CN223679841U - Light reliable high-strength watertight cable - Google Patents

Abstract

This utility model relates to a lightweight, reliable, high-strength, watertight cable, belonging to the field of cable technology. The cable core consists of five 2×0.25mm² lightweight twisted-pair strands, five highly reliable water-blocking core strands, and a high-strength filler core strand. Outside the cable core, a flame-retardant elastic inner sheath, an aluminum-magnesium alloy shielding layer, and a flame-retardant elastic outer sheath are sequentially arranged. This structural design ensures the tensile strength and underwater working requirements of the product while also making the filler core more rounded, with a smaller outer diameter, smaller volume, and lighter weight. The cable core structure is also more stable, ensuring the overall high strength of the cable.

Description

Light reliable high-strength watertight cable

Technical Field

The utility model relates to a light reliable high-strength watertight cable, belongs to the technical field of cables, is applied to the fields of ocean engineering, ships, electric power, metallurgy, mines and weaponry, and is a high-strength watertight cable suitable for underwater signal transmission and deep sea operation.

Background

Watertight cables play a critical role in a number of fields as an important wire and cable product. However, despite its many advantages, there are also some non-negligible disadvantages. At present, the existing common watertight cable in the market is large in size and heavy in weight, and cannot meet the use conditions of users with the requirements of size and weight. The common watertight cable is generally extruded with a thicker insulating layer, the shield adopts a tinning braiding structure, the sheath is extruded with a thicker sheath layer to ensure the appearance and guarantee the underwater operation, the structure determines the insulation thickness of the product, the size of an insulated wire core is larger, the braiding weight of the shield is heavier, and the thickness of the sheath of the finished cable is thicker, the overall size is larger and the weight is larger. Under the use conditions of limited space and weight of ships, ocean engineering, weaponry and the like, the common watertight cable often cannot meet the requirements, even causes use risks and causes secondary hazards.

The existing common watertight cable is relatively poor in structural stability, and the cable core is easy to move, so that the connector falls off and the conductor is exposed. Meanwhile, the existing common watertight cable is only simply considered to be used underwater when in use, various underwater environments are not comprehensively considered, such as a connection part on a ship or an indoor connection part of an underwater detector, safe and reliable use under different environments cannot be ensured, and the installation and maintenance are difficult, once faults occur, the maintenance work becomes complex and the cost is higher.

The tensile property of the cable is not considered in the design process of the conventional common watertight cable, the tensile strength is lower, the cable core, the shielding and the sheath of the cable are stressed at first under the influence of external force pulling or underwater severe environment, and the cable core, the shielding and the sheath which are pulled by stretching are deformed and even broken, so that the cable performance can not meet the requirement failure, and even potential safety hazards are caused.

Disclosure of Invention

In view of the defects that the prior art is large in size and heavy in weight and cannot meet the use requirements of users in terms of size and weight, the utility model provides the light reliable high-strength watertight cable which is small in size, light in weight, high in reliability and excellent in tensile property, and the size and the weight are reduced and the use reliability is ensured under the condition that the use requirements of users can be met.

The technical scheme is that a cable core is formed by 5 light-weight reliable high-strength watertight cables, 2 multiplied by 0.25mm < 2 > light twisted pair groups, 5 high-reliability water-blocking filling cores and high-strength filling core twisted cables, and a flame-retardant elastomer inner protective layer, an aluminum magnesium alloy shielding layer and a flame-retardant elastomer outer protective sleeve are sequentially arranged outside the cable core.

The silver-plated copper conductor has the advantages that the silver-plated copper conductor is tightly pressed, the silver-plated copper conductor is smaller in size and relatively lighter in weight on the basis of guaranteeing the electrical performance, the structure is more stable, the outer diameter consistency is higher, the insulating layer is made of the extruded thin-layer irradiation crosslinked ethylene-tetrafluoroethylene copolymer, the insulating outer diameter of the product is smaller, the size is lighter, the filling core is made of the high-reliability water-blocking filling core, the weight of the product can be effectively reduced and the water-blocking effect can be improved by taking the material as the filling core, and the shielding layer made of the aluminum-magnesium alloy is lighter by means of the design.

The utility model adopts a mode of combining center filling and multi-point filling, the structure can fill up according to the movement deformation of the cable core while ensuring the water blocking effect, so as to ensure the roundness and stability, strengthen the structural stability, ensure the cable core not to easily move, ensure the stability of the connecting connector, use the flame-retardant elastomer inner protective layer and the flame-retardant elastomer outer protective layer outside the cable core, take the environment of the connecting part on the ship or the indoor connecting part of the underwater detector and the like into consideration, and the structural design ensures that the product has wider applicable environment and higher reliability.

When the high-strength filling core is designed in a structure, the resistance strength requirement borne by the filling core is considered again, the inner core is formed by twisting a plurality of high-strength aramid filaments, and a thin layer of irradiation cross-linked ethylene-tetrafluoroethylene copolymer protective layer is extruded outside the inner core.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic view of the construction of a 2 x 0.25mm ² light twisted pair set of the present utility model;

Fig. 3 is a schematic structural view of the high strength filler core of the present utility model.

In the figure, 1, 2 multiplied by 0.25mm2 light twisted pair group, 1-1, insulating single wire, 1-1-1, silver-plated copper conductor, 1-1-2, thin layer irradiation cross-linked ethylene-tetrafluoroethylene copolymer insulating layer, 2, high strength filling core, 2-1, high strength aramid fiber, 2-2, thin layer irradiation cross-linked ethylene-tetrafluoroethylene copolymer protective layer, 3, high reliability water-blocking filling core, 4, flame-retardant elastomer inner protective layer, 5, aluminum magnesium alloy shielding layer, 6, flame-retardant elastomer outer protective sleeve.

Detailed Description

As shown in fig. 1, a light reliable high-strength watertight cable comprises a 2×0.25mm ² light twisted pair group 1, a high-strength filling core 2, a high-reliability water-blocking filling core 3, a flame-retardant elastomer inner protective layer 4, an aluminum magnesium alloy shielding layer 5 and a flame-retardant elastomer outer protective sleeve 6;

The center of 5 2X 0.25mm2 light twisted pair groups 1 is provided with a high-strength filling core 2, the periphery of 5 2X 0.25mm2 light twisted pair groups 1 is respectively provided with 1 high-reliability water-blocking filling core 3 between every two 2X 0.25mm2 light twisted pair groups 1, a cable core is formed after the cables are twisted, a flame-retardant elastomer inner protective layer 4 is extruded outside the cable core, an aluminum magnesium alloy shielding layer 5 is woven outside the flame-retardant elastomer inner protective layer 4, and a flame-retardant elastomer protective sleeve 6 is extruded outside the aluminum magnesium alloy shielding layer 5.

As shown in fig. 2, the 2X 0.25mm ² light twisted pair group 1 is formed by twisting 2 insulating single wires 1-1, wherein the insulating single wires 1-1 are formed by extruding a radiation crosslinked ethylene-tetrafluoroethylene copolymer insulating layer 1-1-2 outside a conductor 1-1-1 formed by a plurality of silver-plated copper conductive wire cores.

As shown in FIG. 3, the high-strength filling core 2 is formed by extruding a thin irradiation crosslinked ethylene-tetrafluoroethylene copolymer protective layer 2-2 outside an inner core 2-1, and the inner core 2-1 is formed by twisting a plurality of high-strength aramid filaments.

The utility model fully considers working environments such as cable underwater signal transmission, deep sea operation and the like when the conductor and the insulating layer are structurally designed, selected and manufactured, the structure of the conductor 1-1-1 after the plurality of silver-plated copper conductive wire cores are compacted by the mould is more stable and the outer diameter consistency is higher when the conductor 1-1-1 is manufactured, and ensures the thin layer and light implementation to each part when the extrusion irradiation cross-linking ethylene-tetrafluoroethylene copolymer insulating layer 1-1-2 meets the performance requirements. When the cable is twisted, a mode of combining center filling and multi-point filling is adopted, a high-strength filling core 2 is filled in the center of the cable, and a high-reliability water-blocking filling core 3 is filled between gaps of every two adjacent 2X 0.25mm2 light twisted pair groups 1.

Claims (4)

1. A light reliable high-strength watertight cable is characterized in that 5 light twisted pair groups (1) with the length of 2 multiplied by 0.25mm < 2 >, 5 high-reliability water-blocking filling cores (3) and a high-strength filling core (2) are stranded to form a cable core;

the cable core is sequentially provided with a flame-retardant elastomer inner protective layer (4), an aluminum magnesium alloy shielding layer (5) and a flame-retardant elastomer outer protective sleeve (6).

2. The light reliable high-strength watertight cable according to claim 1, wherein the cable core is structured such that a high-strength filling core (2) is arranged in the center of the 52×0.25mm2 light twisted pair groups (1), and 1 high-reliability water-blocking filling core (3) is respectively arranged between every two 2×0.25mm2 light twisted pair groups (1) on the periphery of the 52×0.25mm2 light twisted pair groups (1).

3. A lightweight reliable high strength watertight cable as claimed in claim 1 wherein said 2X 0.25mm ² lightweight twisted pair (1) is formed by 2 insulated single wires (1-1) twisted pairs, said insulated single wires (1-1) being formed by extrusion irradiation cross-linked ethylene-tetrafluoroethylene copolymer insulation (1-1-2) outside conductors (1-1-1) formed by a plurality of silver plated copper conductive wire cores.

4. A lightweight reliable high strength watertight cable as claimed in claim 1 wherein the high strength filler core (2) is composed of an inner core (2-1) and an outer extruded thin layer irradiation crosslinked ethylene-tetrafluoroethylene copolymer protective layer (2-2), the inner core (2-1) being formed by twisting a plurality of high strength aramid filaments.