Cable for ship engineering communication

Abstract

The utility model discloses a ship engineering communication cable, which relates to the field of cables and comprises a network cable unit group, an electric unit layer, a flame-retardant wrapping tape wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside. The network cable unit group comprises a plurality of network cable units, and the adjacent network cable units are attached to each other; the communication unit in the network cable unit is formed by twisting a plurality of wire groups, and each wire group is formed by twisting two insulated wire cores; and the electric unit layer is composed of a plurality of electric units which are uniformly distributed along the inner circumference of the flame-retardant wrapping tape wrapping layer. According to the utility model, the problems of power utilization of electrical equipment in a ship and access signal transmission of communication instrument equipment are simultaneously solved, the weight and the outer diameter of the cable for ship engineering communication are obviously smaller than those of a traditional ship cable, and the space utilization rate of the ship is improved.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a cable for ship engineering communication. Background Art

[0002] Ship construction is an important manifestation of a country's ocean-going capabilities. With the depletion of land resources, the development of marine resources has become increasingly important. Facing the increasingly fierce competition for marine resources, the construction of high-performance modern ships is an important guarantee for the safety of ocean voyages. The construction of high-performance modern ships has higher and higher requirements for ship digitization and informatization. Ships need to be equipped with a large number of communication wires and cables. At present, most ship cables are of general-purpose structures. Traditional ship cables have relatively large self-weights and outer diameters, and can no longer meet the development needs of new ships.

[0003] Ship cables are different from land cables. When ordinary ship cables are laid, due to factors such as laying space and load-bearing, most instrument communication cables and power cables are laid in the same pipeline. When multiple cables are laid together, the signals of instrument communication cables are easily interfered, and there are some problems such as unstable signal transmission, which affect the precise positioning and stable operation of the ship and pose certain potential safety hazards to the navigation of ship cables. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a cable for ship engineering communication, which solves the problems of power supply for internal electrical equipment and signal transmission access for communication instrument equipment on ships at the same time. The weight and outer diameter of this cable for ship engineering communication are significantly smaller than those of traditional ship cables, improving the space utilization rate of ships.

[0005] In order to achieve the above purpose, the utility model is realized by the following technical solutions:

[0006] An embodiment of the utility model provides a cable for ship engineering communication, which includes a network cable unit group, an electrical unit layer, a flame-retardant tape wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer arranged in sequence from the inside to the outside; the network cable unit group includes a plurality of network cable units, and adjacent network cable units are in contact with each other; the communication unit in the network cable unit is formed by stranding a plurality of wire groups, and each wire group is formed by twisting two insulated wire cores; the electrical unit layer is composed of a plurality of electrical units evenly distributed along the inner circumference of the flame-retardant tape wrapping layer.

[0007] As a further implementation method, a plurality of network cable units are cabled into a circular cable core, the gaps between the network cable units are filled with high-flame-retardant filling ropes, and a non-woven fabric is wrapped around to form a cable wrapping tape wrapping layer.

[0008] As a further implementation method, a composite tape shielding layer, a cable sheath layer and a braided shielding layer are sequentially arranged outside the communication unit.

[0009] As a further implementation method, a drainage wire is longitudinally arranged inside the composite tape shielding layer.

[0010] As a further implementation method, the composite tape shielding layer is a polyester tape and an aluminum-plastic composite tape, and the drainage wire is arranged on the aluminum foil surface inside the composite tape shielding layer.

[0011] As a further implementation method, the braided shielding layer is made of tinned copper wires woven.

[0012] As a further implementation method, the insulated wire core is composed of a network wire unit conductor and a network wire unit insulating layer outside the network wire unit conductor.

[0013] As a further implementation method, the electrical unit includes an electrical unit conductor and an electrical unit insulating layer, and a plurality of electrical unit conductors are wrapped by the electrical unit insulating layer.

[0014] As a further implementation method, the armor layer is made of tinned copper wires woven.

[0015] As a further implementation method, the inner sheath layer and the outer sheath layer are made of polyether-based thermoplastic polyurethane material.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) The cable of the present utility model includes a network wire unit group, an electrical unit layer, a flame-retardant tape wrapping layer, an inner sheath layer, an armor layer, and an outer sheath layer arranged in sequence from inside to outside. The network wire unit group is formed by stranding a plurality of network wire units into a circular cable core; and the electrical unit layer is composed of a plurality of electrical units evenly distributed between the stranding tape wrapping layer and the flame-retardant tape wrapping layer. The overall structure is compact, and the outer diameter of the cable can be reduced; the weight and outer diameter of the ship engineering communication cable are significantly smaller than those of traditional ship cables, improving the space utilization rate of the ship; the cable has excellent insulation performance, excellent high and low temperature resistance performance, good mechanical performance, and meets the requirements for laying in the ship environment of oil resistance, acid and alkali resistance, corrosion resistance, wear resistance, bend resistance, and mildew prevention; at the same time, it solves the problems of power supply for internal electrical equipment on the ship and signal transmission access for communication instrument equipment.

[0018] (2) The network wire unit of the present utility model includes a communication unit, a composite tape shielding layer, a cable sheath layer, and a braided shielding layer arranged in sequence from inside to outside. The communication unit is formed by stranding a plurality of wire groups, and each wire group is formed by twisting two insulated wire cores; a plurality of electrical unit conductors in the electrical unit are wrapped by the electrical unit insulating layer; enabling the cable to have good mechanical performance and insulation performance. Description of the Drawings

[0019] The accompanying drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0020] Figure 1 is a schematic structural diagram of the present utility model according to one or more embodiments;

[0021] Wherein, 1. Conductor of network cable unit, 2. Insulation layer of network cable unit, 3. Composite tape shielding layer, 4. Cable sheath layer, 5. Braided shielding layer, 6. High flame-retardant filling rope, 7. Cable-forming tape wrapping layer, 8. Conductor of electrical unit, 9. Insulation layer of electrical unit, 10. Flame-retardant tape wrapping layer, 11. Inner sheath layer, 12. Armor layer, 13. Outer sheath layer. Detailed implementation manners

[0022] Embodiment 1:

[0023] This embodiment provides a cable for ship engineering communication, as Figure 1 shown, including a network cable unit group, an electrical unit layer, a flame-retardant tape wrapping layer 10, an inner sheath layer 11, an armor layer 12, and an outer sheath layer 13 arranged in sequence from inside to outside.

[0024] The network cable unit group includes a plurality of network cable units, adjacent network cable units are in contact with each other, and the network cable units are located at the center of the cable after cabling; the network cable unit, as the key structure for the cable to realize communication and transmit information, provides signal data transmission services for instrument and meter devices.

[0025] In this embodiment, a Category 5e network cable unit is adopted. Four network cable units are cabled into a circular cable core. The gaps between the network cable units are filled with a high flame-retardant filling rope 3 and wrapped with a layer of light non-woven fabric, that is, the cable-forming tape wrapping layer 7.

[0026] The network cable unit includes a communication unit, a composite tape shielding layer 3, a cable sheath layer 4, and a braided shielding layer 5 arranged in sequence from inside to outside. Among them, the communication unit is formed by stranding a plurality of wire groups, and each wire group is formed by twisting two insulated wire cores.

[0027] In this embodiment, the communication unit includes four insulated wire cores. For the convenience of description, different colors are used to distinguish the insulated wire cores; as Figure 1 shown, the yellow and green insulated wire cores are twisted into a wire group, the red and blue insulated wire cores are twisted into a wire group, and the two wire groups are further twisted into a communication unit and wrapped with a layer of polyester tape + aluminum-plastic composite tape, that is, the composite tape shielding layer 3. A tinned copper wire is longitudinally placed on the inner aluminum foil surface of the composite tape shielding layer 3 as a drainage wire, and the diameter of the copper wire can be selected according to specific requirements, for example, the diameter is 0.51 mm.

[0028] Each insulated conductor core is composed of a network wire unit conductor 1 and a network wire unit insulation layer 2 wrapped around the outer side of the network wire unit conductor 1. In this embodiment, the network wire unit conductor 1 uses a Class 1 copper conductor, and the cross-sectional area of the network wire unit conductor 1 is 0.5 mm 2 ; The network wire unit insulation layer 2 is extruded by an extruder using irradiated cross-linked polyethylene insulating material, and the thinnest point is not less than 90% of the nominal thickness, and the concentricity does not exceed 1.4. The cable sheath layer 4 uses a 105°C military standard oil-resistant, halogen-free, low-smoke, flame-retardant irradiated cross-linked polyolefin, which has excellent high-temperature resistance and oil resistance, and good mechanical properties; the cable sheath layer 4 is formed by extrusion wrapping around the outer layer of the stranded communication unit, and the thinnest point of the sheath is not less than 80% of the nominal thickness, and the concentricity does not exceed 1.6.

[0029] A tinned copper wire is used on the outer side of the cable sheath layer 4 to form a braided shielding layer 5 by tinned copper wire braiding. In this embodiment, the network wire unit uses a double shielding of aluminum-plastic composite tape shielding + tinned copper wire braiding shielding (braiding density ≥ 88%). This shielding structure can shield the electromagnetic field generated when the cable is energized in the insulated conductor core, reduce electromagnetic interference to the outside, and at the same time improve the signal transmission stability.

[0030] The electrical unit is used for power transmission of electrical equipment. As the key structure of the electrical performance and power performance of the cable, the overall temperature resistance grade of the electrical unit can reach 200°C. As Figure 1 shown, the electrical unit layer is arranged between the cable-forming tape wrapping layer 7 and the flame-retardant tape wrapping layer 10, and is composed of a plurality of electrical units evenly distributed along the outer circumference of the cable-forming tape wrapping layer 7; the electrical unit includes an electrical unit conductor 8 and an electrical unit insulation layer 9, and a plurality of electrical unit conductors 8 are wrapped by the electrical unit insulation layer 9.

[0031] It should be noted that the network wire unit conductor 1, the electrical unit conductor 8, the network wire unit insulation layer 2, and the electrical unit insulation layer 9 are named for easy distinction and do not limit the copper conductor and the insulation layer.

[0032] The electrical unit conductor 8 in this embodiment uses a Class 2 round copper conductor structure and is regularly stranded; the maximum direct current resistance of the conductor at 20°C complies with the provisions of GB / T 3956-2008. The cross-sectional area of the electrical unit conductor 8 is 0.75 mm 2 . The electrical unit insulation layer 9 is extruded by an extruder using FEP fluoroplastic insulating material, and the thinnest point is not less than 90% of the nominal thickness, and the concentricity does not exceed 1.4.

[0033] The electrical unit insulation layer 9 is black and is marked with digital codes (1# - 22#). The electrical units are arranged in ascending order of digital codes on the outside of the network wire unit cable core. The flame-retardant tape wrapping layer 10 uses a low-smoke, halogen-free, high-flame-retardant tape.

[0034] The inner sheath layer 11 is disposed between the flame-retardant tape wrapping layer 10 and the armor layer 12, and is used to protect the electrical unit and the network cable unit from mechanical damage. In this embodiment, the flame-retardant tape wrapping layer 10 is wrapped with a low-smoke, halogen-free, high-flame-retardant tape; the inner sheath layer 11 is extruded from polyether-based thermoplastic polyurethane (TPU) with a Shore hardness of 85A, having excellent high and low temperature resistance, good mechanical properties, good flexibility, and the thinnest point of the inner sheath layer 11 is not less than 80% of the nominal thickness, and the concentricity does not exceed 1.6.

[0035] The armor layer 12 is woven from tinned copper wires with a braiding density ≥ 88%, which improves the anti-interference ability of the cable and enhances the mechanical properties of the cable; the outer sheath layer 13 is extruded from polyether-based thermoplastic polyurethane (TPU) with a Shore hardness of 85A, having excellent high and low temperature resistance and good mechanical properties.

[0036] In this embodiment, the network cable unit group is formed into a circular cable core by multiple network cable units; and the electrical unit layer is composed of multiple electrical units evenly distributed between the cable wrapping tape layer 7 and the flame-retardant tape wrapping layer 10. The overall structure is compact, which can reduce the outer diameter of the cable. At the same time, it solves the problems of power supply for internal electrical equipment on ships and signal transmission access for communication instrument equipment. The weight and outer diameter of this ship engineering communication cable are significantly smaller than those of traditional ship cables, improving the space utilization rate of ships; this lightweight composite ship cable has excellent electrical insulation performance, excellent high and low temperature resistance, good mechanical properties, and meets the requirements for laying in ship environments such as oil resistance, acid and alkali resistance, abrasion resistance, and bending resistance.

[0037] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A cable for ship engineering communication, characterized in that, It includes a network cable unit group, an electrical unit layer, a flame-retardant tape wrapping layer, an inner sheath layer, an armor layer, and an outer sheath layer, which are arranged from the inside out in sequence; the network cable unit group includes a plurality of network cable units, and adjacent network cable units are in contact with each other; the communication unit in the network cable unit is formed by stranding a plurality of wire groups, and each wire group is formed by twisting two insulated wire cores; the electrical unit layer is composed of a plurality of electrical units evenly distributed along the inner circumference of the flame-retardant tape wrapping layer.

2. A cable for ship engineering communication according to claim 1, characterized in that, A plurality of network cable units are cabled into a circular cable core, the gaps between the network cable units are filled with high-flame-retardant filling ropes, and a non-woven fabric is wrapped to form a cabled tape wrapping layer.

3. A ship engineering communication cable according to claim 1 or 2, characterized in that, A composite tape shielding layer, a cable sheath layer, and a braided shielding layer are successively arranged outside the communication unit.

4. A ship engineering communication cable according to claim 3, characterized in that, A drain wire is arranged longitudinally inside the composite tape shielding layer.

5. A ship engineering communication cable according to claim 4, characterized in that, The composite tape shielding layer is a polyester tape and an aluminum-plastic composite tape, and the drain wire is arranged on the aluminum foil surface inside the composite tape shielding layer.

6. A ship engineering communication cable according to claim 3, characterized in that, The braided shielding layer is made of tinned copper wire braiding.

7. A ship engineering communication cable according to claim 1 or 2, characterized in that, The insulated wire core is composed of a network cable unit conductor and a network cable unit insulation layer outside the network cable unit conductor.

8. A ship engineering communication cable according to claim 1, characterized in that, The electrical unit includes an electrical unit conductor and an electrical unit insulation layer, and a plurality of electrical unit conductors are wrapped by the electrical unit insulation layer.

9. A cable for ship engineering communication according to claim 1, characterized in that, The armor layer is made of tinned copper wire braiding.

10. A ship engineering communication cable according to claim 1 or 9, characterized in that, The inner sheath layer and the outer sheath layer are made of polyether-based thermoplastic polyurethane material.

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