CN213660034U - Anti-magnetic interference cable - Google Patents

Abstract

The utility model provides an antimagnetic interference cable, which comprises an inner lining frame, a wire core, a shielding plugboard and an inner semi-conductive shielding layer, wherein the cross section of the inner lining frame is a regular polygon, an arc groove is arranged on the side surface of the inner lining frame, and slots are arranged at the corners of the inner lining frame; the wire cores are arranged in the arc grooves, and the inner semi-conductive shielding layers are wrapped outside the wire cores; one end of the shielding plugboard is inserted in the slot, and the other end of the shielding plugboard props against the inner side of the inner semi-conductive shielding layer; the cable core sequentially comprises a conductor, a foaming layer and an inorganic composite insulating layer from inside to outside, and a flame-retardant filling layer is arranged between the cable core and the inner semi-conductive shielding layer; the outer package of wrapping is equipped with insulating protective layer, outer semiconductive shield layer, wraps the covering, separates thermal protection layer, metallic braid and outer inoxidizing coating in proper order outside the interior semiconductive shield layer. In this application, utilize the shielding picture peg further to keep apart each sinle silk, the effectual interference of blocking most magnetic fields of cooperation inside and outside semi-conductive shielding layer has guaranteed the efficiency that whole cable passed through the signal.

Description

Anti-magnetic interference cable

Technical Field

The utility model relates to a wire and cable technical field especially relates to an antimagnetic interference cable.

Background

Wire and cable are wire products for transmitting electric energy, electric signals and realizing electromagnetic energy conversion. A cable generally comprises a core for transmitting power or electrical signals and a sheath for protecting and insulating. Cables having only one core and having a small diameter are generally called wires. There are also some electric wires without an insulating sheath, which are called bare wires. The cable core in the cable is made of metal materials with good electric conductivity, and usually copper (good electric conductivity) or aluminum (low cost) is used.

Cables are widely used in various industries as important carriers for signal transmission, however, in some extreme environments, signals are easily interfered during the signal transmission process of the cables, which causes leakage and even distortion, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent magnetic interference cable can prevent effectively that the signal from revealing or by external disturbance in transmission process.

In order to achieve the purpose, the utility model provides an antimagnetic interference cable, which comprises an inner lining frame, a wire core, a shielding plugboard and an inner semi-conductive shielding layer, wherein the cross section of the inner lining frame is a regular polygon, an arc groove is arranged on the side surface of the inner lining frame, and a slot is arranged at the edge of the inner lining frame; the wire cores are arranged in the arc grooves, and the inner semi-conductive shielding layer wraps the wire cores; one end of the shielding plugboard is inserted and clamped in the slot, and the other end of the shielding plugboard abuts against the inner side of the inner semi-conductive shielding layer; the cable core sequentially comprises a conductor, a foaming layer and an inorganic composite insulating layer from inside to outside, and a flame-retardant filling layer is arranged between the cable core and the inner semi-conductive shielding layer; the outer package of wrapping is equipped with insulating protective layer, outer semiconductive shield layer, wraps the covering, separates thermal protection layer, metallic braid and outer inoxidizing coating in proper order outside the interior semiconductive shield layer.

Further, in the antimagnetic interference cable, the tip of shielding picture peg is equipped with the constant head tank, interior semiconduction shielding layer inboard is equipped with the location and detains, the constant head tank with location knot cooperation joint.

Further, in the anti-magnetic interference cable, the foaming layer is made of polystyrene.

Further, in the anti-magnetic interference cable, the inorganic composite insulating layer is composed of synthetic fluorophlogopite tapes and high flame retardant glass fiber tapes.

Furthermore, in the antimagnetic interference cable, the flame-retardant filling layer is made of a low-smoke halogen-free oxygen-insulating material and is formed by extrusion.

Further, in the antimagnetic interference cable, the inner semi-conductive shielding layer is made of a 10 kV-level cross-linkable semi-conductive shielding layer material, and the outer semi-conductive shielding layer is made of a 10 kV-level peelable semi-conductive shielding layer material.

Further, in the anti-magnetic interference cable, the wrapping layer is made of glass fiber tape.

Further, in the anti-magnetic interference cable, the heat insulation protective layer is made of flexible ceramic silicon rubber.

Further, in the anti-magnetic interference cable, the metal braid is made of medium or low carbon steel or low alloy steel.

Furthermore, in the anti-magnetic interference cable, the thickness of the outer protective layer is 1mm-1.8mm, and the material is PVC.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the inner lining frame is used for uniformly separating the wire cores to avoid contact, prevent the cable from bending and enable the wire cores to deviate or touch, the shielding plugboard is used for further isolating the wire cores, the inner semi-conductive shielding layer and the outer semi-conductive shielding layer are matched to effectively block the interference of most of magnetic fields, and the signal passing efficiency of the whole cable is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the middle antimagnetic interference cable of the present invention.

Wherein: the insulation board comprises an inner lining frame 1, a wire core 2, a conductor 21, a foaming layer 22, an inorganic composite insulating layer 23, a flame-retardant filling layer 3, a shielding inserting plate 4, a positioning groove 41, an inner semi-conductive shielding layer 51, a positioning buckle 52, an insulation protective layer 53, an outer semi-conductive shielding layer 54, a wrapping layer 6, a heat insulation protective layer 7, a metal braid layer 8 and an outer protective layer 9.

Detailed Description

The antimagnetic interference cable of the present invention will be described in more detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that a person skilled in the art may modify the invention described herein while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, the utility model provides an anti-magnetic interference cable, which comprises an inner liner frame 1, a wire core 2, a shielding plugboard 4 and an inner semi-conductive shielding layer 51, wherein the cross section of the inner liner frame 1 is a regular polygon, an arc groove is arranged on the side surface of the inner liner frame 1, and a slot is arranged at the edge of the inner liner frame 1; the wire cores 2 are arranged in the arc grooves, and the inner semi-conductive shielding layers 51 are wrapped outside the wire cores 2; one end of the shielding plugboard 4 is inserted in the slot, and the other end of the shielding plugboard is propped against the inner side of the inner semi-conductive shielding layer 51; the wire core 2 comprises a conductor 21, a foaming layer 22 and an inorganic composite insulating layer 23 from inside to outside in sequence, and a flame-retardant filling layer 3 is arranged between the wire core 2 and the inner semi-conductive shielding layer 51; the inner semi-conductive shielding layer 51 is sequentially wrapped with an outer semi-conductive shielding layer 5, a wrapping layer 6, a heat insulation protective layer 7, a metal braid layer 8 and an outer protective layer 9. The shield insert plate 4 is made of a mixed structure of a copper base layer and an aluminum tape.

Specifically, the end of the shielding board 4 is provided with a positioning groove 41, the inner side of the inner semi-conductive shielding layer 51 is provided with a positioning buckle 52, and the positioning groove 41 is in fit clamping connection with the positioning buckle 52.

The conductor 21 adopts a compact round structure, and the sectional area is 50mm²The structure of the conductor 21 is 7/3.0mm, and the outer diameter of the compacted conductor 21 is 8.3 mm. The foamed layer 22 is made of polystyrene and has excellent heat insulation, insulation and transparency. The inorganic composite insulating layer 23 is prepared by synthesizing the gold fluoride cloudThe master tape is composed of a high flame-retardant glass fiber tape, the width of the synthetic fluorophlogopite tape is 25mm, the thickness of the synthetic fluorophlogopite tape is 0.20mm, the lapping rate is 55%, and four layers of lapping are carried out; the width of the glass fiber tape is 25mm, the thickness is 0.20mm, the lapping and covering rate is 30%, and the glass fiber tape is lapped by one layer. Meanwhile, the flame-retardant filling layer 3 is made of a low-smoke halogen-free oxygen-insulating material, is mainly filled in a round shape, and is formed by extrusion, so that the compression resistance is improved, and the flame retardance is improved.

Meanwhile, the inner semi-conductive shielding layer 51 is made of a 10 kV-level cross-linkable semi-conductive shielding layer material, the thickness of the inner semi-conductive shielding layer is 0.7mm, and the inner semi-conductive shielding layer is extruded outside the cable core by a three-layer co-extrusion process. The outer semiconductive shielding layer 54 is made of 10 kV-level strippable semiconductive shielding layer material, the thickness of the outer semiconductive shielding layer is 0.7mm, and the outer semiconductive shielding layer is extruded outside the insulation protection layer 53 by a three-layer co-extrusion process. The insulating protective layer 53 is made of any one of LCP, PI, and PTFE, and has properties of improving high temperature resistance, corrosion resistance, wear resistance, pressure resistance, and the like.

Further, in this embodiment, the material of wrapping 6 is the glass fiber tape, and the glass fiber tape has not only good thermal-insulated, thermal insulation performance, but also has dampproofing function. The material of thermal-insulated inoxidizing coating 7 is flexible ceramic silicon rubber, makes thermal-insulated inoxidizing coating 7 can effectively improve the anti extrusion fire resistance of cable, and when the high temperature, thermal-insulated inoxidizing coating 76 changes to the pottery, forms the protective housing outside the cable conductor, prevents that the intensity of a fire from getting into the cable conductor. The metal braid 8 is made of medium and low carbon steel or low alloy steel and is used for increasing the pressure resistance, and compared with a non-metal material, the steel has better strength and good toughness, so that the cable is not easy to break. Of course, both medium and low carbon steel and low alloy steel need to be subjected to necessary anticorrosion treatment, such as galvanization, blackening and the like. The outer protective layer 9 is made of PVC material, and the extrusion thickness is 1mm-1.8mm, preferably 2.2 mm. And a tube extruding process is adopted, and the metal braided layer 8 is uniformly extruded and wrapped.

In conclusion, in this embodiment, the anti-magnetic interference cable provided equally divides each wire core through the lining frame, avoids contacting, prevents the cable from bending and makes the wire core shift or touch, and further isolates each wire core by using the shielding plugboard, and the interference of most of magnetic field is effectively blocked by matching with the inner and outer semi-conductive shielding layers, thereby ensuring the efficiency of the whole cable for passing signals.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims (10)

1. The anti-magnetic interference cable is characterized by comprising an inner lining frame, a wire core, a shielding plugboard and an inner semi-conductive shielding layer, wherein the cross section of the inner lining frame is in a regular polygon shape, an arc groove is formed in the side surface of the inner lining frame, and a slot is formed in the corner of the inner lining frame; the wire cores are arranged in the arc grooves, and the inner semi-conductive shielding layer wraps the wire cores; one end of the shielding plugboard is inserted and clamped in the slot, and the other end of the shielding plugboard abuts against the inner side of the inner semi-conductive shielding layer; the cable core sequentially comprises a conductor, a foaming layer and an inorganic composite insulating layer from inside to outside, and a flame-retardant filling layer is arranged between the cable core and the inner semi-conductive shielding layer; the outer package of wrapping is equipped with insulating protective layer, outer semiconductive shield layer, wraps the covering, separates thermal protection layer, metallic braid and outer inoxidizing coating in proper order outside the interior semiconductive shield layer.

2. The anti-magnetic interference cable according to claim 1, wherein a positioning groove is formed in an end portion of the shielding insertion plate, a positioning buckle is arranged on an inner side of the inner semi-conductive shielding layer, and the positioning groove is in fit clamping connection with the positioning buckle.

3. The magnetic interference prevention cable of claim 1 wherein the foamed layer is made of polystyrene.

4. The anti-magnetic interference cable according to claim 1, wherein the inorganic composite insulating layer is composed of synthetic fluorophlogopite tapes and high flame retardant glass fiber tapes.

5. The anti-magnetic interference cable according to claim 1, wherein the flame-retardant filling layer is made of a low-smoke halogen-free oxygen-insulating material and is formed by extrusion.

6. The magnetic interference prevention cable of claim 1 wherein the inner semi-conductive shielding layer is made of a 10kV cross-linkable semi-conductive shielding layer material, and the outer semi-conductive shielding layer is made of a 10kV peelable semi-conductive shielding layer material.

7. The anti-magnetic interference cable according to claim 1, wherein the material of the wrapping layer is a glass fiber tape.

8. The magnetic interference prevention cable of claim 1 wherein the heat insulation and protection layer is made of flexible ceramic silicone rubber.

9. The anti-magnetic interference cable according to claim 1, wherein the metal braid is made of medium or low carbon steel or low alloy steel.

10. The magnetic interference prevention cable of claim 1 wherein the outer protective layer has a thickness of 1mm to 1.8mm and is made of PVC.

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