CN212934235U

CN212934235U - Flame-retardant cable with high shielding performance

Info

Publication number: CN212934235U
Application number: CN202022209867.1U
Authority: CN
Inventors: 张涛; 张作兵; 段斌
Original assignee: Changsha Hanhe Cable Co ltd
Current assignee: Changsha Hanhe Cable Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-04-09
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a flame retarded cable that shielding performance is high relates to cable manufacturing technical field. The flame-retardant cable with high shielding performance comprises an outer cable layer and an inner cable core, wherein the outer cable layer wraps the inner cable core, a support frame is arranged in the outer cable layer, and the support frame comprises a support center hole and a support circumferential hole circumferentially arranged around the support center hole; the cable inner core comprises a main cable and an auxiliary cable, the main cable penetrates through the center hole of the support to be fixed with the support frame, and the auxiliary cable is arranged in the circumferential hole of the support. The utility model discloses, through setting up first shielding layer and second shielding layer, adopt the combination shielding pattern of two kinds of materials, shielding property that can effectual improvement cable prevents that it from receiving external signal's interference, has improved job stabilization nature greatly.

Description

Flame-retardant cable with high shielding performance

Technical Field

The utility model relates to a cable manufacturing technical field, concretely relates to flame retarded cable that shielding performance is high.

Background

The cable is mainly applied to a control loop between electrical equipment, is used as a connecting line between various electrical instruments and automation devices, and plays a role in transmitting various electric energy or control signals, so that the whole electrical system can be safely and reliably operated.

At present, some cables are poor in shielding performance and easy to be interfered by external signals, so that signals transmitted by the cables are distorted, and great loss is brought to enterprises. How to solve the technical problems is a technical problem to be solved in the technical field of cable manufacturing at present.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the embodiment of the utility model provides a flame retarded cable that shielding performance is high to solve the problem that proposes in the above-mentioned background art.

The utility model provides a following technical scheme: a flame-retardant cable with high shielding performance comprises a cable outer layer and a cable inner core, wherein the cable outer layer wraps the cable inner core, a support frame is arranged in the cable outer layer, and the support frame comprises a support center hole and a support circumferential hole circumferentially arranged around the support center hole; the cable inner core comprises a main cable and an auxiliary cable, the main cable penetrates through a central hole of the support to be fixed with the support frame, and the auxiliary cable is arranged in a circumferential hole of the support;

the auxiliary cable comprises a conductor, and a fiber braided layer, a first shielding layer and a second shielding layer which are sequentially coated on the outer side of the conductor; the main cable and the auxiliary cable have the same structure; the outer layer of the cable sequentially comprises a mica tape layer, a steel wire armor layer, an insulating layer and an outer sheath layer, wherein the mica tape layer, the steel wire armor layer, the insulating layer and the outer sheath layer are coated on the outer side of the inner core of the cable; and a magnesium oxide layer is filled between the outer layer of the cable and the inner core of the cable.

Preferably, a plurality of carbon fiber composite core rods are arranged in the steel wire armor layer.

Preferably, the steel wire armor layer is formed by weaving stainless steel wires and is of a square grid structure.

Preferably, the first shielding layer is formed by weaving tinned copper wires, and the second shielding layer is formed by longitudinally wrapping an aluminum-plastic composite belt.

Preferably, the insulating layer is made of ethylene propylene rubber insulating material.

Preferably, the outer sheath layer is made of silane type low-smoke halogen-free flame-retardant polyolefin.

Preferably, the fiber woven layer is formed by weaving glass fibers or carbon fibers.

Preferably, the support frame is made of heat insulation tiles.

The embodiment of the utility model provides a pair of flame retarded cable that shielding performance is high has following beneficial effect: the utility model discloses, through setting up first shielding layer and second shielding layer, adopt the combination shielding type of two kinds of materials, can effectual improvement cable shielding property, prevent it from receiving the interference of external signal, improved job stabilization nature greatly; through set up various refractory material in the cable, improved the utility model discloses the fire-resistant stability of cable.

Drawings

Fig. 1 is a schematic structural view of a flame-retardant cable with high shielding performance according to the present invention;

fig. 2 is a structural intention of the auxiliary cable in the present invention;

fig. 3 is the structural intention of the middle supporting frame of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a flame retardant cable with high shielding performance according to the present invention; fig. 2 is a structural intention of the auxiliary cable in the present invention; fig. 3 is the structural intention of the middle supporting frame of the present invention.

A flame-retardant cable with high shielding performance comprises an outer cable layer 100 and an inner cable core, wherein the outer cable layer 100 wraps the inner cable core, a support frame 300 is arranged in the outer cable layer 100, and the support frame 300 comprises a support center hole 310 and a support circumferential hole 320 circumferentially arranged around the support center hole 310; the cable inner core comprises a main cable 400 and an auxiliary cable 200, the main cable 400 penetrates through the central hole 310 of the support to be fixed with the support frame 300, and the auxiliary cable 200 is arranged in the circumferential hole 320 of the support;

the auxiliary cable 200 comprises a conductor 210, a fiber braid 220, a first shielding layer (230) and a second shielding layer (240) which are sequentially coated outside the conductor 210; the main cable 400 and the auxiliary cable 200 have the same structure; the cable outer layer 100 comprises a mica tape layer 110, a steel wire armor layer 120, an insulating layer 130 and an outer sheath layer 140 which are coated outside the cable inner core in sequence; and a magnesium oxide layer 500 is filled between the outer layer 100 of the cable and the inner core of the cable.

The main cable 400 and the auxiliary cable 200 are identical in structure, the main cable 400 comprises a conductor, and a fiber braided layer, a first shielding layer and a second shielding layer sequentially wrapping the outer side of the conductor.

The middle of the support frame 300 is a support center hole 310, the support center hole 310 is circumferentially divided into a plurality of support circumferential holes 320 by partition plates 330, and the outer circumferential edges of the support circumferential holes 320 are enclosed into a closed hole structure by annular partition plates.

It should be noted that, in this embodiment, it is preferable that the number of the stent circumferential holes 320 is 6, and the 6 stent circumferential holes are respectively circumferentially arranged around the stent central hole 310.

The supporting frame 300 is made of heat insulation tiles, the basic material of the heat insulation tiles is sand which is made into very thin fibers, the volume of the heat insulation tiles is 90% of air, and the heat insulation tiles have good heat insulation, heat preservation and fire resistance effects due to the fact that the air has the lowest heat conductivity coefficient; the main cable 400 and the auxiliary cable 200 are separated by the support frame 300, so that the phenomenon that heat is transferred between the cables due to overhigh temperature of any one of the cables can be avoided; and simultaneously, the utility model discloses the inside support frame 300 that sets up of cable also can improve the structural strength of cable.

It should be noted that, the first shielding layer and the second shielding layer are arranged on the auxiliary cable 200 and the main cable 400, and a combined shielding type of two materials is adopted, so that the shielding performance of the cable can be effectively improved, the cable is prevented from being interfered by external signals, and the working stability is greatly improved.

Fill magnesium oxide layer 500 between outer 100 of cable and the cable inner core, magnesium oxide layer 500 has good insulating properties, high temperature resistance and fire behavior, further improves the utility model discloses the high temperature resistance and the fire behavior of cable.

The mica tape 110 is a fire-resistant insulating material, and has high temperature resistance and combustion resistance.

Preferably, the fiber woven layer 220 is formed by weaving glass fibers or carbon fibers, and not only has a certain flame retardant function, but also has a certain protection and support effect.

Preferably, the steel wire armor layer 120 is formed by weaving a plurality of strands of stainless steel wires, so that the service life of the cable is longer than that of a common cable, higher current can be transmitted, larger overload can be borne, and the insulation performance cannot be reduced due to moisture absorption of materials even if the cable is used for a longer time and does not run in a power-on mode.

Preferably, a plurality of carbon fiber composite mandrels 121 are arranged in the steel wire armor layer 120, and by arranging the carbon fiber composite mandrels 121, the strength of the cable can be effectively improved, the anti-tensile effect of the cable is increased, and the situation of breakage is avoided.

Preferably, the insulating layer 130 is an ethylene propylene rubber insulating material, and since ethylene propylene rubber has excellent characteristics of weather resistance, ozone resistance, heat resistance, acid and alkali resistance, steam resistance and the like, the stability of the cable is improved, the surface friction coefficient of the insulating layer 130 is large, and the insulating layer cannot generate relative displacement when the cable is continuously bent, so that the normal output of electrical performance is ensured.

Preferably, the outer sheath layer 140 is made of silane type low-smoke halogen-free flame retardant polyolefin, which has the characteristics of insulation, high temperature resistance, no delayed combustion and no generation of hydrogen halide gas, and most importantly, no toxic gas is generated during combustion, and no secondary damage is caused to a human body.

Preferably, the conductor 210 is any one of a single copper wire, a stranded bare copper wire or a stranded tinned copper wire, so that the working efficiency of the cable is greatly improved, and the cable is more stable to work.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounting," "setting," "connecting," "fixing," "screwing" and the like are to be construed broadly, for example, as being either fixedly connected or detachably connected or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept, and all such alterations and modifications shall fall within the scope of the appended claims.

Claims

1. A flame-retardant cable with high shielding performance comprises an outer cable layer (100) and an inner cable core, wherein the outer cable layer (100) wraps the inner cable core, and is characterized in that a support frame (300) is arranged in the outer cable layer (100), and the support frame (300) comprises a support center hole (310) and a support circumferential hole (320) circumferentially arranged around the support center hole (310); the cable inner core comprises a main cable (400) and an auxiliary cable (200), the main cable (400) penetrates through a central hole (310) of the support to be fixed with the support frame (300), and the auxiliary cable (200) is arranged in a circumferential hole (320) of the support;

the auxiliary cable (200) comprises a conductor (210), and a fiber braided layer (220), a first shielding layer (230) and a second shielding layer (240) which are sequentially coated on the outer side of the conductor (210); the main cable (400) and the auxiliary cable (200) have the same structure; the cable outer layer (100) sequentially comprises a mica tape layer (110), a steel wire armor layer (120), an insulating layer (130) and an outer sheath layer (140), wherein the mica tape layer is coated on the outer side of the cable inner core; and a magnesium oxide layer (500) is filled between the cable outer layer (100) and the cable inner core.

2. The flame-retardant cable with high shielding performance as claimed in claim 1, wherein a plurality of carbon fiber composite core rods (121) are arranged in the steel wire armor layer (120).

3. The flame-retardant cable with high shielding performance as claimed in claim 1, wherein the steel wire armor layer (120) is formed by weaving stainless steel wires and has a square grid structure.

4. The flame-retardant cable with high shielding performance as claimed in claim 1, wherein the first shielding layer (230) is formed by weaving tinned copper wires, and the second shielding layer (240) is formed by longitudinally wrapping an aluminum-plastic composite tape.

5. The flame-retardant cable with high shielding performance as claimed in claim 1, wherein the insulating layer (130) is an ethylene propylene rubber insulating material.

6. The flame-retardant cable with high shielding performance according to claim 1, wherein the outer sheath layer (140) is made of silane type low-smoke halogen-free flame-retardant polyolefin.

7. The flame-retardant cable with high shielding performance as claimed in claim 1, wherein the fiber braid (220) is woven by glass fiber or carbon fiber.

8. The flame-retardant cable with high shielding performance as claimed in claim 1, wherein the material of the support frame (300) is a heat insulation tile.