Fireproof bending-resistant marine cable

Abstract

The utility model relates to the technical field of cables, in particular to a fireproof bending-resistant marine cable, which comprises a plurality of cables and a sheath wrapped outside the plurality of cables. The cable comprises a denier filament, a mica tape, an insulating layer and a plurality of conductors. An aluminum foil mylar layer, a copper wire braided layer and a glass fiber tape are sequentially arranged between the insulating layer and the sheath. According to the utility model, the denier filament is additionally arranged at the center of the conductor of the single cable, so that the flexibility and the strength of the cable are improved, the bending-resistant effect of the cable is further optimized in cooperation with the insulating layer made of the thermoplastic elastomer material (TPE) and the sheath made of the polyurethane elastomer material (TPU), and when the cable is bent or stretched, the sheath and the insulating layer are prevented from cracking. Through the arrangement of the mica tape and the glass fiber tape, the fire resistance is enhanced, the conductors are prevented from being burnt out when a fire disaster occurs, circuit or signal transmission is prevented from being influenced, escape and fire extinguishing conditions are provided for personnel, and the copper wire braided layer and the aluminum foil mylar layer are utilized to form a double-shielding system, so that the stability during signal transmission is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a fire-resistant and bend-resistant marine cable. Background Technology

[0002] Marine cables are electrical wires and cables specifically designed for use on various river and sea vessels, as well as in near-shore or offshore structures. They include various types such as marine power cables, control cables, and communication cables. These cables are characterized by their small size, light weight, safety, reliability, and long lifespan, and possess excellent properties such as temperature resistance, fire resistance, flame retardancy, oil resistance, moisture resistance, and seawater resistance. They are widely used in the power, lighting, control, and communication systems of ships, ensuring the normal operation of the vessel in various complex environments. The selection of marine cables must be based on the actual conditions of the ship and the requirements of the electrical system to ensure that their quality and performance meet the requirements, thereby guaranteeing the safe operation of the ship. The environment in which ships operate is very complex, which places high demands on marine cables. The cables must be flexible enough for easy wiring and movement, and they must have sufficiently high fire resistance to ensure that they can remain in a fire for as long as possible, creating conditions for personnel to escape.

[0003] To address this, Chinese Patent No. CN222260607U discloses a marine lightweight power cable. By sequentially setting a first flame-retardant layer, a second flame-retardant layer, and a third flame-retardant layer on the outer surface of the wrapping tape, the first, second, and third flame-retardant layers can play a role in flame retardancy, slowing down, and preventing the spread of fire in the event of a fire. However, the above-mentioned cable and the cables in the prior art have insufficient flexibility and tensile strength. When the cable is laid or used, it is easily damaged when it is bent or stretched, resulting in poor signal transmission or affecting power transmission. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a fire-resistant and bend-resistant marine cable that improves the cable's flexibility and strength while ensuring normal power supply and communication transmission, exhibiting excellent bending and tensile strength properties.

[0005] The fire-resistant and bend-resistant marine cable of this utility model adopts the following technical solution, including multiple core wires twisted together and a sheath wrapped around the multiple core wires; the core wire includes denier wires, an insulation layer and multiple conductors, the multiple conductors are twisted around the denier wires, and the insulation layer is wrapped around the multiple conductors.

[0006] Optionally, a mica tape is provided between the conductor and the insulating layer.

[0007] Optionally, a fiberglass tape is provided between the insulation layer and the sheath.

[0008] Optionally, a shielding layer is provided between the insulation layer and the fiberglass tape.

[0009] Optionally, the shielding layer includes an aluminum foil Mylar layer and a copper wire braided layer.

[0010] Optionally, the copper wire braid layer adopts a tin-plated copper braid structure with a braid density greater than 80%.

[0011] Optionally, the conductor is a Class 6 tin-plated copper conductor, and the denier wire is 500D white denier wire.

[0012] Optionally, the insulation layer may be made of a thermoplastic elastomer material.

[0013] Optionally, the sheath may be made of polyurethane elastomer material.

[0014] The beneficial effects of this utility model are as follows: This fire-resistant and bend-resistant marine cable improves the cable's flexibility and strength by adding denier wires to the center of the conductor of a single cable. Combined with a thermoplastic elastomer (TPE) insulation layer and a polyurethane elastomer (TPU) sheath, it further optimizes the cable's bend resistance, preventing cracking of the sheath and insulation layer when the cable is bent or stretched during installation and use. The addition of mica tape and fiberglass tape enhances fire resistance, preventing conductor burnout in the event of a fire, thus preventing disruption of circuit or signal transmission and providing escape and firefighting conditions. The double shielding system, consisting of a copper wire braided layer and an aluminum foil Mylar layer, ensures the stability of signal transmission. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a fire-resistant and bend-resistant marine cable according to this utility model;

[0017] In the diagram: 1. Conductor; 2. Denier wire; 3. Mica tape; 4. Insulating layer; 5. Aluminum foil Mylar layer; 6. Copper wire braided layer; 7. Fiberglass tape; 8. Sheath. Detailed Implementation

[0018] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 As shown in the figure, the fire-resistant and bend-resistant marine cable provided by this utility model embodiment includes multiple core wires twisted together and a sheath 8 wrapped around the multiple core wires; the cable includes denier wires 2, an insulation layer 4, and multiple conductors 1, which are twisted around the denier wires 2. From the inside out, mica tape 3 and the insulation layer 4 are sequentially arranged on the outside of the multiple conductors 1. Between the insulation layer 4 and the sheath 8, from the inside out, an aluminum foil Mylar layer 5, a copper wire braided layer 6, and a fiberglass tape 7 are sequentially arranged.

[0020] Conductor 1 is a Class 6 tin-plated copper conductor to prevent oxidation; Denier wire 2 is 500D white denier wire, which gives the cable high flexibility and high strength, ensuring the stability of power supply and signal transmission.

[0021] The insulation layer 4 is made of thermoplastic elastomer (TPE), and the sheath 8 is made of polyurethane elastomer (TPU). Both the sheath 8 and the insulation layer 4 are elastic materials with high resilience and high strength, further ensuring the cable's bending resistance. When the cable is bent or stretched during cabling, cracking of the sheath 8 and the insulation layer 4 is prevented.

[0022] The mica tape 3 is calcined and, through the cooperation of the mica tape 3 and the fiberglass tape 7, protects the cable and prevents the conductor 1 from being burned through in the event of a fire, thus affecting the circuit or signal transmission, while providing conditions for personnel to escape or extinguish the fire.

[0023] The copper wire braided layer 6 adopts a tin-plated copper braided structure with a braiding density greater than 80%. The copper wire braided layer 6 and the aluminum foil Mylar layer 5 form a double shielding system to ensure the stability of signal transmission.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 fire resistant, kink resistant marine cable, characterized in that, The cable comprises a plurality of core wires twisted together and a sheath wrapped outside the plurality of core wires; the core wire comprises a filament, an insulation layer and a plurality of conductors, the plurality of conductors being twisted around the filament, and the insulation layer being wrapped outside the plurality of conductors.

2. A fire resistant, bend resistant marine cable according to claim 1, characterized in that A mica tape is arranged between the conductors and the insulation layer.

3. A fire resistant, bend resistant marine cable according to claim 2, characterised in that, A glass fiber tape is arranged between the insulation layer and the sheath.

4. A fire resistant, bend resistant marine cable according to claim 3, characterised in that, A shielding layer is arranged between the insulation layer and the glass fiber tape.

5. A fire resistant, bend resistant marine cable according to claim 4, characterised in that, The shielding layer comprises an aluminum foil Mylar layer and a copper wire braided layer.

6. A fire resistant, bend resistant marine cable according to claim 5, characterised in that, The copper wire braided layer adopts a tinned copper braided structure, and the braiding density is greater than 80%.

7. A fire resistant, bend resistant marine cable according to any one of claims 1 to 6, characterised in that, The conductors are 6-class tinned copper conductors, and the filament is a 500D white filament.

8. A fire resistant, bend resistant marine cable according to claim 7, characterised in that, The insulation layer adopts a thermoplastic elastomer material.

9. A fire resistant, bend resistant marine cable according to claim 8, characterised in that, The sheath adopts a polyurethane elastomer material.

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