Seabed detection array optical cable and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of a submarine detection array optical cable, and the method comprises the following steps: obtaining the maximum tensile strength data of a submarine optical cable, and obtaining the manufacturing thickness data of an inner sheath; high-strength galvanized steel strands are woven into the required diameter, and a sheath is extruded outside the steel strands to form a central force bearing part; performing multi-channel deep drawing process treatment on the stainless steel tube, penetrating the special bending insensitive optical fiber into the stainless steel tube, and filling the stainless steel tube with non-hydrogen-evolution fiber paste; high-strength galvanized steel wires and optical units are twisted outside the central force bearing piece; extrusion molding parameters are set based on the obtained thickness data of the inner sheath, so that the inner sheath is extruded outside the armored steel wire and the optical unit; according to the submarine detection array optical cable and the manufacturing method thereof, the reliability and adaptability of the submarine optical cable in a complex marine environment are remarkably improved, key technical support is provided for the fields of marine communication, resource exploration and the like, and the submarine detection array optical cable has wide application prospects and important economic value.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing special optical cables, and in particular to a submarine detection array optical cable and a manufacturing method thereof. Background Art

[0002] With the vigorous development of marine resource development, marine scientific research, and marine communications, the performance and reliability of submarine optical cables, as key infrastructure for marine information transmission, have received increasing attention. In the complex, changeable and harsh marine environment, submarine optical cables face many severe challenges, which puts higher requirements on their manufacturing technology.

[0003] There are many problems in the manufacturing of traditional submarine optical cables: the thickness of the inner sheath is designed based on experience, and the tensile strength is measured after production, which may result in the inner sheath being too thick to waste materials or too thin to affect performance; the outer sheath design does not effectively combine the seawater corrosion degree and the maximum tensile strength data, and is prone to failure under seawater erosion and stress; the outer sheath performance is not optimized according to the difference in the laying depth of the submarine cable, making it difficult to adapt to diverse environments; the lack of material composition adjustment in the transition area causes stress concentration and other problems, affecting the stable operation of the optical cable. Therefore, it is urgent to develop new methods to manufacture submarine detection array optical cables with excellent performance and strong adaptability to meet the needs of marine communications.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a submarine detection array optical cable and a manufacturing method thereof to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To this end, the specific technical solution adopted by the present invention is as follows:

[0007] A method for manufacturing a submarine detection array optical cable, the method comprising the following steps:

[0008] S1. Obtain the maximum tensile strength data of the submarine optical cable and obtain the manufacturing thickness data of the inner sheath 4;

[0009] S2, weaving high-strength galvanized steel strands into a required diameter, and extruding a sheath outside the steel strands to form a central load-bearing member 1;

[0010] S3, subjecting the stainless steel tube to a multi-pass deep drawing process, inserting the special bend-insensitive optical fiber into the stainless steel tube, and filling the stainless steel tube with a non-hydrogen-evolving fiber paste;

[0011] S4, twisting the high-strength galvanized steel wire 2 and the optical unit 3 on the outside of the central load-bearing member 1;

[0012] S5, setting extrusion parameters based on the obtained thickness data of the inner sheath 4, so that the inner sheath 4 is extruded outside the armored steel wire 2 and the optical unit;

[0013] S6, coating a layer of hot melt adhesive on the inner side of the armored steel belt 5, and wrapping it on the outer side of the inner sheath 4 by longitudinally wrapping with ribbed patterns;

[0014] S7, obtaining seawater environment data, obtaining seawater corrosion data, and combining the known maximum tensile strength data to obtain the thickness data of the outer sheath 6;

[0015] S8. According to the obtained data, prepare the extrusion raw materials and perform extrusion processing. During the extrusion process of the outer sheath 6, dynamically adjust the composition ratio of the outer sheath material according to the different depths of the submarine cable laying area, including shallow sea, medium sea and deep sea, to ensure that the outer sheath can adapt to the seabed environment at different depths;

[0016] S9, cooling and solidifying the processed optical cable.

[0017] As a preferred embodiment, the method of obtaining the maximum tensile strength data of the submarine optical cable and obtaining the manufacturing thickness data of the inner sheath 4 comprises the following steps:

[0018] S11. Obtain the maximum tensile strength data σ of the submarine optical cable max , length data;

[0019] S12, determining the mechanical properties of the material used for the inner sheath 4, including the tensile strength of the material and the safety factor of the material;

[0020] S13. Calculate the minimum thickness of the inner sheath 4 according to the maximum tensile strength and the mechanical properties of the material. The specific formula is:

[0021]

[0022] Among them, t is the thickness of the inner sheath 4, L1 is the length of the optical cable, s is the safety factor, and σ1 is the tensile strength of the material.

[0023] By accurately calculating the thickness of the inner sheath, it can be ensured that the inner sheath will not break under the maximum tensile strength of the optical cable, thereby improving the overall safety and reliability of the optical cable.

[0024] As a preferred embodiment, the process of twisting the high-strength galvanized steel wire 2 and the optical unit 3 outside the central load-bearing member 1 comprises the following steps:

[0025] S41, fixing the central load-bearing member 1 on the central axis of the stranding device;

[0026] S42, connecting the high-strength galvanized steel wire 2 and the optical unit 3 to a twisting device to start twisting;

[0027] S43, adjust the tension of the components to ensure uniformity and consistency during the twisting process;

[0028] S44. Use a torque balancing device to monitor the torque change in the twisting process in real time to ensure that each component remains balanced and does not twist during the twisting process;

[0029] Through the above steps, it can be ensured that the submarine detection array optical cable achieves torque balance during the twisting process and avoids rotation when stretched, thereby meeting the user's actual engineering application requirements.

[0030] As a preferred embodiment, the extrusion parameters are set based on the obtained thickness data of the inner sheath 4 so that the inner sheath 4 is extruded outside the armored steel wire 2 and the optical unit, comprising the following steps:

[0031] S51, selecting an extrusion die based on known thickness data of the inner sheath 4;

[0032] S52, setting extruder and extruder, heating the material of the inner sheath 4 to a molten state;

[0033] S53, the molten material of the inner sheath 4 is evenly coated on the outside of the armored steel wire 2 and the optical unit 3 through a die and an extruder;

[0034] S54, during the extrusion process, real-time monitoring of extrusion speed, material temperature and mold pressure;

[0035] S55, cooling and solidifying the extruded optical cable.

[0036] As a preferred embodiment, the acquisition of seawater environment data, obtaining seawater corrosion data, and obtaining the thickness data of the outer sheath 6 in combination with known maximum tensile strength data includes the following steps:

[0037] S71. Obtain seawater environment data, including seawater salinity, seawater pH value, and concentration of corrosive substances in seawater;

[0038] S72. Calculate the corrosiveness of seawater. The specific formula is:

[0039] R=k·(S1·C·10 -PH );

[0040] Among them, k is a constant, C is the concentration of corrosive substances, S1 is the salinity of seawater, and R is the calculated corrosiveness;

[0041] S73. Calculate the thickness of the outer sheath 6. The specific formula is:

[0042]

[0043] Among them, T1 is the calculated anti-corrosion thickness, P is the corrosion protection requirement, k1 is the corrosion resistance coefficient, and L is the expected service life

[0044]

[0045] Where T2 is the calculated thickness that bears the maximum tensile strength, F is the maximum tensile force, D is the outer diameter of the outer sheath, and σ2 is the tensile strength of the material;

[0046] The calculated anti-corrosion thickness and the thickness withstanding the maximum tensile strength are weighted averaged to obtain the final thickness data T3 of the outer sheath 6, and the formula is:

[0047] T3=w1·T1+w2·T2;

[0048] Among them, w1 and w2 are weight coefficients.

[0049] As a preferred embodiment, the extrusion raw material is prepared according to the obtained data, and the extrusion process is performed. During the extrusion process of the outer sheath 6, according to the different depths of the submarine cable laying area, including shallow sea, medium sea, and deep sea, the composition ratio of the outer sheath material is dynamically adjusted to ensure that the outer sheath can adapt to the seabed environment at different depths, including the following steps:

[0050] S81. According to the depth data of the submarine cable laying area, determine the outer sheath 6 performance required for different sections and formulate corresponding material composition adjustment plans;

[0051] S82, starting extrusion processing according to the formulated material composition plan;

[0052] S83. In the transition region, the components are adjusted dynamically and gradually according to the length of the transition region.

[0053] As a preferred implementation, the outer sheath 6 performance required for different sections is determined according to the depth data of the submarine cable laying area, and a corresponding material composition adjustment plan is formulated. The specific plan is:

[0054] S811, the composition ratio of shallow sea area materials is: polyethylene (PE) 70%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 8%, carbon fiber (CF) 1%, heavy calcium carbonate (HCC) 1%, iron powder 0%, antioxidant 1%, lubricant 1%, anti-ultraviolet agent 0%;

[0055] The proportion of materials in moderate sea areas is: polyethylene (PE) 65%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 10%, carbon fiber (CF3%, heavy calcium carbonate (HCC) 2%, iron powder, 0%, antioxidant, 1%, lubricant 1%, anti-ultraviolet agent 1%;

[0056] The material composition ratios in the deep sea area are: polyethylene (PE) 50%, chlorinated polyethylene (CPE) 15%, glass fiber (GF) 15%, carbon fiber (CF) 10%, heavy calcium carbonate (HCC) 7%, iron powder 3%, antioxidant 1%, lubricant 1%, and anti-ultraviolet agent 1%.

[0057] A submarine detection array optical cable is manufactured by the above manufacturing method.

[0058] As a preferred embodiment, the material of the optical cable includes:

[0059] Central load-bearing member 1, armored steel wire 2, optical unit 3, inner sheath 4, armored steel belt 5, outer sheath 6;

[0060] The central load-bearing member 1 is composed of high-strength galvanized steel strands and sheaths, and the armored steel wire 2 is made of high-strength galvanized steel wire;

[0061] The optical unit 3 is composed of a special bend-insensitive optical fiber, a non-hydrogen-evolving fiber paste, and a stainless steel tube;

[0062] The raw materials and proportions of the inner sheath 4 are: polyethylene (PE) 70%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 8%, carbon fiber (CF) 1%, heavy calcium carbonate (HCC) 1%, antioxidant 1%, lubricant 1%;

[0063] The armored steel belt 5 is a galvanized steel-plastic composite belt;

[0064] The raw materials of the outer sheath 6 are: polyethylene (PE), chlorinated polyethylene (CPE), glass fiber (GF), carbon fiber (CF), heavy calcium carbonate (HCC), iron powder, antioxidant, lubricant, and anti-ultraviolet agent.

[0065] The beneficial effects of the present invention are:

[0066] 1. The present invention obtains the maximum tensile strength data of the submarine optical cable and the manufacturing thickness data of the inner sheath, so that the inner sheath thickness is optimized while meeting the tension requirements and improving the material utilization rate. The traditional submarine optical cable manufacturing usually performs a tensile strength test after the production is completed, lacks the accurate data support of the inner sheath thickness in the early stage, resulting in the design relying on experience, and the inner sheath may be too thick to waste materials or too thin to affect the performance. Therefore, by pre-calculating with the maximum tensile strength data, not only can the material use be optimized, but also the performance stability and comprehensive cost performance of the optical cable can be significantly improved, so as to better meet the complex marine communication needs;

[0067] 2. The present invention obtains seawater corrosion data by acquiring seawater environment data, and obtains the thickness data of the outer sheath in combination with the known maximum tensile strength data, so that the outer sheath can adapt to the erosion characteristics of seawater and effectively resist chemical corrosion. At the same time, based on the maximum tensile strength data, the outer sheath is ensured to have good structural integrity under complex marine stress environments, thereby reducing the risk of failure caused by seawater erosion and tensile damage;

[0068] 3. The present invention determines the outer sheath performance required for different sections according to the depth data of the submarine cable laying area, and formulates corresponding material composition adjustment plans to enable the optical cable to adapt to environmental requirements at different depths, while reducing the risk of failure caused by environmental changes and improving the overall performance of the optical cable.

[0069] 4. The present invention can achieve a smooth transition of the performance of the optical cable material by gradually and dynamically adjusting the components according to the length of the transition zone in the transition zone, avoiding inconsistent performance and structural weakening caused by changes in environmental depth. In addition, this gradual dynamic adjustment method can significantly reduce stress concentration and interface problems caused by material mutations. By optimizing the transition section of the material, the risk of failure can be effectively reduced and the service life of the submarine optical cable can be extended.

[0070] 5. The optical cable structure of the present invention contains multiple optical units, which can meet the needs of users to configure various types of optical fibers; the optical units in the structure are twisted in the outer layer, which not only meets the requirements of optical fiber configuration, but also can realize branching of optical fibers at different intervals; the optical units in the structure have strong water pressure resistance and will not deform under a water pressure of 120MPa; the structure contains steel belt armor, which has good resistance to radial damage; the structure is compact and round, small outer diameter, light weight, high tensile strength, and the working water depth can reach 6000 meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0072] Figure 1 The present invention is a flowchart of a method for manufacturing a submarine detection array optical cable according to an embodiment of the present invention.

[0073] Figure 2 It is a structural diagram of a submarine detection array optical cable according to an embodiment of the present invention.

[0074] 1. Central load-bearing member; 2. Armored steel wire; 3. Optical unit; 4. Inner sheath; 5. Armored steel belt; 6. Outer sheath. DETAILED DESCRIPTION

[0075] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0076] According to an embodiment of the present invention, a submarine detection array optical cable and a manufacturing method thereof are provided.

[0077] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1 As shown, a method for manufacturing a submarine detection array optical cable according to an embodiment of the present invention comprises the following steps:

[0078] S1. Obtain the maximum tensile strength data of the submarine optical cable and obtain the manufacturing thickness data of the inner sheath 4;

[0079] Furthermore, the acquisition of the maximum tensile strength data of the submarine optical cable and the manufacturing thickness data of the inner sheath 4 comprises the following steps:

[0080] S11. Obtain the maximum tensile strength data σ of the submarine optical cable max , length data;

[0081] S12, determining the mechanical properties of the material used for the inner sheath 4, including the tensile strength of the material and the safety factor of the material;

[0082] S13. Calculate the minimum thickness of the inner sheath 4 according to the maximum tensile strength and the mechanical properties of the material. The specific formula is:

[0083]

[0084] Where, t is the thickness of the inner sheath 4, L1 is the length of the cable, s is the safety factor, σ1

[0085] is the tensile strength of the material.

[0086] It should be noted that during the production of traditional submarine optical cables, a tensile strength test is usually carried out after the production is completed. Only after the test can the tensile strength of the optical cable be clearly understood. However, under this manufacturing method, due to the lack of accurate maximum tensile strength data support for the design of the thickness of the inner sheath 4 in the early stage, it is usually impossible to understand the optimal thickness of the inner sheath 4, and it can only be determined by experience and conventional standards. This may cause the thickness of the inner sheath to be either too thick, resulting in material waste, or too thin, affecting the overall performance of the optical cable;

[0087] Therefore, by pre-combining the maximum tensile strength data to accurately calculate and manufacture the optical cable, not only can the working tensile length requirements be met, but also the material usage can be optimized while ensuring performance, thereby improving the comprehensive cost-effectiveness and quality stability of the submarine cable, and better adapting to the complex and changeable marine environment and communication needs.

[0088] S2, weaving high-strength galvanized steel strands into a required diameter, and extruding a sheath outside the steel strands to form a central load-bearing member 1;

[0089] S3, subjecting the stainless steel tube to a multi-pass deep drawing process, inserting the special bend-insensitive optical fiber into the stainless steel tube, and filling the stainless steel tube with a non-hydrogen-evolving fiber paste;

[0090] S4, twisting the high-strength galvanized steel wire 2 and the optical unit 3 on the outside of the central load-bearing member 1;

[0091] Furthermore, the process of twisting the high-strength galvanized steel wire 2 and the optical unit 3 outside the central load-bearing member 1 includes the following steps:

[0092] S41, fixing the central load-bearing member 1 on the central axis of the stranding device;

[0093] S42, connecting the high-strength galvanized steel wire 2 and the optical unit 3 to a twisting device to start twisting;

[0094] S43, adjust the tension of the components to ensure uniformity and consistency during the twisting process;

[0095] S44. Use a torque balancing device to monitor the torque change in the twisting process in real time to ensure that each component remains balanced and does not twist during the twisting process;

[0096] It should be noted that in the complex environment of the seabed, many detection devices are connected to optical cables. If the optical cable rotates when stretched, it will cause torsional stress in the connection parts, which may cause the connection to loosen and be damaged, thereby affecting the transmission stability and accuracy of the detection data, and even causing equipment failure, interrupting the entire detection mission. Therefore, it is crucial to achieve torque balance to ensure that the seabed detection array optical cable does not rotate when stretched.

[0097] S5, setting extrusion parameters based on the obtained thickness data of the inner sheath 4, so that the inner sheath 4 is extruded outside the armored steel wire 2 and the optical unit;

[0098] Further, the extrusion parameters are set based on the obtained thickness data of the inner sheath 4 so that the inner sheath 4 is extruded outside the armored steel wire 2 and the optical unit, including the following steps:

[0099] S51, selecting an extrusion die based on known thickness data of the inner sheath 4;

[0100] S52, setting extruder and extruder, heating the material of the inner sheath 4 to a molten state;

[0101] S53, the molten material of the inner sheath 4 is evenly coated on the outside of the armored steel wire 2 and the optical unit 3 through a die and an extruder;

[0102] S54, during the extrusion process, real-time monitoring of extrusion speed, material temperature and mold pressure;

[0103] S55, cooling and solidifying the extruded optical cable.

[0104] It should be noted that extrusion speed, material temperature and mold pressure are important factors in the production of the inner sheath 4. Stable extrusion speed can ensure product quality and production efficiency, appropriate material temperature can ensure fluidity and optimize energy utilization, and normal mold pressure reflects extrusion stability.

[0105] S6, coating a layer of hot melt adhesive on the inner side of the armored steel belt 5, and wrapping it on the outer side of the inner sheath 4 by longitudinally wrapping with ribbed patterns;

[0106] S7, obtaining seawater environment data, obtaining seawater corrosion data, and combining the known maximum tensile strength data to obtain the thickness data of the outer sheath 6;

[0107] Furthermore, the acquisition of seawater environment data, obtaining seawater corrosion data, and combining known maximum tensile strength data to obtain thickness data of the outer sheath 6 includes the following steps:

[0108] S71. Obtain seawater environment data, including seawater salinity, seawater pH value, and concentration of corrosive substances in seawater;

[0109] S72. Calculate the corrosiveness of seawater. The specific formula is:

[0110] R=k·(S1·C·10 -PH );

[0111] Among them, k is a constant, C is the concentration of corrosive substances, S1 is the salinity of seawater, and R is the calculated corrosiveness;

[0112] S73. Calculate the thickness of the outer sheath 6. The specific formula is:

[0113]

[0114] Among them, T1 is the calculated anti-corrosion thickness, P is the corrosion protection requirement, k1 is the corrosion resistance coefficient, and L is the expected service life

[0115]

[0116] Where T2 is the calculated thickness that bears the maximum tensile strength, F is the maximum tensile force, D is the outer diameter of the outer sheath, and σ2 is the tensile strength of the material;

[0117] The calculated anti-corrosion thickness and the thickness withstanding the maximum tensile strength are weighted averaged to obtain the final thickness data T3 of the outer sheath 6, and the formula is:

[0118] T3=w1·T1+w2·T2;

[0119] Among them, w1 and w2 are weight coefficients.

[0120] It should be noted that the thickness of the outer sheath 6 is determined by combining the seawater corrosion data and the maximum tensile strength data, so that the outer sheath 6 can adapt to the erosion characteristics of seawater and effectively resist the chemical corrosion of seawater. At the same time, the maximum tensile strength is used to ensure its structural integrity in the complex stress environment of the ocean, greatly extending the service life of the submarine optical cable and reducing the risk of failure caused by seawater erosion and tensile damage.

[0121] S8. According to the obtained data, prepare the extrusion raw materials and perform extrusion processing. During the extrusion process of the outer sheath 6, dynamically adjust the composition ratio of the outer sheath material according to the different depths of the submarine cable laying area, including shallow sea, medium sea and deep sea, to ensure that the outer sheath can adapt to the seabed environment at different depths;

[0122] Further, the extrusion raw material is prepared according to the obtained data, and the extrusion process is performed. During the extrusion process of the outer sheath 6, the composition ratio of the outer sheath material is dynamically adjusted according to the different depths of the submarine cable laying area, including shallow sea, medium sea, and deep sea, to ensure that the outer sheath can adapt to the seabed environment at different depths, including the following steps:

[0123] S81. According to the depth data of the submarine cable laying area, determine the outer sheath 6 performance required for different sections and formulate corresponding material composition adjustment plans;

[0124] According to the depth data of the submarine cable laying area, the outer sheath 6 performance required for different sections is determined, and a corresponding material composition adjustment plan is formulated. The specific plan is:

[0125] S811, the composition ratio of shallow sea area materials is: polyethylene (PE) 70%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 8%, carbon fiber (CF) 1%, heavy calcium carbonate (HCC) 1%, iron powder 0%, antioxidant 1%, lubricant 1%, anti-ultraviolet agent 0%;

[0126] The proportion of materials in moderate sea areas is: polyethylene (PE) 65%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 10%, carbon fiber (CF3%, heavy calcium carbonate (HCC) 2%, iron powder, 0%, antioxidant, 1%, lubricant 1%, anti-ultraviolet agent 1%;

[0127] The material composition ratio of deep sea area is: polyethylene (PE) 50%, chlorinated polyethylene (CPE) 15%, glass fiber (GF) 15%, carbon fiber (CF) 10%, heavy calcium carbonate (HCC) 7%, iron powder 3%, antioxidant 1%, lubricant 1%, anti-ultraviolet agent 1%

[0128] S82, starting extrusion processing according to the formulated material composition plan;

[0129] S83. In the transition area, the components are adjusted dynamically step by step according to the length of the transition area, as shown in the following table:

[0130]

[0131] It should be noted that by adjusting the composition ratio of the outer sheath according to the different depths of the submarine cable laying area, the material performance can be significantly optimized. In shallow waters, the wear resistance of the outer sheath needs to be enhanced to resist sand and stone friction. In moderate seas, the corrosion resistance needs to be enhanced to resist erosion by complex seawater components. In deep seas, the cold resistance and waterproofness need to be improved.

[0132] S9, cooling and solidifying the processed optical cable.

[0133] A submarine detection array optical cable is manufactured by the above manufacturing method.

[0134] Furthermore, a submarine detection array optical cable, the material of the optical cable includes:

[0135] Central load-bearing member 1, armored steel wire 2, optical unit 3, inner sheath 4, armored steel belt 5, outer sheath 6;

[0136] The central load-bearing member 1 is composed of high-strength galvanized steel strands and sheaths, and the armored steel wire 2 is made of high-strength galvanized steel wire;

[0137] The optical unit 3 is composed of a special bend-insensitive optical fiber, a non-hydrogen-evolving fiber paste, and a stainless steel tube;

[0138] The raw materials and proportions of the inner sheath 4 are: polyethylene (PE) 70%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 8%, carbon fiber (CF) 1%, heavy calcium carbonate (HCC) 1%, antioxidant 1%, lubricant 1%;

[0139] The armored steel belt 5 is a galvanized steel-plastic composite belt;

[0140] The raw materials of the outer sheath 6 are: polyethylene (PE), chlorinated polyethylene (CPE), glass fiber (GF), carbon fiber (CF), heavy calcium carbonate (HCC), iron powder, antioxidant, lubricant, and anti-ultraviolet agent;

[0141] It should be noted that the central load-bearing member 1 is made of 7 2.5mm high-strength galvanized steel wires twisted together, with a tensile strength of not less than 2160MPa, and the sheath is made of polyolefin material with a nominal outer diameter of 8.2mm.

[0142] The armored steel wire 2 uses 7 2.5mm high-strength galvanized steel wires with a tensile strength of not less than 2160MPa.

[0143] The optical units 3 include 1 to 6 optical units in total, and each optical unit uses a special bend-insensitive optical fiber or a G.657A2 single-mode optical fiber according to user requirements.

[0144] The inner sheath 4 is made of high-density polyethylene with a nominal outer diameter of 17.7 mm.

[0145] The armored steel belt 5 is longitudinally wrapped with a 0.15 mm steel-plastic composite belt.

[0146] The outer sheath 6 is made of high-density polyethylene with a nominal outer diameter of 23.7 mm.

[0147] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a submarine detection array optical cable, characterized in that: The method comprises the following steps: S1. Obtain the maximum tensile strength data of the submarine optical cable and obtain the manufacturing thickness data of the inner sheath 4; S2, weaving high-strength galvanized steel strands into a required diameter, and extruding a sheath outside the steel strands to form a central load-bearing member 1; S3, subjecting the stainless steel tube to a multi-pass deep drawing process, inserting the special bend-insensitive optical fiber into the stainless steel tube, and filling the stainless steel tube with a non-hydrogen-evolving fiber paste; S4, twisting the high-strength galvanized steel wire 2 and the optical unit 3 on the outside of the central load-bearing member 1; S5, setting extrusion parameters based on the obtained thickness data of the inner sheath 4, so that the inner sheath 4 is extruded outside the armored steel wire 2 and the optical unit; S6, coating a layer of hot melt adhesive on the inner side of the armored steel belt 5, and wrapping it on the outer side of the inner sheath 4 by longitudinally wrapping with ribbed patterns; S7, obtaining seawater environment data, obtaining seawater corrosion data, and combining the known maximum tensile strength data to obtain the thickness data of the outer sheath 6; S8. According to the obtained data, prepare the extrusion raw materials and perform extrusion processing. During the extrusion process of the outer sheath 6, dynamically adjust the composition ratio of the outer sheath material according to the different depths of the submarine cable laying area, including shallow sea, medium sea and deep sea, to ensure that the outer sheath can adapt to the seabed environment at different depths; S9, cooling and solidifying the processed optical cable.

2. The method for manufacturing a submarine detection array optical cable according to claim 1, characterized in that: The method of obtaining the maximum tensile strength data of the submarine optical cable and obtaining the manufacturing thickness data of the inner sheath 4 comprises the following steps: S11. Obtain the maximum tensile strength data σ of the submarine optical cable max , length data; S12, determining the mechanical properties of the material used for the inner sheath 4, including the tensile strength of the material and the safety factor of the material; S13. Calculate the minimum thickness of the inner sheath 4 according to the maximum tensile strength and the mechanical properties of the material. The specific formula is: Among them, t is the thickness of the inner sheath 4, L1 is the length of the optical cable, s is the safety factor, and σ1 is the tensile strength of the material.

3. The method for manufacturing a submarine detection array optical cable according to claim 1, characterized in that: The method of twisting the high-strength galvanized steel wire 2 and the optical unit 3 on the outside of the central load-bearing member 1 includes the following steps: S41, fixing the central load-bearing member 1 on the central axis of the stranding device; S42, connecting the high-strength galvanized steel wire 2 and the optical unit 3 to a twisting device to start twisting; S43, adjust the tension of the components to ensure uniformity and consistency during the twisting process; S44. Use a torque balancing device to monitor the torque changes during the twisting process in real time to ensure that all components remain balanced and do not twist during the twisting process.

4. The method for manufacturing a submarine detection array optical cable according to claim 1, characterized in that: The step of setting the extrusion parameters based on the obtained thickness data of the inner sheath 4 so that the inner sheath 4 is extruded outside the armored steel wire 2 and the optical unit comprises the following steps: S51, selecting an extrusion die based on known thickness data of the inner sheath 4; S52, setting extruder and extruder, heating the material of the inner sheath 4 to a molten state; S53, the molten material of the inner sheath 4 is evenly coated on the outside of the armored steel wire 2 and the optical unit 3 through a die and an extruder; S54, during the extrusion process, real-time monitoring of extrusion speed, material temperature and mold pressure; S55, cooling and solidifying the extruded optical cable.

5. The method for manufacturing a submarine detection array optical cable according to claim 1, characterized in that: The method of obtaining seawater environment data, obtaining seawater corrosion data, and obtaining the thickness data of the outer sheath 6 in combination with known maximum tensile strength data comprises the following steps: S71. Obtain seawater environment data, including seawater salinity, seawater pH value, and concentration of corrosive substances in seawater; S72. Calculate the corrosiveness of seawater. The specific formula is: R=k·(S1·C·10 -PH ); Among them, k is a constant, C is the concentration of corrosive substances, S1 is the salinity of seawater, and R is the calculated corrosiveness; S73. Calculate the thickness of the outer sheath 6. The specific formula is: Among them, T1 is the calculated anti-corrosion thickness, P is the corrosion protection requirement, k1 is the corrosion resistance coefficient, and L is the expected service life Among them, T2 is the calculated thickness that bears the maximum tensile strength, F is the maximum tensile force, D is the outer diameter of the outer sheath, and σ2 is the tensile strength of the material; The calculated anti-corrosion thickness and the thickness withstanding the maximum tensile strength are weighted averaged to obtain the final thickness data T3 of the outer sheath 6, and the formula is: T3=w1·T1+w2·T2; Among them, w1 and w2 are weight coefficients.

6. The method for manufacturing a submarine detection array optical cable according to claim 1, characterized in that: The method of preparing extrusion raw materials and performing extrusion processing according to the obtained data, and dynamically adjusting the composition ratio of the outer sheath material according to the different depths of the submarine cable laying area, including shallow sea, medium sea and deep sea, to ensure that the outer sheath can adapt to the seabed environment at different depths includes the following steps: S81. According to the depth data of the submarine cable laying area, determine the outer sheath 6 performance required for different sections and formulate corresponding material composition adjustment plans; S82, starting extrusion processing according to the formulated material composition plan; S83. In the transition region, the components are adjusted dynamically step by step according to the length of the transition region.

7. The method for manufacturing a submarine detection array optical cable according to claim 6, characterized in that: According to the depth data of the submarine cable laying area, the outer sheath 6 performance required for different sections is determined, and a corresponding material composition adjustment plan is formulated. The specific plan is: S811, the composition ratio of shallow sea area materials is: polyethylene (PE) 70%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 8%, carbon fiber (CF) 1%, heavy calcium carbonate (HCC) 1%, iron powder 0%, antioxidant 1%, lubricant 1%, anti-ultraviolet agent 0%; The proportion of materials in moderate sea areas is: polyethylene (PE) 65%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 10%, carbon fiber (CF3%, heavy calcium carbonate (HCC) 2%, iron powder, 0%, antioxidant, 1%, lubricant 1%, anti-ultraviolet agent 1%; The material composition ratios in the deep sea area are: polyethylene (PE) 50%, chlorinated polyethylene (CPE) 15%, glass fiber (GF) 15%, carbon fiber (CF) 10%, heavy calcium carbonate (HCC) 7%, iron powder 3%, antioxidant 1%, lubricant 1%, and anti-ultraviolet agent 1%.

8. A submarine detection array optical cable, characterized in that: Manufactured according to the manufacturing method of claims 1-7.

9. The submarine detection array optical cable according to claim 8, characterized in that: The materials of the optical cable include: Central load-bearing member 1, armored steel wire 2, optical unit 3, inner sheath 4, armored steel belt 5, outer sheath 6; The central load-bearing member 1 is composed of high-strength galvanized steel strands and sheaths, and the armored steel wire 2 is made of high-strength galvanized steel wire; The optical unit 3 is composed of a special bend-insensitive optical fiber, a non-hydrogen-evolving fiber paste, and a stainless steel tube; The raw materials and proportions of the inner sheath 4 are: polyethylene (PE) 70%, chlorinated polyethylene (CPE) 20%, glass fiber (GF) 8%, carbon fiber (CF) 1%, heavy calcium carbonate (HCC) 1%, antioxidant 1%, lubricant 1%; The armored steel belt 5 is a galvanized steel-plastic composite belt; The raw materials of the outer sheath 6 are: polyethylene (PE), chlorinated polyethylene (CPE), glass fiber (GF), carbon fiber (CF), heavy calcium carbonate (HCC), iron powder, antioxidant, lubricant, and anti-ultraviolet agent.

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