CN217086245U

CN217086245U - Light tensile multi-core shielding twisted-pair cable

Info

Publication number: CN217086245U
Application number: CN202220292865.XU
Authority: CN
Inventors: 屠渭江; 王成旺; 李清华; 吴英俊; 王礼国
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 two twisted cable of tensile multicore shielding of lightweight, 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 that two insulation core pair twists constitute, insulation core includes inner conductor and XLPE insulating layer, it has insulating lubricated silicone grease to fill between inner conductor and the XLPE insulating layer, the core frame is kept apart including cross PET resin core support body and cladding at the outside conductive fiber winding inner shield layer of cross PET resin core support body to the cross, the central part of cross PET resin core support body is the rhombus and strengthens the core, the outside cladding in proper order of cable core has polyester fiber plain weave around the covering, conductive fiber winding outer shield layer and polyurethane oversheath. The cable core has the advantages of balanced structure and better tensile resistance, can effectively inhibit crosstalk between twisted wire cores, and realizes light weight and light weight preparation.

Description

Light tensile multi-core shielding twisted-pair cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a tensile multicore shielding twisted cable of lightweight.

Background

Twisted pair is one of the most commonly used transmission media in integrated wiring engineering. 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. When the multi-core twisted-pair cable is cabled, each pair of twisted wire cores are directly twisted in a contact mode, and crosstalk between the twisted wire cores cannot be fully inhibited. Moreover, under the development trend of preparation with small diameter and light weight, the stability of the shielding performance is ensured, meanwhile, the balance of the cable structure is also considered, the tensile resistance is improved, and the electrical characteristics and the reliability of the stable operation of the cable are ensured.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a two twisted cable of tensile multicore shielding of lightweight, and the cable core structure is balanced, and stretch-proofing performance is better, and shielding property is stable, can effectively restrain the crosstalk between the pair twist core, and the electrical characteristics of guarantee cable steady operation realizes light lightweight preparation.

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

Light tensile multicore shielding twisted pair cable, keep apart the core frame including four pair twist sinle silks and cross, four pair twist sinle silks pass through the cross is kept apart core frame circumference and is each other for 90 degrees to separate and arrange and jointly strand and form the cable core, the pair twist sinle silk constitutes for two insulation core pair twists, insulation core includes inner conductor and XLPE insulating layer, the inner conductor with it has insulating and lubricating silicone grease to fill between the XLPE insulating layer, the cross is kept apart the core frame and is included cross PET resin core support body and cladding the outside conductive fiber winding inner shield layer of cross PET resin core support body, the central part of cross PET resin core support body is the rhombus and strengthens the core, the outside cladding in proper order of cable core has polyester fiber plain weave layer, conductive fiber winding outer shield layer and polyurethane oversheath.

Preferably, the inner conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04 mm.

Preferably, the conductive fiber winding inner shielding layer is a conductive fiber stranded wire spiral winding structure, the weaving density is 90-95%, the conductive fiber stranded wire is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating the polyacrylonitrile-based carbon fibers with a copper conductive coating, and the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 μm.

Preferably, the thickness of the conductive fiber winding inner shielding layer is 0.1mm to 0.2 mm.

Preferably, the conductive fiber winding outer shielding layer is a cylindrical supporting net body formed by lapping and weaving an inner aramid fiber twisted wire and an outer aramid fiber twisted wire in a reverse spiral mode, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

Preferably, the thickness of the conductive fiber wound outer shielding layer is 0.2mm to 0.5 mm.

Preferably, the polyester fiber plain weave lapping layer is of a polyester fiber plain weave one-way spiral lapping and covering lapping structure.

Preferably, the wrapping layer thickness of the polyester fiber plain woven cloth is 0.1mm to 0.3 mm.

Preferably, the lay length of the cable core is 10 times to 20 times of the outer diameter of the twisted pair wire core.

Preferably, the polyurethane outer sheath has a thickness of 0.5mm to 2.2 mm.

The utility model has the advantages that:

1. four pair twist sinle silks are separated through the cross isolation core frame and are arranged, the cable core structure is balanced, and make mutual shielding between the pair twist sinle silks through conductive fiber winding internal shield layer, the effectual crosstalk that suppresses between the pair twist sinle silks, the interference that internal signal or noise leakage to outside and suppression come from external signal are effectively suppressed to rethread conductive fiber winding external shield layer, the stable shielding performance of guarantee cable, the reliability of improvement cable steady operation.

2. The central part of the cross-shaped PET resin core frame body is a rhombic reinforcing core body, so that the tensile resistance is improved, the local stress concentration of each twisted wire core conductor is reduced, the deformation and the wire breakage of the inner conductor are prevented, the reliable electrical characteristics of the cable are ensured, and the service life is prolonged.

3. The conductive fiber winding inner shielding layer and the conductive fiber winding outer shielding layer effectively replace a metal material shielding layer, so that the weight is reduced, the cost is reduced, and the production and preparation of thin and light products are realized on the basis of ensuring the stable shielding performance. The conductive fiber wound outer shielding layer is a cylindrical supporting net body formed by weaving inner and outer double-layer aramid twisted yarns, and has high strength and high modulus, so that the flexibility of the cable is better, and the tensile resistance is improved. The conductive fiber bundles are distributed on the supporting net body, are formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, can effectively inhibit interference from external signals, and ensure stable shielding performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

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

Reference numerals: the cable comprises 1-twisted wire core, 2-cross isolation core frame, 3-insulation wire core, 4-inner conductor, 5-XLPE insulation layer, 6-cross PET resin core frame body, 7-conductive fiber winding inner shielding layer, 8-diamond reinforcing core body, 9-polyester fiber plain weave wrapping layer, 10-conductive fiber winding outer shielding layer and 11-polyurethane outer sheath.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses two twisted cable of tensile multicore shielding of lightweight, keep apart core frame 2 including four pair twist sinle silks 1 and cross, four pair twist sinle silks 1 pass through core frame 2 circumference is kept apart to the cross each other for 90 degrees separate arrange and common transposition formation cable core, the lay length of cable core does 10 times to 20 times of 1 external diameters of pair twist sinle silks. 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, insulating lubricating silicone grease is filled between each inner conductor 4 and each XLPE insulating layer 5, and specifically, each inner conductor 4 is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameters of 0.01mm to 0.04 mm. The cross isolation core frame 2 comprises a cross PET resin core frame body 6 and a conductive fiber winding inner shielding layer 7 coated outside the cross PET resin core frame body 6, and the central part of the cross PET resin core frame body 6 is a diamond-shaped reinforcing core body 8. Specifically, the conductive fiber winding inner shielding layer 7 is a conductive fiber stranded wire spiral winding structure, the weaving density is 90% to 95%, the conductive fiber stranded wire is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating the polyacrylonitrile-based carbon fibers with a copper conductive coating, the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 micrometers, and further, the thickness of the conductive fiber winding inner shielding layer 7 is 0.1mm to 0.2 mm.

The outside of cable core is wrapped in proper order and is had polyester fiber plain weave around covering 9, conductive fiber winding outer shielding layer 10 and polyurethane oversheath 11. In one embodiment, the polyester fiber plain weave lapping layer 9 is a polyester fiber plain weave unidirectional spiral lapping and lapping structure, and further, the thickness of the polyester fiber plain weave lapping layer 9 is 0.1mm to 0.3 mm. In one embodiment, the outer shielding layer 10 of conductive fiber winding is that inside and outside double-deck aramid fiber twists the line and twines for reverse spiral each other around the package and weave formation cylinder support dictyosome, evenly cloth is equipped with a plurality of conductive fiber bundles in circumference on the support dictyosome, conductive fiber bundle is that a plurality of polyacrylonitrile base carbon fiber strand and coats copper conductive coating and form, and is further, conductive fiber winding outer shielding layer 10 thickness is 0.2mm to 0.5 mm. The polyurethane outer sheath 11 is 0.5mm to 2.2mm thick.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A lightweight stretch-resistant multi-core shielding twisted-pair cable is characterized in that: including four pair twist sinle silk (1) and cross isolation core frame (2), four pair twist sinle silk (1) are passed through cross isolation core frame (2) circumference is for 90 degrees each other and separate and arrange and jointly strand and form the cable core, pair twist sinle silk (1) are two insulation core (3) pair twist and constitute, insulation core (3) include inner conductor (4) and XLPE insulating layer (5), inner conductor (4) with it has insulating lubricated silicone grease to fill between XLPE insulating layer (5), cross isolation core frame (2) include cross PET resin core support body (6) and cladding in the outside conductive fiber winding inner shield layer (7) of cross PET resin core support body (6), the central part of cross PET resin core support body (6) is rhombus around the core (8), the outside of cable core has polyester fiber plain weave layer (9) to wrap in proper order, The conductive fiber is wound on the outer shielding layer (10) and the polyurethane outer sheath (11).

2. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the inner conductor (4) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.01mm to 0.04 mm.

3. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the conductive fiber winding inner shielding layer (7) is of a conductive fiber stranded wire spiral winding structure, the weaving density is 90% -95%, the conductive fiber stranded wire is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating the polyacrylonitrile-based carbon fibers with a copper conductive coating, and the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 microns.

4. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 3, wherein: the thickness of the conductive fiber winding inner shielding layer (7) is 0.1mm to 0.2 mm.

5. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the outer shielding layer (10) of conductive fiber winding is that inside and outside double-deck aramid fiber twisted wire is each other for reverse spiral around the package to weave formation cylinder support dictyosome, evenly be equipped with a plurality of conductive fiber bundles in circumference on the support dictyosome, conductive fiber bundle is that a plurality of polyacrylonitrile base carbon fiber strand and scribble copper conductive coating and form.

6. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 5, wherein: the thickness of the conductive fiber winding outer shielding layer (10) is 0.2mm to 0.5 mm.

7. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the polyester fiber plain weave lapping layer (9) is of a polyester fiber plain weave unidirectional spiral lapping and covering lapping structure.

8. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the thickness of the polyester fiber plain weave fabric lapping layer (9) is 0.1mm to 0.3 mm.

9. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the lay length of the cable core is 10 times to 20 times of the outer diameter of the twisted pair wire core (1).

10. The lightweight stretch-resistant multi-core shielded twisted pair cable of claim 1, wherein: the thickness of the polyurethane outer sheath (11) is 0.5mm to 2.2 mm.