Watertight dragging floating photoelectric composite cable

Abstract

The utility model discloses a watertight dragging floating photoelectric composite cable, which comprises a first outer sheath layer, an outer braided reinforcing layer, a second outer sheath layer, a plurality of optical fiber groups, a plurality of power wire core groups and a reinforcing core from outside to inside, the optical fiber group comprises an inner sheath layer, an inner braided reinforcing layer, an armor layer and optical fibers from outside to inside; and each power wire core group comprises an insulating layer and a power wire core conductor from outside to inside. According to the utility model, the reinforcing layers and the reinforcing cores are woven inside and outside, and PBO fibers and ultrahigh-strength polyethylene fibers are woven in a mixed manner, and aramid fibers are woven, so that the overall tensile strength of the cable reaches 60000N, and the deep sea exploration requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of photoelectric composite cables, in particular to a watertight towing floating photoelectric composite cable. Background Art

[0002] With the rapid development of my country's economy and science and technology in recent years, my country's communications industry has also flourished. The information transmission business in the communication network has shown a steady growth trend, while the data business has shown an exponential growth trend. Multimedia such as language, data and images need to be transmitted, so a cable that can solve broadband access, equipment power consumption and signal transmission is needed. Optoelectronic composite cable, as a new type of composite cable, can just solve such problems. However, as a new type of cable, optoelectronic composite cable is widely used on land, and there are many problems with optoelectronic composite cables used in the ocean. The towed optoelectronic composite cable for marine detection is a key component of the underwater detection system. It needs to have power transmission, optical fiber command, remote control command transmission, flexible bending performance, excellent corrosion resistance, wear resistance and repeated retraction and release capabilities. At present, the towed cables for marine detection mostly use metal protective layers and metal tubes to ensure the sealing and tensile strength of the cables, which leads to large cable weight and volume, inconvenient use, and the bending performance cannot meet the needs of deep-sea detection. Utility Model Content

[0003] The utility model aims to provide a watertight towing floating optoelectronic composite cable, which is used to solve at least one aspect of the technical problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A watertight towing floating optoelectronic composite cable, comprising from outside to inside: a first outer sheath layer, an outer braided reinforcement layer, a second outer sheath layer, a plurality of optical fiber groups, a plurality of power line core groups, and a reinforcement core;

[0006] The optical fiber group includes, from the outside to the inside, an inner sheath layer, an inner braided reinforcement layer, an armor layer, and optical fibers;

[0007] The power line core group comprises an insulating layer and a power line core conductor from the outside to the inside.

[0008] As a further solution of the present invention: the first outer sheath layer and the second outer sheath layer are both foamed polyurethane layers.

[0009] Foamed polyurethane is formed by adding a foaming agent to generate bubbles in polyurethane under certain conditions. It has excellent properties such as light weight, heat insulation, and sound insulation. It also has excellent elasticity, softness, elongation, and compression strength, good chemical stability, resistance to many solvents and oils, and excellent wear resistance. Foamed polyurethane has a closed foam pore structure, and rainwater will not penetrate through the pores, forming an overall waterproof layer with good waterproof performance.

[0010] As a further solution of the utility model: the outer braided reinforcement layer is braided by mixing PBO fibers and UHMWPE fibers.

[0011] PBO (poly(p-phenylene benzobisoxazole)) fiber has ultra-high strength and modulus, while UHMWPE (ultra-high strength polyethylene) fiber is known for its high toughness and impact resistance. By mixing and weaving, the advantages of both fibers can be fully utilized, significantly improving the overall strength of the composite, with excellent heat resistance and flame retardancy, and strong impact resistance.

[0012] The surface of PBO fiber is smooth and inert, which can easily cause yarn displacement and lateral wear when subjected to external forces. By mixing and weaving with UHMWPE fiber, this problem can be alleviated to a certain extent, and the stability and durability of the fiber reinforcement layer can be improved.

[0013] As a further solution of the utility model: the inner sheath layer is a polyurethane layer.

[0014] Polyurethane materials have high strength and good elasticity, can withstand external shocks and vibrations, have excellent wear resistance, can withstand various organic and inorganic acids, alkalis, amines, salts and solvents, have good chemical resistance, and have excellent impact resistance and tear resistance.

[0015] As a further solution of the utility model: the inner braided reinforcement layer is braided from aramid.

[0016] Aramid fiber has excellent properties such as high strength, high modulus and high temperature resistance. It also has good insulation properties, which improves the strength and tensile properties of the cable.

[0017] As a further solution of the utility model: the armor layer is a steel belt armor layer.

[0018] The steel belt armor layer can effectively protect the internal structure of the cable and prevent it from being damaged by mechanical external forces during construction and operation. It enhances the tensile strength and compressive strength of the cable, thereby extending the service life of the cable, improving the cable's anti-corrosion ability, and preventing the cable from being corroded by the external environment. The steel belt armor layer has high magnetic permeability and can provide good magnetic shielding effect.

[0019] As a further solution of the utility model: the reinforcing core is a steel wire rope.

[0020] The steel wire rope plays a supporting role in the cable, which can increase the mechanical strength of the cable and prevent the cable from being damaged by external forces such as mechanical extrusion, stretching or bending. It has the characteristics of high strength and high wear resistance.

[0021] As a further solution of the utility model: the insulating layer is an LDPE layer.

[0022] LDPE (High-Pressure Low-Density Polyethylene) has excellent electrical properties and extremely high insulation resistance, strong insulation ability, flexibility and moisture resistance.

[0023] As a further solution of the utility model: the power line core conductor is formed by twisting tinned copper wires.

[0024] Tin plating can reduce the resistance to the passage of electric current, thereby improving the conductivity of the cable, and prevent copper from being exposed to the air and oxidized to form verdigris, which increases resistance. At the same time, it improves weldability and increases mechanical strength.

[0025] The tinned copper wire strands are twisted to further enhance its conductivity, which can increase the overall mechanical strength and stability, while also having good soldering performance and high temperature resistance.

[0026] As a further solution of the utility model: the ratio of the twisted pitch to the diameter of the tinned copper wire is 8:1 to 10:1.

[0027] An appropriate pitch ratio can ensure that the single wires maintain good contact and conductivity during the twisting process. A too small pitch ratio may lead to poor contact between the single wires, affecting the overall conductivity; while a too large pitch ratio may increase manufacturing difficulty and cost.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] 1. The utility model uses inner and outer braided reinforcement layers and reinforcement cores, and uses mixed braiding of PBO fiber and ultra-high strength polyethylene fiber and aramid braiding to make the overall breaking force of the cable reach 60,000N, meeting the needs of deep-sea exploration.

[0030] 2. The utility model reduces the overall weight of the cable by using foamed polyurethane, low-density polyethylene and PBO fiber, and adjusts the outer diameter to keep the overall density of the cable consistent with seawater, which is convenient for deep-sea detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0032] Figure 1 A cross-sectional view of a watertight towed floating optoelectronic composite cable.

[0033] In the figure: 100, first outer sheath layer; 110, outer braided reinforcement layer; 120, second outer sheath layer; 130, inner sheath layer; 140, inner braided reinforcement layer; 150, armor layer; 160, optical fiber; 170, insulation layer; 180, power line core conductor; 190, reinforcement core. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0036] The present invention is limited only by the claims and their full scope and equivalents. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figure 1 In the embodiment of the utility model, a watertight towing floating optoelectronic composite cable comprises, from outside to inside: a first outer sheath layer 100, an outer braided reinforcement layer 110, a second outer sheath layer 120, a plurality of optical fiber groups, a plurality of power line core groups, and a reinforcement core 190;

[0039] The optical fiber group includes, from outside to inside, an inner jacket layer 130, an inner braided reinforcement layer 140, an armor layer 150, and an optical fiber 160;

[0040] The power line core group includes an insulating layer 170 and a power line core conductor 180 from the outside to the inside.

[0041] As a further solution of the present invention: the first outer sheath layer 100 and the second outer sheath layer 120 are both foamed polyurethane layers.

[0042] Foamed polyurethane has excellent properties such as light weight, heat insulation, sound insulation, etc. It also has excellent elasticity, softness, elongation and compression strength, good chemical stability, resistance to many solvents and oils, and excellent wear resistance. Foamed polyurethane has a closed foam pore structure, rainwater will not penetrate through the pores, forming an overall waterproof layer with good waterproof performance.

[0043] As a further solution of the present invention: the outer braided reinforcement layer 110 is braided by mixing PBO fibers and UHMWPE fibers.

[0044] PBO fiber has ultra-high strength and modulus, while UHMWPE fiber is known for its high toughness and impact resistance. Through mixed weaving, the advantages of the two fibers can be fully utilized, significantly improving the overall strength of the composite, with excellent heat resistance and flame retardancy, and strong impact resistance.

[0045] The surface of PBO fiber is smooth and inert, which can easily cause yarn displacement and lateral wear when subjected to external forces. By mixing and weaving with UHMWPE fiber, this problem can be alleviated to a certain extent, and the stability and durability of the fiber reinforcement layer can be improved.

[0046] As a further solution of the present invention: the inner sheath layer 130 is a polyurethane layer.

[0047] Polyurethane materials have high strength and good elasticity, can withstand external shocks and vibrations, have excellent wear resistance, can withstand various organic and inorganic acids, alkalis, amines, salts and solvents, have good chemical resistance, and have excellent impact resistance and tear resistance.

[0048] As a further solution of the present invention: the inner braided reinforcement layer 140 is braided from aramid.

[0049] Aramid fiber has excellent properties such as high strength, high modulus and high temperature resistance. It also has good insulation properties, which improves the strength and tensile properties of the cable.

[0050] As a further solution of the present invention: the armor layer 150 is a steel belt armor layer.

[0051] The steel belt armor layer can effectively protect the internal structure of the cable. In this embodiment, the steel belt armor layer is used to protect the optical fiber and prevent it from being damaged by mechanical external forces during construction and operation. It enhances the tensile strength and compressive strength of the cable, thereby extending the service life of the cable, improving the anti-corrosion ability of the cable, and preventing the cable from being corroded by the external environment. The steel belt armor layer has high magnetic permeability and can provide a good magnetic shielding effect.

[0052] As a further solution of the present invention: the reinforcing core 190 is a steel wire rope.

[0053] The steel wire rope plays a supporting role in the cable, which can increase the mechanical strength of the cable and prevent the cable from being damaged by external forces such as mechanical extrusion, stretching or bending. It has the characteristics of high strength and high wear resistance.

[0054] As a further solution of the present invention: the insulating layer 170 is a LDPE layer.

[0055] LDPE has excellent electrical properties and extremely high insulation resistance, strong insulation ability, flexibility and moisture resistance.

[0056] As a further solution of the present invention: the power line core conductor 180 is formed by twisting tinned copper wires.

[0057] Tin plating can reduce the resistance to the passage of electric current, thereby improving the conductivity of the cable, and prevent copper from being exposed to the air and oxidized to form verdigris, which increases resistance. At the same time, it improves weldability and increases mechanical strength.

[0058] The tinned copper wire strands are twisted to further enhance its conductivity, which can increase the overall mechanical strength and stability, while also having good soldering performance and high temperature resistance.

[0059] As a further solution of the utility model: the ratio of the twisted pitch to the diameter of the tinned copper wire is 9:1.

[0060] An appropriate pitch ratio can ensure that the single wires maintain good contact and conductivity during the twisting process. A too large pitch ratio may lead to poor contact between the single wires, affecting the overall conductivity; while a too small pitch ratio may increase manufacturing difficulty and cost.

[0061] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A watertight towed floating optoelectronic composite cable, characterized in that: From the outside to the inside, it comprises: a first outer sheath layer (100), an outer braided reinforcement layer (110), a second outer sheath layer (120), a plurality of optical fiber groups, a plurality of power line core groups, and a reinforcement core (190); The first outer jacket layer (100) and the second outer jacket layer (120) are both foamed polyurethane layers; The outer braided reinforcement layer (110) is braided from a mixture of PBO fibers and UHMWPE fibers; The optical fiber group comprises, from the outside to the inside, an inner sheath layer (130), an inner braided reinforcement layer (140), an armor layer (150), and optical fibers (160); The inner sheath layer (130) is a polyurethane layer; The inner braided reinforcement layer (140) is braided from aramid; The power line core group comprises, from the outside to the inside, an insulating layer (170) and a power line core conductor (180).

2. A watertight towed floating optoelectronic composite cable according to claim 1, characterized in that: The armor layer (150) is a steel belt armor layer.

3. A watertight towed floating optoelectronic composite cable according to claim 1, characterized in that: The reinforcing core (190) is a steel wire rope.

4. A watertight towed floating optoelectronic composite cable according to claim 1, characterized in that: The insulating layer (170) is an LDPE layer.

5. The watertight towed floating optoelectronic composite cable according to claim 1, characterized in that: The power line core conductor (180) is formed by twisting tinned copper wires.

6. A watertight towed floating optoelectronic composite cable according to claim 5, characterized in that: The ratio of the twisted pitch to the diameter of the tinned copper wire is 8:1-10:1.

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