CN217086241U - Light shielding enhanced multi-core control cable - Google Patents

Abstract

The utility model discloses a light shielding enhancement mode multicore control cable, including the control sinle silk, the control sinle silk includes that two insulation core pair twist construct the line core, insulation core includes inner conductor and XLPE insulating layer, the sinle silk outside cladding has compound winding layer of iron powder polypropylene resin and conductive fiber winding inner shield layer in proper order, it has iron powder polypropylene resin to fill the core to fill between line core and the compound winding layer of iron powder polypropylene resin, a plurality of difference signal sinle silk forms the cable core around the outside equipartition of conductive fiber winding inner shield layer, the difference signal sinle silk includes difference signal conductor and foaming polyethylene insulating layer, the outside cladding of cable core has polyester fiber plain weave around the covering, conductive fiber winding outer shield layer and polyurethane oversheath. The cable is prepared on the basis of light weight and light weight, the cable structure is balanced, the shielding performance is excellent, the anti-noise interference capability is strong, the signal transmission characteristic is stable, and the working stability and reliability of the cable are ensured.

Description

Light shielding enhanced multi-core control cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a lightweight shielding enhancement mode multicore control cable.

Background

The control cable is used as a connecting line between various electrical appliances, instruments, meters and automatic devices, plays a role in transmitting various electric energy signals such as starting, operation, control, signal display, measurement and the like, and is widely applied to control, measurement, signal transmission, alarm and interlocking systems of departments such as industrial and mining enterprises, transformer substations, traffic, science and technology and the like. Electromagnetic noise environments tend to be quite complex in industrial applications, and the radiation or conduction (EMI) of electromagnetic noise can significantly interfere with the proper operation of the equipment. In this process, an important carrier for electromagnetic noise propagation is various cables used in production line equipment. Some of them are noise sources and some are disturbed objects. One very important way to combat electromagnetic noise interference on electrical lines is to use shielded cables. In shielded cable, low pressure differential signal sinle silk is usually arranged in pairs to the transmission difference signal, however, the low pressure differential signal sinle silk adopts flat differential signal sinle silk more, and the major and minor axis proportion design of differential signal sinle silk is unfavorable for the preparation of thin footpath, and the cable structure equilibrium is poor, and signal transmission characteristic is unstable, and then influences the electrical characteristics of cable.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a lightweight shielding enhancement mode multicore control cable, based on light lightweight preparation, cable structure is balanced, and shielding performance is excellent, and anti noise interference ability is strong, and signal transfer characteristic is stable, guarantees the stability and the reliability of cable work.

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

The light shielding reinforced multi-core control cable comprises a control wire core, wherein the control wire core comprises a wire core body formed by twisting two insulated wire cores in pairs, the insulated wire core comprises an inner conductor and an XLPE insulated layer, an iron powder polypropylene resin composite winding layer and a conductive fiber winding inner shielding layer are sequentially coated outside the wire core body, iron powder polypropylene resin filling core materials are filled between the wire core bodies and the iron powder polypropylene resin composite winding layers, a plurality of differential signal wire cores are uniformly distributed around the outer part of the conductive fiber winding inner shielding layer to form a cable core, the differential signal wire core comprises a differential signal conductor and a foamed polyethylene insulating layer, the outside of the cable core is coated with a polyester fiber plain weave lapping layer, a conductive fiber lapping outer shielding layer and a polyurethane outer sheath, the differential signal sinle silk external diameter is 1mm to 1.5mm, insulating sinle silk external diameter is 1.5 times to 2 times of differential signal sinle silk external diameter.

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

Preferably, the inner conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.05mm to 0.08 mm.

Preferably, an insulating grease is filled between the differential signal conductor and the foamed polyethylene insulating layer.

Preferably, the differential signal conductor is formed by twisting a plurality of tinned copper wires with the diameter of 0.02mm to 0.04mm and a plurality of para-type wholly aromatic copolyamide drawn fibers.

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, the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 micrometers, and the wire diameter of the conductive fiber stranded wire is 0.1 mm-0.16 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 not less than 0.3 mm.

Preferably, the iron powder polypropylene resin composite winding layer is of an iron powder resin composite belt one-way spiral lapping and covering wrapping structure.

Preferably, the polyester fiber plain cloth wrapping layer is of a polyester fiber plain cloth spiral wrapping structure and has a thickness of 0.1mm to 0.3 mm.

The utility model has the advantages that:

1. through arranging the control core in cable core central part to adopt coaxial sinle silk structure's differential signal sinle silk equipartition outside the control core, keep the circular cross-section of cable, make cable structure balanced stable, lateral pressure when helping to bear the bending slows down lateral pressure and extrusion force when each sinle silk bears the bending, helps alleviating the inside stress concentration of cable core, reduces each sinle silk broken string core emergence, ensures the job stabilization nature and the fail safe nature of cable.

2. The control sinle silk is inside to be filled there is iron powder polypropylene resin and to fill the core to form shielding conductor jointly with iron powder polypropylene resin composite winding layer and conductive fiber winding internal shield layer, strengthened shielding property greatly, the interference killing feature is stronger, iron powder polypropylene resin composite winding layer helps reducing the stress concentration on conductive fiber winding internal shield layer, reduces the moment of torsion, conductive fiber winding internal shield layer effectively replaces the metal shielding layer, it is required to realize light lightweight preparation.

3. The conductive fiber winding inner shield layer and the conductive fiber winding outer shield layer form interlayer shielding, the shielding effect is enhanced, the signal crosstalk phenomenon between the wire cores is greatly weakened, the anti-interference capability is improved, the differential signal transmission rate and the signal transmission stability are ensured, and the stable electrical characteristics of the cable are powerfully ensured. The conductive fiber winding outer shielding layer is a cylindrical supporting net body formed by weaving inner and outer double-layer aramid twisted yarns, has high strength and high modulus, enables the flexibility of the cable to be better, is provided with conductive fiber bundles, is formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, can effectively replace a metal material shielding layer, reduces the weight and the cost on the basis of ensuring the stable shielding performance, and realizes the production with thin diameter and light weight.

4. The control sinle silk and the inside lubricated silicone grease of difference signal sinle silk of adding make the conductor obtain abundant antifriction effect, improve the pliability, can effectually prevent conductor broken string disconnected core phenomenon, ensure stable electrical characteristics, durable use is better.

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 a control wire core, a 2-insulation wire core, a 3-inner conductor, a 4-XLPE insulation layer, a 5-iron powder polypropylene resin filled core material, a 6-iron powder polypropylene resin composite winding layer, a 7-conductive fiber winding inner shielding layer, an 8-differential signal wire core, a 9-polyester fiber plain weave winding layer, a 10-conductive fiber winding outer shielding layer, an 11-polyurethane outer sheath, a 12-differential signal conductor and a 13-foamed polyethylene insulation layer.

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 lightweight shielding enhancement mode multicore control cable, including control core 1, control core 1 includes that two insulation core 2 pairs twist construct the line core body, insulation core 2 includes inner conductor 3 and XLPE insulating layer 4, and is further, inner conductor 3 with it has insulating lubricating grease to fill between XLPE insulating layer 4. Specifically, the inner conductor 3 is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.05mm to 0.08 mm. The wire core body is sequentially coated with an iron powder polypropylene resin composite winding layer 6 and a conductive fiber winding inner shielding layer 7, and an iron powder polypropylene resin filling core material 5 is filled between the wire core body and the iron powder polypropylene resin composite winding layer 6. In one embodiment, the iron powder polypropylene resin composite winding layer 6 is an iron powder resin composite tape one-way spiral lapping and wrapping structure. In one embodiment, the conductive fiber wound 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 twisting 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 μm, and the wire diameter of the conductive fiber stranded wire is 0.1mm to 0.16 mm.

And a plurality of differential signal wire cores 8 are uniformly distributed around the outer part of the conductive fiber winding inner shielding layer 7 to form a cable core. The differential signal wire core 8 comprises a differential signal conductor 12 and a foamed polyethylene insulating layer 13, and further, insulating lubricating grease is filled between the differential signal conductor 12 and the foamed polyethylene insulating layer 13. Specifically, the differential signal conductor 12 is formed by twisting a plurality of tinned copper wires with the diameter of 0.02mm to 0.04mm and a plurality of para-type wholly aromatic copolyamide drawn fibers. The external diameter of the differential signal wire core 8 is 1mm to 1.5mm, and the external diameter of the insulated wire core 2 is 1.5 times to 2 times of the external diameter of the differential signal wire core 8.

The cable core is coated with a polyester fiber plain weave lapping layer 9, a conductive fiber winding outer shielding layer 10 and a polyurethane outer sheath 11. In one embodiment, the polyester fiber plain cloth wrapping layer 9 is a polyester fiber plain cloth spiral wrapping structure and has a thickness of 0.1mm to 0.3 mm. In one embodiment, the conductive fiber wound outer shielding layer 10 is formed by spirally winding and weaving an inner aramid fiber twisted wire and an outer aramid fiber twisted wire in opposite directions to form a cylindrical supporting net body, 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 a copper conductive coating. The thickness of the conductive fiber wound outer shielding layer 10 is not less than 0.3 mm.

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 (10)

1. Lightweight shielding enhancement mode multicore control cable, characterized by: the cable comprises a control wire core (1), wherein the control wire core (1) comprises two insulation wire cores (2) which are twisted in pairs to form a wire core body, the insulation wire cores (2) comprise an inner conductor (3) and an XLPE (cross linked polyethylene) insulation layer (4), an iron powder polypropylene resin composite winding layer (6) and a conductive fiber winding inner shielding layer (7) are sequentially coated outside the wire core body, an iron powder polypropylene resin filling core material (5) is filled between the wire core body and the iron powder polypropylene resin composite winding layer (6), a plurality of differential signal wire cores (8) surround the conductive fiber winding inner shielding layer (7) and are uniformly distributed to form a cable core, each differential signal wire core (8) comprises a differential signal conductor (12) and a foamed polyethylene insulation layer (13), a polyester fiber plain woven fabric layer (9), a conductive fiber winding outer shielding layer (10) and a polyurethane outer sheath (11) are coated outside the cable core, the differential signal sinle silk (8) external diameter is 1mm to 1.5mm, insulating sinle silk (2) external diameter is 1.5 times to 2 times of differential signal sinle silk (8) external diameter.

2. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: and insulating lubricating grease is filled between the inner conductor (3) and the XLPE insulating layer (4).

3. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: the inner conductor (3) is formed by concentrically twisting a plurality of tinned copper monofilaments with the diameter of 0.05mm to 0.08 mm.

4. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: and insulating lubricating grease is filled between the differential signal conductor (12) and the foamed polyethylene insulating layer (13).

5. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: the differential signal conductor (12) is formed by twisting a plurality of tinned copper wires with the diameter of 0.02mm to 0.04mm and a plurality of para-type wholly aromatic copolyamide drawn fibers.

6. The lightweight, shield-enhanced multi-core control 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 copper conductive coating layers, the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 micrometers, and the wire diameter of the conductive fiber stranded wire is 0.1 mm-0.16 mm.

7. The lightweight, shield-enhanced multi-core control 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.

8. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: the thickness of the conductive fiber wound outer shielding layer (10) is not less than 0.3 mm.

9. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: the iron powder polypropylene resin composite winding layer (6) is of an iron powder resin composite belt one-way spiral lapping and covering wrapping structure.

10. The lightweight, shield-enhanced multi-core control cable of claim 1, wherein: the polyester fiber plain weave fabric wrapping layer (9) is of a polyester fiber plain weave fabric spiral wrapping structure and is 0.1 mm-0.3 mm in thickness.

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