CN218414015U

CN218414015U - Water-blocking type small-diameter multi-core insulated cable

Info

Publication number: CN218414015U
Application number: CN202220292940.2U
Authority: CN
Inventors: 高旭皓; 王成旺; 李清华; 吴英俊; 蔡长威
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2023-01-31
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a thin footpath multicore insulated cable of waterproofing type, constitute the cable core including a plurality of insulation core and the common transposition of counterpoint type full aromatic series copolyamide tensile fiber core, keep spacing distance between the insulation core, the outside cladding of cable core has AFRP in proper order around the covering, dampproof course in the fluororubber, PET resin area indulges a packet inoxidizing coating, the copper foil layer, the nylon anticorrosive coating, outer dampproof course of fluororubber and silane grafting crosslinking high density polyethylene oversheath, insulation core includes inner conductor and silane grafting crosslinking low density polyethylene insulating layer, AFRP is single strand aramid fiber twisted wire spiral around the covering and constitutes and the winding distance is two to four times of cable core external diameter, silane grafting crosslinking high density polyethylene oversheath external diameter is 1.8mm to 4.2mm. The cable has excellent flexibility and bending resistance, is not easy to break wires and break cores, has excellent moisture-proof and water-blocking performances, ensures the stable electrical characteristics of the cable, and is durable in use.

Description

Water-blocking type small-diameter multi-core insulated cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a thin footpath multicore insulated cable of waterproofing type.

Background

Multi-core cables are commonly used in medical devices, robots, mobile drive systems, and the like. Due to rapid development of transmission technology, maintenance testing technology and the like, the multi-core cable gradually develops to be thin and light. On the premise of diameter reduction, the outer diameter of the wire core is smaller, tensile strength and bending resistance of the conductor are reduced, and the cable is easy to break and break after repeated bending and twisting in the working process and is poor in durability. Moreover, under the influence of working condition environment, the phenomenon that the cable is affected by damp and water enters sometimes occurs, and the cable insulation is damaged, so that the potential hidden danger of influencing the normal operation of the cable is formed.

Disclosure of Invention

The utility model discloses to prior art's is not enough, and the technical problem that solve provides a thin footpath multicore insulated cable of waterproofing type, under thin footpath lightweight preparation prerequisite, has excellent pliability and bending resistance, is difficult for taking place disconnected line disconnected core phenomenon, and dampproofing water-blocking performance is excellent, guarantees the stable electrical characteristics of cable, durable use.

The utility model discloses a make above-mentioned technical problem can solve through following technical scheme.

Thin footpath multicore insulated cable of waterproofing type, including a plurality of insulation core and the common transposition of counterpoint type wholly aromatic copolyamide tensile fiber core constitution cable core, pass through between the insulation core counterpoint type wholly aromatic copolyamide tensile fiber core keeps spacing distance, the outside cladding in proper order of cable core has AFRP to indulge package inoxidizing coating, copper foil layer, nylon anticorrosive coating, fluororubber outer moisture barrier and silane grafting crosslinking high density polyethylene oversheath in covering, fluororubber, insulation core's external diameter is 0.12mm to 0.18mm, insulation core includes inner conductor and silane grafting crosslinking low density polyethylene insulating layer, AFRP is single strand aramid fiber twist spiral around the covering and constitutes and the winding distance is two to four times of cable core external diameter around the package, silane grafting crosslinking high density polyethylene oversheath external diameter is 1.8mm to 4.2mm.

Preferably, the interval distance between the insulated wire cores is 0.1mm to 0.3mm.

Preferably, the inner conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameters of 0.01mm to 0.03 mm.

Preferably, the single-stranded aramid twisted wire has a wire diameter of 0.06mm to 0.1mm.

Preferably, the single-stranded aramid twisted wire has a helix angle of 40 to 55 degrees.

Preferably, the outer sheath of the silane grafted and crosslinked high density polyethylene has a thickness of 0.5mm to 2.2mm.

Preferably, the thicknesses of the inner fluororubber moisture-proof layer and the outer fluororubber moisture-proof layer are both 0.2mm to 1mm.

Preferably, the copper foil layer is formed on the outer surface of the longitudinal covering protective layer of the PET resin tape through electroplating.

Preferably, the thickness of the nylon anticorrosive layer is not less than 0.1mm.

Preferably, the copper foil layer has a thickness of 5 μm to 10 μm.

The utility model has the advantages as follows:

1. the inner moisture-proof layer and the outer moisture-proof layer of the fluororubber have excellent moisture-proof and water-blocking performances, effectively prevent moisture from diffusing to the insulating layer, greatly delay the water tree aging phenomenon of the insulating layer, and ensure stable and reliable electrical insulation characteristics, better voltage resistance and durable use of the cable.

2. The silane grafted crosslinked low-density polyethylene insulating layer has a small static friction coefficient, is beneficial to improving the flexibility and the bending resistance of an insulating wire core, enables an insulating cable to better bear lateral pressure during bending by adding the para-type wholly aromatic copolyamide tensile fiber core material, ensures that the lateral pressure cannot be easily transmitted to an inner conductor of the insulating wire core, is beneficial to improving the bending resistance, has high tensile elastic modulus of the para-type wholly aromatic copolyamide tensile fiber core material, is beneficial to improving the tensile resistance and the bending resistance, reduces the deformation and the wire breakage and core breakage phenomena of the inner conductor, improves the electrical performance of the cable, and has better durability and usability.

3. Through increase AFRP around the covering in the cable core outside, aramid fiber twisted wire has high strength, high modulus, prevents that the cable core is loose, makes the pliability of cable core better, improves the holistic tensile strength of cable core.

4. Set up PET resin area between dampproofing course and the copper foil layer in the fluororubber and indulge a packet inoxidizing coating, copper foil layer and inoxidizing coating form a body structure, and when the cable suffered the bending, produce corresponding friction of sliding between the dampproofing course in inoxidizing coating and the fluororubber to the effectual copper foil layer that prevents produces is full of cracks, guarantees the electrical characteristics of cable, and durable use is better.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.

In the figure: the composite material comprises 1-an insulating wire core, 2-para-type wholly aromatic copolyamide drawn fiber core materials, 3-single-stranded aramid twisted wires, 4-fluororubber inner moisture-proof layers, 5-PET resin tape longitudinal wrapping protective layers, 6-copper foil layers, 7-nylon anticorrosive layers, 8-fluororubber outer moisture-proof layers, 9-silane grafted crosslinked high-density polyethylene outer protective sleeves, 10-inner conductors and 11-silane grafted crosslinked low-density polyethylene insulating layers.

Detailed Description

In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

Referring to fig. 1, the water-blocking small-diameter multicore insulated cable according to the embodiment of the present invention includes a plurality of insulated cores 1 and a para-type wholly aromatic copolyamide drawn fiber core 2, which are twisted together to form a cable core, and the insulated cores 1 are spaced apart from each other by the para-type wholly aromatic copolyamide drawn fiber core 2, and further, the spaced apart distance between the insulated cores 1 is 0.1mm to 0.3mm. The outer diameter of the insulated wire core 1 is 0.12mm to 0.18mm. The insulated wire core 1 comprises an inner conductor 10 and a silane grafted cross-linked low-density polyethylene insulated layer 11, and specifically, the inner conductor 10 is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.03 mm.

The cable core outside cladding has AFRP in proper order around covering, fluororubber in dampproof course 4, PET resin area indulge a packet inoxidizing coating 5, copper foil layer 6, nylon anticorrosive coating 7, the outer dampproof course 8 of fluororubber and silane grafting crosslinking high density polyethylene oversheath 9. AFRP is around the covering for 3 spirals of single strand aramid fiber twist constitute and around two to four times that the distance is the cable core external diameter, specific saying so, the line footpath of single strand aramid fiber twist 3 is 0.06mm to 0.1mm, the spiral angle of single strand aramid fiber twist 3 is 40 degrees to 55 degrees. Preferably, the thickness of the fluororubber inner moisture barrier layer 4 and the fluororubber outer moisture barrier layer 8 is 0.2mm to 1mm. The outer diameter of the silane grafted crosslinked high-density polyethylene outer sheath 9 is 1.8mm to 4.2mm. Preferably, the outer sheath 9 of the silane grafted crosslinked high density polyethylene has a thickness of 0.5mm to 2.2mm. In one embodiment, the PET resin tape is plated on the outer surface of the protective layer 5 to form the copper foil layer 6, and further, the thickness of the copper foil layer 6 is 5 μm to 10 μm. The thickness of the nylon anticorrosive layer 7 is not less than 0.1mm.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.

Claims

1. Thin footpath multicore insulated cable of waterproofing type, characterized by: including a plurality of insulation core (1) and counterpoint type whole aromatic copolyamide tensile fiber core (2) transposition jointly constitute the cable core, pass through between insulation core (1) counterpoint type whole aromatic copolyamide tensile fiber core (2) keep spacing distance, the cable core outside cladding in proper order has AFRP to indulge package inoxidizing coating (5), copper foil layer (6), nylon anticorrosive coating (7), fluororubber outer moisture barrier (8) and silane grafting crosslinking high density polyethylene oversheath (9) around covering, in fluororubber, the external diameter of insulation core (1) is 0.12mm to 0.18mm, insulation core (1) includes inner conductor (10) and silane grafting crosslinking low density polyethylene insulating layer (11), AFRP is single-stranded aramid fiber (3) spiral around the covering and constitutes and around two to four times that the distance is the cable core external diameter, silane grafting crosslinking high density polyethylene oversheath (9) external diameter is 1.8mm to 4.2mm.

2. The water-blocking type small-diameter multicore insulated cable according to claim 1, wherein: the spacing distance between the insulated wire cores (1) is 0.1mm to 0.3mm.

3. The water-blocking type small-diameter multicore insulated cable according to claim 1, characterized in that: the inner conductor (10) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.03 mm.

4. The water-blocking type small-diameter multicore insulated cable according to claim 1, characterized in that: the diameter of the single-stranded aramid twisted wire (3) is 0.06 mm-0.1 mm.

5. The water-blocking type small-diameter multicore insulated cable according to claim 1, wherein: the spiral angle of the single-stranded aramid twisted wire (3) is 40-55 degrees.

6. The water-blocking type small-diameter multicore insulated cable according to claim 1, characterized in that: the thickness of the silane grafted cross-linked high-density polyethylene outer sheath (9) is 0.5 mm-2.2 mm.

7. The water-blocking type small-diameter multicore insulated cable according to claim 1, wherein: the thickness of the fluororubber inner moisture-proof layer (4) and the thickness of the fluororubber outer moisture-proof layer (8) are both 0.2mm to 1mm.

8. The water-blocking type small-diameter multicore insulated cable according to claim 1, characterized in that: and the outer surface of the PET resin tape longitudinal covering protective layer (5) is plated with the copper foil layer (6).

9. The water-blocking type small-diameter multicore insulated cable according to claim 1, characterized in that: the thickness of the nylon anticorrosive layer (7) is not less than 0.1mm.

10. The water-blocking type small-diameter multicore insulated cable according to claim 1, characterized in that: the thickness of the copper foil layer (6) is 5-10 mu m.