CN217086191U

CN217086191U - Anti-core-breaking and anti-signal-crosstalk multi-core communication cable

Info

Publication number: CN217086191U
Application number: CN202220292868.3U
Authority: CN
Inventors: 江平; 黄建卫; 蔡长威; 刘书鑫
Original assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Current assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-29
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a prevent disconnected core and prevent signal crosstalk multicore communication cable, keep apart the core frame including four pair twist sinle silks and cross, four pair twist sinle silks keep apart core frame circumference through the cross and each other for 90 degrees separate arrange and common transposition formation cable cores, the pair twist sinle silk is two insulation core pair twists and constitutes, four pair twist sinle silk lay lengths are 7mm to 15mm and diverse, four pair twist sinle silks hank are the same to the homogeneous phase, the cross is kept apart the core frame and is included cross polyethylene resin core support body and aluminium-plastic composite tape around package internal shield layer, the outside cladding of cable core has ETFE resin around the covering in proper order, aluminium-plastic composite tape is around package external shield layer, copper line shielding winding layer and silane grafting crosslinking high density polyethylene oversheath. The pair-twisted wire core of the cable has better flexibility and bending resistance, the phenomenon of wire breaking and core breaking is not easy to occur, the crosstalk between the pair-twisted wire cores can be effectively inhibited, and the electrical characteristic of stable work of the cable is guaranteed.

Description

Anti-core-breaking and anti-signal-crosstalk multi-core communication cable

Technical Field

The application relates to the technical field of cables, in particular to a core breaking and signal crosstalk prevention multi-core communication cable.

Background

The communication cable is used for forming a channel for transmitting information to form a four-way and eight-way communication network. The method can be distinguished according to the aspects of laying, operating conditions, transmission frequency spectrum, cable core structure, insulating materials and the like. Among them, twisted pair cables are one of the most commonly used wiring materials for integrated wiring, and are widely used in data communication networks. The cable is composed of two copper wires with insulating protective layers, and the copper wires are twisted according to a certain pitch, so that the degree of signal interference can be reduced, and the electric wave radiated by each wire in transmission can be counteracted by the electric wave emitted by the other wire. Twisted pairs are classified into unshielded twisted pairs and shielded twisted pairs. Shielded wiring systems have been recognized by more and more users, and their good performance in terms of electromagnetic compatibility is also being recognized by more users. Under normal operating environment, because direct contact between the pair twist sinle silk, can not fully restrain the crosstalk between the pair twist sinle silk, cause the shielding performance of cable unstable. In addition, in the laying and installation process, due to bending, core breaking and wire breaking are easy to occur, so that the electrical characteristics are unstable, and the normal operation is influenced.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a prevent disconnected core and prevent signal crosstalk multicore communication cable, and the pair twist sinle silk has better pliability and resistant bending property, is difficult for taking place disconnected line disconnected core phenomenon, and shielding property is stable, can effectively restrain the electric characteristic of crosstalk between the pair twist sinle silk, guarantee cable stabilization work.

The present application solves the above-mentioned problems by the following technical solutions.

Prevent disconnected core and prevent signal crosstalk multicore communication cable, including four pair twist sinle silks and cross isolation core frame, four pair twist sinle silks pass through cross isolation core frame circumference is each other for 90 degrees separate arrange and jointly transposition formation cable core, pair twist sinle silk is that two insulation core pair twists constitute, insulation core includes inner conductor and XLPE insulating layer, the inner conductor constitutes for a plurality of tin-plated copper monofilament transposition with one heart, tin-plated copper monofilament twist to with insulation core twist to opposite, four pair twist sinle silk lay pitches are 7mm to 15mm and diverse, four pair twist sinle silk twist are the same to the homogeneous phase, cross isolation core frame includes cross polyethylene resin core support body and cladding in the outside compound area of cross polyethylene resin core support body is around package inner shield layer, the outside of cable core is wrapped in proper order has ETFE resin layer, compound area of aluminium-plastic outer shield layer, A copper wire shielding winding layer and a silane grafted cross-linked high-density polyethylene outer sheath.

Preferably, an insulating lubricating silicone grease is filled between the inner conductor and the XLPE insulating layer.

Preferably, the diameter of the tin-plated copper monofilament is 0.01mm to 0.04 mm.

Preferably, the inner aluminum-plastic composite tape lapping shielding layer is of an aluminum-plastic composite tape unidirectional spiral lapping and covering lapping structure, and the outer aluminum-plastic composite tape lapping shielding layer is of an aluminum-plastic composite tape gap lapping structure.

Preferably, the aluminum-plastic composite belt comprises an outer aluminum foil layer and an inner PET film layer.

Preferably, the ETFE resin wrapping layer is an ETFE resin belt one-way spiral lapping and covering wrapping structure.

Preferably, the copper wire shielding winding layer is formed by spirally winding an inner layer tinned copper wire and an outer layer tinned copper wire in a reverse direction, and the winding distances of the inner layer tinned copper wire and the outer layer tinned copper wire are different.

Preferably, the wire diameter of the inner layer tinned copper wire is 0.02mm to 0.05mm, the wire diameter of the outer layer tinned copper wire is 0.04mm to 0.08mm, and the wire diameter of the inner layer tinned copper wire is smaller than the wire diameter of the outer layer tinned copper wire.

Preferably, the lay length of the cable core is 10 times to 30 times of the outer diameter of the twisted pair wire core.

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

The beneficial effect of this application:

1. the inner conductor constitutes for the concentric transposition of tinned copper monofilament, and the tinned copper monofilament hank is to opposite with the insulating sinle silk hank, can reduce the monofilament torsional stress of tinned copper, it warp to restrain the monofilament, keep sliding clearance through insulating lubricated silicone grease, the inner conductor can be better bear the lateral pressure when crooked, better pliability and electrical characteristic have, difficult emergence disconnected core broken string, four pair twist sinle silk hank apart from diverse, and four pair twist sinle silks hank are the same to the homogeneous phase, help slowing down the local stress concentration of pair twist sinle silk, the improvement cable core stability, it takes place to restrain the disconnected core broken string of inner conductor, and the durability is better.

2. Four pair twist wire cores are separated through the cross-shaped isolation core frame and are arranged, the cable core structure is balanced, the aluminum-plastic composite belt is wrapped on the inner shielding layer, so that the pair twist wire cores are shielded mutually, and signal crosstalk between the pair twist wire cores is effectively inhibited.

3. Through the outer shielding layer of the aluminum-plastic composite tape wrapping, the copper wire shielding winding layer effectively inhibits internal signals or noise from leaking to the outside and inhibits interference from external signals, the ETFE resin wrapping layer can effectively inhibit the phenomenon of unsmooth appearance of the aluminum-plastic composite tape wrapping outer shielding layer, and then the stability of the shielding characteristic is enhanced.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Description of reference numerals:

the cable comprises 1-twisted wire cores, 2-cross isolation core frames, 3-insulation wire cores, 4-inner conductors, 5-XLPE insulation layers, 6-cross polyethylene resin core frame bodies, 7-aluminum-plastic composite tape lapping inner shielding layers, 8-ETFE resin lapping layers, 9-aluminum-plastic composite tape lapping outer shielding layers, 10-copper wire shielding winding layers and 11-silane grafted cross-linked high-density polyethylene outer sheaths.

Detailed Description

The terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the application, as the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the anti-core-breaking and anti-signal-crosstalk multi-core communication cable of the embodiment of the application comprises four twisted-pair wire cores 1 and a cross-shaped isolation core frame 2, wherein the four twisted-pair wire cores 1 pass through the cross-shaped isolation core frame 2 circumferential directions are separated from each other by 90 degrees and are twisted together to form a cable core, and the lay length of the cable core is 10 times to 30 times of the outer diameter of the twisted-pair wire core 1. The pair-twisted wire core 1 is formed by twisting two insulating wire cores 3 in pairs, each insulating wire core 3 comprises an inner conductor 4 and an XLPE insulating layer 5, each inner conductor 4 is formed by concentrically twisting a plurality of tinned copper monofilaments, specifically, the diameter of each tinned copper monofilament is 0.01mm to 0.04mm, and further, insulating lubricating silicone grease is filled between each inner conductor 4 and each XLPE insulating layer 5. The twisting direction of the tin-plated copper single wires is opposite to that of the insulated wire core 3. The twisting distance of the four twisted wire cores 1 is 7mm to 15mm and different, and the twisting directions of the four twisted wire cores 1 are the same. The cross isolation core frame 2 includes that cross polyethylene resin core support body 6 and cladding are in the outside aluminium-plastic composite belt of cross polyethylene resin core support body 6 winds package internal shield layer 7, and specific theory, aluminium-plastic composite belt winds package internal shield layer 7 and takes the lid around the package structure for the one-way spiral in aluminium-plastic composite belt, and is further, aluminium-plastic composite belt includes aluminium foil skin and PET film inlayer.

The outside of cable core is in proper order wrapped with ETFE resin around covering 8, aluminium-plastic composite tape around covering external shielding layer 9, copper line shielding winding layer 10 and silane grafting crosslinking high density polyethylene oversheath 11. In one embodiment, the ETFE resin wrapping layer 8 is an ETFE resin tape one-way spiral lapping and wrapping structure. In one embodiment, the aluminum-plastic composite tape wrapping outer shielding layer 9 is of an aluminum-plastic composite tape gap wrapping structure, and further, the aluminum-plastic composite tape comprises an aluminum foil outer layer and a PET film inner layer. In an embodiment, copper line shielding winding layer 10 is that inside and outside double-deck tinned wire each other is reverse spiral winding and forms, and inner tinned wire is different with outer tinned wire's winding distance, and is further, inner tinned wire line footpath is 0.02mm to 0.05mm, outer tinned wire line footpath is 0.04mm to 0.08mm, inner tinned wire line footpath is less than outer tinned wire line footpath. The thickness of the silane grafted cross-linked high-density polyethylene outer sheath 11 is 0.5 mm-2.2 mm.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application.

Claims

1. Prevent disconnected core and prevent signal crosstalk multicore communication cable, characterized by: the cable comprises four pair-twisted wire cores (1) and a cross isolation core frame (2), wherein the four pair-twisted wire cores (1) pass through the cross isolation core frame (2) and are circumferentially arranged at 90 degrees in a separated manner and are twisted together to form a cable core, the pair-twisted wire cores (1) are formed by twisting two insulation wire cores (3), each insulation wire core (3) comprises an inner conductor (4) and an XLPE (cross aluminum-plastic) insulation layer (5), each inner conductor (4) is formed by concentrically twisting a plurality of tin-plated copper monofilaments, the twisting direction of the tin-plated copper monofilaments is opposite to that of the insulation wire cores (3), the twisting distances of the four pair-twisted wire cores (1) are 7mm to 15mm and different, the twisting directions of the four pair-twisted wire cores (1) are the same, and the cross isolation core frame (2) comprises a cross polyethylene resin core frame body (6) and an aluminum-plastic composite tape inner shielding layer (7) coated outside the cross polyethylene resin core frame body (6), the cable comprises a cable core and is characterized in that an ETFE resin wrapping layer (8), an aluminum-plastic composite tape wrapping outer shielding layer (9), a copper wire shielding winding layer (10) and a silane grafted cross-linked high-density polyethylene outer sheath (11) are sequentially wrapped outside the cable core.

2. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: and an insulating lubricating silicone grease is filled between the inner conductor (4) and the XLPE insulating layer (5).

3. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: the diameter of the tin-plated copper monofilament is 0.01mm to 0.04 mm.

4. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: the aluminum-plastic composite tape wrapping inner shielding layer (7) is of an aluminum-plastic composite tape one-way spiral lapping and covering wrapping structure, and the aluminum-plastic composite tape wrapping outer shielding layer (9) is of an aluminum-plastic composite tape gap wrapping structure.

5. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 4, wherein: the aluminum-plastic composite belt comprises an aluminum foil outer layer and a PET film inner layer.

6. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: the ETFE resin lapping layer (8) is an ETFE resin belt one-way spiral lapping and covering lapping structure.

7. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: copper line shielding winding layer (10) are that inside and outside double-deck tinned wire is mutual reverse spiral winding and forms, and the winding distance of inlayer tinned wire and outer tinned wire is different.

8. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 7, wherein: the inner layer tinned wire line footpath is 0.02mm to 0.05mm, outer tinned wire line footpath is 0.04mm to 0.08mm, inner layer tinned wire line footpath is less than outer tinned wire line footpath.

9. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: the lay length of the cable core is 10 times to 30 times of the outer diameter of the twisted pair wire core (1).

10. The core breakage and signal crosstalk preventing multi-core communication cable according to claim 1, wherein: the thickness of the silane grafted cross-linked high-density polyethylene outer sheath (11) is 0.5 mm-2.2 mm.