CN110749418A - Marine umbilical cable vortex-induced vibration test device and method - Google Patents
Marine umbilical cable vortex-induced vibration test device and method Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000009434 installation Methods 0.000 description 3
- 210000003954 umbilical cord Anatomy 0.000 description 3
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Abstract
The invention belongs to the technical field of fluid mechanics research, and relates to a device and a method for fluid mechanics tests. An ocean umbilical cable vortex-induced vibration test device, comprising: a top tension applying system and a securing system; the fixation system includes a bracket; the support is provided with an angle and height adjusting device, and the top tension applying system is arranged on the angle and height adjusting device. The device and the method have the advantages that: the umbilical cable vortex-induced vibration test with different inclination angles can be realized; the fixed system does not influence the flow field, and the accuracy of the flow field is ensured; tension is applied more accurately and stably, and experimental data are prevented from being distorted due to the movement of the top of the model.
Description
Technical Field
The invention belongs to the technical field of fluid mechanics research, and relates to a device and a method for fluid mechanics tests.
Background
The umbilical cable is used as an important auxiliary connection system for ocean oil and gas resource development, and provides cable power, optical fiber signals and medium transmission for an underwater production system. Ocean umbilical cable is in very complicated abominable environment, because the characteristic of the big slenderness ratio of umbilical cable itself and the characteristics that do not have the intermediate strut, the swirl that periodically drops in umbilical cable both sides produces periodic effort under certain ocean current effect, make umbilical cable cross flow to with produce the vortex induced vibration along the flow direction, thereby make umbilical cable take place fatigue failure easily, and then lead to the inside optic fibre of umbilical cable to take place to destroy, lead to the communication interrupt, seriously threaten the safety in production of whole oil gas, cause huge economic loss.
In the prior art, the invention patent CN208937285U discloses a marine umbilical cable vortex-induced vibration test device. Although the testing device can accurately apply and read the numerical value of the top tension, the device can only be applied to the pipe cable in the vertical direction and cannot simulate the influence of the included angle between the ocean pipe cable and the incoming flow direction on vortex-induced vibration under the real working condition. In addition, the testing device is in a suspended state through the weight tray, the weight and the nylon rope which apply the top tension, the top tension applying process is very easy to be interfered by the external environment, and the top tension applying process has high requirements on the environment.
Umbilicals have both bonded and unbonded forms. The numerical research and experimental research on the non-bonding umbilical cable have certain difficulty. At present, the overall analysis of the umbilical cable is generally realized by simplifying a non-bonding umbilical cable into a bonding type through a numerical simulation method, the influence of internal friction is not considered, the axial direction of a structure in actual engineering is not completely perpendicular to incoming flow, and the influence of an included angle between an ocean umbilical cable and the incoming flow direction on vortex-induced vibration is not clear. Therefore, the method has important significance for experimental simulation of the non-bonding umbilical cable and the bonding umbilical cable and research on vortex-induced vibration of the inclined flexible cylinder. Different pretension forces are required to be accurately applied to the umbilical cable model under a specific boundary connection mode in the process of experimental simulation so as to carry out different aspects of research.
Disclosure of Invention
The invention provides a device and a method for a marine umbilical cable vortex-induced vibration test, aiming at solving the problems in the research of an umbilical cable vortex-induced vibration test in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: an ocean umbilical cable vortex-induced vibration test device, comprising: a top tension applying system and a securing system; the fixation system includes a bracket; the support is provided with an angle and height adjusting device, and the top tension applying system is arranged on the angle and height adjusting device.
The angle and height adjusting device comprises a base platform, a top layer platform, at least one layer of angle adjusting platform and supporting legs for connecting the top layer platform and the angle adjusting platform, wherein the supporting legs are fixed on the support, and the height of the supporting legs is adjusted through a plurality of vertically arranged fixing holes formed in the support; the middle part of the angle adjusting platform is provided with a section of arc bending downwards, and the arc is provided with a plurality of angle adjusting holes.
The top tension applying system comprises a tension winch, a steel wire rope connected with the tension winch, a fixed pulley fixed above the top platform, a limiting pulley below the top platform and a long screw rod; the steel wire rope rounds the fixed pulley, passes through the limiting pulley and is connected with the long screw rod which passes through the angle adjusting hole; the long screw is fixed with the two sides of the angle adjusting platform through nuts.
The arc takes the center of the limiting pulley as a circle center and takes the distance between the center of the limiting pulley and the angle adjusting platform as a radius.
The angle adjusting holes are symmetrically distributed on the circular arc in a left-right mode by taking a vertical axis where the circle center is located as an axis.
The included angle between the connecting line of the angle adjusting hole and the circle center and the vertical axis is 0-45 degrees.
The angle and height adjusting device further comprises a base platform, wherein the base platform is provided with a sliding groove, and a bolt is installed in the sliding groove.
The invention also provides a method for testing vortex-induced vibration of the marine umbilical cable, which comprises the following steps:
according to the inclination angle of the umbilical cable model required by the test, the long screw penetrates through the corresponding angle adjusting hole;
the bottom end of the umbilical cable model is screwed and fixed with the bolt of the base platform through the universal hinge,
the top end of the umbilical cable model is connected with a tension meter through a universal hinge, and the tension meter is connected with a long screw rod;
tension is applied through a tension winch, and the tension is finely adjusted through nuts at the upper end and the lower end of the long screw rod until the requirement of a vortex-induced vibration test is met.
The umbilical cable model is a non-bonding umbilical cable model or a bonding umbilical cable model.
The umbilical cable model adopts a form that a copper stranded wire is inserted into an organic glass tube, wherein the organic glass tube and the copper stranded wire of the non-bonded umbilical cable model are in natural contact and can generate relative slippage; the outer part of the copper stranded wire in the bonding umbilical cable model is bonded and fixed with the inner wall of the organic glass pipe through an adhesive.
Compared with the prior art, the marine umbilical cable vortex-induced vibration test device and method have the beneficial effects that:
(1) the umbilical cable model is more fit with the object structure
The model adopts copper wire simulation umbilical cable inner structure functional unit to carry out spiral winding with certain helix angle, it is closer with actual umbilical cable inner structure unit contact mode.
(2) The test model considers whether friction exists between the internal structure unit and the external protective layer
Through bonding copper strands and organic glass pipe and adopting the natural contact two kinds of modes to simulate umbilical cable inside no friction and inside have two kinds of circumstances of friction, make the experimental data more perfect.
(3) The fixing system has small volume and light weight, and is convenient to transport and install
The fixing system is divided into three parts, namely a base platform, a support and an angle and height adjusting device, which are all made of square steel, and have high rigidity and light weight. And the bracket is fixed on the two side walls of the water tank by the G-shaped clamps, so that the stability of the system is improved.
(4) The fixing system does not influence the flow field, and the accuracy of the flow field application is ensured
The fixing system is only arranged on the base platform at the underwater part, the support and the angle and height adjusting device are both arranged above the water tank, the fixing system does not influence the water flow in the water tank, and the accuracy of the flow field is guaranteed.
(5) Umbilical cable vortex-induced vibration test capable of realizing different inclination angles
In the test, the adjustment of the inclination angle of the umbilical cable model is realized by adjusting the distance between the bracket and the angle and height adjusting device and the position of the universal hinge fixed on the sliding groove.
(6) The tension is applied more accurately and stably, and the experimental data is prevented from being distorted due to the top motion of the model
The tension meter is connected directly to the umbilical model and the top tension applied to the umbilical model can be seen directly. The tension winch and the fixed pulley are used for applying approximate required tension, and then fine adjustment is carried out through the adjusting nut on the long screw rod, so that the tension application is more accurate and stable, and the adaptability of the tension application precision to the test environment is strong. The two upper and lower arc sections of the platform limit the shaking of the top end of the umbilical cable model in the horizontal direction, and the nuts above and below the platform restrict the movement of the top end of the umbilical cable along the direction of the long screw rod, so that the influence of the movement of the top end of the umbilical cable on experimental data in the experiment is avoided.
Drawings
FIG. 1 is a front view of an marine umbilical vortex induced vibration testing apparatus of an embodiment of the present invention;
FIG. 2 is a right side view of an marine umbilical vortex induced vibration testing apparatus of an embodiment of the present invention;
FIG. 3 is a front view of the stand of FIG. 1;
FIG. 4 is a top view of the bracket;
FIG. 5 is a left side view (or right side view) of the stent;
FIG. 6 is a schematic view of the angle and height adjustment device;
FIG. 7 is a top view of the top deck platform;
FIG. 8 is a top view of the angular adjustment platform;
FIG. 9 is a schematic view of a base platform;
FIG. 10 is a schematic cross-sectional view of the chute;
FIG. 11 is a front view of the bolt;
FIG. 12 is a right side view (or left side view) of the bolt;
FIG. 13 is a schematic view of a bolt being placed into a chute;
FIG. 14 is a top view of the spacing pulley;
FIG. 15 is a detail view of a portion of FIG. 1 at A;
FIG. 16 is a schematic illustration of the internal copper strand configuration of the umbilical;
FIG. 17 is a schematic cross-sectional view of an umbilical model wherein: a is non-adhesive and b is adhesive.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment provided by the invention is as follows: an ocean umbilical cable vortex induced vibration test device, the structure of the device is shown in figures 1-2, and the device comprises: the tension winch comprises a tension winch 1, a steel wire rope 2, a fixed pulley 3, a limiting pulley 4, an angle adjusting platform 5, a long screw 6, a universal hinge 9, a support 11, a top supporting platform 12, a base platform 13 and a supporting leg 14. Wherein, the tension winch 1, the steel wire rope 2, the fixed pulley 3, the limit pulley 4, the long screw 6, the nut 7 and the tension meter 8 form a tension applying system of the embodiment; the angle adjusting platform 5, the long screw 6, the universal hinge 9, the support 11, the top support platform 12, the base platform 13 and the support leg 14 constitute a fixing system of this embodiment.
As shown in fig. 3-5, the support 11 is formed by welding 8 square steel pipes, the bottom frame is formed by welding 2 rectangular steel pipes and 2 shorter square steel pipes, the bottom frame is welded at the lower ends of the four vertical square steel pipes, and two sides of each longer steel pipe extend out of the edge of the support. A plurality of through holes 16 are arranged along the vertical steel pipe from top to bottom at equal intervals. In order to facilitate the connection of the bracket and the angle and distance adjusting device and the adjustment of the height between the bracket and the angle and distance adjusting device. Two longer square steel pipes of the bracket 11 are lapped on the side walls of two sides of the water tank in the direction vertical to the water flow. The clamping part and the side wall of the water tank are clamped tightly by the G-shaped clamp, so that the overall stability of the bracket during testing is ensured, the overall rigidity of the testing bracket is further increased, and the testing requirements are met.
As shown in fig. 6, the angle and height adjusting device includes a top supporting platform 12, an angle adjusting platform 5, a supporting leg 14 and a base platform 13. Wherein the top support platform 12 and the angle adjustment platform 5 are welded to the legs 14. The support legs 14 are composed of four steel pipes in four directions, and the lower ends of the support legs are provided with fixing holes 15. The top supporting platform 12 is a platform frame formed by welding square steel pipes.
In the tension applying system of this embodiment, the tension winch 1 is fixed to the truss support on the right side of the top support platform 12. The tension winch 1 is connected with the wire rope 2. Fixed pulley 3 and spacing pulley 4 weld respectively in the upper and lower both sides of top layer supporting platform 12 middle support, and wire rope 2 walks around fixed pulley 3 and passes from spacing pulley 4 is inside.
The angle adjusting platform 5 is a platform formed by welding square steel pipes, wherein a section of arc 19 bending downwards is arranged in the middle of the platform, and in the embodiment, the angle adjusting platform 5 has two layers which are respectively a middle layer arc adding platform and a lower layer arc adding platform. The radiuses of the arcs of the two layers of platforms are respectively the vertical distance from the arcs to the center of the limiting pulley 4. And 7 angle adjusting holes 20 are reserved on the circular arcs of the two layers of platforms respectively. The included angles between the connecting line of the angle adjusting hole 20 and the center of the limiting pulley 4 and the vertical direction are respectively 0 degree, 15 degrees, 30 degrees and 45 degrees.
The limiting pulley 4 is used for enabling a steel wire rope connected with the tension winch to swing in an arc with a constant radius so as to adapt to umbilical cable tests at different angles. The structure of the limiting pulley 4 is shown in fig. 14 and consists of two parts, an outer frame 41 and two inner rotary bearings 42. The outer frame 41 has a "return" configuration, and two bearings are mounted in parallel in a cavity 43 inside the outer frame 41. The two bearings 42 are variable-diameter cylinders, the diameter of the middle part of each bearing in the axial direction of the cylinder is larger than that of the two ends of each bearing, a gap 44 is formed between the middle parts of the two bearings, and a steel wire rope 2 connected with a tension winch bypasses the fixed pulley 3 and penetrates through the gap 44 in the middle of the limiting pulley 4. The position of the steel wire rope can be well controlled by the limiting pulley 4, and the unhindered rotation of the bearing can be realized.
The long screw 6 passes through the angle adjusting holes 20 on the two layers of platforms of the angle adjusting platform 5, and the upper side and the lower side of the long screw are respectively clamped and fixed with the circular arcs of the two layers of platforms through nuts 7. The upper end of the long screw 6 is connected with the lower end of the steel wire rope 2, and the lower end of the long screw 6 is used for connecting and fixing the top end of the umbilical cable model 10. The angle adjustment of the included angle between the umbilical cable model 10 and the vertical axis is realized by passing the long screw 6 through the angle adjusting holes 20 at different positions.
Because the length of the long screw 6 is constant, when the inclination angle of the umbilical cable model 10 is adjusted, the height of the long screw changes along with the long screw 6 being located in the angle adjusting holes 20 at different positions. The umbilical cable model, the long screw and the steel wire rope can be ensured to be in a straight line by adjusting to be positioned at a proper height. The height adjustment is realized by connecting and fixing the fixing holes 15 on the legs 14 with the through holes 16 at different positions on the bracket 11.
In order to further cooperate with the angle and height adjustment device to achieve the adjustment of the angle and height, a base platform 13 is further provided in this embodiment, as shown in fig. 9, the base platform 13 is used to fix the bottom end of the umbilical cable model 10. The base platform 13 is provided with a sliding groove 17, and a bolt 18 is arranged in the sliding groove. The cross section of the sliding groove 17 is shown in fig. 10, the sliding groove structure is in an inverted T shape with a narrow upper part and a wide lower part, the narrow upper part is a screw space, and the wide lower part is a nut space. In order to avoid that the bolt 18 rotates in the sliding groove 17 when the universal hinge 9 at the bottom end of the umbilical cable model 10 is connected with the bolt 18, the size of the bolt is manufactured according to the size of the sliding groove, as shown in fig. 11 and 12, the nut of the bolt 18 is rectangular, the wide side of the nut is slightly smaller than the width of the section of the sliding groove 17, and the long side of the nut is larger than the width of the section of the sliding groove. As shown in fig. 13, the bolt 18 is put into the sliding groove 17, and after the universal hinge is connected with the universal hinge, the bolt can be effectively prevented from rotating during installation and test.
In this embodiment, in order to restrict the rocking of the long screw 6 in the horizontal direction, as shown in fig. 15, the long screw 6 sequentially passes through the angle adjusting holes of the circular arc sections of the two layers of platforms, the upper side and the lower side of each layer of platform are fixed by clamping the long screw 6 with the nut 7, so that the rocking of the long screw in the horizontal direction is restricted, and the movement of the long screw along the long axis direction of the long screw is also restricted, so that the application of the top tension of the umbilical cable model is accurate and stable. And nuts are respectively additionally arranged at the joint of the universal hinge 9 and the tension meter 8 and the joint of the tension meter 8 and the long screw 6, and the upper nut and the lower nut are screwed tightly, so that the tension meter and the universal hinge are prevented from rotating in the test to influence the accuracy of test data.
The marine umbilical cable vortex-induced vibration test device of the embodiment has the following use method and working principle:
before the test, in order to ensure that the sliding groove of the base platform 13 and the arc section of the angle adjusting platform 5 are in the same vertical plane, the approximate height is calculated, four supporting legs 14 of the angle and height joint device are sleeved on four vertical steel pipes of the support 11 according to the height, and the fixing hole 15 and the through hole 16 are fixed by a screw or a pin.
The bottom end of the umbilical cable model 10 is connected with a universal hinge 9. The universal hinge 9 is connected with a bolt 18 in a sliding groove 17 of the base platform 13, the top end of the umbilical cable model 10 is connected with the tension meter 8 through the universal hinge 9, and the tension meter 8 is connected with the lower end of the long screw rod 6. The long screw 6 sequentially penetrates through corresponding angle adjusting holes 20 on two layers of platform arcs 19 of the angle adjusting platform 5 according to a required angle and is connected with the lower end of the steel wire rope 2. The tension meter 8 is connected with a tension count value display.
Use laser calibrating device at vertical direction calibration, guarantee that umbilical cable model 10, 2 hypomere of wire rope and 5 arc sections of angle adjustment platform are in same vertical plane through the height-adjusting, then firmly fix support 11 on basin both sides lateral wall with G word clamp, prevent the vibration. The base platform 5 is fixed at the bottom of the water tank.
During the test, the tension capstan 1 is used for applying approximate required tension, then the nut 7 at the upper end of the long screw 6 is used for fine adjustment, and the numerical value displayed by the tensiometer numerical value display is the top tension applied to the upper end of the umbilical cable model in the test.
Inaccuracies in the pre-tension application can result from friction between the wire rope and the fixed sheave and the tension capstan during testing and from sloshing of the wire rope during testing. The device utilizes the tension meter to be directly connected with the universal hinge at the upper end of the umbilical cable model, thereby ensuring the accuracy of tension application.
The second embodiment provided by the invention is as follows: a method for testing vortex-induced vibration of an ocean umbilical cable comprises the following specific steps:
(1) manufacture of umbilical cable model
The umbilical cable model of the embodiment comprises an inner copper stranded wire and an outer organic glass tube, in order to simulate a contact mode of spiral twisting between internal structure functional units of the umbilical cable, the umbilical cable model of the embodiment is formed by twisting seven copper wires with each other, as shown in fig. 16, the middle copper wire and the outer six copper wires are twisted and contacted in a mode that a helical angle α =9 degrees and a helical pitch h =178.5mm are tangent to the middle copper wire, and are processed by a professional twisting machine, the diameter of the copper stranded wire adopted in the embodiment is 9mm, the outer diameter of the organic glass tube adopted is 19mm, and the inner diameter of the organic glass tube is 9 mm.
And (3) carrying out spiral stranding on the copper wire at a selected spiral angle and a selected thread pitch to manufacture two copper stranded wires. Uniformly coating a modified acrylate adhesive on the outer part of the tube, putting the tube into a processed organic glass tube, and standing for 12 hours to ensure that the tube is firmly bonded; and the other copper stranded wire is directly put into the processed organic glass tube to be made into two models of a bonding type umbilical cable and a non-bonding type umbilical cable, as shown in figure 17.
(2) Mounting and fixing system
Weld four angles of base platform in the bottom of the basin, the installing support, angle and required approximate height of high adjusting device when calculating umbilical cable slope certain angle during the experiment to with four landing legs of angle and high adjusting device cover on four vertical steel pipes of support, pass the through-hole on the support and the fixed orifices on the landing leg with short screw rod or round pin, firmly connect two parts. And (3) calibrating in the vertical direction by using a laser calibrating device to enable the central line of the sliding chute and the central line of the arc section of the angle adjusting platform of the angle and height adjusting device to be positioned in the same vertical plane. After the calibration is finished, the bracket is clamped and fixed on the side wall of the water tank by using a G-shaped clamp. The bolt is installed in the sliding groove of the base platform, the universal hinge is connected to the bolt, the bolt is not screwed down firstly, and the bolt can slide along the sliding groove.
(3) Installation model
According to the inclination angle of the umbilical cable model required by the test, the long screw penetrates through the angle adjusting hole with a specific angle, nuts are screwed on the upper side and the lower side of the circular arc section of the two layers of platforms in advance by the long screw, enough space for the long screw to slide in the inclination direction is reserved, and then the tensiometer and the universal hinge are sequentially connected. Install the umbilical cord model bottom on the universal hinge of below, make the universal hinge of umbilical cord model top connection top through the position of adjusting the long screw rod to screw up the screw gently in four directions of two universal hinges respectively, prevent to lead to the destruction of umbilical cord model bottom too hard. And straightening the connected umbilical cable model along the direction of the long screw rod, and finally screwing the universal hinge at the bottom end of the umbilical cable and the bolt on the sliding groove to prevent the bottom end of the umbilical cable model from sliding. And (5) completing the model installation.
(4) Applying top tension
And top tension is applied through a tension winch, a steel wire rope, a fixed pulley and a limiting pulley. And directly connecting the tensiometer with a universal hinge at the top end of the umbilical cable model, wherein the reading on a tensiometer numerical display is the applied top tension. The tension capstan handle was fixed by turning the handle of the tension capstan and looking to observe the approximate top tension required for the value application test on the tensiometer value display. Two nuts about adjusting middle level adds the arc platform finely tune, and tension increases when screwing, and tension reduces when unscrewing. After the tension readings reach the numerical value required by the test, the upper nut and the lower nut of the lower layer arc adding platform are simultaneously screwed, the tension readings cannot be changed by debugging for a plurality of times in a back and forth mode when the lower layer arc adding platform is screwed, and the requirement of vortex-induced vibration is met by ensuring that the long screw cannot shake in the horizontal direction and the vertical direction in the test.
Claims (10)
1. The utility model provides an ocean umbilical cable vortex induced vibration test device which characterized in that includes: a top tension applying system and a securing system; the fixation system includes a bracket; the support is provided with an angle and height adjusting device, and the top tension applying system is arranged on the angle and height adjusting device.
2. The marine umbilical cable vortex-induced vibration test apparatus as claimed in claim 1, wherein the angle and height adjustment apparatus comprises a top deck platform, at least one layer of angle adjustment platform, and a leg connecting the top deck platform and the angle adjustment platform, the leg is fixed on the support and its height is adjusted by a plurality of vertically arranged fixing holes provided on the support; the middle part of the angle adjusting platform is provided with a section of arc bending downwards, and the arc is provided with a plurality of angle adjusting holes.
3. The marine umbilical vortex-induced vibration test apparatus of claim 2, wherein the top tension applying system comprises a tension winch, a steel wire rope connected with the tension winch, a fixed pulley fixed above the top platform, a limiting pulley fixed below the top platform, and a long screw; the steel wire rope rounds the fixed pulley, passes through the limiting pulley and is connected with the long screw rod which passes through the angle adjusting hole; the long screw is fixed with the two sides of the angle adjusting platform through nuts.
4. The marine umbilical vortex induced vibration test apparatus of claim 3, wherein the arc is centered on the center of the limiting pulley and has a radius of the distance between the center of the limiting pulley and the angle adjustment platform.
5. The marine umbilical vortex-induced vibration test apparatus of claim 4, wherein the angle adjustment holes are symmetrically distributed on the circular arc about a vertical axis where a center of the circle is located.
6. The marine umbilical vortex-induced vibration test apparatus of claim 5, wherein the angle between the line connecting the angle adjustment hole and the center of the circle and the vertical axis is 0-45 °.
7. The marine umbilical vortex-induced vibration testing apparatus of claim 2, wherein the angle and height adjustment apparatus further comprises a base platform, the base platform having a sliding slot, and a bolt is installed in the sliding slot.
8. A marine umbilical cable vortex-induced vibration test method comprises the following steps:
according to the inclination angle of the umbilical cable model required by the test, the long screw penetrates through the corresponding angle adjusting hole;
the bottom end of the umbilical cable model is screwed and fixed with a bolt in a sliding chute of the base platform through a universal hinge;
the top end of the umbilical cable model is connected with a tension meter through a universal hinge, and the tension meter is connected with a long screw rod;
tension is applied through a tension winch, and the tension is finely adjusted through nuts at the upper end and the lower end of the long screw rod until the requirement of a vortex-induced vibration test is met.
9. The marine umbilical vortex induced vibration test method of claim 8, wherein: the umbilical cable model is a non-bonding umbilical cable model or a bonding umbilical cable model.
10. The marine umbilical vortex induced vibration test method of claim 9, wherein: the umbilical cable model adopts a form that a copper stranded wire is inserted into an organic glass tube, wherein the organic glass tube of the non-bonded umbilical cable model is naturally contacted with the copper stranded wire; the outer part of the copper stranded wire of the bonding umbilical cable model is bonded and fixed with the inner wall of the organic glass pipe through an adhesive.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238769A (en) * | 2020-02-12 | 2020-06-05 | 新昌县城南乡王氏机械配件厂 | Marine umbilical cable vortex-induced vibration test device |
| CN111626007A (en) * | 2020-06-11 | 2020-09-04 | 中国科学院沈阳自动化研究所 | Umbilical cable dynamics model verification system |
| CN114778071A (en) * | 2022-04-07 | 2022-07-22 | 河海大学 | Submarine cable suspension device for submarine cable vortex-induced vibration test and experiment method |
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| CN114778071B (en) * | 2022-04-07 | 2024-04-19 | 河海大学 | Submarine cable suspension device for vortex-induced vibration test of submarine cable and experimental method |
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