Submarine watertight cable

Abstract

The utility model provides a submarine watertight cable, which relates to the technical field of wires and cables and comprises a conductor, an insulating layer, a filling layer, an outer sheath and sealing resin. The conductor is formed by twisting a plurality of metal monofilaments, the sealing resin is filled among the metal monofilaments, and the insulating layer wraps the outer sides of the metal monofilaments and the sealing resin; the gap between the conductor and the insulating layer is sealed through the sealing resin, so that the conductor can bear larger water pressure and is better in sealing performance, the technical problem that when a submarine watertight cable in the prior art is used in a humid environment, water invades into the cable from the end of the cable, and the electrical performance of the cable is reduced is solved, and the service life of the submarine watertight cable is prolonged. The water pressure resistance of the submarine watertight cable is improved, and the service life of the submarine watertight cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to a submarine watertight cable. Background Art

[0002] The wire and cable industry is a crucial supporting industry for economic development and is widely used across all sectors of the national economy. In recent years, with the sustained and rapid development of my country's economy and the advancement of urbanization, the wire and cable industry has maintained a high growth rate. This has led to higher performance requirements for wires and cables, requiring cables to possess specific characteristics. Submarine watertight cables must withstand pressure, seawater corrosion, high voltage, and high electrical insulation.

[0003] At present, existing submarine watertight cables are all equipped with longitudinal water-blocking twisted conductors and hydrophilic water-blocking ropes twisted into a longitudinal water-blocking cable core, and multiple layers of water-blocking tapes are arranged layer by layer on the outside of the core to improve the waterproofness of the submarine watertight cable.

[0004] However, when existing submarine watertight cables are used in humid environments, water can intrude from the ends of the cables into the cable interior, degrading the cables' electrical performance. Furthermore, when cables are used on the seabed, where there is high water pressure and corrosive seawater, materials such as PVC, cross-linked polyolefins, and silicone can experience degradation in insulation and sheath performance due to their poor seawater resistance. Utility Model Content

[0005] The purpose of the utility model is to provide a submarine watertight cable to solve the technical problem in the prior art that when the submarine watertight cable is used in a humid environment, water will invade the cable from the end of the wire and cable into the cable, causing the electrical performance of the cable to deteriorate.

[0006] In a first aspect, the present invention provides a submarine watertight cable comprising a conductor, an insulating layer, a filling layer, an outer sheath, and a sealing resin;

[0007] The conductor is made of a plurality of metal monofilaments twisted together, the sealing resin is filled between the metal monofilaments, and the insulating layer is wrapped around the metal monofilaments and the outside of the sealing resin.

[0008] Furthermore, the material of the metal monofilament is set to be silver-plated copper wire.

[0009] Furthermore, the material of the insulating layer is set to be ethylene-tetrafluoroethylene copolymer.

[0010] Furthermore, the conductor, the sealing resin and the insulating layer cooperate to form an insulating core, and multiple strands of the insulating core are evenly arranged in the outer sheath.

[0011] Furthermore, the filling layer is configured as a water-blocking rope, and a plurality of the water-blocking ropes are evenly arranged between the insulating cores.

[0012] Furthermore, the material of the outer sheath is set to be high-temperature resistant polyether elastomer polyurethane, and the outer sheath is wrapped around the outside of all the insulating cores.

[0013] Compared with the prior art, the utility model provides a submarine watertight cable, comprising a conductor, an insulating layer, a filling layer and an outer sheath, and also comprising a sealing resin; the conductor is made of a plurality of metal monofilaments twisted together, the sealing resin is filled between the metal monofilaments, and the insulating layer is wrapped around the outside of the metal monofilaments and the sealing resin; the gap between the conductor and the insulating layer is sealed by the sealing resin, so that the conductor can withstand greater water pressure and has better sealing performance, thereby alleviating the technical problem in the prior art that when the submarine watertight cable is used in a humid environment, water will invade the cable from the end of the wire and cable into the cable, causing the electrical performance of the cable to deteriorate, thereby improving the water pressure resistance of the submarine watertight cable and extending the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a structural diagram provided by an embodiment of the present utility model.

[0016] Reference numerals:

[0017] 100, conductor; 200, sealing resin; 300, insulation layer; 400, filling layer; 500, outer sheath. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0025] like Figure 1As shown, an embodiment of the present invention provides a submarine watertight cable, including a conductor 100, an insulating layer 300, a filling layer 400 and an outer sheath 500, and also includes a sealing resin 200; the conductor 100 is made of a plurality of metal monofilaments twisted together, the sealing resin 200 is filled between the metal monofilaments, and the insulating layer 300 is wrapped around the outside of the metal monofilaments and the sealing resin 200.

[0026] That is, the embodiment of the present invention provides a submarine watertight cable, which seals the gap between the conductor 100 and the insulating layer 300 through the sealing resin 200, so that the conductor 100 can withstand greater water pressure and has better sealing performance, thereby alleviating the technical problem in the prior art that when the submarine watertight cable is used in a humid environment, water will invade from the end of the wire and cable into the interior of the cable, causing the electrical performance of the cable to deteriorate, thereby improving the water pressure resistance of the submarine watertight cable and extending the service life of the product.

[0027] Specifically, the cross-section of the cable is circular, and the conductor 100 is formed by twisting metal monofilaments. Copper has excellent electrical conductivity and mechanical properties. In this embodiment, the conductor 100 is formed by twisting multiple copper monofilaments. The sealing resin 200 is filled between the metal monofilaments and wraps the conductor 100. In this way, the conductor 100 can be fully protected from water by the sealing resin 200. At the same time, the sealing resin 200 has the function of preventing the conductor 100 from oxidation and has excellent anti-deformation performance of the conductor 100, which can further extend the service life of the submarine watertight cable. The insulating layer 300 and the outer sheath are sequentially sleeved on the outside of the sealing resin 200 to form a submarine watertight cable.

[0028] Furthermore, the material of the metal monofilament is set to be silver-plated copper wire.

[0029] Specifically, in this embodiment, the conductor 100 is made of 0.1 mm silver-plated copper wires twisted together. By plating silver on the outer side of the copper wires, the corrosion resistance of the copper conductor 100 can be improved.

[0030] Furthermore, the material of the insulating layer 300 is set to be ethylene-tetrafluoroethylene copolymer.

[0031] Specifically, the insulating layer 300 is made of ethylene-tetrafluoroethylene copolymer, which is extruded onto the surface of the conductor 100. The thickness can be set to 0.1 to 0.5 mm, and in this embodiment, 0.25 mm. Ethylene-tetrafluoroethylene copolymer has high thermal stability, aging resistance, acid and alkali resistance, and flame retardancy. Furthermore, ethylene-tetrafluoroethylene copolymer has excellent dielectric strength and insulation resistance, making it very suitable for use as an insulating material.

[0032] Furthermore, the conductor 100 , the sealing resin 200 and the insulating layer 300 cooperate to form an insulated wire core, and multiple strands of the insulated wire core are evenly arranged in the outer sheath 500 .

[0033] Specifically, in this embodiment, the insulating core is provided with five strands, which are arranged in a circumferential array within the outer sheath 500, thereby ensuring the communication quality of the submarine watertight cable and improving the overall tensile performance of the submarine communication cable.

[0034] Preferably, the filling layer 400 is configured as a water-blocking rope, and a plurality of water-blocking ropes are evenly arranged between the insulating cores.

[0035] Specifically, the water-blocking rope is set at the center of the insulating core to fill the gaps in the insulating core. When moisture invades the cable, the water-blocking rope will expand, so that the gaps between the cores are filled tightly, thereby preventing further moisture from invading the interior of the cable and improving the waterproof effect of the submarine watertight cable.

[0036] Furthermore, the material of the outer sheath 500 is set to be high-temperature resistant polyether elastomer polyurethane, and the outer sheath 500 is wrapped around the outside of all the insulating cores.

[0037] Specifically, the outer sheath 500 is made of a high-temperature resistant polyether-based elastomeric polyurethane material through extrusion, filling the gaps created around the outer periphery of the wires and cables after cabling. Furthermore, elastomeric polyurethane exhibits superior resistance to pressure, abrasion, water pressure, aging, acid, alkali, and oil compared to other materials, resulting in a longer product lifespan.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A submarine watertight cable comprising a conductor (100), an insulating layer (300), a filling layer (400) and an outer sheath (500), characterized in that: Also includes a sealing resin (200); The conductor (100) is made of a plurality of twisted metal monofilaments, the sealing resin (200) is filled between the metal monofilaments, and the insulating layer (300) is wrapped around the metal monofilaments and the outside of the sealing resin (200).

2. The submarine watertight cable according to claim 1, characterized in that: The material of the metal monofilament is set to be silver-plated copper wire.

3. The submarine watertight cable according to claim 1, characterized in that: The material of the insulating layer (300) is set to be ethylene-tetrafluoroethylene copolymer.

4. The submarine watertight cable according to claim 3, characterized in that: The conductor (100), the sealing resin (200) and the insulating layer (300) cooperate to form an insulating core, and a plurality of strands of the insulating core are evenly arranged in the outer sheath (500).

5. The submarine watertight cable according to claim 4, characterized in that: The filling layer (400) is configured as a water-blocking rope, and a plurality of the water-blocking ropes are evenly arranged between the insulating cores.

6. The submarine watertight cable according to claim 4, characterized in that: The material of the outer sheath (500) is set to be high-temperature resistant polyether elastomer polyurethane, and the outer sheath (500) is wrapped around the outside of all the insulating cores.

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