A submarine detection array optical cable and a manufacturing method thereof

Abstract

The present invention discloses a method for manufacturing a submarine detection array optical cable, which comprises the following steps: obtaining maximum tensile strength data of the submarine optical cable and obtaining manufacturing thickness data of the inner sheath; weaving high-strength galvanized steel strands into a required diameter, extruding a sheath on the outside of the steel strands to form a central load-bearing member; subjecting a stainless steel tube to a multi-pass deep drawing process, inserting a special bend-insensitive optical fiber into the stainless steel tube, and filling the stainless steel tube with non-hydrogen-evolving fiber paste; twisting armored steel wires and an optical unit on the outside of the central load-bearing member; setting extrusion parameters based on the obtained inner sheath thickness data to extrude the inner sheath on the outside of the armored steel wires and the optical unit; the submarine detection array optical cable and the manufacturing method thereof of the present invention significantly improve the reliability and adaptability of the submarine optical cable in complex marine environments, provide key technical support for fields such as marine communications and resource exploration, and have broad 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 rapid development of marine resource development, marine science research, and marine communications, the performance and reliability of submarine optical cables, as critical infrastructure for marine information transmission, are receiving increasing attention. In the complex, ever-changing, and harsh marine environment, submarine optical cables face numerous severe challenges, which places higher demands on their manufacturing technology.

[0003] Traditional submarine optical cable manufacturing faces numerous challenges: The inner sheath thickness is designed based solely on experience, with tensile strength measured after production. This can result in the inner sheath being too thick, wasting material, or too thin, impacting performance. The outer sheath design fails to effectively integrate seawater corrosion and maximum tensile strength data, making it prone to failure under seawater erosion and stress. The outer sheath performance is not optimized based on cable laying depths, making it difficult to adapt to diverse environments. The lack of material composition regulation in transition zones leads to stress concentration and other issues, impacting the cable's stable operation. Therefore, new methods are urgently needed to manufacture submarine detection array cables with superior performance and strong adaptability to meet the needs of marine communications.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0005] In response to 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 solutions adopted in the present invention are 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. Braid the high-strength galvanized steel strands into the required diameter and extrude a sheath on the outside of 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 a 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 armored 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. Apply a layer of hot melt adhesive on the inner side of the armored steel tape 5 and wrap it around the outer side of the inner sheath 4 by longitudinally wrapping with a pattern;

[0014] S7. Acquire seawater environment data to obtain seawater corrosion data, and combine this with known maximum tensile strength data to obtain thickness data of the outer sheath 6;

[0015] S8. Based on the acquired data, prepare 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. Cool and solidify the processed optical cable.

[0017] As a preferred embodiment, the obtaining 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:

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

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

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

[0021]

[0022] Wherein, 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 method of twisting the armored steel wire 2 and the optical unit 3 outside the central load-bearing member 1 includes the following steps:

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

[0026] S42, connecting the armored steel wire 2 and the optical unit 3 to the 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 changes during 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 is possible to ensure that the submarine detection array optical cable achieves torque balance during the twisting process and avoids rotation when stretched, thereby meeting the requirements of users' actual engineering applications.

[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 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 extrusion head;

[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 method of acquiring 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 includes the following steps:

[0037] S71. Obtain seawater environmental 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] Where k is a constant, C is the concentration of the corrosive substance, 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] Where 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 that withstands the maximum tensile strength are weighted averaged to obtain the final thickness data T3 of the outer sheath 6. 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, 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. The steps include:

[0050] S81. Determine the outer sheath 6 performance required for different sections based on the depth data of the submarine cable laying area 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 dynamically adjusted step by step according to the length of the transition region.

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

[0054] S811, shallow sea area material composition ratio 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 the material composition in the moderate sea area 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 ratio of the 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%, 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 tape 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 special bend-insensitive optical fiber, non-hydrogen-evolving fiber paste, and 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%, and 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 submarine optical cables and obtains the manufacturing thickness data of the inner sheath. This allows the inner sheath thickness to be optimized while meeting the tensile force requirements and improving material utilization. Traditional submarine optical cable manufacturing usually conducts tensile strength testing after production. This lacks accurate data support for the inner sheath thickness in the early stage, resulting in design reliance on experience. This may result in the inner sheath being too thick, wasting material, or too thin, affecting performance. Therefore, by pre-calculating the maximum tensile strength data, not only can material use be optimized, but the performance stability and overall cost-effectiveness of the optical cable can also be significantly improved, better meeting the complex needs of marine communications.

[0067] 2. The present invention obtains seawater corrosion data by acquiring seawater environmental data, and combines this with known maximum tensile strength data to obtain outer sheath thickness data. This allows the outer sheath to adapt to the corrosive 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 in complex marine stress environments, 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 based on 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 in the performance of the optical cable material by gradually and dynamically adjusting the composition according to the length of the transition zone in the transition zone, avoiding performance inconsistency 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 user's needs for configuring 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 do 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, with a 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 following briefly introduces the drawings required for use in the embodiments. 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 any 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 4 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 tape; 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. They 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. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods 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 includes 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 include the following steps:

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

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

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

[0083]

[0084] Wherein, 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.

[0085] It should be noted that during the production of traditional submarine optical cables, tensile strength tests are usually carried out after 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 initial design of the thickness of the inner sheath 4, the optimal thickness of the inner sheath 4 is usually unknown and can only be determined based on experience and conventional standards. This may result in the inner sheath thickness being either too thick, resulting in material waste, or too thin, affecting the overall performance of the optical cable.

[0086] Therefore, by pre-combining the maximum tensile strength data to accurately calculate and manufacture the optical cable, it can not only meet the requirements of the working tensile length, but also optimize the use of materials while ensuring performance, improve the comprehensive cost-effectiveness and quality stability of the submarine cable, and better adapt to the complex and changeable marine environment and communication needs.

[0087] S2. Braid the high-strength galvanized steel strands into the required diameter and extrude a sheath on the outside of the steel strands to form a central load-bearing member 1;

[0088] S3, subjecting the stainless steel tube to a multi-pass deep drawing process, inserting a special bend-insensitive optical fiber into the stainless steel tube, and filling the stainless steel tube with a non-hydrogen-evolving fiber paste;

[0089] S4, twisting the armored steel wire 2 and the optical unit 3 on the outside of the central load-bearing member 1;

[0090] Furthermore, the process of twisting the armored steel wire 2 and the optical unit 3 outside the central load-bearing member 1 includes the following steps:

[0091] S41, fixing the central load-bearing member 1 on the central axis of the stranding device;

[0092] S42, connecting the armored steel wire 2 and the optical unit 3 to the twisting device to start twisting;

[0093] S43. Adjust the tension of the components to ensure uniformity and consistency during the twisting process;

[0094] S44. Use a torque balancing device to monitor the torque changes during the twisting process in real time to ensure that each component remains balanced and does not twist during the twisting process;

[0095] It should be noted that in the complex environment of the seabed, many detection devices are connected to optical cables. If the optical cables rotate when stretched, torsional stress will be generated at the connection points, which may cause the connection to loosen or 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.

[0096] 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;

[0097] Furthermore, the step of setting extrusion parameters based on the obtained thickness data of the inner sheath 4 so as to extrude the inner sheath 4 outside the armored steel wire 2 and the optical unit comprises the following steps:

[0098] S51, selecting an extrusion die based on known thickness data of the inner sheath 4;

[0099] S52, setting extruder and extruder, heating the material of inner sheath 4 to a molten state;

[0100] 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 extrusion head;

[0101] S54, during the extrusion process, real-time monitoring of extrusion speed, material temperature and mold pressure;

[0102] S55, cooling and solidifying the extruded optical cable.

[0103] 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.

[0104] S6. Apply a layer of hot melt adhesive on the inner side of the armored steel tape 5 and wrap it around the outer side of the inner sheath 4 by longitudinally wrapping with a pattern;

[0105] S7. Acquire seawater environment data to obtain seawater corrosion data, and combine this with known maximum tensile strength data to obtain thickness data of the outer sheath 6;

[0106] Furthermore, the acquisition of 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 includes the following steps:

[0107] S71. Obtain seawater environmental data, including seawater salinity, seawater pH value, and concentration of corrosive substances in seawater;

[0108] S72. Calculate the corrosiveness of seawater. The specific formula is:

[0109] R=k·(S1·C·10 -PH );

[0110] Where k is a constant, C is the concentration of the corrosive substance, S1 is the salinity of seawater, and R is the calculated corrosiveness;

[0111] S73. Calculate the thickness of the outer sheath 6. The specific formula is:

[0112]

[0113] Where 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;

[0114]

[0115] 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;

[0116] The calculated anti-corrosion thickness and the thickness that withstands the maximum tensile strength are weighted averaged to obtain the final thickness data T3 of the outer sheath 6. The formula is:

[0117] T3=w1·T1+w2·T2;

[0118] Among them, w1 and w2 are weight coefficients.

[0119] 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 structural integrity of the outer sheath 6 in the complex stress environment of the ocean is guaranteed based on the maximum tensile strength, which greatly extends the service life of the submarine optical cable and reduces the risk of failure caused by seawater erosion and tensile damage.

[0120] S8. Based on the acquired data, prepare 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;

[0121] Furthermore, the extrusion raw materials are prepared based on 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. The steps include:

[0122] S81. Determine the outer sheath 6 performance required for different sections based on the depth data of the submarine cable laying area and formulate corresponding material composition adjustment plans;

[0123] 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 as follows:

[0124] S811, shallow sea area material composition ratio 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%;

[0125] The proportion of the material composition in the moderate sea area 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%;

[0126] 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%

[0127] S82, starting extrusion processing according to the formulated material composition plan;

[0128] S83. In the transition region, the components are dynamically adjusted step by step according to the length of the transition region, as shown in the following table:

[0129]

[0130] It should be noted that adjusting the composition ratio of the outer sheath according to the different depths of the submarine cable laying area can significantly optimize the material performance. In shallow waters, the wear resistance of the outer sheath needs to be enhanced to resist friction from sand and stones. 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.

[0131] S9. Cool and solidify the processed optical cable.

[0132] A submarine detection array optical cable is manufactured by the above manufacturing method.

[0133] Furthermore, a submarine detection array optical cable, the material of the optical cable includes:

[0134] Central load-bearing member 1, armored steel wire 2, optical unit 3, inner sheath 4, armored steel tape 5, outer sheath 6;

[0135] 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;

[0136] The optical unit 3 is composed of special bend-insensitive optical fiber, non-hydrogen-evolving fiber paste, and stainless steel tube;

[0137] 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%, and lubricant 1%;

[0138] The armored steel belt 5 is a galvanized steel-plastic composite belt;

[0139] 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;

[0140] 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.

[0141] The armored steel wire 2 uses 7 2.5mm high-strength galvanized steel wires with a tensile strength of not less than 2160MPa.

[0142] There are 1 to 6 optical units 3 in total, and each optical unit uses special bend-insensitive optical fiber or G.657A2 single-mode optical fiber according to user requirements.

[0143] The inner sheath 4 is made of high-density polyethylene with a nominal outer diameter of 17.7 mm.

[0144] The armored steel belt 5 is longitudinally wrapped with a 0.15mm steel-plastic composite belt.

[0145] The outer sheath 6 is made of high-density polyethylene with a nominal outer diameter of 23.7 mm.

[0146] 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 principles of the present invention should be included in the scope of protection 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); S11. Obtain the maximum tensile strength data of submarine optical cables , 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) based on the maximum tensile strength and the mechanical properties of the material. The specific formula is: ； in, is the thickness of the inner sheath (4), is the length of the optical cable, is the safety factor, is the tensile strength of the material; S2, braiding high-strength galvanized steel strands into a desired diameter, and extruding a sheath on the outside of 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 a 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 armored steel wire (2) and the optical unit (3) outside 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. Apply a layer of hot melt adhesive on the inner side of the armored steel strip (5) and wrap it around the outer side of the inner sheath (4) by longitudinally wrapping it in a patterned manner; 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); S71. Obtain seawater environmental data, including seawater salinity, seawater pH value, and concentration of corrosive substances in seawater; S72. Calculate the corrosiveness of seawater. The specific formula is: ； in, is a constant, is the concentration of corrosive substances, is the salinity of seawater, is the calculated corrosion degree; S73. Calculate the thickness of the outer sheath (6). The specific formula is: ； in, is the calculated anti-corrosion thickness, For corrosion protection requirements, is the corrosion resistance coefficient, is the expected service life; ； in, is the thickness that bears the maximum tensile strength after calculation, is the maximum tensile force, is the outer diameter of the outer sheath, is the tensile strength of the material; The calculated anti-corrosion thickness and the thickness that bears the maximum tensile strength are weighted averaged to obtain the final thickness data of the outer sheath (6). , the formula is: ； in, is the weight coefficient; S8. Based on the data obtained, prepare the extrusion raw materials and perform the extrusion process. 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. Cool and solidify 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 twisting the armored steel wire (2) and the optical unit (3) outside the central load-bearing member (1) comprises the following steps: S41, fixing the central load-bearing member (1) on the central axis of the stranding device; S42, connecting the armored 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 each component remains balanced and does not twist during the twisting process.

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

4. The method for manufacturing a submarine detection array optical cable according to claim 1, characterized in that: The method comprises the following steps: preparing extrusion raw materials based on the obtained data, performing extrusion processing, 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. S81. Determine the outer sheath (6) performance required for different sections based on the depth data of the submarine cable laying area 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 dynamically adjusted step by step according to the length of the transition region.

5. A submarine detection array optical cable, characterized in that: Made according to the manufacturing method according to any one of claims 1 to 4.

6. The submarine detection array optical cable according to claim 5, characterized in that: The cable materials 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 armored steel strip (5) is a galvanized steel-plastic composite strip; 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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