An experimental device for a fully coupled taut mooring system

Abstract

The present invention relates to the field of marine engineering technology and discloses an experimental device for a fully coupled taut mooring system, comprising a water tank, a cable, a float, a soil box, and a test bench. The water tank is used to provide a water environment, and the soil box and the test bench are sequentially mounted on the water tank; an anchor is provided in the soil box, and a diverting pulley is provided on the test bench; a wave-making plate is provided at one end of the water tank, and an anchoring roller skate and an anchoring device are provided at the bottom of the water tank; one end of the float is fixedly connected to the anchoring device via a cable, and the other end is sequentially connected to the anchoring roller skate, the diverting roller skate, and the anchor via another cable. The beneficial effect of the present invention is that it can realistically and comprehensively simulate the response characteristics of each part of the taut mooring system under the action of environmental loads and the results of the synergistic effect of each part.

Description

Technical Field

[0001] The invention belongs to the technical field of marine engineering and relates to an experimental device for a fully coupled taut mooring system. Background Art

[0002] Marine engineering mooring systems can generally be divided into catenary mooring systems and taut mooring systems. Compared to catenary mooring systems, taut mooring systems have a smaller mooring radius and are lighter overall, typically using fiber mooring lines. With the advancement of offshore oil and gas resource development technology, the depth of floating platforms has expanded, and the application of taut mooring systems and fiber mooring lines has become increasingly widespread. Therefore, conducting detailed experimental research on taut mooring systems is of great significance.

[0003] However, existing experimental devices only consider the interaction between waves and structures, the study of the stress characteristics of mooring cables, the interaction between chains and soil, and the interaction between anchors and soil, and fail to simulate the real characteristics of the entire mooring system. Summary of the Invention

[0004] In response to the defects in the prior art, the present invention provides an experimental device for a fully coupled taut mooring system, which can truly and comprehensively simulate the response characteristics of each part of the taut mooring system and the synergistic effects of each part under environmental loads.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An experimental device for a fully coupled taut mooring system includes a water tank, a cable, a floating body, a soil box, and a test bench. The water tank is used to provide a water environment, and the soil box and the test bench are sequentially mounted on the water tank; an anchor is provided in the soil box, and a steering pulley is provided on the test bench; a wave-making plate is provided at one end of the water tank, and an anchoring roller skate and an anchoring device are provided at the bottom of the water tank; one end of the floating body is fixedly connected to the anchoring device via a cable, and the other end is sequentially connected to the anchoring roller skate, the steering roller skate, and the anchor via another cable.

[0007] Furthermore, a wave-breaking platform is provided at the other end of the water tank. The setting of the wave-breaking platform is used to prevent reflected waves from affecting the hydrodynamic conditions of the experimental area, so as to ensure the accuracy of the experiment.

[0008] Furthermore, the experimental device of the present invention also includes an anchor chain, and the cable is connected to the floating body through the anchor chain, one end of the anchor chain is fixedly connected to the cable, and the other end is fixedly connected to the floating body.

[0009] Furthermore, the soil box is fixedly arranged above the wave-making plate and fixedly arranged on the upper part of the water tank.

[0010] Furthermore, tracks are respectively provided on both sides of the soil box, and track pulleys are provided at the lower part of the test bench. The track pulleys are matched with the tracks, so that the test bench can slide on the water tank.

[0011] Furthermore, the test bench includes a table top arranged at the top and support legs for supporting the table top.

[0012] Furthermore, the test bench includes a table top arranged at the top and support legs for supporting the table top, and track pulleys are provided at the bottom of the support legs.

[0013] Furthermore, the support legs are lifting legs that can adjust the height of the test bench.

[0014] Furthermore, both ends of the table are provided with steering pulleys, which are used to change the direction of the mooring cable.

[0015] Furthermore, a laser displacement sensor is provided on the test bench, and a cable marking segment is provided on the cable segment between the steering pulley and the anchor. The laser displacement sensor is provided below the cable marking segment, and the laser displacement sensor is used to measure the displacement of the cable marking segment; a tension sensor is also provided on the cable segment between the steering pulley and the anchor, and the tension sensor is used to collect the tension data of the cable.

[0016] Furthermore, the cable, anchor, deflection pulley, anchor pulley and anchoring device are provided as a set, and the experimental device is provided with at least one set. When there are at least an even number of sets, the cable, anchor, deflection pulley, anchor pulley and anchoring device are symmetrically provided as a set; when there are an odd number of sets, the cable, anchor, deflection pulley, anchor pulley and anchoring device are evenly provided as a set.

[0017] Compared with the prior art, the present invention provides an experimental device for a fully coupled taut mooring system, which has the following beneficial effects:

[0018] (1) The experimental device of the present invention is a fully coupled taut mooring system experimental device that couples the interaction between waves and structures, the response of mooring cables, and the interaction between anchors and soil. It can truly and comprehensively simulate the response characteristics of each part of the taut mooring system and the results of the synergistic effect of each part under the action of environmental loads, making up for the defects of the existing experimental devices with single part response characteristics. It is an experimental device that can comprehensively study the taut mooring system.

[0019] (2) The experimental device of the present invention can meet the requirements of different working loads, different types of floats, different mooring materials, and different types of anchors by changing the materials and models of each part, and further comprehensively simulate the response characteristics of each part of the taut mooring system and the results of the synergistic effect of each part. It can be widely used in the simulation and research of the taut mooring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the experimental device of the present invention;

[0021] Figure 2 Schematic diagram of the top view of the experimental device of the present invention;

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the experimental device of the present invention.

[0023] The meanings of the reference numerals in the figure are: 1. water tank; 2. wave-making plate; 3. wave-breaking platform; 4. anchoring device; 5. anchoring pulley; 6. cable; 7. anchor chain; 8. floating body; 9. test bench; 10. support leg; 11. steering pulley; 12. tension sensor; 13. laser displacement sensor; 14. soil box; 15. anchor; 16. track pulley; 17. track. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 3 As shown, the experimental device of the present invention includes a water tank 1, a cable 6, a floating body 8, a soil box 14 and a test bench 9. The water tank 1 is used to provide a water environment. The soil box 14 and the test bench 9 are sequentially mounted on the water tank 1; an anchor 15 is provided in the soil box 14, and a steering pulley 11 is provided on the test bench 9; a wave-making plate 2 is provided at one end of the water tank 1, and an anchor 15 for fixing roller skates and an anchor device 4 are provided at the bottom of the water tank 1; one end of the floating body 8 is fixedly connected to the anchor device 4 through a cable 6, and the other end is connected to the anchor 15 for fixing roller skates, the steering roller skates and the anchor 15 in sequence through another cable 6.

[0026] In a specific implementation of this embodiment, a wave-breaking platform 3 is provided at the other end of the water tank 1. The wave-breaking platform 3 is provided to prevent reflected waves from affecting the hydrodynamic conditions of the experimental area, so as to ensure the accuracy of the experiment.

[0027] In a specific implementation of this embodiment, the experimental device of the present invention further includes an anchor 15 chain 7, and the cable 6 is connected to the floating body 8 through the anchor 15 chain 7. One end of the anchor 15 chain 7 is fixedly connected to the cable 6, and the other end is fixedly connected to the floating body 8.

[0028] In a specific implementation of this embodiment, the soil box 14 is fixedly arranged above the wave-making plate 2 and fixedly arranged on the upper part of the water tank 1.

[0029] In a specific implementation of this embodiment, tracks 17 are respectively provided on both sides of the soil box 14, and track pulleys 16 are provided at the lower part of the test bench 9. The track pulleys 16 are matched with the tracks 17 so that the test bench 9 can slide on the water tank 1.

[0030] In a specific implementation of this embodiment, the test bench 9 includes a table top provided at an upper portion and support legs 10 for supporting the table top.

[0031] In a specific implementation of this embodiment, the test bench 9 includes a table top provided at the upper portion and support legs 10 for supporting the table top, and a track pulley 16 is provided at the lower portion of the support legs 10 .

[0032] In a specific implementation of this embodiment, the support legs 10 are lifting legs that can adjust the height of the test bench 9 .

[0033] In a specific implementation of this embodiment, a diverting pulley 11 is provided at both ends of the table top, and the diverting pulley 11 is used to change the direction of the mooring cable.

[0034] In a specific implementation of this embodiment, a laser displacement sensor 13 is provided on the test bench 9, a cable marking segment is provided on the cable segment between the steering pulley 11 and the anchor 15, and the laser displacement sensor 13 is provided below the cable marking segment. The laser displacement sensor 13 is used to measure the displacement of the cable marking segment; a tension sensor 12 is also provided on the cable segment between the steering pulley 11 and the anchor 15. The tension sensor 12 is used to collect the tension data of the cable 6.

[0035] In a specific implementation of this embodiment, the cable 6, anchor 15, deflection pulley 11, anchor pulley 5 and anchoring device 4 are provided as a set, and the experimental device is provided with at least one set. When there are at least an even number of sets, the cable 6, anchor 15, deflection pulley 11, anchoring pulley 5 and anchoring device 4 are symmetrically provided as a set; when there are an odd number of sets, the cable 6, anchor 15, deflection pulley 11, anchoring pulley 5 and anchoring device 4 are evenly distributed as a set.

[0036] Working Principle of the Invention: The experimental apparatus of the present invention can be specifically divided into three modules: a water tank module (for studying wave-structure interaction), a mooring test bench module (for studying mooring response), and a soil box test module (for studying anchor-soil interaction). In the water tank module, water is contained in the water tank 1. The wave generator 2 simulates waves under operating sea conditions and interacts with the buoy 8. The wave forces acting on the buoy 8 are transmitted to the mooring cable 6 moored to the buoy 8. In the mooring test bench module, the mooring cable response is measured on the test bench 9, specifically the tension and displacement of the cable marker segment. The real-time mooring cable tension response is captured by the tension sensor 12, and the displacement of the cable marker segment is measured by the laser sensor 13. In the soil box test module, anchor pulley 5 and deflection pulley 11 change direction, allowing test bench 9 to adjust its height via support legs 10. The matching arrangement of track pulley 16 and track 17 allows the test bench to slide on the water tank, thereby adjusting the mooring angle of the anchor cable in soil box 14 to meet the same mooring angle as the water tank model. This ensures that the force applied to cable 6 is transmitted to the anchor in the soil box test module at the same mooring angle as the mooring cable of buoy 8, thus completing the anchor-soil interaction experiment. During the experiment, wave generator 2 generates waves, which act on buoy 8 through water tank 1. The wave force applied to buoy 8 is transmitted to cable 6. Anchor pulley 5 redirects the mooring force, transmitting it to test bench 9. Deflection pulley 11 further redirects the mooring force, transmitting it to anchor 15 in soil box 14, thus achieving coupling between the various components.

[0037] The experimental device of the present invention is a mooring system experimental device coupled with a water tank module, a test bench module and an anchor-soil module. Compared with a single test bench module and a single anchor-soil module, it can provide more realistic wave and water flow loads, thereby better obtaining the dynamic response of the mooring cable and the anchor; compared with a single water tank module, it can take into account and study the floating body displacement response caused by the elongation of the mooring cable and the displacement of the anchor in the soil, and it does not study the response of a single module.

[0038] Seawater can be added to the soil box as needed to simulate marine soil. It should be noted that taut mooring systems are typically used in deep and ultra-deep water conditions, where waves have little effect on the dynamics of marine soil, so there is no need to add wave-generating equipment to the soil box.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An experimental device for a fully coupled taut mooring system, characterized by: The system comprises a water tank, a cable, a floating body, a soil box, and a test bench. The water tank is used to provide a water environment. The soil box and the test bench are sequentially mounted on the water tank. An anchor is provided in the soil box, and a steering pulley is provided on the test bench. A wave-making plate is provided at one end of the water tank, and an anchoring roller skate and an anchoring device are provided at the bottom of the water tank. One end of the floating body is fixedly connected to the anchoring device via a cable, and the other end is sequentially connected to the anchoring roller skate, the steering roller skate, and the anchor via another cable. A wave-breaking platform is provided at the other end of the water tank. Also included is an anchor chain, wherein the cable is connected to the buoy through the anchor chain; The soil box is fixedly arranged above the wave-making plate and fixedly arranged on the upper part of the water tank; The test bench is provided with a laser displacement sensor, and a cable marking segment is provided on the cable segment between the steering pulley and the anchor. The laser displacement sensor is arranged below the cable marking segment and is used to measure the displacement of the cable marking segment. A tension sensor is also provided on the cable segment between the steering pulley and the anchor and is used to collect the tension data of the cable.

2. The experimental device of a fully coupled taut mooring system according to claim 1, characterized in that: Tracks are respectively provided on both sides of the soil box, and track pulleys are provided at the lower part of the test bench, and the track pulleys are matched with the tracks.

3. The experimental device of a fully coupled taut mooring system according to claim 1, characterized in that: The test bench comprises a table top arranged on the upper portion and supporting legs for supporting the table top.

4. The experimental device of a fully coupled taut mooring system according to claim 2, characterized in that: The test bench comprises a table top arranged at the upper portion and support legs for supporting the table top, and track pulleys are arranged at the lower portion of the support legs.

5. The experimental device of a fully coupled taut mooring system according to claim 3 or 4, characterized in that: The supporting legs are lifting legs.

6. The experimental device of a fully coupled taut mooring system according to claim 3 or 4, characterized in that: Both ends of the table are provided with steering pulleys.

7. The experimental device of a fully coupled taut mooring system according to claim 1, characterized in that: The cable, anchor, diverting pulley, anchoring pulley and anchoring device are provided as a complete set, and the experimental device is provided with at least one set.

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