CN216623815U

CN216623815U - Intrinsic safety type signal control cable with reinforced shielding layer

Info

Publication number: CN216623815U
Application number: CN202123128806.3U
Authority: CN
Inventors: 金寿芬; 李�杰
Original assignee: ANHUI ZHONGHE ELECTRONICS CO LTD
Current assignee: ANHUI ZHONGHE ELECTRONICS CO LTD
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-27
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses an intrinsic safety type signal control cable with a reinforced shielding layer, which comprises a plurality of conductor wire cores, an insulating layer wrapping the conductor wire cores and an outer sheath wrapping the plurality of conductor wire cores, wherein the conductor wire cores and the insulating layer are wrapped by an inner conductor shielding layer, the outer surface of the insulating layer comprises an outer conductor shielding layer, the outer conductor shielding layer is sequentially wrapped by a metal shielding layer, an inner protective layer, a metal armor and an outer protective layer from inside to outside, a conductive cloth filling layer is formed between the outer sheath and the outer protective layers, the shielding performance of the intrinsic safety type signal control cable is improved by the arranged inner conductor shielding layer and the outer conductor shielding layer and the two layers of conductor shielding, the conductive cloth of the outer conductor shielding layer is prevented by the insulating layer arranged between the inner conductor shielding layer and the outer conductor shielding layer, meanwhile, the conductive cloth replaces an electroplating filling rope, and is polyester fiber cloth with a surface metal coating, the shielding of the internal cable is improved.

Description

Intrinsic safety type signal control cable with reinforced shielding layer

Technical Field

The utility model relates to the field of intrinsic safety type cables, in particular to an intrinsic safety type signal control cable with a reinforced shielding layer.

Background

The intrinsically safe cable is an explosion-proof cable which limits the working current of equipment to a certain extent and cannot cause sparks to cause explosion.

The outer lane parcel of current ann's type signal control cable has the one deck conductor shielding layer at the cable, but when local conductor shielding material received external extrusion effort for in partial conductor shielding has crowded conductor gap, and then cause the conductor shielding embedded. Meanwhile, the insulation material embedded in the cable can enter the conductor shielding layer under extrusion pressure to form a protrusion, the conductor shielding layer can be disconnected seriously, the conductor is in direct contact with the insulation material, the local electric field intensity is concentrated, the voltage-resistant level of cable insulation is reduced, the service life of the cable is influenced, external signals are interfered with the cable signals through the disconnection, meanwhile, the traditional cable is filled through a filling rope, the filling rope does not have a shielding function, and the shielding performance of the cable can not be improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the intrinsic safety type signal control cable with the reinforced shielding layer, the two layers of conductor shields improve the shielding performance of the intrinsic safety type signal control cable, the insulation layer arranged between the inner conductor shielding layer and the outer conductor shielding layer is used for avoiding the conductor shield of the outer conductor shielding layer from being embedded, and meanwhile, the conductive cloth replaces a filling rope, is the polyester fiber cloth with the surface plated with a metal coating, and improves the shielding of the internal cable.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an intrinsic safe type signal control cable that possesses enhancement shielding layer, is including stranded conductor sinle silk, with the insulating layer of conductor sinle silk parcel, the oversheath with stranded conductor sinle silk parcel, wrap up through inner conductor shielding layer between conductor sinle silk and the insulating layer, the insulating layer surface is including outer conductor shielding layer, outer conductor shielding layer has metal shielding layer, interior sheath, metal armor, outer jacket by interior outer parcel in proper order, be formed with electrically conductive cloth filling layer between oversheath and a plurality of outer jacket.

As a preferred technical scheme of the utility model, the outer sheath, the inner sheath and the outer sheath are all made of PVC materials, and shielding coatings are respectively coated on the inner side and the outer side.

As a preferable technical solution of the present invention, the metal armor includes a steel wire armor.

As a preferable technical scheme of the utility model, the conductive cloth filling layer is internally filled with polyester fiber cloth with a surface plated with a metal coating.

As a preferable technical solution of the present invention, the metal shielding layer includes a copper foil that is grounded.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. through the inner conductor shielding layer, the outer conductor shielding layer that set up, two-layer conductor shielding improves this ampere of type signal control cable's shielding performance to through the insulating layer that sets up between inner conductor shielding layer and the outer conductor shielding layer, avoid the conductor shielding on outer conductor shielding layer embedded, replace the filling rope through electrically conductive cloth simultaneously, electrically conductive cloth is the polyester fiber cloth of surface electroplate metal coating, improves the shielding to internal cable.

2. The shielding coating is smeared on the inner side and the outer side of the outer sheath, the inner protection layer and the outer protection layer, so that the shielding performance of the outer sheath, the inner protection layer and the outer protection layer on the conductor cable is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partial structural schematic diagram of the present invention.

Wherein: 1. a conductor core; 2. an inner conductor shield layer; 3. an insulating layer; 4. an outer conductor shield layer; 5. a metal shielding layer; 6. an inner protective layer; 7. metal armor; 8. an outer jacket; 9. a conductive cloth filling layer; 10. an outer sheath.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-2, the present invention provides an intrinsically safe signal control cable with a reinforced shielding layer, which includes a plurality of conductor wire cores 1, an insulating layer 3 wrapping the conductor wire cores 1, and an outer sheath 10 wrapping the plurality of conductor wire cores 1, wherein the conductor wire cores 1 and the insulating layer 3 are wrapped by an inner conductor shielding layer 2, the outer surface of the insulating layer 3 includes an outer conductor shielding layer 4, the outer conductor shielding layer 4 is sequentially wrapped by a metal shielding layer 5, an inner protective layer 6, a metal armor 7 and an outer protective layer 8 from inside to outside, and a conductive cloth filling layer 9 is formed between the outer sheath 10 and the plurality of outer protective layers 8. The shielding effect of the conductor wire core 1 is improved by the inner conductor shielding layer 2 and the outer conductor shielding layer 4, and simultaneously, the insulating layer 3 arranged between the inner conductor shielding layer 2 and the outer conductor shielding layer 4 avoids the conductor shielding of the outer conductor shielding layer 4 from being embedded, improves the voltage-resistant level of the insulation of the conductor wire core 1, prolongs the service life (as shown in figure 2), meanwhile, the conductive cloth is filled in the conductive cloth filling layer 9, the conductive cloth is formed by firstly chemically depositing or physically transferring metallic nickel to the polyester fiber, the copper layer with high conductivity is plated on the nickel, the nickel metal which is prevented from being corroded by an oxidation machine is plated on the copper layer, the combination of the copper and the nickel provides excellent conductivity and good electromagnetic shielding effect, and the shielding range is 100K-3GHz (the specific electroplating process is well known to those skilled in the art, and is not described in detail in the scheme).

Preferably, the outer sheath 10, the inner sheath 6 and the outer sheath 8 are made of PVC, and shielding paint is coated on the inner side and the outer side. The shielding coating smeared on the inner side and the outer side of the outer sheath 10, the inner protection layer 6 and the outer protection layer 8 improves the shielding performance of the outer sheath 10, the inner protection layer 6 and the outer protection layer 8 on the conductor cable 1.

Preferably, the metal armouring 7 comprises a steel wire armouring. The mechanical strength of the cable is increased, and the anti-corrosion capability is improved.

Preferably, the conductive cloth filling layer 9 is filled with polyester fiber cloth with a metal plating layer plated on the surface. The conductive cloth is high in conductivity and corrosion resistance, and has a good electromagnetic wave shielding effect.

Preferably, the metal shielding layer 5 comprises a copper foil which is grounded. The metal shielding layer 5 is made of nonmagnetic metal material, and preferably, copper foil has good shielding performance and corrosion resistance.

According to the utility model, the insulating layer 3 arranged between the inner conductor shielding layer 2 and the outer conductor shielding layer 4 is used for avoiding the conductor shielding of the outer conductor shielding layer 4 from being embedded, so that the insulation voltage-resistant level of the conductor wire core 1 is improved, the service life is prolonged, and meanwhile, the polyester fiber cloth filled with the surface electroplated metal coating inside the conductive cloth filling layer 9 is used for replacing the traditional filling rope, so that the shielding performance of the cable is improved.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an intrinsic safe type signal control cable who possesses enhancement shielding layer, including stranded conductor sinle silk (1), with insulating layer (3) of conductor sinle silk (1) parcel, with oversheath (10) of stranded conductor sinle silk (1) parcel, its characterized in that: wrap up through inner conductor shielding layer (2) between conductor sinle silk (1) and insulating layer (3), insulating layer (3) surface is including outer conductor shielding layer (4), outer conductor shielding layer (4) have by interior outer parcel in proper order metal shielding layer (5), interior sheath (6), metal armor (7), outer jacket (8), be formed with electrically conductive cloth filling layer (9) between oversheath (10) and a plurality of outer jacket (8).

2. The intrinsically safe signal control cable with a reinforcing shield of claim 1, wherein: the outer sheath (10), the inner protection layer (6) and the outer protection layer (8) are all made of PVC materials, and shielding coatings are coated on the inner side and the outer side.

3. The intrinsically safe signal control cable with a reinforcing shield of claim 1, wherein: the metal armor (7) comprises a steel wire armor.

4. The intrinsically safe signal control cable with a reinforcing shield of claim 1, wherein: the conductive cloth filling layer (9) is filled with polyester fiber cloth with a surface plated with metal.

5. The intrinsically safe signal control cable with a reinforcing shield of claim 1, wherein: the metal shielding layer (5) comprises a copper foil which is grounded.