Anti-turbulence umbilical cable and preparation method thereof

Abstract

The invention relates to the field of ocean engineering equipment, in particular to an anti-turbulent-flow umbilical cable and a preparation method thereof.Multiple sets of shield scale anti-drag structure units are formed on the outer peripheral face of an umbilical cable body and are regularly arranged along the outer peripheral face of the umbilical cable body; a fish scale bionic structure or a fin-shaped bionic structure is formed to cope with a turbulent flow environment in water, the fluid resistance in the turbulent flow environment is effectively reduced, the impact of hydrodynamic disturbance on the umbilical cable body in a dragging or static state is reduced, and the problems of shaking, vibration and deformation caused by large hydrodynamic disturbance are avoided. The umbilical cable is round in appearance and uniform and consistent in outer diameter, the problem that in the prior art, protruding parts of flow deflectors and woven capillary fibers are prone to clamping stagnation or winding or abrasion in the winch cable arrangement process is solved, efficient and smooth winch cable arrangement operation is achieved, the equipment operation complexity and maintenance frequency are reduced, and the working efficiency is improved. And the stability and the service life of the umbilical cable in long-term operation are greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering equipment, and in particular to an anti-disturbance umbilical cable and a preparation method thereof. Background Art

[0002] With the continuous advancement of deep-sea resource development, umbilical cables are increasingly being used in marine engineering, encompassing a wide range of fields, including underwater robot power and communication, deep-sea exploration equipment, data transmission at ocean observatories, and power transmission. However, umbilical cables are exposed to complex marine environments for long periods of time, facing multiple influences such as fluid turbulence, external tensile and bending stresses, and marine biofouling. Their transmission efficiency, structural stability, and service life are susceptible to significant degradation due to performance degradation or external damage, and may even break, seriously impacting the reliability and efficiency of marine equipment.

[0003] At present, in order to solve the problems of anti-turbulence and structural stability of umbilical cables in complex marine environments, traditional technical means mainly include installing rubber guide plates and braided capillary fibers. Among them, the installation of rubber guide plates is to improve the fluid dynamics performance of the cable body and reduce the vibration and additional force caused by turbulence by adding rubber guide plates to the surface of the umbilical cable; the braided capillary fibers are to add braided capillary fibers to the surface of the cable body to simulate fluid separation and anti-turbulence characteristics, thereby reducing the hydrodynamic fluctuations on the cable body surface.

[0004] However, these traditional technologies still have numerous drawbacks. The protruding rubber deflector fixed to the umbilical cable can easily cause the cable plate to become stuck and the winch to become sluggish during cable winding and winch deployment, resulting in reduced efficiency and even equipment damage. While the braided capillary fiber design can improve turbulence resistance to a certain extent, its manufacturing process is complex. Furthermore, during the repeated winch deployment and retraction, the capillary fibers are constantly squeezed and worn, easily falling off, causing loss of function and further compromising the stability of the cable's performance.

[0005] Traditional technologies struggle to effectively address the comprehensive mechanical performance issues of umbilical cables exposed to turbulent flow and harsh environments, nor can they meet the engineering requirements for high efficiency, durability, and convenience. Therefore, a new type of turbulence-resistant umbilical cable is urgently needed to overcome the shortcomings of existing technologies. Summary of the Invention

[0006] The present invention provides an anti-turbulence umbilical cable and a preparation method thereof, which are used to solve the defect in the prior art that the performance of the umbilical cable is degraded under the action of turbulence and harsh environment.

[0007] On the one hand, the present invention provides an anti-turbine umbilical cable, including a cylindrical umbilical cable body, on the outer peripheral surface of which a plurality of groups of shield-scale drag reduction structural units are formed. The plurality of groups of shield-scale drag reduction structural units are regularly arranged along the outer peripheral surface of the umbilical cable body to form a fish-scale bionic structure or a fin-shaped bionic structure.

[0008] According to an anti-turbulence umbilical cable provided by the present invention, a plurality of groups of the shield-scale drag reduction structural units are arranged on the outer peripheral surface of the umbilical cable body at intervals and in alignment along the axial direction and the circumferential direction 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 an anti-turbulence umbilical cable provided by the present invention, a plurality of groups of the shield-scale drag reduction structural units are arranged at intervals and in alignment along the axial direction of the umbilical cable body on the outer peripheral surface of the umbilical cable body to form a plurality of rows of the shield-scale drag reduction structural units, and the umbilical cable bodies of two adjacent rows are staggered in the circumferential direction of the umbilical cable body.

[0010] According to an anti-turbation umbilical cable provided by the present invention, the shield-scale drag reduction structural unit includes a plurality of parallel grooves, and the lengths of the plurality of parallel grooves decrease sequentially from the center to the outside.

[0011] According to an anti-turbine umbilical cable provided by the present invention, the shield scale drag reduction structural unit is a geometric protrusion, and the geometric protrusion is at least one of a diamond protrusion, a dot array protrusion, a triangular protrusion, and a hexagonal protrusion.

[0012] According to an anti-turbine umbilical cable provided by the present invention, the anti-turbine umbilical cable also includes an end protection device, the end protection device includes a connecting sleeve, a plurality of protection units and a buffer material layer, the connecting sleeve is sleeved on the end of the umbilical cable body; the plurality of protection units are sleeved on the outer peripheral surface of the connecting sleeve, and a gap is left between two adjacent protection units, and the cross-section of the protection unit is fan-shaped; the buffer material layer is filled between the connecting sleeve and the protection unit.

[0013] According to an anti-turbine umbilical cable provided by the present invention, the protection unit includes two fan-shaped modules, and semicircular holes are correspondingly provided on the opposite surfaces of the two fan-shaped modules. The two fan-shaped modules are surrounded and sleeved on the outer peripheral surface of the connecting sleeve and are penetrated and fixed by fasteners.

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

[0015] According to the anti-turbulence umbilical cable provided by the present invention, the outer sheath and the inner sheath are respectively made of a material selected from the group consisting of thermoplastic elastomer, vulcanized rubber, polyurethane, low-density polyethylene, medium-density polyethylene, and high-density polyethylene.

[0016] The non-metallic fiber bearing layer includes multiple layers of non-metallic fibers twisted and wound in a spiral manner, and the twisting directions of the non-metallic fibers in two adjacent layers are opposite.

[0017] The shielding layer is made of a material selected from the group consisting of copper-plastic composite tape, aluminum-plastic composite tape, and multi-strand copper wire braiding; the drain wire comprises a conductor and a semi-conductive sheath around the conductor.

[0018] The control signal transmission core cable and the power transmission core cable both include a conductor and an insulating layer around the conductor; the communication data transmission core cable is internally provided with a tight-buffered optical fiber, a loose-tube optical fiber and a stainless steel optical fiber, and the space between the tight-buffered optical fiber, the loose-tube optical fiber and the stainless steel optical fiber is filled with grease and water-blocking glue.

[0019] The watertight filling material is one of polyurethane glue, silicone rubber, polysulfide rubber and hot melt glue.

[0020] On the other hand, the present invention provides a method for preparing an anti-disturbance umbilical cable, which is suitable for preparing any of the above-mentioned anti-disturbance umbilical cables, and the method for preparing the anti-disturbance umbilical cable includes: arranging multiple control signal transmission core cables, multiple power transmission core cables, multiple communication data transmission core cables, and drainage wires in the shielding layer; electrically connecting the drainage wires to the shielding layer, and filling the shielding layer with watertight filling material; sequentially installing an inner protective layer, a non-metallic fiber bearing layer and an outer protective layer on the periphery of the shielding layer from the inside to the outside; forming multiple groups of shield scale drag reduction structural units on the outer peripheral surface of the outer protective layer by a laser etching process or a die etching process to complete the preparation of the umbilical cable body; and installing an end protection device on the end of the prepared umbilical cable body.

[0021] The anti-disturbance umbilical cable provided by the present invention is designed with shield-scale drag reduction structural units on the outer peripheral surface of the umbilical cable body to form a fish-scale bionic structure or a fin-like bionic structure. The fish-scale bionic structure or the fin-like bionic structure is used to cope with the turbulent environment in the water, effectively reducing the fluid resistance in the turbulent environment, reducing the impact of hydrodynamic disturbances on the umbilical cable body in towing or static states, avoiding shaking, vibration and deformation problems caused by large hydrodynamic disturbances, and greatly improving the stability of the umbilical cable in long-term operation. The present invention significantly improves the stability and service life of the umbilical cable by reducing fluid resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

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

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

[0026] Figure numerals: 1. umbilical cable body; 11. Outer sheath; 12. Non-metallic fiber 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 structural unit; 3. End protection device; 31. Connecting sleeve; 32. Protection unit; 321. Fan-shaped body module; 322. Fastener. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and 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, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0032] The following combination Figures 1 to 3 The present invention describes an anti-disturbance umbilical cable and a preparation method thereof.

[0033] One embodiment of the present invention provides an anti-disturbance umbilical cable, see Figure 1 As shown, the anti-turbine umbilical cable includes a cylindrical umbilical cable body 1, and a plurality of groups of shield-scale drag reduction structural units 2 are formed on the outer circumference of the umbilical cable body 1. The plurality of groups of shield-scale drag reduction structural units 2 are regularly arranged along the outer circumference of the umbilical cable body 1 to form a fish scale bionic structure or a fin-shaped bionic structure.

[0034] It is understandable that the anti-turbulence umbilical cable provided in this embodiment has a shield-scale drag-reducing structural unit 2 designed on the outer circumference of the umbilical cable body 1, forming a fish-scale bionic structure or a fin-like bionic structure. Based on the fish-scale bionic structure or the fin-like bionic structure, it copes with the turbulent environment in the water, effectively reduces the fluid resistance in the turbulent environment, reduces the impact of hydrodynamic disturbances on the umbilical cable body 1 in the towing or static state, avoids the shaking, vibration and deformation problems caused by large hydrodynamic disturbances, and greatly improves the stability of the umbilical cable in 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 groups of shield-scale drag reduction structural units 2 are arranged on the outer peripheral surface of the umbilical cable body 1 along the axial direction and the circumferential direction of the umbilical cable body 1, and the center points of two adjacent shield-scale drag reduction structural units 2 are aligned with each other. It can be understood that this embodiment provides a method for aligning and arranging the shield-scale drag reduction structural units 2. All shield-scale drag reduction structural units 2 are neatly arranged in the transverse and longitudinal directions, with the center points aligned with each other to form a regular geometric distribution. This arrangement scheme is suitable for a uniform flow field environment. The transverse center spacing and the longitudinal center spacing of the shield-scale drag reduction structural units 2 are both 3mm, which can ensure the uniformity of the microstructure distribution, while forming a continuous drag reduction area to enhance the overall protection and drag reduction effect.

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

[0037] In some embodiments of the anti-disturbance umbilical cable of the present invention, see Figure 2 As shown, the shield-scale drag reduction structural unit 2 includes a plurality of parallel grooves, the lengths of which decrease from the center outward. It is understood that a microstructured surface layer (shield-scale drag reduction structural unit 2) is designed on the outer circumference of the umbilical cable body 1. The shield-scale drag reduction structural unit 2 is a biomimetic design, with the outer circumference of the umbilical cable body 1 presenting a biomimetic layout similar to microscopic fish scales or fins. In this embodiment, the shield-scale drag reduction structural unit 2 includes a regularly arranged combination of "grooves," the direction of which is parallel to the direction of water flow, and the shape resembles microscopic fish scales or fins. These microstructures can significantly reduce turbulence and frictional resistance by optimizing the fluid boundary layer characteristics.

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

[0039] It is understood that 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), with a groove width tolerance of 0.20±0.02mm, a groove depth control of 0.40±0.03mm, and a groove spacing specification of 0.2mm (spacing between groove edges). This example's shield-scale drag reduction structural unit 2 is inspired by the white shark's epidermal shield scale structure. The length gradient corresponds to the flow velocity gradient distribution, and the groove depth-to-width ratio (2:1) optimizes vortex control. Its boundary layer control method is as follows: the long central groove guides the main flow, generating a stable directional vortex, while the short grooves on either side induce lateral vortices that disrupt turbulence and disrupt secondary flow. Through the precise gradient groove architecture, while maintaining manufacturing feasibility, the overall flow performance is improved by more than 50% compared to traditional structures.

[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) form. In other 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 diamond protrusion, a dot array protrusion, a triangular protrusion, and a hexagonal protrusion. By designing the shield-scale drag reduction structural unit 2 with geometric forms such as diamond protrusions, dot arrays, triangular protrusions, and hexagonal protrusions, these diverse structural forms can achieve unique functional properties similar to shark skin.

[0042] Based on the structures of the anti-turbine umbilical cables in the above-mentioned embodiments or examples, in some embodiments of the anti-turbine umbilical cables of the present invention, the anti-turbine umbilical cables further include an end protection device 3, see again Figure 1 As shown, the end protection device 3 includes a connecting sleeve 31, a plurality of protection units 32 and a buffer material layer. The connecting sleeve 31 is sleeved on the end of the umbilical cable body 1; the plurality of protection units 32 are sleeved on the outer peripheral surface of the connecting sleeve 31, and a gap is left 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, and the protection unit 32 is filled with a silicone gasket or other buffering materials with excellent pressure resistance and flexibility, which effectively prevents the umbilical cable from being damaged by external force extrusion or sharp impact.

[0043] It is understandable that this embodiment employs an end protection device 3 at the end of the umbilical cable body 1 to reduce fluid disturbance, stress concentration, and fatigue damage risks in the end region, thereby improving the reliability of the cable body end, resolving the technical problem of the end being prone to breakage due to frequent stress or turbulent environments, and extending the overall service life of the umbilical cable. The protective unit 32 with a fan-shaped cross-section forms a teardrop-shaped anti-turbulence structure. Its shape conforms to the principle of streamlined design and can effectively reduce water disturbance at the end, reduce the impact of local high flow velocities on the end, and reduce stress concentration effects. This significantly reduces fluid disturbance and stress concentration in the end region, effectively avoiding fatigue damage and breakage at the end due to turbulent flow or frequent stress. This improvement significantly extends the service life of the cable body 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 modules 321, and semicircular holes are correspondingly provided on the opposing surfaces of the two sector modules 321. The two sector modules 321 are arranged around and sleeved on the outer circumferential surface of the connecting sleeve 31 and are fixed by fasteners 322. It can be understood that the protection unit 32 of this example adopts a modular design and has a detachable feature. Each protection unit 32 is composed of two sector modules 321 connected by fasteners such as bolts or snaps, and is firmly connected to the end of the umbilical cable body 1 by fastener fixation. The modular design supports flexible parts replacement and reduces maintenance costs.

[0045] The end protector 3 primarily consists of three or more protection units 32. Each unit 32 is securely fastened together into a single, stable unit via two detachable modular fan-shaped modules 321, ensuring sufficient strength and stability during underwater operations. Multiple protection units are secured together by steps 31, with gaps between them. This rationally designed structure allows for bending within a certain range of angles, effectively ensuring the umbilical cable's minimum bending radius and preventing damage to the cable structure caused by 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 includes, from the outside to the inside, an outer sheath 11, a non-metallic fiber 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 drainage line 18, and a watertight filling material 19 in the shielding layer 14. A shield scale drag reduction structural unit 2 is formed on the outer peripheral surface of the outer sheath 11; the non-metallic fiber bearing layer 12 is located on the inner side of the outer sheath 11; the inner sheath 13 is located on the inner side of the non-metallic fiber bearing layer 12; the shielding layer 14 is located on the inner side of the inner sheath 13; the control The signal transmission core cable 15 is located in the shielding layer 14, and multiple control signal transmission core cables 15 are evenly distributed circumferentially along the center of the umbilical cable body 1; the power transmission core cable 16 is located in the shielding layer 14, and multiple power transmission core cables 16 are evenly distributed circumferentially along the center of the umbilical cable body 1; the communication data transmission core cable 17 is located in the shielding layer 14, and multiple communication data transmission core cables 17 are evenly distributed circumferentially along the center of the umbilical cable body 1; the drainage line 18 is located in the shielding layer 14 and is electrically connected to the shielding layer 14; the watertight filling material 19 is filled in the shielding layer 14.

[0047] Specifically, outer sheath 11 and inner sheath 13 are each made of thermoplastic elastomer, vulcanized rubber, polyurethane, low-density polyethylene, medium-density polyethylene, high-density polyethylene, or other equivalent materials. Inner sheath 13 and shielding layer 14 wrap around the outer layers of control signal transmission core cable 15, power transmission core cable 16, and communication data transmission core cable 17, providing support and cushioning.

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

[0049] Shielding layer 14 is made of copper-plastic composite tape, aluminum-plastic composite tape, braided copper wire, or other equivalent materials. Shielding layer 14 wraps around the outer layer of control signal transmission core cable 15, power transmission core cable 16, and communication data transmission core cable 17, creating an electromagnetic shielding effect. Drain wire 18 maintains good electrical contact with shielding layer 14, forming potential equalization, effectively suppressing electromagnetic interference in the complex deep-sea environment. Drain wire 18 includes a conductor made of copper, aluminum, or other equivalent materials and a semi-conductive sheath surrounding the conductor. The semi-conductive sheath ensures electrical contact with shielding layer 14.

[0050] The control signal transmission core cable 15 and the power transmission core cable 16 both include a conductor and an insulating layer around the conductor. The conductor is made of copper, aluminum or other equivalent materials, and the insulating 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 has no serpentine shape; the communication and data transmission core cable 17 is internally provided with tight-buffered optical fibers, loose-tube optical fibers and stainless steel optical fibers, and the tight-buffered optical fibers, loose-tube optical fibers and stainless steel optical fibers are filled with grease and water-blocking glue. The optical fibers in the communication and data transmission core cable 17 are evenly distributed circumferentially along the center of the umbilical cable body 1, and water-blocking glue is filled in the twisted gaps to fill the cable gaps, so that the cable structure is compact and round.

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

[0052] The above-mentioned arrangement of layers and material usage within the umbilical cable body 1 ensures a smooth, rounded structure with a uniform outer diameter. This successfully overcomes the problems of traditional deflectors or protruding parts of braided capillary fiber structures causing stagnation, entanglement, or wear during winch cable arrangement. This design significantly improves the smoothness of winch cable arrangement operations, effectively reducing the complexity and manual intervention of the cable arrangement process, and lowering equipment maintenance frequency and operating costs.

[0053] On the other hand, the present invention further provides a method for preparing an anti-turbulence umbilical cable, which is suitable for preparing the anti-turbulence umbilical cable in any one 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. Arrange multiple control signal transmission core cables 15, multiple power transmission core cables 16, multiple communication and data transmission core cables 17, and drainage wires 18 in the shielding layer 14; S2. Electrically connect the drain wire 18 to the shielding layer 14 and fill the shielding layer 14 with a watertight filling material 19; S3. Sequentially install the inner protective layer 13, the non-metallic fiber bearing layer 12 and the outer protective layer 11 on the outer periphery of the shielding layer 14 from the inside to the outside; S4. Form multiple groups of shield-scale drag reduction structural units 2 on the outer peripheral surface of the outer sheath 11 by laser etching or die etching, thereby completing the preparation of the umbilical cable body 1; S5. Install the end protection device 3 on the end of the prepared umbilical cable body 1.

[0055] Among them, in step S4, a laser etching process can be used to form multiple groups of shield-scale drag reduction structural units 2. A high-precision laser device is used to scan and etch the outer peripheral surface of the outer sheath 11. According to the designed shark skin texture shape, a microscopic ridge-like unit structure is formed by laser engraving. The laser parameters (power, pulse frequency, etc.) can be adjusted to ensure that the depth and effect of the bionic texture meet the requirements of fluid mechanics while maintaining the strength of the surface material of the umbilical cable. Similarly, a die-casting etching process can be used to form multiple groups of shield-scale drag reduction structural units 2. A mold or roller with a shark skin microstructure is prepared. A regularly arranged bionic "groove" texture is machined on the mold surface. The mold or roller is applied to the surface of the outer sheath 11 by hot pressing or cold pressing, and the shark skin texture is accurately transferred to the surface of the umbilical cable.

[0056] In step S5, the specific installation steps and technical details are as follows: 1) Prepare pre-fabricated sector modules 321. Each module has an arc-shaped design. When assembled, they form a complete teardrop-shaped protective unit 32 (with a smaller upper portion and a larger lower portion). Fill the inner sides of the two sector modules 321 with a layer of cushioning material, such as a silicone gasket or other highly flexible, pressure-resistant material, to ensure effective shock absorption and impact reduction after installation. The two sector modules 321 are symmetrically assembled around the outer periphery of the umbilical cable body 1, ensuring that the bottom surfaces of the modules smoothly fit onto the surface of the connecting sleeve 31. 2) Secure the protective unit 32: Insert fasteners 322 (such as bolts, clips, or other mechanical fasteners) through the pre-set connection holes in the sector modules 321 to lock the two sector modules 321 into a complete protective unit 32. Tighten the bolts or adjust the clips to ensure that the joints between the modules are tight and that the protective unit 32 tightly covers the outer surface of the connecting sleeve 31, forming a stable, anti-turbulence structure. 3) Splicing multiple protection units 32: As needed, 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 the step of the connecting sleeve 31. A certain amount of space is left between each protection unit 32. These gaps are rationally distributed to allow the end protector 3 to bend within a certain range, ensuring the minimum bending radius requirement for the umbilical cable. The angle and position of each protection unit 32 are checked to ensure that the overall structure is neatly distributed and streamlined.

[0057] The anti-turbulence umbilical cable prepared by the method for preparing the anti-turbulence umbilical cable provided by the present invention significantly reduces the fluid resistance of the umbilical cable in a turbulent environment and reduces the impact of hydrodynamic disturbances on the cable body by designing a bionic shark skin structure in the outer sheath 11, thereby improving the stability of the umbilical cable and solving the problems of increased energy consumption, decreased strength and structural fatigue caused by the large hydrodynamic resistance in the marine fluid environment. The prepared umbilical cable body 1 has a round appearance and a uniform outer diameter, which overcomes the problem of the guide plate and the protruding part of the braided capillary fiber in the prior art being prone to jamming, entanglement or wear during the winch cable arrangement process, achieving efficient and smooth winch cable arrangement operation and 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, improve the reliability of the cable body end, solve the technical problem that the end is prone to breakage due to frequent stress or turbulent environment, and extend the overall service life of the umbilical cable.

[0058] By combining the above-mentioned bionic structure design of the umbilical cable surface (shield scale drag reduction structural unit 2) with the fan-shaped end protection device 3, an umbilical cable solution is provided for deep-sea operations that takes into account anti-turbulence, high strength and easy operation. The shortcomings of the existing technology such as inconvenient operation and maintenance and short life are overcome, and the applicability and reliability in the field of deep-sea engineering are improved.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An anti-turbation umbilical cable, characterized in that: The invention comprises a cylindrical umbilical cable body (1), wherein a plurality of groups of shield-scale drag reduction structural units (2) are formed on the outer peripheral surface of the umbilical cable body (1), and the plurality of groups of shield-scale drag reduction structural units (2) are regularly arranged along the outer peripheral surface of the umbilical cable body (1) to form a fish-scale bionic structure or a fin-shaped bionic structure.

2. The anti-disturbance umbilical cable according to claim 1, characterized in that: A plurality of groups of the shield-scale drag reduction structural units (2) are arranged on the outer peripheral surface of the umbilical cable body (1) in an aligned and spaced manner along the axial direction and the circumferential direction of the umbilical cable body (1), and the center points of two adjacent shield-scale drag reduction structural units (2) are aligned with each other; or, A plurality of groups of the shield-scale drag reduction structural units (2) are arranged on the outer peripheral surface of the umbilical cable body (1) along the axial direction of the umbilical cable body (1) at intervals to form a plurality of rows of the shield-scale drag reduction structural units (2), and the umbilical cable bodies (1) in two adjacent rows are arranged in a staggered manner in the circumferential direction of the umbilical cable body (1).

3. The anti-disturbance umbilical cable according to claim 1, characterized in that: The shield-scale drag reduction structural unit (2) comprises a plurality of parallel arranged grooves, and the lengths of the plurality of parallel arranged grooves decrease in sequence from the center to the outside.

4. The anti-disturbance umbilical cable according to claim 1, characterized in that: The shield-scale drag reduction structural unit (2) is a geometrically shaped protrusion, and the geometrically shaped protrusion is at least one of a diamond-shaped protrusion, a dot array protrusion, a triangular protrusion, and a hexagonal protrusion.

5. The anti-disturbance umbilical cable according to any one of claims 1 to 4, characterized in that: The anti-disturbance umbilical cable further comprises an end protection device (3), and the end protection device (3) comprises: A connecting sleeve (31) is sleeved on the end of the umbilical cable body (1); A plurality of protection units (32) are sleeved on the outer peripheral surface of the connecting sleeve (31), with a gap left between two adjacent protection units (32), and the cross section of the protection unit (32) is fan-shaped; A buffer material layer is filled between the connecting sleeve (31) and the protection unit (32).

6. The anti-disturbance umbilical cable according to claim 5, characterized in that: The protection unit (32) comprises two sector modules (321), and semicircular holes are correspondingly provided on the opposite surfaces of the two sector modules (321). The two sector modules (321) are enclosed and sleeved on the outer peripheral surface of the connecting sleeve (31) and are fixed by fasteners (322).

7. The anti-disturbance umbilical cable according to any one of claims 1 to 4, characterized in that: The umbilical cable body (1) comprises, from outside to inside: An outer protective layer (11), wherein the shield-scale drag reduction structural unit (2) is formed on an outer peripheral surface of the outer protective layer (11); A non-metallic fiber bearing layer (12) located inside the outer protective layer (11); An inner protective layer (13) located inside the non-metallic fiber bearing layer (12); A shielding layer (14) located inside the inner protective layer (13); A plurality of control signal transmission core cables (15) are located in the shielding layer (14), and the plurality of control signal transmission core cables (15) are evenly distributed circumferentially along the center of the umbilical cable body (1); A plurality of power transmission core cables (16) are located in the shielding layer (14), and the plurality of power transmission core cables (16) are evenly distributed circumferentially along the center of the umbilical cable body (1); A plurality of communication and data transmission core cables (17) are located in the shielding layer (14), and the plurality of communication and data transmission core cables (17) are evenly distributed circumferentially along the center of the umbilical cable body (1); A drain wire (18) located in the shielding layer (14) and electrically connected to the shielding layer (14); A watertight filling material (19) is filled in the shielding layer (14).

8. The anti-disturbance umbilical cable according to claim 7, characterized in that: The outer protective layer (11) and the inner protective layer (13) are respectively made of one of thermoplastic elastomer, vulcanized rubber, polyurethane, low-density polyethylene, medium-density polyethylene, and high-density polyethylene; The non-metallic fiber bearing layer (12) comprises multiple layers of non-metallic fibers twisted and wound in a spiral manner, and the twisting directions of the non-metallic fibers in two adjacent layers are opposite; The shielding layer (14) is made of a material selected from the group consisting of a copper-plastic composite tape, an aluminum-plastic composite tape, and a braided multi-strand copper wire; the drain wire (18) comprises a conductor and a semi-conductive sheath surrounding the conductor; The control signal transmission core cable (15) and the power transmission core cable (16) both include a conductor and an insulating layer around the conductor; a tight-buffered optical fiber, a loose-tubed optical fiber, and a stainless steel optical fiber are provided inside the communication data transmission core cable (17); and grease and water-blocking glue are filled between the tight-buffered optical fiber, the loose-tubed optical fiber, and the stainless steel optical fiber; The watertight filling material (19) is made of one of polyurethane glue, silicone rubber, polysulfide rubber and hot melt glue.

9. A method for preparing an anti-disturbance umbilical cable, characterized in that: Suitable for preparing the anti-disturbance umbilical cable according to any one of claims 1 to 8, the preparation method of the anti-disturbance umbilical cable comprising: A plurality of control signal transmission core cables (15), a plurality of power transmission core cables (16), a plurality of communication data transmission core cables (17), and a drainage line (18) are arranged in the shielding layer (14); The drain wire (18) is electrically connected to the shielding layer (14), and a watertight filling material (19) is filled into the shielding layer (14); An inner protective layer (13), a non-metallic fiber bearing layer (12), and an outer protective layer (11) are sequentially mounted on the outer periphery of the shielding layer (14) from the inside to the outside; Forming a plurality of shield-scale drag reduction structural units (2) on the outer peripheral surface of the outer sheath (11) by a laser etching process or a die-stamping etching process, thereby completing the preparation of the umbilical cable body (1); An end protection device (3) is mounted on the end of the prepared umbilical cable body (1).

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