CN219553265U

CN219553265U - Attenuation-inhibiting reinforced light multi-core control cable

Info

Publication number: CN219553265U
Application number: CN202320444483.9U
Authority: CN
Inventors: 姚汪宁; 黄桂领; 王洪超; 邱金波; 王超
Original assignee: Zhejiang Zetastone Special Cable Co ltd
Current assignee: Zhejiang Zetastone Special Cable Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-08-18
Anticipated expiration: 2033-03-10

Abstract

The utility model discloses an attenuation-inhibiting reinforced light multi-core control cable, which comprises a control cable core, wherein the control cable core comprises two inner conductors which are arranged side by side at intervals and are coated in a PFA inner insulating layer together, a connecting rib is formed on a spacing section between the two inner conductors by the PFA inner insulating layer, a foaming PFA outer insulating layer, an iron powder polyethylene resin composite inner wrapping layer, a conductive fiber wrapping inner shielding layer and a ferrite film inner wrapping layer are sequentially coated outside the PFA inner insulating layer, a plurality of differential signal cable cores are uniformly distributed around the outer circumference of the ferrite film inner wrapping layer to form a cable core, and an ETFE wrapping antifriction layer, an iron powder polyethylene resin composite outer wrapping layer, a conductive fiber wrapping outer shielding layer, a ferrite film outer wrapping layer and a polyurethane outer sheath are sequentially coated outside the cable core. The cable has the advantages of strengthening and restraining signal transmission attenuation performance, being strong in noise interference resistance, guaranteeing stable shielding characteristics and being better in durability.

Description

Attenuation-inhibiting reinforced light multi-core control cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to an attenuation-inhibiting reinforced light multi-core control cable.

Background

The control cable is used as a connecting wire between various electric 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 industrial and mining enterprises, transformer stations, traffic, science and technology departments and the like. The electromagnetic noise environment of an industrial application site is often quite complex, and electromagnetic noise radiation or conduction (EMI) may severely interfere with the proper operation of the device. In this process, an important type of carrier for electromagnetic noise propagation is the various cables used in the production line equipment. Some of them are noise sources and some are disturbed objects. To combat electromagnetic noise interference on electrical lines, a very important way is to use cables with shielding. In the lightweight shielded cable construction, the shielding layer employs a conductive fiber shielding layer instead of a metallic material shielding layer. The light-weight preparation is realized, however, gaps are not formed between the conductive fiber bundles in the conductive fiber shielding layer structure, internal signals or noise and external signals are easy to pass through the gaps to cause leakage or signal interference, the signal transmission attenuation is large, the anti-interference performance is insufficient, the signal transmission characteristics are unstable, and the electrical characteristics of the cable are further affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the attenuation-inhibiting reinforced light multi-core control cable, which has the advantages of strong signal transmission attenuation inhibition, strong noise interference resistance, stable shielding characteristic and better durability on the basis of light weight preparation.

The utility model solves the technical problems through the following technical proposal.

The utility model provides a suppression attenuation enhancement mode light multicore control cable, includes the control wire core, the control wire core includes two inner conductors of side by side interval arrangement and cladding in PFA inner insulation layer jointly, PFA inner insulation layer is in be formed with the connecting rib on the interval section between two inner conductors, PFA inner insulation layer outside cladding has foaming PFA outer insulation layer, the cladding of iron powder polyethylene resin complex in, conducting fiber winding inner shield and ferrite film inner cladding in proper order, and a plurality of difference signal wire core is around the outside circumference equipartition of cladding forms the cable core in the ferrite film, the cable core outside cladding has ETFE in proper order around the cladding antifriction layer, the cladding of iron powder polyethylene resin complex outer cladding, conducting fiber winding outer shield, ferrite film outer cladding and polyurethane oversheath.

Preferably, the ferrite film inner wrap layer and the ferrite film outer wrap layer each have a thickness of 1 μm to 8 μm.

Preferably, the differential signal wire core includes a differential signal conductor and a foamed polyethylene insulation layer.

Preferably, the differential signal conductor is formed by twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.08 mm.

Preferably, the outer diameter of the differential signal wire core is 1mm to 1.5mm.

Preferably, the inner conductor is formed by twisting a plurality of tin-plated copper monofilaments with the wire diameters of 0.01mm to 0.04 mm.

Preferably, the conductive fiber winding inner shielding layer and the conductive fiber winding outer shielding layer are cylindrical supporting net bodies formed by mutually reverse spiral winding and braiding of inner and outer double-layer aramid fiber twisting wires, a plurality of conductive fiber bundles are uniformly distributed on the supporting net bodies in the circumferential direction, and the conductive fiber bundles are formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

Preferably, the ETFE wrapping antifriction layer is an ETFE resin multilayer lapping and wrapping structure, and the thickness of the ETFE resin multilayer lapping and wrapping antifriction layer is not more than 0.1mm.

Preferably, the iron powder polyethylene resin composite inner wrapping layer and the iron powder polyethylene resin composite outer wrapping layer are both of an iron powder resin composite belt unidirectional spiral lapping and wrapping structure.

Preferably, the foamed PFA outer insulation layer is a foamed PFA resin layer having a foaming ratio of 40% to 60%.

The utility model has the beneficial effects that:

1. the three-layer shielding layer structure is formed by the iron powder polyethylene resin composite wrapping layer, the conductive fiber shielding layer and the ferrite film wrapping layer, the original metal shielding layer is replaced, light-weight preparation is realized, the ferrite film wrapping layer, such as the Ni-Zn ferrite film wrapping layer, is added outside the conductive fiber shielding layer, signal leakage caused by gaps in the conductive fiber shielding layer structure can be effectively eliminated, signal transmission attenuation is effectively restrained, anti-interference performance is improved, stable shielding effect is ensured, and durability is better.

2. In the control wire core structure inside the cable core, two side by side arranged inner conductors are coated in the PFA inner insulating layer, connecting ribs are formed between the conductors, the spacing distance between the inner conductors is effectively kept and is not easy to deform, the inner insulating layer has better mechanical strength than the foaming PFA outer insulating layer, deformation is not easy to occur in the bending bearing and inner conductor heating process, and therefore effective protection is formed on the foaming PFA outer insulating layer, and the durability is better.

3. The inner and outer shielding layers are formed by twisting and braiding the inner and outer double-layer aramid fiber yarns, the cylindrical supporting net body has high strength, high modulus and better flexibility, the conductive fiber bundles are arranged on the supporting net body and are formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, the metal shielding layers can be effectively replaced, the weight is reduced, the cost is reduced, and light and lightweight production is realized.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.

Reference numerals illustrate:

1-control wire core, 2-inner conductor, 3-PFA inner insulating layer, 4-connecting rib, 5-foaming PFA outer insulating layer, 6-iron powder polyethylene resin composite inner wrapping layer, 7-conductive fiber winding inner shielding layer, 8-ferrite film inner wrapping layer, 9-differential signal wire core, the anti-friction coating comprises a 10-ETFE wrapping anti-friction layer, a 11-iron powder polyethylene resin composite outer wrapping layer, a 12-conductive fiber wrapping outer shielding layer, a 13-ferrite film outer wrapping layer, a 14-polyurethane outer sheath, a 15-differential signal conductor and a 16-foaming polyethylene insulating layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the attenuation-inhibiting reinforced light multi-core control cable of the embodiment of the utility model comprises a control cable core 1, wherein the control cable core 1 comprises two inner conductors 2 which are arranged side by side at intervals and are jointly coated in a PFA inner insulating layer 3, the PFA inner insulating layer 3 is provided with connecting ribs 4 on a spacing section between the two inner conductors 2, and specifically, the inner conductors 2 are formed by twisting a plurality of tin-plated copper monofilaments with the wire diameters of 0.01mm to 0.04 mm. The outer part of the PFA inner insulating layer 3 is sequentially coated with a foaming PFA outer insulating layer 5, an iron powder polyethylene resin composite inner wrapping layer 6, a conductive fiber winding inner shielding layer 7 and a ferrite film inner wrapping layer 8. In one embodiment, the foamed PFA outer insulation layer 5 is a foamed PFA resin layer having a foaming ratio of 40% to 60%.

And a plurality of differential signal wire cores 9 are uniformly distributed around the outer circumference of the inner wrapping layer 8 of the ferrite film to form a cable core, and the outer diameter of each differential signal wire core 9 is 1mm to 1.5mm. In one embodiment, the differential signal wire core 9 includes a differential signal conductor 15 and a foamed polyethylene insulating layer 16, and specifically, the differential signal conductor 15 is formed by twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.08 mm.

The cable core is sequentially coated with an ETFE wrapping antifriction layer 10, an iron powder polyethylene resin composite outer wrapping layer 11, a conductive fiber wrapping outer shielding layer 12, a ferrite film outer wrapping layer 13 and a polyurethane outer sheath 14. In one embodiment, the ETFE wrapped antifriction layer 10 is an ETFE resin multilayer lapped and wrapped structure and has a thickness of no more than 0.1mm. Preferably, the thickness of the ferrite film inner wrapping layer 8 and the ferrite film outer wrapping layer 13 is 1 μm to 8 μm. In one embodiment, the conductive fiber winding inner shielding layer 7 and the conductive fiber winding outer shielding layer 12 are cylindrical supporting net bodies formed by mutually and reversely spirally wrapping and braiding double-layer aramid twisted wires, a plurality of conductive fiber bundles are uniformly distributed on the supporting net bodies in the circumferential direction, and the conductive fiber bundles are formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings. In one embodiment, the iron powder polyethylene resin composite inner wrapping layer 6 and the iron powder polyethylene resin composite outer wrapping layer 11 are both iron powder resin composite tape unidirectional spiral lapping wrapping structures.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The damping reinforced light multi-core control cable is characterized in that: including control sinle silk (1), control sinle silk (1) are including two inner conductor (2) of side by side interval arrangement and cladding jointly in PFA inner insulation layer (3), PFA inner insulation layer (3) are in be formed with connecting rib (4) on the interval section between two inner conductor (2), the outside cladding of PFA inner insulation layer (3) has foaming PFA outer insulation layer (5), iron powder polyethylene resin complex inner winding covering (6), conductive fiber winding inner shielding layer (7) and ferrite film inner winding covering (8) in proper order, and a plurality of differential signal sinle silk (9) are around ferrite film inner winding covering (8) outside circumference equipartition forms the cable core, the cable core outside cladding has ETFE winding antifriction layer (10), iron powder polyethylene resin complex outer winding covering (11), conductive fiber winding outer shielding layer (12), ferrite film outer winding covering (13) and polyurethane oversheath (14) in proper order.

2. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the thickness of the ferrite film inner wrapping layer (8) and the ferrite film outer wrapping layer (13) is 1-8 mu m.

3. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the differential signal wire core (9) comprises a differential signal conductor (15) and a foamed polyethylene insulating layer (16).

4. The attenuation-reducing reinforced lightweight multi-core control cable of claim 3, wherein: the differential signal conductor (15) is formed by twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.08 mm.

5. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the outer diameter of the differential signal wire core (9) is 1mm to 1.5mm.

6. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the inner conductor (2) is formed by twisting a plurality of tin-plated copper monofilaments with the wire diameters of 0.01mm to 0.04 mm.

7. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the conductive fiber winding inner shielding layer (7) and the conductive fiber winding outer shielding layer (12) are cylindrical supporting net bodies formed by mutually reverse spiral wrapping and braiding of inner and outer double-layer aramid fiber twisting wires, a plurality of conductive fiber bundles are uniformly distributed on the supporting net bodies in the circumferential direction, and the conductive fiber bundles are formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

8. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the ETFE wrapping antifriction layer (10) is an ETFE resin multilayer lapping and wrapping structure, and the thickness of the ETFE resin multilayer lapping and wrapping structure is not more than 0.1mm.

9. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the iron powder polyethylene resin composite inner wrapping layer (6) and the iron powder polyethylene resin composite outer wrapping layer (11) are of an iron powder resin composite belt unidirectional spiral lapping and wrapping structure.

10. The attenuation-suppressed, reinforced, lightweight multi-core control cable of claim 1, wherein: the foaming PFA outer insulating layer (5) is a foaming PFA resin layer with a foaming rate of 40-60%.