guide chain 8, a support frame 9, a top horizontal sliding track 10, a top horizontal sliding block 11, a vertical sliding track 12, a power assembly 13, a vertical sliding block 14, and a fairing 15;

The measurement and analysis module 7 is connected with the support frame 9, and the support frame 9 is arranged above the top horizontal sliding track 10;

The top horizontal sliding track 10 is connected with the guide chain 8;

The guide chain 8 drives the top horizontal slider 11 to move on the top horizontal sliding track 10 through the power assembly 13, and the top horizontal slider 11 is connected with the fairing 15;

The power assembly 13 is driven by the uniform motion controller;

The vertical sliding track 12 is arranged on the fairing 15, and the vertical sliding block 14 can slide on the vertical sliding track 12 to adjust the relative position of the double-pipe interference system in the vertical direction.

Specifically, the pretension adjustment module 2 includes an end connecting piece 16, a tensioner fixing plate 17 and a compression spring tensioning assembly 18;

One end of the end connector 16 is connected to the vertical slider 14, and the other end of the end connector 16 is connected to the tensioner fixing plate 17. The compression spring tensioning assembly 18 can adjust the movement tension of the double-tube interference system. Tube pre-tension is finely adjusted.

Specifically, the bottom motion module 6 includes a bottom horizontal sliding track 31, a bottom horizontal slider 30, a bottom power assembly 29, and a false bottom 32;

The bottom horizontal sliding track 31 is arranged on the false bottom 32. The bottom horizontal sliding track 31 is parallel to the top horizontal sliding track 10. The bottom power assembly 29 drives the bottom horizontal sliding block 30 to slide on the bottom horizontal sliding track 31. The movement direction and speed are the same as the top horizontal slider 11;

The bottom horizontal slider 30 is connected with the riser end adjustment module 4, and the bottom power assembly 29 is driven by the uniform motion controller.

The preferred embodiments of the present invention will be further described below with reference to the accompanying drawings.

As shown in Figures 1-11, the embodiment of the present invention provides an experimental device for the dynamic response of double-tube interference under the action of simulating uniform flow, including a top motion module 1, a pre-tension adjustment module 2, a double-tube relative position adjustment module 3, a vertical Pipe end adjustment module 4 , deep sea riser group module 5 , measurement analysis module 7 , bottom movement module 6 .

The measurement and analysis module 7 is fixed on the top motion module 1 through the support frame 9 , the top horizontal sliding track 10 is connected with the guide chain 8 , and the guide chain 8 drives the top horizontal slider 11 on the horizontal sliding track 10 through the power assembly 13 . Sliding upward, the top horizontal slider 11 is fixed to the fairing 15 , the vertical sliding track 12 is fixed on the fairing 15 , and the vertical slide 14 can slide on the vertical sliding track 12 .

The pretension adjustment module 2 includes an end connecting piece 16 , a tensioner fixing plate 17 and a compression spring tensioning assembly 18 . The end connecting piece 16 is fixed with the vertical slider 14 , and the bottom of the module is fixed with the double-pipe relative position adjustment module 3 through the top connecting piece 33 .

The double-pipe relative position adjustment module 3 includes a double-pipe position adjustment plate 19 , a main pipe connecting flange device 21 , an auxiliary pipe connecting flange device 22 , a center flange device 23 and a nut 24 . The central flange devices 23 at both ends of the double-pipe interference system are respectively fixed with the top connecting piece 33 and the bottom connecting piece 34 , and with the double-pipe position adjusting plate 19 . The main pipe connecting flange device 21 and the center of the double pipe position adjusting plate 19 are fixed with a nut 24 , and the auxiliary pipe connecting flange device 22 is fixed in the auxiliary pipe moving groove 20 of the insert plate 19 through the nut 24 .

The standpipe end adjustment module 4 includes a three-component force gauge sensor 26 , a standpipe end clamp 27 , a universal joint 28 and a screw 25 . The three-component force gauge sensor 26 is fixed to the main pipe connection flange device and the auxiliary pipe connection flange device of the dual-pipe relative position adjustment module 3, and the riser end clamp 27 is used for the deep-sea riser group module 5. The neutral pipe 35 fixed.

The deep-sea riser group module 5 is composed of a plurality of risers 35 and surface optical fiber sensors 36 thereof, and the optical fiber sensors 36 are evenly arranged on each deep-sea riser 35 . The upper and lower ends of the standpipe and the standpipe end clamps 27 are fixed by screws 25 .

The measurement and analysis module 7 includes: a data acquisition processor, a motion controller and a display. Wherein: the data acquisition processor is used to collect the data of each three-component force meter sensor 26 and the optical fiber sensor of the double-pipe interference system, the motion control system is used to control the motion of the power assembly 13 and the bottom power assembly 29, the The monitor is used to monitor the experimental results in real time.

The bottom motion module 6 includes: a bottom horizontal sliding track 31 , a bottom horizontal slider 30 , a bottom power component 29 and a small false bottom 32 . The bottom horizontal sliding rail 30 is parallel to the top horizontal sliding rail 10 , and the bottom horizontal sliding block 30 is fixed to the bottom connecting member 34 .

The working principle of this specific implementation: Before the experiment, the fiber grating sensor is evenly arranged on the deep-sea riser group module, and the two ends of the riser are connected to the riser end adjustment module and the double-tube relative position adjustment module in turn. The top of the double-pipe interference system is fixedly connected with the pretension adjustment module and the top motion module, and the bottom is connected with the bottom motion module. , During the test, relying on the lifting of the false bottom and the movement of the trailer, the riser model reaches the designated position and presents the designated shape, adjusts the distance between the risers through the relative position adjustment module of the double tubes, and controls the motor through the computer in the measurement analysis module. The riser is made to move at a uniform speed in the horizontal direction, 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 transmitted to the computer for post-processing.

In the experiment, due to the effect of the fairing and other devices, the influence of the experimental devices other than the standpipe on the water flow was weakened, and the accuracy and accuracy of the experiment were ensured.

In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily, provided that there is no conflict.

Claims (8)

1. a dual-tube interference dynamic response experimental device under the action of a simulated uniform flow, is characterized in that, comprising a top motion module (1), a pretension adjustment module (2), a dual-tube interference system, a measurement and analysis module (7), a bottom motion module (6); The measurement and analysis module (7) is arranged on the upper part of the top motion module (1), the top motion module (1) is connected with one end of the pretension adjustment module (2) in a vertical direction, and the pretension adjustment module (2) is in the top motion module (1) The position in the horizontal direction can be adjusted; The other end of the pretension adjustment module (2) is connected with the upper end of the double-pipe interference system, and the lower end of the double-pipe interference system is connected with the bottom motion module (6); The measurement and analysis module (7) includes a data acquisition processor and a uniform motion controller, and the uniform motion controller makes the double-pipe interference system move at a uniform speed in the horizontal direction, and the top motion module (1) and the bottom motion module (6) have a uniform motion. The movement is synchronized, the double-pipe interference system is kept perpendicular to the bottom motion module (6), and the data acquisition processor can collect motion data of the double-pipe interference system. 2. The experimental device for dynamic response of double-pipe interference under the action of simulated uniform flow according to claim 1, wherein the double-pipe interference system comprises a double-pipe relative position adjustment module (3) and a riser end adjustment module (4) , deep-sea riser group module (5); The deep-sea riser group module (5) is composed of two risers (35), two ends of each riser are respectively connected with a riser end adjustment module (4), and the riser end connected with the upper end of the riser (35) is adjusted The module (4) is arranged below the double-pipe relative position adjustment module (3), and the riser end adjustment module (4) connected to the lower end of the riser (35) is arranged above the double-pipe relative position adjustment module (3). 3. The experimental device for double-pipe interference dynamic response under the action of simulated uniform flow according to claim 2, wherein the double-pipe relative position adjustment module (3) comprises a double-pipe position adjustment plate (19), a main pipe connecting flange device (21), auxiliary pipe connecting flange device (22), central flange device (23), nut (24); The main pipe connection flange device (21) and the auxiliary pipe connection flange device (22) are respectively connected with a corresponding riser (35); The double-pipe position adjusting plate (19) is connected to the pre-tension adjusting module (2) through the central flange device (23), and the double-pipe position adjusting plate (19) is provided with an auxiliary pipe moving groove (20). The flange device (22) is fixed in the auxiliary pipe moving groove (20) by a nut (24), so as to adjust the distance between the double pipes. 4. The experimental device for dynamic response of double-pipe interference under the action of simulated uniform flow according to claim 2, wherein the standpipe end adjustment module (4) comprises a three-component force gauge sensor (26), a standpipe end clamp (27), universal joint (28) and screw (25); The fixed end of the universal joint (28) is connected with the standpipe end clamp (27), the movable end of the universal joint (28) is connected with one end of the three-component force meter sensor (26), and the three-component force meter sensor (26) The other end is connected with the main pipe connecting flange device (21) or the auxiliary pipe connecting flange device (22), and the data of the three-component force meter sensor (26) is collected by the data acquisition processor; The standpipe end clamp (27) clamps the standpipe (35), the screw (25) is connected with the threaded hole of the standpipe end clamp (27), and the clamping degree of the standpipe (35) can be adjusted. 5. The experimental device for dynamic response of double-tube interference under the action of simulated uniform flow according to claim 2, wherein the surface of the riser (35) is uniformly provided with an optical fiber sensor (36), and the optical fiber sensor (36) can measure the vertical The movement of the tube (35), the data of the optical fiber sensor (36) are collected by the data acquisition processor. 6. The double-tube interference dynamic response experimental device under the action of simulated uniform flow according to claim 1, wherein the top motion module (1) comprises a guide chain (8), a support frame (9), a top horizontal sliding track ( 10), a top horizontal slider (11), a vertical sliding track (12), a power assembly (13), a vertical slider (14), and a fairing (15); The measurement and analysis module (7) is connected with the support frame (9), and the support frame (9) is arranged above the top horizontal sliding track (10); The top horizontal sliding track (10) is connected with the guide chain (8); The guide chain (8) drives the top horizontal slider (11) to move on the top horizontal sliding track (10) through the power assembly (13), and the top horizontal slider (11) is connected with the fairing (15); The power assembly (13) is driven by the uniform motion controller; The vertical sliding track (12) is arranged on the fairing (15), and the vertical sliding block (14) can slide on the vertical sliding track (12). 7. The experimental device for dynamic response of double-tube interference under the action of simulated uniform flow according to claim 7, wherein the pretension adjustment module (2) comprises an end connector (16), a tensioner fixing plate (17) and the compression spring tensioning assembly (18); One end of the end connecting piece (16) is connected with the vertical sliding block (14), the other end of the end connecting piece (16) is connected with the tensioner fixing plate (17), and the compression spring tensioning assembly (18) can Adjust the motion tension of the double tube interference system. 8. The double-tube interference dynamic response experimental device under the action of simulated uniform flow according to claim 7, wherein the bottom motion module (6) comprises a bottom horizontal sliding track (31), a bottom horizontal slider (30), a bottom Power assembly (29), false bottom (32); The bottom horizontal sliding track (31) is arranged on the false bottom (32), the bottom horizontal sliding track (31) is parallel to the top horizontal sliding track (10), and the bottom power component (29) drives the bottom horizontal slider (30) to be horizontal at the bottom Sliding on the sliding track (31), the movement direction and speed of the bottom horizontal slider (30) are the same as those of the top horizontal slider (11); The bottom horizontal slider (30) is connected with the riser end adjustment module (4), and the bottom power assembly (29) is driven by the uniform motion controller.