Anti-interference umbilical and method of manufacturing the same

Abstract

The present application relates to the field of ocean engineering equipment, and more particularly to an anti-turbulence umbilical cable and a preparation method thereof, a plurality of groups of shield scale drag reduction structure units are formed on the outer circumferential surface of the umbilical cable body, the plurality of groups of shield scale drag reduction structure units are regularly arranged along the outer circumferential surface of the umbilical cable body to form a fish scale biomimetic structure or a fin-shaped biomimetic structure to cope with the turbulent flow environment in water, effectively reduce the fluid resistance in the turbulent flow environment, reduce the impact of water power disturbance in the state of dragging or being stationary on the umbilical cable body, and avoid the problems of shaking, vibration and deformation caused by large water power disturbance. The umbilical cable of the present application has a round appearance, and the outer diameter is uniform, which overcomes the problems of jamming, winding or wear of the guide vane and the protruding part of the woven capillary fiber in the winch cable arrangement process in the prior art, realizes efficient and smooth winch cable arrangement operation, reduces the complexity of equipment operation and the maintenance frequency, and greatly improves the stability and service life of the umbilical cable in long-term operation.

Description

Technical Field

[0001] This invention relates to the field of marine engineering equipment, and in particular to an anti-turbulence umbilical cable and its preparation method. Background Technology

[0002] With the continuous advancement of deep-sea resource development, umbilical cables are increasingly widely used in marine engineering, covering multiple fields such as underwater robot power and communication, deep-sea exploration equipment, data transmission for marine observation stations, and power transmission. However, umbilical cables are constantly exposed to complex marine environments, facing multiple influences such as fluid turbulence, external tensile and bending stresses, and marine organism attachment. Their transmission efficiency, structural stability, and service life are easily reduced due to performance degradation or external damage, and may even break, seriously affecting the reliability and efficiency of marine equipment.

[0003] Currently, traditional technical methods for addressing the issues of turbulence resistance and structural stability of umbilical cables in complex marine environments mainly include adding rubber guide plates and braiding capillary fibers. Adding rubber guide plates improves the hydrodynamic performance of the cable by attaching rubber guide plates to the surface of the umbilical cable, reducing vibration and additional forces caused by turbulence. Braiding capillary fibers adds braided capillary fibers to the surface of the cable to simulate fluid separation and turbulence resistance characteristics, thereby reducing hydrodynamic fluctuations on the surface of the cable.

[0004] However, these traditional techniques still have many drawbacks. The rubber guide vanes fixed to the umbilical cable, due to their prominent structural design, are prone to causing problems such as cable tray jamming and winch malfunctions during cable winding and winch operation, leading to decreased operational efficiency and potentially damaging equipment. While the braided capillary fiber design can improve resistance to turbulence to some extent, its manufacturing process is complex, and during repeated winch operation, the capillary fibers are subjected to continuous compression and abrasion, making them prone to detachment and functional loss, further affecting the stability of the cable's performance.

[0005] Traditional technologies struggle to effectively address the comprehensive mechanical performance issues of umbilical cables under turbulent and harsh environments, and also fail to meet the engineering requirements that balance high efficiency, durability, and convenience. Therefore, a novel anti-turbulence umbilical cable is urgently needed to overcome the shortcomings of existing technologies. Summary of the Invention

[0006] This invention provides an anti-turbulence umbilical cable and its preparation method, which solves the defect of performance degradation of umbilical cables under turbulence and harsh environment in the prior art.

[0007] The present invention provides an anti-turbulence umbilical cable, comprising a cylindrical umbilical cable body, wherein multiple sets of shield scale drag-reducing structural units are formed on the outer peripheral surface of the umbilical cable body, and the multiple sets of shield scale drag-reducing structural units are arranged regularly along the outer peripheral surface of the umbilical cable body to form a fish scale biomimetic structure or a fin-like biomimetic structure.

[0008] According to the present invention, a plurality of shield scale drag reduction structural units are arranged at intervals along the axial direction and circumferential direction of the umbilical cable body on the outer peripheral surface of the umbilical cable body, and the center points of two adjacent shield scale drag reduction structural units are aligned with each other.

[0009] According to the present invention, a plurality of the shield scale drag reduction structural units are arranged at intervals along the axial direction of the umbilical cable body on the outer peripheral surface of the umbilical cable body to form multiple rows of the shield scale drag reduction structural units, and the umbilical cable body in adjacent rows is arranged alternately in the circumferential direction of the umbilical cable body.

[0010] According to the present invention, an anti-turbulence umbilical cable is provided, wherein the shield scale drag reduction structure unit includes a plurality of parallel grooves, the length of which decreases sequentially from the center outwards.

[0011] According to the present invention, the anti-turbulence umbilical cable has a shield scale drag reduction structure unit that is a geometric protrusion, wherein the geometric protrusion is at least one of a rhombus protrusion, a dot array protrusion, a triangular protrusion, and a hexagonal protrusion.

[0012] According to the present invention, an anti-turbulence umbilical cable further includes an end protection device, which includes a connecting sleeve, multiple protection units, and a buffer material layer. The connecting sleeve is fitted onto the end of the umbilical cable body. The multiple protection units are fitted onto the outer circumferential surface of the connecting sleeve, with a gap between adjacent protection units. The cross-section of each protection unit is fan-shaped. The buffer material layer fills the space between the connecting sleeve and the protection units.

[0013] According to the present invention, an anti-turbulence umbilical cable is provided, wherein the protection unit includes two sector-shaped modules, and semi-circular slots are correspondingly provided on the opposite surfaces of the two sector-shaped modules. The two sector-shaped modules are fitted around the outer circumferential surface of the connecting sleeve and are fixed by fasteners.

[0014] According to the present invention, an anti-turbulence umbilical cable is provided, wherein the cable body comprises, from the outside to the inside, an outer sheath, a non-metallic fiber load-bearing layer, an inner sheath, a shielding layer, and within the shielding layer, a plurality of control signal transmission core cables, a plurality of power transmission core cables, a plurality of communication data transmission core cables, a drain wire, and a watertight filling material; the shield scale drag-reducing structure unit is formed on the outer peripheral surface of the outer sheath; the non-metallic fiber load-bearing layer is located inside the outer sheath; the inner sheath is located inside the non-metallic fiber load-bearing layer; the shielding layer is located inside the inner sheath; the control signal transmission core cable ... are provided; the shield scale drag-reducing structure unit is formed on the outer peripheral surface of the outer sheath; the non-metallic fiber load-bearing layer is located inside the outer sheath; the shielding layer is located inside the inner sheath; the control signal transmission core cable, a plurality of power transmission core cables, a plurality of communication data transmission core cables, a drain wire, and a watertight filling material are provided; the shield scale drag-reducing structure unit is formed on the outer peripheral surface of the outer sheath; the non-metallic fiber load-bearing layer is located inside the outer sheath; the shielding layer is located inside the inner sheath; the shielding layer is located inside the outer peripheral surface of the outer sheath; the shielding layer is located inside the outer peripheral surface of the outer sheath The signal transmission core cable is located within the shielding layer, and multiple control signal transmission core cables are evenly distributed circumferentially along the center of the umbilical cable body; the power transmission core cable is located within the shielding layer, and multiple power transmission core cables are evenly distributed circumferentially along the center of the umbilical cable body; the communication data transmission core cable is located within the shielding layer, and multiple communication data transmission core cables are evenly distributed circumferentially along the center of the umbilical cable body; the drain line is located within the shielding layer and is electrically connected to the shielding layer; the watertight filling material is filled within the shielding layer.

[0015] According to the present invention, the outer sheath and the inner sheath are respectively made of one of the following materials: thermoplastic elastomer, vulcanized rubber, polyurethane, low-density polyethylene, medium-density polyethylene, and high-density polyethylene.

[0016] The non-metallic fiber load-bearing layer comprises multiple layers of non-metallic fibers that are spirally wound and twisted together, with adjacent layers of non-metallic fibers twisted in opposite directions.

[0017] The shielding layer is made of one of the following materials: copper-plastic composite tape, aluminum-plastic composite tape, or multi-strand copper wire braid; the drain wire includes a conductor and a semi-conductive sheath around the conductor.

[0018] Both the control signal transmission core cable and the power transmission core cable include a conductor and an insulation layer around the conductor; the communication data transmission core cable is internally provided with tight-buffered optical fiber, loose-buffered optical fiber and stainless steel optical fiber, and the spaces between the tight-buffered optical fiber, the loose-buffered optical fiber and the stainless steel optical fiber are filled with grease and water-blocking adhesive.

[0019] The watertight filler material is one of the following: polyurethane adhesive, silicone rubber, polysulfide rubber, and hot melt adhesive.

[0020] Another aspect of the present invention provides a method for preparing an anti-turbulence umbilical cable, applicable to the preparation of any one of the anti-turbulence umbilical cables described above. The method for preparing the anti-turbulence umbilical cable includes: setting multiple control signal transmission core cables, multiple power transmission core cables, multiple communication data transmission core cables, and a drain line within a shielding layer; electrically connecting the drain line to the shielding layer and filling the shielding layer with a watertight filling material; sequentially fitting an inner sheath, a non-metallic fiber load-bearing layer, and an outer sheath around the outer periphery of the shielding layer from the inside out; forming multiple sets of shield scale drag-reducing structural units on the outer periphery of the outer sheath using a laser etching process or a die-cutting etching process to complete the preparation of the umbilical cable body; and fitting an end protection device at the end of the prepared umbilical cable body.

[0021] The anti-turbulence umbilical cable provided by this invention features a shield-scale drag-reducing structural unit designed on the outer circumferential surface of the umbilical cable body, forming a fish-scale biomimetic structure or a fin-like biomimetic structure. Based on the fish-scale biomimetic structure or the fin-like biomimetic structure, it effectively reduces fluid resistance in turbulent environments, reduces the impact of hydrodynamic disturbances on the umbilical cable body under towing or stationary conditions, and avoids swaying, vibration, and deformation problems caused by large hydrodynamic disturbances. This significantly improves the stability of the umbilical cable during long-term operation. This invention significantly improves the stability and service life of the umbilical cable by reducing fluid resistance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the anti-turbulence umbilical cable provided by the present invention.

[0024] Figure 2 This is a schematic diagram of the external structure of the umbilical cable body provided by the present invention.

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the umbilical cable body provided by the present invention.

[0026] Reference numerals: 1. Umbilical cable body; 11. Outer sheath; 12. Non-metallic fiber load-bearing layer; 13. Inner sheath; 14. Shielding layer; 15. Control signal transmission core cable; 16. Power transmission core cable; 17. Communication data transmission core cable; 18. Drainage line; 19. Watertight filling material; 2. Shield scale drag reduction structure unit; 3. End protection device; 31. Connecting sleeve; 32. Protection unit; 321. Sector module; 322. Fastener. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0030] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The following is combined Figures 1 to 3 The present invention describes the anti-turbulence umbilical cable and its preparation method.

[0033] One embodiment of the present invention provides an anti-turbulence umbilical cable, see [link to previous document]. Figure 1 As shown, the anti-turbulence umbilical cable includes a cylindrical umbilical cable body 1. Multiple sets of shield scale drag reduction structural units 2 are formed on the outer peripheral surface of the umbilical cable body 1. The multiple sets of shield scale drag reduction structural units 2 are arranged regularly along the outer peripheral surface of the umbilical cable body 1 to form a fish scale biomimetic structure or a fin-like biomimetic structure.

[0034] It is understood that the anti-turbulence umbilical cable provided in this embodiment features a shield-scale drag-reducing structural unit 2 designed on the outer circumferential surface of the umbilical cable body 1, forming a fish-scale biomimetic structure or a fin-like biomimetic structure. Based on this fish-scale or fin-like biomimetic structure, it effectively reduces fluid resistance in turbulent environments, minimizes the impact of hydrodynamic disturbances on the umbilical cable body 1 under towing or stationary conditions, and avoids swaying, vibration, and deformation problems caused by large hydrodynamic disturbances, significantly improving the stability of the umbilical cable during long-term operation. This embodiment significantly improves the stability and service life of the umbilical cable by reducing fluid resistance.

[0035] In some embodiments of the anti-turbulence umbilical cable of the present invention, multiple sets of shield scale drag-reducing structural units 2 are arranged at intervals along the axial and circumferential directions of the umbilical cable body 1 on the outer peripheral surface of the cable body 1. The center points of two adjacent shield scale drag-reducing structural units 2 are aligned with each other. It can be understood that this embodiment provides a way of aligning the shield scale drag-reducing structural units 2. All shield scale drag-reducing structural units 2 are neatly arranged in the transverse and longitudinal directions, with their center points aligned with each other, forming a regular geometric distribution. This arrangement scheme is suitable for uniform flow field environments. The transverse center spacing and longitudinal center spacing of the shield scale drag-reducing structural units 2 are both 3mm, which can ensure the uniformity of microstructure distribution and form a continuous drag-reducing area, enhancing the overall protection and drag reduction effect.

[0036] In some other embodiments of the anti-turbulence umbilical cable of the present invention, multiple sets of shield scale drag reduction structural units 2 are arranged at intervals along the axial direction of the umbilical cable body 1 on the outer peripheral surface of the umbilical cable body 1 to form multiple rows of shield scale drag reduction structural units 2. The umbilical cable bodies 1 of adjacent rows are staggered in the circumferential direction of the umbilical cable body 1. It can be understood that this embodiment provides a way of staggering the shield scale drag reduction structural units 2. The center points of the shield scale drag reduction structural units 2 of adjacent rows are staggered by half a unit size to form a staggered distribution. This arrangement can more effectively disperse the turbulent region and optimize the water flow distribution, and is suitable for more complex fluid conditions.

[0037] In some embodiments of the anti-turbulence umbilical cable of the present invention, see [reference needed]. Figure 2 As shown, the shield scale drag reduction structure unit 2 includes multiple parallel grooves, the length of which decreases sequentially from the center outwards. It can be understood that a microstructure surface layer (shield scale drag reduction structure unit 2) is designed on the outer circumferential surface of the umbilical cable body 1. The shield scale drag reduction structure unit 2 is a biomimetic design, exhibiting a biomimetic layout resembling microscopic fish scales or fins on the outer circumferential surface of the umbilical cable body 1. In this embodiment, the shield scale drag reduction structure unit 2 includes a regularly arranged combination of "grooves," the direction of which is parallel to the water flow direction, and the shape resembling microscopic fish scales or fins. These microstructures, by optimizing the fluid boundary layer characteristics, can significantly reduce turbulence and frictional resistance.

[0038] In some specific examples, the shield scale drag reduction structure unit 2 includes five parallel grooves with a width of 0.1~0.3mm, a depth of 0.3~0.5mm, a spacing of 0.1~0.3mm between two adjacent grooves, a length of 2mm for the central groove, a length of 0.5mm for the two outermost grooves, and a length of 1mm for the remaining two grooves.

[0039] Understandably, the shield-scale drag reduction structural unit 2 in this example includes five parallel grooves (one in the center and two on each side). The groove length gradient is 2.0mm (center) → 1.0mm (middle) → 0.5mm (edge). The groove width tolerance is 0.20±0.02mm, the groove depth control is 0.40±0.03mm, and the groove spacing specification is 0.2mm (groove edge spacing). The shield-scale drag reduction structural unit 2 in this example is biomimetic to the shield-scale structure of a great white shark. The length gradient corresponds to the velocity gradient distribution, and the groove depth-to-width ratio (2:1) optimizes vortex control. Its boundary layer regulation method is as follows: the long groove in the center guides the mainstream, generating a stable directional vortex, while the short grooves on both sides induce transverse vortices to interfere with turbulence and disrupt secondary flow. Through a precise gradient groove architecture, while maintaining manufacturing feasibility, a comprehensive fluid performance improvement of more than 50% compared to traditional structures is achieved.

[0040] It should be noted that the above structural parameters (including groove length, groove width, groove depth, groove unit spacing, etc.) are not limited to specific values ​​and can be reasonably adjusted according to actual processing capabilities, material properties, and fluid dynamics optimization requirements.

[0041] The design of the shield scale drag reduction structural unit 2 is not limited to a "groove" (strip) shape. In some embodiments of the anti-turbulence umbilical cable of the present invention, the shield scale drag reduction structural unit 2 is a geometric protrusion, which is at least one of a rhombus protrusion, a dot array protrusion, a triangular protrusion, and a hexagonal protrusion. By designing the shield scale drag reduction structural unit 2 into geometric shapes such as rhombus protrusions, dot arrays, triangular protrusions, and hexagonal protrusions, these diverse structural forms can all achieve unique functional characteristics similar to sharkskin.

[0042] Based on the structure of the anti-turbulence umbilical cable in the above embodiments or examples, in some embodiments of the anti-turbulence umbilical cable of the present invention, the anti-turbulence umbilical cable further includes an end protection device 3, see again. Figure 1 As shown, the end protection device 3 includes a connecting sleeve 31, multiple protection units 32, and a buffer material layer. The connecting sleeve 31 is fitted onto the end of the umbilical cable body 1. Multiple protection units 32 are fitted onto the outer circumferential surface of the connecting sleeve 31, with a gap between adjacent protection units 32. The cross-section of the protection unit 32 is fan-shaped. The buffer material layer is filled between the connecting sleeve 31 and the protection unit 32. The protection unit 32 is filled with silicone gaskets or other buffer materials with excellent pressure resistance and flexibility, effectively preventing damage to the umbilical cable caused by external pressure or sharp impact.

[0043] Understandably, this embodiment employs an end protection device 3 at the end of the umbilical cable body 1 to reduce the risk of fluid disturbance, stress concentration, and fatigue damage in the end area, thereby improving the reliability of the cable end and solving the technical problem of easy breakage at the end due to frequent stress or turbulent environment, thus extending the overall service life of the umbilical cable. The fan-shaped cross-section protection unit 32 forms a teardrop-shaped anti-turbulence structure. Utilizing fluid dynamics optimization design, its shape conforms to the streamline principle, effectively reducing water flow disturbance at the end, reducing the impact force of local high flow velocity on the end, and reducing stress concentration effect. This significantly reduces fluid disturbance and stress concentration in the end area, effectively avoiding end fatigue damage and breakage caused by turbulence or frequent stress. This improvement significantly extends the service life of the cable end and further enhances the reliability of the entire umbilical cable in engineering operations.

[0044] In some specific examples, the protection unit 32 includes two sector-shaped modules 321. Semi-circular slots are correspondingly provided on the opposite surfaces of the two sector-shaped modules 321. The two sector-shaped modules 321 are fitted around the outer periphery of the connecting sleeve 31 and secured by fasteners 322. It is understood that the protection unit 32 in this example adopts a modular design and is detachable. Each protection unit 32 consists of two sector-shaped modules 321 connected by fasteners such as bolts or clips, and is firmly connected to the end of the umbilical cable body 1 through fastener fixing. The modular design supports flexible parts replacement and reduces maintenance costs.

[0045] The end protection device 3 mainly consists of three or more protection units 32. Each protection unit 32 is securely integrated into a stable whole by two detachable modular fan-shaped modules 321 fasteners during use, ensuring sufficient strength and stability for the protection unit 32 during underwater operations. Multiple protection units are secured by steps 31, with a certain gap between each unit. Through a reasonable structural design, bending within a certain angle range is achieved, effectively ensuring the minimum bending radius of the umbilical cable and preventing damage to the cable structure from excessive bending.

[0046] In some embodiments of the anti-turbulence umbilical cable of the present invention, see Figure 3 As shown, the umbilical cable body 1, from the outside in, includes an outer sheath 11, a non-metallic fiber load-bearing layer 12, an inner sheath 13, a shielding layer 14, and multiple control signal transmission core cables 15, multiple power transmission core cables 16, multiple communication data transmission core cables 17, a drain wire 18, and a watertight filling material 19 within the shielding layer 14. A shield scale drag-reducing structural unit 2 is formed on the outer circumference of the outer sheath 11; the non-metallic fiber load-bearing layer 12 is located inside the outer sheath 11; the inner sheath 13 is located inside the non-metallic fiber load-bearing layer 12; and the shielding layer 14 is located inside the inner sheath 13. The control signal transmission core cables 15, multiple power transmission core cables 16, multiple communication data transmission core cables 17, a drain wire 18, and a watertight filling material 19 are also present. Signal transmission core cable 15 is located inside shielding layer 14, and multiple control signal transmission core cables 15 are evenly distributed circumferentially along the center of umbilical cable body 1; power transmission core cable 16 is located inside shielding layer 14, and multiple power transmission core cables 16 are evenly distributed circumferentially along the center of umbilical cable body 1; communication data transmission core cable 17 is located inside shielding layer 14, and multiple communication data transmission core cables 17 are evenly distributed circumferentially along the center of umbilical cable body 1; drain line 18 is located inside shielding layer 14 and is electrically connected to shielding layer 14; watertight filling material 19 is filled inside shielding layer 14.

[0047] Specifically, the outer sheath 11 and the inner sheath 13 are made of thermoplastic elastomer, vulcanized rubber, polyurethane, low-density polyethylene, medium-density polyethylene, high-density polyethylene, or other equivalent materials, respectively. The inner sheath 13 and the shielding layer 14 are wrapped around the control signal transmission core cable 15, the power transmission core cable 16, and the communication data transmission core cable 17, serving as supports and buffers.

[0048] The non-metallic fiber load-bearing layer 12 comprises multiple layers of non-metallic fibers spirally wound and twisted together, with adjacent layers twisted in opposite directions. Specifically, the non-metallic fiber load-bearing layer 12 uses various high-strength synthetic fibers such as aramid, high-modulus polyethylene, carbon fiber, glass fiber, and polyester fiber. It adopts a torque balance design, spirally wound and twisted together, with adjacent layers twisted in opposite directions. The twisting angle of the non-metallic fibers is controlled within a smaller range than that of the power transmission core cable 16 and the communication data transmission core cable 17, ensuring that the non-metallic fiber load-bearing layer 12 is uniformly stressed under tension, while preventing the umbilical cable from twisting under tension.

[0049] The shielding layer 14 is made of copper-plastic composite tape, aluminum-plastic composite tape, multi-strand copper wire braid, or other equivalent materials. The shielding layer 14 wraps around the control signal transmission core cable 15, power transmission core cable 16, and communication data transmission core cable 17, forming an electromagnetic shielding effect. The guide wire 18 maintains good electrical contact with the shielding layer 14, forming a potential balance. In the complex environment of the deep sea, it can effectively suppress electromagnetic interference. The guide wire 18 includes a conductor and a semi-conductive sheath around the conductor. The conductor is made of copper, aluminum, or other equivalent materials, and the semi-conductive sheath ensures electrical contact with the shielding layer 14.

[0050] Both the control signal transmission core cable 15 and the power transmission core cable 16 include a conductor and an insulation layer around the conductor. The conductor is made of copper, aluminum, or other equivalent materials, and the insulation layer is made of polyethylene, polypropylene, polyvinyl chloride, or other equivalent materials. Multiple control signal transmission core cables 15 and multiple power transmission core cables 16 are evenly distributed circumferentially along the center of the umbilical cable body 1 to ensure that the optical cable is round and free of serpentine shapes. The communication data transmission core cable 17 contains tightly bundled optical fibers, loosely bundled optical fibers, and stainless steel optical fibers. The spaces between the tightly bundled optical fibers, loosely bundled optical fibers, and stainless steel optical fibers are filled with grease and water-blocking adhesive. Each optical fiber in the communication data transmission core cable 17 is evenly distributed circumferentially along the center of the umbilical cable body 1, and water-blocking adhesive is filled in the stranding gaps to fill the cable gaps, making the cable structure compact and round.

[0051] The watertight filler material 19 is made of polyurethane glue, silicone rubber, polysulfide rubber and hot melt glue or other equivalent materials. The watertight filler material 19 is filled in the cable core to block water and oil. At the same time, filling the cable core with watertight filler material 19 can maintain the compactness and roundness of the cable core, improve the cable core's resistance to lateral pressure, and reduce the radial shrinkage of the cable core under high water pressure.

[0052] Through the arrangement of layers and materials used within the umbilical cable body 1, the anti-turbulence umbilical cable structure is made round and uniform in outer diameter, successfully overcoming the problems of jamming, tangling, or wear caused by protruding parts of traditional guide vanes or braided capillary structures during winch cable laying. This design significantly improves the smoothness of winch cable laying operations, effectively reduces the complexity of the cable laying process and human intervention, and lowers equipment maintenance frequency and operating costs.

[0053] In another aspect, the present invention provides a method for preparing an anti-turbulence umbilical cable, which is applicable to preparing the anti-turbulence umbilical cable in any of the above embodiments or examples. In some specific embodiments, the method for preparing the anti-turbulence umbilical cable includes the following steps S1 to S5.

[0054] S1. Multiple control signal transmission core cables 15, multiple power transmission core cables 16, multiple communication data transmission core cables 17, and a drain line 18 are installed inside the shielding layer 14. S2. Electrically connect the drain line 18 to the shielding layer 14, and fill the shielding layer 14 with watertight filling material 19; S3. The inner sheath 13, the non-metallic fiber load-bearing layer 12 and the outer sheath 11 are sequentially installed from the inside to the outside around the shielding layer 14. S4. Multiple shield scale drag reduction structural units 2 are formed on the outer peripheral surface of the outer sheath 11 by laser etching or die etching to complete the preparation of the umbilical cable body 1. S5. Install end protection device 3 on the end of the prepared umbilical cable body 1.

[0055] In step S4, multiple sets of shield scale drag-reducing structural units 2 can be formed using laser etching. A high-precision laser device is used to scan and etch the outer periphery of the outer sheath 11. Based on the designed sharkskin-like texture shape, a micro-ridge-like unit structure is formed using laser engraving. Laser parameters (power, pulse frequency, etc.) are adjustable to ensure that the biomimetic texture depth and effect meet hydrodynamic requirements, while maintaining the strength of the umbilical cable surface material. Similarly, multiple sets of shield scale drag-reducing structural units 2 can be formed using a molding etching process. A mold or roller with a sharkskin-like microstructure is prepared. The mold surface is processed with regularly arranged biomimetic "groove" textures. The mold or roller is applied to the surface of the outer sheath 11 through hot or cold pressing to precisely transfer the sharkskin-like texture to the umbilical cable surface.

[0056] In step S5, the specific installation steps and operational details are as follows: 1) Prepare pre-processed fan-shaped modules 321. Each module has an arc design, and after assembly, they form a complete teardrop-shaped protection unit 32 (with a smaller upper part and a larger lower part in the teardrop shape). Fill the inner side of the two fan-shaped modules 321 with a buffer material layer, such as silicone gaskets or other highly flexible and pressure-resistant materials, to ensure effective shock absorption and impact absorption capabilities after installation. Symmetrically surround the two fan-shaped modules 321 from the outer periphery of the umbilical cable body 1, so that the bottom surface of the module smoothly fits against the surface of the connecting sleeve 31. 2) Fastening and fixing the protection unit 32: Pass the fasteners 322 (such as bolts, clips, or other mechanical fasteners) through the preset connection holes on the fan-shaped modules 321 to lock the two fan-shaped modules 321 into a complete protection unit 32. Tighten the bolts or adjust the clips to ensure that there is no looseness between the modules, and that the protection unit 32 tightly covers the outer periphery of the connecting sleeve 31, forming a stable anti-turbulence structure. 3) Multiple protection units 32 splicing: As required, three or more protection units 32 are installed axially around the outer periphery of the umbilical cable body 1. Each protection unit 32 is secured by a step on the connecting sleeve 31, while a certain gap is left between each protection unit 32. These gaps, through a reasonable distribution design, allow the end protection device 3 to bend within a certain range to ensure the minimum bending radius requirement of the umbilical cable. Check the angle and position of each protection unit 32 to ensure that its overall structure is rounded and conforms to the streamlined design.

[0057] The anti-turbulence umbilical cable fabrication method provided by this invention produces an anti-turbulence umbilical cable. By designing a biomimetic shark skin structure in the outer sheath 11, it significantly reduces the fluid resistance of the umbilical cable in turbulent environments and reduces the impact of hydrodynamic disturbances on the cable body, thereby improving the stability of the umbilical cable and solving problems such as increased energy consumption, decreased strength, and structural fatigue caused by high hydrodynamic resistance in marine fluid environments. The fabricated umbilical cable body 1 has a round appearance and a uniform outer diameter, overcoming the problems of jamming, tangling, or wear of the guide vanes and braided capillary protrusions during winch cable laying in existing technologies. This enables efficient and smooth winch cable laying operations, reducing the complexity of equipment operation and maintenance frequency. An end protection device 3 is installed at the end of the umbilical cable body 1 to reduce the risk of fluid disturbance, stress concentration, and fatigue damage in the end area, improving the reliability of the cable end and solving the technical problem of easy breakage at the end due to frequent stress or turbulent environment, thus extending the overall service life of the umbilical cable.

[0058] By combining the above biomimetic structural design of the umbilical cable surface (shield scale drag reduction structural unit 2) with the fan-shaped end protection device 3, a solution for deep-sea operations is provided that takes into account the resistance to turbulence, high strength and ease of operation. This overcomes the shortcomings of existing technologies, such as inconvenient operation and maintenance and short lifespan, and improves the applicability and reliability in the field of deep-sea engineering.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-turbulence umbilical cable, characterized in that, It includes a cylindrical umbilical cable body (1), and multiple sets of shield scale drag reduction structural units (2) are formed on the outer peripheral surface of the umbilical cable body (1). The multiple sets of shield scale drag reduction structural units (2) are arranged regularly along the outer peripheral surface of the umbilical cable body (1) to form a fish scale biomimetic structure or a fin-like biomimetic structure. The shield scale drag reduction structure unit (2) includes multiple parallel grooves, or the shield scale drag reduction structure unit (2) is a geometric protrusion; The anti-turbulence umbilical cable also includes an end protection device (3), which includes a connecting sleeve (31), multiple protection units (32), and a buffer material layer. The connecting sleeve (31) is fitted onto the end of the umbilical cable body (1). The protection unit (32) is fitted onto the outer circumferential surface of the connecting sleeve (31), with a gap between two adjacent protection units (32). The cross-section of the protection unit (32) is fan-shaped. The buffer material layer is filled between the connecting sleeve (31) and the protection unit (32).

2. The anti-turbulence umbilical cable according to claim 1, characterized in that, Multiple sets of the shield scale drag reduction structure units (2) are arranged at intervals along the axial direction and circumferential direction of the umbilical cable body (1) on the outer peripheral surface of the umbilical cable body (1), and the center points of two adjacent shield scale drag reduction structure units (2) are aligned with each other. or, Multiple sets of the shield scale drag reduction structural units (2) are arranged at intervals along the axial direction of the umbilical cable body (1) on the outer peripheral surface of the umbilical cable body (1) to form multiple rows of the shield scale drag reduction structural units (2), and the umbilical cable bodies (1) of adjacent rows are arranged alternately in the circumferential direction of the umbilical cable body (1).

3. The anti-turbulence umbilical cable according to claim 1, characterized in that, When the shield scale drag reduction structure unit (2) includes multiple parallel grooves, the length of the multiple parallel grooves decreases sequentially from the center outwards.

4. The anti-turbulence umbilical cable according to claim 1, characterized in that, When the shield scale drag reduction structure unit (2) is a geometric protrusion, the geometric protrusion is at least one of a rhombus protrusion, a dot array protrusion, a triangular protrusion, and a hexagonal protrusion.

5. The anti-turbulence umbilical cable according to claim 1, characterized in that, The protection unit (32) includes two fan-shaped modules (321). Semi-circular holes and slots are provided on the opposite surfaces of the two fan-shaped modules (321). The two fan-shaped modules (321) are fitted around the outer circumference of the connecting sleeve (31) and fixed by fasteners (322).

6. The anti-turbulence umbilical cable according to any one of claims 1 to 5, characterized in that, The umbilical cable body (1) comprises, from the outside in, the following components: Outer protective layer (11), the shield scale drag reduction structure unit (2) is formed on the outer peripheral surface of the outer protective layer (11). A non-metallic fiber load-bearing layer (12) is located inside the outer protective layer (11); The inner protective layer (13) is located inside the non-metallic fiber load-bearing layer (12); The shielding layer (14) is located inside the inner protective layer (13); Multiple control signal transmission core cables (15) are located inside the shielding layer (14), and the multiple control signal transmission core cables (15) are evenly distributed circumferentially along the center of the umbilical cable body (1). Multiple power transmission core cables (16) are located inside the shielding layer (14), and the multiple power transmission core cables (16) are evenly distributed circumferentially along the center of the umbilical cable body (1). Multiple communication data transmission core cables (17) are located inside the shielding layer (14), and the multiple communication data transmission core cables (17) are evenly distributed circumferentially along the center of the umbilical cable body (1); The drain line (18) is located inside the shielding layer (14) and is electrically connected to the shielding layer (14); Watertight filling material (19) is filled into the shielding layer (14).

7. The anti-turbulence umbilical cable according to claim 6, characterized in that, The outer protective layer (11) and the inner protective layer (13) are respectively made of one of the following materials: thermoplastic elastomer, vulcanized rubber, polyurethane, low-density polyethylene, medium-density polyethylene, and high-density polyethylene; The non-metallic fiber load-bearing layer (12) includes multiple layers of non-metallic fibers that are spirally wound and twisted together, with the twisting directions of adjacent layers of non-metallic fibers being opposite. The shielding layer (14) is made of one of the following materials: copper-plastic composite tape, aluminum-plastic composite tape, or multi-strand copper wire braid; the drain line (18) includes a conductor and a semi-conductive sheath around the conductor. Both the control signal transmission core cable (15) and the power transmission core cable (16) include a conductor and an insulation layer around the conductor; the communication data transmission core cable (17) is internally provided with a tight-packed optical fiber, a loose-tube optical fiber and a stainless steel optical fiber, and the space between the tight-packed optical fiber, the loose-tube optical fiber and the stainless steel optical fiber is filled with grease and water-blocking adhesive. The watertight filler material (19) is one of polyurethane adhesive, silicone rubber, polysulfide rubber and hot melt adhesive.

8. A method for preparing an anti-turbulence umbilical cable, characterized in that, The method for preparing the anti-turbulence umbilical cable according to any one of claims 1 to 7 comprises: Multiple control signal transmission core cables (15), multiple power transmission core cables (16), multiple communication data transmission core cables (17), and a drain line (18) are installed inside the shielding layer (14). Electrically connect the drain line (18) to the shielding layer (14) and fill the shielding layer (14) with watertight filling material (19). The inner protective layer (13), the non-metallic fiber load-bearing layer (12) and the outer protective layer (11) are sequentially fitted from the inside to the outside of the shielding layer (14). Multiple shield scale drag reduction structural units (2) are formed on the outer peripheral surface of the outer sheath (11) by laser etching or die etching process to complete the preparation of the umbilical cable body (1); An end protection device (3) is fitted onto the end of the prepared umbilical cable body (1).

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