Flexible flame-retardant cable for ships and warships

Abstract

The utility model relates to the technical field of cables, and discloses a flexible flame-retardant cable for ships, which comprises a main core cable, an insulating layer adhered and connected to the outer surface of the main core cable, a shielding layer adhered and connected to the outer surface of the insulating layer, a filling layer adhered and connected to the outer surface of the shielding layer, and an anti-impact layer adhered and connected to the outer surface of the filling layer. The outer surface of the main core cable is covered with an anti-impact layer, the outer surface of the anti-impact layer is covered with an armor layer, the outer surface of the armor layer is covered with an outer sheath layer, the main core cable is based on a plurality of ultra-thin stranded flexible copper wires, a copper-clad aluminum form is adopted, and the surface of the main core cable is coated with a tin coating. According to the utility model, the main core cable is based on the ultrafine multi-strand twisted flexible copper wires, adopts a copper-clad aluminum form and is coated with the tin coating, such a structure gives full play to the good conductivity of copper, the weight of copper-clad aluminum is reduced, the tin coating prevents oxidation, and stable and efficient transmission of electric power in a complex ship environment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to flexible flame-retardant cables for ships. Background Technology

[0002] Traditional shipboard cables have limitations in flexibility; larger cross-section cables are often not flexible enough and have a large bending radius. This poses significant challenges to cable laying and installation within the complex spatial layout of a ship. In confined spaces, it's difficult to meet the requirements for flexible cabling, increasing construction difficulty and cost, and potentially damaging the internal structure of the cable due to forced bending. Simultaneously, flame-retardant performance is a crucial factor that must be considered for shipboard cables. The shipboard environment is complex; in the event of a fire, if the cables lack good flame-retardant properties, flames can easily spread along the cables, causing a larger-scale fire and posing a serious threat to the lives of personnel on board.

[0003] Furthermore, ships face various harsh conditions during operation, such as high salt spray, high temperature, high humidity, and frequent mechanical vibration and impact. In such environments, the insulation performance of ordinary cables is prone to decline, leading to an increased risk of electrical faults. After long-term exposure to salt spray corrosion, high-temperature aging, and mechanical stress, the cable sheath and insulation layer may crack or break, affecting the cable's normal use. The heat dissipation performance of some existing cables also needs improvement. Because some cables have thick insulation and sheath layers to achieve flame-retardant properties, this hinders heat dissipation to some extent and limits the cable's current carrying capacity. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a flexible flame-retardant cable for ships, which aims to improve the problems of cable damage caused by ship swaying and cable corrosion in the high salt spray environment of ships in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flexible flame-retardant cable for ships, comprising a main core cable, an insulation layer bonded to the outer surface of the main core cable, a shielding layer bonded to the outer surface of the insulation layer, a filling layer bonded to the outer surface of the shielding layer, an impact-resistant layer bonded to the outer surface of the filling layer, an armor layer covering the outer surface of the impact-resistant layer, and an outer sheath layer covering the outer surface of the armor layer.

[0006] The main core cable is based on ultra-fine multi-strand flexible copper wire, and adopts the form of copper-clad aluminum with a tin-plated layer on the surface. Polyethylene foam is filled between the main core cable and the insulation layer.

[0007] As a further description of the above technical solution: the insulating layer is divided into inner and outer layers, the inner layer is made of polyimide and the outer layer is made of modified polyolefin.

[0008] As a further description of the above technical solution: the shielding layer is made of aluminum foil, and the outer surface of the shielding layer is covered with polyaniline.

[0009] As a further description of the above technical solution: the filling layer is divided into inner and outer layers. The inner layer is made of modified polyester fiber, and the modified polyester fiber is filled with a high thermal conductivity filler containing ceramic particles. The outer layer is made of longitudinally wrapped aluminum-plastic composite tape and is covered with a fluoroplastic coating.

[0010] As a further description of the above technical solution: the material of the impact-resistant layer is polyethylene foam.

[0011] As a further description of the above technical solution: the armor layer is made of high-strength steel wire and aramid fiber composite, and is covered with an impact-resistant layer by weaving or winding.

[0012] As a further description of the above technical solution: the outer sheath is made of polyurethane and has a polytetrafluoroethylene antibacterial agent embedded inside.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the main core cable is based on ultra-fine multi-strand flexible copper wire, and adopts copper-clad aluminum with a tin-plated layer. This structure makes full use of the good conductivity of copper, the copper-clad aluminum reduces weight, and the tin-plated layer prevents oxidation, ensuring stable and efficient power transmission in complex ship environments. Whether powering precision instruments or large equipment, it can continuously and stably provide sufficient power, effectively avoiding equipment failure or abnormal operation caused by unstable power transmission, and ensuring the normal operation of various ship systems.

[0015] 2. In this utility model, polyethylene foam material is used as the impact-resistant layer. When the ship is subjected to mechanical impacts such as vibration and collision during operation, the polyethylene foam effectively absorbs and disperses the impact force due to its good buffering performance, protecting the internal core cable, insulation layer and other key structures from damage, ensuring that the cable remains intact and operates stably under frequent mechanical action, and extending the service life of the cable. Attached Figure Description

[0016] Figure 1 This is a perspective view of the flexible flame-retardant cable for ships proposed in this utility model;

[0017] Figure 2 This is a diagram illustrating the flexible flame-retardant cable for ships proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the flexible flame-retardant cable for ships proposed in this utility model.

[0019] Legend:

[0020] 1. Main core cable; 2. Insulation layer; 3. Shielding layer; 4. Filling layer; 5. Impact-resistant layer; 6. Armor layer; 7. Outer sheath layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-3 An embodiment of this utility model provides: a flexible flame-retardant cable for ships, including a main core cable 1, an insulation layer 2 bonded to the outer surface of the main core cable 1, a shielding layer 3 bonded to the outer surface of the insulation layer 2, a filling layer 4 bonded to the outer surface of the shielding layer 3, an impact-resistant layer 5 bonded to the outer surface of the filling layer 4, an armor layer 6 covering the outer surface of the impact-resistant layer 5, and an outer sheath layer 7 covering the outer surface of the armor layer 6; the main core cable 1 is based on ultra-fine multi-strand flexible copper wire, adopts copper-clad aluminum form and is coated with a tin-plated layer on the surface, and polyethylene foam is filled between the main core cable 1 and the insulation layer 2.

[0023] refer to Figure 1 Specifically, the main core cable 1 is based on ultra-fine multi-strand flexible copper wire, using a copper-clad aluminum form with a tin-plated layer on the surface. This structural design utilizes the good conductivity of copper, reduces weight to some extent through the copper-clad aluminum form, and prevents the copper wire from oxidizing.

[0024] The insulation layer 2 is divided into inner and outer layers. The inner layer is made of polyimide, and the outer layer is made of modified polyolefin.

[0025] refer to Figure 2 Specifically, the polyimide of insulation layer 2 has excellent high-temperature resistance, chemical corrosion resistance, and electrical insulation properties, effectively isolating the main core cable 1 from the outside environment in the complex temperature and chemical environment of a ship, preventing current leakage. The modified polyolefin of the outer layer further enhances the insulation performance, while also possessing a certain degree of flexibility to adapt to the use of the cable in the vibration environment of a ship, ensuring the safety of power transmission.

[0026] The shielding layer 3 is made of aluminum foil, and the outer surface of the shielding layer 3 is covered with polyaniline.

[0027] refer to Figure 2Specifically, shielding layer 3 is made of aluminum foil with a polyaniline coating on its outer surface. The aluminum foil effectively shields against external electromagnetic interference, preventing external electromagnetic fields from affecting the signals transmitted within the cable and ensuring the accuracy and stability of signal transmission. Polyaniline, with its excellent conductivity and environmental stability, further enhances the shielding effect while protecting the aluminum foil from oxidation and corrosion, allowing shielding layer 3 to continue functioning effectively even in harsh environments such as those with high salt spray conditions on ships.

[0028] The filling layer 4 is divided into inner and outer layers. The inner layer is made of modified polyester fiber, which is filled with a high thermal conductivity filler containing ceramic particles. The outer layer is made of longitudinally wrapped aluminum-plastic composite tape and is covered with a fluoroplastic coating.

[0029] refer to Figure 3 Specifically, the filler layer 4 is divided into inner and outer layers. The modified polyester fiber in the inner layer provides a certain degree of flexibility and filling support, making the cable structure more stable. The ceramic microparticle high thermal conductivity filler can effectively improve the heat dissipation performance of the cable and quickly disperse and conduct the heat generated during the operation of the cable. The outer layer adopts longitudinally wrapped aluminum-plastic composite tape and is covered with a fluoroplastic coating. The aluminum-plastic composite tape further enhances the cable's anti-interference ability, while the fluoroplastic coating improves the corrosion resistance and flame retardant performance of the filler layer 4 and protects the internal structure of the cable from damage by external factors.

[0030] The material of the impact-resistant layer 5 is polyethylene foam.

[0031] refer to Figure 2 Specifically, during the operation of ships, they will inevitably be subjected to mechanical impacts such as vibration and collision. Polyethylene foam has good buffering properties and can absorb and disperse these impact forces, protecting the internal structure of the cable, such as the main core cable 1 and the insulation layer 2, from damage.

[0032] The armor layer 6 is made of high-strength steel wire and aramid fiber composite material, and is covered with impact-resistant layer 5 by weaving or longitudinal winding.

[0033] refer to Figure 3 Specifically, the high-strength steel wire of armor layer 6 provides strong tensile and compressive strength, which can withstand greater external forces and prevent the cable from being stretched, squeezed and deformed. The aramid fiber has excellent high temperature resistance, wear resistance and high strength, which further enhances the protective performance of armor layer 6, enabling it to effectively protect the core part of the cable for a long time in the harsh environment of ships, while maintaining a certain degree of flexibility, which facilitates the laying and installation of the cable.

[0034] The outer sheath layer 7 is made of polyurethane and has a polytetrafluoroethylene antibacterial agent embedded inside it.

[0035] refer to Figure 1Specifically, the polyurethane of the outer sheath layer 7 has good flame retardant properties, which can effectively prevent the spread of flames and reduce the damage of fire to ships in the event of fire or other accidents. At the same time, the polytetrafluoroethylene antibacterial agent can inhibit the growth and reproduction of bacteria, mold and other microorganisms on the cable surface, prevent the cable sheath from aging and being damaged due to microbial erosion, and extend the service life of the cable. It is especially suitable for the high humidity and high salt spray environment of ships, which are prone to the growth of microorganisms.

[0036] Working Principle: The core function of the cable is power transmission. Its main core cable 1 is based on ultra-fine multi-strand flexible copper wire, using a copper-clad aluminum design with a tin-plated layer. This structural design utilizes copper's excellent conductivity while reducing weight to some extent through the copper-clad aluminum form. The tin plating prevents copper wire oxidation. The polyimide insulation layer 2 possesses excellent high-temperature resistance, chemical corrosion resistance, and electrical insulation properties, effectively isolating the main core cable 1 from the outside environment in the complex temperature and chemical environment of a ship, preventing current leakage. The outer modified polyolefin layer further enhances insulation performance while providing a certain degree of flexibility, adapting to the cable's use in the vibration environment of a ship, ensuring the safety of power transmission. The shielding layer 3 uses aluminum foil with a polyaniline coating on its outer surface. The aluminum foil effectively shields against external electromagnetic interference, preventing external electromagnetic fields from affecting the signals transmitted within the cable, ensuring the accuracy and stability of signal transmission. Polyaniline has good conductivity and environmental stability, which can further enhance the shielding effect and protect the aluminum foil from oxidation and corrosion, so that the shielding layer 3 can continue to function effectively in harsh environments such as high salt spray on ships.

[0037] The filler layer 4 is divided into inner and outer layers. The modified polyester fiber in the inner layer provides a certain degree of flexibility and filling support, making the cable structure more stable. The ceramic microparticle high thermal conductivity filler can effectively improve the heat dissipation performance of the cable and quickly disperse and conduct the heat generated during the operation of the cable. The outer layer adopts longitudinally wrapped aluminum-plastic composite tape and is covered with a fluoroplastic coating. The aluminum-plastic composite tape further enhances the cable's anti-interference ability, while the fluoroplastic coating improves the corrosion resistance and flame retardant performance of the filler layer 4 and protects the internal structure of the cable from damage by external factors.

[0038] During ship operation, it is inevitable to be subjected to mechanical impacts such as vibration and collision. Polyethylene foam has good buffering properties, which can absorb and disperse these impact forces, protecting the internal structure of the cable, such as the main core cable 1 and the insulation layer 2, from damage. The high-strength steel wire of the armor layer 6 provides strong tensile and compressive strength, which can withstand the action of large external forces and prevent the cable from being stretched or squeezed and deformed. Aramid fiber has excellent high temperature resistance, wear resistance and high strength properties, which further enhances the protective performance of the armor layer 6, enabling it to effectively protect the core part of the cable for a long time in the harsh environment of the ship, while maintaining a certain degree of flexibility, which facilitates the laying and installation of the cable.

[0039] The polyurethane in the outer sheath layer 7 has good flame retardant properties. In the event of a fire or other accident, it can effectively prevent the spread of flames and reduce the damage to the ship. At the same time, the polytetrafluoroethylene antibacterial agent can inhibit the growth and reproduction of bacteria, mold and other microorganisms on the cable surface, prevent the cable sheath from aging and being damaged due to microbial erosion, and extend the service life of the cable. It is especially suitable for environments on ships with high humidity and high salt spray that are prone to the growth of microorganisms.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible flame-retardant cable for ships, comprising a main core cable (1), characterized in that: The outer surface of the main core cable (1) is bonded with an insulation layer (2), the outer surface of the insulation layer (2) is bonded with a shielding layer (3), the outer surface of the shielding layer (3) is bonded with a filling layer (4), the outer surface of the filling layer (4) is bonded with an impact-resistant layer (5), the outer surface of the impact-resistant layer (5) is covered with an armor layer (6), and the outer surface of the armor layer (6) is covered with an outer sheath layer (7). The main core cable (1) is based on ultra-fine multi-strand flexible copper wire, and is in the form of copper-clad aluminum with a tin-plated layer on the surface. Polyethylene foam is filled between the main core cable (1) and the insulation layer (2).

2. The flexible flame-retardant cable for ships according to claim 1, characterized in that: The insulating layer (2) is divided into inner and outer layers. The inner layer is made of polyimide and the outer layer is made of modified polyolefin.

3. The flexible flame-retardant cable for ships according to claim 1, characterized in that: The shielding layer (3) is made of aluminum foil, and the outer surface of the shielding layer is covered with polyaniline.

4. The flexible flame-retardant cable for ships according to claim 1, characterized in that: The filling layer (4) is divided into inner and outer layers. The inner layer is made of modified polyester fiber, and the modified polyester fiber is filled with a high thermal conductivity filler containing ceramic particles. The outer layer is made of longitudinally wrapped aluminum-plastic composite tape and is covered with a fluoroplastic coating.

5. The flexible flame-retardant cable for ships according to claim 1, characterized in that: The material of the impact-resistant layer (5) is polyethylene foam.

6. The flexible flame-retardant cable for ships according to claim 1, characterized in that: The armor layer (6) is made of high-strength steel wire and aramid fiber composite, and is covered with an impact-resistant layer (5) by weaving or winding.

7. The flexible flame-retardant cable for ships according to claim 1, characterized in that: The outer sheath layer (7) is made of polyurethane and has a polytetrafluoroethylene antibacterial agent embedded inside it.

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